CN100521022C

CN100521022C - Tripping device of load switch spring mechanism

Info

Publication number: CN100521022C
Application number: CNB2006100392893A
Authority: CN
Inventors: 陈卫国; 戴俊
Original assignee: Daqo Group Co Ltd
Current assignee: Nanjing Yi Electric Hui Chuang Mdt Infotech Ltd; Jiangsu Daqo Changjiang Electric Co Ltd; Zhenjiang Daqo Eaton Electrical Systems Co Ltd; Nanjing Daqo Electric Co Ltd
Priority date: 2006-04-04
Filing date: 2006-04-04
Publication date: 2009-07-29
Anticipated expiration: 2026-04-04
Also published as: CN101051568A

Abstract

The invention relates to tripping device of spring mechanism in load switch. The mechanism includes tripping shaft installed on fixed basal body (FBB) and tripping plate. Through jointed shaft being installed on FBB, the tripping plate can be rotated under action of spring mechanism. Cross section of the tripping rotating shaft possesses an entity part and a notch part. Characters are that a transition plate is installed on FBB; back end of the transition plate is hinge jointed to FBB; outside front end of the transition plate can be leaned against the tripping shaft; a sidestep is setup on inner side at front end of the transition plate; a baffle pin stood out of the tripping plate is installed at end of the tripping plate; the pin can be clipped on the said sidestep and leaned against surfaces perpendicular each other approximately in the sidestep. Advantages are: small tripping resistance high reliability, small abrasion, and long service life.

Description

Tripping device of load switch spring mechanism

Technical field

The invention belongs to middle and high voltage switching station, relate to a kind of tripping device of load switch spring mechanism.

Background technology

Tripping device of load switch spring mechanism is widely used in all kinds of middle and high voltage switching stations, its effect is in the switch running, when particular case occurring, for example: short circuit, overload, manual operation etc., can realize the interlock or the locking of other associated components.Existing tripping device of load switch spring mechanism is generally the structure shown in the accompanying drawing 1, it include be installed in fixed pedestal 1 ' on dropout rotating shaft 2 ' and dropout plate 3 ', the dropout plate is installed on the fixed pedestal by jointed shaft, and can under the effect of dropout spring, rotate in a certain direction, the dropout rotating shaft is positioned on the rotational trajectory of dropout plate end, simultaneously in the certain angle scope of dropout rotating shaft cross section, have breach, make the cross section of dropout rotating shaft be divided into entity part 21 ' and breach 22 ' these two parts partly.Like this, under common operating state, the dropout plate is being pressed under the effect of dropout spring on the entity part of dropout dropout rotating shaft, and the dropout plate can not rotate; When needs were threaded off, the dropout rotating shaft was rotated, and its barbed portion arrives dropout plate end, thereby can't stop the dropout plate, and the dropout plate can be rotated under the effect of dropout spring, finishes the action of threading off.This structure trip gear have following defective: 1, under the common operating state, because the pressure of dropout spring and dropout plate is born by the dropout rotating shaft fully, therefore it is bigger to take off the resistance that rotating shaft will overcome when threading off, when tripping force hour, can't rotate greatly because of frictional resistance easily, cause the failure of threading off, influenced the functional reliability of equipment; 2, owing to bigger frictional force between dropout plate and the dropout rotating shaft, make that the wearing and tearing of part are bigger, shortened the useful life of product.

Summary of the invention

Technical problem to be solved by this invention provides that a kind of resistance of threading off is little, dropout reliability height, parts depreciation are little, the tripping device of load switch spring mechanism of long service life.

Tripping device of load switch spring mechanism of the present invention includes dropout rotating shaft and the dropout plate that is installed on the fixing base, the dropout plate is installed on the fixed pedestal by jointed shaft, and can under the effect of dropout spring, rotate, the cross section of dropout rotating shaft has entity part and breach part, it is characterized in that: a rebound also is installed on fixing base, the rebound rear end is hinged on the fixing base, the rebound front end outside can lean against in the dropout rotating shaft, the inboard of rebound front end is provided with a step, the backing pin of an outstanding dropout plate is installed in dropout plate end simultaneously, this backing pin may be stuck in the above-mentioned step, and is pressed on two approximately perpendicular surfaces of step.Described backing pin can be installed in the mounting hole on the dropout plate, and can move forward and backward along mounting hole.

The present invention is owing to be provided with rebound, under the common operating state, the dropout plate is pressed in the dropout rotating shaft by rebound, the pressure that the dropout rotating shaft is born only is a less component, and the pressure of dropout rotating shaft is mainly born by transition axis, therefore, the frictional force that is overcome during dropout rotating shaft rotation is less, thereby guaranteed reliably finishing of dropout action, also reduced the wearing and tearing of part spare, prolonged the useful life of device.

Description of drawings

Fig. 1 is the trip gear structural representation of prior art;

Fig. 2 is a tripping device of load switch spring mechanism structural representation of the present invention.

Embodiment

As shown in Figure 2, dropout rotating shaft 2, dropout plate 3 and rebound 4 are installed on the fixed pedestal 1 of tripping device of load switch spring mechanism of the present invention, under the common operating state shown in the figure, the front end outside of rebound leans against on the entity part 21 of dropout rotating shaft, the backing pin 31 of dropout plate end is pressed on the step 41 of rebound front end inboard, backing pin can the mounting hole radially 32 on the dropout plate in before and after slide, can lean against reliably on two surfaces of different directions of step 41 to guarantee backing pin.

When needs are threaded off, on shown position, dropout rotating shaft 2 is rotated counterclockwise, and it is relative with the rebound 4 front ends outside that its barbed portion 22 is gone to, at this moment, the rebound front end outside has not had to stop, simultaneously its inboard backing pin 31 has an outside pressure to it, thereby rebound also is rotated counterclockwise, and throws off with dropout plate 3 ends, the dropout plate promptly is rotated counterclockwise under the effect of dropout spring, finishes the action of threading off.

Claims

1, a kind of tripping device of load switch spring mechanism, include the dropout rotating shaft (2) and the dropout plate (3) that are installed on the fixing base (1), the dropout plate is installed on the fixing base by jointed shaft, and can under the effect of dropout spring, rotate, the cross section of dropout rotating shaft has entity part (21) and breach part (22), it is characterized in that: a rebound (4) also is installed on fixing base (1), the rebound rear end is hinged on the fixing base, the rebound front end outside can lean against in the dropout rotating shaft, the inboard of rebound front end is provided with a step (41), the backing pin (31) of an outstanding dropout plate is installed in dropout plate end simultaneously, this backing pin may be stuck in the above-mentioned step (41), and is pressed on two approximately perpendicular surfaces of step.

2, tripping device of load switch spring mechanism according to claim 1 is characterized in that: described backing pin (31) is installed in the mounting hole (32) on the dropout plate, and can move forward and backward along mounting hole.