CN110061470A - Exempt to lift new construction method based on tunnel cable - Google Patents
Exempt to lift new construction method based on tunnel cable Download PDFInfo
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- CN110061470A CN110061470A CN201910325614.XA CN201910325614A CN110061470A CN 110061470 A CN110061470 A CN 110061470A CN 201910325614 A CN201910325614 A CN 201910325614A CN 110061470 A CN110061470 A CN 110061470A
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- 238000010276 construction Methods 0.000 title claims abstract description 27
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 17
- 238000011017 operating method Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 4
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- 238000002360 preparation method Methods 0.000 claims description 3
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- 235000006484 Paeonia officinalis Nutrition 0.000 claims description 2
- 235000009566 rice Nutrition 0.000 claims description 2
- 230000003111 delayed effect Effects 0.000 claims 1
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Classifications
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- 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
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
- H02G1/088—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling using pulling devices movable inside conduits
-
- 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
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/08—Installations of electric cables or lines in or on the ground or water in tunnels
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- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Exempt to lift new construction method based on tunnel cable the invention discloses one kind, it is laid suitable for high voltage power transmission power tunnel cable, include the following steps: 1) cable tunnel well external equipment arrangement: determining the fixation position of cable reel stent, fixed V-type cable drum, the hanging angle pulley of installation；2) cable is into well: for cable uncoiling on V-type cable drum, passing through hanging angle pulley will be in cable uncoiling to tunnel shaft；3) equipment is arranged in cable tunnel: the aerial quarter block of installation cable, electric traction, which are twisted, unfolds Special-purpose bench coaster with tunnel cable straight line；4) hauling rope is arranged: hauling rope is wrapped in electric traction and is twisted, and pass through tunnel cable straight line unfolding Special-purpose bench coaster and the aerial quarter block of cable, other end connecting cable；5) cable pulling；6) cable position is checked；7) equipment Removal；8) cable laying quality is checked；Construction efficiency of the present invention is high, at low cost, while can reduce the cable fault in work progress.
Description
Technical field
The present invention relates to a kind of power cable layer construction methods of installation, and in particular to one kind is exempted from lift based on tunnel cable and applied
Work new method belongs to tunnel inner cable installation Technology field.
Background technique
Cable tunnel is the tunnel for being used to be laid with cable, for that can accommodate walking for the cable being largely laid on cable bearer
Corridor or tunnel type structures.In power demand today's society growing day by day, especially in city, relative to other laying sides
The advantage of formula, cable tunnel is apparent: 1. cable tunnel is disposable investment construction, is equipped with many cable branch in tunnel
Frame, after tunnel is built up, it is only necessary to check on time, without proposing new plan to relevant departments, facilitate maintenance, maintenance or more
Change cable；2. cable tunnel can be reliably prevented external force destruction, the influence of external condition is reduced, construction is facilitated；3. can accommodate big
Cable is measured, and is not influenced vulnerable to external force, cable life is in a disguised form improved.In short, the application of cable tunnel can not for urban development
Or lack, the construction technology laid in cable tunnel should also grow with each passing hour.
Technical difficult points are laid in cable tunnel at present to be: 1) cable that laying is completed being promoted to cable bearer,
This process still relies primarily on manually at present, and since cable self weight is larger, lifting process need to consume a large amount of manpowers, low efficiency
Under；Secondly, space is limited in cable tunnel, cable bearer is metallic facility again, easily causes personnel and cable in work progress
Damage.
2) in practice of construction when meeting with tunnel turning, traditional construction technique solution is special in turning setting
Personnel pass through bend by dragger tractive force bending cable using crowbar support cable.There are many for conventional construction method
Drawback: increasing unnecessary human cost, and speed of application is slow, be easy to cause the damage of personnel and cable.
3) traditional work uses diesel oil motor-driven grinding mill, since space is limited in cable tunnel, unsmooth, conventional diesel engine of divulging information
Dynamic the disadvantages of to be twisted that there are noises big, harmful gas emission is big, volume is large-scale handicapped.
Summary of the invention
The technical problems to be solved by the present invention are: overcoming the deficiencies in the prior art, provide a kind of based on tunnel
Cable exempts to lift new construction method, so that construction light and fast of the cable at tunnel turning, and it is not necessarily to manpower, improve construction effect
Rate reduces construction cost, while reducing the cable fault in work progress.
