Automatic adjusting device for clearance of disc brake working clamp

The utility model relates to an automatic gap adjusting device for disc brake working calipers, which comprises a brake disc fixed on a wheel, and a fixing frame is arranged on the wheel. The braking assembly is arranged on the fixing frame and comprises a braking part, a moving block and a driving structure, the braking part is in sliding connection with the fixing frame, the driving structure is connected with the braking part, and when the moving block moves towards the fixing frame, the braking part can be driven to act so as to brake the brake disc; the compensation assembly is connected with the brake part and the moving block and comprises a threaded sleeve connected with the driving structure, and when the brake part brakes the brake disc and losses are caused, the compensation assembly can drive the driving structure to act so as to drive the moving block to move away from the brake part; the distance between the brake pad and the moving block is constant, and the braking time cannot be prolonged und