CN101885129A - Shell ring assembly device for assembly of tower body of wind power generation iron tower - Google Patents
Shell ring assembly device for assembly of tower body of wind power generation iron towerDownload PDFInfo
- Publication number
- CN101885129A CN101885129ACN 201010219397CN201010219397ACN101885129ACN 101885129 ACN101885129 ACN 101885129ACN 201010219397CN201010219397CN 201010219397CN 201010219397 ACN201010219397 ACN 201010219397ACN 101885129 ACN101885129 ACN 101885129A
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- wind power
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- XEEYBQQBJWHFJM-UHFFFAOYSA-NIronChemical compound[Fe]XEEYBQQBJWHFJM-UHFFFAOYSA-N0.000titleclaimsabstractdescription48
- 229910052742ironInorganic materials0.000titleclaimsabstractdescription24
- 238000010248power generationMethods0.000titleclaimsabstractdescription24
- 239000003638chemical reducing agentSubstances0.000claimsdescription11
- 230000000295complement effectEffects0.000claimsdescription3
- 238000003754machiningMethods0.000abstract2
- 238000000034methodMethods0.000description5
- 238000003466weldingMethods0.000description5
- 238000004519manufacturing processMethods0.000description3
- 238000005516engineering processMethods0.000description2
- 210000001503jointAnatomy0.000description2
- 230000009286beneficial effectEffects0.000description1
- 238000006243chemical reactionMethods0.000description1
- 230000001771impaired effectEffects0.000description1
- 239000000463materialSubstances0.000description1
- 229910000679solderInorganic materials0.000description1
- 238000005476solderingMethods0.000description1
- 230000000087stabilizing effectEffects0.000description1
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Abstract
Description
Technical field
The present invention relates to the wind power generation iron tower technical field of processing equipment, relate in particular to a kind of shell ring group of tower body of wind power generation iron tower assembling that is used for device.
Background technology
The tower body of wind power generation iron tower is welded by many groups shell ring, because the tower body diameter is bigger, the wall ratio of shell ring is thicker, and in manufacturing process, shell ring welding difficulty is relatively big.Traditional shell ring group to method is: will need to organize right shell ring earlier and be lifted on easy group on the frock, and then with draw horse, the method for the son of checking card is grouping, point needs to put another point with driving upset shell ring after to what a point again, circulation successively, thus the group of finishing shell ring is right.This traditional group bothers when the axiality of adjusting between two groups of shell rings mode very much, often is difficult to align two groups of shell rings, and operator's labour intensity is very big, and operating efficiency is very low; The group of each point lifts with driving all needing, and will certainly take a large amount of resources of production as driving, personnel, has strengthened to produce to consume; Owing to be subjected to simple and easy group to the friction of frock and often the shell ring surface is impaired, repair rate is higher to the back for group; Because of the solder joint of needs with angle grinding machine reconditioning spot welding clamp, presentation quality also can reduce greatly.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of shell ring group of tower body of wind power generation iron tower assembling that is used for to device, the axialities of many group shell rings are difficult to adjust when assembling to solve tower body of wind power generation iron tower, operator's labour intensity is big, ineffective technical problem.
For solving the problems of the technologies described above, technical scheme of the present invention is: the shell ring group that is used for tower body of wind power generation iron tower assembling is to device, comprises that at least two groups all are slidingly mounted on group on the horizontal rail to the unit; Described group comprises the turning rolls that is installed on the described horizontal rail to the unit, and described turning rolls is provided with the roller that is complementary with described horizontal rail, and the upper surface of described turning rolls is provided with slide rail, and described slide rail is vertical with the bearing of trend of horizontal rail; Two runners that are used for the support shell ring, described two runner slide in opposition are installed on the described slide rail.
As a kind of improvement, described two runners are connected with force application apparatus respectively, and the application of force direction of described force application apparatus is consistent with the bearing of trend of described slide rail, and described force application apparatus one end is articulated on the described turning rolls, and the other end is articulated on the described runner.
As further improvement, described force application apparatus is a hydraulic jack, and the tailstock of described hydraulic jack is articulated on the described turning rolls, and the piston rod of described hydraulic jack is articulated on the described runner.
