A body support device for a chassis line lift in general assembly.

Abstract

The present invention discloses a vehicle body supporting device for a chassis line elevator for final assembly, comprising a mounting seat, a frame provided on the mounting seat, a front supporting arm and a rear supporting arm provided at both ends of the frame, a front supporting block provided at the end of the front supporting arm, a rear supporting block provided at the end of the rear supporting arm, and a limiting structure provided on the rear supporting block. By adopting the vehicle body supporting device for a chassis line elevator for final assembly of the present invention, the X-direction limiting of the vehicle body side skirt is achieved, the positioning accuracy of the vehicle body is improved, and the stability of the vehicle body transfer is ensured.

Description

Technical Field

[0001] This invention belongs to the field of automobile chassis line assembly. Specifically, this invention relates to a body support device for a chassis line lifting machine. Background Technology

[0002] With the rapid development of the automotive industry, the requirements for the flexibility of automotive production lines are becoming increasingly stringent. The transfer of car bodies between different functional lines is mostly accomplished using lifts. To ensure the smooth transfer of the car body, the positioning accuracy of the car body is particularly critical. During the transfer of the car body from the chain conveyor line to the chassis line lifting device, the front / rear support arms need to lift the car body on the continuously moving chain conveyor line and then move backward to adjust to the correct lifting position. However, when the support arms move backward to adjust the lifting position, the car body will shift backward on the support arms due to inertia. This causes inaccurate positioning of the car body and lifting device during the transfer process, and the car body deviates from the predetermined position. Under mechanical pressure, this can lead to damage to the car body or equipment.

[0003] Utility model patent CN208745866U, published on April 16, 2019, discloses a vehicle body support device. The device includes a base plate, with hydraulic telescopic support rods fixed to one side of the base plate's bottom end and a first hinge shaft fixed to the other side. Universal wheels are fixed to the bottom ends of both the first hinge shaft and the hydraulic telescopic support rods. A connecting plate is fixed to the left side of the base plate, with locking blocks fixed to both ends of the left side of the connecting plate. An operation button is located on the right side of the front of the base plate, and screws are located on the base plate to the left of the operation button. Protective frames are fixed to both sides of the top of the base plate, and rails are provided on the base plate inside the protective frames. However, this vehicle body support device does not solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a vehicle body support device for a general assembly chassis line lift that enables X-direction limiting of the vehicle body side skirts, improves vehicle body positioning accuracy, and ensures the stability of vehicle body rotation.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] The chassis support device of the assembly line lift includes a mounting base, a frame on the mounting base, a front support arm and a rear support arm at both ends of the frame, a front support block at the end of the front support arm, a rear support block at the end of the rear support arm, and a limiting structure on the rear support block.

[0007] The mounting base is fixedly connected to the bottom of a first cylinder. The piston rod end of the first cylinder is connected to the frame. The mounting base is provided with guide rails on both sides. The top of both ends of the frame is provided with connecting blocks. The inner side of the connecting blocks is provided with sliders. The sliders cooperate with the guide rails.

[0008] The limiting structure includes a limiting step, and the rear support block has limiting protrusions on both sides. The end of the limiting step is connected to the limiting protrusion to form an anti-reverse groove.

[0009] The frame is connected to the front support arm by a second cylinder, which is fixedly connected to the frame. The piston rod of the second cylinder is connected to the top of the front support arm. The frame is connected to the rear support arm by a third cylinder, which is connected to the top of the rear support arm. Both the second and third cylinders are horizontally arranged.

[0010] The inner side of the limiting step is provided with a positioning surface, which has a stepped structure.

[0011] Limiting blocks are provided on both sides of the top of the front support block.

[0012] The front support block is connected to the end of the front support arm with a bracket, and the bottom of the bracket is provided with a waist-shaped hole; the side of the front support arm is fixedly connected with a support leg, and the support leg is set perpendicular to the front support arm.

[0013] Both the front support block and the rear support block are provided with mounting holes.

[0014] The mounting base is equipped with a support frame on top.

[0015] The front support arm, rear support arm, and outriggers are all square tube structures, and the frame and mounting base are constructed by welding square tubes.

