Welding device and welding process for traction beam of railway vehicle

Abstract

The invention relates to the technical field of rail traffic, in particular to a welding device and process for a traction beam of a rail vehicle, comprising a bottom plate, supporting rods are fixedly connected to the periphery of the top end of the bottom plate, a top plate is fixedly connected to the tops of the supporting rods, and an electric cylinder is fixedly connected to the top of the top plate; the output end of the electric air cylinder is fixedly connected with an adjusting plate, the top of the bottom plate is fixedly connected with two sets of symmetrically-arranged sliding rails, and a turnover mechanism used for turning over the traction beam is arranged above the bottom plate. Related parts are driven through a motor B, reverse buffering force is provided through a buffering air cylinder, and it is guaranteed that butt joint is stable and safe; the buffering force can be flexibly adjusted through a series of transmission, deformation of the traction beam caused by butt joint force is prevented, the welding quality is guaranteed, in addition, the motor A drives the component to drive the traction beam body to turn over, front and back welding can be completed through one-time clamping and positioning, working hours are saved, and the welding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rail transportation, and in particular to a welding device and a welding process for a traction beam of a rail vehicle. Background Art

[0002] In the field of rail transit, the traction beam of rail vehicles, as a key component, plays a decisive role in the safe operation and overall performance of the vehicle. It bears the heavy responsibility of transmitting traction, braking force and various complex loads. The quality of the beam is directly related to the stability and reliability of the train operation. Welding is the core link in the manufacturing process of the traction beam, and its technical level directly affects the final quality of the traction beam. At present, the welding technology of the traction beam of rail vehicles has undergone many generations of development, from the early basic manual welding to gradually moving towards automated and intelligent welding.

[0003] However, existing devices often fail to provide stable and adjustable buffering force, which results in deformation of the traction beam due to excessive speed or force during docking, seriously affecting the welding quality and adversely affecting the overall structural strength and stability of the rail vehicle.

[0004] In view of this, research and improvement are carried out on the existing problems, and a welding device and welding process for a traction beam of a rail vehicle are provided, aiming to solve the problems and improve the practical value through this technology. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings existing in the prior art, and a welding device and welding process for a traction beam of a rail vehicle are proposed. The present invention drives related components through motor B, and uses a buffer cylinder to provide a reverse buffer force to ensure smooth and safe docking. The buffer force can be flexibly adjusted through a series of transmissions to prevent the traction beam from deforming due to the docking force and ensure the welding quality. In addition, the motor A driving component drives the traction beam body to flip, and the front and back welding can be completed by clamping and positioning once, saving work time and improving welding efficiency.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a welding device for a traction beam of a rail vehicle, comprising a bottom plate, support rods are fixedly connected to the top of the bottom plate, an adjustment plate is slidably arranged on the support rods, a flipping mechanism for flipping the traction beam is arranged above the bottom plate, a buffer mechanism for driving the traction beam to dock is arranged below the bottom plate, an adjustment mechanism for adjusting the buffering force of the buffer mechanism is arranged on one side of the bottom plate, and a first fixing mechanism and a second fixing mechanism for fixing the traction beam are arranged inside the flipping mechanism; The flip mechanism includes a fixed plate sliding on the upper bottom plate, the interior of the fixed plate penetrates and is rotatably connected with a rotating drum, the second fixing mechanism includes an air cavity opened inside the rotating drum, the air cavity is fixedly connected with an expansion air bag through a pipeline, and one side of the expansion air bag is fixedly connected with a pressure plate; The buffer mechanism includes a mounting plate installed on the inner wall of the bottom plate, the mounting plate is rotatably connected to a rotating shaft inside, a rotating plate is fixedly installed on the top of the rotating shaft, a connecting plate is fixedly connected to the bottom of the fixed plate, a transmission rod is hinged between the rotating plate and the connecting plate, a buffer cylinder is fixedly installed on the bottom of the connecting plate, a piston A is slidably connected inside the buffer cylinder, a moving rod is fixedly connected to one side of the piston A, and a docking plate is fixedly connected to one end of the moving rod; The adjustment mechanism includes a push rod fixedly installed on one side of the top end of the base plate, a mounting seat is installed on the top of the push rod, a gear B is connected to the inside of the mounting seat through rotation, a rack A and a rack B are respectively meshed and connected on both sides of the gear B, a connecting frame is fixedly connected to one side of the rack B, an air cylinder is installed on one side of the base plate, a piston B slides inside the air cylinder, and a sliding rod is fixedly connected to the top of the piston B.

