Interlocking mechanism of operation shaft and back door in high voltage distribution cabinet

Abstract

The invention discloses an interlocking mechanism of an operation shaft and a back door in a high voltage distribution cabinet. The tail end of the operation shaft penetrates through a distribution cabinet back side plate and then extends out of the outer side of the back door. The tail end of the operation shaft is fixedly provided with a long-strip-shaped stopping block. The back door is provided with a long hole which can be used for the long-strip-shaped stopping block to pass through. A fixing block is fixedly arranged on the back side plate. A first through hole and a second through hole are formed in two supporting arms of the fixing block respectively. The operation shaft penetrates through the second through hole and the first through hole in the fixing block in sequence. A sliding block is arranged on the operation shaft in a sleeved mode. The sliding block and the operation shaft can slide relatively and cannot rotate relatively. A locating block is arranged on the operation shaft. A spring is arranged between the sliding block and the locating block. The two ends of the spring abut against the sliding block and the locating block respectively. Locking structures which can be locked with each other are arranged between the fixing block and the sliding block. The mechanism is high in safety performance, the sliding block is flexible in sliding and cannot be blocked easily, and locking is reliable.

Description

technical field [0001] The invention relates to a safety interlock mechanism between an operating shaft and a rear door in a high-voltage power distribution cabinet. Background technique [0002] In the high-voltage power distribution cabinet, the opening and closing actions of the grounding switch are usually controlled by the operating shaft. A long block is installed, and the back door is provided with a long hole through which the long block can pass; a slider is set on the operating shaft, and the sliding block and the operating shaft can slide relative to each other but cannot rotate relative to each other. A positioning block is also arranged on the operating shaft, and a spring is arranged between the sliding block and the positioning block. The two ends of the spring are respectively against the sliding block and the positioning block. Contradicts with the back door; when the long bar block is aligned with the elongated hole on the back door, the back door can be o...

AI Technical Summary

Problems solved by technology

[0003] The main disadvantage of the high-voltage power distribution cabinet rear door interlock mechanism with the above structure is that the slider on the operating shaft bears the self-gravity of the operating shaft. It is easy to make the slider inflexible or even stuck when sliding back and forth, making the operator unable to work normally

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