A welding device and welding process for a traction beam of an orbital vehicle

Abstract

The present invention relates to the technical field of rail transit, and particularly relates to a welding device and a welding process for a traction beam of a rail vehicle, including a bottom plate. Four sides around the top end of the bottom plate are fixedly connected with support rods, the top of the support rods is fixedly connected with a top plate, the top of the top plate is fixedly connected with an electric cylinder, the output end of the electric cylinder is fixedly connected with an adjusting plate, two groups of symmetrically arranged slide rails are fixedly connected to the top of the bottom plate, and a flipping mechanism for flipping the traction beam is arranged above the bottom plate. In the present invention, the motor B drives relevant components, and the buffer cylinder provides a reverse buffer force to ensure smooth and safe butt joint. Moreover, through a series of transmissions, the buffer force can be flexibly adjusted to prevent the traction beam from deforming due to the butt joint force and ensure the welding quality. In addition, the motor A drives the components to drive the traction beam body to flip, and the front and back welding can be completed with one-time clamping and positioning, saving working hours and improving the welding efficiency.

Description

Technical Field

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

[0002] In the field of rail transit, the traction beam of a rail vehicle, as a key component, plays a decisive role in the safe operation and overall performance of the vehicle. It undertakes the important task of transmitting traction force, braking force, and various complex loads. The quality of the traction beam directly affects the stability and reliability of train operation. Welding, as the core link in the manufacturing process of the traction beam, 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 gone through multiple generations of development, gradually advancing from the relatively basic manual welding in the early stage to automated and intelligent welding.

[0003] However, existing devices often cannot provide stable and adjustable buffer force, resulting in deformation of the traction beam due to excessive speed or force during docking, seriously affecting the welding quality, and further having an adverse impact on 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 deficiencies 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 relevant components through Motor B, uses a buffer cylinder to provide reverse buffer force, ensures smooth and safe docking, and can flexibly adjust the buffer force through a series of transmissions to prevent the traction beam from deforming due to docking force and ensure the welding quality. In addition, Motor A drives the components to drive the traction beam body to flip, and the front and back welding can be completed with one-time clamping and positioning, saving working hours and improving the welding efficiency.

[0006] To achieve the above purpose, the present invention adopts the following technical scheme: A welding device for a traction beam of a rail vehicle, including a bottom plate. Four sides of the top of the bottom plate are fixedly connected with support rods, an adjusting plate slides on the support rods. Above the bottom plate, there is a flipping mechanism for flipping the traction beam. Below the bottom plate, there is a buffer mechanism for driving the docking of the traction beam. On one side of the bottom plate, there is an adjusting mechanism for adjusting the buffer force of the buffer mechanism. Inside the flipping mechanism, there is a first fixing mechanism and a second fixing mechanism for fixing the traction beam;

[0007] The flipping mechanism includes a fixing plate that slides on the upper bottom plate. A rotating cylinder is rotatably connected through the interior of the fixing plate. The second fixing mechanism includes an air chamber opened inside the rotating cylinder. The air chamber is fixedly connected through a pipeline to an expansion airbag. One side of the expansion airbag is fixedly connected to a pressing plate;

[0008] The buffer mechanism includes a mounting plate installed on the inner wall of the bottom plate. A rotating shaft is rotatably connected inside the mounting plate. The top end of the rotating shaft is fixedly installed with a rotating plate. The bottom of the fixing plate is fixedly connected to a connecting plate. A transmission rod is hinged between the rotating plate and the connecting plate. The bottom of the connecting plate is fixedly installed with a buffer cylinder. A piston A is slidably connected inside the buffer cylinder. One side of the piston A is fixedly connected to a moving rod. One end of the moving rod is fixedly connected to a docking plate;

[0009] The adjusting mechanism includes a top rod fixedly installed on one side of the top of the bottom plate. A mounting seat is installed on the top of the top rod. A gear B is rotatably connected inside the mounting seat. A rack A and a rack B are respectively meshed and connected on both sides of the gear B. One side of the rack B is fixedly connected to a connecting frame. An air inflation cylinder is installed on one side of the bottom plate. A piston B slides inside the air inflation cylinder. The top of the piston B is fixedly connected to a sliding rod.

[0010] Preferably: The top of the support rod is fixedly connected to a top plate. An electric cylinder is fixedly connected to the top of the top plate. Two groups of symmetrically arranged slide rails are fixedly connected to the top of the bottom plate.

[0011] Preferably: The adjusting plate slides on the outer wall of the support rod. Two groups of symmetrically arranged sliding grooves are opened at the bottom of the adjusting plate. Electric push rods are fixedly installed inside the sliding grooves. A welding gun slides on the outer wall of the electric push rods.