Improve as another kind, described two runners are threadedly connected to respectively on the screw rod that is driven by first power set, and described screw rod rotates and is installed on the described turning rolls, and described screw rod is consistent with the bearing of trend of described slide rail, and described screw rod is provided with forward and reverse screw thread.
Improve as another kind, described group to having at least one group of group that the roller of unit is connected with second power set in the unit.
As further improvement, described second power set are second motor reducer.
Improve as another kind, described group to having at least one group of group that the runner of unit is connected with the 3rd power set in the unit.
As further improvement, described the 3rd power set are the 3rd motor reducer.
Improve as another kind, the surface of described runner is coated with overcoat.
As further improvement, described overcoat is a rubber layer.
After having adopted technique scheme, the invention has the beneficial effects as follows: form because the shell ring group is slidingly mounted on the horizontal rail the unit by many groups group device, make the shell ring group can organize simultaneously, improved production efficiency many groups shell ring to device; Owing to organize the runner that the turning rolls of unit is provided with two slide in opposition, when shell ring is placed on the runner,, can adjust the center height of shell ring by adjusting two distances between the runner, conveniently adjust the axiality of two groups of shell rings.
Owing to have at least one group of group that the roller of unit is driven by second power set, make the shell ring group to the time can replace traditional driving and lift by the second power set driving group to cell moving, reduced operator's labour intensity.
Owing to have at least one group of group that the runner of unit is driven by the 3rd power set, the shell ring group to the time, driving runner by the 3rd power set rotates, thereby driving shell ring rotates, make the shell ring soldering group to the time simple to operate, efficient is higher, tradition is artificial rotates or shell ring is rotated in the driving lifting, group nearly shortens 2/3rds to the time, and operator's labour intensity greatly reduces.
Because the surface of runner is coated with rubber layer, make that in organizing process, when shell ring rotated, the shell ring surface can not be worn or scratch under runner drives, group greatly improves the presentation quality of back tower body, has reduced and has reprocessed, and has saved manpower and materials.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the structural representation of the embodiment of the invention two;
Fig. 4 is the structural representation of runner;
Fig. 5 is the working state schematic representation of the embodiment of the invention;
Fig. 6 is the enlarged drawing of A-A among Fig. 5;
Among the figure: 1, horizontal rail, 2, turning rolls, 3, roller, 4, second motor reducer, 5, runner, 51, rubber layer, 6, the 3rd motor reducer, 7, slide rail, 8, hydraulic jack, 10, first motor reducer, 11, screw rod, 12, first groups to the unit, and 13, second groups to the unit, 14, the 3rd group to the unit, and 15, the 4th groups to the unit.
The specific embodiment
Embodiment one:
As Fig. 1, Fig. 2 and shown in Figure 4, a kind of shell ring group that is used for tower body of wind power generation iron tower assembling is to device, comprises that at least two groups all are slidingly mounted on group on the horizontal rail 1 to the unit; Described group comprises theturning rolls 2 that is installed on the described horizontal rail 1 to the unit, described turningrolls 2 is provided with theroller 3 that is complementary with described horizontal rail 1, describedroller 3 is arranged at two sides of turningrolls 2 or the bottom surface ofturning rolls 2, the upper surface of describedturning rolls 2 is provided withslide rail 7, and describedslide rail 7 is vertical with the bearing of trend of horizontal rail 1; Tworunners 5 that are used for the support shell ring, described tworunner 5 slide in opposition are installed on the describedslide rail 7.
Described tworunners 5 are connected with force application apparatus respectively, and the application of force direction of described force application apparatus is consistent with the bearing of trend of describedslide rail 7, and described force application apparatus one end is articulated on the describedturning rolls 2, and the other end is articulated on the described runner 5.Described force application apparatus is preferablyhydraulic jack 8, and the tailstock of describedhydraulic jack 8 is articulated on the described turning rolls, and the piston rod of described hydraulic jack is articulated on the describedrunner 5.
