CN107425474B - Device for replacing tension insulator - Google Patents
Device for replacing tension insulator Download PDFInfo
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- CN107425474B CN107425474B CN201710722545.7A CN201710722545A CN107425474B CN 107425474 B CN107425474 B CN 107425474B CN 201710722545 A CN201710722545 A CN 201710722545A CN 107425474 B CN107425474 B CN 107425474B
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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Abstract
The invention discloses a device for replacing a tension insulator, which comprises an airfoil fixture for replacing a tension insulator string and a closed fixture for replacing a single tension insulator, wherein the airfoil fixture comprises a cross arm end clamp which is installed and connected with a traction plate at the cross arm end of the replaced tension insulator string and a wire end clamp which is installed and connected with a wire end parallel hanging plate of the replaced tension insulator string, the cross arm end clamp and the wire end clamp are of double-wing structures, and corresponding wings of the cross arm end clamp and the wire end clamp are connected through telescopic mechanisms respectively. According to the invention, the strain insulator string, the single strain insulator, the first strain insulator at the cross arm end and the first strain insulator at the lead end are replaced as a whole tool, so that the operation is safe, the working intensity of operators is reduced, and the tool is convenient to transport and store.
Description
Technical Field
The invention belongs to the technical field of power transmission line overhaul, and particularly relates to a device for replacing a tension insulator.
Background
The replacement of the strain insulator string and the single-piece strain insulator is a common operation of line maintenance, and tools for replacing the strain insulator string, the single-piece strain insulator, the first strain insulator at the cross arm end and the first strain insulator at the wire end are separated for a long time.
One of the disadvantages of this approach is that the tools for replacing the string and single piece strain insulator are very cumbersome, which can lead to a lot of cumbersome work for the transportation, storage and handling of the tools. The working strength of an operator for replacing the strain insulator string and the single strain insulator is increased. Secondly, when the single-piece tension insulator, the first tension insulator at the cross arm end and the first tension insulator at the lead end are replaced, no secondary protection mechanism is arranged, and hidden danger is brought to maintenance operation safety. Thirdly, the bottle supporting frame used for replacing the strain insulator string is long in length, heavy and incapable of being folded, and great inconvenience is brought to maintenance operation.
Disclosure of Invention
The invention provides a device for replacing a tension insulator, which integrates the replacement of a tension insulator string, a single tension insulator, a first tension insulator at a cross arm end and a first tension insulator at a wire end into a whole tool, so that the operation is safe, the working intensity of operators is reduced, and the tool is convenient to transport and store.
In order to solve the technical problems, the invention adopts the following technical scheme: the device for replacing the tension insulator comprises an airfoil fixture for replacing the tension insulator string and a closed fixture for replacing a single tension insulator, wherein the airfoil fixture comprises a cross arm end clamp which is installed and connected with a traction plate at the cross arm end of the replaced tension insulator string and a wire end clamp which is installed and connected with a wire end parallel hanging plate of the replaced tension insulator string, the cross arm end clamp and the wire end clamp are of double-wing structures, and corresponding wings of the cross arm end clamp and the wire end clamp are connected through telescopic mechanisms respectively;
the closed clamp comprises a closed clamp front clamp and/or a closed clamp rear clamp and two closed clamp lead screws which are arranged side by side;
the positions of the cross arm end clamps, which correspond to the closed clamp screw rods, are respectively provided with a cross arm end clamp joint; the lead end clamps are respectively provided with a lead end clamp joint at the positions corresponding to the closed clamp lead screws;
the front end of the closed clamping screw rod is connected with a corresponding closed clamping front clamp or cross arm end clamp connector; the rear end of the closed clamping screw rod is connected with a corresponding closed clamping rear clamp or lead end clamping connector.
The telescopic mechanism comprises an airfoil clamping screw rod and a pulling plate, the front end of the airfoil clamping screw rod is connected with the corresponding wing of the cross arm end clamp through a reversing joint, the rear end of the airfoil clamping screw rod is connected with the front end of the pulling plate through a reversing joint, and the rear end of the pulling plate is connected with the corresponding wing of the lead end clamp through a reversing joint.
The front end of the closed clamping screw rod is connected with a corresponding closed clamping front clamp or cross arm end clamp connector through a reversing connector; the rear end of the closed clamping screw rod is connected with a corresponding closed clamping rear clamp or lead end clamping connector through a reversing connector.
The wing-shaped clamping screw rod is a hydraulic screw rod.