[0016] The technical effects of this invention are as follows: The body support device of the assembly chassis line lift of this invention moves the frame position through the first cylinder, ensuring that the front / rear support blocks are adjusted to the correct lifting position. Both the front and rear support arms can extend and retract in the Y direction, which is highly versatile and meets the lifting requirements. The rear support block is also designed and optimized to limit the side skirt of the body in the X direction, which improves the positioning accuracy of the body and helps to ensure the smooth progress of the body transfer process. It solves the problem of the side skirt shifting backward on the support arm due to inertia, ensuring the stability of the body and the lifting device during the transfer process. At the same time, it stabilizes the body posture and center of gravity position, preventing mechanical compression from damaging the body or equipment. Attached Figure Description

[0017] This manual includes the following figures, which illustrate the following:

[0018] Figure 1 This is a schematic diagram of the body support device of the final assembly chassis line lift of the present invention;

[0019] Figure 2 This is a partial structural schematic diagram of the vehicle body support device of the present invention;

[0020] Figure 3 This is a schematic diagram showing the connection between the frame and the mounting base of the present invention;

[0021] Figure 4 This is a front view of the front support arm of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the rear support arm of the present invention;

[0023] Figure 6 This is a schematic diagram of the front support block of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the rear support block of the present invention.

[0025] The markings in the diagram are as follows: 1. Mounting base; 11. First cylinder; 12. Support frame; 13. Guide rail; 2. Frame; 21. Connecting block; 22. Slider; 3. Front support arm; 31. Second cylinder; 32. Support leg; 33. Bracket; 34. Waist-shaped hole; 4. Rear support arm; 41. Third cylinder; 5. Front support block; 51. Limiting block; 52. Mounting hole; 6. Rear support block; 61. Limiting protrusion; 62. Limiting step; 63. Anti-reverse groove; 64. Positioning surface. Detailed Implementation

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention, and to facilitate its implementation.

[0027] like Figures 1 to 3 As shown, the body support device of the chassis line lift includes a mounting base 1, a frame 2 on the mounting base 1, a front support arm 3 and a rear support arm 4 at both ends of the frame 2 respectively, a front support block 5 at the end of the front support arm 3, a rear support block 6 at the end of the rear support arm 4, and a limiting structure on the rear support block 6.

[0028] Both the plate chain support and the chassis line lifting device use a front-support, rear-support method for the vehicle body. The lifting platform uses a front support arm 3 to support the front longitudinal beam and a rear support arm 4 to support the bottom of the vehicle body skirt. The support blocks on the rear support arm 4 are designed to match the rear skirt of the planned vehicle model, meeting the needs of both existing and future planned models. Front and rear support points of the plate chain are set between the mounting seats 1. The vehicle body is transported along the plate chain by transferring from the front and rear support points to the front and rear support blocks. The overall vehicle body support device has a symmetrical structure. A pair of front support blocks 5 correspond to the front longitudinal beams on both sides of the vehicle body, and a pair of rear support blocks 6 correspond to the side skirts on both sides of the vehicle body. That is, the entire vehicle body is supported by four support points, ensuring the stability of subsequent transportation and lifting processes.

[0029] like Figure 2 and Figure 3As shown, a first cylinder 11 is fixedly connected to the bottom of the mounting base 1. The piston rod end of the first cylinder 11 is connected to the frame 2. Guide rails 13 are provided on both sides of the mounting base 1, and connecting blocks 21 are provided at the top of both ends of the frame 2. A slider 22 is provided on the inner side of the connecting block 21, and the slider 22 cooperates with the guide rails 13. When the vehicle body lands on the front / rear support point of the chain, the first cylinder 11 drives the frame 2 to move in the X direction. The front support arm 3 and the rear support arm 4 move synchronously with the frame 2. The cooperation between the slider 22 and the guide rail 13 guides the linear movement of the frame 2, realizing the X-direction position adjustment of the front support block 5 and the rear support block 6, and meeting the accuracy requirements of the vehicle body lifting position. The combination of the X-direction movement of the frame 2 and the X-direction limiting function of the rear support block 6 ensures that the side skirt of the vehicle body accurately contacts the limiting step 62, thereby solving the problem of inaccurate positioning caused by the backward movement of the vehicle body due to inertia, and ensuring the positioning accuracy of the vehicle body. If the vehicle body is not properly aligned on the chain track, the X-axis lifting position of the front support arm 3 and the rear support arm 4 can be adjusted by controlling the position of the drive frame 2 of the first cylinder 11. This allows the front support block 5 and the rear support block 6 to align with the front longitudinal beam and side skirt of the vehicle body, respectively, achieving accurate alignment.

[0030] like Figure 7 As shown, the limiting structure includes a limiting step 62, and limiting protrusions 61 are provided on both sides of the rear support block 6. The end of the limiting step 62 is connected to the limiting protrusions 61 to form an anti-backlash groove 63. When the side skirt falls on the anti-backlash groove 63, the two limiting protrusions 61 have the function of limiting the side skirt in the Y direction, and the limiting step 62 abuts against the end of the side skirt to achieve its unidirectional X-direction limitation, which prevents the vehicle body from moving backward, thereby improving the positioning accuracy and ensuring the smooth progress of subsequent lifting and transposition processes.

