CN205159906U - Insulation of special high tension transmission line strain insulator -string is qualified for next round of competitions flexible flat terracedly - Google Patents
Insulation of special high tension transmission line strain insulator -string is qualified for next round of competitions flexible flat terracedly Download PDFInfo
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- CN205159906U CN205159906U CN201520926885.8U CN201520926885U CN205159906U CN 205159906 U CN205159906 U CN 205159906U CN 201520926885 U CN201520926885 U CN 201520926885U CN 205159906 U CN205159906 U CN 205159906U
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- flat ladder
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- string
- lower floor
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 26
- 238000009413 insulation Methods 0.000 title claims abstract description 14
- 239000012211 strain insulator Substances 0.000 title abstract 4
- 230000007246 mechanism Effects 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims description 8
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract description 3
- 239000010931 gold Substances 0.000 abstract description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
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- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to an insulation of special high tension transmission line strain insulator -string is qualified for next round of competitions flexible flat terracedly is the insulation that is used for the strain insulator -string business turn over that can be used in on the 800kV transmission line flexible cat ladder of being qualified for the next round of competitions. Its characteristics are: including the fixed flat ladder of lower floor (2), install cross arm connection end (1) thereby can be articulated with the iron tower cross arm in the one end of the fixed flat ladder of this lower floor (2), flexible pulley mechanism installs on the fixed flat ladder of this lower floor (2), install the slidable upper strata flat ladder of sliding scale (3) in this flexible pulley mechanism, cassette frame (4) are installed to the one end of the flat ladder of this upper strata sliding scale (3), install on these cassette frame (4) cassette (5) thus can the clamp on strain insulator gold utensil cluster. The utility model discloses a flexible flat ladder is owing to adopt frame construction, and upper and lower two -layer slip form increases or reduces length to adapt to different length overhead power line fitting cluster long through the flat ladder in upper strata is flexible, and the equipment is swift, and firm in connection is reliable.
Description
Technical field
The utility model relates to the flexible flat ladder of a kind of UHV transmission line strain insulator-string insulation outlet, be one can be used in ± 800kV transmission line on the insulation outlet retractable cat ladder for strain insulator-string turnover.
Background technology
Along with the continuous expansion of China's electrical network scale, improving constantly of UHV transmission, ± 800kV direct current transportation is transmission voltage the highest grade, the state-of-the-art direct current transportation mode of technology in the world.Increasing electricity conveying task is carry, so higher to the reliability requirement of circuit at China's extra-high voltage direct-current.Generally, once, other urgent defects of process circuit, can only take live line working mode to the annual interruption maintenance of extra high voltage direct current transmission line, live line working is the Main Means of power transmission and transforming equipment test, maintenance, transformation, and the fail safe of operating type is very important.In order to ensure the reliability service of UHV transmission line, improving the continuous reliability service ability of electric power system, how to ensure live-working safety, fast, becoming the important research direction of extra-high voltage electrified operation.Simultaneously, UHV transmission line turnover strain tower insulator string is a very difficult thing, one is that the prolongation gold utensil that is connected with strain insulator-string of UHV transmission line shaft tower is all in 2.5-4 rice distance, from shaft tower, operating personnel moves to that strain insulator-string carries out overhauling is a very difficult thing, personnel adopt the mode operation of climbing gold utensil turnover usually, personnel pass in and out time-consuming, effort, and coefficient of safety is low.Two be live line working during, if adopt cat ladder, cat ladder must be isolation material, could meet live line working requirement.
In sum, there is very large potential safety hazard in current turnover extra high voltage direct current transmission line strain rod tower, operating type is time-consuming, effort, so need to innovate the device that a kind of support staff passes in and out extra high voltage direct current transmission line strain insulator-string, meets the requirement of live line working simultaneously.
Utility model content
The purpose of this utility model is to provide the flexible flat ladder of a kind of UHV transmission line strain insulator-string insulation outlet, a kind of cat ladder passing in and out extra high voltage direct current transmission line strain insulator-string for less important work personnel can be provided, live line working requirement can be met simultaneously, the fail safe of raising personnel operation, ensures power circuit safe and stable operation.
