CN101232158A - Equipotential operating curve ladder - Google Patents
Equipotential operating curve ladder Download PDFInfo
- Publication number
- CN101232158A CN101232158A CNA2008100704678A CN200810070467A CN101232158A CN 101232158 A CN101232158 A CN 101232158A CN A2008100704678 A CNA2008100704678 A CN A2008100704678A CN 200810070467 A CN200810070467 A CN 200810070467A CN 101232158 A CN101232158 A CN 101232158A
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- ladder
- crossbearer
- operating curve
- equipotential operating
- equipotential
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims abstract description 13
- 239000011810 insulating material Substances 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 22
- 230000005684 electric field Effects 0.000 abstract description 13
- 238000007796 conventional method Methods 0.000 abstract description 3
- 239000012212 insulator Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
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Abstract
The invention discloses an equal-potential bending ladder for operation, which comprises a straight ladder and a cross frame, which are made of an insulating material and are crossed and connected with each other, wherein a cross arm connector capable of being firmly connected with a cross arm angle steel of a pole tower is arranged at the outer end section of the cross frame. The invention has the advantages that the bending ladder provides an ideal bending space channel into the electric field in the most proper space position for a plurality of pole towers which have compact wirings and no entry to the electric field by a conventional method. Moreover, a minimal distance value of grounding potential generated corresponding to the introduction of the cross frame can widen the combination gap, so that the equal-potential bending ladder can acquire a safe combination gap so as to enable an entry to the electric field to execute equal-potential operation.
Description
Technical field
The present invention relates to a kind of power tool that is used for overhead transmission line, particularly a kind of Equipotential operating curve ladder.
Background technology
According to live line working regulation in " State Grid Corporation of China's electric power safety working regulation " (power circuit part), operation process medium potential operating personnel's combinational gap must meet the demands, combinational gap is made up of S1+S2, wherein S1 is the earthy minimum range of equipotential electrician distance, and S2 is the minimum range of equipotential electrician apart from live wire.
In the high-tension line of many wiring on the same tower, lead adopts vertical arrangement, and distance between last phase-middle phase-following phase cross-arm and the distance that goes up between phase conductor-middle phase cross-arm or the middle phase conductor-following phase cross-arm are very compact.At this moment,, for example, enter along insulator string when changing the insulator operation in the electric field process with insulation rope,, can't carry out equal potential working because combinational gap can not meet the demands at high tower according to the routine work method.
Summary of the invention
The objective of the invention is to overcome weak point of the prior art, and provide a kind of on the shaft tower of lead employing vertical arrangement, phase spacing compactness, guarantee that the equal potential working personal security enters the Equipotential operating curve ladder of electric field.
The objective of the invention is to realize by following approach.
Equipotential operating curve ladder, its structural feature is: this curved ladder comprises vertical ladder and crossbearer, and vertical ladder and crossbearer are made by insulating material, the two intersection and connection, the crossbearer outer end be provided with a kind of can with the fastening cross-arm connector that connects of shaft tower cross-arm angle steel.
During use, the electrician hangs on Equipotential operating curve ladder and with fastening connection of cross-arm angle steel of appropriate location, crossbearer outer end and insulator string top, simultaneously the vertical ladder lower end is supported on the lead, thereby has formed a kind of ladder that bends shape on the tower.Equipotential electrician Deng Ta is to the service position, under the cooperation of electrician on the tower, after entering the crossbearer of Equipotential operating curve ladder from insulator string top, laterally move to vertical ladder along crossbearer, and enter electric field vertically downward along vertical ladder and carry out live line working, operation finishes, and equipotential electrician withdraws from electric field in former road from lead along Equipotential operating curve ladder.
Like this, utilizing should be curved terraced, that has set up a bending shape from only locus enters the desirable passage of electric field space, and, the intervention of crossbearer the above earth potential lowest distance value of corresponding generation, increased combinational gap, make occasion compact in many wirings, can't enter electric field according to conventional method, utilize Equipotential operating curve ladder of the present invention can obtain safe combinational gap, enter electric field smoothly and carry out equal potential working.
The formed bending of this Equipotential operating curve ladder shape ladder, the equal potential working electrician when being positioned at the two ends of bending shape ladder, the combinational gap minimum.When being in the crossbearer external end head, be zero apart from earthy minimum range, and apart from the minimum range of live wire for the crossbearer external end head to the oblique line length between vertical ladder bottom and lead support place; And when being in vertical ladder bottom and lead support place, be zero apart from the minimum range of live wire, and apart from earthy minimum range for the crossbearer external end head to the oblique line length between vertical ladder bottom and lead support place.In addition, when the equal potential working electrician was in any position on the bending shape ladder beyond the two ends, combinational gap was all greater than the combinational gap at above-mentioned two ends place.According to the acquisition mode of this combinational gap, those skilled in the art are according to the shaft tower actual conditions, and corresponding national combinational gap safety requirements, just can determine the length of crossbearer and vertical ladder.