The present invention is adopted the technical scheme that in order to solve the technical problem: one kind exempting from the new side of lift construction based on tunnel cable
Method includes the following steps:
Preparation includes:
1) the outer ground of tunnel shaft is cleared up, is smooth；
2) fence is arranged at tunnel well head；
3) it is disposed available manpower according to work on the spot process and tool equipment.
Operating procedure:
1) well external equipment in cable tunnel is arranged: fixation position of the cable reel stent outside well on ground is determined, in cable reel stent
Unpowered V-type cable drum bracket, and fixed V-type cable drum are set up between tunnel well head, hanging turn of installation at tunnel well head
To pulley.
2) cable is into well: cable reel is placed on the cable reel stent, by cable uncoiling on the V-type cable drum,
And it will be in cable uncoiling to tunnel shaft across the hanging angle pulley.
3) equipment is arranged in cable tunnel: tunnel entrance installs the aerial quarter block of cable, installs electronic lead in tunnel
Draw and be twisted, every five meter ampere fills the tunnel cable straight line unfolding Special-purpose bench coaster on tunnel wall mounting, and passes through cunning
The long handle bolt of vehicle bottom is fixed as one with tunnel cable bracket；Tunnel turning, by the big of angle of turn and cable size
The aerial quarter block of cable, and the adjustable pine of traction device of the aerial quarter block upper end of the cable are installed in small selection
Tightly.
4) hauling rope is arranged: the one ends wound of hauling rope being rolled in the mill that the electric traction is twisted, passes through the tunnel
Road cable straight line unfolds Special-purpose bench coaster and the aerial quarter block of the cable, other end connecting cable；The hauling rope exhibition
It puts when being twisted upper to the cable electric traction, the hauling rope rolls on winding not less than 3 in the mill that the electric traction is twisted
Circle, has stayed hauling rope tail rope by special messenger.
5) cable pulling: on inspection equipment install and connect it is errorless after, traction instruction is assigned by operating personnel, described in starting
Electric traction is twisted trailing cable, and end sends special messenger's follow-observation cable by coaster situation during cable pulling, when logical
When crossing at turning of cable, reducing hauling speed ensures that cable passes through the aerial quarter block of the cable, until cable is whole
Traction stops afterwards in place.
6) it checks cable position: checking whether the cable position on cable position and corner cable trough on cable trough arrives
Position, when cable is not to the correct position on cable trough, adjustment cable until cable in place.
7) equipment Removal: cable pulling in place after, remove the hauling rope, remove the electric traction and be twisted, remove institute
State tunnel cable straight line unfolding Special-purpose bench coaster and the aerial quarter block of the cable.
The method for dismounting of the tunnel cable straight line unfolding Special-purpose bench coaster are as follows: special in tunnel cable straight line unfolding
With electronic top cable device is used below half meter or so before and after rack coaster of cable, cable is held up slightly, unclamps pulley and tunnel
Long handle bolt between road cable bearer, takes out cable coaster from bracket, and electronic top cable device is dropped down on tunnel cable bracket
?.
The method for dismounting of the aerial quarter block of cable are as follows: loosen the aerial quarter block take-up of the cable, electricity
Cable stress is eased, and is twisted cooperation with the electric traction, and cable is placed the tunnel cable bracket at turning by artificial control
On suitable position.
After equipment is all removed, cable snake shaped laying is carried out according to design requirement, job step is fixedly mounted.
8) it checks cable laying quality: checking the quality after the completion of cable laying, terminate operation after passed examination.
The beneficial effects of the present invention are: the present invention is lifted this working procedure without cable, cable can be directly on bracket
Laying reduces difficulty of construction, reduces personnel needed for constructing, equipment volume is light, simple and quick；It also can avoid applying simultaneously
It is contacted between cable and bracket during work, reduces the probability of cable fault.
Detailed description of the invention
Fig. 1 is standard operating procedure figure of the invention；
Fig. 2 is the structural schematic diagram of the aerial quarter block device of cable in Fig. 1；
Fig. 3 is the structural schematic diagram that tunnel cable straight line unfolds Special-purpose bench coaster in Fig. 1；
Fig. 4 is the structural schematic diagram of electronic pre-viewing device in Fig. 1.