Described group to having at least one group of group that theroller 3 of unit is connected with second power set in the unit, described second power set are preferably second motor reducer 4, the group that contains theroller 3 that drives by second power set to the unit as active walking group to the unit, can on horizontal rail 1, move.The group that does not contain second power set to the unit as driven walking group to the unit, when shell ring be placed on initiatively the walking group to unit and driven walking group to the unit on after, by active walking group moving to the unit, drive driven walking group to cell moving, make the shell ring of the close fixed-site of shell ring that needs welding, form outer girth joint.
Described group to having at least one group of group that therunner 5 of unit is connected with the 3rd power set in the unit, described the 3rd power set are preferably the3rd motor reducer 6, the threemotor reducers 6 and drive runners and rotate, thereby drive shell ring self around center steering.
The surface of describedrunner 5 is coated with overcoat, and described overcoat is arubber layer 51, has reduced the wearing and tearing to shell ring effectively.
Embodiment two:
As shown in Figure 3, a kind of shell ring group of tower body of wind power generation iron tower assembling that is used for is to device, its structure and embodiment one are basic identical, its difference is: described tworunners 5 are threadedly connected to respectively on thescrew rod 11 that is driven by first power set, describedscrew rod 11 rotates and is installed on the describedturning rolls 2, describedscrew rod 11 is consistent with the bearing of trend of describedslide rail 7, and describedscrew rod 11 is provided with forward and reverse screw thread, and first power set are preferablyfirst motor reducer 10.
From frequent degree and the cost consideration of using, first power set can be replaced with a handwheel, adjust the center height of shell ring by the distance between tworunners 5 of manually-operated.
Its operation principle is as follows:
As shown in Figure 5 and Figure 6, horizontal rail is provided with four groups of groups to the unit, be followed successively by first group tounit 12, second group to unit 13, the 3rd group tounit 14 and the 4th group tounit 15, wherein second group drives by power set unit 13 and the3rd group roller 3 tounit 14, and second group also drives by power set unit 13 and the 3rd group ofrunner 5 to unit 14.With first segment the shell ring of the good circularity in school be placed on the 3rd group tounit 14 and the 4th group on theunit 15, then shell ring of another joint school good circularity is placed on first group tounit 12 and second group on the unit 13, adjust every group of group then to the distance between the runner on theunit 5, adjust the center height of two shell rings, guarantee that two shell ring unfitnesses of butt joint level off to zero, at this moment it is right to adopt electric welding machine to put, the point to the time need guarantee that this means of spot welds is firm, use the power set that driverunner 5 then, shell ring is flipped an angle, adopt then identical method with this unfitness of butt joint level off to zero position put right, by that analogy, along with the stabilizing effective revolution of shell ring, two adjacent shell rings have been finished group quickly in a week right.Adjust the 3rd group then to 5 spacings of the runner on theunit 14,runner 5 and shell ring are disengaged, utilize second group unit 13 moved to the 3rd group shell ring tounit 14, second group of this moment should be positioned as close to the 3rd group tounit 14 to unit 13, and then with the 3rd group ofrunner 5 contact shell rings tounit 14, break away from shell ring with second group ofrunner 5 to unit 13 this moment again, handling the 3rd group drags backward tounit 14, repeatable operation like this, with organize to good shell ring move to make fully the 3rd group tounit 14 and the 4th group tounit 15 supports, so that have another shell ring be placed on first group tounit 12 and second group on the unit 13, proceed welding.This mode of operation has replaced traditional driving lifting, has reduced operator's labour intensity, has improved operating efficiency greatly.
The present invention is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, all conversion of having done all drop within protection scope of the present invention.
Claims (10)
1. the shell ring group that is used for tower body of wind power generation iron tower assembling is to device, comprises that at least two groups all are slidingly mounted on group on the horizontal rail to the unit; It is characterized in that: described group comprises the unit
Be installed on the turning rolls on the described horizontal rail, described turning rolls is provided with the roller that is complementary with described horizontal rail, and the upper surface of described turning rolls is provided with slide rail, and described slide rail is vertical with the bearing of trend of horizontal rail;
Two runners that are used for the support shell ring, described two runner slide in opposition are installed on the described slide rail.
2. the shell ring group of tower body of wind power generation iron tower assembling that is used for as claimed in claim 1 is to device, it is characterized in that: described two runners are connected with force application apparatus respectively, the application of force direction of described force application apparatus is consistent with the bearing of trend of described slide rail, described force application apparatus one end is articulated on the described turning rolls, and the other end is articulated on the described runner.
