Multi-connecting-rod type independent rear suspension system

Abstract

The utility model provides a multi-connecting-rod type independent rear suspension system, and belongs to the technical field of automobile accessories. The rear suspension device comprises a rear suspension body, a transfer case, a left upper arm, a left lower arm, a right upper arm and a right lower arm, a left fixing groove and a right fixing groove are formed in the two sides of the lower end of the rear suspension body respectively, the left lower arm and the right lower arm extend into the left fixing groove and the right fixing groove respectively to be fixed, and a left mounting groove and a right mounting groove are formed in the two sides of the upper end of the rear suspension body respectively. And the left upper arm and the right upper arm stretch into the left mounting groove and the right mounting groove correspondingly to be fixed, a first damping base and a second damping base are fixedly arranged on the left lower arm and the right lower arm correspondingly, and a first damping device and a second damping device are fixedly mounted in the first damping base and the second damping base correspondingly. The damping device has the advantages of being stable in structure and good in damping effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive parts, and relates to a multi-link independent rear suspension system. Background Art

[0002] The main function of an automotive rear suspension system is to connect the vehicle frame and the axle, reduce the impact on the vehicle body, improve the ground adhesion of the wheels, thereby improving the driving stability of the vehicle, and reducing the tilt and vibration of the vehicle body.

[0003] Chinese Patent with Patent Publication No. CN206107342U discloses a rear suspension device, which includes a suspension plate connected to a loading machine, an upper pull rod hinged to the upper part of the suspension plate, two connecting ear plates symmetrically arranged on the left and right on the suspension plate surface, and two lifting cylinders; it also includes two groups of lower pull rod structures respectively arranged on the two connecting ear plates; each group of lower pull rod structures includes a lower pull rod, a hinge seat and a connecting plate. One end of the connecting plate is hinged to the lower end of the connecting ear plate, the other end of the connecting plate is hinged to the hinge seat, one end of the lower pull rod is connected to the hinge seat, and the other end of the lower pull rod is connected to a trailed agricultural machine.

[0004] In the rear suspension device provided by this patent, there is no structure for placing a shock absorption device, and it is easily affected by vibration during actual use. Content of the Utility Model

[0005] The purpose of the utility model is to provide a multi-link independent rear suspension system for the above problems existing in the prior art.

[0006] The purpose of the utility model can be achieved by the following technical solutions: A multi-link independent rear suspension system includes a rear suspension main body, a transfer case, a left upper arm, a left lower arm, a right upper arm and a right lower arm. On both sides of the lower end of the rear suspension main body, a left fixing groove and a right fixing groove are respectively formed. The left lower arm and the right lower arm respectively extend into the left fixing groove and the right fixing groove to achieve fixation. On both sides of the upper end of the rear suspension main body, a left mounting groove and a right mounting groove are respectively formed. The left upper arm and the right upper arm respectively extend into the left mounting groove and the right mounting groove to achieve fixation. A first shock absorption base and a second shock absorption base are respectively fixedly arranged on the left lower arm and the right lower arm. A first shock absorption device and a second shock absorption device are respectively fixedly installed in the first shock absorption base and the second shock absorption base. The transfer case includes a front box body and a rear box body. A connecting plate is formed on the rear suspension main body. One end of the front box body is fixedly attached to the connecting plate. A fixing column is formed on the rear suspension main body. A fixing plate is formed on the rear box body. The fixing column is inserted into the fixing plate to achieve fixation.

[0007] In the above multi-link independent rear suspension system, first connection holes and second connection holes are respectively opened at the tops of the first shock absorption device and the second shock absorption device.

[0008] In the above-mentioned multi-link independent rear suspension system, a first reinforcing plate and a second reinforcing plate are respectively arranged on the rear suspension main body outside the left fixing groove and the right fixing groove.

[0009] In the above-mentioned multi-link independent rear suspension system, a left rear wheel axle and a right rear wheel axle are respectively connected to both sides of the transfer case, and a left rear wheel and a right rear wheel are respectively connected to the outside of the left rear wheel axle and the right rear wheel axle.

[0010] In the above-mentioned multi-link independent rear suspension system, a left rear hub is fixedly connected between the upper left arm and the lower left arm, a right rear hub is fixedly connected between the upper right arm and the lower right arm, and the left rear hub and the right rear hub are respectively connected to the left rear wheel axle and the right rear wheel axle.

[0011] Compared with the prior art, a multi-link independent rear suspension system provided by the present utility model has the following beneficial effects: 1. By respectively arranging a first shock absorption base and a second shock absorption base on the lower left arm and the lower right arm, the first shock absorption device and the second shock absorption device are cooperatively connected with the lower left arm and the lower right arm, effectively improving the shock absorption effect of the present utility model; 2. By arranging a left fixing groove and a right fixing groove on the rear suspension main body, the left fixing groove and the right fixing groove wrap the ends of the lower left arm and the lower right arm, playing a protective role for the lower left arm and the lower right arm; 3. By arranging a fixing column on the rear suspension main body and arranging a fixing plate on the rear box body, this structure improves the connection stability between the transfer case and the rear suspension main body. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0013] Figure 2 is a schematic diagram of the structure of the present utility model from another angle.

[0014] In the figure: 1. Rear suspension main body; 11. Left fixing groove; 111. First reinforcing plate; 12. Right fixing groove; 121. Second reinforcing plate; 13. Left mounting groove; 14. Right mounting groove; 15. Connecting plate; 16. Fixing column; 2. Transfer case; 21. Front box body; 22. Rear box body; 23. Fixing plate; 24. Left rear wheel axle; 25. Right rear wheel axle; 3. Upper left arm; 4. Lower left arm; 41. First shock absorption base; 5. Upper right arm; 6. Lower right arm; 61. Second shock absorption base; 7. First shock absorption device; 71. First connection hole; 8. Second shock absorption device; 81. Second connection hole; 9. Left rear wheel; 10. Right rear wheel; 110. Left rear hub; 120. Right rear hub. Detailed Embodiment

[0015] The following are specific embodiments of the present utility model and, in conjunction with the accompanying drawings, the technical solutions of the present utility model will be further described. However, the present utility model is not limited to these embodiments.

[0016] As Figures 1 to 2 shown, this embodiment includes a rear suspension main body 1, a transfer case 2, a left upper arm 3, a left lower arm 4, a right upper arm 5, a right lower arm 6, a first shock absorber base 41, a second shock absorber base 61, a first shock absorber device 7, a second shock absorber device 8, a left rear wheel 9, and a right rear wheel 10. The left upper arm 3, the left lower arm 4, the right upper arm 5, and the right lower arm 6 are respectively fixed at four corners of the rear suspension main body 1. On both sides of the lower end of the rear suspension main body 1, a left fixing groove 11 and a right fixing groove 12 are respectively formed. The end parts of the left lower arm 4 and the right lower arm 6 respectively extend into the left fixing groove 11 and the right fixing groove 12 and are fixed by fasteners. The left fixing groove 11 and the right fixing groove 12 can protect the end parts of the left lower arm 4 and the right lower arm 6. On both sides of the upper end of the rear suspension main body 1, a left mounting groove 13 and a right mounting groove 14 are respectively formed. The left upper arm 3 and the right upper arm 5 respectively extend into the left mounting groove 13 and the right mounting groove 14 and are fixed by fasteners. The first shock absorber base 41 and the second shock absorber base 61 are respectively fixed on the left lower arm 4 and the right lower arm 6 and are located on the outer sides of the left lower arm 4 and the right lower arm 6. The first shock absorber device 7 and the second shock absorber device 8 are respectively fixedly installed in the first shock absorber base 41 and the second shock absorber base 61, and the first shock absorber device 7 and the second shock absorber device 8 are longitudinally installed. First connection holes 71 and second connection holes 81 are respectively formed at the tops of the first shock absorber device 7 and the second shock absorber device 8. The first shock absorber device 7 and the second shock absorber device 8 can be connected to the force transmission device inside the vehicle through the first connection holes 71 and the second connection holes 81.

[0017] As Figures 1 to 2 shown, the transfer case 2 includes a front box body 21 and a rear box body 22. A connecting plate 15 is formed on the rear suspension main body 1. One end of the front box body 21 is fixedly attached to the connecting plate 15. Two fixing columns 16 are formed on the rear suspension main body 1 near the rear box body 22. A fixing plate 23 extending to both sides is formed on the rear box body 22. The fixing columns 16 are inserted into the fixing plate 23 to fix the rear box body 22 to the rear suspension main body 1. Left and right rear wheel axles 24 and 25 are respectively connected to both sides of the transfer case 2. The left rear wheel 9 and the right rear wheel 10 are respectively connected to the outer sides of the left rear wheel axle 24 and the right rear wheel axle 25. The left rear wheel axle 24 and the right rear wheel axle 25 can drive the left rear wheel 9 and the right rear wheel 10 to rotate.

[0018] Further elaborating, as Figures 1 to 2As shown, first reinforcing pieces 111 and second reinforcing pieces 121 are respectively provided on the rear suspension body 1 outside the left fixing groove 11 and the right fixing groove 12. The first reinforcing pieces 111 and the second reinforcing pieces 121 enhance the structural strength of the rear suspension body 1 outside the left fixing groove 11 and the right fixing groove 12, and further enhance the stability when the left lower arm 4 and the right lower arm 6 are connected to the left fixing groove 11 and the right fixing groove 12.

[0019] For further details, as Figures 1 to 2 shown, a left rear wheel hub 110 is fixedly connected between the upper left arm 3 and the lower left arm 4, and a right rear wheel hub 120 is fixedly connected between the upper right arm 5 and the lower right arm 6. The left rear wheel hub 110 and the right rear wheel hub 120 are respectively connected to the left rear axle 24 and the right rear axle 25.

[0020] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains may make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0021] Although various terms are used more in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A multi-link independent rear suspension system, comprising a rear suspension main body (1), a transfer case (2), a left upper arm (3), a left lower arm (4), a right upper arm (5) and a right lower arm (6), characterized in that: On both sides of the lower end of the rear suspension main body (1), a left fixing groove (11) and a right fixing groove (12) are respectively formed. The left lower arm (4) and the right lower arm (6) are respectively inserted into the left fixing groove (11) and the right fixing groove (12) to achieve fixation. On both sides of the upper end of the rear suspension main body (1), a left mounting groove (13) and a right mounting groove (14) are respectively formed. The left upper arm (3) and the right upper arm (5) are respectively inserted into the left mounting groove (13) and the right mounting groove (14) to achieve fixation. A first shock-absorbing base (41) and a second shock-absorbing base (61) are respectively fixedly arranged on the left lower arm (4) and the right lower arm (6). A first shock-absorbing device (7) and a second shock-absorbing device (8) are respectively fixedly installed in the first shock-absorbing base (41) and the second shock-absorbing base (61). The transfer case (2) includes a front case body (21) and a rear case body (22). A connecting plate (15) is formed on the rear suspension main body (1). One end of the front case body (21) is fixedly attached to the connecting plate (15). A fixing column (16) is formed on the rear suspension main body (1). A fixing plate (23) is formed on the rear case body (22). The fixing column (16) is inserted into the fixing plate (23) to achieve fixation.

2. The multi-link independent rear suspension system according to claim 1, wherein: First connecting holes (71) and second connecting holes (81) are respectively formed at the tops of the first shock-absorbing device (7) and the second shock-absorbing device (8).

3. A multi-link independent rear suspension system according to claim 1, characterized in that: A first reinforcing piece (111) and a second reinforcing piece (121) are respectively arranged on the rear suspension main body (1) outside the left fixing groove (11) and the right fixing groove (12).

4. A multi-link independent rear suspension system according to claim 1, characterized in that: A left rear wheel axle (24) and a right rear wheel axle (25) are respectively connected to both sides of the transfer case (2). A left rear wheel (9) and a right rear wheel (10) are respectively connected to the outsides of the left rear wheel axle (24) and the right rear wheel axle (25).

5. A multi-link independent rear suspension system according to claim 4, characterized in that: A left rear hub (110) is fixedly connected between the left upper arm (3) and the left lower arm (4). A right rear hub (120) is fixedly connected between the right upper arm (5) and the right lower arm (6). The left rear hub (110) and the right rear hub (120) are respectively connected to the left rear wheel axle (24) and the right rear wheel axle (25).

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