Coal mining machine traction system and control method thereof

Abstract

The invention relates to a coal mining machine traction system and a control method thereof. The system comprises a coal mining machine traction control module, a transformer, a traction contactor and an explosion-proof integrated variable frequency motor, and the transformer, the traction contactor and the explosion-proof integrated variable frequency motor are sequentially connected. The primary side of the transformer is a power supply input end of the coal mining machine, the control input end of a control loop of the traction contactor is connected with the control output end of the coal mining machine traction control module, the control module of the explosion-proof integrated variable frequency motor is in two-way communication connection with the coal mining machine traction control module, and the coal mining machine traction control module is provided with an information interaction interface. The method comprises a start control method, a stop control method and a speed control method. The overall occupied space of the traction system of the coal mining machine can be reduced, wiring of the traction system is reduced, the installation and debugging complexity of the coal mining machine is reduced, meanwhile, the frequency conversion assembly and the motor share the heat dissipation device, the design cost and the accessory cost are reduced, and miniaturization of the coal mining machine is facilitated.

Description

technical field [0001] The invention relates to a special traction system structure and a traction control method for a coal shearer. Background technique [0002] The traction system is one of the necessary components of the shearer, which plays a role in providing power for the shearer to move. In most cases, the traction system of the shearer is installed in the electrical control box of the shearer, which not only occupies a large space in the electrical control box of the shearer, but also is inconvenient for installation and debugging. The traditional coal shearer traction system includes traction control center, frequency converter, traction asynchronous motor, contactor, transformer and other related components. Among them, the frequency converter and traction asynchronous motor are relatively large in size. When designing a shearer, it is necessary to consider the frequency converter and The wiring and heat dissipation problems of the traction asynchronous motor, t...

AI Technical Summary

Problems solved by technology

In most cases, the traction system of the shearer is installed in the electrical control box of the shearer, which not only occupies a large space in the electrical control box of the shearer, but also is inconvenient for installation and debugging

The traditional coal shearer traction system includes traction control center, frequency converter, traction asynchronous motor, contactor, transformer and other related components. Among them, the frequency converter and traction asynchronous motor are relatively large in size. When designing a shearer, it is necessary to consider the frequency converter and The wiring and heat dissipation problems of the traction asynchronous motor, the design cost and the cost of accessories are relatively high

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