CN219778722U - Crank arm guide structure for grounding switch and grounding switch - Google Patents
Crank arm guide structure for grounding switch and grounding switch Download PDFInfo
- Publication number
- CN219778722U CN219778722U CN202223341101.4U CN202223341101U CN219778722U CN 219778722 U CN219778722 U CN 219778722U CN 202223341101 U CN202223341101 U CN 202223341101U CN 219778722 U CN219778722 U CN 219778722U
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- Prior art keywords
- grounding switch
- shaft pin
- block
- hole
- guide structure
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- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims description 15
- 239000012212 insulator Substances 0.000 claims 1
- 239000002184 metal Substances 0.000 abstract description 8
- 230000006872 improvement Effects 0.000 description 10
- 230000009286 beneficial effect Effects 0.000 description 9
- 238000005299 abrasion Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 5
- 239000012634 fragment Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Mechanisms For Operating Contacts (AREA)
Abstract
The utility model belongs to the technical field of switch equipment, and particularly relates to a crank arm guide structure for a grounding switch and the grounding switch. The crank arm guide structure for the grounding switch comprises a guide sleeve, a guide sliding block is arranged in the guide sleeve in a sliding mode, a shaft pin hole is formed in the guide sliding block, a connecting rod is connected with the guide sliding block through a shaft pin in a transmission mode, and two ends of the shaft pin are sealed in the shaft pin hole. By closing the two ends of the shaft pin in the shaft pin holes, the friction between the shaft pin and the guide sleeve can be avoided to generate metal foreign matters, thereby preventing partial discharge.
Description
Technical Field
The utility model belongs to the technical field of switch equipment, and particularly relates to a crank arm guide structure for a grounding switch and the grounding switch.
Background
At present, GIS (gas insulated metal enclosed switchgear) is widely applied to power transformation equipment due to the fact that the GIS is less affected by the interference of external environment in the operation process, frequent maintenance is not needed, the occupied area is small, and the like, wherein the GIS is very popular in the application of grounding switches.
As shown in fig. 1, the contact form between the shaft sleeve 22 of the conventional grounding switch crank arm guiding structure and the inner wall of the conventional guiding sliding block 21 is surface contact, and abrasion is easy to occur in the opening and closing process. When the crank arm box 4 is horizontally placed and used, the existing shaft pin 12 in the guide cylinder 6 is in a vertical working condition, the existing shaft pin 12 can form line contact with the inner wall of the guide sleeve 3 under the action of gravity, friction and abrasion are generated in the opening and closing action of the crank arm 7, metal powder is generated between the friction and abrasion, GIS partial discharge is easily caused, and the GIS working performance is affected.
Disclosure of Invention
The utility model aims to provide a crank arm guide structure for a grounding switch, which solves the technical problem that in the prior art, the grounding switch crank arm guide structure generates metal foreign matters due to abrasion under the action of opening and closing to cause partial discharge.
The utility model also aims to provide a grounding switch so as to solve the same technical problems in the prior art.
In order to achieve the above purpose, the technical scheme of the crank arm guiding structure for the grounding switch provided by the utility model is as follows:
the crank arm guide structure for the grounding switch comprises a guide sleeve, wherein a guide sliding block is arranged in the guide sleeve in a sliding mode, the guide sliding block is provided with a shaft pin hole and is connected with a connecting rod through a shaft pin in a transmission mode, and two ends of the shaft pin are sealed in the shaft pin hole.
The beneficial effects are that: the utility model has the improvement that the two ends of the shaft pin are sealed in the shaft pin hole, so that the shaft pin is prevented from contacting with the guide sleeve in a vertical state, the partial discharge caused by metal foreign matters generated by friction and abrasion is prevented, and the whole structure is simple and compact and is easy to realize.
As a further improvement, the shaft pin hole is a blind hole, and one end of the shaft pin close to the opening of the shaft pin hole is provided with a blocking block.
The beneficial effects are that: the pin hole is a blind hole, so that the pin shaft is prevented from contacting and rubbing with the guide sleeve from one end of the pin shaft, and the blocking block is arranged at one end of the pin shaft, so that the blocking block can isolate the pin shaft from the guide sleeve, and the other end of the pin shaft is prevented from rubbing with the guide sleeve.
As a further improvement, the blocking block is an insulating block.
The beneficial effects are that: because the blocking block is made of insulating materials, friction and abrasion fragments are reduced to a certain extent, partial discharge can not be caused even if the fragments are generated, and therefore, the generation of metal foreign matters is avoided on the whole, and the partial discharge is prevented.
As a further improvement, the insulating block is in interference fit with the shaft pin hole.
