CN2572529Y

CN2572529Y - Two-door mechanial interlock device for switch equipment

Info

Publication number: CN2572529Y
Application number: CN 02257472
Authority: CN
Inventors: 朱丽霞; 崔凯; 李华政
Original assignee: BEIJING BEIKAI ELECTRICAL Co Ltd
Current assignee: BEIJING BEIKAI ELECTRICAL Co Ltd
Priority date: 2002-09-26
Filing date: 2002-09-26
Publication date: 2003-09-10
Anticipated expiration: 2012-09-26

Abstract

The utility model relates to a two-door mechanical interlock device for switch equipment. The utility model belongs to a mechanical interlock mechanism, and is mainly used for the power switch equipment having an upper and a lower doors that must be opened and closed according to definite sequence. When the two doors are both in a close state, a pushing guard sheet (10) fixed on a lower door (8) of the equipment is blocked by an inserted sheet (9) arranged at the lower end of an interlock rod (4), and the lower door (8) can not be opened. When the two doors are both in an open state, an upper door can not be closed by the interlock rod (4) which is bounced and is blocked by a reset guard sheet (11). Only when the lower door (8) is closed at first, and the reset guard sheet (11) is pushed off by the pushing guard sheet (10), the interlock rod (4) can be moved downwards, and the upper door (2) can be closed. Thus when the lower door (8) is in the open state, the equipment electric appliance arranged in the lower door can be ensured not to be held with electricity.

Description

Switchgear two mechanical door interlocks

(1) technical field:

The utility model belongs to mechanical interlock mechanism, is mainly used in two mechanical interlockings that prevent the misoperation of keying order with the power switchgear of going up the Xiamen.

(2) background technology:

The fixed metal enclosed beginning equipment of the newly-designed a kind of armouring of the applicant has three doors that are arranged above and below, except that the Men Yinmennei of topmost mainly is an instrument and can not being subjected to sequence limit ground opens, two other be the application alleged to the doorstep and the Xiamen must open and close in proper order in accordance with regulations.That is to say, must open earlier during overhaul of the equipments to the doorstep and open the Xiamen again, overhauled when putting into operation and must close again to the doorstep the Xian Guan Xiamen.Reason is when closing to the doorstep, and equipment is under the control of an other cover interlocking device and be in "on" position, and the cable in this moment Xiamen, isolating switch etc. are all charged; When opening to the doorstep, equipment overlaps other one and is in gate-dividing state under interlocking device's control, and the cable in the Xiamen, isolating switch etc. are all not charged at this moment.Be support equipment and personal safety, the unlatching of Xiamen must guarantee that its inner electrical equipment is not charged, so the sequence requirement of above-mentioned two keyings is arranged.

Belong to new product owing to this with the switchgear of going up the Xiamen, so need design to meet the two brand-new mechanical door interlocks of above-mentioned requirements.

(3) utility model content:

The purpose of the utility model design is the unlatching safety operation order that guarantees with two of the switchgears of going up the Xiamen, prevents that device interior electrical equipment from exposing outside under electriferous state, guarantees the person and device security.

Switchgear two mechanical door interlocks that the utility model provides, its functional part is the same with general mechanical interlocks, also by appliance stand, block piece, stop and remove part and elastic reset spare is formed that different is to have carried out the design of following brand-new parts morpheme:

A, up and down the upper bracket in hole and the lower carriage that is fixed on switchgear frame bottom are appliance stand to be fixed on switchgear frame top and band;

B, with pass above-mentioned upper bracket up and down hole and blocking lever moving up and down, be fixed on this blocking lever lower end inserted sheet, can be inserted and be fixed on push and block sheet on the Xiamen by this inserted sheet, be hinged on above-mentioned lower carriage bottom and can be by the push-jump catch that resets of above-mentioned push and block sheet by jointed shaft, and the gag lever post that is fixed on above-mentioned lower carriage top and can blocks the above-mentioned catch that resets is a block piece;

C, be fixed on to the doorstep go up and can promote the push jack that above-mentioned blocking lever moves down and have simultaneously stop with the aforementioned push and block sheet of removing barrier effect for stopping the releasing part:;

D, be elastic reset spare with stage clip that is enclosed within above-mentioned blocking lever stage casing and the torsion spring that is enclosed within on the above-mentioned jointed shaft.

For the ease of making, install and guarantee to realize two interlocks that open and close in order, it is horizontal flat U-shaped that described upper bracket can be made side-looking, described lower carriage can be made side-looking for anti-L shaped or two anti-L shaped, the front view made of described push and block sheet be U-shaped and with screw on the Xiamen, the described catch that resets can be made upper lateral part band one and the corresponding breach of described gag lever post.

