Bilaterally-driven axle damping device

Abstract

The invention discloses a bilateral driving axle damping device, and relates to the technical field of axle damping, the bilateral driving axle damping device comprises a frame, the bottom of the frame is fixedly connected with a first sleeve and a second sleeve, and the first sleeve and the second sleeve are slidably connected with a first guide column and a second guide column respectively; the first guide column and the second guide column are movably sleeved with a main spring and an auxiliary spring respectively. By installing the main spring and the auxiliary spring, self-adaptive switching of suspension rigidity is achieved, the rigidity contradiction that no-load rigidity and full-load rigidity cannot be considered at the same time in traditional suspension is solved, the equipment control stability is improved, and the adaptability to complex working conditions is improved.

Description

Technical Field

[0001] This invention relates to the field of axle damping technology, specifically to a dual-drive axle damping device. Background Technology

[0002] In agricultural plant protection and firefighting operations, the performance of the shock absorption system of plant protection machines and fire trucks directly affects the stability of the equipment and the efficiency of operation. Traditional axle shock absorption devices generally use a single spring structure as the core shock absorption element, which often makes it difficult to meet the shock absorption requirements under both no-load and full-load conditions, resulting in insufficient adaptability of the equipment under no-load and full-load conditions.

[0003] When a vehicle is unloaded, if the spring structure stiffness is too high, the excessively stiff shock absorption will result in a strong sense of bumpiness; while when a vehicle is fully loaded, if the spring structure stiffness is too low, the insufficient support will easily cause the vehicle body to sink or tilt.

[0004] Patent CN212414483U discloses a bridge stabilization structure with shock absorption function and a plant protection machine including the structure. The above patent realizes the connection between the front and rear ends of the plant protection machine bridge structure and the main frame, effectively increasing the connection strength between the plant protection machine bridge structure and the main frame, making the function more comprehensive and facilitating the promotion of the product.

[0005] The aforementioned patents address the problem that the stabilizing device for agricultural machinery axles lacks a corresponding shock-absorbing structure, making the axles prone to collisions and reducing their service life. However, there is still room for optimization in shock absorption for different scenarios. This application achieves adaptive design under both empty and full loads, solving the problem of the risk of frame collapse under heavy load conditions.

[0006] Therefore, this application proposes a dual-drive axle damping device that achieves adaptive operation under no-load and full-load conditions. Summary of the Invention

[0007] The purpose of this invention is to provide a dual-drive axle damping device to solve the technical problem mentioned in the background art of the risk of frame collapse under heavy load conditions.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a dual-drive axle damping device, comprising a frame, wherein a first sleeve and a second sleeve are fixedly connected to the bottom of the frame, a first guide post and a second guide post are slidably connected inside the first sleeve and the second sleeve respectively, a main spring and a secondary spring are movably fitted on the first guide post and the second guide post respectively, a first buffer seat and a second buffer seat are fixedly connected to the bottom of the first guide post and the second guide post respectively, a first adjusting arm is hinged to the side wall of the first buffer seat, a first movable seat is hinged to the side wall of the first adjusting arm, a first lead screw is threadedly connected to the inner wall of the first movable seat, an axle is rotatably connected to the outer wall of the first lead screw, the connection structure between the second buffer seat and the axle is the same as that between the first buffer seat and the axle, a fixed seat is fixedly connected to the outer wall of the first sleeve and the second sleeve, an arc-shaped block is fixedly connected to the outer wall of the fixed seat, and a compression seat is fixedly connected to the outer wall of the second guide post.

[0009] Preferably, a drive motor is fixedly installed inside the axle. A rotating rod is rotatably connected to the side wall of the drive motor. A first clamping seat and a second clamping seat are threadedly connected to the outer wall of the rotating rod. A first spring is fixedly connected to the inner wall of the first clamping seat. A moving plate is fixedly connected to the side wall of the first spring. A clamping block is symmetrically fixedly connected to the side wall of the moving plate. A first clamping seat is slidably connected to the outer walls of the moving plate and the clamping blocks. The second clamping seat has the same internal structure as the first clamping seat. A first connecting plate and a second connecting plate are slidably connected to the inner wall of the axle. A first toothed plate and a second toothed plate are fixedly connected to the outer walls of the first connecting plate and the second connecting plate, respectively. A first gear and a second gear are meshed and installed on the outer walls of the first toothed plate and the second toothed plate, respectively. The first gear and the second gear are fixedly connected to the outer walls of the first lead screw and the second lead screw, respectively.

