CN115385276A - Novel lifting platform for outer wall of tower barrel of wind driven generator set - Google Patents
Novel lifting platform for outer wall of tower barrel of wind driven generator set Download PDFInfo
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- CN115385276A CN115385276A CN202210943797.3A CN202210943797A CN115385276A CN 115385276 A CN115385276 A CN 115385276A CN 202210943797 A CN202210943797 A CN 202210943797A CN 115385276 A CN115385276 A CN 115385276A
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- bedplate
- tower
- wall
- platen
- lifting rope
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- 238000004804 winding Methods 0.000 claims abstract description 7
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 9
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 9
- 241001330002 Bambuseae Species 0.000 claims description 9
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 9
- 239000011425 bamboo Substances 0.000 claims description 9
- 238000010248 power generation Methods 0.000 claims 4
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000009194 climbing Effects 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000011835 investigation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000011172 small scale experimental method Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G3/30—Mobile scaffolds; Scaffolds with mobile platforms suspended by flexible supporting elements, e.g. cables
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- 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
-
- 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
- B66F13/00—Common constructional features or accessories
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
- E04G3/246—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons following the inside contour of a building
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
- F03D80/50—Maintenance or repair
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G2003/286—Mobile scaffolds; Scaffolds with mobile platforms mobile vertically
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The invention discloses a novel lifting platform for the outer wall of a tower barrel of a wind driven generator set, which is characterized by comprising a first bedplate, a second bedplate and a main winch, wherein the first bedplate is arranged outside the tower barrel, the second bedplate is arranged below the first bedplate in parallel, the main winch is fixedly arranged on the first bedplate or the second bedplate, the first bedplate and the second bedplate are both horizontally arranged, the first bedplate and the second bedplate are fixedly connected, a lifting rope is wound on the main winch, the lower end of the lifting rope is wound on a winding drum of the main winch, and the upper end of the lifting rope is fixedly connected to the top of the tower barrel. The main winch drives the first bedplate and the second bedplate to move up and down, so that an operator standing on the first bedplate is driven to move up and down along the tower, the working efficiency of the outer wall of the tower during maintenance is improved, and the working intensity and physical consumption of the operator are reduced.
Description
Technical Field
The invention relates to the technical field of maintenance of a tower of a wind generating set, in particular to a novel lifting platform for the outer wall of the tower of the wind generating set.
Background
The outer wall of the tower barrel of the fan generator set relates to aloft work, the operation often adopts a mode of 'spider man', namely, an operator hangs in the high altitude through an operation rope for maintenance work, the danger coefficient of the mode is higher, the wind in the high altitude is very large, the operation position of the operator is very unstable, a plurality of persons are required to pull cables and the operation rope for matching, so that the amplitude of the swing along with the wind is reduced, the operation efficiency is low, the operation quality is not easy to guarantee, the physical consumption of the operator is high, and the falling and collision accidents are easy to happen.
Patent application with publication number CN114475833A discloses an automatic climbing robot for a tower of a wind driven generator, which comprises: the device comprises a control system, a detection device, a fixing main part, a hydraulic system, a clamping and fixing unit and a crawler driving assembly, wherein the size of the fixing device assembly is adjusted by adjusting the opening and closing degree of a tightening device of the hydraulic system, so that the device is suitable for different tower cylinder diameters. The structure is complex, the cost is high, and people can not work.
Patent application with publication number CN201990448U discloses an automatic climbing machine for a tower of a wind driven generator, which has a working surface and comprises a support, wherein the support is provided with an upper electromagnet grasping mechanism and a lower electromagnet grasping mechanism, and climbing is performed by utilizing the alternate action of the upper electromagnet grasping mechanism and the lower electromagnet grasping mechanism, so that climbing efficiency is low.
Disclosure of Invention
The invention aims to provide a novel lifting platform for the outer wall of a tower cylinder of a wind driven generator set, which is used for solving the problem of low working efficiency in maintenance of the outer wall of the tower cylinder of the wind driven generator set.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the utility model provides a novel aerogenerator group tower section of thick bamboo outer wall lift platform, its characterized in that, including setting up first platen outside the tower section of thick bamboo, parallel arrangement at the second platen of first platen below and the fixed main hoist engine that sets up on first platen or second platen, first platen and second platen are the level setting, first platen and second platen fixed connection, the winding has the lifting rope on the main hoist engine, the lower extreme of lifting rope is around on the reel of main hoist engine, the upper end fixed connection of lifting rope is at the top of a tower section of thick bamboo.
Furthermore, a belt is arranged on the outer wall of the tower drum, an auxiliary winch is fixedly arranged at a position close to the edge of the first bedplate or the second bedplate, one end of the belt is fixedly connected with the first bedplate, the other end of the belt is wound on a reel of the auxiliary winch, and after the auxiliary winch tightens the belt, the belt is held outside the tower drum.
