Compatible holding tool for automobile general assembly chassis

Abstract

The invention discloses an automobile general assembly chassis compatible holding tool which comprises a horizontal hanging bracket, a support is movably connected to the horizontal hanging bracket, a front hanging arm and a rear hanging arm are arranged at the two ends of the support respectively, a positioning pin is arranged at the bottom end of the front hanging arm, a supporting block is arranged at the bottom end of the rear hanging arm, and a position locking structure is arranged at the top end of the rear hanging arm. The method is suitable for collinear production of front-bearing and non-bearing vehicle types, reduces the planning of lifting appliance loop lines, and reduces the cost.

Description

Technical Field

[0001] The invention belongs to the field of vehicle body clamps, and in particular relates to a vehicle assembly chassis compatible clamp. Background Art

[0002] Load-bearing body: also known as frameless or monocoque body, characterized by the integration of the body and chassis into an integral structure without an independent frame. This type of vehicle requires a chassis hoist to lift the body skirt for transportation during chassis assembly. Non-load-bearing body: also known as frame body, characterized by an independent frame (chassis) on which the body structure is installed. During chassis assembly, this type of vehicle requires a chassis hoist to lift the body skirt for transfer before the frame is assembled. After the frame assembly is assembled, the chassis hoist is required to lift the frame assembly for transportation due to the increase in the curb weight of the body.

[0003] Due to the large differences in vehicle structures between load-bearing and non-load-bearing models, the traditional production model requires the use of two chassis lines or the use of two chassis clamps to switch between transfer and chassis assembly methods due to the large differences in the positions of the vehicle lifting support points and the vehicle structure. The use of two sets of chassis clamps has high requirements on the workshop area and production line layout, and the investment cost of the production line equipment is high.

[0004] The utility model patent with publication number CN 207087200U was published on March 13, 2018, and the name of the body-in-white holding device is disclosed. The body-in-white holding device includes a main frame, a fixed clamp connected to the main frame, and a movable clamp connected to the fixed clamp and retractable relative to the fixed clamp. The body-in-white holding device also cannot solve the technical problems described above. Summary of the invention

[0005] The purpose of the present invention is to provide a chassis compatible clamp for automobile assembly, which is suitable for co-production of front load-bearing and non-load-bearing models, reduces the planning of hoist loops, and reduces costs, in view of the deficiencies in the prior art.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] The automobile assembly chassis is compatible with a holding device, including a horizontal hanger, on which a bracket is movably connected, a front hanging arm and a rear hanging arm are respectively provided at both ends of the bracket, a positioning pin is provided at the bottom end of the front hanging arm, a supporting block is provided at the bottom end of the rear hanging arm, and a position locking structure is provided at the top end of the rear hanging arm.

[0008] The position locking structure includes a card block, a locking plate is provided on the side of the bracket, a card slot is provided on the end of the locking plate, and the card block cooperates with the card slot; a connecting bracket is provided at the top of the rear suspension arm, a mounting shaft is provided on the connecting bracket, the card block is fixedly connected to the mounting shaft, a torsion spring is provided between one side of the connecting bracket and the card block, a blocking rod is fixedly connected to the card block, the blocking rod is arranged parallel to the mounting shaft, and one end of the torsion spring abuts against the blocking rod.

[0009] Support rods are arranged on both sides of the rear suspension arm, the top ends of the support rods are fixedly connected to the bottom of the bracket, the bottom ends of the support rods are connected to sliding rods, and the middle part of the rear suspension arm is sleeved on the sliding rods.

[0010] A first support is provided at the bottom end of the front suspension arm, a first guide rail is provided on the second support, a first mounting plate is provided on the first guide rail, and the locating pin is provided at the end of the first mounting plate; a second support is provided at the bottom end of the rear suspension arm, a second guide rail is provided on the second support, a second mounting plate is provided on the guide rail, and the support block is provided at the end of the second mounting plate.

[0011] A limiting block is provided on the top of the support block, a positioning groove is provided between the limiting blocks, a limiting groove is provided at one end of the positioning groove, and the limiting groove is a trapezoidal structure.

[0012] A connecting rod is provided on the top of the horizontal hanger, a moving wheel is provided on the top of the connecting rod, a bearing seat is also provided on the horizontal hanger, and a rotating shaft is connected to the end of the bracket and the bearing seat.

