Quick butt welding and assembling equipment for vehicle frame

Abstract

The invention is suitable for the field of welding equipment, and provides frame rapid butt welding assembly equipment which comprises a base, a multi-axis manipulator, an assembly welding table, an inverted-U-shaped rod and an adjustable support. A bottom pillar and a multi-axis manipulator are fixed on the base, and a welding gun is arranged at the tail end of the base. The assembling and welding table is rotationally installed at the upper end of the bottom supporting column, and two adjusting bases controlled by a driving assembly are slidably arranged in the assembling and welding table. Inverted-U-shaped rods are arranged on the two sides of the assembly welding table, the two sides of the inverted-U-shaped rods are rotationally connected with the adjusting bases through adjusting barrels, two clamping discs are arranged on the middle section in a sliding mode, and clamping push-pull cylinders, one-way rotating rings and stop levers are arranged on the clamping discs and used for positioning and clamping workpieces. An inserting hole is formed in the top of the assembling and welding table, an adjustable support is detachably installed, and height and angle auxiliary supporting of the workpiece is achieved. By means of the multi-direction adjusting and clamping structure design, stable supporting and clamping of to-be-welded parts of different types of frames are achieved, and the welding stability and the assembling efficiency are remarkably improved.

Description

Technical Field

[0001] The invention belongs to the field of welding equipment, and in particular relates to a vehicle frame rapid butt welding assembly device. Background Art

[0002] In modern manufacturing, especially in electric vehicle manufacturing, the welding and assembly of vehicle frames is a crucial step in the production process. Traditional frame welding methods often rely on manual operation or semi-automatic equipment. This not only requires high worker skills, but also requires time and effort to adjust equipment and process parameters for different models and sizes of frames, making it difficult to meet the needs of efficient production.

[0003] With the advancement of industrial automation technology, robotic welding systems have become a key solution for improving welding quality and efficiency. However, existing welding robot systems are mostly general-purpose designs, with limited adaptability for complex structures like vehicle frames. In particular, they lack support and clamping capabilities, making them inflexible for a wide variety of welded parts. Therefore, developing welding assembly equipment that can quickly connect and stably support different types of vehicle frames has become a key goal for improving welding efficiency and reducing costs.

[0004] Although the welding auxiliary equipment currently available on the market can solve the above problems to a certain extent, it generally has the following shortcomings: 1) It is difficult to quickly adjust to adapt to frames of different shapes and sizes; 2) Quality problems may occur during the welding process due to unstable support; 3) A lot of time is required to adjust the equipment; 4) Complex customized solutions increase the company's investment costs.

[0005] Therefore, in view of the above status quo, there is an urgent need to develop a frame rapid butt welding assembly equipment to overcome the shortcomings in current practical applications. Summary of the Invention

[0006] The object of the present invention is to provide a vehicle frame rapid butt welding assembly device, aiming to solve the problems mentioned in the above background technology.

[0007] The present invention is achieved by providing a vehicle frame rapid butt welding assembly device, comprising: A base and a bottom support fixed thereon, a multi-axis manipulator fixed to one side of the base, a welding gun mounted at the end of the multi-axis manipulator; The welding table is rotatably mounted on the upper end of the bottom support, with two adjustment seats sliding inside and a drive assembly installed to drive the two adjustment seats closer or farther away from each other; An inverted U-shaped rod is provided on each side of the assembly welding table, and its branch sections on both sides are adjustably connected to the adjustment cylinder, and the two adjustment cylinders are adjustably connected to the two ends of the adjustment seat through the first support shaft; two clamping discs are slidably provided on the middle section of the inverted U-shaped rod, and a clamping push-pull cylinder is fixed to one side of the clamping disc, and a one-way swivel is installed on the clamping disc for unidirectional rotation. A stop rod is provided between the one-way swivels of the two clamping discs, and stop cylinders fixedly connected to the one-way swivel are slidably provided at both ends of the stop rod; Adjustable support: There are several plug holes on the top of the welding table. The adjustable support can be detachably installed on the plug holes to assist in supporting the height and angle of the welded parts.

