To sum up, the soft start mode of b

To sum up, the soft start mode of belt conveyor is the key technical link that must be mastered in the field of engineering application. Through the description and analysis of the above motor driving mode, the AC variable frequency speed regulating device and controllable starting transmission device are quite effective methods to solve this key link. However, due to the high cost of CST device and the high price of products, and the technology of coal mine is not perfect, it is difficult to produce CST for motor transmission system For many domestic factories and mining enterprises, the product price is expensive, and due to the limitations of the coal mine technology, it is difficult to solve the problems well. We must invite professional personnel of the factory for maintenance and repair, so as to increase the maintenance cost and increase the production cost of the products. Although the cost of AC motor variable-frequency speed regulation is very expensive at the beginning, among these motor drive modes, the speed drive mode of AC motor variable-frequency speed regulation has not only good soft start ability and speed regulation performance, but also convenient maintenance and good reliability.