[0012] Preferably: A motor A is fixedly installed on one side of the rotating cylinder. A gear A is fixedly installed at the output end of the motor A. A toothed ring is sleeved on the outer wall of the rotating cylinder. Two symmetrically arranged telescopic rods are fixedly connected to both sides of the rotating cylinder.

[0013] Preferably: A worm gear is sleeved on the bottom of the mounting plate. A worm is meshed and connected to one side of the worm gear. A motor B is installed at one end of the worm.

[0014] Preferably: A spring A is arranged inside the buffer cylinder. The spring A is sleeved on the outer wall of the moving rod.

[0015] Preferably: One side of the rack B is fixedly connected to a connecting frame. The bottom of the connecting frame is fixedly connected to the top of the sliding rod.

[0016] Preferably: The air inflation cylinder is connected to the buffer cylinder through an air delivery pipe A. And a one-way intake valve is arranged at the connection port of the air inflation cylinder and the buffer cylinder. The air delivery pipe A is connected to the buffer cylinder through an air delivery pipe B. And a one-way suction valve is arranged at the connection port of the air delivery pipe A and the buffer cylinder.

[0017] 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, and a sleeve is installed at the top of the placement plate. A guide rod slides inside the sleeve. One end of the guide rod passing through the sleeve is fixedly connected to a clamping plate. A plurality of sets of spring B are installed at one end of the clamping plate, and one end of the plurality of sets of spring B is fixedly connected to a rubber plate. The air pump is connected to the sleeve through a first connecting pipe, and the air pump is connected to the air chamber through a second connecting pipe.

[0018] Preferably, the welding process of a certain track vehicle traction beam according to the above includes the following steps:

[0019] S1: Place the coupler surface profile on the surface of the placement plate, then place the side plate between the pressing plates. Start the air pump, and the gas is transported to the sleeve through the first connecting pipe. The gas pushes the guide rod to move outwards. The movement of the guide rod drives the clamping plate to move, so that the clamping plate pushes the rubber plate to clamp both sides of the coupler surface profile. The air pump transports another part of the gas to the air chamber through the second connecting pipe, and the gas then enters the expansion airbag through the pipeline, causing the expansion airbag to expand and push the pressing plate to move, thereby fixing the side plate.

[0020] S2: Start the motor B to drive the worm to rotate, and then drive the worm wheel to rotate synchronously, so that the rotating plate rotates. Through the transmission of the transmission rod, the two connecting plates move towards the center inward, so that the opposite two docking plates come into contact. The docking plate drives the moving rod to push the piston A to move towards the inside of the air pipe for buffering.

[0021] S3: Start the electric cylinder. The electric cylinder pushes the adjusting plate to move upwards. The rack A moves upwards synchronously to drive the gear B to rotate, and then drives the rack B to move downwards. The downward movement of the rack B drives the connecting frame to press down the sliding rod, so that the piston B compresses the gas in the air charging cylinder. The compressed gas is transported to the buffer cylinder through the air delivery pipe A.

[0022] S4: When welding the back surface of the traction beam body is required, start the motor A to drive the gear A to rotate. The rotation of the gear A drives the toothed ring to rotate, and the rotation of the toothed ring further drives the telescopic rods on both sides to turn, so that the traction beam body fixed on the surfaces of the first fixing mechanism and the second fixing mechanism turns.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] 1. In the present invention, the motor B drives the worm to rotate. Through the meshing transmission of the worm wheel, the rotating plate is driven to rotate. Then, through the transmission rod, the two connecting plates move inwards. The two side plates placed on the second fixing mechanism move towards both sides of the coupler surface profile. During the movement, the docking plates come into contact, driving the moving rod to push the piston A to move towards the inside of the air pipe. The compressed air in the buffer cylinder provides a reverse buffering force, slowing down the docking speed and reducing the docking force, ensuring smooth and safe docking.

[0025] 2. The present invention starts the electric cylinder to push the adjusting plate upward, driving the rack A to rise. Based on the meshing of the gear B with the rack A and the rack B, the gear B rotates due to the rise of the rack A, driving the rack B downward, driving the connecting frame to press down the sliding rod, so that the piston B compresses the gas in the air cylinder, and the compressed gas is sent into the buffer cylinder through the air pipe A, increasing its pressure. In this way, the buffer force can be flexibly adjusted. For traction beams of different thicknesses, by increasing or decreasing the air pressure, excessive docking force can be prevented from causing deformation, ensuring the stability and quality of welding.

