CN104157474B - Stick and the insulator with this stick - Google Patents
Stick and the insulator with this stick Download PDFInfo
- Publication number
- CN104157474B CN104157474B CN201410440164.6A CN201410440164A CN104157474B CN 104157474 B CN104157474 B CN 104157474B CN 201410440164 A CN201410440164 A CN 201410440164A CN 104157474 B CN104157474 B CN 104157474B
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- Prior art keywords
- insulating tube
- insulator
- rod
- stick
- support
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- 239000012212 insulator Substances 0.000 title claims abstract description 40
- 206010044565 Tremor Diseases 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 abstract 6
- 239000011810 insulating material Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 244000145845 chattering Species 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Insulators (AREA)
- Position Input By Displaying (AREA)
- Switches With Compound Operations (AREA)
- Mechanical Control Devices (AREA)
Abstract
The open a kind of stick of the present invention, for insulator, this insulator includes insulation tube, this stick includes the body of rod, this stick is longitudinally disposed in this insulation tube and can move up and down, and this stick stage casing is fixed with support member, and this supports support is between this body of rod and inwall of this insulation tube.The invention also discloses a kind of insulator, including insulation tube, the stick that is disposed longitudinally in described insulation tube, this stick is any one above-mentioned stick.The stick of the present invention and the insulator with this stick, by stick stage casing securing supports, by the inwall of the above-mentioned insulation tube of this supports support, can be prevented effectively from this stick and bend when moving up and down or tremble.
Description
Technical Field
The invention relates to the field of power transmission equipment, in particular to a control lever and an insulator with the control lever.
Background
In power transmission equipment, an interrupting unit such as a circuit breaker or the like generally includes a lever that is disposed inside an insulating tube and is movable in a direction parallel to the longitudinal direction of the insulating tube. In practical applications, the joystick tends to bend or rattle as it moves up and down. To avoid this, a support is usually provided inside the insulating tube. However, how to arrange the supporting member inside the insulating tube is a problem to be solved urgently.
Disclosure of Invention
In view of the deficiencies of the prior art, it is an object of the present invention to provide a joystick that avoids bending or chattering when moving up and down.
In order to achieve the purpose, the technical means adopted by the invention are as follows: the utility model provides a control rod for the insulator, this insulator includes the insulating tube, and this control rod includes the body of rod, and this control rod vertically sets up and can reciprocate in this insulating tube, and this control rod middle section is fixed with support piece, and this support piece supports between the inner wall of this body of rod and this insulating tube.
Above-mentioned control rod through fixed above-mentioned support piece in the middle section, this support piece supports between the inner wall of above-mentioned insulating tube and the body of rod, and when the control rod reciprocated, this support piece can be through the constraint of this insulating tube and then make this control rod avoid taking place crooked or tremble.
Preferably, the support member is slidably disposed with respect to an inner wall of the insulating tube.
More preferably, the support member abuts against an inner wall of the insulating tube.
More preferably, the support member is provided with a gap from an inner wall of the insulating tube.
More preferably, the inner wall of the insulating tube is supported by the supporting member at positions having the same diameter at upper and lower portions thereof.
More preferably, the support member has a cylindrical shape, and a central axis of the support member coincides with a central axis of the rod body. More preferably, the support member is provided with a through hole in a longitudinal direction thereof, the through hole being capable of balancing air pressures at upper and lower sides of the support member in the insulating tube. More preferably, the side surface of the support member is provided with longitudinal stripes, which can reduce the friction force between the support member and the insulating tube when the support member moves longitudinally.
More preferably, the support member has at least two support surfaces in the circumferential direction. The support member reduces the contact area with the inner wall of the insulating tube and reduces the friction force.
More preferably, the supporting member has at least two supporting ribs arranged longitudinally in the circumferential direction. The contact area between the support piece and the inner wall of the insulating tube is smaller, and the friction force between the support piece and the inner wall of the insulating tube is greatly reduced.
More preferably, the support member includes at least two support pieces, the support pieces are parallel to the axis of the rod body, and the support pieces are uniformly distributed around the rod body. The support piece plays a supporting role through the support piece, the weight of the support piece is greatly reduced, and the influence of the weight of the support piece on the up-and-down movement of the operating lever is avoided.
Preferably, the edge of the support contacting the inner wall of the insulating tube is rounded.
