CN218996555U

CN218996555U - Ring main unit cabinet door interlocking device and ring main unit

Info

Publication number: CN218996555U
Application number: CN202223527942.4U
Authority: CN
Inventors: 赵中利; 戴守祥; 谢伟; 秦明辉
Original assignee: CSG Smart Electrical Technology Co Ltd; CSG Smart Science and Technology Co Ltd
Current assignee: CSG Smart Electrical Technology Co Ltd; CSG Smart Science and Technology Co Ltd
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-05-09
Anticipated expiration: 2032-12-23

Abstract

The utility model provides a ring main unit cabinet door interlocking device, which comprises an operation shaft, a cabinet door, a supporting plate, a driving piece arranged on the operation shaft, and an interlocking plate capable of vertically displacing along the supporting plate under the driving of the driving piece, wherein the operation shaft can realize the opening or closing of the cabinet door through a buckling piece arranged at the bottom end of the interlocking plate when the operation shaft is in closing or opening action, the cabinet door is closed when a grounding switch is closed, the driving piece releases the limit on the interlocking plate, at the moment, the interlocking plate is clamped with the cabinet door, the cabinet door can drive the interlocking plate to move downwards along the supporting plate, the cabinet door stops after being closed in place, and when the grounding switch is opened, the driving piece on the operation shaft presses down the interlocking plate, the cabinet door cannot move up and down due to the fact that the interlocking plate is clamped with the cabinet door, and can not be opened due to the fact that the interlocking plate is clamped together, and only the grounding switch is closed, the driving piece moves away from the interlocking plate, and the cabinet door can move upwards to be opened.

Description

Ring main unit cabinet door interlocking device and ring main unit

Technical Field

The utility model relates to the technical field of ring main units of electric power systems, in particular to a ring main unit cabinet door interlocking device and a ring main unit.

Background

In the technical field of high-voltage switches of power systems, a ring main unit is used as a complete equipment of the power distribution high-voltage switch, a main switch is mainly provided with a breaker, an isolating switch and a grounding switch, the positions of the main switch and the breaker are different, the upper isolating upper grounding scheme and the lower isolating lower grounding scheme are different, in the lower isolating lower grounding scheme, for guaranteeing the safety of the high-voltage switch equipment and personnel operation, the ring main unit is required to be provided with a five-prevention interlocking device, misoperation of the switch is prevented, the electrified interval is prevented from being wrongly accessed, the electrified part of the equipment cannot be touched during high-voltage electrification, the cabinet door can be opened after the grounding switch is closed by the grounding scheme under the ring main unit, and the cabinet door cannot be opened after the grounding switch is opened.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a ring main unit door interlocking device which can provide safety guarantee for ring main unit operators and prevent operators from entering an electrified interval by mistake and can not touch an electrified part of equipment in high-voltage electrification, and a ring main unit comprising the interlocking device, and the specific technical scheme is as follows:

the utility model provides a looped netowrk cabinet door interlock, includes operating shaft and cabinet door, still includes the backup pad, sets up at the epaxial driving piece of operating and can follow the interlocking plate of backup pad vertical displacement under the driving piece drive, wherein, the operating shaft realizes opening or closing of cabinet door through the fastener that the interlocking plate bottom set up when closing or separating brake action.

Preferably, the driving member is a cam sleeved on the operation shaft.

Preferably, the backup pad is set firmly inside the looped netowrk cabinet body.

Preferably, the support plate comprises a horizontal part arranged inside the cabinet body and a vertical part vertically fixed at the tail end of the horizontal part.

Preferably, the interlocking plate comprises a lower interlocking plate capable of vertically displacing along the vertical part and an upper interlocking plate fixedly arranged at the top of the lower interlocking plate and capable of vertically displacing under the driving of the driving piece.

Preferably, the buckling piece comprises a buckling block arranged at the bottom end of the lower interlocking plate and a buckling groove arranged at one side of the cabinet door close to the lower interlocking plate.

The ring main unit is provided with the cabinet door interlocking device.

According to the technical scheme, the utility model has the following beneficial effects: when the grounding switch is used, the cabinet door is closed when the grounding switch is closed, the driving piece releases the limit on the interlocking plate, at the moment, the interlocking plate is clamped with the cabinet door, the cabinet door can drive the interlocking plate to move downwards along the supporting plate, the cabinet door is closed in place and then stops, when the grounding switch is opened, the driving piece on the operating shaft presses down the interlocking plate, the cabinet door cannot move up and down due to the fact that the interlocking plate is clamped with the cabinet door, the cabinet door cannot be opened due to locking, only after the grounding switch is closed, the driving piece moves away from the interlocking plate, and the cabinet door can move upwards to be opened, so that the relationship between closing and opening of the grounding switch and opening of the cabinet door is established, operators are prevented from entering electrified isolation by mistake, and safety of operators is guaranteed.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

fig. 2 is a side view of fig. 1.

In the figure: 10. an operation shaft; 20. a cabinet door; 30. a support plate; 310. a horizontal portion; 320. a vertical portion; 40. a driving member; 50. interlocking the plate members; 510. a lower interlocking plate; 520. and (5) an upper interlocking plate.

Detailed Description

The present utility model will be described in detail below with reference to the drawings and detailed embodiments, and before the technical solutions of the embodiments of the present utility model are described in detail, the terms and terms involved will be explained, and in the present specification, the components with the same names or the same reference numerals represent similar or identical structures, and are only limited for illustrative purposes.