[0007] Preferably: the top of the support rod is fixedly connected to a top plate, the top of the top plate is fixedly connected to an electric cylinder, and the top of the bottom plate is fixedly connected to two groups of symmetrically arranged slide rails.

[0008] Preferably, the adjustment plate slides on the outer wall of the support rod, two groups of symmetrically arranged slide grooves are provided at the bottom of the adjustment plate, electric push rods are fixedly installed inside the slide grooves, and a welding gun slides on the outer wall of the electric push rods.

[0009] Preferably: a motor A is fixedly mounted on one side of the rotating drum, a gear A is fixedly mounted on the output end of the motor A, a gear ring is sleeved on the outer wall of the rotating drum, and symmetrical telescopic rods are fixedly connected on both sides of the rotating drum.

[0010] Preferably, a worm wheel is sleeved on the bottom of the mounting plate, one side of the worm wheel is meshingly connected with a worm, and one end of the worm is mounted with a motor B.

[0011] Preferably: a spring A is arranged inside the buffer cylinder, and the spring A is sleeved on the outer wall of the moving rod.

[0012] Preferably: a connecting frame is fixedly connected to one side of the rack B, and the bottom of the connecting frame is fixedly connected to the top of the sliding rod.

[0013] Preferably: the air cylinder and the buffer cylinder are connected through an air pipe A, and a one-way air intake valve is provided at the connecting port between the air cylinder and the buffer cylinder, and the air pipe A and the buffer cylinder are connected through an air pipe B, and a one-way air intake valve is provided at the connecting port between the air pipe A and the buffer cylinder.

[0014] Preferably: the first fixing mechanism includes a placement plate fixedly connected to the inner wall of the telescopic rod, an air pump is installed at the bottom of the placement plate, a sleeve is installed at the top of the placement plate, a guide rod is slid inside the sleeve, one end of the guide rod passing through the sleeve is fixedly connected to a splint, one end of the splint is installed with multiple groups of springs B, one end of the multiple groups of springs B is fixedly connected to a rubber plate, the air pump and the sleeve are connected by a first connecting pipe, and the air pump and the air cavity are connected by a second connecting pipe.

[0015] Preferably, the welding process of the traction beam of a rail vehicle comprises the following steps: S1: Place the coupler face profile on the surface of the placement plate, then place the side plate between the pressure plates, start the air pump to deliver gas to the sleeve through the first connecting pipe, the gas pushes the guide rod to move outward, the movement of the guide rod drives the clamping plate to move, so that the clamping plate pushes the rubber plate to clamp the two sides of the coupler face profile, the air pump delivers another part of the gas into the air cavity through the second connecting pipe, and the gas then enters the expansion airbag through the pipeline, so that the expansion airbag expands and pushes the pressure plate to move, thereby fixing the side plate; S2: Start motor B to drive the worm to rotate, and then drive the worm wheel to rotate synchronously, so that the rotating plate rotates, and the two sets of connecting plates are driven to move closer to the inner center through the transmission of the transmission rod, so that the two opposite sets of docking plates are in contact, and the docking plate drives the moving rod to push the piston A to move to the inside of the trachea for buffering; S3: Start the electric cylinder, which pushes the adjustment plate upward. The rack A moves upward synchronously to drive the gear B to rotate, and then drives the rack B to move downward. The downward movement of the rack B drives the connecting frame to press the slide rod downward, so that the piston B compresses the gas in the inflatable cylinder. The compressed gas is transported to the buffer cylinder through the gas pipe A; S4: When welding is required on the back of the traction beam body, start motor A to drive gear A to rotate. The rotation of gear A drives the ring gear to rotate. The rotation of the ring gear further drives the telescopic rods on both sides to flip, so that the traction beam body fixed on the surface of the first fixing mechanism and the second fixing mechanism flips.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention drives the worm to rotate through the motor B, drives the rotating plate to rotate through the worm gear meshing transmission, and then moves the two groups of connecting plates inward through the transmission rod, and the two groups of side plates placed on the second fixing mechanism move to both sides of the hook surface profile. During the movement, the docking plates contact, and the moving rod is driven to push the piston A to move inward to the air pipe. The compressed air of the buffer cylinder provides a reverse buffer force, which slows down the docking speed, reduces the docking force, and ensures smooth and safe docking.

