Multi-stage composite torsional vibration damper

Abstract

The invention relates to a multistage composite torsional vibration damper and relates to the technical field of dampers, the torsional vibration damper comprises a combined hub, a belt wheel, an inertia ring and a first rubber ring which are coaxially arranged, the belt wheel and the first rubber ring are arranged on the outer side of the combined hub in a sleeving mode, and the inertia ring is arranged on the outer side of the first rubber ring in a sleeving mode; the outer side of the combined hub is sleeved with a vibration reduction disc, the vibration reduction disc is fixedly connected with the combined hub, the vibration reduction disc and the inertia ring are arranged at intervals in the axial direction of the vibration reduction disc, and a vibration reduction mechanism is arranged between the vibration reduction disc and the inertia ring; the vibration reduction mechanism comprises a vibration reduction part, the vibration reduction part comprises an abutting block, the abutting block is connected with the inertia ring, the outer side of the abutting block is sleeved with a vibration reduction rubber block, a vibration reduction groove is formed in the vibration reduction disc, and the vibration reduction rubber block is inserted into the vibration reduction groove; a first friction plate is arranged on the side, facing the inertia ring, of the damping rubber block, and the first friction plate and the inertia ring are arranged in a spaced mode. According to the torsional vibration damper, the heating amount of the damping rubber block and the first rubber ring can be reduced, and stable damping performance of the torsional vibration damper is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of vibration dampers, and in particular to a multi-stage composite torsional vibration damper. Background Art

[0002] When the engine is working, the periodic relative torsion between the cranks under the action of periodic torque changes is called torsional vibration, or torsional vibration for short. For torsional vibration, since the crankshaft is long, the frequency of the engine torque change is the same as or an integer multiple of the natural frequency of the crankshaft torsion, which will cause resonance, resulting in increased wear of the transmission mechanism, reduced engine power, and even crankshaft breakage. In order to reduce the torsional vibration of the crankshaft, modern automobile engines often install torsional vibration dampers at the front end of the crankshaft where the torsional amplitude is the largest.

[0003] At present, the most common torsional vibration damper is the rubber torsional vibration damper, which mainly includes a wheel hub, an elastic rubber layer and an inertia ring. Its working principle is based on the inertia phase difference principle. The wheel hub is rigidly connected to the front end of the crankshaft through a flange, serving as the power input end; the inertia ring, as a mass element, is bonded to the elastic rubber layer through a vulcanization process, forming the power output end and carrying the pulley function. When the crankshaft undergoes torsional vibration, the wheel hub produces angular displacement fluctuations with the crankshaft, while the inertia ring has a tendency to maintain a uniform rotation due to its own rotational inertia. This phase difference causes the elastic rubber layer between the two to produce periodic shear deformation. Under the action of alternating shear strain, the elastic rubber layer converts mechanical energy into heat energy through the viscoelastic hysteresis effect of the polymer chain, thereby effectively attenuating the torsional vibration energy.

[0004] With respect to the above-mentioned related technologies, the rubber torsional vibration damper has a simple structure, low cost and obvious vibration reduction effect. However, since the vibration reduction performance of the elastic rubber layer is affected by temperature and the elastic rubber layer will spontaneously generate heat during the vibration reduction process, when the vibration energy that the rubber torsional vibration damper needs to eliminate is large, the elastic rubber layer will generate a large amount of heat, causing the temperature of the elastic rubber layer to rise rapidly, thereby causing the vibration reduction performance of the rubber torsional vibration damper to decay. Summary of the invention

[0005] The present application provides a multi-stage composite torsional vibration damper, the purpose of which is to reduce the heat generated by the rubber layer during the vibration reduction process, thereby reducing the temperature rise rate of the rubber layer and ensuring the stability of the vibration reduction performance of the torsional vibration damper.

[0006] In the first aspect, the present application provides a multi-stage composite torsional vibration damper adopting the following technical solution: A multi-stage composite torsional vibration damper comprises a coaxially arranged combined wheel hub, a pulley, an inertia ring and a first rubber ring, wherein the pulley and the first rubber ring are both sleeved on the outer side of the combined wheel hub, and the inertia ring is sleeved on the outer side of the first rubber ring; a damping disc is sleeved on the outer side of the combined wheel hub, the damping disc is fixedly connected to the combined wheel hub, the damping disc is spaced apart from the inertia ring along its own axial direction, and a damping mechanism is arranged between the damping disc and the inertia ring; the damping mechanism comprises a damping member, the damping member comprises a resistance block, the resistance block is connected to the inertia ring, a damping rubber block is sleeved on the outer side of the resistance block, a damping groove is provided on the damping disc, and the damping rubber block is inserted into the damping groove; a first friction plate is arranged on the side of the damping rubber block facing the inertia ring, and the first friction plate is spaced apart from the inertia ring.

[0007] By adopting the above technical solution, the coordinated arrangement of the combined wheel hub, the pulley, the inertia ring and the first rubber ring can meet the basic structural requirements of the torsional vibration damper.

