CN111430089B - Perpendicular two strain insulator string that hang some pair and hang and establish device - Google Patents
Perpendicular two strain insulator string that hang some pair and hang and establish device Download PDFInfo
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- CN111430089B CN111430089B CN202010070894.7A CN202010070894A CN111430089B CN 111430089 B CN111430089 B CN 111430089B CN 202010070894 A CN202010070894 A CN 202010070894A CN 111430089 B CN111430089 B CN 111430089B
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- insulator string
- rod
- connecting plate
- supporting
- hanging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/02—Suspension insulators; Strain insulators
- H01B17/06—Fastening of insulator to support, to conductor, or to adjoining insulator
- H01B17/08—Fastening of insulator to support, to conductor, or to adjoining insulator by cap-and-bolt
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/38—Fittings, e.g. caps; Fastenings therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
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Abstract
The invention relates to an electric power fitting, in particular to a strain insulator string hanging device with vertical double hanging points and double connection. The utility model provides a strain insulator string of perpendicular two string point pairs is hung and is established device, includes cross arm, first insulator string and second insulator string, is fixed with the connecting plate on the cross arm, and the one end of first insulator string and second insulator string is fixed on the connecting plate, and the other end and the wire fixed connection of first insulator string and second insulator string are provided with auxiliary device on the connecting plate. The insulator string can be arranged at the hanging point of the cross arm of the tower in a double-hanging-point mode, and the insulator string is good in stability and high in safety.
Description
Technical Field
The invention relates to an electric power fitting, in particular to a strain insulator string hanging device with vertical double hanging points and double connection.
Background
At present, most of tension towers with double split conductors are usually hung on a cross arm of a tower by a single hanging point, and two insulator strings are horizontally arranged to connect the conductors.
The existing single hanging point horizontal duplex tension insulator string connecting method has potential safety hazards. Once a problem occurs in a single hanging point, the wire in the first gear cannot be pulled, so that the wire and the insulator string fall into an important three-span section below, serious influence is caused, and safety is low.
"triple span" definition: refers to an overhead transmission line section spanning a high-speed railway, a highway and an important transmission channel.
For example, Chinese patent publication numbers are: CN205723014U, in a single string of some strain insulator-string of 2016 bulletin 11 month 23, its technical scheme main points are including U type link, extension ring, U type link, yoke plate, Z type string knot, bulb link, insulator cluster group, socket string knot, yoke plate, Z type link plate, parallel link plate, wedge strain clamp, the yoke plate is hung with the Z type and is buckled through bolted connection, the Z type is hung the knot and is equipped with the limit structure with the yoke plate butt, the socket is hung the knot and is passed through bolted connection with the yoke plate, the socket is hung the knot and is equipped with the limit structure with the yoke plate butt. Under each limit structure's effect, the Z type is hung to detain and link plate and bowl head and all be fixed connection with the link plate, cooperation insulator string group forms a stable rectangular structure, thereby avoid insulator string to produce the small-angle torsion under being unfavorable for the operating mode, be favorable to maintaining the joint strength of plug and tip gold utensil, but single string point in case the problem appears, wire in the grade will unable to be withheld, thereby can lead to the wire to drop in the important three-span district section of below together with insulator string, will cause serious influence, the security is low.
Disclosure of Invention
The invention mainly aims to solve the problems that once a problem occurs in the existing single hanging point, the wire in the first gear cannot be pulled, so that the wire and an insulator string fall into an important three-span section below, serious influence is caused, and safety is low.
