CN220065466U - Earthing switch and gas-insulated totally-enclosed combined electrical apparatus - Google Patents

Abstract

The utility model discloses a grounding switch and a gas insulation full-closed combined electrical appliance. The grounding switch comprises a shell, a support, a moving contact and a transmission structure, wherein an accommodating space is arranged in the shell; the support is arranged in the accommodating space and can move along a preset direction; the movable contact is in insulating connection with the support and can move along with the support so that the movable contact is positioned at a closing position or a separating position; the transmission structure comprises a swing arm, one end of the swing arm is rotationally connected with the shell, the other end of the swing arm is provided with a bearing, the bearing is in rolling connection with the support, and when the swing arm rotates, the support can be driven to move along a preset direction through the bearing. According to the utility model, the traditional shaft pin connecting structure is replaced by the bearing, the transmission structure is in rolling connection with the support provided with the moving contact, so that the friction between the transmission structure and the support is reduced, the problem that the GIS rapid grounding switch is stuck during opening and closing is solved, the transmission structure can smoothly and stably move, and the shaft pin is replaced by the bearing, so that the occurrence of the breaking phenomenon of the shaft pin is avoided.

Description

Earthing switch and gas-insulated totally-enclosed combined electrical apparatus

Technical Field

The utility model relates to the technical field of power engineering equipment, in particular to a grounding switch and a gas-insulated totally-enclosed combined electrical appliance.

Background

The gas-insulated fully-enclosed combined electrical apparatus GIS has been widely used in domestic power systems due to its characteristics of high reliability, good safety, short installation period, convenient maintenance, miniaturization, etc. In the prior art, a transmission structure of a GIS quick grounding switch is generally a structure that a crank arm and a moving contact connecting rod are connected through a shaft pin, and when the quick grounding switch is switched on and off, the connected shaft pin and the moving contact connecting rod are subjected to larger impact force, so that the phenomena of breakage or clamping stagnation are easy to occur.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the grounding switch which can smoothly and stably move, and the occurrence of the clamping stagnation phenomenon is avoided.

The utility model also provides a gas-insulated fully-closed combined electrical appliance.

The grounding switch comprises a shell, a support, a moving contact and a transmission structure, wherein an accommodating space is formed in the shell; the support is arranged in the accommodating space and can move along a preset direction; the movable contact is in insulating connection with the support and can move along with the support so that the movable contact is positioned at a closing position or a separating position; the transmission structure comprises a swing arm, one end of the swing arm is rotationally connected with the shell, a bearing is arranged at the other end of the swing arm, the bearing is in rolling connection with the support, and when the swing arm rotates, the support can be driven by the bearing to move along the preset direction.

The grounding switch provided by the embodiment of the utility model has at least the following beneficial effects: according to the utility model, the traditional shaft pin connecting structure is replaced by the bearing, the transmission structure is in rolling connection with the support provided with the moving contact, so that the friction between the transmission structure and the support is reduced, the problem that the GIS rapid grounding switch is stuck during opening and closing can be solved, the transmission structure of the grounding switch can smoothly and stably move, and the shaft pin is replaced by the bearing, so that the occurrence of the shaft pin fracture phenomenon is avoided.

According to some embodiments of the utility model, the swing arm has a connecting portion and two transmission arms, the two transmission arms are disposed opposite to each other and are connected to the connecting portion, the connecting portion is rotatably connected to the housing, and the bearings are disposed at ends of the two transmission arms away from the connecting portion.

According to some embodiments of the utility model, grooves are formed in two opposite side walls of the support, the bearings are arranged in the corresponding grooves, and the bearings are in rolling contact with the side walls of the grooves.

According to some embodiments of the utility model, the transmission structure further comprises a rotating shaft, the rotating shaft is rotatably arranged in the shell, one end of the rotating shaft is located in the accommodating space, the other end of the rotating shaft extends out of the accommodating space, and one end of the swing arm is connected with the rotating shaft, so that the swing arm can rotate along with the rotating shaft.

According to some embodiments of the utility model, the support is provided with an insulating member, the moving contact is fixedly connected with the insulating member, and the support is fixedly connected with the insulating member.

According to some embodiments of the utility model, a guide member is disposed in the housing, the insulating member is disposed through the guide member, and the insulating member can move along an axial direction of the guide member when the swing arm rotates.

