Auxiliary frame overturning and welding device

Abstract

An auxiliary frame overturning and welding device belongs to the field of welding equipment and comprises an overturning mechanism, the front side and the rear side of the overturning mechanism are each provided with a roller way conveying frame, the roller way conveying frames are coaxial with the center line of the overturning mechanism, and the supporting faces of the roller way conveying frames are flush with the supporting face of the overturning mechanism. The turnover mechanism comprises a first circular ring supporting frame and a second circular ring supporting frame which are coaxially and fixedly connected, the lower portion of the first circular ring supporting frame and the lower portion of the second circular ring supporting frame are movably installed on the corresponding supporting bases respectively, the second circular ring supporting frame is connected with the transmission mechanism, and protection plates are fixed to the two sides of the first circular ring supporting frame and the two sides of the second circular ring supporting frame respectively. The protective plate is provided with the opening allowing the auxiliary frame to pass through, the roller way conveying frames used for feeding and discharging are arranged on the two sides of the turnover mechanism, the auxiliary frame can be conveniently arranged in advance, the placing efficiency of the auxiliary frame on the turnover mechanism is improved, then the working efficiency is improved, and the protective plate can effectively prevent welding spatter, smoke dust and the like from diffusing around.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a subframe flipping welding device. Background Technology

[0002] In the manufacturing process of dump trucks, the subframe is a key load-bearing component, and its welding quality is directly related to the stability and safety of the entire vehicle. However, the weld design of the subframe of dump trucks often features short welds and complex welding positions. When faced with complex welds, traditional welding methods require the use of lifting equipment to lift the subframe and rotate it 360 degrees to achieve flat welding, that is, welding the weld in a horizontal position.

[0003] The existing method of lifting and rotating 360 degrees is time-consuming, labor-intensive, and unsafe. It also requires the assistance of lifting equipment and operators, resulting in high costs. Currently, a subframe welding and rotating device has emerged (such as publication number CN218136087U). It is equipped with a rotating frame to support the subframe. A connecting frame and a support frame are fixed on the rotating frame. The connecting frame is equipped with a connecting piece, and a second support roller is rotatably connected to the support frame. The subframe is rotated by rotating the rotating frame, thereby enabling welding operations.

[0004] The existing subframe welding and turning device requires the subframe to be moved onto the support rollers of the rotating frame during use. The movement also requires manual alignment and correction, which makes the placement of the subframe on the rotating frame inefficient and affects the overall welding efficiency. In addition, the rotating frame does not have a protective function and is easily damaged by spatter during the welding process, which affects the service life of the rotating frame. Utility Model Content

[0005] To address the technical problem in the existing subframe welding and flipping devices mentioned above, which require manual handling and straightening of the subframe onto the rotating frame, resulting in low placement efficiency and affecting overall welding efficiency, this utility model provides a subframe flipping and welding device.

[0006] The technical solution of this utility model is as follows:

[0007] This utility model provides a subframe tilting and welding device, including a tilting mechanism for driving the subframe to rotate around an axis. A roller conveyor is provided on each of the front and rear sides of the tilting mechanism. The roller conveyor is coaxial with the centerline of the tilting mechanism, and the support surface of the roller conveyor is flush with the support surface of the tilting mechanism. The roller conveyor facilitates the pre-arrangement of the subframe, improves the placement efficiency of the subframe on the tilting mechanism, and thus increases work efficiency. The flush support surface makes the transfer of the subframe between the roller conveyor and the tilting mechanism smoother and more stable, reducing jamming caused by height differences or axis deviations, improving the efficiency of conveying and tilting connection, and reducing the risk of subframe damage during transfer. To mitigate the risk of damage, the tilting mechanism includes a first and second circular support frame coaxially fixedly connected. The lower parts of the first and second circular support frames are movably mounted on corresponding support seats. The second circular support frame is connected to the transmission mechanism. Protective plates are fixed on both sides of the first and second circular support frames. The protective plates have openings that allow the subframe to pass through. The protective plates on both sides can effectively block welding spatter, fumes, etc. from spreading to the surroundings, protecting operators from injury, and preventing spatter from damaging the circular support frames. The openings do not affect the normal entry and exit of the subframe, and provide protection during welding, ensuring that the surrounding environment of the entire welding device is relatively safe and clean.