Referring to fig. 1 and 2, a ring main unit door interlocking device includes an operation shaft 10 and a cabinet door 20, and it needs to be described that the operation shaft 10 is connected with a grounding switch, that is, the grounding switch realizes rotation of the operation shaft 10 when the grounding switch is switched on or off, the device also includes a support plate 30, a driving member 40 disposed on the operation shaft 10, and an interlocking plate 50, the operation shaft 10 drives the driving member 40 to act when the operation shaft is switched on or off, so as to drive the interlocking plate 50 to vertically displace, when the grounding switch is switched on, the cabinet door 20 is closed, the driving member 40 releases the restriction on the interlocking plate 50, at this time, the interlocking plate 50 is clamped with the cabinet door 20, the cabinet door 20 can drive the interlocking plate 50 to move downwards along the support plate 30, and stop after the cabinet door 20 is closed in place, when the grounding switch is switched off, the driving member 40 on the operation shaft 10 presses the interlocking plate 50, and the cabinet door cannot move up and down, and only after the cabinet door is switched on, the grounding switch is switched on, the driving member 40 plate 50, and the cabinet door 20 can move upwards, so that the device can move upwards to open when the grounding switch is switched off, and the grounding switch is opened, thereby guaranteeing that the connection and the safety personnel is prevented from entering into the safety switch.

As a preferred embodiment of the present utility model, the driving member 40 is a cam sleeved on the operating shaft 10, so that when the operating shaft 10 rotates, the cam is driven to rotate, and when the cam rotates, the cam drives the interlocking plate 50 through the distal end portion thereof, so as to drive the interlocking plate 50 to move vertically along the supporting plate 20.

Further, the supporting plate 30 is fixedly arranged in the ring main unit body, and the supporting plate 30 comprises a horizontal portion 310 arranged in the ring main unit body and a vertical portion 320 vertically and fixedly arranged at the tail end of the horizontal portion 310, so that the horizontal portion 310 serves as a portion connected with the ring main unit, the vertical portion 320 serves as a portion for moving the interlocking plate 50, the interlocking plate 50 can vertically move along the vertical portion 320 under the driving of the driving piece, and the moving stability of the interlocking plate 50 can be improved.

As a preferred embodiment of the present utility model, the interlocking plate 50 includes a lower interlocking plate 510 and an upper interlocking plate 520, the lower interlocking plate 510 is attached to the vertical portion 320 of the support plate 30 and can vertically displace along the vertical portion 320, it should be noted that, in order to achieve better movement of the lower interlocking plate 510 along the vertical portion 320, a sliding rail and a sliding block that are mutually matched may be provided at a portion where the lower interlocking plate 510 is connected with the vertical portion 320, so that stability of movement of the interlocking plate 50 along the support plate 30 may be improved, and in addition, the upper interlocking plate 520 is fixedly provided at the top of the lower interlocking plate 510, and the upper interlocking plate 520 may vertically displace under the driving of the driving member.

It should be noted that, in the process of moving upward with the cabinet door 20, the upper interlocking plate 520 may move to block the grounding switch operating shaft 10, so that the grounding switch cannot be operated, so as to achieve the purpose of protecting the operator when the cabinet door 20 is opened.

Further, in order to improve the stability of the locking of the interlocking plate 50 and the cabinet door 20, the buckling piece includes a buckling block disposed at the bottom end of the lower interlocking plate 510 and a buckling groove disposed at one side of the cabinet door 20 close to the lower interlocking plate 510, when the operation shaft 10 is closed, the buckling block and the buckling groove are buckled together, so that the cabinet door 20 and the lower interlocking plate 510 are clamped together, the cabinet door 20 at this time can drive the lower interlocking plate 510 to move downwards along the vertical portion 320, the cabinet door stops after being in place, after the grounding switch is closed, the driving piece moves away from the lower pressing of the upper interlocking plate 520, the buckling block is separated from the buckling groove, and the cabinet door 20 at this time can move upwards and then be opened.

The above-described embodiments are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.

Claims

1. The utility model provides a looped netowrk cabinet door interlock, includes operating shaft (10) and cabinet door (20), its characterized in that still includes backup pad (30), sets up driving piece (40) on operating shaft (10) and can follow backup pad (30) vertical displacement's interlocking plate (50) under driving piece (40) drive, wherein, operating shaft (10) realize opening or closing of cabinet door (20) through the fastener that sets up in interlocking plate (50) bottom when closing or separating brake action.

2. The ring main unit door interlocking device according to claim 1, wherein the driving member (40) is a cam sleeved on the operation shaft (10).

3. The ring main unit door interlocking device according to claim 1 or 2, wherein the supporting plate (30) is fixedly arranged inside the ring main unit body.

4. A ring main unit door interlock according to claim 3, wherein the support plate (30) comprises a horizontal portion (310) disposed inside the main unit body and a vertical portion (320) vertically fixed at the end of the horizontal portion (310).

5. The ring main unit door interlock of claim 4 wherein the interlock plate (50) comprises a lower interlock plate (510) capable of being vertically displaced along the vertical portion (320) and an upper interlock plate (520) fixedly disposed on top of the lower interlock plate (510) and capable of being vertically displaced under the drive of the driver.

6. The ring main unit door interlocking device according to claim 5, wherein the buckling piece comprises a buckling block arranged at the bottom end of the lower interlocking plate (510) and a buckling groove arranged at one side of the cabinet door (20) close to the lower interlocking plate (510).

7. A ring main unit, characterized in that the ring main unit is provided with a ring main unit door interlock according to any of claims 1-6.