A rear wheel suspension for a road roller

Abstract

This invention relates to the field of suspension device technology, specifically a rear wheel suspension device for a road roller, comprising a first buffer mechanism, a second buffer mechanism, a pressing mechanism, a bending mechanism, and a deceleration mechanism. The first buffer mechanism has a second buffer mechanism at one end, the second buffer mechanism has a pressing mechanism at one end, the pressing mechanism has a bending mechanism at one end, and the bending mechanism has a deceleration mechanism at one end. This structure allows the tracks to move downwards and conform to the road surface when the telescopic block moves downwards. The tracks' contact with the road surface increases the contact area between the road roller and the road surface. The use of arc-shaped blocks allows the wheels to decelerate when encountering large bumps, as the arc-shaped blocks contact the friction disc. This allows the wheels to pass over bumpy surfaces slowly, preventing excessive speed and severe vibration of the road roller, thus effectively protecting the road roller from vibration damage.

Description

Technical Field

[0001] This invention relates to the field of suspension device technology, specifically to a rear wheel suspension device for a road roller. Background Technology

[0002] Suspension is the collective term for all force-transmitting connections between a car's frame and axles or wheels. The main function of suspension is to transmit all forces and torques acting between the wheels and the car body, such as supporting force, braking force, and driving force. When a car travels on uneven surfaces, the suspension system absorbs impacts from the road surface, providing a smooth driving experience, supporting and stabilizing the vehicle body. The suspension system supports the weight of the wheels and maintains vehicle stability when the wheels bounce, making driving safer and more comfortable. It maintains good wheel-to-road contact, ensuring that the driving and braking forces generated between the wheels and the road surface are effectively transmitted to the vehicle body, thereby improving the car's driving and handling performance. The suspension of a road roller is the supporting part between the chassis and the wheels, generally consisting of four wheels, tracks, or half-tracks. The chassis provides stable support for the entire machine while it is moving, and can also change the road roller's direction of travel or steering angle through the steering mechanism. The chassis also bears the entire weight of the road roller, effectively distributing the pressure on the road surface during operation and ensuring work quality.

[0003] Road rollers are highly effective at reinforcing the ground, offering fast working speeds and high reinforcement quality. The suspension system transmits forces and torques between the wheels and the frame, buffering the impact of uneven road surfaces onto the vehicle body and ensuring stable driving. However, existing road roller suspension systems are complex, costly, and difficult to maintain. When driving on bumpy roads, the suspension system can cause discomfort to the driver and passengers due to the impact load transmitted from the uneven road surface and the resulting vibration. Therefore, it is necessary to reduce the dynamic load on the road roller and the vehicle itself when driving on bumpy roads. Especially when the road roller is driving on highly bumpy roads, the driver needs to actively slow down to ensure a slow and controlled passage over bumpy areas. Driving at normal speed without slowing down over highly bumpy roads will cause severe vibrations to the vehicle body, potentially damaging the road roller and the driver and passengers. Therefore, this invention designs a rear wheel suspension system for a road roller to solve the above problems. Summary of the Invention

[0004] To address the problems in the prior art, the present invention provides a rear wheel suspension device for a road roller.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a rear wheel suspension device for a road roller, comprising a first buffer mechanism, a second buffer mechanism, a pressing mechanism, a bending mechanism, and a deceleration mechanism, wherein the first buffer mechanism is provided with a second buffer mechanism at one end, the second buffer mechanism is provided with a pressing mechanism at one end, the pressing mechanism is provided with a bending mechanism at one end, and the bending mechanism is provided with a deceleration mechanism at one end.

[0006] Preferably, the first buffer mechanism includes a chassis, a first sliding rod is fixedly connected to the lower end of the chassis, a first sleeve is sleeved on the outside of the first sliding rod, a first baffle is fixedly connected to the side wall of the first sleeve, a first spring is fixedly connected to the upper end of the first baffle, the upper end of the first spring is fixedly connected to the chassis, and a support base is fixedly connected to the lower end of the first sleeve.