3. the shell ring group of tower body of wind power generation iron tower assembling that is used for as claimed in claim 2 is to device, it is characterized in that: described force application apparatus is a hydraulic jack, the tailstock of described hydraulic jack is articulated on the described turning rolls, and the piston rod of described hydraulic jack is articulated on the described runner.
4. the shell ring group of tower body of wind power generation iron tower assembling that is used for as claimed in claim 1 is to device, it is characterized in that: described two runners are threadedly connected to respectively on the screw rod that is driven by first power set, described screw rod rotates and is installed on the described turning rolls, described screw rod is consistent with the bearing of trend of described slide rail, and described screw rod is provided with forward and reverse screw thread.
As the described shell ring group that any is used for tower body of wind power generation iron tower assembling of claim 1 to 4 to device, it is characterized in that: described group to having at least one group of group that the roller of unit is connected with second power set in the unit.
6. the shell ring group that is used for the tower body of wind power generation iron tower assembling as claimed in claim 5 is to device, and it is characterized in that: described second power set are second motor reducer.
As the described shell ring group that any is used for tower body of wind power generation iron tower assembling of claim 1 to 4 to device, it is characterized in that: described group to having at least one group of group that the runner of unit is connected with the 3rd power set in the unit.
8. the shell ring group that is used for the tower body of wind power generation iron tower assembling as claimed in claim 7 is to device, and it is characterized in that: described the 3rd power set are the 3rd motor reducer.
9. the shell ring group that is used for the tower body of wind power generation iron tower assembling as claimed in claim 1 is to device, and it is characterized in that: the surface of described runner is coated with overcoat.
10. the shell ring group that is used for the tower body of wind power generation iron tower assembling as claimed in claim 9 is to device, and it is characterized in that: described overcoat is a rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010219397CN101885129A (en) | 2010-06-30 | 2010-06-30 | Shell ring assembly device for assembly of tower body of wind power generation iron tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010219397CN101885129A (en) | 2010-06-30 | 2010-06-30 | Shell ring assembly device for assembly of tower body of wind power generation iron tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101885129Atrue CN101885129A (en) | 2010-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010219397PendingCN101885129A (en) | 2010-06-30 | 2010-06-30 | Shell ring assembly device for assembly of tower body of wind power generation iron tower |
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| CN (1) | CN101885129A (en) |
Cited By (28)
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|---|---|---|---|---|
| CN102161145A (en)* | 2011-05-24 | 2011-08-24 | 天津重钢机械装备股份有限公司 | Rotating device for welding large member |
| CN102485403A (en)* | 2010-12-03 | 2012-06-06 | 中国有色（沈阳）冶金机械有限公司 | Cylinder welding frame body device |
| CN102717223A (en)* | 2012-06-30 | 2012-10-10 | 成都阿朗科技有限责任公司 | Adjustable roller carrier |