Preferably, a portion of the inner wall of the insulating tube supported by the supporting member has a truncated cone shape. More preferably, the supporting member includes at least two layers from outside to inside in the radial direction, including an outermost layer and an innermost layer, the innermost layer is fixed on the rod body, the outermost layer is clamped and fixed on the inner wall of the insulating tube, and the two adjacent layers of the supporting member are connected in a relatively sliding manner. Such a support avoids the surface rubbing against the inner wall of the insulating tube, causing damage to the inner wall of the insulating tube.
Preferably, a roller is disposed at a portion of the support member contacting the inner wall of the insulating tube. The design of this gyro wheel can significantly reduce frictional force to can prevent that this support piece from causing the damage to the inner wall of this insulating tube. More preferably, the supporting member includes at least two sets of the rollers, the distance between the roller and the rod body is adjustable, and an elastic member is disposed between the roller and the rod body, and the elastic member enables the roller to abut against the inner wall of the insulating tube. The supporting piece can adapt to the condition that the inner walls of the insulating pipes of the cone-shaped insulators and the like are not of equal diameter.
In view of the deficiencies of the prior art, it is another object of the present invention to provide an insulator in which the operating rod does not bend or vibrate when moving up and down.
In order to achieve the purpose, the technical means adopted by the invention are as follows: an insulator comprises an insulating tube and a control rod longitudinally arranged in the insulating tube, wherein the control rod is any one of the control rods.
According to the control lever and the insulator with the control lever, the support piece is fixed at the middle section of the control lever, and the support piece supports the inner wall of the insulating pipe, so that the control lever can be effectively prevented from bending or shaking when moving up and down.
Drawings
FIG. 1 is a schematic, partially cross-sectional, perspective view of a portion of a joystick 100 inserted into an insulating tube 110 according to an embodiment of the present invention;
FIG. 2 is a schematic, partially cross-sectional, perspective view of a portion of a second joystick 200 of an embodiment of the present invention inserted into an insulating tube 210;
FIG. 3 is a partial sectional perspective view of a portion of a three-way joystick 300 inserted into an insulating tube 310 according to an embodiment of the present invention;
FIG. 4 is a partial cross-sectional perspective view of a four-bar linkage 400 inserted into an insulating tube 410 according to an embodiment of the present invention;
FIG. 5 is a schematic partial cross-sectional perspective view of a portion of a five-insulator 5000 according to an embodiment of the invention;
fig. 6 is a schematic partial cross-sectional perspective view of a partial structure of a six-insulator 6000 according to an embodiment of the invention;
FIG. 7 is a schematic partial cross-sectional perspective view of a partial structure of a seven insulator 7000 according to an embodiment of the present invention;
fig. 8 is a schematic front sectional view of a part of the structure of a seven insulator 7000 according to an embodiment of the present invention.
Wherein,
5000. 6000, 7000-insulator;
100. 200, 300, 400, 500, 600, 700 — joystick;
101. 201, 301, 401, 501, 601, 701 — rod body;
102. 202, 302, 402, 502, 602, 702 — a support;
10. 20, 30, 40-fillets;
21-contact surface; 31-contact ridge; 41-support sheet; 51. 61-roller;
12-a hole;
53. 63-support;
64-spring;
75-outermost layer;
76-innermost layer;
77-slide block;
78-chute;
79-stop;
110. 210, 310, 410, 510, 610, 710 — an insulating tube.
Detailed Description
As required, detailed embodiments of the present invention are disclosed herein. However, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed manner, including employing various features disclosed herein in combination with features that may not be explicitly disclosed herein.
The first embodiment is as follows:
as shown in fig. 1, a joystick 100 according to a first embodiment of the present invention includes a shaft 101 and a supporting member 102 fixed to a middle portion of the shaft 101. The operating rod 100 is used for an insulator (not shown) including an insulating tube 110.
The rod 101 is made of an insulating material.
The supporting member 102 is a cylinder, the central axis of the supporting member 102 coincides with the central axis of the rod body 101, and the outer diameter of the supporting member 102 is larger than the diameter of the rod body 101 and slightly smaller than the inner diameter of the insulating tube. The diameters of all parts of the inner wall of the insulating tube are equal. The corners of the support 102 are provided with rounded corners 10. The supporting member 102 is made of an insulating material. Six through holes 12 are longitudinally provided in the support 102.
