Rear axle pipe ring welding device

Abstract

The invention discloses a rear axle pipe ring welding device, and belongs to the technical field of welding equipment, the rear axle pipe ring welding device comprises a machine body, a fixing assembly is installed on the machine body, the rear axle pipe ring welding device further comprises a rotating assembly, the rotating assembly comprises a rotating disc rotating on the machine body, and a supporting frame is fixed to the side wall of the rotating disc; according to the automatic welding device, through movement of the sliding disc and linkage of the rotating ring and the pull rope, the sliding block and the welding gun are driven to conduct radial feeding, and the linkage mechanism ensures that the welding gun can be accurately close to the joint position of a flange plate and a bridge pipe; and accurate positioning is achieved for follow-up welding. When the welding gun is close to the joint, the abutting wall makes contact with the guide wall so that the angle adjusting block can drive the welding gun to deflect, it is guaranteed that the welding gun is aligned with the welding seam according to the preset dip angle, self-adaption to the welding track is achieved, welding defects caused by angle deviation of the welding gun are effectively avoided, and therefore the consistency and reliability of welding quality are guaranteed.

Description

Technical Field

[0001] The present invention relates to a ring welding device for a rear axle tube, belonging to the technical field of welding equipment. Background Art

[0002] In the manufacturing field of welding equipment such as automatic and semi-automatic arc welding machines and plasma arc welding machines, the requirements for welding accuracy and quality are increasing day by day. Traditional welding equipment often faces many problems when welding complex structures such as flange plates and rear axle tubes. On the one hand, in the welding positioning link, there is a lack of an accurate and effective radial feeding mechanism, making it difficult to ensure that the welding torch can accurately approach the joint position of the flange plate and the tube, resulting in inaccurate positioning of the welding starting point, affecting the subsequent welding quality, and prone to problems such as welding position deviation and poor weld formation. On the other hand, during the welding process, the adjustment of the welding torch angle mostly relies on manual operation or simple mechanical fixation, making it difficult to achieve an adaptive welding trajectory. The deviation of the welding torch angle is extremely likely to cause welding defects such as incomplete penetration and undercut, making it difficult to guarantee the consistency and reliability of the welding quality, with a low qualified rate of welded products, affecting the welding efficiency and product quality. Therefore, a ring welding device for a rear axle tube is proposed. Summary of the Invention

[0003] Aiming at the above-mentioned existing technical deficiencies, the purpose of the present invention is to provide a ring welding device for a rear axle tube to ensure that the welding torch is aligned with the weld seam at a preset inclination angle and achieve an adaptive welding trajectory.

[0004] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a ring welding device for a rear axle tube, including a machine body, on which a fixing component for fixing a flange plate and a clamping component for clamping the rear axle tube are installed. The center lines of the flange plate and the rear axle tube clamped by the fixing component and the clamping component coincide. It further includes a rotating component, which includes a turntable rotatably arranged on the machine body. The axis of the turntable coincides with the center line of the flange plate, and a support frame is fixed on the side wall of the turntable;

[0005] Among them, a slideway is arranged in the support frame along the radial direction of the turntable. A sliding block is arranged in the slideway, and a welding torch is arranged on the sliding block. When the sliding block drives the welding torch to slide in the slideway close to the connection position of the flange plate and the rear axle tube, during the rotation of the turntable, the welding torch can perform ring welding work on the connection position.

[0006] Preferably, a fixed sleeve is rotatably connected to the inside of the sliding block through two rotating columns, and the welding torch is fixed in the axial through hole of the fixed sleeve;

[0007] An extension rod is fixedly connected to the sliding block, and a stop block is fixedly connected to the extension rod. A second spring for pulling the welding torch towards the stop block is connected between the extension rod and the welding torch. When the welding torch abuts against the stop block, its center line is parallel to the sliding direction of the sliding block;

[0008] A slot is provided in any one of the rotating columns. A plug rod is inserted into the slot. The end of the plug rod extends outside the slot and is fixedly connected with an angle adjusting block. An abutting wall with an acute angle with the center line of the welding torch is arranged on the angle adjusting block;

[0009] Among them, an arc-shaped guiding wall is provided on the support frame. When the sliding block makes a radial feed, the abutting wall contacts the guiding wall, forcing the angle adjusting block to drive the welding torch to deflect, so that the spraying direction of the welding torch is aligned with the weld seam.