The support mechanism comprises an elbow and support joints arranged at two ends of the elbow and used for being connected with the pull plates, the support joints comprise mounting seats fixedly connected with the ends of the corresponding elbow, clamping grooves used for penetrating the pull plates are formed in the mounting seats, and sealing screws are arranged at the clamping groove openings.
The bent pipe is of a V-shaped structure with an upward opening.
The invention has the beneficial effects that:
according to the invention, the strain insulator string, the single strain insulator, the first strain insulator at the cross arm end and the first strain insulator at the lead end are replaced as a whole tool, so that the operation is safe, the working intensity of operators is reduced, and the tool is convenient to transport and store.
The invention comprises four working states through the technical scheme:
the first is for replacing the string of tension insulators, at which time the wing clamp operates alone. During operation, the cross arm end clamps are connected with the replaced tension insulator string cross arm end traction plates in a mounted mode, the lead end clamps are connected with the replaced tension insulator string lead end parallel hanging plates in a mounted mode, the wing-shaped clamp is controlled to retract through the wing-shaped clamp lead screw, loosening of the tension insulator string is achieved, and replacement of the tension insulator string is further completed.
The second type is used for replacing the single-sheet tension insulator, at the moment, the front end of the closed clamping screw rod is connected with the corresponding closed clamping front clamp, the rear end of the closed clamping screw rod is connected with the corresponding closed clamping rear clamp, and the closed clamping device and the wing-shaped clamping device are movably matched for operation. During operation, the tension insulator string is loosened through the wing-shaped clamp, then the closed clamp is clamped with two adjacent tension insulators before and after the replaced tension insulator, and then the replaced tension insulator is loosened through the contraction of the closed clamp screw rod, so that the replacement of the single tension insulator is completed.
The third kind is used for changing the first piece of strain insulator of cross arm end promptly, and the front end and the corresponding cross arm end joint of closed card lead screw are connected this moment, and the rear end and the corresponding closed card back card of closed card lead screw are connected, and the card does not participate in the operation before the closed card, and closed fixture and wing section fixture connection formula cooperation operation. During operation, the tension insulator string is loosened through the wing-shaped clamp, at the moment, because the front side of the first tension insulator at the cross arm end is not provided with the adjacent tension insulators, the front end of the closed clamping screw is connected with the clamping connector at the cross arm end, the clamping connector is clamped with the adjacent tension insulators at the rear side of the replaced tension insulator after the closed clamping, and then the loosening of the replaced tension insulators is realized through the shrinkage of the closed clamping screw, so that the replacement of the first tension insulator at the cross arm end is completed.
The fourth type is used for replacing the first tension insulator of the lead end, at the moment, the front end of the closed clamping screw is connected with the corresponding front clamp of the closed clamping screw, the rear end of the closed clamping screw is connected with the corresponding lead end clamping connector, the rear clamp of the closed clamping screw does not participate in operation, and the closed clamp and the wing-shaped clamp are connected to cooperate with each other. During operation, the tension insulator string is loosened through the wing-shaped clamp, at the moment, because the rear side of the first tension insulator of the lead end is free of adjacent tension insulators, the rear end of the closed clamping screw is connected with the lead end clamping connector, the front clamping of the closed clamping screw is clamped with the adjacent tension insulator at the front side of the replaced tension insulator, and then the loosening of the replaced tension insulator is realized through the shrinkage of the closed clamping screw, so that the replacement of the first tension insulator of the lead end is completed.
The invention further provides a supporting mechanism for supporting the replaced strain insulator string between the pull plates corresponding to the two telescopic mechanisms, the supporting mechanism comprises an elbow and supporting joints arranged at two ends of the elbow and used for being connected with the pull plates, the supporting joints comprise mounting seats fixedly connected with the ends of the corresponding elbow, clamping grooves used for penetrating through the pull plates are formed in the mounting seats, and sealing screws are arranged at the clamping groove openings. Due to the existence of the supporting mechanism, after the strain insulator string is loosened, the supporting mechanism supports the strain insulator string, and the insulator required to be replaced is removed for replacement.
The bent pipe is of a V-shaped structure with an upward opening, so that the bent pipe is suitable for strain insulator strings of different specifications.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a cross arm end clip of the present invention;
FIG. 3 is a schematic view of a wire end card of the present invention;
FIG. 4 is a schematic view of an airfoil card screw of the present invention;
FIG. 5 is a schematic view of a pulling plate of the present invention;
FIG. 6 is a schematic view of a closed fixture of the present invention;
FIG. 7 is a schematic view of a reversing joint of the present invention;
FIG. 8 is a schematic view of a support mechanism according to the present invention;
fig. 9 is a top view of fig. 8.
