High-strength double-swing-arm linkage suspension system

Abstract

The invention discloses a high-strength double-swing-arm linkage suspension system which comprises a vehicle frame and a main suspension beam welded to the vehicle frame, two upper swing arms and two lower swing arms are arranged on the two sides of the main suspension beam respectively, a connecting base is arranged between the upper swing arm and the lower swing arm on the same side, a wheel shaft is arranged on the connecting base, and the wheel shaft is connected with the upper swing arm and the lower swing arm. The two groups of buffer assemblies I are arranged on the corresponding lower swing arms; the two groups of buffering assemblies II and the sludge scraping assembly are arranged on the frame. By arranging the second buffering assembly, the first buffering assembly can be maintained in good time, the problem that the first buffering assembly is prone to being damaged due to multiple times of strong buffering is avoided, the mud scraping assembly can be driven to move and avoid in good time, and part damage caused by hard contact is avoided. The use strength and the use performance of the double-swing-arm linkage suspension can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile suspension structures, and in particular to a high-strength double swing arm linkage suspension system. Background Art

[0002] Suspension is the general term for all force-transmitting connection devices between the frame (or load-bearing body) and the axle (or wheel) of a car. Its function is to transfer the force and torque acting between the wheel and the frame, and to cushion the impact force transmitted to the frame or body by the uneven road surface, and reduce the vibration caused by it, so as to ensure that the car can run smoothly. Suspension can be divided into various types such as single wishbone, double wishbone, double fork arm, etc.

[0003] For example, the Chinese utility model patent with application number: 201920059872.3, entitled Double Wishbone Suspension Device and Automobile, discloses a double wishbone suspension device, including an upper wishbone, a lower wishbone and a support assembly; the support assembly includes a first support seat, an oblique support seat arranged on the first support seat, a second support seat arranged on the oblique support seat and a connecting assembly; the first support seat is connected to one end of the lower wishbone; the second support seat is connected to the upper wishbone, and the other end of the upper wishbone is connected to the other end of the steering knuckle; the vibration is transmitted to the frame through the second support seat, transmitted to the firewall through one end of the first support seat, and transmitted to the Yuanbao beam through the other end of the first support seat, and the generated vibration is decomposed through force, thereby reducing the vibration of the vehicle body and reducing noise.

[0004] The shortcomings of the existing technology are that springs and dampers are usually used in automobile suspension to reduce shock and buffer bumpy roads. When the bumps are large, the damper may be completely compressed. At this time, the process is instantaneous, which can easily cause the damper to be damaged by a rapid collision, affecting its next buffering strength, and there are certain shortcomings. Summary of the invention

[0005] The object of the present invention is to provide a high-strength double swing arm linkage suspension system to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-strength double-swing-arm linkage suspension system, comprising a frame and a main suspension beam arm welded on the frame, two upper suspension arms and two lower suspension arms are arranged on both sides of the main suspension beam arm, a connecting seat is arranged between the upper suspension arm and the lower suspension arm on the same side, and wheel axles are arranged on both connecting seats, and also comprising two groups of buffer one components, which are arranged on the corresponding lower suspension arms; also comprising two groups of buffer two components and a mud scraper component, which are all arranged on the frame; when the bump amplitude is small, the buffer one component works to achieve buffering; when the bump amplitude is large, the movement of the buffer one component triggers the operation of the buffer two component to decompose the buffer force for protection; when the mud scraper component cleans the wheel axle, the buffer two component cooperates with the movement of the mud scraper component to achieve cleaning.

[0007] As a further description of the above technical solution:

[0008] The buffer component includes a connector 1 arranged on the lower arm, and a cross plate 1 is fixedly connected to the connector; a damper is fixedly connected to the cross plate 1, and the damper is connected to the frame through a connector 2, and a buffer spring 1 is arranged between the connector 2 and the cross plate 1, and the elastic force of the buffer spring 1 drives the cross plate 1 away from the connector 2.