Specific embodiment
The present invention will be further explained in the following with reference to the drawings and specific embodiments:
Embodiment: referring to Fig. 1, one kind is exempted to lift new construction method based on tunnel cable, includes the following steps:
Preparation includes:
1) the outer ground of tunnel shaft is cleared up, is smooth；
2) safety measures such as fence are arranged at tunnel well head；
3) it is disposed available manpower according to work on the spot process and tool equipment, tool equipment includes V-type cable drum, hanging steering cunning
Wheel, the aerial quarter block of cable, tunnel cable straight line unfolding Special-purpose bench coaster, hauling rope and electric traction are twisted.
Referring to fig. 2, in figure, 1- pulley, 2- long axis, 3- pulley bracket, 31- vertical rack, 32- horizontal bracket, 4- bearing,
5- column idler wheel, 6- framework, 7- opening wear pin, 8- towing pad.
The aerial quarter block of cable includes pulley 1, and pulley 1 is mounted on pulley bracket 3 by long axis 2, pulley bracket 3 by
Two parallel 31 bottom of vertical rack connection horizontal brackets 32 form, and long axis 2, which runs through, to be connected under two vertical racks 31
Portion, the both ends of pulley 1 are rotatably connected on the long axis 2 between two vertical racks 31 by bearing 4, two vertical racks 31
Top is rotatably connected to column idler wheel 5 vertically, and the upper end of two vertical racks 31 is also connected with framework 6 and passes through opening
The connection of pin 7 is worn, towing pad 8 is arranged in the upper end of framework 6.
Referring to Fig. 3, in figure: 9- side wheel, 10- vertical wheel axis, the horizontal wheel of 11-, 12- horizontal axis, 13-U type pedestal.
Tunnel cable straight line unfolds Special-purpose bench coaster, is made of the connection of three auxiliary pulley groups, and three auxiliary pulley groups include two secondary
Side pulley blocks and a secondary bottom pulley group, two secondary side pulley blocks are vertically arranged and lower end passes through bottom pulley group connection composition
U-shaped structure, side pulley blocks are made of side wheel 9 and vertical wheel axis 10, and the upper end of vertical wheel axis 10 is through connection side wheel 9, bottom pulley
Group is made of horizontal wheel 11, horizontal axis 12 and U-shaped bottom seat 13, and horizontal axis 12 is through the horizontal upper end taken turns 11 and be connected to U-shaped bottom seat 13, vertical wheel
Axis 10 is bolted to connection in the side of U-shaped bottom seat 13.
Referring to fig. 4, in figure: 14- motor, 15- mandril, 16- connector, 17- threaded rod, the first pin shaft of 18-, 19- pedestal,
20- adjusting nut, the second pin shaft of 21-, 22-U type bracket, 23- connecting rod, 24- control panel, 25- storage groove, 26-U type groove.
Electronic top cable device, including motor 14 and mandril 15, mandril 15 are connect with motor 14, and the bottom end of mandril 15 passes through company
Connector 16 is connect with threaded rod 17, and the first pin shaft 18 is provided on connector 16, and threaded rod 17 is arranged on pedestal 19, mandril 15
Upper end connect with U-shaped anchor ear by the second pin shaft 21, be provided with control panel 24 on 15 outer surface of mandril above motor 14,
24 side of control panel is provided with storage groove.U-shaped anchor ear includes u-bracket 22 and connecting rod 23, the upper end of connecting rod 23 with
The u-bracket 22 of cable used in anchor ear connects, and the lower end of connecting rod 23 utilizes the second pin shaft 21 and top by round hole thereon
Bar 15 connects.
Operating procedure:
1) well external equipment in cable tunnel is arranged: determining fixed bit of the cable reel stent outside well on ground according to on-site actual situations
It sets, unpowered V-type cable drum bracket, and fixed V-type cable drum, tunnel shaft is set up between cable reel stent and tunnel well head
The hanging angle pulley of installation at mouthful.
2) cable is into well: cable reel is placed on cable reel stent, by cable uncoiling on V-type cable drum, and is passed through outstanding
Empty angle pulley will be in cable uncoiling to tunnel shaft.
