CN105818084A - Electrification disassembling and assembling tool for power transmission line bolt - Google Patents

Electrification disassembling and assembling tool for power transmission line bolt Download PDF

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Publication number
CN105818084A
CN105818084A CN201610331799.1A CN201610331799A CN105818084A CN 105818084 A CN105818084 A CN 105818084A CN 201610331799 A CN201610331799 A CN 201610331799A CN 105818084 A CN105818084 A CN 105818084A
Authority
CN
China
Prior art keywords
power transmission
mounting box
line bolt
dismantling device
driving means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610331799.1A
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Chinese (zh)
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CN105818084B (en
Inventor
唐锐
刘伟
陈旭
道杰
张国儒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bazhou Power Supply Co Of State Grid Xinjiang Electric Power Supply Co
State Grid Corp of China SGCC
Original Assignee
Bazhou Power Supply Co Of State Grid Xinjiang Electric Power Supply Co
State Grid Corp of China SGCC
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Publication date
Application filed by Bazhou Power Supply Co Of State Grid Xinjiang Electric Power Supply Co, State Grid Corp of China SGCC filed Critical Bazhou Power Supply Co Of State Grid Xinjiang Electric Power Supply Co
Priority to CN201610331799.1A priority Critical patent/CN105818084B/en
Publication of CN105818084A publication Critical patent/CN105818084A/en
Application granted granted Critical
Publication of CN105818084B publication Critical patent/CN105818084B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B21/00Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/002Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose for special purposes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/14Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
    • B25B23/147Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)

Abstract

The invention relates to the technical field of bolt fastening tools, in particular to an electrification disassembling and assembling tool for a power transmission line bolt. The electrification disassembling and assembling tool comprises an installing box, a rotating shaft, a sleeve and an insulating rod. A power source, a torsion drive device and a signal receiving circuit board capable of remotely receiving wireless signals are arranged in the installing box. The power supply input end of the torsion drive device and the power supply input end of the signal receiving circuit board are electrically connected with power supply output ends of the power source together. The signal output end of the signal receiving circuit board is electrically connected with the signal input end of a switch control module of the torsion drive device together. The electrification disassembling and assembling tool is reasonable and compact in structure and convenient to use, and operation is conducted in a labor saving manner. The electrification work can be achieved by additionally arranging the insulating rod, and therefore the bolt disassembling and assembling time can be effectively shortened, and economic losses caused by power failures are eliminated. In addition, in the whole operation process, only one operator is needed for work at the high position, meanwhile, the staying duration of the operator working at the high position is shortened, the operation risk of the operator can be reduced, and the safety coefficient is increased.

