Patent ID: 7549522

Claim:
A control device for an input clutch of a work vehicle, which is applied to a work vehicle in which a driving force of an engine is transmitted to drive wheels through a traveling power train and also transmitted to a hydraulic pump for a work machine, comprising: an input clutch which is disposed between the engine and a transmission on a power transmission path of the traveling power train of the engine; a brake means for decelerating the work vehicle; a brake control valve which operates to increase a braking force of the brake means depending on a valve position; a brake operation means which is disposed to operate the brake control valve; a draining oil passage which is an oil passage branched from an oil passage for supplying a pressure oil to the input clutch and communicated with a tank; and a pressure reducing valve which is disposed in the draining oil passage and operates to increase the pressure oil flowing through the draining oil passage according to a valve position and to decrease a clutch pressure of the input clutch, wherein: the brake operation means is mechanically coupled with the pressure reducing valve, and the pressure reducing valve is mechanically coupled with the brake control valve through a spring, one end of the spring being connected to the pressure reducing valve, and the other end of the spring being connected to the brake control valve.