3) equipment is arranged in cable tunnel: tunnel entrance installs the aerial quarter block of cable, and cable clearance cable is aerial
Quarter block by switching to level vertically, installs electric traction into cable tunnel, in tunnel and is twisted, and every five meters of tunnel wall mounting
One tunnel cable straight line unfolding Special-purpose bench coaster is installed, and solid by the long handle bolt of arse and tunnel cable bracket
It is set to one；Tunnel turning selects the installation aerial quarter block of cable, and cable by the size of angle of turn and cable size
The traction device of aerial quarter block upper end can adjust elastic.
When construction, quarter block device is installed in design height, device is by towing pad 8 via steel wire and opposite tunnel electricity
The connection of cable bracket, steel wire length are determined that the opening for opening quarter block device side wears pin 7, by cable by on-site actual situations
Traction rope is passed through from 1 top of pulley, and locked opening wears pin 7.Cable laying can be carried out traditionally, cable row to bend, from
Quarter block device passes through, and pulley 1 drives cable to form the tractive force of reverse tunnel inner wall, makes cable far from tunnel wall, electricity
Cable forms angle of turn, passes through tunnel of turning.
Tunnel cable straight line unfolds the U-shaped bottom seat 5 of Special-purpose bench coaster and cable bearer top surface is horizontally arranged, long with pedestal
Handle bolt is fixed, and cable drawing machine hawser is passed through by present apparatus drum overhead in advance, and cable head is promoted to laying by pulley
Highly, pass through above present apparatus pulley blocks, sequentially lay.
4) hauling rope is arranged: the one ends wound of hauling rope being rolled in the mill that electric traction is twisted, the cable that passes through tunnel is straight
Line unfolds Special-purpose bench coaster and the aerial quarter block of cable, other end connecting cable；Hauling rope is unfolded to cable electric traction
When being twisted, hauling rope rolls on winding not less than 3 circles in the mill that electric traction is twisted, and has stayed hauling rope tail rope by special messenger.
5) cable pulling: on inspection equipment install and connect it is errorless after, by operating personnel assign traction instruction, start it is electronic
Traction is twisted trailing cable, and end send special messenger's follow-observation cable to pass through coaster situation during cable pulling, when passing through electricity
When cable turning, reducing hauling speed ensures that cable passes through the aerial quarter block of cable, until cable is all drawn in place
After stop.
6) it checks cable position: checking whether the cable position on cable position and corner cable trough on cable trough arrives
Position, when cable is not to the correct position on cable trough, adjustment cable until cable in place；
7) equipment Removal: cable pulling in place after, remove hauling rope, remove electric traction and be twisted, remove tunnel cable straight line exhibition
Put Special-purpose bench coaster and the aerial quarter block of cable.
The method for dismounting of the aerial quarter block of cable are as follows: after the completion of laying, open a side opening and wear pin 7, unclamp connection steel
Silk, removes quarter block device, and cable stress is eased, and is twisted cooperation with electric traction, and cable is placed in artificial control to be turned
Suitable position on the tunnel cable bracket of crook.
The method for dismounting of tunnel cable straight line unfolding Special-purpose bench coaster are as follows: sliding in tunnel cable straight line unfolding Special-purpose bench
Electronic top cable device is used below the cable of the later half rice of Chinese herbaceous peony or so, cable is held up slightly, unclamps pulley and tunnel cable branch
Long handle bolt between frame, takes out cable coaster from bracket, and electronic top cable device is dropped down on tunnel cable bracket；
Electronic top cable device work when, using coaxial three-fold block by tunnel cable draw in place (height of cable at this time with
The cable bearer of cable will be placed in tunnel with height) after, first in suitable position arranged orthogonal, and utilize 17 He of threaded rod
Gimbal base 19 come adjust height, then by the present apparatus u-bracket 22 be aligned construction cable, using handheld terminal or open
Close button starting hydraulic electric motor 14 cable is promoted, cable reach need height (cable lower surface has been higher by coaster highest
Point) after, stop cable and rise operation, a groove profile slide plate is placed between the cable bearer on wall both sides, removes cable laying coaster
Device on whereabouts cable to groove profile slide plate, and the electronic mandril 15 to have relaxed one's efforts is adjusted to the angle of needs, cable is pushed into
Suitable position on tunnel cable bracket.
