Automatic welding device and method for box girder top plate ribs

Abstract

The invention provides an automatic welding device and method for box girder top plate ribs. The automatic welding device comprises an operation table, a quantitative progressive cutting mechanism, a bending mechanism and a welding mechanism. The top plate rib is placed in the concave limiting groove and penetrates through the conveying mechanism and the cutting mechanism to abut against the abutting plate, then fixed-length cutting can be conducted on the top plate rib placed in the concave limiting groove through the cutting mechanism, and the top plate rib cut into sections can be pushed to the fixing column under the action of the pushing telescopic device and the pushing plate; at the moment, the swing column retracts to be flush with the operation table, the cut top plate rib is clamped through the swing column and the fixing column, and after clamping, the swing column can be indirectly driven by the first driving device to rotate along the arc-shaped hole, so that the two ends of the top plate rib are bent in the opposite directions around the fixing column; annular top plate ribs connected end to end are formed through the welding mechanism, replacement of equipment by workers is not needed in the process, and automatic forming of the top plate ribs is achieved.

Description

Technical Field

[0001] This invention relates to the field of box girder prefabrication technology, specifically to an automatic welding device and method for the top slab reinforcement of a box girder. Background Technology

[0002] In municipal road and bridge construction, box girders are indispensable. To improve construction efficiency, the structural components and internal reinforcing steel cages of box girders are usually prefabricated. When processing the steel cage, pre-bent stirrups are usually placed on a frame, and then longitudinal bars are passed through the stirrups inside and outside. Finally, the contact points of the stirrups and longitudinal bars are welded together to form a steel cage.

[0003] Chinese patent disclosure CN117620042A, entitled "A Support Device for Welding the Reinforcing Steel Frame of a Box Girder Top Slab," describes an invention that uses this support device to neatly and stably arrange stirrups on a support frame. A rebar traction machine then feeds the longitudinal bars one by one into the arranged stirrups on the support frame. Manually, using limiting bolts, one end of the longitudinal bar is fixed in a first through-sleeve on a first positioning plate, while the other end is movably inserted into a second through-sleeve on a second positioning plate on the other side of the support frame. The internal structure of the mounting box clamps and fixes the rebar, pulling it taut away from the support frame. This ensures the longitudinal bars inside the support frame remain straight and in contact with the inner wall of the stirrups, facilitating the welding robot to weld the connection points between the stirrups and longitudinal bars one by one. The patent, CN216633171U, describes a welding workbench and automated welding system for the top slab reinforcement of a box girder. The workbench is positioned using a positioning seat and a locking seat, and clamped and fixed using clamps and a clamping device. The workpiece can be clamped and formed in one operation, requiring only welding tools to weld the overlapping parts. After the initial zero position is determined, the workpiece's installation position is ensured by the tooling fixture, resulting in consistent clamping positions and improved welding quality. Furthermore, the automated welding system's welding efficiency is guaranteed by a welding robotic arm, directly eliminating the instability of welding efficiency previously caused by manual welding. It also ensures that loading / unloading and welding operations do not interfere with each other, thus achieving the goal of improving welding efficiency.

[0004] Although the aforementioned patents can fix the mechanical energy of the top slab reinforcement and replace manual welding with robots, the patents also have the following drawbacks: 1. Currently, the top slab reinforcement for butt welding is not prefabricated to a specific length, and workers still need to cut it according to the dimensions before welding, and then fix and weld the cut top slab reinforcement, resulting in excessive labor intensity for workers; 2. Since the equipment for cutting, bending and welding the top slab reinforcement is a single piece of equipment, workers often need to operate in sequence from cutting, bending and welding to weld the top slab reinforcement into a ring shape, which leads to cumbersome operation and poor welding efficiency of the top slab reinforcement. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic welding device and method for the top slab reinforcement of box girders, which aims to solve the problem that in the prior art, workers have to perform cutting, bending and welding operations sequentially to weld the top slab reinforcement into a ring shape, resulting in cumbersome operation and poor welding efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an automatic welding device and method for the top reinforcement of a box girder, comprising an operating table, a quantitative progressive cutting mechanism, a bending mechanism, and a welding mechanism; The operating platform is provided with an upward-facing concave limiting groove for placing the top plate reinforcement, thereby limiting the position of the top plate reinforcement. The quantitative progressive cutting mechanism is mounted on the operating table and located directly above the concave limiting groove, and pushes and cuts the top plate ribs placed in the concave limiting groove to a fixed length. The operating table is equipped with a push assembly extending in the front-back direction. The push assembly is located in front of the quantitative progressive cutting mechanism and pushes the cut top plate rib from the concave limiting groove into the bending mechanism. The bending mechanism is mounted on the operating table and is located behind the quantitative progressive cutting mechanism. The bending mechanism includes a fixed column, a swing column that can extend and retract vertically, a second telescopic device, and a rotating rod. The operating platform is provided with a support plate, and the fixed column is fixedly installed at the center of the support plate. The support plate has an arc-shaped hole that allows the swing column to move and is open from top to bottom. The movable rod end of the second telescopic device passes through the arc-shaped hole and is fixedly connected to the swing column. The rotating rod is rotatably installed at the bottom center of the support plate via a rotating shaft. The rotating rod is connected to a first driving device. The rotating rod is fixedly connected to the fixed rod end of the second telescopic device, so that the swing column swings along the arc-shaped hole with the rotating shaft as the axis. When the swing column is retracted to be flush with the operating table, the top plate rib can slide between the fixed column and the swing column. When the swing column is raised to its highest position, it can clamp the top plate rib through the fixed column and the swing column, so that when the swing column rotates, it drives the two ends of the top plate rib to bend in opposite directions around the fixed column. The welding mechanism is mounted on the operating table and extends from top to bottom to weld the two ends of the bent top plate reinforcement to form a ring-shaped top plate reinforcement connected end to end.

