Blocking mechanism for trolley type switch cabinet contact movable baffles

Abstract

The invention discloses a blocking mechanism for trolley type switch cabinet contact movable baffles, and aims at solving the problem of jamming in an action process of the contact movable baffles inthe prior art. The device comprises an upper movable baffle and a lower movable baffle arranged on a separation board, an electromagnetic lock arranged on a side wall, a controller arranged on the side wall, a trolley position sensor, a first motor, a second motor, a third motor, a fourth motor, a first travel sensor and a second travel sensor which are respectively connected with the controller,and a grounding shrapnel arranged on a baseboard and fitted to the trolley position sensor, wherein the electromagnetic lock is connected with the controller. According to the scheme above, the mechanism has the advantages of being simple in structure, flexible in action, safe and reliable; and the mechanism is of great practical value and promotional value in the technical field of safety protection.

Description

technical field [0001] The invention relates to the technical field of safety protection, in particular to a locking mechanism for a movable baffle plate of a contact of a trolley-type switch cabinet. Background technique [0002] A switchgear is an electrical device that controls the opening and closing of electrical circuits of various devices. The switch cabinet includes a busbar room, a switch room, and a switch. The switch room is composed of a bottom plate, a side wall and a partition. The partition is used to separate the switch room and the bus room. According to the internal structure, it can be divided into withdrawable switch cabinet and fixed switch cabinet. Among them, the withdrawable switch cabinet can be divided into drawer switch and trolley switch. When the trolley-type switch is powered off for maintenance, it is necessary to pull the trolley out to the maintenance position. The contact of the switch forms an obvious breaking point with the contacts of th...

AI Technical Summary

Problems solved by technology

For example, the Chinese patent application No. 201220702151.8 discloses an electromagnetic locking device for the contact baffle of the electric switch cabinet with a central trolley. The movable door of the contact baffle is driven to open and close by the baffle link. The plate link method, its disadvantage is that the movable baffle of the contact is slid and supported by the metal rod penetrating through the side, and the movable baffle of the contact is lifted and lowered by the baffle link, and when the trolley is pulled out, the contact baffle In actual production, it often occurs that the two sides of the movable baffle move asynchronously, which causes the movable baffle of the contact to be stuck, and the connecting rod of the baffle is easy to jam the trolley, making the switch unable to advance and retreat. It needs to dismantle many switch parts to recover, which not only delays the time of power outage and transmission, but also causes great economic losses, and its maintenance is relatively large

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