[0010] Preferably, a first inclined block is symmetrically fixedly connected to the bottom of the outer wall of the fixed seat, an arc-shaped block is fixedly connected to the side wall of the first inclined block, a second inclined block is symmetrically slidably connected to the top of the outer wall of the extrusion seat, the second inclined block is located below the first inclined block, a push plate is fixedly connected to the bottom of the outer wall of the second inclined block, an extrusion seat is fixedly connected to the outer wall of the push plate, a fourth spring is fixedly connected to the side wall of the push plate, and an extrusion seat is fixedly connected to the side wall of the fourth spring.

[0011] Preferably, a cam is fixedly connected to the outer wall of the rotating rod, the side wall of the cam contacts the pressure plate, a second spring is fixedly connected to the top of the outer wall of the pressure plate, an axle is fixedly connected to the top of the outer wall of the second spring, a push rod is fixedly connected to the top of the outer wall of the pressure plate, an axle is slidably connected to the outer wall of the push rod, a piston is fixedly connected to the top of the outer wall of the push rod, an extrusion cylinder is slidably connected to the outer wall of the piston, an extrusion cylinder is fixedly connected to the outer wall of the extrusion cylinder, a first one-way valve and a second one-way valve are fixedly connected to the top of the extrusion cylinder, the first one-way valve is connected to a first sleeve through a hose, the second one-way valve is connected to an oil reservoir through a hose, and an axle is fixedly connected to the outer wall of the oil reservoir.

[0012] Preferably, a connecting frame is fixedly connected to the bottom of the outer wall of the frame, a movable frame is slidably connected to the outer wall of the connecting frame, a third spring is fixedly connected to the bottom of the inner wall of the movable frame, a connecting frame is fixedly connected to the top of the outer wall of the third spring, a fixed frame is fixedly connected to the top of the outer wall of the axle, and a connecting pad is fixedly connected to the top of the outer wall of the fixed frame.

[0013] Preferably, the main spring is disposed between the first buffer seat and the fixed seat, and the secondary spring is disposed between the second buffer seat and the compression seat.

[0014] Preferably, a driver is fixedly installed inside the frame, a universal drive shaft is movably installed on the side wall of the driver, a drive shaft seat is movably installed on the side wall of the universal drive shaft, an axle is fixedly connected to the bottom of the outer wall of the drive shaft seat, and a wheel is movably installed on the side wall of the drive shaft seat.

[0015] Preferably, a second adjusting arm is hinged to the side wall of the second buffer seat, a second movable seat is hinged to the side wall of the second adjusting arm, a second lead screw is threadedly connected to the inner wall of the second movable seat, and an axle is rotatably connected to the outer wall of the second lead screw.

[0016] Preferably, the arc-shaped blocks are symmetrically arranged on both sides of the second sleeve, and the frame is fixedly connected to the top of the outer wall of the fixing seat.

[0017] Preferably, the movable frame is in contact with the connecting pad.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This invention achieves adaptive switching of suspension stiffness by installing a main spring and a secondary spring, which solves the contradiction between the stiffness of traditional suspensions under no-load and full-load conditions, improves the stability of equipment operation, and enhances the adaptability to complex working conditions.

[0020] 2. This invention, by installing a drive motor, a first clamping seat, and a second clamping seat, solves the problem that the equipment cannot meet the needs of different road conditions, improves the stability and adaptability of the equipment, enhances the handling and stability of the vehicle, and extends the service life of the equipment.

[0021] 3. By installing a first inclined block, a second inclined block, and a fourth spring, the present invention achieves progressive contact, realizes a smooth transition of rigid impact, improves the stability of the equipment under heavy load conditions, and enhances safety.

[0022] 4. By installing a connecting frame, a moving frame, and a fixed frame, this invention improves the stability of the equipment in complex and harsh working environments, ensures the long-term stability of shock absorption performance, and enhances the reliability and durability of the equipment. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the arc-shaped block and the first inclined block of the present invention;

[0024] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 3 This is a schematic cross-sectional view of the axle structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the main spring and auxiliary spring damping structure of the present invention;

[0027] Figure 5 This is a schematic cross-sectional view of the extrusion cylinder of the present invention;

[0028] Figure 6 This is a schematic cross-sectional view of the first clamping seat of the present invention;

[0029] Figure 7 This is a schematic diagram of the moving frame and fixed frame structure of the present invention;

[0030] Figure 8 This is a cross-sectional view of the extrusion seat of the present invention.