[0007] Preferably, the quantitative progressive cutting mechanism includes a conveying mechanism and a cutting mechanism arranged in sequence. The conveying mechanism can compress and convey the top plate reinforcement, and the cutting mechanism can cut the top plate reinforcement.

[0008] Preferably, the operating platform is equipped with a pressure sensor, and the top plate reinforcement triggers the pressure sensor under the action of the jacking assembly, so that the second telescopic device drives the swing column to rise and fall.

[0009] Preferably, the pushing assembly includes a pushing telescopic device and a pushing plate, wherein the pushing telescopic device is fixedly installed on the operating table, and the movable rod end of the pushing telescopic device is fixedly connected to the pushing plate.

[0010] Preferably, the welding mechanism includes a welding lifting mechanism and welding equipment extending in the vertical direction.

[0011] Preferably, the operating table has an elongated hole that is open from top to bottom, and a first telescopic device extending in the left and right direction is fixed on the inner wall of the elongated hole. The movable rod end of the first telescopic device is fixed with an abutment plate, so that the abutment plate can move left and right along the elongated hole. The operating table is equipped with a scale, which allows the length from the cutting blade to the abutment plate to be detected when the top plate rib extends along the concave limiting groove and abuts against the abutment plate.

[0012] Preferably, the operating table has a through hole that is open at both the top and bottom. The support plate is slidably disposed in the through hole. An adjustment mechanism is provided in the through hole. The adjustment mechanism is connected to the abutment plate so that when the abutment plate moves, it can drive the adjustment mechanism to move. The adjustment mechanism is connected to the two support plates so that the two support plates can move along the through hole in opposite or opposite directions.

[0013] Preferably, the adjustment mechanism includes an expansion and telescopic device, a sliding block, a fixed rail plate, and two movable plates spaced apart to the left and right. The fixed rail plate is slidably disposed in the through hole, and the expansion and telescopic device is slidably disposed on the inner side wall of the operating table. The movable rod end of the expansion and telescopic device is fixedly connected to the sliding block, so that the sliding block moves back and forth along the fixed rail plate. The movable plate is fixedly installed at the bottom of the bearing plate, and the sliding block is connected to the movable plate and the fixed rail plate respectively, so that the two movable plates can move in opposite or opposite directions.

[0014] Preferably, a linkage assembly is hinged to the movable plate, the linkage assembly is hinged to the fixed rail plate, and the linkage assembly is driven to the sliding block, so that the linkage assembly can be extended and retracted.

[0015] The preferred method is as follows: S1, place the top plate reinforcement in the concave limiting groove and push the top plate reinforcement towards the abutting plate so that the top plate reinforcement abuts against the abutting plate; S2, drive the first telescopic device to start, so that the abutment plate moves along the long hole to adjust the length of the top plate reinforcement. Then the workers cut the top plate reinforcement with a cutting knife. S3, when the abutment plate moves, it can drive the adjustment mechanism to move half of the distance the abutment plate has traveled, so that the adjustment mechanism is always at the midpoint of the top plate rib after cutting. S4, the cut top slab reinforcement is pushed out of the concave limiting groove by the pushing expansion device and pushed towards the fixed column; S5, during the pushing process of the cut top plate reinforcement, the swing column is located in front of the fixed column and the swing column is retracted to be flush with the operating table. At this time, the cut top plate reinforcement can be pushed between the fixed column and the swing column and stopped under the obstruction of the fixed column. S6, after the top slab reinforcement triggers the pressure sensor, the second telescopic device drives the swing column to extend to the highest point, so that the fixed column and the swing column clamp the top slab reinforcement. S7, drive the first drive device to start, causing the swing column to swing along the arc hole. During the swing, the swing column squeezes the cut top plate reinforcement, causing the two ends of the cut top plate reinforcement to bend 180° in opposite directions, forming a ring-shaped top plate reinforcement with the two ends abutting together. S8 drives the welding lifting mechanism, enabling the welding equipment to weld the two ends of the bent top plate reinforcement to form a closed annular top plate reinforcement.

