CN104724613A - Special crawler handling machine for manufacturing wind-power tower drum - Google Patents
Special crawler handling machine for manufacturing wind-power tower drum Download PDFInfo
- Publication number
- CN104724613A CN104724613A CN201510095359.6A CN201510095359A CN104724613A CN 104724613 A CN104724613 A CN 104724613A CN 201510095359 A CN201510095359 A CN 201510095359A CN 104724613 A CN104724613 A CN 104724613A
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- China
- Prior art keywords
- wind
- power tower
- transferring machine
- lifting platform
- crawler belt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000004519 manufacturing process Methods 0.000 title abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000000725 suspension Substances 0.000 claims description 55
- 230000005484 gravity Effects 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 18
- 230000008569 process Effects 0.000 abstract description 17
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010422 painting Methods 0.000 abstract 1
- 230000032258 transport Effects 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 5
- 239000003973 paint Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- 230000008054 signal transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
- B66C23/38—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes with separate prime movers for crane and vehicle
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a special crawler handling machine for manufacturing a wind-power tower drum. The special crawler handling machine comprises a crawler chassis, wherein a hoisting platform is fixed on the crawler chassis, a hoisting boom is fixedly installed on the hoisting platform, a plurality of groups of guide fixed pulleys are installed on the hoisting boom, an electric block is fixedly installed on the hoisting boom, a generator is fixedly installed on the hoisting platform, a hydraulic station is fixedly installed on the hoisting platform, a hook and a pulley block are connected with an output shaft of the electric block by virtue of a steel cable via the plurality of guide fixed pulleys, a counterweight block is arranged on the hoisting platform, and a control module is installed on the hoisting platform. By adopting handling machine, the hoisting and transportation work of the wind-power tower drum manufacturing unit such as transshipment, rust removal, painting, unloading, stacking of finished products and the like can be completed, a series of operation equipment used in the original operation process such as a crane, a platform lorry, a tire transshipping truck, a crawler-type transshipment platform lorry and a hydraulic jacking device can be substituted, the operation efficiency of the handling machine can be improved, and the safety in operation can be guaranteed.
Description
Technical field
The present invention relates to a kind of wind-power tower hoisting transportation apparatus field, particularly a kind of wind-power tower and manufacture special crawler belt suspension transferring machine.
Background technology
It is large that wind-power tower manufacturing cell has weight, (weight can reach 65 tons to the features such as volume is large, diameter can reach 4.5 meters, length can reach 30m), after tower cylinder unit rolls off the production line on manufacturing line, need to be produced open area that plant building arranges outward to carry out rust cleaning and spray paint, handling are field, finished product such as to pile up at the lifting transport, and these work generally all need to adopt crane in wind-power tower manufacturing, flat truck, tire transfer car(buggy), all job tasks are completed under the cooperation of a series of accessory equipments such as crawler type transport flat car and hydraulic jacking device, Job Operations process is complicated, adjustment process is loaded down with trivial details, waste time and energy but also there is certain potential safety hazard.
At present, general hoisting transportation equipment, owing to being subject to lifting weight, lifting volume, and all many-sided restrictions such as using function, the All Jobs flow process of large quality large volume blower fan tower barrel manufacturing cell cannot be completed, and the comprehensive functions such as crane in operation process, flat truck, tire transfer car(buggy), crawler type transport flat car and hydraulic jacking device cannot be substituted simultaneously.Therefore, in order to solve the problem, the blower fan tower barrel manufacturing cell needing development and Design special, to meet above-mentioned job task and workflow, effectively reduces the manufacturing cost of hoisting transportation equipment simultaneously, improve the work efficiency of blower fan tower barrel operation, ensure the safety in operation process.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of wind-power tower and manufactures special crawler belt suspension transferring machine, this suspension transferring machine can assist large quality, the transhipment rust cleaning of large volume blower fan tower barrel manufacturing cell is sprayed paint, handling are field, finished product such as to pile up at the lifting transport, the crane needing in original operation process to use can be substituted by actv., flat truck, tire transfer car(buggy), the sequence of operations implements such as crawler type transport flat car and hydraulic jacking device, substantially increase the operating efficiency of suspension transferring machine, reduce the labour intensity of staff, ensure that job safety.
