Supporting welding equipment for large-span box girder reinforcement framework and use method thereof

Abstract

The application discloses a support type welding equipment for a large-span box girder reinforcing cage and a use method thereof, relates to the technical field of welding equipment, and comprises a workbench, a plurality of auxiliary frames and two welding guns, a support type welding structure is installed on the top of the workbench, the support type welding structure comprises a fixing frame one, a mounting frame two and a support table, a pneumatic cylinder two and a transmission assembly are arranged between the fixing frame one and the support table, a jack is connected to the transmission assembly, the output end of the jack is fixedly connected with the mounting frame two, a driving assembly is installed in the mounting frame two, the driving assembly is used for driving the two welding guns, the reinforcing steel movement resistance of the plurality of auxiliary frames is small, the outer hoop one is moved away from the welding gun, space is provided for welding and fixing of the next outer hoop one and eight reinforcing steels, the outer hoop one is automatically replaced, workers do not need to install and limit the outer hoop one, workers do not need to work at the high-temperature welding position, and the safety of workers is ensured.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a support-type welding device and its method for using a steel reinforcement cage for a large-span box girder. Background Technology

[0002] The steel reinforcement cage is an indispensable core framework in reinforced concrete structures, especially in components such as pile foundations, piers, and diaphragm walls. It consists of main bars (longitudinal bars), stirrups (spiral or ring stirrups), and reinforcing bars, assembled into a three-dimensional cage-like steel structure through welding or binding. With industrialization, steel reinforcement cages have transitioned from manual assembly on construction sites to large-scale factory production. For example, the invention with existing patent application number 202510571279.7 relates to the technical field of steel cage welding processing equipment, specifically to a steel cage welding equipment, including: a welding frame, a support frame for supporting longitudinal bars arranged sequentially on the welding frame, and a traction frame for pulling longitudinal bars; an installation mechanism for installing longitudinal bars on the support frame; and a pushing mechanism for pushing longitudinal bars on the support frame to the traction frame; wherein the support frame is composed of an installation frame and a rotating disk.

[0003] Taking the aforementioned steel cage welding equipment as an example, although the welding equipment can support and clamp multiple steel bars, during the processing, because the steel bar clamping structure needs to clamp and fix the steel bars, the outer hoop (transverse steel bar ring) cannot move freely on the outside of multiple steel bars. The staff still needs to install the outer hoop to the corresponding position on the outside of multiple steel bars and limit it according to the welding process, which results in slow welding speed. The staff needs to operate the steel cage during welding, which is easy to get injured. Summary of the Invention

[0004] The purpose of this invention is to provide a support welding device and method for the steel reinforcement cage of a large-span box girder, so as to solve the technical problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a support-type welding device for the steel reinforcement skeleton of a large-span box girder, comprising a workbench, multiple auxiliary frames, and two welding torches. A support-type welding structure is installed on the top of the workbench. The support-type welding structure includes a fixed frame one, an mounting frame two, and a support platform. A pneumatic cylinder two and a transmission assembly are provided between the fixed frame one and the support platform. The transmission assembly is connected to a jack, and the output end of the jack is fixedly connected to the mounting frame two. A drive assembly is installed inside the mounting frame two, and the drive assembly is used to drive the two welding torches. A clamping assembly and a material pulling assembly are installed on the support platform. Eight circular holes are opened on one side of the fixed frame one, and eight grooves are opened on the outer side of the support platform. A power output structure is provided between the support-type welding structure and the workbench.

[0006] Preferably, the auxiliary frame includes an L-shaped frame and three support rollers rotatably connected to one side of the L-shaped frame. The three support rollers are arranged sequentially from top to bottom. All eight circular holes are filled with reinforcing bars. The number of the eight reinforcing bars distributed from top to bottom are three, two, and three respectively. The reinforcing bars are matched with outer hoop one and outer hoop two.

[0007] Preferably, the workbench includes a processing table, two mounting brackets, and a fixing plate. The mounting brackets and the fixing plate are both fixedly installed on the top of the processing table. The top of the fixing plate is fixed to the fixing bracket. Multiple rotating wheels are rotatably connected inside the mounting bracket, and some of the rotating wheels abut against the mounting bracket.

[0008] Preferably, the drive assembly includes a gear 1 slidably connected inside the mounting frame 2, a fixed frame 4 fixedly connected inside the gear 1, and two mounting frames 3 fixedly inserted on the fixed frame 4. Two telescopic rods 1 and a pneumatic cylinder 1 are fixedly connected inside the mounting frame 3. The two welding torches are slidably installed inside the two mounting frames 3 respectively. The piston end of the telescopic rod 1 and the piston end of the pneumatic cylinder 1 are both fixedly connected to the adjacent welding torch.