Description

Power transmission and transformation line bolt live dismantling device
Technical field
The present invention relates to bolt-tightening tool technical field, be a kind of power transmission and transformation line bolt live dismantling device.
Background technology
When entering summer, peak times of power consumption in winter every year, load and power consumption the most rapidly increase.Strengthening emergency disposal, it is desirable to maintainer occur critical defect time, fast reaction, the shortest time eliminate critical defect, reduce the interruption maintenance time, improve electrical network power supply reliability, at utmost reduce the economic loss brought by power failure.Wherein, owing to wire clamp maintenance number of times is most, the repair time is the longest, and this will have a strong impact on " summer peak meeting ", " meeting the kurtosis winter " period electrical network power supply reliability, and the economic loss that causing has a power failure therefrom brings remains high.
At present, the step of wire clamp maintenance mainly includes preparation, steps on bar, three-phase electrical verification, hanging earthing conductor, defect elimination, dismounting earth lead and end-of-job, according to statistics, electrical verification, hanging earthing conductor, the temporal summation up to 45 minutes of dismounting earth lead, account for the 40% of total emergency repair time.This wire clamp maintenance process complex operation, wastes time and energy, and every time be both needed to have a power failure after can carry out, bring bigger economic loss.
Summary of the invention
The invention provides a kind of power transmission and transformation line bolt live dismantling device, overcoming the deficiency of above-mentioned prior art, it can effectively solve the complex operation that the maintenance of existing wire clamp exists, and wastes time and energy, and can carry out after being both needed to have a power failure, the problem bringing bigger economic loss every time.
The technical scheme is that and realized by following measures: a kind of power transmission and transformation line bolt live dismantling device, including mounting box, rotary shaft, sleeve and insulating bar, in mounting box, it is provided with power supply, torsion driving means and can remotely receive the signal receiving circuit plate of wireless signal, the energization input of torsion driving means and signal receiving circuit plate respectively with power supply each power supply outfan be electrically connected, the signal output part of signal receiving circuit plate is electrically connected with the signal input part of the switch control module of torsion driving means;In the outside of mounting box, the insulating bar in horizontal positioned is installed, mounting box is provided with rotary shaft, the lower end of rotary shaft is positioned at mounting box and the outfan with torsion driving means links together, the upper end of rotary shaft is positioned at outside mounting box and together with sleeve connection, and the upper inner of sleeve has the fastening endoporus matched with nut outline to be tightened.
Further optimization and/or improvements to foregoing invention technical scheme are presented herein below:
The above-mentioned upper outside at sleeve can be provided with stop collar, has spacing between upper end and the upper end of sleeve of stop collar.
Can be provided with limited ring dais outside the sleeve of above-mentioned corresponding stop collar bottom position, the base part seat of stop collar is on limited ring dais.
Above-mentioned can being electrically connected with in torsion driving means can control its control drive circuit board switching and turning to, control drive circuit board to install and in mounting box, the signal input part of the signal output part of signal receiving circuit plate and control drive circuit board is electrically connected, and control drive circuit board is electrically connected with each power supply outfan of power supply.
Above-mentioned can be provided with mounting ear outside the right-hand member of mounting box, the left end of insulating bar is provided with connection ring, mounting ear be connected ring and be bolted assembly and be fixedly installed togather.
Above-mentioned fastening endoporus can be hexagonal hole.
Above-mentioned torsion driving means can be brushless electric machine.
Present configuration is reasonable and compact, easy to use, rapid operation, it can realize livewire work by setting up insulating bar, it is thus possible to effectively shorten the disassembly and assembly time of bolt, and eliminate the economic loss brought that has a power failure, additionally in whole operating process, it is only necessary to an operator, in work high above the ground, also reduces its time of staying in work high above the ground simultaneously, thus its operational risk can be reduced, improve safety coefficient;Set up stop collar can be simultaneously attached on corresponding bolt with the pad mated by nut, shorten its set-up time further, and pad can be drawn in when dismantling nut, prevent it from losing;There is feature safe, laborsaving, easy, efficient.
Accompanying drawing explanation
Accompanying drawing 1 is that the master of preferred embodiment regards broken section structural representation.
Accompanying drawing 2 is the plan structure schematic diagram of accompanying drawing 1.
Accompanying drawing 3 is the circuit block diagram of accompanying drawing 1.
It is mounting box that coding in accompanying drawing is respectively as follows: 1, and 2 is rotary shaft, and 3 is sleeve, 4 is insulating bar, and 5 is power supply, and 6 is torsion driving means, 7 is signal receiving circuit plate, 8 is stop collar, and 9 is limited ring dais, and 10 for controlling drive circuit board, 11 is mounting ear, 12 for connecting ring, and 13 is bolt connection assembly, and 14 is fastening endoporus.
Detailed description of the invention
The present invention is not limited by following embodiment, can determine specific embodiment according to technical scheme and practical situation.
In the present invention, for the ease of describing, the description of the relative position relation of each parts is all that the Butut mode according to Figure of description 1 is described, such as: the position relationship of forward and backward, upper and lower, left and right etc. is based on the Butut direction of Figure of description and determines.