[0007] Preferably, the first buffer mechanism further includes a first drive shaft, which is rotatably connected inside the support base. A friction disc is fixedly connected to the side wall of the first drive shaft. A universal joint is fixedly connected to one end of the first drive shaft. A second drive shaft is fixedly connected to one end of the universal joint. A tire is fixedly connected to one end of the second drive shaft.

[0008] Preferably, the second buffer mechanism includes a support block, the upper end of which is fixedly connected to the chassis, a first rotating shaft is rotatably connected to the side wall of the support block, a second sleeve is fixedly connected to one end of the first rotating shaft, a second baffle is slidably connected to the inner side wall of the second sleeve, a second sliding rod is fixedly connected to one end of the second baffle, a second spring is fixedly connected to one end of the second baffle, one end of the second spring is fixedly connected to the second sleeve, and a connecting plate is fixedly connected to one end of the second sliding rod.

[0009] Preferably, the second buffer mechanism further includes a rotating pin, one end of the connecting plate is rotatably connected to the rotating pin, a first connecting block is fixedly connected to the side wall of the rotating pin, one end of the first connecting block is fixedly connected to a telescopic block, the side wall of the telescopic block is fixedly connected to a second connecting block, one end of the second connecting block is fixedly connected to a bearing, the inner side wall of the bearing is fixedly connected to a second transmission shaft, the side wall of the telescopic block is slidably connected to a telescopic cylinder, one end of the telescopic block is fixedly connected to a third baffle, the lower end of the third baffle is fixedly connected to a third spring, and the lower end of the third spring is fixedly connected to the telescopic cylinder.

[0010] Preferably, the pressing mechanism includes a third connecting block, the lower end of which is fixedly connected to the telescopic block, and a fixed body is fixedly connected to one end of the third connecting block. A second rotating shaft is rotatably connected to the side wall of the fixed body.

[0011] Preferably, the pressing mechanism further includes a first sprocket, and the second shaft sidewall is fixedly connected to the first sprocket, with one end of the first sprocket meshing with a track.

[0012] Preferably, the bending mechanism includes a third rotating shaft, one end of which is rotatably connected to a fixed body, a movable plate is rotatably connected to the side wall of the third rotating shaft, and a fourth rotating shaft is rotatably connected to the side wall of one end of the movable plate.

[0013] Preferably, the bending mechanism further includes a second sprocket, the second sprocket is rotatably connected to the side wall of the fourth rotating shaft, a torsion spring is fixedly connected to the inner side wall of the fixed body, the torsion spring is sleeved on the outside of the third rotating shaft, and one end of the torsion spring is fixedly connected to the movable plate.

[0014] Preferably, the deceleration mechanism includes a third sleeve, the upper end of which is fixedly connected to the chassis, a third sliding rod is slidably connected inside the third sleeve, and a fourth baffle is fixedly connected to one end of the third sliding rod.

[0015] Preferably, the deceleration mechanism further includes a fourth spring, the upper end of the fourth baffle is fixedly connected to the fourth spring, the upper end of the fourth spring is fixedly connected to the third sleeve, and the lower end of the third sliding rod is fixedly connected to an arc-shaped block.

[0016] The beneficial effects of this invention are:

[0017] (1) The rear wheel suspension device of the road roller described in this invention uses a first spring to provide initial buffering and shock absorption between the chassis and the wheel, and to mitigate the impact load transmitted to the vehicle body from the uneven road surface, attenuate the vibration caused therefrom, ensure the comfort of the driver and passengers, and reduce the dynamic load of the vehicle itself. Through the structure, when the wheel moves upward, the telescopic block moves downward and compresses the third spring. The wheel and the telescopic block move relative to each other, which can further buffer and dampen the road roller. At the same time, it can also drive the second baffle to compress the second spring. The compression of the second spring by the second baffle buffers the force between the second drive shaft and the first drive shaft.