[0010] Preferably, the plug rod is slidably connected in the slot. A connecting bolt is arranged inside the plug rod. The threaded end of the connecting bolt penetrates through the plug rod and is meshed and connected to the rotating column. A third spring for inserting the plug rod into the slot is sleeved on the connecting bolt;

[0011] Among them, a positioning block is fixedly connected to the side wall of the slot, and a plurality of positioning grooves for cooperating with the positioning block are circumferentially arranged at the inner end of the plug rod.

[0012] Preferably, angle scale lines are arranged on the sliding block around the circumference of the plug rod, and a pointer line is arranged on the angle adjusting block.

[0013] Preferably, the fixing assembly includes:

[0014] A fixed column, which is fixedly connected to the side wall of the machine body. The fixed column is coaxially arranged with the turntable. A placement groove for placing the flange is provided on the end face of the fixed column;

[0015] Two clamping rods, which are symmetrically and rotatably connected to both sides of the fixed column. Clamping heads for clamping the flange in the placement groove are fixedly connected to the ends of the two clamping rods;

[0016] A sliding disk, which is slidably connected to the fixed column through a first oil cylinder;

[0017] Among them, a chute is provided on the side wall of the clamping rod. The chute includes a loosening clamping path, a clamping path and an inclined path. The loosening clamping path and the clamping path are connected through the inclined path; A toggle pin is fixed on the sliding disk, and the toggle pin is slidably connected in the loosening clamping path, the clamping path and the inclined path of the chute.

[0018] Preferably, the clamping head includes:

[0019] A fixing plate, which is fixed on the clamping rod;

[0020] A movable plate, which is arranged on the fixing plate;

[0021] Among them, a plurality of uniformly distributed elastic sheets are arranged between the fixed plate and the movable plate, and one end of the elastic sheet close to the movable plate is inclined towards the bottom of the placement groove.

[0022] Preferably, a rubber pad for contacting the side wall of the flange is fixedly connected to the side wall of the movable plate, and the rubber pad gradually thickens from one end close to the bottom of the placement groove towards one end close to the mouth of the placement groove.

[0023] Preferably, a rotating ring is rotatably connected to the sliding disc, a pull rod is fixedly connected to the rotating ring, a pull rope is connected to the pull rod, and one end of the pull rope away from the pull rod is connected to the sliding block;

[0024] Among them, a guide wheel for guiding the pull rope is rotatably arranged on the side wall of the guide wall.

[0025] Preferably, a convex block is fixedly connected to the rotating ring, a counterbore is formed on the support frame, and the convex block is arranged in the counterbore;

[0026] When the sliding disc drives the rotating ring to slide, the convex block slides in the counterbore.

[0027] When the turntable drives the support frame to rotate, under the cooperation of the convex block and the counterbore, the rotating ring rotates synchronously with the turntable and the support frame.

[0028] Preferably, the clamping assembly includes two clamping seats, the two clamping seats are oppositely arranged on the machine body through the second oil cylinder, and a V-shaped clamping groove for clamping the rear axle pipe is arranged on the opposite surface of the two clamping seats.

[0029] Compared with the prior art:

[0030] 1. In the present invention, through the movement of the sliding disc, the rotating ring and the pull rope are linked to drive the sliding block and the welding torch to perform radial feeding. This linkage mechanism ensures that the welding torch can accurately approach the joint position between the flange and the pipe, providing accurate positioning for subsequent welding. When the welding torch approaches the joint, the contact between the abutting wall and the guide wall causes the angle-adjusting block to drive the welding torch to deflect, ensuring that the welding torch is aligned with the weld seam at a preset inclination angle, realizing an adaptive welding trajectory, effectively avoiding welding defects caused by the angle deviation of the welding torch, such as incomplete penetration and undercut, thus ensuring the consistency and reliability of the welding quality and greatly improving the qualified rate of the welded product.

