The mine hoist is an important equipment in the coal mine and non-ferrous metal mine production process. The safe operation of the hoist is directly related to the company's production and economic benefits. In order to overcome the shortcomings of the traditional communication winding motor string resistance speed regulation system, the frequency conversion speed control technology is used to transform the hoist, which can complete the constant torque control in the full frequency range. The hydraulic mechanical brake needs to be stored and combined with the hydraulic mechanical brake and the brake of the frequency converter during the drawing process. The load characteristic of the hoist is a constant torque potential load, and the starting torque is large. When the inverter is selected, the margin is appropriately left. Because the hoist motor is in an electric condition for most of the time, only when a small amount of regenerative energy occurs, the inverter is connected to a brake unit and a braking resistor, so that it can satisfy the regenerative braking when the heavy vehicle goes down, and the smoothness is completed. Downstream. The hydraulic mechanical brake is controlled by the original control system together with the frequency converter. Whether the mechanical brake is controlled by the frequency of the inverter reaching the port, when the output frequency of the inverter reaches the set value during starting. After the hoist is transformed by the frequency conversion speed regulation, the operation process of the system has not changed much.
The hoist chain allows the entire hoist to perform more useful work situations and reach the technically modified form of operation.