[0018] (2) The rear wheel suspension device of the road roller described in this invention, through the structure set, when the telescopic block moves downward, it will drive the track to move downward and fit against the road surface. The track moving downward and fitting against the road surface can play a certain supporting role. At the same time, the track will also rotate with the movement of the road roller under the action of friction. The track fitting against the road surface can increase the contact area between the road roller and the road surface, thereby improving the stability of the road roller and transmitting the vibration energy to the ground. The set movable plate can play the role of adjusting the angle. When the front end of the track encounters a raised section of the road, it will drive the movable plate to bend inward. The inward bending of the movable plate will compress the torsion spring. The inward bending of the movable plate will drive the fourth sprocket to move inward. The inward movement of the fourth sprocket will drive the second sprocket to move inward. The inward movement of the second sprocket can adjust the tilt angle of the track to adapt to the raised section. At the same time, when the movable plate bends inward and compresses the torsion spring, it will further reduce vibration and improve the stability of the road roller.

[0019] (3) The rear wheel suspension device of the road roller described in this invention can slow down the wheel when the arc block is in contact with the friction disc when the road roller encounters a large bump, so that the wheel passes through the bumpy road surface slowly, avoiding excessive speed and causing the road roller to vibrate violently, thus protecting the road roller from vibration damage. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the connection structure between the first sleeve and the support base;

[0023] Figure 3 This is a schematic diagram of the connection structure between the universal joint and the second drive shaft.

[0024] Figure 4 This is a schematic diagram of the connection structure between the first drive shaft and the friction disc;

[0025] Figure 5 A schematic diagram of the connection structure between the third sleeve and the third sliding rod;

[0026] Figure 6 This is a schematic diagram of the connection structure between the second baffle and the second spring.

[0027] Figure 7 This is a schematic diagram of the connection structure between the telescopic cylinder and the second connecting block;

[0028] Figure 8 A schematic diagram of the connection structure between the third baffle and the third spring;

[0029] Figure 9 This is a schematic diagram of the connection structure between the second rotating shaft and the first sprocket;

[0030] Figure 10 This is a schematic diagram of the connection structure between the third rotating shaft and the torsion spring;

[0031] Figure 11 This is a schematic diagram of the connection structure between the third baffle and the fourth spring.

[0032] In the diagram: 1. First buffer mechanism; 11. Chassis; 12. First sliding rod; 13. First sleeve; 14. First baffle; 15. First spring; 16. Support seat; 17. First drive shaft; 18. Universal joint; 19. Second drive shaft; 110. Tire; 111. Friction disc; 2. Second buffer mechanism; 21. Support block; 22. First rotating shaft; 23. Second sleeve; 24. Second baffle; 25. Second sliding rod; 26. Second spring; 27. Connecting plate; 28. Rotating pin; 29. ​​First connecting block; 210. 211. Telescopic block; 212. Telescopic cylinder; 213. Second connecting block; 214. Third baffle; 215. Third spring; 216. Bearing; 3. Pressing mechanism; 31. Third connecting block; 32. Fixed body; 33. Second rotating shaft; 34. First sprocket; 35. Track; 4. Bending mechanism; 41. Third rotating shaft; 42. Movable plate; 43. Fourth rotating shaft; 44. Second sprocket; 45. Torsion spring; 5. Reduction mechanism; 51. Third sleeve; 52. Third sliding rod; 53. Third baffle; 54. Fourth spring; 55. Arc block. Detailed Implementation

[0033] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0034] like Figures 1-11 As shown, the rear wheel suspension device of a road roller according to the present invention includes a first buffer mechanism 1, a second buffer mechanism 2, a pressing mechanism 3, a bending mechanism 4, and a deceleration mechanism 5. The first buffer mechanism 1 is provided with the second buffer mechanism 2 at one end, the second buffer mechanism 2 is provided with the pressing mechanism 3 at one end, the pressing mechanism 3 is provided with the bending mechanism 4 at one end, and the bending mechanism 4 is provided with the deceleration mechanism 5 at one end. The structure allows the track 35 to move downward when the telescopic block 210 moves downward, thus adhering to the road surface. The track 35 adhering to the road surface increases the contact area between the road roller and the road surface. The arc-shaped block 55, when the road roller encounters large bumps, will decelerate the wheel 110 when it adheres to the friction disc 111, thereby allowing the wheel 110 to pass slowly over bumpy roads, avoiding excessive speed and causing severe vibration of the road roller, thus effectively protecting the road roller from vibration damage.