[0031] In the diagram: 1. Frame; 2. Wheel; 3. Driver; 4. Drive shaft seat; 5. Universal joint drive shaft; 6. Main spring; 7. Axle; 8. First guide post; 9. First buffer seat; 10. First adjusting arm; 11. First moving seat; 12. First lead screw; 13. First sleeve; 14. Secondary spring; 15. Second guide post; 16. Second sleeve; 17. Second buffer seat; 18. Second adjusting arm; 19. Second moving seat; 20. Second lead screw; 21. Connecting frame; 22. Drive motor; 23. Rotating rod; 24. First clamping seat; 25. Second clamping seat; 26. First connecting plate; 27. ... 28. Toothed plate; 29. ​​Fixed seat; 30. First gear; 31. Second toothed plate; 32. First spring; 33. Second connecting plate; 34. Extrusion seat; 35. Second gear; 36. Moving plate; 37. Clamping block; 38. Extrusion cylinder; 39. Piston; 40. Push rod; 41. Pressure plate; 42. Second spring; 43. Cam; 44. Oil reservoir; 45. First check valve; 46. Second check valve; 47. Moving frame; 48. Third spring; 49. Fixed frame; 50. Connecting pad; 51. Arc-shaped block; 52. First inclined block; 53. Fourth spring; 54. Push plate; 55. Second inclined block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] Please see Figure 2 , Figure 4 and Figure 8An embodiment of the present invention provides a dual-drive axle shock absorber, comprising a frame 1. A first sleeve 13 and a second sleeve 16 are fixedly connected to the bottom of the frame 1. A first guide post 8 and a second guide post 15 are slidably connected inside the first sleeve 13 and the second sleeve 16, respectively. A main spring 6 and a secondary spring 14 are movably fitted onto the first guide post 8 and the second guide post 15, respectively. A first buffer seat 9 and a second buffer seat 17 are fixedly connected to the bottom of the first guide post 8 and the second guide post 15, respectively. A first adjusting arm 10 is hinged to the side wall of the first buffer seat 9. A first movable seat 11 is hinged to the side wall of the first adjusting arm 10. A first lead screw 12 is threadedly connected to the inner wall of the first movable seat 11. The first lead screw 12 is rotatably connected to an axle 7 on its outer wall. The connection structure between the second buffer seat 17 and the axle 7 is the same as that between the first buffer seat 9 and the axle 7. The first sleeve 13 and the second sleeve 16 are fixedly connected to a fixed seat 28 on their outer walls. The fixed seat 28 is fixedly connected to an arc-shaped block 50 on its outer wall. The second guide post 15 is fixedly connected to a pressing seat 33 on its outer wall. The connection structure between the second buffer seat 17 and the axle 7 is as follows: the second buffer seat 17 is hinged to a second adjusting arm 18 on its side wall. The second adjusting arm 18 is hinged to a second moving seat 19 on its side wall. The inner wall of the second moving seat 19 is threadedly connected to a second lead screw 20. The axle 7 is rotatably connected to the outer wall of the second lead screw 20.

[0036] Furthermore, the vehicle weight is mainly borne by the frame 1. Under no-load conditions, the load is relatively light. The frame 1 transmits the load to the main spring 6 through the first sleeve 13 and the fixed seat 28. The main spring 6 undertakes the tasks of shock absorption and support. At this time, the arc-shaped block 50 on the fixed seat 28 is not in contact with the compression seat 33, and the compression seat 33 is in a relatively high position relative to the arc-shaped block 50. The auxiliary spring 14 does not undertake the tasks of shock absorption and support. When the equipment encounters minor unevenness in the road surface, the axle 7 experiences an upward impact force. The axle 7 drives the first lead screw 12 to move upward, the first lead screw 12 drives the first moving seat 11 to move upward, the first moving seat 11 drives the first adjusting arm 10 to move upward, and the first adjusting arm 10 drives the first buffer seat 9 to move upward. Simultaneously, the second buffer seat 17 is driven through the same transmission method as the first buffer seat 9, that is, the second lead screw 20 drives the second moving seat 19, and the second moving seat 19 drives the second adjusting arm 10 to move upward. The second adjusting arm 18 moves the second buffer seat 17 upward; the first buffer seat 9 moves the first guide post 8 upward, and the first guide post 8 slides on the inner wall of the first sleeve 13, compressing the main spring 6; while the second buffer seat 17 moves the second guide post 15 on the inner wall of the second sleeve 16, the second guide post 15 moves the auxiliary spring 14 and the compression seat 33 upward. Since the distance between the compression seat 33 and the arc block 50 is relatively large when the equipment is unloaded, the compression seat 33 will not contact the arc block 50, so the second buffer seat 17 will not compress the auxiliary spring 14; when the equipment moves down again, the main spring 6 releases the stored energy, causing the axle 7 to move down, thereby ensuring the stability of the frame 1. The low stiffness of the main spring 6 can fully absorb the impact and effectively absorb the vibration caused by the small unevenness of the road surface, thereby reducing the vibration of the vehicle body and ensuring the stability and handling of the vehicle;

