CN201318119Y - L-shaped insulating ladder for live-wire operation of strong electric field - Google Patents
L-shaped insulating ladder for live-wire operation of strong electric field Download PDFInfo
- Publication number
- CN201318119Y CN201318119Y CNU2008201539423U CN200820153942U CN201318119Y CN 201318119 Y CN201318119 Y CN 201318119Y CN U2008201539423 U CNU2008201539423 U CN U2008201539423U CN 200820153942 U CN200820153942 U CN 200820153942U CN 201318119 Y CN201318119 Y CN 201318119Y
- Authority
- CN
- China
- Prior art keywords
- insulation
- climbing
- ladder
- highfield
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Ladders (AREA)
Abstract
The utility model relates to an L-shaped insulating ladder for live-wire operation of a strong electric field, and is used for the overhaul of electric transmission lines in the strong electric field of 220 kv to 500 kv. The insulating ladder is characterized in that the L-shaped insulating ladder for live-wire operation of a strong electric field is formed by combining an insulating hard ladder with two guard bars, and an insulating climbing pole, wherein, the insulating hard ladder with two guard bars comprises two guard bars with two side edges, and a plurality of crosspieces; both ends of each crosspiece are connected between the guard bars with two side edges, and the crosspieces are arranged at intervals; the guard bars with two side edges, and the crosspieces arranged at intervals between the guard bars with two side edges are made of insulating materials; the insulating climbing pole is rotatably connected to one end of the insulating hard ladder; the included angle between the insulating climbing pole and the guard bars with two side edges can be adjusted; and the insulating hard ladder with two guard bars, and the insulating climbing pole are formed by rotatably folding and connecting two to four segments. The utility model has simple structure, and convenient use and transportation, and the operation length can be adjusted arbitrarily, so that the insulating ladder is suitable for strong electric fields with small operation combination gaps.
Description
Technical field
The utility model relates to a kind of livewire work insulating ladder, and in detail, the utility model relates to a kind of highfield livewire work when being used to enter 220 kilovolts～500 kilovolts highfields and carrying out livewire work with L type insulating ladder.
Background technology
When transmission line of electricity being carried out overhaul of the equipments or equipment is transformed, need bus is repeatedly had a power failure, thus, bring influence for the production in the area that has a power failure, life, cause economic loss.Simultaneously, also make troubles, even cause the generation of safety problem to the operator.Therefore, livewire work is a kind of important, the special operation of under the charging operation state transmission line of electricity being overhauled, transforming, and also is the demand for development of field of power transmission.
Transmission line of electricity is being carried out overhaul of the equipments or equipment is being transformed; particularly and when carrying out livewire work to being in that 220 kilovolts～500 kilovolts transmission lines of electricity under the highfield carry out overhaul of the equipments or transformation; influencing the efficient of its operation and the factor of security performance has many; wherein, operation combinational gap, the sub-sheet number of good insulation, protection gap, tower selection, operating type all have significant impact to livewire work safety.
For avoiding occurring the problems referred to above, use the sub-sheet number of good insulation, protection gap, tower to select or use the ladder of tape insulation at present mostly, under the situation that lead is not had a power failure, equipment is overhauled or transforms.
Yet operation combinational gap and operating type also are the charged key factors of carrying out the safety of upkeep operation of influence.The operation combinational gap promptly refers under 220 kilovolts～500 kilovolts highfields, when the operating personnel is entering this electric field and distance between the electric fixtures such as lead, iron tower, cross-arm and the required distance that comprehensively forms thereof.Operating type promptly refers under 220 kilovolts～500 kilovolts highfields, the operating type of operating personnel when entering this electric field.
Usually, can think, under 220 kilovolts～500 kilovolts highfields, the distance that should note when entering this electric field of operating personnel mainly contains:
1 equipotential personnel can upright walking zone and the distance of lead hanging point along lead,
The length of 2 lifting metal tools (or material)
3 hang rope ladders when advancing (going out) current potential to the distance of scissors crossing thing.