Below in conjunction with embodiment and accompanying drawing, the invention will be further described:
As shown in accompanying drawing 1,2,3, this power transmission and transformation line bolt live dismantling device includes mounting box 1, rotary shaft 2, sleeve 3 and insulating bar 4, in mounting box 1, it is provided with power supply 5, torsion driving means 6 and can remotely receive the signal receiving circuit plate 7 of wireless signal, the energization input of torsion driving means 6 and signal receiving circuit plate 7 respectively with power supply 5 each power supply outfan be electrically connected, the signal output part of signal receiving circuit plate 7 is electrically connected with the signal input part of the switch control module of torsion driving means 6;Insulating bar 4 in horizontal positioned is installed in the outside of mounting box 1, mounting box 1 is provided with rotary shaft 2, the lower end of rotary shaft 2 is positioned at mounting box 1 and the outfan with torsion driving means 6 links together, the upper end of rotary shaft 2 is positioned at outside mounting box 1 and links together with sleeve 3, and the upper inner of sleeve 3 has the fastening endoporus 14 matched with nut outline to be tightened.In use, the end of a hand-held insulating bar of operator 4 can be made, sleeve 3 is sleeved on nut side to be tightened, make another operator by remotely sending operation signal, signal receiving circuit plate 7 can control keying and the rotating of torsion driving means 6 after receiving corresponding signal by the switch control module of torsion driving means 6, thus realize the dismounting to power transmission and transformation line bolt or installation, present configuration is simple, easy to use, rapid operation, and livewire work can be realized by setting up insulating bar 4, it is thus possible to effectively shorten the disassembly and assembly time of bolt, and eliminate the economic loss brought that has a power failure, additionally in whole operating process, only need an operator in work high above the ground, also reduce its time of staying in work high above the ground simultaneously, thus its operational risk can be reduced, improve safety coefficient.According to demand, rotary shaft 2 can connect as one or be fixedly installed togather with the outfan of torsion driving means 6, and when both connect as one, the outfan being torsion driving means 6 protrudes upward outside mounting box 1, and links together with sleeve 3;Signal receiving circuit plate 7 can use existing known technology, and it can receive the wireless signal matched, such as remote signal etc..
According to actual needs above-mentioned power transmission and transformation line bolt live dismantling device can be made further optimization and/or improvements:
As shown in accompanying drawing 1,2, the upper outside at sleeve 3 is provided with stop collar 8, has spacing between upper end and the upper end of sleeve 3 of stop collar 8.When the present invention is for installing nut on bolt, generally can there is pad by matching set;According to demand, the internal diameter of stop collar 8 and the external diameter of sleeve 3 all should be greater than the external diameter of mated pad;In use, being loaded by nut in sleeve 3, be inserted in by pad in stop collar 8, now pad is by seat on the end face of sleeve 3, and it thus can be made pad and nut to be installed along with on the bolt of correspondence during installing;In like manner, when being used for dismantling nut, it is possible to prevent it from losing in making pad can fall into stop collar 8.According to demand, sleeve 3 can be fixed together with stop collar 8, thus prevents stop collar 8 from losing.
As shown in accompanying drawing 1,2, being provided with limited ring dais 9 outside the sleeve 3 of corresponding stop collar 8 bottom position, the base part seat of stop collar 8 is on limited ring dais 9.Set up limited ring dais 9 and can make the easier for installation laborsaving of stop collar 8.
As shown in accompanying drawing 1,2,3, torsion driving means 6 is electrically connected with the control drive circuit board 10 that can control its switch and turn to, control drive circuit board 10 to install and in mounting box 1, the signal input part of the signal output part of signal receiving circuit plate 7 and control drive circuit board 10 is electrically connected, and control drive circuit board 10 is electrically connected with each power supply outfan of power supply 5.According to demand, control drive circuit board 10 and can use existing known technology, control drive circuit board 10 and can be built in torsion driving means 6, it is possible to be positioned at outside torsion driving means 6.
As shown in accompanying drawing 1,2,3, being provided with mounting ear 11 outside the right-hand member of mounting box 1, the left end of insulating bar 4 is provided with connection ring 12, mounting ear 11 be connected ring 12 and be bolted assembly 13 and be fixedly installed togather.According to demand, bolt connection assembly 13 can use existing known technology, and bolt connection assembly 13 also can use other existing known securing member that connects to replace.In use, the selection of the specification of insulating bar 4 should meet the requirement of industry standard;Insulating bar 4 is installed together by assembly 13 with bolts with mounting box 1, can be easy to the present invention and change the insulating bar 4 of dimension according to the demand using environment.
As shown in accompanying drawing 1,2,3, fastening endoporus 14 is hexagonal hole.In the disassembly process of power transmission and transformation line bolt, its nut or nut portion mostly use hexagon, and it so can be made to be mutually matched.According to demand, fastening endoporus 14 may be used without other shape.
As shown in accompanying drawing 1,2,3, torsion driving means 6 is brushless electric machine.Brushless electric machine has brushless, low interference;Noise is low, smooth movements;Life-span is long, the advantage of low-maintenance cost.According to demand, torsion driving means 6 may be used without other existing known technology.
Above technical characteristic constitutes highly preferred embodiment of the present invention, and it has stronger adaptability and optimal implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.