[0017] 2. The present invention starts the electric cylinder to push the adjustment plate upward, thereby driving the rack A to rise. Based on the meshing of gear B, rack A and rack B, gear B rotates due to the rise of rack A, driving rack B to move downward, driving the connecting frame to press the slide rod downward, so that piston B compresses the gas in the inflation cylinder and sends it into the buffer cylinder through the air pipe A to increase its pressure. In this way, the buffer force can be flexibly adjusted. For traction beams of different thicknesses, deformation caused by excessive docking force can be prevented by increasing or decreasing the air pressure, thereby ensuring welding stability and quality.

[0018] 3. The present invention drives gear A to rotate through motor A. Since gear A is meshed with the ring gear, the ring gear rotates synchronously with gear A, thereby driving the telescopic rods on both sides to flip, so that the traction beam body fixed on the first fixing mechanism and the second fixing mechanism flips accordingly. Through this process, the welding of the front and back sides of the workpiece can be completed with only one clamping and positioning, which effectively saves working hours and significantly improves welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a welding device and welding process for a rail vehicle traction beam proposed by the present invention; Figure 2 A schematic diagram of the overall structure of the bottom plate of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention; Figure 3 A welding device and welding process for a rail vehicle traction beam proposed by the present invention Figure 2 A is a schematic diagram of the enlarged structure; Figure 4 A welding device and welding process for a rail vehicle traction beam proposed by the present invention Figure 2 Middle B is a schematic diagram of the enlarged structure; Figure 5 A schematic diagram of the bottom structure of a bottom plate of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention; Figure 6 A welding device and welding process for a rail vehicle traction beam proposed by the present invention Figure 5 Middle C is a schematic diagram of the enlarged structure; Figure 7 A schematic structural diagram of the bottom portion of the bottom plate of a welding device and welding process for a rail vehicle traction beam proposed by the present invention; Figure 8 A side structural schematic diagram of a welding device and welding process for a rail vehicle traction beam proposed by the present invention; Fig. 9 A welding device and welding process for a rail vehicle traction beam proposed by the present invention Figure 8 Middle D is a schematic diagram of the enlarged structure; Fig.10A schematic diagram of the bottom structure of an adjustment plate of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention; Fig.11 The present invention provides a schematic structural diagram of a traction beam body of a rail vehicle traction beam welding device and a welding process.

[0020] Legend: 1. Bottom plate; 2. Support rod; 3. Top plate; 4. Electric cylinder; 5. Adjustment plate; 6. Slide rail; 7. Electric push rod; 8. Welding gun; 9. Turning mechanism; 901. Fixed plate; 902. Rotating drum; 903. Motor A; 904. Gear A; 905. Gear ring; 906. Telescopic rod; 10. Buffer mechanism; 1001. Mounting plate; 1002. Rotating shaft; 1003. Worm gear; 1004. Worm; 1005. Motor B; 1006. Rotating plate; 1007. Connecting plate; 1008. Transmission rod; 1009. Buffer cylinder; 1010. Piston A; 1011. Moving rod; 1012. Docking plate; 1013. Spring A; 11. Adjustment mechanism; 1101. push rod; 1102. mounting seat; 1103. gear B; 1104. rack A; 1105. rack B; 1106. connecting frame; 1107. inflator; 1108. piston B; 1109. slide rod; 1110. gas pipe A; 1111. gas pipe B; 12. first fixing mechanism; 1201. placement plate; 1202. air pump; 1203. sleeve; 1204. guide rod; 1205. clamping plate; 1206. spring B; 1207. rubber sheet; 13. second fixing mechanism; 1301. air cavity; 1302. inflatable air bag; 1303. pressure plate; 14. traction beam body; 1401. hook surface profile; 1402. side plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention provides a welding device for a traction beam of a rail vehicle, comprising a bottom plate 1, a support rod 2 is fixedly connected to the top of the bottom plate 1, an adjustment plate 5 is slidably arranged on the support rod 2, a flipping mechanism 9 for flipping the traction beam is arranged above the bottom plate 1, a buffer mechanism 10 for driving the traction beam to dock is arranged below the bottom plate 1, an adjustment mechanism 11 for adjusting the buffering force of the buffer mechanism 10 is arranged on one side of the bottom plate 1, and a first fixing mechanism 12 and a second fixing mechanism 13 for fixing the traction beam are arranged inside the flipping mechanism 9; See also Figure 1 to Figure 2 As shown, the flip mechanism 9 includes a fixed plate 901 sliding on the upper base plate 1, and a rotating drum 902 is rotatably connected to the fixed plate 901. The second fixing mechanism 13 includes an air cavity 1301 opened inside the rotating drum 902, and the air cavity 1301 is fixedly connected to an expansion air bag 1302 through a pipeline, and a pressure plate 1303 is fixedly connected to one side of the expansion air bag 1302; It should be noted that when it is necessary to weld the back side of the traction beam body 14, start the motor A903, which drives the gear A904 to rotate. Due to the meshing relationship between the gear A904 and the gear ring 905, the rotation of the gear A904 will synchronously drive the gear ring 905 to rotate. The rotation of the gear ring 905 further drives the telescopic rods 906 on both sides to flip, thereby realizing the flipping of the traction beam body 14 fixed on the surface of the first fixing mechanism 12 and the second fixing mechanism 13. Through this process, only one clamping and positioning is required to complete the welding of the front and back sides of the workpiece, which greatly saves working hours and improves welding efficiency.