[0031] 2. In the present invention, the starting motor drives the turntable to rotate uniformly, and the support frame drives the sliding block and the welding torch to perform circular motion around the joint, achieving the continuity and stability of welding and avoiding welding defects caused by uneven welding speed. At the same time, the cooperation between the convex block and the sunk groove of the support frame enables the rotating ring to rotate synchronously with the turntable, ensuring the stable tension state of the pull rope, further guaranteeing the stable operation of the sliding block and the welding torch during welding, reducing welding quality problems caused by loose mechanical components or uncoordinated movements, and providing a strong guarantee for welding operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the state when the present invention clamps the rear axle tube.

[0033] Figure 2 It is a schematic structural diagram of the present invention.

[0034] Figure 3 It is a top view of the present invention.

[0035] Figure 4 For the present invention Figure 3 Enlarged view of part A.

[0036] Figure 5 It is a schematic diagram of the change in the angle of the welding torch of the present invention.

[0037] Figure 6 It is a schematic structural diagram of the fixed column, turntable and support frame of the present invention.

[0038] Figure 7 It is an exploded view of the support frame, sliding block and welding torch of the present invention.

[0039] Figure 8 It is an exploded sectional view of the sliding block, welding torch, fixed sleeve and insertion rod of the present invention.

[0040] Figure 9 It is a sectional view of the sliding block, welding torch, fixed sleeve and insertion rod of the present invention.

[0041] Figure 10 It is a schematic structural diagram of the fixing component of the present invention.

[0042] Figure 11 It is an exploded view of the fixed column, clamping rod and sliding disc of the present invention.

[0043] Figure 12 It is a schematic structural diagram of the clamping rod of the present invention.

[0044] Figure 13 It is a sectional view of the fixed column, clamping rod and sliding disc of the present invention.

[0045] Figure 14 It is an exploded view of the fixed column, turntable, support frame and rotating ring of the present invention.

[0046] In the figure:

[0047] 1. Body

[0048] 2. Fixing component

[0049] 201. Fixed column, 202. Placing groove, 203. Clamping rod, 204. Clamping head, 2041. Fixed plate, 2042. Movable plate, 2043. Elastic sheet, 2044. Rubber pad, 205. Sliding disk, 206. Slide groove, 2061. Loose clamping path, 2062. Clamping path, 2063. Inclined path, 207. Oil cylinder 1, 208. Poking pin

[0050] 3. Clamping component, 301. Clamping seat, 302. Oil cylinder 2, 303. V-shaped clamping groove

[0051] 4. Rotating component

[0052] 401. Turntable, 402. Support frame, 4021. Slideway, 4022. Sunk groove, 403. Motor, 404. Guide rod, 405. Spring 1

[0053] 5. Sliding block, 501. Ear block, 502. Extension rod, 503. Stop block, 504. Spring 2

[0054] 6. Welding torch

[0055] 7. Fixed sleeve, 701. Rotating column, 702. Insertion slot, 703. Positioning block

[0056] 8. Insertion rod, 801. Angle adjusting block, 802. Opposing wall, 803. Positioning groove, 9. Guide wall, 10. Connecting bolt, 11. Spring 3

[0057] 12. Swivel ring, 1201. Convex block, 13. Pull rod, 14. Pull rope, 15. Guide pulley

[0058] 16. Angle scale line, 17. Pointer line Detailed implementation manner

[0059] The following uses specific embodiments to illustrate the present invention, but it is not a limitation to the invention