Detailed Description
As shown in fig. 1 to 7, the device for replacing the tension insulator comprises an airfoil fixture for replacing a tension insulator string and a closed fixture for replacing a single tension insulator, wherein the airfoil fixture comprises a cross arm end clamp 1 and a wire end clamp 7, the cross arm end clamp 1 is connected with a traction plate of a cross arm end of the replaced tension insulator string in a mounting manner, the wire end clamp 7 is connected with a wire end parallel hanging plate of the replaced tension insulator string in a mounting manner, the cross arm end clamp 1 and the wire end clamp 7 are of double-wing structures, and corresponding wings of the cross arm end clamp 1 and the wire end clamp 7 are connected through telescopic mechanisms respectively.
The telescopic mechanism comprises an airfoil clamping screw rod 3 and a pull plate 4, the front end of the airfoil clamping screw rod 3 is connected with the corresponding wing of the cross arm end clamp 1 through a reversing joint, the rear end of the airfoil clamping screw rod 3 is connected with the front end of the pull plate 4 through a reversing joint, and the rear end of the pull plate 4 is connected with the corresponding wing of the lead end clamp 7 through a reversing joint.
The closed clamp comprises a closed clamp front clamp 10 and/or a closed clamp rear clamp 8 and two closed clamp lead screws 9 which are arranged side by side; .
The corresponding parts of the cross arm end clamps 1 and the closed clamp screw rods 7 are respectively provided with a cross arm end clamp joint 2; and lead end clamping connectors 6 are arranged on the lead end clamps 7 at positions corresponding to the closed clamping lead screws 9.
The front end of the closed clamping screw rod 9 is connected with the corresponding closed clamping front clamp 10 or the corresponding cross arm end clamping joint 2 through a reversing joint; the rear end of the closed clamping screw rod 9 is connected with the corresponding closed clamping rear clamp 8 or the lead end clamping connector 6 through a reversing connector.
In this embodiment, the airfoil-shaped clamping screw is a hydraulic screw.
According to the invention, the strain insulator string, the single strain insulator, the first strain insulator at the cross arm end and the first strain insulator at the lead end are replaced as a whole tool, so that the operation is safe, the working intensity of operators is reduced, and the tool is convenient to transport and store.
The invention comprises four working states through the technical scheme:
the first is for replacing the string of tension insulators, at which time the wing clamp operates alone. During operation, the cross arm end clamp 1 is connected with the replaced tension insulator string 11 cross arm end traction plate in a mounted manner, the wire end clamp 7 is connected with the replaced tension insulator string 11 wire end parallel hanging plate in a mounted manner, and the wing-shaped clamp is contracted by controlling the wing-shaped clamp screw 3 to realize loosening of the tension insulator string, so that replacement of the tension insulator string is completed. This operating state is not illustrated in the individual figures.
The second type is used for replacing the single-sheet tension insulator, at the moment, the front end of the closed clamp screw rod 9 is connected with the corresponding closed clamp front clamp 10, the rear end of the closed clamp screw rod 9 is connected with the corresponding closed clamp rear clamp 8, and the closed clamp and the wing-shaped clamp are movably matched for operation. During operation, the tension insulator string 11 is loosened through the wing-shaped clamp, then the closed clamp is clamped with two adjacent tension insulators before and after the replaced tension insulator, and then the replaced tension insulator is loosened through shrinkage of the closed clamp screw 9, so that replacement of the single tension insulator is completed. This operating state is shown in fig. 1.
The third kind is used for changing the first piece of strain insulator of cross arm end promptly, and the front end of closed card lead screw 9 is connected with corresponding cross arm end joint 2 this moment, and the rear end of closed card lead screw 9 is connected with corresponding closed card back card 8, and card 10 does not participate in the operation before the closed card, and closed fixture and wing section fixture connection formula cooperation operation. During operation, the tension insulator string 11 is loosened through the wing-shaped clamp, at the moment, because the front side of the first tension insulator at the cross arm end is not provided with adjacent tension insulators, the front end of the closed clamping screw rod 9 is connected with the cross arm end clamping connector 2, the closed clamping post-clamping clamp 8 is clamped with the tension insulators adjacent to the rear side of the replaced tension insulator, and then the loosening of the replaced tension insulator is realized through the contraction of the closed clamping screw rod 9, so that the replacement of the first tension insulator at the cross arm end is completed. This operating state is not illustrated in the individual figures.
