CN106786137B - A kind of self-locking insulator replacement fixture - Google Patents

A kind of self-locking insulator replacement fixture Download PDF

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Publication number
CN106786137B
CN106786137B CN201611109068.9A CN201611109068A CN106786137B CN 106786137 B CN106786137 B CN 106786137B CN 201611109068 A CN201611109068 A CN 201611109068A CN 106786137 B CN106786137 B CN 106786137B
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China
Prior art keywords
self
tighten screw
locking
fixture
screw
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Application number
CN201611109068.9A
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Chinese (zh)
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CN106786137A (en
Inventor
郑和平
汤晓青
范宇
廖家俊
王星
覃浩
隆茂
杨力
陈立
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SICHUAN ELECTRIC VOCATIONAL AND TECHNICAL COLLEGE
State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
Original Assignee
SICHUAN ELECTRIC VOCATIONAL AND TECHNICAL COLLEGE
State Grid Corp of China SGCC
State Grid Sichuan Electric Power Co Ltd
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Application filed by SICHUAN ELECTRIC VOCATIONAL AND TECHNICAL COLLEGE, State Grid Corp of China SGCC, State Grid Sichuan Electric Power Co Ltd filed Critical SICHUAN ELECTRIC VOCATIONAL AND TECHNICAL COLLEGE
Priority to CN201611109068.9A priority Critical patent/CN106786137B/en
Publication of CN106786137A publication Critical patent/CN106786137A/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

Abstract

The invention discloses a kind of self-locking insulator replacement fixtures, including preceding card, rear card and tighten screw, the tighten screw both ends are connected with preceding card and rear card respectively by fixture connector, and tighten screw is connected by screw thread with fixture connector, the fixture connector is being equipped with self-locking device with the end of tighten screw connecting place, tighten screw with the end of fixture joint be equipped with the matched positioning device of self-locking device, by self-locking device and positioning device automatically by fixture connector locking in tighten screw.The fixture can effectively prevent lead screw to fall off, and avoid Insulator detection, improve the safety of replacing insulator.