For this reason, " electrical safe working order " regulation: 500kV equipotential personnel distance to the ground is not less than 3.6m.In addition, require 500kV livewire work combinational gap to be not less than 4m.Deduct just that the clearance of electrical body and ground is not less than 4m after the length of metal tools (or material).Whether meet the demands at preceding its operation combinational gap that will check of reality lifting metal tools (or material).
For this reason, can control well and enter the various distances of livewire work when on-the-spot, that is, the distance of electric fixturess such as operating personnel and lead, iron tower, cross-arm and the operation combinational gap that comprehensively forms thereof, and can control operating type well and determining whether safety of livewire work to a great extent.Yet up to now, highfield livewire work insulating ladder the when operating personnel enters 220 kilovolts～500 kilovolts highfields and operating type thereof are still failed to consider the operation combinational gap and are effectively solved.
Summary of the invention
For overcoming the problems referred to above, on the basis of the utility model people switching impulse flash-over characteristic of the livewire work combinational gap of phase, strain insulator-string in 220 kilovolts～500 kilovolts transmission line of electricity tangent tower limit phases, wineglass tower, carry out the computational analysis of livewire work level of significance, take into full account on the basis of livewire work combinational gap, provide a kind of 220 kilovolts～500 kilovolts highfield hotline maintenances to enter with highfield livewire work L type insulating ladder.
Transportation and conveniently adjusted operation length are convenient in the operation combinational gap requirement that described highfield livewire work of the present utility model is simple in structure, easy to use with L type insulating ladder, satisfy the hotline maintenance operation.
For achieving the above object, highfield livewire work of the present utility model is as follows with the technical scheme of L type insulating ladder.
A kind of highfield livewire work L type insulating ladder, described highfield livewire work is used for 220 kilovolts～500 kilovolts power transmission lines overhauling usefulness under the highfield with L type insulating ladder, it is characterized in that,
Described highfield livewire work is combined by hard ladder of two guard bar type insulation and insulation pole-climbing with L type insulating ladder, the hard ladder of described pair of guard bar type insulation by two dual side-edge guard bars is connected therebetween with this dual side-edge guard bar with two ends, interval and many crosspieces putting constitute, described dual side-edge guard bar and between interval and the crosspiece put is an insulation materials system;
Be in the described insulation pole-climbing that is rotatably connected of the hard terraced end of described insulation, described insulation pole-climbing is with respect to the adjustable included angle joint of described side guard bar;
The described pair of hard ladder of guard bar type insulation is made of the 2-4 section, and the hard ladder of two guard bar type insulation of described 2-4 section is by rotatable folding the connection;
Described insulation pole-climbing is made of the 2-4 section, rotatable folding connection of the insulation pole-climbing of described 2-4 section.
, it is characterized in that with L type insulating ladder according to highfield livewire work of the present utility model, in described insulation pole-climbing, about alternately and dispose a plurality of pin that form by insulation materials with separating predetermined distance and follow closely.
With L type insulating ladder, it is characterized in that according to highfield livewire work of the present utility model described insulation pole-climbing is single pole type insulation pole-climbing.
, it is characterized in that with L type insulating ladder according to highfield livewire work of the present utility model, on a side guard bar that is in the hard terraced end of described insulation, be provided with fixture, by the clamp structure described insulation pole-climbing that on this fixture, has been rotatably connected.
With L type insulating ladder, it is characterized in that according to highfield livewire work of the present utility model described insulation pole-climbing rotates, folds at the length direction perpendicular to the hard ladder of two guard bar type insulation.
According to highfield livewire work of the present utility model L type insulating ladder, it is characterized in that described insulation pole-climbing rotates, folds at the length direction that is parallel to the hard ladder of two guard bar types insulation.
, it is characterized in that with L type insulating ladder according to highfield livewire work of the present utility model,
On the side guard bar in described two side guard bars, stretching out is connected with extension, and the top of this extension is equipped with rubber tube parallel with described crosspiece and that length is shorter than described crosspiece.
