Mechanical interlocking apparatus of movable central-positioned switch cabinet

Abstract

The invention relates to a mechanical interlocking apparatus of a movable central-positioned switch cabinet, wherein the anti-error mechanical interlocking apparatus of the movable central-positioned switch cabinet is simple in structure, convenient to operate and capable of ensuring the operation security. The switch cabinet comprises a cabinet body and a moving handcart, wherein the cabinet body is provided with an upper valve and a lower valve, and the moving handcart is movably arranged in the cabinet body. The mechanical interlocking apparatus comprises a pair of interlocking assemblies, wherein the interlocking assemblies are respectively arranged at two sides of the moving handcart. The mechanical interlocking apparatus effectively prevents the staff from mistakenly touching an electrified part, thereby eliminating potential safety hazards, and being safe and reliable.

Description

technical field [0001] The invention relates to a safety protection device for a switch cabinet, in particular to a mechanical interlock device for removing a middle-mounted switch cabinet to prevent malfunction. Background technique [0002] At present, removing the central switchgear is a relatively common power supply equipment, but in the normal equipment maintenance (inspection) or pre-test process, since the mobile handcart needs to be moved from the working position to the test position, and then the mobile handcart is pulled out The overhaul (inspection) and pre-test of related items are carried out on the circuit breaker outside the cabinet. Although the upper and lower static contact chambers are equipped with protective isolation baffles (valves), and the isolation baffles are mechanically linked with the mobile handcart, so far A considerable part of the switch central cabinets and the circuit breaker handcarts that are in service in the power grid are only equip...

AI Technical Summary

Problems solved by technology

[0002] At present, removing the central switchgear is a relatively common power supply equipment, but in the normal equipment maintenance (inspection) or pre-test process, since the mobile handcart needs to be moved from the working position to the test position, and then the mobile handcart is pulled out The overhaul (inspection) and pre-test of related items are carried out on the circuit breaker outside the cabinet. Although the upper and lower static contact chambers are equipped with protective isolation baffles (valves), and the isolation baffles are mechanically linked with the mobile handcart, so far A considerable part of the switch central cabinets and the circuit breaker handcarts that are in service in the power grid are only equipped with mechanical linkage devices, and there is no mechanical interlocking device, especially the upper and lower static contact chambers after the mobile handcart is pulled out of the cabinet. The front protective isolation baffle can still be moved up and down and opened at will, which can easily cause workers to accidentally touch live parts (static contacts) accidentally, resulting in electric shock accidents, making it difficult to ensure the personal safety of workers

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