CN202352559U

CN202352559U - Novel interlocking device for interlocking grounding switch and high-voltage cabinet back door

Info

Publication number: CN202352559U
Application number: CN2011204547141U
Authority: CN
Inventors: 李鹏
Original assignee: Xian Electric Manufacturing Corp
Current assignee: China Xidian Group Limited
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2012-07-25
Anticipated expiration: 2021-11-16

Abstract

The utility model discloses a novel interlocking device for interlocking a grounding switch and a high-voltage cabinet back door. The device comprises a lock nut fixed on a cabinet door, and a fixed plate, a cylinder, a spring and a grounding switch operation shaft which are fixed on a cabinet body, wherein the front end of the cylinder is provided with a bolt, and the back end of the cylinder is provided with a limit block; an accommodating hole is formed on the cylinder; a first limit hole communicating with the accommodating hole is formed on the side wall of the cylinder; a through hole through which the cylinder passes, a communicating through hole and a second limit hole which is matched with the limit block are formed on the fixed plate; the grounding switch operation shaft comprises a first shaft at a front end and a second shaft at a back end; the diameter of the second shaft is greater than those of the first shaft and the accommodating hole; the front end of the first shaft is provided with a limit bulge; the first shaft is mounted in the accommodating hole; the limit bulge of the first shaft is clamped in the second limit hole; and the spring is accommodated in the accommodating hole and positioned between the cylinder and the grounding switch operation shaft. According to the novel interlocking device, safety performance of products is improved on the basis that the grounding switch and the switch cabinet back door are interlocked.

Description

The interlock of a kind of novel grounded switch and the mutual locking in high-voltage board back door

Technical field

The utility model belongs to the high-voltage electrical equipment technical field, relates to the interlock of a kind of earthed switch and the mutual locking in high-voltage board back door.

Background technology

Traditional switch cubicle back door interlocking device is with the earthed switch operating axis locking to be carried out at the back door, and promptly under earthed switch was in gate-dividing state, the back door can't be opened, to satisfy in " five is anti-" interlocking the requirement for " preventing mistakenly entering charged chamber ".But traditional earthed switch, after opened at the back door, earthed switch still was in operable state, if this mistiming tap ground switch will cause potential safety hazard.

The utility model content

The purpose of the utility model is to provide the interlock of a kind of novel grounded switch and the mutual locking in high-voltage board back door, has realized the mutual locking at earthed switch and switch cubicle back door, has improved the safety of products performance.

To achieve these goals, the utility model adopts following technical scheme:

The interlock of a kind of novel grounded switch and the mutual locking in high-voltage board back door is characterized in that, comprises the locknut that is fixed on the cabinet door, is fixed on fixed head, tapered end, spring earthed switch operating axis on the cabinet;

Locknut is provided with mounting hole and the host cavity that is communicated with mounting hole;

The front end of tapered end is provided with dead bolt, and the rear end is provided with guide vane end stop; Tapered end is provided with accepting hole, and the sidewall of tapered end is provided with first spacing hole that is communicated with accepting hole;

Said fixed head is provided with the through hole that supplies tapered end to pass, second spacing hole that is communicated with through hole and matches with guide vane end stop;

The earthed switch operating axis comprises first and second of rear end of front end, and second diameter is greater than first diameter with accepting hole; First front end is provided with spacing preiection;

First is installed in the accepting hole, and first spacing preiection is stuck in second spacing hole; Spring is contained in the accepting hole and between tapered end and earthed switch operating axis.

When door opening state, the tapered end inner spring is in extended configuration, and the guide vane end stop on the tapered end inserts in second spacing hole on the fixed head.

When closing the door state, the dead bolt on the tapered end stretches in the mounting hole of locknut, and the guide vane end stop on the tapered end withdraws from second spacing hole on the fixed head.

Behind the earthed switch separating brake, the dead bolt of tapered end is stuck in the host cavity of locknut, can not from mounting hole, deviate from.

With respect to prior art, the utlity model has following advantage:

1, function realizes: new interlocking device can be grounded the mutual locking at switch and back door, reliable in structure, flexible operation fully;

2, good looking appearance, delicate structure: new interlocking machine has simple and exquisite profile, can well arrange in pairs or groups with operating axis, installs firmly;

3, reduce having the change of element now: new interlocking device all improves on existing mechanism basis, keeps the mounting means in the existing cabinet, cabinet itself is changed, and is easy to popularization;

4, economical and practical: new interlocking device can not increase too much new parts, does not use complicated technology and expensive material, on the basis that promotes the product technology level, does not increase too much Financial cost, really realizes the lifting of value of the product.

Description of drawings

Fig. 1 is the exploded perspective view of the utility model interlock;

Fig. 2 is the structural representation under the door opening state;

Fig. 3 is the structural representation under the state of closing the door;

Fig. 4 is the structural representation under the state of locking a door.