[0037] Under full load, the load on the frame 1 increases, leading to increased pressure on the first sleeve 13, the second sleeve 16, and the fixed seat 28. The main spring 6 is further compressed. At this time, the fixed seat 28 drives the arc block 50 to move further downward, so that the arc block 50 contacts the compression seat 33. The fixed seat 28 transfers the load to the auxiliary spring 14 through the arc block 50 and the compression seat 33, so that the auxiliary spring 14 undertakes the task of shock absorption and support, thereby improving the overall stiffness of the entire shock absorption structure. The main spring 6 and the auxiliary spring 14 jointly resist the impact load transmitted from the axle 7. By sharing the load through the auxiliary spring 14, a solid support is provided for the fully loaded vehicle body, effectively suppressing the vehicle body sinking, improving the stability of the equipment, preventing tilting, and avoiding excessive compression of the main spring 6, which would lead to shock absorption failure. By using the main spring 6 for flexible buffering under light load and the auxiliary spring 14 for enhanced rigidity under heavy load, the conflict between comfort and stability under no-load and full-load conditions is resolved.

[0038] Please see Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 8 One embodiment of the present invention provides a dual-drive axle shock absorption device, wherein a drive motor 22 is fixedly installed inside the axle 7, a rotating rod 23 is rotatably connected to the side wall of the drive motor 22, a first clamping seat 24 and a second clamping seat 25 are threadedly connected to the outer wall of the rotating rod 23, a first spring 31 is fixedly connected to the inner wall of the first clamping seat 24, a moving plate 35 is fixedly connected to the side wall of the first spring 31, and clamping blocks 36 are symmetrically fixedly connected to the side wall of the moving plate 35. The outer walls of the moving plate 35 and the clamping blocks 36 slide... The axle 7 is movably connected to a first clamping seat 24. The second clamping seat 25 has the same internal structure as the first clamping seat 24. The inner wall of the axle 7 is slidably connected to a first connecting plate 26 and a second connecting plate 32. The outer walls of the first connecting plate 26 and the second connecting plate 32 are respectively fixedly connected to a first toothed plate 27 and a second toothed plate 30. The outer walls of the first toothed plate 27 and the second toothed plate 30 are respectively meshed with a first gear 29 and a second gear 34. The first gear 29 and the second gear 34 are respectively fixedly connected to the outer walls of the first lead screw 12 and the second lead screw 20.

[0039] Furthermore, when the drive motor 22 is started, and the drive motor 22 drives the rotating rod 23 to rotate forward, the rotating rod 23 drives the first clamping seat 24 and the second clamping seat 25 to move, so that the first clamping seat 24 moves closer to the first connecting plate 26 and the second clamping seat 25 moves away from the second connecting plate 32. As the first clamping seat 24 moves, when the axle 7 no longer abuts against the clamping block 36 on the first clamping seat 24, the first spring 31 releases its elastic potential energy. The first spring 31 drives the moving plate 35 to move, and the moving plate 35 drives the clamping block 36 to move. At this time, the clamping blocks 36 on the first clamping seat 24 are respectively located on both sides of the first connecting plate 26, so that the first clamping seat 24 drives the clamping block 36 and the first connecting plate 26 to move. The first connecting plate 26 drives the first toothed plate 27 to move, the first toothed plate 27 drives the first gear 29 to rotate, the first gear 29 drives the first lead screw 12 to rotate, and the first lead screw 12 drives the first moving seat 11 to move, so that the first... As the two first moving seats 11 on the lead screw 12 gradually approach each other, the first moving seats 11 drive the first adjusting arm 10 to deflect, and the first adjusting arm 10 drives the first buffer seat 9 to gradually move upward. The first buffer seat 9 compresses the main spring 6, thereby pre-compressing the main spring 6. When the drive motor 22 drives the rotating rod 23 to reverse, causing the first clamping seat 24 to reset, the first clamping seat 24 drives the clamping block 36 and the first connecting plate 26 to move. When one of the clamping blocks 36 touches the axle 7, the clamping block 36 drives the moving plate 35 to compress the first spring 31. The moving plate 35 drives one end of the other clamping block 36, thereby causing the two clamping blocks 36 to gradually move into the first clamping seat 24. The clamping block 36 can no longer drive the first connecting plate 26, thereby resetting the first connecting plate 26 and the first clamping seat 24. In addition, a ferromagnetic adsorption structure can be set on the first connecting plate 26 and the axle 7 to ensure the stability of the initial state of the first connecting plate 26.

