Interlock device

Abstract

The invention discloses an interlock device which comprises an anti-falling rod movably connected with a cabinet body, the anti-falling rod comprises a cross rod and end rods fixedly connected to the two ends of the cross rod, and kidney-shaped holes are formed in the end rods; the interlock device further comprises a lock body assembly and an interlock box; the lock body assembly fixed on the cabinet body comprises bolt holes, a spring bolt and a key hole for accommodating a safety interlock key; the interlock box comprises a limiting pin, unlocking bolts and a spring bolt cavity used for containing the spring bolt; when the interlock box is installed on the lock body assembly through a fastener, the limiting pin is inserted into the corresponding kidney-shaped hole of the end rod; when the safety interlock key rotates to a first position, the spring bolt extends into the spring bolt cavity; and when the safety interlock key rotates to a second position, the spring bolt retreats from the spring bolt cavity, and the interlock box can be detached from the lock body assembly by detaching the fastener. According to the interlock device, the functions of safety interlocking and secondary anti-falling of a cabinet door can be realized through a mechanical structure, and meanwhile, the good waterproof and dustproof protection functions for a lock body are achieved.

Description

technical field [0001] The invention relates to an interlocking device, in particular to an interlocking device for an equipment cabinet under a rail transit vehicle. Background technique [0002] The high-voltage and high-current electrical equipment of rail transit vehicles are often arranged in the equipment box under the vehicle. In order to ensure the safety of electrical equipment maintenance in the equipment cabinet and the accidental falling off of the cabinet door during operation, it is necessary to set up a safety interlock device and a secondary prevention. Take off the device. [0003] The safety interlock device is set, that is, the safety interlock key can only be obtained when there is no electricity in the equipment cabinet, and then the equipment cabinet is opened for inspection and maintenance, so as to avoid the danger caused by the maintenance personnel due to live work; when the equipment cabinet is overhauled, Only after the cabinet door is locked can...

AI Technical Summary

Problems solved by technology

In previous projects, an anti-drop rope was often installed between the cabinet door and the cabinet body. The disadvantage of this solution is that the anti-drop rope of each cabinet door needs to be removed when opening the cabinet door. The process is cumbersome and easy to lose.

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