[0008] On this basis, the vibration damping plate and the vibration damping mechanism between the vibration damping plate and the inertia ring are arranged. When the torsional vibration damper is performing vibration reduction, the inertia ring and the combined wheel hub rotate relative to each other due to the inertia difference. At this time, the inertia ring drives the resistance block to squeeze the vibration damping rubber block in the corresponding vibration damping groove, causing the vibration damping rubber block to undergo shear deformation and extrusion deformation. The vibration damping rubber block and the first rubber ring cooperate to absorb part of the vibration reduction energy, thereby increasing the performance of the torsional vibration damper.

[0009] On this basis, as the vibration-damping rubber block deforms in the vibration-damping groove and expands, the deformed rubber will push the first friction plate to move toward the inertia ring. Therefore, when the vibration energy is large, the deformation of the vibration-damping rubber block will push the first friction plate to contact the inertia ring and cause relative friction, further consuming the vibration energy and enhancing the vibration reduction effect.

[0010] Therefore, the vibration energy that needs to be eliminated by the torsional vibration damper is relatively large. The first friction plate consumes part of the vibration energy through friction sliding, thereby reducing the vibration damping pressure of the vibration damping rubber block and the first rubber ring, thereby reducing the heat generated by the vibration damping rubber block and the first rubber ring. This can reduce the temperature rise rate of the first rubber ring and the vibration damping rubber block, thereby ensuring the stability of the vibration damping performance of the torsional vibration damper.

[0011] Optionally, a second rubber ring is sleeved on the outer side of the combined hub, and the pulley is sleeved on the outer side of the second rubber ring.

[0012] By adopting the above technical solution, a second rubber ring is added to the outer side of the combined wheel hub, and the pulley is set on the outer side of the second rubber ring. At this time, the pulley and the second rubber ring cooperate to form an additional vibration reduction level. The second rubber ring and the first rubber ring work together to achieve a multi-level vibration reduction effect, further improving the overall vibration reduction performance. At the same time, the second rubber ring can disperse the vibration energy and reduce the load of the first rubber ring, thereby extending the service life of the torsional vibration damper.

[0013] Optionally, the vibration damping mechanism also includes a thickening plate, which is arranged at the bottom of the vibration damping groove and is detachably connected to the bottom of the vibration damping groove; the thickness direction of the thickening plate is arranged along the depth direction of the vibration damping groove, the thickening plate is located between the vibration damping rubber block and the bottom of the vibration damping groove along its own thickness direction, and the vibration damping rubber block is in conflict with the thickening plate.

[0014] By adopting the above technical solution, the setting of the thickened plate can adjust the initial position of the vibration-damping rubber block in the vibration-damping groove, thereby changing the spacing distance between the first friction plate and the second friction plate.

[0015] When the thickening plate becomes thicker, the vibration-damping rubber block is compressed, causing the first friction plate to shift toward the second friction plate, narrowing the gap between the two and prompting the friction contact to be triggered earlier; conversely, reducing the thickness of the thickening plate can increase the gap between the first friction plate and the second friction plate, prompting the friction contact to be triggered later and reducing unnecessary friction losses.

[0016] Optionally, the thickened plate includes a plurality of superimposed sheets, the plurality of superimposed sheets are sequentially superimposed along a depth direction of the vibration-damping groove, and the plurality of superimposed sheets are detachably connected.

[0017] By adopting the above technical solution, the thickened plate is composed of a plurality of superimposed plates stacked in sequence along the depth direction of the vibration damping groove, and the superimposed plates are detachably connected. This design allows the thickness of the thickened plate to be flexibly adjusted according to actual needs, so that the initial position of the vibration damping rubber block in the vibration damping groove and the initial gap or initial contact pressure between the first friction plate and the second friction plate can be accurately controlled. In addition, by adjusting the number of superimposed plates, the first friction plate can be leveled, the assembly accuracy can be improved, and uneven friction can be avoided.

[0018] Optionally, a plurality of vibration damping members are provided, and the plurality of vibration damping members are evenly spaced in sequence along the circumference of the combined hub, and the plurality of vibration damping members are arranged in a circumferential manner.

[0019] By adopting the above technical solution, a number of vibration damping parts are evenly spaced and arranged in a circle along the circumference of the combined hub, which can ensure that the vibration damper has balanced vibration damping performance in all directions; at the same time, the evenly distributed vibration damping part design also helps to disperse vibration energy, avoid local overload, and improve the stability and reliability of the overall structure.

[0020] Optionally, the first friction plate is annular and is sleeved on the outer side of the combined wheel hub, and a plurality of the vibration-damping rubber blocks are connected to the first friction plate; a plurality of first clearance holes are opened on the first friction plate, and the first clearance holes are arranged in a one-to-one correspondence with the resistance blocks, and the resistance blocks are located in the corresponding first clearance holes, and the inner side wall of the first clearance hole is spaced apart from the outer side wall of the corresponding resistance block.

[0021] By adopting the above technical solution, the first friction plate is annular and sleeved on the outer side of the combined wheel hub, which enables the first friction plate to cover multiple vibration-damping rubber blocks. Several vibration-damping rubber blocks are connected to the first friction plate, ensuring that during the vibration reduction process, the deformation of the vibration-damping rubber blocks can push the first friction plate to move toward the inertia ring, so that when the vibration energy is large, the first friction plate contacts the inertia ring to generate sliding friction, thereby consuming part of the vibration energy.

