CN104201606A - Separating clamp for 500KV strain insulator string - Google Patents

Separating clamp for 500KV strain insulator string Download PDF

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Publication number
CN104201606A
CN104201606A CN201410360888.XA CN201410360888A CN104201606A CN 104201606 A CN104201606 A CN 104201606A CN 201410360888 A CN201410360888 A CN 201410360888A CN 104201606 A CN104201606 A CN 104201606A
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China
Prior art keywords
gusset piece
insulator string
strain insulator
block
jig
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CN201410360888.XA
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Chinese (zh)
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CN104201606B (en
Inventor
石亮
谢小松
刘新平
朱炜
何冰
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ZHUGUANG MACHINERY CO Ltd SHANGHAI
State Grid Shanghai Electric Power Co Ltd
Original Assignee
ZHUGUANG MACHINERY CO Ltd SHANGHAI
State Grid Shanghai Electric Power Co Ltd
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Priority to CN201410360888.XA priority Critical patent/CN104201606B/en
Publication of CN104201606A publication Critical patent/CN104201606A/en
Application granted granted Critical
Publication of CN104201606B publication Critical patent/CN104201606B/en
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Abstract

The invention provides a separating clamp for a 500KV strain insulator string. The separating clamp for the 500KV strain insulator string comprises a first connecting plate (7) which is in a shape of an isosceles triangle or an isosceles trapezoid; a plurality of tons of insulator strings are connected to the side of a cross ram of the first connecting plate (7), and a second connecting plate (14) is connected to the other side of the first connecting plate (7); the second connecting plate (14) is used for uniformly connecting a plurality of divided conductors in parallel; a supporting block (3) connects the first connecting plate (7) with the second connecting plate (14); a concave groove which is embedded and fixed to the inclined side of the first connecting plate (7) is formed in the supporting block (3), wherein the concave groove is closely matched with the inclined side of the first connecting plate by shape; a hook (1) for pulling and fixing a conductor, and a two-wire and three-wire pulley are arranged on the fitting body (3). With the adoption of the separating clamp for the 500KV strain insulator string, the separating weight of 800KV strain insulator string under electric exchanging can be reduced; in addition, the clamp uneasily slips out, and therefore, the difficulty at work can be reduced, and the insulator string can be conveniently and easily electrically exchanged.

