Vehicle body supporting device of general assembly chassis line elevator

Abstract

The invention discloses a vehicle body supporting device of a general assembly chassis line elevator, which comprises a mounting seat, a frame is arranged on the mounting seat, a front supporting arm and a rear supporting arm are respectively arranged at two ends of the frame, a front supporting block is arranged at the end part of the front supporting arm, a rear supporting block is arranged at the end part of the rear supporting arm, and a limiting structure is arranged on the rear supporting block. By the adoption of the vehicle body supporting device of the general assembly chassis line elevator, X-direction limiting of the side skirt of the vehicle body is achieved, the positioning precision of the vehicle body is improved, and the rotating and hanging stability of the vehicle body is guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of automobile chassis line final assembly, and in particular relates to a vehicle body supporting device of a final assembly chassis line lifter. Background Art

[0002] With the rapid development of automobiles, the requirements for the flexibility of automobile production lines are getting higher and higher. The transfer of car bodies between different functional lines is mostly completed by elevators. In order to ensure the smooth transfer of car bodies, the positioning accuracy of the car bodies is particularly critical. In the process of transferring the car bodies from the plate chain line to the chassis line hoist, the front / rear supporting arms need to lift the car bodies on the continuously moving plate chain line and then retreat to adjust to the correct lifting position. However, when the supporting arms retreat to adjust the lifting position, the car bodies will shift backwards on the supporting arms due to inertia, causing inaccurate positioning of the car bodies and hoisting equipment during the transfer process, and the car bodies deviate from the predetermined position, which will cause damage to the car bodies or equipment under mechanical squeezing.

[0003] The utility model patent with publication number CN208745866U was published on April 16, 2019. The name of the automobile body support device includes a bottom plate, a hydraulic telescopic support rod is fixed on one side of the bottom end of the bottom plate, a first hinge shaft is fixed on the other side of the bottom end of the bottom plate, universal wheels are fixed on the bottom ends of the first hinge shaft and the hydraulic telescopic support rod, a connecting plate is fixed on the left side of the bottom plate, blocks are fixed on both ends of the left side of the connecting plate, an operation button is set on the right side of the front of the bottom plate, a screw is set on the bottom plate to the left of the operation button, a guard frame is fixed on both sides of the top of the bottom plate, and a track is set on the bottom plate inside the guard frame. The automobile body support device also cannot solve the technical problems recorded above. Summary of the invention

[0004] The purpose of the present invention is to provide a body support device for an assembly chassis line lifter that can limit the X-axis position of a body skirt, improve the positioning accuracy of the body, and ensure the stability of the body transfer and hanging in view of the deficiencies in the prior art.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The body supporting device of the final assembly chassis line lift comprises a mounting seat, a frame is provided on the mounting seat, a front supporting arm and a rear supporting arm are respectively provided at both ends of the frame, a front supporting block is provided at the end of the front supporting arm, a rear supporting block is provided at the end of the rear supporting arm, and a limiting structure is provided on the rear supporting block.

[0007] A first cylinder is fixedly connected to the bottom of the mounting seat, the piston rod end of the first cylinder is connected to the frame, guide rails are provided on both sides of the mounting seat, connecting blocks are provided on the top of both ends of the frame, a sliding block is provided inside the connecting block, and the sliding block cooperates with the guide rail.

[0008] The limiting structure comprises a limiting step, and limiting protrusions are arranged on both sides of the rear supporting block. The end of the limiting step is connected to the limiting protrusion to form a retreat-stopping groove.

[0009] The frame is connected to the front supporting arm with a second cylinder, the second cylinder is fixedly connected to the frame, and the piston rod of the second cylinder is connected to the top of the front supporting arm; the frame is connected to the rear supporting arm with a third cylinder, the piston rod of the third cylinder is connected to the top of the rear supporting arm, and the second cylinder and the third cylinder are both horizontally arranged.

[0010] A positioning surface is provided on the inner side of the limiting step, and the positioning surface is a stepped structure.

[0011] Limit blocks are arranged on both sides of the top of the front supporting block.

[0012] The front supporting block and the end of the front supporting arm are connected with a bracket, and a waist-shaped hole is arranged at the bottom of the bracket; the side of the front supporting arm is fixedly connected with a supporting leg, and the supporting leg is vertically arranged with the front supporting arm.

[0013] The front supporting block and the rear supporting block are both provided with mounting holes.

[0014] A support frame is provided on the top of the mounting seat.

[0015] The front supporting arm, the rear supporting arm and the supporting legs are all square tube structures, and the frame and the mounting seat are formed by welding square tubes.

