Patent ID: 9079613
Filing Date: 2015-07-14
Classification: B60W,B62D,E02F,F02D

Abstract:
1. A crawler work vehicle comprising: an engine; left and right travel devices that respectively have a crawler and a drive wheel for driving the crawler; a power transmission device that transmits power from the engine to the drive wheels of the left and right travel devices; left and right steering clutches that are disposed between the power transmission device and the left and right drive wheels and transmit or block power; left and right steering brakes that are respectively disposed between the left and right steering clutches and the left and right drive wheels, and that brake rotation of the left and right drive wheels; a rotation speed detecting device that detects an output rotation speed of the steering brakes; a brake hydraulic pressure obtaining device that obtains a brake hydraulic pressure supplied to the steering brakes; and a brake protecting means that refers to the output rotation speed and the brake hydraulic pressure to compute a heat rate of the steering brakes, and that executes a protection process of the steering brakes by reducing the engine output upon determining the heat rate that was computed is equal to or greater than a preset first threshold.