履带起重机操作手册

a) When the crawler crane and auxiliary lifting device are in non-working condition, never park the vehicle near the embankment liable to collapse or low-lying land subject to be washed away by water.

b) Set down the load on the ground, and if necessary lower the boom frame to some extent; lock the slewing gear and traveling gear and apply the brake.

c) Shut down the engine and cut off power.

d) Check if there is leakage in some place and repair it if necessary.

e) Clean such components as movable parts and exposed part of the piston rod of cylinder.

f) Check if bolts and nuts are fitted tightly. Any defects found should be eliminated at once. It is prohibited to operate the crane with fault.

g) Record the operating conditions and abnormal symptoms.

h) Check if the quantity of tools and accessories meet specified requirements.

i) Lock the operator’s cab or safety devices.

j) Take precaution measures against storm or lightning strikes.

k) Take precaution measures against frostbite in winter.

Warning

To avoid engine from freezing in winter, drain all cooling water when park the vehicle, if no anti-freeze is added into the cooling water.

履带起重机操作手册

Operator’s Manual for Crawler Crane

Operator’s Manual for Crawler Crane

3.10 Hand signals for controlling crane operations

The hand signals for controlling crane operations are shown in the table 3-13

Table 3-13 Hand signals for controlling crane operations

Ser. No. 1 2

Signal Preparation

Description

Hold the right arm stretched out over the head, the palm facing forwards.

Use main hook

Tap fist on the safety helmet, then give further hand signals.

3

Use auxiliary hook

Bend the left hand and hold it upward, tap the underside of the elbow with the right hand, then give further hand signals.

Illustration

Ser. No. 4 5 6

Signal Hoist Lower Raise load slowly

Description

Bend the right arm and hold it upwards. The palm faces forwards. The hand makes small, circular movements.

Hold the right arm down with a 30° angle to the body The extended index finger points downwards. The hand makes small, circular movements

Stretch out right arm. The palm faces upwards Wave the hand up repeatedly.

Illustration

ZCC1100H Crawler Crane 3-53

Operator’s Manual for Crawler Crane