[0009] Preferably, the power output structure includes a gear two meshing with a gear one, a transmission shaft two fixedly inserted inside the gear two, and a brake sleeved on the outside of the transmission shaft two. A connecting frame two is fixedly connected between the brake and the mounting frame two. A connecting frame one is fixedly connected to the side of the mounting frame two away from the connecting frame two. A drive motor and a gearbox are fixedly connected to the bottom of the connecting frame one. The output end of the drive motor is fixedly connected to the input end of the gearbox, and the output end of the gearbox is fixedly connected to the transmission shaft two.

[0010] Preferably, the transmission assembly includes a drive shaft rotatably mounted on a fixed frame, two take-up frames fixedly connected to the outside of the drive shaft, a mounting shaft rotatably connected to one side of the fixed frame, and two mounting frames four fixedly connected inside the fixed frame. Each of the two mounting frames four has a telescopic rod two fixedly connected inside. The pneumatic cylinder two is fixedly installed inside one of the mounting frames four. The piston end of the telescopic rod two and the piston end of the pneumatic cylinder two are both fixedly connected to the support platform.

[0011] Preferably, both of the cable take-up frames are fixedly connected to the support platform with pull cables, a torsion spring is fixedly connected to the first mounting shaft and the first transmission shaft, a protective box is fixedly connected to the outside of the first fixing frame, the torsion spring is disposed inside the protective box, one end of the first transmission shaft is fixedly connected to the input end of the jack, three second fixing frames are fixedly connected to the outside of the first fixing frame, each second fixing frame has a spring-type telescopic rod fixedly inserted inside, the piston end of the spring-type telescopic rod and the piston end of the jack are fixedly connected to the second mounting frame, and a third fixing frame is fixedly connected between the jack and the first fixing frame.

[0012] Preferably, the clamping assembly includes a vacuum pump fixedly connected to the outside of the support platform, a sliding box slidably connected inside the support platform, a solenoid valve two, a telescopic tube one, two pneumatic cylinders four, two telescopic rods three, and two telescopic tubes two fixedly connected to the outside of the sliding box. The two telescopic tubes two are respectively arranged on both sides of the sliding box. A mounting bracket five is fixedly sleeved on the outside of the telescopic tube two. An air guide pipe is fixedly connected to the end of the telescopic tube two away from the sliding box. The outer wall of the air guide pipe is fixedly connected to the mounting bracket five. A suction cup is fixedly connected to one end of the air guide pipe. One of the suction cups is fixedly threaded through... A mounting frame six is ​​provided, with a retractable liquid storage component fixedly connected inside the mounting frame six. A round rod is fixedly connected to one end of the retractable liquid storage component. A hydraulic sensor is fixedly connected to the outside of the mounting frame six. The piston ends of the two pneumatic cylinders four are fixedly connected to the two mounting frames five respectively. The piston ends of the two telescopic rods three are fixedly connected to the two mounting frames five respectively. The telescopic tube one is fixedly connected to the air inlet end of the air pump. A solenoid valve one is fixedly connected to the air outlet end of the air pump. A pneumatic cylinder three is fixedly connected inside the support platform. The piston end of the pneumatic cylinder three is fixedly connected to the sliding box.

[0013] Preferably, the material pulling assembly includes a hydraulic cylinder fixedly embedded at the bottom of the support platform, a fixed frame five fixedly connected to the piston end of the hydraulic cylinder, and two metal frames fixedly connected to the fixed frame five. The bottom of the metal frame is rotatably connected to a mounting shaft two. A rotating plate is fixedly installed on the outside of the mounting shaft two. A limit plate is provided on the side of the rotating plate away from the fixed frame five. The limit plate is fixedly connected to the metal frame. Two elastic plates are fixedly connected between the mounting shaft two and the metal frame.

[0014] The method of using the support-type welding equipment includes the following steps: Step 1: Control the operation of the support-type welding structure and adjust the relative distance between the fixed frame and the support platform; Step 2: Pass one end of the steel bar through a round hole and then through the groove at the corresponding position. Push the outer hoop one from the outside of the support platform toward the position of the fixing frame one. Place the corresponding number of outer hoop one between the fixing frame one and the support platform. Step 3: Control the operation of the clamping assembly. When the suction cup presses against the outer clamp and undergoes a certain deformation, the pneumatic cylinder 3 stops working. Step 4: The air pump starts working, and the two suction cups adhere and fix the outer hoop one. Step 5: The pneumatic cylinder three retracts, and the outer clamp one moves between the two welding torches. Then, the pneumatic cylinder three stops working, completing the positioning of the outer clamp one with the welding torch. Step Six: Control the power output structure and drive components to work, control the distance between the welding torch nozzle and the outer hoop, and have the two welding torches work to weld the outer hoop and the reinforcing bar at the contact point. Step 7: The material pulling assembly works, the rotating plate drives the outer hoop one and the eight steel bars to move, the outer hoop one moves away from the welding gun, providing space for the welding and fixing of the next outer hoop one and the eight steel bars; Step 8: Repeat steps 3, 4, 5, 6, and 7.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. When this application is used, the resistance to the movement of the steel bars is small under the support of multiple auxiliary frames, so that the outer hoop moves away from the welding gun, providing space for the welding and fixing of the next outer hoop to the eight steel bars. The outer hoop is automatically pulled and replaced, eliminating the need for workers to install and limit the outer hoop. Workers do not need to work in high-temperature welding positions, ensuring the safety of workers and ensuring the speed of steel cage welding.