[0060] Embodiment 1

[0061] As Figures 1 - 14As shown in the figure, in this embodiment, a rear axle tube ring welding device is provided, which includes a machine body 1. A fixing component 2 for fixing a flange and a clamping component 3 for clamping a rear axle tube are installed on the machine body 1. The center lines of the flange clamped by the fixing component 2 and the clamping component 3 and the rear axle tube coincide. It further includes a rotating component 4. The rotating component 4 includes a turntable 401 rotatably arranged on the machine body 1, and the axis of rotation of the turntable 401 coincides with the center line of the flange. Combined with Figure 1 , Figure 2 and Figure 6 shown, a motor 403 is fixed on the machine body 1. The output shaft of the motor 403 is connected to the turntable 401 through gear meshing. When the motor 403 is started, the output shaft of the motor 403 can drive the turntable 401 to rotate. A support frame 402 is fixed on the side wall of the turntable 401;

[0062] Among them, a slideway 4021 is arranged in the support frame 402 along the radial direction of the turntable 401. A sliding block 5 is arranged in the slideway 4021, and a welding torch 6 is arranged on the sliding block 5. When the sliding block 5 drives the welding torch 6 to slide in the slideway 4021 close to the connection position of the flange and the rear axle tube, during the rotation of the turntable 401, the welding torch 6 can perform ring welding work on the connection position.

[0063] Guide rods 404 are fixed on both sides of the slideway 4021 on the support frame 402. An ear block 501 is fixed on each side of the sliding block 5. The two ear blocks 501 are respectively slidably sleeved on the guide rods 404 on the same side, and a first spring 405 is sleeved on the guide rods 404. When the sliding block 5 drives the welding torch 6 to slide close to the connection position of the flange and the rear axle tube, the ear block 501 compresses the first spring 405 and slides. After the welding is completed, the first spring 405 elastically presses the sliding block 5 and the welding torch 6 in the reverse direction for resetting.

[0064] The clamping component 3 includes two clamping seats 301. The two clamping seats 301 are oppositely arranged on the machine body 1 through an oil cylinder 302. A V-shaped clamping groove 303 for clamping the rear axle tube is arranged on the opposite surfaces of the two clamping seats 301.

[0065] Combined with Figures 1 - 3 shown, each of the two clamping seats 301 corresponds to an oil cylinder 302. The two oil cylinders 302 are symmetrically installed on the machine body 1. The two clamping seats 301 are respectively connected to the output shafts of the two oil cylinders 302. When the oil cylinder 302 operates, the output shaft of the oil cylinder 302 can drive the clamping seat 301 to perform operations of clamping and releasing the rear axle tube.

[0066] Clamping of the rear axle tube:

[0067] Place the rear axle tube between the V-shaped clamping grooves 303 of the two clamping seats 301.

[0068] Start the symmetrically arranged oil cylinder two 302, push the two clamping seats 301 to move towards each other, and utilize the wedge-shaped structure of the V-shaped clamping groove 303 to achieve rapid centering and stable clamping of the bridge pipe.

[0069] Embodiment two

[0070] As Figures 5 - 9 shown, on the basis of Embodiment one, in this embodiment, in order to enable the welding angle of the welding torch 6 to be automatically rotated and positioned, a fixed sleeve 7 is rotatably connected in the sliding block 5 through two rotating columns 701, as Figures 6 - 9 shown, the two rotating columns 701 are rotatably connected to the side wall of the sliding block 5, and the axis of rotation of the rotating column 701 is perpendicular to the sliding direction of the sliding block 5. The welding torch 6 is fixed in the axial through hole of the fixed sleeve 7;

[0071] An extension rod 502 is fixedly connected to the sliding block 5, a stop block 503 is fixedly connected to the extension rod 502, and a second spring 504 for pulling the welding torch 6 towards the stop block 503 is connected between the extension rod 502 and the welding torch 6. When the welding torch 6 abuts against the stop block 503, its center line is parallel to the sliding direction of the sliding block 5;

[0072] A slot 702 is formed in any one of the rotating columns 701, a plug rod 8 is inserted into the slot 702, the end of the plug rod 8 extends outside the slot 702 and is fixedly connected with an angle adjusting block 801, and an abutting wall 802 with an acute angle with the center line of the welding torch 6 is arranged on the angle adjusting block 801;

[0073] Among them, an arc-shaped guiding wall 9 is arranged on the support frame 402. When the sliding block 5 feeds radially, the abutting wall 802 contacts the guiding wall 9, forcing the angle adjusting block 801 to drive the welding torch 6 to deflect, so that the spraying direction of the welding torch 6 is aligned with the weld seam.