[0023] See also Figures 5 to 7 As shown, the buffer mechanism 10 includes a mounting plate 1001 mounted on the inner wall of the bottom plate 1, the mounting plate 1001 is rotatably connected to a rotating shaft 1002 inside, a rotating plate 1006 is fixedly mounted on the top of the rotating shaft 1002, a connecting plate 1007 is fixedly connected to the bottom of the fixed plate 901, a transmission rod 1008 is hinged between the rotating plate 1006 and the connecting plate 1007, a buffer cylinder 1009 is fixedly mounted on the bottom of the connecting plate 1007, a piston A1010 is slidably connected to the inside of the buffer cylinder 1009, a moving rod 1011 is fixedly connected to one side of the piston A1010, and a docking plate 1012 is fixedly connected to one end of the moving rod 1011; It should be noted that when the hook face profile 1401 and the side plate 1402 need to be butt-welded, the motor B1005 is first started, the motor B1005 drives the worm 1004 to rotate, and the worm 1004 then drives the worm wheel 1003 to rotate synchronously through the meshing transmission with the worm wheel 1003. The rotation of the worm wheel 1003 causes the rotating plate 1006 to rotate synchronously, and then the two sets of connecting plates 1007 are driven to approach the inner center through the transmission action of the transmission rod 1008. At this time, the second fixed The two groups of side plates 1402 on the surface of the mechanism 13 move toward both sides of the coupler surface profile 1401. During the movement, the two groups of docking plates 1012 relative to each other first contact each other, so that the two groups of docking plates 1012 drive the moving rod 1011 to push the piston A1010 to move toward the inside of the trachea. At this time, the compressed air in the buffer cylinder 1009 provides a reverse buffering force, which effectively slows down the docking speed, reduces the docking force, and avoids excessive stress concentration and deformation caused by rigid collision, thereby ensuring a smooth and safe docking process.

[0024] See also Figures 8 to 9 As shown, the adjustment mechanism 11 includes a push rod 1101 fixedly mounted on one side of the top end of the bottom plate 1, a mounting seat 1102 is mounted on the top of the push rod 1101, a gear B1103 is connected to the inside of the mounting seat 1102 by rotation, a rack A1104 and a rack B1105 are respectively meshed and connected on both sides of the gear B1103, a connecting frame 1106 is fixedly connected to one side of the rack B1105, an air cylinder 1107 is mounted on one side of the bottom plate 1, a piston B1108 is slidably mounted inside the air cylinder 1107, and a sliding rod 1109 is fixedly connected to the top of the piston B1108; It should be noted that when it is necessary to weld the traction beam bodies 14 of different thicknesses, the electric cylinder 4 is first started, and the electric cylinder 4 pushes the adjustment plate 5 to move upward. As the adjustment plate 5 moves, the rack A1104 also moves upward synchronously. Due to the meshing relationship between the gear B1103, the rack A1104 and the rack B1105, the rise of the rack A1104 drives the gear B1103 to rotate, and the rotation of the gear B1103 drives the rack B1105 to move downward. The downward movement of the rack B1105 drives the connecting frame 1106 to press the slide bar 1109 downward, and the downward pressure of the slide bar 1109 causes the piston B1106 to move downward. 08 The gas is compressed in the inflation cylinder 1107, and the compressed gas is transported to the buffer cylinder 1009 through the gas pipe A1110, so that the pressure in the buffer cylinder 1009 is increased. By adjusting the air pressure in the buffer cylinder 1009, the size of the buffer force can be flexibly controlled. For a thicker traction beam body 14, the air pressure can be increased to provide a greater buffer force. For a thinner traction beam body 14, the air pressure can be reduced to provide a smaller buffer force. This can effectively prevent deformation caused by excessive docking force due to the inertia of traction beam bodies 14 of different thicknesses, thereby ensuring the stability of the welding process and the welding quality.

