CAT Bucyrus Shaft Jumbo Single Boom Hydraulic Jumbo Operator Manual SN S09-6175, S09-6180

BI615822

© Bucyrus All Rights Reserved

BUCYRUS R

Technical Manual

BI615822

Shaft Jumbo Single Boom Hydraulic Jumbo

Operator Manual

Serial #: S09-6175, S09-6180

BI615822

Parts Ordering & Product Support

Use only genuine Terex / Reedrill parts in the maintenance, rebuild, or repair, of Terex / Reedrill machines.

Terex / Reedrill shall have no liability as to any unauthorized modification of machines or parts and shall have no obligation or liability as to any machines or parts which have been improperly handled, or which have not been operated, maintained, or repaired according to Terex / Reedrill's furnished manuals, or other written instructions, or which are operated with other than genuine Terex / Reedrill parts.

Your cooperation in furnishing as much information as possible will assist us in filling your orders correctly and in the shortest possible time.

1.

IDENTIFICATION OF THE MACHINE Always furnish the Terex / Reedrill Model Number and Serial Number when ordering parts. This information is found on the machine nameplate.

2.

PART NUMBER AND DESCRIPTION In addition to the Serial Number, always give the part number and description of each part ordered. If there is any doubt as to the correct part number and description, furnish a dimensioned sketch or return the part to be replaced, transportation charges prepaid.

3.

SHIPMENT Unless otherwise instructed, all shipments will be made via motor freight collect or UPS prepaid and charged on our invoice. Shipments cannot be made on open account until your credit has been approved by our accounting department.

MAILING ADDRESS Terex Reedrill P. O. Box 998 Sherman, TX. 75091-0998

SHIPPING ADDRESS Terex Reedrill 3501 S. FM Hwy 1417 Denison, TX. 75020

FOR PARTS ORDER ENTRY within U.S.A. Telephone 1-800-854-9030 within U.S.A. Telefax 1-800-582-6570 Telephone (903) 786-2981 Telefax (903) 786-6407

FOR PRODUCT SERVICE & WARRANTY within U.S.A. Telephone 1-800-258-0009 Telephone (903) 786-2981 Telefax (903) 786-6408

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Introduction

WARNING: BEFORE operating this machine or performing any service / maintenance on it, you are advised to throughly read this manual.

BE SURE you understand all the warnings and cautions listed in the Safety Section.

WARNING: If the Jumbo is shipped to a new destination by people not familiar with the Jumbo, always include either a complete instruction book or a copy of the following topics from Section 2: Pre-Operation Checklist AC Electric Power Operation Shutdown Procedure

NOTE:

Introduction

Concerning Schematics: The Hydraulic, Pneumatic and Electrical Schematics depicted in this manual are general in nature. They are intended for use in understanding how the basic systems operate. Refer to the Parts List for the specific machine for a detailed listing of the schematics.

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Shaft Jumbo

Fig. 1-1 Shaft Jumbo - From Top

Fig. 1-2 Shaft Jumbo - From Bottom

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Introduction

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Shaft Jumbo The Terex Reedrill Jumbo is an extremely rugged shaft sinking unit.

The single boom, fully hydraulic Jumbo includes an electrically powered hydraulic drilling system, water booster system and drill lube system.

A simple hydraulic system makes the unit suitable for extremely tough shaft sinking conditions and provides low power consumption. This unit is equipped with Terex Reedrill hydraulic rock drill model HPRH4519, specially modified MD105 Hydraulic Boom and Timberock Feed.

The electrically driven main hydraulic drilling systems are equipped with a variable volume piston pump. The unit also features parallel drilling system, and constant sting system.

This manual provides operating instructions, a technical description of the Shaft Jumbo, servicing and routine maintenance procedures, and an explanation of the different Shaft Jumbo systems.

Fig. 1-3 Shaft Jumbo Boom and Feed

Introduction

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Notes

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Introduction

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Table of Contents SECTION 1

SAFETY AND OPERATION WARNINGS

Overview of Potential Hazards ................................................................................................ 1-2 Safety Instructions .................................................................................................................. 1-3 Before Operation.................................................................................................................. 1-3 Operation ............................................................................................................................. 1-3 After Operation ..................................................................................................................... 1-3 Maintenance ........................................................................................................................ 1-4 Equipment Transfer .............................................................................................................. 1-4

SECTION 2

OPERATING INSTRUCTIONS

Pre-Operation Checklist ......................................................................................................... 2-2 Setting Up for Drilling ............................................................................................................. 2-3 AC Electric Power Operation ............................................................................................... 2-3 Applying AC Power for Drilling .............................................................................................. 2-3 Water System Check ............................................................................................................ 2-4 Start Main Pumps ................................................................................................................. 2-4 Shutdown Procedures ............................................................................................................ 2-5 Emergency Electrical Shutdown ........................................................................................... 2-5 Normal Electrical Shutdown .................................................................................................. 2-6 Automatic Machine Shutdown Functions ............................................................................... 2-6 Drilling Procedures ................................................................................................................ 2-8 Set-up For Drilling ................................................................................................................ 2-8 Manual Hole Collaring .......................................................................................................... 2-9 Changing Bits ...................................................................................................................... 2-9 Checks During Drilling .......................................................................................................... 2-9 Drill Control Functions .......................................................................................................... 2-10 Drill Console / Instrument Panel .......................................................................................... 2-11 Drill Control Valve ................................................................................................................. 2-12 Rotation ............................................................................................................................. 2-12 Feed .................................................................................................................................. 2-12 Drill (Hammer) .................................................................................................................... 2-12 Drill Control Valve Schematic ............................................................................................. 2-13 Feed Paralleling System ...................................................................................................... 2-14 Constant Sting Circuit ........................................................................................................... 2-15

SECTION 3

ADJUSTMENTS AND PREVENTATIVE MAINTENANCE

Initial Machine Setup and Adjustments .................................................................................... 3-2 Boom Auto-Parallelism ......................................................................................................... 3-2 Drill Air / Oil Mist Lubricator .................................................................................................. 3-2 Drill Rotation Speed and Pressure ........................................................................................ 3-3 Drill System Pressure ........................................................................................................... 3-3 Boom Control Valve and Feed Extend Pressure ................................................................... 3-4 Drill Feed Pressure .............................................................................................................. 3-4 Drill Operator's Maintenance Checklist ................................................................................... 3-5 Check Every Shift ................................................................................................................. 3-5

