CN111550072A - Carbon fiber cloth tensioning device with controllable tensioning - Google Patents
Carbon fiber cloth tensioning device with controllable tensioning Download PDFInfo
- Publication number
- CN111550072A CN111550072A CN202010422599.3A CN202010422599A CN111550072A CN 111550072 A CN111550072 A CN 111550072A CN 202010422599 A CN202010422599 A CN 202010422599A CN 111550072 A CN111550072 A CN 111550072A
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- carbon fiber
- tensioning
- frame body
- fixedly connected
- fiber cloth
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- 239000004744 fabric Substances 0.000 title claims abstract description 53
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 47
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 47
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 230000002787 reinforcement Effects 0.000 claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Woven Fabrics (AREA)
Abstract
The invention provides a carbon fiber cloth tensioning device with controllable tensioning, which belongs to the technical field of carbon fiber cloth tensioning devices and comprises a fixing frame body, a guide rod, an adjusting piece, a guide shaft, a support rod and a chain wheel moving device, wherein the chain wheel moving device is connected to the guide rod through the support rod, the guide shaft is movably connected to the guide rod through the adjusting piece, and the guide rod is rotatably connected to the fixing frame body. This controllable carbon cloth tensioning equipment of stretch-draw utilizes the angle that forms different between the guide bar and to the regulation of guiding axle, makes tensioning equipment not only be suitable for the reinforcement of horizontal structure, can also be suitable for the structure of different angle shapes, compares with current tensioning equipment, and application scope is wider, and device utilization has had very big improvement, and in the in-process that uses moreover, can let carbon fiber cloth bigger degree and certain shape structure agree with relatively paste together, full play carbon fiber cloth's high strength characteristics reach better reinforcement effect.
Description
Technical Field
The invention relates to the technical field of carbon fiber cloth tensioning devices, in particular to a carbon fiber cloth tensioning device with controllable tensioning.
Background
The carbon fiber cloth is widely used for reinforcement repair and earthquake resistance of various structures in the building industry due to the advantages of high strength, small density, thin thickness, light dead weight and the like, wherein the carbon fiber cloth is mainly divided into prestress and non-prestress, the non-prestress reinforcement mainly comprises the step of adhering the carbon fiber cloth to a structure needing to be reinforced through a bonding system, the prestress reinforcement is realized on the non-prestress basis by utilizing a tensioning device to apply certain prestress to the carbon fiber cloth, the reinforcement purpose of the structure is achieved through anchoring and adhering processes, compared with the non-prestress reinforcement, the high-strength characteristic of the carbon fiber cloth can be fully exerted through the prestress reinforcement, the firmness of the structure is greatly increased, and the bending resistance of the carbon fiber cloth is improved.
However, the existing tensioning devices are generally not adjustable, are only suitable for horizontal structure reinforcement, are not suitable for structures in a certain angle shape, and cause the tensioning devices to have narrow application range and low utilization rate, or in the using process, the carbon fiber cloth cannot be fixed in the structures needing reinforcement in a relatively fitting manner, so that the high-strength characteristic of the carbon fiber cloth cannot be fully exerted, and the reinforcement effect is influenced.
Disclosure of Invention
In order to solve the technical problems, the invention provides a carbon fiber cloth tensioning device with controllable tensioning, which is achieved by the following specific technical means:
a carbon fiber cloth tensioning device with controllable tensioning comprises a fixing frame body, wherein a fixing seat is connected to the middle position of the fixing frame body, axial grooves are formed in the upper end position and the lower end position of the fixing seat in the fixing frame body, a forward inner ratchet wheel is arranged at the middle position in the axial grooves, a forward inner ratchet wheel is sleeved on the fixing seat, a corresponding forward outer ratchet wheel is sleeved on the forward inner ratchet wheel, a linear connecting piece is fixedly connected onto the forward outer ratchet wheel, corresponding reverse inner ratchet wheels are arranged on the upper side and the lower side of the forward inner ratchet wheel, reverse outer ratchet wheels are sleeved on the reverse inner ratchet wheels, a U-shaped connecting piece is fixedly connected between the reverse outer ratchet wheels, limiting blocks are fixedly arranged on the forward inner ratchet wheel and the reverse inner ratchet wheel, limiting grooves corresponding to the limiting blocks are formed in the fixing seat, limiting switch pieces are arranged on the limiting grooves, connecting rods are fixedly connected between the group of guide rods positioned on the linear connecting piece and the group of guide rods positioned on the U-shaped connecting piece, track grooves are formed in one side of each of the upper guide rod and the lower guide rod, adjusting parts are movably connected in the track grooves, a guide shaft is fixedly connected between the upper adjusting part and the lower adjusting part, a rotating shaft is fixedly arranged at the middle position of one side of each of the upper guide rod and the lower guide rod, a rotating support rod is rotatably connected to the rotating shaft, a fixed shaft is rotatably connected to the other end of the rotating support rod, a reinforcing part is fixedly connected to the fixed shaft, a chain wheel moving device is fixedly connected to a fixing frame body, carbon fiber cloth locking devices are movably installed on the left side and the right side of the fixing frame body, wherein, the carbon fiber cloth locking device on any side is fixedly connected with a connecting device which is connected with a measuring device and a tension driving device.