The present invention is in order to reach above-mentioned technique effect, and the technical characteristic adopted is:
Wind-power tower manufactures special crawler belt suspension transferring machine, it comprises crawler body, lifting platform is fixed on crawler body, lifting platform is installed with elevator boom rack, elevator boom rack is provided with many group guiding fixed pulleys, electric block is fixedly mounted on elevator boom rack, electrical generator is fixedly mounted on lifting platform, Hydraulic Station is fixedly mounted on lifting platform, suspension hook and assembly pulley are connected with the output shaft of electric block through too much organizing guiding fixed pulley by wirerope, clump weight is arranged on lifting platform, and control module is arranged on lifting platform.
Described lifting platform to be welded mutually with crawler body by shaped steel and forms a fixed connection, and relative rotary motion can not occur between lifting platform and crawler body.
Described elevator boom rack adopts truss structure, and the quantity of elevator boom rack is two, has certain spacing between two elevator boom racks.
The quantity of described suspension hook and assembly pulley is two, is separately fixed on two elevator boom racks, and suspension hook and assembly pulley are that the combined mode of fixed pulley and movable pulley is formed.
The height of described suspension hook and assembly pulley can be independent adjust respectively.
The center of gravity of described crawler body center of gravity, elevator boom rack and the center of gravity of wind-power tower are all within the support span of crawler body.
The locus of described electrical generator, electric block and Hydraulic Station is arranged, the quality of clump weight is minimized.
Described elevator boom rack is at the biggest lifting capacity and when walking, the weight that can lift wind-power tower reaches 65 ~ 80 tons, and oad diameter reaches 4.5m, and length reaches 30m, can advance, retreat, turn and 360 degree of complete machines rotations when the biggest lifting capacity.
Described control module can accept extraneous wireless control signal, is controlled the various actions of whole suspension transferring machine by the mode of remote control, does not need to set up operator's compartment and carries out artificial mechanism operation.
The lifting altitude of described suspension transferring machine can reach 1.5m at most.
The present invention has following beneficial effect:
The present invention adopts above-mentioned design, can under blower fan tower barrel manufacturing cell complex job environment, lifting transports such as having assisted its transhipment rust cleaning to spray paint, loaded and unloaded field, finished product is piled up, the sequence of operations implements such as crane, flat truck, tire transfer car(buggy), crawler type transport flat car and the hydraulic jacking device needing to use can be substituted in original operation process by actv., this suspension transferring machine operation process is stablized, easy to operate, operation process is safe and reliable.
Above-mentioned lifting platform to be welded mutually with crawler body by shaped steel and forms a fixed connection, and relative rotary motion can not occur, can ensure the resistance to overturning of suspension transferring machine in handling large-tonnage blower fan tower barrel process by said structure between lifting platform and crawler body.
Above-mentioned elevator boom rack adopts truss structure, the quantity of elevator boom rack is two, certain spacing is had between two elevator boom racks, can by the diff-H of control two arm by the structure design of two arm, thus realize tower cylinder in handling process and to tilt vertically certain angle, to adapt to the walking of loop wheel machine in certain domatic walking.
The quantity of above-mentioned suspension hook and assembly pulley is two, be separately fixed on two elevator boom racks, suspension hook and assembly pulley are that the combined mode of fixed pulley and movable pulley is formed, and can alleviate the stressed of single wirerope, improve the safety of its handling by the unitized design of the movable pulley of fixed pulley.
The height of above-mentioned suspension hook and assembly pulley can be independent adjust respectively, and then realize the adjustment at air duct angle of inclination in handling process.
The center of gravity of above-mentioned crawler body center of gravity, elevator boom rack and the center of gravity of wind-power tower, all within the support span of crawler body, can ensure suspension transferring machine by above-mentioned design, and the security and stability of complete machine in operational process, prevents the possibility that loop wheel machine topples.
The locus of above-mentioned electrical generator, electric block and Hydraulic Station is arranged, the quality of clump weight is minimized, and is arranged and can be alleviated the quality of clump weight by actv., thus the weight of complete machine is alleviated by rational space.
