CN112643268A - Bridge welding device and using method thereof - Google Patents
Bridge welding device and using method thereof Download PDFInfo
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- CN112643268A CN112643268A CN202011440632.1A CN202011440632A CN112643268A CN 112643268 A CN112643268 A CN 112643268A CN 202011440632 A CN202011440632 A CN 202011440632A CN 112643268 A CN112643268 A CN 112643268A
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- fixedly connected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention relates to the technical field of bridge welding. In particular to a bridge welding device and a using method thereof. The invention aims to solve the technical problems that the process of fixing a bridge support by a welding device is complex, the installation of a positioning device is complex, the stability of the structure is poor, and the welding device cannot effectively cool the bridge support in welding. In order to solve the technical problems, the invention provides a bridge welding device and a use method thereof, wherein the bridge welding device is used by matching parts such as a clamping mechanism, a transmission mechanism, an arc-shaped water tank and the like, one end of an air cylinder pushes a first transverse plate and a second transverse plate to move so as to clamp the periphery of a bridge support, two connecting rods move to push two first clamping plates to clamp and position the support, the positioning of a plurality of positioning blocks is avoided, the welding preparation time is shortened, the support at the top of a bottom plate is cooled through the circulating flow of water flow in the arc-shaped tank, the damage of a polytetrafluoroethylene plate in the support is avoided, and meanwhile, the scalding of operators when taking the bridge welding device is avoided.
Description
Technical Field
The invention relates to the technical field of bridge welding, in particular to a bridge welding device and a using method thereof.
Background
The bridge bearing is an important component of a beam-type or plate-type bridge structure, and is a force transmission device arranged at the supporting position of a bridge span structure and a pier or an abutment, when a fixture tool of the bridge bearing is used, positioning and clamping of a part is completed once, more than 30 positioning and clamping actions are required, and when a part is disassembled through spot welding, the same number of actions are required to loosen each pressing point, so that the device convenient for positioning and clamping is required to install the bridge bearing;
the prior patent (publication number: CN108817813A) discloses a beam support welding tool, which comprises a positioning block component and a top pressing component, wherein the positioning block component is used for covering four corners of the bridge support to be pressed and positioned. The inventor finds that the following problems in the prior art are not solved in the process of realizing the scheme: 1. the device needs to pull a plurality of magnetic base handles to compress the bridge support in the process of compressing the bridge support, and is complex to use; 2. when the device needs to position a bridge support, four positioning block assemblies need to be adsorbed on the support through the magnet blocks for positioning, and the device is complex to operate and poor in stability; 3. the device's locating piece uses the nylon materials, it is effectual not to cool down the processing to the support in bridge beam supports welding process, reduce locating piece life by a wide margin, the high temperature can cause the damage to rubber slab and polytetrafluoroethylene board in the support among the bridge beam supports welding process simultaneously, CN201258456Y among other bridge beam welding set of current in addition, need utilize a plurality of drive arrangement to realize bridge beam supports's synchronous clamp tight among the CN111395196A, consequently, requirement to each lateral part clamping mechanism's of bridge beam supports synchronism requirement and all drive arrangement reliabilities is higher.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a bridge welding device and a use method thereof, which solve the problems that the operation of the existing part of bridge support welding devices is complex in the process of pressing a support, the existing part of bridge support welding devices is complex in positioning structure installation and low in stability, and the existing part of bridge support welding devices do not effectively cool the support in the welding process.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a bridge welding device comprises a bottom plate, wherein a clamping mechanism is movably connected to the middle of the top surface of the bottom plate, a transmission mechanism matched with the clamping mechanism is movably connected to the top of the bottom plate, a sealing plate is fixedly connected to the bottom of the bottom plate, arc-shaped water grooves are formed in the sides, opposite to the bottom plate, of the sealing plate, and one end of each two adjacent arc-shaped water grooves is fixedly connected with a water pipe joint;
the bottom fixedly connected with cooler bin of closing plate, the interior bottom overlap joint of cooler bin has the water tank, the top and the equal fixedly connected with hose of lateral wall of water tank, two the one end of hose respectively with two water pipe head fixed connection.