[0035] Preferably, the first buffer mechanism 1 includes a chassis 11, a first sliding rod 12 fixedly connected to the lower end of the chassis 11, a first sleeve 13 sleeved on the outside of the first sliding rod 12, a first baffle 14 fixedly connected to the side wall of the first sleeve 13, a first spring 15 fixedly connected to the upper end of the first baffle 14, the upper end of the first spring 15 fixedly connected to the chassis 11, a support base 16 fixedly connected to the lower end of the first sleeve 13, a first drive shaft 17 rotatably connected inside the support base 16, a friction disc 111 fixedly connected to the side wall of the first drive shaft 17, a universal joint 18 fixedly connected to one end of the first drive shaft 17, and a second drive shaft 19 fixedly connected to one end of the universal joint 18. One end of the second drive shaft 19 is fixedly connected to a tire 110. When the road roller travels on a bumpy road surface, there will be relative movement between the chassis 11 and the tire 110. That is, the tire 110 moves upward and the chassis 11 moves downward. The downward movement of the chassis 11 will drive the first sliding rod 12 to move downward. The downward movement of the chassis 11 will compress the first spring 15. The downward movement of the chassis 11 will play a preliminary role in buffering and shock absorption of the road roller. The first spring 15 can provide preliminary buffering and shock absorption between the chassis 11 and the wheels, and mitigate the impact load transmitted to the vehicle body from the uneven road surface, attenuate the vibration caused by it, ensure the comfort of the driver and passengers, and reduce the dynamic load of the vehicle itself.

[0036] Preferably, the second buffer mechanism 2 includes a support block 21, the upper end of which is fixedly connected to the chassis 11. A first rotating shaft 22 is rotatably connected to the side wall of the support block 21. A second sleeve 23 is fixedly connected to one end of the first rotating shaft 22. A second baffle 24 is slidably connected to the inner side wall of the second sleeve 23. A second sliding rod 25 is fixedly connected to one end of the second baffle 24. A second spring 26 is fixedly connected to one end of the second baffle 24. One end of the second spring 26 is fixedly connected to the second sleeve 23. A connecting plate 27 is fixedly connected to one end of the second sliding rod 25. A rotating... Pin 28, a first connecting block 29 is fixedly connected to the side wall of the rotating pin 28, a telescopic block 210 is fixedly connected to one end of the first connecting block 29, a second connecting block 212 is fixedly connected to the side wall of the telescopic block 210, a bearing 215 is fixedly connected to one end of the second connecting block 212, the inner side wall of the bearing 215 is fixedly connected to the second transmission shaft 19, a telescopic cylinder 211 is slidably connected to the side wall of the telescopic block 210, a third baffle 213 is fixedly connected to one end of the telescopic block 210, a third spring 214 is fixedly connected to the lower end of the third baffle 213, and the lower end of the third spring 214 is fixedly connected to the telescopic cylinder 211;When tire 110 moves upward, it drives the second drive shaft 19 to move upward. The upward movement of the second drive shaft 19 rotates around the universal joint 18, which in turn drives the bearing 215 to move upward. The upward movement of the bearing 215 in turn drives the second connecting block 212 to move upward. The upward movement of the second connecting block 212 in turn drives the telescopic block 210 to move upward. The downward movement of chassis 11 drives the support block 21 to move downward. The downward movement of the support block 21 in turn drives the first rotating shaft 22 to move downward. The downward movement of the first rotating shaft 22 in turn drives the second sleeve 23 to move downward. The downward movement of the second sleeve 23 in turn drives the second spring 26 to move downward. The downward movement of the second spring 26 in turn drives the second baffle 24 to move downward. The downward movement of the second baffle 24 in turn drives the second sliding rod 25 to move downward. The downward movement of the second sliding rod 25 in turn drives the connecting plate 27 to move downward. The downward movement of wheel 110 causes the rotating pin 28 to move downward, which in turn causes the first connecting block 29 to move downward. This downward movement of the first connecting block 29 causes the telescopic block 210 to move downward, which in turn causes the third baffle 213 to move downward. The downward movement of the third baffle 213 compresses the third spring 214. Thus, when the tire 110 moves upward, the downward movement of the third baffle 213 compressing the third spring 214 further buffers and dampens the roller. Through this structure, when the wheel 110 moves upward, the downward movement of the telescopic block 210 compresses the third spring 214, causing relative movement between the wheel 110 and the telescopic block 210. This further buffers and dampens the roller, and simultaneously causes the second baffle 24 to compress the second spring 26. The compression of the second spring 26 by the second baffle 24 buffers the force between the second drive shaft 19 and the first drive shaft 17.