Purpose of the present invention can also realize by following approach.
The concrete form of cross-arm connector has multiple choices, because cross-arm generally is to be assembled by angle steel, therefore, can be suitable for the fastening device that connects of angle steel in the prior art.Below provide a kind of preferred:
The cross-arm connector comprises main body, pressing plate and fastening bolt, bottom part body is connected with the crossbearer termination, main body riser side bottom has the groove that a kind of cross-arm angle steel wing plate end can embed, the fastening bolt of crossbearer above the main body riser links together main body riser and pressing plate, and the pressing plate lower end has a kind of bending head that can connect with another wing plate end hook of cross-arm angle steel.
Like this, can securely the cross-arm angle steel be fastened between main body riser and the pressing plate.
Main body can be to fixedly connected with the connected mode of crossbearer termination, but preferably hinged.
Main body can directly be connected with the crossbearer termination, also can be connected with the crossbearer termination by a kind of middleware again.Middleware preferably a kind of " U " link, Open Side Down and hinged with the crossbearer termination for it, and its top and main body are hinged, and two hinged axle center are vertical mutually.
Like this, the relative crossbearer of main body termination has obtained the revolution remaining of two direction in spaces, makes convenient being fastenedly connected with crossbearer in the practical operation of high-altitude of curved ladder.
The concrete structure of crossbearer has multiple choices:
It can be a kind of flat board, it also can be the gangboard of step spaced apart on flat board, the contour structures of this gangboard is identical with the wheel used springboard of beaching, and can also be a kind of ladder, can be again by parallel and the spaced apart and affixed all-in-one-piece framework of the identical bar of complex root length.
And vertical ladder is a kind of ladder with step.
The fastening connection by a kind of position adjusting mechanism between crossbearer and the vertical ladder.
Can adjust the joint of vertical ladder and crossbearer by this position adjusting mechanism, thereby be able to adjust this joint to the length between lead according to actual conditions.
Position adjusting mechanism can have various ways, below is wherein two kinds:
Its length direction of vertical ladder upper edge is intervally distributed with connecting hole, and a kind of bolt passes hole on this hole and the crossbearer and fastening connection crossbearer and vertical ladder;
Vertical ladder top has a kind of naked bar section that does not have step, and the crossbearer inner termination is installed with a kind of bar cover of hollow, and naked bar section is set in this bar cover, and a kind of end face trip bolt that is threaded in the bar cover is fixed on the naked bar section outer wall.
The vertical ladder hypomere is installed with a kind of and the supporting mechanisms lead support and connection.
Generally speaking, utilize the nethermost step of vertical ladder just can support wire.Support firmly for asking, can ad hoc a kind of supporting mechanism.This supporting mechanism is in the particular location and the multiple choices of vertical ladder hypomere:
Supporting mechanism or be positioned at vertical ladder side lever bottom head, or be positioned on the vertical ladder step lateral symmetry center, as preferably, preferably be positioned on the vertical ladder step lateral symmetry center, like this, that will support is more firm.
The structure that can be supported in the prior art on the lead can be selected for use, below is wherein a kind of preferred:
Supporting mechanism is a kind of inner groovy.
During support, lead contained be enclosed within this inner groovy.
In the above-mentioned inner groovy, preferably also be embedded with a kind of jump ring that is bent into fluted body by spring leaf.
With this jump ring clamping lead, that can support is more firm.
Preferably outer the opening of jump ring port is the enlarging type.
As preferably, the degree of depth of above-mentioned inner groovy should be more than 1.5 times of diameter of wire, the 1.01-1.5 that the width of inner groovy should be diameter of wire doubly between.
Can obtain the effect of similar clamping like this, to obtain more firm support.
In sum, the present invention has following advantage compared to existing technology: the shaft tower that can't enter electric field for many wiring compactnesses, according to conventional method, that has set up a bending shape from only locus enters the desirable passage of electric field space, and, the intervention of crossbearer the above earth potential lowest distance value of corresponding generation, increased combinational gap, made and utilizing Equipotential operating curve ladder of the present invention can obtain safe combinational gap, entered electric field smoothly and carry out equal potential working.