Preferably, the clamping mechanism comprises four L-shaped base plates, the four L-shaped base plates are symmetrically and fixedly connected to the top of the base plate, a first clamping plate is movably inserted between the two transverse L-shaped base plates, a sliding groove is formed in the bottom of the first clamping plate, a sliding block matched with the sliding groove is fixedly connected to the top of the base plate, and a connecting rod is hinged to one side, opposite to each other, of the two first clamping plates;
and a second clamp plate is movably connected between the two vertical L-shaped base plates.
Preferably, the two check blocks are symmetrically and fixedly connected to the right side of the top of the bottom plate, and the two check blocks are fixedly connected to the adjacent L-shaped base plates respectively on the opposite sides.
Preferably, the transmission mechanism comprises an air cylinder, the bottom of the air cylinder is movably connected to the top of the bottom plate, a transverse plate I is fixedly connected to the right side of the air cylinder, and one end of the air cylinder penetrates through the transverse plate I and is fixedly connected with the left side of the clamping mechanism;
the upper portion and the lower portion on the right side of the first transverse plate are fixedly connected with moving rods, the middle portion of each moving rod is movably sleeved with two supporting blocks, one side of each supporting block is fixedly connected with an adjacent clamping mechanism, two transverse plates are fixedly connected with one ends of the moving rods, the left sides of the two transverse plates are lapped on the right sides of the clamping mechanisms, connecting blocks are fixedly connected to the middle portions of the two transverse plates, and the connecting blocks are fixedly connected with the right sides of the clamping mechanisms.
Further preferably, a movable groove is formed in the left side of the top of the bottom plate, a movable block is movably connected inside the movable groove, the top of the movable block is fixedly connected with the bottom of the air cylinder, and a compression spring is fixedly connected between the left side of the movable block and the inner wall of the movable groove.
Preferably, the middle part of the moving rod is fixedly sleeved with a fixed sleeve, and the fixed sleeve is hinged with the middle part of the clamping mechanism.
Further preferably, the inner bottom surface of the cooling box is fixedly connected with a water pump, and the water pump is fixedly connected with the adjacent flexible water pipes.
A using method of a bridge welding device comprises the following steps:
s1, firstly, the bridge support is placed between the first clamping plate and the second clamping plate, so that the right side of the bridge support is pressed on the two stop blocks fixedly connected with the top of the bottom plate for limiting.
S2, starting the cylinder, enabling one end of the cylinder to drive the fixedly connected second clamp plate to abut against the bridge support, and enabling the cylinder to move to the left side of the bottom plate under the condition of reaction force because the support abutted against by the second clamp plate is blocked by the stop block and cannot drive the bridge support to move.
S3, at the moment, the first transverse plate is driven to move to the left side of the bottom plate along with the movement of the air cylinder, the first transverse plate drives the second transverse plate to move to the left side of the bottom plate through the moving rod, and then the connecting block fixedly connected to the middle of the second transverse plate drives the second clamping plate on the right side to clamp two sides of the bridge support.
S4, the two moving rods can drive the middle hinged connecting rods to move along with the moving process of the first transverse plate, so that the two connecting rods can push the first clamping plates hinged respectively to move relatively, the front end and the rear end of the bridge support are clamped, and the bridge support is completely limited and fixed on the bottom plate.
S5, finally, the water pump is started, so that the cooling liquid in the water tank cools the welded support at the top of the bottom plate through the arc-shaped water tank, and the overhigh temperature in the welding process of the bridge support is avoided.
(III) advantageous effects
The invention provides a bridge welding device and a using method thereof, and the bridge welding device has the following beneficial effects:
(1) the invention can realize the efficient, reliable and synchronous clamping and fixing of the bridge support only by using a single driving device and utilizing the hinged mechanical transmission structure to be matched with the smart transmission of the air cylinder.
