CN112701616B - Extra-high voltage transmission line spacer assembly and disassembly tools - Google Patents

Extra-high voltage transmission line spacer assembly and disassembly tools Download PDF

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Publication number
CN112701616B
CN112701616B CN202011628051.0A CN202011628051A CN112701616B CN 112701616 B CN112701616 B CN 112701616B CN 202011628051 A CN202011628051 A CN 202011628051A CN 112701616 B CN112701616 B CN 112701616B
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China
Prior art keywords
circular
groove
block
spacer
tool
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CN202011628051.0A
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CN112701616A (en
Inventor
王旦黎
徐旺
夏立伟
杨磊
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State Grid Corp of China SGCC
Maintenance Branch of State Grid Hubei Electric Power Co Ltd
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State Grid Corp of China SGCC
Maintenance Branch of State Grid Hubei Electric Power Co Ltd
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Priority to CN202011628051.0A priority Critical patent/CN112701616B/en
Publication of CN112701616A publication Critical patent/CN112701616A/en
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
    • H02G1/04Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching

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  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

The invention discloses an ultra-high voltage transmission line spacer disassembling tool which comprises a positioning column handle, wherein a circular storage groove is formed in the left side of the positioning column handle, circular grooves are formed in the top and the bottom of the inner wall of the circular storage groove, and clamping mechanisms are fixedly installed inside the two circular grooves. According to the special tool for disassembling and assembling the spacing rod of the ultra-high voltage transmission line, the problem that the corresponding use length cannot be adjusted according to different use lengths in the prior art is solved by the matched use of the positioning column handle, the circular storage groove, the circular groove, the clamping mechanism, the circular stop block, the circular fixture block, the sliding block, the arc-shaped groove, the torsion spring, the extrusion rod, the circular extension block, the positioning groove, the spacing rod disassembling and assembling tool, the circular insertion groove, the replacing mechanism, the threaded through hole, the threaded rod, the rotating handle, the square block, the fixing rod, the fixing groove, the limiting block, the hinge seat, the steering column and the circular matching hole. The method is suitable for the ultra-high voltage transmission line.

Description

Extra-high voltage transmission line spacer assembly and disassembly tools
Technical Field
The invention belongs to the technical field of spacers, and particularly relates to a dismounting tool for an extra-high voltage transmission line spacer.
Background
The spacer is a hardware fitting which is installed on the split conductors and fixes the space between the split conductors to prevent the conductors from mutually whipping and inhibit breeze vibration and sub-span vibration, the spacer is generally installed in the middle of the span and is installed at intervals of 50-60 m, and the spacers of the two-split, four-split, six-split and eight-split conductors are reduced by 50% and 87% and 90% after the split conductors are installed with the spacer compared with the vibration amplitude of the spacer without the spacer.
Spacer assembly and disassembly tools, in order to satisfy the market demand, generally all until how better dismouting and how more person of facilitating the use these aspects optimize, often neglected whether can be fine regulation use length, spacer assembly and disassembly tools has, the effect of dismouting is better and more person of facilitating the use these useful parts, but has certain restriction, when normal use, the use length of often handle is certain, can not adjust use length, the problem that prior art exists is: the respective use length cannot be adjusted according to the different use lengths.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the dismounting tool for the spacer of the ultra-high voltage transmission line, which has the advantage of adjusting different use lengths and solves the problem that the corresponding use length cannot be adjusted according to different use lengths in the prior art.