The purpose of the invention is mainly realized by the following scheme: a vertical double-hanging-point duplex strain insulator string hanging device comprises a cross arm, a first insulator string and a second insulator string, wherein a connecting plate is fixed on the cross arm, the cross section of the connecting plate is L-shaped, one ends of the first insulator string and the second insulator string are fixed on the connecting plate, the other ends of the first insulator string and the second insulator string are fixedly connected with a lead, an auxiliary device is arranged on the connecting plate and comprises a supporting shell fixed on the connecting plate, a hollow cavity is arranged in the supporting shell, supporting rods in sliding connection with the side wall of the hollow cavity are symmetrically distributed on the left side and the right side of the hollow cavity, a supporting hook body used for supporting the first insulator string or the second insulator string is arranged at one end of each supporting rod after penetrating through the supporting shell, and a sliding block is arranged at one end of each supporting rod, which is far away from the supporting hook body, the slider on be provided with the translation pole, the bracing piece in correspond the translation pole and be provided with horizontal cavity, the one end of keeping away from the slider of translation pole be provided with horizontal cavity's lateral wall sliding connection's translation piston, horizontal cavity on be provided with vertical cavity, vertical cavity sliding connection have spacing piston, spacing piston on be connected with and be used for supporting the gag lever post on corresponding bracing piece. The cross arm is fixed with a connecting plate, the cross section of the connecting plate is L-shaped, the mounting of the connecting plate is convenient, one end of the first insulator string and one end of the second insulator string are fixed on the connecting plate, the other end of the first insulator string and the other end of the second insulator string are fixedly connected with a lead, the structure is simple, the processing and connection are simple and convenient, the tensile force can be shared, and the backup protection effect can be realized, the connecting plate is provided with an auxiliary device, the auxiliary device comprises a supporting shell fixed on the connecting plate, a hollow cavity is arranged in the supporting shell, supporting rods in sliding connection with the side walls of the hollow cavity are symmetrically distributed on the left side and the right side of the hollow cavity, a supporting hook body used for supporting the first insulator string or the second insulator string is arranged at one end of the supporting rod after penetrating through the supporting shell, the supporting hook body is in a circular arc shape matched with the shapes of the first insulator string and the second insulator string, and a sliding block is arranged at one end of the supporting hook body, the sliding block is provided with a translation rod, a horizontal cavity is arranged in the support shell corresponding to the translation rod, one end of the translation rod, far away from the sliding block, is provided with a translation piston which is in sliding connection with the side wall of the horizontal cavity, the horizontal cavity is provided with a vertical cavity, the vertical cavity is internally provided with a limiting piston, the limiting piston is connected with a limiting rod which is used for abutting against a corresponding supporting rod, a worker sequentially mounts and connects each device, when one hanging point is broken, the insulator string connected with the insulator string drives the support hook body and the supporting rod to move in the direction far away from the other insulator string, the supporting rod drives the sliding block to move together when moving, so that the sliding block drives the translation rod and the translation piston to move, when the translation piston moves, the translation piston can drive gas in the horizontal cavity to compress and move in the direction of the vertical cavity, and the gas can play a certain buffering role in the process, prevent auxiliary device atress suddenly and breaking occur, compressed gas can drive spacing piston and remove, thereby make spacing piston can drive the gag lever post and support on the bracing piece and the removal of restriction bracing piece, when the bracing piece is more toward keeping away from when supporting housing direction removes, thereby gaseous thrust that the gag lever post received is more than can tightly support on the bracing piece more, prevent that the insulator chain of this fracture department from taking place great displacement, make even be afraid of that one of them hangs the point and take place the fracture, also can guarantee certain stability under auxiliary device's effect, the security is high.
Preferably, the first insulator string and the second insulator string are connected with the lead through a connecting plate. The first insulator string and the second insulator string are connected with the lead through the connecting plate, so that the installation is simple and the connection is firm.
Preferably, the support housing is fixed to the connecting plate by fastening bolts. The supporting shell is fixed on the connecting plate through a fastening bolt, and the connection is very stable.
Preferably, the connecting plate is fixed on the cross arm through a positioning bolt. The connecting plate passes through positioning bolt to be fixed on the cross arm, and the installation is convenient and firm.
Preferably, a buffer spring is arranged between the sliding block and the corresponding limiting rod. And a buffer spring is arranged between the sliding block and the corresponding limiting rod, and the buffer spring can buffer the energy of part of the insulator string when the insulator string falls off, so that the stability of the whole device is improved.
Preferably, one end of the translation piston, which is far away from the translation rod, is provided with a guard rod for limiting the maximum displacement of the translation piston. One end of the translation piston, which is far away from the translation rod, is provided with a protection rod for limiting the maximum displacement of the translation piston, and the maximum displacement of the translation piston is limited by the protection rod, so that the air pressure in the horizontal cavity cannot explode due to overhigh pressure, and the safety is improved.
