A high-strength double swing arm linkage suspension system

Abstract

The present invention discloses a high-strength double swing arm linkage suspension system, which includes a vehicle frame and a main suspension beam arm welded to the vehicle frame. Two upper swing arms and two lower swing arms are arranged on both sides of the main suspension beam arm. A connecting seat is arranged between the upper swing arm and the lower swing arm on the same side, and a wheel axle is arranged on the connecting seat. The system further includes two groups of buffer components I, which are arranged on the corresponding lower swing arms; and two groups of buffer components II and a mud scraping component, which are both arranged on the vehicle frame. By arranging the buffer components II, the buffer components I can be maintained in a timely manner, avoiding the problem that the buffer components I are easily damaged due to multiple strong buffering. The mud scraping component can also be driven to move and avoid in a timely manner, preventing damage to parts caused by hard contact. Through the mutual cooperation of various structures, the use strength and performance of the double swing arm linkage suspension can be improved.

Description

Technical Field

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

[0002] A suspension is a general term for all force transmission connecting devices between the vehicle frame (or load-bearing body) and the axle (or wheel) of an automobile. Its function is to transmit the force and torque acting between the wheel and the vehicle frame, and to buffer the impact force transmitted from the uneven road surface to the vehicle frame or body, and reduce the resulting vibration, so as to ensure that the vehicle can drive smoothly. Suspensions can be divided into various types such as single transverse arm, double transverse arm, double wishbone, etc.

[0003] For example, the Chinese utility model patent with the application number 201920059872.3 and the name of double wishbone suspension device and vehicle discloses a double wishbone suspension device, which includes an upper wishbone, a lower wishbone and a support assembly; the support assembly includes a first support seat, an inclined support seat arranged on the first support seat, a second support seat arranged on the inclined 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 vehicle frame through the second support seat, transmitted to the firewall through one end of the first support seat, and transmitted to the cross member through the other end of the first support seat, and the generated vibration is decomposed by force, reducing the vibration of the vehicle body and reducing noise.

[0004] The deficiencies of the prior art are as follows: Springs and dampers are usually used in automotive suspensions to cushion and buffer bumpy roads. When the bump amplitude is large, the damper may be completely compressed, and this process occurs instantaneously, easily causing the damper to collide and be damaged quickly, affecting its next buffering strength, and there are certain deficiencies. Summary of the Invention

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

[0006] To achieve the above object, the present invention provides the following technical solution: a high-strength double swing arm linkage suspension system, including a vehicle frame and a main suspension beam arm welded to the vehicle frame. Two upper swing arms and two lower swing arms are arranged on both sides of the main suspension beam arm. A connecting seat is arranged between the upper swing arm and the lower swing arm on the same side. Wheel axles are arranged on both connecting seats. The system further includes two sets of first buffer components arranged on the corresponding lower swing arms; two sets of second buffer components and a mud scraping component, which are all arranged on the vehicle frame; when the bump amplitude is small, the first buffer components work to achieve buffering; when the bump amplitude is large, the first buffer components move to trigger the second buffer components to work and decompose the buffering force for protection; when the mud scraping component cleans the wheel axles, the second buffer components cooperate with the mud scraping component to move to achieve cleaning.

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

[0008] The first buffer component includes a first connecting head arranged on the lower swing arm, and a first cross plate is fixedly connected to the connecting head; a damper is fixedly connected to the first cross plate, and the damper is connected to the vehicle frame through a second connecting head. A first buffer spring is arranged between the second connecting head and the first cross plate, and the elastic force of the first buffer spring drives the first cross plate away from the second connecting head.

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

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

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

[0012] The mud scraping component is slidably connected to a connecting rod on the vehicle frame. The bottom end of the connecting rod is fixedly connected to a base. A limiting plate is slidably connected to the bottom of the base. A scraping plate is slidably connected to the limiting plate; a connecting plate is slidably connected to the vertical rod. A rotating bar is rotatably connected between the connecting plate and the limiting plate. A water spraying mechanism is further arranged on the connecting seat. The water spraying mechanism is triggered to work to spray water on the wheel axles during the movement stroke of the limiting plate for cleaning.

[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 the connecting seat. A first piston plate is slidably connected in the water spraying box; the first piston plate is fixedly connected to the limiting plate through a pushing rod. A water spraying pipe is communicated with the water spraying box. One end of the water spraying pipe is communicated with a water spraying head. The water spraying box is communicated with the water storage cylinder through a one-way pipe.

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

[0016] An anti-slosh component is provided in the water storage cylinder, and the limiting plate triggers the movement of the anti-slosh component through a trigger component.

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

[0018] The anti-slosh component includes a second piston plate slidably connected in the water storage cylinder, and a threaded rod is fixedly connected to the second piston plate; a guiding unit for restricting the movement of the second piston plate is also provided in the water storage cylinder.