Embodiment

Specify the technical scheme of the utility model below in conjunction with accompanying drawing.

See also Fig. 1 to shown in Figure 4, the interlock of a kind of novel grounded switch of the utility model and the mutual locking in high-voltage board back door comprises locknut 1, tapered end 2, spring 3, fixed head 4 and earthed switch operating axis 5.Locknut 1 is fixed on the switch cubicle back door, and locknut 1 is provided with mounting hole 12 and host cavity 11.The front end of tapered end 2 is provided with dead bolt 22, and the rear end of tapered end 2 is provided with guide vane end stop 21, and tapered end 2 is provided with accepting hole 20, and the sidewall of tapered end 2 is provided with the spacing hole 23 that is communicated with accepting hole 20.Earthed switch operating axis 5 comprises that first 51 of front end second 52, the second 52 diameter with the rear end is greater than first 51 diameter with accepting hole 20; First 51 front end is provided with spacing preiection 50.Spring 3 is contained in the accepting hole 20, and first 51 part is installed in the accepting hole 20, and first 51 spacing preiection 50 is stuck in the spacing hole 23.Fixed head 4 is provided with a through hole that can supply tapered end 2 to pass, and also is provided with the spacing hole that is communicated with through hole and cooperates with the guide vane end stop 21 of tapered end 2 on the fixed head 4.

As shown in Figure 2; In door opening state; Tapered end 2 inner springs 3 are in extended configuration, and tapered end 2 stretches out behind cabinet, in the spacing hole 41 that the guide vane end stop 21 on the tapered end 2 inserts on the fixed head 4; Make whole tapered end 2 can't rotate, thereby realized under the open mode of back door, can't carrying out sub-switching operation earthed switch with earthed switch operating axis 5.

As shown in Figure 3; At the state of closing the door, to tapered end 2, the dead bolt 22 on the tapered end 2 stretches in the mounting hole 12 of locknut 1 locknut 1 with the close pressure at switch cubicle back door; Tapered end 2 is withdrawn in cabinet; Guide vane end stop 21 on the tapered end 2 withdraws from the spacing hole 41 on the fixed head 4 thereupon, and this moment, operating axis 5 was in operable state, and earthed switch can carry out sub-switching operation.

As shown in Figure 4, after the earthed switch separating brake, tapered end 2 rotates 90 ° with earthed switch operating axis 5; This moment, dead bolt 22 was stuck in the host cavity 11 of locknut 1; And can not from mounting hole 12, deviate from, promptly pin locknut 1, the back door can't be opened; Thereby realized under the earthed switch gate-dividing state, can't opening the switch cubicle back door, prevented the function of mistakenly entering charged chamber.

Claims

1. the interlock of novel grounded switch and the mutual locking in high-voltage board back door is characterized in that, comprises the locknut (1) that is fixed on the cabinet door, is fixed on fixed head (4), tapered end (2), spring (3) earthed switch operating axis (5) on the cabinet;

Locknut (1) is provided with mounting hole (12) and is communicated with the host cavity (11) of mounting hole (12);

The front end of tapered end (2) is provided with dead bolt (22), and the rear end is provided with guide vane end stop (21); Tapered end (2) is provided with accepting hole (20), and the sidewall of tapered end (2) is provided with first spacing hole (23) that is communicated with accepting hole (20);

Said fixed head (4) is provided with the through hole that supplies tapered end (2) to pass, second spacing hole (41) that is communicated with through hole and matches with guide vane end stop (21);

Earthed switch operating axis (5) comprises first (51) of front end and second (52) of rear end, and the diameter of second (52) is greater than the diameter of first (51) and accepting hole (20); The front end of first (51) is provided with spacing preiection (50);

First (51) are installed in the accepting hole (20), and the spacing preiection of first (51) (50) is stuck in second spacing hole (23); Spring (3) be contained in the accepting hole (20) and be positioned at tapered end (2) and earthed switch operating axis (5) between.

2. the interlock of a kind of novel grounded switch according to claim 1 and the mutual locking in high-voltage board back door; It is characterized in that; When door opening state, tapered end (2) inner spring (3) is in extended configuration, and the guide vane end stop (21) on the tapered end (2) inserts in second spacing hole (41) on the fixed head (4).

3. the interlock of a kind of novel grounded switch according to claim 1 and the mutual locking in high-voltage board back door; It is characterized in that; When closing the door state; Dead bolt (22) on the tapered end (2) stretches in the mounting hole (12) of locknut (1), and the guide vane end stop (21) on the tapered end (2) withdraws from second spacing hole (41) on the fixed head (4).

4. the interlock of a kind of novel grounded switch according to claim 1 and the mutual locking in high-voltage board back door; It is characterized in that; Behind the earthed switch separating brake, the dead bolt (22) of tapered end (2) is stuck in the host cavity (11) of locknut (1), can not from mounting hole (12), deviate from.