A turnover device for trailer chassis welding

Abstract

The application discloses a turnover device for trailer chassis welding, and relates to the technical field of welding turnover.The opposite sides of a bearing frame are provided with variable-direction pushing parts, the end of the bearing frame is provided with a lifting seat, and a supporting part is horizontally arranged on the lifting seat and is capable of sliding; the opposite sides of the bearing frame are provided with L-shaped guide grooves one and two, and a dynamic supporting part is arranged between the L-shaped guide grooves two and is capable of being driven by the corresponding variable-direction pushing parts; the inner side of the bearing frame is provided with a turnover assembly which is capable of sliding between the L-shaped guide grooves one, the turnover assembly is capable of moving in the L-shaped guide grooves one through the corresponding variable-direction pushing parts, and a turnover limiting part is rotatably arranged at the bottom of the turnover assembly; and an electric push rod is rotatably arranged between the supporting part and the turnover assembly.The application realizes the gradual deflection of the descending frame through the cooperation of the turnover assembly and the L-shaped guide grooves one and the cooperation of the dynamic supporting part and the L-shaped guide grooves two, the turnover process does not cause damage to the frame, and the safety of the turnover action of the frame is improved.

Description

Technical Field

[0001] This invention belongs to the field of welding and turning technology, and in particular relates to a turning device for welding trailer chassis. Background Technology

[0002] Trailers are vehicles towed by automobiles but not driven by their own power, and are an important type of vehicle for road transportation. A trailer chassis consists of four parts: the running gear, transmission system, steering system, and braking system. The frame is a crucial component of the running gear. Welding equipment is required during frame production, and during the welding process, the frame, after the front welding is completed, needs to be flipped over to facilitate welding the back side.

[0003] In existing technologies, after the welding of a small trailer frame is completed, most existing tilting devices achieve frame tilting by using a motor to drive the bearings. Because the frame needs to be replaced frequently, uneven stress on the bearings between the motor and the clamping structure can easily damage them. Alternatively, a receiving tilting mechanism is set between the upper and lower conveyor belts, where one end of the frame is tilted and dropped onto the receiving tilting mechanism, which then tilts the frame onto the lower conveyor belt. This tilting method is prone to frame damage. Therefore, we provide a tilting device for trailer chassis welding that enables progressive frame tilting. Summary of the Invention

[0004] The purpose of this invention is to provide a tilting device for welding trailer chassis. Through the structural design of a rotating roller, a lifting seat, an L-shaped guide groove, an L-shaped guide groove, a dynamic support, a tilting assembly, a tilting limit part, and an electric push rod, the problems in the background art mentioned above are solved.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: The present invention is a tilting device for welding trailer chassis, including a bearing frame, with a plurality of rotating rollers arrayed on the inner side of the bearing frame; a directional pushing part is installed on both opposite sides of the bearing frame, and a lifting seat is provided at the end of the bearing frame, with a support part horizontally sliding on the lifting seat; an L-shaped guide groove and an L-shaped guide groove are provided on both opposite sides of the bearing frame, with half of the L-shaped guide groove surrounding the outside of the L-shaped guide groove, and a dynamic support member driven by the opposing directional pushing part is provided between the L-shaped guide grooves.

[0006] The inner side of the bearing frame is provided with a flipping assembly that slides between the L-shaped guide grooves. The flipping assembly moves within the L-shaped guide grooves by a counter-rotating directional pushing part. A flipping limit part is provided at the bottom of the flipping assembly. An electric push rod is rotatably provided between the support part and the flipping assembly. As the flipping assembly moves down along the L-shaped guide groove in the vertical state, the dynamic support component moves down synchronously to support the bottom of the frame. The frame on the flipping assembly at the end of the L-shaped guide groove flips 90°. The electric push rod retracts, causing the flipping assembly and the frame to flip to a horizontal state.

[0007] The present invention is further configured such that motor mounts are installed on both sides of the bearing frame, servo motors are fixedly mounted on the motor mounts, and power push frames are connected to the output ends of the servo motors. The direction-changing push part is composed of servo motors and power push frames.