[0016] 2. When using this application, the eight steel bars are always in a horizontal position between the fixed frame and the support platform, which avoids the reduction of welding quality caused by bending of the steel bars at the welding position. Moreover, there is no need to load and position the outer hoop during the welding process, which reduces time and cost waste and ensures that the steel cage composed of eight steel bars and multiple outer hoops is simple and convenient to weld. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the outer hoop of the present invention; Figure 3 This is a schematic diagram of the auxiliary frame of the present invention; Figure 4 This is a schematic diagram of the power output structure of the present invention; Figure 5 for Figure 4 Enlarged view of the structure at point A; Figure 6 This is a schematic diagram of the connection structure between the fixing frame and the support platform of the present invention; Figure 7 This is a schematic diagram of the structure of the mounting bracket four of the present invention; Figure 8 This is a schematic diagram of the supporting welded structure of the present invention; Figure 9 This is a schematic diagram of the structure of gear one of the present invention; Figure 10 This is a schematic diagram of the structure of mounting bracket three of the present invention; Figure 11 This is a schematic diagram of the structure of the sliding box of the present invention; Figure 12 This is a cross-sectional view of the suction cup of the present invention; Figure 13 This is a schematic diagram of the support platform of the present invention; Figure 14 This is a schematic diagram of the structure of the rotating plate of the present invention; Figure 15 This is a schematic diagram of the outer hoop of the present invention.

[0018] Numbering on the map: 1. Workbench; 11. Machining table; 12. Mounting bracket one; 13. Rotating wheels; 14. Fixing plate; 2. Support-type welded structure; 21. Fixing frame one; 22. Round hole; 23. Fixing frame two; 24. Spring-loaded telescopic rod; 25. Fixing frame three; 26. Jack; 27. Mounting frame two; 28. Gear one; 29. ​​Fixing frame four; 210. Mounting frame three; 211. Telescopic rod one; 212. Pneumatic cylinder one; 213. Support platform; 214. Groove; 215. Mounting frame four; 216. Telescopic rod two; 217. Pneumatic cylinder two; 218. Drive shaft one; 219. Mounting shaft one; 220. Torsion spring; 221. Protective box; 222. Cable take-up frame; 223. Pull cable; 224. Sliding box; 225. Telescopic tube one; 226. Air pump; 227. Solenoid valve one; 228. Pneumatic cylinder three; 229. Pneumatic cylinder four; 230. Telescopic rod three; 231. Telescopic tube two; 232. Mounting bracket five; 233. Air guide tube; 234. Suction cup; 235. Mounting bracket six; 236. Hydraulic sensor; 237. Telescopic liquid storage component; 238. Round rod; 239. Hydraulic cylinder; 240. Fixing bracket five; 241. Metal frame; 242. Mounting shaft two; 243. Rotating plate; 244. Elastic sheet; 245. Limiting plate; 246. Solenoid valve two; 3. Auxiliary frame; 31. L-shaped frame; 32. Support roller; 4. Reinforcing bars; 5. Outer hoop 1; 6. Welding torch; 7. Power output structure; 71. Drive motor; 72. Gearbox; 73. Drive shaft two; 74. Gear two; 75. Brake; 76. Connecting frame one; 77. Connecting frame two; 8. Outer hoop two. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example: Figures 1-14As shown, the present invention provides a technical solution for a supported welding device for a large-span box girder steel reinforcement skeleton, including a workbench 1, multiple auxiliary frames 3, and two welding torches 6. A supported welding structure 2 is installed on the top of the workbench 1. The supported welding structure 2 includes a fixed frame 21, a mounting frame 27, and a support platform 213. A pneumatic cylinder 217 and a transmission assembly are arranged between the fixed frame 21 and the support platform 213. The transmission assembly is connected to a jack 26. The output end of the jack 26 is fixedly connected to the mounting frame 27. A drive assembly is installed inside the mounting frame 27 to drive the two welding torches 6. A clamping assembly and a material pulling assembly are installed on the support platform 213. Eight round holes 22 are opened on one side of the fixed frame 21, and eight grooves 214 are opened on the outer side of the support platform 213. A power output structure 7 is arranged between the supported welding structure 2 and the workbench 1. The supported welding device consists of the workbench 1, multiple auxiliary frames 3, two welding torches 6, and the supported welding structure 2.

