CN110890233A - Direct-drive insertion type grounding switch contact with buffering and guiding functions - Google Patents
Direct-drive insertion type grounding switch contact with buffering and guiding functions Download PDFInfo
- Publication number
- CN110890233A CN110890233A CN201911105724.1A CN201911105724A CN110890233A CN 110890233 A CN110890233 A CN 110890233A CN 201911105724 A CN201911105724 A CN 201911105724A CN 110890233 A CN110890233 A CN 110890233A
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- Prior art keywords
- grounding
- contact
- guide channel
- guide
- buffer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/36—Contacts characterised by the manner in which co-operating contacts engage by sliding
- H01H1/44—Contacts characterised by the manner in which co-operating contacts engage by sliding with resilient mounting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/64—Protective enclosures, baffle plates, or screens for contacts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
Landscapes
- Elimination Of Static Electricity (AREA)
Abstract
The invention discloses a direct-impact insertion type grounding switch contact with buffering and guiding functions, which comprises: the static contact mechanism comprises a current-conducting plate, a guide cover and a grounding contact finger, wherein the guide cover comprises a cylinder part and a guide channel, one end of the cylinder part is fixedly connected to the current-conducting plate, the guide channel is transversely arranged at the other end of the cylinder part, the guide channel is in a V shape, the bottom of the channel of the guide channel is aligned with the cylinder of the cylinder part, and the grounding contact finger is in a cylindrical shape matched with the cylinder part and is arranged in the cylinder part; the movable contact mechanism comprises a grounding conducting rod and a movable contact, the grounding conducting rod rotates by taking one point on an axis as a circle center, the movable contact is arranged at the top end of the grounding conducting rod, the guide channel is positioned on a rotating path of the movable contact, and a guide opening of the guide channel faces the movable contact.
Description
Technical Field
The invention relates to the technical field of power equipment, in particular to a direct-impact insertion type high-voltage grounding switch contact with buffering and guiding functions.
Background
In an electric power transmission and distribution system, a high-voltage grounding switch is widely applied to a transformer substation as an electric device for grounding protection when equipment is overhauled in a high-voltage line. The 550kV and below grounding switch generally adopts a folding arm type structure, a direct-hitting type structure or a direct-hitting insertion type structure.
Compared with a folding arm type structure, the direct-hitting type structure and the direct-hitting insertion type structure have the advantages of less parts, simple structure, smaller failure rate and low cost; the defects are that the linear velocity is high when the moving contact at the tail end of the disconnecting link moves, and the collision is large when the moving contact is contacted with the fixed contact.
The action principle of the direct beating type structure is as follows: the grounding conducting rod rotates upwards in the vertical plane, so that a moving contact on the conducting rod is directly inserted into the grounding fixed contact to complete closing. The action principle of the direct-drive insertion type structure is as follows: the grounding conducting rod firstly makes upward rotary motion in a vertical plane to enable a moving contact on the grounding conducting rod to approach a grounding static contact, and then makes upward linear motion to enable the moving contact to be inserted into the grounding static contact, so that closing action is completed. The direct-drive insertion structure has the advantages of effectively reducing impact force during switching-on, enabling actions to be more stable and enabling contact between the moving contact and the static contact to be better than the direct-drive structure, and has better capabilities of preventing wind and sand and preventing dirt due to the fact that the direct-drive insertion structure can completely wrap the top of the grounding contact finger and the periphery of the grounding contact finger by the static contact.
Disclosure of Invention
The invention aims to provide a direct-impact insertion type high-voltage grounding switch contact with buffering and guiding functions, which can provide a guiding function during switching on and well complete the switching on action.
The technical scheme adopted by the invention is as follows: a direct-impact insertion type earthing switch contact with buffering and guiding functions, comprising:
the static contact mechanism comprises a current-conducting plate, a guide cover and a grounding contact finger, wherein the guide cover comprises a cylinder part and a guide channel, one end of the cylinder part is fixedly connected to the current-conducting plate, the guide channel is transversely arranged at the other end of the cylinder part, the guide channel is in a V shape, the bottom of the channel of the guide channel is aligned with the cylinder of the cylinder part, and the grounding contact finger is in a cylindrical shape matched with the cylinder part and is arranged in the cylinder part;
the movable contact mechanism comprises a grounding conducting rod and a movable contact, the grounding conducting rod rotates by taking one point on an axis as a circle center, the movable contact is arranged at the top end of the grounding conducting rod, the guide channel is positioned on a rotating path of the movable contact, and a guide opening of the guide channel faces the movable contact.
Further optimization, the inner side wall of the guide channel is provided with a buffer device for preventing the moving contact from being impacted.
