CN106329389B - A kind of lifting device of large-tonnage live wire - Google Patents
A kind of lifting device of large-tonnage live wire Download PDFInfo
- Publication number
- CN106329389B CN106329389B CN201610950678.5A CN201610950678A CN106329389B CN 106329389 B CN106329389 B CN 106329389B CN 201610950678 A CN201610950678 A CN 201610950678A CN 106329389 B CN106329389 B CN 106329389B
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- lifting
- arm
- cross
- support
- horizontalization
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 229910000838 Al alloy Inorganic materials 0.000 claims description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000011810 insulating material Substances 0.000 abstract description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract description 4
- 230000004224 protection Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000012212 insulator Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 241001347978 Major minor Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000020825 overweight Nutrition 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000012954 risk control Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
- Electric Cable Installation (AREA)
Abstract
The present invention relates to a kind of hot line maintenance servicing unit, specifically a kind of lifting device of large-tonnage live wire.Including lifting cross-arm, horizontalization support, reinforcing device and lifting device, horizontalization support is two and is fixed on respectively positioned at the stage casing both sides of lifting cross-arm, the bottom of horizontalization support on the angle steel of steel tower cross-arm, and top is fixedly connected with lifting cross-arm；Reinforcing device is located at the middle part of lifting cross-arm between two horizontalization supports, and the top of reinforcing device is fixedly connected with lifting cross-arm, and bottom is fixedly connected with the angle steel of steel tower cross-arm；Lifting device is symmetricly set in the both ends of lifting cross-arm, and often end is equipped with two lifting devices.The present invention is realized using lifting of the less insulating materials of specification to large-tonnage live wire using 4 lift structures, is had dropproof back-up protection to lifting lead wire, has been ensured the safety and reliability of large-tonnage lifting wire livewire work.
Description
Technical field
The present invention relates to a kind of hot line maintenance servicing unit, specifically a kind of lifting of large-tonnage live wire
Device.
Background technology
In recent years, as the constantly improve of electric network composition, 500kV transmission lines of electricity progressively increase, with carrying for conveying capacity
Height, wire uses more division mode of movements more, and line footpath also synchronously increases, so as to cause the increase of shaft tower vertical load.Meanwhile
The paths of general 500kV transmission lines of electricity is more by mountain area, because the shaft tower between two hilltops is across in larger distance, causes wire shelves
Away from increase, further increase the vertical load of shaft tower.In general, the shaft tower larger to bearing vertical load, to carry
The weight capacity of high insulator chain, double insulator string hang is considered during design.Secondly 500kV transmission lines of electricity are to crossing over weight
Facility is wanted, power circuit, military and important communication such as highway, railway, high ferro, river, 110kV and above
Circuit etc., also all use double insulator string string hang.
When insulator chain is using double string hangs, cross connecting plate connected mode, general insulation are set in side of wire more
Son is changed and carried out under power-off condition, to be carried out charged for replacement double insulator string and be brought following problem：
1st, the shaft tower of double insulator string typically is used in mountain area, vertical load is generally larger, and according to statistics, mountain area is using double strings
Insulate submode, up to 6.5 tons of its vertical load and more than, such as use conventional Work tool livewire work, because Work tool allow lotus
Load is unsatisfactory for lifting and requires and can not realize livewire work.
If the 2, lifting the load of Work tool by increasing, its metal tools will increase lifting tonnage, then certainly will be heavy,
So as to increase the difficulty of operating personnel, it is unfavorable for job safety, increases operating risk.Simultaneously to the hoisting tool that insulate, to realize
So big loading lifting, all brings larger difficulty in design and manufacture.
3rd, because cross-arm head is not more plane, during hot line job, the bending resistance of insulating materials, anti-twisting property are weaker, so
High requirement is proposed to raised position, it is impossible to arbitrarily used like that according to the requirement of power failure operation, while to lift big loading and bear
Carry, insulating materials mechanical strength it is difficult to ensure that.
