Emergency opening and closing device for high-voltage cabinet middle door

Abstract

The invention discloses an emergency opening and closing device for a high-voltage cabinet middle door. The emergency opening and closing device comprises an emergency operation rod, a closing handle, an opening handle, a sleeve, a spring and a linkage mechanism. The linkage mechanism is arranged on the inner side of the middle door and comprises a linkage rod I, a linkage rod II, a linkage rod III, a linkage rod IV, a sliding block I and a sliding block II, wherein the rear end of the linkage rod I is hinged to the front end of the opening handle, the rear end of the linkage rod II is hinged to the front end of the closing handle, the sliding block I is sleeved on the linkage rod I, the sliding block II is sleeved on the linkage rod II, the upper end of the linkage rod III is hinged to the front end of the emergency operation rod, and the lower end of the linkage rod III is hinged to the top of the sliding block I, the upper end of the linkage rod IV is hinged to the front end of the emergency operation rod, and the lower end of the linkage rod IV is hinged to the top of the sliding block II. The emergency opening and closing device for the high-voltage cabinet middle door has the advantages of being exquisite in appearance, simple in structure, convenient to install, flexible, reliable and the like.

Description

technical field [0001] The invention relates to an opening and closing device for a middle door of a high-voltage cabinet. Background technique [0002] The high-voltage cabinet opening and closing device is used to open and close the handcart indoor circuit breaker when the staff receives the operation instruction, and is designed for the purpose of controlling the primary high-voltage electricity. It can be used for existing domestic products. There are mainly the following technical problems: [0003] On the one hand, the instrument door of the high-voltage cabinet has a secondary opening and closing button, which can effectively control the primary power through the secondary power, but when the secondary power supply inside the high-voltage cabinet cannot supply power, or the voltage of the secondary power supply is unstable, it cannot provide powerful power At this time, the opening and closing control operation of the circuit breaker cannot be performed at this time;...

AI Technical Summary

Problems solved by technology

[0003] On the one hand, the instrument door of the high-voltage cabinet has a secondary opening and closing button, which can effectively control the primary power through the secondary power, but when the secondary power supply inside the high-voltage cabinet cannot supply power, or the voltage of the secondary power supply is unstable, it cannot provide powerful power At this time, the opening and closing control operation of the circuit breaker cannot be performed at this time; on the other hand, although there is a manual opening and closing button on the handcart panel of the circuit breaker in the existing design, when the handcart is pushed to the working position, the middle switch must be opened. If the door is operated again, the staff are exposed to the space without explosion-proof level. If the three-phase high-voltage short circuit is caused by improper operation or mechanical failure, and then an explosion occurs inside the cabinet, it will endanger personal safety and cause irreparable losses.

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