[0037] Preferably, the pressing mechanism 3 includes a third connecting block 31, the lower end of which is fixedly connected to the telescopic block 210. A fixed body 32 is fixedly connected to one end of the third connecting block 31. A second rotating shaft 33 is rotatably connected to the side wall of the fixed body 32. A first sprocket 34 is fixedly connected to the side wall of the second rotating shaft 33. One end of the first sprocket 34 engages with a track 35. When the telescopic block 210 moves downward, it drives the third connecting block 31 downward. The downward movement of the third connecting block 31 drives the fixed body 32 downward. The downward movement of the fixed body 32 drives the second rotating shaft 33 downward. The downward movement of the second rotating shaft 33 drives the first sprocket 34 downward. The downward movement of the first sprocket 34 drives the track 35 downward. The downward movement of the track 35 brings it into contact with the road surface, and the track... The track 35 is shaped like a triangle, which increases the contact area with the ground and provides some support. Simultaneously, the track 35, in contact with the road surface, rotates with the movement of the roller due to friction. This increased contact area between the roller and the road surface improves the roller's stability and transmits vibration energy to the ground. The structure allows the track 35 to move downwards and contact the road surface when the telescopic block 210 moves downwards. This downward movement of the track 35 provides some support, and the increased contact area with the road surface, combined with friction, further enhances the roller's stability and transmits vibration energy to the ground.

[0038] Preferably, the bending mechanism 4 includes a third rotating shaft 41, one end of which is rotatably connected to the fixed body 32. A movable plate 42 is rotatably connected to the side wall of the third rotating shaft 41. A fourth rotating shaft 43 is rotatably connected to the side wall of one end of the movable plate 42. A second sprocket 44 is rotatably connected to the side wall of the fourth rotating shaft 43. A torsion spring 45 is fixedly connected to the inner side wall of the fixed body 32. The torsion spring 45 is sleeved on the outside of the third rotating shaft 41, and one end of the torsion spring 45 is fixedly connected to the movable plate 42. When the front end of the track 35 encounters a raised section, it will cause the movable plate 42 to bend inward. The inward bending of the movable plate 42 will compress the torsion spring 45, and the inward bending of the movable plate 42 will cause... The fourth shaft 43 moves inward, which drives the second sprocket 44 to move inward. The movable plate 42 can be used to adjust the angle. When the front end of the track 35 encounters a raised section of the road, it will cause the movable plate 42 to bend inward. The inward bending of the movable plate 42 will compress the torsion spring 45. The inward bending of the movable plate 42 will drive the fourth shaft 43 to move inward, which will drive the second sprocket 44 to move inward. The inward movement of the second sprocket 44 can adjust the tilt angle of the track 35 to adapt to the raised section. At the same time, when the movable plate 42 bends inward and compresses the torsion spring 45, it will further reduce vibration and improve the stability of the road roller.