[0009] As a further description of the above technical solution:

[0010] The second buffer component includes a vertical rod arranged on the frame, a top plate is fixedly connected to the vertical rod; a bottom plate is slidably connected to the vertical rod, a second buffer spring is fixedly connected between the bottom plate and the top plate, and the elastic force of the second buffer spring drives the bottom plate away from the frame.

[0011] As a further description of the above technical solution:

[0012] The mud scraper assembly is slidably connected to a connecting rod on the frame, the bottom end of the connecting rod is fixedly connected to a base, the bottom of the base is slidably connected to a limiting plate, and the limiting plate is slidably connected to a scraper; the vertical rod is slidably connected to a connecting plate, and a rotating bar is rotatably connected between the connecting plate and the limiting plate, and a water spraying mechanism is also provided on the connecting seat, and the water spraying mechanism is triggered during the movement of the limiting plate to spray water to clean the wheel axle.

[0013] As a further description of the above technical solution:

[0014] The water spraying mechanism includes a water storage cylinder and a water spraying box fixedly connected to a connecting seat, a piston plate 1 being slidably connected in the water spraying box; the piston plate 1 being fixedly connected to a limit plate via a push rod, a water spraying pipe being connected to the water spraying box, one end of the water spraying pipe being connected to a water spraying head, and the water spraying box being connected to the water storage cylinder via a one-way pipe.

[0015] As a further description of the above technical solution:

[0016] The water storage cylinder is provided with an anti-sway component, and the limit plate triggers the movement of the anti-sway component through the trigger component.

[0017] As a further description of the above technical solution:

[0018] The anti-sway component includes a piston plate 2 which is slidably connected in the water storage cylinder, and a threaded rod is fixedly connected to the piston plate 2; a guide unit for limiting the movement of the piston plate 2 is also provided in the water storage cylinder.

[0019] As a further description of the above technical solution:

[0020] The guiding unit comprises a fixing rod fixedly connected in the water storage cylinder, and the second piston plate is slidably connected to the fixing rod.

[0021] As a further description of the above technical solution:

[0022] The trigger assembly includes a ratchet ring rotatably connected to the water storage cylinder, and the threaded rod is threadedly connected to the ratchet ring; the ratchet ring is connected to a gear ring through a limiting unit, and the limit plate is fixedly connected to a toothed plate, and the toothed plate meshes with the gear ring during its movement.

[0023] As a further description of the above technical solution:

[0024] The limiting unit comprises a ratchet block slidably connected to the gear ring, a connecting spring is fixedly connected between the ratchet block and the gear ring, and the elastic force of the connecting spring drives the ratchet block to mesh with the ratchet ring.

[0025] In the above technical solution, the high-strength double swing arm linkage suspension system provided by the present invention has the following beneficial effects:

[0026] The present invention arranges the mutual cooperation among the frame, the main suspension beam arm, the upper swing arm, the lower swing arm, the connecting seat, the wheel axle, the buffer component one, the buffer component two and the mud scraper component. By arranging the buffer component two, the buffer component one can be timely maintained to avoid the problem that the buffer component one is easily damaged due to multiple strong buffering. The mud scraper component can also be driven to move and avoid in time to avoid damage to parts due to hard contact. The device can improve the use strength and performance of the double swing arm linkage suspension through the mutual cooperation among the various structures.

[0027] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0028] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0030] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of another perspective of the overall structure provided by an embodiment of the present invention;

[0032] Figure 3 A schematic diagram of a local structure provided by an embodiment of the present invention;

[0033] Figure 4 A schematic diagram of the structural connection of a buffer component 1, a buffer component 2 and a mud scraper component provided in an embodiment of the present invention;

[0034] Figure 5 A sectional side view of a water spray mechanism provided by an embodiment of the present invention;

[0035] Figure 6 A sectional top view of a water spray mechanism provided by an embodiment of the present invention;

[0036] Figure 7 for Figure 3 The enlarged view of point A in the middle;

[0037] Figure 8 for Figure 3 The enlarged view of point B in the middle;

[0038] Fig. 9 for Figure 4 Enlarged view of point C in the middle;

[0039] Fig.10 for Figure 6 Enlarged view of point D in the middle.