4th, to livewire work of the lifting weight more than more than 5 tons, in operation process, protected in the insulation standby that anti-wire falls
In shield measure, there is presently no the insulating materials of such performance.
According to analysis above, it is necessary to study a kind of new lifting operational method and Work tool, to lift the wire of large-tonnage,
And lifting and back-up protection integration are realized, solve to change the work of the defect eliminations such as 500kV insulator chains in the case of big loading.Correlation carries
Rising equipment need to reach easy to operate, and Work tool installation is simple, so as to improve the risk control of livewire work and work high above the ground, reduce
The labor intensity of operating personnel, strengthens the security of operation, and this case is given birth to therefrom.
The content of the invention
For these reasons, the present inventor provides a kind of lifting device of large-tonnage live wire.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of lifting device of large-tonnage live wire, including lifting cross-arm, horizontalization support, reinforcing device and lifting dress
Put, horizontalization support is two and respectively positioned at the stage casing both sides of lifting cross-arm, and steel tower cross-arm is fixed in the bottom of horizontalization support
On angle steel, top is fixedly connected with lifting cross-arm；Reinforcing device is located at the middle part of lifting cross-arm between two horizontalization supports,
The top of reinforcing device is fixedly connected with lifting cross-arm, and bottom is fixedly connected with the angle steel of steel tower cross-arm；Lifting device is symmetrically set
The both ends of lifting cross-arm are placed in, often end is equipped with two lifting devices.
The horizontalization support is the U-type groove structure that top is plane, and bolt and iron are used in the bottom both sides of horizontalization support respectively
The angle steel of tower cross-arm is fixed, and the top of horizontalization support is provided with screw, is fixedly connected by bolt with lifting cross-arm.
The lifting cross-arm includes two pieces of high-strength aluminium alloy plates, the centres of two pieces of aluminium alloy plates by some fixed plates and
The aluminium alloy plate of both sides is fixedly connected.
The stage casing and both ends of the lifting cross-arm are equipped with some preformed holes.
The reinforcing device includes upper and lower two pieces of high-strength aluminium alloy plates, is fixed between two pieces of aluminium alloy plates with wearing pin bolt
Connection.
The lifting device includes lifting leading screw, insulating rod component and four line hoist hooks, and insulating rod component is provided with some
Through hole, lifting leading screw are fixedly connected with the top of insulating rod component, and the bottom of insulating rod component is fixedly connected with four line hoist hooks.
Fixed on the lifting cross-arm and fixed support is provided with lifting device, it is horizontal that fixed support is secured by bolts in lifting
In load, support bracket fastened middle part is provided with circular hole, lifting leading screw through the circular hole on fixed support, blending bolt and fixed support and
Lifting cross-arm is fixedly connected.
The present invention compared with prior art, has the following advantages that：
（1）Solve in the case of the big loading of Great span insulator can not powered lifting lead wire problem, its payload is big
Big lifting；
（2）4 points of cooperation liftings are formed by four lifting devices, creative multipoint cooperative scheme greatly improves
The stressing conditions of insulating rod component in operation, it is achieved thereby that the possibility of large-tonnage wire can be lifted；
（3）Lifting device opsition dependent is divided into main lifting device and auxiliary lifting apparatus, and main lifting device plays master in operation
The effect of lifting lead wire stress is wanted, auxiliary lifting apparatus plays secondary load lifting in operation, protected mainly as standby
Shield provides two pipe protections to whole operation process, by major-minor combination, improves the security of powered lifting large-tonnage wire, can
By property；
（4）Lifting device is arranged to the both sides of steel tower cross-arm, takes full advantage of the space of steel tower cross-arm head both sides；
（5）Using present apparatus lifting lead wire, its lifting process is completed in vertical direction, solved well in lifting process
Stationarity, reliability；
（6）4 points of lifting cross-arm load traverse points of the present apparatus are kept apart with steel tower cross-arm stress point, and horizontalization support has
Two stress for improving steel tower tie point, concentrated stress is avoided to change load of the conventional hoist point to steel tower cross-arm；
（7）The present apparatus is simple in construction and easy to operate, reduces the risk of livewire work and work high above the ground, also reduces work
The labor intensity of industry personnel, the security of operation is enhanced, there is preferable application value and promote reference function.