According to some embodiments of the utility model, the housing is provided with a grounding post, and the grounding post is electrically connected with the moving contact.

According to some embodiments of the utility model, a copper sheet is arranged in the accommodating space, one end of the copper sheet is connected with the grounding post, and the other end of the copper sheet is connected with the moving contact.

According to some embodiments of the utility model, the housing includes a main body and a cover plate, the main body is provided with a cavity, the cover plate covers an opening of the cavity, so that the housing is formed with the accommodating space, the cover plate is provided with a through hole, and the moving contact is arranged through the through hole.

According to a second aspect of the utility model, a gas-insulated fully-enclosed switchgear comprises a grounding switch as described in any one of the above.

The gas-insulated fully-enclosed combined electrical apparatus provided by the embodiment of the utility model has at least the following beneficial effects: the utility model uses the bearing to replace the traditional shaft pin connecting structure, the transmission structure is in rolling connection with the support provided with the moving contact, the friction between the transmission structure and the support is reduced, the problem that the GIS rapid grounding switch is stuck during opening and closing can be solved, the transmission structure of the grounding switch can smoothly and stably move, and the bearing is used for replacing the shaft pin, so that the occurrence of the breaking phenomenon of the shaft pin is avoided, and the safety grounding of the gas-insulated fully-closed combined electrical appliance can be effectively ensured.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a grounding switch according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;

fig. 3 is a sectional view taken along the direction B-B in fig. 1.

Reference numerals:

the casing 100, the body 110, the cover plate 120, the through hole 121, and the receiving space 130;

the support 200, the groove 210, the insulator 220, and the guide 230;

the movable contact 300, the copper sheet 310 and the grounding post 320;

the device comprises a transmission structure 400, a swing arm 410, a connecting part 411, a transmission arm 412, a bearing 420 and a rotating shaft 430.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description and simplification of the description, and does not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the utility model.

In the description of the present utility model, the description of the first and second is only for the purpose of distinguishing technical features, and should not be construed as indicating or implying relative importance or implying the number of technical features indicated or the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, the grounding switch of the embodiment of the present utility model includes a housing 100, a support 200, a moving contact 300, and a transmission structure 400.

Specifically, as shown in fig. 1, an accommodating space 130 is provided in the housing 100, the support 200 is provided in the accommodating space 130, the moving contact 300 is fixedly connected with the support 200 in an insulating manner, the support 200 can move in a predetermined direction, and the moving contact 300 can move along with the support 200, wherein the predetermined direction is an up-down direction in the drawing. When the moving contact 300 moves along with the support 200 along a predetermined direction, the moving contact 300 can be located at a closing position or a separating position. In order to move the support 200 in a predetermined direction and finally move the movable contact 300 in the predetermined direction, the housing 100 is provided with a transmission structure 400, the transmission structure 400 includes a swing arm 410, one end of the swing arm 410 is rotatably connected to the housing 100, the other end of the swing arm 410 is provided with a bearing 420, the bearing 420 is in rolling connection with the support 200, and when the swing arm 410 rotates, the support 200 can be driven to move in the predetermined direction through the bearing 420.

According to the utility model, the bearing 420 is used for replacing the traditional shaft pin connecting structure, the transmission structure 400 is in rolling connection with the support 200 provided with the moving contact 300, so that the friction between the transmission structure 400 and the support 200 is reduced, the problem that the GIS rapid grounding switch is stuck during opening and closing can be solved, the transmission structure 400 of the grounding switch can smoothly and stably move, and the shaft pin is replaced by the bearing 420, so that the occurrence of the shaft pin fracture phenomenon is avoided.

It should be noted that, the bearing 420 used in the present utility model may be a bolt type needle bearing, and the bolt type needle bearing has the characteristic of convenient installation. The bearing 420 used in the present utility model may also be a conventional bearing, and is not limited herein.

Referring to fig. 3, in some embodiments, the swing arm 410 has a connection portion 411 and two transmission arms 412, and the two transmission arms 412 are disposed opposite to each other and are connected to the connection portion 411, and in this embodiment, the two transmission arms 412 and the connection portion 411 adopt an integrated structure, which is convenient to process. The connecting part 411 is rotatably connected with the shell 100, bearings 420 are arranged at one ends of the two transmission arms 412 away from the connecting part 411, the two transmission arms 412 are positioned at two sides of the support 200, and the bearings 420 on the transmission arms 412 are in rolling connection with the side walls of the support 200.