According to highfield livewire work of the present utility model L type insulating ladder, it is characterized in that the described pin nail external surface that is in described crosspiece external surface, the described extension external surface of the hard terraced leftmost side of described insulation and is in described insulation pole-climbing top is coated with rubber.
With L type insulating ladder, it is characterized in that according to highfield livewire work of the present utility model described pin nail is insulation pipe or the square tube with certain-length.
With L type insulating ladder, it is characterized in that each segment length 1.5-2.5m of the hard ladder of described insulation, each segment length 2-3m of described insulation pole-climbing according to highfield livewire work of the present utility model.
With L type insulating ladder, provide a kind of 220 kilovolts～500 kilovolts highfield hotline maintenances to enter according to highfield livewire work of the present utility model with highfield livewire work L type insulating ladder.Described highfield livewire work is simple in structure with L type insulating ladder, by unscrewing clamp structure, with regard to adjustable, insulating pole-climbing and the angle between the hard ladder of insulating, regulate the length of the hard ladder of described insulation, easy to use, when not using, can utilize the connector of the middle place setting at place and described insulation pole-climbing in the middle of described side guard bar, to insulate firmly by unscrewing clamp structure, the described side guard bar and the pole-climbing of ladder fold, reducing institute takes up space, be convenient to transportation, the utility model is particularly suited for 220 kilovolts～500 kilovolts little highfield hotline maintenances of operation combinational gap and enters the livewire work of using highfield.
Description of drawings
Fig. 1 is the schematic diagram of highfield livewire work of the present utility model with L type insulating ladder.
Fig. 2 is burst is rotated in highfield livewire work of the present utility model with L type insulating ladder a connection diagram.
Fig. 3 is the stereogram of highfield livewire work of the present utility model with L type insulating ladder.
Fig. 4 is the crosspiece extension schematic diagram of highfield livewire work of the present utility model with L type insulating ladder one end.
The specific embodiment
Below, with reference to accompanying drawing, describe the structure of highfield livewire work of the present utility model in detail with L type insulating ladder.
Shown in Fig. 1-4, highfield livewire work of the present utility model is combined by hard ladder 1 of two guard bar type insulation and single pole type insulation pole-climbing 10 with L type insulating ladder.The hard ladder of the insulation 1 many crosspieces 3 of fixedlying connected, being spaced from each other predetermined distance by two side guard bars of two side guard bars 2,2 made of insulating material and two ends and these 2,2 constitute.The highfield livewire work of present embodiment respectively has 2 sections respectively with the hard ladder 1 of two guard bar types insulation of L type insulating ladder and single pole type insulation pole-climbing 10 and combines.There is hinge through to connect between its two sections respectively.Reaching the angle theta that rotation forms between described pair of hard ladder 1 of guard bar type insulation and the single pole type insulation pole-climbing 10 between described two sections hard ladders 1 of two guard bar type insulation can regulate.
On the side guard bar 2 in two side guard bars 2,2, being in stretches out on the hard ladder of insulation 1 one sides, the side guard bar 2 for fixing to crosspiece 3 one ends is connected with extension 4, the top of this extension is equipped with and length parallel with crosspiece 3 rubber tube 5 shorter than crosspiece 3, and this rubber tube 5 is for fixing on the cross-arm.
Be in the side guard bar 2 that the hard ladder 1 of insulation is used to connect a side of single pole type insulation pole-climbing 10, be provided with fixture 6, by clamp structure (is fastening bolt in the present embodiment, not shown) fixedly connected insulation pole-climbing 10 on this fixture 6, the pole-climbing 10 of insulating rotates, folds perpendicular to the length directions of the hard ladder 1 of two guard bar types insulation relatively.
In insulation pole-climbing 10, about alternately and dispose a plurality of pin that form by insulation materials with separating predetermined distance and follow closely 7, it is insulation pipe or the square tubes with certain-length that this pin follows closely 7, is used for operating personnel's climbing.