[0031] like Figure 4 and Figure 5 As shown, a second cylinder 31 is connected to the front support arm 3 via the frame 2. The second cylinder 31 is fixedly connected to the frame 2, and its piston rod is connected to the top of the front support arm 3. A third cylinder 41 is connected to the rear support arm 4 via the frame 2, and its piston rod is connected to the top of the rear support arm 4. Both the second cylinder 31 and the third cylinder 41 are horizontally positioned. The second cylinder 31 drives and controls the Y-axis extension and retraction of the front support arm 3, and the third cylinder 41 drives and controls the Y-axis extension and retraction of the rear support arm 4, thereby supporting vehicles of different widths and improving the versatility of the device. The horizontal positioning of both cylinders ensures that the end faces of the connected front support block 5 and rear support block 6 are horizontal, thus ensuring reliable vehicle positioning accuracy and preventing vehicle instability or displacement that could lead to damage to the vehicle or equipment. Guide rails 13 are also arranged on the sides of both ends of the frame 2, which cooperate with the inner sides of the front support arm 3 and the rear support arm 4, providing accurate guidance and horizontal support for their extension and retraction.

[0032] like Figure 7As shown, the inner side of the limiting step 62 is provided with a positioning surface 64, which has a stepped structure. In the above structure, multiple positioning surfaces 64 are formed on the inner side of the limiting step 62. Different models correspond to different stop positions, thereby meeting the production needs of multiple models on the current chassis line. Similarly, a multi-step form can be set to meet the co-production of more models. Driven by the second cylinder 31 and the third cylinder 41, the front support arm 3 and the rear support arm 4 can move in the Y direction, thus ensuring that the side skirts of different models can accurately contact the corresponding positioning surfaces 64. The inner side of each limiting step 62 includes multiple positioning surfaces 64. The positioning surfaces 64 are designed with inclined surfaces at the step connection to ensure a smooth transition between the positioning surfaces 64. This facilitates the side skirts to be guided along the inclined surfaces to the adjacent positioning surfaces 64 during planar adjustment. The inclined surface design also avoids damage to the side skirts of the vehicle body.

[0033] like Figure 6 As shown, the front support block 5 has limiting blocks 51 on both sides of its top. The two limiting blocks 51 limit the front longitudinal beam of the vehicle body in the Y direction to prevent the front longitudinal beam from coming off.

[0034] like Figure 6 As shown, a bracket 33 is connected to the end of the front support block 5 and the front support arm 3, and the bottom of the bracket 33 has an oblong hole 34; a support leg 32 is fixedly connected to the side of the front support arm 3, and the support leg 32 is set perpendicular to the front support arm 3. The bracket 33 increases the installation height of the front support block 5, so that the front support block 5 is stably supported at the bottom of the front longitudinal beam of the vehicle body, which helps to maintain the vehicle body level and stabilize the center of gravity of the vehicle body. The oblong hole 34 allows for minor adjustments to the installation position of the bracket 33. The support leg 32 can abut against the crossbeam of the vehicle body, which has an X-axis positioning effect and further improves the positioning accuracy of the vehicle body.

[0035] like Figure 6 and Figure 7 As shown, both the front support block 5 and the rear support block 6 are provided with mounting holes 52. The mounting holes 52 on both the front support block 5 and the rear support block 6 facilitate disassembly. The front support block 5 can be manufactured with a corresponding width according to the width of the front longitudinal beam of different vehicle models, and the rear support block 6 can be manufactured with a corresponding limiting step 62 according to the width and length of the side skirt of different vehicle models. Therefore, only the front support block 5 and the rear support block 6 need to be replaced to meet the production needs of another vehicle model, saving design and development costs and improving the versatility of the device.

[0036] like Figure 1 and Figure 2 As shown, the mounting base 1 has a support frame 12 on top. The two ends of the support frame 12 are triangular structures to ensure the stability of the vehicle body during the rolling process.

[0037] like Figures 1 to 3As shown, the front support arm 3, rear support arm 4, and outrigger 32 are all square tube structures, while the frame 2 and mounting base 1 are constructed from welded square tubes. The use of square tubes in the main structure allows for rapid assembly and fixing, improving overall strength, maintaining structural stability, ensuring component assembly accuracy, reducing the need for additional connectors or fasteners, minimizing installation steps, and lowering costs.

[0038] Workflow for transferring the vehicle body to the chassis line lifting device via a chain conveyor belt: 1. The vehicle body moves to the lifting area on the chain conveyor belt support, while the chassis line lifting device moves to the designated position on the lifting device and opens → 2. The lifting system detects the running position of the chain conveyor belt → 3. The front / rear support arms move forward Y to the designated position → 4. The front / rear support arms move forward synchronously with the chain conveyor support legs 32 to the designated position → 5. The front / rear support arms lift the vehicle body to the designated height and disengage from the chain conveyor support legs 32 → 6. The first cylinder 11 pushes the front / rear support arms in the X direction to the designated rising position → 7. The front / rear support arms rise to the designated position → 8. The chassis line lifting device closes, and the lifting device locking device locks → 9. The front / rear support arms fall to the designated position, and the vehicle body falls onto the front support point and rear support of the lifting device → 10. The locking device opens, and the front / rear support arms slowly descend and retract to the designated position → 11. The front / rear support arms descend to the designated position, and all mechanisms reset.