Description

A kind of 800KV strain insulator string disengaging jig
Technical field
The present invention relates to a kind of electric power overhaul instrument, particularly, relate to a kind of 800KV strain insulator string and depart from by jig and method thereof.During the charged transposing of described jig when 800KV strain insulator string is changed, can with walk two to walk three coasters, hoist engine coordinates, disengaging weight in the time of can alleviating the charged transposing of 800KV strain insulator string, and jig is not easy to skid off, reduce work difficulty, conveniently insulator string is carried out to charged monolateral transposing easily, increase work efficiency.
Background technology
In the past, extra high voltage network, for example 220kV transmission line generally adopts double bundle conductor, and the insulator matching also all adopts two serial type formulas.Its charged transposing transmission line and insulator string thereof are the big event in live line working project, need to meet safe distance in situation, tighten up insulator string and change the work such as insulator.
Conventionally, for making various loads tighten up to coordinate with jig as instruments such as screw mandrel, tackle pulley, hydraulic pressure tightener, mechanical tighteners for changing the various jigs of the two insulator strings of transmission line, insulator string is carried out to charged monolateral transposing, reduce work difficulty, increase work efficiency.For example, a kind of 220KV strain insulator transposing jig, described jig comprises the first jig and the second jig, described the first jig and the second jig are separately positioned on for the first gusset piece of connecting insulator string and the second gusset piece, on described the first jig, be provided with the first coaster hole and bottle-holding rack hole, on described the second jig, be provided with the 3rd coaster, the second coaster hole and lead screw hole, on described the first coaster hole, be connected with the first coaster, described the second jig is connected with the first jig 1 by tightening device.During use, install after load tightening device, utilize tightening device to tighten up insulator string, make it one-sided insulator lax after, manpower departs from and slowly relaxes to ground, meanwhile, keeps a side insulator to connect intact, to increase fail safe.After a side has been assigned a new job, jig is mounted to opposite side and carries out operation.
Yet in recent years, need for electricity amount increases greatly, as the 220kV transmission line of superhigh pressure, meeting the demands, there is 500KV, 800KV is the UHV transmission line of 1000kV even.Described 500KV, the 800KV even UHV transmission line of 1000kV is used 4-8 bundle conductor, and its transmission line is used respectively 2-4 insulator string, and weight 220kV transmission line more in the past sharply increases.For example, the UHV transmission line of 500KV is used the insulator of 2-4 string, 28-31 sheet/string, substance 8KG/ sheet, and the UHV transmission line of 800KV is used that 3-4 goes here and there, 78/go here and there, the insulator of substance 28-30KG/ sheet, and total weight sharply increases.Like this, the power supply reliability of UHV transmission line, live line working, charged transposing insulator string are also had higher requirement.
For example, in the past, when the strain insulator string of 220kV transmission line is changed, because it uses the insulator of 2-4 string, 28-31 sheet/string, substance 8KG/ sheet, when charged transposing insulator string, still can use motor-driven grinding mill to described insulator string and easily get loose, it is slowly come off and hang down to ground, to be repaired or transposing resets after insulator string.
Yet, the UHV transmission line of 800KV use 3-4 string, 78/string, the insulator of substance 28-30KG/ sheet because of described 800KV strain insulator string weight larger, manpower cannot get loose, even if use motor-driven grinding mill, its operation inconvenience, effort; Carrying out strain insulator string while changing, must use two-tri-gusset pieces, after the insulator string secondary of several tons of going here and there more, always weigh is connected, getting loose, changing.Thereby, the connection of described gusset piece is proposed to requirements at the higher level.In addition, because of the restriction of existing production specification and the requirement of use habit and manufacturing cost, existing charged transposing insulator string is used, gusset piece or the jig of the main connecting elements of conduct are normalized isosceles triangle or isosceles trapezoid, there is hypotenuse, make thus strain insulator string operation unstable, easily skid off, cause the transposing of 800KV strain insulator string easily to carry out, when serious, even cause the generation of security incident.
Summary of the invention
For solving the problem of above-mentioned existence, the object of the invention is to:
Provide a kind of 800KV strain insulator string to depart from by jig and disengaging method thereof, charged transposing while being used for 800KV strain insulator string to change, described jig with walk two and walk three coasters and coordinate, disengaging weight in the time of can alleviating the charged transposing of 800KV strain insulator string, and jig is not easy to skid off, conveniently insulator string is carried out to charged monolateral transposing easily.
For achieving the above object, a kind of 800KV strain insulator string of the present invention departs from by the technical scheme of jig as follows:
A kind of 800KV strain insulator string disengaging jig, it is characterized in that: described strain insulator string departs from and comprises with jig the first gusset piece 7 that is shaped as isosceles triangle or isosceles trapezoid, described the first gusset piece 7 cross-arm sides connect many strings, total the weigh insulator string of several tons, opposite side connects multiple fission conductor
It is characterized in that:
Described strain insulator string departs from and also comprises with jig:
The second gusset piece 14, described the second gusset piece 14 is connected with the first gusset piece 7, for parallel, evenly connect multiple fission conductor,
Back-up block 3, described back-up block 3 is for connecting the first gusset piece 7 and the second gusset piece 14, and the tension force that the second gusset piece 14 is born is passed to the first gusset piece 7,
Described back-up block 3 is formed with for embedding the groove of fixing described the first gusset piece 7 hypotenuses for connecting the first gusset piece 7 places, described groove shapes and the first gusset piece hypotenuse tight connecting,
On described back-up block 3, be provided with for drawing the hook 1 of fixing cord and walking two and walk three coasters.
Describedly walk two and walk three coasters and driven by motor-driven grinding mill.
According to a kind of 800KV strain insulator string disengaging jig of the present invention, it is characterized in that: between described the first gusset piece 7 and the second gusset piece 14, be provided with and connect with parallel link plate 9.
According to a kind of 800KV strain insulator string disengaging jig of the present invention, it is characterized in that: described back-up block 3 is arranged at described parallel link plate 9 places, described back-up block 3 is provided with the fixture for fixing described parallel link plate 9.
According to a kind of 800KV strain insulator string disengaging jig of the present invention, described back-up block 3 one sides are by bolt 5, and backing plate 6 connects parallel link plate 9.
According to a kind of 800KV strain insulator string disengaging jig of the present invention, it is characterized in that: described the second gusset piece 14 is rectangle or parallelogram.
According to a kind of 800KV strain insulator string disengaging jig of the present invention, it is characterized in that: described for walk two hooks 1 of walking three coasters tractions for middle part be the mobile rod-type double-head hanger that carriage release lever, two ends have hook, described carriage release lever runs through back-up block 3 movably, two end hooks can expose back-up block 3 two ends by mobile running through, thus, described back-up block 3 can be installed on arbitrary hypotenuse side of nearly the second gusset piece of the first gusset piece.
According to a kind of 800KV strain insulator string disengaging jig of the present invention, it is characterized in that: described the first gusset piece is connected in the strain insulator string of cross-arm side by extending pull rod and socket-clevis eye.
According to a kind of 800KV strain insulator string disengaging jig of the present invention, it is characterized in that: described the second gusset piece arranges one, described the first gusset piece arranges two, and described back-up block 3 arranges 2-4.
The technical scheme of a kind of 800KV strain insulator string disengaging method of the present invention is as follows:
A kind of 800KV strain insulator string disengaging method, is characterized in that:
Use comprises the first gusset piece 7 that is shaped as isosceles triangle or isosceles trapezoid, and described the first gusset piece 7 cross-arm sides connect many strings, total the weigh insulator string of several tons, and opposite side is parallel by the second gusset piece 14, evenly connect multiple fission conductor,
Back-up block 3 is set, and for connecting the first gusset piece 7 and the second gusset piece 14, the tension force that the second gusset piece 14 is born is passed to the first gusset piece 7,
Described back-up block 3 is formed with for embedding the groove of fixing described the first gusset piece 7 hypotenuses for connecting the first gusset piece 7 places, described groove shapes and hypotenuse tight connecting,
When 800KV strain insulator string being changed to disengaging, back-up block 3 is connected to the first gusset piece 7 and the second gusset piece 14, by the hook 1 that arranges on described back-up block 3 and walk two motor-driven grinding mills of walking three coasters and ground being set and drive, after stringing lead to described strain insulator string gets loose, cable wire is connected and fixed described the second gusset piece 14 and cross-arm
After described strain insulator string gets loose, slowly hang down to ground and change,
Described strain insulator string after replacing, walking three coasters and the motor-driven grinding mill driving recovery original position that ground is set by walking two, carries out lower a string changing strain insulator string.
According to a kind of 800KV strain insulator string disengaging method of the present invention, it is characterized in that: between described the first gusset piece 7 and the second gusset piece 14, be provided with and connect with parallel link plate 9, described back-up block 3 is arranged at described parallel link plate 9 places, and described back-up block 3 is provided with the fixture for fixing described parallel link plate 9.
According to a kind of 800KV strain insulator string disengaging method of the present invention, described back-up block 3 one sides are by bolt 5, and backing plate 6 connects parallel link plate 9.
According to a kind of 800KV strain insulator string disengaging method of the present invention, it is characterized in that: described the second gusset piece 14 is rectangle or parallelogram.
According to a kind of 800KV strain insulator string disengaging method of the present invention, it is characterized in that, described for walk two hooks 1 of walking three coasters tractions for middle part be the mobile rod-type double-head hanger that carriage release lever, two ends have hook, described carriage release lever runs through back-up block 3 movably, two end hooks can expose back-up block 3 two ends by mobile running through, thus, described back-up block 3 can be installed on arbitrary hypotenuse side of nearly the second gusset piece of the first gusset piece.