The beneficial effects are that: the insulation block is in interference fit with the shaft pin hole, so that the insulation block can be further prevented from moving in the shaft pin hole and contacting the guide sleeve to generate friction.
As a further improvement, the overall length of the shaft pin and the blocking block is not greater than the depth of the blind hole.
The beneficial effects are that: the whole length of the shaft pin and the insulating block is not larger than the depth of the blind hole, so that the structure is simpler and more compact, the cost is saved, and interference installation of the whole length of the shaft pin and the insulating block exceeding the depth of the blind hole is avoided.
In order to achieve the above purpose, the technical scheme of the grounding switch provided by the utility model is as follows:
the utility model provides a grounding switch, includes the turning arm guide structure for the grounding switch, the turning arm guide structure for the grounding switch includes the uide bushing, the slip fit has the guide slider in the uide bushing, the guide slider is equipped with the axle pinhole and is connected with the connecting rod through the pivot transmission, the both ends of pivot are sealed in the axle hole.
As a further improvement, the shaft pin hole is a blind hole, and one end of the shaft pin close to the opening of the shaft pin hole is provided with a blocking block.
The beneficial effects are that: the pin hole is a blind hole, so that the pin shaft is prevented from contacting and rubbing with the guide sleeve from one end of the pin shaft, and the blocking block is arranged at the end part of the pin shaft, so that the blocking block can isolate the pin shaft from the guide sleeve, and the other end of the pin shaft is prevented from rubbing with the guide sleeve.
As a further improvement, the blocking block is an insulating block.
The beneficial effects are that: because the blocking block is made of insulating materials, friction and abrasion fragments are reduced to a certain extent, partial discharge can not be caused even if the fragments are generated, and therefore, the generation of metal foreign matters is avoided on the whole, and the partial discharge is prevented.
As a further improvement, the insulating block is in interference fit with the shaft pin hole.
The beneficial effects are that: the insulation block is in interference fit with the shaft pin hole, so that the insulation block can be further prevented from moving in the shaft pin hole and contacting the guide sleeve to generate friction.
As a further improvement, the overall length of the shaft pin and the blocking block is not greater than the depth of the blind hole.
The beneficial effects are that: the whole length of the shaft pin and the insulating block is not larger than the depth of the blind hole, so that the structure is simpler and more compact, the cost is saved, and interference installation of the whole length of the shaft pin and the insulating block exceeding the depth of the blind hole is avoided.
Drawings
Fig. 1 is a schematic structural view of a lever guide structure for an original grounding switch;
FIG. 2 is a schematic diagram of the lever guide structure for the grounding switch of the present utility model;
fig. 3 is a right-side view of the lever guide structure for the grounding switch of the present utility model.
Reference numerals illustrate:
1. a shaft pin; 11. an insulating block; 12. an existing shaft pin; 2. a guide slide block; 21. the existing guide sliding block; 22. a shaft sleeve; 3. a guide sleeve; 4. a crank arm box; 5. a connecting rod; 6. a guide cylinder; 7. and (5) a crank arm.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the utility model, i.e., the embodiments described are merely some, but not all, of the embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The present utility model is described in further detail below with reference to examples.
Specific embodiment 1 of the grounding switch provided by the utility model:
as shown in fig. 2 and 3, the grounding switch provided in this embodiment includes a lever box 4, a lever 7 and a connecting rod 5 are in transmission connection in the lever box 4, and the connecting rod 5 is in transmission connection with the guide slider 2 through a shaft pin 1 in a guide cylinder 6.
In this embodiment, the end of the guide slider 2 near the connecting rod 5 is sealed radially inward and provided with a through hole into which the connecting rod 5 is inserted, and the pin hole of the pin 1 is a blind hole, and the blind hole penetrates through the through hole and the aperture of the pin hole is smaller than the aperture of the through hole. The parts between the guide slide block 2 and the connecting rod 5 are integrally connected, so that the shaft sleeve is prevented from being additionally connected with the connecting rod 5, friction and abrasion between the shaft sleeve and the guide slide block 2 are prevented, the whole transmission structure is simple and compact, and the installation is simplified.
