Belt replacing method for rubber belt winding and unwinding device of belt conveyor

Provided is a belt replacing method for a rubber belt winding and unwinding device of a belt conveyor. The method includes the steps that a vertical rotating roller is installed on a rack after the belt conveyor is shut down, a tensioning trolley is loosened, the rubber belt winding and unwinding device is placed on the head of the belt conveyor, an old rubber belt is cut off, a new rubber belt is connected, and the other end of the old rubber belt is connected with a belt winding device through the gap of a belt replacing device; a hydraulic pump station is started, an oil cylinder moves downwards, and the pressure of the rubber belt is controlled by a pressure sensor so that the rubber belt can be pressed; a hydraulic motor is started, a caterpillar track performs transmission, the rubber belt is matched with the belt winding device under the action of friction force so that the old rubber belt can be wound, and meanwhile the new rubber belt is gradually laid; the hydraulic motor stops running, a card is punched on the new rubber belt layer of the belt conveyor and fixed, a traction oil cylinder is started to drive an upper caterpillar track to move upwards so that the rubber belt can be loosened, the belt replacing device and the vertical rotating roller are taken down, the rubber belt is tensioned by a traveling trolley after vulcanization is performed, and a no-load test run is carried out. According to the method, the new rubber belt is laid while the old rubber belt is wound, the belt replacing process is simplified, manpower and material resources are saved, and the method is applicable to replacement of various types of belt conveying rubber belts under different working environments.