[0021] The operation of the support-type welding equipment is controlled by a human-machine interface device, which is based on existing hydraulic technology and will not be elaborated here. The usage method of the support-type welding equipment is as follows: Example 1: Step 1: Based on the overall length of the reinforcing cage, control the operation of the supported welded structure 2. The transmission component in the supported welded structure 2 operates, with the transmission shaft 218 rotating and passing through the fixed frame 21. Two take-up frames 222 fixedly connected to the outside of the transmission shaft 218 are both fixedly connected to the support platform 213 with pull wires 223. The two mounting frames 215 fixedly connected inside the fixed frame 211 are both fixedly connected with telescopic rods 216. A pneumatic cylinder 217 is fixedly installed inside one of the mounting frames 215. The piston ends of the telescopic rod 216 and the pneumatic cylinder 217 are both fixedly connected to the support platform 213. Under the action of the telescopic rod 216 and the pneumatic cylinder 217, the support platform 213 moves left and right on one side of the fixed frame 21. Control the operation of the pneumatic cylinder 217 to control the left and right movement of the support platform 213 and adjust the relative distance between the support platform 213 and the fixed frame 21.

[0022] Three fixed brackets 23 are fixedly connected to the outside of the fixed bracket 1 21. Each fixed bracket 23 has a spring-type telescopic rod 24 fixedly inserted inside. The piston end of the spring-type telescopic rod 24 is fixedly connected to the mounting bracket 27. Under the action of the three spring-type telescopic rods 24, the mounting bracket 27 can only move left and right. Two mounting brackets 12 and a fixed plate 14 are fixedly connected to the top of the processing table 11 in the worktable 1. The top of the fixed plate 14 is fixed to the fixed bracket 1 21. The relative position between the fixed bracket 1 21 and the worktable 1 cannot change. The worktable 1 is fixed to the ground, so the position of the fixed bracket 1 21 is fixed. Multiple rotating wheels 13 are rotatably connected inside the mounting bracket 12. Some of the rotating wheels 13 abut against the outside of the mounting bracket 27. The multiple rotating wheels 13 inside the two mounting brackets 12 form two support slides on both sides of the mounting bracket 27. While providing vertical support for the mounting bracket 27, it reduces the resistance to the horizontal movement of the mounting bracket 27 and reduces the force required for the movement of the mounting bracket 27.

[0023] When the support platform 213 moves to the right, the pull wire 223 is pulled, and the pull wire 223 wrapped around the outside of the take-up frame 222 unfolds. The drive shaft 218 rotates clockwise. One end of the drive shaft 218 is fixedly connected to the input end of the jack 26. A fixed frame 25 is fixedly connected between the jack 26 and the fixed frame 21. The jack 26 remains stationary. The rotation of the drive shaft 218 causes the jack 26 to extend. The mounting frame 27, which is fixedly connected to the piston end of the jack 26, moves. The drive assembly installed on the mounting frame 27 and the two welding guns 6 driven by the drive assembly move to the right, so that the two welding guns 6 move to the right synchronously with the support platform 213. The relative distance between the two welding guns 6 and the support platform 213 remains unchanged, which facilitates the positioning and conveying of the outer hoop 5 and reduces the technical difficulty of semi-automatic welding of the rebar cage.

[0024] When the support platform 213 moves to the left, the pull wire 223 is released. Because the mounting shaft 219 is rotatably connected to the outside of the fixed frame 21, and a torsion spring 220 is fixedly connected between the mounting shaft 219 and the transmission shaft 218, the torsion spring 220 rebounds and drives the transmission shaft 218 to rotate in the opposite direction. The jack 26 retracts, and the mounting frame 27 moves to the left in sync. The protective box 221 fixedly connected to the outside of the fixed frame 21 covers the outside of the torsion spring 220, protecting the torsion spring 220 and ensuring its stable and efficient operation.

[0025] The operation of the control support welding structure 2 is controlled by adjusting the relative distance between the fixed frame 21 and the support platform 213.

[0026] Step 2: Three support rollers 32 are rotatably connected to one side of the L-shaped frame 31 in the auxiliary frame 3. The three support rollers 32 are arranged from top to bottom. The L-shaped frame 31 is fixed to the ground. According to the length of the steel cage to be processed, multiple auxiliary frames 3 are set on one side of the workbench 1 to support the steel bars 4. The steel bars 4 are all inserted into the eight round holes 22. The number of the eight steel bars 4 distributed from top to bottom is three, two and three respectively. The steel bars 4 of the same height are supported by the support rollers 32 that can rotate at the corresponding positions to reduce the resistance to the movement of the steel bars 4.

[0027] In the supported welded structure 2, the fixing frame 21 has eight round holes 22 on one side, and the support platform 213 has eight grooves 214 on the outside. The round holes 22 and the grooves 214 correspond one-to-one. After passing one end of the reinforcing bar 4 through a round hole 22, it passes through the corresponding groove 214, so that the reinforcing bar 4 is supported and limited by the fixing frame 21. The position of the reinforcing bar 4 between the fixing frame 21 and the support platform 213 is kept horizontal. Then, the outer hoop 5 is pushed from the outside of the support platform 213 towards the position of the fixing frame 21, so that the outer hoop 5 clamps the eight reinforcing bars 4. Under the action of the fixing frame 21, the outer hoop 5 fits with the eight reinforcing bars 4.

