Multi-stage large-corner hydraulic shock absorber assembly

Abstract

The multi-stage large-corner hydraulic shock absorber assembly comprises a large-corner shock absorption system and a hydraulic shock absorption system, the large-corner shock absorption system and the hydraulic shock absorption system are fixedly connected, and a mounting plate is fixedly arranged on the outer edge of the large-corner shock absorption system; the large-corner vibration reduction system is provided with a vibration reduction spring, the vibration reduction spring is arranged in a lubricating cavity, lubricating grease is arranged in the lubricating cavity, the hydraulic vibration reduction system is provided with a vibration reduction cavity, and liquid vibration reduction grease is arranged in the vibration reduction cavity. The technical problems that an existing vehicle shock absorber is not ideal in shock absorption effect, assemblies are abraded fast, the comfort level and the service life of a vehicle are affected, and the maintenance cost is increased are solved. The clutch can be widely applied to clutches.

Description

Technical Field

[0001] This invention relates to a vibration damper assembly, and more particularly to a multi-stage large-angle hydraulic vibration damper assembly. Background Technology

[0002] Currently, there are increasingly higher requirements for automotive comfort, demanding smooth, vibration-free, and noise-free operation. Especially during idling, the engine's rotational uniformity is poor, and instantaneous speed fluctuations often cause impacts between the meshing gears in the transmission, resulting in a relatively loud "clattering" noise.

[0003] To address the aforementioned issues, Chinese patent CN217784117U discloses a large-angle multi-plate torsion damper, which improves the torsion angle of the damper and achieves better damping performance through a structure in which springs are connected in pairs.

[0004] However, if the torsion angle of the above-mentioned shock absorber is too large during use, the spring will be subjected to a large force, which will cause it to fatigue or even be damaged prematurely, affecting its service life. Summary of the Invention

[0005] This invention addresses the technical problems of existing vehicle shock absorbers, such as unsatisfactory damping effect, rapid component wear, which affects vehicle comfort and service life and increases maintenance costs. It provides a multi-stage large-angle hydraulic shock absorber assembly that can significantly improve damping effect, reduce component wear, extend service life, and reduce maintenance costs.

[0006] Therefore, the technical solution of the present invention is a multi-stage large-angle hydraulic vibration damper assembly, comprising a large-angle vibration damping system and a hydraulic vibration damping system, wherein the large-angle vibration damping system and the hydraulic vibration damping system are fixedly connected, and a mounting plate is fixedly provided on the outer edge of the large-angle vibration damping system; the large-angle vibration damping system is provided with a vibration damping spring, the vibration damping spring is disposed in a lubrication cavity, the lubrication cavity is provided with lubricating grease, and the hydraulic vibration damping system is provided with a vibration damping cavity, the vibration damping cavity is provided with liquid vibration damping grease.

[0007] The large-angle vibration damping system effectively reduces the torsional stiffness at the beginning of the transmission system through the damping spring, thereby reducing a certain natural frequency of the transmission system, changing the natural mode shape of the system, avoiding resonance caused by the main harmonic excitation of the engine torque, and improving the NVH characteristics of the whole vehicle; the liquid damping grease of the hydraulic vibration damping system increases the torsional damping of the transmission system, suppresses the amplitude of torsional resonance response, and attenuates the transient torsional vibration caused by impact.

[0008] Preferably, the large-angle vibration damping system includes a fixed base A, a cover plate A, and a dial. The vibration damping spring is located between the fixed base A and the cover plate A. A slide is provided on the outer side of the vibration damping spring. The dial is located between the fixed base A and the cover plate A, inside the vibration damping spring. The vibration damping spring is placed in the slide, which is filled with lubricating grease to effectively reduce friction and protect the vibration damping spring.

[0009] Preferably, the hydraulic vibration damping system includes a fixed base B, a cover plate B, and a rotating disk. The cover plate B, the fixed base B, and the rotating disk together form the damping cavity, with the rotating disk located between the fixed base B and the cover plate B. Preferably, the hydraulic vibration damping system also includes a limiting block and a rotating block. The rotating block is fixedly mounted on the rotating disk. The large-angle vibration damping system and the hydraulic vibration damping system are fixed together by a connecting pin. The limiting block is located on both sides of the connecting pin, limiting the extreme rotation angle of the large-angle vibration damping system and preventing premature damage due to fatigue of the damping springs within the large-angle vibration damping system.

