CN103872621A - Fixture for replacing strain insulator string under electrified state based on earth potential method and operation method - Google Patents
Fixture for replacing strain insulator string under electrified state based on earth potential method and operation method Download PDFInfo
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- CN103872621A CN103872621A CN201410085733.XA CN201410085733A CN103872621A CN 103872621 A CN103872621 A CN 103872621A CN 201410085733 A CN201410085733 A CN 201410085733A CN 103872621 A CN103872621 A CN 103872621A
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- yoke plate
- jig
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Abstract
The invention relates to a fixture for replacing a strain insulator string under an electrified state based on an earth potential method. The fixture comprises left and right linking plate clamps which are respectively used for connecting linking plates at two ends; the left and right linking plate clamps are respectively composed of a mounting base, a pulley block and a set of linking plate clamping connectors; the pulley blocks are mounted on the mounting bases; the linking plate clamping connectors are detachably connected with the mounting bases; the left and right linking plate clamps are connected through a high-strength rope which is wound between the two pulley blocks; one end of the high-strength rope is fixed on one of the linking plate clamps while the other end is served as a free operating end. According to the fixture and an operation method provided by the invention, the operation is simple, quick and convenient; the working strength of operators can be reduced; the working efficiency is increased; the operation time is reduced; the applicability is excellent; the operation can be efficiently and safely finished under the condition of ensuring the safety of operators; the safe running of a power grid is ensured while the power-off/on operation volume and the change of the running mode of the whole power grid are reduced; the running safety and reliability of the power grid are greatly increased; the economic benefit is obvious.
Description
Technical field
The present invention relates to electrical network and hot line maintenance technical field, particularly jig and operational method for a kind of earth potential method charged changing tension-resisting insulator.
Background technology
Along with socioeconomic development, society is increasing for the demand of electric power, impel electrical network scale constantly to expand, overhead wire transmission is as the main body mode of electric power conveying at present, line size constantly increases thereupon, wire type also strengthens thereupon, and various gold utensils are various, synthetic insulator length differs, and originally used operation jig can not meet current diversified job requirements.Once cannot process if charged, will need the more power failure operation time, that will cause huge economic loss and social effect.In order to alleviate this type of contradiction, be badly in need of a class and can adapt to different work demand, the light instrument of carrying out live line working.
There is some problems in charged changing tension-resisting insulator at present.Along with requiring improving constantly of transmission capacity, the line conductor model of operation is all greater than early stage wire type in recent years; The yoke plate that early stage circuit uses mostly is triangle yoke plate, and present yoke plate has four jiao of two hole, four jiao of four hole, four jiaos of elliptical aperture equal-specifications; The thickness of existing gold utensil is more diversified, is not quite similar from the thickness of 12mm～24mm.The model of line hardware, yoke plate and the wire putting into operation is for many years all much larger than early stage circuit, and therefore, the operation jig of replacing strain insulator originally can not meet the requirement that present line insulator is changed, and many operations cannot be carried out.Meanwhile, when equal potential working, conventional personnel's equipotential method, due to the cause of space length deficiency, is used old jig cannot be applicable to current novel shaft tower.
Summary of the invention
Main purpose of the present invention is the shortcoming that overcomes prior art, provide a kind of simple and quick, can reduce operating personnel's working strength, increase work efficiency, and applicability is good, jig and operational method for safe and reliable earth potential method charged changing tension-resisting insulator.
The present invention adopts following technical scheme:
A kind of earth potential method charged changing tension-resisting insulator jig, include left and right two link plate clamping tools that are respectively used to connect two ends yoke plate, left and right link plate clamping tool by a mount pad, be installed on an assembly pulley on mount pad and one group of yoke plate clamp joint being removably connected on mount pad forms, left and right two link plate clamping tools connect by the high strength cord being wound between two assembly pulleys, high strength cord one end is fixed on a link plate clamping tool, and the other end is as operating free end.
Further, also include one and be fixed on cross-arm for changing action direction to realize the insulation fixed pulley of terrestrial operation, the operating free end of described high strength cord is walked around this insulation fixed pulley.
Further, described yoke plate clamp joint one end offers connecting hole for connection seat, and the other end forms can be folded in yoke plate double plate structure therebetween, and every group of yoke plate clamp joint includes the plurality of specifications that can coordinate with different model yoke plate.
Further, on two clamping plate of described yoke plate clamp joint, offer and the pin-and-hole that on yoke plate, intrinsic fixing hole matches, can yoke plate clamp joint and yoke plate be locked by movable latch.
Further, between described pin-and-hole and movable latch, be formed with the self-locking mechanism cooperatively interacting, in described pin-and-hole, be provided with a circular protrusions, be formed with a L shaped guide groove matching with described circular protrusions in movable latch, circular protrusions can just also can be walked along L shaped guide groove by L shaped guide groove.