Above-mentioned elevator boom rack is at the biggest lifting capacity and when walking, the weight that can lift wind-power tower reaches 65 ~ 80 tons, oad diameter reaches 4.5m, length reaches 30m, can advance when the biggest lifting capacity, retreat, turn and 360 degree of complete machines rotations, thus ensure that suspension transferring machine can the handling realizing large-tonnage wind-power tower of safety, and it can be assisted to complete rust cleaning spray paint, load and unload field, finished product and the lifting transport such as to pile up.
Above-mentioned control module can accept extraneous wireless control signal, the various actions of whole suspension transferring machine is controlled by the mode of remote control, do not need to set up operator's compartment and carry out artificial mechanism operation, thus further optimize the structure of suspension transferring machine, make the performance of suspension transferring machine more superior, operation controls convenient.
The lifting altitude of above-mentioned suspension transferring machine can reach 1.5m at most, can ensure carrying out the safety in wind-power tower handling process by the restriction of lifting altitude.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is integral installation distribution structure schematic diagram of the present invention.
In figure: crawler body 1, electric block 2, electrical generator 3, guiding fixed pulley 4, elevator boom rack 5, suspension hook and assembly pulley 6, lifting platform 7, Hydraulic Station 8, clump weight 9, control module 10, wind-power tower 11.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
See Fig. 1, installation concrete in figure and connection mode have, wind-power tower manufactures special crawler belt suspension transferring machine, it comprises crawler body 1, lifting platform 7 is fixed on crawler body 1, lifting platform 7 is installed with elevator boom rack 5, elevator boom rack 5 is provided with many group guiding fixed pulleys 4, electric block 2 is fixedly mounted on elevator boom rack 5, electrical generator 3 is fixedly mounted on lifting platform 7, Hydraulic Station 8 is fixedly mounted on lifting platform 7, suspension hook and assembly pulley 6 are connected with the output shaft of electric block 2 through too much organizing guiding fixed pulley 4 by wirerope, clump weight 9 is arranged on lifting platform 7, control module 10 is arranged on lifting platform 7.
Preferably, described lifting platform 7 to be welded mutually with crawler body 1 by shaped steel and forms a fixed connection, relative rotary motion can not occur between lifting platform 7 and crawler body 1, the mode that also can be bolted is fixed connection, ensures the stability of handling process.
Preferably, described elevator boom rack 5 adopts truss structure, the quantity of elevator boom rack 5 is two, certain spacing is had between two elevator boom racks 5, adopt truss structure can improve the intensity of elevator boom rack 5, ensure the stability of its structure, the connection between elevator boom rack 5 and lifting platform 7 can adopt high slight bolt to connect, and the mode of welding also can be adopted to carry out.
Preferably, the quantity of described suspension hook and assembly pulley 6 is two, is separately fixed on two elevator boom racks 5, and suspension hook and assembly pulley 6 are that the combined mode of fixed pulley and movable pulley is formed, and the quantity of crown block and movable pulley can be selected according to actual conditions.
Preferably, what the height of described suspension hook and assembly pulley 6 can be independent adjusts respectively.
Preferably, the center of gravity of described crawler body 1 center of gravity, elevator boom rack 5 and the center of gravity of wind-power tower 11 are all within the support span of crawler body 1.
Preferably, the locus of described electrical generator 3, electric block 2 and Hydraulic Station 8 is arranged, the quality of clump weight 9 is minimized, and the quality of clump weight can be selected according to the job requirement of reality.
Preferably, described elevator boom rack 5 is at the biggest lifting capacity and when walking, the weight that can lift wind-power tower 11 reaches 65 ~ 80 tons, oad diameter reaches 4.5m, length reaches 30m, can advance when the biggest lifting capacity, retreat, turn and 360 degree of complete machines rotations, thus ensure that suspension transferring machine can assist whole job task.
Preferably, described control module 10 can accept extraneous wireless control signal, the various actions of whole suspension transferring machine is controlled by the mode of remote control, do not need to set up operator's compartment and carry out artificial mechanism operation, control module can adopt local area network signal to transmit, infrared signal transmission, the various control Signal transmissions such as WIFI signal transmission.
Preferably, the lifting altitude of described suspension transferring machine can reach 1.5m at most, can ensure the safety of handling appliance by actv., prevent to topple by restriction lifting altitude.