[0016] The beneficial effects are: 1. The top plate reinforcement is placed in the concave limiting groove and passes through the conveying mechanism and the cutting mechanism to abut against the abutment plate. Then, the cutting mechanism can cut the top plate reinforcement placed in the concave limiting groove to a fixed length. The cut top plate reinforcement can be pushed to the fixed column under the action of the pushing telescopic device and the pushing plate. At this time, the swing column is retracted to be flush with the operating table, and the top plate reinforcement is clamped by the swing column and the fixed column. After being clamped, the swing column can be indirectly driven by the first driving device to rotate along the arc hole, so that the two ends of the top plate reinforcement are bent around the fixed column in opposite directions. Then, the two ends of the top plate reinforcement are welded by the welding mechanism to form a ring-shaped top plate reinforcement connected end to end. This process does not require the operator to change equipment, realizes the automatic forming of the top plate reinforcement, thus simplifying the operation and achieving a high welding efficiency of the top plate reinforcement.

[0017] 2. The first telescopic device can drive the abutment plate to move along the elongated hole. When the top plate reinforcement abuts against the abutment plate, the required length can be adjusted. Since the scale extends from the cutting blade to the elongated hole, the length of the top plate reinforcement can be observed according to the scale, so as to achieve the effect of adjusting the length of the top plate reinforcement according to the construction requirements.

[0018] 3. By adjusting the mechanism settings, the sliding block can be driven to move along the fixed track plate. During the movement, the two moving plates are driven to move towards each other or away from each other through the linkage assembly to adjust the distance between the two bearing plates. This allows the length of the bent top plate reinforcement to be adjusted according to the requirements, so as to achieve the purpose of producing top plate reinforcement of different lengths.

[0019] 4. When the abutment plate is at the far right of the long hole, the top plate rib is at its shortest. At this time, the fixed rail plate is at the midpoint between the abutment plate and the cutting blade, so that the two ends of the top plate rib can be bent. During the movement of the abutment plate, it can drive the fixed rail plate to move, so that the moving distance of the fixed rail plate is half the moving distance of the abutment plate. This ensures that the fixed rail plate is always at the midpoint between the abutment plate and the cutting blade, so as to achieve the purpose of being suitable for top plate ribs of different lengths. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the top plate reinforcement without bending in a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the top plate reinforcement bending structure in a specific embodiment of the present invention; Figure 3 This is a schematic diagram of the distribution of the quantitative progressive cutting mechanism in a specific embodiment of the present invention; Figure 4 This is a schematic diagram of the transmission structure of the jacking assembly in a specific embodiment of the present invention; Figure 5 This is a schematic diagram of the abutment plate transmission structure in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the distribution of the welding mechanism in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the transmission structure of the adjustment mechanism in a specific embodiment of the present invention; Figure 8 This is a schematic diagram of the distribution of the bearing plates in a specific embodiment of the present invention; Figure 9 This is a partial cross-sectional view of the operating table in a specific embodiment of the present invention; Figure 10 This is a schematic diagram of the structure in a specific embodiment of the present invention, showing the movement of the swing column along the arc-shaped hole; Figure 11 This is a schematic diagram of a specific embodiment of the present invention, showing a structure in which the support plates cannot be adjusted.

[0021] In the diagram: 1. Operating platform; 2. Vertical plate; 201. Conveying mechanism; 2011. Fixed frame; 2012. Pressing spring; 2013. Pressing component; 202. Cutting mechanism; 2021. Partition telescopic device; 2022. Cutting blade; 3. Bending mechanism; 301. Fixed column; 302. Swing column; 4. Welding mechanism; 401. Welding lifting mechanism; 402. Welding equipment; 5. Top plate reinforcement; 6. Pushing assembly; 601. Pushing telescopic device; 6 02. Push plate; 7. Through hole; 8. Bearing plate; 9. Arc-shaped hole; 10. First driving device; 11. Rotating rod; 12. Long hole; 13. First telescopic device; 14. Abutment plate; 15. Scale; 16. Adjustment mechanism; 1601. Expansion telescopic device; 1602. Sliding block; 1603. Fixed rail plate; 17. Linkage assembly; 18. L-shaped fixed plate; 19. Upper rack; 20. Lower rack; 21. Small gear; 22. Large gear. Detailed Implementation

[0022] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0023] Example 1: This example aims to provide an automatic welding device for the top slab reinforcement of a box girder. The top slab reinforcement 5 requires sequential use of one device after another to bend it into a ring shape and weld it end-to-end. This process is cumbersome and inefficient. In this example, the top slab reinforcement 5 can be automatically formed and welded after placement, eliminating the need for manual operation by construction personnel. This significantly reduces the complexity of the operation and improves the welding efficiency of the top slab reinforcement 5.

[0024] Based on the above issues, such as Figure 1-3 As shown, the construction workers place the top slab reinforcement 5 in the concave limiting groove, and the top slab reinforcement 5 can be transported and cut by the quantitative progressive cutting mechanism.

