Baking system for permanent magnet direct driving mechanism, control method and gate opening and closing mechanism

Abstract

The invention discloses a baking system for a permanent magnet direct driving mechanism. The braking system comprises a brake, a braking controller, a battery, an emergency hydraulic brake and a shortcircuit braking contactor. The battery supplies power to the emergency hydraulic brake. An alternating-current hydraulic station provides braking power when a power source of the brakes fails. A braking controller controls the alternating-current hydraulic station. A contact of the short circuit braking contactor is connected to the input end of a permanent magnet synchronous motor in the permanent magnet direct driving mechanism, and the control end is connected with the braking controller. The invention further provides a control method of the braking system for the permanent magnet directdriving mechanism and a gate opening and closing mechanism including the braking system for the permanent magnet direct driving mechanism and the control method. The braking system can achieve emergency braking under the normal condition or abnormal condition, hoisted weight can be safely put down by turning on and off the emergency hydraulic brake after emergency braking is carried out, and the braking system, the control method and the gate opening and closing mechanism are safe, reliable, simple and efficient.

Description

technical field [0001] The invention specifically relates to a braking system, a control method and a gate opening and closing mechanism for a permanent magnet direct drive mechanism. Background technique [0002] With the development of national economy and technology and the improvement of people's living standards, electric energy has become an indispensable secondary energy source in people's daily production and life, bringing endless convenience to people's production and life. [0003] The permanent magnet direct drive mechanism is a mechanism widely used in the industry for permanent magnet synchronous motors. The hydraulic disc brake is a kind of braking device used in the permanent magnet direct drive gate opening and closing mechanism. The traditional way is to control the opening and closing of the hydraulic disc brake by the AC brake hydraulic station; it needs to stop during the normal working process of the gate opening and closing. When the lifting mechanism...

AI Technical Summary

Problems solved by technology

However, this method is uncontrollable, requiring skilled operators to slowly open and close the gate several times; if there is a slight carelessness, the gate will fall rapidly, causing damage to the gate and other equipment; and this method takes too long , does not meet the needs of rapid repair of faults

[0005] In addition, in the existing braking system, when the hydraulic disc brake fails, the gate stalls and slides, which will eventually cause serious safety accidents

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