Automobile rear suspension split-assembling and combined-assembling on-line device and using method thereof

Abstract

The invention discloses an automobile rear suspension split charging and combined charging on-line device and a using method thereof. The device comprises a split charging table frame; the automobile rear suspension split-assembling and combined-assembling table is installed on the split-assembling table frame, and an automobile rear suspension can be installed on the automobile rear suspension split-assembling and combined-assembling table; an automobile rear spiral spring press-fitting unit is used in cooperation with an automobile rear suspension split-assembling and combined-assembling table, the automobile rear spiral spring press-fitting unit can be used for installing an automobile rear spiral spring, an automobile body installing hole can be rapidly and accurately positioned, and press-fitting of the rear spiral spring, rapid and accurate positioning and assembling of a rear auxiliary frame and a rear trailing arm installing support can be achieved rapidly and safely. And the device has the advantages of simple structure and convenience in operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of vehicle installation, and particularly relates to an assembly and sub-assembly device for the rear suspension of a vehicle and a method for using the same. Background Art

[0002] In the process of implementing the present invention, the inventors found that the prior art has at least the following problems:

[0003] During the prototype trial production process, the rear suspension assembly needs to be sub-assembled and assembled onto the production line. When manually installing the rear suspension assembly on the lift, it is difficult to position the rear subframe and the body mounting holes, and it is also difficult to position the left and right rear trailing arm mounting brackets and the body mounting holes. Due to the tension of the rear coil spring, the length of the rear coil spring exceeds the gap between the rear subframe, the rear trailing arm mounting bracket and the body, resulting in the inability to install the rear subframe and the rear trailing arm mounting bracket. The space layout of the installation part of the rear coil spring of the vehicle rear suspension assembly is compact, and conventional tools are not convenient for locking and installing outside the rear coil spring. During the installation process of the rear coil spring, it bears a pressing force and is extremely prone to rebound and injury accidents, presenting potential safety hazards.

[0004] CN111730554A - An assembly table for a vehicle rear suspension device discloses an assembly table for a vehicle rear suspension device, including a workbench, a tool drawer is provided at the bottom of the workbench, bolt holes are opened inside the workbench, grooves are fixedly provided around the workbench, a baffle is fixedly provided on the workbench, a fixed block is provided on the workbench through a support rod, the support rod includes an upper support rod and a lower support rod, the upper support rod and the lower support rod are connected by a threaded rod and a threaded sleeve, and clamping plates are connected to the inner walls on both sides of the fixed block; it also cannot solve the above technical problems. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an assembly and sub-assembly device for the rear suspension of a vehicle and a method for using the same, which can achieve the universality of the rear suspension assembly on the same platform, quickly and accurately position through two positioning pins on the device and the body positioning holes, press-fit the rear coil spring through the rear coil spring pressing unit, and adjust the gap between the rear subframe, the rear trailing arm mounting bracket and the body, so as to quickly and accurately install the rear subframe and the rear trailing arm mounting bracket, solve the problems of difficult positioning of the rear subframe and the body mounting holes, difficult positioning of the rear trailing arm mounting bracket and the body mounting holes, and difficult press-fitting of the rear coil spring, and greatly improve the assembly efficiency of the rear suspension assembly.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is: an assembly and sub-assembly device for the rear suspension of a vehicle, having:

[0007] A sub-assembly table frame;

[0008] The rear suspension subassembly and final assembly table of the vehicle, which is installed on the frame of the subassembly table, can install the rear suspension of the vehicle.

[0009] The rear coil spring pressing unit of the vehicle, which is used in cooperation with the rear suspension subassembly and final assembly table of the vehicle, can install the rear coil spring of the vehicle.

[0010] The rear suspension subassembly and final assembly table of the vehicle has:

[0011] The subassembly table base, which is installed on the frame of the subassembly table;

[0012] The rear subframe support pin, which can support the rear subframe;

[0013] The rear lower control arm support pin, which can support the rear lower control arm;

[0014] The rear subframe positioning pin, which can position the rear subframe;

[0015] The rear shock absorber positioning unit, which can position the rear shock absorber;

[0016] The rear brake support pin, which can support the rear brake;

[0017] The rear trailing arm assembly support pin, which can support the rear trailing arm assembly;

[0018] The rear trailing arm mounting bracket positioning pin, which can position the rear trailing arm mounting bracket;

[0019] The mating body positioning pin assembly, which can position the body;

[0020] The rear axle support pin, which can support the rear axle.

[0021] The rear lower control arm support pin includes a first rear lower control arm support pin and a second rear lower control arm support pin; the rear axle support pin includes a first rear axle support pin and a second rear axle support pin.

[0022] The rear subframe support pin includes a universal positioning support pin base, on which a universal positioning support pin shaft is provided, and a rear subframe support bracket is provided on the universal positioning support pin shaft, and the rear subframe support bracket can support the rear subframe.

[0023] The first rear lower control arm support pin and the second rear lower control arm support pin include a universal positioning support pin base, on which a universal positioning support pin shaft is provided, and a first rear lower control arm support bracket and a second rear lower control arm support bracket are respectively provided on the universal positioning support pin shafts of the first rear lower control arm support pin and the second rear lower control arm support pin.

[0024] The rear subframe positioning pin includes a general positioning support pin seat, on which a general positioning support pin shaft is provided, and a rear subframe positioning pin shaft is provided on the general positioning support pin shaft.

[0025] The rear shock absorber positioning unit has a rear shock absorber positioning support pin seat, on which a rear shock absorber positioning support shaft is provided, and a rear shock absorber positioning support arm is provided on the rear shock absorber positioning support shaft.

[0026] The rear brake support pin includes a general positioning support pin seat, on which a general positioning support pin shaft is provided, and a rear brake support frame is provided on the general positioning support pin shaft; the rear trailing arm assembly support unit includes two sets of general positioning support pin seats and general positioning support pin shafts, and a rear trailing arm support frame and a rear trailing arm mounting bracket positioning pin are respectively provided on the two general positioning support pin shafts.

[0027] The vehicle rear coil spring pressing unit has an extended sleeve, in which an adjusting nut is provided, and a variable axis connecting threaded rod is also provided and threadedly connected to the adjusting nut; a spring upper connecting plate is provided at the upper end of the variable axis connecting threaded rod, and a spring lower connecting plate is also provided and connected to the adjusting nut through a flat thrust roller bearing, and the vehicle rear coil spring can be installed between the spring upper connecting plate and the spring lower connecting plate.

[0028] The using method of the above vehicle rear suspension subassembly and final assembly online device is as follows. When subassembling the suspension, first place the rear subframe on the rear subframe positioning pin and support pin, and then place the rear lower control arm, rear brake, and rear trailing arm assembly on the first rear lower control arm support pin, second rear lower control arm support pin, rear brake support pin, rear trailing arm mounting bracket positioning pin, and rear trailing arm support pin respectively for subassembly; place the rear shock absorber on the rear shock absorber positioning unit for subassembly, and remove the rear shock absorber positioning support shaft after the subassembly of the rear shock absorber is completed; when the rear suspension is finally assembled and put on the line, the body positioning pin first contacts the body to fix the relative position of the subassembly table and the body on the horizontal plane, place the rear coil spring on the rear lower control arm, and use the vehicle rear coil spring pressing unit to press the rear coil spring; use bolts to install the rear subframe, rear trailing arm mounting bracket, and rear shock absorber on the body; loosen the adjusting nut of the vehicle rear coil spring pressing unit and remove the vehicle rear coil spring pressing unit.

[0029] One of the above technical solutions has the following advantages or beneficial effects. It can achieve the universality of the rear suspension assembly on the same platform. Through the two positioning pins on the device and the positioning holes on the vehicle body, rapid and accurate positioning can be achieved. The rear coil spring is pressed by the rear coil spring pressing unit, and the gaps between the rear subframe, the mounting bracket of the rear trailing arm and the vehicle body are adjusted. Thus, the rear subframe and the mounting bracket of the rear trailing arm can be installed quickly and accurately, solving the problems of difficult positioning of the mounting holes between the rear subframe and the vehicle body, difficult positioning of the mounting holes between the mounting bracket of the rear trailing arm and the vehicle body, and difficult pressing of the rear coil spring, greatly improving the assembly efficiency of the rear suspension assembly. Description of the Drawings

[0030] Figure 1 Schematic structural diagram of the device for assembling and installing the rear suspension of an automobile provided in the embodiment of the present invention;

[0031] Figure 2 Schematic structural diagram of the sub-assembly and final assembly table of the rear suspension of an automobile;

[0032] Figure 3 Schematic structural diagram of the support pin of the rear subframe;

[0033] Figure 4 Schematic structural diagram of the first rear lower control arm support pin;

[0034] Figure 5 Schematic structural diagram of the positioning pin of the rear subframe;

[0035] Figure 6 Schematic structural diagram of the rear shock absorber positioning unit;

[0036] Figure 7 Schematic structural diagram of the second rear lower control arm support pin;

[0037] Figure 8 Schematic structural diagram of the support pin of the rear brake;

[0038] Figure 9 Schematic structural diagram of the support unit of the rear trailing arm assembly;

[0039] Figure 10 Schematic structural diagram of the body positioning pin;

[0040] Figure 11 Schematic structural diagram of the rear axle support pin unit;

[0041] Figure 12 Schematic structural diagram of the rear coil spring pressing unit of an automobile;

[0042] The markings in the above figures are all:

[0043] 1. Sub-assembly table frame, 2. Sub-assembly and final assembly table of the rear suspension of an automobile, 3. Rear coil spring pressing unit of an automobile,

[0044] 4. Sub - assembly pedestal, 5. Rear sub - frame support pin, 6. First rear lower control arm support pin, 7. Rear sub - frame positioning pin, 8. Rear shock absorber positioning unit, 9. Second rear lower control arm support pin, 10. Rear brake support pin, 11. Rear trailing arm assembly support pin, 12. Rear trailing arm mounting bracket positioning pin, 13. Matching body positioning pin assembly, 14. First rear axle support pin, 15. Second rear axle support pin, 16. Auxiliary support pin

[0045] 17. Rear sub - frame support bracket, 18. Universal positioning support pin shaft, 19. Universal positioning support pin seat, 20. First rear lower control arm support bracket, 21. Rear sub - frame positioning pin shaft

[0046] 22. Rear shock absorber positioning support arm, 23. Rear shock absorber positioning support shaft, 24. Rear shock absorber positioning support pin seat

[0047] 25. Second rear lower control arm support bracket, 26. Rear brake support bracket, 27. Rear trailing arm support bracket, 28. Rear trailing arm mounting bracket positioning pin

[0048] 29. Body mating pin, 30. Guide seat, 31. Locking pin, 32. Return spring, 33. Sleeve, 34. Spring adjusting seat

[0049] 35. Second rear axle support bracket, 36. First rear axle support bracket

[0050] 37. Spring upper connecting plate, 38. Variable axis connecting threaded rod, 39. Angular contact ball bearing, 40. Spring lower connecting plate, 41. Thrust washer, 42. Adjusting nut, 43. Extended sleeve Detailed implementation mode

[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0052] Embodiment 1

[0053] An automobile rear suspension sub - assembly and final assembly on - line device, generally of a frame structure, places the automobile rear suspension sub - assembly and final assembly table on the frame and is used in cooperation with the automobile rear coil spring pressing unit. Its manufacturing process is as follows: 1. Drill threaded holes on the steel plate plane; 2. Install positioning pins, support pins, etc. in corresponding positions through bolts; 3. Cooperate with the automobile rear coil spring pressing unit; to achieve the functions of sub - assembly, final assembly on - line of the automobile rear suspension and mating with the body.

[0054] Figure 2 It is an assembly and sub - assembly table for the rear suspension of an automobile. On the sub - assembly table base 4, a rear sub - frame support pin 5 is installed to lift the rear sub - frame, and together with two rear sub - frame positioning pins 7, they jointly constrain the rear sub - frame in an appropriate position; two first rear lower control arm support pins 6 and two second rear lower control arm support pins 9 are installed to jointly lift the left and right rear lower control arms; two rear brake support pins 10 are installed to lift the left and right rear brakes; two rear shock absorber positioning units 8 are installed to constrain the rear shock absorbers in an appropriate position; two rear trailing arm support pins 11 and two rear trailing arm mounting bracket positioning pins 12 are installed to jointly lift the rear trailing arm and constrain the installation angle and position of the rear trailing arm mounting bracket; two mating body positioning pin assemblies 13 are installed to position the relative position of the sub - assembly table and the body on the horizontal plane; a first rear axle support pin 14 and a second rear axle support pin 15 are installed to jointly lift the rear axle assembly.

[0055] Figure 3 It is a rear sub - frame support pin, which consists of a rear sub - frame support bracket 17, a general positioning support pin shaft 18, and a general positioning support pin seat 19. The rear sub - frame support bracket 17 is placed in an appropriate position on the sub - assembly table base and, together with two rear sub - frame positioning pin shafts 21, jointly positions and supports the rear sub - frame assembly in an appropriate position.

[0056] Figure 4 It is a first rear lower control arm support pin, which consists of a first rear lower control arm support bracket 20, a general positioning support pin shaft 18, and a general positioning support pin seat 19. Two first rear lower control arm support brackets 20 are placed in an appropriate position on the sub - assembly table base and, together with two second rear lower control arm support brackets 25, jointly support the left and right rear lower control arms in an appropriate position.

[0057] Figure 5 It is a rear sub - frame positioning pin, which consists of a rear sub - frame positioning pin shaft 21, a general positioning support pin shaft 18, and a general positioning support pin seat 19. The general positioning support pin seat 19 is installed at the corresponding position on the sub - assembly table base. The general positioning support pin shaft 18 is placed inside the general positioning support pin seat 19, and the rear sub - frame positioning pin shaft 21 is placed inside the general positioning support pin shaft 18. The general positioning support pin shaft 18 and the general positioning support pin seat 19 adopt a conical surface and a shaft - hole fit. The positioning accuracy can generally reach within ±0.2 mm, restricting the axial movement and horizontal wobbling of the general positioning support pin shaft 18. One of the two rear sub - frame positioning pin shafts 21 is a cylindrical pin with a chamfer, and the other is a rhombic cylindrical pin with a chamfer.

[0058] Figure 6It is a rear shock absorber positioning unit, which consists of a rear shock absorber positioning support arm 22, a rear shock absorber positioning support shaft 23, and a rear shock absorber positioning support pin seat 24. Two rear shock absorber positioning support pin seats 24 are installed at corresponding positions on the sub-assembly pedestal. There are two grooves on the support pin seat 24. The rear shock absorber positioning support shaft 23 is placed on the support pin seat 24. There is a retaining pin on the support shaft 23, which is used in cooperation with the groove on the support pin seat 24. The rear shock absorber positioning support arm 22 is placed on the support shaft 23 and is used to restrain and position the rear shock absorber at an appropriate position.

[0059] Figure 7 It is the second rear lower control arm support pin, which consists of a second rear lower control arm support frame 25, a universal positioning support pin shaft 18, and a universal positioning support pin seat 19. Two universal positioning support pin seats 19 are installed at corresponding positions on the sub-assembly pedestal. Two universal positioning support pin shafts 18 are placed inside the universal positioning support pin seats 19. Two second rear lower control arm support frames 25 are placed inside the universal positioning support pin shafts 18, and together with two first rear lower control arm support frames 20, they support the left and right rear lower control arms at appropriate positions.

[0060] Figure 8 It is the rear brake support pin, which consists of a rear brake support frame 26, a universal positioning support pin shaft 18, and a universal positioning support pin seat 19. Two universal positioning support pin seats 19 are installed at corresponding positions on the sub-assembly pedestal. Two universal positioning support pin shafts 18 are placed inside the universal positioning support pin seats 19. Two rear brake support frames 26 are placed inside the universal positioning support pin shafts 18 and are used to support the left and right rear brakes at appropriate positions.

[0061] Figure 9 It is the rear trailing arm assembly support unit, which consists of a rear trailing arm support frame 27, a rear trailing arm mounting bracket positioning pin 28, a universal positioning support pin shaft 18, and a universal positioning support pin seat 19. Four universal positioning support pin seats 19 are installed at corresponding positions on the sub-assembly pedestal. Four universal positioning support pin shafts 18 are placed inside the universal positioning support pin seats 19. Two rear trailing arm assembly support frames 27 and the rear trailing arm mounting bracket positioning pin 28 are respectively placed inside the universal positioning support pin shafts 18, and they work together to lift the rear trailing arm and restrain the installation angle and position of the rear trailing arm mounting bracket.

[0062] Figure 10It is a schematic diagram of the body positioning pin, which is composed of the body mating pin 29, the guide seat 30, the locking pin 31, the return spring 32, the sleeve 33, and the spring adjusting seat 34. The long hole on the guide seat 30 can adjust the position of the guide seat on the subassembly table 3 according to the spacing of the body positioning holes, and the guide seat 30 and the sleeve 33 are fixed on the subassembly table 4 with fastening bolts. The spring adjusting seat 34 is placed inside the sleeve 33, and the body mating pin 29 is placed inside the guide seat 30 and slides axially freely. The bottom end of the body mating pin 29 is provided with a limiting flange to prevent it from slipping out of the guide seat 30. The upper end of the return spring 32 contacts the bottom of the body mating pin, and the lower end contacts the spring adjusting seat 34. When the locking pin 31 is unlocked from the guide seat 30, the body mating pin 29 is in the highest position.

[0063] Figure 11 It is the rear axle support pin unit, which is composed of the first rear axle support frame 36, the second rear axle support frame 35, the universal positioning support pin shaft 18, and the universal positioning support pin seat 19. Two universal positioning support pin seats 19 are installed at the corresponding positions on the subassembly table. Two universal positioning support pin shafts 18 are placed inside the universal positioning support pin seats 19. The first rear axle support frame 36 and the second rear axle support frame 35 are respectively placed inside the universal positioning support pin shafts 18, and they jointly support the installation position of the rear axle.

[0064] Figure 12 It is the automotive rear coil spring pressing unit, which is composed of the spring upper connecting plate 37, the variable axis connecting threaded rod 38, the angular contact ball bearing 39, the spring lower connecting plate 40, the flat thrust roller bearing 41, the adjusting nut 42, and the extended sleeve 43. When the automotive rear suspension is assembled and lifted onto the production line, the spring upper connecting plate 37 is placed on the rear coil spring. The hexagonal flange on the variable axis connecting threaded rod 38 is connected with the inner hexagonal groove on the spring upper connecting plate 37, which can prevent the variable axis connecting threaded rod 38 from rotating. The axis of the connecting threaded rod of the variable axis connecting threaded rod 38 can be changed during the compression process of the rear coil spring, which is beneficial to the safe and reliable compression of the rear coil spring. The angular contact ball bearing 39 is placed inside the central hole of the rear lower control arm rear coil spring lower soft pad. The spring lower connecting plate 40 is placed on the lower side of the rear lower control arm. The flat thrust roller bearing 41 is placed on the lower side of the spring lower connecting plate 40. The adjusting nut 42 is placed on the lower side of the flat thrust roller bearing 41. The extended sleeve 43 is placed on the lower side of the adjusting nut 42. When using a pneumatic tool to tighten the extended sleeve 43, the extended sleeve 43 drives the adjusting nut 42 to rotate, and the adjusting nut 42 applies the tightening force to the spring lower connecting plate 40 through the flat thrust roller bearing 41, making the rear coil spring compress and become shorter.

[0065] When sub-assembling the rear suspension of the vehicle, first place the rear sub-frame on the rear sub-frame locating pins 7 and support pins 5. Then, place the rear lower control arm, rear brake, and rear trailing arm assembly on the first rear lower control arm support pin 6, the second rear lower control arm support pin 9, the rear brake support pin 10, the rear trailing arm mounting bracket locating pin 12, and the support pin 11 for sub-assembly respectively. Place the rear shock absorber on the rear shock absorber positioning unit 8 for sub-assembly. After the sub-assembly of the rear shock absorber positioning is completed, remove the rear shock absorber positioning support shaft 23. When assembling the rear suspension of the vehicle onto the production line, the body locating pin 13 first contacts the body to fix the relative position of the sub-assembly table and the body on the horizontal plane. Place the rear coil spring on the rear lower control arm, and use the rear coil spring pressing unit 3 to press the rear coil spring. By adjusting the Z-direction position of the sub-assembly table or the body, when the mounting holes of the rear trailing arm mounting bracket, the rear sub-frame mounting hole, and the body mounting hole are coaxial and the gap is small, it is convenient to assemble the rear sub-frame, the rear trailing arm mounting bracket, and the rear shock absorber with the body. Bolt the rear sub-frame, the rear trailing arm mounting bracket, and the rear shock absorber to the body. Slowly loosen the adjustment nut 42 of the rear coil spring pressing unit and remove the rear coil spring pressing unit 3. The two body locating pins 13 of the sub-assembly table use two locating pin shafts and the pin shaft step surface method to accurately position the relative position of the sub-assembly table with respect to the body, enabling accurate and rapid assembly. On vehicles of the same platform, the positions of the body locating pins, the sub-frame, and the rear trailing arm mounting bracket remain unchanged.

[0066] After adopting the above structure, the problems of difficult positioning of the mounting holes between the rear sub-frame and the body, difficult positioning of the mounting holes between the left and right rear trailing arm mounting brackets and the body, and difficult pressing of the rear coil spring are solved. Compared with the general positioning accuracy of ±1mm for the traditional tipping pin type fixture, the positioning accuracy of this device can generally reach within ±0.2mm. The generalization degree of this device is relatively high. The support structure, the bottom plate, the general positioning support pin shaft, and the general positioning support pin seat can be made into general parts, and the rear coil spring pressing unit of the vehicle is also universal.

[0067] Embodiment 2

[0068] See Figures 1 to 12, An assembling and installing device for the rear suspension of an automobile, comprising: a sub-assembly table frame; an assembling and installing table for the rear suspension of an automobile, installed on the sub-assembly table frame, and the assembling and installing table for the rear suspension of an automobile can install the rear suspension of the automobile; an automobile rear coil spring pressing unit, used in cooperation with the assembling and installing table for the rear suspension of the automobile, and the automobile rear coil spring pressing unit can install the rear coil spring of the automobile. The assembling and installing table for the rear suspension of the automobile has: a sub-assembly table base, installed on the sub-assembly table frame; a rear subframe support pin, which can support the rear subframe; a rear lower control arm support pin, which can support the rear lower control arm; a rear subframe positioning pin, which can position the rear subframe; a rear shock absorber positioning unit, which can position the rear shock absorber; a rear brake support pin, which can support the rear brake; a rear trailing arm assembly support pin, which can support the rear trailing arm assembly; a rear trailing arm mounting bracket positioning pin, which can position the rear trailing arm mounting bracket; a mating body positioning pin assembly, which can position the body; a rear axle support pin, which can support the rear axle. It can realize the universality of the rear suspension assembly on the same platform, quickly and accurately position through two positioning pins on the device and the positioning holes of the body, press the rear coil spring through the rear coil spring pressing unit, and adjust the gaps between the rear subframe, the rear trailing arm mounting bracket and the body, so that the rear subframe and the rear trailing arm mounting bracket can be quickly and accurately installed, solving the problems of difficult positioning of the mounting holes between the rear subframe and the body, difficult positioning of the mounting holes between the rear trailing arm mounting bracket and the body, and difficult pressing of the rear coil spring, and greatly improving the assembly efficiency of the rear suspension assembly.

[0069] The rear lower control arm support pin includes a first rear lower control arm support pin and a second rear lower control arm support pin; the rear axle support pin includes a first rear axle support pin and a second rear axle support pin.

[0070] The rear subframe support pin includes a universal positioning support pin seat, a universal positioning support pin shaft is provided on the universal positioning support pin seat, and a rear subframe support bracket is provided on the universal positioning support pin shaft, and the rear subframe support bracket can support the rear subframe.

[0071] The first rear lower control arm support pin and the second rear lower control arm support pin include a universal positioning support pin seat, a universal positioning support pin shaft is provided on the universal positioning support pin seat, and a first rear lower control arm support bracket and a second rear lower control arm support bracket are respectively provided on the universal positioning support pin shafts of the first rear lower control arm support pin and the second rear lower control arm support pin.

[0072] The rear subframe positioning pin includes a universal positioning support pin seat, a universal positioning support pin shaft is provided on the universal positioning support pin seat, and a rear subframe positioning pin shaft is provided on the universal positioning support pin shaft.

[0073] The rear shock absorber positioning unit has a rear shock absorber positioning support pin seat, a rear shock absorber positioning support shaft is provided on the rear shock absorber positioning support pin seat, and a rear shock absorber positioning support arm is provided on the rear shock absorber positioning support shaft.

[0074] The rear brake support pin includes a universal positioning support pin seat, on which a universal positioning support pin shaft is provided, and a rear brake support frame is provided on the universal positioning support pin shaft; the rear trailing arm assembly support unit includes two groups of universal positioning support pin seats and universal positioning support pin shafts, and a rear trailing arm support frame and a rear trailing arm mounting bracket positioning pin are respectively provided on the two universal positioning support pin shafts.

[0075] The automotive rear coil spring pressing unit has an elongated sleeve, an adjusting nut is provided inside the elongated sleeve, and a variable axis connecting threaded rod is also provided and threadedly connected with the adjusting nut; a spring upper connecting plate is provided at the upper end of the variable axis connecting threaded rod, and a spring lower connecting plate is also provided and connected with the adjusting nut through a flat thrust roller bearing, and the automotive rear coil spring can be installed between the spring upper connecting plate and the spring lower connecting plate.

[0076] It can achieve the universality of the rear suspension assembly on the same platform, quickly and accurately position through the two positioning pins on the device and the body positioning holes, press-fit the rear coil spring through the rear coil spring pressing unit, and adjust the gaps between the rear subframe, the rear trailing arm mounting bracket and the body, so that the rear subframe and the rear trailing arm mounting bracket can be quickly and accurately installed, solving the problems of difficult positioning of the installation holes between the rear subframe and the body, difficult positioning of the installation holes between the rear trailing arm mounting bracket and the body, and difficult press-fitting of the rear coil spring, and greatly improving the assembly efficiency of the rear suspension assembly.

[0077] It can quickly and accurately position the body installation holes, quickly and safely press-fit the rear coil spring, quickly and accurately position and assemble the rear subframe and the rear trailing arm mounting bracket, and has the advantages of simple structure and convenient operation.

[0078] After adopting the above structure, the problems of difficult positioning of the installation holes between the rear subframe and the body, difficult positioning of the installation holes between the left and right rear trailing arm mounting brackets and the body, and difficult press-fitting of the rear coil spring are solved; compared with the general positioning accuracy of ±1mm of the traditional tipping pin type fixture, the positioning accuracy of this device can generally reach within ±0.2mm; the generalization degree of this device is relatively high, and the support structure, the bottom plate, the universal positioning support pin shaft, the universal positioning support pin seat can be made into universal parts, and the automotive rear coil spring pressing unit is universal.

[0079] Embodiment III

[0080] The usage method of the above-mentioned assembling and installing device for the rear suspension of an automobile is as follows. When assembling the suspension, first place the rear subframe on the rear subframe locating pins and support pins, and then separately place the rear lower control arm, rear brake, and rear trailing arm assembly on the first rear lower control arm support pin, the second rear lower control arm support pin, the rear brake support pin, the rear trailing arm mounting bracket locating pin, and the rear trailing arm support pin for subassembly; place the rear shock absorber on the rear shock absorber positioning unit for subassembly, and remove the rear shock absorber positioning support shaft after the subassembly of the rear shock absorber positioning is completed. When assembling and installing the rear suspension onto the production line, the body locating pin first contacts the body to fix the relative position of the subassembly table and the body on the horizontal plane. Place the rear coil spring on the rear lower control arm, and use the rear coil spring pressing unit to press the rear coil spring; use bolts to install the rear subframe, rear trailing arm mounting bracket, and rear shock absorber onto the body; loosen the adjusting nut of the rear coil spring pressing unit and remove the rear coil spring pressing unit.

[0081] After adopting the above-mentioned solution, the problems of difficult positioning of the installation holes between the rear subframe and the body, difficult positioning of the installation holes between the left and right rear trailing arm mounting brackets and the body, and difficult pressing of the rear coil spring are solved; compared with the general positioning accuracy of ±1mm for the traditional tilting pin type fixture, the positioning accuracy of this device can generally reach within ±0.2mm; the generalization degree of this device is relatively high, and the support structure, bottom plate, general positioning support pin shaft, and general positioning support pin seat can be made into general parts, and the rear coil spring pressing unit for automobiles is universal.

[0082] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0083] In the present invention, unless otherwise clearly specified and limited, terms such as "install", "set", "connect", "fix", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle rear suspension assembly and subassembly line device, characterized in that: have: Packing table frame; An automobile rear suspension subassembly and assembly platform is installed on the subassembly platform frame, and the automobile rear suspension subassembly and assembly platform can install the automobile rear suspension; The automobile rear coil spring press-fitting unit is used in conjunction with an automobile rear suspension sub-assembly and assembly platform, and the automobile rear coil spring press-fitting unit can install the automobile rear coil spring.

2. The automobile rear suspension assembly and subassembly line device according to claim 1, characterized in that: The automobile rear suspension sub-assembly and assembly platform comprises: A dispensing table seat, installed on the dispensing table frame; A rear subframe support pin capable of supporting the rear subframe; A rear lower control arm support pin, capable of supporting the rear lower control arm; A rear subframe locating pin capable of locating the rear subframe; A rear shock absorber positioning unit capable of positioning the rear shock absorber; A rear brake support pin capable of supporting the rear brake; A rear trailing arm assembly support pin capable of supporting the rear trailing arm assembly; A rear trailing arm mounting bracket locating pin capable of locating the rear trailing arm mounting bracket; Cooperating with the body positioning pin assembly, the body can be positioned; The rear axle support pin can support the rear axle.

3. The automobile rear suspension assembly and subassembly line device as claimed in claim 2, characterized in that: The rear lower control arm support pin includes a first rear lower control arm support pin and a second rear lower control arm support pin; the rear axle support pin includes a first rear axle support pin and a second rear axle support pin.

4. The automobile rear suspension assembly and subassembly line device as claimed in claim 3, characterized in that: The rear sub-frame support pin comprises a universal positioning support pin seat, a universal positioning support pin shaft is arranged on the universal positioning support pin seat, a rear sub-frame support frame is arranged on the universal positioning support pin shaft, and the rear sub-frame support frame can support the rear sub-frame.

5. The automobile rear suspension assembly and subassembly line device as claimed in claim 4, characterized in that: The first rear lower control arm support pin and the second rear lower control arm support pin include a universal positioning support pin seat, a universal positioning support pin shaft is provided on the universal positioning support pin seat, and the first rear lower control arm support pin and the second rear lower control arm support pin are respectively provided with a first rear lower control arm support frame and a second rear lower control arm support frame.

6. The automobile rear suspension assembly and subassembly line device as claimed in claim 5, characterized in that: The rear sub-frame locating pin comprises a universal locating support pin seat, a universal locating support pin shaft is arranged on the universal locating support pin seat, and a rear sub-frame locating pin shaft is arranged on the universal locating support pin shaft.

7. The automobile rear suspension assembly and subassembly line device as claimed in claim 6, characterized in that: The rear shock absorber positioning unit comprises a rear shock absorber positioning support pin seat, a rear shock absorber positioning support shaft is arranged on the rear shock absorber positioning support pin seat, and a rear shock absorber positioning support arm is arranged on the rear shock absorber positioning support shaft.

8. The automobile rear suspension assembly and subassembly line device as claimed in claim 7, characterized in that: The rear brake support pin includes a universal positioning support pin seat, a universal positioning support pin shaft is provided on the universal positioning support pin seat, and a rear brake support frame is provided on the universal positioning support pin shaft; the rear trailing arm assembly support unit includes two groups of universal positioning support pin seats and universal positioning support pin shafts, and the two universal positioning support pin shafts are respectively provided with a rear trailing arm support frame and a rear trailing arm mounting bracket positioning pin.

9. The automobile rear suspension assembly and subassembly line device as claimed in claim 8, characterized in that: The automobile rear coil spring press-fitting unit has an extended sleeve, an adjusting nut is arranged inside the extended sleeve, and a variable axial connecting threaded rod is also provided which is threadedly connected to the adjusting nut; an upper spring connecting plate is provided at the upper end of the variable axial connecting threaded rod, and a lower spring connecting plate is also provided which is connected to the adjusting nut via a planar thrust roller bearing, and the automobile rear coil spring can be installed between the upper spring connecting plate and the lower spring connecting plate.

10. The method for using the vehicle rear suspension assembly and subassembly line device according to any one of claims 1 to 9, characterized in that: When assembling the suspension, first place the rear subframe on the rear subframe locating pin and the support pin, and then place the rear lower control arm, the rear brake, and the rear trailing arm assembly on the first rear lower control arm support pin, the second rear lower control arm support pin, the rear brake support pin, the rear trailing arm mounting bracket locating pin, and the rear trailing arm support pin respectively for assembly; place the rear shock absorber on the rear shock absorber positioning unit for assembly, and remove the rear shock absorber positioning support shaft after the rear shock absorber positioning and assembly is completed; when the rear suspension is assembled on the line, the body locating pin first contacts the body, fix the relative position of the assembly platform and the body on the horizontal plane, place the rear coil spring on the rear lower control arm, and use the rear coil spring pressing unit to press the rear coil spring; use bolts to install the rear subframe, the rear trailing arm mounting bracket, and the rear shock absorber to the body; loosen the rear coil spring pressing unit adjusting nut and remove the rear coil spring pressing unit.

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