[0028] Based on the length of the reinforcing cage, after adjusting the relative distance between the fixed frame 21 and the support platform 213, a corresponding number of outer hoops 5 are placed between the fixed frame 21 and the support platform 213. This completes the preparation work for welding the reinforcing cage. There is no need for workers to assemble and limit the outer hoops 5 and the eight reinforcing bars 4 during the welding process, which reduces the physical labor input of workers and lowers the time cost of processing the reinforcing cage.

[0029] Step 3: After the multiple outer clamps 5 are placed, the clamping components installed on the control support platform 213 are operated. An air pump 226 is fixedly connected to the outside of the support platform 213, and a solenoid valve 227 is fixedly connected to the air outlet of the air pump 226. The air pump 226 plays the role of air extraction.

[0030] Inside the support platform 213, a sliding box 224 is slidably connected to a solenoid valve 246, a telescopic tube 225, two pneumatic cylinders 229, two telescopic rods 230, and two telescopic tubes 231 are fixedly connected to the outside of the sliding box 224. The two telescopic tubes 231 are respectively located on both sides of the sliding box 224 and communicate with the inside of the sliding box 224. A mounting bracket 232 is fixedly sleeved on the outside of the telescopic tube 231. An air guide pipe 233 is fixedly connected to the end of the telescopic tube 231 away from the sliding box 224. A suction cup 234 is fixedly connected to the other end of the air guide pipe 233. Since the piston ends of the two pneumatic cylinders 229 are fixedly connected to the two mounting brackets 232, and the piston ends of the two telescopic rods 230 are fixedly connected to the two mounting brackets 232, the pneumatic cylinders 229 and the telescopic rods 230 cooperate to support and limit the mounting brackets 232, and the mounting brackets 232 move according to a pre-trajectory.

[0031] At this time, the two pneumatic cylinders 229 are working, the two mounting brackets 232 move outward from the support platform 213, the air guide pipe 233 and the suction cup 234 move outward from the support platform 213, and after the suction cup 234 is aligned with one side of the outer hoop 5, the pneumatic cylinder 229 stops working, the pneumatic cylinder 228 fixedly connected inside the support platform 213 starts working and extends the sliding box 224 fixedly connected to the piston end of the pneumatic cylinder 228 and the support platform 213. Therefore, the sliding box 224 moves towards the fixed bracket 21, and the suction cup 234 moves towards the outer hoop 5.

[0032] One of the suction cups 234 is fixedly fitted with a mounting bracket 235. Inside the mounting bracket 235, a retractable liquid reservoir 237 is fixedly connected to one end with a round rod 238. A hydraulic sensor 236 is fixedly connected to the side of the mounting bracket 235 away from the fixing bracket 21. The hydraulic sensor 236 detects the hydraulic pressure inside the retractable liquid reservoir 237. As the suction cup 234 moves towards the outer clamp 5, the round rod 238 abuts against the outer clamp 5. Since the multiple outer clamps 5 are close to each other and their movement path is restricted by the fixing bracket 21, the movement of the round rod 238 is limited. The retractable liquid reservoir 237 contracts, increasing the internal hydraulic pressure. When the suction cup 234 abuts against the outer clamp 5 and undergoes a certain deformation, the hydraulic pressure value detected by the hydraulic sensor 236 exceeds the preset value. The human-machine interface device receiving feedback from the hydraulic sensor 236 controls the pneumatic cylinder 228 to stop working, automatically completing the positioning of the clamping component with the outer clamps 5 at different positions.

[0033] Step 4: Control the operation of the air pump 226. The telescopic tube 225 is fixedly connected to the air inlet of the air pump 226. Therefore, the air pump 226 works by drawing air from the inside of the suction cup 234 through the telescopic tube 225, the sliding box 224, the two telescopic tubes 231, and the two air guide tubes 233. As the suction cup 234 presses against the outer hoop 5 and undergoes a certain deformation, a negative pressure is generated inside the suction cup 234 to adsorb and fix the outer hoop 5. The two suction cups 234 adsorb and fix the outer hoop 5.

[0034] After a period of time, the air pump 226 stops working, and the solenoid valve 227 works to seal the air outlet of the air pump 226, completing the clamping work of the outer clamp 5.

[0035] Step 5: Control the pneumatic cylinder 228 to retract, and move the two suction cups 234 and the outer hoop 5 clamped and fixed by the two suction cups 234 towards the support platform 213. When the outer hoop 5 moves between the two welding guns 6, the pneumatic cylinder 228 stops working, completing the positioning of the outer hoop 5 and the welding guns 6.

