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 tower Download PDF

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Publication number
CN101885129A
CN101885129A CN 201010219397 CN201010219397A CN101885129A CN 101885129 A CN101885129 A CN 101885129A CN 201010219397 CN201010219397 CN 201010219397 CN 201010219397 A CN201010219397 A CN 201010219397A CN 101885129 A CN101885129 A CN 101885129A
Authority
CN
China
Prior art keywords
tower
shell ring
power generation
wind power
unit
Prior art date
Application number
CN 201010219397
Other languages
Chinese (zh)
Inventor
任吉华
刘志强
王海龙
袁媛
Original Assignee
潍坊五洲风电设备有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 潍坊五洲风电设备有限公司 filed Critical 潍坊五洲风电设备有限公司
Priority to CN 201010219397 priority Critical patent/CN101885129A/en
Publication of CN101885129A publication Critical patent/CN101885129A/en

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Abstract

The invention discloses a shell ring assembly device for the assembly of a tower body of a wind power generation iron tower, which belongs to the technical field of wind power generation iron tower machining equipment. The shell ring assembly device comprises at least two groups of assembly units which are arranged on horizontal rails in a sliding way, and two rotating wheels for bearing shell rings, wherein each assembly unit comprises a roller frame arranged on the horizontal rails; the roller frame is provided with a roller matched with the corresponding horizontal rails; the upper end face of the roller frame is provided with a sliding rail which is vertical to the extension direction of the horizontal rails; and the two rotating wheels are oppositely arranged on the corresponding sliding rails in the sliding way. The shell ring assembly device solves the technical problems, in the assembly of the tower body of the wind power generation iron tower, that the coaxiality of a plurality of groups of shell rings is difficult to regulate, that the labor intensity of operators is high and that the working efficiency is low, has a rational structure and is widely applied to the machining process of the wind power generation iron tower.

Description

The shell ring group that is used for the tower body of wind power generation iron tower assembling is to device

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 the turning rolls 2 that is installed on the described horizontal rail 1 to the unit, described turning rolls 2 is provided with the roller 3 that is complementary with described horizontal rail 1, described roller 3 is arranged at two sides of turning rolls 2 or the bottom surface of turning rolls 2, the upper surface of described turning rolls 2 is provided with slide rail 7, and described slide rail 7 is vertical with the bearing of trend of horizontal rail 1; Two runners 5 that are used for the support shell ring, described two runner 5 slide in opposition are installed on the described slide rail 7.

Described two runners 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 described slide rail 7, and described force application apparatus one end is articulated on the described turning rolls 2, and the other end is articulated on the described runner 5.Described force application apparatus is preferably hydraulic jack 8, and the tailstock of described hydraulic jack 8 is articulated on the described turning rolls, and the piston rod of described hydraulic jack is articulated on the described runner 5.

Described group to having at least one group of group that the roller 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 the roller 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 the runner 5 of unit is connected with the 3rd power set in the unit, described the 3rd power set are preferably the 3rd motor reducer 6, the three motor reducers 6 and drive runners and rotate, thereby drive shell ring self around center steering.

The surface of described runner 5 is coated with overcoat, and described overcoat is a rubber 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 two runners 5 are threadedly connected to respectively on the screw rod 11 that is driven by first power set, described screw rod 11 rotates and is installed on the described turning rolls 2, described screw rod 11 is consistent with the bearing of trend of described slide rail 7, and described screw rod 11 is provided with forward and reverse screw thread, and first power set are preferably first 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 two runners 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 to unit 12, second group to unit 13, the 3rd group to unit 14 and the 4th group to unit 15, wherein second group drives by power set unit 13 and the 3rd group roller 3 to unit 14, and second group also drives by power set unit 13 and the 3rd group of runner 5 to unit 14.With first segment the shell ring of the good circularity in school be placed on the 3rd group to unit 14 and the 4th group on the unit 15, then shell ring of another joint school good circularity is placed on first group to unit 12 and second group on the unit 13, adjust every group of group then to the distance between the runner on the unit 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 drive runner 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 the unit 14, runner 5 and shell ring are disengaged, utilize second group unit 13 moved to the 3rd group shell ring to unit 14, second group of this moment should be positioned as close to the 3rd group to unit 14 to unit 13, and then with the 3rd group of runner 5 contact shell rings to unit 14, break away from shell ring with second group of runner 5 to unit 13 this moment again, handling the 3rd group drags backward to unit 14, repeatable operation like this, with organize to good shell ring move to make fully the 3rd group to unit 14 and the 4th group to unit 15 supports, so that have another shell ring be placed on first group to unit 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.
CN 201010219397 2010-06-30 2010-06-30 Shell ring assembly device for assembly of tower body of wind power generation iron tower CN101885129A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010219397 CN101885129A (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 201010219397 CN101885129A (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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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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
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
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

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JPH0966394A (en) * 1995-08-30 1997-03-11 Nippon Steel Corp Field welding work device for steel pipe and welding work method
CN201275677Y (en) * 2008-10-15 2009-07-22 无锡汉神电气有限公司 Combined type roller frame structure
CN201304552Y (en) * 2008-07-31 2009-09-09 山东安得利斯风电技术装备有限公司 Wind-power tower horizontal assembling device
CN201343570Y (en) * 2007-10-16 2009-11-11 诺发系统有限公司 Temperature control spray header
GB2463882A (en) * 2008-09-25 2010-03-31 Univ Exeter Apparatus for the rotation of objects to allow inspection and/or treatment thereof
CN201792151U (en) * 2010-06-30 2011-04-13 潍坊五洲风电设备有限公司 Cylindrical section assembly device of tower body of wind power generation iron tower

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JPH0966394A (en) * 1995-08-30 1997-03-11 Nippon Steel Corp Field welding work device for steel pipe and welding work method
CN201343570Y (en) * 2007-10-16 2009-11-11 诺发系统有限公司 Temperature control spray header
CN201304552Y (en) * 2008-07-31 2009-09-09 山东安得利斯风电技术装备有限公司 Wind-power tower horizontal assembling device
GB2463882A (en) * 2008-09-25 2010-03-31 Univ Exeter Apparatus for the rotation of objects to allow inspection and/or treatment thereof
CN201275677Y (en) * 2008-10-15 2009-07-22 无锡汉神电气有限公司 Combined type roller frame structure
CN201792151U (en) * 2010-06-30 2011-04-13 潍坊五洲风电设备有限公司 Cylindrical section assembly device of tower body of wind power generation iron tower

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102485403B (en) * 2010-12-03 2014-05-14 中国有色(沈阳)冶金机械有限公司 Cylinder welding frame body device
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
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
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
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
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
CN105945506A (en) * 2016-07-19 2016-09-21 天顺风能(苏州)股份有限公司 Self-adjusting roller carrier
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
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
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
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
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
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
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
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

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Application publication date: 20101117