Further, described mount pad one end forms can be placed in yoke plate clamp connector clamp double plate structure therebetween, on two clamping plate, offers connecting hole, can mount pad be fixedly connected with yoke plate clamp joint by securing member; The mount pad other end arranges perpendicular to yoke plate direction, and upper/lower terminal is formed for installing the double plate structure of assembly pulley, and upper/lower terminal is respectively provided with a pulley by a bearing pin.
Further, on described mount pad, also offer the rope fixing hole for fixing high strength cord one end.
A kind of charged changing tension-resisting insulator operational method, comprises the following steps:
1. assemble jig; Yoke plate clamp joint according to the yoke plate model selection of operation with this yoke plate adaptation, and assemble left and right link plate clamping tool;
2. jig is installed between the yoke plate of two ends; Left and right link plate clamping tool is connected on the yoke plate of two ends, and high strength cord is set around between two assembly pulleys of left and right link plate clamping tool, and walk around insulation fixed pulley;
3. tighten up assembly pulley, unclamp insulator string; By tension high strength cord operating free end to tighten up assembly pulley, make wire in tightening up state, then unclamp insulator string;
4. change insulator string, and recover assembly pulley, remove jig; Change after insulator string, unclamped high strength cord, can recover assembly pulley, then removed jig of the present invention, completed the operation of earth potential method hot-line insulator string replacement.
From the above-mentioned description of this invention, compared with prior art, the present invention has following beneficial effect:
1. install between each parts and all adopt and removably connect, can realize disassembled for transport, assembling use, convenient and practical;
2. link plate clamping tool is removably connected and is formed by mount pad and yoke plate clamp joint, can select according to the yoke plate of different model the yoke plate clamp joint of different size.Go to while carrying out operation compared with complex environment, only need carry a set of jig, and carry corresponding yoke plate clamp joint according to required yoke plate model, more portable, time saving and energy saving;
3. left and right link plate clamping tool is connected by assembly pulley and high strength cord, application movable pulley principle can reduce the manipulation strength of stringing lead, and rope is not subject to spatial limitation, greatly increase the flexibility of instrument installation length, widen the scope of application of instrument, made it to be suitable for the replacing insulator live line working of various different lengths.In addition, utilize insulation fixed pulley, the operation of stringing lead is transferred to ground from high-altitude, can improve operating efficiency, reduce security risk;
4. between pin-and-hole and movable latch, be formed with the self-locking mechanism cooperatively interacting, design ingeniously, use simple and conveniently, and can effectively lock;
In a word, the present invention is simple and quick, can reduce operating personnel's working strength, increase work efficiency, reduce the activity duration, and applicability is good, can under the prerequisite that ensures operating personnel's safety, fulfil assignment efficiently and safely, both ensure the safe operation of electrical network, can reduce the change that stops power transmission operational ton and whole power system operating mode simultaneously, greatly improve safe operation of electric network reliability, and there is significant economic benefit.
Brief description of the drawings
Fig. 1 is the mounting structure end view of the specific embodiment of the invention;
Fig. 2 is link plate clamping tool and the yoke plate syndeton vertical view of the specific embodiment of the invention;
Fig. 3 is the side-looking structure chart of the link plate clamping tool of the specific embodiment of the invention;
Fig. 4 is the structural representation of the self-locking mechanism of the specific embodiment of the invention.
In figure: 1. yoke plate, 2. left link plate clamping tool, 3. right link plate clamping tool, 4. mount pad, 5. yoke plate clamp joint, 6. high strength cord, 7. insulation fixed pulley, 8. pin-and-hole, 80. circular protrusions, 9. movable latch, 90.L shape guide groove, 10. bearing pin, 11. pulleys, 12. rope fixing holes.
Embodiment
Below by embodiment, the invention will be further described.
With reference to Fig. 1, Fig. 2 and Fig. 3, a kind of earth potential method charged changing tension-resisting insulator jig of the present invention, include the left link plate clamping tool 2 and the right link plate clamping tool 3 that are respectively used to connect two ends yoke plate 1, left link plate clamping tool 2 and right link plate clamping tool 3 are by a mount pad 4, the assembly pulley and the one group of yoke plate clamp joint 5 being removably connected on mount pad 4 that are installed on mount pad 4 form, left link plate clamping tool 2 and right link plate clamping tool 3 connect by the high strength cord 6 being wound between two assembly pulleys, high strength cord 6 one end are fixed on a link plate clamping tool, the other end is as operating free end.Also include one and be fixed on cross-arm for changing action direction to realize the insulation fixed pulley 7 of terrestrial operation, the operating free end of described high strength cord 6 is walked around this insulation fixed pulley 7.