Description

A kind of self-locking insulator replacement fixture
Technical field
The present invention relates to a kind of insulator replacement tool, specially a kind of self-locking insulator replacement fixture.
Background technique
Centrifugal fixture is a kind of metal fixture for replacing monolithic glass or porcelain insulator in power transmission lines overhauling, packet Include preceding card for installing insulator and rear card, two tighten screws be set between preceding card and rear card, in use, only need to by preceding card and Be stuck in front of and after insulator to be replaced on two panels insulator steel cap afterwards, tighten screw by the load transfer on insulator to be replaced extremely On centrifugation card, to carry out the replacement of insulator.
Currently, since the load that insulator is born is big, being replaced during existing centrifugation is stuck in for replacing insulator When insulator, after insulator relaxation, the whole load of lead screw and front and back card receiving insulator chain takes out electric insulator steel foot side Afterwards, rotation adjusting screw need to not be stopped, increase preceding card and rear card spacing, the steel cap side of insulator could be taken out, however reality is grasped In work, after electric insulator steel foot is side-draw out, rotating threaded shaft, after stroke of the lead screw in lead screw sleeve has moved, lead screw are adjusted It is easy to fall off out of lead screw sleeve, causes insulator chain, wire dropping, it will serious human casualty accident and power grid is caused to set Standby accident.
Summary of the invention
In order to solve the above-mentioned technical problem, the present invention discloses a kind of self-locking insulator replacement fixture, which can have Effect prevents lead screw from falling off, and avoids insulator chain from being broken, improves the safety of replacing insulator.
The present invention is achieved through the following technical solutions:
A kind of self-locking insulator replacement fixture, including preceding card, rear card and tighten screw, the tighten screw both ends pass through Fixture connector is connected with preceding card and rear card respectively, and tighten screw is connected by screw thread with fixture connector, and the fixture connector exists Be equipped with self-locking device with the end of tighten screw connecting place, tighten screw with the end of fixture joint be equipped with it is self-locking The matched positioning device of device, by self-locking device and positioning device automatically by fixture connector locking in tighten screw.
Currently, existing insulator replacement fixture is in the load for being born during replacing insulator due to insulator Greatly, when replacing insulator, after insulator relaxation, the whole load of lead screw and front and back card receiving insulator chain takes out insulation It behind sub- steel feet side, need to not stop to rotate adjusting screw, increase preceding card and rear card spacing, the steel cap side of insulator could be taken out, so And in practical operation, after electric insulator steel foot is side-draw out, rotating threaded shaft is adjusted, when stroke of the lead screw in lead screw sleeve has moved Afterwards, lead screw be easy falls off out of lead screw sleeve, cause insulator, wire dropping, it will cause serious human casualty accident and Grid equipment accident.
Present inventor has found after respectively forming unit test to insulator replacement fixture, insulator replacement fixture Preceding card and rear card due to having been produced in batches previously according to the specification of insulator, structure, strength and stability are preferable, The case where deformation or fracture are less prone in replacing insulator, and tighten screw and fixture connector itself have some strength, The case where being less prone to fracture.But during replacing insulator, rotational lead screw crank is needed, makes tighten screw with respect to fixture Connector rotation is taken out and is replaced convenient for insulator to adjust the distance between preceding card and rear card, and between tighten screw and fixture connector It is connected through a screw thread, screw thread needs to bear a constant load, when tighten screw will be separated with fixture connector, is easy to appear because of spiral shell The unbearable stress of line and cause tighten screw from fixture connector be detached from.
Present inventor is placed in the self-locking dress of fixture connector end in tighten screw and fixture connector connecting place It sets and the positioning device set on tighten screw end, in tighten screw rotary course, when its rotation extremely will be with fixture connector When separation, the self-locking device on fixture connector is automatically locked in the positioning device of tighten screw, therefore tighten screw and fixture In the connection of connector, not only screw thread bears the stress generated due to insulator weight, holds also by self-locking device and positioning device Stress has been carried on a shoulder pole, tighten screw and fixture connector connection reliability have been substantially increased, to the connection between tighten screw and fixture connector It shields, tighten screw during replacing insulator is avoided to fall off, lead to insulator chain fracture, wire dropping.It can It is substantially reduced the security risk of insulator replacement fixture, improves the safety of replacing insulator, is suitable for being widely popularized.