[0040] When the first clamping seat 24 and the second clamping seat 25 are in the initial state, and the drive motor 22 drives the rotating rod 23 to reverse, the first clamping seat 24 moves away from the first connecting plate 26, and the second clamping seat 25 moves closer to the second connecting plate 32. The second clamping seat 25 drives the second connecting plate 32 through the same structure and movement method as the first clamping seat 24. The second connecting plate 32 drives the second toothed plate 30 to move. The second toothed plate 30 drives the second gear 34 to rotate. The second gear 34 drives the second lead screw 20 to rotate. The second lead screw 20 drives the second moving seat 19. The second moving seats 19 move closer to each other. The second moving seat 19 drives the second adjusting arm 18 to deflect. The second adjusting arm 18 drives the second buffer seat 17 to move upward. The second buffer seat 17 drives the second guide post 15 and the pressing seat 33 to move upward, so that the pressing seat 33 contacts the arc block 50, thereby allowing the secondary spring 14 to bear the load and shock absorption tasks.

[0041] The main spring 6 is preloaded by the drive motor 22, or the initial gap between the auxiliary spring 14 and the frame 1 is adjusted. Preloading the main spring 6 provides initial support, preventing excessive sag of the equipment under partial load. This ensures the separation of the compression seat 33 and the arc block 50 under light load conditions, reducing unnecessary mechanical wear. Furthermore, changing the preload of the main spring 6 allows for a smooth transition in damping characteristics, preventing abrupt changes in the equipment's damping system stiffness from affecting its dynamic performance when the auxiliary spring 14 bears the load and damping load. It also prevents insufficient compression of the main spring 6 under heavy load, which could lead to the auxiliary spring 14's inability to participate in the load-bearing process and cause temporary equipment instability. Adjusting the gap between the auxiliary spring 14 and the frame 1... By adjusting the initial gap between the compression seat 33 and the fixed seat 28, the timing of the auxiliary spring 14 bearing the load and shock absorption can be autonomously adjusted. This allows the auxiliary spring 14 to actively bear the load and shock absorption when the equipment moves on flat roads, temporarily increasing the stiffness of the shock absorption system. This effectively resists the tilt, pitch, and yaw movements of the equipment, maintaining the vehicle's stable posture, effectively suppressing the equipment's nose-diving phenomenon, and improving the vehicle's handling and stability. In addition, when faced with extremely sudden heavy loads, the auxiliary spring 14 can take over, keeping the shock absorption system in a high-stiffness state at all times. This reduces the frequent separation and contact between the compression seat 33 and the arc block 50, extending the service life of key components and further improving the service life of the equipment.

[0042] Please see Figure 1 , Figure 2 , Figure 4 and Figure 8An embodiment of the present invention provides a dual-drive axle shock absorber, wherein a first inclined block 51 is symmetrically fixedly connected to the bottom of the outer wall of the fixed seat 28, an arc-shaped block 50 is fixedly connected to the side wall of the first inclined block 51, a second inclined block 54 is symmetrically slidably connected to the top of the outer wall of the compression seat 33, the second inclined block 54 is located below the first inclined block 51, a push plate 53 is fixedly connected to the bottom of the outer wall of the second inclined block 54, a compression seat 33 is slidably connected to the outer wall of the push plate 53, a fourth spring 52 is fixedly connected to the side wall of the push plate 53, and a compression seat 33 is fixedly connected to the side wall of the fourth spring 52.

[0043] Furthermore, when fully loaded, the frame 1 moves the first sleeve 13, the second sleeve 16, and the fixed seat 28 downwards. The fixed seat 28 compresses the main spring 6, and the fixed seat 28 moves the arc-shaped block 50 and the first inclined block 51 downwards. The arc-shaped block 50 and the first inclined block 51 gradually approach the pressing seat 33. When the first inclined block 51 contacts the second inclined block 54, the first inclined block 51 moves the second inclined block 54 downwards. At the same time, the second inclined block 54 moves horizontally, and the second inclined block 54 drives the push plate 53 to compress the fourth spring 52, thereby causing the second inclined block 54 to press against the first... The vertically downward force transmitted by the inclined block 51 is dispersed into vertically downward and horizontal forces. The horizontal force is initially absorbed by the fourth spring 52. As the first inclined block 51 moves out from the top of the second inclined block 54 and gradually approaches the extrusion seat 33, the arc block 50, the first inclined block 51 and the extrusion seat 33 come into contact. During this process, the extrusion seat 33 gradually compresses the secondary spring 14. The force is dispersed by the second inclined block 54, thereby extending the stiffness switching time and achieving gradual contact. This avoids the secondary spring 14 suddenly intervening under heavy load, which would cause a sudden change in the stiffness of the damping system and trigger impact vibration.