[0008] The present invention is further configured such that the dynamic support component includes a fixed shaft, a support roller is rotatably sleeved on the fixed shaft, two frame positioning rings are symmetrically fixed on the sides of both the support roller and the rotating roller, a roller is rotatably mounted at both ends of the fixed shaft in an L-shaped guide groove, and a guide roller that cooperates with the corresponding power push frame is fixedly installed at one end of the fixed shaft.

[0009] The present invention is further configured such that the flipping assembly includes a flipping frame, and a plurality of rotating rollers are rotatably provided inside the flipping frame. Both ends of the rotating rollers coaxial with the flipping frame are equipped with rollers. The rollers are rolled in the L-shaped guide groove. One end of one roller is fixed with a guide roller that is fitted inside the corresponding power push frame.

[0010] The invention is further configured such that a guide frame is fixedly installed at the end of the bearing frame, a lifting seat is slidably disposed inside the guide frame, two horizontal bearing rods are symmetrically slidably disposed on the lifting seat, a support seat is fixed between the horizontal bearing rods, and the support part is composed of the horizontal bearing rods and the support seat; a support rod is connected to the side of the tilting frame opposite to the rotating roller two through an ear seat, the bottom of the electric push rod is rotatably disposed on the top of the support seat, and the movable end of the electric push rod is connected to a connecting sleeve rotatably sleeved on the support rod.

[0011] The present invention is further configured such that the flipping limiting part includes a support shaft rotatably disposed inside the flipping frame, a flipping limiting roller is fixedly sleeved on the support shaft, a frame limiting cavity is opened on the peripheral side of the flipping limiting roller, a push port penetrating the flipping limiting roller is provided inside the frame limiting cavity, and the bottom surface of the frame limiting cavity on the flipping frame in the vertical state is tangent to the top of the rotating roller.

[0012] The invention is further configured such that a frame pusher is provided on the inner side of the bearing frame, located below the rotating roller, and the movable end of the frame pusher is connected to a power push plate adapted to the size of the push port. The power push plate is used to push the frame that has completed the flipping on the horizontal flipping frame to move towards the guide frame.

[0013] The invention is further configured such that a horizontal support platform is fixedly installed on the side of the guide frame away from the bearing frame, and a docking hydraulic cylinder is installed on the side of the horizontal support platform away from the guide frame via a mounting plate. The output end of the docking hydraulic cylinder is connected to a welding platform. The top of both the horizontal support platform and the welding platform is provided with rod openings corresponding to the horizontal bearing rods. The welding platform is configured to move closer to the tilting frame to support the tilted frame. The top of the horizontal support platform is provided with a passageway communicating with the rod openings.

[0014] The present invention has the following beneficial effects: During the downward movement of the vertical flipping assembly along the L-shaped guide groove, the dynamic support component moves downward synchronously to support the bottom of the frame, so that the frame detached from the rotating roller is always stably supported by the dynamic support component. This ensures that the frame gradually tilting on the flipping assembly during the downward movement will not fall off, thereby realizing the gradual deflection of the frame as it descends synchronously with the flipping assembly, improving the stability of the frame flipping process. The frame on the flipping assembly at the end of the L-shaped guide groove completes a 90° flip. At this time, the frame on the flipping assembly is in a vertical state under the limiting action of the dynamic support component. The electric push rod retracts and drives the flipping assembly to rotate 90° to a horizontal state. After completing a 180° flip, the frame is supported inside the flipping assembly. Thus, the stable flipping process of the frame after the initial welding is realized. Compared to existing technologies where one end of the frame is suspended and falls or the single pivot experiences extremely uneven stress during flipping, this invention uses the relay cooperation of L-shaped double-rail limiting and dynamic support rollers to convert the gravitational potential energy during the frame flipping process into kinetic energy that descends smoothly along the guide groove. This avoids the rigid drop impact and local stress concentration during frame flipping, eliminating the possibility of frame damage from the underlying mechanical structure and substantially improving the safety limit and stability of the frame flipping action. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a diagram showing the completed flipping state of the flipping device used for welding trailer chassis in this invention.

[0017] Figure 2 This is a diagram showing the state of the flipping component of the flipping device in this invention before flipping.

[0018] Figure 3 for Figure 2 The front view of the structure.