Introduction

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Table of Contents Check Regularly ................................................................................................................... 3-5 Machine Set-Up & Pressure Setting Chart ............................................................................. 3-6 Bolt Torque Specifications ...................................................................................................... 3-7 Hydraulic General Specifications ............................................................................................ 3-8 Rotation ............................................................................................................................... 3-8 Feed Pressure Adjutment ..................................................................................................... 3-8 Hammer Pressure ................................................................................................................ 3-8 Constant Feed Setting ......................................................................................................... 3-8 Feed .................................................................................................................................... 3-8 Hydraulic Diagram - Shaft Jumbo ........................................................................................... 3-9 General Preventative Maintenance ....................................................................................... 3-10 Preventative Maintenance Chart ........................................................................................... 3-11 List of Terex Shaft Jumbo General Fluids and Lubricants with Capacities ........................... 3-11 Daily ................................................................................................................................... 3-11 50 Hours (Weekly) .............................................................................................................. 3-12 250 Hours (Monthly)............................................................................................................ 3-12 500 Hours (3 Months) ......................................................................................................... 3-13 1000 Hours (6 Months) ....................................................................................................... 3-13 2000 Hours (1 Year) ........................................................................................................... 3-14 System Checks .................................................................................................................... 3-15 Prior To Start for New or Reconditioned Machines .............................................................. 3-15 Hydraulic System Checks ..................................................................................................... 3-16 Main Hydraulic Pumps ........................................................................................................ 3-16

SECTION 4

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GLOSSARY

Introduction

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Section 1

Safety

Safety

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Overview of Potential Hazards OVERVIEW OF POTENTIAL HAZARDS The Jumbo is capable of extending their reach vertically and horizontally. Like all moving objects and reach extending devices, there are potential hazards associated with its use. These hazards will be minimized if the machine is properly inspected and maintained. The operators should read this manual and have been trained to use the machine in an appropriate and safe manner. Should any questions arise concerning the maintenance or operation of the machine contact Reedrill at 1-800-258-0009.

In this section and those that follow, the word: DANGER means that severe injury or death will result from failure to follow instruction.

WARNING means that severe injury or death can result from failure to follow instruction.

CAUTION means that minor injury or property damage can result from failure to follow instruction.

NOTE means that special attention should be given to the instruction.

POTENTIAL HAZARD

EFFECT

PREVENTION

Electrical Contact

DANGER: Will cause Serious Injury or Death.

Keep all equipment parts, tools and personnel at least 10 FT. (3 m) away from all electrical power lines.

Contaminated Air

DANGER: WILL cause Serious Injury or Death.

Do Not operate machine in an area without good ventilation.

Moving Boom or Parts

WARNING: Can Cause Serious Injury or Death.

Do Not operate machine or boom until all people are clear of the area.

Do Not lubricate or service while machine is running.

High Pressure Air or Fluid

WARNING: Can Cause Serious Injury or Death.

Relieve pressure on hydraulic and pneumatic systems before loosening hoses or connections.

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Safety

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Safety Instructions Before Operation •

Do study this manual and fully understand the controls.

•

Do be sure all safety guards are securely in place.

•

Do wear safety helmet, glasses and hearing protection when operating or working on machine.

•

Do be sure all personnel are clear of the machine and work area before starting the engine or operating machine.

•

Do be sure drill area is clear of all obstructions before operating machine.

•

Do Not operate machine with: • Hydraulic or air leaks • Broken or damaged electrical wiring or components • Damaged hydraulic hoses or fittings • Worn or damaged parts

Operation •

Do examine the surface of the drill face before drilling to determine the possible presence of unfired explosives.

•

Do provide sufficient ventilation when operating the Jumbo in the shaft. Operations can cause poisonus gasses.

•

Do keep work areas clean and clear of cuttings, hand tools and other objects.

•

Do Not use the machine for any other purpose than what it was designed for. This machine is designed for blasthole drilling operations only.

•

Do Not wear jewelry or loose fitting clothing when working on machinery. Keep clothing and hands clear of moving parts.

•

Do Not drill into or near a "bootleg" hole or any hole that may contain explosives.

After Operation •

Safety

Follow Shut Down Procedures given in Section 2 of this manual.

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Safety Instructions Maintenance •

Do have two persons present when performing service work, both being fully trained on the safety issues. One person shall supervise from the operator's position and have immediate access to an emergency stop in all situations. Visual, audible or verbal communication signals must be established and understood by both persons.

•

Do be sure each person is adequately trained to perform service and maintenance procedures.

•

Do place a warning tag on starting controls to alert personnel that someone is working on the machine and lockout the electrical panel before making repairs or adjustments to machine.

•

Do have adequate lighting when performing service.

•

Do relieve pressure on hydraulic or pneumatic systems before loosening connections or parts.

•

Do be sure machine and components are well supported before servicing or replacing parts.

•

Do Not service or perform maintenance while machine is running.

•

Do Not hammer on coupling, bit or drill steel. Use only proper tools to make repair or adjustments.

•

Do Not weld or grind near oil lines.

•

Do Not leave tools or other loose objects on the unit. They could fall, injuring personnel below.

Equipment Transfer If all or part of the equipment is shipped to a new destination, always include a complete instruction manual or a copy of the following topics: • Safety Section • Operation Instructions including: • Pre-Operation Checklist • AC Electrical Power Operation • Shutdown Procedure

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Safety

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Section 2

Operating Instructions

WARNING: If the Jumbo is shipped to a new destination by people not familiar with the Jumbo, always include either a complete instruction book or copy of the following topics from Section 2: Pre-Operation Checklist AC Electric Power Operation Shutdown Procedure

Operating Instructions

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Pre-Operation Pre-Operation Checklist (After a longer transport or a period of standstill.)

1.

Inspect the jumbo for damage incurred during shipping and handling.

2.

Clean the jumbo if necessary.

3.

Tighten all loose bolts.

10. Grease all grease fittings.

11. Check the oil level in the hydraulic tank. Check oil level with booms and feeds retracted. Check the oil level indicator mounted on the oil tank. If the hydraulic oil is low, fill it with recommended hydraulic oil, (section 3). Use the electric filling pump and the 10 micron filter. If the tank has been empty, check that the inlet lines leading from the tank to the two (2) pumps are filled with hydraulic oil. If the jumbo has not been used for a long time extend all cylinders, then retract.

Recheck oil level in the hydraulic tank.

NOTE Do not operate the electric fill pump for more than two (2) minutes. Off-time must be twice on-time. Keep AC power on while fill pump is in use.