[0013] The first support and the second support are both provided with adjustment plates on their sides, the adjustment plates are provided with adjustment pins, and the adjustment plates are provided with a plurality of connection holes.

[0014] A plurality of positioning holes are provided on the first guide rail and the second guide rail.

[0015] The positioning pin comprises a pin seat and a pin head, and the top end of the pin head is an arc-shaped structure.

[0016] A shift rod is arranged on the top of the block.

[0017] The technical effect of the present invention is as follows: by adopting the automobile assembly chassis compatible clamp of the present invention, the rear boom is moved by the guidance of the sliding rod to realize the X-direction spacing adjustment of the support block and the locating pin. After the position of the rear boom is adjusted, it is mechanically locked by the clamping block and the clamping slot. The position switching of the rear boom is convenient and has high stability, thereby improving stability. The support block and the locating pin are movable on the guide rail and adjustable in the Y-direction position, so that it is suitable for the co-production of load-bearing vehicles and non-load-bearing vehicles, and meets the sharing of chassis clamps before and after frame assembly. It is suitable for a production mode that is compatible with multi-platform vehicles, multi-wheelbase vehicles and multi-support positions. There is no need to use two sets of chassis clamps to correspond to the two models, which saves the development and manufacturing costs of the clamps, reduces the planning of the clamp loop, and is conducive to improving the frame assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] This specification includes the following drawings, which show the following contents:

[0019] Figure 1 It is a structural schematic diagram of the automobile assembly chassis compatible holding device of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the horizontal hanger of the present invention;

[0021] Figure 3 is a schematic structural diagram of the stent of the present invention;

[0022] Figure 4 is a structural schematic diagram of the position locking structure of the present invention;

[0023] Figure 5 is a schematic top view of the position locking structure of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the bottom end of the front suspension arm of the present invention;

[0025] Figure 7 It is a structural schematic diagram of the bottom end of the rear suspension arm of the present invention.

[0026] The markings in the figure are: 1. horizontal hanger; 11. bracket; 12. locking plate; 13. slot; 14. connecting rod; 15. moving wheel; 16. bearing seat; 17. rotating shaft; 2. front boom; 3. rear boom; 31. support rod; 32. slide rod; 33. connecting bracket; 34. mounting shaft; 35. block; 36. torsion spring; 37. stop rod; 38. lever; 4. positioning pin; 41. first support; 42. first guide rail; 43. first mounting plate; 44. pin seat; 45. pin head; 5. support block; 51. second support; 52. second guide rail; 53. second mounting plate; 54. limit block; 55. positioning slot; 56. limit slot; 6. adjustment plate; 61. adjustment pin; 62. connecting hole; 63. positioning hole. DETAILED DESCRIPTION

[0027] 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.

[0028] like Figure 1 As shown, the automobile assembly chassis is compatible with the holding device, including a horizontal hanger 1, on which a bracket 11 is movably connected, a front hanging arm 2 and a rear hanging arm 3 are respectively provided at both ends of the bracket 11, a positioning pin 4 is provided at the bottom end of the front hanging arm 2, a supporting block 5 is provided at the bottom end of the rear hanging arm 3, and a position locking structure is provided at the top end of the rear hanging arm 3.

[0029] The movement of the bracket 11 is powered by the rotating cylinder outside the holding device. The movement of the bracket 11 realizes the opening and closing of a pair of brackets 11, so that the support block 5 and the positioning pin 4 move to the bottom of the vehicle body, so as to perform the lifting operation normally. The movement of the rear suspension arm 3 on the slide bar 32 realizes that it can be adjusted in the X direction of the vehicle body coordinate system and the spacing between the positioning pin 4 and the support block 5 in the X direction can be changed, so that it is suitable for vehicles with different wheelbases. The movement of the positioning pin 4 and the support block 5 on the guide rail realizes that both can be adjusted in the Y direction of the vehicle body coordinate system, so that it is suitable for vehicles with different widths. The movement of the rear suspension arm 3, the positioning pin 4 and the support block 5 can meet the lifting and hoisting of different support points on different vehicle bodies, thus realizing the effect of co-linear production of load-bearing vehicles and non-load-bearing vehicles. The horizontal hanger 1, bracket 11, front suspension arm 2 and rear suspension arm 3 are all made of square tube welding, which has low weight and low manufacturing cost.

