F-1.
F-1.
Winch System Remote Control Pressure Vent
3. The overload relief valve (down) regulates the
[NOTICE]
maximum pressure in the hoist-down circuit for
The remote control valve is connected to the hydraulic pilot control valve at the two points having the same symbols such as "a2" and "b2". For a "1M1D"-specification crane without the auxiliary winch, seven portions "*2" are plugged.
the main winch.
This valve suppresses the surge
pressure that may occur in a sudden hoist-down operation so as to assure a smooth hoist-down movement.
In case of sudden stoppage of
1. The main winch is controlled by the hydraulic pilot
hoist-down movement, the relief valve integrated
method. The pilot pressure from the remote
in the counterbalance valve operates to protect
control valve controls the hydraulic pilot control
the hydraulic motor for the main winch.
valve.
4. Circuit for remote control pressure vent
2. The maximum pressure in the main winch
In this hydraulic circuit, the hydraulic valve (pilot
hydraulic circuit is regulated by the relief valve
pressure) controls the pilot pressure to the remote
(main winch, auxiliary winch).
control valve (main winch) and the hydraulic valve (winch brake release).
4
WF02-0340E