Further preferably, the buffer device comprises first buffer mechanisms arranged at two sides of the guide channel and second buffer mechanisms arranged at the bottom of the guide channel;
the first buffer mechanism comprises two buffer sheets which are oppositely arranged on two sides of the inner wall of the inlet of the guide channel, the head ends of the buffer sheets are fixedly arranged on the inner wall of the guide channel through insulating cushion blocks, the tail ends of the buffer sheets extend along the channel direction of the guide channel, the tail ends of the two buffer sheets are oppositely arranged to form an outlet, and the outlet is smaller than the rod diameter of the movable contact;
the second buffer mechanism comprises a guide block, the guide block is arranged on the inner wall of the bottom of the channel of the guide channel, the guide block is U-shaped, the opening of the guide block is in butt joint with the outlet formed by the two buffer pieces, and the width of the opening is larger than the width of the outlet.
Further preferably, the inner side wall of the guide block is provided with a lining made of engineering plastics.
Preferably, the cylinder part is cylindrical, an annular groove is formed in the outer side surface of the grounding contact finger, a clamping spring ring is installed in the groove, and an inner bushing is arranged on the inner side of the grounding contact finger.
Preferably, the grounding contact finger is in direct electrical contact with the conductive plate.
The direct-impact insertion type grounding switch contact with the buffering and guiding functions provided by the embodiment of the invention at least has the following beneficial effects: through setting up the direction passageway, provide the guide effect for the ground connection conducting rod is in the end entering direction passageway of rotation stroke, and supplementary ground connection conducting rod accomplishes the action of closing a floodgate better.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a direct impact type grounding switch contact with buffering and guiding functions according to an embodiment of the invention;
fig. 2 is a schematic diagram of a moving contact of a direct impact type grounding switch contact with buffering and guiding functions entering a guiding channel according to an embodiment of the invention;
FIG. 3 is a bottom view of the stationary contact portion of FIG. 1;
fig. 4 is a partially enlarged schematic view of a portion of the stationary contact of fig. 2.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to the embodiment shown in fig. 1 and 2, the direct impact insertion type earthing switch contact with buffering and guiding functions comprises:
the static contact mechanism comprises a conductive plate 100, a guide cover 200 and a grounding contact finger 300, wherein the guide cover 200 comprises a cylinder 210 and a guide channel 220, one end of the cylinder 210 is fixedly connected to the conductive plate 100, the guide channel 220 is transversely arranged at the other end of the cylinder 210, the guide channel 220 is in a V shape, the bottom of the guide channel 220 is aligned with the cylinder of the cylinder 210, and the grounding contact finger 300 is in a cylinder shape matched with the cylinder 210 and is arranged in the cylinder;
the moving contact mechanism comprises a grounding conducting rod 400 and a moving contact 500, wherein the grounding conducting rod 400 rotates around a point on an axis, the moving contact 500 is arranged at the top end of the grounding conducting rod 400, the guide channel 220 is positioned on a rotating path of the moving contact 500, and a guide opening of the guide channel 220 faces the moving contact 500.
Under the driving of the corresponding driving device, the movable contact 500 rotates with the grounding conductive rod 400 around a point on the axis as the center of a circle, and at the end of the upward rotating stroke of the grounding conductive rod 400, the movable contact 500 enters the guide channel 220 from the opening of the guide channel 220 and continues to advance along the guide channel 220 until entering the inner wall of the bottom of the guide channel 220, and at this time, the grounding conductive rod 400 can be aligned with the cylinder 210, i.e., aligned with the grounding contact finger 300 in the cylinder 210. Under the driving of the related driving device, the grounding conductive rod 400 moves upward to accurately insert the grounding contact finger 300, thereby completing the closing operation.
According to the invention, the guide channel 220 is arranged to provide a guide effect for the grounding conductive rod 400, so that the grounding conductive rod 400 is aligned with the grounding contact finger 300 before switching on, the grounding conductive rod 400 is assisted to better complete the switching on action, and the situation that the grounding conductive rod 400 cannot complete the switching on action due to dislocation with the grounding contact finger 300 before switching on is avoided.
In this embodiment, a buffer device for preventing the moving contact 500 from being hit is disposed on the inner sidewall of the guiding channel 220. In order to prevent the ground conductive rod 400 from impacting the inner sidewall of the guide channel 220 when entering and moving in the guide channel 220, a buffer device is disposed on the inner sidewall of the guide channel 220 to provide a buffer effect and protect the guide channel 220.
As shown in fig. 3 and 4, the buffer device includes first buffer mechanisms provided at both sides of the guide passage 220, and second buffer mechanisms provided at the passage bottom of the guide passage 220;
the first buffer mechanism comprises two buffer sheets 610 which are oppositely arranged on two sides of the inner wall of the inlet of the guide channel, the head ends of the buffer sheets 610 are fixedly arranged on the inner wall of the guide channel 220 through an insulating cushion block 620, the tail ends of the buffer sheets 610 extend along the channel direction of the guide channel 220, the tail ends of the two buffer sheets 610 are oppositely arranged to form an outlet, and the outlet is smaller than the rod diameter of the movable contact 500;
after the movable contact 500 enters the guide channel, when the movable contact 500 hits against the inner wall of the guide channel 220, the buffer sheet 610 blocks the movable contact from hitting against the inner wall of the guide channel 220.