The utility model has the advantages that: owing to done as above brand-new design, when this device just can assurance equipment be closed (combined floodgate) to the doorstep do not open and call when the not closing operation sequence of safety of Guan Bushang (can not close a floodgate) of Xiamen in the Xiamen, thereby it is exposed to guarantee that electrical equipment in the Xiamen only just can open door when not charged, avoids the generation of the person and equipment breakdown.And, since described push and block sheet to make front view be U-shaped, and with screw on described Xiamen, can by from the outside unload screw Xiamen release be opened just in case break down to the doorstep when opening with regard to making.

(4) description of drawings:

The front view of switchgear two mechanical door interlocks that Fig. 1 provides for the utility model;

The end view of switchgear two mechanical door interlocks that Fig. 2 provides for the utility model.

Each parts of Fig. 1 are: switchgear frame (1), call (2), push jack (3), blocking lever (4), upper bracket (5), stage clip backing pin (6), stage clip (7), Xiamen (8), inserted sheet (9), push and block sheet (10), the catch that resets (11), gag lever post (12), jointed shaft (13), lower carriage (14).

Each parts of Fig. 2 are: switchgear frame (1), push jack (3) (removed be attached thereto to the doorstep 2), blocking lever (4), upper bracket (5), stage clip backing pin (6), stage clip (7), inserted sheet (9), push and block sheet (10) (having removed the Xiamen 8 that is attached thereto), the catch that resets (11), gag lever post (12), jointed shaft (13), lower carriage (14), torsion spring (15).

As seen from Figure 1, push and block sheet (10) is a U-shaped, its left side with screw on Xiamen (8).Catch (11) upper lateral part band one and the corresponding breach of gag lever post (12) reset.

As seen from Figure 2, upper bracket (5) is horizontal flat U-shaped (push jack 3 also is horizontal flat U-shaped), and lower carriage (14) is anti-L shaped (when being weldingly fixed on the equipment frame) or two anti-L shaped (when welding or being screwed on equipment frame).

(5) embodiment:

Above-mentioned Fig. 1, Fig. 2 are the diagram of embodiment of the present utility model (embodiment).Below in conjunction with description of drawings existing apparatus and each parts relationship of the utility model generator and course of action:

Fig. 1 and Fig. 2 are closing state of two doors of equipment.By two figure as can be seen, the push and block sheet 10 that is fixed on the Xiamen 8 is blocked by the inserted sheet 9 of blocking lever 4 lower ends, and the Xiamen of closing can not be opened when equipment is closed to the doorstep.When two of equipment all are in opening-wide state, because to the doorstep the push jack 3 on 2 leaves blocking lever 4, blocking lever 4 just pops up under the effect of stage clip 7, simultaneously because the push and block sheet 10 on the Xiamen 8 leaves the catch 11 that resets, the catch 11 that resets just rotates counterclockwise and leans against on the gag lever post 12 under torsion spring 15 effects, and blocking lever 4 can not be moved down.At this moment if close to the doorstep 2, be fixed on to the doorstep push jack 3 on 2 so and just blocked and make and 2 can not close to the doorstep by blocking lever 4; Push and block sheet 10 catch 11 that will reset is pushed open and is clockwise rotated when having only Xiamen 8 to shut earlier, and blocking lever 4 could move down under push jack 3 promotes, and 2 just can shut to the doorstep.

The utility model has produced sample and through test and on probation, has shown it is fully reliably.

Claims

1, switchgear two mechanical door interlocks by appliance stand, block piece, stop and remove part and elastic reset spare is formed, is characterized in that:

A, described appliance stand for be fixed on switchgear frame (1) top and band up and down the hole upper bracket (5) and be fixed on the lower carriage (14) of switchgear frame (1) bottom;

B, described block piece for pass upper bracket (5) up and down hole and blocking lever moving up and down (4), be fixed on blocking lever (4) lower end inserted sheet (9), can be inserted and be fixed on push and block sheet (10) on the Xiamen (8), be hinged on lower carriage (14) bottom and can be pushed the push-jump catch that resets (11) of catch (10) and be fixed on lower carriage (14) top and can block the gag lever post (12) of the catch that resets (11) by inserted sheet (9) with jointed shaft (13);

C, describedly stop that removing part goes up and can promote the push jack (3) that blocking lever (4) moves down and have the above-mentioned push and block sheet (10) that stops and stop the releasing effect simultaneously for being fixed on (2) to the doorstep;

D, described elastic reset spare are for being enclosed within the stage clip (7) in blocking lever (4) stage casing and being enclosed within torsion spring (15) on the jointed shaft (13).

2, switchgear two mechanical door interlocks according to claim 1, it is characterized in that described upper bracket (5) side-looking is horizontal flat U-shaped, described lower carriage (14) side-looking is anti-L shaped or two anti-L shaped, the front view of described push and block sheet (10) be U-shaped and with screw on Xiamen (8), the described catch that resets (11) upper lateral part band one and the corresponding breach of gag lever post (12).