2

1

3

Fig 2-1 Hydraulic Filler Pump Location 1. Fill Pump 2. On/Off Switch 3. 10 Micron Fill Pump Filter

1 Fig. 2-2 Hydraulic Tank 1. Hydraulic Oil Level Gauge

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Operating Instructions

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Setting Up for Drilling Before the jumbo is chaired, a properly sized electrical cable should be connected. It should be noted that the ampacity of electric cable is generally limited by the temperature rating of the insulation, and cannot adequately dissipate heat. Other factors such as the desired cable length and the voltage drop due to resistance should also be considered when sizing the cable, as well as, the ambient temperature of the operating environment. Consult the cable supplier for recommendations.

AC Electric Power Operation After the jumbo has been set up and properly chaired, the electric cable must be connected to the AC electric power source in the shaft.

WARNING: It is highly recommended that the connection point for the cable plug-in be equipped with a ground check and or ground fault interrupter system to protect personnel and equipment from potentially dangerous electrical faults.

Applying AC Power For Drilling WARNING: BEFORE initial start-up of jumbo, the main switchbox must be checked by a qualified electrician. All circuit breakers should be closed and the main switchbox door should be closed and secured with the fasteners.

The main switchbox door IS NOT to be opened by the jumbo drill operator.

ALL checks are to be made by a qualified electrician.

1.

Turn on the electric power and close the main circuit breaker on the main switch box.

2.

Connect the flushing water (fig. 2-19) and start the water booster pump from the pushbutton box located above the drill console.

NOTE If the pump will not start, the cable may be improperly connected and the phase sequence relay on the machine may not be energized, preventing starting.

Operating Instructions

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Setting Up for Drilling Water System Check Check the water pressure. The hydraulic drilling system is water cooled (not air cooled). At least 50 PSI (3.4 bar) water pressure should be available before starting the main pump units. For drilling use minimum 80 PSI (5.5 bar).

NOTE If water pressure is too low (below 35 psi), the low water pressure switch installed at the water booster pump outlet will not allow the pump to run.

Start Main Pumps

1



Be sure that all control levers are in neutral position. Use the start button on the drilling console (fig. 2-3) to start the pumps.

3

Fig. 2-3 Push-button Box 1. Power Light (ON) 2. Water Booster Pump Pull Start, Push Stop 3. E-Stop 4. Hydraulic Pump Pull Start, Push Stop

4

2

2 1

1 2 3 4

Fig. 2-4 Main Panel 1. Lube Run Light 2. Low Lube Light 3. Low Air Light 4. Run Hourmeter 5. Percussion Hourmeter 6. Incorrect Phase Light 7. Power On 8. Emergency Stop

Fig. 2-5 Water Booster Pump 1. Water Booste r Pump 2. Low Pressure Switch

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1

5

7 8

2-4



6

Fig. 2-5a Air and Water Connections 1. Air Connection 2. Water Connection Operating Instructions

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Shutdown Procedures Emergency Electrical Shutdown 1.

In the event of an emergency situation the machine must be shutdown immediately.

There are three E-Stop locations provided: button on the Main Panel in the frame (fig. 2-4), button on the Pushbutton box on the operator's consol (fig. 2-6), pull cord at the operator's panel (fig 2-6). You can activate the emergency shutdown system and shutdown the entire unit by depressing one of these buttons or pulling the cord.

2.

In case of fire, activate the fire supression sytem: (1) actuator located on the frame (fig. 2-7) and (1) actuator located on the console (fig. 2-8). Take cover or move a safe distance away from the machine.

3.

Before starting the machine again, be sure all controls are in the OFF or NEUTRAL position. If a machine malfunction was the cause for the emergency shutdown, be sure all necessary repairs have been made.

CAUTION: ONLY use the EMERGENCY SHUTDOWN in case of emergency.

Machine damage could result by not following NORMAL ELECTRICAL SHUTDOWN procedures.

 





Fig. 2-7 Frame Fire Supression Actuator

Fig. 2-8 Console Fire Supression Actuator Fig. 2-6 Opertor Console E-Stops Operating Instructions

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Shutdown Procedures Normal Electrical Shutdown 1.

Be sure drills are fully retracted on the feeds and all controls to the OFF or NEUTRAL position.

2.

Shut off the water booster pump from the pushbutton box located above the drill console.

3.

Push the pump stop button on the pushbutton box.

4.

Open the main circuit breaker on the main switchbox.

5.

Disconnect the cable plug, air and water from mine supply (if applicable).

Automatic Machine Shutdown Functions 1.

If, during operation, the unit shuts down unexpectedly the following conditions may apply: Low hydraulic fluid level.

2.

High hydraulic fluid temperature in the hydraulic reservoir.

3.

Automatic fire supression system activated by 'check fire' wire.

The operator should frequently monitor all gauges and instruments, noting any unusual reading which may lead to the machine shutting itself down unexpectedly. An instrument or gauge reading out of normal range indicates a potential problem which should be reported to the maintenance department.

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Operating Instructions

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Notes

Operating Instructions

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Drilling Procedures Setup For Drilling 1.

Lower the galloway to ensure the jumbo is close enough to the drill face so all holes can be drilled without repositioning the galloway.

2.

Move the boom and feed into position for drilling the first hole.The angle of the drill feed to the drill face is controlled by the feed swing lever and the feed dump lever.

3.

2a.

The feed is automatically kept parallel. See description of feed paralleling system.

Once selected, the angle of the feed will automatically be kept the same from hole to hole.

2b.

Select the angle of the feed (hole) with the feed dump lever and the feed swing lever and then place the drill holes where they are wanted on the drill face with the boom lift, boom swing, boom extension, feed roll levers.

Use the feed extend lever and sting the end of the feed into the rock. The feed extend lever may be left in the full forward position to maintain constant stinging pressure on the feed extension cylinder. This will assist the operator in maintaining hole alignment.

CAUTION: Never use drill feed and feed extension cylinder at the same time.

Never press the bit against the rock face with the feed extension.

NOTE In some instances, it is not possible to use feed sting due to a very uneven tunnel face, in this case collaring must be done very carefully.

4.

Turn water valve ON and be sure water is flowing out of the drill bit.

5.

Pull the drill rotation lever into the forward rotation (counterclockwise) position.

6.

Pull the drill (hammer) lever and the feed lever down as desired to collar the hole.

7.

After the hole is collared (drill bit about 2-3" [5-7.6 cm] deep into the rock), apply full pressure to the drill and feed for normal drilling by pulling feed lever all the way down. Maximum feed pressure can be decreased by the regulator if required.

NOTE At the end of the hole the drill operator may choose to turn the water off and turn the air on to blow the hole clean as the drill is being retracted.