Meanwhile, the head end of the buffer sheet 610 is fixedly arranged on the inner wall of the guide channel 220 through the insulating pad 620, and thus the tail end of the buffer sheet is tilted. When the movable contact 500 passes through the two buffer pieces 610 to form an outlet, the movable contact 500 needs to overcome the clamping force of the two buffer pieces 610, thereby playing a role of buffering to reduce the kinetic energy of the movable contact 500; the outlet between the two buffer sheets 610 also serves as a guide, so that the movable contact 500 enters the bottom of the channel of the guide channel in the limited area thereof. Wherein the buffer sheet 610 is made of a material having a certain elasticity.
The second buffer mechanism comprises a guide block 710, the guide block 710 is arranged on the inner wall of the bottom of the channel of the guide channel 220, the guide block 710 is U-shaped, the opening of the guide block 710 is in butt joint with the outlet formed by the two buffer sheets 610, and the width of the opening is larger than the width of the outlet.
The movable contact 500 enters the guide block 710 after passing through the outlet between the two buffer pieces 610, the guide block 710 is U-shaped, and the slot portion of the guide block is matched with the rod diameter of the movable contact 500, so that the movable contact 500 is aligned with the grounding contact finger 300. Wherein, a certain gap is formed between the inner wall of the guide block 710 and the outer wall of the buffer sheet 610, and a certain elastic space is reserved for the buffer sheet 610.
An inner lining 720 made of engineering plastics is arranged on the inner side wall of the guide block 710. The movable contact 500 is repeatedly inserted into the grounding contact finger 300 during the service life cycle of the device. Through setting up inside lining 720, when reducing frictional resistance, improve the wearability, prolong the life of equipment.
The cylinder 210 is cylindrical, an annular groove is formed in the outer side surface of the ground contact finger 300, a clamping spring ring 800 is mounted in the groove, and an inner bushing 900 is arranged on the inner side of the ground contact finger 300.
The structure of the cylindrical grounding contact finger 300 and the round bar-shaped moving contact 500 is adopted, the cylindrical grounding contact finger 300 is composed of a plurality of contact fingers, and a clamping spring ring 800 is arranged at the position of an outer groove. The cylindrical grounding contact fingers 300 and the round bar-shaped moving contact 500 can still ensure that each contact finger is reliably contacted with the grounding contact finger 300 when the center line of the moving contact 500 deviates from the center line of the grounding contact finger 300.
The inner bushing 900 first expands the grounding contact finger 300 to a certain size, so as to reduce the initial resistance of the movable contact 500 inserted into the grounding contact finger 300 upward. And the clamping spring ring 800 ensures that the grounding contact finger 300 and the movable contact 500 have reliable contact pressure.
In the present embodiment, the ground contact finger 300 is in direct electrical contact with the conductive plate 100. The number of parts in the through-current path is reduced, the conductive contact surface is reduced, and other problems such as heating caused by poor contact of the conductive surface are prevented.
The present invention 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 invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (6)
1. The utility model provides a take buffering and direction function's direct drive plug-in earthing switch contact which characterized in that includes:
the static contact mechanism comprises a conductive plate (100), a guide cover (200) and a grounding contact finger (300), wherein the guide cover (200) comprises a cylinder part (210) and a guide channel (220), one end of the cylinder part (210) is fixedly connected to the conductive plate (100), the guide channel (220) is transversely arranged at the other end of the cylinder part (210), the guide channel (220) is V-shaped, the bottom of the channel of the guide channel (220) is aligned with the cylinder body of the cylinder part (210), and the grounding contact finger (300) is matched with the cylinder part (210) in a cylindrical shape and is arranged in the cylinder part (210);
the moving contact mechanism comprises a grounding conducting rod (400) and a moving contact (500), the grounding conducting rod (400) rotates by taking one point on an axis as a circle center, the moving contact (500) is arranged at the top end of the grounding conducting rod (400), the guide channel (220) is positioned on a rotating path of the moving contact (500), and a guide opening of the guide channel (220) faces towards the moving contact (500).
2. The direct impact grounding switch contact with buffering and guiding function according to claim 1, wherein: and a buffer device for preventing the moving contact (500) from being impacted is arranged on the inner side wall of the guide channel (220).