After equipment is all removed, cable snake shaped laying is carried out according to design requirement, job step is fixedly mounted.
8) it checks cable laying quality: checking the quality after the completion of cable laying, terminate operation after passed examination.
The present invention is lifted this working procedure without cable, and cable can directly be laid on bracket, reduces difficulty of construction,
Personnel needed for constructing are reduced, equipment volume is light, simple and quick；It is also can avoid in work progress simultaneously between cable and bracket
Contact, reduces the probability of cable fault.
The above described is only a preferred embodiment of the present invention, be not intended to limit the present invention in any form, it is all
It is any simple modification, equivalent change and modification to the above embodiments according to the technical essence of the invention, still falls within
In the range of technical solution of the present invention.
Claims (6)
1. one kind is exempted to lift new construction method based on tunnel cable, characterized by the following steps:
Preparation includes:
1) the outer ground of tunnel shaft is cleared up, is smooth；
2) fence is arranged at tunnel well head；
3) it is disposed available manpower according to work on the spot process and tool equipment；
Operating procedure:
1) well external equipment in cable tunnel is arranged: fixation position of the cable reel stent outside well on ground is determined, in cable reel stent
Unpowered V-type cable drum bracket, and fixed V-type cable drum are set up between tunnel well head, hanging turn of installation at tunnel well head
To pulley；
2) cable is into well: cable reel is placed on the cable reel stent, by cable uncoiling on the V-type cable drum, and is worn
Crossing the hanging angle pulley will be in cable uncoiling to tunnel shaft；
3) equipment is arranged in cable tunnel: tunnel entrance installs the aerial quarter block of cable, and installation electric traction twists in tunnel
It grinds, installation tunnel cable straight line unfolds Special-purpose bench coaster on tunnel wall mounting, and multiple cables are installed at tunnel turning
Aerial quarter block；
4) hauling rope is arranged: the one ends wound of hauling rope being rolled in the mill that the electric traction is twisted, passes through the tunnel electricity
Cable straight line unfolds Special-purpose bench coaster and the aerial quarter block of the cable, other end connecting cable；
5) cable pulling: on inspection equipment install and connect it is errorless after, by operating personnel assign traction instruction, start it is described electronic
Traction is twisted trailing cable, and cable stops traction afterwards in place；
6) check cable position: in place whether the cable position on cable position and corner cable trough on inspection cable trough, electric
When cable is not to the correct position on cable trough, adjustment cable until cable in place；
7) equipment Removal: cable pulling in place after, remove the hauling rope, remove the electric traction and be twisted, remove the tunnel
Road cable straight line unfolds Special-purpose bench coaster and the aerial quarter block of the cable；
8) it checks cable laying quality: checking the quality after the completion of cable laying, terminate operation after passed examination.
2. according to claim 1 exempt to lift new construction method based on tunnel cable, it is characterised in that: operating procedure 3) in,
In tunnel linear road, every five meter ampere fills the tunnel cable straight line unfolding Special-purpose bench coaster, and passes through arse
Long handle bolt is fixed as one with tunnel cable bracket；Tunnel turning is selected to pacify by the size of angle of turn and cable size
Fill the aerial quarter block of the cable, and the traction device of the aerial quarter block upper end of the cable can adjust it is elastic.
3. according to claim 1 exempt to lift new construction method based on tunnel cable, it is characterised in that: operating procedure 4) in,
The hauling rope unfolds when being twisted upper to the cable electric traction, and the hauling rope is rolled in the mill that the electric traction is twisted
Winding has stayed hauling rope tail rope by special messenger not less than 3 circles.
4. according to claim 1 exempt to lift new construction method based on tunnel cable, it is characterised in that: operating procedure 5) in,
End sends special messenger's follow-observation cable by coaster situation during cable pulling, and when by turning of cable, reduction is led
Drawing speed ensures that cable passes through the aerial quarter block of the cable, until cable is all drawn in place.
