Spring type ring main unit door lock

Abstract

The invention provides a spring type ring main unit door lock. The door lock comprises a lock box, a padlock, an operating handle, a through shaft, two lock rods, two connecting rods, two lock rod limiting pieces and a spring; the lock box comprises a box body, a box cover, a lock tongue mounting block arranged in the box body and a lock tongue arranged on the lock tongue mounting block; a lock tongue passing hole matched with the lock tongue is formed in the operating handle; a through shaft passing hole is formed in the lock box; the through shaft is arranged in the through shaft passing hole of the lock box and a mounting hole formed in a cabinet door; the front and back ends of the through shaft are in pin joint with the operating handle and the two connecting rods; each of the back ends of the two connecting rods is in pin joint with one lock rod; the two lock rod limiting pieces are fixedly arranged on the back end surface of the cabinet door; each of the two ends of the spring and one end of each of the two lock rods are fixedly connected between the two lock rods; and the other end of each of the two lock rods penetrates through the corresponding lock rod limiting piece tobe matched with a lock groove formed in a cabinet body. Compared with the prior art, the door lock is simpler in structure, lower in cost and more convenient, time-saving and effort-saving to lock andunlock.

Description

technical field [0001] The invention relates to the field of matching devices for ring network cabinets in distribution networks, in particular to a spring-type ring network cabinet door lock. Background technique [0002] The ring network cabinet is one of the important equipment of the power distribution network. With the development of economy and society, more and more ring network cabinets are deployed. In order to ensure the safe operation of the ring network cabinet and avoid unnecessary safety accidents, the ring network cabinet needs to be equipped with a door lock. The door locks of 10kV and 20kV power distribution ring network cabinets that are most commonly seen in people's production and life are currently generally used as rotary ring network cabinet door locks. The set rotary handle, the hanging rod and padlock used to lock the rotary handle in the lock box, and the heaven and earth rod type lock rod matched with the cabinet body are set outside the lock box ...

AI Technical Summary

Problems solved by technology

The problem found in the actual use process is: because the ring network cabinet is generally located on the outdoor green belt or the roadside, it is easy to rust and jam. Due to the small size of the rotating lever, if the connecting piece and / or the heaven and earth rod are stuck or deformed when turning the rotating handle, it will be very laborious to turn the rotating handle and it will be very difficult to lock it, which will seriously affect the work efficiency , even when the operation and maintenance personnel rotate vigorously, the connection between the rotating handle or the connection between the connecting piece and the sky-earth pole is broken. Moreover, in the existing structure, the sky-ground pole is directly connected with the connecting piece, so that the plug-in connection between the sky-earth pole and the cabinet body The hole is prone to inaccurate alignment, causing difficulty in locking, which affects the work efficiency of operation and maintenance personnel

[0003] The publication number is CN110778232A, and the Chinese patent document titled "Push-pull ring network cabinet door lock structure" provides a push-pull ring network cabinet door lock structure, which can better solve the common rotary ring network cabinet door in the industry. There are disadvantages in the lock, but its structure is relatively complicated and the cost is relatively high. When unlocking, it is necessary to overcome the elastic force of two curved steel wire tubes to drive the two lock rods to move and unlock, which is relatively laborious.

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