[0025] Specifically, the operating table 1 is provided with a concave limiting groove with an upward opening for placing the top plate reinforcement 5, which is used to place the top plate reinforcement 5 in the groove and to limit the position of the top plate reinforcement 5.

[0026] A vertical plate 2 is fixedly installed on the operating table 1. The quantitative progressive cutting mechanism is assembled on the vertical plate 2 to support the quantitative progressive cutting mechanism. The vertical plate 2 is located directly above the concave limiting groove. The quantitative progressive cutting mechanism includes a conveying mechanism 201 and a cutting mechanism 202 arranged in sequence. The conveying mechanism 201 can squeeze and convey the top plate rib 5, and the cutting mechanism 202 can cut the top plate rib 5.

[0027] like Figure 3As shown, the conveying mechanism 201 includes a fixed frame 2011, a pressing spring 2012, and a pressing member 2013 pressing on the top plate rib 5. In this embodiment, the pressing member 2013 consists of a pressing wheel and a mounting frame. The mounting frame is slidably disposed within the fixed frame 2011, and an eighth drive self-locking motor is fixedly mounted on one side of the mounting frame. The eighth drive self-locking motor is connected to the pressing wheel to drive the pressing wheel to rotate. The fixed frame 2011 is fixed on the vertical plate 2. The inner top wall is fixedly connected to the pressing spring 2012. In this embodiment, the pressing spring 2012 can press the pressing member 2013 onto the top plate rib 5, thereby pushing the top plate rib 5. The other end of the pressing spring 2012 is fixedly connected to the pressing member 2013, so that the pressing member 2013 can move up and down along the inner side wall of the fixed frame 2011. The pressing member 2013 can push the top plate rib 5 to the side of the abutting plate 14, so as to achieve the function of pushing the top plate rib 5.

[0028] The cutting mechanism 202 includes a partition telescopic device 2021 and a cutting blade 2022. In this embodiment, the partition telescopic device 2021 is a partition electric telescopic rod. The partition telescopic device 2021 is fixedly installed on the upright plate 2. The movable rod end of the partition telescopic device 2021 is connected to the cutting blade 2022, so that the cutting blade 2022 can cut the top plate rib 5. Under the action of the partition telescopic device 2021, the cutting blade 2022 can move up and down to cut the top plate rib 5 in the concave limiting groove.

[0029] like Figure 1 , Figure 2 and Figure 4 When the top plate rib 5 abuts against the abutment plate 14, the cutting blade 2022 can cut the top plate rib 5. Then, under the action of the pushing component 6, the top plate rib 5, which has been cut into a section in the concave limiting groove, is pushed into the bending mechanism 3. The pushing component 6 is located in front of the quantitative progressive cutting mechanism. The operating table 1 is provided with the abutment plate 14 so that the top plate rib 5 can abut against the abutment plate 14.

[0030] Specifically, the jacking assembly 6 includes a pushing telescopic device 601 and a pushing plate 602. In this embodiment, the pushing telescopic device 601 is a pushing electric telescopic rod. The pushing telescopic device 601 is fixedly installed on the operating table 1. The movable rod end of the pushing telescopic device 601 is fixedly connected to the pushing plate 602. When the top plate rib 5 is cut into a section, the pushing telescopic device 601 is activated, causing the pushing plate 602 to move. When the pushing plate 602 moves, it can push the top plate rib 5 towards the bending mechanism 3.

[0031] The control panel 1 is equipped with a pressure sensor. Under the action of the jacking assembly 6, the pressure sensor is triggered on the top plate rib 5, which causes the second telescopic device to drive the swing column 302 to rise and fall. When the top plate rib 5 is pushed to move towards the fixed column 301, the pressure sensor is triggered, which causes the swing column 302 to rise. After the top plate rib 5 is pushed through the swing column 302, the swing column 302 rises and clamps the top plate rib 5 through the fixed column 301 and the swing column 302.

[0032] When the top plate reinforcement 5 does not move toward the fixed column 301, the swing column 302 descends to be flush with the operating table 1, so as to avoid the top plate reinforcement 5 from being blocked when it is pushed.

[0033] like Figure 10 As shown, when the top plate reinforcement 5 abuts against the fixed column 301, it can cause the swing column 302 to rise and swing along the arc-shaped hole 9, so that the two ends of the top plate reinforcement 5 are bent 180°.