(2) The device uses through the cooperation of parts such as cylinder, a diaphragm and No. two diaphragms, and when cylinder one end promoted No. two splint of fixed connection, drive a diaphragm and move with No. two diaphragms and press from both sides tightly bridge support's all around, easy operation is convenient, and the practicality is strong.
(3) The device uses through the cooperation of parts such as splint, No. two splint and connecting rod, when a diaphragm drives the carriage release lever and removes, makes two connecting rod remove and is pushing away two splint of No. one and press from both sides tight location to the support, when needs press from both sides tightly not unidimensional support, avoids using a plurality of locating pieces location, reduces the welding preparation time, improves work efficiency.
(4) The device uses through the cooperation of parts such as arc basin, water tank and hose, makes the inside rivers circulation flow of arc wall cool down the support at bottom plate top, avoids the support surface high temperature in welding process, leads to inside rubber slab and the damage of polytetrafluoroethylene board of support, scalds when avoiding the operation personnel to take simultaneously, promotes the security performance.
Drawings
FIG. 1 is a sectional top view of the overall structure of the present invention;
FIG. 2 is a front cross-sectional view of the position of the base plate and cooling box of the present invention;
FIG. 3 is a bottom view of the position of the base plate of the present invention.
In the figure: 1, a bottom plate; 2, a clamping mechanism; a 201L-shaped backing plate; 202 a clamp plate; 203 chute; 204 sliding blocks; 205 a connecting rod; 206 clamp plate II; 207 a stop block; 3, a transmission mechanism; 301 air cylinder; a first transverse plate 302; 303 moving the rod; 304 a support block; 305 a second transverse plate; 306 connecting blocks; 4, sealing a plate; 5, an arc-shaped water tank; 6, connecting a water pipe; 7, a cooling box; 8, a water tank; 9 soft water pipe.
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. 1-3, the present invention provides a technical solution: the utility model provides a bridge welding set, includes bottom plate 1, and the middle part swing joint of 1 top surface of bottom plate has fixture 2, and the top swing joint of bottom plate 1 has drive mechanism 3 with fixture 2 matched with, and bottom fixedly connected with closing plate 4 of bottom plate 1, closing plate 4 have all seted up arc basin 5 with the relative one side of bottom plate 1, and the equal fixedly connected with water pipe head 6 of one end of two adjacent arc basins 5. It should be noted that the two arc-shaped water tanks 5 cooperate with each other to form an S-shaped cooling channel.
The bottom fixedly connected with cooler bin 7 of closing plate 4, the interior bottom overlap joint of cooler bin 7 has water tank 8, the equal fixedly connected with hose 9 of top and the lateral wall of water tank 8, the one end of two hose 9 respectively with two water pipe head 6 fixed connection. It should be noted that, the water tank 8 is provided with a tubular cooler, so that the hot water flowing out of the arc-shaped water tank 5 can be cooled and recycled.
According to the invention, the clamping mechanism 2 comprises four L-shaped base plates 201, the four L-shaped base plates 201 are symmetrically and fixedly connected to the top of the base plate 1, a first clamping plate 202 is movably inserted between the two horizontal L-shaped base plates 201, a sliding groove 203 is formed in the bottom of the first clamping plate 202, a sliding block 204 matched with the sliding groove 203 is fixedly connected to the top of the base plate 1, connecting rods 205 are hinged to the opposite sides of the two first clamping plates 202, and a second clamping plate 206 is movably connected between the two vertical L-shaped base plates 201. It should be noted that the two first clamping plates 202 and the two second clamping plates 206 can move between the four L-shaped base plates 201 to tighten and position the bridge support, thereby avoiding positioning in a manner of complicated operation and poor stability, such as splicing or magnet adsorption.
In the invention, two stoppers 207 are symmetrically and fixedly connected to the right side of the top of the bottom plate 1, and the opposite sides of the two stoppers 207 are respectively and fixedly connected with the adjacent L-shaped base plates 201.
