CN201655637U - High-voltage isolation and grounding switch - Google Patents
High-voltage isolation and grounding switch Download PDFInfo
- Publication number
- CN201655637U CN201655637U CN2010201410778U CN201020141077U CN201655637U CN 201655637 U CN201655637 U CN 201655637U CN 2010201410778 U CN2010201410778 U CN 2010201410778U CN 201020141077 U CN201020141077 U CN 201020141077U CN 201655637 U CN201655637 U CN 201655637U
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- CN
- China
- Prior art keywords
- knife bar
- rotating shaft
- transmission
- end cap
- urceolus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a high-voltage isolation and grounding switch, which comprises a grounding pole rotationally assembled on a base through a pole rotating shaft. The pole rotating shaft is in transmission connection onto a driving mechanism through a transmission connecting rod mechanism. The high-voltage isolation and grounding switch is characterized in that the transmission connecting rod mechanism comprises a crank arm, a transmission rod and a pull rod, wherein the crank arm is radially fixed on the pole rotating shaft, the transmission rod is radially fixed on an output shaft of the driving mechanism, the pull rod is respectively in transmission connection with the crank arm and the transmission rod, and two ends of the pull rod are respectively in transmission connection with the crank arm and the transmission rod through self-lubricating ball head joint bearings. The high-voltage isolation and grounding switch is connected with the transmission mechanism of the grounding pole through the self-lubricating ball head joint bearings, can prevent impurities such as dust, sand and the like entering inside, can avoid connection jamming problems caused by processing errors existed among connecting rod mechanisms, and increases use reliability.
Description
Technical field
The utility model high-voltage electrical apparatus switching technique field relates generally to a kind of high pressure isolation, earthed switch that is used for high-voltage earthing.
Background technology
In the high pressure electric line, operating personnel's safety when guaranteeing plant maintenance all needs to carry out ground protection during high voltage isolator separating brake in the main line.Main grounded circuit on the existing high voltage isolator mainly comprises main ground connection knife bar that is installed on the pedestal and the ground connection fixed contact that is installed on the static contact seat, main ground connection knife bar adopts single armed directly to swing the formula structure, its the last knife bar and following knife bar of connecting and being hinged together by head and the tail is formed, the end of last knife bar is provided with the ground connection moving contact, the end of following knife bar radially is fixed on the power transmission shaft, power transmission shaft is in transmission connection by connecting rod and connecting lever and Drive Structure, between last knife bar and pedestal, also be connected with balancing spring, because the tension of balancing spring makes, has certain angle between the following knife bar.When grounded circuit closes a floodgate, power transmission shaft drives down, and knife bar drives upward knife bar rotation, when last knife bar touches the ground connection fixed contact, last knife bar customization rotation, but thereby following knife bar disappears and is straight line being rotated further the angle that makes between the upper and lower knife bar under the power transmission shaft effect, and following knife bar upwards stretches in the ground connection fixed contact finishes ground connection.But the main rotatable connecting portion of this high voltage isolator mainly adopts conventional rolling bearing to connect, its sealing is relatively poor, and the dust storm in NORTHWEST CHINA area is more, the grains of sand enter into rotatable connecting portion or bearing and cause the wearing and tearing of rotating connecting part easily or the grains of sand occur and silt catching phenomenon up, influence the action of ground connection knife bar, can not accurately contact when causing the action of ground connection knife bar, influence the safety of electrical power trans mission/distribution system with the ground connection fixed contact.
The utility model content
The purpose of this utility model provides a kind of high pressure isolation, earthed switch that weares and teares less, that the anti-blown sand ability is strong.
The technical solution of the utility model is: a kind of high pressure is isolated, earthed switch, comprise by the knife bar rotating shaft and rotate the ground connection knife bar that is assemblied on the pedestal, described knife bar rotating shaft is connected on the driving mechanism by the kinematic link mechanism driving, described kinematic link mechanism comprises the connecting lever that radially is fixed in the knife bar rotating shaft, the pull bar that radially is fixed on the drive link on the driving mechanism output shaft and is in transmission connection with described connecting lever and drive link respectively, and the two ends of described pull bar are in transmission connection by self-lubricating bulb oscillating bearing and connecting lever and drive link respectively.
The sliding bearing that described knife bar rotating shaft constitutes by the graphite polytetrafluoroethylene cover of suit on it rotates and is assemblied on the pedestal.