[0025] See also Figure 1 As shown, the top of the support rod 2 is fixedly connected to a top plate 3, the top of the top plate 3 is fixedly connected to an electric cylinder 4, and the top of the bottom plate 1 is fixedly connected to two groups of symmetrically arranged slide rails 6.

[0026] See also Fig.11 As shown, the adjustment plate 5 slides on the outer wall of the support rod 2, and two groups of symmetrically arranged slide grooves are opened at the bottom of the adjustment plate 5. An electric push rod 7 is fixedly installed inside the slide groove, and a welding gun 8 slides on the outer wall of the electric push rod 7. The use of the electric push rod 7 realizes the automatic movement and adjustment of the welding gun 8, reduces the link of manual adjustment of the welding gun 8, reduces the labor intensity of the operator, and improves the degree of automation of the welding operation. The welding gun 8 can automatically complete the welding process according to the preset welding trajectory and parameters, which greatly improves the welding efficiency, shortens the welding cycle, and meets the needs of large-scale production.

[0027] See also Figure 2 As shown, a motor A903 is fixedly installed on one side of the rotating drum 902, a gear A904 is fixedly installed on the output end of the motor A903, a gear ring 905 is sleeved on the outer wall of the rotating drum 902, and symmetrical telescopic rods 906 are fixedly connected on both sides of the rotating drum 902.

[0028] See also Figure 7 As shown, a worm gear 1003 is fixedly mounted on the bottom of the mounting plate 1001, a worm 1004 is meshingly connected to one side of the worm gear 1003, a motor B1005 is fixedly mounted on one end of the worm 1004, and the rotation of the motor B1005 is driven by the worm 1004 and the worm gear 1003, so as to continuously and stably drive the rotating plate 1006 to rotate, thereby providing stable power support for the welding process and ensuring the normal operation of the welding device.

[0029] See also Figure 6 As shown, a spring A1013 is provided inside the buffer cylinder 1009, and the spring A1013 is sleeved on the outer wall of the moving rod 1011. During the buffering process, the moving rod 1011 will move with the movement of the piston A1010. When the welding process is completed or needs to be reset, the elastic restoring force of the spring A1013 can push the moving rod 1011 and the piston A1010 back to the initial position, thereby realizing automatic reset.

[0030] See also Fig. 9 As shown, a connecting frame 1106 is fixedly connected to one side of the rack B1105, and the bottom of the connecting frame 1106 is fixedly connected to the top of the sliding rod 1109.

[0031] See also Figure 5As shown, the inflator 1107 is connected to the buffer cylinder 1009 through the air pipe A1110, and a one-way air inlet valve is provided at the connection between the inflator 1107 and the buffer cylinder 1009. The air pipe A1110 is connected to the buffer cylinder 1009 through the air pipe B1111, and a one-way air suction valve is provided at the connection between the air pipe A1110 and the buffer cylinder 1009. When the regulating mechanism 11 is working, the gas in the inflator 1107 is compressed and passes through the air pipe A1110. 10 is delivered to the buffer cylinder 1009, and the one-way air intake valve prevents the gas from flowing in the opposite direction, so as to avoid the gas in the buffer cylinder 1009 from flowing back to the inflation cylinder 1107, thereby ensuring that the air pressure in the buffer cylinder 1009 can be steadily increased, thereby providing a stable buffering force. In addition, when it is necessary to reduce the air pressure in the buffer cylinder 1009, the gas in the buffer cylinder 1009 is allowed to flow back to the air pipe A1110 through the one-way air intake valve, and then return to the inflation cylinder 1107, so as to realize the regulation of the air pressure.