[0008] Preferably, there are several first ring support frames, and the second ring support frame is located in the middle of the flipping mechanism. Multiple first ring support frames can provide more uniform and stable support force, distribute the weight of the subframe, and prevent excessive local stress from causing deformation. Placing the second ring support frame in the middle position facilitates connection with the transmission mechanism and enables precise flipping drive, ensuring that the subframe flipping process is smooth and reliable, and improving the accuracy of welding operations.

[0009] Preferably, adjacent first circular support frames are fixedly connected to each other and to each other via a first connecting frame and a second connecting frame. The second connecting frame and the first connecting frame are arranged opposite each other in the radial direction, and there is space between the second connecting frame and the first connecting frame to allow the sub-frame to pass through. The connecting frame enhances the structural rigidity of the entire tilting mechanism, making it more stable when bearing the weight of the sub-frame and the tilting torque, reducing shaking and deformation. The opposite arrangement and the reserved space for the sub-frame to pass through ensure structural strength without hindering the normal flow of the sub-frame, and facilitates the operation of different parts during welding.

[0010] Preferably, a number of support rollers are fixedly installed on the first connecting frame along its length, and a number of clamping cylinders are fixedly installed on the second connecting frame along its length. The support rollers can reduce the friction when the subframe moves on the tilting mechanism, making it easier for the subframe to enter and exit and improving work efficiency. The clamping cylinders can fix the subframe during welding to prevent it from shifting due to tilting or welding stress, ensuring the accuracy of the welding position and improving the welding quality.

[0011] Preferably, both the first and second circular support frames include a circular body and several reinforcing ribs. The protective plates are fixedly installed on both sides of the circular body. The reinforcing ribs significantly improve the load-bearing capacity of the circular support frame, enabling it to better withstand the heavy pressure of the subframe and the impact force during the rollover process, thus extending its service life. The protective plates are fixed on both sides of the circular body, resulting in a compact structure and better protection. At the same time, with the rigid support of the circular body, the protective plates are more stable and less prone to loosening or deformation.

[0012] Preferably, the inner wall of the second circular support frame is fixed with a circular reinforcing rib along its circumferential direction, and a chain is fixed on the outer wall. The chain is connected to the transmission mechanism. The circular reinforcing rib on the inner wall enhances the torsional strength of the second circular support frame itself, ensuring stable rotation under the drive of the transmission mechanism. The chain on the outer wall directly meshes with the transmission mechanism, resulting in high transmission efficiency and precise power transmission. It can quickly and smoothly drive the subframe to rotate, meeting the requirements of the welding process for the rotation angle and speed.

[0013] Preferably, the transmission mechanism includes a base fixedly installed on the ground, a motor installed on the base, and the motor connected to the transmission shaft in sequence through a reducer and a coupling. The transmission shaft meshes with a chain through a sprocket, and the meshing of the sprocket and the chain achieves reliable transmission. The entire transmission mechanism operates smoothly and efficiently, and can accurately control the tilting action of the subframe.

[0014] Preferably, two second rollers are rotatably mounted on the support base connected to the lower part of the second ring support frame. A groove is formed at the center of the outer ring of the second roller along its circumferential direction. The chain is placed in the groove. The second rollers provide auxiliary support for the second ring support frame, share some of the weight, and reduce the wear of the support base. The groove can accommodate the chain, preventing the chain from obstructing the contact between the second roller and the second ring support frame. At the same time, it prevents the chain from running off track or falling off during operation, ensuring the continuity and stability of the transmission, and thus ensuring the smooth tilting of the subframe.

[0015] Preferably, the roller conveyor frame includes a conveyor frame body, which is fixedly installed on the ground by support legs. Several support rollers are spaced apart along the length of the conveyor frame body. The conveyor frame body structure with the support legs fixed is stable and can bear the weight of the sub-carriage frame. The spaced support rollers reduce the friction between the sub-carriage frame and the conveyor frame body, facilitate the rapid conveying of the sub-carriage frame, improve the material flow efficiency of the entire welding device, and make the production rhythm more compact.