[0016] The technical effect of the present invention is as follows: the body supporting device of the general assembly chassis line lift of the present invention is adopted, and the position of the frame is moved by the first cylinder to ensure that the front / rear supporting blocks are adjusted to the correct lifting position, and the front / rear supporting arms can be extended and retracted in the Y direction, with high versatility to meet the lifting needs. The rear supporting block is also designed and optimized to achieve X-direction limitation of the body side skirt, thereby improving the positioning accuracy of the body, which is conducive to ensuring the smooth transfer process of the body, and solving the problem of the side skirt moving backward on the supporting arm due to inertia, thereby ensuring the stability of the body and the sling during the transfer process, and at the same time stabilizing the body posture and center of gravity position to prevent mechanical extrusion from causing damage to the body or equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] This specification includes the following drawings, which show the following contents:

[0018] Figure 1 It is a structural schematic diagram of a vehicle body supporting device of a general assembly chassis line lifter of the present invention;

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

[0020] Figure 3 It is a schematic diagram of the connection between the frame and the mounting seat of the present invention;

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

[0022] Figure 5 It is a structural schematic diagram of the rear supporting arm of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the front supporting block of the present invention;

[0024] Figure 7 It is a structural schematic diagram of the rear supporting block of the present invention.

[0025] Markings in the figure are: 1. mounting seat; 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. limit block; 52. mounting hole; 6. rear support block; 61. limit protrusion; 62. limit step; 63. stop groove; 64. positioning surface. DETAILED DESCRIPTION

[0026] The specific implementation methods of the present invention are further explained in detail below by describing the embodiments with reference to the accompanying drawings, with the aim of helping 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 facilitating their implementation.

[0027] like Figures 1 to 3 As shown, the body supporting device of the final assembly chassis line elevator includes a mounting seat 1, a frame 2 is provided on the mounting seat 1, a front supporting arm 3 and a rear supporting arm 4 are respectively provided at both ends of the frame 2, a front supporting block 5 is provided at the end of the front supporting arm 3, a rear supporting block 6 is provided at the end of the rear supporting arm 4, and a limiting structure is provided on the rear supporting block 6.

[0028] The body of the plate chain line support and chassis line hoist adopts the front support and rear support method. The lift uses the front support arm 3 to lift the front longitudinal beam, and the rear support arm 4 to lift the bottom of the body skirt. The support block on the rear support arm 4 is designed to match the rear skirt of the planned vehicle model to meet the use of existing models and future planned models. The front / rear support points of the plate chain of the plate chain line are set between the mounting seats 1. The body is transported from the front / rear support points of the plate chain to the front / rear support blocks during the transportation of the plate chain line. The overall body support device is a symmetrical structure. A pair of front support blocks 5 correspond to the front longitudinal beams on both sides of the body, and a pair of rear support blocks 6 correspond to the side skirts on both sides of the body, that is, the body as a whole is supported by four support points, ensuring the stability of the subsequent transportation and lifting process.

[0029] like Figure 2 and Figure 3As shown, the bottom of the mounting seat 1 is fixedly connected with a first cylinder 11, 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 seat 1, and connecting blocks 21 are provided at the top of both ends of the frame 2. A slider 22 is provided inside the connecting block 21, and the slider 22 cooperates with the guide rail 13. When the vehicle body falls on the front / rear fulcrum of the plate chain, the first cylinder 11 drives and controls the overall X-direction movement of the frame 2, and the front supporting arm 3 and the rear supporting arm 4 move synchronously with the frame 2. The cooperation of the slider 22 and the guide rail 13 guides the linear movement of the frame 2, and the X-direction position adjustment of the front supporting block 5 and the rear supporting block 6 is realized, meeting the accuracy requirements of the vehicle body lifting position. The above-mentioned X-direction movement of the frame 2 is combined with the X-direction limit function of the rear supporting block 6 to ensure that the side skirt of the vehicle body accurately contacts the limit step 62, thereby solving the problem of inaccurate positioning caused by the rearward movement of the vehicle body due to inertia, and the positioning accuracy of the vehicle body is guaranteed. If the body is not aligned correctly on the plate chain, the position of the first cylinder 11 driving the frame 2 can be controlled to adjust the X-axis lifting position of the front support arm 3 and the rear support arm 4, so that the front support block 5 and the rear support block 6 are respectively aligned with the front longitudinal beam and the side skirt of the body to achieve 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 ends of the limiting step 62 are connected to the limiting protrusions 61 to form a stop groove 63. When the side skirt falls on the stop groove 63, the two limiting protrusions 61 have the function of limiting the side skirt of the vehicle body in the Y direction, and the limiting step 62 abuts against the end of the side skirt to achieve its unidirectional X-direction limiting, that is, preventing the phenomenon of the vehicle body moving backward, achieving the purpose of improving the positioning accuracy, and ensuring the smooth progress of the subsequent lifting and transfer process.

