Damping assembly for automobile belt pulley

Abstract

The utility model discloses a shock absorption assembly for an automobile belt pulley, which comprises an inner layer damping ring, and an inner composite supporting piece is fixed on the outer side wall of the inner layer damping ring. When the automobile belt pulley is used, the inner-layer damping ring made of high-damping nitrile rubber and the outer-layer buffering ring made of high-elasticity silicon rubber are respectively connected between the inner hub and the outer rim of the automobile belt pulley, so that the inner-layer damping ring is used for effectively absorbing high-frequency vibration of an engine between the inner hub of the automobile belt pulley and a driving shaft of the engine; low-frequency impact is buffered between the outer rim of the automobile belt pulley and the conveying belt through the outer-layer buffering ring, a middle elastic buffering mechanism is additionally installed between the inner composite supporting piece and the outer composite supporting piece, an air spring can generate elastic counter force through air in the air spring in a pressed mode, loads are supported, vibration energy is absorbed, and the vibration energy is effectively absorbed. Therefore, the device achieves multi-stage buffering protection, and the damping performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive pulley structure technology, specifically a shock-absorbing component for automotive pulleys. Background Technology

[0002] As a key component of the engine transmission system, the automotive pulley is mainly responsible for driving engine accessories and transmitting power. It is often installed between the engine drive shaft and the transmission belt and needs to withstand the periodic vibration and torque fluctuations generated by the engine operation. Therefore, in actual use, vibration damping components need to be installed on the outer rim and inner hub of the automotive pulley to reduce vibration and optimize the performance of the automotive pulley.

[0003] As disclosed in application number 202022674638.7, an automotive shock absorber pulley includes a pulley hub. A shaft hole is formed in the center of the pulley hub. A cavity coaxial with the shaft hole is formed on one side of the pulley hub. A shock absorber component one is provided on the side of the pulley hub near the cavity. A shock absorber component two is provided on the inner wall of the cavity. A shock absorber component three is provided on the outer side of the pulley hub. Two symmetrical fixing screw holes are formed on the front of the pulley hub. The beneficial effect of this utility model is that, through the shock absorber component one, the longitudinal vibration generated by the crankshaft can be transmitted to the rubber ring one through the pulley hub, thereby mitigating the longitudinal vibration. The damping ring 1 absorbs the bending vibration transmitted from the rubber ring 1 to the damping ring 2, enhancing the damping effect on longitudinal vibration. The damping component 2 transmits the bending vibration to the rubber ring 2 through the pulley hub. However, it still suffers from the problems of a single damping method and a simple damping structure. It only uses the elastic deformation of rubber for damping and protection, and can only absorb a portion of the vibration energy through the elastic deformation of rubber. The energy dissipation and damping effect is not good enough. Moreover, this type of flexible structure has poor rigidity, is prone to deformation, and has poor stability. Therefore, we propose a new type of damping component for automotive pulleys to improve the damping performance. Utility Model Content

[0004] The purpose of this invention is to provide a shock-absorbing component for automotive pulleys to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shock absorber assembly for automotive pulleys, comprising an inner damping ring, an inner composite support fixed to the outer wall of the inner damping ring, an intermediate elastic buffer mechanism uniformly fixed to the outer wall of the inner composite support, an outer composite support fixed to the outer wall of the intermediate elastic buffer mechanism, an outer buffer ring fixed to the outer wall of the outer composite support, an air guide arc-shaped pipe and an embedded fixing strip respectively provided on the inner and outer walls of the intermediate elastic buffer mechanism, and an air spring uniformly connected between the air guide arc-shaped pipe and the embedded fixing strip, and an arc-shaped rubber connecting strip and a titanium alloy connecting strip uniformly provided on both the outer and inner composite support, and a viscous damping cylinder and a piston assembly installed between adjacent titanium alloy connecting strips.

[0006] Preferably, the inner damping ring is made of high-damping nitrile rubber, and the outer buffer ring is made of high-elasticity silicone rubber.

[0007] Preferably, the arc-shaped rubber connecting strip and the titanium alloy connecting strip are distributed at equal angles on the outer composite support and the inner composite support, respectively.

[0008] Preferably, the inner wall of the inner damping ring is uniformly provided with second annular reinforcing ridges arranged at equal intervals, which increases the fixing area of ​​the inner surface of the inner damping ring and the inner hub of the automobile pulley during vulcanization connection by utilizing the second annular reinforcing ridges, thereby improving the firmness performance.

[0009] Preferably, the outer wall of the outer buffer ring is uniformly provided with first annular reinforcing protrusions arranged at equal intervals, which increases the fixing area of ​​the outer surface of the outer buffer ring and the outer rim of the automobile pulley during vulcanization connection by utilizing the first annular reinforcing protrusions, thereby improving the firmness performance.