| CN102935575A (en)* | 2012-11-19 | 2013-02-20 | 南京奥特电气股份有限公司 | Large-pipe-diameter shell section pair group extension device |
| CN102962780A (en)* | 2012-10-26 | 2013-03-13 | 南通德玛瑞机械制造有限公司 | Barrel installation rack |
| CN103084776A (en)* | 2013-01-29 | 2013-05-08 | 浙江大大不锈钢有限公司 | Welding aerating roller carrier |
| CN103103928A (en)* | 2013-03-08 | 2013-05-15 | 中国建筑第六工程局有限公司 | Auxiliary tool for consistent installation between tension rod and stay cable head and use method of auxiliary tool |
| CN103331534A (en)* | 2012-12-18 | 2013-10-02 | 南通振华重型装备制造有限公司 | Alligator assembly technology of cylinder bodies for offshore wind power |
| CN103358085A (en)* | 2013-08-06 | 2013-10-23 | 武桥重工集团股份有限公司 | Butt-joint supporting roller carrier for conical steel frame and circular steel tube |
| CN103394860A (en)* | 2013-07-23 | 2013-11-20 | 济南轨道交通装备有限责任公司 | Turning auxiliary device for tanks with projecting parts on outer walls |
| CN103464956A (en)* | 2013-08-07 | 2013-12-25 | 无锡市恒通石油机械有限公司 | Welding roller carrier |
| CN103831573A (en)* | 2012-11-27 | 2014-06-04 | 宜兴市汇富机械设备有限公司 | Tool special for tower assembling and welding |
| CN104690480A (en)* | 2015-04-03 | 2015-06-10 | 浙江国星实业有限公司 | Support for welding drum |
| CN105057967A (en)* | 2015-08-19 | 2015-11-18 | 山东豪迈重工有限公司 | Pipe assembly welding external clamping device |
| CN105904111A (en)* | 2016-04-05 | 2016-08-31 | 福建帆新能源装备制造有限公司 | Assembly process of tower sections for large-diameter wind-power tower tube |
| CN105945506A (en)* | 2016-07-19 | 2016-09-21 | 天顺风能(苏州)股份有限公司 | Self-adjusting roller carrier |
| CN106181207A (en)* | 2016-08-29 | 2016-12-07 | 中国水利水电第三工程局有限公司 | A kind of penstock assembly device |
| CN106735789A (en)* | 2015-11-25 | 2017-05-31 | 沈阳鼓风机集团压力容器有限公司 | Pipe fitting welding frock |
| CN106975888A (en)* | 2017-04-25 | 2017-07-25 | 无锡市明骥智能机械有限公司 | The Self-debugging turning rolls for automatically adjusting machine people regulation and control is installed |
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| CN108544172A (en)* | 2018-04-24 | 2018-09-18 | 马鞍山市中天机械制造安装有限公司 | A kind of wear-resisting fagging welding turntable of water slag groove |
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| CN112756901A (en)* | 2021-01-15 | 2021-05-07 | 江苏普达迪泰精密机电装备科技有限公司 | Tank body butt joint system |
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| CN102485403A (en)* | 2010-12-03 | 2012-06-06 | 中国有色（沈阳）冶金机械有限公司 | Cylinder welding frame body device |
| CN102161145A (en)* | 2011-05-24 | 2011-08-24 | 天津重钢机械装备股份有限公司 | Rotating device for welding large member |
| CN102717223A (en)* | 2012-06-30 | 2012-10-10 | 成都阿朗科技有限责任公司 | Adjustable roller carrier |
| CN102717223B (en)* | 2012-06-30 | 2014-12-10 | 成都阿朗科技有限责任公司 | Adjustable roller carrier |
| CN102962780A (en)* | 2012-10-26 | 2013-03-13 | 南通德玛瑞机械制造有限公司 | Barrel installation rack |
| CN102935575A (en)* | 2012-11-19 | 2013-02-20 | 南京奥特电气股份有限公司 | Large-pipe-diameter shell section pair group extension device |
| CN102935575B (en)* | 2012-11-19 | 2015-05-20 | 南京奥特电气股份有限公司 | Large-pipe-diameter shell section pair group extension device |
| CN103831573A (en)* | 2012-11-27 | 2014-06-04 | 宜兴市汇富机械设备有限公司 | Tool special for tower assembling and welding |
| CN103331534A (en)* | 2012-12-18 | 2013-10-02 | 南通振华重型装备制造有限公司 | Alligator assembly technology of cylinder bodies for offshore wind power |
| CN103331534B (en)* | 2012-12-18 | 2015-08-12 | 南通振华重型装备制造有限公司 | Offshore wind farm by cylinder crocodile formula group to technique |