Place in the middle of place in the middle of the side guard bar 2,2 and insulation pole-climbing 10 is provided with the connector 8 that can be fastenedly connected each other respectively by clamp structure (for fastening bolt, not shown in the present embodiment).This connector 8 can be combined into the hard ladder 1 of two guard bar types insulation of 2-4 section or single pole type insulation pole-climbing 10 rotatable, folding, or it is trapezoidal to rotate the deployable growth in back.
B, D place are respectively the burst of hard ladder of insulation and insulation pole-climbing; The C place is the terraced firmly and insulation pole-climbing junction of the hard terraced insulation of L type of insulating, the employing bolt, and can adjust the angle terraced firmly and pole-climbing of insulating that insulate thus.
In addition, in the present embodiment, be in the hard ladder 1 of insulation and be used to connect side guard bar 2 and top rail 3 external surfaces, extension 4 external surfaces of a side of single pole type insulation pole-climbing 10 and the pin that is in insulation pole-climbing 10 tops and follow closely 7 external surfaces and be coated with rubber, prevent the lead that weares and teares.
Adopt said structure, the livewire work personnel in use, can regulate the angle theta of insulation pole-climbing 10 according to occasion with respect to side guard bar 2, the highfield livewire work is fixed on L type insulating ladder two ends on 220 kilovolts～500 kilovolts all kinds of turriforms and lead, enters the livewire work that the little highfield of operation combinational gap carries out conventional maintenance and scrap build.When not using the highfield livewire work with L type insulating ladder, loosen the middle place of side guard bar 2,2 and the middle fastening bolt of locating on the connector 8 of insulation pole-climbing 10, make side guard bar 2,2 and pole-climbing 10 in centre place's bending, gathering, fold, be convenient to transportation, and utilize the middle place of side guard bar 2,2 and the middle connector of locating 8 of insulation pole-climbing 10, can adjust operation length arbitrarily.
Except the length direction of insulation pole-climbing 10 opposing parallel in the hard ladder 1 of two guard bar type insulation rotates, folds, side guard bar 2 and top rail 3 external surfaces thereof are coated with rubber, prevent to wear and tear outside the lead, other make highfield livewire work of the present utility model L type insulating ladder as embodiment 1.
Except respectively having 3 sections respectively with the hard ladder 1 of two guard bar types insulation of L type insulating ladder and single pole type insulation pole-climbing 10, the highfield livewire work of present embodiment combines.Have respectively between its each two sections outside the hinge through connection, other make highfield livewire work of the present utility model L type insulating ladder as embodiment 1.
The highfield livewire work that the foregoing description is made is transported to operation field with L type insulating ladder after folding, one end hook of the hard ladder 1 of two guard bar type insulation is hung, is fixed on the cross-arm, after launching other end remainder, launch to be connected in the single pole type insulation pole-climbing 10 of hard terraced 1 other end of two guard bar type insulation again, be hooked on the wire line of Awaiting Overhaul.Not enough as length, the folded part of then deployable described single pole type insulation pole-climbing 10.Thus, can regulate the angle theta of insulation pole-climbing 10 according to occasion with respect to side guard bar 2, the highfield livewire work is fixed on L type insulating ladder two ends on 220 kilovolts～500 kilovolts all kinds of turriforms and lead, enter the little highfield of operation combinational gap and carry out the livewire work of conventional maintenance and scrap build, simultaneously, fully satisfy the requirement of operation combinational gap and operating type.That is, under 220 kilovolts～500 kilovolts highfields, when the operating personnel is entering this electric field and distance and comprehensive distance requirement thereof between the electric fixtures such as lead, iron tower, cross-arm.
According to highfield livewire work of the present utility model L type insulating ladder, simple in structure, by unscrewing clamp structure, with regard to adjustable, insulating pole-climbing and the angle between the hard ladder of insulating, regulate the length of the hard ladder of described insulation, easy to use, when not using, can utilize the connector of the middle place setting at place and described insulation pole-climbing in the middle of described side guard bar, to insulate firmly by unscrewing clamp structure, the described side guard bar and the pole-climbing of ladder fold, reduce institute and take up space, be convenient to transportation, the utility model is particularly suited for 220 kilovolts～500 kilovolts little highfield hotline maintenances of operation combinational gap and enters the livewire work of using highfield.