[0010] Preferably, the rotating block is provided with an oil hole, and liquid damping grease is injected into the damping cavity. The liquid damping grease flows in the oil hole as the rotating disk rotates, which increases the torsional damping of the transmission system, suppresses the amplitude of torsional resonance response, and attenuates the transient torsional vibration caused by impact.

[0011] Preferably, damping structures are provided on both sides of the dial and both sides of the rotating disk. The damping structure on one side is located in the groove, and the damping structure on the other side is pressed and fixed by a disc spring or elastic element to form a damper together and reduce the overflow of lubricating grease or liquid damping grease.

[0012] The damping structure includes damping structure A located on both sides of the dial and damping structure B located on both sides of the rotating disk. Damping structure A includes a cover plate damping pad and an elastic damping pad. The cover plate damping pad is located between the fixed base A and the dial, and the elastic damping pad is located between the dial and the cover plate A. Damping structure B includes a cover plate damping ring and an elastic damping ring. The cover plate damping ring is located between the cover plate B and the rotating disk, and the elastic damping ring is located between the rotating disk and the fixed base B. Disc springs or other elastic elements are provided between the cover plate A and the elastic damping pad, and between the fixed base B and the elastic damping ring, for pressing and fixing the elastic damping pad or the elastic damping ring.

[0013] Preferably, the damping spring is one or more sets of arc springs, and the damping spring is in the form of a large spring surrounding a small spring. The large spring and the small spring are of equal length or the large spring is longer than the small spring. By adjusting the length and diameter of the arc spring, a multi-level stiffness damping system can be realized. At the same time, it can also achieve an ultra-large torsional angle, better avoid torsional resonance of the transmission system, and mitigate impact.

[0014] Preferably, an O-ring is provided between the cover plate B and the fixed seat B, and the stops at both ends of the connecting pin that mate with the cover plate B and the fixed seat B are set at bevels. When the fixed seat B and the cover plate B are pressed and riveted together, a sealing space is formed between the fixed seat B and the cover plate B to prevent leakage of liquid damping grease.

[0015] Preferably, the rotating disk and the dial are riveted to both sides of the wheel hub by limiting pins.

[0016] Preferably, the fixing seat A is welded and fixed to the mounting plate.

[0017] The beneficial effects of this invention are that it combines two damping systems, a large-angle damping system and a hydraulic damping system, to effectively reduce the transmission of torsional vibration from the engine to the transmission or motor, thereby reducing the vibration and noise of the power transmission or power conversion system and improving driving comfort. At the same time, the large-angle damping system can completely filter out the imbalance in the low-speed range of the engine, which makes it possible to reduce the overall speed and make the engine mainly operate in the low-speed range, thus improving the fuel economy of the whole vehicle and extending its service life. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure along the AA direction; Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along the BB direction.

[0019] Explanation of symbols in the diagram: 1. Mounting plate; 2. Dial; 3. Damping spring; 4. Cover plate B; 5. O-ring seal; 6. Fixing seat B; 7. Fixing seat A; 8. Cover plate A; 9. Connecting pin; 10. Limiting pin; 11. Rotating disc; 12. Limiting block; 13. Rotating block; 14. Hub; 15. Elastic damping pad; 16. Cover plate damping pad; 17. Slide rail; 18. Elastic damping ring; 19. Cover plate damping ring; 20. Spring pad; 21. Damping chamber; 22. Lubrication chamber. Detailed Implementation

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

[0021] like Figure 1-3As shown, a multi-stage large-angle hydraulic vibration damper assembly includes a large-angle vibration damping system and a hydraulic vibration damping system, which are fixed together by a connecting pin 9. The large-angle vibration damping system includes a damping spring 3, a fixed base A7, a cover plate A8, and a dial 2. The damping spring 3 is located in the lubrication cavity 22 between the fixed base A7 and the cover plate A8. The lubrication cavity 22 contains lubricating grease. The damping spring 3 consists of one or more sets of arc-shaped springs. Each set of damping springs uses a large spring surrounding a small spring. By adjusting the length and diameter of the arc-shaped springs in conjunction with the spring pads 20, multi-level stiffness damping systems such as level one, level two, and level four can be achieved: setting two sets of arc-shaped springs with the same length for both large and small springs can achieve level one stiffness damping; setting two sets of arc-shaped springs with a long long spring and a short short spring can achieve level two stiffness damping; setting four sets of arc-shaped springs with a long long spring and a short short spring can achieve level four stiffness damping. It can also achieve an ultra-large torsional angle (40°), better avoiding torsional resonance in the transmission system and mitigating impact. When multiple sets of arc-shaped springs are used in combination, spring pads 20 are placed between every two sets of arc-shaped springs.