[0019] Figure 4This is a diagram showing the state of the flipping component of the flipping device in this invention descending to its lowest position.

[0020] Figure 5 This is an initial state diagram of the flipping device in this invention.

[0021] Figure 6 This is a schematic diagram of the flipping component in this invention.

[0022] Figure 7 This is a schematic diagram of the flipping limiting part in the present invention.

[0023] Figure 8 This is a schematic diagram of the dynamic support component in this invention.

[0024] The attached diagram lists the components represented by each number as follows: 1. Support frame; 2. Rotary roller one; 3. Lifting seat; 4. L-shaped guide groove one; 5. L-shaped guide groove two; 6. Dynamic support component; 7. Tilting assembly; 8. Tilting limit part; 9. Electric push rod; 10. Car frame; 11. Servo motor; 12. Power push frame; 13. Fixed shaft; 14. Support roller; 15. Car frame positioning ring; 16. Roller one; 17. Guide roller one; 18. Tilting frame; 19. Rotary roller two; 20. Roller two; 21. Guide roller two; 22. Guide frame; 23. Horizontal support rod; 24. Support seat; 25. Support rod; 26. Support shaft; 27. Tilting limit roller; 28. Car frame limit cavity; 29. ​​Push port; 30. Horizontal support platform; 31. Rod body through-hole; 32. Passage channel. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example 1, please refer to Figures 1-8 This invention relates to a tilting device for welding trailer chassis, comprising a support frame 1, with a plurality of horizontally arranged rotating rollers 2 arrayed on the inner side of the support frame 1. The front rotating rollers 2 are driven by a motor. The chassis 10 after the front welding is completed on the top of the rotating rollers 2 is supported by the multiple rotating rollers 2, and the front rotating rollers 2 support the chassis 10. When the front rotating rollers 2 are driven by the motor to rotate in the forward direction, the chassis 10 can be driven to slide on the rotating rollers 2. The support frame 1 has a directional pushing part installed on both sides of the opposite side, and a lifting seat 3 is provided at the end of the support frame 1. A support part is horizontally slidably provided on the lifting seat 3.

[0027] The support frame 1 has L-shaped guide groove 4 and L-shaped guide groove 5 on both sides. The rotating roller 2 near the L-shaped guide groove 5 is driven by a motor (i.e., the front rotating roller 2). The L-shaped guide groove 4 is semi-enclosed on the outside of the L-shaped guide groove 5. A dynamic support member 6 is provided between the L-shaped guide grooves 5 by a corresponding directional pushing part. That is, the dynamic support member 6 is rolled between the two L-shaped guide grooves 5. The movement of the dynamic support member 6 inside the L-shaped guide groove 5 is driven by the directional pushing part at the corresponding position.

[0028] The inner side of the support frame 1 is provided with a flipping assembly 7 that slides between the L-shaped guide groove 4. The flipping assembly 7 moves within the L-shaped guide groove 4 through a counteracting directional pushing part. The bottom of the flipping assembly 7 is provided with a flipping limiting part 8 for rotation. Figure 5 As shown, the initial flipping component 7 is in a vertical state. At this time, the flipping limiting part 8 is installed on the inner side of the flipping component 7 near the bottom. By pushing the frame 10 along the rotating roller 2 towards the flipping component 7, the flat side of the frame 10 can be pushed into the flipping limiting part 8 to achieve the limiting.

[0029] An electric actuator 9 is rotatably mounted between the support and the tilting assembly 7. The arrangement and operation of the electric actuator 9 between the support and the tilting assembly 7 are existing technologies and will not be described in detail here. During the downward movement of the tilting assembly 7 in the vertical state along the L-shaped guide groove 4, the dynamic support member 6 moves downward synchronously to support the bottom of the frame 10. This ensures that the frame 10, which is detached from the rotating roller 2, is always stably supported by the dynamic support member 6, preventing the gradually tilting frame 10 from falling off the tilting assembly 7 during its downward movement. This allows the frame 10 to gradually deflect as it descends synchronously with the tilting assembly 7. The stability of the frame 10 during the flipping process is improved. The frame 10 on the flipping assembly 7 at the end of the L-shaped guide groove 4 completes a 90° flip. At this time, the frame 10 on the flipping assembly 7 is in a vertical state under the limiting action of the dynamic support 6. Then, the electric push rod 9 retracts and drives the flipping assembly 7 to rotate 90° to a horizontal state. At this time, the frame 10, which has completed a 180° flip, is supported inside the flipping assembly 7. In this way, the frame 10 after the initial welding is achieved smoothly. The flipping process will not cause damage to the frame 10, thereby improving the safety of the frame 10 flipping action.