Referring to anecdotal 2, in some embodiments, grooves 210 are provided on opposite sidewalls of the holder 200, the grooves 210 are provided in a direction perpendicular to a predetermined direction, bearings 420 are provided in the corresponding grooves 210, and the bearings 420 are in rolling contact with the sidewalls of the grooves 210. When the swing arm 410 rotates, the bearing 420 drives the support 200 to move along a preset direction, and the structure that the bearing 420 is matched with the groove 210 on the side wall of the support 200 is adopted, so that the transmission structure 400 is convenient to be connected with the support 200 in a transmission way.

Specifically, referring to fig. 1 and 2, when the swing arm 410 swings downward, the bearing 420 abuts against the lower side wall of the groove 210, and the bearing 420 rolls along the groove 210, so as to drive the support 200 to move downward, so that the moving contact 300 moves downward and extends out of the housing 100, and the moving contact 300 is connected with the fixed contact of the electrical equipment, thereby realizing closing, and the electrical equipment is grounded.

When the switch is opened, the swing arm 410 swings upwards, the bearing 420 is abutted with the upper side wall of the groove 210, the bearing 420 rolls along the groove 210 to drive the support 200 to move upwards, the movable contact 300 moves upwards and retracts into the shell 100, and the movable contact 300 is disconnected with the fixed contact of the electrical equipment to realize the switch opening.

Referring to fig. 3, in some embodiments, the transmission structure 400 further includes a rotation shaft 430, where the rotation shaft 430 is mounted on the housing 100 through a bearing and can rotate relative to the housing 100, one end of the rotation shaft 430 is located in the accommodating space 130, the other end extends out of the accommodating space 130, one end of the swing arm 410 is provided with a mounting hole, the rotation shaft 430 is disposed through the mounting hole, so that one end of the swing arm 410 is connected with the rotation shaft 430, and when the rotation shaft 430 rotates, the rotation shaft 410 can be driven to rotate synchronously, and the other end of the rotation shaft 430 extending out of the accommodating space 130 can be provided with a handle or other structure to drive the rotation shaft 430 to rotate.

It will be appreciated that to achieve synchronous rotation of the swing arm 410 and the shaft 430, in some embodiments, the swing arm 410 is fixedly connected to the shaft 430 by a key pin, a fixing member, or the like. In some embodiments, a portion of the cross-sectional shape of the shaft 430 is configured to be a non-circular structure, the mounting hole is configured to be a non-circular structure matching the cross-sectional shape of the shaft 430, the shaft 430 is disposed through the mounting hole, and the mounting hole cooperates with the shaft 430 having a non-circular cross-sectional shape to define that the swing arm 410 can only rotate synchronously with the shaft 430 but cannot rotate relative to the shaft 430.

Referring to fig. 1 and 2, an insulating member 220 is disposed in a housing 100, a support 200 is disposed at an upper portion of the insulating member 220 and is fixedly connected with the insulating member 220, a moving contact 300 is disposed at a lower portion of the insulating member 220 and is fixedly connected with the insulating member 220, the insulating member 220 isolates the moving contact 300 from the support 200 and insulates the moving contact 300 from the support 200, and a leakage phenomenon of the grounding switch is avoided.

In some embodiments, the guide member 230 is disposed in the housing 100, the insulating member 220 is disposed through the guide member 230, and when the swing arm 410 rotates, the insulating member 220 can move along the axial direction of the guide member 230, so that the stability of the movement of the moving contact 300 during opening and closing is greatly increased, the shaking of the moving contact 300 is reduced, the whole opening and closing movement process is very stable, and the bouncing phenomenon of the moving contact 300 during opening and closing is avoided.

Specifically, referring to fig. 2, two guide members 230 are provided, two guide members 230 are disposed side by side, two mounting holes are provided on the insulating member 220, two guide members 230 are provided through the corresponding mounting holes, and the insulating member 220 can move along the axial direction of the guide members 230. The two guide pieces 230 are arranged, so that the moving contact 300 can be stable in the whole opening and closing movement process, the number of parts can be reduced, and the manufacturing cost is saved.