[0031] like Figure 4 and Figure 5 As shown, the frame 2 is connected to the front support arm 3 with 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 with a third cylinder 41, the piston rod of the third cylinder 41 is connected to the top of the rear support arm 4, and the second cylinder 31 and the third cylinder 41 are both arranged horizontally. The second cylinder 31 drives and controls the Y-direction extension and contraction of the front support arm 3, and the third cylinder 41 drives and controls the Y-direction extension and contraction of the rear support arm 4, so as to lift the vehicle bodies of different vehicle widths and improve the versatility of the device. The above two cylinders are both arranged horizontally to ensure that the end faces of the connected front support block 5 and rear support block 6 are horizontal, thereby ensuring reliable positioning accuracy of the vehicle body, and avoiding the vehicle body or equipment being squeezed and damaged due to unstable or offset posture of the vehicle body. Among them, guide rails 13 are also arranged on the sides of both ends of the frame 2, and the inner sides of the front support arm 3 and the rear support arm 4 cooperate with them to provide accurate guidance and horizontal support for the telescopic movement process of the two.

[0032] like Figure 7As shown, a positioning surface 64 is provided on the inner side of the limiting step 62, and the positioning surface 64 is a stepped structure. In the above structure, a plurality of positioning surfaces 64 are formed on the inner side of the limiting step 62, and different models correspond to different stop positions, so as to meet the production needs of multiple models on the current chassis line. Similarly, a multi-step form can also be set to meet the co-production of more models. With the help of the drive of the second cylinder 31 and the third cylinder 41, the front support arm 3 and the rear support arm 4 can be moved in the Y direction, so that the side skirts of different models can accurately contact the corresponding positioning surface 64. Each limiting step 62 includes a plurality of positioning surfaces 64 on the inner side, and the positioning surfaces 64 are designed with inclined surfaces at the step connection for bridging to ensure a smooth transition between the positioning surfaces 64, so as to facilitate the side skirts to be guided to the adjacent positioning surfaces 64 along the inclined surface when the plane is adjusted. The design of the inclined surface also avoids damage to the side skirts of the vehicle body.

[0033] like Figure 6 As shown, limit blocks 51 are provided on both sides of the top of the front supporting block 5. The two limit blocks 51 limit the front longitudinal beam of the vehicle body in the Y direction to prevent the front longitudinal beam from coming out.

[0034] like Figure 6 As shown, the front support block 5 is connected to the end of the front support arm 3 by a bracket 33, and a waist-shaped hole 34 is provided at the bottom of the bracket 33; the side of the front support arm 3 is fixedly connected to a support leg 32, and the support leg 32 is vertically arranged with 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 can be stably supported to the bottom of the front longitudinal beam of the vehicle body, which is conducive to maintaining the level of the vehicle body and stabilizing the center of gravity of the vehicle body. The waist-shaped hole 34 can facilitate the bracket 33 to slightly adjust the installation position. The support leg 32 can abut against the cross beam of the vehicle body, play an X-direction positioning effect, and further improve 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. Both the front support block 5 and the rear support block 6 are provided with mounting holes 52 to 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 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 models. Therefore, only the front support block 5 and the rear support block 6 need to be replaced to meet the production of another model, saving design and development costs, and the lifting device has high versatility.

[0036] like Figure 1 and Figure 2 As shown, a support frame 12 is provided on the top of the mounting seat 1. The two ends of the support frame 12 are tripod structures to ensure the stability of the vehicle body transfer process.

[0037] like Figures 1 to 3As shown, the front supporting arm 3, the rear supporting arm 4 and the supporting leg 32 are all square tube structures, and the frame 2 and the mounting seat 1 are formed by welding square tubes. The main body of the above structure adopts a square tube structure, which can be quickly assembled and fixed, can improve the overall strength, maintain the stability of the structure, and is conducive to ensuring the assembly accuracy of parts, reducing the use of additional connectors or fasteners, reducing installation links and reducing costs.