[0030] In this embodiment of the invention, as Figure 2 and Figure 3As shown, motor mounts are installed on both sides of the support frame 1. Servo motors 11 are fixedly mounted on the motor mounts. The output end of the servo motor 11 is connected to the power push frame 12. The direction-changing push part is composed of the servo motor 11 and the power push frame 12. When the servo motor 11 controls the power push frame 12 to rotate, the reciprocating motion of the dynamic support 6 inside the L-shaped guide groove 2 5 or the reciprocating motion of the flipping component 7 between the L-shaped guide groove 1 4 can be realized.

[0031] In this embodiment of the invention, as Figure 2 and Figure 8 As shown, the dynamic support component 6 includes a fixed shaft 13, on which a support roller 14 is rotatably sleeved. Two frame positioning rings 15 are symmetrically fixed on the sides of the support roller 14 and the rotating roller 2. The frame 10 at the top of the rotating roller 2 is limited by the frame positioning rings 15 on both sides, so that the frame 10 will not shift laterally during movement, thereby ensuring that the frame 10 can be horizontally and accurately inserted into the tilting limit part 8. Rollers 16 located in L-shaped guide grooves 2 5 are rotatably provided at both ends of the fixed shaft 13. A guide roller 17 that cooperates with the corresponding power push frame 12 is fixedly installed at one end of the fixed shaft 13.

[0032] In this embodiment of the invention, as Figure 1 and Figure 6 As shown, the flipping assembly 7 includes a lightweight flipping frame 18. Several rotating rollers 19 are rotatably mounted inside the flipping frame 18. Rollers 20 are mounted at both ends of the rotating rollers 19, which are coaxial with the flipping frame 18. The rollers 20 roll within the L-shaped guide groove 4. One end of each roller 20 is fixed with a guide roller 21 that engages with the corresponding power push frame 12. In the initial state, the flipping frame 18 remains upright under the action of the electric push rod 9. Figure 5 As shown, when the corresponding power push frame 12 is rotated counterclockwise by the servo motor 11, the entire flipping assembly 7 can be driven to move downwards gradually.

[0033] In this embodiment of the invention, as Figure 2 As shown, a guide frame 22 is fixedly installed at the end of the bearing frame 1. The lifting seat 3 is slidably disposed inside the guide frame 22. Two horizontal bearing rods 23 are symmetrically slidably disposed on the lifting seat 3. A support seat 24 is fixed between the horizontal bearing rods 23. The support part is composed of the horizontal bearing rods 23 and the support seat 24, as shown. Figure 2 As shown, the cooperation between the horizontal bearing rod 23 and the lifting seat 3 ensures that the support seat 24 and the electric push rod 9 on it can move smoothly horizontally. At the same time, the cooperation between the lifting seat 3 and the guide frame 22 ensures that the support part and the electric push rod 9 on it can move smoothly up and down.

[0034] The tilting frame 18 is connected to the support rod 25 on the side opposite to the rotating roller 2 19 via an ear seat. The bottom of the electric push rod 9 is rotatably mounted on the top of the support base 24. The movable end of the electric push rod 9 is connected to a connecting sleeve that is rotatably sleeved on the support rod 25. Through this structural design, during the downward movement of the roller 20 on the tilting assembly 7 along the vertical section of the L-shaped guide groove 4, the longitudinal sliding cooperation between the lifting seat 3 and the guide frame 22, the horizontal sliding action between the support part and the lifting seat 3, and the rotational connection of the electric push rod 9 between the support rod 25 and the support base 24 can ensure the smooth lifting and lowering movement of the entire tilting assembly 7.