Described yoke plate clamp joint 5 one end offer connecting hole for connection seat 4, and the other end forms can be folded in yoke plate 1 double plate structure therebetween, and every group of yoke plate clamp joint 5 includes the plurality of specifications that can coordinate with different model yoke plate 1.On two clamping plate of described yoke plate clamp joint 5, offer the pin-and-hole 8 matching with intrinsic fixing hole on yoke plate 1, can yoke plate clamp joint 5 and yoke plate 1 be locked by movable latch 9.
Described mount pad 4 one end form and yoke plate clamp joint 5 can be folded in to double plate structure therebetween, on two clamping plate, offer connecting hole, can mount pad 4 be fixedly connected with yoke plate clamp joint 5 by securing member; Mount pad 4 other ends are perpendicular to yoke plate 1 direction setting, and upper/lower terminal is formed for installing the double plate structure of assembly pulley, and upper/lower terminal is respectively provided with a pulley 11 by a bearing pin 10.On described mount pad 4, also offer the rope fixing hole 12 for fixing high strength cord 6 one end.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, between described pin-and-hole 8 and movable latch 9, be formed with the self-locking mechanism cooperatively interacting, in described pin-and-hole 8, be provided with a circular protrusions 80, in movable latch 9, be formed with a L shaped guide groove 90 matching with described circular protrusions 80, circular protrusions 80 can just also can be walked along L shaped guide groove 90 by L shaped guide groove 90.Movable latch 9 is pushed to rotate to be and lock, L shaped guide groove 90 is completed and is locked by the walking of circular protrusions 80; Otherwise, by movable latch 9 rotation extract be out of stock.
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, when the present invention carries out the operation of earth potential method charged for replacement 220KV insulator string, comprise the following steps:
1. assemble jig; Yoke plate clamp joint 5 according to the yoke plate 1 model selection of operation with this yoke plate 1 adaptation, and assemble left and right link plate clamping tool;
2. jig is installed between two ends yoke plate 1; Left and right link plate clamping tool is connected on two ends yoke plate 1, and high strength cord 6 is set around between two assembly pulleys of left and right link plate clamping tool, and walk around insulation fixed pulley 7;
3. tighten up assembly pulley, unclamp insulator string; By tension high strength cord 6 operating free end to tighten up assembly pulley, make wire in tightening up state, then unclamp insulator string;
4. change insulator string, and recover assembly pulley, remove jig; Change after insulator string, unclamped high strength cord 6, can recover assembly pulley, then removed jig of the present invention, completed the operation of earth potential method hot-line insulator string replacement.
Above are only a specific embodiment of the present invention, but design concept of the present invention is not limited to this, allly utilizes this design to carry out the change of unsubstantiality to the present invention, all should belong to the behavior of invading protection range of the present invention.
Claims (8)
1. an earth potential method charged changing tension-resisting insulator jig, it is characterized in that: include left and right two link plate clamping tools that are respectively used to connect two ends yoke plate, left and right link plate clamping tool by a mount pad, be installed on an assembly pulley on mount pad and one group of yoke plate clamp joint being removably connected on mount pad forms, left and right two link plate clamping tools connect by the high strength cord being wound between two assembly pulleys, high strength cord one end is fixed on a link plate clamping tool, and the other end is as operating free end.
2. a kind of earth potential method charged changing tension-resisting insulator jig as claimed in claim 1, it is characterized in that: also include one and be fixed on cross-arm for changing action direction to realize the insulation fixed pulley of terrestrial operation, the operating free end of described high strength cord is walked around this insulation fixed pulley.
3. a kind of earth potential method charged changing tension-resisting insulator jig as claimed in claim 1, it is characterized in that: described yoke plate clamp joint one end offers connecting hole for connection seat, the other end forms can be folded in yoke plate double plate structure therebetween, and every group of yoke plate clamp joint includes the plurality of specifications that can coordinate with different model yoke plate.
4. a kind of earth potential method charged changing tension-resisting insulator jig as claimed in claim 3, it is characterized in that: on two clamping plate of described yoke plate clamp joint, offer and the pin-and-hole that on yoke plate, intrinsic fixing hole matches, can yoke plate clamp joint and yoke plate be locked by movable latch.
5. a kind of earth potential method charged changing tension-resisting insulator jig as claimed in claim 4, it is characterized in that: between described pin-and-hole and movable latch, be formed with the self-locking mechanism cooperatively interacting, in described pin-and-hole, be provided with a circular protrusions, in movable latch, be formed with a L shaped guide groove matching with described circular protrusions, circular protrusions can just also can be walked along L shaped guide groove by L shaped guide groove.
6. a kind of earth potential method charged changing tension-resisting insulator jig as claimed in claim 3, it is characterized in that: described mount pad one end forms can be placed in yoke plate clamp connector clamp double plate structure therebetween, on two clamping plate, offer connecting hole, can mount pad be fixedly connected with yoke plate clamp joint by securing member; The mount pad other end arranges perpendicular to yoke plate direction, and upper/lower terminal is formed for installing the double plate structure of assembly pulley, and upper/lower terminal is respectively provided with a pulley by a bearing pin.