[0040] Description of reference numerals:

[0041] 1. Main suspension arm; 11. Upper swing arm; 12. Lower swing arm; 13. Connecting seat; 14. Axle; 21. Connecting head 1; 22. Horizontal plate 1; 23. Damper; 24. Connecting head 2; 25. Buffer spring 1; 31. Vertical rod; 32. Top plate; 33. Bottom plate; 34. Buffer spring 2; 41. Connecting rod; 42. Base; 43. Limiting plate; 44. Scraper; 45. Connecting plate; 46. Rotating bar; 51. Water storage cylinder; 52. Water spraying box; 53. Piston plate 1; 54. Push rod; 55. Water spraying pipe; 56. Water spraying head; 57. One-way pipe; 61. Piston plate 2; 62. Threaded rod; 7. Fixed rod; 81. Ratchet ring; 82. Gear ring; 83. Tooth plate; 91. Ratchet block; 92. Connecting spring. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0043] See also Figure 1-10 The present embodiment provides a high-strength double swing arm linkage suspension system, including a vehicle frame and a main suspension beam arm 1 welded on the vehicle frame, two upper swing arms 11 and two lower swing arms 12 are arranged on both sides of the main suspension beam arm 1, a connecting seat 13 is arranged between the upper swing arm 11 and the lower swing arm 12 on the same side, and a wheel axle 14 is arranged on the two connecting seats 13, the vehicle frame, the main suspension beam arm 1, the upper swing arm 11, the lower swing arm 12, the connecting seat 13 and the wheel axle 14 are all existing parts, and the matching installation between the various parts is also an existing mature technology, which will not be described in detail here, and also includes two groups of buffer one components, which are arranged on the corresponding lower swing arm 12; also includes two groups of buffer two components and a mud scraper component, which are all arranged on the vehicle frame; when the bump amplitude When the bump amplitude is relatively large, the movement of the buffer component triggers the operation of the buffer component 2 to decompose and protect the buffer force. At this time, the buffer force generated by the bump increases instantly or exceeds the buffer range of the buffer component 1. The setting of the buffer component 2 can effectively grade its larger buffer force so that the vehicle can adapt to different environments. When the scraper component cleans the wheel axle 14, the buffer component 2 cooperates with the scraper component to clean the wheel axle 14. Through the coordinated use of the buffer component 2, the scraper component is driven to move and avoid in time to avoid damage to parts caused by hard contact.

[0044] In an embodiment further provided by the present invention, a buffer component includes a connector 21 arranged on the lower swing arm 12, and a cross plate 22 is fixedly connected to the connector; a damper 23 is fixedly connected to the cross plate 22, and the damper 23 is connected to the frame through a connector 24, and a buffer spring 25 is arranged between the connector 24 and the cross plate 22, and the elastic force of the buffer spring 25 drives the cross plate 22 away from the connector 24, and the damper 23 is an existing device. The function of the damper 23 is to provide resistance to movement and consume movement energy, thereby achieving the effect of vibration reduction and energy dissipation. The buffer spring 25 is sleeved on the outside of the damper 23, and the buffer spring 25 can play a connecting and supporting role to ensure that the damper 23 can stably withstand various forces and weights during operation, and at the same time play a buffering and stabilizing role, so that the damper 23 can adapt to different loads and vibration environments.

[0045] Furthermore, the buffer component 2 includes a vertical rod 31 arranged on the frame, and a top plate 32 is fixedly connected to the vertical rod 31; a bottom plate 33 is slidably connected to the vertical rod 31, and a buffer spring 2 34 is fixedly connected between the bottom plate 33 and the top plate 32. The elastic force of the buffer spring 2 34 drives the bottom plate 33 away from the frame. The function of the vertical rod 31 is to limit and fix the top plate 32 and the bottom plate 33. When the damper 23 contracts greatly, the horizontal plate 1 22 arranged on the damper 23 moves and drives the bottom plate 33 connected to the bottom of the buffer spring 2 34 to move synchronously. At this time, the buffer spring 2 34 is deformed to buffer and decompose the force applied to the damper 23.