Furthermore, a wheel carrier is fixedly arranged on the first bedplate or the second bedplate, and the wheel carrier is rotatably connected with a roller which vertically rolls along the outer wall of the tower barrel.
Furthermore, the lifting rope is close to the outer wall of the tower barrel, the winch is arranged between the first bedplate and the second bedplate, a through hole is formed in the position, corresponding to the lifting rope, of the first bedplate, a guide pipe is fixedly arranged on the first bedplate at the position of the through hole and is coaxial with the through hole, the guide pipe is sleeved outside the lifting rope, and the through hole and the guide pipe are in clearance fit with the lifting rope.
Furthermore, a third bedplate is arranged below the second bedplate in parallel, the third bedplate is fixedly connected with the second bedplate, the two belts are arranged up and down, the two auxiliary winches are arranged up and down, reels of the two auxiliary winches are respectively arranged between the first bedplate and the second bedplate and between the second bedplate and the third bedplate, one ends of the two belts are respectively wound on the corresponding reels, and the other ends of the two belts are respectively fixedly connected with the first bedplate and the second bedplate.
Furthermore, the lifting ropes are two, one lifting rope is close to the outer wall of the tower barrel, the other lifting rope is far away from the outer wall of the tower barrel, the number of the main winches is two, and the lower ends of the two lifting ropes are wound on the winding drums of the corresponding main winches respectively.
Furthermore, support columns are arranged between the first bedplate and the second bedplate and between the second bedplate and the third bedplate, the first bedplate, the second bedplate and the third bedplate are respectively and fixedly connected with the corresponding support columns, and one ends of the belts, far away from the auxiliary winch, are respectively and fixedly connected with the corresponding support columns.
The invention has the positive effects that:
1. the lifting rope type tower crane is provided with the main winch, the lifting rope, the first bedplate and the second bedplate, and the main winch drives the first bedplate and the second bedplate to move up and down, so that an operator standing on the first bedplate is driven to move up and down along the tower, the working efficiency during maintenance of the outer wall of the tower is improved, and the working intensity and physical strength consumption of the operator are reduced.
2. The invention is provided with the auxiliary winch and the bridle, when the operator arrives at the operation position, the auxiliary winch tightens the bridle, the invention is fixed on the surface of the tower cylinder, the operator is prevented from swinging with the wind in the high altitude, the safety coefficient of the invention is increased, the accident caused by the unexpected sliding down can be prevented, and the operation quality of the operator can be improved because of the stable operation platform.
Drawings
FIG. 1 is a schematic external view of example 1;
FIG. 2 is a schematic external view of example 1 viewed from the left side of FIG. 1;
FIG. 3 is a use diagram of embodiment 1;
FIG. 4 is a schematic external view of example 2;
FIG. 5 is a use chart of embodiment 3;
in the figure:
1. a tower drum; 2. a belt; 3. a lift cord; 4. an auxiliary hoist; 5. a through hole; 6. a first platen; 7. a main hoist; 8. a second platen; 9. a third platen; 10. a support pillar; 11. a wheel carrier; 12. a reel; 13. a roller; 14. a guide tube.
Detailed Description
Example 1
As shown in fig. 1 to 3, the novel lifting platform for the outer wall of the tower 1 of the wind generating set comprises a first bedplate 6 arranged outside the tower 1, a second bedplate 8 arranged below the first bedplate 6 in parallel, a third bedplate 9 arranged below the second bedplate 8 in parallel, and a main winch 7 arranged between the first bedplate 6 and the second bedplate 8 and driven by a motor.
The main winch 7 is fixedly connected with the second bedplate 8 through screws, the first bedplate 6, the second bedplate 8 and the third bedplate 9 are all horizontally arranged, supporting columns 10 are arranged between the first bedplate 6 and the second bedplate 8 and between the second bedplate 8 and the third bedplate 9, and the first bedplate 6, the second bedplate 8 and the third bedplate 9 are fixedly connected with the corresponding supporting columns 10 through screws. The lifting rope 3 is wound on the main winch 7, the lifting rope 3 is close to the tower drum 1, the lower end of the lifting rope 3 is wound on a winding drum of the main winch 7, and the upper end of the lifting rope 3 is fixedly connected to the top of the tower drum 1. The first bedplate 6 is provided with a through hole 5 at a position corresponding to the lifting rope 3, the lifting rope 3 penetrates through the through hole 5, and the through hole 5 is in clearance fit with the lifting rope 3.
The operator stands on the first bedplate 6, and the main winch 7 can drive the operator to move up and down and reach an operation point when operating, so that the working efficiency is improved, and the working intensity and physical consumption of the operator are reduced.