[0039] In step 6 above, regarding the process of transferring the vehicle body to the chassis line lifting device via the chain conveyor, the following applies to the previous rear support block 6: Since the front / rear support blocks of the front / rear support arms use a conventional structure and have no limit function, when the front / rear support arm return cylinder pushes in the X direction, the side skirt of the vehicle body will shift by 3-5mm on the support block due to inertia, resulting in the vehicle body falling into the wrong support point of the lifting device.

[0040] After adopting the improved rear support block 6: The structure of the rear support block 6 is optimized, and a backstop groove 63 is formed on the rear support block 6 to facilitate the falling of the vehicle side skirt. When the front / rear support arm return cylinder pushes in the X direction, the end of the vehicle side skirt will be blocked by the limiting step 62, thus avoiding the phenomenon of the vehicle side skirt shifting backward.

[0041] The chassis support device of this assembly line lift uses the first cylinder 11 to move the frame 2, ensuring that the front / rear support blocks are adjusted to the correct lifting position. Both the front and rear support arms can extend and retract in the Y direction, which is highly versatile and meets the lifting requirements. The rear support block 6 has also been designed and optimized to limit the side skirt of the vehicle body in the X direction, which improves the positioning accuracy of the vehicle body and helps to ensure the smooth operation of the vehicle body during the transfer process. It solves the problem of the vehicle body shifting backward on the support arm due to inertia, ensuring the stability of the vehicle body and the lifting equipment during the transfer process. At the same time, it stabilizes the posture and center of gravity of the vehicle body and prevents mechanical crushing from damaging the vehicle body or equipment.

[0042] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A vehicle body support device for a chassis line lifting machine, characterized in that: The system includes a mounting base (1), on which a frame (2) is provided. The frame (2) has a front support arm (3) and a rear support arm (4) at both ends. The front support arm (3) has a front support block (5) at its end, and the rear support arm (4) has a rear support block (6) at its end. The rear support block (6) has a limiting structure. A first cylinder (11) is fixedly connected to the bottom of the mounting base (1). The piston rod end of the first cylinder (11) is connected to the frame (2). Guide rails (13) are provided on both sides of the mounting base (1), and connecting blocks are provided at the top of both ends of the frame (2). (21) The inner side of the connecting block (21) is provided with a slider (22), which cooperates with the guide rail (13); the limiting structure includes a limiting step (62), the two sides of the rear support block (6) are provided with limiting protrusions (61), and the end of the limiting step (62) is connected with the limiting protrusions (61) to form a backstop groove (63); the inner side of the limiting step (62) is provided with a positioning surface (64), which is a stepped structure; the positioning surface (64) is designed with a slope at the step connection to bridge the gap, so as to ensure a smooth transition between the positioning surfaces (64).

2. The body support device for the final assembly chassis line lift according to claim 1, characterized in that: The frame (2) is connected to the front support arm (3) by a second cylinder (31), the second cylinder (31) is fixedly connected to the frame (2), and the piston rod of the second cylinder (31) is connected to the top of the front support arm (3); the frame (2) is connected to the rear support arm (4) by a third cylinder (41), the piston rod of the third cylinder (41) is connected to the top of the rear support arm (4), and both the second cylinder (31) and the third cylinder (41) are horizontally arranged.

3. The body support device for the final assembly chassis line lift according to claim 1, characterized in that: The front support block (5) has limit blocks (51) on both sides of its top.

4. The body support device for the final assembly chassis line lift according to any one of claims 1-3, characterized in that: The front support block (5) is connected to the end of the front support arm (3) by a bracket (33), and the bottom of the bracket (33) is provided with a waist-shaped hole (34); the side of the front support arm (3) is fixedly connected to a support leg (32), and the support leg (32) is perpendicular to the front support arm (3).

5. The body support device for the final assembly chassis line lift according to claim 4, characterized in that: Both the front support block (5) and the rear support block (6) are provided with mounting holes (52).

6. The body support device for the final assembly chassis line lift according to claim 1, characterized in that: The mounting base (1) is provided with a support frame (12) on top.

7. The body support device for the final assembly chassis line lift according to claim 4, characterized in that: The front support arm (3), rear support arm (4) and outrigger (32) are all square tube structures, and the frame (2) and mounting base (1) are made of welded square tubes.

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