Preferably, one end of the limiting rod, which is far away from the limiting piston, is provided with a limiting block. The one end of gag lever post that keeps away from spacing piston is provided with the stopper, and the area of stopper should be greater than the area of gag lever post to the frictional force to the bracing piece when having increased the gag lever post and supporting on the bracing piece.
Preferably, the limiting block is made of rubber materials. The stopper is made by rubber materials, and rubber materials has elasticity, can warp, can increase when receiving pressure and the bracing piece between frictional force to improve stability.
Therefore, the strain insulator string hanging device with the vertical double hanging points and the double connection has the following advantages: the insulator string mounting device is simple in structure, convenient to process and connect, firm to mount, good in stability and high in safety, and the insulator string can be mounted at the hanging point of the cross arm of the tower in a double-hanging-point mode.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view of the auxiliary device of the present invention.
Illustration of the drawings: 1-cross arm, 2-fastening bolt, 3-connecting plate, 4-positioning bolt, 5-first insulator string, 6-second insulator string, 7-auxiliary device, 8-supporting hook body, 9-connecting plate, 10-lead, 11-supporting rod, 12-supporting shell, 13-hollow cavity, 14-translation rod, 15-translation piston, 16-horizontal cavity, 17-guard rod, 18-limiting piston, 19-vertical cavity, 20-limiting rod, 21-limiting block, 22-buffer spring and 23-sliding block.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1:
as shown in fig. 1 and 2, a vertical dual-hanging-point dual-connection tension insulator string hanging device comprises a cross arm 1, a first insulator string 5 and a second insulator string 6, wherein a connecting plate 3 is fixed on the cross arm 1, the cross section of the connecting plate 3 is in an L shape, the connecting plate 3 is convenient to install, one ends of the first insulator string 5 and the second insulator string 6 are fixed on the connecting plate 3, the other ends of the first insulator string 5 and the second insulator string 6 are fixedly connected with a lead 10, the structure is simple, the processing and connection are simple and convenient, the tension can be shared, and the backup protection effect can be achieved, an auxiliary device 7 is arranged on the connecting plate 3, the auxiliary device 7 comprises a supporting shell 12 fixed on the connecting plate 3, a hollow cavity 13 is arranged in the supporting shell 12, supporting rods 11 which are in sliding connection with the side walls of the hollow cavity 13 are symmetrically distributed on the left side and the right side of the hollow cavity 13, one end of each supporting rod 11 penetrates through the supporting shell 12 and is provided with a supporting rod for the first insulator string 5 or the second insulator string 6 The supporting hook body 8 is supported, the supporting hook body 8 is arc-shaped matched with the shapes of the first insulator string 5 and the second insulator string 6, a sliding block 23 is arranged at one end of the supporting rod 11 far away from the supporting hook body 8, a translation rod 14 is arranged on the sliding block 23, a horizontal cavity 16 is arranged in the supporting shell 12 corresponding to the translation rod 14, a translation piston 15 in sliding connection with the side wall of the horizontal cavity 16 is arranged at one end of the translation rod 14 far away from the sliding block 23, a vertical cavity 19 is arranged on the horizontal cavity 16, a limiting piston 18 is in sliding connection with the vertical cavity 19, a limiting rod 20 used for abutting against the corresponding supporting rod 11 is connected to the limiting piston 18, a worker can sequentially mount and connect all devices, when one hanging point is broken, the insulator string connected with the insulator string can drive the supporting hook body 8 and the supporting rod 11 to move in the direction far away from the other insulator string together, the supporting rod 11 can drive the sliding block 23 to move together when moving, so that the sliding block 23 drives the translation rod 14 and the translation piston 15 to move, when the translation piston 15 moves, the gas in the horizontal cavity 16 can be driven to compress and move towards the vertical cavity 19, in the process, the gas can play a certain buffering role, the auxiliary device 7 is prevented from being broken due to sudden stress, the compressed gas can drive the limiting piston 18 to move, so that the limiting piston 18 can drive the limiting rod 20 to abut against the supporting rod 11 and limit the movement of the supporting rod 11, when the supporting rod 11 moves towards the direction far away from the supporting shell 12, the larger the thrust of the gas borne by the limiting rod 20 is, the more tightly the gas can abut against the supporting rod 11, the insulator string at the broken position is prevented from generating larger displacement, so that even one hanging point is broken, a certain stability can be ensured under the action of the auxiliary device 7, the safety is high.