Description of drawings
Fig. 1 is the structural representation of the equal potential working platform of the embodiment of the invention 1
Fig. 2 is the structural representation of the cross-arm connector of embodiment 1
The vertical ladder structural representation of Fig. 3 embodiment 1
Fig. 4 is the crossbearer structural representation of embodiment 1
Fig. 5 is the crossbearer structural representation of embodiment 2
Label declaration 1 vertical ladder 2 crossbearers 21 cross-arm connectors 211 main bodys 2111 bottom part body 212 pressing plates 2121 bending heads 213 fastening bolts 215 main body risers 2151 grooves 216 middlewares 3 position adjusting mechanisms 31 bars overlap 32 trip bolts, 4 supporting mechanisms, 41 inner groovies, 42 jump rings
Embodiment
Below in conjunction with embodiment the present invention is described in more detail.
Embodiment 1
A kind of Equipotential operating curve ladder shown in Fig. 1-4, this curved ladder comprises vertical ladder 1 and crossbearer 2, vertical ladder and crossbearer are made by insulating material, the two intersection and connection, the crossbearer outer end be provided with a kind of can with the fastening cross-arm connector 21 that connects of shaft tower cross-arm angle steel.Described cross-arm connector 21 comprises main body 211, pressing plate 212 and fastening bolt 213, bottom part body 2111 is connected with the crossbearer termination, main body riser 215 side bottoms have the groove 2151 that a kind of cross-arm angle steel wing plate end can embed, the fastening bolt of crossbearer above the main body riser links together main body riser and pressing plate, the pressing plate lower end have a kind of can with the bending head 2121 of another wing plate hook termination of cross-arm angle steel.The connected mode of main body and crossbearer termination is for hinged with the crossbearer termination again by a kind of middleware 216.Described middleware is " U " link, and Open Side Down and hinged with the crossbearer termination for it, and its top and main body are hinged, and two hinged axle center are vertical mutually.The gangboard of described crossbearer step spaced apart on flat board, the contour structures of this gangboard is identical with the wheel used springboard of beaching.Described vertical ladder is a kind of ladder with step.The fastening connection by a kind of position adjusting mechanism 3 between crossbearer and the vertical ladder, described position adjusting mechanism is a kind of naked bar section that does not have step for vertical ladder top has, the crossbearer inner termination is installed with a kind of bar cover 31 of hollow, naked bar section is set in this bar cover, and a kind of end face trip bolt 32 that is threaded in the bar cover is fixed on the naked bar section outer wall.The vertical ladder hypomere is installed with a kind of and the supporting mechanisms 4 lead support and connection, and supporting mechanism is positioned on the vertical ladder step lateral symmetry center, and like this, that will support is more firm.Described supporting construction is an inner groovy 41, is embedded with a kind of jump ring 42 that is bent into fluted body by spring leaf simultaneously in groove.The degree of depth of above-mentioned inner groovy should be more than 1.5 times of diameter of wire, and the width of inner groovy should be 1.3 times of diameter of wire.
It is same as the prior art that present embodiment is not stated part.
It is identical with embodiment 1 that present embodiment is not stated part.
Claims (15)
1. Equipotential operating curve ladder, it is characterized in that: this curved ladder comprises vertical ladder (1) and crossbearer (2), vertical ladder and crossbearer are made by insulating material, the two intersection and connection, the crossbearer outer end be provided with a kind of can with the fastening cross-arm connector (21) that connects of shaft tower cross-arm angle steel.
2. Equipotential operating curve ladder according to claim 1, it is characterized in that: cross-arm connector (21) comprises main body (211), pressing plate (212) and fastening bolt (213), bottom part body (2111) is connected with the crossbearer termination, main body riser (215) side bottom has the groove (2151) that a kind of cross-arm angle steel wing plate end can embed, the fastening bolt of crossbearer above the main body riser links together main body riser and pressing plate, and the pressing plate lower end has a kind of bending head (2121) that can connect with another wing plate end hook of cross-arm angle steel.
3. Equipotential operating curve ladder according to claim 2 is characterized in that: the connected mode of main body and crossbearer termination is hinged.
4. Equipotential operating curve ladder according to claim 3 is characterized in that: main body or be connected with the crossbearer termination perhaps is connected with the crossbearer termination by a kind of middleware (216) again.
5. Equipotential operating curve ladder according to claim 4 is characterized in that: middleware preferably a kind of " U " link, and Open Side Down and hinged with the crossbearer termination for it, and its top and main body are hinged, and two hinged axle center are vertical mutually.