[0022] The first clearance hole formed on the first friction plate corresponds to the resistance block one by one, and the inner wall of the first clearance hole and the outer wall of the resistance block are spaced apart, thereby ensuring the free movement of the resistance block during the vibration reduction process, avoiding the interference of the first friction plate with the movement path of the resistance block, and facilitating the installation and positioning of the first friction plate.

[0023] Optionally, a second friction plate is arranged between the first friction plate and the inertia ring, the second friction plate is connected to the inertia ring, and the first friction plate and the second friction plate are arranged in parallel and at intervals.

[0024] By adopting the above technical solution, the arrangement of the first friction plate and the second friction plate allows sliding friction to occur between the first friction plate and the second friction plate, thereby avoiding direct wear on the inertia ring and protecting the inertia ring.

[0025] Optionally, the second friction plate is detachably connected to the inertia ring.

[0026] By adopting the above technical solution, the detachable connection between the second friction plate and the inertia ring makes it easy to replace the second friction plate. After long-term use, if the second friction plate is severely worn due to friction, it can be replaced by simple disassembly and installation operations, thereby ensuring the continuous and effective vibration reduction performance of the torsional vibration damper.

[0027] Optionally, an auxiliary ring is provided at one end of the combined hub, and the auxiliary ring is coaxially and detachably connected to the combined hub; the inertia ring is located between the auxiliary ring and the vibration damping plate along its own axial direction, and the vibration damping mechanism is provided between the auxiliary ring and the inertia ring and between the vibration damping plate and the inertia ring.

[0028] By adopting the above technical solution, the vibration damping mechanisms are symmetrically arranged at the axial ends of the inertia ring. When the combined hub transmits torque fluctuations, the inertia ring and the vibration damping plate produce relative rotation, triggering the vibration damping mechanism between the inertia ring and the vibration damping plate to work; at the same time, the auxiliary ring is connected to the combined hub, and the inertia ring and the auxiliary ring produce relative rotation, so that the vibration damping mechanism between the auxiliary ring and the inertia ring responds synchronously, shares part of the vibration energy, improves the vibration damping effect, and increases the stability of the vibration damping work.

[0029] Optionally, two of the inertia ring and the first rubber ring are provided, and the two first rubber rings are both sleeved on the outside of the combined wheel hub. The inertia ring and the first rubber ring are provided in a one-to-one correspondence, and the inertia ring is sleeved on the outside of the corresponding first rubber ring, and the vibration damping plate is located between the two inertia rings along its own axial direction; the torsional vibration damper also includes a synchronous ring, which is sleeved on the outside of the inertia ring, and the two inertia rings are connected to the synchronous ring, a silicone oil cavity is formed on the inner side wall of the synchronous ring, the outer side wall of the combined wheel hub and between the two inertia rings, and the vibration damping plate is located in the silicone oil cavity.

[0030] By adopting the above technical solution, the arrangement of two first rubber rings and two inertia rings can achieve a two-stage vibration reduction effect and improve the overall vibration reduction capacity. The introduction of the synchronization ring enables the two inertia rings to move synchronously, avoiding unilateral overload and further enhancing the vibration reduction effect. In addition, the setting of the silicone oil cavity enables the torsional vibration damper to consume vibration energy by using the viscous damping of silicone oil, thus realizing the function of the silicone oil rubber torsional vibration damper.

[0031] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application can effectively absorb vibration energy and improve the multi-stage vibration reduction capability of the shock absorber by disposing the vibration reduction member in the vibration reduction mechanism and utilizing the shear deformation and extrusion deformation of the vibration reduction rubber block.

[0032] 2. In the present application, the first friction plate and the vibration-damping rubber block are arranged in coordination. When the vibration energy is large, the vibration-damping rubber block deforms to push the first friction plate to contact the inertia ring and generate sliding friction, and part of the vibration energy is consumed by frictional heat generation, thereby reducing the heat generated by the first rubber ring and the vibration-damping rubber block. This can reduce the temperature rise rate of the first rubber ring and the vibration-damping rubber block, thereby ensuring the stability of the vibration reduction performance of the torsional vibration damper.

[0033] 3. The present application forms a silicone oil chamber by setting up double inertia rings, thereby enabling the rubber torsion machine vibration damper to achieve a combination of multiple vibration reduction methods, so that the torsional vibration damper can effectively reduce vibration under various working conditions, thereby improving the applicability of the torsional vibration damper of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the torsional vibration damper of Example 1 of the present application.

[0035] Figure 2 It is a schematic cross-sectional structure diagram of the torsional vibration damper of Example 1 of the present application.

[0036] Figure 3 It is a schematic diagram of the partial cross-sectional structure of the torsional vibration damper of Example 2 of the present application.

[0037] Figure 4 yes Figure 3 Schematic diagram of the local enlarged structure of part A.

[0038] Figure 5 It is a schematic diagram of the explosion structure of the torsional vibration damper of Example 2 of the present application.

[0039] Figure 6 It is a schematic diagram of the overall structure of the inertia ring, the first rubber ring and the second friction plate of Example 2 of the present application.