[0010] Preferably, four viscous damping cylinders are provided, which are arranged at equal angles on the inner composite support. The piston assembly is slidably connected to the viscous damping cylinders, and a silicone rubber sealing ring is provided between the viscous damping cylinders and the piston assembly.

[0011] Preferably, a positioning block is fixed at one end of both the viscous damping cylinder and the piston assembly, a positioning slot matching the positioning block is provided on the titanium alloy connecting strip, and a screw is provided between the positioning block and the titanium alloy connecting strip.

[0012] Preferably, one end of the air guide arc tube is provided with a reserved air pipe, and a switch valve is installed on the reserved air pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The shock absorber for automotive pulleys optimizes its structure by installing internal composite support components. Internal composite support components and external composite support components are installed between the inner damping ring and the outer buffer ring, respectively. Both internal and external composite support components are set as a composite structure composed of flexible arc-shaped rubber connecting strips and rigid titanium alloy connecting strips. Combined with the telescopic structure composed of four viscous damping cylinders and piston assemblies that are equally distributed and installed between the titanium alloy connecting strips, the device can be supported and reinforced to prevent deformation, while providing viscous damping protection in the four directions of the device. Specifically, the viscous damping cylinder is filled with damping fluid such as silicone oil, and the piston body on the piston assembly has small holes or gaps. When the structure vibrates, the piston assembly slides in the viscous damping cylinder, forcing the damping fluid through the small holes to generate viscous resistance, thereby consuming energy. This gives the device different shock absorption methods and realizes all-round energy-consuming shock absorption protection.

[0015] (2) The vibration damping component for the automobile pulley is equipped with an outer buffer ring, which optimizes the performance of the device. On the one hand, an inner damping ring made of high-damping nitrile rubber and an outer buffer ring made of high-elasticity silicone rubber are connected between the inner hub and the outer rim of the automobile pulley. The inner damping ring effectively absorbs the high-frequency vibration of the engine between the inner hub of the automobile pulley and the engine drive shaft, and the outer buffer ring buffers the low-frequency impact between the outer rim of the automobile pulley and the transmission belt. On the other hand, an intermediate elastic buffer mechanism is installed between the inner composite support and the outer composite support between adjacent viscous damping cylinders. The air spring can generate elastic reaction force through the pressure of the gas inside, support the load and absorb vibration energy. Compared with common metal springs, this elastic buffer structure is not easily damaged and can be reused. The air pressure inside the air spring can be adjusted by opening the switch valve through the reserved air pipe to achieve different elastic support and buffering effects. This makes the device realize multi-level vibration protection and optimize vibration performance.

[0016] (3) The shock absorber assembly for automobile pulleys is equipped with positioning blocks, etc., so that when the device is used, on the one hand, the user can use the positioning and insertion structure formed by the positioning blocks and positioning slots, together with the locking and fixing effect of the screws, to independently disassemble and replace the energy-dissipating shock absorption protection structure formed by the viscous damping cylinder and piston assembly. This makes the device highly flexible and convenient for disassembling and maintaining the components. On the other hand, the second annular reinforcing convex strip increases the fixing area when the inner surface of the inner damping ring and the inner hub of the automobile pulley are vulcanized, improving the firmness performance. The first annular reinforcing convex strip increases the fixing area when the outer surface of the outer buffer ring and the outer rim of the automobile pulley are vulcanized, improving the firmness performance. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present invention;

[0018] Figure 2 This is a partial cross-sectional view of the external composite support component of this utility model.

[0019] Figure 3 This is a top view of the structure of this utility model;

[0020] Figure 4 This is a front view structural diagram of the intermediate elastic buffer mechanism of this utility model;

[0021] Figure 5 This is a front view structural diagram of the viscous damping hydraulic cylinder of this utility model.

[0022] In the diagram: 1. Outer composite support; 2. Inner composite support; 3. Viscous damping cylinder; 4. Inner damping ring; 5. Intermediate elastic buffer mechanism; 6. Outer buffer ring; 7. Positioning slot; 8. Arc-shaped rubber connecting strip; 9. Titanium alloy connecting strip; 10. First annular reinforcing convex strip; 11. Second annular reinforcing convex strip; 12. Embedded fixing strip; 13. Reserved air pipe; 14. Switch valve; 15. Air spring; 16. Arc-shaped air guide pipe; 17. Silicone rubber sealing ring; 18. Piston assembly; 19. Positioning insert. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figure 1-5 An embodiment of this utility model is provided: a shock absorber assembly for automotive pulleys, including an inner damping ring 4, an inner composite support 2 fixed to the outer wall of the inner damping ring 4, an intermediate elastic buffer mechanism 5 uniformly fixed to the outer wall of the inner composite support 2, an outer composite support 1 fixed to the outer wall of the intermediate elastic buffer mechanism 5, and an outer buffer ring 6 fixed to the outer wall of the outer composite support 1.