Preferably, the upper surfaces of the guide rod and the fixing seat are on the same horizontal plane, so that the carbon fiber cloth and the horizontal structure can be combined to the greatest extent when the horizontal structure is reinforced.
Preferably, the fixing frame body is provided with a carbon fiber cloth limiting and adjusting device.
Preferably, the fixing frame body is connected in a foldable mode along the radial direction of the fixing seat, occupied space of the tensioning device in an out-of-operation state is reduced, and meanwhile transportation and carrying are facilitated.
Preferably, the sprocket moving device 22 includes a sprocket track 221, a sprocket body 222, a rotating gear 223, a driven gear 224, a mounting shaft 225 and a driving gear 226, the sprocket track 221 is mounted in the fixing frame body 1, the sprocket body 222 is movably mounted in the sprocket track 221 and rotatably connected to the driven gear 224 through the rotating gear 223, the back surface of the sprocket body 222 is fixedly connected to the reinforcement member 21, the mounting shaft 255 sequentially passes through the driven gear 224 and the rotating gear 223 to be fixedly connected to the fixing frame body 1, and the driving gear 226 is fixedly disposed in the fixing frame body 1 at a position corresponding to the driven gear 224.
The invention has the following beneficial effects:
1. this controllable carbon cloth tensioning equipment of stretch-draw, utilize sprocket mobile device to drive the guide bar rebound through rotating the bracing piece, form different angles between the guide bar, make tensioning equipment not only be suitable for the reinforcement of horizontal structure, can also be suitable for the structure of different angle shapes, compare with the tensioning equipment that current can not adjust only be suitable for horizontal structure or can slightly adjust, application scope relative ratio is wider, the device utilization ratio is relatively higher, and in the process of using, can let carbon cloth maximum and certain shape structure more agree with paste together, full play carbon cloth's high strength characteristic, reach relatively better reinforcing effect.
2. This controllable carbon cloth tensioning equipment of stretch-draw through the regulation and control to the guiding axle, has further increased the scope that forms the angle shape between the guide bar, makes tensioning equipment be suitable for the structure of wider scope angle shape, and application scope is wider, and device utilization rate is higher, more can let carbon cloth the at utmost with certain shape structure more agree with paste together, the high strength characteristics of full play carbon cloth more reach better reinforcing effect.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
FIG. 2 is a schematic view of the combination of the forward inner ratchet, the forward outer ratchet and the linear connecting rod of the present invention.
FIG. 3 is a schematic view of the combination of the reverse inner ratchet, the reverse outer ratchet and the U-shaped connecting member according to the present invention.
Fig. 4 is a schematic view of a combination structure of a guide bar, a track groove, an adjusting member and a guide shaft according to the present invention.
FIG. 5 is an enlarged view of A of FIG. 1 according to the present invention.
FIG. 6 is a structural view of the sprocket moving device of the present invention.
Fig. 7 is a top cross-sectional view of the sprocket shifting apparatus of the present invention.