[0040] Figure 7 It is a schematic diagram of the partial cross-sectional structure of the torsional vibration damper of Example 3 of the present application.

[0041] Figure 8 yes Figure 7 Schematic diagram of the local enlarged structure of part B.

[0042] Fig. 9 It is a schematic diagram of the overall structure of an outer hub with a thickened plate installed in Example 3 of the present application.

[0043] Fig.10 It is a schematic diagram of the overall structure of the torsional vibration damper of Example 4 of the present application.

[0044] Fig.11 It is a schematic diagram of the partial cross-sectional structure of the torsional vibration damper of Example 4 of the present application.

[0045] Fig.12 It is a schematic diagram of the overall structure of the torsional vibration damper of Example 5 of the present application.

[0046] Fig.13 It is a schematic diagram of the partial cross-sectional structure of the torsional vibration damper of Example 5 of the present application.

[0047] In the figure, 1. combined hub; 11. inner hub; 12. outer hub; 13. damping plate; 14. auxiliary ring; 2. pulley; 21. clearance ring groove; 3. inertia ring; 4. first rubber ring; 5. second rubber ring; 6. damping mechanism; 61. damping member; 611. abutment block; 612. damping rubber block; 6121. plug-in hole; 613. damping groove; 62. first friction plate; 621. first clearance hole; 63. second friction plate; 631. second clearance hole; 64. thickening plate; 641. superposition plate; 642. mounting bolt; 7. synchronization ring; 8. silicone oil chamber. DETAILED DESCRIPTION

[0048] The following is combined with Figure 1 -Attached Fig.13 , further details of this application are given.

[0049] Embodiment 1: A multi-stage composite torsional vibration damper, referring to Figure 1 and Figure 2 , including a combined hub 1, a pulley 2, an inertia ring 3, a first rubber ring 4 and a second rubber ring 5. The combined hub 1, the pulley 2, the inertia ring 3, the first rubber ring 4 and the second rubber ring 5 are all coaxially arranged, the first rubber ring 4 and the second rubber ring 5 are both sleeved on the outside of the combined hub 1, the inertia ring 3 is sleeved on the outside of the first rubber ring 4, and the pulley 2 is sleeved on the outside of the second rubber ring 5.

[0050] Reference Figure 2 The combined wheel hub 1 comprises an inner wheel hub 11 and an outer wheel hub 12. The inner wheel hub 11 and the outer wheel hub 12 are coaxially detachably connected, and the outer wheel hub 12 is sleeved on the outer side of the inner wheel hub 11. The outer side wall of the inner wheel hub 11 is spaced apart from the inner side wall of the outer wheel hub 12. In this embodiment, the inner wheel hub 11 and the outer wheel hub 12 are connected by a plurality of bolts.

[0051] Reference Figure 2 The first rubber ring 4 is sleeved on the outer side of the outer hub 12, and the inertia ring 3 is sleeved on the outer side of the outer hub 12; the second rubber ring 5 is sleeved on the outer side of the inner hub 11, and the pulley 2 is sleeved on the outer side of the inner hub 11. The pulley 2 has a clearance ring groove 21 on one end surface facing the inertia ring 3. The clearance ring groove 21 is coaxially arranged with the pulley 2. The outer hub 12 is plugged into the clearance ring groove 21. The outer hub 12 is spaced apart from the inner side wall of the clearance ring groove 21, and the first rubber ring 4 and the inertia ring 3 are both located in the clearance ring groove 21.

[0052] The implementation principle of the embodiment of the present application is: the first rubber ring 4 cooperates with the second rubber ring 5 to form a two-stage parallel torsional vibration damper, thereby improving the vibration reduction effect of the torsional vibration damper.

[0053] Embodiment 2: A multi-stage composite torsional vibration damper, referring to Figure 3 and Figure 4The difference between this embodiment and the first embodiment is that a damping plate 13 is sleeved on the outer side of the outer hub 12, the damping plate 13 is coaxially fixedly connected with the outer hub 12, and the damping plate 13 is located in the clearance ring groove 21. In this embodiment, the damping plate 13 and the outer hub 12 are integrally formed.

[0054] Reference Figure 3 and Figure 4 The vibration damping disc 13 is coaxially arranged with the inertia ring 3 along its own axis and spaced apart therefrom, and a vibration damping mechanism 6 is arranged between the vibration damping disc 13 and the inertia ring 3 .

[0055] Reference Figure 4 and Figure 5 The vibration damping mechanism 6 includes a plurality of vibration damping members 61 , which are evenly spaced along the circumference of the vibration damping plate 13 , and are arranged in a circumferential pattern.

[0056] Reference Figure 4 and Figure 5 The vibration damping member 61 includes a resistance block 611, which is located on the side of the inertia ring 3 facing the vibration damping plate 13, and the resistance block 611 is fixedly connected to the inertia ring 3, and a vibration damping rubber block 612 is sleeved on the outer side of the resistance block 611. A vibration damping groove 613 is provided on the side of the vibration damping plate 13 facing the inertia ring 3, and the vibration damping rubber block 612 is inserted into the inertia ring 3.