[0046] Furthermore, the mud scraper assembly is slidably connected to a connecting rod 41 on the frame, and the connecting rod 41 slides at the bottom of the frame so that when the wheel rotates, the connecting rod 41 can be slidably adjusted accordingly, and the bottom end of the connecting rod 41 is fixedly connected to a base 42, and the bottom of the base 42 is slidably connected to a limiting plate 43, and a scraper 44 is slidably connected to the limiting plate 43, and the scraper 44 is mainly used to clean the dirt attached to the inner side of the wheel axle 14; a connecting plate 45 is slidably connected to the vertical rod 31, and a rotating bar 46 is rotatably connected between the connecting plate 45 and the limiting plate 43, and a water spraying mechanism is also provided on the connecting seat 13. The water spraying mechanism is triggered during the movement of the limiting plate 43 to spray water to clean the wheel axle 14. By setting up a matching water spraying mechanism, the dried pollutants on the wheel axle 14 can be sprayed with water, which is convenient for rapid treatment.

[0047] In an embodiment further provided by the present invention, the water spraying mechanism includes a water storage cylinder 51 fixedly connected to the connecting seat 13 and a water spraying box 52, in which a piston plate 53 is slidably connected; the piston plate 53 is fixedly connected to the limit plate 43 through a push rod 54, and the water spraying box 52 is connected to a water spraying pipe 55, one end of the water spraying pipe 55 is connected to a water spraying head 56, and the water spraying box 52 is connected to the water storage cylinder 51 through a one-way pipe 57.

[0048] In the embodiment provided by the present invention, an anti-sway component is provided in the water storage cylinder 51, and the limit plate 43 triggers the movement of the anti-sway component through the trigger component. By providing the anti-sway component, the liquid inside the water storage cylinder 51 can be protected to prevent the liquid from swaying and accumulating energy in the water storage cylinder 51 due to vehicle bumps, thereby affecting the stability of the vehicle.

[0049] Specifically, the anti-sway component includes a piston plate 61 slidably connected in the water storage cylinder 51, and a threaded rod 62 is fixedly connected to the piston plate 61; a guide unit for limiting the movement of the piston plate 61 is also provided in the water storage cylinder 51. By setting the guide component, the piston plate 61 can be limited to move vertically in the water storage cylinder 51 without rotating. Because the threaded rod 62 is fixedly connected to the piston plate 61, the rotation of the threaded rod 62 can be limited.

[0050] In the solution further provided by the present invention, the guiding unit includes a fixed rod 7 fixedly connected to the water storage cylinder 51, a piston plate 61 is slidably connected to the fixed rod 7, and a hole matching the fixed rod 7 is provided on the piston plate 61. A certain dynamic sealing structure needs to be provided at the connection between the two to ensure that the liquid does not enter the top of the piston plate through the connection, and a water inlet is also provided on the water storage cylinder 51.

[0051] In the solution further provided by the present invention, the trigger assembly includes a ratchet ring 81 rotatably connected to the water storage cylinder 51, and the threaded rod 62 is threadedly connected to the ratchet ring 81; the ratchet ring 81 is connected to a gear ring 82 through a limiting unit, and the limit plate 43 is fixedly connected to a tooth plate 83, which engages with the gear ring 82 during its movement. The inner ring of the ratchet ring 81 is provided with a thread that is compatible with the threaded rod 62, so that the threaded rod 62 can move vertically under the restriction of the guide unit and the rotation of the ratchet ring 81.

[0052] In the solution further provided by the present invention, the limiting unit includes a ratchet block 91 slidably connected to the gear ring 82, and a connecting spring 92 is fixedly connected between the ratchet block 91 and the gear ring 82. The elastic force of the connecting spring 92 drives the ratchet block 91 to engage with the ratchet ring 81. By setting the limiting unit, the tooth plate 83 of the limiting plate 43 can drive the ratchet ring 81 to rotate through the gear ring 82 during the resetting process, driving the threaded rod 62 to move downward to adjust the space in the water storage cylinder 51, and when the limiting plate 43 is reset, it will also drive the piston plate 2 61 in the water spray box 52 to reset. At this time, negative pressure is generated in the water spray box 52 and the water from the water storage cylinder 51 is sucked into the water spray box 52 for storage.