[0032] See also Figures 2 to 3 As shown, the first fixing mechanism 12 includes a placement plate 1201 fixedly connected to the inner wall of the telescopic rod 906, an air pump 1202 is installed at the bottom of the placement plate 1201, a sleeve 1203 is installed on the top of the placement plate 1201, a guide rod 1204 slides inside the sleeve 1203, one end of the guide rod 1204 passing through the sleeve 1203 is fixedly connected to a clamping plate 1205, one end of the clamping plate 1205 is installed with multiple groups of springs B1206, one end of the multiple groups of springs B1206 is fixedly connected to a rubber plate 1207, the air pump 1202 is connected to the sleeve 1203 through a first connecting pipe, and the air pump 1202 is connected to the air cavity 1301 through a second connecting pipe. When the traction beam body 14 needs to be welded, firstly, the coupler surface profile 1401 is placed on the surface of the placement plate 1201, and then the side plate 1402 is placed between the pressure plates 1303, and then the side plate 1402 is connected. Then, the air pump 1202 is started, and the gas generated by the air pump 1202 is transported to the inside of the sleeve 1203 through the first connecting pipe, so that the gas pressure in the sleeve 1203 increases, and the gas pushes the guide rod 1204 to move outward. The movement of the guide rod 1204 drives the clamping plate 1205 to move outward synchronously, so that the clamping plate 1205 pushes the rubber plate 1207 to clamp and fix the two sides of the hook surface profile 1401. At the same time, the air pump 1202 transports another part of the gas to the air cavity 1301 through the second connecting pipe, and the gas in the air cavity 1301 enters the expansion airbag 1302 through the pipeline, so that the expansion airbag 1302 expands and pushes the pressure plate 1303 to move, thereby completing the fixation of the side plate 1402. Through this process, the traction beam body 14 is firmly fixed, which effectively avoids the welding quality problems caused by shaking during welding, and ensures the stability and reliability of welding.