[0057] When the torsional vibration damper is working, the inertia ring 3 and the outer hub 12 rotate relative to each other due to the inertia difference. The inertia ring 3 drives the resistance block 611 to squeeze the vibration-damping rubber block 612 in the corresponding vibration-damping groove 613, causing the vibration-damping rubber block 612 to undergo shear deformation and extrusion deformation. Therefore, the vibration-damping rubber block 612 can absorb vibration energy and realize the vibration reduction function.

[0058] Reference Figure 4 and Figure 5 In this embodiment, the vibration-damping rubber block 612 is in the shape of a long strip. The length direction of the vibration-damping rubber block 612 is arranged along the circumference of the vibration-damping disk 13. The vibration-damping rubber block 612 is provided with a plug-in hole 6121 along the middle of its length, and the abutment block 611 is plugged into the corresponding plug-in hole 6121.

[0059] Since the inertia ring 3 and the outer hub 12 rotate relative to each other during vibration reduction, the abutment block 611 mainly moves along the circumferential direction of the inertia ring 3. Therefore, the length direction of the vibration reduction rubber block 612 is arranged along the axial direction of the vibration reduction disk 13, which ensures that the vibration reduction rubber block 612 has sufficient vibration reduction length for the abutment block 611, thereby ensuring the vibration reduction effect.

[0060] Reference Figure 4 and Figure 5The vibration reduction mechanism 6 also includes a first friction plate 62, which is sleeved on the outside of the outer hub 12, is annular, and is coaxially arranged with the outer hub 12. The inner wall of the first friction plate 62 is spaced apart from the outer hub 12. The first friction plate 62 is located between the vibration reduction disk 13 and the inertia ring 3 along its own axial direction. One axial side of the first friction plate 62 is connected to a plurality of vibration reduction rubber blocks 612, and the other side is spaced apart from the inertia ring 3.

[0061] During vibration reduction, the abutment block 611 squeezes the vibration reduction rubber block 612 to deform. Under the limit of the vibration reduction groove 613, the vibration reduction rubber block 612 expands and deforms. At this time, the vibration reduction rubber block 612 pushes the first friction plate 62 to move along its own axis toward the inertia ring 3. When the vibration energy is large, the deformation of the vibration reduction rubber block 612 is large. At this time, the first friction plate 62 contacts the inertia ring 3 and generates relative friction. At this time, part of the vibration energy can be consumed through friction.

[0062] Reference Figure 4 and Figure 5 The first friction plate 62 is provided with a plurality of first clearance holes 621, and the first clearance holes 621 are arranged one by one corresponding to the abutment blocks 611. The abutment blocks 611 are inserted into the corresponding first clearance holes 621, and the outer wall of the abutment blocks 611 is spaced from the inner wall of the corresponding first clearance holes 621. In this embodiment, the inner diameter of the first clearance holes 621 needs to be smaller than the length of the vibration-damping rubber block 612, and the size of the first clearance holes 621 needs to be larger than the maximum movement distance of the abutment blocks 611 during vibration reduction.

[0063] The opening of the first clearance hole 621 ensures that the first friction plate 62 will not interfere with the movement of the resistance block 611 .

[0064] In this embodiment, the first friction plate 62 and the vibration-damping rubber block 612 are bonded by glue or connected by bolts or pins.

[0065] Reference Figure 4 and Figure 6 A second friction plate 63 is disposed on the side of the inertia ring 3 facing the damping plate 13. The second friction plate 63 is detachably connected to the inertia ring 3 and is coaxially spaced apart from the first friction plate 62. In this embodiment, the second friction plate 63 is bonded to the inertia ring 3 by glue or connected by bolts or pins.

[0066] Reference Figure 4 and Figure 6 A plurality of second easing holes 631 are formed on the second friction plate 63 . The second easing holes 631 are arranged in one-to-one correspondence with the abutment blocks 611 . The abutment blocks 611 are inserted into the corresponding second easing holes 631 .

[0067] The first friction plate 62 cooperates with the second friction plate 63 so that sliding friction occurs between the first friction plate 62 and the second friction plate 63, which can prevent damage to the inertia ring 3. At the same time, since the first friction plate 62 and the second friction plate 63 are easy to replace, it is convenient for the torsional vibration damper to be used for a long time.

[0068] The implementation principle of the embodiment of the present application is as follows: during vibration reduction, the inertia ring 3 and the combined hub 1 rotate relative to each other due to the inertia difference, and the inertia ring 3 drives the resistance block 611 to squeeze the vibration-damping rubber block 612 in the corresponding vibration-damping groove 613, causing the vibration-damping rubber block 612 to undergo shear deformation and extrusion deformation. At this time, the vibration-damping rubber block 612, the first rubber ring 4 and the second rubber ring 5 work together to achieve a multi-stage vibration reduction function.

[0069] On this basis, since the vibration-damping rubber block 612 is deformed in the vibration-damping groove 613 and the vibration-damping rubber block 612 expands, the vibration-damping rubber block 612 will push the first friction plate 62 to contact the second friction plate 63, and then the first friction plate 62 and the second friction plate 63 rotate relative to each other to generate sliding friction. At this time, the heat generated by the sliding friction can consume part of the energy of the torsional vibration, and at this time, the "rubber viscoelastic damping + friction Coulomb damping" synergistic vibration reduction can be achieved.