Claims (10)

1. a power transmission and transformation line bolt live dismantling device, it is characterized in that including mounting box, rotary shaft, sleeve and insulating bar, in mounting box, it is provided with power supply, torsion driving means and can remotely receive the signal receiving circuit plate of wireless signal, the energization input of torsion driving means and signal receiving circuit plate respectively with power supply each power supply outfan be electrically connected, the signal output part of signal receiving circuit plate is electrically connected with the signal input part of the switch control module of torsion driving means;In the outside of mounting box, the insulating bar in horizontal positioned is installed, mounting box is provided with rotary shaft, the lower end of rotary shaft is positioned at mounting box and the outfan with torsion driving means links together, the upper end of rotary shaft is positioned at outside mounting box and together with sleeve connection, and the upper inner of sleeve has the fastening endoporus matched with nut outline to be tightened.
Power transmission and transformation line bolt live dismantling device the most according to claim 1, it is characterised in that the upper outside at sleeve is provided with stop collar, has spacing between upper end and the upper end of sleeve of stop collar.
Power transmission and transformation line bolt live dismantling device the most according to claim 2, it is characterised in that being provided with limited ring dais outside the sleeve of corresponding stop collar bottom position, the base part seat of stop collar is on limited ring dais.
4. according to the power transmission and transformation line bolt live dismantling device described in claim 1 or 2 or 3, it is characterized in that in torsion driving means, be electrically connected with the control drive circuit board that can control its switch and turn to, control drive circuit board to install and in mounting box, the signal input part of the signal output part of signal receiving circuit plate and control drive circuit board is electrically connected, and control drive circuit board is electrically connected with each power supply outfan of power supply.
5. according to the power transmission and transformation line bolt live dismantling device described in claim 1 or 2 or 3, it is characterized in that being provided with mounting ear outside the right-hand member of mounting box, the left end of insulating bar is provided with connection ring, mounting ear be connected ring and be bolted assembly and be fixedly installed togather.
Power transmission and transformation line bolt live dismantling device the most according to claim 4, it is characterised in that be provided with mounting ear outside the right-hand member of mounting box, the left end of insulating bar is provided with connection ring, mounting ear be connected ring and be bolted assembly and be fixedly installed togather.
7. according to the power transmission and transformation line bolt live dismantling device described in claim 1 or 2 or 3, it is characterised in that fastening endoporus is hexagonal hole.
Power transmission and transformation line bolt live dismantling device the most according to claim 6, it is characterised in that fastening endoporus is hexagonal hole.
9. according to the power transmission and transformation line bolt live dismantling device described in claim 1 or 2 or 3, it is characterised in that torsion driving means is brushless electric machine.
Power transmission and transformation line bolt live dismantling device the most according to claim 8, it is characterised in that torsion driving means is brushless electric machine.
CN201610331799.1A 2016-05-18 2016-05-18 Power transmission and transformation line bolt live dismantling device Active CN105818084B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610331799.1A CN105818084B (en) 2016-05-18 2016-05-18 Power transmission and transformation line bolt live dismantling device

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Application Number Priority Date Filing Date Title
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CN105818084B CN105818084B (en) 2018-03-27

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109465775A (en) * 2018-12-25 2019-03-15 国网江苏省电力有限公司检修分公司 A kind of remote locking device of high-voltage electrical apparatus and method
CN109759829A (en) * 2019-03-29 2019-05-17 云南电网有限责任公司昆明供电局 Ground potential tears tower nonloaded line drainage thread operation special electric Screw Tightening Machines open
CN110170953A (en) * 2019-04-19 2019-08-27 新疆送变电有限公司 Remote control electric spanner
CN113889918A (en) * 2021-10-21 2022-01-04 国家电网有限公司 Electrified repacking system of transmission line bolt cotter pin
CN114043427A (en) * 2021-12-03 2022-02-15 国网河北省电力有限公司沧州供电分公司 Electrified bolt repair installation tool