[0033] Working principle: When the traction beam body 14 needs to be welded, first place the hook surface profile 1401 on the surface of the placement plate 1201, then place the side plate 1402 between the pressure plates 1303, and then start the air pump 1202. The gas generated by the air pump 1202 is transported to the inside of the sleeve 1203 through the first connecting pipe, so that the gas pressure in the sleeve 1203 increases, and the gas pushes the guide rod 1204 to move outward. The movement of the guide rod 1204 drives the splint 1205 to move outward synchronously, so that the splint 1205 pushes the rubber The plate 1207 clamps and fixes the two sides of the hook surface profile 1401. At the same time, the air pump 1202 delivers another part of the gas to the air cavity 1301 through the second connecting pipe. The gas in the air cavity 1301 enters the expansion airbag 1302 through the pipeline, so that the expansion airbag 1302 expands and pushes the pressing plate 1303 to move, thereby completing the fixation of the side plate 1402. Through this process, the traction beam body 14 is firmly fixed, effectively avoiding the welding quality problem caused by shaking during the welding process, and ensuring the stability and reliability of the welding; When the hook surface profile 1401 and the side plate 1402 need to be butt-welded, the motor B1005 is first started, and the motor B1005 drives the worm 1004 to rotate. The worm 1004 then drives the worm wheel 1003 to rotate synchronously through meshing transmission with the worm wheel 1003. The rotation of the worm wheel 1003 causes the rotating plate 1006 to rotate synchronously, and then the two sets of connecting plates 1007 are driven to approach the inner center through the transmission action of the transmission rod 1008. At this time, the second fixing mechanism 1 The two groups of side plates 1402 on the surface 3 move toward the two sides of the hook surface profile 1401. During the movement, the two groups of docking plates 1012 opposite to each other first contact each other, so that the two groups of docking plates 1012 drive the moving rod 1011 to push the piston A1010 to move toward the inside of the air pipe. At this time, the compressed air in the buffer cylinder 1009 provides a reverse buffer force, which effectively slows down the docking speed, reduces the docking force, and avoids excessive stress concentration and deformation caused by rigid collision, thereby ensuring a smooth and safe docking process; When it is necessary to weld traction beam bodies 14 of different thicknesses, first start the electric cylinder 4, which pushes the adjustment plate 5 to move upward. As the adjustment plate 5 moves, the rack A1104 also moves upward synchronously. Due to the meshing relationship between the gear B1103, the rack A1104 and the rack B1105, the rise of the rack A1104 drives the gear B1103 to rotate, and the rotation of the gear B1103 drives the rack B1105 to move downward. The downward movement of the rack B1105 drives the connecting frame 1106 to press the slide bar 1109 downward, and the downward pressure of the slide bar 1109 causes the piston B1108 to be filled. The compressed gas in the gas cylinder 1107 is transported to the buffer cylinder 1009 through the gas pipe A1110, so that the pressure in the buffer cylinder 1009 is increased. By adjusting the gas pressure in the buffer cylinder 1009, the magnitude of the buffer force can be flexibly controlled. For a thicker traction beam body 14, the gas pressure can be increased to provide a greater buffer force, and for a thinner traction beam body 14, the gas pressure can be reduced to provide a smaller buffer force, thereby effectively preventing deformation caused by excessive docking force due to the inertia of traction beam bodies 14 of different thicknesses, thereby ensuring the stability of the welding process and the welding quality; When it is necessary to weld the back side of the traction beam body 14, start the motor A903, which drives the gear A904 to rotate. Due to the meshing relationship between the gear A904 and the gear ring 905, the rotation of the gear A904 will synchronously drive the gear ring 905 to rotate. The rotation of the gear ring 905 further drives the telescopic rods 906 on both sides to flip, thereby realizing the flipping of the traction beam body 14 fixed on the surface of the first fixing mechanism 12 and the second fixing mechanism 13. Through this process, only one clamping and positioning is required to complete the welding of the front and back sides of the workpiece, which greatly saves working hours and improves welding efficiency.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding device for a traction beam of a railway vehicle, comprising a bottom plate (1), characterized in that: The top of the bottom plate (1) is fixedly connected to support rods (2) on all sides, and an adjustment plate (5) is slidably mounted on the support rods (2). A flipping mechanism (9) for flipping the traction beam is arranged above the bottom plate (1), and a buffer mechanism (10) for driving the traction beam to dock is arranged below the bottom plate (1). An adjustment mechanism (11) for adjusting the buffering force of the buffer mechanism (10) is arranged on one side of the bottom plate (1), and a first fixing mechanism (12) and a second fixing mechanism (13) for fixing the traction beam are arranged inside the flipping mechanism (9); The turning mechanism (9) comprises a fixing plate (901) sliding on the upper base plate (1), a rotating drum (902) penetrating the interior of the fixing plate (901) and rotatably connected thereto, the second fixing mechanism (13) comprises an air cavity (1301) opened inside the rotating drum (902), the air cavity (1301) being fixedly connected to an expansion air bag (1302) via a pipeline, and a pressure plate (1303) being fixedly connected to one side of the expansion air bag (1302); The buffer mechanism (10) comprises a mounting plate (1001) mounted on the inner wall of the bottom plate (1); the mounting plate (1001) is rotatably connected to a rotating shaft (1002) inside; a rotating plate (1006) is fixedly mounted on the top of the rotating shaft (1002); a connecting plate (1007) is fixedly connected to the bottom of the fixed plate (901); a transmission rod (1008) is hingedly connected between the rotating plate (1006) and the connecting plate (1007); a buffer cylinder (1009) is fixedly mounted on the bottom of the connecting plate (1007); a piston A (1010) is slidably connected to the inside of the buffer cylinder (1009); a moving rod (1011) is fixedly connected to one side of the piston A (1010); and a docking plate (1012) is fixedly connected to one end of the moving rod (1011); The adjustment mechanism (11) comprises a push rod (1101) fixedly mounted on one side of the top end of the base plate (1); a mounting seat (1102) is mounted on the top of the push rod (1101); a gear B (1103) is rotatably connected to the inside of the mounting seat (1102); a rack A (1104) and a rack B (1105) are respectively meshed and connected to the two sides of the gear B (1103); a connecting frame (1106) is fixedly connected to one side of the rack B (1105); an air cylinder (1107) is mounted on one side of the base plate (1); a piston B (1108) is slidably mounted inside the air cylinder (1107); and a sliding rod (1109) is fixedly connected to the top of the piston B (1108).

2. The welding device for a rail vehicle traction beam according to claim 1, characterized in that: The top of the support rod (2) is fixedly connected to a top plate (3), the top of the top plate (3) is fixedly connected to an electric cylinder (4), and the top of the bottom plate (1) is fixedly connected to two groups of symmetrically arranged slide rails (6).

3. The welding device for a rail vehicle traction beam according to claim 1, characterized in that: The adjustment plate (5) slides on the outer wall of the support rod (2); two groups of symmetrically arranged sliding grooves are provided at the bottom of the adjustment plate (5); an electric push rod (7) is fixedly installed inside the sliding groove; and a welding gun (8) slides on the outer wall of the electric push rod (7).

4. The welding device for a traction beam of a railway vehicle according to claim 1, characterized in that: A motor A (903) is fixedly mounted on one side of the rotating drum (902), a gear A (904) is fixedly mounted on the output end of the motor A (903), a gear ring (905) is sleeved on the outer wall of the rotating drum (902), and symmetrical telescopic rods (906) are fixedly connected to both sides of the rotating drum (902).