6. according to any one described Equipotential operating curve ladder of claim 1 to 5, it is characterized in that: described crossbearer (2) is a kind of flat board, perhaps at gangboard or a kind of ladder of step spaced apart on flat board, or by parallel and the spaced apart and affixed all-in-one-piece framework of the identical bar of complex root length.
7. Equipotential operating curve ladder according to claim 6 is characterized in that: the fastening connection by a kind of position adjusting mechanism (3) between crossbearer and the vertical ladder.
8. Equipotential operating curve ladder according to claim 7 is characterized in that: described position adjusting mechanism is that its length direction of vertical ladder upper edge is intervally distributed with connecting hole, and a kind of bolt passes hole on this hole and the crossbearer and fastening connection crossbearer and vertical ladder.
9. Equipotential operating curve ladder according to claim 7, it is characterized in that: described position adjusting mechanism is a kind of naked bar section that does not have step for vertical ladder top has, the crossbearer inner termination is installed with a kind of bar cover of hollow, naked bar section is set in this bar cover, and a kind of end face trip bolt that is threaded in the bar cover is fixed on the naked bar section outer wall.
10. it is characterized in that according to Claim 8 or 9 described Equipotential operating curve ladders: the vertical ladder hypomere is installed with a kind of and supporting mechanisms (4) the lead support and connection.
11. Equipotential operating curve ladder according to claim 10 is characterized in that: supporting mechanism or be positioned at vertical ladder side lever bottom head, or be positioned on the vertical ladder step lateral symmetry center.
12. Equipotential operating curve ladder according to claim 11 is characterized in that: supporting mechanism is a kind of inner groovy.(41)
13. Equipotential operating curve ladder according to claim 12 is characterized in that: in groove, also be embedded with a kind of jump ring (42) that is bent into fluted body by spring leaf.
14. Equipotential operating curve ladder according to claim 13 is characterized in that: preferably outer the opening of jump ring port is the enlarging type.
15. Equipotential operating curve ladder according to claim 14 is characterized in that: the degree of depth of described inner groovy should be more than 1.5 times of diameter of wire, the 1.01-1.5 that the width of inner groovy should be diameter of wire doubly between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100704678A CN101232158B (en) | 2008-01-14 | 2008-01-14 | Equipotential operating curve ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100704678A CN101232158B (en) | 2008-01-14 | 2008-01-14 | Equipotential operating curve ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101232158A true CN101232158A (en) | 2008-07-30 |
| CN101232158B CN101232158B (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100704678A Active CN101232158B (en) | 2008-01-14 | 2008-01-14 | Equipotential operating curve ladder |
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| Country | Link |
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| CN (1) | CN101232158B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412521A (en) * | 2010-09-26 | 2012-04-11 | 河南省电力公司焦作供电公司 | Live working equipment for high-voltage power transmission line |
| CN107453271A (en) * | 2017-06-20 | 2017-12-08 | 国网福建省电力有限公司泉州供电公司 | Power line tension bar intelligence outgoing line device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2094812U (en) * | 1990-12-21 | 1992-01-29 | 宁夏电力工业局银南供电局 | Equal potential insulator changing tool |
| CN201149972Y (en) * | 2008-01-11 | 2008-11-12 | 福建省厦门电业局 | Equipotential operation curved ladder |
-
2008
- 2008-01-14 CN CN2008100704678A patent/CN101232158B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412521A (en) * | 2010-09-26 | 2012-04-11 | 河南省电力公司焦作供电公司 | Live working equipment for high-voltage power transmission line |
| CN107453271A (en) * | 2017-06-20 | 2017-12-08 | 国网福建省电力有限公司泉州供电公司 | Power line tension bar intelligence outgoing line device |
| CN107453271B (en) * | 2017-06-20 | 2023-02-10 | 国网福建省电力有限公司泉州供电公司 | Intelligent wire outlet device for tension rod of power transmission line |
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| Publication number | Publication date |
|---|---|
| CN101232158B (en) | 2011-08-24 |
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| C14 | Grant of patent or utility model | ||
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Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: XIAMEN ELECTRIC POWER INDUSTRY BUREAU FUJIAN Effective date: 20121218 Owner name: FUJIAN ELECTRIC POWER CO., LTD. XIAMEN ELECTRIC PO Effective date: 20121218 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 361009 XIAMEN, FUJIAN PROVINCE TO: 100031 DONGCHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20121218 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Patentee after: State Grid Corporation of China Patentee after: Fujian Electric Power Co., Ltd. Patentee after: Xiamen Electric Power Bureau of Fujian Electric Power Company Limited Address before: Siming Lake Road Xiamen city Fujian province 361009 No. 21 Patentee before: Xiamen Electric Power Industry Bureau Fujian |