Rear suspension assembly of snowmobile

Abstract

The utility model discloses a rear suspension assembly of a snowmobile, and belongs to the technical field of snowmobile accessories. The front cradle and the rear cradle are both arranged on the upper side of the body and arranged at intervals from front to back, connecting parts used for being connected with the snowfield motorcycle are arranged at the two ends of the front cradle and the two ends of the rear cradle, one end of the front shock absorber is rotatably connected with the front cradle, the other end of the front shock absorber is rotatably connected with the body, and one end of the rear shock absorber is rotatably connected with the rear cradle. The other end of the rear cradle is connected with the body through a middle torque arm assembly, a rear torque arm assembly is arranged between the rear cradle and the body, and the hardness adjusting device is arranged between the middle torque arm assembly and the rear torque arm assembly. The hardness adjusting device of the rear suspension assembly of the snowmobile can adjust the hardness of the rear shock absorber, and not only can meet the requirement for loading, but also can meet the requirement for comfort during light load.

Description

Technical Field

[0001] The invention discloses a snowmobile rear suspension assembly, belonging to the technical field of snowmobile accessories. Background Art

[0002] Snowmobiles can travel on snow and do not require specific roads. The power source of snowmobiles is an internal combustion engine, which drives the tracks through the gearbox and then drives the snowmobile. This type of vehicle is widely used in winter sports, snow rescue, forestry and snow patrol.

[0003] The rear track of the snowmobile is installed on the rear suspension assembly, and a shock absorber is arranged between the rear suspension and the snowmobile to improve the riding comfort. After the existing snowmobile is produced, the rear suspension cannot be adjusted to be soft or hard, which results in that the rear suspension cannot be adjusted according to the actual situation when the snowmobile is lightly loaded or heavily loaded, and cannot meet the needs of carrying people and cargo at the same time. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art and to provide a snowmobile rear suspension assembly capable of adjusting the softness and hardness of a shock absorber according to needs to adapt to different load requirements.

[0005] The technical solution adopted by the utility model to solve its technical problems is: the snowmobile rear suspension assembly comprises a main body and a front shock absorber, a rear shock absorber, a track tensioning assembly, a front cradle, a rear cradle and a hardness adjustment device installed on the main body, the front cradle and the rear cradle are both arranged on the upper side of the main body and are arranged at intervals from front to rear, both ends of the front cradle and the rear cradle are provided with connecting parts for connecting with the snowmobile, one end of the front shock absorber is rotatably connected to the front cradle, and the other end is rotatably connected to the main body, one end of the rear shock absorber is rotatably connected to the rear cradle, and the other end is connected to the main body through an intermediate torque arm assembly, a rear torque arm assembly is arranged between the rear cradle and the main body, the hardness adjustment device is arranged between the intermediate torque arm assembly and the rear torque arm assembly, and the track tensioning assembly is installed on the main body.

[0006] Preferably, the hardness adjustment device comprises a stiffness adjustment rod, one end of which is detachably connected to the middle torque arm assembly, and the other end of which is rotatably connected to the rear torque arm assembly.

[0007] Preferably, an adjustment plate is provided on the intermediate torque arm assembly, one end of the adjustment plate is rotatably connected to the intermediate torque arm assembly, and the other end is connected to a corresponding end of the rear shock absorber, and the stiffness adjustment rod is detachably connected to the adjustment plate.

[0008] Preferably, a plurality of engaging holes are arranged at intervals along the length direction on the adjustment plate, and a bayonet is arranged on the stiffness adjustment rod, and the bayonet can be detachably engaged in the corresponding bayonet hole.

[0009] Preferably, it also includes a rear cradle lower swing arm, a rear limit rod and a baffle, the rear cradle lower swing arms are rotatably installed at both ends of the rear torque arm assembly, each rear cradle lower swing arm is rotatably connected to the main body, the rear limit rod is located between the two rear cradle lower swing arms and fixedly connected thereto, the rear limit rod is arranged lower than the rear torque arm assembly, one end of the baffle is fixedly connected to the rear torque arm assembly, and the other end is supported on the rear limit rod.

