B-1 .
B-1 .
Hydraulic Power Generating System Circuits for swing, elevating, telescoping, main and auxiliary winches. 1. The hydraulic oil provided from the pumps is controlled (onloaded/unloaded) by the solenoid valve. This solenoid valve for automatic stop is switched by the AML output to control the vent ports of the relief valve (elevating, telescoping) and the relief valve (main winch, auxiliary winch). When the PTO switch is turned on, the solenoid valve for automatic stop is shifted from the middle position to the AML vent position, making the condition of this circuit onloaded. 2. The pressurized oil delivered through the P1 port of the rotary joint is supplied to the circuits for the main winch and the auxiliary winch. The pressurized oil delivered through the P2 port of the rotary joint is provided to the circuits for elevating and telescoping.
This oil, however, is
supplied to the circuits for the main winch and the auxiliary winch while neither elevating nor telescoping operation is done. The pressurized oil delivered through the P6 of the rotary joint is provided to the circuit for swing.
Circuit for pilot pressure, air conditioner 1. The pressurized oil delivered through the P3 port of the rotary joint is supplied to these circuits. Pressurized oil reduced by the hydraulic valve(pilot pressure) is supplied to the circuit for the pilot pressure. 2. The pilot pressure is supplied to the swing brake release circuit, main winch brake release circuit, auxiliary winch brake release circuit, and pilot circuits for crane operations. 3. The pressurized oil delivered through the hydraulic valve(pilot pressure) is supplied to the circuit for the air conditioner.
3
WB02-0340E