The operating rod 100 of the embodiment is supported between the middle section of the rod body 101 and the inner wall of the insulating tube through the supporting piece 102, and when the operating rod 100 moves up and down, the supporting piece 102 slides along the inner wall of the insulating tube, so that the operating rod 100 is effectively prevented from bending or shaking. Due to the arrangement of the hole 12, the problem that the upper and lower ends of the supporting member 102 in the insulating tube obstruct the up-and-down movement of the operating lever 100 due to the air pressure can be avoided.
Example two:
as shown in fig. 2, a joystick 200 according to a second embodiment of the present invention includes a shaft 201 and a supporting member 202 fixed to a middle portion of the shaft 201. The joystick 200 is used for an insulator (not shown) comprising an insulating tube 210.
The rod 201 is made of an insulating material.
The supporting member 202 is a strip, and a central axis of the strip-shaped supporting member 202 coincides with a central axis of the rod body 201. Contact surfaces 21 are arranged at two ends of the strip shape, and fillets 20 are arranged at edges and corners above and below the contact surfaces 21. The contact surface 21 is an arc-shaped surface, and the arc-shaped contact surface 21 is matched with the inner wall of the insulating tube. The supporting member 202 is made of an insulating material.
The joystick 200 of the present embodiment has all the advantages of the joystick 100 of the first embodiment, and in addition, the joystick 200 of the present embodiment has a reduced contact area compared to the first embodiment because only two contact surfaces 21 of the supporting member 202 are in contact with the inner wall of the insulating tube, thereby reducing the resistance of the joystick 200 to move up and down.
Example three:
as shown in fig. 3, a joystick 300 according to a third embodiment of the present invention includes a shaft 301 and a supporting member 302 fixed to a middle portion of the shaft 301. The joystick 300 is used for an insulator (not shown) comprising an insulating tube 310.
The rod 301 is made of an insulating material.
The cross section of support piece 302 is the hexagon, and this hexagon is about longitudinal symmetry, and the center of this hexagon is located body of rod 301 on the axis, and the position at support piece 302 left and right sides both ends is provided with supports stupefied 31, supports stupefied 31 and is provided with fillet 30. The supporting member 302 is made of an insulating material.
The joystick 300 of this embodiment has all the advantages of the second embodiment of the present invention, and in addition, compared with the second embodiment, the contact area between the supporting member 302 and the inner wall of the insulating tube is further reduced, and the resistance of the joystick 300 to move up and down is reduced.
Example four:
as shown in fig. 4, the joystick 400 of the present embodiment includes a rod 401 and a supporting member 402 fixed at a middle portion of the rod 401. The joystick 400 is used for an insulator (not shown) that includes an insulating tube 410.
The rod 401 is made of an insulating material.
The support 402 includes three support sheets 41 extending outward and evenly arranged in the circumferential direction, the support sheets 41 are parallel to the central axis of the rod 401, the end of the support sheet 41 is provided with a fillet 40, and the end of the support sheet 41 abuts against the inner wall of the insulating tube. The support member 402 is made of an insulating material.
The joystick 400 of the present embodiment has all the advantages of the third embodiment, and in addition, because the support plate 41 is adopted for supporting, the weight of the support member 402 is reduced, and the joystick 400 is prevented from being influenced by the support member 402 when moving up and down.
Example five:
as shown in fig. 5, an insulator 5000 according to the fifth embodiment of the present invention includes an insulating tube 510, and a control rod 500 is longitudinally disposed in the middle of the insulating tube 510. The joystick 500 includes a shaft 501 and a support 502 fixed to a middle portion of the shaft 501.
The insulating tube 510 is a straight cylinder formed by winding glass fiber, and the diameters of the upper and lower parts of the inner wall of the insulating tube 510 are equal.
The rod 501 is made of an insulating material.
The support member 502 includes two sets of brackets 53 extending outward, the end of the bracket 53 is provided with a roller 51, the central axis of the roller 51 is perpendicular to the central axis of the rod body 501, the contact surface of the roller 51 and the inner wall of the insulating tube 510 is adapted to the inner wall of the insulating tube 510, and the roller 51 abuts against the inner wall of the insulating tube 510 and can roll up and down along the inner wall of the insulating tube 510.