[0030] like Figures 3 to 5 As shown, the position locking structure includes a block 35, a locking plate 12 is provided on the side of the bracket 11, a slot 13 is provided at the end of the locking plate 12, and the block 35 cooperates with the slot 13; a connecting bracket 33 is provided at the top of the rear suspension arm 3, a mounting shaft 34 is provided on the connecting bracket 33, the block 35 is fixedly connected to the mounting shaft 34, a torsion spring 36 is provided between one side of the connecting bracket 33 and the block 35, a blocking rod 37 is fixedly connected to the block 35, the blocking rod 37 is arranged parallel to the mounting shaft 34, and one end of the torsion spring 36 abuts against the blocking rod 37. In the above structure, the position of the rear suspension arm 3 is locked by the cooperation of the card slot 13 and the card block 35. One end of the torsion spring 36 resists the stopper rod 37 to exert force on it, and the other end extends into the connecting bracket 33. Therefore, the torsion spring 36 has an automatic reset effect on the card block 35, so that the card block 35 is always engaged with the card slot 13 without external force. Under the elastic reset effect of the torsion spring 36, the block is tightly engaged in the card slot 13 and will not easily fall out, thereby realizing the mechanical locking of the position of the rear suspension arm 3, ensuring the stability of the rear suspension arm 3, and ensuring the stability during the subsequent transportation of the vehicle body. Among them, there are multiple card slots 13, and the card block 35 can switch positions between each card slot 13, which is convenient for switching the position of the card block 35 according to the vehicle model, so as to achieve the purpose of adjusting the distance between the support block 5 and the positioning pin 4, and adapt to the different support points of the vehicle body of different vehicle models. The card slot 13 and the card block 35 are both square structures. When the two are fixed together, they have multiple surface contacts, and the fixing stability is reliable. In order to prevent the two from causing wear when they are aligned and connected, rounded corners are set on the end edges of the card slot 13.

[0031] like Figures 1 to 3As shown, support rods 31 are provided on both sides of the rear boom 3, the top of the support rod 31 is fixedly connected to the bottom of the bracket 11, and the bottom of the support rod 31 is connected to a slide rod 32, and the middle part of the rear boom 3 is sleeved on the slide rod 32. The slide rod 32 provides a support point for the middle part of the rear boom 3, stabilizes the posture of the rear boom 3, and has a linear guide effect on the position adjustment of the rear boom 3. The front boom 2 and the two support rods 31 stabilize the position of the slide rod 32, and the rear boom 3 can move axially on the slide rod 32 to reduce the movement resistance. The distance adjustment process between the rear boom 3 and the front boom 2 is smooth, and one end of the slide rod 32 passes through the support rod 31 and is fixedly connected to the front boom 2. It is arranged parallel to the horizontal hanger 1, wherein the linear movement of the rear boom 3 is powered by the cylinder outside the holding device.

[0032] like Figure 6 and Figure 7 As shown, the front boom 2 is provided with a first support 41 at the bottom, a first guide rail 42 is provided on the second support 51, a first mounting plate 43 is provided on the first guide rail 42, and a positioning pin 4 is provided at the end of the first mounting plate 43; the rear boom 3 is provided with a second support 51 at the bottom, a second guide rail 52 is provided on the second support 51, a second mounting plate 53 is provided on the guide rail, and a support block 5 is provided at the end of the second mounting plate 53. The first mounting plate 43 cooperates with the first guide rail 42, and the second mounting plate 53 cooperates with the second guide rail 52. The positioning pin 4 moves linearly on the first guide rail 42 with the first mounting plate 43, and the support block 5 is the same. The moving power of the first mounting plate 43 and the second mounting plate 53 is also provided by the external cylinder of the holding device. When the positioning pin 4 and the support block 5 are used, the first guide rail 42 and the second guide rail 52 are both set horizontally to ensure a stable supporting effect.

[0033] like Figure 7 As shown, a limit block 54 is provided on the top of the support block 5, a positioning groove 55 is provided between the limit blocks 54, and a limit groove 56 is provided at one end of the positioning groove 55, and the limit groove 56 is a trapezoidal structure. For a non-load-bearing vehicle, the frame beam is supported by the positioning groove 55, and the frame beam is located between the limit blocks 54, so that the stability is guaranteed. For a load-bearing vehicle, the body skirt is supported by the positioning groove 55, and the limit groove 56 can also limit the raised part of the body skirt.