[0036] Step Six: Control the operation of the power output structure 7. In the power output structure 7, gear 2 74 meshes with gear 1 28. A brake 75 is sleeved on the outside of the transmission shaft 2 73 fixedly inserted inside gear 2 74. A connecting frame 2 77 is fixedly connected between the brake 75 and the mounting frame 2 27. The brake 75 and the mounting frame 2 27 move synchronously. A connecting frame 1 76 is fixedly connected to the side of the mounting frame 2 27 away from the connecting frame 2 77. A drive motor 71 and a gearbox 72 are fixedly connected to the bottom of the connecting frame 1 76. The drive motor 71 and the gearbox 72 move synchronously with the mounting frame 2 27. The output end of the drive motor 71 is fixedly connected to the input end of the gearbox 72. The output end of the gearbox 72 is fixedly connected to the transmission shaft 2 73. After the drive motor 71 is controlled to work, the transmission shaft 2 73 drives gear 2 74 to rotate under the transmission of the gearbox 72, and gear 1 28 rotates.

[0037] In the drive assembly, gear 28 rotates inside mounting bracket 27. A fixed bracket 29 is fixedly connected inside gear 28, and two mounting brackets 210 fixedly pass through the fixed bracket 29 rotate. Two welding torches 6 are slidably mounted inside the two mounting brackets 210. The welding torches 6 rotate, and two telescopic rods 211 and a pneumatic cylinder 212 are fixedly connected inside the mounting brackets 210. The piston ends of the telescopic rods 211 and the pneumatic cylinder 212 are fixedly connected to the adjacent welding torches 6. Controlling the pneumatic cylinder 212 drives the welding torches 6, controlling the distance between the nozzle of the welding torch 6 and the outer hoop 5. With the cooperation of the power output structure 7 and the pneumatic cylinder 212, the welding torches 6 move along a preset trajectory. During this process, the two welding torches 6 work to weld the outer hoop 5 at the contact point with the reinforcing bars 4, completing the welding work between the outer hoop 5 and the eight reinforcing bars 4.

[0038] After the two welding torches 6 rotate 1.3-3 times, the welding and fixing work of one outer hoop 5 and eight steel bars 4 is completed. The pneumatic cylinder 212 retracts to its limit and the welding torches 6 move away from the steel bars 4.

[0039] Step 7: Wait for a period of time for the weld between the reinforcing bar 4 and the outer hoop 5 to solidify. The hydraulic cylinder 239 in the material pulling assembly is fixedly embedded at the bottom of the support platform 213. The piston end of the hydraulic cylinder 239 is fixedly connected to a fixed frame 240, which is also fixedly connected to two metal frames 241. A rotating plate 243 is fixedly installed on the outer side of the mounting shaft 242, which is rotatably connected to the bottom of the metal frames 241. A limiting plate 245 is provided on the side of the rotating plate 243 away from the fixed frame 240. The limiting plate 245 is fixedly connected to the metal frame 241, and is relatively short and not on the movement trajectory of the outer hoop 5. Two elastic plates 244 are fixedly connected between the mounting shaft 242 and the metal frame 241. Therefore, in Step 6, when the outer hoop 5 moves towards the support platform 213, it pushes the bottom end of the rotating plate 243 to rotate towards the position of the support platform 213. When the outer hoop 5 disengages from the rotating plate 243, the rebounding elastic plates 244 restore the rotating plate 243 to a vertical state.

[0040] After the waiting time ends, the weld between the rebar 4 and the outer hoop 5 solidifies. Control solenoid valves 246 and 227 open, depressurizing the suction cup 234. Pneumatic cylinder 229, along with mounting bracket 232 and suction cup 234, returns to the support platform 213, making way for the movement of the outer hoop 5, which is fixed to the outside of the rebar 4. Control hydraulic cylinder 239 pushes fixing bracket 240 away from fixing bracket 21. Rotating plate 243 contacts the outer hoop 5, and its rotation is limited by limiting plate 245. With the movement of fixing bracket 240, rotating plate 243 moves the outer hoop 5 and the eight rebars 4. Supported by multiple auxiliary brackets 3, the rebar 4 experiences less resistance, allowing the outer hoop 5 to move away from the welding torch 6, providing space for the next outer hoop 5 to be welded and fixed to the eight rebars 4. The outer hoop 5 is automatically pulled and replaced without requiring manual installation or limiting. Workers do not need to work at high temperatures, ensuring worker safety and the speed of rebar cage welding.

[0041] Subsequently, the metal frame 241 drives the fixed frame 240 to reset.