The self-locking device includes elastic device and ball, and ball is two and is fixed on the both ends of elastic device, described Fixture connector is equipped with the through-hole of a radial direction, and casing is transversely provided in through-hole, and the elastic device and ball are set in casing, The elastic device two sides are respectively connected with a spacing collar.
The present invention can also save Decanning, and elastic device and ball are directly arranged in through-hole.
The positioning device is two positioning grooves, and positioning groove is set to tighten screw inner wall.
The positioning groove includes groove ends used for positioning and slides in or out the groove of groove ends convenient for ball Tail portion.
Self-locking device in the present invention is mainly elastic device and ball, and when tighten screw is tightened, fixture connector end is set In tighten screw slot bottom, elastic device is in compressive state at this time, and elastic device and ball are in casing, works as tightening Lead screw rotation, fixture connector are rotated outward with respect to tighten screw slot, when the self-locking device relative rotation on fixture connector is to calmly When the fluted tail of position groove, elastic device starts to stretch to two sides, and ball starts to stretch out outside casing, reverses tighten screw, card Tool connector continuation is rotated outward relative to tighten screw, and elastic device continues two sides stretching, extension, is finally pressed into the ball at its both ends To the groove ends of positioning groove, spacing collar is stretched with elastic device at this time, and one end of spacing collar is placed in casing, another End is placed in positioning groove, by fixture connector locking in tighten screw, can not be further continued for torsion tighten screw at this time, be avoided receiving Tight lead screw is detached from from fixture connector.
When needing to tighten the distance between the preceding card of insulator replacement fixture and rear card, tighten screw, card are reversely rotated Tool connector is rotated inward with respect to tighten screw slot, and ball is gradually skidded off along the path of groove ends to fluted tail at this time, Elastic device gradually compresses, and final self-locking device fully slides out positioning device, and elastic device and ball are compressed in casing again It is interior.Ensure that tighten screw can bidirectional rotation adjust on the basis of ensure that tighten screw does not fall off from fixture connector, Improve the safety of replacing insulator.
Side wall of the groove ends on the outside of tighten screw is vertical with tighten screw inner wall, and groove ends are far from tightening Side wall on the outside of lead screw is smooth cambered surface, and the fluted tail inner wall is cambered surface, and fluted tail trend is consistent with screw thread trend, And positioning groove depth is gradually reduced by groove ends to fluted tail end.
The side wall of groove ends of the invention on the outside of tighten screw is vertical with tighten screw inner wall, compared to by groove For side wall of the end on the outside of tighten screw is manufactured into cambered surface, it can both prevent ball from continuing along it on the outside of tighten screw Sliding, can also with increase spacing collar and groove ends contact surface, can be avoided spacing collar with groove ends contact portion Divide and is worn or because being difficult to deform due to meeting with stresses, effectively increases the reliability of this system of self-locking device and positioning device And durability.
Meanwhile self-locking device and positioning means contacts part are ball in the present invention, the groove ends of positioning groove are separate Side wall on the outside of tighten screw is smooth cambered surface, and fluted tail inner wall is cambered surface, and the contact surface coefficient of friction of arc is small, favorably It is slided in self-locking device relative positioning devices.Fluted tail trend is consistent with screw thread trend, and positioning groove depth is by groove ends Portion to fluted tail end gradually reduces, and the self-locking device in tighten screw rotary course is convenient for gradually to slide into calmly along direction of rotation Position device simultaneously locks, and is also convenient for self-locking device along identical path and skids off positioning device.Reach easily self-locking and releases self-locking Function, it is time saving and energy saving to operate, securely and reliably.
Preferably, the groove ends depth is 1.1~3.5 times of crown radius.It can be stable convenient for spacing collar It is fixed in groove ends, enhances self-locking limit effect.