Optionally, described crawler body 1 also can adopt rubber belt track, thus ensures that suspension transferring machine can run at hard surfacing, reaches the effect of not hindering road surface, simultaneously also can the thickness on less mixed earth road surface.
Optionally, the lifter and elevating system that described electric block 2 is formed, also can adopt other the lifting mechanism such as winch to substitute.
Optionally, described electrical generator 3 can be diesel-engine generator, or the electrical generator of other types.
Device specific works process of the present invention and principle are:
First, by fixing device, wind-power tower 11 is carried out clamping to install, and the suspension hook of whole clamping mechanism and suspension transferring machine and assembly pulley 6 are connected, then, start the electrical generator 3 of suspension transferring machine, driving electric cucurbit 2 pairs of suspension hooks and assembly pulley 6 promote again, and can be adjusted by the angle of inclination of height to wind-power tower 11 of adjustment two suspension hook and assembly pulley 6, thus ensure that it can travel at tilted road surface, the turning walking of whole suspension transferring machine can also be realized by the walking of crawler body 1 simultaneously, rust cleaning can have been assisted to spray paint by other auxiliary mechanisies simultaneously, handling are field, finished product such as to pile up at the lifting transport, improve the efficiency of whole lifting job, ensure that the safety of operation.
Claims (10)
1. wind-power tower manufactures special crawler belt suspension transferring machine, it comprises crawler body (1), it is characterized in that: lifting platform (7) is fixed on crawler body (1), lifting platform (7) is installed with elevator boom rack (5), elevator boom rack (5) is provided with many groups guiding fixed pulley (4), electric block (2) is fixedly mounted on elevator boom rack (5), electrical generator (3) is fixedly mounted on lifting platform (7), Hydraulic Station (8) is fixedly mounted on lifting platform (7), suspension hook and assembly pulley (6) are connected with the output shaft of electric block (2) through too much organizing guiding fixed pulley (4) by wirerope, clump weight (9) is arranged on lifting platform (7), control module (10) is arranged on lifting platform (7).
2. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: described lifting platform (7) to be welded mutually with crawler body (1) by shaped steel and forms a fixed connection, and relative rotary motion can not occur between lifting platform (7) and crawler body (1).
3. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: described elevator boom rack (5) adopts truss structure, and the quantity of elevator boom rack (5) is two, and two elevator boom racks have certain spacing between (5).
4. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: the quantity of described suspension hook and assembly pulley (6) is two, be separately fixed on two elevator boom racks (5), suspension hook and assembly pulley (6) are that the combined mode of fixed pulley and movable pulley is formed.
5. the wind-power tower according to claim 1 or 4 manufactures special crawler belt suspension transferring machine, it is characterized in that: what the height of described suspension hook and assembly pulley (6) can be independent adjusts respectively.
6. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: the center of gravity of described crawler body (1) center of gravity, elevator boom rack (5) and the center of gravity of wind-power tower (11) are all within the support span of crawler body (1).
7. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: the locus of described electrical generator (3), electric block (2) and Hydraulic Station (8) is arranged, the quality of clump weight (9) is minimized.
8. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: described elevator boom rack (5) at the biggest lifting capacity and walk time, the weight that can lift wind-power tower (11) reaches 65 ~ 80 tons, oad diameter reaches 4.5m, length reaches 30m, can advance, retreat, turn and 360 degree of complete machines rotations when the biggest lifting capacity.
9. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: described control module (10) can accept extraneous wireless control signal, controlled the various actions of whole suspension transferring machine by the mode of remote control, do not need to set up operator's compartment and carry out artificial mechanism operation.