In the embodiment, the pin hole is a blind hole, so that the pin 1 passes through the guide sliding block 2 from one side of the blind hole closed end in a vertical state to directly rub with the guide sleeve 3 to generate metal foreign matters, and partial discharge is avoided. The one end fixedly connected with insulating piece 11 of pivot 1 towards blind hole open end, insulating piece 11 and blind hole interference fit guarantee the stability of insulating piece 11 installation, avoid insulating piece 11 to move in the blind hole in series, pivot 1 length is less than blind hole degree of depth and pivot 1 and insulating piece 11's overall length equals the blind hole degree of depth simultaneously, thereby make pivot 1 leave the space for insulating piece 11, utilize insulating piece 11 to replace pivot 1 to follow the open end of blind hole and uide bushing 3 contact, can reduce the production of frictional wear piece to a certain extent, and can avoid partial discharge, overall structure is simpler compact, the cost is lower, avoid pivot 1 and insulating piece 11 overall length to surpass blind hole degree of depth interference installation simultaneously.
Specific embodiment 2 of the grounding switch provided by the utility model:
in embodiment 1 of the grounding switch of the utility model, the pin hole is a blind hole, and a blocking block is arranged at one end of the pin 1. In this embodiment, the pin holes may still be through holes, but both ends of the pin 1 may be provided with plugs, or an insulating rod with sufficient strength may be directly used instead of the pin 1.
Specific embodiment 3 of the grounding switch provided by the utility model:
in embodiment 1 of the grounding switch of the present utility model, the block is an insulating block 11. In this embodiment, the blocking member may be made of a material having high wear resistance, so as to prevent generation of debris due to friction.
Specific embodiment 4 of the grounding switch provided by the utility model:
in embodiment 1 of the grounding switch of the utility model, the insulating block 11 is interference fit with the shaft pin hole. In this embodiment, the pin hole and the insulating block 11 may be in transition fit, and the insulating block and the pin are preferably fixedly connected.
Specific embodiment 5 of the grounding switch provided by the utility model:
in embodiment 1 of the grounding switch of the utility model, the overall length of the shaft pin 1 and the insulating block 11 is equal to the depth of the blind hole. In this embodiment, the overall length of the shaft pin 1 and the insulating block 11 may be slightly smaller than the depth of the blind hole, so that the insulating block 11 is not in contact with the guide sleeve 3 when the blind hole closed end is vertically downward while saving materials.
Embodiments of a lever guide structure for a grounding switch in the present utility model:
the example of the grounding switch lever guide structure, that is, the grounding switch lever guide structure described in any one of examples 1 to 5 of the grounding switch, will not be described in detail here.
It should be noted that the above-mentioned embodiments are merely preferred embodiments of the present utility model, and the present utility model is not limited to the above-mentioned embodiments, but may be modified without inventive effort or equivalent substitution of some of the technical features thereof by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The utility model provides a turn arm guide structure for earthing switch, includes the uide bushing, the uide bushing sliding fit has the guide slider, the guide slider is equipped with the axle pinhole and is connected with the connecting rod through the pivot transmission, its characterized in that, the both ends of pivot seal in the axle hole.
2. The lever guide structure for a grounding switch according to claim 1, wherein the shaft pin hole is a blind hole, and a block is provided at one end of the shaft pin near an opening of the shaft pin hole.
3. The lever guide structure for a grounding switch according to claim 2, wherein the block is an insulating block.
4. The lever guide structure for a grounding switch according to claim 3, wherein the insulating block is interference-fitted with the shaft pin hole.
5. The lever guide structure for a grounding switch according to any one of claims 2 to 4, wherein the overall length of the shaft pin and the block is not greater than the depth of the blind hole.
6. The utility model provides a grounding switch, includes the turning arm guide structure for the grounding switch, the turning arm guide structure for the grounding switch includes the uide bushing, the slip fit has the guide slider in the uide bushing, the guide slider is equipped with the axle pinhole and is connected with the connecting rod through the pivot transmission, characterized by, the both ends of pivot are sealed in the axle hole.
7. The grounding switch as in claim 6, wherein the pin hole is a blind hole, and a block is provided at an end of the pin near the opening of the pin hole.
8. The grounding switch of claim 7, wherein said blocking member is an insulating member.
9. The grounding switch of claim 8, wherein said insulator block is an interference fit with the pin hole.
10. A grounding switch according to any one of claims 7-9, characterized in that the overall length of the pin and the block is not greater than the depth of the blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223341101.4U CN219778722U (en) | 2022-12-13 | 2022-12-13 | Crank arm guide structure for grounding switch and grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223341101.4U CN219778722U (en) | 2022-12-13 | 2022-12-13 | Crank arm guide structure for grounding switch and grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219778722U true CN219778722U (en) | 2023-09-29 |
Family
ID=88110125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223341101.4U Active CN219778722U (en) | 2022-12-13 | 2022-12-13 | Crank arm guide structure for grounding switch and grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219778722U (en) |
-
2022
- 2022-12-13 CN CN202223341101.4U patent/CN219778722U/en active Active
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