11. Move the rotation lever back to center position to stop drill rotation when the bit clears the hole.

12. Turn air/water valve OFF. The drilling sequence is now complete.

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Operating Instructions

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Drilling Procedures Manual Hole Collaring: Push the hammer lever down. Ease the feed lever down and move the rock drill down on the feed until the bit contacts the rock. Do not pull the feed lever all the way down until collaring of the hole has been accomplished. After you have drilled a collar of 2 to 3" (5 to 7.6 cm), ease the feed lever into its down position.

Changing Bits Push the hammer valve forward or ON. Leave the rotation lever in its neutral position. Use the feed lever, and gently push the bit against the rock. Let it hammer for a few seconds.

NOTE

Operating the hammer for extended periods with loose drill string parts can cause damage to shanks, couplings, bits and drill steel.

Checks During Drilling Check for oil leakage from hoses and connections. If encountered, make necessary corrections.

Never tighten hydraulic hose connections while system is pressurized. Check for water leakage from the front head of the rock drill. If extensive leakage is observed, stop drilling and call the service person to replace water seals.

Watch for excessive vibration of the hoses. Excessive vibration indicates the drill accumulators are not properly charged. In such a case, stop drilling immediately and call for the service person.

Watch for hoses becoming tangled when the boom is moved, particularly, when boom roll and feed roll functions are used.

Check the return filter indicator while the drill is operating. When running with clean oil and new filters the indicator should show an operating pressure of 4-6 psi. If the indicator reaches 40 psi the filters will bypass. Operating a unit with dirty filters will lead to premature failure of hydraulic components.

Operating Instructions

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Drill Control Functions

5

4

2

3

Figure 2-9 Instrument Panel

1

1. Return Filter Indicator 2. Air Pressure Gauge 3. Water Pressure Gauge 4. Rotation Pressure Gauge 5. System Pressure Gauge (also Hammer Pressure) 6. Hydraulic Reservoir Temp.

6

Figure 2-10 Drill Control Console

7

8

9

10

11

12

7. Feed Roll 8. Feed Extend 9. Feed Swing 10. Feed Dump 11. Boom Roll 12. Boom Extend 13. Boom Lift 14. Drill Rotation Control 15. Hammer Control Valve 16. Feed Control 17. Feed Pressure Regulator 18. Air/Water Valve 19. Feed Pressure Gauge

13

4

18

19 14

2-10

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Operating Instructions

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Drill Control Functions Drill Console / Instrument Panel 1.

Return Filter Indicator - monitors life of the filter cartridge.

2.

Air Pressure Gauge - monitors air pressure so maximum drilling efficiency can be maintained by the hydraulic rock drill. Located on the instrument panel on the frame (fig. 2-9).

3.

Water Pressure Gauge - monitors flushing pressure so maximum drilling efficiency can be maintained by the hydraulic rock drill. Located on the instrument panel on the frame (fig. 2-9).

4.

Rotation Pressure Gauge - monitors hydraulic pressure in drill rotation circuit.

5.

System Pressure Gauge (also Hammer Pressure) - monitors hydraulic pressure at the main pump, and at the hydraulic rock drill.

6.

Hydraulic Reservoir Temp - monitors temperature of hydraulic fluid.

7.

Feed Roll - Moving lever down, rolls feed to right (clockwise), moving lever up rolls feed to left (counterclockwise).

8.

Feed Extend - Moving lever down, extends feed down, moving lever up, retracts feed.

9.

Feed Swing - Moving lever down, swings bottom of feed toward you, moving lever up swings bottom of feed away from you.

10. Feed Dump - Moving lever up, moves front of feed left, moving lever down moves front of feed right.

11. Boom Roll - Moving lever down, rolls boom to right (clockwise), moving lever up, rolls boom to left (counterclockwise).

12. Boom Extend - Moving lever down extends boom down, moving lever up retracts boom.

13. Boom Lift - Moving lever up, moves boom left, moving lever down moves boom right.

14. Drill Rotation Control - Moving the lever down, starts rock drill rotation in the counterclockwise direction, which is the normal direction for drilling. Moving the lever up reverses rotation for uncoupling steel or any function requiring reverse rotation.

15. Hammer Control Valve - controls the flow of oil to the hammer oscillator. The valve is partially open in the ON (down) position, which starts the flow of oil to the oscillator for collaring the hole.

After the hole is properly collared full hammer pressure and full feed pressure is applied.

16. Feed Control - Moving the lever down, causes the rock drill to move down toward the end of the feed. Moving the lever up reverses the oil flow to the feed, and the rock drill returns to the top of the feed.

17. Feed Pressure Regulator - used to reduce maximum feed pressure in poor ground conditions. It can also be used for collaring.

18. Air/Water Valve provides flushing water or blowing air for hole cleaning.

19. Feed Pressure Gauge - monitors hydraulic pressure to feed drive (may be adjusted to drilling conditions).

Operating Instructions

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Drill Control Valve The drill control valve bank provides easy control of rotation, feed and hammer functions.

Rotation The rotation section is comprised of a directional valve and an inlet section. The pressure setting of the rotation pump is normally 2600 PSI (179.3 bar) and the flow set at approximately 12-18 GPM (45.5-68.3 liter/m).

Feed The Feed forward circuit is adjusted at the feed valve B port to 1600 PSI. The Feed reverse circuit is adjusted at the A port to 2600 PSI. The forward feed for collaring can be reduced by a reducing valve that will dump Feed LSB port to the tank.

Drill (Hammer) Hammer maximum pressure is dictated by the system pressure. Collaring can be achieved by backing off on the hammer control handle.

Fig. 2-12 Drill Control Valve

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Operating Instructions

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Drill Control Valve

Fig. 2-13 Drill Control Valve Schematic

Operating Instructions

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Feed Paralleling System The parallel system is comprised of a master cylinder, mounted at the boom base, and a slave cylinder, mounted at the positioner. In the vertical plane, the feed dump cylinder is the slave.

When the boom lift lever is operated at the console, fluid is directed to the main boom lift cylinder causing the boom to move left or right. The master cylinder is forced to move because of a direct mechanical connection to the boom. As the master cylinder moves, fluid is displaced from the end of the cylinder in which the piston is moving. That fluid moves to the same end of the slave cylinder causing the slave cylinder to move in the opposite direction (see fig. 2-14). This reverse direction cylinder movement causes the feed to lift/dump inversely to the boom movement, thereby maintaining the same angle to the face at all times.

The parallel system is equipped with an externally mounted dual counterbalance valve. This valve performs the following functions: 1.

Prevent fluid from returning to the reservoir through the control spool when parallel system is functioning.

2.

Provides a relief path for excessive pressure in parallel system.