[0034] Specifically, the bending mechanism 3 is mounted on the operating table 1 and is located behind the quantitative progressive cutting mechanism. The bending mechanism 3 includes a fixed column 301, a swing column 302 that can extend and retract vertically, a second telescopic device, and a rotating rod 11. In this embodiment, the second telescopic device is a second electric telescopic rod, which is connected to the pressure sensor signal to realize the lifting and lowering of the swing column 302. The operating table 1 is provided with a support plate 8, and the fixed column 301 is fixedly installed at the center of the support plate 8. The support plate 8 has an arc-shaped hole 9 that allows the swing column 302 to move and is open vertically. The movable rod end of the second telescopic device passes through the arc-shaped hole 9 and is fixedly connected to the swing column 302. The rotating rod 11 is rotatably mounted at the bottom center of the bearing plate 8 via a rotating shaft. The rotating rod 11 is connected to a first driving device 10. In this embodiment, the first driving device 10 is a first self-locking motor. The rotating rod 11 is fixedly connected to the end of the fixed rod of the second telescopic device, so that the swing column 302 swings along the arc-shaped hole 9 with the rotating shaft as the axis. After the first driving device 10 is started, it can drive the rotating rod 11 to rotate, so that the second telescopic device moves along the arc-shaped hole 9 under the action of the rotating rod 11. When the second telescopic device moves, it can drive the swing column 302 to move, so that the end of the top plate rib 5 is bent 180° around the fixed column 301.

[0035] When the swing column 302 is retracted to be flush with the operating table 1, the top plate rib 5 can slide between the fixed column 301 and the swing column 302. When the swing column 302 is raised to its highest position, it can clamp the top plate rib 5 through the fixed column 301 and the swing column 302, so that when the swing column 302 rotates, it drives the two ends of the top plate rib 5 to bend around the fixed column 301 in the opposite direction.

[0036] like Figure 1 , Figure 2 and Figure 6As shown, an L-shaped fixing plate 18 is fixedly installed on the operating table 1. The welding lifting mechanism 401 and the welding equipment 402 are both assembled on the L-shaped fixing plate 18, which can weld the two ends of the bent top plate rib 5 to form a ring-shaped top plate rib 5 connected end to end.

[0037] Specifically, the welding mechanism 4 includes a welding lifting mechanism 401 extending in the vertical direction and a welding device 402. In this embodiment, the welding lifting mechanism 401 is a welding electric telescopic rod. Driving the welding lifting mechanism 401 to start allows the welding device 402 to descend between the two ends of the top plate rib 5 to weld the two ends of the top plate rib 5 together, thereby achieving a ring-shaped state for the top plate rib 5.

[0038] In Example 2, in the structure of Example 1, the abutment plate 14 and the bearing plate 8 cannot be moved, which makes it impossible to adjust the length of the cut top plate reinforcement 5 according to construction needs, and to adjust the length of the top plate reinforcement 5 into a ring state, thus reducing the practicality of the device.

[0039] Based on the above problems, this implementation example Figure 5 and Figure 11 As shown, the abutment plate 14 can move, and in the process of moving, it drives the bearing plate 8 to move. During the movement of the abutment plate 14, it can drive the fixed rail plate 1603 to move, so that the moving distance of the fixed rail plate 1603 is half the moving distance of the abutment plate 14, so that the fixed rail plate 1603 is always at the midpoint between the abutment plate 14 and the cutting blade 2022, so as to achieve the purpose of being suitable for top plate reinforcement 5 of different lengths.

[0040] Specifically, the operating table 1 has an elongated hole 12 that is open from top to bottom. A first telescopic device 13 extending in the left and right direction is fixed on the inner side wall of the elongated hole 12. In this embodiment, the first telescopic device 13 is a first electric telescopic rod. An abutment plate 14 is fixed at the end of the movable rod of the first telescopic device 13, so that the abutment plate 14 can move left and right along the elongated hole 12, driving the first telescopic device 13 to start, so that the abutment plate 14 can move along the elongated hole 12, so as to adjust the length of the cut top plate rib 5 as needed.

[0041] The operating table 1 is equipped with a scale 15, which allows the length from the cutting blade 2022 to the abutment plate 14 to be detected when the top plate rib 5 extends along the concave limiting groove and abuts against the abutment plate 14. The scale 15 enables the intuitive measurement of the required length of the top plate rib 5.

[0042] The operating table 1 has a through hole 7 that is open from top to bottom. The bearing plate 8 is slidably disposed in the through hole 7. The bearing plate 8 is connected to the abutment plate 14 in a transmission manner, so that when the abutment plate 14 moves, it can drive the two bearing plates 8 to move along the through hole 7 in opposite or opposite directions.

[0043] Specifically, an upper rack 19 is fixedly mounted on the abutment plate 14, and a lower rack 20 is fixedly mounted on the support plate 8. A small gear 21 and a large gear 22 are rotatably mounted inside the operating table 1. The small gear 21 meshes with the upper rack 19, and the large gear 22 meshes with the lower rack 20. The number of teeth of the large gear 22 is twice the number of teeth of the small gear 21, so that the distance the lower rack 20 moves is half the distance the upper rack 19 moves. This ensures that the distance the support plate 8 moves is half the distance the abutment plate 14 moves, so that the midpoint of the support plate 8 is always at the midpoint between the abutment plate 14 and the cutting blade 2022.