[0016] Preferably, two first rollers are rotatably mounted on the support base connected to the lower part of the first circular support frame. The center of the outer ring of the first roller is raised, and the two sides of the outer ring are fixedly provided with baffles. The raised center can reduce the contact area with the first circular support frame and reduce friction. The baffles can prevent the first circular support frame from axially shifting during rotation, ensuring the overall stability of the tilting mechanism, avoiding deviation of the subframe welding position due to support frame offset, and ensuring welding quality.

[0017] As can be seen from the above technical solutions, the advantages of this utility model are:

[0018] 1. Roller conveyor frames for loading and unloading are installed on both sides of the tilting mechanism, which facilitates the advance arrangement of the sub-carriage and improves the placement efficiency of the sub-carriage on the tilting mechanism, thereby increasing work efficiency. The flush support surface makes the sub-carriage transfer between the roller conveyor frame and the tilting mechanism more stable and smooth, reducing jamming caused by height difference or axis deviation, improving the efficiency of conveying and tilting connection, and reducing the risk of damage to the sub-carriage during transfer. Protective plates are fixed on both sides of the first and second circular support frames, which can effectively block welding spatter, fumes and other materials from spreading to the surroundings, protecting operators from injury, and preventing spatter from damaging the circular support frames. The openings do not affect the normal entry and exit of the sub-carriage and can provide protection during welding, ensuring that the surrounding environment of the entire welding device is relatively safe and clean.

[0019] 2. Place the second circular support frame in the middle position to facilitate connection with the transmission mechanism and achieve precise tilting drive, ensuring a smooth and reliable tilting process for the subframe and improving the accuracy of welding operations.

[0020] 3. Several support rollers are fixedly installed on the first connecting frame along its length, and several clamping cylinders are fixedly installed on the second connecting frame along its length. The support rollers can reduce the friction of the subframe when it moves on the tilting mechanism, making it easier for the subframe to enter and exit and improving work efficiency. The clamping cylinders can fix the subframe during welding to prevent it from shifting due to tilting or welding stress, ensuring the accuracy of the welding position and improving the welding quality. Attached Figure Description

[0021] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of the subframe flipping and welding device according to one or more embodiments of the present invention.

[0023] Figure 2 This is a front view structural schematic diagram of the roller conveyor frame according to one or more embodiments of the present invention;

[0024] Figure 3 This is a side view of the roller conveyor frame according to one or more embodiments of the present invention.

[0025] Figure 4 This is a partial cross-sectional structural diagram of the support roller according to one or more embodiments of the present invention;

[0026] Figure 5 This is a side view of the support roller according to one or more embodiments of the present invention.

[0027] Figure 6 This is a front view structural schematic diagram of the flipping mechanism according to one or more embodiments of the present utility model;

[0028] Figure 7 This is a top view of the flipping mechanism according to one or more embodiments of the present invention.

[0029] Figure 8 This is a side view of the flipping mechanism according to one or more embodiments of the present invention.

[0030] Figure 9 This is a side view of the circular support frame according to one or more embodiments of the present invention.

[0031] Figure 10 This is a front view structural diagram of the first support roller according to one or more embodiments of the present invention;

[0032] Figure 11 This is a cross-sectional structural schematic diagram of the first support roller according to one or more embodiments of the present invention;

[0033] Figure 12 This is a front view structural diagram of the second support roller according to one or more embodiments of the present invention;

[0034] Figure 13This is a cross-sectional structural schematic diagram of the second support roller according to one or more embodiments of the present invention;

[0035] Figure 14 This is a top view of the first connecting frame according to one or more embodiments of the present invention.

[0036] Figure 15 This is a top view of the second connecting frame according to one or more embodiments of the present invention.