According to the invention, the transmission mechanism 3 comprises an air cylinder 301, the bottom of the air cylinder 301 is movably connected to the top of the bottom plate 1, a first transverse plate 302 is fixedly connected to the right side of the air cylinder 301, one end of the air cylinder 301 penetrates through the first transverse plate and is fixedly connected with the left side of the clamping mechanism 2, the upper portion and the lower portion of the right side of the first transverse plate 302 are fixedly connected with a moving rod 303, two supporting blocks 304 are movably sleeved in the middle of the moving rod 303, one side of each supporting block 304 is fixedly connected with the adjacent clamping mechanism 2, one end of each moving rod 303 is fixedly connected with a second transverse plate 305, the left side of the second transverse plate 305 is lapped on the right side of the clamping mechanism 2, a connecting block 306 is fixedly connected to the middle of the. It should be noted that one end of the cylinder 301 is fixedly connected to the second clamp plate 206 on the left side of the device, the side wall of the second clamp plate 206 on the right side of the device is fixedly connected to the left end of the connecting block 306, a circular hole is formed in the middle of the supporting block 304, the moving rod 303 penetrates through the circular hole and is slidably connected to the inside of the supporting block 304, meanwhile, one side of the supporting block 304 is fixedly connected to the side wall of the adjacent L-shaped base plate 201, and the left side of the second transverse plate 305 is lapped on the side walls of the two L.
In the invention, a movable groove is formed in the left side of the top of the bottom plate 1, a movable block is movably connected inside the movable groove, the top of the movable block is fixedly connected with the bottom of the air cylinder 301, and a compression spring is fixedly connected between the left side of the movable block and the inner wall of the movable groove. It should be noted that, when the cylinder 301 is closed, the compression spring can push the cylinder 301 to move toward the right side of the bottom plate 1, and the cylinder 301 drives the first transverse plate 302 and the second transverse plate 305 to move, so that the two second clamping plates 206 move away from each other, and the clamping of the bridge bearing is automatically released.
In the invention, the middle part of the moving rod 303 is fixedly sleeved with a fixed sleeve, and the fixed sleeve is hinged with the middle part of the clamping mechanism 2. It should be noted that, two fixing sleeves are respectively hinged to two adjacent connecting rods 205, and the distance between the fixing sleeve and the first transverse plate 302 is greater than the distance between the fixing sleeve and the second transverse plate 305, so that the moving rod 303 drives the fixing sleeve to move when moving, and at this time, the connecting rod 205 hinged to the fixing sleeve pushes the first clamping plate 202 to move, so that the two first clamping plates 202 move relatively to clamp and fix the front and rear ends of the bridge support.
In the invention, the inner bottom surface of the cooling box 7 is fixedly connected with a water pump, and the water pump is fixedly connected with the adjacent flexible water pipe 9. It should be noted that the water in the water tank 8 is pumped into the arc-shaped water tank 5 by the water pump to cool the bridge bearing clamped at the top of the bottom plate 1.
A using method of a bridge welding device comprises the following steps:
s1, first, the bridge support is placed between the first clamping plate 202 and the second clamping plate 206, so that the right side of the bridge support is pressed against the two stoppers 207 fixedly connected to the top of the bottom plate 1 for limiting.
S2, then starting the cylinder 301, so that one end of the cylinder 301 drives the fixedly connected second clamp plate 206 to abut against the bridge support, and the abutment pressed by the second clamp plate 206 is blocked by the block 207 and cannot drive the bridge support to move, so that the cylinder 301 moves to the left side of the bottom plate 1 under the condition of a reaction force.
S3, at the moment, the first transverse plate 302 is driven to move towards the left side of the bottom plate 1 along with the movement of the air cylinder 301, the first transverse plate 302 drives the second transverse plate 305 to move towards the left side of the bottom plate 1 through the moving rod 303, and then the connecting block 306 is fixedly connected to the middle of the second transverse plate 305 to drive the second clamping plate 206 on the right side to clamp the two sides of the bridge support.