The fourth type is that the first strain insulator of wire end is used for changing, and the front end of closed card lead screw 9 is connected with the card 10 before the closed card that corresponds this moment, and the rear end of closed card lead screw 9 is connected with the wire end joint 6 that corresponds, and card 8 does not participate in the operation after the closed card, and closed fixture and wing section fixture connection formula cooperation operation. During operation, the tension insulator string 11 is loosened through the wing-shaped clamp, at the moment, because the rear side of the first tension insulator of the wire end is free of adjacent tension insulators, the rear end of the closed clamping screw rod 9 is connected with the wire end clamping connector 6, the closed clamping front clamp 10 is clamped with the tension insulator adjacent to the front side of the replaced tension insulator, and then the loosening of the replaced tension insulator is realized through the contraction of the closed clamping screw rod 9, so that the replacement of the first tension insulator of the wire end is completed. This operating state is not illustrated in the individual figures.
In addition, as shown in fig. 8 and 9, a plurality of support mechanisms (i.e. bottle supporting frames) for supporting the replaced strain insulator string 11 are also transversely arranged between the pull plates 4 corresponding to the two telescopic mechanisms, and the support mechanisms are uniformly distributed along the front-rear direction and are matched with the wing-shaped clamps in use. The support mechanism comprises an elbow 41 and support joints arranged at two ends of the elbow 41 and used for being connected with the pull plate, the support joints comprise mounting seats 42 fixedly connected with the ends of the corresponding elbow, clamping grooves 43 used for penetrating through the pull plate 4 are formed in the mounting seats 42, and sealing screws 44 are arranged at the openings of the clamping grooves 43. Due to the existence of the supporting mechanism, after the strain insulator string is loosened, the supporting mechanism supports the strain insulator string 11, and the insulator required to be replaced is removed for replacement.
The bent pipe 41 is of a V-shaped structure with an upward opening so as to adapt to strain insulator strings of different specifications.
The above embodiments are only for illustrating the technical solution of the present invention, and it should be understood by those skilled in the art that although the present invention has been described in detail with reference to the above embodiments: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, which is intended to be encompassed by the claims.
Claims (6)
1. A device for changing strain insulator, including being used for changing wing section fixture that strain insulator string used and being used for changing the closed fixture that monolithic strain insulator used, its characterized in that: the wing-shaped clamp comprises a cross arm end clamp which is installed and connected with a traction plate at the cross arm end of the replaced tension insulator string and a wire end clamp which is installed and connected with a parallel hanging plate at the wire end of the replaced tension insulator string, the cross arm end clamp and the wire end clamp are of double-wing structures, and the corresponding wings of the cross arm end clamp and the wire end clamp are respectively connected through a telescopic mechanism;
the closed clamp comprises a closed clamp front clamp and/or a closed clamp rear clamp and two closed clamp lead screws which are arranged side by side;
the positions of the cross arm end clamps, which correspond to the closed clamp screw rods, are respectively provided with a cross arm end clamp joint; the lead end clamps are respectively provided with a lead end clamp joint at the positions corresponding to the closed clamp lead screws;
the front end of the closed clamping screw rod is connected with a corresponding closed clamping front clamp or cross arm end clamp connector; the rear end of the closed clamping screw rod is connected with a corresponding closed clamping rear clamp or lead end clamping connector.
2. The apparatus for replacing tension insulators of claim 1, wherein: the telescopic mechanism comprises an airfoil clamping screw rod and a pulling plate, the front end of the airfoil clamping screw rod is connected with the corresponding wing of the cross arm end clamp through a reversing joint, the rear end of the airfoil clamping screw rod is connected with the front end of the pulling plate through a reversing joint, and the rear end of the pulling plate is connected with the corresponding wing of the lead end clamp through a reversing joint.
3. The device for replacing tension insulators according to claim 1 or 2, characterized in that: the front end of the closed clamping screw rod is connected with a corresponding closed clamping front clamp or cross arm end clamp connector through a reversing connector; the rear end of the closed clamping screw rod is connected with a corresponding closed clamping rear clamp or lead end clamping connector through a reversing connector.
4. A device for replacing tension insulators according to claim 3, characterized in that: the wing-shaped clamping screw rod is a hydraulic screw rod.