[0008] According to a further technical solution, a collar is fixed on the bottom of the assembly welding station, the upper end of the bottom support is rotatably connected to the collar, and a third fastening bolt for locking and fixing is installed on the collar.

[0009] A further technical solution is that an adjustment cavity is opened on the inner side of the assembly welding table, and guide ridges are fixed on the upper and lower sides of the adjustment cavity, and the adjustment seat is slidably connected to the guide ridges; the driving assembly includes a motor and forward and reverse screw rods, the forward and reverse screw rods are rotatably installed in the middle of the assembly welding table perpendicular to the adjustment seat, and the adjustment seat is threadedly connected to the forward and reverse screw rods, the motor is fixed on the assembly welding table and is transmission connected to one end of the forward and reverse screw rods, and when the motor drives the forward and reverse screw rods to rotate, the two adjustment seats synchronously approach or move away.

[0010] A further technical solution is that the adjusting cylinder is equipped with a second fastening bolt for locking the branch sections on both sides of the inverted U-shaped rod, one end of the first support shaft is fixedly connected to the adjusting cylinder, and the other end is rotatably connected to the adjusting seat, and the adjusting seat is equipped with a first fastening bolt for locking the first support shaft.

[0011] A further technical solution is that an annular groove is provided on the outside of the clamping disk, a one-way swivel is rotatably connected to the annular groove, a ratchet is fixed on the inside of the one-way swivel, a pawl groove is provided at the bottom of the annular groove, a second support shaft is fixed in the pawl groove, a pawl that cooperates with the ratchet is rotatably installed on the second support shaft, and a torsion spring for elastically supporting the pawl is also installed on the second support shaft.

[0012] According to a further technical solution, the one-way swivel on the left side of the assembly welding station rotates in a counterclockwise direction, and the one-way swivel on the right side rotates in a clockwise direction.

[0013] A further technical solution is that the adjustable support includes a bracket with an arc-shaped groove on the top, a gear ring is fixed to the bottom of the bracket, a telescopic column is provided on the inner side of the gear ring, the upper end of the telescopic column is rotatably connected to the bracket, an angle bracket is fixed on the telescopic column, an L-shaped fixing rod that cooperates with the gear ring is slidably provided on the angle bracket, the L-shaped fixing rod is connected to the angle bracket through a first elastic member, and the first elastic member is used to make the end of the L-shaped fixing rod abut against the gear ring.

[0014] A further technical solution is that the lower part of the telescopic column is slidably connected to the first sliding cavity on the upper part of the support tube, a second elastic member for elastically supporting the telescopic column is installed in the first sliding cavity, and a fourth fastening bolt for locking the telescopic column is provided on the upper part of the support tube.

[0015] A further technical solution is that the lower part of the support tube is circumferentially distributed with extension holes, and a horizontal support rod is slidably provided on the extension hole. The outer end of the horizontal support rod is fixed with an arc plate, and the inner end is connected to the lower end of the locking rod through a connecting rod. The locking rod is slidably arranged in the second sliding cavity of the support tube, and the upper part of the locking rod is provided with an unlocking handle extending from the movable mouth of the support tube. The lower end of the locking rod is connected to the bottom of the transmission cavity through a third elastic member, and the third elastic member is used to make the arc plate abut and fix with the spherical structure at the lower part of the plug-in hole.

[0016] According to a further technical solution, the upper portion of the plug hole is a cylindrical structure, and the lower portion is a spherical structure, and the diameter of the spherical structure is larger than the diameter of the cylindrical structure.

[0017] The present invention provides a frame rapid butt welding assembly device, which has the following beneficial effects: The position of the adjustment seat is adjusted by the drive assembly, and the inverted U-shaped rod can be adjusted in position relative to the adjustment cylinder and in rotation relative to the adjustment seat. After comprehensive adjustment, the middle section can support different types of frame parts to be welded, and the clamping push-pull cylinder drives the clamping plate to move to clamp the parts to be welded to ensure their stability. The one-way rotating one-way swivel is combined with the setting of the retaining cylinder and the retaining rod to further provide transitional support, so that the frame parts to be welded can maintain welding stability. In addition, by opening the plug holes on the assembly welding table and the detachable setting of the adjustable supports, the appropriate number of adjustable supports can be selected according to needs, and the parts to be welded can be auxiliary supported at a certain height and angle as needed, further meeting the requirements of welding stability and improving the efficiency of frame assembly welding.