[0022] The outer side of the arc spring is provided with a slide 17. The slide 17 is made of high-strength, high-toughness wear-resistant spring steel. Lubricating grease is filled in the slide 17, which can effectively reduce friction, protect the arc spring, and extend its service life.

[0023] The outer edge of the mounting base A7 of the large-angle vibration reduction system is welded and fixed to the mounting plate 1. The mounting plate 1 is connected to the flywheel. The size of the mounting plate 1 can be adjusted according to the size of the flywheel. The mounting plate 1 can be four pieces, or three, six or more pieces evenly distributed in the circumferential direction.

[0024] The hydraulic vibration damping system includes a fixed base B6, a cover plate B4, and a rotating disk 11. The cover plate B4, fixed base B6, and rotating disk 11 together form a damping cavity 21, which contains liquid damping grease. A dial 2 is located between the fixed base A7 and the cover plate A8, inside the damping spring 3. Damping structures A are located on both sides of the dial 2, used for vibration damping and preventing lubricating grease from overflowing into the lubrication cavity 22. The rotating disk 11 is located between the fixed base B6 and the cover plate B4. Damping structures B are located on both sides of the rotating disk 11, used for vibration damping and preventing liquid damping grease from overflowing into the damping cavity 21.

[0025] Damping structure A includes a cover plate damping pad 16 and an elastic damping pad 15. The cover plate damping pad 16 is located between the fixed seat A7 and the dial 2, and the elastic damping pad 15 is located between the dial 2 and the cover plate A8. Damping structure B includes a cover plate damping ring 19 and an elastic damping ring 18. The cover plate damping ring 19 is located between the cover plate B4 and the rotating disk 11, and the elastic damping ring 18 is located between the rotating disk 11 and the fixed seat B6. Disc springs or other elastic elements are provided between the cover plate A8 and the elastic damping pad 15, and between the fixed seat B6 and the elastic damping ring 18, to press and fix the elastic damping pad 15 or the elastic damping ring 18. The cover plate damping pad 16 and the cover plate damping ring 19 are respectively fixed in the grooves of the dial 2 and the rotating disk 11. An O-ring 5 is provided between the cover plate B4 and the fixed seat B6. The ends of the connecting pin 9 that mate with the cover plate B4 and the fixed seat B6 are set at bevels. Both the O-ring 5 and the beveled fit are used to prevent the liquid damping grease from overflowing.

[0026] The hydraulic damping system also includes a limiting block 12 and a rotating block 13. The rotating block 13 is fixedly mounted on the rotating disk 11, and the limiting block 12 is located on both sides of the connecting pin 9 to limit the extreme rotation angle of the large-angle damping system. The rotating block 13 has oil holes, and the liquid damping grease flows within these holes as the rotating disk 11 rotates. The rotation of the rotating disk 11 causes the liquid damping grease to flow within the oil holes, increasing the torsional damping of the transmission system, suppressing the amplitude of torsional resonance response, and attenuating transient torsional vibration caused by impact. The large-angle damping system achieves its extreme rotation angle through the damping spring 3. The limiting block 12 of the hydraulic damping system limits the extreme rotation angle of the damper within a certain range, preventing fatigue or premature damage to the damping spring 3 due to excessive force.

[0027] The dial 2 and the rotating disc 11 are riveted to both sides of the wheel hub 14 via limiting pins 10. Through the synergistic effect of multi-stage stiffness spring damping and damping structure, the torsional vibration of the engine is effectively reduced from being transmitted to the transmission or motor, thereby reducing the vibration and noise of the power transmission or power conversion system and improving driving comfort. At the same time, the multi-stage large-angle torsional damper can completely filter out the imbalance in the low-speed range of the engine, which makes it possible to reduce the overall speed and make the engine mainly operate in the low-speed range, thus improving the fuel economy of the whole vehicle and extending its service life.

