Grounding switch and rear door interlocking device and switchgear using the interlocking device
A technology of grounding switch and interlocking device, which is applied in the field of switch cabinets and can solve problems such as complex structure of interlocking devices
Active Publication Date: 2020-10-20
TIANJIN PINGGAO INTELLIGENT ELECTRIC +2
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- Claims
- Application Information
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Problems solved by technology
[0007] The purpose of the present invention is to provide a grounding switch and rear door interlocking device to solve the problem of complex structure of the interlocking device in the prior art; the purpose of the present invention is also to provide a switch cabinet using the interlocking device
Method used
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Embodiment approach
[0079] This interlocking device can realize the sequential interlocking device of the rear door 1 that can be opened only when the grounding switch 500 is closed when the back door 1 of the cable room of the switch cabinet is closed. The main interlocking operation is implemented as follows:
[0080] Only when the back door 1 of the switch cabinet is closed, the grounding switch 500 can be opened: (the back door 1 is open, the grounding switch 500 is closed) if Figure 24 to Figure 29 As shown, in the open state of the back door 1, the drive plate 3 is under the tension of the extension spring 5, and the striker 2 protrudes outside the rear cabinet, and the bending installation surface of the drive plate 3 is limited by the bending surface of the side plate of the switch cabinet. Only the lance 2 can extend out of the cabinet; the rear door 1 is closed, and the rear door 1 is closed to form a displacement, and the lance 2 is pushed to drive into the cabinet, and the transmissio...
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The invention relates to a grounding switch and rear door interlocking device and a switch cabinet employing the same. The switch cabinet comprises a cabinet body, wherein a rear door is arranged at arear side of the cabinet body, a grounding switch is arranged at a middle part of the cabinet body along a forward-backward direction, the switch cabinet also comprises an interlocking device, the interlocking device is used for achieving interlocking of the grounding switch and a rear door and comprises an operation front shaft, the operation front shaft is matched with the grounding switch in atransmission way, the interlocking device also comprises an operation rear shaft, the operation rear shaft is in linkage with the operation front shaft and is used for locking and unlocking the reardoor, axial lines of the operation front shaft and the operation rear shaft are staggered, an eccentric shift piece is arranged on the operation front shaft, an eccentric bearing piece is arranged onthe operation rear shaft and is used for swinging under shift of the eccentric shift piece so that the operation rear shaft is driven to rotate and linkage of the operation front shaft and the operation rear shaft is achieved, the interlocking device also comprises an elastic piece, and the elastic piece is used for applying an action force applied onto the eccentric bearing piece so that the eccentric bearing piece moves towards the eccentric shift piece. Compared with the prior art, the interlocking device is simpler in structure, and meanwhile, the cost is also favorably reduced.
Description
technical field [0001] The invention relates to an interlocking device for a grounding switch and a rear door and a switch cabinet using the interlocking device. Background technique [0002] In the existing high-voltage switchgear, there is an interlock device between the back door of the high-voltage cable room and the grounding switch of the switch cabinet. The function that the interlock device can realize is: only when the back door of the switch cabinet cable room is closed, can the grounding The switch is opened, and the rear door can only be opened when the grounding switch is closed. The interlocking device can prevent the operator from accidentally entering the electrified interval and ensure production safety. [0003] In the current high-voltage switchgear, there are often clear standards for the left and right dimensions of the switchgear and the distance between the busbars, and there are also clear standards for the insulation distance between the busbars and...
Claims
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IPC IPC(8): H01H9/22H02B1/30
Inventor 张罗锐陈利民刘易雄王江涛张聚会杜敬敬
Owner TIANJIN PINGGAO INTELLIGENT ELECTRIC