The spacing collar is sheathed on elastic device periphery, is fixed on elastic device both ends in the middle part of spacing collar inner wall.It protects It has demonstrate,proved when ball is fully sunk in groove ends, spacing collar one end is placed in casing, and the other end is placed in groove ends, ensure that Self-locking function is realized in effective connection between self-locking device and positioning device.
Preferably, the elastic device is spring.The preferable elastic construction of other elastic properties or component can also be used. Its self-locking function can be effectively executed to meet self-locking device.
Compared with prior art, the present invention having the following advantages and benefits:
A kind of self-locking insulator replacement fixture of the present invention, by being set in tighten screw and fixture connector connecting place In the self-locking device of fixture connector end and positioning device set on tighten screw end, rotate in tighten screw to will be with card When having connector separation, the self-locking device on fixture connector is automatically locked in the positioning device of tighten screw, tighten screw with It in the connection of fixture connector, meets with stresses not only by screw thread, stress is more undertaken by self-locking device and positioning device, significantly Tighten screw and fixture connector connection reliability are improved, avoids tighten screw during replacing insulator from falling off, and then lead Insulator chain fracture, wire dropping are caused, the safety of replacing insulator is significantly improved, is suitable for being widely popularized.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is schematic structural view of the invention;
Fig. 2 is cross-sectional view at A in Fig. 1 of the present invention;
Fig. 3 is 1 self-locking device of the embodiment of the present invention and positioning device schematic diagram;
Fig. 4 is that 1 self-locking device of the embodiment of the present invention is locked in schematic diagram in positioning device;
Fig. 5 is tighten screw inner wall local expansion figure of the present invention;
Fig. 6 is 2 self-locking device of the embodiment of the present invention and positioning device schematic diagram;
Label and corresponding parts title in attached drawing:
Block before 1-, blocks after 2-, 3- tighten screw, 31- screw thread, 4- fixture connector, 5- self-locking device, 51- elastic device, 52- ball, 53- casing, 54- spacing collar, 6- positioning device, 61- groove ends, 62- fluted tail.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made For limitation of the invention.
Embodiment 1
As shown in Fig. 1~5, a kind of self-locking insulator replacement fixture of the present invention, including preceding card 1, rear card 2 and tighten screw 3,3 both ends of tighten screw are connected with preceding card 1 and rear card 2 respectively by fixture connector 4, and tighten screw 3 pass through screw thread and Fixture connector 4 is connected, and the fixture connector 4 is being equipped with self-locking device 5 with the end of 3 connecting place of tighten screw, and tighten screw 3 exists With the end of 4 junction of fixture connector be equipped with the matched positioning device 6 of self-locking device 5, pass through self-locking device 5 and positioning device 6 are automatically locked in fixture connector 4 in tighten screw 3.
The self-locking device 5 includes elastic device 51 and ball 52, and ball 52 is two and is fixed on elastic device 51 Both ends, the fixture connector 4 are equipped with the through-hole of a radial direction, are transversely provided with casing 53,51 He of elastic device in through-hole Ball 52 is set in casing 53, and 51 two sides of elastic device are respectively connected with a spacing collar 54.
The positioning device 6 is two positioning grooves, and positioning groove is set to 3 inner wall of tighten screw.
The positioning groove includes groove ends 61 used for positioning and slides in or out groove ends 61 convenient for ball 52 Fluted tail 62.
Side wall of the groove ends 61 close to 3 outside of tighten screw is vertical with 3 inner wall of tighten screw, and groove ends 61 are remote Side wall from 3 outside of tighten screw is smooth cambered surface, and 62 inner wall of fluted tail is cambered surface, the trend of fluted tail 62 and spiral shell Line 31 moves towards unanimously, and positioning groove depth is gradually reduced by groove ends 61 to 62 end of fluted tail.
61 depth of groove ends is 1.1~3.5 times of 52 radius of ball.
The spacing collar 54 is sheathed on 51 periphery of elastic device, is fixed on elastic device 51 in the middle part of 54 inner wall of spacing collar Both ends.
The elastic device 51 is spring.
Embodiment 2
As shown in Fig. 1,5 and 6, the present embodiment and the difference of embodiment 1 are only that: without casing 53, elasticity dress in through-hole Set 51 and ball 52 be directly arranged in through-hole.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include Within protection scope of the present invention.