The flexible flat ladder of a kind of UHV transmission line strain insulator-string insulation outlet, its special feature is: comprise the fixing flat ladder of lower floor, the one end fixing flat ladder in this lower floor is provided with cross-arm connection end thus can be hinged with steel tower cross-arm, fix on flat ladder in this lower floor and flexible pulley mechanism is installed, the flat ladder of slidably upper strata sliding extension is installed in this flexible pulley mechanism, this upper strata sliding extension put down ladder one end deck frame is installed, this deck frame is provided with deck thus can clip on strain hardware fitting string.
Wherein also comprise recovery pull rope, one end of this recovery pull rope is fixed on upper strata sliding extension and puts down on ladder.
Wherein also comprise and stretch out pull rope, this one end of stretching out pull rope is fixed on upper strata sliding extension and puts down on ladder, and its other end is fixed in the fixed pulley flat ladder from lower floor and passed.
Wherein at the two ends of deck frame, a deck is installed separately, and deck adopts U-shaped metal string deck.
Wherein flexible pulley mechanism comprises at least 4 and is arranged on lower floor and fixes pulley yoke on flat ladder, and each pulley yoke is all provided with a upper strata pulley and lower floor's pulley by wheel shaft.
Of the present utility model flexible flat terraced due to employing frame structure, upper and lower two-layer slip form, adapt to different length line hardware string by the flexible increase of the flat ladder in upper strata or minimizing length long, assembling is quick, firm and reliable connection.Flexible flat terraced termination and tower body adopt and are articulated and connected, easy to assembly.Do not need on the ground to assemble separately, operation installation on tower can be completed at that time, and just can complete rapidly maintenance task, eliminating hidden danger recovers normal power transmission.Composite material used all adopts anti-oxidant, corrosion-resistant treatments, steel construction piece adopts galvanizing surface treatment, enhance the resistance to corrosion of material, ensure that the advantages such as the good electric property of outlet retractable cat ladder, long working life, improve operating personnel and pass in and out the fail safe of extra high voltage direct current transmission line strain insulator-string, shorten the activity duration, indirectly improve electric network reliability.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of flexible pulley mechanism part in the utility model;
Accompanying drawing 2 is the structural representation of deck frame 4 and deck 5 part in the utility model;
Accompanying drawing 3 is structural representation of the present utility model.
Embodiment
As shown in Figure 1, 2, 3, the utility model provides the flexible flat ladder of a kind of UHV transmission line strain insulator-string insulation outlet, comprise the fixing flat ladder 2 of lower floor, the one end fixing flat ladder 2 in this lower floor is provided with cross-arm connection end 1 thus can be hinged with steel tower cross-arm, the fixing flat ladder 2 of this lower floor is provided with flexible pulley mechanism, the flat ladder 3 of slidably upper strata sliding extension is installed in this flexible pulley mechanism, this upper strata sliding extension put down ladder 3 one end deck frame 4 is installed, this deck frame 4 is provided with deck 5 thus can clip on strain hardware fitting string.Specifically at the two ends of deck frame 4, a deck 5 is installed separately, and deck 5 adopts U-shaped metal string deck.
Wherein flexible pulley mechanism comprises 6 and is arranged on lower floor and fixes pulley yoke 6 on flat ladder 2, each pulley yoke 6 is all provided with a upper strata pulley 9 and lower floor's pulley 10 by wheel shaft, thus between upper strata pulley 9 and lower floor's pulley 10, forms slideway to install the flat ladder 3 of slidably upper strata sliding extension.
Wherein also comprise and reclaim pull rope 8, one end of this recovery pull rope 8 is fixed on the flat ladder 3 of upper strata sliding extension.Also comprise and stretch out pull rope 7, this one end of stretching out pull rope 7 is fixed on the flat ladder 3 of upper strata sliding extension, and its other end is fixed in the fixed pulley flat ladder 2 from lower floor and passed.