5. The apparatus for replacing tension insulators of claim 2, wherein: the support mechanism comprises an elbow and support joints arranged at two ends of the elbow and used for being connected with the pull plates, the support joints comprise mounting seats fixedly connected with the ends of the corresponding elbow, clamping grooves used for penetrating the pull plates are formed in the mounting seats, and sealing screws are arranged at the clamping groove openings.
6. The apparatus for replacing tension insulators of claim 5, wherein: the bent pipe is of a V-shaped structure with an upward opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722545.7A CN107425474B (en) | 2017-08-22 | 2017-08-22 | Device for replacing tension insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710722545.7A CN107425474B (en) | 2017-08-22 | 2017-08-22 | Device for replacing tension insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107425474A CN107425474A (en) | 2017-12-01 |
| CN107425474B true CN107425474B (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710722545.7A Active CN107425474B (en) | 2017-08-22 | 2017-08-22 | Device for replacing tension insulator |
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| CN (1) | CN107425474B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109728542A (en) * | 2019-01-30 | 2019-05-07 | 云南电网有限责任公司昆明供电局 | ± 500kV power line tension insulator string replaces any method |
| CN114123030B (en) * | 2021-11-24 | 2024-02-23 | 国网江苏省电力有限公司检修分公司 | Tool and method for replacing triple strain insulator string |
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| JPH0438230A (en) * | 1990-05-30 | 1992-02-07 | Nippon Densetsu Kogyo Kk | Replacing appliance for catenary wire insulator and method thereof |
| CN106451214A (en) * | 2016-10-28 | 2017-02-22 | 国网浙江省电力公司金华供电公司 | Combined tool for electrically replacing extra-high voltage same-tower double-circuit tension insulator |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2665882Y (en) * | 2003-10-20 | 2004-12-22 | 沈鸿年 | Single sheet rimless replacing device for insulator |
| JP4514729B2 (en) * | 2006-05-02 | 2010-07-28 | 旭テック株式会社 | Tensile insulator |
| CN100464474C (en) * | 2007-03-23 | 2009-02-25 | 上海市电力公司超高压输变电公司 | Live line replacing method high voltage transmission line strain insulator-string and device |
| CN101916971B (en) * | 2010-03-23 | 2012-09-26 | 福建省电力有限公司厦门电业局 | Earth potential live replacing device for tangent tower inverted insulator string on attachment plate |
| JP2013046535A (en) * | 2011-08-26 | 2013-03-04 | Tokyo Electric Power Co Inc:The | Replacing unit for insulator or the like of insulator device for power transmission |
| CN203690800U (en) * | 2014-01-08 | 2014-07-02 | 云南电网公司带电作业分公司 | Integral clamping tool used for replacing cross arm end linear string insulator |
| JP2016146687A (en) * | 2015-02-06 | 2016-08-12 | 中国電力株式会社 | Insulator replacement assisting tool |
| CN205070303U (en) * | 2015-10-30 | 2016-03-02 | 国网青海省电力公司检修公司 | 750kV circuit block of four strain insulator string tip fixture |
| CN207074824U (en) * | 2017-08-22 | 2018-03-06 | 河南送变电建设有限公司 | For changing the device of strain insulator |
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2017
- 2017-08-22 CN CN201710722545.7A patent/CN107425474B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0438230A (en) * | 1990-05-30 | 1992-02-07 | Nippon Densetsu Kogyo Kk | Replacing appliance for catenary wire insulator and method thereof |
| CN106451214A (en) * | 2016-10-28 | 2017-02-22 | 国网浙江省电力公司金华供电公司 | Combined tool for electrically replacing extra-high voltage same-tower double-circuit tension insulator |
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| CN107425474A (en) | 2017-12-01 |
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Address after: 450051 Zhengzhou, Central Plains District, Henan West Road, No. 76 Applicant after: HENAN POWER TRANSMISSION AND TRANSFORMATION CONSTRUCTION Co.,Ltd. Applicant after: State Grid Corporation of China Applicant after: HANZHONG QUNFENG MACHINERY MANUFACTURE CO.,LTD. Address before: 450051 Zhengzhou, Central Plains District, Henan West Road, No. 76 Applicant before: HENAN TRANSMISSION AND DISTRIBUTION ENGINEERING Co. Applicant before: State Grid Corporation of China Applicant before: HANZHONG QUNFENG MACHINERY MANUFACTURE CO.,LTD. |
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