[0025] The inner and outer walls of the intermediate elastic buffer mechanism 5 are respectively provided with air guide arc pipes 16 and embedded fixing strips 12 that match the inner composite support 2 and the outer composite support 1, and air springs 15 are evenly connected between the air guide arc pipes 16 and the embedded fixing strips 12.

[0026] The inner wall of the inner damping ring 4 is uniformly provided with second annular reinforcing ridges 11 arranged at equal intervals, which increases the fixing area of ​​the inner surface of the inner damping ring 4 and the inner hub of the automobile pulley during vulcanization connection by utilizing the second annular reinforcing ridges 11, thereby improving the firmness performance.

[0027] The outer wall of the outer buffer ring 6 is uniformly provided with first annular reinforcing ridges 10 arranged at equal intervals, which increases the fixing area of ​​the outer surface of the outer buffer ring 6 and the outer rim of the automobile pulley during vulcanization connection by utilizing the first annular reinforcing ridges 10, thereby improving the firmness performance.

[0028] The inner damping ring 4 is made of high-damping nitrile rubber, and the outer buffer ring 6 is made of high-elasticity silicone rubber.

[0029] In use, an inner damping ring 4 made of high-damping nitrile rubber and an outer buffer ring 6 made of high-elasticity silicone rubber are connected between the inner hub and the outer rim of the car pulley, respectively. The inner damping ring 4 effectively absorbs the high-frequency vibration of the engine between the inner hub of the car pulley and the engine drive shaft, and the outer buffer ring 6 buffers the low-frequency impact load between the outer rim of the car pulley and the transmission belt.

[0030] Both the outer composite support 1 and the inner composite support 2 are uniformly provided with arc-shaped rubber connecting strips 8 and titanium alloy connecting strips 9, and a viscous damping cylinder 3 and a piston assembly 18 are installed between adjacent titanium alloy connecting strips 9.

[0031] The arc-shaped rubber connecting strip 8 and the titanium alloy connecting strip 9 are distributed at equal angles on the outer composite support 1 and the inner composite support 2, respectively.

[0032] Four viscous damping cylinders 3 are provided. The viscous damping cylinders 3 are arranged at equal angles on the inner composite support 2. The piston assembly 18 is slidably connected to the viscous damping cylinders 3, and a silicone rubber sealing ring 17 is provided between the viscous damping cylinders 3 and the piston assembly 18.

[0033] One end of the viscous damping cylinder 3 and the piston assembly 18 is fixed with a positioning block 19. The titanium alloy connecting strip 9 is provided with a positioning slot 7 that matches the positioning block 19. A screw is provided between the positioning block 19 and the titanium alloy connecting strip 9.

[0034] In use, the user can use the positioning plug-in structure composed of positioning plug 19 and positioning slot 7, together with the locking and fixing effect of screws, to independently disassemble and replace the energy-consuming shock-absorbing protection structure composed of viscous damping cylinder 3 and piston assembly 18. This makes the device highly flexible and convenient for disassembling and maintaining the components.

[0035] In use, an inner composite support 2 and an outer composite support 1 are installed between the inner damping ring 4 and the outer buffer ring 6, respectively. Both the inner composite support 2 and the outer composite support 1 are set as a composite structure composed of a flexible arc-shaped rubber connecting strip 8 and a rigid titanium alloy connecting strip 9 arranged in sequence. Combined with a telescopic structure consisting of four viscous damping cylinders 3 and piston assembly 18 arranged at equal angles and installed between the titanium alloy connecting strips 9, the device can be supported and reinforced to prevent deformation, while providing viscous damping protection in the four directions of the device. Specifically, the viscous damping cylinder 3 is filled with damping fluid such as silicone oil, and the piston body on the piston assembly 18 has small holes or gaps. When the structure vibrates, the piston assembly 18 slides in the viscous damping cylinder 3, forcing the damping fluid through the small holes to generate viscous resistance, thereby consuming energy. This gives the device different shock absorption methods and achieves all-round energy-consuming shock absorption protection.

[0036] One end of the air guide arc pipe 16 is provided with a reserved air pipe 13, and a switch valve 14 is installed on the reserved air pipe 13.