[0018] In summary, the present invention achieves stable support and clamping of different types of vehicle frame parts to be welded through multi-directional adjustment and clamping structure design, significantly improving welding stability and assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a vehicle frame rapid butt welding assembly device provided by an embodiment of the present invention; Figure 2 for Figure 1 Schematic diagram of the structure from an upward viewing angle; Figure 3 A schematic top view of the structure of a vehicle frame rapid butt welding assembly device provided by an embodiment of the present invention; Figure 4 for Figure 3 Schematic diagram of a local cross section along the II direction; Figure 5 for Figure 4 Schematic diagram of the enlarged structure of part A; Figure 6 for Figure 5 Schematic diagram of the structure when the ratchet slides over the pawl; Figure 7 A schematic structural diagram of an adjustable support portion in a vehicle frame quick butt welding assembly device provided by an embodiment of the present invention; Figure 8 for Figure 7 A schematic diagram of the main cross-sectional structure of FIG. Figure 9 for Figure 8 Schematic diagram of the enlarged structure of part B; Figure 10 This is a schematic structural diagram of the plug-in hole in the frame quick butt welding assembly equipment provided by an embodiment of the present invention.

[0020] In the figure: 1-clamping push-pull cylinder, 2-cylinder fixing seat, 3-middle section, 4-blocking cylinder, 5-blocking rod, 6-clamping plate, 7-one-way swivel, 8-branch sections on both sides, 9-plug hole, 10-adjustable support, 11-welding gun, 12-multi-axis manipulator, 13-base, 14-motor, 15-bottom support, 16-assembly welding table, 17-guide edge, 18-first fastening bolt, 19-second fastening bolt, 20-adjusting cylinder, 21-first support shaft, 22-adjusting seat, 23-positive and negative screw rod, 24-collar, 25-third fastening bolt, 2 6-annular groove, 27-ratchet, 28-pawl groove, 29-second support shaft, 30-pawl, 31-bracket, 32-gear ring, 33-angle bracket, 34-L-shaped fixing rod, 35-first elastic member, 36-telescopic column, 37-fourth fastening bolt, 38-support cylinder, 39-movable port, 40-unlocking handle, 41-arc plate, 42-horizontal support rod, 43-first sliding cavity, 44-second elastic member, 45-locking rod, 46-second sliding cavity, 47-transmission cavity, 48-third elastic member, 49-connecting rod, 50-extending hole. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0023] like Figure 1-3As shown, a vehicle frame rapid butt welding assembly device provided by one embodiment of the present invention includes a base 13 and a bottom support 15 fixed thereto. A multi-axis manipulator 12 is fixed to one side of the base 13. The multi-axis manipulator 12 is preferably a six-axis manipulator. A welding gun 11 is installed at the end of the multi-axis manipulator 12. The welding task can be completed by driving the welding gun 11 by the multi-axis manipulator 12. It also includes: The welding platform 16 is rotatably mounted on the upper end of the bottom support 15. Two adjustment seats 22 are slidably provided on the inner side of the welding platform 16. A driving assembly for driving the two adjustment seats 22 to move closer to or away from each other is also installed on the welding platform 16. An inverted U-shaped rod, an inverted U-shaped rod is provided on each side of the welding station 16, and the branch sections 8 on both sides of the inverted U-shaped rod are adjustably connected to the adjusting cylinder 20, and the two adjusting cylinders 20 are also correspondingly connected to the two ends of the adjusting seat 22 through the first support shaft 21 for adjustable rotation; two clamping plates 6 are slidably provided on the middle section 3 of the inverted U-shaped rod, and a clamping push-pull cylinder 1 is fixed on the side away from the two clamping plates 6, and the clamping push-pull cylinder 1 is also fixedly connected to the middle section 3, and a one-way swivel 7 is unidirectionally installed on the clamping plate 6, and a stop rod 5 is further provided between the one-way swivels 7 of the two clamping plates 6 installed on the middle section 3, and a stop rod 5 is slidably provided at both ends of the stop rod 5. The two stop cylinders 4 are fixedly connected to the two one-way swivels 7 accordingly; Adjustable support 10, a plurality of plug holes 9 are evenly distributed on the top of the assembly welding platform 16, and the adjustable support 10 is detachably installed on the plug holes 9. The adjustable support 10 is used to provide auxiliary support for the weldment at a certain height and angle.