5. The welding device for a rail vehicle traction beam according to claim 1, characterized in that: A worm wheel (1003) is sleeved on the bottom of the mounting plate (1001), one side of the worm wheel (1003) is meshingly connected with a worm (1004), and one end of the worm (1004) is mounted with a motor B (1005).

6. The welding device for a rail vehicle traction beam according to claim 1, characterized in that: A spring A (1013) is arranged inside the buffer cylinder (1009), and the spring A (1013) is sleeved on the outer wall of the moving rod (1011).

7. The welding device for a traction beam of a railway vehicle according to claim 1, characterized in that: A connecting frame (1106) is fixedly connected to one side of the rack B (1105), and the bottom of the connecting frame (1106) is fixedly connected to the top of the sliding rod (1109).

8. The welding device for a rail vehicle traction beam according to claim 1, characterized in that: The air cylinder (1107) and the buffer cylinder (1009) are connected via an air pipe A (1110), and a one-way air intake valve is provided at a connection port between the air cylinder (1107) and the buffer cylinder (1009). The air pipe A (1110) and the buffer cylinder (1009) are connected via an air pipe B (1111), and a one-way air intake valve is provided at a connection port between the air pipe A (1110) and the buffer cylinder (1009).

9. The welding device for a rail vehicle traction beam according to claim 1, characterized in that: The first fixing mechanism (12) comprises a placement plate (1201) fixedly connected to the inner wall of the telescopic rod (906); an air pump (1202) is installed at the bottom of the placement plate (1201); a sleeve (1203) is installed at the top of the placement plate (1201); a guide rod (1204) slides inside the sleeve (1203); one end of the guide rod (1204) passing through the sleeve (1203) is fixedly connected to a clamp (1205); one end of the clamp (1205) is installed with multiple groups of springs B (1206); one end of the multiple groups of springs B (1206) is fixedly connected to a rubber plate (1207); the air pump (1202) and the sleeve (1203) are connected via a first connecting pipe; and the air pump (1202) and the air cavity (1301) are connected via a second connecting pipe.

10. A welding process for a traction beam of a railway vehicle, applied to a welding device for a traction beam of a railway vehicle as claimed in any one of claims 1 to 9, characterized in that: The welding process comprises the following steps: S1: placing the coupler face profile (1401) on the surface of the placement plate (1201), then placing the side plate (1402) between the pressing plates (1303), starting the air pump (1202) to deliver gas to the sleeve (1203) through the first connecting pipe, the gas pushes the guide rod (1204) to move outward, the movement of the guide rod (1204) drives the clamping plate (1205) to move, so that the clamping plate (1205) pushes the rubber plate (1207) to clamp the two sides of the coupler face profile (1401), the air pump (1202) delivers another part of the gas to the air cavity (1301) through the second connecting pipe, and the gas then enters the expansion airbag (1302) through the pipeline, so that the expansion airbag (1302) expands and pushes the pressing plate (1303) to move, thereby fixing the side plate (1402); S2: starting the motor B (1005) to drive the worm (1004) to rotate, and then driving the worm wheel (1003) to rotate synchronously, so that the rotating plate (1006) rotates, and the two sets of connecting plates (1007) are driven to approach the inner center through the transmission of the transmission rod (1008), so that the two opposite sets of docking plates (1012) are in contact, and the docking plates (1012) drive the moving rod (1011) to push the piston A (1010) to move to the inside of the trachea for buffering; S3: Start the electric cylinder (4), the electric cylinder (4) pushes the adjustment plate (5) to move upward, the rack A (1104) moves upward synchronously to drive the gear B (1103) to rotate, and then drives the rack B (1105) to move downward, the downward movement of the rack B (1105) drives the connecting frame (1106) to press the slide bar (1109) downward, so that the piston B (1108) compresses the gas in the inflation cylinder (1107), and the compressed gas is transported to the buffer cylinder (1009) through the gas transmission pipe A (1110); S4: When welding is required on the back side of the traction beam body (14), the motor A (903) is started to drive the gear A (904) to rotate. The rotation of the gear A (904) drives the gear ring (905) to rotate. The rotation of the gear ring (905) further drives the telescopic rods (906) on both sides to flip, so that the traction beam body (14) fixed on the surface of the first fixing mechanism (12) and the second fixing mechanism (13) is flipped.

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