| CN103084776A (en)* | 2013-01-29 | 2013-05-08 | 浙江大大不锈钢有限公司 | Welding aerating roller carrier |
| CN103103928A (en)* | 2013-03-08 | 2013-05-15 | 中国建筑第六工程局有限公司 | Auxiliary tool for consistent installation between tension rod and stay cable head and use method of auxiliary tool |
| CN103103928B (en)* | 2013-03-08 | 2015-09-23 | 中国建筑第六工程局有限公司 | To coincide the aid and using method thereof installed for tension rod and stay cable head |
| CN103394860A (en)* | 2013-07-23 | 2013-11-20 | 济南轨道交通装备有限责任公司 | Turning auxiliary device for tanks with projecting parts on outer walls |
| CN103394860B (en)* | 2013-07-23 | 2016-02-24 | 济南轨道交通装备有限责任公司 | Outer wall has the upset servicing unit of prodger tank body |
| CN103358085A (en)* | 2013-08-06 | 2013-10-23 | 武桥重工集团股份有限公司 | Butt-joint supporting roller carrier for conical steel frame and circular steel tube |
| CN103464956A (en)* | 2013-08-07 | 2013-12-25 | 无锡市恒通石油机械有限公司 | Welding roller carrier |
| CN104690480A (en)* | 2015-04-03 | 2015-06-10 | 浙江国星实业有限公司 | Support for welding drum |
| CN105057967A (en)* | 2015-08-19 | 2015-11-18 | 山东豪迈重工有限公司 | Pipe assembly welding external clamping device |
| CN106735789A (en)* | 2015-11-25 | 2017-05-31 | 沈阳鼓风机集团压力容器有限公司 | Pipe fitting welding frock |
| CN106735789B (en)* | 2015-11-25 | 2018-11-27 | 沈阳鼓风机集团压力容器有限公司 | Pipe fitting welding tooling |
| CN105904111A (en)* | 2016-04-05 | 2016-08-31 | 福建帆新能源装备制造有限公司 | Assembly process of tower sections for large-diameter wind-power tower tube |
| CN105945506A (en)* | 2016-07-19 | 2016-09-21 | 天顺风能(苏州)股份有限公司 | Self-adjusting roller carrier |
| CN105945506B (en)* | 2016-07-19 | 2018-02-06 | 天顺风能(苏州)股份有限公司 | Be self-regulated turning rolls |
| CN106181207A (en)* | 2016-08-29 | 2016-12-07 | 中国水利水电第三工程局有限公司 | A kind of penstock assembly device |
| CN106181207B (en)* | 2016-08-29 | 2018-06-08 | 中国水利水电第三工程局有限公司 | A kind of assembled device of big section of penstock |
| CN106975888A (en)* | 2017-04-25 | 2017-07-25 | 无锡市明骥智能机械有限公司 | The Self-debugging turning rolls for automatically adjusting machine people regulation and control is installed |
| CN107199435B (en)* | 2017-06-28 | 2019-04-26 | 中车长江车辆有限公司 | A kind of novel barrel pairing device and its assembly method |
| CN107199435A (en)* | 2017-06-28 | 2017-09-26 | 中车长江车辆有限公司 | A kind of novel barrel group is to device and its assembly method |
| CN108544172A (en)* | 2018-04-24 | 2018-09-18 | 马鞍山市中天机械制造安装有限公司 | A kind of wear-resisting fagging welding turntable of water slag groove |
| CN109623256A (en)* | 2019-01-09 | 2019-04-16 | 中国冶集团有限公司 | Large-diameter Steel pipeline butt welding installation method |
| CN110508990A (en)* | 2019-07-30 | 2019-11-29 | 中海油能源发展股份有限公司 | A Displacement Device for Butt Joint Length of Water Riser Casing Set |
| CN110542534A (en)* | 2019-09-16 | 2019-12-06 | 中国空气动力研究与发展中心超高速空气动力研究所 | wind tunnel pipe section connecting device and connecting method |
| CN110542534B (en)* | 2019-09-16 | 2021-04-16 | 中国空气动力研究与发展中心超高速空气动力研究所 | Wind tunnel pipe section connecting device and connecting method |
| CN110877181A (en)* | 2019-11-20 | 2020-03-13 | 华陆工程科技有限责任公司 | Assembling method on saddle of large-scale tower equipment |
| CN112122874A (en)* | 2020-10-26 | 2020-12-25 | 冯白茹 | A rotating roller, rotating device and rotating system for rotating heavy pipe body |
| CN112756901A (en)* | 2021-01-15 | 2021-05-07 | 江苏普达迪泰精密机电装备科技有限公司 | Tank body butt joint system |
| CN112809308A (en)* | 2021-02-22 | 2021-05-18 | 中国水利水电第四工程局有限公司 | In-hole pressure steel pipe pile section automatic weld auxiliary device |
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