[0024] In an embodiment of the present invention, the position of the adjustment seat 22 is adjusted by the driving assembly, and the inverted U-shaped rod can be adjusted in position relative to the adjustment cylinder 20 and rotated relative to the adjustment seat 22. After comprehensive adjustment, the middle section 3 can support different types of frame parts to be welded, and the clamping push-pull cylinder 1 drives the clamping plate 6 to move to clamp the parts to be welded to ensure their stability. The one-way rotating one-way swivel 7 is matched with the blocking cylinder 4 and the blocking rod 5 to provide further transitional support, so that the frame parts to be welded can maintain welding stability. In addition, by providing the plug-in hole 9 on the assembly welding table 16 and the detachable setting of the adjustable support 10, an appropriate number of adjustable supports 10 can be selected as needed, and auxiliary support of a certain height and angle can be performed on the parts to be welded as needed, further meeting the requirements of welding stability and improving the efficiency of frame assembly welding.

[0025] In summary, the present invention achieves stable support and clamping of different types of vehicle frame parts to be welded through multi-directional adjustment and clamping structure design, significantly improving welding stability and assembly efficiency.

[0026] like Figure 1-6 As shown, as a preferred embodiment of the present invention, a collar 24 is fixed to the bottom of the assembly welding table 16, and the upper end of the bottom support 15 is rotatably connected to the collar 24. A third fastening bolt 25 is also installed on the collar 24 for locking and fixing it, which facilitates the rotation adjustment and locking of the assembly welding table 16, that is, changing the angle of the assembly welding table 16 relative to the multi-axis manipulator 12 to meet the needs of flexible processing.

[0027] The inner side of the welding platform 16 is provided with an adjustment cavity that runs through from front to back. Guide ribs 17 are fixed to the upper and lower sides of the adjustment cavity, and the adjustment seat 22 is slidably connected to the guide ribs 17. The drive assembly includes a motor 14 and a forward and reverse screw rod 23. The forward and reverse screw rod 23 is rotatably mounted on the middle part of the welding platform 16 perpendicular to the adjustment seat 22, and the adjustment seat 22 is threadedly connected to the forward and reverse screw rod 23. The welding platform 16 is also fixed with a motor 14 that is transmission-connected to one end of the forward and reverse screw rod 23. When the motor 14 drives the forward and reverse screw rod 23 to rotate, the two adjustment seats 22 move closer or farther away synchronously, thereby meeting the requirements of reliable adjustment. The guide ribs 17 also play a guiding and anti-twist role.

[0028] The adjusting cylinder 20 is provided with a second fastening bolt 19 for locking and fixing the branch sections 8 on both sides of the inverted U-shaped rod. One end of the first support shaft 21 is fixedly connected to the adjusting cylinder 20, and the other end of the first support shaft 21 is rotatably connected to the adjusting seat 22. The adjusting seat 22 is provided with a first fastening bolt 18 for locking and fixing the first support shaft 21, thereby realizing the position and rotation adjustment of the inverted U-shaped rod to meet diversified support requirements.

[0029] The clamping push-pull cylinder 1 is arranged parallel to the middle section 3 of the inverted U-shaped rod, and the cylinder body of the clamping push-pull cylinder 1 is fixedly connected to the middle section 3 of the inverted U-shaped rod through the cylinder fixing seat 2 to meet the stability requirements; the two clamping plates 6 are close to each other on one side and are provided with an anti-slip layer (not shown) to meet the clamping reliability requirements.