The present apparatus is to eliminate such hidden trouble of equipment in time, ensure power grid security reliable power supply, there is provided reliable solution party
Case, while have larger facilitation to further expanding 500kV hot line maintenances field.
The present invention is further elaborated below by way of the drawings and specific embodiments.
Brief description of the drawings：
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is horizontalization rack mounting structure schematic diagram；
Fig. 3 is the structural representation of reinforcing device；
Fig. 4 is four line hoist hook mounting structure schematic diagrams of lifting device bottom；
Fig. 5 is support bracket fastened overlooking the structure diagram；
Fig. 6 is the cross section structure diagram in fixed support main view direction.
Embodiment：
With reference to shown in Fig. 1 to Fig. 6, a kind of lifting device of large-tonnage live wire, including lifting cross-arm 3, horizontalization support
2nd, reinforcing device 4 and lifting device.Wherein, aluminium alloy plate of the lifting cross-arm 3 including two pieces of thickness for 150mm high intensity, two
The centre of block aluminium alloy plate by some width be 150mm fixed plate 11 with the aluminium alloy plate fixed Combination of bolt and both sides and
Into.Horizontalization support 2 is two and is located at the stage casing both sides of lifting cross-arm 3 respectively, and horizontalization support 2 is the U-type groove that top is plane
Structure, the bottom both sides of horizontalization support 2 are arranged with screw, and the bottom of horizontalization support 2 is fixed on into steel tower cross-arm with bolt
On angle steel 1, ensure that the steel tower cross-arm the-head of injustice is in horizontality, be advantageous to the stress equalization of lifting wire load.
The top of horizontalization support 2 is provided with screw, is fixedly connected on the fixed plate 11 lifted on cross-arm 3 with horizontalization support 2 by bolt
Together.The middle part and side of fixed plate 11 are equipped with screw, and the stage casing of lifting cross-arm 3 is provided with some preformed holes, and the preformed hole is used
In the fixation of horizontalization support 2, multiple preformed holes facilitate the regulation of the fixed position of horizontalization support 2, different on different steel towers to adapt to
The cross-arm of model, bolt are fixedly connected through the preformed hole in lifting cross-arm 3 stage casing with the screw of the side of fixed plate 11.
For reinforcing device 4 located at the middle part of lifting cross-arm 3 and between two horizontalization supports 2, reinforcing device 4 includes two pieces
High-strength aluminium alloy plate, its middle and upper part aluminium alloy plate 41 are positioned over the upper surface of lifting cross-arm 3, bottom aluminium alloy plate 42 and steel tower
The bottom clamping of angle steel 1 of cross-arm, it is fixedly connected with wearing pin bolt 43 between upper and lower two pieces of aluminium alloy plates.Reinforcing device 4 is mainly used
In balance by the lifting both ends stress of cross-arm 3 and the torque that is formed of fulcrum horizontalization support 2, so as to reduce among lifting cross-arm 3
Shear stress.
The both ends of above-mentioned lifting cross-arm 3 are respectively equipped with some preformed holes, and top and bottom are provided with manhole 71 and side is symmetrical
Fixed support 7 provided with screw 72 is secured by bolts at the preformed hole at lifting cross-arm 3 both ends, lifts the pre- of the both ends of cross-arm 3
The installation boxed out for fixed support 7, the settings of multiple preformed holes be easy to according to load load need adjust fixed support 7
Installation site.Fixed support 7 is mainly used in fixing lifting device, and fixed support 7 is symmetrically arranged on the both ends of lifting cross-arm 3, and
Often end sets two, and two need are spaced apart.