Claims (9)
1. a highfield livewire work is with L type insulating ladder, it is characterized in that, described highfield livewire work is combined by hard ladder of two guard bar type insulation and insulation pole-climbing with L type insulating ladder, the hard ladder of described pair of guard bar type insulation by two dual side-edge guard bars is connected therebetween with this dual side-edge guard bar with two ends, interval and many crosspieces putting constitute, described dual side-edge guard bar and between interval and the crosspiece put is an insulation materials system; Described insulation pole-climbing is rotationally connected with the hard terraced end of described insulation, and described insulation pole-climbing is regulated with respect to the angle of described side guard bar is rotatable; The described pair of hard ladder of guard bar type insulation is made of the 2-4 section, rotatable folding connection of the hard ladder of two guard bar type insulation of described 2-4 section; Described insulation pole-climbing is made of the 2-4 section, rotatable folding connection of the described insulation pole-climbing of described 2-4 section.
2. highfield livewire work as claimed in claim 1 is characterized in that with L type insulating ladder, in described insulation pole-climbing, about alternately and dispose a plurality of pin that form by insulation materials with separating predetermined distance and follow closely.
3. highfield livewire work as claimed in claim 1 is characterized in that with L type insulating ladder described insulation pole-climbing is single pole type insulation pole-climbing.
4. highfield livewire work as claimed in claim 1 is characterized in that with L type insulating ladder, is provided with fixture on the side guard bar that is in the hard terraced end of described insulation, by the clamp structure described insulation pole-climbing that has been rotatably connected on this fixture.
5. highfield livewire work as claimed in claim 1 is characterized in that with L type insulating ladder described insulation pole-climbing (10) rotates, folds at the length direction perpendicular to two guard bar type hard ladders of insulation (1).
6. highfield livewire work as claimed in claim 1 L type insulating ladder is characterized in that described insulation pole-climbing (10) rotates, folds at the length direction that is parallel to two guard bar types hard ladders of insulation (1).
7. highfield livewire work as claimed in claim 1 L type insulating ladder is characterized in that,
On the side guard bar in described two side guard bars, stretching out is connected with extension, and the top of this extension is equipped with rubber tube parallel with described crosspiece and that length is shorter than described crosspiece.
8. highfield livewire work as claimed in claim 1 L type insulating ladder, it is characterized in that the described pin nail external surface that is in described crosspiece external surface, the described extension external surface of the hard terraced leftmost side of described insulation and is in described insulation pole-climbing top is coated with rubber.
9.. highfield livewire work as claimed in claim 1 is characterized in that with L type insulating ladder, each segment length 1.5-2.5m of the hard ladder of described insulation, each segment length 2-3m of described insulation pole-climbing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201539423U CN201318119Y (en) | 2008-10-10 | 2008-10-10 | L-shaped insulating ladder for live-wire operation of strong electric field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201539423U CN201318119Y (en) | 2008-10-10 | 2008-10-10 | L-shaped insulating ladder for live-wire operation of strong electric field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201318119Y true CN201318119Y (en) | 2009-09-30 |
Family
ID=41196885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201539423U Expired - Lifetime CN201318119Y (en) | 2008-10-10 | 2008-10-10 | L-shaped insulating ladder for live-wire operation of strong electric field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201318119Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952553A (en) * | 2018-08-01 | 2018-12-07 | 国网浙江省电力有限公司金华供电公司 | Ground electrode circuit Equipotential ladder and its application method |