Embodiment 1:
A kind of flexible flat ladder, comprise that lower floor's canned paragraph puts down terraced principal post, upper strata telescopic section puts down terraced principal post, stull cross section, other metal connecting piece materials, flat terraced termination, flexible flat terraced slide mechanism, flat terraced side of wire and hardware string clip.It is the flat plate in cross section 70 × 19 that above-mentioned lower floor's canned paragraph puts down terraced principal post, and every root length has 1.7 meters; Stull cross section
filled and process pipe; Fabric width 500.Above-mentioned upper strata telescopic section puts down the flat plate in terraced principal post cross section 70 × 19, and every root length has 1.7 meters; Stull cross section
filled and process pipe; Fabric width 430.Other metal connecting piece material is Q345.
The above-mentioned flat terraced termination being common to these two kinds of cross-arms, considers corner tower, and need there be rotatable function termination according to line alignment.Above-mentioned flexible flat terraced slide mechanism, the flat ladder of slide mechanism and lower floor is installed fixing, by (extension ladder) pulley yoke 6, axially two-layer pulley forms vertically, the principal post of ladder is just put down in gap between upper and lower layer pulley 9,10 by upper strata, have three groups of slide mechanisms and form a slideway, upper strata is put down ladder and is just utilized this slideway to realize Telescopic.Above-mentioned flat terraced side of wire and the clip of hardware string are adjustable, deck 5 is based on the flat plate of 50 × 12 by a block specifications, two ends are provided with the installing hole of U-shaped metal string deck at a distance of 650mm, 1300mm place, U-shaped metal string deck inner chamber is a bit larger tham the width of wire hardware string.
Wherein the flat ladder of insulating telescopic is two-layer up and down.Define a slideway space between the flat ladder of lower floor and pulley yoke 6, put down ladder for upper strata and realize Telescopic.Flat terraced front end deck 5 has adjustable function and can adapt to ± requirement of 800kV power line tension three string and tension resistant four-serial.Cross-arm connection end 1 and steel tower cross-arm connected mode are radial type, can follow the trend of line hardware string and rotate.
Using method of the present utility model and operation principle are:
The utility model provides one and may be used for ± the flexible flat ladder of strain insulator-string outlet of 800kV circuit, and comprise cross-arm connection end 1, the fixing flat ladder 2 of lower floor, the flat ladder 3 of upper strata sliding extension, pulley yoke 6, stretch out pull rope 7, reclaim pull rope 8 and flat terraced stopping mechanism.The principle of stopping mechanism (retrogressing) backstop is arranged on upper strata sliding extension to put down in the stull of ladder 3, and backstop is hook, and when sliding extension flat ladder 3 in upper strata stretches out to side, backstop runs into fixing flat terraced 2 stulls of lower floor and stirs and jump over.When sliding extension flat ladder 3 in upper strata withdraws to opposite side, backstop runs into the fixing flat terraced 2 stull backstops of lower floor and hooks stull make sliding extension flat ladder 3 in upper strata can not continue to withdraw action because retreating spacing obstruction.
Be connected with hinged by the construction hanging hole that cross-arm connection end 1 is reserved with steel tower cross-arm during use, pull and stretch out pull rope 7 and upper strata sliding extension is put down ladder 3 and fix by lower floor the slideway that flat ladder 2 and pulley yoke 6 formed and stretch out to strain hardware fitting string, when extending out to appropriate location, flat for upper strata sliding extension ladder 3 is fallen, make upper strata sliding extension put down terraced 3 front end deck framves 4 and deck 5 clip on strain hardware fitting string, form a stable structure frame.Now staff walks or rides on flat ladder, moves to porcelain vase side and starts to carry out work.After the rear staff that worked is back to steel tower cross-arm by former road, pull and reclaim pull rope 8 by the withdrawal of flat for upper strata sliding extension ladder 3, take the cross-arm connection end 1 be connected with steel tower cross-arm apart, then entirety falls to ground.