[0070] When in low-frequency vibration condition, the vibration amplitude is small, the deformation of the vibration-damping rubber block 612 is small, the first friction plate 62 and the second friction plate 63 are not in contact or are in light contact, and the vibration energy is mainly absorbed by the vibration-damping rubber block 612, the first rubber ring 4 and the second rubber ring 5 in a coordinated manner. At this time, the vibration-damping rubber block 612, the first rubber ring 4 and the second rubber ring 5 generate less heat and have a long service life.

[0071] When in high-frequency vibration condition, the vibration amplitude is large, the deformation of the vibration-damping rubber block 612 is large, the first friction plate 62 and the second friction plate 63 are pressed against each other and relative friction occurs. At this time, the first friction plate 62 and the second friction plate 63 consume part of the vibration energy through friction sliding, thereby reducing the vibration-damping pressure of the vibration-damping rubber block 612, the first rubber ring 4 and the second rubber ring 5, thereby reducing the heat generated by the vibration-damping rubber block 612, the first rubber ring 4 and the second rubber ring 5, and extending the service life of the vibration-damping rubber block 612, the first rubber ring 4 and the second rubber ring 5.

[0072] Embodiment 3: A multi-stage composite torsional vibration damper, referring to Figure 7 and Figure 8The difference between this embodiment and the second embodiment is that the vibration damping mechanism 6 further includes a plurality of thickening plates 64, which are arranged one by one with the vibration damping rubber blocks 612, and the thickening plates 64 and the vibration damping rubber blocks 612 have the same shape, and the thickening plates 64 are inserted into the corresponding vibration damping grooves 613, and the thickness direction of the thickening plates 64 is arranged along the depth direction of the corresponding vibration damping grooves 613, and the thickening plates 64 are detachably connected to the groove bottom of the corresponding vibration damping grooves 613, and the thickening plates 64 are located between the corresponding vibration damping rubber blocks 612 and the groove bottom of the corresponding vibration damping grooves 613 along their own thickness direction, and the vibration damping rubber blocks 612 are in conflict with the corresponding thickening plates 64. In this embodiment, the thickening plates 64 are bonded to the vibration damping disc 13 by glue or connected by bolts.

[0073] The thickening plate 64 is added in the vibration-damping groove 613, which can change the initial position of the vibration-damping rubber block 612, and further change the spacing distance between the first friction plate 62 and the second friction plate 63. In addition, when the first friction plate 62 and the second friction plate 63 are initially in contact, the thickening plate 64 is added so that the vibration-damping rubber block 612 is initially in a compressed deformation state, which can change the resistance pressure between the first friction plate 62 and the second friction plate 63.

[0074] Reference Figure 8 and Fig. 9 The thickened plate 64 includes a plurality of superimposed sheets 641, which are stacked in sequence along the thickness direction thereof and bonded together by glue. In addition, through holes are provided on the superimposed sheets 641, and the through holes on the superimposed sheets 641 are connected in sequence. A mounting bolt 642 is provided between the superimposed sheets 641 and the bottom of the corresponding vibration-damping groove 613, and the mounting bolt 642 passes through the plurality of through holes and is screwed to the bottom of the side groove of the vibration-damping groove 613.

[0075] The thickening plate 64 is provided with a plurality of superimposed sheets 641 , so that the thickness of the thickening plate 64 can be changed by increasing or decreasing the number of superimposed sheets 641 , thereby facilitating adjustment of the initial position of the vibration-damping rubber block 612 .

[0076] The implementation principle of the embodiment of the present application is: by changing the thickness of the thickened plate 64 by increasing or decreasing the number of overlapping plates 641, the initial position of the vibration-damping rubber block 612 in the vibration-damping groove 613 is accurately adjusted, thereby controlling the initial gap or initial contact pressure between the first friction plate 62 and the second friction plate 63.

[0077] When the first friction plate 62 and the second friction plate 63 are arranged at an interval, when the thickening plate 64 is thickened, the vibration-damping rubber block 612 is pushed outward and compressed, and the first friction plate 62 is offset toward the second friction plate 63, thereby reducing the gap between the first friction plate 62 and the second friction plate 63 and triggering the friction contact earlier; when the thickening plate 64 is thinned, the vibration-damping rubber block 612 retreats, and the gap between the first friction plate 62 and the second friction plate 63 is increased, thereby triggering the friction contact later and reducing unnecessary friction loss.

[0078] When the first friction plate 62 and the second friction plate 63 are in contact, the thickened plate 64 is thickened to increase the pre-compression of the vibration-damping rubber block 612, thereby improving the contact pressure between the first friction plate 62 and the second friction plate 63 and enhancing the vibration-damping performance under high-frequency vibration conditions. On the contrary, when the thickened plate 64 is thinned, the pre-tightening force between the first friction plate 62 and the second friction plate 63 is reduced to avoid excessive wear under low-frequency vibration conditions.

[0079] In addition, the first friction plate 62 is leveled by adding or removing the overlapping plates 641 , thereby improving the assembly accuracy of the first friction plate 62 and preventing uneven friction between the first friction plate 62 and the second friction plate 63 .