Described ground connection knife bar comprises last knife bar and the following knife bar that head and the tail are connected and are hinged together, following knife bar radially is fixed in the described knife bar rotating shaft, between last knife bar and pedestal, be connected with balancing spring mechanism, described balancing spring mechanism comprises urceolus, the two ends of urceolus are respectively equipped with end cap, be fixedly connected with a fixed lever on one of them end cap, slide in another end cap and be coated with a slide link, this slide link stretches into that roof pressure is provided with spring between the inner of urceolus and this end cap inwall, is provided with wear-resisting dirt-proof boot between this end cap and slide link.
Described wear-resisting dirt-proof boot is positioned at radially to convex with on the cylindrical of an end of urceolus and is used for the convex edge of joining with end cap inwall card.
The end that described wear-resisting dirt-proof boot is positioned at urceolus extends axially the inner ring that stretches into spring.
The utility model connects the transmission mechanism of ground connection knife bar by self-lubricating bulb oscillating bearing, because the sealing of self-lubricating bulb oscillating bearing self must will be got well by plain bearing, thereby can prevent that impurity such as dust and sand from entering wherein, guarantee the normal operation of ground connection knife bar transmission mechanism, and because self-lubricating bulb oscillating bearing has multiple degrees of freedom, thereby can avoid because of between each linkage because the connection clamping stagnation problem that exists mismachining tolerance to produce, guarantee normally being in transmission connection between each linkage, improve the dependability of isolation, earthed switch.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the drive mechanism schematic diagram of ground connection knife bar in the utility model;
Fig. 3 is the structural representation of counter spring structure in the utility model.
Embodiment
As Fig. 1 ~ shown in Figure 3, high pressure of the present utility model is isolated, earthed switch comprises pedestal 1, the top of pedestal 1 is equipped with ground connection fixed contact 14 by insulation porcelain knob 15, by the knife bar rotating shaft 2 of rotating assembling the ground connection knife bar is installed on the pedestal 1, the sliding bearing that knife bar rotating shaft 2 constitutes by the graphite polytetrafluoroethylene cover of suit on it rotates and is assemblied on the pedestal 1, be provided with the driving mechanism 16 of ground connection knife bar in the bottom of pedestal 1, wherein, the power output shaft 17 of driving mechanism 16 extends upward, axle head at this power output shaft 17 radially is fixed with a drive link 7, in knife bar rotating shaft 2, radially be fixed with a transmission crank arm 10, between transmission crank arm 10 and drive link 7, be connected with a pull bar 9, one end of pull bar 9 is in transmission connection by self-lubricating bulb oscillating bearing 8 and drive link 7, and the other end of pull bar 9 is in transmission connection by self-lubricating bulb oscillating bearing 11 and transmission crank arm 10.The utility model has adopted self-lubricating bulb oscillating bearing to connect the linkage that drives the ground connection knife bar, it has increased the performance of the transmission mechanism anti-blown sand of ground connection knife bar, make this high pressure isolation earthing switch also can accurately move for a long time, reduce the repair and maintenance intensity of transmission of electricity corridor, northwest electrical power trans mission/distribution system in the bigger the Northwest of China's dust storm.The knife bar rotating shaft of ground connection knife bar is rotated by graphite polytetrafluoroethylene cover and is assemblied on the pedestal, it can guarantee that not only the knife bar rotating shaft is able to light rotation, reduce the stressed of transmission mechanism, reduce the wearing and tearing between the transmission mechanism, and and can prevent the wearing and tearing of sand and dust to the part that is rotationally connected of knife bar rotating shaft, the actuating reliability of ground connection knife bar on the increase isolating switch.
In the present embodiment, the ground connection knife bar comprises last knife bar 4 and the following knife bar 3 that head and the tail are connected and are hinged together, following knife bar 3 radially is fixed on the end of knife bar rotating shaft 2, between last knife bar 4 and pedestal 1, be connected with balancing spring mechanism, this balancing spring mechanism comprises urceolus 51, the two ends of urceolus 51 are respectively equipped with end cap 52, wherein be fixedly connected with a fixed lever 53 on the right side end cap 52, slide in the end cap 52 of left side and be coated with a slide link 54, the end that this slide link 54 stretches into the inner of urceolus 51 is fixed with pressing plate 57, be provided with a location-plate 55 towards inboard at pressing plate 57 with left side end cap 52, roof pressure is provided with spring 56 between the inwall of this location-plate 55 and left side end cap 52, location-plate 52 extends axially in the heart in the end face of left side end cap 52 and convexes with the boss that is used for the radial location spring, the outer rim of this location-plate 55 and the inwall of urceolus are slidingly matched, between left side end cap 52 and slide link, be provided with wear-resisting dirt-proof boot 58, slide link 54 is located in this wear-resisting dirt-proof boot 58, be positioned at the convex edge that radially convexes with annular on the outer circumference surface of urceolus inboard at wear-resisting dirt-proof boot 58, this convex annular is along end cap 52 blocks in quilt left side, the end roof pressure of spring 56 is on the convex annular edge of this wear-resisting dirt-proof boot 58, simultaneously, wear-resisting dirt-proof boot 58 end that is arranged in urceolus extends axially as spring 56 and produces circular runouts to prevent spring 56.Wear-resisting dirt-proof boot is set between the urceolus of the balancing spring mechanism that connects on the ground connection knife bar and sliding tie rod can prevents that sand and dust from entering into the alluvial of urceolus back, thereby hinder the stroke of sliding tie rod and spring, it has kept the cleaning in the urceolus, guaranteed the regular event of ground connection knife bar, knife bar can accurately be inserted in the ground connection fixed contact, improve the reliability of isolating switch ground connection.