10. wind-power tower according to claim 1 manufactures special crawler belt suspension transferring machine, it is characterized in that: the lifting altitude of described suspension transferring machine can reach 1.5m at most.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095359.6A CN104724613B (en) | 2015-03-04 | 2015-03-04 | Wind-power tower manufactures special crawler belt suspension transferring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095359.6A CN104724613B (en) | 2015-03-04 | 2015-03-04 | Wind-power tower manufactures special crawler belt suspension transferring machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104724613A true CN104724613A (en) | 2015-06-24 |
| CN104724613B CN104724613B (en) | 2017-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510095359.6A Expired - Fee Related CN104724613B (en) | 2015-03-04 | 2015-03-04 | Wind-power tower manufactures special crawler belt suspension transferring machine |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977530A (en) * | 1974-06-13 | 1976-08-31 | The Manitowoc Company, Inc. | Crane with gantry backhitch and boom hoist assembly removable as a unit |
| US4266903A (en) * | 1979-08-27 | 1981-05-12 | Offset Newspaper Equipment Inc. | Lifting dollie |
| SU1625821A1 (en) * | 1988-07-26 | 1991-02-07 | Киевский Филиал Научно-Производственного Объединения "Техэнергохимпром" | Carriage-mounted crane |
| CN2153536Y (en) * | 1993-04-08 | 1994-01-19 | 章崇焕 | Trackless wheel type crane |
| US5443169A (en) * | 1992-09-15 | 1995-08-22 | The Manitowoc Company | Crane backhitch |
| CN204454333U (en) * | 2015-03-04 | 2015-07-08 | 中国葛洲坝集团股份有限公司 | Wind-power tower manufactures special crawler belt suspension transferring machine |
-
2015
- 2015-03-04 CN CN201510095359.6A patent/CN104724613B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3977530A (en) * | 1974-06-13 | 1976-08-31 | The Manitowoc Company, Inc. | Crane with gantry backhitch and boom hoist assembly removable as a unit |
| US4266903A (en) * | 1979-08-27 | 1981-05-12 | Offset Newspaper Equipment Inc. | Lifting dollie |
| SU1625821A1 (en) * | 1988-07-26 | 1991-02-07 | Киевский Филиал Научно-Производственного Объединения "Техэнергохимпром" | Carriage-mounted crane |
| US5443169A (en) * | 1992-09-15 | 1995-08-22 | The Manitowoc Company | Crane backhitch |
| CN2153536Y (en) * | 1993-04-08 | 1994-01-19 | 章崇焕 | Trackless wheel type crane |
| CN204454333U (en) * | 2015-03-04 | 2015-07-08 | 中国葛洲坝集团股份有限公司 | Wind-power tower manufactures special crawler belt suspension transferring machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104724613B (en) | 2017-06-30 |
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Address after: 430033 Hubei province in Qiaokou District of Wuhan City Jiefang Road Gezhouba Dam Building No. 558 Applicant after: CHINA GEZHOUBA GROUP Co.,Ltd. Applicant after: GEZHOUBA GROUP MECHANICAL & ELECTRICAL CONSTRUTION Co.,Ltd. Address before: 443002 Hubei province Yichang City Road No. 1 Applicant before: CHINA GEZHOUBA GROUP Co.,Ltd. Applicant before: GEZHOUBA GROUP MECHANICAL & ELECTRICAL CONSTRUTION Co.,Ltd. |
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Address after: 430033 Hubei province in Qiaokou District of Wuhan City Jiefang Road Gezhouba Dam Building No. 558 Applicant after: CHINA GEZHOUBA GROUP Co.,Ltd. Applicant after: CHINA GEZHOUBA GROUP MECHANICAL & ELECTRICAL CONSTRUCTION Co.,Ltd. Address before: 430033 Hubei province in Qiaokou District of Wuhan City Jiefang Road Gezhouba Dam Building No. 558 Applicant before: CHINA GEZHOUBA GROUP Co.,Ltd. Applicant before: GEZHOUBA GROUP MECHANICAL & ELECTRICAL CONSTRUTION Co.,Ltd. |
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Effective date of registration: 20170601 Address after: 610015 Sichuan City, Qingyang province Qingyang Industrial Development Zone (Eastern District) into the road, No. 4, building No. 1, Applicant after: CHINA GEZHOUBA GROUP MECHANICAL & ELECTRICAL CONSTRUCTION Co.,Ltd. Address before: 430033 Hubei province in Qiaokou District of Wuhan City Jiefang Road Gezhouba Dam Building No. 558 Applicant before: CHINA GEZHOUBA GROUP Co.,Ltd. Applicant before: CHINA GEZHOUBA GROUP MECHANICAL & ELECTRICAL CONSTRUCTION Co.,Ltd. |
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