S4, the two moving rods 303 drive the middle hinged connecting rods 205 to move in the moving process along with the first transverse plate 302, so that the two connecting rods 205 push the first clamping plates 202 which are respectively hinged to move relatively, the front end and the rear end of the bridge support are clamped, and the bridge support is completely limited and fixed on the bottom plate 1.
S5, finally, the water pump is started, so that the cooling liquid in the water tank 8 cools the support welded to the top of the bottom plate 1 through the arc-shaped water tank 5, and the overhigh temperature in the welding process of the bridge support is avoided.
Therefore, the invention can realize the efficient, reliable and synchronous clamping and fixing of the bridge support only by using the single driving device and the articulated mechanical transmission structure to be matched with the smart transmission of the air cylinder.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (3)
1. The utility model provides a bridge welding set, includes bottom plate (1), its characterized in that: the middle of the top surface of the bottom plate (1) is movably connected with a clamping mechanism (2), the top of the bottom plate (1) is movably connected with a transmission mechanism (3) matched with the clamping mechanism (2), the bottom of the bottom plate (1) is fixedly connected with a sealing plate (4), arc-shaped water grooves (5) are formed in one sides of the sealing plate (4) opposite to the bottom plate (1), and one ends of every two adjacent arc-shaped water grooves (5) are fixedly connected with a water pipe joint (6); the bottom of the sealing plate (4) is fixedly connected with a cooling box (7), the inner bottom surface of the cooling box (7) is lapped with a water tank (8), the top and the side wall of the water tank (8) are fixedly connected with flexible water pipes (9), and one ends of the two flexible water pipes (9) are respectively and fixedly connected with the two water pipe joints (6);
the clamping mechanism (2) comprises L-shaped base plates (201), the number of the L-shaped base plates (201) is four, the four L-shaped base plates (201) are symmetrically and fixedly connected to the top of the base plate (1), a first clamping plate (202) is movably inserted between two transverse L-shaped base plates (201), a sliding groove (203) is formed in the bottom of the first clamping plate (202), a sliding block (204) matched with the sliding groove (203) is fixedly connected to the top of the base plate (1), and a connecting rod (205) is hinged to one side, opposite to each other, of the two first clamping plates (202); a second clamping plate (206) is movably connected between the two vertical L-shaped base plates (201), two stop blocks (207) are symmetrically and fixedly connected to the right side of the top of the bottom plate (1), and one sides of the two stop blocks (207), which are opposite to each other, are fixedly connected with the adjacent L-shaped base plates (201) respectively;
the transmission mechanism (3) comprises an air cylinder (301), the bottom of the air cylinder (301) is movably connected to the top of the bottom plate (1), a movable groove is formed in the left side of the top of the bottom plate (1), a movable block is movably connected inside the movable groove, the top of the movable block is fixedly connected with the bottom of the air cylinder (301), a compression spring is fixedly connected between the left side of the movable block and the inner wall of the movable groove, a first transverse plate (302) is fixedly connected to the right side of the air cylinder (301), and one end of the air cylinder (301) penetrates through the first transverse rod and is fixedly connected with the left side of the clamping mechanism (2); the utility model discloses a clamping mechanism's (2) is fixed to be cup jointed fixed cover, No. one upper portion and the equal fixedly connected with carriage release lever (303) in lower part on diaphragm (302) right side, the middle part of carriage release lever (303) is fixed to be cup jointed fixed cover, fixed cover is articulated with the middle part of fixture (2), two supporting shoe (304) have been cup jointed in the middle part activity of carriage release lever (303), one side and adjacent fixture (2) fixed connection of supporting shoe (304), two diaphragm (305) No. two of one end fixedly connected with of carriage release lever (303), the left side overlap joint of No. two diaphragm (305) is on the right side of fixture (2), the middle part fixedly connected with connecting block (306) of No. two diaphragm (305), the right side fixed connection of connecting block (306.