[0044] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 An embodiment of the present invention provides a dual-drive axle damping device, wherein a cam 42 is fixedly connected to the outer wall of the rotating rod 23, the side wall of the cam 42 contacts the pressure plate 40, a second spring 41 is fixedly connected to the top of the outer wall of the pressure plate 40, an axle 7 is fixedly connected to the top of the outer wall of the second spring 41, a push rod 39 is fixedly connected to the top of the outer wall of the pressure plate 40, an axle 7 is slidably connected to the outer wall of the push rod 39, a piston 38 is fixedly connected to the top of the outer wall of the push rod 39, an extrusion cylinder 37 is slidably connected to the outer wall of the piston 38, an extrusion cylinder 37 is fixedly connected to the outer wall of the extrusion cylinder 37, a first one-way valve 44 and a second one-way valve 45 are fixedly connected to the top of the extrusion cylinder 37, the first one-way valve 44 is connected to a first sleeve 13 through a hose, the second one-way valve 45 is connected to an oil reservoir 43 through a hose, and an axle 7 is fixedly connected to the outer wall of the oil reservoir 43.

[0045] Furthermore, when the drive motor 22 adjusts the preload of the main spring 6 or the initial gap between the secondary spring 14 and the frame 1, the drive motor 22 drives the rotating rod 23 to rotate. The rotating rod 23 drives the cam 42 to rotate. When the profile surface of the cam 42 facing the pressure plate 40 gradually rotates from the position closest to the rotating rod 23 to the position furthest from it, the cam 42 drives the pressure plate 40 to compress the second spring 41. The pressure plate 40 drives the push rod 39 to move upward, and the push rod 39 drives the piston 38 to move upward. The piston 38 squeezes out the lubricating oil in the extrusion cylinder 37. The lubricating oil in the extrusion cylinder 37 is squeezed into the first sleeve 13 through the first one-way valve 44 from the hose, lubricating the contact surface between the first sleeve 13 and the first guide post 8. The addition of a hose and a one-way valve structure lubricates the contact surface between the second sleeve 16 and the second guide post 15. When the profile surface of the cam 42 facing the pressure plate 40 gradually rotates from the farthest position to the closest position from the rotating rod 23, the second spring 41 releases its elastic potential energy. The second spring 41 drives the pressure plate 40 to contact the cam 42, the pressure plate 40 drives the push rod 39 to move downward, and the push rod 39 drives the piston 38 to move downward, thereby drawing the lubricating oil in the oil tank 43 into the extrusion cylinder 37 through the hose and the second one-way valve 45. The main spring 6 and the auxiliary spring 14 are adjusted by the drive motor 22 to lubricate synchronously, solving the problem of increased equipment wear risk caused by the introduction of the auxiliary spring 14 and reducing the risk of abnormal noise.

[0046] Please see Figure 2 , Figure 4 and Figure 7 An embodiment of the present invention provides a dual-drive axle shock absorption device, wherein a connecting frame 21 is fixedly connected to the bottom of the outer wall of the frame 1, a movable frame 46 is slidably connected to the outer wall of the connecting frame 21, a third spring 47 is fixedly connected to the bottom of the inner wall of the movable frame 46, the connecting frame 21 is fixedly connected to the top of the outer wall of the third spring 47, a fixed frame 48 is fixedly connected to the top of the outer wall of the axle 7, and a connecting pad 49 is fixedly connected to the top of the outer wall of the fixed frame 48.

[0047] Furthermore, under heavy load, the frame 1 drives the connecting frame 21, the third spring 47, and the moving frame 46 to move downwards. When the moving frame 46 contacts the axle 7, the connecting frame 21 compresses the third spring 47, thereby providing a certain degree of buffering and sharing a certain degree of load. Through the connecting frame 21, the moving frame 46, and the fixed frame 48, the shock absorption system, which includes components such as the first sleeve 13, the second sleeve 16, the first guide post 8, the second guide post 15, the main spring 6, and the auxiliary spring 14, can be protected, blocking the intrusion path of gravel and mud, and achieving sealed protection of the shock absorption system in harsh environments. The connecting pad 49 contacts the moving frame 46, avoiding contact between the connecting pad 49 and the fixed frame 48, preventing wear on the connecting pad 49 and the fixed frame 48 due to horizontal impact, and extending service life.