[0026] 3. The present invention drives the gear A to rotate through the motor A. Due to the meshing of the gear A with the gear ring, the gear ring rotates synchronously with the gear A, and then drives the two telescopic rods to flip, so that the traction beam body fixed on the first fixing mechanism and the second fixing mechanism flips accordingly. Through this process, only one clamping and positioning can complete the welding of the front and back sides of the workpiece, effectively saving working hours and significantly improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the overall structural schematic diagram of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention;

[0028] Figure 2 is the overall structural schematic diagram of the bottom plate of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention;

[0029] Figure 3 is a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention Figure 2 in which the enlarged schematic diagram of A;

[0030] Figure 4 is a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention Figure 2 in which the enlarged schematic diagram of B;

[0031] Figure 5 is the bottom structural schematic diagram of the bottom plate of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention;

[0032] Figure 6 is a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention Figure 5 in which the enlarged schematic diagram of C;

[0033] Figure 7 is the partial bottom structural schematic diagram of the bottom plate of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention;

[0034] Figure 8 is the side structural schematic diagram of a welding device and welding process for a traction beam of a rail vehicle proposed by the present invention;

[0035] Figure 9 For a welding device and welding process of a traction beam of a rail vehicle proposed by the present invention Figure 8 Schematic enlarged view of D in;

[0036] Figure 10 Schematic bottom structure view of the adjusting plate for a welding device and welding process of a traction beam of a rail vehicle proposed by the present invention;

[0037] Figure 11 Schematic structure view of the traction beam body for a welding device and welding process of a traction beam of a rail vehicle proposed by the present invention.

[0038] Legend description:

[0039] 1. Bottom plate; 2. Support rod; 3. Top plate; 4. Electric cylinder; 5. Adjusting plate; 6. Slide rail; 7. Electric push rod; 8. Welding gun; 9. Flipping mechanism; 901. Fixed plate; 902. Rotating cylinder; 903. Motor A; 904. Gear A; 905. Tooth 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. Adjusting mechanism; 1101. Jack; 1102. Mounting seat; 1103. Gear B; 1104. Rack A; 1105. Rack B; 1106. Connecting frame; 1107. Inflatable cylinder; 1108. Piston B; 1109. Slide rod; 1110. Air delivery pipe A; 1111. Air delivery pipe B; 12. First fixing mechanism; 1201. Placing plate; 1202. Air pump; 1203. Sleeve; 1204. Guide rod; 1205. Clamping plate; 1206. Spring B; 1207. Rubber plate; 13. Second fixing mechanism; 1301. Air cavity; 1302. Expanding air bag; 1303. Pressing plate; 14. Traction beam body; 1401. Coupler surface profile; 1402. Side plate. Specific implementation manners

[0040] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0041] The present invention provides a welding device for a traction beam of a rail vehicle, which includes a bottom plate 1. Four sides of the top end of the bottom plate 1 are fixedly connected with support rods 2. An adjusting plate 5 slides on the support rods 2. Above the bottom plate 1, there is a flipping mechanism 9 for flipping the traction beam. Below the bottom plate 1, there is a buffer mechanism 10 for driving the docking of the traction beam. On one side of the bottom plate 1, there is an adjusting mechanism 11 for adjusting the buffering force of the buffer mechanism 10. Inside the flipping mechanism 9, there are a first fixing mechanism 12 and a second fixing mechanism 13 for fixing the traction beam.

[0042] Refer to Figures 1 to 2 As shown in the figure, the flipping mechanism 9 includes a fixing plate 901 sliding on the upper bottom plate 1. Inside the fixing plate 901, a rotating cylinder 902 is rotatably connected through. The second fixing mechanism 13 includes an air cavity 1301 opened inside the rotating cylinder 902. The air cavity 1301 is fixedly connected with an expansion airbag 1302 through a pipeline. One side of the expansion airbag 1302 is fixedly connected with a pressing plate 1303.

[0043] It should be noted that when welding the back surface of the traction beam body 14, start the motor A903. The motor A903 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, so as to realize the flipping of the traction beam body 14 fixed on the surfaces 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 surfaces of the workpiece, greatly saving working hours and improving the welding efficiency.

[0044] Refer to Figures 5 to 7 As shown in the figure, the buffer mechanism 10 includes a mounting plate 1001 installed on the inner wall of the bottom plate 1. Inside the mounting plate 1001, a rotating shaft 1002 is rotatably connected. At the top end of the rotating shaft 1002, a rotating plate 1006 is fixedly installed. The bottom of the fixing plate 901 is fixedly connected with a connecting plate 1007. A transmission rod 1008 is hinged between the rotating plate 1006 and the connecting plate 1007. At the bottom of the connecting plate 1007, a buffer cylinder 1009 is fixedly installed. Inside the buffer cylinder 1009, a piston A1010 slides. One side of the piston A1010 is fixedly connected with a moving rod 1011. One end of the moving rod 1011 is fixedly connected with a docking plate 1012.