[0074] As Figures 6 - 9 shown, in order to be able to adjust the welding angle of the welding torch 6, the plug rod 8 is slidably connected in the slot 702, a connecting bolt 10 is arranged inside the plug rod 8, the threaded end of the connecting bolt 10 penetrates through the plug rod 8 and is meshed and connected to the rotating column 701, and a third spring 11 for inserting the plug rod 8 into the slot 702 is sleeved on the connecting bolt 10;

[0075] Among them, a positioning block 703 is fixedly connected to the side wall of the slot 702, and a plurality of positioning grooves 803 for cooperating with the positioning block 703 are circumferentially arranged at the inner end of the plug rod 8;

[0076] When the insertion rod 8 is installed in the slot 702 by using the connecting bolt 10 and the third spring 11, the positioning block 703 is inserted into the corresponding positioning groove 803. At this time, under the cooperation of the positioning block 703 and the positioning groove 803, the angle between the insertion rod 8 and the rotating column 701 is limited, thereby limiting the angle between the abutting wall 802 and the center line of the welding torch 6. In this way, when the angle adjustment block 801 rotates under the cooperation of the abutting wall 802 and the guiding wall 9, the insertion rod 8, the rotating column 701, the fixed sleeve 7 and the welding torch 6 can rotate synchronously on the sliding block 5;

[0077] When the insertion rod 8 is pulled upward, the insertion rod 8 slides upward against the elastic force of the third spring 11. At this time, the positioning block 703 is separated from the positioning groove 803. In this state, the insertion rod 8 can rotate in the slot 702, thereby adjusting the angle between the abutting wall 802 and the center line of the welding torch 6, that is, adjusting the welding angle of the welding torch 6. After determining that the welding angle is adjusted, release the insertion rod 8. At this time, the third spring 11 elastically presses the insertion rod 8, and the positioning block 703 can be inserted into the corresponding positioning groove 803. The contact between the abutting wall 802 and the guiding wall 9 will automatically maintain this angle during subsequent welding, thereby realizing the adjustment of the welding angle of the welding torch 6.

[0078] Angle scale lines 16 are circumferentially arranged on the sliding block 5 around the insertion rod 8, and a pointer line 17 is provided on the angle adjustment block 801. By aligning the pointer line 17 with the angle scale lines 16 on the sliding block 5, the operator can accurately adjust the welding angle of the welding torch 6.

[0079] Embodiment III

[0080] As Figure 1 、 Figure 2 And Figures 10 - 13 shown, on the basis of the above embodiment, in this embodiment, in order to fix the flange, the fixing assembly 2 includes a fixed column 201, the fixed column 201 is fixedly connected to the side wall of the machine body 1, the fixed column 201 is coaxially arranged with the turntable 401, and a placement groove 202 for placing the flange is opened on the end face of the fixed column 201; two clamping rods 203 are symmetrically and rotatably connected to both sides of the fixed column 201, and clamping heads 204 for clamping the flange in the placement groove 202 are fixedly connected to the ends of the two clamping rods 203; a sliding disk 205 is slidably connected to the fixed column 201 through a first oil cylinder 207. As Figures 10 - 11 shown, the first oil cylinder 207 is fixedly installed on the fixed column 201, the output shaft of the first oil cylinder 207 is connected to the sliding disk 205, and when the first oil cylinder 207 is started, the output shaft of the first oil cylinder 207 drives the sliding disk 205 to reciprocate along the axis of the fixed column 201;

[0081] Among them, a chute 206 is formed in the side wall of the clamping rod 203. The chute 206 includes a loose clamping path 2061, a clamping path 2062 and an inclined path 2063. The loose clamping path 2061 and the clamping path 2062 are connected by the inclined path 2063. A toggle pin 208 is fixed on the sliding disk 205. The toggle pin 208 is slidably connected in the loose clamping path 2061, the clamping path 2062 and the inclined path 2063 of the chute 206.