[0039] Preferably, the deceleration mechanism 5 includes a third sleeve 51, the upper end of which is fixedly connected to the chassis 11. A third sliding rod 52 is slidably connected inside the third sleeve 51. A fourth baffle 53 is fixedly connected to one end of the third sliding rod 52. A fourth spring 54 is fixedly connected to the upper end of the fourth baffle 53, and the upper end of the fourth spring 54 is fixedly connected to the third sleeve 51. An arc-shaped block 55 is fixedly connected to the lower end of the third sliding rod 52. When the chassis 11 moves downward, it will drive the third sleeve 51 to move downward. The downward movement of the third sleeve 51 will drive the third baffle 53 to move downward. The downward movement of the third baffle 53 will drive the third sliding rod 52 to move downward. The downward movement of the third sliding rod 52 will drive the arc-shaped block 55 to move downward. The arc-shaped block 55 will come into contact with the friction disc 111 when it moves downward. The greater the downward movement of the chassis 11, the greater the downward movement of the arc-shaped block 55. The greater the pressure between the arc block 55 and the friction disc 111, the more the arc block 55 moves downward, causing the third sliding rod 52 to slide into the third sleeve 51. The sliding of the third sliding rod 52 into the third sleeve 51 causes the third baffle 53 to slide into the third sleeve 51, compressing the fourth spring 54. When the arc block 55 is in contact with the friction disc 111, it slows down the wheel 110, allowing the wheel 110 to pass slowly over bumpy roads, avoiding excessive speed and causing severe vibration of the road roller. This effectively protects the road roller from vibration damage. By setting the arc block 55, when the road roller encounters large bumps, the arc block 55 will slow down the wheel 110 when it is in contact with the friction disc 111, allowing the wheel 110 to pass slowly over bumpy roads, avoiding excessive speed and causing severe vibration of the road roller. This effectively protects the road roller from vibration damage.

[0040] Working Principle: When the road roller travels on a bumpy road surface, relative movement occurs between the chassis 11 and the tires 110. Specifically, the tires 110 move upwards while the chassis 11 moves downwards. This downward movement of the chassis 11 causes the first sliding rod 12 to move downwards, compressing the first spring 15. The first spring 15 provides initial cushioning and shock absorption for the road roller. The first spring 15 effectively cushions and absorbs shocks between the chassis 11 and the wheels, mitigating the impact load transmitted from the uneven road surface to the vehicle body, attenuating the resulting vibrations, ensuring passenger comfort, and reducing the dynamic load on the vehicle itself.

[0041] When tire 110 moves upward, it drives the second drive shaft 19 to move upward. The upward movement of the second drive shaft 19 rotates around the universal joint 18, which in turn drives the bearing 215 to move upward. The upward movement of the bearing 215 in turn drives the second connecting block 212 to move upward. The upward movement of the second connecting block 212 in turn drives the telescopic block 210 to move upward. The downward movement of chassis 11 drives the support block 21 to move downward. The downward movement of the support block 21 in turn drives the first rotating shaft 22 to move downward. The downward movement of the first rotating shaft 22 in turn drives the second sleeve 23 to move downward. The downward movement of the second sleeve 23 in turn drives the second spring 26 to move downward. The downward movement of the second spring 26 in turn drives the second baffle 24 to move downward. The downward movement of the second baffle 24 in turn drives the second sliding rod 25 to move downward. The downward movement of the second sliding rod 25 in turn drives the connecting plate 27 to move downward. The downward movement of wheel 110 causes the rotating pin 28 to move downward, which in turn causes the first connecting block 29 to move downward. The downward movement of the first connecting block 29 causes the telescopic block 210 to move downward, which in turn causes the third baffle 213 to move downward. The downward movement of the third baffle 213 compresses the third spring 214. Thus, when the tire 110 moves upward, the downward movement of the third baffle 213 compresses the third spring 214, which further buffers and dampens the road roller. Through the structure, when the wheel 110 moves upward, the downward movement of the telescopic block 210 compresses the third spring 214, and the wheel 110 and the telescopic block 210 move relative to each other. This further buffers and dampens the road roller, and at the same time, it also causes the second baffle 24 to compress the second spring 26. The compression of the second spring 26 by the second baffle 24 buffers the force between the second drive shaft 19 and the first drive shaft 17.