[0030] like Figure 4-6As shown, an annular groove 26 is provided on the outer side of the clamping disk 6, and the one-way ring 7 is rotatably connected to the annular groove 26. A ratchet 27 is also fixed on the inner side of the one-way ring 7. A pawl groove 28 is also provided on the inner bottom of the annular groove 26. A second support shaft 29 is fixed in the pawl groove 28. A pawl 30 that cooperates with the ratchet 27 is rotatably mounted on the second support shaft 29. A torsion spring (not shown) for elastically supporting the pawl 30 is also mounted on the second support shaft 29. The matching relationship between the ratchet 27 and the pawl 30 can be achieved by using public technology without limitation or redundant description. The sliding of the blocking cylinder 4 and the blocking rod 5 can adapt to the adjustment movement of the clamping plate 6. According to the different shapes of the frame parts to be welded, the blocking cylinder 4 and the blocking rod 5 can be pulled, so that the whole composed of the one-way ring 7 and the ratchet 27 can rotate relative to the clamping plate 6. After the rotation is completed, the ratchet 27 can be limited by the pawl 30 to prevent reversal, so as to achieve the effect of stopping the rotation and locking it, thereby meeting the flexible support requirements for the frame parts to be welded.

[0031] Furthermore, the one-way swivel 7 located on the left side of the welding platform 16 rotates counterclockwise, and the one-way swivel 7 located on the right side of the welding platform 16 rotates clockwise, which meets the reliable support requirements and only requires a reasonable arrangement of the ratchet 27 and the pawl 30.

[0032] like Figure 7-10 As shown, as a preferred embodiment of the present invention, the adjustable support 10 includes a bracket 31 with an arc-shaped groove on the top, a gear ring 32 is fixed to the bottom of the bracket 31, a telescopic column 36 is provided on the inner side of the gear ring 32, the upper end of the telescopic column 36 is rotatably connected to the bracket 31, and an angle bracket 33 is fixed on the telescopic column 36, an L-shaped fixing rod 34 that cooperates with the gear ring 32 is slidably provided on the angle bracket 33, and the vertical portion of the L-shaped fixing rod 34 is also connected to the angle bracket 33 through a first elastic member 35, and the first elastic member 35 is used to make the end of the L-shaped fixing rod 34 abut against the gear ring 32. The first elastic member 35 can be a spring or an elastic rope, so that the bracket 31 can be adjusted to brake backward, which is convenient and quick.

[0033] The lower portion of the telescopic column 36 is slidably connected to the first sliding cavity 43 provided on the upper portion of the support tube 38. A second elastic member 44 for elastically supporting the telescopic column 36 is also installed in the first sliding cavity 43. The second elastic member 44 can be a spring. The upper portion of the support tube 38 is also provided with a fourth fastening bolt 37 for locking and fixing the telescopic column 36. When the fourth fastening bolt 37 is loosened, the telescopic column 36 is pushed upward under the elastic force of the second elastic member 44, so that the bracket 31 can elastically abut against the workpiece to be welded, and then the fourth fastening bolt 37 can be locked, thereby improving the reliability and convenience of the support.

[0034] A plurality of extension holes 50 are circumferentially distributed at the lower portion of the support tube 38, and a transverse support rod 42 is slidably provided on the extension hole 50. An arc-shaped plate 41 is fixed to the outer end of the transverse support rod 42, and the inner end of the transverse support rod 42 is connected to the lower end of the locking rod 45 through a connecting rod 49. The locking rod 45 is slidably provided in a second sliding cavity 46 opened at the lower portion of the support tube 38, and a transmission cavity 47 for the movement of the connecting rod 49 is provided at the lower portion of the second sliding cavity 46. An unlocking handle 40 is also fixed to the upper side of the locking rod 45, and the unlocking handle 40 extends from the movable opening 39 opened on the side wall of the support tube 38. The lower end of the locking rod 45 is also connected to the bottom of the transmission cavity 47 through a third elastic member 48. The third elastic member 48 can be a spring or an elastic rope. The third elastic member 48 is used to make the second sliding cavity 46 close to the bottom of the transmission cavity 47.