[0028] This application combines two vibration damping systems: a large-angle damping system and a hydraulic damping system. The large-angle damping system, through the use of damping springs 3, can effectively reduce the torsional stiffness at the beginning of the transmission system, thereby reducing a certain natural frequency of the transmission system ("certain natural frequency" refers to the natural vibration frequency of a vibration system in the nth mode), changing the system's natural mode shape, and avoiding resonance caused by the excitation of the engine torque principal harmonic, thus improving the overall NVH characteristics of the vehicle. The hydraulic damping system, through the application of liquid damping grease, increases the torsional damping of the transmission system, suppresses the amplitude of torsional resonance response, and attenuates transient torsional vibration caused by impact. The combined use of the two systems significantly improves the vehicle's vibration damping effect and comfort.

[0029] However, the above description is merely a specific embodiment of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A multi-stage large-angle hydraulic vibration damper assembly, characterized in that, The system includes a large-angle vibration damping system and a hydraulic vibration damping system, which are fixedly connected. The outer edge of the large-angle vibration damping system is fixedly provided with a mounting plate. The large-angle vibration damping system is provided with a damping spring, which is located in a lubrication chamber containing lubricating grease. The hydraulic vibration damping system is provided with a damping chamber containing liquid damping grease.

2. The multi-stage large-angle hydraulic vibration damper assembly according to claim 1, characterized in that, The large-angle vibration damping system includes a fixed base A, a cover plate A, and a dial. The damping spring is located between the fixed base A and the cover plate A. A slide is provided on the outer side of the damping spring. The dial is located between the fixed base A and the cover plate A, inside the damping spring.

3. The multi-stage large-angle hydraulic vibration damper assembly according to claim 2, characterized in that, The hydraulic vibration damping system includes a fixed base B, a cover plate B, and a rotating disk. The cover plate B, the fixed base B, and the rotating disk together form the vibration damping cavity, and the rotating disk is located between the fixed base B and the cover plate B.

4. The multi-stage large-angle hydraulic vibration damper assembly according to claim 3, characterized in that, The hydraulic vibration damping system is also provided with a limiting block and a rotating block. The rotating block is fixedly installed on the rotating disk. The large-angle vibration damping system and the hydraulic vibration damping system are fixed together by a connecting pin. The limiting block is located on both sides of the connecting pin.

5. The multi-stage large-angle hydraulic vibration damper assembly according to claim 4, characterized in that, The rotating block is provided with an oil hole, which is used to inject liquid damping grease into the damping cavity. The liquid damping grease flows in the oil hole as the rotating disk rotates.

6. The multi-stage large-angle hydraulic vibration damper assembly according to claim 3, characterized in that, Damping structures are provided on both sides of the dial and both sides of the rotating disk. The damping structure on one side is located in a groove, and the damping structure on the other side is pressed and fixed by a disc spring or elastic element. The damping structure includes damping structure A on both sides of the dial and damping structure B on both sides of the rotating disk. Damping structure A includes a cover plate damping pad and an elastic damping pad. The cover plate damping pad is located between the fixed base A and the dial, and the elastic damping pad is located between the dial and the cover plate A. Damping structure B includes a cover plate damping ring and an elastic damping ring. The cover plate damping ring is located between the cover plate B and the rotating disk, and the elastic damping ring is located between the rotating disk and the fixed base B. Disc springs or other elastic elements are provided between the cover plate A and the elastic damping pad, and between the fixed base B and the elastic damping ring, to press and fix the elastic damping pad or elastic damping ring.

7. The multi-stage large-angle hydraulic vibration damper assembly according to claim 1, characterized in that, The damping spring is one or more sets of arc springs, and the damping spring is in the form of a large spring enclosing a small spring. The large spring and the small spring are of equal length or the large spring is longer than the small spring.

8. The multi-stage large-angle hydraulic vibration damper assembly according to claim 3, characterized in that, An O-ring is provided between the cover plate B and the fixed seat B, and the stops at both ends of the connecting pin that mate with the cover plate B and the fixed seat B are set at bevels.

9. The multi-stage large-angle hydraulic vibration damper assembly according to claim 3, characterized in that, The rotating disk and the dial are riveted to both sides of the wheel hub by limiting pins.

10. The multi-stage large-angle hydraulic vibration damper assembly according to claim 2, characterized in that, The fixing seat A is welded and fixed to the mounting plate.

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