The first insulator string 5 and the second insulator string 6 are connected with the lead 10 through the connecting plate 9, so that the installation is simple and the connection is firm.
The support shell 12 is fixed on the connecting plate 3 through the fastening bolt 2, and the connecting plate 3 is fixed on the cross arm 1 through the positioning bolt 4, so that the installation is convenient and firm.
And a buffer spring 22 is arranged between the sliding block 23 and the corresponding limiting rod 20, and the energy generated when part of the insulator string falls off can be buffered by the buffer spring 22, so that the stability of the whole device is improved.
One end of the translation piston 15, which is far away from the translation rod 14, is provided with a guard rod 17 for limiting the maximum displacement of the translation piston 15, and the guard rod 17 limits the maximum displacement of the translation piston 15, so that the air pressure in the horizontal cavity 16 cannot explode due to overhigh pressure, and the safety is improved.
The end of the limiting rod 20 far away from the limiting piston 18 is provided with a limiting block 21, and the area of the limiting block 21 should be larger than that of the limiting rod 20, so that the friction force to the supporting rod 11 when the limiting rod 20 abuts against the supporting rod 11 is increased.
The limiting block 21 is made of a rubber material, and the rubber material has elasticity and can deform, so that the friction force between the limiting block and the supporting rod 11 can be increased when the limiting block is under pressure, and the stability is improved.
It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. A vertical double-hanging-point duplex strain insulator string hanging device comprises a cross arm, a first insulator string and a second insulator string, and is characterized in that a connecting plate is fixed on the cross arm, the cross section of the connecting plate is L-shaped, one ends of the first insulator string and the second insulator string are fixed on the connecting plate, the other ends of the first insulator string and the second insulator string are fixedly connected with a lead, an auxiliary device is arranged on the connecting plate and comprises a supporting shell fixed on the connecting plate, a hollow cavity is arranged in the supporting shell, supporting rods in sliding connection with the side wall of the hollow cavity are symmetrically distributed on the left side and the right side of the hollow cavity, and a supporting hook body for supporting the first insulator string or the second insulator string is arranged at one end of each supporting rod after penetrating through the supporting shell, the supporting rod is characterized in that a sliding block is arranged at one end, away from the supporting hook body, of the supporting rod, a translation rod is arranged on the sliding block, a horizontal cavity is formed in the supporting shell and corresponds to the translation rod, a translation piston which is connected with the side wall of the horizontal cavity in a sliding mode is arranged at one end, away from the sliding block, of the translation rod, a vertical cavity is arranged on the horizontal cavity, a limiting piston is connected in the vertical cavity in a sliding mode, and the limiting piston is connected with a limiting rod which is used for abutting against the corresponding supporting rod.
2. The vertical double hanging point duplex strain insulator string hanging device as claimed in claim 1, wherein the first insulator string and the second insulator string are connected with a lead through a connecting plate.
3. The vertical double hanging point duplex strain insulator string hanging device as claimed in claim 1, wherein the support housing is fixed on the connecting plate by fastening bolts.
4. The device for hanging the vertical double-hanging-point duplex strain insulator string as claimed in claim 1, 2 or 3, wherein the connecting plate is fixed on the cross arm by a positioning bolt.
5. The vertical double hanging point duplex strain insulator string hanging device as claimed in claim 1, 2 or 3, wherein a buffer spring is arranged between the sliding block and the corresponding limiting rod.
6. The vertical double hanging point duplex strain insulator string hanging device as claimed in claim 1, 2 or 3, wherein one end of the translation piston, which is far away from the translation rod, is provided with a guard rod for limiting the maximum displacement of the translation piston.
7. The vertical double hanging point duplex strain insulator string hanging device as claimed in claim 1, 2 or 3, wherein a limiting block is arranged at one end of the limiting rod away from the limiting piston.