According to a kind of 800KV strain insulator string disengaging method of the present invention, it is characterized in that: described the first gusset piece is connected in the strain insulator string of cross-arm side by extending pull rod and socket-clevis eye.
According to a kind of 800KV strain insulator string disengaging method of the present invention, it is characterized in that: described the second gusset piece arranges one, described the first gusset piece arranges two, and described back-up block 3 arranges 2-4.
According to the present invention, during charged transposing when 800KV strain insulator string is changed, can with walk two to walk three coasters, hoist engine coordinates, disengaging weight in the time of can alleviating the charged transposing of 800KV strain insulator string, and jig is not easy to skid off, reduce work difficulty, conveniently insulator string is carried out to charged monolateral transposing easily, increase work efficiency.
Accompanying drawing explanation
Fig. 1 is that a kind of 800KV strain insulator string of the present invention departs from the structural representation with jig back-up block.
Fig. 2 is that a kind of 800KV strain insulator string of Fig. 1 the present invention departs from the vertical view with jig back-up block.
Fig. 3 is back-up block one embodiment schematic perspective view.
Fig. 4 is the 800KV strain insulator string disengaging jig schematic diagram during the present invention uses.
In figure, 1 is hook, and 2 is square toes holding screw, and 3 is back-up block, and 4 is nut, and 5 is bolt, and 6 is backing plate, and 7 is the first gusset piece, and 8 is the parallel link plate of insulator string, and 9 is parallel link plate, and 10 walk three coasters for walking two, and 14 is the second gusset piece.
Embodiment
Below in conjunction with accompanying drawing, to the present invention is a kind of, for changing the two insulator strings of transmission line, by jig and method thereof, be described further.
A kind of 800KV strain insulator string disengaging jig, described strain insulator string departs from and comprises with jig the first gusset piece 7 that is shaped as isosceles triangle or isosceles trapezoid, described the first gusset piece 7 cross-arm sides connect many strings, total the weigh insulator string of several tons, opposite side the second gusset piece 14, described the second gusset piece 14 for parallel, evenly connect six-multiple conductor, described the second gusset piece arranges one, is rectangle.Described the first gusset piece arranges two.Described the first gusset piece 7 is isosceles trapezoid or isosceles triangle, and connects the second gusset piece 14 with hypotenuse side.
Described cross-arm is the fixing angle bar of electric pole top cross, has porcelain vase above, is used for supporting trolley wire.The effect of cross-arm: cross-arm is part important in shaft tower, its effect is for installing insulating and gold utensil, with support conductors, lightning conducter, and makes it the safe distance that keeps in accordance with regulations certain.
Back-up block 3 is set, and for connecting the first gusset piece 7 and the second gusset piece 14, the tension force that the second gusset piece 14 is born is passed to the first gusset piece 7.Described back-up block 3 is formed with for embedding the groove of fixing described the first gusset piece 7 hypotenuses for connecting the first gusset piece 7 places, described groove shapes and hypotenuse tight connecting, be provided with on described back-up block 3 for walking two walk the hook 1 of three coaster tractions and walk two and walk three coasters.Describedly walk two and walk three coasters and driven by ground maneuver strand mill.
In addition, between described the first gusset piece 7 and the second gusset piece 14, be provided with and connect with parallel link plate 9.Described back-up block 3 is arranged at described parallel link plate 9 places, and described back-up block 3 is provided with the fixture for fixing described parallel link plate 9.Described back-up block 3 one sides are by bolt 5, and backing plate 6 connects parallel link plate 9.
Described the second gusset piece 14 is even, parallel connection six-multiple conductor.Described back-up block 3 is formed with for embedding groove, described groove shapes and the hypotenuse tight connecting of fixing described the first gusset piece 7 hypotenuses for connecting the first gusset piece 7 places.Described for walk two hooks 1 of walking three coasters tractions for middle part be the mobile rod-type double-head hanger that carriage release lever, two ends have hook, described carriage release lever runs through back-up block 3 movably, two end hooks can expose back-up block 3 two ends by mobile running through, thus, described back-up block 3 can be installed on arbitrary hypotenuse side of nearly the second gusset piece of the first gusset piece.
When 800KV strain insulator string being changed to disengaging, back-up block 3 is connected to the first gusset piece 7 and the second gusset piece 14, by the hook 1 that arranges on described back-up block 3 and walk two motor-driven grinding mills of walking three coasters and ground being set and drive, after stringing lead to described strain insulator string gets loose, cable wire is connected and fixed described the second gusset piece 14 and cross-arm, after described strain insulator string gets loose, slowly hanging down to ground changes
Described strain insulator string after replacing is walked three coasters and the motor-driven grinding mill driving recovery original position that ground is set by walking two again, carries out lower a string changing strain insulator string.
According to the present invention, during charged transposing when 800KV strain insulator string is changed, can with walk two to walk three coasters, hoist engine coordinates, disengaging weight in the time of can alleviating the charged transposing of 800KV strain insulator string, and jig is not easy to skid off, reduce work difficulty, conveniently insulator string is carried out to charged monolateral transposing easily, increase work efficiency.