[0035] The upper portion of the plug-in hole 9 is a cylindrical structure, and the lower portion of the plug-in hole 9 is a spherical structure, and the diameter of the spherical structure is larger than the diameter of the cylindrical structure. After the arc plate 41 is inserted into the plug-in hole 9, the unlocking handle 40 is released. Under the elastic force of the third elastic member 48, the locking rod 45 moves downward, so that the connecting rod 49 pushes the cross-bracing rod 42 outward, so that the arc plate 41 is abutted and fixed with the lower spherical structure of the plug-in hole 9, and the installation is quick and reliable. When the adjustable support 10 needs to be disassembled, pulling the unlocking handle 40 upward can cause the connecting rod 49 to pull the cross-bracing rod 42 inward, thereby causing the arc plate 41 to shrink inward and be pulled out of the cylindrical structure of the plug-in hole 9, and the disassembly is quick.

[0036] The above embodiment of the present invention provides a frame rapid butt welding assembly equipment, the working principle of which is to complete the automatic welding task by driving the welding gun 11 through the multi-axis manipulator 12, the welding table 16 can be rotated and adjusted and is provided with two adjustment seats 22 driven by the motor 14 and the positive and negative screw rods 23, the adjustment seat 22 is connected to the inverted U-shaped rod through the first support shaft 21 and the adjustment cylinder 20, so as to realize the flexible movement and angle adjustment of the inverted U-shaped rod in space; the middle section 3 of the inverted U-shaped rod is provided with a clamping plate 6, and the clamping plate 6 realizes the inverted U-shaped rod by clamping the push-pull cylinder 1 The clamping mechanism for the frame to be welded is equipped with a one-way swivel 7, ratchet 27, and pawl 30, allowing the clamping plate 6 to rotate unidirectionally and prevent backflow, improving clamping stability and adaptability. The stop bar 5 and stop cylinder 4 assist in supporting the frame. The top of the welding platform 16 is equipped with multiple sockets 9, which can be removably installed with an adjustable support 10. The adjustable support 10 includes a bracket 31 with an arc-shaped groove, a telescopic column 36, a support cylinder 38, and a locking mechanism. The adjustable support 10 can be adjusted in height and angle according to the shape of the frame. The elastic support and automatic locking structure enable quick installation and removal. The overall structure of the present invention achieves stable clamping and flexible support for different types of frames, significantly improving welding assembly efficiency and operational convenience.

[0037] The control, model, and circuit connection of each component are not specifically limited and can be flexibly configured in actual applications. The circuits, electronic components, and modules involved are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by this invention does not involve improvements to the software and methods.

[0038] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0039] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A vehicle frame rapid butt welding assembly device, comprising: A base (13) and a bottom support (15) fixed thereon, wherein a multi-axis manipulator (12) is fixed on one side of the base (13), and a welding gun (11) is installed at the end of the multi-axis manipulator (12), characterized in that: The welding table (16) is rotatably mounted on the upper end of the bottom support (15), and two adjustment seats (22) are slidably provided on the inner side thereof, and a driving assembly is installed to drive the two adjustment seats (22) to move closer to or away from each other; An inverted U-shaped rod is provided on each side of the assembly welding table (16), and its two side branch sections (8) are adjustably connected to the adjustment cylinder (20), and the two adjustment cylinders (20) are adjustably connected to the two ends of the adjustment seat (22) through the first support shaft (21); two clamping discs (6) are slidably provided on the middle section (3) of the inverted U-shaped rod, a clamping push-pull cylinder (1) is fixed on one side of the clamping disc (6), a one-way swivel (7) is unidirectionally installed on the clamping disc (6), a stop rod (5) is provided between the one-way swivels (7) of the two clamping discs (6), and a stop rod (4) fixedly connected to the one-way swivel (7) is slidably provided at both ends of the stop rod (5); The adjustable support (10) is provided with a plurality of plug holes (9) on the top of the assembly welding platform (16). The adjustable support (10) is detachably mounted on the plug holes (9) and is used for auxiliary support of the height and angle of the welded parts.

2. The vehicle frame rapid butt welding assembly equipment according to claim 1, characterized in that: A collar (24) is fixed to the bottom of the assembly welding platform (16), the upper end of the bottom support (15) is rotatably connected to the collar (24), and a third fastening bolt (25) for locking and fixing is installed on the collar (24).