8. The vertical double hanging point duplex strain insulator string hanging device as claimed in claim 7, wherein the limiting block is made of rubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070894.7A CN111430089B (en) | 2020-01-21 | 2020-01-21 | Perpendicular two strain insulator string that hang some pair and hang and establish device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010070894.7A CN111430089B (en) | 2020-01-21 | 2020-01-21 | Perpendicular two strain insulator string that hang some pair and hang and establish device |
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| Publication Number | Publication Date |
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| CN111430089A CN111430089A (en) | 2020-07-17 |
| CN111430089B true CN111430089B (en) | 2021-11-09 |
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| CN202010070894.7A Active CN111430089B (en) | 2020-01-21 | 2020-01-21 | Perpendicular two strain insulator string that hang some pair and hang and establish device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113517099B (en) * | 2021-08-31 | 2022-10-04 | 固力发电气有限公司 | Ultrahigh-voltage composite cross arm insulator with multipurpose end fitting |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB902408A (en) * | 1957-12-13 | 1962-08-01 | British Insulated Callenders | Improvements in or relating to equipment for electric traction systems |
| US4053706A (en) * | 1976-06-18 | 1977-10-11 | Slater Steel Industries Limited | Suspension bracket and apparatus |
| JP2000059936A (en) * | 1998-08-10 | 2000-02-25 | Chubu Electric Power Co Inc | Insulator replacing device for two-string strain- insulator apparatus |
| CN203983912U (en) * | 2014-07-24 | 2014-12-03 | 中国电力工程顾问集团西南电力设计院 | Two division strain insulator-strings for the above ultra-high-tension power transmission line of a kind of 500kV |
| CN104240866A (en) * | 2014-09-22 | 2014-12-24 | 国家电网公司 | Anti-dance double-divided-conductor composite insulator strain insulator string |
| JP2016149829A (en) * | 2015-02-10 | 2016-08-18 | 中国電力株式会社 | Power line seismic isolator |
| CN206961693U (en) * | 2017-07-11 | 2018-02-02 | 高明 | A kind of power transformation operation disconnecting switch control device |
| CN208753834U (en) * | 2018-10-10 | 2019-04-16 | 国网宁夏电力有限公司 | ± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument |
| CN208849347U (en) * | 2018-11-19 | 2019-05-10 | 国网四川省电力公司检修公司 | A kind of antiskid cord holder for replacing extra-high voltage insulator |
| CN209001541U (en) * | 2018-09-17 | 2019-06-18 | 国网浙江乐清市供电有限公司 | A kind of insulator chain suspension clamp that tensile property is good |
-
2020
- 2020-01-21 CN CN202010070894.7A patent/CN111430089B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB902408A (en) * | 1957-12-13 | 1962-08-01 | British Insulated Callenders | Improvements in or relating to equipment for electric traction systems |
| US4053706A (en) * | 1976-06-18 | 1977-10-11 | Slater Steel Industries Limited | Suspension bracket and apparatus |
| JP2000059936A (en) * | 1998-08-10 | 2000-02-25 | Chubu Electric Power Co Inc | Insulator replacing device for two-string strain- insulator apparatus |
| CN203983912U (en) * | 2014-07-24 | 2014-12-03 | 中国电力工程顾问集团西南电力设计院 | Two division strain insulator-strings for the above ultra-high-tension power transmission line of a kind of 500kV |
| CN104240866A (en) * | 2014-09-22 | 2014-12-24 | 国家电网公司 | Anti-dance double-divided-conductor composite insulator strain insulator string |
| JP2016149829A (en) * | 2015-02-10 | 2016-08-18 | 中国電力株式会社 | Power line seismic isolator |
| CN206961693U (en) * | 2017-07-11 | 2018-02-02 | 高明 | A kind of power transformation operation disconnecting switch control device |
| CN209001541U (en) * | 2018-09-17 | 2019-06-18 | 国网浙江乐清市供电有限公司 | A kind of insulator chain suspension clamp that tensile property is good |
| CN208753834U (en) * | 2018-10-10 | 2019-04-16 | 国网宁夏电力有限公司 | ± 1100kV DC power transmission line replaces strain insulator-string overhang insulation sub- instrument |
| CN208849347U (en) * | 2018-11-19 | 2019-05-10 | 国网四川省电力公司检修公司 | A kind of antiskid cord holder for replacing extra-high voltage insulator |
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| CN111430089A (en) | 2020-07-17 |
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