[0035] Example 2, based on specific example 1, such as... Figure 5 and Figure 7 As shown, the flipping limiting part 8 includes a support shaft 26 rotatably disposed inside the flipping frame 18. The support shaft 26 and the flipping frame 18 are tightly rotatably connected to ensure that the flipping limiting part 8 will not rotate when no external force is applied to it. A flipping limiting roller 27 is fixedly sleeved on the support shaft 26. A frame limiting cavity 28 is opened on the circumferential side of the flipping limiting roller 27. A push port 29 is provided inside the frame limiting cavity 28 that passes through the flipping limiting roller 27. In the vertical state, the bottom surface of the frame limiting cavity 28 on the flipping frame 18 is tangent to the top of the rotating roller 2. At this time, the rotating roller 2 at the front end is driven by the motor to rotate in the forward direction. The rotating roller 2 at the front end drives the frame 10 to move along each rotating roller 2 and approach the flipping limiting roller 27 until the flat side of the frame 10 is inserted into the frame limiting cavity 28. The frame limiting cavity 28 is used to limit the flat side of the frame 10.

[0036] In this embodiment of the invention, as Figure 1 As shown, the inner side of the support frame 1 is provided with a frame pusher (not shown in the figure) located below the rotating roller 2. The frame pusher can be a cylinder, hydraulic cylinder or electric push rod. The movable end of the frame pusher is connected to a power push plate that matches the size of the push port 29. When the flipping assembly 7 drives the frame 10 to achieve a 180° flip, the frame 10 is in a horizontal state again. By driving the power push plate to move horizontally back and forth through the frame pusher, the movement of the power push plate in the push port 29 can push the flipped frame 10 away from the flipping assembly 7.

[0037] Furthermore, a horizontal support platform 30 is fixedly installed on the side of the guide frame 22 away from the carrier frame 1. A docking hydraulic cylinder (not shown in the figure) is installed on the side of the horizontal support platform 30 away from the guide frame 22 via a mounting plate. The output end of the docking hydraulic cylinder is connected to a welding platform. The top of both the horizontal support platform 30 and the welding platform is provided with rod openings 31 corresponding to the horizontal carrier rods 23. The rod openings 31 on the welding platform pass through the side of the platform near the guide frame 22. The welding platform is configured to move closer to the tilting frame 18 to receive the tilted frame 10. The top of the horizontal support platform 30 is provided with a passageway 32 that communicates with the rod openings 31. In the initial state, under the action of the docking hydraulic cylinder, the plane side of the welding platform near the guide frame 22 is flush with the inner wall of the passageway 32 (i.e., the inner wall of the passageway 32 near the welding platform is flush with the welding platform), ensuring that the lifting seat 3 and the horizontal carrier rods 23 are not interfered with by the movement of the welding platform and the horizontal support platform 30.

[0038] like Figure 5 As shown, after the horizontal movement of the frame 10 on the control rotating roller 2 achieves insertion and limiting with the frame limiting cavity 28 on the flipping limiting roller 27, the servo motors 11 on both sides of the bearing frame 1 are simultaneously activated. The servo motors 11 control the power push frames 12 on both sides to rotate counterclockwise synchronously. Under the pushing action of the power push frame 12 on the guide roller 21, the roller 20 on the flipping assembly 7, which is in an upright state, is driven to move downwards along the L-shaped guide groove 4. Simultaneously, under the pushing action of the power push frame 12 on the guide roller 17, the roller 16 on the dynamic support 6 is driven to move downwards along the L-shaped guide groove 5. When the roller 20 on the flipping assembly 7, in its upright state, moves to the bottom of the vertical section of the L-shaped guide groove 4, the roller 16 on the dynamic support 6 simultaneously moves to the bottom of the vertical section of the L-shaped guide groove 5 (e.g., ...). Figure 4 As shown in the diagram, at this point, the lifting seat 3 moves to the bottom of the guide frame 22, where the guide frame 22 provides support for the lifting seat 3 and the support unit. The electric actuator 9 then provides stable support for the tilting assembly 7. To ensure the safety and self-consistency of the tilting action of the tilting assembly 7, when the lifting seat 3 moves to the bottom of the guide frame 22, the vertical height from the bottom edge of the tilting assembly 7 to the inner bottom surface of the bearing frame 1 is set as H, and the absolute gyration outer diameter of the tilting frame 18 around the axis of the central roller 20 is set as R. The structural selection of these two components must satisfy the anti-interference spatial relationship: H ≥ R + Δh, where Δh is a safety mechanical margin. This completely eliminates the physical risk of structural interference between the tilting frame 18 and the bottom plate of the bearing frame 1 when the electric actuator 9 retracts.