Those of ordinary skill in the art will be appreciated that, it is of the present utility model that above embodiment is only used to explanation, and be not used as restriction of the present utility model, as long as in spirit of the present utility model, all will drop in Claims scope of the present utility model the change of the above embodiment, modification.
Claims (5)
1. the flexible flat ladder of UHV transmission line strain insulator-string insulation outlet, it is characterized in that: comprise the fixing flat ladder (2) of lower floor, in one end of the fixing flat ladder (2) of this lower floor, cross-arm connection end (1) is installed thus can be hinged with steel tower cross-arm, the fixing flat ladder (2) of this lower floor is provided with flexible pulley mechanism, the flat ladder (3) of slidably upper strata sliding extension is installed in this flexible pulley mechanism, one end of the flat ladder (3) of this upper strata sliding extension is provided with deck frame (4), this deck frame (4) is provided with deck (5) thus can clip on strain hardware fitting string.
2. the flexible flat ladder of UHV transmission line strain insulator-string insulation outlet as claimed in claim 1, it is characterized in that: wherein also comprise and reclaim pull rope (8), one end of this recovery pull rope (8) is fixed on the flat ladder (3) of upper strata sliding extension.
3. the flexible flat ladder of UHV transmission line strain insulator-string insulation outlet as claimed in claim 1, it is characterized in that: wherein also comprise and stretch out pull rope (7), this one end of stretching out pull rope (7) is fixed on the flat ladder (3) of upper strata sliding extension, and its other end passes from the fixed pulley the fixing flat ladder (2) of lower floor.
4. the flexible flat ladder of UHV transmission line strain insulator-string insulation outlet as claimed in claim 1, it is characterized in that: wherein at the two ends of deck frame (4), a deck (5) is installed separately, and deck (5) adopts U-shaped metal string deck.
5. flat ladder as flexible in the UHV transmission line strain insulator-string insulation outlet in Claims 1-4 as described in any one, it is characterized in that: wherein flexible pulley mechanism comprises at least 4 pulley yokes (6) be arranged on the fixing flat ladder (2) of lower floor, and each pulley yoke (6) is all provided with a upper strata pulley (9) and lower floor's pulley (10) by wheel shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926885.8U CN205159906U (en) | 2015-11-19 | 2015-11-19 | Insulation of special high tension transmission line strain insulator -string is qualified for next round of competitions flexible flat terracedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520926885.8U CN205159906U (en) | 2015-11-19 | 2015-11-19 | Insulation of special high tension transmission line strain insulator -string is qualified for next round of competitions flexible flat terracedly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205159906U true CN205159906U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520926885.8U Active CN205159906U (en) | 2015-11-19 | 2015-11-19 | Insulation of special high tension transmission line strain insulator -string is qualified for next round of competitions flexible flat terracedly |
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| Country | Link |
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| CN (1) | CN205159906U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322463A (en) * | 2015-11-19 | 2016-02-10 | 国家电网公司 | Insulated outlet extending horizontal ladder for tension string on ultra-high voltage transmission line |
| CN105790161A (en) * | 2016-05-10 | 2016-07-20 | 国网湖南省电力公司带电作业中心 | Omnibearing rotary telescoping insulating ladder and application method therefor |
-
2015
- 2015-11-19 CN CN201520926885.8U patent/CN205159906U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322463A (en) * | 2015-11-19 | 2016-02-10 | 国家电网公司 | Insulated outlet extending horizontal ladder for tension string on ultra-high voltage transmission line |
| CN105790161A (en) * | 2016-05-10 | 2016-07-20 | 国网湖南省电力公司带电作业中心 | Omnibearing rotary telescoping insulating ladder and application method therefor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20180524 Granted publication date: 20160413 |
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| PP01 | Preservation of patent right | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210524 Granted publication date: 20160413 |
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| PD01 | Discharge of preservation of patent |