The invention is realized in such a way, the dismounting tool for the spacer of the ultra-high voltage transmission line comprises a positioning column handle, wherein a circular storage groove is formed in the left side of the positioning column handle, circular grooves are formed in the top and the bottom of the inner wall of the circular storage groove, clamping mechanisms are fixedly arranged in the two circular grooves, a circular extension block is inserted into the circular storage groove, positioning grooves are formed in the top and the bottom of the circular extension block, a spacer dismounting tool is fixedly arranged on the left side of the circular extension block, a circular insertion groove is formed in the bottom of the spacer dismounting tool, a replacing mechanism is arranged in the bottom of the right side of the spacer dismounting tool, fixing grooves are formed in the front side and the rear side of the left side of the inner wall of the circular insertion groove, and a steering column is inserted into the circular insertion groove; the clamping mechanism at the top comprises a circular stop block, the outer surface of the circular stop block is in sliding connection with the inner wall of the circular groove, a circular fixture block is fixedly installed at the bottom of the circular stop block, the bottom of the circular fixture block is clamped with the inside of the positioning groove, an extrusion rod is fixedly installed at the rear side of the circular stop block, one end, away from the circular stop block, of the extrusion rod is movably connected with a sliding block, an arc-shaped groove is used at one end, away from the extrusion rod, of the sliding block in a matched mode, the arc-shaped groove is formed in the rear side of the inner wall of the circular groove, a torsion spring is fixedly installed inside the arc-shaped groove, and one end, away from the arc-shaped groove, of the torsion spring is fixedly connected with the sliding block; the change mechanism includes the screw thread through-hole, the screw thread through-hole is seted up on conductor spacer assembly and disassembly tools's right side, the inside threaded connection of screw thread through-hole has the threaded rod, the right side of threaded rod runs through the screw thread through-hole and extends to conductor spacer assembly and disassembly tools's right side, the right side fixed mounting of threaded rod has the twist grip, the left side of threaded rod runs through the screw thread through-hole and extends to the inside of circular inserting groove, the left side of threaded rod is rotated and is connected with square piece, the equal fixed mounting in left front side of square piece and rear side has the dead lever, and the left side of two dead levers all uses with the inside cooperation of fixed slot.
Preferably, the left side and the right side of the inner wall of the circular groove are both provided with a limiting groove, the left side and the right side of the circular stop block are both fixedly provided with limiting blocks, and the ends of the two limiting blocks, which are far away from each other, are both connected with the inner part of the limiting groove in a sliding manner.
Preferably, the right side of the square block is fixedly provided with a hinge seat, and the right side of the hinge seat is rotatably connected with the left side of the threaded rod.
Preferably, the steering column has a circular fitting hole formed therein, and the inside of the circular fitting hole is fitted to the outer surface of the fixing rod.
Preferably, the number of the positioning grooves is multiple, and the positioning grooves are uniformly distributed on the top and the bottom of the circular extension block.
Preferably, the protection pad is fixedly mounted on the outer surface of the circular extension block and is a plastic protection pad.
Compared with the prior art, the invention has the following beneficial effects:
1. the tool for disassembling and assembling the spacing rod of the ultra-high voltage transmission line solves the problem that the corresponding use length cannot be adjusted according to different use lengths in the prior art by the matched use of the positioning column handle, the circular storage groove, the circular groove, the clamping mechanism, the circular stop block, the circular fixture block, the sliding block, the arc-shaped groove, the torsion spring, the extrusion rod, the circular extension block, the positioning groove, the spacing rod disassembling and assembling tool, the circular insertion groove, the replacing mechanism, the threaded through hole, the threaded rod, the rotating handle, the square block, the fixing rod, the fixing groove, the limiting block, the hinge seat, the steering column and the circular matching hole.
2. According to the invention, the power source of the whole clamping mechanism is realized through the stress of the circular clamping block, because the force can be transmitted, the extrusion rod is pushed to move through the circular stop block while the circular clamping block is stressed, so that the sliding block can be driven to slide in the arc-shaped groove, a deformation force is given to the torsion spring, the circular clamping block is extruded into the circular groove, the adjustment of the circular extension block can be realized, when the circular extension block is adjusted to a proper position, the torsion spring also gives a same counterforce to the circular clamping block, and the quick clamping of the circular clamping block and the positioning groove can be realized, so that the adjusting effect is better.