[0082] As Figure 13 shown, the sliding disk 205 slides to one end close to the placement groove 202. At this time, the toggle pin 208 is inside the loose clamping path 2061, and the clamping heads 204 of the two clamping rods 203 are in an open state. In this state, a flange can be placed into the placement groove 202 or the flange in the placement groove 202 can be taken out.

[0083] When it is necessary to clamp the flange in the placement groove 202, the first oil cylinder 207 is started. The first oil cylinder 207 drives the sliding disk 205 to slide away from the placement groove 202, causing the toggle pin 208 to slide from the loose clamping path 2061 and through the inclined path 2063 to the clamping path 2062. During this process, the clamping rod 203 rotates, so that the clamping head 204 clamps the flange in the placement groove 202.

[0084] After the toggle pin 208 slides into the inside of the clamping path 2062, the clamping rod 203 undergoes a clamping rotation. In this state, the clamping path 2062 is parallel to the axis of the fixed column 201. In this way, no matter where the toggle pin 208 is located in the clamping path 2062, the clamping force of the clamping head 204 on the flange remains unchanged.

[0085] In addition, as Figures 12 - 14 shown, the clamping head 204 includes a fixed plate 2041 and a movable plate 2042. The fixed plate 2041 is fixed on the clamping rod 203. The movable plate 2042 is arranged on the fixed plate 2041. Among them, a plurality of uniformly distributed elastic sheets 2043 are arranged between the fixed plate 2041 and the movable plate 2042. One end of the elastic sheet 2043 close to the movable plate 2042 is inclined towards the bottom of the placement groove 202.

[0086] A rubber pad 2044 for contacting the side wall of the flange is fixedly connected to the side wall of the movable plate 2042. The rubber pad 2044 gradually thickens from the end close to the bottom of the placement groove 202 towards the end close to the mouth of the placement groove 202, preventing the flange from loosening in the placement groove 202.

[0087] Flange fixing:

[0088] Place the flange in the placement groove 202 of the fixed column 201.

[0089] Start the oil cylinder 207, drive the sliding plate 205 to slide along the axis of the fixed column 201, and slide the toggle pin 208 from the loose clamping path 2061 to the clamping path 2062 via the ramp 2063 in the slide slot 206. During this process, the clamping rod 203 rotates, driving the clamping head 204 to close, and the elastic deformation of the elastic sheet 2043 and the rubber pad 2044 adaptively clamps the flange to prevent hard extrusion damage;

[0090] In addition, one end of the elastic sheet 2043 close to the movable plate 2042 is inclined toward the bottom of the placement groove 202. When the clamping head 204 clamps the flange in the placement groove 202, it can ensure that the flange is stably attached to the bottom of the placement groove 202, thereby ensuring the stability of each welding.

[0091] The sliding plate 205 is rotatably connected with a swivel 12, the swivel 12 is fixedly connected with a pull rod 13, the pull rod 13 is connected with a pull rope 14, and the end of the pull rope 14 away from the pull rod 13 is connected to the sliding block 5;

[0092] A guide wheel 15 for guiding the pull rope 14 is rotatably provided on the side wall of the guide wall 9 .

[0093] A protrusion 1201 is fixedly connected to the rotating ring 12, a sinking groove 4022 is provided on the supporting frame 402, and the protrusion 1201 is arranged in the sinking groove 4022;

[0094] When the sliding plate 205 slides with the rotating ring 12 , the protrusion 1201 slides in the groove 4022 .

