Interlocking device for earthing switch and door of switch cabinet

A technology of grounding switch and interlocking device, which is applied in the field of high-voltage switchgear, can solve the problems of low reliability of electrical interlocking, and achieve the effect of simple and reliable structure

Active Publication Date: 2016-12-07
HUAYI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the interlocking device in the switchgear in the prior art and usually only realize the interlocking between the earthing switch

Method used

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  • Interlocking device for earthing switch and door of switch cabinet
  • Interlocking device for earthing switch and door of switch cabinet

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] Such as Figure 1-2 As shown, the grounding switch for high-voltage switchgear of the present invention and the circuit breaker door and cable room door interlocking device include a grounding switch operating shaft 7, a shaft sleeve 6 fixedly connected to the grounding switch operating shaft 7, and the shaft sleeve 6 and linkage The plate 5 abuts, the upper end of the linkage plate 5 is fixedly connected with a tension spring 4, and the linkage plate 5 is driven by the shaft sleeve 6 and the tension spring 4 to move up and down. The two ends of the linkage plate 5 are respectively connected to the base plate through a pin groove mechanism. The linkage plate 5 is provided with vertical sliding grooves, and the base plate is provided with pins. The linkage plate 5 is guided to move in the vertical direction by the cooperation of the pin grooves. L-shaped reversing members 3 are hinged on both ends of the linkage plate 5. The reversing members 3 are mutua...

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PUM

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Abstract

The invention discloses an interlocking device for an earthing switch and a door of a switch cabinet. The interlocking device is characterized by comprising an earthing switch operating shaft, a lock catch mechanism and a transmission mechanism, wherein the earthing switch operating shaft is connected with the earthing switch and rotationally arranged on a base plate and moves between a power-on position and a power-off position; the lock catch mechanism is provided with a rod bolt arranged between a door leaf and a door frame of the door and a latch hole plate matched with the rod bolt; the transmission mechanism enables the earthing switch operating shaft and the rod bolt to be in transmission connection, at the power-on position, the rod bolt and the corresponding latch hole plate are locked, and at the power-off position, the rod bolt and the corresponding latch hole plate are unlocked. Through the interlocking structure, interlocking of a circuit breaker room door and a cable room door can be realized at the same time.

Description

technical field [0001] The invention relates to the technical field of high-voltage switch cabinets, in particular to an interlocking device for a grounding switch and a door of a switch cabinet. Background technique [0002] When the high-voltage switchgear fails or is overhauled, in order to ensure personal safety, the grounding switch must be closed before the operator can enter. Therefore, the interlocking of the grounding switch and the door in the high-voltage switchgear is indispensable. During the operation of the high-voltage switchgear, "five preventions" must be achieved: 1. After the vacuum circuit breaker trolley in the high-voltage switchgear is closed at the test position, the trolley circuit breaker cannot enter the working position; 2. The grounding in the high-voltage switchgear When the knife is closed, the trolley circuit breaker cannot be closed; 3. When the vacuum circuit breaker in the high-voltage switchgear is closed, the back door of the panel is lo...

Claims

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Application Information

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IPC IPC(8): H01H31/06
CPCH01H31/06
Inventor 金旭晏文曲田晓越陈洋波
Owner HUAYI ELECTRIC CO LTD
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