3. According to the invention, the power source of the whole replacing mechanism is realized by manually rotating the rotating handle, and because force can be transmitted, the rotating handle is rotated and the threaded rod is driven to move through the threaded through hole, so that the fixed rod can be pushed to move through the square block, and the fixed rod and the fixed groove are matched for use, the steering column is good in mounting effect, and the replacing effect is better.
4. The limiting grooves are arranged, so that the sliding connection with the limiting blocks fixedly arranged on the left side and the right side of the circular stop block can be realized, the position of the circular stop block can be well limited, and the motion track of the circular stop block can be more stable.
5. According to the invention, the hinged seat is arranged, so that a good limiting force can be applied to the threaded rod while the normal rotation of the threaded rod is not influenced, and the replacement effect is better.
6. According to the invention, the round matching holes are arranged, and the inner part of the round matching holes is matched with the outer surface of the fixing rod for use, so that the mounting effect is better.
7. According to the invention, the number of the positioning grooves is multiple, so that different use lengths can be adjusted.
8. According to the invention, the protective pad is arranged, so that the adjusting effect is better.
Drawings
FIG. 1 is a schematic diagram of a structure provided by an embodiment of the present invention;
FIG. 2 is a schematic view of a positioning groove provided in the embodiment of the present invention;
FIG. 3 is a schematic view of a circular insertion groove provided in an embodiment of the present invention;
FIG. 4 is a detailed view of a clamping mechanism provided in accordance with an embodiment of the present invention;
FIG. 5 is a detailed view of the replacement mechanism provided by the embodiment of the present invention;
fig. 6 is a schematic view of a circular storage tank provided by an embodiment of the present invention.
In the figure: 1. a positioning column handle; 2. a circular storage tank; 3. a circular groove; 4. a clamping mechanism; 401. a circular stopper; 402. a circular fixture block; 403. a slider; 404. an arc-shaped slot; 405. a torsion spring; 406. an extrusion stem; 5. a circular extension block; 6. positioning a groove; 7. a spacer dismounting tool; 8. a circular insertion groove; 9. a mechanism is replaced; 901. a threaded through hole; 902. a threaded rod; 903. rotating the handle; 904. a square block; 905. fixing the rod; 10. fixing grooves; 11. a limiting groove; 12. a limiting block; 13. a hinged seat; 14. a steering column; 15. a circular mating hole.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
The structure of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 6, an extra-high voltage transmission line spacer disassembling tool provided by an embodiment of the invention comprises a positioning column handle 1, a circular storage groove 2 is formed in the left side of the positioning column handle 1, circular grooves 3 are formed in the top and the bottom of the inner wall of the circular storage groove 2, clamping mechanisms 4 are fixedly mounted inside the two circular grooves 3, a circular extension block 5 is inserted inside the circular storage groove 2, positioning grooves 6 are formed in the top and the bottom of the circular extension block 5, a spacer disassembling tool 7 is fixedly mounted on the left side of the circular extension block 5, a circular insertion groove 8 is formed in the bottom of the spacer disassembling tool 7, a replacing mechanism 9 is arranged inside the bottom of the right side of the spacer disassembling tool 7, fixing grooves 10 are formed in the front side and the rear side of the left side of the inner wall of the circular insertion groove 8, and a steering column 14 is inserted inside the circular insertion groove 8.
Referring to fig. 4, top clamping mechanism 4 includes circular dog 401, the surface of circular dog 401 and the inner wall sliding connection of circular recess 3, the bottom fixed mounting of circular dog 401 has circular fixture block 402, the bottom of circular fixture block 402 and the inside joint of constant head tank 6, the rear side fixed mounting of circular dog 401 has extrusion stem 406, the one end swing joint that circular dog 401 was kept away from to extrusion stem 406 has sliding block 403, the one end cooperation that extrusion stem 406 was kept away from to sliding block 403 is used and is had arc wall 404, arc wall 404 sets up the rear side at circular recess 3 inner wall, the inside fixed mounting of arc wall 404 has torsion spring 405, torsion spring 405 keeps away from the one end and the sliding block 403 fixed connection of arc wall 404.