When the operator moves the positioner dump control lever, fluid is directed through the external counterbalance valve to the cylinder being operated. Because the master cylinder is mechanically locked in its position, the fluid is directed to the positioner cylinder. This allows independent operation of the positioner dump.

Fig. 2-14 Feed Parallelism System for Feed Dump

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Operating Instructions

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Constant Sting Circuit This feature allows the operator to maintain constant pressure on the feed stinger while drilling.

This aids in maintaining drill steel alignment and reduces down time from stuck or broken drill steels.

The boom control valve bank is set for a maximum pressure of 3400 PSI (234.5 bar). By utilizing a pressure reducing valve in the feed extension circuit, the pressure can be reduced to allow stinging.

Adjustment Procedures (to be done by the maintenance department): 1.

Remove the forward direction feed extension hose at the cylinder; cap the fitting.

2.

Install a 3000 PSI (206.9 bar) gauge in the end of the hose.

3.

Start the pump.

4.

Push feed extension lever forward.

5.

Adjust valve (LSB port) to desired pressure of 1500 PSI (103.5 bar)

6.

Remove gauge and replace the hose on the cylinder.

Fig. 2-15 Constant Sting Circuit.

Operating Instructions

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Notes

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Operating Instructions

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Section 3

Adjustments and Preventative Maintenance

Adjustments and Maintenance

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Initial Machine Setup and Adjustments During the initial commissioning of the jumbo, a number of adjustments must be made for local conditions and application requirments. This will be done by or under the supervision of Terex / Reedrill service technician commissioning the unit. Any time major repairs are made to the machine or conditions change, mine maintenance personnel will also need to make appropriate adjustment.

NOTE

Virtually all pressure and flow control devices on this jumbo utilize adjustment screws fitted with jam nuts to secure the screws in place after adjustments have been made. It is important to hold the adjustment screw firmly in place while tightening the jam nut as the adjustment may tend to change as the nut is tightened. Settings should be rechecked after tightening the jam nut to insure the adjustment has been secured at the proper setting.

Boom Auto-Parallelism: The boom auto-parallelism feature normally requires no adjustment. This feature utilizes a master / slave hydraulic cylinder fluid displacement design in the vertical plane to automaically maintain a given angle of the drill feed to a vertical drill face as the boom is repositioned for each new drill hole. As the boom is moved in the vertical plane, fluid is displaced from a master cylinder in a corresponding slave cyliner ( the feed dump cylinder) causing the drill feed to move in the opposite direction from the boom to maintain the same drilling angle into the drill face. Dual pilot operated counterbalance valves are used to act as both check and relief valves for this circuit in such a way that as long as the pressure required to actuate the slave cylinder is less than the relief setting of these valves, all fluid remains in the circuit and the slave cylinder is actuated to perform its paralleling movement. If the relief setting of the counterbalance valves is less than the pressure required to move the slave cylinder, the fluid is diverted from the circuit and slave cylinder does not move.

Drill Air / Oil Mist Lubricator: The lubricator assembly is located in the front of the jumbo frame. The air / oil mist lubrication system oprates continuously with mine air. The oil reservoir holds approximately 4 liters of rock drill oil. A level switch is provided to determine the oil level in reservoir. It should be filled approximatly every four operating hours with a high quality moderatly low viscosity rock drill oil (ISO 100 grade is perferred). The air pressure should be adjusted to 35-45 PSI. The lubricator should provide between 600 and 900 milliliters (.6 to .9 liters) per hour to the drill front end. It is important to never operate the drill if lube oil is not being supplied to the drill. Not only must the lube oil reservoir never be allowed to run dry while drilling, but close attention must be given to the hoses and fittings feeding the air / oil mist into the drill. If they become broken or damaged, they must be replaced or repaired before continuing to drill.

The lubricator only requires a few cfm of air flow to draw lube oil from the reservoir and atomize it into the air stream.

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Adjustments and Maintenance

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Initial Machine Setup and Adjustments Drill Rotation Speed and Pressure: The hydraulic flow for the drill rotation function is provided by the rotation piston pump (45cc).

This is a pressure compensated piston type pump. The pump is driven by the AC electric motor (75HP).

The stand-by pressure normally needs no adjustment as it is factory preset to 250 PSI. This is pressure produced by the pump when in the unloaded condition. If adjustment is ever required, this pressure may be set as high as 400 PSI, but a much lower setting is normal.

Adjustmemt screws on the compensator are provided to adjust the maximum pressure the pump can generate, (pressure override or POR control), and to adjust the stand-by pressure. The pressure override (pump compensator) needs only to be set at the highest pressure required of any function during drilling - 2600 PSI. This pump is designed to provide sufficient oil flow to operate the rotation function at a slightly higher speed than the maximum rotational speeds used in normal drilling applications. As this pump is of the variable displacement type, it can be adjusted to provide proper flow based on the RPM required. The inlet section of the drill control valve allows the flow from this pump to be diverted to the hydraulic tank at low pressure when the directional control section for rotation is in the neutral (center) position. As the directional control section is actuated to start the drill rotation function, the hydraulic fluid flow increases as movement of the valve spool increases. The excess hydraulic fluid flow provided at the top of the valve near the handle attachment. Adjustment of these screws will allow the valve to be set to provide the proper amount of hydraulic fluid to set the maxumim desired rotation speed in both directions. The rotation is normally operated between 140-160 RPM for drilling a 2 1/2" diameter hole and 190-210 RPM for a 2" diameter hole. The speed is usually determined by measuring the speed of a freely rotating drill rod with a hand held strobe type tachometer. This is set at 3000 PSI. The pump compensator max pressure is set at 2600 PSI. Depending upon conditions, operating pressure for this circuit is usually between 800 and 1400 PSI.

Drill System Pressure: The hydraulic flow to the hammer, feed and all positioning functions is provided by the main piston pump (100cc). This is a pressure compensated piston type pump. The pump is driven by the AC electric motor (75HP).

The stand-by pressure normally needs no adjustment as it is factory preset to 250 PSI. This is pressure produced by the pump when in the unloaded condition. If adjustment is ever required, this pressure may be set as high as 400 PSI, but a much lower setting is normal.

Adjustment screws on the compensator are provided to adjust the maximum pressure the pump can generate, (pressure override or POR control), and to adjust the stand-by pressure. The pressure override (pump compensator) needs only to be set at the highest pressure required of any function during drilling - 3100 PSI.

