Cabinet door interlocking device for switch cabinet

A technology of interlocking device and switchgear, applied in the direction of electrical switches, electrical components, circuits, etc., can solve problems such as hidden safety hazards, and achieve the effects of flexible operation, high safety and reliability, and simple structure

Inactive Publication Date: 2019-10-29
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual maintenance operations, maintenance personnel usually ignore the closing operation of the switch mechanism and directly open the cabinet door for maintenance operations, which poses a great potential safety hazard

Method used

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  • Cabinet door interlocking device for switch cabinet
  • Cabinet door interlocking device for switch cabinet
  • Cabinet door interlocking device for switch cabinet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] The grounding switch in this embodiment is a three-position isolating grounding switch, and the three-positioning isolating grounding switch has a grounding switch drive shaft 51 and a mechanism front plate 53 .

[0029] The switch mechanism in this embodiment is a circuit breaker arranged in the switch cabinet, and the circuit breaker has a switch mechanism drive shaft 52 inside.

[0030] see figure 1 , The switchgear cabinet door interlocking device of this embodiment includes a cabinet door lock 2 , a grounding interlock 4 , a cam mechanism 6 and a mechanism interlocking plate 7 .

[0031] The state that the dead bolt 22 locks the cabinet door in the cabinet door lock 2 is defined as the dead bolt locking position as follows; on the contrary, as Figure 4 , dead bolt 22 locks are released to the state of the cabinet door as the dead bolt unlocked position.

[0032] Such as Figure 8 , the grounding interlocking plate 41 in the grounding interlocking member 4 is in...

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PUM

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Abstract

The invention relates to the field of switchgears, and in particular relates to a cabinet door interlocking device for a switch cabinet. The cabinet door interlocking device for the switch cabinet comprises a cabinet door lock, a grounding interlocking member and a mechanism interlocking plate. The cabinet door lock comprises a lock seat and a lock tongue hinged on the lock seat. The upper end ofthe lock tongue comprises a grounding switch limiting portion and a switch mechanism limiting portion. The lower end of the lock tongue comprises a hook for locking the switch cabinet door, and the middle portion of the lock tongue comprises an operating handle. The grounding interlocking member comprises a grounding interlocking plate which comprises an upper arm and a lower arm. The upper arm ofthe grounding interlocking plate is connected with the grounding switch drive shaft of a grounding switch. The lower arm of the grounding interlocking plate cooperates with the grounding switch limiting portion of the lock tongue. The middle portion of the grounding interlocking plate is hinged to the mechanism front plate of the grounding switch. The mechanism interlocking plate is connected with the switch mechanism drive shaft of a switch mechanism. The mechanism interlocking plate comprises a blocking piece which cooperates with the switch mechanism limiting portion of the lock tongue. The interlocking of the grounding switch, the switch mechanism and the switch cabinet door can be realized.

Description

technical field [0001] The invention relates to the field of switchgear, in particular to a cabinet door interlocking device for a switch cabinet. Background technique [0002] The current switchgear cabinet door includes the switchgear lower door. When the switchgear is working normally, the switchgear is equivalent to a large live interval, preventing staff from accidentally entering the live interval and causing personal injury and equipment damage. The existing switchgear usually adopts an external door lock to lock the lower door of the switchgear. Under normal operating procedures, the staff can only open the lower door of the switchgear when the switchgear stops running. The gap between the switchgear door and the grounding switch is usually Set the interlock device, the lower door of the switch cabinet can only be opened when the three-position switch is in the grounding closing position. It cannot be opened, which ensures the safe use of the switchgear. However, t...

Claims

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Application Information

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IPC IPC(8): H01H9/22
CPCH01H9/22
Inventor 朱宏辉贾华景
Owner WUHAN UNIV OF TECH
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