[0039] After the frame 10 on the control rotating roller 12 moves horizontally and is inserted into the frame limiting cavity 28 on the flipping limiting roller 27, the dynamic support 6 is located at the top of the vertical section of the L-shaped guide groove 25. At this time, the frame 10 is mainly supported by the dynamic support 6 and the flipping limiting roller 27. During the downward movement of the flipping assembly 7 in the vertical state, the dynamic support 6 moves downward synchronously, and the flipping limiting roller 27 supporting the plane side of the frame 10 gradually rotates, causing the frame 10 to gradually rotate. Since the frame 10 is always supported by the dynamic support 6 during the downward movement and rotation, the problem of collision damage during the flipping of the frame 10 is effectively avoided.

[0040] As the power drive frames 12 on both sides of the support frame 1 continue to rotate counterclockwise in sync, the rollers 20 on the upright tilting assembly 7 are driven to move along the horizontal section of the L-shaped guide groove 4, while the rollers 16 on the dynamic support 6 are driven to move along the horizontal section of the L-shaped guide groove 5, until the rollers 20 reach the end of the horizontal section of the L-shaped guide groove 4 and the rollers 16 reach the end of the horizontal section of the L-shaped guide groove 5 (e.g., ...). Figure 2 and Figure 3 As shown), under the limiting action of the support roller 14 on the dynamic support 6, the frame 10 on the tilting assembly 7 is tilted 90° and kept upright. Then, the electric push rod 9 retracts and drives the entire tilting assembly 7 to rotate 90° counterclockwise to a horizontal state. During the rotation of the tilting assembly 7, the frame 10 is tilted and attached to the rotating rollers 19 on the inner side of the tilting frame 18 by the obstruction of the support roller 14. The rotating rollers 19 provide horizontal bottom support for the frame 10 after it has completed a 180° tilt. Figure 1 The diagram shown is of the equipment structure in the stopped state. At the same time, the inner sidewalls of the tilting frame 18 on both sides protrude upwards, forming a rigid lateral limit on the left and right wings of the frame 10. Finally, by controlling the horizontal movement of the welding platform to a set position close to the tilting frame 18, the power push plate is driven to reciprocate horizontally by the frame pusher. Under the guidance of the slide rails on both sides of the tilting frame 18, the tilted frame 10 is pushed onto the welding platform by the movement of the power push plate in the push port 29. This effectively avoids the frame 10 from tilting or falling during the suspended pushing process. Then, the welding platform is controlled to return the tilted frame 10 to its original position, allowing the frame 10 to move above the horizontal support platform 30. Here, welding can continue on the back of the frame 10. When it is necessary to tilt the frame 10 on the rotating roller 2 again, the tilting component 7 is first rotated clockwise to the upright position by the extension movement of the electric push rod 9. The power push frames 12 on both sides are then rotated clockwise synchronously by the servo motor 11 until the tilting component 7 and the dynamic support 6 are moved back to the original position. Figure 5 At the location shown.

[0041] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A tilting device for welding trailer chassis, comprising a support frame (1), wherein a plurality of rotating rollers (2) are arranged in an array on the inner side of the support frame (1); characterized in that, The bearing frame (1) is equipped with a directional pushing part on both sides, and a lifting seat (3) is provided at the end of the bearing frame (1). A support part is provided on the lifting seat (3) in a horizontal sliding manner. The bearing frame (1) is provided with L-shaped guide groove one (4) and L-shaped guide groove two (5) on both sides. L-shaped guide groove one (4) is semi-enclosed on the outside of L-shaped guide groove two (5). A dynamic support member (6) driven by the opposing strain direction pushing part is provided between L-shaped guide groove two (5). The inner side of the bearing frame (1) is provided with a flipping component (7) that is slidably fitted between the L-shaped guide groove (4). The flipping component (7) moves within the L-shaped guide groove (4) by counteracting the directional pushing part. The bottom of the flipping component (7) is provided with a flipping limiting part (8). An electric push rod (9) is rotatably provided between the support part and the flipping assembly (7). During the process of the flipping assembly (7) in the vertical state moving down along the L-shaped guide groove (4), the dynamic support (6) moves down synchronously to support the bottom of the frame (10). The frame (10) on the flipping assembly (7) at the end of the L-shaped guide groove (4) flips 90°. The electric push rod (9) retracts and drives the flipping assembly (7) and the frame (10) to flip to the horizontal state.