The outer wall of the tower barrel 1 is provided with a belt 2, the first bedplate 6 is fixedly provided with an auxiliary winch 4 at a position close to the edge, one end of the belt 2 is fixedly connected with the first bedplate 6, the other end of the belt 2 is wound on a reel 12 of the auxiliary winch 4, and after the auxiliary winch 4 tightens the belt 2, the belt 2 is tightly held outside the tower barrel 1.
The two belts 2 are arranged up and down, the two auxiliary winches 4 are arranged up and down, the reels 12 of the two auxiliary winches 4 are vertically arranged, and the reels 12 of the two auxiliary winches 4 are located on the same axis. The reels 12 of the two auxiliary winches 4 are arranged between the first and second pallets 6 and 8 and between the second and third pallets 8 and 9, respectively.
The motor of the upper auxiliary hoist 4 is directed upward, and the motor of the lower auxiliary hoist 4 is directed downward. Two ends of a reel 12 of the upper auxiliary winch 4 are respectively and rotatably connected with the first bedplate 6 and the second bedplate 8, and the reel 12 of the lower auxiliary winch 4 is respectively and rotatably connected with the second bedplate 8 and the third bedplate 9. One end of each of the two belts 2 is wound on a corresponding reel 12, and the other end is fixedly connected with the support column 10 between the first bedplate 6 and the second bedplate 8 and the support column 10 between the second bedplate 8 and the third bedplate 9.
And the main winch 7 and the auxiliary winch 4 are both provided with band-type brakes.
Under the drive of the auxiliary winch 4, the bridle 2 is tightly held on the outer wall of the tower barrel 1, and the invention is fixed on the outer wall of the tower barrel 1 by means of friction force, and meanwhile, the invention prevents the operators from swinging with the wind in the high altitude, thereby increasing the safety factor of the invention and preventing accidents caused by unexpected sliding.
After setting up gyro wheel 13, can play the guard action to the finish paint of tower section of thick bamboo 1, prevent that the finish paint from being scraped. Meanwhile, the rollers 13 have a guiding function, so that the invention is more stable when moving up and down along the tower 1.
The working process of the invention is as follows:
1. when the operator gets on the first bedplate 6, the band-type brake on the auxiliary winch 4 is released, and the auxiliary winch 4 releases the two belts 2.
2. When the band-type brake of the main winch 4 is released and the main winch 4 is started, the invention rises together with the operator, and the roller 13 rolls along the outer wall of the tower 1. After the tower drum reaches the operation position, the contracting brake of the main winch 7 acts to lock the main winch 7, and then the two belts 2 are tightened by the two auxiliary winches 4 respectively, so that the two belts 2 are tightly embraced on the excircle of the tower drum 1.
Example 2
As shown in fig. 4, the present embodiment is different from embodiment 1 in that:
a guide pipe 14 is vertically welded on the first bedplate 6 at the position of the through hole 5, the guide pipe is coaxial with the through hole 5, the guide pipe 14 is sleeved outside the lifting rope 3, and the guide pipe 14 is in clearance fit with the lifting rope 3.
The provision of the guide tube 14 increases the vertical length of the rigid portion of the invention suspended from the lift cords 3, thereby reducing the amount of tilt of the first, second and third platens 6, 8, 9 after the belt 2 is unwound.
Example 3
As shown in fig. 5, the present embodiment is different from embodiment 1 in that:
the lifting rope 3 has two, one is close to the outer wall of a tower section of thick bamboo 1, and another keeps away from the outer wall of a tower section of thick bamboo 1, main hoist engine 7 is two, and two main hoist engines 7 all pass through screw fixed connection with second platen 7. The through holes 5 are two corresponding to the lifting ropes 3, and the lower ends of the two lifting ropes 3 are respectively wound on the winding drums of the corresponding main windlasses 7.
Because two lifting ropes 3 and two main winches 7 are arranged, the first bedplate 6, the second bedplate 8 and the third bedplate 9 can be always kept horizontal when moving up and down, and the operator on the first bedplate 6 is safer. The provision of two main winches 7 at the same time increases the reliability of the invention.
The above-mentioned embodiments are described in detail and specifically for the purpose of illustrating the technical ideas and features of the present invention, and it is an object of the present invention to enable those skilled in the art to understand the contents of the present invention and to implement the same, but not to limit the present invention only by the embodiments, and it is not limited to the scope of the present invention, i.e. equivalent changes or modifications made within the spirit of the present invention, and it is within the scope of the present invention for those skilled in the art to make local modifications within the system and changes or modifications between subsystems without departing from the structure of the present invention. At present, the technical scheme of the application has been subjected to pilot plant test, namely small-scale experiment before large-scale mass production of products; after the pilot test is finished, the investigation for the use of the user is carried out in a small range, and the investigation result shows that the satisfaction degree of the user is higher; the preparation of products for formal production for industrialization, including intellectual property risk early warning research, has been set forth.