[0048] Please see Figure 2 and Figure 4 An embodiment of the present invention provides a dual-drive axle shock absorption device, wherein a driver 3 is fixedly installed inside the frame 1, a universal drive shaft 5 is movably installed on the side wall of the driver 3, a drive shaft seat 4 is movably installed on the side wall of the universal drive shaft 5, an axle 7 is fixedly connected to the bottom of the outer wall of the drive shaft seat 4, and a wheel 2 is movably installed on the side wall of the drive shaft seat 4.

[0049] Furthermore, the driver 3 is installed inside the frame 1. The driver 3 is connected to one end of the intermediate shaft of the drive shaft seat 4 through the universal drive shaft 5. The other end of the intermediate shaft of the drive shaft seat 4 is connected to the wheel 2. The drive shaft seat 4 is fixedly installed on the axle 7. The axle 7 and the frame 1 can move up and down relative to each other through the first sleeve 13, the second sleeve 16, the first guide post 8, and the second guide post 15. The tension of the main spring 6 and the auxiliary spring 14 is used to buffer the relative movement between the frame 1 and the axle 7.

[0050] Working principle: When the drive motor 22 drives the rotating rod 23 to rotate forward, the first clamping seat 24 of the rotating rod 23 approaches the first connecting plate 26. The clamping block 36 drives the first connecting plate 26 to move the first toothed plate 27, the first gear 29, the first lead screw 12, and the first moving seat 11. The first moving seat 11 drives the first adjusting arm 10, the first buffer seat 9, and the pre-compressed main spring 6.

[0051] When the drive motor 22 drives the rotating rod 23 to reverse, the second buffer seat 17 moves upward through the same steps described above. The second buffer seat 17 drives the second guide post 15 and the pressing seat 33. The pressing seat 33 drives the second inclined block 54 to contact the first inclined block 51. The first inclined block 51 drives the second inclined block 54 and the push plate 53. The fourth spring 52 is gradually compressed. The pressing seat 33 contacts the arc block 50, actively causing the auxiliary spring 14 to bear the load and shock absorption tasks.

[0052] When the rotating rod 23 rotates, it drives the cam 42 and the pressure plate 40. The pressure plate 40 drives the push rod 39 to move up and down periodically. When the push rod 39 drives the piston 38 to move upward, the piston 38 squeezes the lubricating oil out of the extrusion cylinder 37. When the push rod 39 drives the piston 38 to move downward, the piston 38 draws the lubricating oil into the extrusion cylinder 37.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual-drive axle damping device, characterized in that: The vehicle includes a frame (1), the bottom of which is fixedly connected to a first sleeve (13) and a second sleeve (16). A first guide post (8) and a second guide post (15) are slidably connected inside the first sleeve (13) and the second sleeve (16), respectively. A main spring (6) and a secondary spring (14) are movably fitted onto the first guide post (8) and the second guide post (15), respectively. A first buffer seat (9) and a second buffer seat (17) are fixedly connected to the bottom of the first guide post (8) and the second guide post (15), respectively. A first adjusting arm (10) is hinged to the side wall of the first buffer seat (9). The first movable seat (11) is hinged to the side wall of the arm (10). The first movable seat (11) is connected to the inner wall of the first screw (12) by a thread. The axle (7) is rotatably connected to the outer wall of the first screw (12). The connection structure between the second buffer seat (17) and the axle (7) is the same as that between the first buffer seat (9) and the axle (7). The first sleeve (13) and the second sleeve (16) are fixedly connected to the outer wall of the fixed seat (28). The outer wall of the fixed seat (28) is fixedly connected to the arc block (50). The outer wall of the second guide post (15) is fixedly connected to the compression seat (33).