Claims (5)
- A high pressure isolate, earthed switch, comprise by the knife bar rotating shaft and rotate the ground connection knife bar that is assemblied on the pedestal, described knife bar rotating shaft is connected on the driving mechanism by the kinematic link mechanism driving, it is characterized in that, described kinematic link mechanism comprises the connecting lever that radially is fixed in the knife bar rotating shaft, the pull bar that radially is fixed on the drive link on the driving mechanism output shaft and is in transmission connection with described connecting lever and drive link respectively, and the two ends of described pull bar are in transmission connection by self-lubricating bulb oscillating bearing and connecting lever and drive link respectively.
- 2. high pressure according to claim 1 is isolated, earthed switch, it is characterized in that, the sliding bearing that described knife bar rotating shaft constitutes by the graphite polytetrafluoroethylene cover of suit on it rotates and is assemblied on the pedestal.
- 3. high pressure according to claim 1 and 2 is isolated, earthed switch, it is characterized in that, described ground connection knife bar comprises last knife bar and the following knife bar that head and the tail are connected and are hinged together, following knife bar radially is fixed in the described knife bar rotating shaft, between last knife bar and pedestal, be connected with balancing spring mechanism, described balancing spring mechanism comprises urceolus, the two ends of urceolus are respectively equipped with end cap, be fixedly connected with a fixed lever on one of them end cap, slide in another end cap and be coated with a slide link, this slide link stretches into that roof pressure is provided with spring between the inner of urceolus and this end cap inwall, is provided with wear-resisting dirt-proof boot between this end cap and slide link.
- 4. high pressure according to claim 3 is isolated, earthed switch, it is characterized in that, described wear-resisting dirt-proof boot is positioned at radially to convex with on the cylindrical of an end of urceolus and is used for the convex edge of joining with end cap inwall card.
- 5. high pressure according to claim 4 is isolated, earthed switch, it is characterized in that the end that described wear-resisting dirt-proof boot is positioned at urceolus extends axially the inner ring that stretches into spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201410778U CN201655637U (en) | 2010-03-25 | 2010-03-25 | High-voltage isolation and grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201410778U CN201655637U (en) | 2010-03-25 | 2010-03-25 | High-voltage isolation and grounding switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201655637U true CN201655637U (en) | 2010-11-24 |
Family
ID=43120881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201410778U Expired - Lifetime CN201655637U (en) | 2010-03-25 | 2010-03-25 | High-voltage isolation and grounding switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201655637U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903561A (en) * | 2012-10-24 | 2013-01-30 | 苏州工业园区天东电器有限公司 | Transmission connecting rod of disconnecting switch |
| CN103560059A (en) * | 2013-11-18 | 2014-02-05 | 北京双杰电气股份有限公司 | Fuse-wire tube assembly |
| RU2755722C1 (en) * | 2019-01-09 | 2021-09-20 | общество с ограниченной ответственностью "ЗЭТО-Газовые Технологии" | Single-pole high-current connector |
-
2010
- 2010-03-25 CN CN2010201410778U patent/CN201655637U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102903561A (en) * | 2012-10-24 | 2013-01-30 | 苏州工业园区天东电器有限公司 | Transmission connecting rod of disconnecting switch |
| CN103560059A (en) * | 2013-11-18 | 2014-02-05 | 北京双杰电气股份有限公司 | Fuse-wire tube assembly |
| RU2755722C1 (en) * | 2019-01-09 | 2021-09-20 | общество с ограниченной ответственностью "ЗЭТО-Газовые Технологии" | Single-pole high-current connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101124 |