[0037] Figure 16 This is a schematic diagram of the transmission mechanism according to one or more embodiments of the present invention;

[0038] The components represented by the various reference numerals in the diagram are:

[0039] 1. First roller conveyor frame; 2. Tilting mechanism; 3. Second roller conveyor frame; 4. Conveyor frame body; 5. Support roller; 6. Anchor bolt; 7. Roller shaft; 8. Sleeve; 9. Bearing; 10. Support; 11. Gasket; 12. First ring support frame; 13. Second ring support frame; 14. First connecting frame; 15. Second connecting frame; 16. First support roller; 17. Second support roller; 18. Transmission mechanism; 19. Protective plate; 20. Chain; 21. Reinforcing rib; 22. Groove; 23. Connecting longitudinal beam; 24. Connecting crossbeam; 25. Motor; 26. Reducer; 27. Coupling; 28. Bearing seat; 29. ​​Sprocket; 30. Drive shaft; 31. Base. Detailed Implementation

[0040] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0041] In a typical embodiment of this utility model, such as Figures 1-16As shown, a subframe flipping and welding device is proposed, comprising: a flipping mechanism 2 for supporting and driving the subframe to flip; a roller conveyor frame is provided on the front and rear sides of the flipping mechanism 2, respectively; in this embodiment, a first roller conveyor frame 1 is provided on the front side of the flipping mechanism 2, and a second roller conveyor frame 3 is provided on the rear side of the flipping mechanism 2; the roller conveyor frames are used to support and transport the subframe; both the first roller conveyor frame 1 and the second roller conveyor frame 3 are coaxial with the center line of the flipping mechanism 2, and the first roller conveyor frame 1 and the second roller conveyor frame 3 are used to support the subframe. The support surface of the frame is flush with the support surface of the flipping mechanism 2 used to support the sub-frame. In actual operation, the workers can move the sub-frame to the first roller conveyor frame 1 and make adjustments on the first roller conveyor frame 1 to align the sub-frame with the flipping mechanism 2 in advance. After the welding work of the sub-frame on the flipping mechanism 2 is completed and transferred to the second roller conveyor frame 2, the sub-frame on the first roller conveyor frame 1 can be quickly pushed into the flipping mechanism 2 for welding work, which effectively improves the placement efficiency of the sub-frame on the flipping mechanism 2 and thus improves the work efficiency.

[0042] The first roller conveyor frame 1 and the second roller conveyor frame 3 have the same structure, such as Figure 2 and Figure 3 As shown, the roller conveyor frame includes a conveyor frame body 4 and several support roller groups installed on the conveyor frame body 4. The conveyor frame body 4 is welded together from several crossbeams, longitudinal beams, vertical beams, and reinforcing beams. Several support roller groups are fixedly installed at intervals along the length of the upper surface of the conveyor frame body 4. Each support roller group consists of two oppositely arranged support rollers 5, as shown in the figure. Figure 4 and Figure 5 As shown, the support roller 5 includes a roller shaft 7, a sleeve 8, a bearing 9, a support 10, and a gasket 11. The support 10 is fixedly installed on the conveyor frame 4 by welding, bolting, or other means. The roller shaft 7 is horizontally fixedly installed on the support 10. The sleeve 8 is sleeved on the roller shaft 7, and both ends of the sleeve 8 are rotatably connected to the roller shaft 7 through the bearing 9. The sleeve 8 supports the sub-frame, and the highest point of the sleeve 8 forms the support surface. The gasket 11 is installed on the roller shaft 7 and is located between the two ends of the sleeve 8 and the support 10 to avoid wear between the sleeve 8 and the support 10. The vertical beam of the conveyor frame 4 serves as its support leg. The bottom of the support leg of the conveyor frame 4 is fixedly installed on the ground by anchor bolts 6 to ensure that the roller conveyor frame will not shift, overturn, or vibrate during operation, thus ensuring stable operation.

[0043] like Figure 6 , Figure 7 and Figure 8As shown, the flipping mechanism includes several first circular support frames 12 and a second circular support frame 13. The several first circular support frames 12 are coaxially arranged and spaced apart sequentially. The second circular support frame 13 is coaxially arranged with the first circular support frame 12 and is located at the middle position of the flipping mechanism. Adjacent first circular support frames 12 and the first circular support frame 12 and the second circular support frame 13 are fixedly connected by a first connecting frame 14 and a second connecting frame 15. The second connecting frame 15 and the first connecting frame 14 are arranged opposite to each other in the radial direction of the circular support frame, and there is space between them to allow the subframe to pass through for supporting and limiting the subframe.

