CONTROL DEVICE FOR INPUT CLUTCH OF WORKING MACHINE

摘要

A control device for an input clutch of a working machine, enabling a relationship between clutch pressure of the input clutch and a braking force (braking pressure) produced by a brake device to be easily adjusted with a simple construction. A draining oil path bifurcating from an oil path that supplies pressurized oil to the input clutch is provided, and the draining oil path is communicated with a tank. A pressure reducing valve is provided in the draining oil path, and the pressure reducing valve increases, depending on its valve position, the quantity of pressurized oil flowing in the draining oil path to reduce clutch pressure of the input clutch. A brake operation means is mechanically connected to a valve operation member (spool) of the pressure reducing valve, and the valve operation member of the pressure reducing valve is mechanically connected, for example, by a spring to a valve operation member (spool) of a control valve for braking.