5. according to claim 1 exempt to lift new construction method based on tunnel cable, it is characterised in that: operating procedure 7) in,
The method for dismounting of the tunnel cable straight line unfolding Special-purpose bench coaster are as follows: sliding in tunnel cable straight line unfolding Special-purpose bench
Electronic top cable device is used below the cable of the later half rice of Chinese herbaceous peony or so, cable is held up slightly, unclamps pulley and tunnel cable branch
Long handle bolt between frame, takes out cable coaster from bracket, and electronic top cable device is dropped down on tunnel cable bracket；It is described
The method for dismounting of the aerial quarter block of cable are as follows: loosen the aerial quarter block take-up of the cable, cable stress is delayed
Solution, is twisted cooperation with the electric traction, and cable is placed the suitable position on the tunnel cable bracket at turning by artificial control
?.
6. according to claim 1 exempt to lift new construction method based on tunnel cable, it is characterised in that: operating procedure 8) in,
After equipment is all removed, cable snake shaped laying is carried out according to design requirement, job step is fixedly mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910325614.XA CN110061470B (en) | 2019-04-22 | 2019-04-22 | Novel lifting-free construction method based on tunnel cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910325614.XA CN110061470B (en) | 2019-04-22 | 2019-04-22 | Novel lifting-free construction method based on tunnel cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110061470A true CN110061470A (en) | 2019-07-26 |
| CN110061470B CN110061470B (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910325614.XA Active CN110061470B (en) | 2019-04-22 | 2019-04-22 | Novel lifting-free construction method based on tunnel cable |
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| Country | Link |
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| CN (1) | CN110061470B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110620354A (en) * | 2019-11-01 | 2019-12-27 | 夏文杰 | Multifunctional winching machine |
| CN112310890A (en) * | 2020-10-21 | 2021-02-02 | 中色十二冶金建设有限公司 | Comprehensive pipe rack cable traction and displacement laying system and application method |
| CN112952661A (en) * | 2021-04-08 | 2021-06-11 | 北京市第三建筑工程有限公司 | Installation structure and construction method for laying cable in narrow space |
| CN115000880A (en) * | 2022-05-30 | 2022-09-02 | 广东顺德电力设计院有限公司 | Laying method and laying structure of large-length high-voltage cable |
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| CN112310890A (en) * | 2020-10-21 | 2021-02-02 | 中色十二冶金建设有限公司 | Comprehensive pipe rack cable traction and displacement laying system and application method |
| CN112952661A (en) * | 2021-04-08 | 2021-06-11 | 北京市第三建筑工程有限公司 | Installation structure and construction method for laying cable in narrow space |
| CN112952661B (en) * | 2021-04-08 | 2021-12-21 | 北京市第三建筑工程有限公司 | Installation structure and construction method for laying cable in narrow space |
| CN115000880A (en) * | 2022-05-30 | 2022-09-02 | 广东顺德电力设计院有限公司 | Laying method and laying structure of large-length high-voltage cable |
| CN115000880B (en) * | 2022-05-30 | 2024-04-05 | 广东顺德电力设计院有限公司 | Laying method and laying structure of long-length high-voltage cable |
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| CN110061470B (en) | 2020-08-28 |
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Effective date of registration: 20231026 Address after: 450000 Huaihe West Road, Zhongyuan District, Zhengzhou, Henan Province, 19 Patentee after: STATE GRID HENAN ELECTRIC POWER COMPANY ZHENGZHOU POWER SUPPLY Co. Patentee after: ZHENGZHOU XIANGHE GROUP Co.,Ltd. Patentee after: ZHENGZHOU ELECTRIC POWER DESIGN INSTITUTE OF CHINA ELECTRIC POWER EQUIPMENT AND TECHNOLOGY CO.,LTD. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 450000 Huaihe West Road, Zhongyuan District, Zhengzhou, Henan Province, 19 Patentee before: STATE GRID HENAN ELECTRIC POWER COMPANY ZHENGZHOU POWER SUPPLY Co. Patentee before: Zhengzhou Xianghe Group Co.,Ltd. Electric Power Installation Branch Patentee before: ZHENGZHOU ELECTRIC POWER DESIGN INSTITUTE OF CHINA ELECTRIC POWER EQUIPMENT AND TECHNOLOGY CO.,LTD. Patentee before: STATE GRID CORPORATION OF CHINA |