[0010] Preferably, the track tensioning assembly includes a tensioning shaft, a tensioning wheel, a tensioning seat and a tensioning screw. Tensioning wheels are rotatably installed on both ends of the tensioning shaft, and tensioning seats are slidably installed on both sides of the main body. The two ends of the tensioning shaft are rotatably connected to the two tensioning seats respectively, the tensioning screw is threadedly connected to the main body, the tensioning screw corresponds to the tensioning seat one by one, and pushes the corresponding tensioning seat to move in a direction away from the middle of the main body.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The front shock absorber and the rear shock absorber of the snowmobile rear suspension assembly are used for shock absorption of the snowmobile, and the hardness adjustment device can adjust the hardness of the rear shock absorber. When a heavy load such as loading cargo occurs, the rear shock absorber can be adjusted to be hard to increase the load-bearing capacity, and when carrying people, the rear shock absorber can be adjusted to be soft to improve comfort. The hardness of the rear shock absorber can be adjusted according to needs, which can meet both the load demand and the comfort demand when lightly loaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective schematic diagram of a snowmobile rear suspension assembly from a first perspective;

[0014] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0015] Figure 3 for Figure 1 A partial enlarged view of point B in the middle;

[0016] Figure 4 is a three-dimensional schematic diagram of another perspective of the rear suspension assembly of the snowmobile;

[0017] Figure 5 for Figure 4 A partial enlarged view of point C in the middle.

[0018] In the figure: 1. main body; 2. rear cradle; 3. front cradle; 4. outer road wheel; 5. road wheel mounting seat; 6. outer tension wheel; 7. inner tension wheel; 8. tensioning shaft; 9. rear torque arm assembly; 10. rear cradle lower arm; 11. rear shock absorber; 12. upper support wheel; 13. stiffness adjustment rod; 14. inner road wheel; 15. front shock absorber; 16. front torque arm assembly; 17. front support wheel; 18. front cradle limiting belt; 19. rear limiting rod; 20. baffle; 21. intermediate torque arm assembly; 22. mounting rod; 23. front support shaft; 24. mounting seat; 25. tensioning seat; 26. tensioning screw. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0020] Figures 1 to 5 It is the best embodiment of the utility model, and the following Figures 1 to 5 The utility model is further described.

[0021] A snowmobile rear suspension assembly includes a main body and a front shock absorber 15, a rear shock absorber 11, a track tensioning assembly, a front cradle 3, a rear cradle 2 and a hardness adjustment device installed on the main body. The front cradle 3 and the rear cradle 2 are both arranged on the upper side of the main body 1 and are arranged at intervals from front to rear. Both ends of the front cradle 3 and the rear cradle 2 are provided with connecting parts for connecting to the snowmobile. One end of the front shock absorber 15 is rotatably connected to the front cradle 3, and the other end is rotatably connected to the main body 1. One end of the rear shock absorber 11 is rotatably connected to the rear cradle 2, and the other end is connected to the main body 1 through an intermediate torque arm assembly 21. A rear torque arm assembly 9 is arranged between the rear cradle 2 and the main body 1. The hardness adjustment device is arranged between the intermediate torque arm assembly 21 and the rear torque arm assembly 9. The track tensioning assembly is installed on the main body 1. The front shock absorber 15 and the rear shock absorber 11 of the rear suspension assembly of the snowmobile are used for shock absorption of the snowmobile. The hardness adjustment device can adjust the hardness of the rear shock absorber 11. When a heavy load such as loading cargo occurs, the rear shock absorber 11 can be adjusted to be hard to increase the carrying capacity. When carrying people, the rear shock absorber 11 can be adjusted to be soft. The hardness of the rear shock absorber 11 can be adjusted according to needs, which can meet both the load requirement and the comfort requirement when lightly loaded.

[0022] Specifically, Figure 1-5 As shown: In this embodiment, the front side of the main body 1 is the side facing the snowmobile, and the rear side is the side facing away from the snowmobile.

[0023] The outer road wheels 4 and the inner road wheels 14 are installed on both sides of the main body 1. The outer road wheels 4 and the inner road wheels 14 are arranged in pairs. Each pair of outer road wheels 4 is arranged on both sides of the main body 1, and the outer road wheels 4 are located on the outside of the main body 1. Each pair of inner road wheels 14 is also arranged on both sides of the main body 1, and the inner road wheels 14 are located on the inside of the main body 1. In this embodiment, there is only one pair of inner road wheels 14, and three pairs of outer road wheels 4 are arranged side by side and at intervals along the main body 1. The outer road wheels 4 and the inner road wheels 14 are used to support the bottom of the crawler track and bear the weight of the snowmobile. The outer road wheels 4 and the inner road wheels 14 are rotatably mounted on the main body 1 through the road wheel mounting seat 5.

[0024] A front support wheel 17 and a front support shaft 23 are installed on the front side of the main body 1. The front support shaft 23 is rotatably installed on the main body 1. The front support wheels 17 are rotatably installed at both ends of the front support shaft 23. The front support wheels 17 are arranged higher than the outer road wheels 4. The front support wheels 17 are mainly used to support the front side of the track to ensure that the track is taut.