2. The dual-drive axle damping device according to claim 1, characterized in that: A drive motor (22) is fixedly installed inside the axle (7). A rotating rod (23) is rotatably connected to the side wall of the drive motor (22). A first clamping seat (24) and a second clamping seat (25) are threadedly connected to the outer wall of the rotating rod (23). A first spring (31) is fixedly connected to the inner wall of the first clamping seat (24). A moving plate (35) is fixedly connected to the side wall of the first spring (31). A clamping block (36) is symmetrically fixedly connected to the side wall of the moving plate (35). The first clamping seat (24) and the second clamping seat (25) are slidably connected to the outer walls of the moving plate (35) and the clamping block (36). The internal structure of the holder (25) is the same as that of the first clamping holder (24). The inner wall of the axle (7) is slidably connected to the first connecting plate (26) and the second connecting plate (32). The outer walls of the first connecting plate (26) and the second connecting plate (32) are respectively fixedly connected to the first toothed plate (27) and the second toothed plate (30). The outer walls of the first toothed plate (27) and the second toothed plate (30) are respectively meshed with the first gear (29) and the second gear (34). The first gear (29) and the second gear (34) are respectively fixedly connected to the outer walls of the first lead screw (12) and the second lead screw (20).

3. The dual-drive axle damping device according to claim 1, characterized in that: The bottom of the outer wall of the fixed seat (28) is symmetrically fixedly connected to a first inclined block (51), and the side wall of the first inclined block (51) is fixedly connected to an arc block (50). The top of the outer wall of the extrusion seat (33) is symmetrically slidably connected to a second inclined block (54). The second inclined block (54) is located below the first inclined block (51). The bottom of the outer wall of the second inclined block (54) is fixedly connected to a push plate (53), the outer wall of the push plate (53) is fixedly connected to an extrusion seat (33), the side wall of the push plate (53) is fixedly connected to a fourth spring (52), and the side wall of the fourth spring (52) is fixedly connected to an extrusion seat (33).

4. The dual-drive axle damping device according to claim 2, characterized in that: A cam (42) is fixedly connected to the outer wall of the rotating rod (23). The side wall of the cam (42) is in contact with the pressure plate (40). A second spring (41) is fixedly connected to the top of the outer wall of the pressure plate (40). An axle (7) is fixedly connected to the top of the outer wall of the second spring (41). A push rod (39) is fixedly connected to the top of the outer wall of the pressure plate (40). An axle (7) is slidably connected to the outer wall of the push rod (39). A piston (38) is fixedly connected to the top of the outer wall of the push rod (39). An extrusion cylinder (37) is slidably connected to the outer wall of the piston (38). An extrusion cylinder (37) is fixedly connected to the outer wall of the extrusion cylinder (37). A first one-way valve (44) and a second one-way valve (45) are fixedly connected to the top of the extrusion cylinder (37). A first sleeve (13) is connected to the first one-way valve (44) through a hose. An oil tank (43) is connected to the second one-way valve (45) through a hose. An axle (7) is fixedly connected to the outer wall of the oil tank (43).

5. A dual-drive axle damping device according to claim 1, characterized in that: The bottom of the outer wall of the frame (1) is fixedly connected to a connecting frame (21), the outer wall of the connecting frame (21) is slidably connected to a moving frame (46), the bottom of the inner wall of the moving frame (46) is fixedly connected to a third spring (47), the top of the outer wall of the third spring (47) is fixedly connected to a connecting frame (21), the top of the outer wall of the axle (7) is fixedly connected to a fixed frame (48), and the top of the outer wall of the fixed frame (48) is fixedly connected to a connecting pad (49).

6. The dual-drive axle damping device according to claim 1, characterized in that: The main spring (6) is disposed between the first buffer seat (9) and the fixed seat (28), and the secondary spring (14) is disposed between the second buffer seat (17) and the compression seat (33).

7. The dual-drive axle damping device according to claim 1, characterized in that: The frame (1) is fixedly installed with a driver (3), a universal drive shaft (5) is movably installed on the side wall of the driver (3), a drive shaft seat (4) is movably installed on the side wall of the universal drive shaft (5), an axle (7) is fixedly connected to the bottom of the outer wall of the drive shaft seat (4), and a wheel (2) is movably installed on the side wall of the drive shaft seat (4).

8. The dual-drive axle damping device according to claim 1, characterized in that: The second buffer seat (17) has a second adjusting arm (18) hinged to its side wall, and the second adjusting arm (18) has a second moving seat (19) hinged to its side wall. The inner wall of the second moving seat (19) is connected to a second lead screw (20) by a thread, and the outer wall of the second lead screw (20) is rotatably connected to an axle (7).

9. A dual-drive axle damping device according to claim 1, characterized in that: The arc-shaped blocks (50) are symmetrically arranged on both sides of the second sleeve (16), and the frame (1) is fixedly connected to the top of the outer wall of the fixed seat (28).

10. A dual-drive axle damping device according to claim 5, characterized in that: The movable frame (46) comes into contact with the connecting pad (49).

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