The insulator 5000 of the present embodiment is supported on the inner wall of the insulating tube 510 by the supporting member 502 fixed to the rod 501, and can effectively prevent the bending or vibration of the operating lever 500 when the operating lever 500 moves up and down. When the operating rod 500 moves up and down, the roller 51 at the end of the supporting member 502 rolls up and down along the inner wall of the insulating tube 510, and the damage of the supporting member 502 to the inner wall of the insulating tube 510 can be avoided by adopting a rolling mode.
Example six:
as shown in fig. 6, an insulator 6000 according to a sixth embodiment of the present invention includes an insulating tube 610, and a control rod 600 is disposed in the insulating tube 610 in a longitudinal direction. The joystick 600 includes a shaft 601 and a support 602 fixed to a middle portion of the shaft 601.
The insulating tube 610 is a tapered tube formed by winding glass fibers and is applied to a tapered insulator, and the inner wall of the insulating tube 610 is large in top and small in bottom.
The rod 601 is made of an insulating material.
The supporting member 602 includes two sets of brackets 63 extending outward, the bracket 63 can change an included angle with the rod 601 through rotation, a spring 64 is further disposed on the bracket 63, and the spring 64 makes a clamp between the bracket 63 and the rod 601 tend to increase. The tail end of the support 63 is provided with a roller 61, and the central axis of the roller 61 is perpendicular to the central axis of the rod body 601. The roller 61 abuts against the inner wall of the insulating tube 610 by the spring 64 and can roll up and down along the inner wall of the insulating tube 610.
The insulator 6000 of the present embodiment has all the advantages of the insulator 5000 of the fifth embodiment of the present invention, and the operating rod 600 of the present embodiment is suitable for a non-straight-tube type insulator such as a cone insulator.
Example seven:
as shown in fig. 7 and 8, an insulator 7000 according to a seventh embodiment of the present invention includes an insulating tube 710, and a control rod 700 is disposed in the insulating tube 710 in a longitudinal direction. The joystick 700 includes a body 701 and a support 702 fixed to a middle portion of the body 701.
The insulating tube 710 and the rod body 701 are respectively the same as the insulating tube 610 and the rod body 601 of the sixth embodiment of the present invention.
The support 702 is approximately truncated cone shaped. The supporting member 702 is divided into five layers from outside to inside, wherein the radian and the inclination of the outer side surface of the outermost layer 75 are consistent with those of the inner wall at the middle section of the insulating tube 710, and the outermost layer 75 is clamped and fixed at the middle section of the inner wall of the insulating tube 710. The innermost layer 76 is fixed to the middle section of the rod body 701. The two adjacent layers of the supporting member 702 are respectively provided with a sliding block 77 and a sliding groove 78 which are matched with each other, the sliding block 77 can slide in the sliding groove 78, and the inner layers of the two adjacent layers can slide downwards along the inner wall of the outer layer by the sliding block 77 sliding in the sliding groove 78. Except for the outermost layer 75, the bottom of each layer is provided with a stopping part 79, and the stopping parts 79 can prevent the inner layer from sliding upwards out of the adjacent outer layer and separating from the adjacent outer layer.
The insulator 7000 of the present embodiment is suitable for a cone insulator, and has all the advantages of the insulator 5000 of the fifth embodiment of the present invention.
Although the embodiment of the present invention only describes the case where the joystick is applied to the composite insulator, it should be noted that, according to the description of the embodiment of the present invention, it is naturally conceivable that the joystick of the present invention may also be applied to a porcelain insulator or an insulator made of other materials.
While the invention has been described with reference to the above disclosure and features, it will be understood by those skilled in the art that various changes and modifications in the above constructions and materials can be made, including combinations of features disclosed herein either individually or in any combination, as appropriate, without departing from the spirit of the invention. Such variations and/or combinations are within the skill of the art to which the invention pertains and are within the scope of the following claims.
Claims (3)
1. The utility model provides a control rod, is used for the insulator, the insulator includes the insulating tube, the control rod includes the body of rod, the control rod vertically set up in the insulating tube and can reciprocate, the control rod middle section is fixed with support piece, support piece support in the body of rod with between the inner wall of insulating tube, its characterized in that: the inner wall of the insulating pipe is supported by the supporting piece in a round table shape, the supporting piece at least comprises two layers from outside to inside in the radial direction, the two layers comprise an outermost layer and an innermost layer, the innermost layer is fixed on the rod body, the outermost layer is clamped and fixed on the inner wall of the insulating pipe, and the two adjacent layers of the supporting piece are connected in a sliding mode.