Adjustments and Maintenance

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Initial Machine Setup and Adjustments Boom Control Valve and Feed Extend Pressure: The Feed extend function allows the feed guideshell (feed beam) to extend from the feed mounting table so the rubber stinger pad at the forward end of the feed can be secured to the rock for stabilizing the feed during drilling. The feed extend hydraulic cylinder must operate at much lower pressure than most other functions of the drilling system, typically at 1100 to 1500 PSI. The hydraulic control for this function is located on the seven section boom control valve on the drill operator's console. The Feed extend pressure is factory set at 1500 PSI on the valve section (LSB port). The feed extend directional control section of the boom control valve is slightly different from all the other sections, in that a pressure limiter adjuster is provided in the body of the valve (opposite the handle end) which controls the maximum feed extend operating pressure. The feed extend pressure is set at the factory to 1100 to 1500 PSI, but depending upon the application, this may require adjustment to assure a secure achoring of the feed at the rock face, but not with such force that hole alignment cannot be maintained or undue stresses are placed on the boom

Drill Feed Pressure: The drill feed pressure is set at the factory at 1600 PSI. This is simply a starting point and most likely will have to be readjusted for the particular conditions and applications encountered. If the feed pressure is set too high, excessive drill front end wear, bent drill steel and premature bit wear may result. If feed pressure is too low, breaking or excessive heating of the drill shank, drill steel and couplings (if used), and damage to the rock drill may result. During the first few holes being drilled, the feed pressure should be reduced until a loose clattering sound from the drill is being noted, and then increased until this loose clattering abates. This should be used as the inital feed pressure setting for the particular conditions. During the first few weeks of drilling with a new machine, some additional feed pressure adjustments will likely be required to optimize drill performance and drill string and bit life. The feed pressure is adjusted to 1400 PSI via LSB. The adjustment knob protrudes outward slightly from the console top plate. As with all other pressure controls on the jumbo, turning the feed regulator knob clockwise will increase the pressure, and turning the knob counter-clockwise will reduce the pressure.

3-4

Adjustments and Maintenance

BI615822

Drill Operator's Maintenance Checklist Check Every Shift 1.

Check the oil level in the hydraulic tank by reading the oil level indicator mounted on the tank.

Only refill with the fill-pump and through the filter. Do not mix types of fluid.

2.

Check bolts on booms and look for any signs of structural damage or weld cracking. Tighten all loose bolts and have any structural damage or cracked welds repaired immediately by a qualified service person.

3.

Check to insure that the drill mounting bolts on rock drills are tight.

7.

Grease the booms at all lubricating points. * This model has 2 grease fitting manifolds provided to aid in greasing these points. One is in the unit's frame, one is on the boom.

8.

Grease the feeds at all lubricating points.

9.

Grease the lubrication points on the rock drills, preferably twice during the shift. Apply a couple of shots with a grease gun. Overgreasing can damage shank seal or penetrate into the rotation motor. If the front part of the drill is getting too hot, it may be an indication for need of lubrication.

If greasing does not help, contact the service person for inspection and repair.

Check Regularly Every time the drill shank is changed, take out the chuck and the thrust plate and check if they are in good condition. If the thrust plate shows signs of overheating, it may be due to lack of lubrication; it could also indicate drilling with dull bits or wrong feed pressure.

Fig. 3-1 Grease fitting manifold - Frame

Fig. 3-3 Drill Lubricator Fig. 3-2 Grease fitting manifold - Boom Adjustments and Maintenance

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Machine Set-Up & Pressure Setting Chart Machine Set-up and Pressure Settings NOTE The following settings are starting points only. Each application normally requires different settings of some functions.

COMPONENTS 1. Rotation Pump Stand-by Pressure 2. Rotation Pump Compensator 3. Rotation Pump Flow 4. Drilling Valve Relief 5. Main Pump Stand-by Pressure 6. Main Pump Compensator 7. Main Pump Flow 8. Main Pump Spike Relief 9. Boom Function Valve Relief 10. Feed Pressure 11. Drill Pressure Return 12. Hydraulic System Temperature 13. Hydraulic System Shutdown 14. Drill H.P. Accumulator 15. Drill L.P. Accumulator

3-6

SPECIFICATIONS 250 PSI 2600 PSI (194.4 bar) *depends on RPM 3000 PSI 250 PSI 3100 PSI 60 HZ = 40-42 GPM (151-159 liters) 3400 PSI 3400 PSI 1600 PSI Feed Forward, 2600 PSI Feed Reverse 150 PSI Should be 120F - 160F (49-71C) Non Adjustable 180F 30% of Inlet Pressure (870 PSI maximum) 30% of Outlet Pressure (50 PSI maximum)

Adjustments and Maintenance

BI615822

Bolt Torque Specifications Torque Values: Bolts, Screws and Studs (Lubricated or Plated) Tolerance Values in all cases to +5% - 0% of the value listed below.

SAE Grade 5 ASTM A-449 Tightening Torque (Ft.Lbs.) Nominal Diameter K=.15 1/4 6 5/16 13 3/8 23 7/16 35 1/2 57 9/16 82 5/8 113 3/4 200 7/8 322 1 483 UNC 1-1/8 596 1-1/4 840 1-3/8 1102 1-1/2 1462 1-3/4 1714 2 2576 2-1/4 3768 2-1/2 5155 2-3/4 6996 3 9231 1/4 7 5/16 14 3/8 26 7/16 40 1/2 64 9/16 91 5/8 127 UNF 3/4 223 7/8 355 1 528 1-1/8 668 1-1/4 930 1-3/8 1254 1-1/2 1645 1-3/4 1879 2 2857 2-1/4 4127 UN 2-1/2 5726 2-3/4 7693 3 10064

SAE Grade 8 Tightening Torque (Ft.Lbs.) K=.15 9 18 33 55 80 115 159 282 455 681 966 1363 1786 2371

10 20 37 60 90 128 180 315 502 746 1083 1509 2034 2668

Note: K=.15 for plated or lubricated fasteners. K=.20 for non-lubricated fasteners. Torque values for non-lubricated fasteners can be found by multiplying the plated fastener value by 1.33.

Adjustments and Maintenance

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Hydraulic General Information Rotation The rotation is controlled by the pump flow limiter, fine tuned by the stroke limiter on the rotation valve section, rotation speed is controlled by adjusting the stoke limiter adjustments on the rotation valve section.

Feed Pressure Adjustment The feed pressure is controlled by the feed valve LSB relief and is adjustable between 0-psi and 1600-psi. This is done by screwing in or out the feed pressure regulator. The feed pressure is limited to a maximum of 1600-psi by the feed pressure load sense relief.

Hammer Pressure Hammer pressure is at system pressure 3100 psi with a loss of 300 psi = 2800 psi.