In the figure: 1. a fixed frame body; 2. a fixed seat; 3. an axial groove; 4. a forward inner ratchet; 5. a forward outer ratchet; 6. a linear connector; 7. a reverse inner ratchet wheel; 8. a reverse outer ratchet wheel; 9. a U-shaped connecting piece; 10. a limiting block; 11. a limiting groove; 12. a limit switch; 13. a guide bar; 14. a connecting rod; 15. a track groove; 16. an adjustment member; 17. a guide shaft; 18. a rotating shaft; 19. rotating the support rod; 20. a fixed shaft; 21. a reinforcement; 22. a sprocket moving device; 221. a sprocket track; 222. a sprocket body; 223. a rotating gear; 224. a driven gear; 225. installing a shaft; 226. a drive gear; 23. a carbon fiber cloth locking device; 24. a connecting device; 25. a measuring device; 26. a tension driving device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-7, a carbon fiber cloth tensioning device with controllable tensioning comprises a fixing frame body 1, a carbon fiber cloth limiting and adjusting device is arranged on the fixing frame body 1, the fixing frame body 1 is connected in a foldable manner along the radial direction of a fixing seat 2, the occupied space of the tensioning device in an inoperative state is reduced, and the carbon fiber cloth tensioning device is convenient to transport and carry, the fixing seat 2 is connected to the middle position of the fixing frame body 1, axial grooves 3 are respectively formed in the upper end and the lower end of the fixing seat 2 in the fixing frame body 1, a forward inner ratchet 4 is arranged in the middle position in the axial groove 3, the forward inner ratchet 4 is sleeved on the fixing seat 2, a corresponding forward outer ratchet 5 is sleeved on the forward inner ratchet 4, a linear connecting piece 6 is fixedly connected to the forward outer ratchet 5, corresponding reverse inner ratchets 7 are arranged on the upper side and the lower side of the forward inner ratchet, a U-shaped connecting piece 9 is fixedly connected between the reverse outer ratchet wheels 8, limiting blocks 10 are fixedly arranged on the forward inner ratchet wheel 4 and the reverse inner ratchet wheel 7, a limiting groove 11 corresponding to the limiting block 10 is arranged on the fixed seat 2, a limiting switch piece 12 is arranged on the limiting groove 11, guide rods 13 are fixedly connected on the linear connecting piece 6 and the U-shaped connecting piece 9, a connecting rod 14 is fixedly connected between a group of guide rods 13 on the linear connecting piece 6 and a group of guide rods 13 on the U-shaped connecting piece 9, track grooves 15 are arranged on the opposite sides of the upper guide rod 13 and the lower guide rod 13, the upper surfaces of the guide rods 13 and the fixed seat 2 are on the same horizontal plane, the carbon fiber cloth and the horizontal structure can be matched with each other to the maximum extent when the horizontal structure is reinforced, an adjusting piece 16 is movably connected in the track groove 15, and a guide shaft 17 is fixedly connected between the upper, a rotating shaft 18 is fixedly arranged at the middle position of one side of the upper and lower guide rods 13 opposite to each other, a rotating support rod 19 is rotatably connected to the rotating shaft 18, a fixed shaft 20 is rotatably connected to the other end of the rotating support rod 19, a reinforcing member 21 is fixedly connected to the fixed shaft 20, a sprocket moving device 22 is fixedly connected to the reinforcing member 21, the sprocket moving device 22 is fixedly connected to the fixing frame body 1, preferably, the sprocket moving device 22 comprises a sprocket track 221, a sprocket body 222, a rotating gear 223, a driven gear 224, a mounting shaft 225 and a driving gear 226, the sprocket track 221 is mounted in the fixing frame body 1, the sprocket body 222 is movably mounted in the sprocket track 221 and rotatably connected to the driven gear 224 through the rotating gear 223, the back of the sprocket body 222 is fixedly connected to the reinforcing member 21, and the mounting shaft 225 sequentially passes through the driven, the driving gear 226 is fixedly arranged in the position corresponding to the driven gear 224 in the fixing frame body 1, the carbon fiber cloth locking devices 23 are movably arranged on the left side and the right side of the fixing frame body 1, the connecting device 24 is fixedly connected on the carbon fiber cloth locking device 23 on any side, and the measuring device 25 and the tension driving device 26 are connected on the connecting device 24.