[0034] like Figure 2 As shown, a connecting rod 14 is provided at the top of the horizontal hanger 1, and a moving wheel 15 is provided at the top of the connecting rod 14. A bearing seat 16 is also provided on the horizontal hanger 1, and a rotating shaft 17 is connected to the end of the bracket 11 and the bearing seat 16. The moving wheels 15 are used to move the holding device on the lifting track line. There are four moving wheels 15 to ensure the stability of the holding device. The bracket 11 rotates around the bearing seat 16 through the rotating shaft 17, reducing the rotation resistance of the rotating shaft 17, and realizing the expansion or retraction clamping action of the bracket 11.

[0035] like Figure 6As shown, the positioning pin 4 includes a pin seat 44 and a pin head 45, and the top of the pin head 45 is an arc-shaped structure. The pin head 45 is designed to be arc-shaped to have a guiding function and will not cause damage to the vehicle body structure.

[0036] like Figure 6 and Figure 7 As shown, the first support 41 and the second support 51 are both provided with an adjustment plate 6 on the side, and an adjustment pin 61 is provided on the adjustment plate 6, and a plurality of connection holes 62 are provided on the adjustment plate 6. The bottom end of the adjustment pin 61 is connected to the adjustment hole, and a plurality of adjustment holes are designed to change the position of the adjustment pin 61, which can be adjusted according to the body structure of different models to ensure that the body is accurately and stably positioned and supported. The cross section of the adjustment plate 6 is an L-shaped structure, which is used to ensure that the upper end surface of the adjustment plate 6 is horizontal.

[0037] like Figure 6 and Figure 7 As shown, a plurality of positioning holes 63 are provided on the first guide rail 42 and the second guide rail 52. The positioning holes 63 are designed on the guide rails to fully utilize the installation position of the guide rails. The end of the mounting plate and the guide rails are staggered in the vertical direction to ensure that the positioning holes 63 are not blocked. Each positioning hole 63 corresponds to a support gear position, and the positioning is switched according to the body of different models to ensure the position adjustment accuracy of the holding device.

[0038] like Figure 4 and Figure 5 As shown, a lever 38 is provided on the top of the block 35. The lever 38 is located at the top of the block 35, where there is no other component blocking the position. The lever 38 is formed by bending a round tube, which increases the force arm of the block 35 rotating on the mounting shaft 34, and facilitates manual or mechanical operation to unlock the position of the block 35 by toggling the lever 38, thereby switching the position of the block 35 according to the vehicle model, and achieving the purpose of adjusting the distance between the positioning pin 4 and the bracket 5.

[0039] The working mode of the chassis compatible clamp for automobile assembly is as follows: the body moves to the bottom of the clamp along the assembly conveyor line. After the chassis clamp is clamped and positioned, the clamp is automatically adjusted according to the vehicle configuration requirements, and the clamp is automatically switched to lift the positioning pin 4, the support block position and the rear suspension arm 3 position. The bracket 11 rotates to move the support block 5 and the positioning pin 4 to the bottom of the body. According to the position of the body support point, the position of the support block 5 and the positioning pin 4 on the guide rail is adjusted in the Y direction. The lever 38 is turned to rotate the block 35 to a certain angle. According to the body type, the block 35 is moved to the corresponding slot 13. Under the reset action of the torsion spring 36, the block 35 is clamped into the slot 13 to form a mechanical lock, that is, the distance between the rear suspension arm 3 and the front suspension arm 2 is adjusted in the X direction, so that the support block 5 and the positioning pin 4 are accurately aligned with the body support point. After the above structure is adjusted in place, the chassis clamp positioning clamping mechanism automatically opens to move the positioning pin 4 and the support block to the bottom of the body. Then, the frame beam or the body skirt can be lifted by the supporting block 5 and the positioning pin 4, and the body can be unlocked in the Z direction so that the corresponding position of the body falls on the adjusting pin 61, so as to ensure the stability of the lifting of the body.

[0040] The automobile assembly chassis is compatible with clamps, and the rear suspension arm 3 is moved by the guidance of the slide bar 32 to achieve the X-direction spacing adjustment of the support block 5 and the locating pin 4. After the position of the rear suspension arm 3 is adjusted, the block 35 and the slot 13 are mechanically locked, and the position switching of the rear suspension arm 3 is convenient and has high stability, thereby improving stability; the support block 5 and the locating pin 4 are movable on the guide rail and adjustable in the Y-direction position, so that it is suitable for the co-production of load-bearing vehicles and non-load-bearing vehicles, and meets the sharing of chassis clamps before and after frame assembly. It is suitable for a production mode that is compatible with multi-platform vehicles, multi-wheelbase vehicles and multi-support positions, and there is no need to use two sets of chassis clamps to correspond to the two models, which saves the development and manufacturing costs of the clamps, reduces the planning of the suspension loop, and is conducive to improving the frame assembly efficiency.

[0041] 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 chassis compatible grip for automobile assembly, characterized by: The invention comprises a horizontal hanger (1), wherein a bracket (11) is movably connected to the horizontal hanger (1), a front hanger arm (2) and a rear hanger arm (3) are respectively arranged at two ends of the bracket (11), a positioning pin (4) is arranged at the bottom end of the front hanger arm (2), a supporting block (5) is arranged at the bottom end of the rear hanger arm (3), and a position locking structure is arranged at the top end of the rear hanger arm (3).

2. The automobile assembly chassis compatible holder according to claim 1, characterized in that: The position locking structure comprises a clamping block (35), a locking plate (12) is provided on the side of the bracket (11), a clamping groove (13) is provided at the end of the locking plate (12), and the clamping block (35) cooperates with the clamping groove (13); a connecting bracket (33) is provided at the top end of the rear suspension arm (3), a mounting shaft (34) is provided on the connecting bracket (33), the clamping block (35) is fixedly connected to the mounting shaft (34), a torsion spring (36) is provided between one side of the connecting bracket (33) and the clamping block (35), a blocking rod (37) is fixedly connected to the blocking rod (37), the blocking rod (37) is arranged parallel to the mounting shaft (34), and one end of the torsion spring (36) abuts against the blocking rod (37).

3. The automobile assembly chassis compatible holder according to claim 2, characterized in that: Support rods (31) are provided on both sides of the rear suspension arm (3), the top ends of the support rods (31) are fixedly connected to the bottom of the bracket (11), the bottom ends of the support rods (31) are connected to sliding rods (32), and the middle part of the rear suspension arm (3) is sleeved on the sliding rods (32).

4. The automobile assembly chassis compatible holder according to claim 3, characterized in that: A first support (41) is provided at the bottom end of the front suspension arm (2), a first guide rail (42) is provided on the second support (51), a first mounting plate (43) is provided on the first guide rail (42), and the positioning pin (4) is provided at the end of the first mounting plate (43); a second support (51) is provided at the bottom end of the rear suspension arm (3), a second guide rail (52) is provided on the second support (51), a second mounting plate (53) is provided on the guide rail, and the support block (5) is provided at the end of the second mounting plate (53).

5. The automobile assembly chassis compatible holder according to any one of claims 1 to 4, characterized in that: A limiting block (54) is provided on the top of the support block (5), a positioning groove (55) is provided between the limiting blocks (54), a limiting groove (56) is provided at one end of the positioning groove (55), and the limiting groove (56) is a trapezoidal structure.

6. The automobile assembly chassis compatible holder according to claim 5, characterized in that: The top of the horizontal hanger (1) is provided with a connecting rod (14), the top of the connecting rod (14) is provided with a moving wheel (15), the horizontal hanger (1) is also provided with a bearing seat (16), and the end of the bracket (11) is connected to the bearing seat (16) with a rotating shaft (17).

7. The automobile assembly chassis compatible holder according to claim 6, characterized in that: The first support (41) and the second support (51) are both provided with adjustment plates (6) on their sides, the adjustment plates (6) are provided with adjustment pins (61), and the adjustment plates (6) are provided with a plurality of connection holes (62).

8. The automobile assembly chassis compatible holder according to claim 7, characterized in that: A plurality of positioning holes (63) are provided on the first guide rail (42) and the second guide rail (52).

9. The automobile assembly chassis compatible holder according to claim 1, characterized in that: The positioning pin (4) comprises a pin seat (44) and a pin head (45), and the top end of the pin head (45) is an arc-shaped structure.

10. The automobile assembly chassis compatible holder according to claim 2, characterized in that: A lever (38) is provided on the top of the clamping block (35).

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