[0045] 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.

[0046] 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;

[0047] 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.

[0048] Refer to Figure 1 As shown, a top plate 3 is fixedly connected to the top of the support rod 2, an electric cylinder 4 is fixedly connected to the top of the top plate 3, and two groups of symmetrically arranged slide rails 6 are fixedly connected to the top of the bottom plate 1.

[0049] Refer to Figure 11 As shown, the adjusting plate 5 slides on the outer wall of the support rod 2. Two groups of symmetrically arranged chutes are opened at the bottom of the adjusting plate 5. An electric push rod 7 is fixedly installed inside the chute. 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 manual adjustment link of the welding gun 8, reduces the labor intensity of the operator, and improves the automation degree of the welding operation. The welding gun 8 can automatically complete the welding process according to the preset welding trajectory and parameters, greatly improving the welding efficiency, shortening the welding cycle, and meeting the needs of large-scale production.

[0050] Refer to Figure 2 As shown, a motor A903 is fixedly installed on one side of the rotating cylinder 902. A gear A904 is fixedly installed at the output end of the motor A903. A toothed ring 905 is sleeved on the outer wall of the rotating cylinder 902. Two symmetrically arranged telescopic rods 906 are fixedly connected to both sides of the rotating cylinder 902.

[0051] Refer to Figure 7 As shown, a worm gear 1003 is fixedly sleeved at the bottom of the mounting plate 1001. A worm 1004 is meshed with one side of the worm gear 1003. A motor B1005 is fixedly installed at one end of the worm 1004. The rotation of the motor B1005 can continuously and stably drive the rotating plate 1006 to rotate through the transmission of the worm 1004 and the worm gear 1003, providing stable power support for the welding process and ensuring the normal operation of the welding device.

[0052] Refer to Figure 6 As shown, a spring A1013 is arranged inside the buffer cylinder 1009. The spring A1013 is sleeved on the outer wall of the moving rod 1011. During the buffering process, the moving rod 1011 will move along with the movement of the piston A1010. When the welding process ends 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 to achieve automatic reset.

[0053] Refer to Figure 9 As shown, a connecting frame 1106 is fixedly connected to one side of the rack B1105. The bottom of the connecting frame 1106 is fixedly connected to the top of the sliding rod 1109.

[0054] Refer to Figure 5As shown in the figure, the air pump 1107 is connected to the buffer cylinder 1009 through the air delivery pipe A1110, and a one-way intake valve is provided at the connection port between the air pump 1107 and the buffer cylinder 1009. The air delivery pipe A1110 is connected to the buffer cylinder 1009 through the air delivery pipe B1111, and a one-way suction valve is provided at the connection port between the air delivery pipe A1110 and the buffer cylinder 1009. When the adjusting mechanism 11 works, the gas in the air pump 1107 is compressed and delivered to the buffer cylinder 1009 through the air delivery pipe A1110. The one-way intake valve prevents the reverse flow of gas, avoiding the gas in the buffer cylinder 1009 from flowing back to the air pump 1107, ensuring that the air pressure in the buffer cylinder 1009 can increase stably, thereby providing a stable buffer force. In addition, when it is necessary to reduce the air pressure in the buffer cylinder 1009, the gas in the buffer cylinder 1009 flows back to the air delivery pipe A1110 through the one-way suction valve, and then returns to the air pump 1107 to realize the adjustment of the air pressure.

[0055] Refer to Figures 2 to 3 As shown in the figure, 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, and 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 clamping plate 1205. A plurality of groups of springs B1206 are installed at one end of the clamping plate 1205, and one end of the plurality of 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 chamber 1301 through a second connecting pipe. When welding the traction beam body 14, first place the coupler surface profile 1401 on the surface of the placement plate 1201, then place the side plate 1402 between the pressing plates 1303, and then start the air pump 1202. The gas generated by the air pump 1202 is delivered to the inside of the sleeve 1203 through the first connecting pipe, increasing the gas pressure inside the sleeve 1203. The gas pushes the guide rod 1204 to move outward, and 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 both sides of the coupler surface profile 1401. At the same time, the air pump 1202 delivers another part of the gas to the air chamber 1301 through the second connecting pipe. The gas in the air chamber 1301 enters the expansion airbag 1302 through the pipeline, causing the expansion airbag 1302 to expand and push 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 welding quality problems caused by shaking during the welding process, and ensuring the stability and reliability of welding.