Claims (5)

1. a kind of self-locking insulator replacement fixture, including preceding card (1), rear card (2) and tighten screw (3), the tighten screw (3) both ends are connected with preceding card (1) and rear card (2) respectively by fixture connector (4), and tighten screw (3) passes through screw thread and fixture Connector (4) is connected, which is characterized in that the fixture connector (4) is being equipped with self-locking device with the end of tighten screw (3) connecting place (5), tighten screw (3) with the end of fixture connector (4) junction be equipped with self-locking device (5) matched positioning device (6), Fixture connector (4) is locked in tighten screw (3) automatically by self-locking device (5) and positioning device (6), the self-locking device It (5) include elastic device (51) and ball (52), ball (52) is two and is fixed on the both ends of elastic device (51), the card Has the through-hole that connector (4) are equipped with a radial direction, the elastic device (51) and ball (52) are set in through-hole, the elasticity dress It sets (51) two sides and is respectively connected with a spacing collar (54), the positioning device (6) is two positioning grooves, positioning groove setting In tighten screw (3) inner wall, the spacing collar (54) is sheathed on elastic device (51) periphery, spacing collar (54) inner wall middle part It is fixed on elastic device (51) both ends.
2. a kind of self-locking insulator replacement fixture according to claim 1, which is characterized in that the positioning groove includes Groove ends (61) used for positioning and the fluted tail (62) that groove ends (61) are slid in or out convenient for ball (52).
3. a kind of self-locking insulator replacement fixture according to claim 2, which is characterized in that the groove ends (61) Side wall on the outside of tighten screw (3) is vertical with tighten screw (3) inner wall, and groove ends (61) separate tighten screw (3) are outside The side wall of side is smooth cambered surface, and fluted tail (62) inner wall is cambered surface, and fluted tail (62) trend is walked with screw thread (31) To consistent, and positioning groove depth is gradually reduced by groove ends (61) to fluted tail (62) end.
4. a kind of self-locking insulator replacement fixture according to claim 3, which is characterized in that the groove ends (61) Depth is 1.1~3.5 times of ball (52) radius.
5. a kind of self-locking insulator replacement fixture according to claim 4, which is characterized in that the elastic device (51) For spring.
CN201611109068.9A 2016-12-06 2016-12-06 A kind of self-locking insulator replacement fixture Active CN106786137B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611109068.9A CN106786137B (en) 2016-12-06 2016-12-06 A kind of self-locking insulator replacement fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611109068.9A CN106786137B (en) 2016-12-06 2016-12-06 A kind of self-locking insulator replacement fixture

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CN106786137A CN106786137A (en) 2017-05-31
CN106786137B true CN106786137B (en) 2018-12-04

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111276899B (en) * 2020-03-05 2021-02-05 国网湖北省电力有限公司检修公司 Fixture for robot for live replacement of ultrahigh voltage and ultrahigh voltage strain single insulator

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10126946A (en) * 1996-10-22 1998-05-15 Showa Electric Wire & Cable Co Ltd Power cable joint
CN2665882Y (en) * 2003-10-20 2004-12-22 沈鸿年 Single sheet rimless replacing device for insulator
CN101911415A (en) * 2008-01-09 2010-12-08 昭和电线电缆系统株式会社 Joint of power cable
CN203367880U (en) * 2013-07-31 2013-12-25 国家电网公司 760kN disk-shaped insulator holder
CN104300425A (en) * 2014-09-29 2015-01-21 国家电网公司 Spacer replacing tool

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201946908U (en) * 2010-11-24 2011-08-24 李刚 Closed type fixture for replacing insulator in high-voltage transmission line
CN202014054U (en) * 2010-12-28 2011-10-19 河北省电力公司超高压输变电分公司 Overhaul tool for dead end insulator on +/- 660kV DC power transmission line
CN202978103U (en) * 2012-12-07 2013-06-05 湖南省电网建设公司 Insulator fixture
CN203760917U (en) * 2014-02-26 2014-08-06 国家电网公司 Rotatable live-line working big knife clamping tool combination tool
CN205282999U (en) * 2016-01-19 2016-06-01 国网浙江平湖市供电公司 A insulating sleeve action bars for distribution live working
CN206225893U (en) * 2016-12-06 2017-06-06 国网四川省电力公司技能培训中心 Self-locking centrifugal fixture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10126946A (en) * 1996-10-22 1998-05-15 Showa Electric Wire & Cable Co Ltd Power cable joint
CN2665882Y (en) * 2003-10-20 2004-12-22 沈鸿年 Single sheet rimless replacing device for insulator
CN101911415A (en) * 2008-01-09 2010-12-08 昭和电线电缆系统株式会社 Joint of power cable
CN203367880U (en) * 2013-07-31 2013-12-25 国家电网公司 760kN disk-shaped insulator holder
CN104300425A (en) * 2014-09-29 2015-01-21 国家电网公司 Spacer replacing tool

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