A TENSION CONTROLLING DEVICE FOR CATERPILLAR

摘要

A tension control device for a caterpillar is provided to return tension of the caterpillar into its original state when the tension of the caterpillar becomes weak by installing a tension maintenance unit in a frame. A tension control device for a caterpillar comprises a frame(10) formed with a guide groove(11), which is inclined toward a traveling direction, a moving plate(20) inserted into the guide groove to move back and forth relative to the guide groove, a wheel coupled to the moving plate to support an inner surface of the caterpillar, and a tension maintenance unit(40). The tension maintenance unit is fixed at the inside of the frame not to be exposed to the outside. The frame includes at least one guide rail(31), which is attached to the frame and is able to guide the moving plate.