2. The joystick of claim 1, wherein: the central axis of the support member coincides with the central axis of the rod body.
3. An insulator, includes insulating tube, vertically sets up the control rod in the insulating tube, its characterized in that: the joystick of any one of claims 1-2.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440164.6A CN104157474B (en) | 2014-09-01 | 2014-09-01 | Stick and the insulator with this stick |
| PCT/CN2015/088751 WO2016034102A1 (en) | 2014-09-01 | 2015-09-01 | Guiding apparatus and insulator with control lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440164.6A CN104157474B (en) | 2014-09-01 | 2014-09-01 | Stick and the insulator with this stick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104157474A CN104157474A (en) | 2014-11-19 |
| CN104157474B true CN104157474B (en) | 2016-11-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410440164.6A Active CN104157474B (en) | 2014-09-01 | 2014-09-01 | Stick and the insulator with this stick |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104157474B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229095B (en) * | 2016-08-31 | 2017-07-28 | 国网山东省电力公司莒南县供电公司 | Transmission tower insulator |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6196416U (en) * | 1984-11-29 | 1986-06-20 | ||
| CN86101866A (en) * | 1985-06-18 | 1986-12-17 | 三菱电机株式会社 | Insulator gas breaker |
| CN201708082U (en) * | 2010-07-06 | 2011-01-12 | 沈阳华利能源设备制造有限公司 | High-voltage link insulator |
| CN201766020U (en) * | 2010-09-13 | 2011-03-16 | 无锡市蓝虹电子有限公司 | Intelligent rapid closing switch |
| CN102414769A (en) * | 2009-04-29 | 2012-04-11 | Abb技术有限公司 | A support bracket |
| CN102610338A (en) * | 2012-03-28 | 2012-07-25 | 山西省电力公司晋城供电分公司 | Connecting device for composite insulator of overhead power transmission line |
| CN203631196U (en) * | 2013-12-03 | 2014-06-04 | 国家电网公司 | Device for fixing composite-insulator core rod of overhead transmission line |
| CN204045421U (en) * | 2014-09-01 | 2014-12-24 | 江苏神马电力股份有限公司 | Joystick and the insulator with this joystick |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2654753C2 (en) * | 1976-12-03 | 1993-11-18 | Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt | Switching rod arrangement for a high-voltage circuit breaker |
| FR2462012A1 (en) * | 1979-07-16 | 1981-02-06 | Alsthom Cgee | DEVICE FOR HANDLING A CIRCUIT BREAKER |
| FR2553927B1 (en) * | 1983-10-24 | 1986-01-24 | Merlin Gerin | DEVICE FOR GUIDING THE ROD OF A HIGH VOLTAGE CIRCUIT BREAKER |
| JPH0425608A (en) * | 1990-05-17 | 1992-01-29 | Hitachi Cable Ltd | Operation force transmitting flexible cable |
| JPH06131934A (en) * | 1992-10-15 | 1994-05-13 | Nippon Cement Co Ltd | Insulator |
| CN102254644A (en) * | 2010-05-18 | 2011-11-23 | 江苏神马电力股份有限公司 | Conical composite insulator |
-
2014
- 2014-09-01 CN CN201410440164.6A patent/CN104157474B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6196416U (en) * | 1984-11-29 | 1986-06-20 | ||
| CN86101866A (en) * | 1985-06-18 | 1986-12-17 | 三菱电机株式会社 | Insulator gas breaker |
| CN102414769A (en) * | 2009-04-29 | 2012-04-11 | Abb技术有限公司 | A support bracket |
| CN201708082U (en) * | 2010-07-06 | 2011-01-12 | 沈阳华利能源设备制造有限公司 | High-voltage link insulator |
| CN201766020U (en) * | 2010-09-13 | 2011-03-16 | 无锡市蓝虹电子有限公司 | Intelligent rapid closing switch |
| CN102610338A (en) * | 2012-03-28 | 2012-07-25 | 山西省电力公司晋城供电分公司 | Connecting device for composite insulator of overhead power transmission line |
| CN203631196U (en) * | 2013-12-03 | 2014-06-04 | 国家电网公司 | Device for fixing composite-insulator core rod of overhead transmission line |
| CN204045421U (en) * | 2014-09-01 | 2014-12-24 | 江苏神马电力股份有限公司 | Joystick and the insulator with this joystick |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104157474A (en) | 2014-11-19 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |