The Characteristics Of The Transmission Principle Of The Belt Conveyor

　　⑴The traction of the belt conveyor is transmitted by the friction between the drive roller and the belt. Therefore, the belt must be tightened with a tensioning device to make the belt have a certain initial tension at the separation of the transfer roller.

　　⑵The tape runs on the rollers together with the cargo. The tape is both a traction mechanism and a load-bearing mechanism. There is no relative movement between the cargo load and the tape, which eliminates the frictional resistance between the tape and the cargo load during operation. Because the roller is equipped with rolling bearings, there is rolling friction between the tape and the roller, so the running resistance is greatly reduced, thereby reducing power consumption and increasing the transportation distance. For a belt conveyor, the traction transmission capacity is determined by the tension of the belt, the wrapping angle of the belt on the drive roller and the coefficient of friction between the belt and the drive roller. It is necessary to ensure that the belt of the belt conveyor does not slip on the drive roller and operates normally. In production practice, corresponding measures must be taken according to different situations. Improving the transmission capacity of traction can start from the following aspects:

　　⑴ Increase the tension (initial tension). When the belt conveyor is in operation, the belt will stretch, causing the traction to drop. Therefore, according to the situation, the belt should be properly tensioned by the tensioning device to increase the tension of the belt to increase the traction.

　　⑵Increase the friction coefficient. The specific measures are: protect the wooden lining or rubber liner covered on the transmission drum to increase the friction coefficient, and on the other hand, reduce the amount of water and coal to prevent the friction coefficient from decreasing.

　　⑶ Increase the wrap angle. Because of the poor working conditions and large traction required for underground belt conveyors, double-drum transmission is often used to increase the wrap angle.