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

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

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

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

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

[0024] The limiting unit includes 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 beneficial effects of a high-strength double swing arm linkage suspension system provided by the present invention are as follows:

[0026] By setting the mutual cooperation among the vehicle frame, the main suspension beam arm, the upper swing arm, the lower swing arm, the connecting seat, the wheel axle, the first buffer component, the second buffer component, and the mud scraping component, and by setting the second buffer component, the first buffer component can be maintained in a timely manner to avoid the problem that the first buffer component is easily damaged due to multiple strong buffering, and the mud scraping component can also be driven to move and avoid in a timely manner to avoid damage to parts caused by hard contact. Through the mutual cooperation among the various structures of the device, the service strength and service performance of the double swing arm linkage suspension can be improved.

[0027] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present 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 full 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 technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

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

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

[0032] Figure 3 Schematic diagram of the partial structure provided by the embodiment of the present invention;

[0033] Figure 4 Schematic diagram of the structural connection of the first buffer component, the second buffer component and the sludge scraping component provided by the embodiment of the present invention;

[0034] Figure 5 Cross-sectional side view of the water spraying mechanism provided by the embodiment of the present invention;

[0035] Figure 6 Cross-sectional top view of the water spraying mechanism provided by the embodiment of the present invention;

[0036] Figure 7 is Figure 3 Enlarged view of part A in;

[0037] Figure 8 is Figure 3 Enlarged view of part B in;

[0038] Figure 9 is Figure 4 Enlarged view of part C in;

[0039] Figure 10 is Figure 6 Enlarged view of part D in.

[0040] Description of the 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 spray tank; 53. Piston plate 1; 54. Push rod; 55. Water spray pipe; 56. Water spray 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] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying 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 Figures 1 - 10 The present embodiment provides a high-strength double-swing arm linkage suspension system, including a vehicle frame and a main suspension beam 1 welded to the vehicle frame, two upper suspension arms 11 and two lower suspension arms 12 are provided on both sides of the main suspension beam 1, a connecting seat 13 is provided between the upper suspension arm 11 and the lower suspension arm 12 on the same side, and a wheel axle 14 is provided on each of the two connecting seats 13, the vehicle frame, the main suspension beam 1, the upper suspension arm 11, the lower suspension arm 12, the connecting seat 13 and the wheel axle 14 are all existing parts, and the coordination and installation between the various parts are also existing mature technologies, which will not be described in detail here, and further includes two groups of buffer one components, which are provided on the corresponding lower suspension arms 12; two groups of buffer two components and a mud scraper component, which are all provided on the vehicle frame; when the bump amplitude When the bump is small, the buffer component 1 works to achieve buffering. When the vehicle bumps slightly, the contraction pressure of the buffer component 1 is within an appropriate range, so the buffer component 1 alone can achieve a better buffering effect; when the bump amplitude is large, the movement of the buffer component 1 triggers the buffer component 2 to work to decompose and protect its buffering force. At this time, the buffering force generated by the bump increases instantly or exceeds the buffering range of the buffer component 1. The setting of the buffer component 2 can effectively grade its larger buffering 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 achieve cleaning. 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 a further embodiment provided by the present invention, a buffer component includes a first connecting head 21 disposed on the lower swing arm 12, and a first horizontal plate 22 is fixedly connected to the connecting head; a damper 23 is fixedly connected to the first horizontal plate 22, and the damper 23 is connected to the vehicle frame through a second connecting head 24. A first buffer spring 25 is disposed between the second connecting head 24 and the first horizontal plate 22. The elastic force of the first buffer spring 25 drives the first horizontal plate 22 away from the second connecting head 24. The damper 23 is an existing device, and the function of the damper 23 is to provide resistance to motion and consume motion energy, so as to achieve the effect of shock absorption and energy dissipation. The first buffer spring 25 is sleeved outside the damper 23. The first buffer spring 25 can play a role in connection and support, ensuring that the damper 23 can stably bear various forces and weights during operation, and at the same time playing a role in buffering and stabilizing, so that the damper 23 can adapt to different loads and vibration environments.

[0045] Further, a second buffer component includes a vertical rod 31 disposed on the vehicle 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. The elastic force of the second buffer spring 34 drives the bottom plate 33 away from the vehicle 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 first horizontal plate 22 disposed on the damper 23 moves and drives the bottom plate 33 connected to the bottom of the second buffer spring 34 to move synchronously. At this time, the second buffer spring 34 deforms to buffer and decompose the force received by the damper 23.