Adopt above-mentioned scheme: realize whole clamping mechanism 4's power supply through circular fixture block 402 atress, because of power can transmit, promote the extrusion stem 406 through circular dog 401 and remove in circular fixture block 402 atress, just so can realize driving sliding block 403 and slide in the inside of arc wall 404, thereby realize giving the power of a deformation of torsion spring 405, thereby squeeze into circular recess 3's inside with circular fixture block 402, just so can realize the regulation of circular extension piece 5, when waiting to adjust to suitable position, torsion spring 405 also gives circular fixture block 402 a same reaction force, just so can realize the quick joint of circular fixture block 402 and constant head tank 6, make the effect of adjusting better.
Referring to fig. 5, change mechanism 9 and include screw through hole 901, screw through hole 901 is seted up on the right side of conductor spacer assembly and disassembly tools 7, the internal thread of screw through hole 901 has threaded rod 902, the right side of threaded rod 902 runs through screw through hole 901 and extends to the right side of conductor spacer assembly and disassembly tools 7, the right side fixed mounting of threaded rod 902 has twist grip 903, the left side of threaded rod 902 runs through screw through hole 901 and extends to the inside of circular inserting groove 8, the left side of threaded rod 902 is rotated and is connected with square piece 904, the equal fixed mounting in left front of square piece 904 and the rear side has dead lever 905, the left side of two dead levers 905 all uses with the inside cooperation of fixed slot 10.
Adopt above-mentioned scheme: realize whole power supply of changing mechanism 9 through rotatory twist grip 903 of manpower, because of power can be transmitted, drive threaded rod 902 through screw through-hole 901 and remove in rotatory twist grip 903, just so can promote the dead lever 905 and remove through square piece 904 to realize that the cooperation of dead lever 905 and fixed slot 10 is used, make the effectual of steering column 14 installation, the effect of changing simultaneously is also better.
Referring to fig. 4, the limiting groove 11 has been all seted up to the left and right sides of 3 inner walls of circular recess, and the equal fixed mounting in the left and right sides of circular dog 401 has stopper 12, and the one end that two stopper 12 deviate from mutually all with the inside sliding connection of limiting groove 11.
Adopt above-mentioned scheme: through setting up spacing groove 11, just so can realize with the stopper 12 sliding connection of circular dog 401 left and right sides fixed mounting, the position of restriction circular dog 401 that not only can be fine like this also enables circular dog 401's movement track more stable simultaneously.
Referring to fig. 5, the right side of the square block 904 is fixedly provided with the hinge base 13, and the right side of the hinge base 13 is rotatably connected with the left side of the threaded rod 902.
Adopt above-mentioned scheme: through setting up articulated seat 13, just so can realize giving the power of a fine restriction to threaded rod 902 when not influencing threaded rod 902 normal rotation, make the effect of changing better.
Referring to fig. 5, a circular fitting hole 15 is formed in the steering column 14, and the inside of the circular fitting hole 15 is fitted to the outer surface of the fixing rod 905.
Adopt above-mentioned scheme: through setting up circular mating holes 15, and inside and the surface cooperation of dead lever 905 use, just so can make the effect of installation better.
Referring to fig. 2, the positioning grooves 6 are provided in a plurality and are uniformly distributed on the top and bottom of the circular extension block 5.
Adopt above-mentioned scheme: the number of the positioning grooves 6 is multiple, so that different use lengths can be adjusted.
Referring to fig. 2, a protection pad is fixedly installed on the outer surface of the circular extension block 5, and the protection pad is a plastic protection pad.
Adopt above-mentioned scheme: by arranging the protective pad, the adjusting effect can be better.