Claims (8)

1. a 800KV strain insulator string disengaging jig, it is characterized in that: described strain insulator string departs from and comprises with jig the first gusset piece (7) that is shaped as isosceles triangle or isosceles trapezoid, described the first gusset piece (7) cross-arm side connects many strings, total the weigh insulator string of several tons, opposite side connects multiple fission conductor
It is characterized in that:
Described strain insulator string departs from and also comprises with jig:
The second gusset piece (14), described the second gusset piece (14) is connected with the first gusset piece (7), for parallel, evenly connect multiple fission conductor,
Back-up block (3), described back-up block (3) is for connecting the first gusset piece (7) and the second gusset piece 14, and the tension force that the second gusset piece 14 is born is passed to the first gusset piece (7),
Described back-up block (3) is located to be formed with for embedding the groove of fixing described the first gusset piece (7) hypotenuse for connecting the first gusset piece (7), described groove shapes and the first gusset piece hypotenuse tight connecting,
On described back-up block (3), be provided with the hook (1) for drawing fixing cord and walk two and walk three coasters.
Describedly walk two and walk three coasters and driven by motor-driven grinding mill.
2. a kind of 800KV strain insulator string disengaging jig as claimed in claim 1, is characterized in that: between described the first gusset piece (7) and the second gusset piece 14, be provided with and connect with the parallel link plate of insulator string (9).
3. a kind of 800KV strain insulator string disengaging jig as claimed in claim 1, it is characterized in that: described back-up block (3) is arranged at described parallel link plate 9 places, described back-up block (3) is provided with the fixture for the fixing parallel link plate of described insulator string (9).
4. a kind of 800KV strain insulator string disengaging jig as claimed in claim 1, described back-up block (3) one sides are by bolt (5), the parallel link plate of backing plate (6) connecting insulator string (9).
5. a kind of 800KV strain insulator string disengaging jig as claimed in claim 1, is characterized in that: described the second gusset piece (14) is rectangle or parallelogram.
6. a kind of 800KV strain insulator string disengaging jig as claimed in claim 1, it is characterized in that: described for walk two hooks 1 of walking three coasters tractions for middle part be the mobile rod-type double-head hanger that carriage release lever, two ends have hook, described carriage release lever runs through back-up block (3) movably, two end hooks can expose back-up block (3) two ends by mobile running through, thus, described back-up block (3) can be installed on arbitrary hypotenuse side of nearly the second gusset piece of the first gusset piece.
7. a kind of 800KV strain insulator string disengaging jig as claimed in claim 1, is characterized in that: described the first gusset piece is connected in the strain insulator string of cross-arm side by extending pull rod and socket-clevis eye.
8. a kind of 800KV strain insulator string disengaging jig as claimed in claim 1, is characterized in that: described the second gusset piece arranges one, and described the first gusset piece arranges two, and described back-up block (3) arranges 2-4.
CN201410360888.XA 2014-07-25 2014-07-25 A kind of 800KV strain insulator strings disengaging fixture Active CN104201606B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107465145A (en) * 2017-09-13 2017-12-12 国网辽宁省电力有限公司鞍山供电公司 A kind of operating method and special mould clamp for changing first self-destruction insulator
CN110112678A (en) * 2019-06-20 2019-08-09 中国南方电网有限责任公司超高压输电公司柳州局 A kind of complete Work tool of charged for replacement duplex V-type pendency composite insulator