[0046] Furthermore, a sludge scraping component is slidably connected to a connecting rod 41 on the vehicle frame. The connecting rod 41 slides at the bottom of the vehicle frame so that when the wheel rotates, the connecting rod 41 can slide and adjust correspondingly. The bottom end of the connecting rod 41 is fixedly connected to a base 42, and a limiting plate 43 is slidably connected to the bottom of the base 42. A scraping plate 44 is slidably connected to the limiting plate 43. The scraping plate 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. A water spraying mechanism is further disposed on the connecting seat 13. During the movement stroke of the limiting plate 43, the water spraying mechanism is triggered to work to spray water on the wheel axle 14 for cleaning. By providing 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 a further embodiment provided by the present invention, the water spraying mechanism includes a water storage cylinder 51 and a water spraying tank 52 fixedly connected to the connecting seat 13. A first piston plate 53 is slidably connected in the water spraying tank 52; the first piston plate 53 is fixedly connected to the limiting plate 43 through a push rod 54. A water spraying pipe 55 is communicated with the water spraying tank 52, and one end of the water spraying pipe 55 is communicated with a water spraying head 56. The water spraying tank 52 is communicated with the water storage cylinder 51 through a one-way pipe 57.

[0048] In the embodiment provided by the present invention, an anti-slosh component is arranged in the water storage cylinder 51. The limiting plate 43 triggers the movement of the anti-slosh component through a trigger component. By arranging the anti-slosh component, the liquid inside the water storage cylinder 51 can be protected, preventing the liquid from sloshing and accumulating in the water storage cylinder 51 due to vehicle bumps, which affects the stability of the vehicle.

[0049] Specifically, the anti-slosh component includes 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. A guiding unit for restricting the movement of the second piston plate 61 is also arranged in the water storage cylinder 51. By arranging the guiding component, the second piston plate 61 can be restricted from moving vertically in the water storage cylinder 51 without rotating. Also, because the threaded rod 62 is fixedly connected to the second piston plate 61, the rotation of the threaded rod 62 can be restricted.

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

[0051] In a further solution provided by the present invention, the trigger component includes a ratchet ring 81 rotatably connected to the water storage cylinder 51. The threaded rod 62 is threadedly connected to the ratchet ring 81. A gear ring 82 is connected to the ratchet ring 81 through a limiting unit. A toothed plate 83 is fixedly connected to the limiting plate 43. The toothed plate 83 meshes with the gear ring 82 during the movement stroke. A thread adapted to the threaded rod 62 is arranged on the inner ring of the ratchet ring 81, so that the threaded rod 62 can move vertically under the restriction of the guiding unit and under the rotation of the ratchet ring 81.

[0052] In a further solution provided by the present invention, the limiting unit includes 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. The elastic force of the connecting spring 92 drives the ratchet block 91 to mesh with the ratchet ring 81. By arranging the cooperation of the limiting unit, when the toothed plate 83 of the limiting plate 43 is reset, the ratchet ring 81 can be driven to rotate through the gear ring 82, 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, the second piston plate 61 in the water spraying tank 52 will also be reset. At this time, a negative pressure is generated in the water spraying tank 52 and the water in the water storage cylinder 51 is sucked into the water spraying tank 52 for storage.

[0053] Working principle: During operation, when the vehicle passes through a bumpy section, the wheels will move vertically. At this time, the damper 23 and the first buffer spring 25 arranged between the first connector 21 and the second connector 24 will contract to relieve the bumping force received. When the bumpy road surface becomes more and more severe, the contraction amount of the damper 23 will increase. When its contraction amount is about to reach the critical value, the first cross plate 22 arranged on the damper 23 will contact the bottom plate 33 of the second buffer spring 34 and push the bottom plate 33 to move upward synchronously. The upward movement of the bottom plate 33 compresses the second buffer spring 34. At this time, the second buffer spring 34 can decompose the force received by the damper 23 to prevent it from contracting violently and colliding. At this time, the second buffer spring 34 cooperates with the first buffer component to move synchronously to achieve buffering;