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2242162Y (en) * 1995-07-04 1996-12-11 徐敏刚 Disassemble and adjustable type socket wrench
US20100096151A1 (en) * 2007-01-15 2010-04-22 Atlas Copco Tools Ab Portable power tool with wireless communication with a stationary control unit
CN202805055U (en) * 2012-08-16 2013-03-20 山西省电力公司大同供电分公司 Live line tool
CN203141383U (en) * 2013-04-08 2013-08-21 国家电网公司 Insulated fastening spanner
CN203380833U (en) * 2013-06-06 2014-01-08 常州路航轨道交通科技有限公司 Intelligent torque wrench
CN103825213A (en) * 2014-03-04 2014-05-28 东南大学 Remote control intelligent bolt fastening device and method for same
CN203843753U (en) * 2014-04-23 2014-09-24 国家电网公司 Unidirectional cranked-handle wrench for live removal of arrester stud bolts
CN105415255A (en) * 2015-12-22 2016-03-23 国网福建德化县供电有限公司 Remote control wrench used for high voltage live screw mounting or demounting
CN205148170U (en) * 2015-07-02 2016-04-13 国家电网公司 Electrified fastening bolt instrument of transmission line
CN205765864U (en) * 2016-05-18 2016-12-07 国网新疆电力公司巴州供电公司 Power transmission and transformation line bolt live dismantling device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2242162Y (en) * 1995-07-04 1996-12-11 徐敏刚 Disassemble and adjustable type socket wrench
US20100096151A1 (en) * 2007-01-15 2010-04-22 Atlas Copco Tools Ab Portable power tool with wireless communication with a stationary control unit
CN202805055U (en) * 2012-08-16 2013-03-20 山西省电力公司大同供电分公司 Live line tool
CN203141383U (en) * 2013-04-08 2013-08-21 国家电网公司 Insulated fastening spanner
CN203380833U (en) * 2013-06-06 2014-01-08 常州路航轨道交通科技有限公司 Intelligent torque wrench
CN103825213A (en) * 2014-03-04 2014-05-28 东南大学 Remote control intelligent bolt fastening device and method for same
CN203843753U (en) * 2014-04-23 2014-09-24 国家电网公司 Unidirectional cranked-handle wrench for live removal of arrester stud bolts
CN205148170U (en) * 2015-07-02 2016-04-13 国家电网公司 Electrified fastening bolt instrument of transmission line
CN105415255A (en) * 2015-12-22 2016-03-23 国网福建德化县供电有限公司 Remote control wrench used for high voltage live screw mounting or demounting
CN205765864U (en) * 2016-05-18 2016-12-07 国网新疆电力公司巴州供电公司 Power transmission and transformation line bolt live dismantling device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109465775A (en) * 2018-12-25 2019-03-15 国网江苏省电力有限公司检修分公司 A kind of remote locking device of high-voltage electrical apparatus and method
CN109465775B (en) * 2018-12-25 2023-12-22 国网江苏省电力有限公司检修分公司 High-voltage electric remote locking device
CN109759829A (en) * 2019-03-29 2019-05-17 云南电网有限责任公司昆明供电局 Ground potential tears tower nonloaded line drainage thread operation special electric Screw Tightening Machines open
CN109759829B (en) * 2019-03-29 2024-01-09 云南电网有限责任公司昆明供电局 Electric bolt fastening machine special for ground potential disassembling and assembling no-load line drainage line operation
CN110170953A (en) * 2019-04-19 2019-08-27 新疆送变电有限公司 Remote control electric spanner
CN113889918A (en) * 2021-10-21 2022-01-04 国家电网有限公司 Electrified repacking system of transmission line bolt cotter pin
CN114043427A (en) * 2021-12-03 2022-02-15 国网河北省电力有限公司沧州供电分公司 Electrified bolt repair installation tool

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