[0080] Embodiment 4: A multi-stage composite torsional vibration damper, referring to Fig.10 and Fig.11 The difference between this embodiment and embodiment 2 is that an auxiliary ring 14 is further provided, the auxiliary ring 14 is located at one axial end of the inner hub 11, and the auxiliary ring 14 is detachably connected to the inner hub 11. In this embodiment, the auxiliary ring 14 is connected to the inner combined hub 1 by a plurality of bolts.

[0081] Reference Fig.10 and Fig.11 The auxiliary ring 14 is coaxially arranged with the vibration damping disk 13, and the auxiliary ring 14 is spaced apart from the vibration damping disk 13 along its own axial direction. The inertia ring 3 is located between the auxiliary ring 14 and the vibration damping disk 13 along its own axial direction, and a vibration damping mechanism 6 is also arranged between the auxiliary ring 14 and the vibration damping disk 13.

[0082] Based on the detachable connection between the auxiliary ring 14 and the inner hub 11, this facilitates the assembly and disassembly maintenance of the torsional vibration damper.

[0083] The implementation principle of the embodiment of the present application is as follows: by adding an auxiliary ring 14 coaxially arranged with the vibration damping plate 13, symmetrical vibration damping mechanisms 6 are set at both axial ends of the inertia ring 3. When the combined hub 1 transmits torque fluctuations, the inertia ring 3 and the vibration damping plate 13 rotate relative to each other, triggering the vibration damping mechanism 6 between the inertia ring 3 and the vibration damping plate 13 to work; at the same time, the auxiliary ring 14 is rigidly connected to the inner hub 11, and the inertia ring 3 and the auxiliary ring 14 rotate relative to each other, which makes the vibration damping mechanism 6 between the auxiliary ring 14 and the vibration damping ring respond synchronously and share part of the vibration energy, which can improve the vibration damping effect and increase the stability of the vibration damping work.

[0084] Example 5: A multi-stage composite torsional vibration damper, referring to Fig.12 and Fig.13 The difference between this embodiment and the second embodiment is that: two inertia rings 3 and two first rubber rings 4 are provided, the two first rubber rings 4 are sleeved on the outside of the outer hub 12, and the two first rubber rings 4 are arranged at intervals along the axial direction of the inner combined hub 1, the inertia rings 3 and the first rubber rings 4 are arranged one by one, and the inertia rings 3 are sleeved on the outside of the corresponding first rubber rings 4, the vibration damping plate 13 is located between the two inertia rings 3 along its own circumference, and a vibration damping mechanism 6 is provided between the vibration damping plate 13 and the two inertia rings 3.

[0085] Reference Fig.13 The torsional vibration damper also includes a synchronizer ring 7, which is inserted into the yield ring groove 21, and is sleeved on the outside of the two inertia rings 3, and the outer wall of the damping plate 13 is slidably connected to the inner wall of the synchronizer ring 7 or is spaced apart.

[0086] The synchronization ring 7 connects the two inertia rings 3 into a whole, which makes the two inertia rings 3 move synchronously. Therefore, during vibration reduction, the two first rubber rings 4 and the two vibration reduction mechanisms 6 can work synchronously to improve the vibration reduction capability.

[0087] Reference Fig.13 , both inertia rings 3 are detachably connected to the synchronization ring 7. In this embodiment, the inertia ring 3 is connected to the synchronization ring 7 by a plurality of bolts.

[0088] Reference Fig.13 The two inertia rings 3 are arranged at intervals along their own axial direction, so that a silicone oil groove is formed between the two inertia rings 3, and the synchronizing ring 7 and the outer side wall of the outer hub 12 close the silicone oil groove to form a silicone oil cavity 8, and the damping plate 13 is located in the silicone oil cavity 8, and the silicone oil cavity 8 is filled with silicone oil. In this embodiment, the first rubber ring 4 closes the gap between the inner side wall of the corresponding inertia ring 3 and the outer side wall of the outer hub 12.

[0089] Due to the arrangement of the synchronization ring 7, a silicone oil cavity 8 is formed between the two inertia rings 3 to be filled with silicone oil, which can realize the function of a silicone oil torsional vibration damper, and consume vibration energy through the viscous damping of the silicone oil, thereby realizing the vibration reduction function.

[0090] The implementation principle of the embodiment of the present application is as follows: during vibration reduction, the inertia ring 3 and the combined wheel hub 1 rotate relative to each other due to the difference in inertia. At this time, the corresponding first rubber ring 4 and the vibration reduction mechanism 6 realize the vibration reduction work, and the two inertia rings 3 are under the action of the synchronization ring 7, and the synchronization ring 7 forces the two inertia rings 3 to move synchronously to balance the load distribution and avoid unilateral overload. On this basis, the silicone oil cavity 8 is filled with silicone oil. When the inertia ring 3 and the vibration damping plate 13 rotate relative to each other, the silicone oil is sheared to produce viscous resistance, and the vibration energy is consumed through fluid friction. At this time, the first rubber ring 4, the second rubber ring 5, the two vibration reduction mechanisms 6 and the silicone oil cooperate to realize the vibration reduction function, which enhances the vibration reduction effect; at the same time, by choosing whether to fill silicone oil, the selectivity of the vibration reduction function can be improved.