[0042] As the telescopic block 210 moves downward, it drives the third connecting block 31 downward. The downward movement of the third connecting block 31 drives the fixed body 32 downward, which in turn drives the second rotating shaft 33 downward. The downward movement of the second rotating shaft 33 drives the first sprocket 34 downward, which in turn drives the track 35 downward. The downward movement of the track 35 brings it into contact with the road surface. The track 35 is shaped like a triangle, which increases the contact area with the ground and provides some support. Simultaneously, the track 35, in contact with the road surface, moves with the roller under friction. As the roller moves and rotates, the track 35, in contact with the road surface, increases the contact area between the roller and the road surface, thereby improving the roller's stability and transmitting vibration energy to the ground. The structure allows the track 35 to move downwards and contact the road surface when the telescopic block 210 moves downwards. This downward movement of the track 35 provides support, and the track 35, under the influence of friction, rotates with the roller's movement. This increased contact area between the track 35 and the road surface further enhances the roller's stability and transmits vibration energy to the ground.

[0043] When the front end of track 35 encounters a raised section of road, it causes the movable plate 42 to bend inward. The inward bending of the movable plate 42 compresses the torsion spring 45, which in turn causes the fourth rotating shaft 43 to move inward. The inward movement of the fourth rotating shaft 43 in turn causes the second sprocket 44 to move inward. The movable plate 42 can be used to adjust the angle. When the front end of track 35 encounters a raised section of road, it causes the movable plate 42 to bend inward. The inward bending of the movable plate 42 compresses the torsion spring 45, which in turn causes the fourth rotating shaft 43 to move inward. The inward movement of the fourth rotating shaft 43 in turn causes the second sprocket 44 to move inward. The inward movement of the second sprocket 44 can adjust the tilt angle of track 35 to adapt to the raised section. At the same time, when the movable plate 42 bends inward and compresses the torsion spring 45, it also further reduces vibration and improves the stability of the road roller.

[0044] As the chassis 11 moves downward, it drives the third sleeve 51 downward. The downward movement of the third sleeve 51 drives the third baffle 53 downward, which in turn drives the third sliding rod 52 downward. The downward movement of the third sliding rod 52 drives the arc-shaped block 55 downward. The arc-shaped block 55 then comes into contact with the friction disc 111. The greater the downward movement of the chassis 11, the greater the pressure between the arc-shaped block 55 and the friction disc 111. The downward movement of the arc-shaped block 55 causes the third sliding rod 52 to slide inward into the third sleeve 51. This sliding of the third sliding rod 52 inward into the third sleeve 51 causes the third baffle 53 to slide inward into the third sleeve 51. The sliding of the three sleeves 51 compresses the fourth spring 54. When the arc-shaped block 55 is in contact with the friction disc 111, it slows down the wheel 110, allowing the wheel 110 to pass slowly over bumpy roads, avoiding excessive speed and causing severe vibration of the road roller. This effectively protects the road roller from vibration damage. The arc-shaped block 55, when the road roller encounters large bumps, slows down the wheel 110 when it is in contact with the friction disc 111, allowing the wheel 110 to pass slowly over bumpy roads, avoiding excessive speed and causing severe vibration of the road roller. This effectively protects the road roller from vibration damage.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rear wheel suspension device for a road roller, characterized in that: It includes a first buffer mechanism (1), a second buffer mechanism (2), a pressing mechanism (3), a bending mechanism (4), and a deceleration mechanism (5). The first buffer mechanism (1) is provided with the second buffer mechanism (2) at one end, the second buffer mechanism (2) is provided with the pressing mechanism (3) at one end, the pressing mechanism (3) is provided with the bending mechanism (4) at one end, and the bending mechanism (4) is provided with the deceleration mechanism (5) at one end. The first buffer mechanism (1) includes a chassis (11), a first sliding rod (12) is fixedly connected to the lower end of the chassis (11), a first sleeve (13) is sleeved on the outside of the first sliding rod (12), a first baffle (14) is fixedly connected to the side wall of the first sleeve (13), a first spring (15) is fixedly connected to the upper end of the first baffle (14), the upper end of the first spring (15) is fixedly connected to the chassis (11), and a support seat (16) is fixedly connected to the lower end of the first sleeve (13). The second buffer mechanism (2) includes a support block (21), the upper end of which is fixedly connected to the chassis (11), a first rotating shaft (22) is rotatably connected to the side wall of the support block (21), a second sleeve (23) is fixedly connected to one end of the first rotating shaft (22), a second baffle (24) is slidably connected to the inner side wall of the second sleeve (23), a second sliding rod (25) is fixedly connected to one end of the second baffle (24), a second spring (26) is fixedly connected to one end of the second baffle (24), a second spring (26) is fixedly connected to one end of the second sleeve (23), and a connecting plate (27) is fixedly connected to one end of the second sliding rod (25). The second buffer mechanism (2) further includes a rotating pin (28). One end of the connecting plate (27) is rotatably connected to the rotating pin (28). The side wall of the rotating pin (28) is fixedly connected to a first connecting block (29). One end of the first connecting block (29) is fixedly connected to a telescopic block (210). The side wall of the telescopic block (210) is fixedly connected to a second connecting block (212). One end of the second connecting block (212) is fixedly connected to a bearing (215). The inner side wall of the bearing (215) is fixedly connected to the second transmission shaft (19). The side wall of the telescopic block (210) is slidably connected to a telescopic cylinder (211). One end of the telescopic block (210) is fixedly connected to a third baffle (213). The lower end of the third baffle (213) is fixedly connected to a third spring (214). The lower end of the third spring (214) is fixedly connected to the telescopic cylinder (211).