3. The direct impact grounding switch contact with buffering and guiding function as claimed in claim 2, wherein: the buffer device comprises first buffer mechanisms arranged at two sides of the guide channel (220) and second buffer mechanisms arranged at the bottom of the guide channel (220);
the first buffer mechanism comprises two buffer sheets (610) which are oppositely arranged on two sides of the inner wall of the inlet of the guide channel, the head ends of the buffer sheets (610) are fixedly arranged on the inner wall of the guide channel (220) through insulating cushion blocks (620), the tail ends of the buffer sheets (610) extend along the channel direction of the guide channel (220), the tail ends of the two buffer sheets (610) are oppositely arranged to form an outlet, and the outlet is smaller than the rod diameter of the movable contact (500);
the second buffer gear includes guide block (710), establish guide block (710) on the passageway bottom inner wall of direction passageway (220), guide block (710) are the U-shaped, the opening and two of guide block (710) the export butt joint that buffer sheet (610) formed, and opening width is greater than the export width.
4. The direct impact grounding switch contact with buffering and guiding function as claimed in claim 3, wherein: and the inner side wall of the guide block (710) is provided with a lining (720) made of engineering plastics.
5. The direct impact grounding switch contact with buffering and guiding function according to any one of claims 1 to 4, wherein: the grounding contact finger is characterized in that the cylinder part (210) is cylindrical, an annular groove is formed in the outer side surface of the grounding contact finger (300), a clamping spring ring (800) is installed in the groove, and an inner lining (900) is arranged on the inner side of the grounding contact finger (300).
6. The direct impact grounding switch contact with buffering and guiding function according to any one of claims 1 to 4, wherein: the grounding contact finger (300) is in direct electrical contact with the conductive plate (100).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105724.1A CN110890233A (en) | 2019-11-13 | 2019-11-13 | Direct-drive insertion type grounding switch contact with buffering and guiding functions |
| PCT/CN2020/081676 WO2021093253A1 (en) | 2019-11-13 | 2020-03-27 | Direct-insertion grounding switch contact having buffering and guiding functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105724.1A CN110890233A (en) | 2019-11-13 | 2019-11-13 | Direct-drive insertion type grounding switch contact with buffering and guiding functions |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110890233A true CN110890233A (en) | 2020-03-17 |
Family
ID=69747421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911105724.1A Pending CN110890233A (en) | 2019-11-13 | 2019-11-13 | Direct-drive insertion type grounding switch contact with buffering and guiding functions |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110890233A (en) |
| WO (1) | WO2021093253A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093253A1 (en) * | 2019-11-13 | 2021-05-20 | 湖南长高高压开关集团股份公司 | Direct-insertion grounding switch contact having buffering and guiding functions |
| CN113675017A (en) * | 2021-08-23 | 2021-11-19 | 中检集团公信安全科技有限公司 | Device and method for measuring emergency braking lost motion time of monorail crane |
| WO2022121361A1 (en) * | 2020-12-11 | 2022-06-16 | 平高集团有限公司 | Static contact of grounding switch, and straight-swing plug-in type grounding switch |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114429879B (en) * | 2021-12-16 | 2024-03-22 | 河南平高电气股份有限公司 | Isolation static contact and three-station isolation grounding switch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03196433A (en) * | 1989-12-26 | 1991-08-27 | Takaoka Electric Mfg Co Ltd | Ground switch with resistor |
| CN2583795Y (en) * | 2002-09-28 | 2003-10-29 | 杜乐田 | Outdoor high voltage isolated switch |
| CN103617919B (en) * | 2013-12-06 | 2016-05-25 | 山东泰开隔离开关有限公司 | A kind of high-end straight-wavy valve Room earthed switch |
| CN108711529B (en) * | 2018-08-06 | 2024-04-05 | 湖南长高高压开关有限公司 | Extra-high voltage + -1100 kv direct current folding arm telescopic horizontal type ground grounding switch |
| CN110890233A (en) * | 2019-11-13 | 2020-03-17 | 湖南长高高压开关集团股份公司 | Direct-drive insertion type grounding switch contact with buffering and guiding functions |
-
2019
- 2019-11-13 CN CN201911105724.1A patent/CN110890233A/en active Pending
-
2020
- 2020-03-27 WO PCT/CN2020/081676 patent/WO2021093253A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021093253A1 (en) * | 2019-11-13 | 2021-05-20 | 湖南长高高压开关集团股份公司 | Direct-insertion grounding switch contact having buffering and guiding functions |
| WO2022121361A1 (en) * | 2020-12-11 | 2022-06-16 | 平高集团有限公司 | Static contact of grounding switch, and straight-swing plug-in type grounding switch |
| CN113675017A (en) * | 2021-08-23 | 2021-11-19 | 中检集团公信安全科技有限公司 | Device and method for measuring emergency braking lost motion time of monorail crane |
| CN113675017B (en) * | 2021-08-23 | 2024-05-31 | 中检集团公信安全科技有限公司 | Device and method for measuring emergency braking lost motion time of monorail crane |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021093253A1 (en) | 2021-05-20 |
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