| CN109638715A (en) * | 2018-12-26 | 2019-04-16 | 国网福建省电力有限公司宁德供电公司 | The hard ladder of the mobile insulation of hot line maintenance and its working method |
-
2008
- 2008-10-10 CN CNU2008201539423U patent/CN201318119Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952553A (en) * | 2018-08-01 | 2018-12-07 | 国网浙江省电力有限公司金华供电公司 | Ground electrode circuit Equipotential ladder and its application method |
| CN108952553B (en) * | 2018-08-01 | 2023-12-05 | 国网浙江省电力有限公司金华供电公司 | Grounding electrode line equipotential ladder and use method thereof |
| CN109638715A (en) * | 2018-12-26 | 2019-04-16 | 国网福建省电力有限公司宁德供电公司 | The hard ladder of the mobile insulation of hot line maintenance and its working method |
| CN109638715B (en) * | 2018-12-26 | 2024-05-10 | 国网福建省电力有限公司宁德供电公司 | Movable insulating hard ladder for live working of power transmission line and working method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102510039B (en) | Multifunctional direct-current ice melting automatic conversion circuit and conversion method thereof | |
| CN103490363B (en) | Rapid Direct-current deicing short circuit device of electric transmission line | |
| CN102623926B (en) | Distant equipotential tackle and method for realizing charged equipotential access by using same | |
| CN102136693B (en) | Method and device for realizing long-distance equal electric potential access of winch hanging basket guide rail | |
| KR101455281B1 (en) | Apparatus for fixing bundled cable of electric power transmission lines | |
| CN105071296A (en) | Structurally-improved high-voltage distribution line rod pole-mounted line hoisting device | |
| CN105826889A (en) | Transmission line charged segmented DC ice melting method | |
| CN201318119Y (en) | L-shaped insulating ladder for live-wire operation of strong electric field | |
| CN103001141A (en) | Method for mounting anti-waving spacers on 66-kilovolt power transmission hot-line | |
| CN102623927B (en) | Charged for replacement 220kV circuit multiloop double bundle conductor insulator tool and method | |
| CN202602171U (en) | A tool for power-on replacing multi-loop double split conductor insulator of 220kV line | |
| CN107809091A (en) | A kind of double bundle conductor conductor spacer installs auxiliary rod | |
| CN209488052U (en) | An a kind of transmission line of electricity leap point block device | |
| CN103825222B (en) | A kind of charged for replacement 220kV narrow base tower strain insulator string instrument | |
| CN201440584U (en) | Ground potential replacement device for tension tower insulators and accessories in power transmission line | |
| CN206575086U (en) | Insulate turnbuckle plate pulling device | |
| CN201584691U (en) | Special tool for 220KV double-circuit common-tower line accessing tension-resistance high-pressure high-electric field | |
| CN205882560U (en) | Special circulation cord rack device of distribution live working earth potential | |
| CN204632959U (en) | A kind of for filling, the device of dismounting ground wire | |
| CN203813320U (en) | Tool for live exchange of 220 kV narrow base tower strain insulator string | |
| CN102064498A (en) | New line bridging method and special bridging line | |
| CN202706642U (en) | Annular concrete pole tower provided with anti-dropping device | |
| CN102882154B (en) | A kind of installation clamp of live line working wire clamp | |
| CN206506223U (en) | One kind changes 220kV common-tower double-return linear insulator maintenance ladders | |
| CN106253144B (en) | Ground potential fast-assembling synthetic insulator preventing wind drift conducting wire installation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC POWER CORP. Free format text: FORMER OWNER: SHANGHAI ULTRA-HV TRANSMISSION + DISTRIBUTION COMPANY, SHANGHAI ELECTRIC POWER C Effective date: 20110519 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200063 NO. 600, WUNING ROAD, PUTUO DISTRICT, SHANGHAI TO: 200122 NO. 1122, YUANSHEN ROAD, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110519 Address after: 200122, 1122 deep road, Shanghai Patentee after: Shanghai Electric Power Corporation Address before: 200063 No. 600, Wuning Road, Shanghai, Putuo District Patentee before: Shanghai Ultra-HV Transmission & Distribution Company, Shanghai Electric Power C |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090930 |
|
| CX01 | Expiry of patent term |