2. A bridge welding apparatus as claimed in claim 1, wherein: the interior bottom surface fixedly connected with water pump of cooler bin (7), water pump and adjacent hose (9) fixed connection.
3. Use of a bridge welding device according to any one of claims 1-2, characterized in that: the method comprises the following steps:
s1, firstly, the bridge support is placed between the first clamping plate (202) and the second clamping plate (206), and the right side of the bridge support is pressed against the two stop blocks (207) fixedly connected with the top of the bottom plate (1) to limit.
S2, then starting the air cylinder (301), so that one end of the air cylinder (301) drives the fixedly connected second clamping plate (206) to abut against the bridge support, and the abutment pressed by the second clamping plate (206) is blocked by the stop block (207) and cannot drive the bridge support to move, so that the air cylinder (301) moves to the left side of the bottom plate (1) under the condition of reaction force.
S3, the first transverse plate (302) is driven to move towards the left side of the bottom plate (1) along with the movement of the air cylinder (301), the first transverse plate (302) drives the second transverse plate (305) to move towards the left side of the bottom plate (1) through the moving rod (303), and then the connecting block (306) fixedly connected to the middle of the second transverse plate (305) drives the second clamping plate (206) on the right side to clamp the two sides of the bridge support.
S4, the two moving rods (303) can drive the middle hinged connecting rods (205) to move along with the moving process of the first transverse plate (302), so that the two connecting rods (205) push the first hinged clamping plates (202) to move relatively, the front end and the rear end of the bridge support are clamped, and the bridge support is completely limited and fixed on the bottom plate (1).
S5, finally, the water pump is started, so that the cooling liquid in the water tank (8) cools the support welded to the top of the bottom plate (1) through the arc-shaped water tank (5), and the overhigh temperature in the welding process of the bridge support is avoided.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011440632.1A CN112643268B (en) | 2020-12-11 | 2020-12-11 | Bridge welding device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011440632.1A CN112643268B (en) | 2020-12-11 | 2020-12-11 | Bridge welding device and using method thereof |
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| CN112643268A true CN112643268A (en) | 2021-04-13 |
| CN112643268B CN112643268B (en) | 2022-05-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114939765A (en) * | 2022-04-06 | 2022-08-26 | 安徽省公路桥梁工程有限公司 | Steel bridge bottom U rib welding construction platform |
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| CN109530949A (en) * | 2018-12-26 | 2019-03-29 | 江苏中铁山桥重工有限公司 | A kind of large-scale bridge support backing plate welding method |
| CN210549102U (en) * | 2020-01-17 | 2020-05-19 | 洛阳吴重机械制造有限公司 | Bridge beam supports welding frock |
| CN211102466U (en) * | 2019-12-18 | 2020-07-28 | 常熟市宝德桥梁构件有限公司 | Bridge beam supports welding frock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107119556A (en) * | 2017-06-10 | 2017-09-01 | 郑州市市政维护工程有限公司 | A kind of multi-functional bridge seamless expansion-contraction devices and construction technology |
| DE202017006112U1 (en) * | 2017-11-27 | 2017-12-13 | Grenzebach Maschinenbau Gmbh | Device for virtually delay-free changing the welding direction of a system for friction stir welding when the geometric arrangement of the joining partner or material irregularities to be welded require this |
| CN109530949A (en) * | 2018-12-26 | 2019-03-29 | 江苏中铁山桥重工有限公司 | A kind of large-scale bridge support backing plate welding method |
| CN211102466U (en) * | 2019-12-18 | 2020-07-28 | 常熟市宝德桥梁构件有限公司 | Bridge beam supports welding frock |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114939765A (en) * | 2022-04-06 | 2022-08-26 | 安徽省公路桥梁工程有限公司 | Steel bridge bottom U rib welding construction platform |
| CN114939765B (en) * | 2022-04-06 | 2024-01-16 | 安徽省公路桥梁工程有限公司 | Steel bridge bottom U rib welding construction platform |
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| Publication number | Publication date |
|---|---|
| CN112643268B (en) | 2022-05-31 |
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