[0025] The track tensioning assembly includes a tensioning shaft 8, a tensioning wheel, a tensioning seat 25 and a tensioning screw 26, wherein the tensioning wheel includes an outer tensioning wheel 6 and an inner tensioning wheel 7. Long holes are provided on both sides of the main body 1, and a tensioning seat 25 is slidably installed in each long hole. The two ends of the tensioning shaft 8 are rotatably installed on the corresponding side 25, and the two ends of the tensioning shaft 8 are rotatably installed with an outer tensioning wheel 6 and an inner tensioning wheel 7, respectively, and the outer tensioning wheel 6 and the inner tensioning wheel 7 are located on both sides of the tensioning seat 25 on the corresponding side. Mounting seats 24 are detachably installed on both sides of the main body 1, and tensioning screws 26 are threadedly connected to each mounting seat 24. The ends of the tensioning screws 26 are supported on the corresponding side adjustment seats 25, and push the adjustment seats 25 to move in a direction away from the middle of the main body 1 to achieve tensioning of the track.

[0026] An intermediate torque arm assembly 21 is installed in the middle part of the main body 1, and a rear torque arm assembly 9 is installed at the rear part of the main body 1. Both ends of the rear torque arm assembly 9 are connected to the main body 1 through a rear cradle lower swing arm 10. The rear torque arm assembly 9 is located on the upper side of the main body 1. Both ends of the rear torque arm assembly 9 are rotatably connected to the upper end of the rear cradle lower swing arm 10 on the corresponding side, and the lower end of the rear cradle lower swing arm 10 is rotatably connected to the corresponding side of the main body 1. A rear limit rod 19 is arranged between the two rear cradle lower swing arms 10. The rear limit rod 19 is located on the lower side of the rear torque arm assembly 9, and both ends of the rear limit rod 19 are rotatably connected to the middle part of the rear cradle lower swing arm 10 on the corresponding side.

[0027] The rear cradle 2 is disposed between the rear torque arm assembly 9 and the intermediate torque arm assembly 21, and is higher than the rear torque arm assembly 9 and the intermediate torque arm assembly 21. The front side of the rear torque arm assembly 9 is fixedly connected to the rear cradle 2, and the rear shock absorber 11 is located between the rear cradle 2 and the intermediate torque arm assembly 21, and the rear shock absorber 11 is gradually inclined downward in the direction close to the intermediate torque arm assembly 21. In this embodiment, two rear shock absorbers 11 are arranged side by side and at intervals.

[0028] An adjustment plate is fixedly installed in the middle of the intermediate torque arm assembly 21. The adjustment plate is arranged at the lower side of the intermediate torque arm assembly 21. The adjustment plate is gradually inclined downward in the direction close to the rear shock absorber 11. The adjustment plates are arranged in pairs, and the number of pairs of adjustment plates corresponds to the rear shock absorber 11 one by one. The corresponding end of the rear shock absorber 11 extends between the two paired adjustment plates and is rotatably connected to the two adjustment plates.

[0029] A baffle 20 is installed at the rear of the rear torque arm assembly 9, and two baffles 20 are arranged side by side and at intervals, and the lower end of the baffle 20 is supported on the side of the rear limit rod 19 away from the rear shock absorber 11. The baffle 20 cooperates with the rear limit rod 19 to limit the rear shock absorber 11.

[0030] Upper support wheels 12 are rotatably installed at both ends of the rear cradle 2, and the upper support wheels 12 can support the top of the crawler track. Both ends of the rear cradle 2 are provided with a connecting portion for connecting with the snowmobile body.

[0031] The hardness adjustment device includes a stiffness adjustment rod 13, which is arranged between the two rear shock absorbers 11. The stiffness adjustment rod 13 is also gradually inclined downward in the direction close to the middle torque arm assembly 21. One end of the stiffness adjustment rod 13 extends between the two groups of adjustment plates and is detachably connected to the two groups of adjustment plates. The other end is rotatably connected to the rear torque arm assembly 9, and the other end of the stiffness adjustment rod 13 is arranged lower than the rear shock absorber 11.

[0032] When the position of the stiffness adjustment rod 13 on the adjustment plate is adjusted, the hardness and softness of the rear shock absorber 11 can be adjusted, and the adjustment is convenient.