[0044] The first circular support frame 12 and the second circular support frame 13 have the same structure, such as Figure 9 As shown, the circular support frame includes a circular body and several reinforcing ribs 21 welded and fixed on the inner ring of the circular body. The reinforcing ribs 21 are special-shaped tube structures to improve the overall strength and rigidity of the circular body. Protective plates 19 are also welded and fixed on both sides of the circular body. The protective plates 19 have openings that allow the subframe to pass through, so as to protect the circular body and the reinforcing ribs 21 and reduce damage to the circular support frame.

[0045] In this embodiment, a circular reinforcing rib 21 is welded and fixed to the inner wall of the circular body of the second circular support frame 13 along its circumferential direction to further improve the strength and rigidity of the second circular support frame 13 and ensure the support stability of the second circular support frame 13.

[0046] The first circular support frame 12 and the second circular support frame 13 are both vertically arranged, and the lower parts of the first circular support frame 12 and the second circular support frame 13 are respectively movably mounted on a support base. The support base is fixed to the ground by anchor bolts 6. Each support base is rotatably mounted with a pair of rollers to support and limit the first circular support frame 12 and the second circular support frame 13, while ensuring that the first circular support frame 12 and the second circular support frame 13 can rotate around the axis.

[0047] A chain 20 is fixedly provided on the outer wall of the second circular support frame 13 along its circumferential direction. A transmission mechanism 18 is also provided on one side of the second circular support frame 13. The transmission mechanism 18 meshes with the chain 20. The transmission mechanism 18 can drive the second circular support frame 13 to rotate around the axis through the chain 20, thereby driving the entire tilting mechanism 2 to rotate around the axis, so as to realize the 360° tilting of the subframe.

[0048] Two first rollers 16 are rotatably mounted on the support base connected to the lower part of the first circular support frame 12. The two first rollers 16 are arranged opposite to each other, as shown below. Figure 10 and Figure 11As shown, the center of the outer ring of the first support roller 16 is raised to reduce the contact area with the first ring support frame 12 and reduce friction. The two sides of the outer ring of the first support roller 16 are fixedly provided with baffles to limit the bottom sides of the first ring support frame 12 and prevent the first ring support frame 12 from sliding off the first support roller 16.

[0049] Two second rollers 17 are rotatably mounted on the support base connected to the lower part of the second annular support frame 13. The two first rollers 17 are arranged opposite to each other, as shown in the image. Figure 12 and Figure 13 As shown, a groove 22 is provided at the center of the outer ring of the second support roller 17 along its circumferential direction to accommodate the chain 20 and prevent the chain 20 from obstructing the contact between the second support roller 17 and the second ring support frame 13.

[0050] like Figure 14 As shown, the first connecting frame 14 includes several connecting crossbeams 24 and connecting longitudinal beams 23. The connecting crossbeams 24 and connecting longitudinal beams 23 are welded and fixed to form a frame structure. Support rollers 5 are fixedly installed on the connecting longitudinal beams 23. The axial direction of the support rollers 5 is perpendicular to the conveying direction of the subframe, so as to support the subframe through the support rollers 5; Figure 15 As shown, the second connecting frame 15 is also a frame structure composed of several connecting crossbeams 24 and connecting longitudinal beams 23. Several clamping cylinders are fixed on the connecting longitudinal beams 23 of the second connecting frame 15 to clamp the subframe. Thus, the subframe is supported and limited by the cooperation of the first connecting frame 14 and the second connecting frame 15. Each clamping cylinder has a pressure plate installed at the bottom, which can fit tightly against the longitudinal beam of the dump truck subframe to achieve precise positioning and stable clamping.

[0051] like Figure 16 As shown, the transmission mechanism 18 includes a motor 25, a reducer 26, a coupling 27, a bearing seat 28, a sprocket 29, a transmission shaft 30, and a base 31. The base 31 is fixedly installed on the ground and located on one side of the second circular support frame 13. The motor 25, the reducer 26, and the bearing seat 28 are all fixedly installed on the base 31. The motor 25 is connected to the transmission shaft 30 in sequence through the reducer 26 and the coupling 27. The transmission shaft 30 is laterally rotatably mounted on the bearing seat 28. The sprocket 29 is fixedly installed on the transmission shaft 30. The sprocket 29 meshes with the chain 20 on the outer wall of the second circular support frame 13, thereby driving the second circular support frame 13 to rotate around the axis through the chain 20.