Wherein, lifting device sets four altogether, is symmetricly set in the both ends of lifting cross-arm 3, close to the middle part of lifting cross-arm 3
Two lifting devices are main lifting device 5, and two positioned at outside are used as auxiliary lifting apparatus 6.Main lifting device 5 is in operation
Play main lift wire stress, and auxiliary lifting apparatus 6 is dropproof to wire offer two mainly as back-up protection
Protective effect, increase the safety and reliability of large-tonnage live wire lifting by major-minor combination.
Above-mentioned lifting device is mainly made up of lifting leading screw 8, the line hoist hook 10 of insulating rod component 9 and four, and lifting leading screw 8 is worn
The manhole crossed on fixed support 7, blending bolt will lift leading screw 8, lifting cross-arm 3 and fixed support 7 and be fixed on one.
Some through holes are longitudinally provided with insulating rod component 9, lifting leading screw 8 is secured by bolts in the top of insulating rod component 9, insulating bar
The bottom of component 9 is bolted to connection with four line hoist hooks 10.The multiple through holes set on insulating rod component 9, are available for carrying
The regulation of the position of 8 and four line hoist hook of leading screw 10 is risen, so as to realize the regulation of integral lifting apparatus length.When lifting operation, lead
Line is hung on four line hoist hooks 10, and wire is lifted and put down by tightening up and loosening lifting leading screw 8.
Lifting device is arranged at the outer space of steel tower cross-arm by the present invention, four hoist points is formed to wire, to lifting
Power is decomposed and balanced so that force makes the powered lifting of large-tonnage wire be possibly realized to four hoist points jointly.The present apparatus
It is simple in construction, convenient disassembly, the loading more than 6 tons can be born, the whole string for facilitating straight line pole insulator is changed.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, those of ordinary skill in the art are to this hair
Other modifications or equivalent substitution that bright technical scheme is made, without departing from the spirit and scope of technical solution of the present invention,
It all should cover in scope of the presently claimed invention.
Claims (6)
- A kind of 1. lifting device of large-tonnage live wire, it is characterised in that：Including lifting cross-arm, horizontalization support, reinforcing device And lifting device, horizontalization support are two and respectively positioned at the stage casing both sides of lifting cross-arm, iron is fixed in the bottom of horizontalization support On the angle steel of tower cross-arm, top is fixedly connected with lifting cross-arm；Reinforcing device is located at the middle part of lifting cross-arm between two horizontalizations Between support, the top of reinforcing device is fixedly connected with lifting cross-arm, and bottom is fixedly connected with the angle steel of steel tower cross-arm；Lifting dress The both ends for being symmetricly set in lifting cross-arm are put, often end is equipped with two lifting devices；The reinforcing device includes upper and lower two pieces of height Strength aluminum alloy sheets, it is fixedly connected with wearing pin bolt between two pieces of aluminium alloy plates.
- A kind of 2. lifting device of large-tonnage live wire according to claim 1, it is characterised in that：The horizontalization support It is the U-type groove structure of plane for top, the bottom both sides of horizontalization support are fixed with the angle steel of bolt and steel tower cross-arm respectively, horizontalization The top of support is provided with screw, is fixedly connected by bolt with lifting cross-arm.
- A kind of 3. lifting device of large-tonnage live wire according to claim 1, it is characterised in that：The lifting cross-arm Including two pieces of high-strength aluminium alloy plates, the centre of two pieces of aluminium alloy plates is fixed by the aluminium alloy plate of some fixed plates and both sides to be connected Connect.
- A kind of 4. lifting device of large-tonnage live wire according to claim 1, it is characterised in that：The lifting cross-arm Stage casing and both ends be equipped with some preformed holes.
- A kind of 5. lifting device of large-tonnage live wire according to claim 1, it is characterised in that：The lifting device Including lifting leading screw, insulating rod component and four line hoist hooks, insulating rod component is provided with some through holes, lifts leading screw and insulating bar The top of component is fixedly connected, and the bottom of insulating rod component is fixedly connected with four line hoist hooks.