[0033] The adjustment plates on both sides are provided with a plurality of engaging holes at intervals along the length direction, and engaging pins are provided on both sides of the corresponding end of the stiffness adjustment rod 13. After the hardness of the rear shock absorber 11 is adjusted, the engaging pins on both sides of the stiffness adjustment rod 13 are respectively extended into the engaging holes facing each other on both sides, and the stiffness adjustment rod 13 can be installed. In order to prevent the engaging pin from being freely separated from the adjustment plate, a nut can be installed on the engaging pin.

[0034] A front torque arm assembly 16 is rotatably installed on the front side of the main body 1. The front cradle 3 is located in front of the front torque arm assembly 16. The front cradle 3 is arranged higher than the main body 1. The front torque arm assembly 16 is fixedly connected to the front cradle 3. Both ends of the front cradle 3 are provided with connecting parts for connecting to the snowmobile main body.

[0035] A mounting rod 22 is installed on the main body 1 at the lower side of the front torque arm assembly 16, and the front shock absorber 15 is arranged on the front side of the front torque arm assembly 16. The front shock absorber 15 is gradually inclined upward away from the front torque arm assembly 16. One end of the front shock absorber 15 is rotatably connected to the mounting rod 22, and the other end is rotatably connected to the front cradle 3.

[0036] A front cradle limiting strap 18 is provided between the front cradle 3 and the front supporting shaft 23 , one end of the front cradle limiting strap 18 is rotatably connected to the front cradle 3 , and the other end is rotatably connected to the front supporting shaft 23 to limit the front cradle 3 .

[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A snowmobile rear suspension assembly, characterized in that: The invention comprises a main body, a front shock absorber (15), a rear shock absorber (11), a track tensioning assembly, a front cradle (3), a rear cradle (2) and a hardness adjustment device installed on the main body. The front cradle (3) and the rear cradle (2) are both arranged on the upper side of the main body (1) and are arranged at intervals from front to rear. Both ends of the front cradle (3) and the rear cradle (2) are provided with connecting parts for connecting with a snowmobile. One end of the front shock absorber (15) is rotatably connected to the front cradle (3) and the other end is rotatably connected to the main body (1). One end of the rear shock absorber (11) is rotatably connected to the rear cradle (2) and the other end is connected to the main body (1) through an intermediate torque arm assembly (21). A rear torque arm assembly (9) is arranged between the rear cradle (2) and the main body (1). The hardness adjustment device is arranged between the intermediate torque arm assembly (21) and the rear torque arm assembly (9). The track tensioning assembly is installed on the main body (1).

2. The snowmobile rear suspension assembly according to claim 1, characterized in that: The hardness adjustment device comprises a stiffness adjustment rod (13), one end of which is detachably connected to the middle torque arm assembly (21), and the other end of which is rotatably connected to the rear torque arm assembly (9).

3. The snowmobile rear suspension assembly according to claim 2, characterized in that: The intermediate torque arm assembly (21) is provided with an adjustment plate, one end of the adjustment plate is rotatably connected to the intermediate torque arm assembly (21), and the other end is connected to a corresponding end of the rear shock absorber (11), and the stiffness adjustment rod (13) is detachably connected to the adjustment plate.

4. The snowmobile rear suspension assembly according to claim 3, characterized in that: The adjustment plate is provided with a plurality of engaging holes at intervals along the length direction, and a locking pin is provided on the stiffness adjustment pull rod (13), and the locking pin can be detachably engaged in the corresponding engaging hole.

5. The snowmobile rear suspension assembly according to claim 1 or 2, characterized in that: The invention also comprises a rear cradle lower swing arm (10), a rear limit rod (19) and a baffle (20); the rear cradle lower swing arms (10) are rotatably mounted at both ends of the rear torque arm assembly (9); each rear cradle lower swing arm (10) is rotatably connected to the main body (1); the rear limit rod (19) is located between the two rear cradle lower swing arms (10) and is fixedly connected thereto; the rear limit rod (19) is arranged below the rear torque arm assembly (9); one end of the baffle (20) is fixedly connected to the rear torque arm assembly (9), and the other end is supported on the rear limit rod (19).

6. The snowmobile rear suspension assembly according to claim 1, characterized in that: The track tensioning assembly comprises a tensioning shaft (8), a tensioning wheel, a tensioning seat (25) and a tensioning screw (26). Tensioning wheels are rotatably installed at both ends of the tensioning shaft (8), and tensioning seats (25) are slidably installed on both sides of the main body (1). The two ends of the tensioning shaft (8) are rotatably connected to the two tensioning seats (25), respectively. The tensioning screw (26) is threadedly connected to the main body (1). The tensioning screw (26) corresponds to the tensioning seat (25) one by one, and pushes the corresponding tensioning seat (25) to move in a direction away from the middle of the main body (1).

Images