3. The vehicle frame rapid butt welding assembly equipment according to claim 1, characterized in that: An adjustment cavity is provided on the inner side of the welding platform (16), and guide ribs (17) are fixed on the upper and lower sides of the adjustment cavity, and the adjustment seat (22) is slidably connected to the guide ribs (17); the driving component includes a motor (14) and a positive and negative screw rod (23), the positive and negative screw rod (23) is rotatably installed on the middle part of the welding platform (16) perpendicular to the adjustment seat (22), and the adjustment seat (22) is threadedly connected to the positive and negative screw rod (23), the motor (14) is fixed on the welding platform (16) and is transmission-connected to one end of the positive and negative screw rod (23), and when the motor (14) drives the positive and negative screw rod (23) to rotate, the two adjustment seats (22) are synchronously moved closer or farther away.

4. The vehicle frame rapid butt welding assembly equipment according to claim 1, characterized in that: The adjusting cylinder (20) is provided with a second fastening bolt (19) for locking the branch sections (8) on both sides of the inverted U-shaped rod. One end of the first support shaft (21) is fixedly connected to the adjusting cylinder (20) and the other end is rotatably connected to the adjusting seat (22). The adjusting seat (22) is provided with a first fastening bolt (18) for locking the first support shaft (21).

5. The vehicle frame rapid butt welding assembly equipment according to claim 1, characterized in that: An annular groove (26) is provided on the outside of the clamping disk (6), the one-way rotating ring (7) is rotatably connected to the annular groove (26), a ratchet (27) is fixed on the inside of the one-way rotating ring (7), a pawl groove (28) is provided on the bottom of the annular groove (26), a second support shaft (29) is fixed in the pawl groove (28), a pawl (30) cooperating with the ratchet (27) is rotatably mounted on the second support shaft (29), and a torsion spring for elastically supporting the pawl (30) is also mounted on the second support shaft (29).

6. The vehicle frame rapid butt welding assembly equipment according to claim 5, characterized in that: The one-way rotating ring (7) on the left side of the assembly welding station (16) rotates in a counterclockwise direction, and the one-way rotating ring (7) on the right side rotates in a clockwise direction.

7. The vehicle frame rapid butt welding assembly equipment according to claim 1, characterized in that: The adjustable support (10) includes a bracket (31) with an arc-shaped groove on the top, a gear ring (32) is fixed to the bottom of the bracket (31), a telescopic column (36) is provided on the inner side of the gear ring (32), the upper end of the telescopic column (36) is rotatably connected to the bracket (31), an angle bracket (33) is fixed on the telescopic column (36), an L-shaped fixing rod (34) that cooperates with the gear ring (32) is slidably provided on the angle bracket (33), the L-shaped fixing rod (34) is connected to the angle bracket (33) through a first elastic member (35), and the first elastic member (35) is used to make the end of the L-shaped fixing rod (34) abut against the gear ring (32).

8. The vehicle frame rapid butt welding assembly equipment according to claim 7, characterized in that: The lower portion of the telescopic column (36) is slidably connected to a first sliding cavity (43) on the upper portion of the support tube (38); a second elastic member (44) for elastically supporting the telescopic column (36) is installed in the first sliding cavity (43); and a fourth fastening bolt (37) for locking the telescopic column (36) is provided on the upper portion of the support tube (38).

9. The vehicle frame rapid butt welding assembly equipment according to claim 8, characterized in that: The lower part of the support tube (38) is circumferentially distributed with extension holes (50), and a transverse support rod (42) is slidably provided on the extension hole (50). The outer end of the transverse support rod (42) is fixed with an arc plate (41), and the inner end is connected to the lower end of the locking rod (45) through a connecting rod (49). The locking rod (45) is slidably provided in the second sliding cavity (46) of the support tube (38). The upper part of the locking rod (45) is provided with an unlocking handle (40) extending from the movable opening (39) of the support tube (38). The lower end of the locking rod (45) is connected to the bottom of the transmission cavity (47) through a third elastic member (48). The third elastic member (48) is used to make the arc plate (41) abut and fix with the spherical structure at the lower part of the plug hole (9).

10. The vehicle frame rapid butt welding assembly equipment according to claim 9, characterized in that: The upper portion of the plug hole (9) is a cylindrical structure, and the lower portion is a spherical structure, and the diameter of the spherical structure is larger than the diameter of the cylindrical structure.

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