[0091] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A multi-stage composite torsional vibration damper, characterized in that: include: A combined wheel hub (1), a pulley (2), an inertia ring (3) and a first rubber ring (4) are coaxially arranged, wherein the pulley (2) and the first rubber ring (4) are both sleeved on the outside of the combined wheel hub (1), and the inertia ring (3) is sleeved on the outside of the first rubber ring (4); A vibration damping plate (13) is sleeved on the outer side of the combined wheel hub (1), the vibration damping plate (13) is fixedly connected to the combined wheel hub (1), the vibration damping plate (13) is spaced apart from the inertia ring (3) along its own axial direction, and a vibration damping mechanism (6) is provided between the vibration damping plate (13) and the inertia ring (3); The vibration damping mechanism (6) comprises a vibration damping member (61), the vibration damping member (61) comprises a resistance block (611), the resistance block (611) is connected to the inertia ring (3), a vibration damping rubber block (612) is sleeved on the outer side of the resistance block (611), a vibration damping groove (613) is formed on the vibration damping plate (13), and the vibration damping rubber block (612) is inserted into the vibration damping groove (613); A first friction plate (62) is provided on the side of the vibration-damping rubber block (612) facing the inertia ring (3), and the first friction plate (62) is spaced apart from the inertia ring (3).

2. The multi-stage composite torsional vibration damper according to claim 1, characterized in that: A second rubber ring (5) is sleeved on the outer side of the combined wheel hub (1), and the pulley (2) is sleeved on the outer side of the second rubber ring (5).

3. The multi-stage composite torsional vibration damper according to claim 1, characterized in that: The vibration damping mechanism (6) further comprises a thickening plate (64), wherein the thickening plate (64) is arranged at the bottom of the vibration damping groove (613), and the thickening plate (64) is detachably connected to the bottom of the vibration damping groove (613); The thickness direction of the thickened plate (64) is arranged along the depth direction of the vibration-damping groove (613); the thickened plate (64) is located between the vibration-damping rubber block (612) and the groove bottom of the vibration-damping groove (613) along its own thickness direction; and the vibration-damping rubber block (612) is in contact with the thickened plate (64).

4. The multi-stage composite torsional vibration damper according to claim 3, characterized in that: The thickened plate (64) comprises a plurality of stacked sheets (641), wherein the plurality of stacked sheets (641) are stacked in sequence along the depth direction of the vibration-damping groove (613), and the plurality of stacked sheets (641) are detachably connected.

5. The multi-stage composite torsional vibration damper according to claim 1, characterized in that: A plurality of the vibration damping members (61) are provided, and the plurality of the vibration damping members (61) are arranged in sequence at even intervals along the circumference of the combined hub (1), and the plurality of the vibration damping members (61) are arranged in a circumferential manner.

6. The multi-stage composite torsional vibration damper according to claim 5, characterized in that: The first friction plate (62) is annular and is sleeved on the outside of the combined wheel hub (1), and the plurality of vibration-damping rubber blocks (612) are all connected to the first friction plate (62); A plurality of first clearance holes (621) are formed on the first friction plate (62), the first clearance holes (621) and the abutment blocks (611) are arranged in a one-to-one correspondence, the abutment blocks (611) are located in the corresponding first clearance holes (621), and the inner side walls of the first clearance holes (621) are spaced apart from the outer side walls of the corresponding abutment blocks (611).

7. The multi-stage composite torsional vibration damper according to claim 6, characterized in that: A second friction plate (63) is arranged between the first friction plate (62) and the inertia ring (3); the second friction plate (63) is connected to the inertia ring (3); and the first friction plate (62) and the second friction plate (63) are arranged in parallel and at intervals.

8. The multi-stage composite torsional vibration damper according to claim 7, characterized in that: The second friction plate (63) is detachably connected to the inertia ring (3).

9. The multi-stage composite torsional vibration damper according to claim 1, characterized in that: An auxiliary ring (14) is provided at one end of the combined wheel hub (1), and the auxiliary ring (14) is coaxially detachably connected to the combined wheel hub (1); The inertia ring (3) is located between the auxiliary ring (14) and the vibration damping plate (13) along its own axial direction, and the vibration damping mechanism (6) is provided between the auxiliary ring (14) and the inertia ring (3) and between the vibration damping plate (13) and the inertia ring (3).

10. The multi-stage composite torsional vibration damper according to claim 1, characterized in that: Two of the inertia rings (3) and the first rubber rings (4) are provided, and the two first rubber rings (4) are sleeved on the outside of the combined wheel hub (1). The inertia rings (3) and the first rubber rings (4) are provided in a one-to-one correspondence, and the inertia rings (3) are sleeved on the outside of the corresponding first rubber rings (4), and the vibration damping plate (13) is located between the two inertia rings (3) along its own axial direction; The torsional vibration damper further comprises a synchronizing ring (7), the synchronizing ring (7) being sleeved on the outside of the inertia ring (3), and the two inertia rings (3) being connected to the synchronizing ring (7), a silicone oil cavity (8) being formed between the inner wall of the synchronizing ring (7), the outer wall of the combined wheel hub (1) and the two inertia rings (3), and the vibration damping plate (13) being located in the silicone oil cavity (8).

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