Interlocking Mechanism of Operation Shaft and Back Door in High Voltage Power Distribution Cabinet

Abstract

The invention discloses a safety interlock mechanism between an operating shaft and a rear door in a high-voltage power distribution cabinet. The tail end of the operating shaft passes through the rear side plate of the power distribution cabinet and extends to the outside of the rear door. The tail end of the operating shaft is fixedly installed with a Strip block, the back door is provided with the elongated hole that can let the strip block pass through, the fixed block is fixedly arranged on the rear side plate, and the first and the second are respectively arranged on the two support arms of the fixed block. Two through holes, the operating shaft passes through the second and first through holes on the fixed block in sequence, a slider is set on the operating shaft, the slider and the operating shaft can slide relative to each other but cannot rotate relative to each other, and the operating shaft also A positioning block is provided, a spring is provided between the sliding block and the positioning block, and the two ends of the spring respectively abut against the sliding block and the positioning block, and a locking structure capable of interlocking is also provided between the fixing block and the sliding block; The safety performance of the device is high, the sliding block slides flexibly, it is not easy to get stuck, and the 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

Images