Claims (7)
1. The utility model provides a novel aerogenerator group tower section of thick bamboo outer wall lift platform, its characterized in that, is including setting up first platen (6), parallel arrangement outside tower section of thick bamboo (1) second platen (8) and fixed main hoist engine (7) that set up on first platen (6) or second platen (8) of first platen (6) below, first platen (6) and second platen (8) are the level setting, first platen (6) and second platen (8) fixed connection, the winding has lifting rope (3) on main hoist engine (7), the lower extreme of lifting rope (3) is around on the reel of main hoist engine (7), the upper end fixed connection of lifting rope (3) is at the top of tower section of thick bamboo (1).
2. The novel lifting platform for the outer wall of the tower of the wind power generation unit as claimed in claim 1, wherein a belt (2) is arranged on the outer wall of the tower (1), an auxiliary winch (4) is fixedly arranged on the first bedplate (6) or the second bedplate (8) at a position close to the edge, one end of the belt (2) is fixedly connected with the first bedplate (6), the other end of the belt (2) is wound on a reel (12) of the auxiliary winch (4), and after the belt (2) is tensioned by the auxiliary winch (4), the belt (2) is held tightly outside the tower (1).
3. The novel wind power generation unit tower outer wall lifting platform is characterized in that a wheel carrier (11) is fixedly arranged on the first bedplate (6) or the second bedplate (8), and a roller (13) which rolls vertically along the outer wall of the tower (1) is rotatably connected to the wheel carrier (11).
4. The novel lifting platform for the outer wall of the tower of the wind power generation set according to claim 1, wherein the lifting rope (3) is close to the outer wall of the tower (1), the winch is arranged between the first bedplate (6) and the second bedplate (8), the first bedplate (6) is provided with a through hole (5) at a position corresponding to the lifting rope (3), a guide pipe (14) is fixedly arranged at the position of the through hole (5) on the first bedplate (6), the guide pipe is coaxial with the through hole (5), the guide pipe (14) is sleeved outside the lifting rope (3), and the through hole (5) and the guide pipe (14) are both in clearance fit with the lifting rope (3).
5. The novel lifting platform for the outer wall of the tower barrel of the wind generating set according to claim 2, characterized in that a third bedplate (9) is arranged below the second bedplate (8) in parallel, the third bedplate (9) is fixedly connected with the second bedplate (8), the two belts (2) are arranged up and down, the two auxiliary winches (4) are arranged up and down, reels (12) of the two auxiliary winches (4) are respectively arranged between the first bedplate (6) and the second bedplate (8) and between the second bedplate (8) and the third bedplate (9), one ends of the two belts (2) are respectively wound on the corresponding reels (12), and the other ends of the two belts are respectively fixedly connected with the first bedplate (6) and the second bedplate (8).
6. The novel wind power generation unit tower outer wall lifting platform is characterized in that the lifting ropes (3) are two, one is close to the outer wall of the tower (1), the other is far away from the outer wall of the tower (1), the main winches (7) are two, and the lower ends of the two lifting ropes (3) are wound on the winding drums of the corresponding main winches (7) respectively.
7. The novel wind generating set tower outer wall lifting platform according to claim 5, wherein support columns (10) are arranged between the first bedplate (6) and the second bedplate (8) and between the second bedplate (8) and the third bedplate (9), the first bedplate (6), the second bedplate (8) and the third bedplate (9) are fixedly connected with the corresponding support columns (10), and one ends, far away from the auxiliary winch (4), of the binding belts (2) are fixedly connected with the corresponding support columns (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210943797.3A CN115385276A (en) | 2022-08-08 | 2022-08-08 | Novel lifting platform for outer wall of tower barrel of wind driven generator set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210943797.3A CN115385276A (en) | 2022-08-08 | 2022-08-08 | Novel lifting platform for outer wall of tower barrel of wind driven generator set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115385276A true CN115385276A (en) | 2022-11-25 |
Family
ID=84118313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210943797.3A Pending CN115385276A (en) | 2022-08-08 | 2022-08-08 | Novel lifting platform for outer wall of tower barrel of wind driven generator set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115385276A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115584851A (en) * | 2022-12-13 | 2023-01-10 | 中国化学工程第十三建设有限公司 | Supporting-rod-free green slip form construction platform for cylindrical structures |
-
2022
- 2022-08-08 CN CN202210943797.3A patent/CN115385276A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115584851A (en) * | 2022-12-13 | 2023-01-10 | 中国化学工程第十三建设有限公司 | Supporting-rod-free green slip form construction platform for cylindrical structures |
| CN115584851B (en) * | 2022-12-13 | 2023-03-14 | 中国化学工程第十三建设有限公司 | Green slip form construction platform for support-rod-free cylindrical structures |
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