[0053] Working principle: When the vehicle passes through a bumpy road section, the wheels will move in the vertical direction. At this time, the damper 23 and the buffer spring 1 25 arranged between the connector 1 21 and the connector 2 24 will shrink to relieve the bump force. When the bumpy road surface becomes more and more serious, the shrinkage of the damper 23 will increase. When its shrinkage is about to reach a critical value, the cross plate 1 22 arranged on the damper 23 will contact the bottom plate 33 on the buffer spring 2 34 and push the bottom plate 33 to move upward synchronously. The bottom plate 33 moves upward to compress the buffer spring 2 34. At this time, the buffer spring 2 34 can decompose the force received by the damper 23 to avoid its violent shrinkage and collision. At this time, the buffer spring 2 34 cooperates with the buffer 1 component to move synchronously to achieve buffering.

[0054] When the vehicle is running, a large amount of pollutants will be attached to the wheel axle 14. After the vehicle is running, the wheel axle 14 rotates and contacts the scraper 44. The scraper 44 can clean the attached pollutants. When the pollutants are relatively hard, the scraper 44 will be resisted and move away from the wheel axle 14. When the scraper 44 moves, it drives the limit plate 43 to move and pushes the connecting plate 45 upward through the rotating bar 46. The connecting plate 45 moves upward and contacts the bottom plate 33. The bottom plate 33 pushes the buffer spring 34 to be compressed. When the limit plate 43 moves, The piston plate 1 53 in the water spray box 52 will be pushed by the push plate to move to squeeze the liquid stored inside, and spray water on the wheel shaft 14, so that the condensed pollutants can be moistened, and the scraper 44 can be reset under the action of the buffer spring 2 34 and clean the moistened pollutants. The movement of the limit plate 43 will also drive the tooth plate 83 to move, and the movement of the tooth plate 83 will mesh with the gear ring 82 on the water storage cylinder 51. At this time, the rotation direction of the gear ring 82 is the same as the helical tooth direction of the ratchet block 91, so the rotation of the gear ring 82 will push the ratchet block 91 to rotate. The block 91 moves and squeezes the connecting spring 92 until the water spraying is completed. At this time, the buffer spring 2 34 pushes the bottom plate 33 to reset. The bottom plate 33 resets and squeezes the connecting plate 45, so that the movable limit plate 43 drives the movable scraper 44 to reset under the action of the rotating bar 46. The limit plate 43 drives the push rod 54 and the tooth plate 83 to reset synchronously. The push rod 54 resets and drives the piston plate 1 53 to move, so that negative pressure is generated in the water spray box 52, and the water in the water storage cylinder 51 can be sucked out through the one-way pipe 57. The gear ring 82 is put into the water spray tank 52 for use, and the toothed plate 83 resets the meshing gear ring 82 to rotate in the opposite direction. At this time, the rotation direction of the gear ring 82 contacts the plane side of the ratchet block 91. The rotation of the gear ring 82 drives the ratchet ring 81 to rotate through the engagement of the ratchet block 91. The rotation of the ratchet ring 81 drives the restricted threaded rod 62 to move vertically downward. The downward movement of the threaded rod 62 drives the piston plate 2 61 to move in the water storage cylinder 51, so that the piston plate 2 61 keeps in contact with the liquid surface to prevent the liquid surface from shaking and storing energy to affect the driving of the vehicle.

[0055] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-strength double swing arm linkage suspension system, comprising a vehicle frame and a main suspension beam arm (1) welded to the vehicle frame, two upper swing arms (11) and two lower swing arms (12) are arranged on both sides of the main suspension beam arm (1), a connecting seat (13) is arranged between the upper swing arm (11) and the lower swing arm (12) on the same side, and a wheel axle (14) is arranged on both connecting seats (13), characterized in that: It also includes two groups of buffer components, which are arranged on the corresponding lower swing arms (12); It also includes two sets of buffer second components and a mud scraper component, both of which are arranged on the vehicle frame; When the bump amplitude is small, the buffer component works to achieve buffering; When the bump amplitude is large, the movement of the buffer component 1 triggers the operation of the buffer component 2 to decompose the buffer force for protection; When the scraper assembly cleans the wheel shaft (14), the second buffer assembly cooperates with the scraper assembly to move to achieve cleaning.