[0095] When the rotating disk 401 rotates with the supporting frame 402 , the convex block 1201 cooperates with the sink 4022 to make the rotating ring 12 rotate synchronously with the rotating disk 401 and the supporting frame 402 .

[0096] Working process of welding flange and rear axle bridge pipe:

[0097] Start the oil cylinder 207 to drive the sliding plate 205 to slide along the axis of the fixed column 201. When the flange is clamped, the movement of the sliding plate 205 is linked with the pull rope 14 through the rotating ring 12 to ensure the radial feeding of the sliding block 5 and the welding gun 6.

[0098] As the sliding block 5 brings the welding gun 6 closer to the joint between the flange and the bridge pipe, the abutment wall 802 contacts the guide wall 9 on the support frame 402, forcing the angle adjustment block 801 to drive the welding gun 6 to deflect around the axis of the rotating column 701, ensuring that the welding gun 6 is aligned with the weld at a preset inclination angle, thereby achieving an adaptive welding trajectory.

[0099] Then start the motor 403, drive the turntable 401 to rotate uniformly through gear meshing, and the support frame 402 synchronously drives the slider 5 and the welding torch 6 to perform circular motion around the joint of the flange and the bridge pipe. At the same time, the convex block 1201 cooperates with the sunk groove 4022 of the support frame 402 to make the rotating ring 12 rotate synchronously with the turntable 401, ensuring the stable tension state of the pull rope 14.

[0100] Welding end and reset:

[0101] After completing a full circle of welding, the turntable 401 returns to its original position.

[0102] The first spring 405 rebounds, pushing the slider 5 and the welding torch 6 back to the initial position.

[0103] The first oil cylinder 207 and the second oil cylinder 302 act in the reverse direction, loosen the flange and the bridge pipe, and take out the welded finished product.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. A rear axle tube ring welding device, comprising a machine body (1), wherein a fixing component (2) for fixing a flange and a clamping component (3) for clamping a rear axle tube are installed on the machine body (1), and it is characterized in that It further includes a rotating assembly (4), and the rotating assembly (4) includes a turntable (401) rotatably arranged on the machine body (1), and a support frame (402) is fixed on the side wall of the turntable (401); Wherein, a slideway (4021) is arranged in the support frame (402) along the radial direction of the turntable (401), a sliding block (5) is arranged in the slideway (4021), a welding torch (6) is arranged on the sliding block (5), and when the sliding block (5) drives the welding torch (6) to slide in the slideway (4021) near the connection position of the flange and the rear axle pipe, during the rotation of the turntable (401), the welding torch (6) can perform circumferential welding work on the connection position.

2. The ring welding device for the rear axle tube according to claim 1, wherein A fixed sleeve (7) is rotatably connected in the sliding block (5) through two rotating columns (701), and the welding torch (6) is fixed in the axial through hole of the fixed sleeve (7); An extension rod (502) is fixedly connected to the sliding block (5), a stop block (503) is fixedly connected to the extension rod (502), and a second spring (504) for pulling the welding torch (6) towards the stop block (503) is connected between the extension rod (502) and the welding torch (6). When the welding torch (6) abuts against the stop block (503), its center line is parallel to the sliding direction of the sliding block (5); A slot (702) is formed in any one of the rotating columns (701), a plug rod (8) is inserted into the slot (702), the end of the plug rod (8) extends out of the slot (702) and is fixedly connected with an angle adjusting block (801), and an abutting wall (802) with an acute angle with the center line of the welding torch (6) is arranged on the angle adjusting block (801); Wherein, an arc-shaped guiding wall (9) is arranged on the support frame (402). When the sliding block (5) feeds radially, the abutting wall (802) contacts the guiding wall (9) to force the angle adjusting block (801) to drive the welding torch (6) to deflect, so that the spraying direction of the welding torch (6) is aligned with the weld seam.

