CN205881737U - Produce gas formula load switch cabinet interlock - Google Patents

Abstract

The utility model discloses a produce gas formula load switch cabinet interlock, including hollow lock tube, handle and cover that the lock tube is built -in to be equipped with the loose axle, be connected with the loose axle are established at the spring on hand, the handle has one to be exposed in the stub end of lock tube front end, the afterbody of loose axle stretches out the rear end of lock tube and inserts the separating brake position of load switch aluminium wheel downtheholely, the lock tube top is connected with the bent plate through the nut, be connected with the bolt on the bent plate, the bolt inserts the lock tube perpendicularly and fixes the loose axle in the lock tube. The utility model discloses when locking switch cabinet doors, the locking plate board that bends after the meeting makes the bent plate drive the bolt and shifts up, pulls out the handle this moment and makes the operating axis break away from the separating brake position hole of load switch aluminium wheel, can operate aluminium wheel upwards (being that load switch closes a floodgate), and after load switch closed a floodgate, the bolt can not get into the loose axle, and messenger's cabinet door can't be opened, has satisfied the interlocking requirement, prevents that maloperation nature is strong, safe and reliable.

Description

A kind of air-generating interlocking device for load switch cabinet

Technical field

This utility model relates to switch cabinet equipment technical field, more specifically, particularly relates to a kind of air-generating load and opens Close cabinet interlock.

Background technology

At present, on-load switch is widely used, be primarily due to protection transformator in use on-load switch- The combined electrical apparatus ratio of fuse is with breaker protection more effectively: one be this version simple in construction and cost low, two are This form protection feature is good.When inside transformer breaks down, for making fuel tank not explode, it is necessary in 20ms internal cutting off short circuit Fault, limiting fuse can excise fault in 10ms.The chopper standard-sized sheet break time, chopper was intrinsic dynamic by the relay protection time Making time and arc time synthesis, at least need 3 cycles (60ms) and above time, this cannot effectively protect transformation Device, and on-load switch-fuse can effectively be protected.

According to GB3906-91, DL/T404-1997 standard, loading switch cabinet to meet five anti-interlockings.At present, mechanical interlocking Generally having three kinds of modes: the first is to use mechanical interlocks, carrys out transmission with component of machine and produces constraint, reliability is High；The second is to use procedure lock and board turning, less reliable, because of one_to_one corresponding not absolute between procedure lock and key, behaviour Bother, need para-position；The third is to use charged display device to control electromagnetic lock to realize locking, when major loop has electricity, Jing Guo electricity Hold voltage divider principle output low voltage voltage signal, light neon lamp, send lifting with light signal, utilize simultaneously and take out pressure signal control electricity Son switch coordinates electromagnetic lock to perform mandatory locking, but reliability is the most weaker, because electromagnetic lock, neon bulb, wire have damage Possibility, and be also required to power supply and power (must separate with mechanical and electrical protection loop).

Utility model content

The purpose of this utility model is for above-mentioned the deficiencies in the prior art, it is provided that a kind of simple in construction, safe and reliable, Can fool proof air-generating interlocking device for load switch cabinet.

For achieving the above object, the technical solution adopted in the utility model is: a kind of air-generating loading switch cabinet interlocking dress Put, including hollow lock tube, in described lock tube, be equiped with the handle that movable axis is connected with movable axis and the bullet being set on handle Spring, described handle has a stub end exposing to lock tube front end, and the afterbody of described movable axis stretches out the rear end of lock tube and inserts In the open position hole of on-load switch aluminum wheel；Described lock tube top is connected by nut bent plate, and on described bent plate, connection has slotting Pin, described latch is inserted perpendicularly into lock tube and is fixed in lock tube by movable axis.

This utility model simple in construction, while locking door of switch cabinet, locking plate can bend down plate, makes bent plate drive and inserts Moving on pin, now pull out handle and make operation axle depart from the open position hole of on-load switch aluminum wheel, the most operable aluminum is taken turns upwards (i.e. on-load switch combined floodgate), after on-load switch closes a floodgate, the upper insertable hole of non-activity axle of aluminum wheel, now latch can not enter work Moving axis, makes cabinet door to open, meets interlock requirement, and anti-misoperation is strong, safe and reliable.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

In figure: 1-lock tube；2-movable axis；3-handle；4-spring；5-bent plate；6-nut；7-latch；8-aluminum Wheel.

Detailed description of the invention

The utility model is described in further detail for embodiment in below in conjunction with the accompanying drawings, but is not intended that this reality With novel any restriction.

As it is shown in figure 1, a kind of air-generating interlocking device for load switch cabinet provided by the utility model, including hollow lock tube 1, it is equiped with handle 3 and sheathed spring 4 on the handle 3 that movable axis 2 is connected with movable axis 2 in described lock tube 1, described Hands 3 has a stub end exposing to lock tube 1 front end, operates for maintainer；The afterbody of described movable axis 2 stretches out lock tube 1 Rear end and insert on-load switch aluminum wheel 8 open position hole in；Described lock tube 1 top is connected by nut 6 bent plate 5, institute Stating to connect on bent plate 5 has latch 7, described latch 7 to be inserted perpendicularly into lock tube 1 and be fixed in lock tube 1 by movable axis 2.

Locking principle of the present utility model is: by the cabinet door lock of switch cubicle, locking plate presses down the bent plate 5 of interlock, makes Bent plate 5 drives and moves on latch 7, now pulls out handle 3 and makes operation axle 2 depart from the open position hole of on-load switch aluminum wheel 8, i.e. Upwards (i.e. on-load switch combined floodgate), after on-load switch closes a floodgate, aluminum takes turns the insertable hole of non-activity axle 2 on 8 to operable aluminum wheel 8, Now latch 7 can not enter movable axis 2, makes cabinet door to open, meets interlock requirement, and anti-misoperation is strong, safe and reliable.

Claims (1)

1. an air-generating interlocking device for load switch cabinet, it is characterised in that: include hollow lock tube, in described lock tube, be equiped with work Handle that moving axis is connected with movable axis and the spring being set on handle, described handle has one and exposes to the big of lock tube front end Head end, the afterbody of described movable axis stretches out the rear end of lock tube and inserts in the open position hole that on-load switch aluminum is taken turns；Described lock tube Top is connected by nut bent plate, and described bent plate connects has latch, described latch to be inserted perpendicularly into lock tube and fixed by movable axis In lock tube.