The working principle of the invention is as follows:
when the clamping mechanism is used, firstly, the power source of the whole clamping mechanism 4 is realized through the stress of the circular fixture block 402, because the force can be transmitted, the extrusion rod 406 is pushed to move through the circular stopper 401 while the circular fixture block 402 is stressed, so that the sliding block 403 can be driven to slide in the arc-shaped groove 404, a deformation force is given to the torsion spring 405, the circular fixture block 402 is extruded into the circular groove 3, so that the adjustment of the circular extension block 5 can be realized, when the adjustment is carried out to a proper position, the torsion spring 405 also gives the same reaction force to the circular fixture block 402, so that the quick clamping of the circular fixture block 402 and the positioning groove 6 can be realized, meanwhile, through the arrangement of the limiting grooves 11, the sliding connection with the limiting blocks 12 fixedly arranged at the left side and the right side of the circular stopper 401 can be realized, so that the position of the circular stopper 401 can be well limited, also enable circular dog 401's movement track more stable simultaneously, make the effect of regulation better, secondly realize the whole power supply of changing mechanism 9 through manpower twist grip 903, because of power can be transmitted, drive threaded rod 902 through screw through-hole 901 and remove in twist grip 903, just so can promote the dead lever 905 to remove through square piece 904, thereby realize that dead lever 905 uses with the cooperation of fixed slot 10, simultaneously through setting up articulated seat 13, just so can realize giving the power of a fine restriction of threaded rod 902 when not influencing threaded rod 902 normal rotation, make the effectual of steering column 14 installation, the effect of changing simultaneously is also better, at last through setting up the protection pad, just so can make the effect of regulation better.
In summary, the following steps: this special high tension transmission line conductor spacer assembly and disassembly tools, through setting up reference column handle 1, circular storage tank 2, circular recess 3, latch mechanism 4, circular dog 401, circular fixture block 402, sliding block 403, arc wall 404, torsion spring 405, extrusion stem 406, circular extension piece 5, constant head tank 6, conductor spacer assembly and disassembly tools 7, circular inserting groove 8, change mechanism 9, screw through-hole 901, threaded rod 902, twist grip 903, square piece 904, dead lever 905, fixed slot 10, spacing groove 11, stopper 12, articulated seat 13, the cooperation of steering column 14 and circular mating holes 15 is used, the problem that current use length can not adjust corresponding according to the use length of difference has been solved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides an extra-high voltage transmission line conductor spacer assembly and disassembly tools, includes reference column handle (1), its characterized in that: a circular storage groove (2) is formed in the left side of the positioning column handle (1), circular grooves (3) are formed in the top and the bottom of the inner wall of the circular storage groove (2), clamping mechanisms (4) are fixedly mounted inside the two circular grooves (3), a circular extension block (5) is inserted into the circular storage groove (2), positioning grooves (6) are respectively arranged at the top and the bottom of the circular extension block (5), a spacer disassembling tool (7) is fixedly arranged on the left side of the circular extension block (5), the bottom of the spacer disassembling tool (7) is provided with a circular splicing groove (8), a replacing mechanism (9) is arranged on the right side of the spacer disassembling tool (7), fixing grooves (10) are formed in the front side and the rear side of the inner wall of the circular insertion groove (8), and a steering column (14) is inserted into the circular insertion groove (8); the number of the positioning grooves (6) is multiple, and the positioning grooves are uniformly distributed and arranged at the top and the bottom of the circular extension block (5);
the clamping mechanism (4) at the top comprises a circular stop block (401), the outer surface of the circular stop block (401) is connected with the inner wall of the circular groove (3) in a sliding way, a circular fixture block (402) is fixedly arranged at the bottom of the circular stop block (401), the bottom of the circular fixture block (402) is clamped with the inside of the positioning groove (6), an extrusion rod (406) is fixedly installed at the rear side of the circular block (401), a sliding block (403) is movably connected at one end of the extrusion rod (406) far away from the circular block (401), an arc-shaped groove (404) is matched and used at one end of the sliding block (403) far away from the extrusion rod (406), the arc-shaped groove (404) is arranged at the rear side of the inner wall of the circular groove (3), a torsion spring (405) is fixedly arranged in the arc-shaped groove (404), one end of the torsion spring (405) far away from the arc-shaped groove (404) is fixedly connected with the sliding block (403);
the replacement mechanism (9) comprises a thread through hole (901), the thread through hole (901) is formed in the right side of the spacer dismounting tool (7), a threaded rod (902) is connected to the internal thread of the thread through hole (901), the right side of the threaded rod (902) penetrates through the thread through hole (901) and extends to the right side of the spacer dismounting tool (7), a rotary handle (903) is fixedly mounted on the right side of the threaded rod (902), the left side of the threaded rod (902) penetrates through the thread through hole (901) and extends to the inside of the circular insertion groove (8), a square block (904) is rotatably connected to the left side of the threaded rod (902), fixing rods (905) are fixedly mounted on the left front side and the left side of the square block (904), and the left sides of the two fixing rods (905) are matched with the inside of the fixing groove (10) for use.