Constant Feed Sting The constant feed sting feature is used to keep the feed in contact with the rock face while drilling. The constant sting lever is detented and has a reduced forward pressure 1500-psi, which is adjusted, on the LSB port of the valve.

Feed The feed consists of a feed beam with a feed cylinder to move the drill cradle. When you move the feed valve handle down the feed cylinder starts the drill's travel down on the feed. This Feed has been equipped with the following: • Feed Beam(s) - constructed of a heavy duty aluminum extrusion.

• E-Z Lock Inserts - used in all aluminum components to prevent thread damage.

• Stinger Assembly - the stinger is mounted inside the rail for added strength and eliminates damage to the end of the beam. An oversized stinger pad helps stabilize the drill steel.

• Travelling Centralizer Assembly - a durable nylon pulley that requires no lubrication. Steel centralizer bushings are encased in a high temperature material. Bushings are designed to reduce wear and vibration.

• Hose Bulkhead - eliminates the need for a complete feed replacement if damage occurs.

• Hose Drum Assembly - a one piece nylon unit with ribbed grooves used to maintain hose alignment. A wide flange contains the cable.

• Drill Mounts - used to prevent wear to the aluminum cradle.

• Quick Release Cable System - swivel mounts that allow for fast and easy cable replacement. Front and rear cables are identical.

• Cradle Assembly - angled cradles that incorporate replaceable nylon sliders. Adjustment is maintained with a moveable slider assembly.

• Foot Adapters and Boom Cradles - aluminum extrusion that is fastened to the bottom of the feed rail to eliminate wear.

3-8

Adjustments and Maintenance

BI615822

Fig. 3-4 Hydraulic Diagram

Hydraulic General Information

Adjustments and Maintenance

3-9

BI615822

General Preventive Maintenance WARNING: DO NOT attempt lubrication or service while the machine is running.

BE SURE the hydraulic system is not pressurized before loosening any connections or parts.

CAUTION: To avoid unnecessary machine repairs, keep the following in mind when handling fuels and lubricants: Clean grease fittings with a clean cloth before greasing.

Keep all fuels and lubricants stored in clean and tightly sealed containers.

Keep filler caps clean of dust and oil.

Replace filters inside a shop or when there is no visible dust in the air.

NEVER reuse paper filters.

Wash metal parts of filters with clean oil, but do not wipe the parts with a cloth.

Wipe up any overspill with a clean cloth.

Keep dirt and dust from entering any fluid system.

Keep the fuel storage containers and system filled.

Watch for metal filings on any magnetic drain plugs. Filings are a sign of internal component wear or maladjustment. If the source can be determined and repaired as part of scheduled maintenance, costly down time can be avoided later.

Preventive maintenance is vital to personnel protection and lower operating costs. The Jumbo requires regularly scheduled maintenance to keep it operating efficiently.

The maintenance intervals presented in this section are recommended by Terex Reedrill. The actual operating environment of the machine may dictate a reanalysis of the maintenance interval for a specific operation.

For efficient maintenance of the machines, it is suggested that a log book be established to record the date and engine hours when each maintenance was done.

3-10

Adjustments and Maintenance

BI615822

Preventive Maintenance Chart List of Terex Reedrill Shaft Jumbo General Fluids and Lubricants with Capacities Location

Lubricant

P/N

Capacity

Grease

NLG1 No.2 Grease

N/A

400 mg Tube

Drill Grease

Super Impact Grease

312810

400 mg Tube

Drill Lube Oil (Rock Drill Oil)

ISO 100 grade

N/A

4L (1 gal.)

Hydraulic System

Anderol Bioguard FRHF46

N/A

Reservoir = 144L (38 gal.)

Needs Repair

Repaired OK

Checked OK

2000 Hours

1000 Hours

500 Hours

250 Hours

50 Hours

Description

Daily

DAILY

Comments

Check hydraulic oil level X X X X X X Check drill lubricator oil level X X X X X X Inspect and lubricate boom and X X X X X X drill feed Check fire extinguisher, fire X X X X X X supression system Check all safety items: safety X X X X X X chains, etc.

To perform the following checks start the power pack and bring to operating temperature Check instrument gauges and X X X X X X lights Check for hydraulic oil leaks X X X X X X Check hydraulic return filter X X X X X X indicator (replace if necessary) Check hydraulic pressure filter X X X X X X indicator (replace if necessary) Check reservoir fill pump filter X X X X X X indicator (replace if necessary) Check Boom/Drill functions X X X X X X Inspect Drill for leakage X X X X X X (hydraulic oil, water) Check tension on feed cables X X X X X X (adjust if needed) Check hose tension on boom X X X X X X positioner (adjust if needed) Check water pump X X X X X X (if applicable)

Adjustments and Maintenance

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BI615822

Preventive Maintenance Chart

X X X

Needs Repair

X X X

Needs Repair

2000 Hours

X X X

Repaired OK

1000 Hours

X X X

Comments

Repaired OK

500 Hours

X X X

Checked OK

250 Hours

Check/clean water strainer Lube all points on jumbo Lube hydraulic cylinder pins & pivot pins

50 Hours

Description

Daily

50 HOURS (WEEKLY)

Comments

3-12

500 Hours

1000 Hours

2000 Hours

X X X X X

X X X X X

X X X X X

X X X X X

X X

X X

X X

X X

X X X

X X X

X X X

X X X

X

X

X

X

X

X

X

X

X

X

X

X

X X

X X

X X

X X

Checked OK

250 Hours

Hydraulic System Obtain hydraulic oil sample Inspect hydraulic tank breather Inspect hydraulic valves Inspect cylinders (wear/leaks) Inspect overall hydraulic components condition Inspect hosing condition Change hydraulic filters Inspection of old filters: Frame and Components Record impact hours:______ Check for loose bolts Check for unusual machine wear or damage Inspect Boom and Feed Electrical Inspect main panel for functionality/damage Inspect drill console for functionality/damage Check all fuses Inspect all external wiring and cables

50 Hours

Description

Daily

250 HOURS (MONTHLY)

Adjustments and Maintenance

BI615822

Preventive Maintenance Chart

X

X

X

X

X

X

X X

X X

X X

X X

Needs Repair

X

Needs Repair

X

Comments

Needs Repair

X

Repaired OK

X

Repaired OK

2000 Hours

X

Comments

Repaired OK

1000 Hours

X

Checked OK

500 Hours

Drill Check accumulator charge pressure (charge if necessary) Serial # :__________________ Hour meter : ______________ Inspect auto-lube system Miscellaneous Inspect Fire extinguisher Record last hydrostatic test date: _____________________ Inspect fire supression system Lube electric motor bearings