[0037] In this embodiment, the device is first vulcanized and connected between the inner hub and outer rim of the automotive pulley. Then, the automotive pulley with the elastic damping component is installed between the engine drive shaft and the transmission belt. Specifically, by connecting an inner damping ring 4 made of high-damping nitrile rubber and an outer buffer ring 6 made of high-elasticity silicone rubber between the inner hub and outer rim of the automotive pulley, the inner damping ring 4 effectively absorbs high-frequency engine vibration between the inner hub and the engine drive shaft, while the outer buffer ring 6 effectively absorbs high-frequency vibration between the outer rim and the transmission belt. The device buffers low-frequency impact loads. Simultaneously, by adding an inner composite support 2 and an outer composite support 1 between the inner damping ring 4 and the outer buffer ring 6, respectively, and both the inner composite support 2 and the outer composite support 1 are configured as a composite structure consisting of a flexible arc-shaped rubber connecting strip 8 and a rigid titanium alloy connecting strip 9 arranged sequentially, and further combined with a telescopic structure consisting of four viscous damping cylinders 3 and piston assemblies 18 equally distributed and installed between the titanium alloy connecting strips 9, the device can be supported and reinforced to prevent deformation while providing viscous damping protection in the four directions (up, down, left, and right). Specifically... The viscous damping cylinder 3 is filled with a damping fluid such as silicone oil, while the piston body of the piston assembly 18 has small holes or gaps. When the structure vibrates, the piston assembly 18 slides within the viscous damping cylinder 3, forcing the damping fluid through the small holes, generating viscous resistance, thereby consuming energy. This gives the device different damping methods, achieving comprehensive energy-consuming damping protection. In addition, an intermediate elastic buffer mechanism 5 is installed between the inner composite support 2 and the outer composite support 1 of adjacent viscous damping cylinders 3. The air spring 15 can generate elastic reaction force through the pressure of the gas inside, supporting the load and... This elastic buffer structure absorbs vibration energy and is less prone to damage than common metal springs, allowing for repeated use. Furthermore, by opening the switch valve 14 and adjusting the internal air pressure of the air spring 15 via the pre-installed air pipe 13, different elastic support and buffering effects can be achieved. Additionally, the user can utilize the positioning plug-in structure formed by the positioning plug 19 and positioning slot 7, along with the locking action of screws, to independently disassemble and replace the energy-dissipating and shock-absorbing protection structure composed of the viscous damping cylinder 3 and piston assembly 18. This makes the device highly flexible and facilitates component replacement and maintenance.

Claims

1. A shock-absorbing component for automotive pulleys, characterized in that, The device includes an inner damping ring (4), an inner composite support (2) is fixed to the outer wall of the inner damping ring (4), an intermediate elastic buffer mechanism (5) is uniformly fixed to the outer wall of the inner composite support (2), an outer composite support (1) is fixed to the outer wall of the intermediate elastic buffer mechanism (5), an outer buffer ring (6) is fixed to the outer wall of the outer composite support (1), an air guide arc pipe (16) and an embedded fixing strip (12) that match the inner composite support (2) and the outer composite support (1) are respectively provided on the inner and outer walls of the intermediate elastic buffer mechanism (5), and an air guide arc pipe (16) and an embedded fixing strip (12) are uniformly connected between the air guide arc pipe (16) and the embedded fixing strip (12), and an arc rubber connecting strip (8) and a titanium alloy connecting strip (9) are uniformly provided on the outer composite support (1) and the inner composite support (2), and a viscous damping cylinder (3) and a piston assembly (18) are installed between adjacent titanium alloy connecting strips (9).

2. The shock-absorbing assembly for an automotive pulley according to claim 1, characterized in that: The inner damping ring (4) is made of high-damping nitrile rubber, and the outer buffer ring (6) is made of high-elasticity silicone rubber.

3. The shock absorber assembly for an automotive pulley according to claim 1, characterized in that: The arc-shaped rubber connecting strip (8) and the titanium alloy connecting strip (9) are distributed at equal angles on the outer composite support (1) and the inner composite support (2), respectively.

4. A shock-absorbing assembly for automotive pulleys according to claim 1, characterized in that: The inner wall of the inner damping ring (4) is uniformly provided with second annular reinforcing protrusions (11) arranged at equal intervals.

5. A shock-absorbing assembly for an automotive pulley according to claim 1, characterized in that: The outer buffer ring (6) has first annular reinforcing ridges (10) evenly arranged at equal intervals on its outer side wall.

6. A shock-absorbing assembly for an automotive pulley according to claim 1, characterized in that: Four viscous damping cylinders (3) are provided. The viscous damping cylinders (3) are arranged at equal angles on the inner composite support (2). The piston assembly (18) is slidably connected to the viscous damping cylinder (3). A silicone rubber sealing ring (17) is provided between the viscous damping cylinder (3) and the piston assembly (18).

7. A shock-absorbing assembly for an automotive pulley according to claim 1, characterized in that: The viscous damping cylinder (3) and the piston assembly (18) are both fixed with a positioning block (19) at one end. The titanium alloy connecting strip (9) is provided with a positioning slot (7) that matches the positioning block (19). A screw is provided between the positioning block (19) and the titanium alloy connecting strip (9).

8. A shock-absorbing assembly for an automotive pulley according to claim 1, characterized in that: One end of the air guide arc pipe (16) is provided with a reserved air pipe (13), and a switch valve (14) is installed on the reserved air pipe (13).

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