2. The tool for disassembling and assembling the spacer of the extra-high voltage transmission line according to claim 1, characterized in that: spacing groove (11) have all been seted up to the left and right sides of circular recess (3) inner wall, the equal fixed mounting in the left and right sides of circular dog (401) has stopper (12), and the one end that two stopper (12) deviate from mutually all with the inside sliding connection of spacing groove (11).
3. The tool for disassembling and assembling the spacer of the extra-high voltage transmission line according to claim 1, characterized in that: the right side fixed mounting of square piece (904) has articulated seat (13), the right side of articulated seat (13) is connected with the left side rotation of threaded rod (902).
4. The tool for disassembling and assembling the spacer of the extra-high voltage transmission line according to claim 1, characterized in that: circular mating holes (15) have been seted up to the inside of steering column (14), the inside of circular mating holes (15) is used with the surface cooperation of dead lever (905).
5. The tool for disassembling and assembling the spacer of the extra-high voltage transmission line according to claim 1, characterized in that: the outer surface of the circular extension block (5) is fixedly provided with a protective pad, and the protective pad is a plastic protective pad.
CN202011628051.0A 2020-12-31 2020-12-31 Extra-high voltage transmission line spacer assembly and disassembly tools Active CN112701616B (en)

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CN112701616B true CN112701616B (en) 2022-04-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549130A (en) * 1991-04-30 1993-02-26 Tohoku Electric Power Co Inc Mounting tool for power transmission and distribution spacer
CN102545100A (en) * 2012-01-19 2012-07-04 福建省电力有限公司厦门电业局 Live installation tool for space bar of twin-bundled conductor
CN111130032A (en) * 2019-12-12 2020-05-08 西安世锐软件有限责任公司 Cable support for computer network communication
CN210985586U (en) * 2019-12-18 2020-07-10 国家电网有限公司 Power transmission line spacer
CN212080307U (en) * 2020-04-26 2020-12-04 杭州福诗科技有限公司 Portable valve opener capable of being adjusted in telescopic mode

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108551146A (en) * 2018-05-12 2018-09-18 固力发电气有限公司 A kind of two-way conductor spacer set up suitable for high-voltage cable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0549130A (en) * 1991-04-30 1993-02-26 Tohoku Electric Power Co Inc Mounting tool for power transmission and distribution spacer
CN102545100A (en) * 2012-01-19 2012-07-04 福建省电力有限公司厦门电业局 Live installation tool for space bar of twin-bundled conductor
CN111130032A (en) * 2019-12-12 2020-05-08 西安世锐软件有限责任公司 Cable support for computer network communication
CN210985586U (en) * 2019-12-18 2020-07-10 国家电网有限公司 Power transmission line spacer
CN212080307U (en) * 2020-04-26 2020-12-04 杭州福诗科技有限公司 Portable valve opener capable of being adjusted in telescopic mode

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