[0038] The working process of transferring the body of the plate chain line to the chassis line hoist: 1. The body moves on the plate chain line support to the elevator area, and the chassis line hoist runs to the designated position of the elevator and opens the hoist → 2. The elevator system detects the running position of the plate chain → 3. The front / rear support arm Y rises forward to the designated position → 4. The front / rear support arm moves synchronously with the plate chain support leg 32 to the designated position → 5. The front / rear support arm lifts the body to the designated height and disengages from the plate chain support leg 32 → 6. The first cylinder 11X pushes the front / rear support arm in the reverse direction to the designated rising position → 7. The front / rear support arm rises to the designated position → 8. The chassis line hoist is closed, and the hoist locking device is locked → 9. The front / rear support arm falls to the designated position and the body falls into the front fulcrum and rear support of the hoist → 10 The locking device opens and locks, and the front / rear support arm slowly descends and retracts to the designated position → 11. The front / rear support arm descends to the designated position, and each mechanism is reset.

[0039] In the above step 6, for the work flow of transferring the body of the plate chain line to the chassis line hoist, during the use of the rear support block 6 before improvement: since the front / rear support blocks of the front / rear support arms adopt conventional structures without unlimited position functions, when the return cylinder of the front / rear support arms pushes back in the X direction, the side skirts of the body will be displaced by 3-5mm on the support blocks due to inertia, resulting in the body falling into the wrong fulcrum before the hoist.

[0040] After adopting the improved rear supporting block 6: the structure of the rear supporting block 6 is optimized, and a stop groove 63 is manufactured on the rear supporting block 6 to facilitate the falling of the body side skirt. When the front / rear supporting arm return cylinder pushes back in the X direction, the end of the body side skirt will be blocked by the limiting step 62, avoiding the backward displacement of the body side skirt.

[0041] The body supporting device of the final assembly chassis line lift moves the position of the frame 2 through the first cylinder 11 to ensure that the front / rear supporting blocks are adjusted to the correct lifting position. The front / rear supporting arms can be extended and retracted in the Y direction, with high versatility to meet the lifting needs. The rear supporting block 6 is also designed and optimized to achieve X-direction limitation of the body side skirts, thereby improving the positioning accuracy of the body and facilitating a smooth transfer process of the body. The problem of rearward movement of the body on the supporting arm due to inertia is solved, and the stability of the body and the sling during the transfer process is ensured. At the same time, the body posture and center of gravity are stabilized to prevent mechanical extrusion from causing damage to the body or equipment.

[0042] The present invention is described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention; or the above concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A vehicle body support device for a chassis line lift of an assembly line, characterized in that: The invention comprises a mounting seat (1), wherein a frame (2) is provided on the mounting seat (1), a front supporting arm (3) and a rear supporting arm (4) are respectively provided at two ends of the frame (2), a front supporting block (5) is provided at the end of the front supporting arm (3), a rear supporting block (6) is provided at the end of the rear supporting arm (4), and a limiting structure is provided on the rear supporting block (6).

2. The vehicle body support device of the final assembly chassis line lifter according to claim 1, characterized in that: A first cylinder (11) is fixedly connected to the bottom of the mounting seat (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 seat (1), connecting blocks (21) are provided at the tops of both ends of the frame (2), a sliding block (22) is provided inside the connecting block (21), and the sliding block (22) cooperates with the guide rail (13).

3. The vehicle body support device of the final assembly chassis line lifter according to claim 2, characterized in that: The limiting structure comprises a limiting step (62), and limiting protrusions (61) are provided on both sides of the rear supporting block (6), and the ends of the limiting step (62) are connected to the limiting protrusions (61) to form a stop groove (63).

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

5. The vehicle body supporting device of the final assembly chassis line lifter according to claim 4, characterized in that: A positioning surface (64) is provided on the inner side of the limiting step (62), and the positioning surface (64) is a stepped structure.

6. The vehicle body support device of the final assembly chassis line lifter according to claim 5, characterized in that: Position limiting blocks (51) are provided on both sides of the top of the front supporting block (5).

7. The vehicle body supporting device of the final assembly chassis line lifter according to any one of claims 1 to 6, characterized in that: The front supporting block (5) and the end of the front supporting arm (3) are connected with a bracket (33), and a waist-shaped hole (34) is provided at the bottom of the bracket (33); the side of the front supporting arm (3) is fixedly connected with a supporting leg (32), and the supporting leg (32) and the front supporting arm (3) are arranged vertically.

8. The vehicle body supporting device of the final assembly chassis line lifter according to claim 7, characterized in that: The front supporting block (5) and the rear supporting block (6) are both provided with mounting holes (52).

9. The vehicle body supporting device of the final assembly chassis line lifter according to claim 1, characterized in that: A support frame (12) is provided on the top of the mounting seat (1).

10. The vehicle body supporting device of the final assembly chassis line lifter according to claim 7, characterized in that: The front supporting arm (3), the rear supporting arm (4) and the supporting leg (32) are all square tube structures, and the frame (2) and the mounting seat (1) are formed by welding square tubes.

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