[0042] Step 8: Repeat steps 3, 4, 5, 6, and 7 to weld and fix multiple outer hoops 5 to the outside of eight reinforcing bars 4. Through the structural arrangement of the fixing frame 21 and the support platform 213, the eight reinforcing bars 4 are supported by the fixing frame 21 and the auxiliary frame 3 without the outer hoops 5 being fixed. The interior of the reinforcing cage formed by the outer hoops 5 and the eight reinforcing bars 4 near the fixing frame 21 is supported by the support platform 213, so that the position of the eight reinforcing bars 4 between the fixing frame 21 and the support platform 213 is always in a horizontal state. This avoids the reduction in welding quality caused by bending of the reinforcing bars 4 at the welding position, and eliminates the need to load and position the outer hoops 5 during the welding process, reducing time and cost waste, and ensuring the simple and convenient welding of the reinforcing cage formed by the eight reinforcing bars 4 and multiple outer hoops 5.

[0043] Example 2, as Figure 15 As shown: Based on the above embodiment one, the telescopic tube 231 is proportionally reduced and then elongated, and the outer hoop 28 that can be fitted onto the outside of the support platform 213 is used instead of the outer hoop 15.

[0044] When performing step seven in embodiment one, the hydraulic cylinder 239 is controlled to push the fixed frame 240 to move away from the fixed frame 21, and the rotating plate 243 drives the outer hoop 28 and the eight steel bars 4 to move. During this process, the hydraulic cylinder 239 is controlled to push the rotating plate 243 to move a distance so that the outer hoop 28 stops at a position away from the fixed frame 21 outside the support platform 213, so that the support platform 213 supports the interior of the outer hoop 28 which is fixed to the eight steel bars 4.

[0045] In the application process, through a slight design of the support platform 213 structure, the support platform 213 always supports the interior of the outer hoop 28 that is closest to the fixed frame 1 21 and welded together with the eight steel bars 4. The eight steel bars 4 between the fixed frame 1 21 and the support platform 213 are always in a horizontal state. The automatic installation and positioning between the outer hoop 28 and the eight steel bars 4 are not affected. The working state of the support welding equipment is adjusted according to the shape of the outer hoop, ensuring the high efficiency and stability of the steel cage processing.

[0046] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A support-type welding device for the steel reinforcement cage of a large-span box girder, comprising a workbench, multiple auxiliary frames, and two welding torches, characterized in that: The top of the workbench is equipped with a support welding structure, which includes a fixed frame 1, a mounting frame 2, and a support platform. A pneumatic cylinder 2 and a transmission assembly are installed between the fixed frame 1 and the support platform. The transmission assembly is connected to a jack, and the output end of the jack is fixedly connected to the mounting frame 2. A drive assembly is installed inside the mounting frame 2. The drive assembly is used to drive two welding torches. A clamping assembly and a material pulling assembly are installed on the support platform. Eight round holes are opened on one side of the fixed frame 1, and eight grooves are opened on the outside of the support platform. A power output structure is provided between the support welding structure and the workbench. The transmission assembly includes a drive shaft rotatably mounted on a fixed frame, two take-up frames fixedly connected to the outside of the drive shaft, a mounting shaft rotatably connected to one side of the fixed frame, and two mounting frames fixedly connected inside the fixed frame. The piston end of the pneumatic cylinder is fixedly connected to the support platform. Both take-up frames are fixedly connected to the support platform with pull wires. A torsion spring is fixedly connected between the first mounting shaft and the first drive shaft. One end of the first drive shaft is fixedly connected to the input end of the jack. The piston end of the jack is fixedly connected to the second mounting frame. The jack is fixedly connected to the first fixed frame with a third fixed frame. The clamping assembly includes a vacuum pump fixedly connected to the outside of the support platform, a sliding box slidably connected inside the support platform, a solenoid valve 2 fixedly connected to the outside of the sliding box, a telescopic tube 1, two pneumatic cylinders 4, two telescopic rods 3, and two telescopic tubes 2. The two telescopic tubes 2 are respectively set on both sides of the sliding box. A mounting bracket 5 is fixedly sleeved on the outside of the telescopic tube 2. An air guide pipe is fixedly connected to the end of the telescopic tube 2 away from the sliding box. A suction cup is fixedly connected to one end of the air guide pipe. A mounting bracket 6 is fixedly inserted through one of the suction cups. A retractable liquid storage component is fixedly connected inside the mounting bracket 6. A round rod is fixedly connected to one end of the retractable liquid storage component. The piston ends of the two pneumatic cylinders 4 are fixedly connected to the two mounting brackets 5 respectively. The piston ends of the two telescopic rods 3 are fixedly connected to the two mounting brackets 5 respectively. The telescopic tube 1 is fixedly connected to the air inlet of the vacuum pump. A pneumatic cylinder 3 is fixedly connected inside the support platform. The piston end of the pneumatic cylinder 3 is fixedly connected to the sliding box. The material pulling assembly includes a hydraulic cylinder fixedly embedded at the bottom of the support platform, a fixed frame five fixedly connected to the piston end of the hydraulic cylinder, and two metal frames fixedly connected to the fixed frame five. A mounting shaft two is rotatably connected to the bottom of the metal frame. A rotating plate is fixedly installed on the outside of the mounting shaft two. A limit plate is provided on the side of the rotating plate away from the fixed frame five. The limit plate is fixedly connected to the metal frame. Two elastic plates are fixedly connected between the mounting shaft two and the metal frame.