2. The tipping device for trailer chassis welding according to claim 1, characterized in that, The support frame (1) has motor mounts on both sides, and a servo motor (11) is fixedly mounted on the motor mount. The output end of the servo motor (11) is connected to a power push frame (12). The direction-changing push part is composed of the servo motor (11) and the power push frame (12).

3. A tilting device for welding trailer chassis according to claim 2, characterized in that, The dynamic support component (6) includes a fixed shaft (13), on which a support roller (14) is rotatably sleeved. Two frame positioning rings (15) are symmetrically fixed on the sides of the support roller (14) and the rotating roller (2). Rollers (16) located in the L-shaped guide groove (5) are rotatably installed at both ends of the fixed shaft (13). A guide roller (17) that cooperates with the corresponding power push frame (12) is fixedly installed at one end of the fixed shaft (13).

4. A tilting device for welding trailer chassis according to claim 2, characterized in that, The flipping assembly (7) includes a flipping frame (18). Several rotating rollers (19) are rotatably provided inside the flipping frame (18). Rollers (20) are installed at both ends of the rotating rollers (19) that are coaxial with the flipping frame (18). The rollers (20) roll in the L-shaped guide groove (4). One of the rollers (20) has a guide roller (21) fixed at its end, which is fitted inside the corresponding power push frame (12).

5. A tilting device for welding trailer chassis according to claim 4, characterized in that, The bearing frame (1) is fixedly installed with a guide frame (22) at its end. The lifting seat (3) is slidably disposed inside the guide frame (22). Two horizontal bearing rods (23) are symmetrically slidably disposed on the lifting seat (3). A support seat (24) is fixed between the horizontal bearing rods (23). The support part is composed of the horizontal bearing rods (23) and the support seat (24). The flipping frame (18) is connected to a support rod (25) on one side of the rotating roller (19) via an ear seat. The bottom of the electric push rod (9) is rotatably mounted on the top of the support seat (24). The movable end of the electric push rod (9) is connected to a connecting sleeve that is rotatably sleeved on the support rod (25).

6. A tilting device for welding trailer chassis according to claim 5, characterized in that, The flipping limiting part (8) includes a support shaft (26) rotatably disposed inside the flipping frame (18). A flipping limiting roller (27) is fixedly sleeved on the support shaft (26). A frame limiting cavity (28) is opened on the circumferential side of the flipping limiting roller (27). A push port (29) penetrating the flipping limiting roller (27) is provided inside the frame limiting cavity (28). The bottom surface of the frame limiting cavity (28) on the flipping frame (18) in the vertical state is tangent to the top of the rotating roller (2).

7. A tilting device for trailer chassis welding according to claim 6, characterized in that, The inner side of the bearing frame (1) is provided with a frame pusher located below the rotating roller (2). The movable end of the frame pusher is connected to a power push plate that is adapted to the size of the push port (29). The power push plate is used to push the frame (10) on the horizontal flipping frame (18) after it has been flipped to move towards the guide frame (22).

8. A tilting device for welding trailer chassis according to claim 5, characterized in that, A horizontal support platform (30) is fixedly installed on the side of the guide frame (22) away from the bearing frame (1). A docking hydraulic cylinder is installed on the side of the horizontal support platform (30) away from the guide frame (22) via a mounting plate. The output end of the docking hydraulic cylinder is connected to a welding platform. The top of the horizontal support platform (30) and the welding platform are provided with rod openings (31) corresponding to the horizontal bearing rods (23). The welding platform is configured to move closer to the tilting frame (18) to support the tilted frame (10). The top of the horizontal support platform (30) is provided with a passageway (32) that communicates with the rod openings (31).

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