2. A high-strength double swing arm linkage suspension system according to claim 1, characterized in that: The buffer assembly comprises a connector (21) arranged on the lower swing arm (12), and a transverse plate (22) is fixedly connected to the connector; A damper (23) is fixedly connected to the transverse plate (22), and the damper (23) is connected to the frame via a second connector (24). A buffer spring (25) is provided between the second connector (24) and the transverse plate (22), and the elastic force of the buffer spring (25) drives the transverse plate (22) away from the second connector (24).

3. The high-strength double swing arm linkage suspension system according to claim 1, characterized in that: The second buffer component comprises a vertical rod (31) arranged on the frame, and a top plate (32) is fixedly connected to the vertical rod (31); A bottom plate (33) is slidably connected to the vertical rod (31), and a second buffer spring (34) is fixedly connected between the bottom plate (33) and the top plate (32), and the elastic force of the second buffer spring (34) drives the bottom plate (33) away from the vehicle frame.

4. A high-strength double swing arm linkage suspension system according to claim 3, characterized in that: The mud scraping assembly is slidably connected to a connecting rod (41) on the vehicle frame, the bottom end of the connecting rod (41) is fixedly connected to a base (42), the bottom of the base (42) is slidably connected to a limiting plate (43), and a scraping plate (44) is slidably connected to the limiting plate (43); A connecting plate (45) is slidably connected to the vertical rod (31), a rotating bar (46) is rotatably connected between the connecting plate (45) and the limiting plate (43), and a water spraying mechanism is also provided on the connecting seat (13). The water spraying mechanism is triggered during the movement of the limiting plate (43) to spray water to clean the wheel axle (14).

5. A high-strength double swing arm linkage suspension system according to claim 4, characterized in that: The water spray mechanism comprises a water storage cylinder (51) fixedly connected to a connection seat (13) and a water spray box (52), wherein a piston plate 1 (53) is slidably connected to the water spray box (52); The piston plate 1 (53) is fixedly connected to the limit plate (43) via a push rod (54); a water spray pipe (55) is connected to the water spray box (52); one end of the water spray pipe (55) is connected to a water spray head (56); and the water spray box (52) is connected to the water storage cylinder (51) via a one-way pipe (57).

6. A high-strength double swing arm linkage suspension system according to claim 5, characterized in that: An anti-sway component is arranged in the water storage cylinder (51), and the limit plate (43) triggers the movement of the anti-sway component through the trigger component.

7. A high-strength double swing arm linkage suspension system according to claim 6, characterized in that: The anti-swaying assembly comprises a second piston plate (61) slidably connected in the water storage cylinder (51), and a threaded rod (62) is fixedly connected to the second piston plate (61); The water storage cylinder (51) is also provided with a guide unit for limiting the movement of the second piston plate (61).

8. The high-strength double swing arm linkage suspension system according to claim 7, characterized in that: The guiding unit comprises a fixing rod (7) fixedly connected in the water storage cylinder (51), and the second piston plate (61) is slidably connected to the fixing rod (7).

9. The high-strength double swing arm linkage suspension system according to claim 7, characterized in that: The trigger assembly comprises a ratchet ring (81) rotatably connected to the water storage cylinder (51), and the threaded rod (62) is threadedly connected to the ratchet ring (81); The ratchet ring (81) is connected to a gear ring (82) via a limiting unit, and the limit plate (43) is fixedly connected to a toothed plate (83), which meshes with the gear ring (82) during its movement.

10. A high-strength double swing arm linkage suspension system according to claim 9, characterized in that: The limiting unit comprises a ratchet block (91) slidably connected to the gear ring (82), a connecting spring (92) is fixedly connected between the ratchet block (91) and the gear ring (82), and the elastic force of the connecting spring (92) drives the ratchet block (91) to mesh with the ratchet ring (81).

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