7. a kind of earth potential method charged changing tension-resisting insulator jig as claimed in claim 6, is characterized in that: on described mount pad, also offer the rope fixing hole for fixing high strength cord one end.
8. a charged changing tension-resisting insulator operational method for jig for the earth potential method charged changing tension-resisting insulator based on described in claim 1 to 7, is characterized in that: comprise the following steps:
1. assemble jig; Yoke plate clamp joint according to the yoke plate model selection of operation with this yoke plate adaptation, and assemble left and right link plate clamping tool;
2. jig is installed between the yoke plate of two ends; Left and right link plate clamping tool is connected on the yoke plate of two ends, and high strength cord is set around between two assembly pulleys of left and right link plate clamping tool, and walk around insulation fixed pulley;
3. tighten up assembly pulley, unclamp insulator string; By tension high strength cord operating free end to tighten up assembly pulley, make wire in tightening up state, then unclamp insulator string;
4. change insulator string, and recover assembly pulley, remove jig; Change after insulator string, unclamped high strength cord, can recover assembly pulley, then removed jig of the present invention, completed the operation of earth potential method hot-line insulator string replacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085733.XA CN103872621B (en) | 2014-03-10 | 2014-03-10 | A kind of earth potential method charged changing tension-resisting insulator fixture and operational method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410085733.XA CN103872621B (en) | 2014-03-10 | 2014-03-10 | A kind of earth potential method charged changing tension-resisting insulator fixture and operational method |
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| Publication Number | Publication Date |
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| CN103872621A true CN103872621A (en) | 2014-06-18 |
| CN103872621B CN103872621B (en) | 2016-08-24 |
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| CN201410085733.XA Active CN103872621B (en) | 2014-03-10 | 2014-03-10 | A kind of earth potential method charged changing tension-resisting insulator fixture and operational method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283146A (en) * | 2014-07-07 | 2015-01-14 | 中国南方电网有限责任公司超高压输电公司南宁局 | Device and method for replacing insulator string |
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| CN202797769U (en) * | 2012-09-14 | 2013-03-13 | 国家电网公司 | Tool for live replacement of insulator on portal pole side phase of 110kV line |
| CN202872263U (en) * | 2012-11-14 | 2013-04-10 | 湖南省电力公司长沙电业局 | Tool charged for replacing double strings of insulators of double bundle conductors of straight line pole |
| US20130269180A1 (en) * | 2010-12-28 | 2013-10-17 | Hebei Electric Power Maintenance Company | Maintenance tool for insulator of direct current transmission line |
| CN203747302U (en) * | 2014-03-10 | 2014-07-30 | 国家电网公司 | Clamping fixture for live-line replacement of dead-end insulator string by use of ground potential method |
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011010495A (en) * | 2009-06-26 | 2011-01-13 | Tokyo Electric Power Co Inc:The | Method for replacing support bolt of insulator string for power transmission, and fittings used therefor |
| CN101820144A (en) * | 2010-03-26 | 2010-09-01 | 福建省电力有限公司莆田电业局 | Special tool of live line work for replacing rectilinear insulator string of large-section double multiple wire |
| US20130269180A1 (en) * | 2010-12-28 | 2013-10-17 | Hebei Electric Power Maintenance Company | Maintenance tool for insulator of direct current transmission line |
| CN202050191U (en) * | 2011-05-03 | 2011-11-23 | 刘治勇 | Clamp for changing strain insulator string |
| CN102882153A (en) * | 2012-08-30 | 2013-01-16 | 国家电网公司 | Multi-return tower middle-phase insulator string replacement method for electrified replacement circuit |
| CN202797769U (en) * | 2012-09-14 | 2013-03-13 | 国家电网公司 | Tool for live replacement of insulator on portal pole side phase of 110kV line |
| CN202872263U (en) * | 2012-11-14 | 2013-04-10 | 湖南省电力公司长沙电业局 | Tool charged for replacing double strings of insulators of double bundle conductors of straight line pole |
| CN203747302U (en) * | 2014-03-10 | 2014-07-30 | 国家电网公司 | Clamping fixture for live-line replacement of dead-end insulator string by use of ground potential method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104283146A (en) * | 2014-07-07 | 2015-01-14 | 中国南方电网有限责任公司超高压输电公司南宁局 | Device and method for replacing insulator string |
| CN104283146B (en) * | 2014-07-07 | 2017-01-04 | 中国南方电网有限责任公司超高压输电公司南宁局 | A kind of device and method changing insulator chain |
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| Publication number | Publication date |
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| CN103872621B (en) | 2016-08-24 |
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