The working principle is as follows: the carbon fiber cloth tensioning device with controllable tensioning can be used for reinforcing a horizontal structure by only fixing the carbon fiber cloth on the carbon fiber cloth locking device 23 along the corresponding fixing frame body 1 and the corresponding connecting rod 14, then pulling the carbon fiber cloth locking device 23 through the tension driving device 26 to apply prestress on the carbon fiber cloth, measuring the applied prestress through the measuring device 25, fixedly fitting the carbon fiber cloth on a horizontal mechanism to be reinforced after a measured value is reached, and fixing the carbon fiber cloth on the horizontal reinforcement to the maximum extent because the upper surfaces of the fixing frame body 1 and the connecting rod 14 of the fixing seat 2 are on the same horizontal plane, and when reinforcing the structure with a certain angle shape, firstly fixing one end of the carbon fiber cloth on one of the carbon fiber cloth locking devices 23, the other end of the fixing frame is fixed on another carbon fiber cloth locking device 23 along the corresponding fixing frame body 1 and the corresponding connecting rod 14 through the gap between the guide shaft 17 and the guide rod 13 bracket, according to the shape of the structure to be reinforced, the chain wheel moving device 22 drives the rotary supporting rod 19 to move along the horizontal direction, the rotary supporting rod 19 drives the guide rods 13 to move upwards, a certain angle is formed between the guide rods 13, then the adjusting piece 16 is adjusted to drive the guide shaft 17 to move along the guide rods 13, the carbon fiber cloth is controlled to form an angle shape matched with a required reinforcing structure through the moving position of the guide shaft 17, so that the carbon fiber cloth is matched and fixed with a mechanism required to be reinforced to the maximum extent, the high-strength characteristic of the carbon fiber cloth is exerted to the maximum extent, the reinforcing effect is ensured, and the tensioning device is wide in application range and high in utilization rate.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a controllable carbon cloth tensioning equipment of stretch-draw, includes mount body (1), its characterized in that: the middle position of the fixing frame body (1) is connected with a fixing seat (2), the fixing seat (2) is positioned at the upper end and the lower end in the fixing frame body (1) and is provided with axial grooves (3), the middle position in the axial grooves (3) is provided with a forward inner ratchet wheel (4), the forward inner ratchet wheel (4) is sleeved on the fixing seat (2), the forward inner ratchet wheel (4) is sleeved with a corresponding forward outer ratchet wheel (5), the forward outer ratchet wheel (5) is fixedly connected with a linear connecting piece (6), the upper side and the lower side of the forward inner ratchet wheel (4) are provided with corresponding reverse inner ratchet wheels (7), the reverse inner ratchet wheels (7) are sleeved with reverse outer ratchet wheels (8), a U-shaped connecting piece (9) is fixedly connected between the reverse outer ratchet wheels (8), the forward inner ratchet wheel (4) and the reverse inner ratchet wheels (7) are fixedly provided with limiting blocks (10), the fixing seat (2) is provided with limiting grooves (11) corresponding to, a limit switch part (12) is arranged on the limit groove (11), guide rods (13) are fixedly connected on the linear connecting part (6) and the U-shaped connecting part (9), connecting rods (14) are fixedly connected between a group of guide rods (13) positioned on the linear connecting part (6) and a group of guide rods (13) positioned on the U-shaped connecting part (9), track grooves (15) are arranged on one sides of the upper guide rod and the lower guide rod (13) which are opposite to each other, an adjusting part (16) is movably connected in the track grooves (15), a guide shaft (17) is fixedly connected between the upper adjusting part and the lower adjusting part (16), a rotating shaft (18) is fixedly arranged at the middle position of one side of the upper guide rod and the lower guide rod (13) which are opposite to each other, a rotating support rod (19) is rotatably connected on the rotating shaft (18), a fixed shaft (20) is rotatably connected at the, on fixedly connected with sprocket mobile device (22) on reinforcement (21), sprocket mobile device (22) fixed connection is on mount body (1), and the equal movable mounting in both sides has carbon cloth locking device (23) about mount body (1), and wherein fixedly connected with connecting device (24) is gone up in carbon cloth locking device (23) on arbitrary one side, is connected with measuring device (25) and pulling force drive arrangement (26) on connecting device (24).
2. A carbon fiber sheet tensioning device with controllable tensioning according to claim 1, wherein: the upper surfaces of the guide rod (13) and the fixed seat (2) are on the same horizontal plane.
3. A carbon fiber sheet tensioning device with controllable tensioning according to claim 1, wherein: the fixing frame body (1) is provided with a carbon fiber cloth limiting and adjusting device.
4. A carbon fiber sheet tensioning device with controllable tensioning according to claim 1, wherein: the fixing frame body (1) is connected in a foldable mode along the radial direction of the fixing seat (2).