[0044] Compared to Embodiment 1, the advantage of this embodiment is that the position of the abutment plate 14 can be adjusted according to the needs to adjust the length of the cut top plate reinforcement 5, so that the length of the bent top plate reinforcement 5 can be adjusted according to the needs to achieve the purpose of producing top plate reinforcement 5 of different lengths.

[0045] In Example 3, the spacing between the two fixed columns 301 cannot be adjusted in the structures of Example 1 and Example 2, which makes it impossible to adjust the length of the bent top plate reinforcement 5 according to the requirements. This results in only specific top plate reinforcement 5 being bent, reducing the utilization rate.

[0046] Based on the above problems, this implementation example Figure 7-9 As shown, an adjustment mechanism 16 is provided in the through hole 7. The adjustment mechanism 16 is connected to the abutment plate 14 in a transmission manner, so that when the abutment plate 14 moves, it can drive the adjustment mechanism 16 to move. The adjustment mechanism 16 is connected to two support plates 8. The activation of the adjustment mechanism 16 enables the two support plates 8 to move along the through hole 7 in opposite or opposite directions.

[0047] Specifically, the adjustment mechanism 16 includes an expansion telescopic device 1601, a sliding block 1602, a fixed rail plate 1603, and two movable plates spaced apart on the left and right. In this embodiment, the expansion telescopic device 1601 is an electric telescopic rod. The fixed rail plate 1603 is slidably disposed in the through hole 7. The expansion telescopic device 1601 is slidably disposed on the inner side wall of the operating table 1. When the abutment plate 14 moves, it can drive the bearing plate 8 to move, thereby causing the expansion telescopic device 1601 to move. The movable rod end of the expansion telescopic device 1601 is fixedly connected to the sliding block 1602, causing the sliding block 1602 to move back and forth along the fixed rail plate 1603. After the expansion telescopic device 1601 is activated, it can drive the sliding block 1602 to move along the fixed rail plate 1603, so that the two movable plates can move in opposite or opposite directions.

[0048] In this embodiment, a telescopic sleeve is connected between the through hole 7 and the support plate 8, which can prevent debris from falling into the operating table 1 through the through hole 7. When the support plate 8 moves, it can squeeze or stretch the telescopic sleeve.

[0049] The movable plate is fixedly installed at the bottom of the bearing plate 8, and the sliding block 1602 is connected to the movable plate and the fixed rail plate 1603 respectively.

[0050] A connecting rod assembly 17 is hinged to the movable plate. The connecting rod assembly 17 is hinged to the fixed rail plate 1603 and is driven by the sliding block 1602, so that the connecting rod assembly 17 can be extended and retracted.

[0051] like Figure 8 As shown, the linkage assembly 17 is composed of multiple linkages hinged together and is hinged to the fixed rail plate 1603. Since a toggle link is hinged to the linkage assembly 17, and the toggle link is connected to the sliding block 1602, the sliding block 1602 can drive the toggle link to rotate when it moves, thereby causing the linkage assembly 17 to unfold, so that the two linkage assemblies 17 can extend in opposite or opposite directions.

[0052] Compared with Embodiment 1 and Embodiment 2, the advantage of this embodiment is that the spacing between the two fixed columns 301 can be adjusted according to the needs to achieve welding of bent top plate reinforcement 5 of different lengths, thereby improving the applicability of the device.

[0053] The following is a method for using an automatic welding device for the top slab reinforcement of a box girder: S1, place the top plate reinforcement 5 in the concave limiting groove and push the top plate reinforcement 5 towards the abutting plate 14 so that the top plate reinforcement 5 abuts against the abutting plate 14; S2, drive the first telescopic device 13 to start, so that the abutment plate 14 moves along the elongated hole 12 to adjust the length cut out by the top plate rib 5. Then the worker cuts the top plate rib 5 with the cutting knife 2022. The quantitative progressive cutting mechanism includes a conveying mechanism 201 and a cutting mechanism 202 arranged in sequence. The conveying mechanism 201 can squeeze and convey the top plate rib 5, and the cutting mechanism 202 can cut the top plate rib 5. S3, when the abutment plate 14 moves, it can drive the adjustment mechanism 16 to move half of the distance the abutment plate 14 moves, so that the adjustment mechanism 16 is always at the midpoint of the cut top plate rib 5. The moving distance of the bearing plate 8 is half of the moving distance of the abutment plate 14, so that the midpoint of the bearing plate 8 is always at the midpoint between the abutment plate 14 and the cutting blade 2022. The position of the abutment plate 14 can be adjusted according to the needs to adjust the length of the cut top plate rib 5, so that the length of the bent top plate rib 5 can be adjusted according to the needs to achieve the purpose of producing top plate ribs 5 of different lengths. S4, the cut top plate rib 5 is pushed out of the concave limiting groove and pushed towards the fixed column 301 under the action of the push telescopic device 601. When the top plate rib 5 is cut into a section, the push telescopic device 601 is activated, which causes the push plate 602 to move. When the push plate 602 moves, it can push the top plate rib 5 towards the bending mechanism 3. S5, during the pushing process of the cut top plate reinforcement 5, the swing column 302 is located in front of the fixed column 301, and the swing column 302 is retracted to be flush with the operating table 1. At this time, the cut top plate reinforcement 5 can be pushed between the fixed column 301 and the swing column 302 and stopped under the obstruction of the fixed column 301. S6, after the top slab reinforcement 5 triggers the pressure sensor, under the action of the second telescopic device, it drives the swing column 302 to extend to the highest point, so that the fixed column 301 and the swing column 302 clamp the top slab reinforcement 5. S7, drive the first drive device 10 to start, causing the swing column 302 to swing along the arc hole 9. During the swing, the swing column 302 squeezes the cut top plate rib 5, causing the two ends of the cut top plate rib 5 to bend 180° in opposite directions, forming an annular top plate rib 5 with the two ends abutting together. After the first drive device 10 is started, it can drive the rotating rod 11 to rotate, causing the second telescopic device to move along the arc hole 9 under the action of the rotating rod 11. When the second telescopic device moves, it can drive the swing column 302 to move, causing the end of the top plate rib 5 to bend 180° around the fixed column 301. S8, drive the welding lifting mechanism 401 so that the welding equipment 402 welds the two ends of the bent top plate rib 5 to form a closed ring top plate rib 5. Drive the welding lifting mechanism 401 to start so that the welding equipment 402 can descend between the two ends of the top plate rib 5 to weld the two ends of the top plate rib 5 to achieve the ring shape of the top plate rib 5.