3. The rear axle tube ring welding device according to claim 2, characterized in that, The plug rod (8) is slidably connected in the slot (702), a connecting bolt (10) is arranged inside the plug rod (8), the threaded end of the connecting bolt (10) penetrates through the plug rod (8) and is meshed and connected to the rotating column (701), and a third spring (11) for inserting the plug rod (8) into the slot (702) is sleeved on the connecting bolt (10); Wherein, a positioning block (703) is fixedly connected to the side wall of the slot (702), and a plurality of positioning grooves (803) for cooperating with the positioning block (703) are circumferentially arranged on the inner end of the plug rod (8).

4. The rear axle tube ring welding device according to claim 3, characterized in that, Angle scale lines (16) are arranged on the sliding block (5) around the plug rod (8), and a pointer line (17) is arranged on the angle adjusting block (801).

5. The ring welding device for the rear axle tube according to claim 2, wherein The fixing assembly (2) includes: A fixed column (201), the fixed column (201) is fixedly connected to the side wall of the machine body (1), the fixed column (201) is coaxially arranged with the turntable (401), and a placement groove (202) for placing the flange is formed on the end face of the fixed column (201); Two clamping rods (203), the two clamping rods (203) are symmetrically and rotatably connected to both sides of the fixed column (201), and clamping heads (204) for clamping the flange in the placement groove (202) are fixedly connected to the ends of the two clamping rods (203); A sliding disk (205), the sliding disk (205) is slidably connected to the fixed column (201) by a first oil cylinder (207); Wherein, a chute (206) is formed on the side wall of the clamping rod (203), the chute (206) includes a loosening clamping path (2061), a clamping path (2062) and an inclined path (2063), and the loosening clamping path (2061) and the clamping path (2062) are connected by the inclined path (2063); a shifting pin (208) is fixed on the sliding disk (205), and the shifting pin (208) is slidably connected in the loosening clamping path (2061), the clamping path (2062) and the inclined path (2063) of the chute (206).

6. The ring welding device for the rear axle tube according to claim 5, characterized in that, The clamping head (204) includes: A fixing plate (2041), the fixing plate (2041) is fixed on the clamping rod (203); A movable plate (2042), the movable plate (2042) is arranged on the fixing plate (2041); Wherein, a plurality of uniformly distributed elastic sheets (2043) are arranged between the fixing plate (2041) and the movable plate (2042), and one end of the elastic sheet (2043) close to the movable plate (2042) is inclined towards the bottom of the placement groove (202).

7. The ring welding device for the rear axle tube according to claim 6, characterized in that, A rubber pad (2044) for contacting the side wall of the flange is fixedly connected to the side wall of the movable plate (2042), and the rubber pad (2044) gradually thickens from the end close to the bottom of the placement groove (202) towards the end close to the mouth of the placement groove (202).

8. A rear axle tube ring welding device according to claim 5, characterized in that, A rotating ring (12) is rotatably connected to the sliding disk (205), a pull rod (13) is fixedly connected to the rotating ring (12), a pull rope (14) is connected to the pull rod (13), and the end of the pull rope (14) far from the pull rod (13) is connected to a sliding block (5); Wherein, a guide wheel (15) for guiding the pull rope (14) is rotatably arranged on the side wall of the guide wall (9).

9. The ring welding device for the rear axle tube according to claim 8, characterized in that, A convex block (1201) is fixedly connected to the rotating ring (12), a sunk groove (4022) is formed on the support frame (402), and the convex block (1201) is arranged in the sunk groove (4022); When the sliding disk (205) slides with the rotating ring (12), the convex block (1201) slides in the sunk groove (4022); When the rotating disk (401) rotates with the support frame (402), under the cooperation of the convex block (1201) and the sunk groove (4022), the rotating ring (12) rotates synchronously with the rotating disk (401) and the support frame (402).

10. A rear axle tube ring welding device according to claim 1, characterized in that, The clamping assembly (3) includes two clamping seats (301), the two clamping seats (301) are oppositely arranged on the machine body (1) through a second oil cylinder (302), and V-shaped clamping grooves (303) for clamping the rear axle tube are arranged on the opposite surfaces of the two clamping seats (301).

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