5. A carbon fiber sheet tensioning device with controllable tensioning according to claim 1, wherein: the chain wheel moving device (22) comprises a chain wheel track (221), a chain wheel body (222), a rotating gear (223), a driven gear (224), an installation shaft (225) and a driving gear (226), wherein the chain wheel track (221) is installed in the fixed frame body (1), the chain wheel body (222) is movably installed in the chain wheel track (221) and is rotatably connected to the driven gear (224) through the rotating gear (223), the back face of the chain wheel body (222) is fixedly connected to the reinforcing member (21), the installation shaft (225) sequentially penetrates through the driven gear (224) and the rotating gear (223) and is fixedly connected to the fixed frame body (1), and the driving gear (226) is fixedly arranged in the fixed frame body (1) and corresponds to the driven gear (224).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010422599.3A CN111550072A (en) | 2020-05-19 | 2020-05-19 | Carbon fiber cloth tensioning device with controllable tensioning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010422599.3A CN111550072A (en) | 2020-05-19 | 2020-05-19 | Carbon fiber cloth tensioning device with controllable tensioning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111550072A true CN111550072A (en) | 2020-08-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010422599.3A Withdrawn CN111550072A (en) | 2020-05-19 | 2020-05-19 | Carbon fiber cloth tensioning device with controllable tensioning |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111550072A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115584869A (en) * | 2022-10-09 | 2023-01-10 | 德才装饰股份有限公司 | Reinforcing and fixing device for wooden beam of historic building |
| CN115874841A (en) * | 2022-12-08 | 2023-03-31 | 水利部交通运输部国家能源局南京水利科学研究院 | Uniform reinforcement device and method for prestressed FRP cloth |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11182061A (en) * | 1997-12-24 | 1999-07-06 | Chishin Go | Reinforcement method and structure of concrete member by fiber tension |
| CN202990437U (en) * | 2012-11-27 | 2013-06-12 | 山东大学 | Strengthening device for prestressed CFRP (Carbon Fiber Reinforced Plastics) sheet |
| US20130220729A1 (en) * | 2012-02-27 | 2013-08-29 | California Institute Of Technology | Method and apparatus for wave generation and detection using tensegrity structures |
| CN107012800A (en) * | 2017-03-23 | 2017-08-04 | 河海大学 | The tensioning equipment of adjustable carbon cloth tensioning angle |
| CN107247395A (en) * | 2017-06-20 | 2017-10-13 | 北京中恒复印设备集团有限公司 | Stop bit transmission mechanism and carbon starch cylinder |
| CN109027579A (en) * | 2018-08-24 | 2018-12-18 | 歌尔科技有限公司 | A kind of angle adjusting mechanism and angle adjustment device |
| CN208950328U (en) * | 2018-08-16 | 2019-06-07 | 贵州桥梁建设集团有限责任公司 | A kind of high efficient prestress tensioning equipment |
-
2020
- 2020-05-19 CN CN202010422599.3A patent/CN111550072A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11182061A (en) * | 1997-12-24 | 1999-07-06 | Chishin Go | Reinforcement method and structure of concrete member by fiber tension |
| US20130220729A1 (en) * | 2012-02-27 | 2013-08-29 | California Institute Of Technology | Method and apparatus for wave generation and detection using tensegrity structures |
| CN202990437U (en) * | 2012-11-27 | 2013-06-12 | 山东大学 | Strengthening device for prestressed CFRP (Carbon Fiber Reinforced Plastics) sheet |
| CN107012800A (en) * | 2017-03-23 | 2017-08-04 | 河海大学 | The tensioning equipment of adjustable carbon cloth tensioning angle |
| CN107247395A (en) * | 2017-06-20 | 2017-10-13 | 北京中恒复印设备集团有限公司 | Stop bit transmission mechanism and carbon starch cylinder |
| CN208950328U (en) * | 2018-08-16 | 2019-06-07 | 贵州桥梁建设集团有限责任公司 | A kind of high efficient prestress tensioning equipment |
| CN109027579A (en) * | 2018-08-24 | 2018-12-18 | 歌尔科技有限公司 | A kind of angle adjusting mechanism and angle adjustment device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115584869A (en) * | 2022-10-09 | 2023-01-10 | 德才装饰股份有限公司 | Reinforcing and fixing device for wooden beam of historic building |
| CN115874841A (en) * | 2022-12-08 | 2023-03-31 | 水利部交通运输部国家能源局南京水利科学研究院 | Uniform reinforcement device and method for prestressed FRP cloth |
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Application publication date: 20200818 |
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