[0054] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. The basic concept of the present invention lies in the fact that by coordinating the fixed-length cutting, the jacking component 6, the bending mechanism 3, and the welding mechanism 4, the top plate reinforcement 5 can be automatically bent and welded. This not only reduces the labor intensity of construction workers but also improves the welding efficiency of the top plate reinforcement 5. In addition, the positions of the abutment plate 14 and the bearing plate 8 can be adjusted to adjust the length of the top plate reinforcement 5 according to needs, making it suitable for annular top plate reinforcement 5 in different buildings. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic welding device for the top slab reinforcement of a box girder, characterized in that, It includes an operating table (1), a quantitative progressive cutting mechanism, a bending mechanism (3), and a welding mechanism; The operating table (1) is provided with a concave limiting groove with an upward opening for the placement of the top plate reinforcement (5) to limit the position of the top plate reinforcement (5); The quantitative progressive cutting mechanism is mounted on the operating table (1) and located directly above the concave limiting groove, and pushes and cuts the top plate rib (5) placed in the concave limiting groove to a fixed length. The operating table (1) is provided with a push assembly (6) extending in the front-back direction. The push assembly (6) is located in front of the quantitative progressive cutting mechanism and pushes the cut top plate rib (5) from the concave limiting groove into the bending mechanism (3). The bending mechanism (3) is mounted on the operating table (1). The bending mechanism (3) is located behind the quantitative progressive cutting mechanism. The bending mechanism (3) includes a fixed column (301), a swing column (302) that can extend and retract vertically, a second telescopic device, and a rotating rod (11). The operating table (1) is provided with a support plate (8), and the fixed column (301) is fixedly installed at the center of the support plate (8). The support plate (8) is provided with an arc-shaped hole (9) that allows the swing column (302) to move and is open from top to bottom. The end of the movable rod of the second telescopic device passes through the arc-shaped hole (9) and is fixedly connected to the swing column (302). The rotating rod (11) is rotatably installed at the bottom center of the support plate (8) through a rotating shaft. The rotating rod (11) is connected to a first driving device (10). The rotating rod (11) is fixedly connected to the end of the fixed rod of the second telescopic device, so that the swing column (302) swings along the arc-shaped hole (9) with the rotating shaft as the axis. When the swing column (302) is retracted to be flush with the operating table (1), the top plate rib (5) can slide between the fixed column (301) and the swing column (302). When the swing column (302) is raised to its highest position, it can clamp the top plate rib (5) through the fixed column (301) and the swing column (302). When the swing column (302) rotates, it drives the two ends of the top plate rib (5) to bend in opposite directions around the fixed column (301). The welding mechanism (4) is mounted on the operating table (1) and extends from top to bottom to weld the two ends of the bent top plate reinforcement (5) to form a ring-shaped top plate reinforcement (5) connected end to end.

2. The automatic welding device for the top slab reinforcement of a box girder according to claim 1, characterized in that, The quantitative progressive cutting mechanism includes a conveying mechanism (201) and a cutting mechanism (202) arranged in sequence. The conveying mechanism (201) can squeeze and convey the top plate reinforcement (5), and the cutting mechanism (202) can cut the top plate reinforcement (5).