The housing 100 is provided with a grounding post 320, and the grounding post 320 is electrically connected with the moving contact 300. Specifically, referring to fig. 1, in the embodiment, a copper sheet 310 is disposed in the accommodating space 130, one end of the copper sheet 310 is connected with the grounding post 320, the other end of the copper sheet 310 is connected with the moving contact 300, and the adoption of the copper sheet 310 can ensure good conductivity between the moving contact 300 and the grounding post 320, and meanwhile, the flexibility of the copper sheet 310 can meet the requirement of opening and closing.

Referring to fig. 2, in some embodiments, to facilitate assembly of components of the grounding switch, the housing 100 includes a main body 110 and a cover plate 120, the main body 110 is provided with a cavity, the cover plate 120 covers an opening of the cavity, so that the housing 100 is formed with an accommodating space 130, the cover plate 120 is provided with a through hole 121, and the moving contact 300 is inserted into the through hole 121, so that assembly of components of the swing arm 410, the support 200, the moving contact 300, the grounding post 320, and the like can be facilitated through the opening of the cavity.

The gas-insulated fully-enclosed combined electrical apparatus according to the embodiment of the second aspect of the present utility model includes the grounding switch according to any one of the embodiments described above. According to the utility model, the bearing 420 is used for replacing the traditional shaft pin connecting structure, the transmission structure 400 is in rolling connection with the support 200 provided with the moving contact 300, so that the friction between the transmission structure 400 and the support 200 is reduced, the problem that a GIS rapid grounding switch is stuck during opening and closing can be solved, the transmission structure 400 of the grounding switch can smoothly and stably move, and the shaft pin is replaced by the bearing 420, so that the occurrence of the breaking phenomenon of the shaft pin is avoided, and the safety grounding of the gas-insulated fully-closed combined electrical appliance can be effectively ensured.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

Of course, the present utility model is not limited to the above-described embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present utility model, and these equivalent modifications or substitutions are included in the scope of the present utility model as defined in the appended claims.

Claims (10)

1. A grounding switch, comprising:

a housing, in which an accommodating space is provided;

the support is arranged in the accommodating space and can move along a preset direction;

the movable contact is in insulating connection with the support and can move along with the support so as to enable the movable contact to be positioned at a closing position or a separating position;

the transmission structure comprises a swing arm, one end of the swing arm is rotationally connected with the shell, a bearing is arranged at the other end of the swing arm, the bearing is in rolling connection with the support, and when the swing arm rotates, the support can be driven to move along the preset direction through the bearing.

2. The grounding switch according to claim 1, wherein the swing arm has a connecting portion and two transmission arms, the two transmission arms are disposed opposite to each other and are connected to the connecting portion, the connecting portion is rotatably connected to the housing, and one ends of the two transmission arms away from the connecting portion are provided with the bearings.

3. The grounding switch of claim 2, wherein opposite side walls of said support are provided with grooves, said bearings are provided in corresponding ones of said grooves, and said bearings are in rolling contact with the side walls of said grooves.

4. The grounding switch according to claim 1, wherein the transmission structure further comprises a rotating shaft rotatably provided in the housing, one end of the rotating shaft is located in the accommodating space, the other end of the rotating shaft extends out of the accommodating space, and one end of the swing arm is connected with the rotating shaft, so that the swing arm can rotate along with the rotating shaft.

5. A grounding switch according to any one of claims 1 to 4, wherein the support is provided with an insulating member, the moving contact being fixedly connected to the insulating member, and the support being fixedly connected to the insulating member.

6. The grounding switch as in claim 5, wherein a guide member is provided in the housing, the insulating member being disposed through the guide member, the insulating member being movable in an axial direction of the guide member when the swing arm is rotated.

7. The grounding switch of claim 1, wherein the housing is provided with a grounding post, the grounding post being electrically connected to the moving contact.

8. The grounding switch as in claim 7, wherein a copper sheet is disposed in the receiving space, one end of the copper sheet is connected to the grounding post, and the other end of the copper sheet is connected to the moving contact.

9. The grounding switch according to claim 1, wherein the housing includes a main body and a cover plate, the main body is provided with a cavity, the cover plate covers an opening of the cavity, so that the housing is formed with the accommodating space, the cover plate is provided with a through hole, and the moving contact penetrates through the through hole.

10. A gas-insulated fully-enclosed switchgear comprising a grounding switch as claimed in any one of claims 1 to 9.