[0054] When the vehicle is driving, a large amount of pollutants will adhere to the axle 14. After the vehicle travels, the rotation of the axle 14 will contact the scraping plate 44. The scraping plate 44 can clean the adhered pollutants. When the pollutants are relatively hard, at this time, the scraping plate 44 will be resisted and move away from the axle 14. When the scraping plate 44 moves, it drives the limiting plate 43 to move and pushes the connecting plate 45 to move upward through the rotating bar 46. The upward movement of the connecting plate 45 contacts the bottom plate 33 and compresses the second buffer spring 34 through the bottom plate 33. At the same time, when the limiting plate 43 moves, it will also push the piston plate 53 in the water spraying tank 52 to move through the pushing plate to squeeze the liquid stored inside it and spray water on the axle 14, facilitating the condensation of pollutants to get damp, facilitating the scraping plate 44 to reset under the action of the second buffer spring 34 and clean the damp pollutants. The movement of the limiting plate 43 will also drive the toothed plate 83 to move. The movement of the toothed plate 83 will engage 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 inclined tooth direction of the ratchet block 91. Therefore, the rotation of the gear ring 82 will push the ratchet block 91 to move and compress the connecting spring 92 until the water spraying is completed. At this time, the second buffer spring 34 pushes the bottom plate 33 to reset. The reset of the bottom plate 33 squeezes the connecting plate 45 so that the moving limiting plate 43 drives the moving scraping plate 44 to reset under the action of the rotating bar 46. The limiting plate 43 drives the push rod 54 and the toothed plate 83 to reset synchronously. The reset of the push rod 54 drives the piston plate 53 to move, so that a negative pressure is generated in the water spraying tank 52, and the water in the water storage cylinder 51 can be sucked into the water spraying tank 52 through the one-way pipe 57 for use. When the toothed plate 83 resets and engages, the gear ring 82 rotates in the reverse direction. At this time, the rotation direction of the gear ring 82 contacts the flat side of the ratchet block 91. The rotation of the gear ring 82 drives the ratchet ring 81 to rotate through the clamping 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 61 to move in the water storage cylinder 51 so that the piston plate 61 remains in contact with the liquid level to prevent the liquid level from shaking and storing energy and affecting the driving of the vehicle.

[0055] Only some exemplary embodiments of the present invention have been described by way of illustration. Undoubtedly, those of ordinary skill in the art can modify the described embodiments in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description 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. On both sides of the main suspension beam arm (1), there are two upper swing arms (11) and two lower swing arms (12). A connecting seat (13) is arranged between the upper swing arm (11) and the lower swing arm (12) on the same side. Wheel axles (14) are arranged on both of the connecting seats (13). It is characterized in that: It further includes two groups of first buffer components, which are arranged on the corresponding lower swing arms (12); It further includes two groups of second buffer components and a mud scraping component, which are both arranged on the vehicle frame; When the bump amplitude is small, the first buffer component works to achieve buffering; When the bump amplitude is large, the first buffer component moves to trigger the second buffer component to work for buffering force decomposition protection; When the mud scraping component cleans the wheel axle (14), the second buffer component cooperates with the movement of the mud scraping component to achieve cleaning; The first buffer component includes a first connecting head (21) arranged on the lower swing arm (12), and a first horizontal plate (22) is fixedly connected to the connecting head; A damper (23) is fixedly connected to the first horizontal plate (22). The damper (23) is connected to the vehicle frame through a second connecting head (24). A first buffer spring (25) is arranged between the second connecting head (24) and the first horizontal plate (22). The elastic force of the first buffer spring (25) drives the first horizontal plate (22) away from the second connecting head (24); The second buffer component includes a vertical rod (31) arranged on the vehicle 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). A second buffer spring (34) is fixedly connected between the bottom plate (33) and the top plate (32). The elastic force of the second buffer spring (34) drives the bottom plate (33) away from the vehicle frame; The mud scraping component 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). A limiting plate (43) is slidably connected to the bottom of the base (42). 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). A water spraying mechanism is further arranged on the connecting seat (13). During the movement stroke of the limiting plate (43), the water spraying mechanism is triggered to work to spray water on the wheel axle (14) for cleaning; The water spraying mechanism includes a water storage cylinder (51) and a water spraying tank (52) fixedly connected to the connecting seat (13). A first piston plate (53) is slidably connected in the water spraying tank (52); The first piston plate (53) is fixedly connected to the limiting plate (43) through a push rod (54). A water spraying pipe (55) is communicated with the water spraying tank (52). One end of the water spraying pipe (55) is communicated with a water spraying head (56). The water spraying tank (52) is communicated with the water storage cylinder (51) through a one-way pipe (57).

2. The high-strength double swing arm linkage suspension system according to claim 1, wherein An anti-slosh component is arranged in the water storage cylinder (51). The limiting plate (43) triggers the anti-slosh component to move through a triggering component.

3. The high-strength double swing arm linkage suspension system according to claim 2, characterized in that, The anti-shake component includes 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); A guiding unit for restricting the movement of the second piston plate (61) is further provided in the water storage cylinder (51).

4. The high-strength double swing arm linkage suspension system according to claim 3, characterized in that, The guiding unit includes 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).

5. A high-strength double swing arm linkage suspension system according to claim 3, characterized in that, The triggering component 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); A gear ring (82) is connected to the ratchet ring (81) through a limiting unit, a toothed plate (83) is fixedly connected to the limiting plate (43), and the toothed plate (83) meshes with the gear ring (82) during the movement stroke.

6. The high-strength double swing arm linkage suspension system according to claim 5, characterized in that, The limiting unit includes 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).

Images