3. The automatic welding device for the top slab reinforcement of a box girder according to claim 1, characterized in that, The operating table (1) is equipped with a pressure sensor. The top plate rib (5) triggers the pressure sensor under the action of the jacking assembly (6), so that the second telescopic device drives the swing column (302) to rise and fall.

4. The automatic welding device for the top slab reinforcement of a box girder according to claim 1, characterized in that, The push assembly (6) includes a push telescopic device (601) and a push plate (602). The push telescopic device (601) is fixedly installed on the operating table (1), and the movable rod end of the push telescopic device (601) is fixedly connected to the push plate (602).

5. The automatic welding device for the top slab reinforcement of a box girder according to claim 1, characterized in that, The welding mechanism includes a welding lifting mechanism (401) extending in the vertical direction and a welding device (402).

6. The automatic welding device for the top slab reinforcement of a box girder according to claim 3, characterized in that, The operating table is provided with a long hole (12) that is open from top to bottom. A first telescopic device (13) extending in the left and right direction is fixed on the inner wall of the long hole (12). An abutment plate (14) is fixed at the end of the movable rod of the first telescopic device (13), so that the abutment plate (14) can move left and right along the long hole (12). The operating table (1) is provided with a scale (15) so that when the top plate rib (5) extends along the concave limiting groove to abut against the abutment plate (14), the length from the cutting blade (2022) to the abutment plate (14) can be detected.

7. The automatic welding device for the top slab reinforcement of a box girder according to claim 1, characterized in that, The operating table (1) has a through hole (7) that is open from top to bottom. The bearing plate (8) is slidably disposed in the through hole (7). An adjustment mechanism (16) is provided in the through hole (7). The adjustment mechanism (16) is connected to the abutment plate (14) so ​​that when the abutment plate (14) moves, it can drive the adjustment mechanism (16) to move. The adjustment mechanism (16) is connected to the two bearing plates (8) so that the two bearing plates (8) can move along the through hole (7) in opposite or opposite directions.

8. The automatic welding device for the top reinforcement of a box girder according to claim 7, characterized in that, The adjustment mechanism (16) includes an expansion and telescopic device (1601), a sliding block (1602), a fixed rail plate (1603), and two movable plates spaced apart on the left and right. The fixed rail plate (1603) is slidably disposed in the through hole (7). The expansion and telescopic device (1601) is slidably disposed on the inner side wall of the operating table (1). The movable rod end of the expansion and telescopic device (1601) is fixedly connected to the sliding block (1602), so that the sliding block (1602) moves back and forth along the fixed rail plate (1603). The movable plate is fixedly installed at the bottom of the bearing plate (8), and the sliding block (1602) is connected to the movable plate and the fixed rail plate (1603) respectively, so that the two movable plates can move in opposite or opposite directions.

9. The automatic welding device for the top slab reinforcement of a box girder according to claim 8, characterized in that, A connecting rod assembly (17) is hinged to the movable plate. The connecting rod assembly (17) is hinged to the fixed rail plate (1603). The connecting rod assembly (17) is driven to the sliding block (1602), so that the connecting rod assembly (17) can be extended and retracted.

10. A method for using an automatic welding device for the top slab reinforcement of a box girder, characterized in that, The specific steps are as follows: S1, place the top plate reinforcement (5) in the concave limiting groove and push the top plate reinforcement (5) towards the abutting plate (14) so ​​that the top plate reinforcement (5) abuts against the abutting plate (14); S2, drive the first telescopic device (13) to start, so that the abutment plate (14) moves along the long hole (12) to adjust the length cut out by the top plate rib (5), and then the workers cut the top plate rib (5) with the cutting knife (2022); S3, when the abutment plate (14) moves, it can drive the adjustment mechanism (16) to move half of the distance the abutment plate (14) has traveled, so that the adjustment mechanism (16) is always at the midpoint of the top plate rib (5) after cutting. S4, the cut top plate reinforcement (5) is pushed out of the concave limiting groove by the pushing expansion device (601) and pushed towards the fixed column (301); S5, during the pushing process of the cut top plate reinforcement (5), the swing column (302) is located in front of the fixed column (301), and the swing column (302) is retracted to be flush with the operating table (1). At this time, the cut top plate reinforcement (5) can be pushed between the fixed column (301) and the swing column (302) and stopped under the obstruction of the fixed column (301). S6, after the top plate reinforcement (5) triggers the pressure sensor, under the action of the second telescopic device, it drives the swing column (302) to extend to the highest point, so that the fixed column (301) and the swing column (302) clamp the top plate reinforcement (5). S7, drive the first drive device (10) to start, so that the swing column (302) swings along the arc hole (9). During the swing, the swing column (302) squeezes the cut top plate reinforcement (5), so that the two ends of the cut top plate reinforcement (5) bend 180° in the opposite direction, forming an annular top plate reinforcement (5) with the two ends abutting together. S8, drive the welding lifting mechanism (401) so that the welding equipment (402) welds the two ends of the bent top plate reinforcement (5) to form a closed annular top plate reinforcement (5).

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