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US4365410A (en) * 1981-03-02 1982-12-28 Slater Steel Industries Limited Conductor transfer device
JPH04289711A (en) * 1991-03-18 1992-10-14 Asahi Tec Corp Stringing
CN203205770U (en) * 2013-04-24 2013-09-18 国家电网公司 V-shaped pull-bar clamp for live replacement of great tensioned strain insulator
CN103606854A (en) * 2013-11-27 2014-02-26 国家电网公司 Operating method for replacing tension insulator on super and ultra-high voltage direct current transmission line in electrified mode
CN203456796U (en) * 2013-08-15 2014-02-26 国网浙江省电力公司杭州供电公司 Broadsword fixture for replacing single insulator of duplex insulator string during power failure
CN203491598U (en) * 2013-09-10 2014-03-19 国家电网公司 Upturned pulley for replacing tension insulator
CN103825222A (en) * 2014-03-25 2014-05-28 国家电网公司 Tool for changing 220kV narrow base tower strain insulator string with charges
CN103825217A (en) * 2014-03-04 2014-05-28 国家电网公司 Anti-tension triple-connected middle string clamp for 1,000kV ultrahigh-voltage power transmission line

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365410A (en) * 1981-03-02 1982-12-28 Slater Steel Industries Limited Conductor transfer device
JPH04289711A (en) * 1991-03-18 1992-10-14 Asahi Tec Corp Stringing
CN203205770U (en) * 2013-04-24 2013-09-18 国家电网公司 V-shaped pull-bar clamp for live replacement of great tensioned strain insulator
CN203456796U (en) * 2013-08-15 2014-02-26 国网浙江省电力公司杭州供电公司 Broadsword fixture for replacing single insulator of duplex insulator string during power failure
CN203491598U (en) * 2013-09-10 2014-03-19 国家电网公司 Upturned pulley for replacing tension insulator
CN103606854A (en) * 2013-11-27 2014-02-26 国家电网公司 Operating method for replacing tension insulator on super and ultra-high voltage direct current transmission line in electrified mode
CN103825217A (en) * 2014-03-04 2014-05-28 国家电网公司 Anti-tension triple-connected middle string clamp for 1,000kV ultrahigh-voltage power transmission line
CN103825222A (en) * 2014-03-25 2014-05-28 国家电网公司 Tool for changing 220kV narrow base tower strain insulator string with charges

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107465145A (en) * 2017-09-13 2017-12-12 国网辽宁省电力有限公司鞍山供电公司 A kind of operating method and special mould clamp for changing first self-destruction insulator
CN110112678A (en) * 2019-06-20 2019-08-09 中国南方电网有限责任公司超高压输电公司柳州局 A kind of complete Work tool of charged for replacement duplex V-type pendency composite insulator

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