2. The rear wheel suspension device for a road roller according to claim 1, characterized in that: The first buffer mechanism (1) further includes a first drive shaft (17), which is rotatably connected inside the support base (16). A friction disc (111) is fixedly connected to the side wall of the first drive shaft (17). A universal joint (18) is fixedly connected to one end of the first drive shaft (17), and a second drive shaft (19) is fixedly connected to one end of the universal joint (18). A tire (110) is fixedly connected to one end of the second drive shaft (19).

3. The rear wheel suspension device for a road roller according to claim 1, characterized in that: The pressing mechanism (3) includes a third connecting block (31), the lower end of which is fixedly connected to the telescopic block (210), and a fixing body (32) is fixedly connected to one end of the third connecting block (31). A second rotating shaft (33) is rotatably connected to the side wall of the fixing body (32).

4. The rear wheel suspension device for a road roller according to claim 3, characterized in that: The pressing mechanism (3) further includes a first sprocket (34), and the second rotating shaft (33) is fixedly connected to the side wall of the first sprocket (34), and one end of the first sprocket (34) is engaged with a track (35).

5. The rear wheel suspension device for a road roller according to claim 4, characterized in that: The bending mechanism (4) includes a third rotating shaft (41), one end of which is rotatably connected to a fixed body (32), a movable plate (42) is rotatably connected to the side wall of the third rotating shaft (41), and a fourth rotating shaft (43) is rotatably connected to the side wall of the movable plate (42).

6. The rear wheel suspension device for a road roller according to claim 5, characterized in that: The bending mechanism (4) also includes a second sprocket (44), the second sprocket (44) is rotatably connected to the side wall of the fourth rotating shaft (43), a torsion spring (45) is fixedly connected to the inner side wall of the fixed body (32), the torsion spring (45) is sleeved on the outside of the third rotating shaft (41), and one end of the torsion spring (45) is fixedly connected to the movable plate (42).

7. The rear wheel suspension device for a road roller according to claim 1, characterized in that: The deceleration mechanism (5) includes a third sleeve (51), the upper end of which is fixedly connected to the chassis (11), and a third sliding rod (52) is slidably connected inside the third sleeve (51), and a fourth baffle (53) is fixedly connected to one end of the third sliding rod (52).

8. The rear wheel suspension device for a road roller according to claim 7, characterized in that: The deceleration mechanism (5) also includes a fourth spring (54). The upper end of the fourth baffle (53) is fixedly connected to the fourth spring (54). The upper end of the fourth spring (54) is fixedly connected to the third sleeve (51). The lower end of the third sliding rod (52) is fixedly connected to an arc-shaped block (55).

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