250 Hours

50 Hours

Description

Daily

250 HOURS (MONTHLY)

Comments

2000 Hours

X X

X X

X X

Checked OK

1000 Hours

Change hydraulic oil Re-seal Drill

500 Hours

250 Hours

50 Hours

Description

Daily

500 HOURS (3 MONTHS)

Adjustments and Maintenance

X X

X X

Checked OK

2000 Hours

500 Hours

250 Hours

1000 Hours

Rebuild feed assembly Rebuild drill saddle assembly

50 Hours

Description

Daily

1000 HOURS (6 MONTHS)

3-13

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Preventive Maintenance Chart

Rebuild boom assembly Rebuild feed mount assembly Replace boom hosing

3-14

Needs Repair

Repaired OK

Checked OK

2000 Hours

1000 Hours

500 Hours

250 Hours

50 Hours

Description

Daily

2000 HOURS (1 YEAR)

Comments

X X X

Adjustments and Maintenance

BI615822

System Checks Prior to Start for New or Reconditioned Machines A.

Start-Up - Grease and Oil

1.

Grease all fittings - multi-purpose grease (NLGI#2)

2.

Hydraulic oil (AW46 or Equivalent)

3.

Prime Main Pump

B.

Back Out - Pump Compensator

C.

Back Out Pressure Reducing Valves for Feed Extend

D.

All Levers in Neutral

E.

Install All Gauges

1.

Pump suctions

2.

System pressure

3.

Charge pressure

4.

Feed extend

F.

Use Auxiliary Hydraulic Power Source to Retract all Boom and Feed Functions 1.

Feed retracted

2.

Drill retracted

3.

Booms inboard and horizontal

G.

Charge Drill High Pressure Accumulators

H.

Charge Drill Low Pressure Accumulators

Adjustments and Maintenance

3-15

BI615822

Hydraulic System Checks Main Hydraulic Pumps New or Reconditioned Machines

3-16

1.

Connect electric power.

2.

Connect air and water lines.

3.

Check for leaks.

4.

Jog pump motors and check for proper rotation.

Jog water pump motor and check for proper rotation.

5.

Install suction and by-pass gauges.

6.

Set control valves in neutral position.

7.

Start pump motor. Check for leaks.

8.

Check suction pressure - 1 - 2" (2.5 - 5 cm) Hg.

9.

Observe hydraulic oil level.

11.

Observe hydraulic tank flow and aeration.

13.

Run main pump and cycle all functions slowly to remove any remaining air.

14.

Cycle all functions and observe system for leaks or any other malfunctions.

15.

Check system temperature - 1200 F (490 C).

Adjustments and Maintenance

BI615822

Section 4

Glossary

Glossary

4-1

BI615822

Glossary of Terms The following is a list of terms commonly used in the mining and construction industry. This list is not exhaustive, but pertains primarily to underground jumbos as discussed in this manual.

Belleville Washer .......... Another name for “Spring Washer”.

Bleed(ing) ...................... A procedure to remove trapped air from a fluid.

Boom ............................ Vertical structure that supports and positions the feed. One end attaches to a pivot at the boom bulkhead at the bottom of the frame, the other end attaches to the positioner. Some booms are extendable, others are fixed (non-extendable).

Centralizer .................... A device used to keep the drill steel centered with respect to the centerline of the feed. An end centralizer is located at the front end of the feed. It sometimes has jaws that open and close around the drill steel, but allow the drill steel to pass through and rotate freely. A travelling centralizer is used on long feeds to support the mid-point of the drill steel.

Chaired ......................... A term that refers to the locking of the Jumbo into the galloway to ready it for drilling.

Collar(ing) ..................... A term referring to starting a hole, whereby reduced hammer and feed pressure is used to get a hole started or "collared" straight.

Drifter ........................... Another term for a rock drill. In this manual the term "rock drill" is used for consistancy.

Drill Rod......................... Another name for “drill steel”.

Drill Steel ....................... A specially made length of steel with threads on both ends to allow coupling together and to the drill shank and drill bit. The drill steel transfers energy from the drill to the bit and is also used to convey air or water for hole cleaning.

Drill Steel Coupling ......... A devise used to join two pieces of drill steel together and to join the drill steel to the drill shank, by means of internal female threads or sometimes male and female threads.

Drill String ..................... Refers to multiple pieces of drill steel joined together.

Extend .......................... To move object OUT or AWAY from machine in the horizontal plane, or to move object TOWARD the ground in the vertical plane.

Feed .............................. Structure used to support the rock drill and drill steel. The rock drill moves up and down the feed by means of a cable via. hydraulic cylinder drive system.

Feeds come in various lengths, depending on length of drill steel required.

Feed Dump .................. Term used to describe the position of the feed relative to the centerline of the boom. Dump UP tilts back of feed towards boom, dump DOWN tilts the back of feed away from boom.

Feed Mounting .............. Another name for “Feed Table” Feed Table .................... A device that attaches to the positioner by means of a pin and hydraulic cylinder, and is used to support the feed.

Galloway ....................... A term used for the working platform, frame or structure that houses the winches that lower the clams, Jumbo, water reservoir, ect.

4-2

Glossary

BI615822

Glossary of Terms Hammer ....................... A term sometimes used for "rock drill".

Hammer(ing) ................ A term used to describe the action of the drill hammer or piston striking the drill shank, thus transferring the blow energy through the drill steel to the bit.

Oscillator ...................... A term sometimes used for the rock drill "hammer".

Rattle ............................ A term used to describe loosening the drill string joints by “hammering” the drill steel, by using short bursts of the hammer with no feed pressure on the drill bit.

Retract ......................... To move object AWAY from the ground in the vertical plane.

Rock Drill ...................... The device that provides the percussive and rotation forces for drilling.

Sometimes referred to as the “hammer” or “drifter”.

Shank ............................ A specially made short length of steel with splines at one end and threads at the other end. The splined end is inserted into the rock drill and engages the splines of the chuck end of the drill. The drill steel attaches to the other end by means of a coupling.

Sinking .......................... A term used to descibe the advancment of the shaft bottom.

Spring Washer .............. A cup shaped washer that, when compressed provides a “spring like” action. Also called "belleville washer".

Sting ............................. To apply pressure to the rock face by extending the feed to prevent the feed from moving while drilling.

Stinger .......................... A device attached to the end of the feed which contacts the rock face to stabilize the feed while drilling.

Swing ........................... Term used to indicate movement of a component to right or left, relative to the machine as viewed from rear.

Glossary

4-3

BI615822

Notes

4-4

Glossary