Explosion-proof type coal mining machine motor electric control device

Abstract

The invention relates to an explosion-proof type coal mining machine motor electric control device which comprises a magnetic starter and further comprises a control transformer, a conversion controller and an isolating switch. The isolating switch is arranged on a main circuit of a coal mining machine motor and is connected with a three-phase power supply output from the secondary side of the magnetic starter, a primary side power supply of the control transformer is connected with the secondary side of the magnetic starter, a first secondary power supply circuit is connected with a remote control circuit, a second secondary side power supply circuit is connected with a left / right traction and lifting / descending control circuit of the coal mining machine motor, and a lead-out line of the magnetic starter is connected with a manual control circuit. The explosion-proof type coal mining machine motor electric control device adds the mechanical / electric locking function in an electric control circuit of an explosion-proof motor, improves the quality of the motor, prolongs the service life of the motor, avoids troubles caused by using misoperation underground a coal mine, guarantees personnel safety, reduces human and material resource loss and guarantees zero load of the isolating switch before operation from the mechanical aspect and the electric aspect.

Description

technical field [0001] The invention relates to a motor control technology, in particular to an electric control device for an explosion-proof shearer motor. Background technique [0002] The explosion-proof and intrinsically safe water-cooled three-phase asynchronous motor is the most important electrical equipment in the electric drive system. It is suitable for electrical equipment products used in explosive environments and explosive gas mixture environments. It has simple structure and reliable operation, and is widely used in industrial and mining industries. Petroleum is an indispensable power equipment for electrification. [0003] The existing explosion-proof and intrinsically safe water-cooled three-phase asynchronous motor mainly includes a stator, a rotor and a wiring cavity. The wiring cavity mainly includes: a machine base, a large cover plate, an isolating switch operating mechanism, and a small cover plate. When performing on-off or start-stop control on the...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the explosion-proof motors in the prior art, such as the inability to avoid misoperation and the inability to effectively ensure personal safety during the start-stop process, the technical problem to be solved by the present invention is to provide a motor that can avoid misoperation and improve operational reliability. Explosion-proof shearer motor electric control device

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