2. The support-type welding equipment for the steel reinforcement cage of a large-span box girder according to claim 1, characterized in that: The auxiliary frame includes an L-shaped frame and three support rollers rotatably connected to one side of the L-shaped frame. The three support rollers are arranged sequentially from top to bottom. All eight round holes are filled with steel bars. The number of the eight steel bars distributed from top to bottom are three, two, and three respectively. The steel bars are matched with an outer hoop one or an outer hoop two.

3. The support-type welding equipment for the steel reinforcement cage of a large-span box girder according to claim 1, characterized in that: The workbench includes a processing table, two mounting brackets, and a fixed plate. Both the mounting brackets and the fixed plate are fixedly installed on the top of the processing table. The top of the fixed plate is fixed to the fixed bracket. Multiple rotating wheels are rotatably connected inside the mounting bracket, and some of the rotating wheels abut against the mounting bracket.

4. The support-type welding equipment for the steel reinforcement cage of a large-span box girder according to claim 1, characterized in that: The drive assembly includes a gear 1 that is slidably connected inside the mounting bracket 2, a fixed bracket 4 that is fixedly connected inside the gear 1, and two mounting brackets 3 that are fixedly inserted on the fixed bracket 4. Two telescopic rods 1 and a pneumatic cylinder 1 are fixedly connected inside the mounting bracket 3. Two welding torches are slidably installed inside the two mounting brackets 3 respectively. The piston end of the telescopic rod 1 and the piston end of the pneumatic cylinder 1 are fixedly connected to the adjacent welding torches.

5. The support-type welding equipment for the steel reinforcement cage of a large-span box girder according to claim 4, characterized in that: The power output structure includes a gear two meshing with a gear one, a transmission shaft two fixedly inserted inside the gear two, and a brake sleeved on the outside of the transmission shaft two. A connecting frame two is fixedly connected between the brake and the mounting frame two. A connecting frame one is fixedly connected to the side of the mounting frame two away from the connecting frame two. A drive motor and a gearbox are fixedly connected to the bottom of the connecting frame one. The output end of the drive motor is fixedly connected to the input end of the gearbox, and the output end of the gearbox is fixedly connected to the transmission shaft two.

6. The support-type welding equipment for the steel reinforcement cage of a large-span box girder according to claim 1, characterized in that: Both mounting brackets 4 have telescopic rods 2 fixedly connected inside. The pneumatic cylinder 2 is fixedly installed inside one of the mounting brackets 4, and the piston end of the telescopic rod 2 is fixedly connected to the support platform.

7. The support-type welding equipment for the steel reinforcement cage of a large-span box girder according to claim 1, characterized in that: A protective box is fixedly connected to the outside of the first fixed frame. A torsion spring is installed inside the protective box. Three second fixed frames are fixedly connected to the outside of the first fixed frame. A spring-type telescopic rod is fixedly inserted inside each second fixed frame. The piston end of the spring-type telescopic rod is fixedly connected to the second mounting frame.

8. The support-type welding equipment for the steel reinforcement cage of a large-span box girder according to claim 1, characterized in that: The outer wall of the air duct is fixedly connected to the mounting bracket five. A hydraulic sensor is fixedly connected to the outer side of the mounting bracket six. A solenoid valve one is fixedly connected to the air outlet of the air pump.

9. A method for using a support-type welding equipment, applicable to the support-type welding equipment for the steel reinforcement cage of a large-span box girder as described in any one of claims 1-8, characterized in that: The steps include the following: Step 1: Control the operation of the support-type welding structure and adjust the relative distance between the fixed frame and the support platform; Step 2: Pass one end of the steel bar through a round hole and then through the groove at the corresponding position. The steel bar is matched with an outer hoop. Push the outer hoop from the outside of the support platform toward the position of the fixing frame. Place the corresponding number of outer hoops between the fixing frame and the support platform. Step 3: Control the operation of the clamping assembly. When the suction cup presses against the outer clamp and undergoes a certain deformation, the pneumatic cylinder 3 stops working. Step 4: The air pump starts working, and the two suction cups adhere and fix the outer hoop one. Step 5: The pneumatic cylinder three retracts, and the outer clamp one moves between the two welding torches. Then, the pneumatic cylinder three stops working, completing the positioning of the outer clamp one with the welding torch. Step Six: Control the power output structure and drive components to work, control the distance between the welding torch nozzle and the outer hoop, and have the two welding torches work to weld the outer hoop and the reinforcing bar at the contact point. Step 7: The material pulling assembly works, the rotating plate drives the outer hoop one and the eight steel bars to move, the outer hoop one moves away from the welding gun, providing space for the welding and fixing of the next outer hoop one and the eight steel bars; Step 8: Repeat steps 3, 4, 5, 6, and 7.

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