[0052] The specific working principle is as follows:

[0053] The subframe to be welded is placed on the first roller conveyor frame 1, aligning it with the tilting mechanism 2. The subframe on the first roller conveyor frame 1 is pushed onto the first connecting frame 14 on the tilting mechanism 2. The clamping cylinder on the second connecting frame 15 is activated to clamp the subframe for welding. During welding, other subframes to be welded are placed on the first roller conveyor frame 1 and adjusted. When a subframe on the tilting mechanism 2 needs to be tilted for welding, the motor 25 is started, and the sprocket 29 is activated. In conjunction with the chain 20, the second circular support frame 13 is driven to rotate around the axis, which in turn drives the entire tilting mechanism 2 and the sub-frame on it to rotate 360 ​​degrees around the axis, realizing full-position flat welding of the sub-frame weld. After the sub-frame on the tilting mechanism 2 is welded, the tilting mechanism 2 is tilted 360 degrees again to reset, the clamping cylinder is released from clamping the sub-frame, and the welded sub-frame is pushed onto the second roller conveyor frame 3. The sub-frame to be welded on the first roller conveyor frame 1 is pushed onto the tilting mechanism 2 for welding.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A subframe roll-over welding apparatus comprising: The turnover mechanism (2) is characterized in that the front and rear sides of the turnover mechanism (2) are respectively provided with a roller conveyor frame, the roller conveyor frame is coaxial with the center line of the turnover mechanism (2), and the supporting surface of the roller conveyor frame is flush with the supporting surface of the turnover mechanism (2).

2. The subframe roll-over welding apparatus of claim 1, wherein, The first circular support frame (12) is provided with a plurality of second support frames, and the second support frame is located at the middle position of the turnover mechanism (2).

3. The subframe roll-over welding apparatus of claim 2, wherein, The first connecting frame (14) and the second connecting frame (15) are fixedly connected between the adjacent first circular support frames (12) and between the first circular support frame (12) and the second circular support frame (13), the second connecting frame (15) is arranged opposite to the first connecting frame (14) in the radial direction, and the second connecting frame (15) and the first connecting frame (14) have a space allowing the subframe to pass through.

4. The subframe roll-over welding apparatus of claim 3, wherein, A plurality of supporting rollers (5) are fixedly installed on the first connecting frame (14) along the length direction thereof, and a plurality of pressing oil cylinders are fixedly installed on the second connecting frame (15) along the length direction thereof.

5. The subframe roll-over welding apparatus of claim 1, wherein, The first circular support frame (12) and the second circular support frame (13) each include a circular body and a plurality of reinforcing ribs (21), and the protective plate (19) is fixedly installed on both sides of the circular body.

6. The subframe roll-over welding apparatus of claim 5, wherein, A circular reinforcing rib (21) is fixedly arranged on the inner wall of the circular body of the second circular support frame (13) along the circumferential direction, and a chain (20) is fixedly arranged on the outer wall.

7. The subframe roll-over welding apparatus of claim 6, wherein, The transmission mechanism (18) includes a base (31) fixedly installed on the ground, a motor (25) installed on the base (31), the motor (25) connected with a transmission shaft (30) through a speed reducer (26) and a shaft coupling (27) in sequence, and the transmission shaft (30) engaged with the chain (20) through a chain wheel (29).

8. The subframe roll-over welding apparatus of claim 6, wherein, Two second idler wheels (17) are rotatably installed on the support seat connected with the lower part of the second circular support frame (13), a groove (22) is arranged at the center position of the outer ring of the second idler wheel (17) along the circumferential direction, and the chain (20) is arranged in the groove (22).

9. The subframe roll-over welding apparatus of claim 1, wherein, The roller conveyor frame includes a conveyor frame body (4) fixedly installed on the ground through a supporting leg, and a plurality of supporting rollers (5) are arranged on the conveyor frame body (4) along the length direction thereof at intervals.

10. The subframe roll-over welding apparatus of claim 1, wherein, Two first idler wheels (16) are rotatably installed on the support seat connected with the lower part of the first circular support frame (12), the center position of the outer ring of the first idler wheel (16) is protruding, and a baffle is fixedly arranged on both sides of the outer ring.

Images