[0056] Working principle: When welding the traction beam body 14, first place the coupler face profile 1401 on the surface of the placement plate 1201, then place the side plate 1402 between the pressing plates 1303, and then start the air pump 1202. The gas generated by the air pump 1202 is transported into the inside of the sleeve 1203 through the first connecting pipe, increasing the gas pressure inside the sleeve 1203. The gas pushes the guide rod 1204 to move outwards, and the movement of the guide rod 1204 drives the clamping plate 1205 to move outwards synchronously, so that the clamping plate 1205 pushes the rubber plate 1207 to clamp and fix both sides of the coupler face profile 1401. At the same time, the air pump 1202 transports another part of the gas into the air chamber 1301 through the second connecting pipe, and the gas in the air chamber 1301 enters the expansion airbag 1302 through the pipeline, causing the expansion airbag 1302 to expand and push the pressing plate 1303 to move, thus completing the fixation of the side plate 1402. Through this process, the traction beam body 14 is firmly fixed, effectively avoiding welding quality problems caused by shaking during the welding process, and ensuring the stability and reliability of welding;

[0057] When butt welding the coupler face profile 1401 and the side plate 1402 is required, first start the motor B1005. 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 through the transmission of the transmission rod 1008, drives the two groups of connecting plates 1007 to move towards the center inward. At this time, the two groups of side plates 1402 placed on the surface of the second fixing mechanism 13 move towards both sides of the coupler face profile 1401. During the movement, the two opposite docking plates 1012 first come into contact, causing the two groups of docking plates 1012 to drive the moving rod 1011 to push the piston A1010 to move towards the inside of the air pipe. At this time, the compressed air in the buffer cylinder 1009 provides a reverse buffering force at this time, effectively slowing down the docking speed, reducing the docking force, and avoiding excessive stress concentration and deformation caused by rigid collision, so as to ensure the smooth and safe docking process;

[0058] When it is necessary to weld the drawbar body 14 with different thicknesses, first start the electric cylinder 4. The electric cylinder 4 pushes the adjusting plate 5 to move upward. As the adjusting plate 5 moves, the rack A1104 also moves upward synchronously. Due to the meshing relationship between the gear B1103 and the rack A1104 and the rack B1105, the upward movement of the rack A1104 drives the gear B1103 to rotate. The rotation of the gear B1103 further drives the rack B1105 to move downward. The downward movement of the rack B1105 drives the connecting frame 1106 to press down the sliding rod 1109. The downward pressure of the sliding rod 1109 causes the piston B1108 to compress the gas in the air cylinder 1107. The compressed gas is delivered to the buffer cylinder 1009 through the air pipe A1110, increasing the pressure in the buffer cylinder 1009. By adjusting the air pressure in the buffer cylinder 1009, the magnitude of the buffer force can be flexibly controlled. For the thicker drawbar body 14, the air pressure can be increased to provide a greater buffer force. For the thinner drawbar body 14, the air pressure can be decreased to provide a smaller buffer force. Thus, it can effectively prevent deformation caused by excessive docking force due to the inertia of the drawbar body 14 with different thicknesses, ensuring the stability of the welding process and the welding quality.

[0059] When it is necessary to weld the back surface of the drawbar body 14, start the motor A903. The motor A903 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 drive the gear ring 905 to rotate synchronously. The rotation of the gear ring 905 further drives the telescopic rods 906 on both sides to flip, thus realizing the flipping of the drawbar body 14 fixed on the surfaces 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 surfaces of the workpiece, greatly saving working hours and improving the welding efficiency.

[0060] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall 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 with 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) is fixedly connected to an expansion air bag (1302) via a pipeline, and a pressure plate (1303) is 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 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 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 connected to the inside of the mounting seat (1102) by rotation; a rack A (1104) and a rack B (1105) are respectively meshed and connected on both 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); a sliding rod (1109) is fixedly connected to the top of the piston B (1108); 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).

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 adjusting plate (5) slides on the outer wall of the supporting rod (2); two groups of symmetrically arranged sliding grooves are provided at the bottom of the adjusting 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: 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 the connection 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 the connection between the air pipe A (1110) and the buffer cylinder (1009).

8. The welding device for a rail vehicle traction beam according to claim 1, characterized in that: 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 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.

9. 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 8, 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 pressure 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 pressure 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 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 ring gear (905) to rotate. The rotation of the ring gear (905) further drives the telescopic rods (906) on both sides to flip, thereby flipping the traction beam body (14) fixed on the surface of the first fixing mechanism (12) and the second fixing mechanism (13).

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