- A kind of 6. lifting device of large-tonnage live wire according to claim 5, it is characterised in that：The lifting cross-arm Fixed support is provided with upper fixed lifting device, fixed support is secured by bolts on lifting cross-arm, support bracket fastened middle part Provided with circular hole, lifting leading screw is fixedly connected through the circular hole on fixed support, blending bolt with fixed support and lifting cross-arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950678.5A CN106329389B (en) | 2016-10-27 | 2016-10-27 | A kind of lifting device of large-tonnage live wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610950678.5A CN106329389B (en) | 2016-10-27 | 2016-10-27 | A kind of lifting device of large-tonnage live wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106329389A CN106329389A (en) | 2017-01-11 |
| CN106329389B true CN106329389B (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610950678.5A Active CN106329389B (en) | 2016-10-27 | 2016-10-27 | A kind of lifting device of large-tonnage live wire |
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| Country | Link |
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| CN (1) | CN106329389B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286153B (en) * | 2018-11-06 | 2024-02-06 | 国网山东省电力公司枣庄供电公司 | Medium-phase conductor lifting tool and medium-phase conductor lifting method for upgrading and reforming pole tower |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023624A (en) * | 1996-07-03 | 1998-01-23 | Asahi Tec Corp | Tool for having insulator string in a lump |
| KR100846744B1 (en) * | 2007-04-11 | 2008-07-16 | (주)대홍전력 | Transfer apparatus of robot for inspecting distribution power line |
| CN201639243U (en) * | 2010-01-26 | 2010-11-17 | 湖北省电力公司超高压输变电公司 | Special clip for double-L and double-V cross arms of extra-high voltage power transmission lines |
| CN202190019U (en) * | 2011-07-05 | 2012-04-11 | 河南省电力公司洛阳供电公司 | Aerial earth wire ratchet wrench type two-point lifting tool |
| CN203367861U (en) * | 2013-05-30 | 2013-12-25 | 河南省电力公司信阳供电公司 | Simple ground-wire lifter |
| CN104821517A (en) * | 2015-06-03 | 2015-08-05 | 国网冀北电力有限公司唐山供电公司 | Double-pull-rod wing-shaped lead lifting device |
| CN205565515U (en) * | 2016-03-21 | 2016-09-07 | 中国南方电网有限责任公司超高压输电公司百色局 | Overhead OPGW composite optical cable ground wire lifter |
| CN206148848U (en) * | 2016-10-27 | 2017-05-03 | 国网浙江省电力公司绍兴供电公司 | Large -tonnage electrified conducting wire's hoisting device |
-
2016
- 2016-10-27 CN CN201610950678.5A patent/CN106329389B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1023624A (en) * | 1996-07-03 | 1998-01-23 | Asahi Tec Corp | Tool for having insulator string in a lump |
| KR100846744B1 (en) * | 2007-04-11 | 2008-07-16 | (주)대홍전력 | Transfer apparatus of robot for inspecting distribution power line |
| CN201639243U (en) * | 2010-01-26 | 2010-11-17 | 湖北省电力公司超高压输变电公司 | Special clip for double-L and double-V cross arms of extra-high voltage power transmission lines |
| CN202190019U (en) * | 2011-07-05 | 2012-04-11 | 河南省电力公司洛阳供电公司 | Aerial earth wire ratchet wrench type two-point lifting tool |
| CN203367861U (en) * | 2013-05-30 | 2013-12-25 | 河南省电力公司信阳供电公司 | Simple ground-wire lifter |
| CN104821517A (en) * | 2015-06-03 | 2015-08-05 | 国网冀北电力有限公司唐山供电公司 | Double-pull-rod wing-shaped lead lifting device |
| CN205565515U (en) * | 2016-03-21 | 2016-09-07 | 中国南方电网有限责任公司超高压输电公司百色局 | Overhead OPGW composite optical cable ground wire lifter |
| CN206148848U (en) * | 2016-10-27 | 2017-05-03 | 国网浙江省电力公司绍兴供电公司 | Large -tonnage electrified conducting wire's hoisting device |
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| Publication number | Publication date |
|---|---|
| CN106329389A (en) | 2017-01-11 |
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