BELT-TENSION ADJUSTING STRUCTURE OF ENDLESS-TRACK CAR

摘要

PURPOSE:To permit the proper tension adjustment of an endless belt corresponding to the deflection of the belt by installing a level control valve which detects the deflection of the belt and operates and adjusting the tension of the belt by the operation of the level control valve. CONSTITUTION:An endless-track car is equipped with the idler wheels 2 and driving wheels 3 installed at the front and rear of a traveling frame 1 and an endless belt 4 laid between the idler wheels 2 and the driving wheels 3. A level control valve 12 for detecting the deflection of the belt 4 is installed onto a supporting body 44 installed at the front position contiguous to an idler 11 on the traveling frame 1 through installation bolts under the belt 4 so that the vertical installation position can be adjusted. When the valve 12 detects the deflection of the belt 4 and operates, a traveling hydraulic motor circuit 13 and a belt adjusting cylinder 14 are connected, and the cylinder 14 is hydraulic-operated. Therefore, tension adjustment is performed through the shift of the idler wheels 2 connected to the cylinder 14.