Damping device for main speed reducer assembly of rear axle of automobile

Abstract

The utility model discloses a damping device of an automobile rear axle main reducer assembly, which relates to the technical field of automobile spare parts, and comprises an assembly body, a flange is arranged on the assembly body, a damper is arranged on the flange, the damper is in interference fit with the flange, the damper comprises an inner sleeve, an elastic block and an inertia ring, the inner sleeve is in interference fit with the flange, the inner sleeve is connected with the elastic block, the elastic block is connected with the inertia ring, a reinforcing block is arranged on the outer wall of the elastic block, a reinforcing block is arranged on the inner wall of the inertia ring, and the two reinforcing blocks are connected through a nylon pin. The shock absorber is directly mounted on the flange of the assembly body in an interference fit manner, so that the shock absorber and the assembly body can be quickly mounted, the mounting efficiency is improved, the interference fit precision is higher, the shock absorption effect of the torsion shock absorber is improved, and the practicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a vibration reduction device for an automobile rear axle main reducer assembly. Background Art

[0002] The main reducer assembly is a key component of the drive axle assembly, which plays a role in reducing speed and increasing torque. The main reducer assembly of the rear axle of a traditional mid-sized car has the following characteristics: the reducer assembly consists of an active bevel gear assembly, a differential assembly and a reducer housing assembly; the reducer assembly usually has five bearings, including three active bevel gears and two differential assemblies; the differential assembly consists of left and right differential housings, differential gears and driven bevel gears. Affected by the vibration of the engine, the rear main reducer bracket will produce abnormal vibrations, and the noise caused by the vibration will be transmitted to the rear passenger compartment, causing discomfort to customers. In order to solve this problem, a torsional vibration damper is installed to reduce the vibration from the engine end. However, the torsional vibration damper used in the transmission system of the automobile chassis is mainly installed on the drive shaft of the front axle and the rear axle, and is connected to the flange of the power take-off or the rear main reducer through bolts. The assembly process is inconvenient to align the threaded holes and the thread assembly accuracy is not high.

[0003] For example, the publication number CN210531481 U disclosed a shock absorber mounting support and a shock absorber assembly on May 15, 2020. The shock absorber mounting support includes a support body and a rubber bushing, the interior of the support body forms a cylindrical chamber, the rubber bushing is arranged in the cylindrical chamber to divide the upper chamber and the lower chamber in the cylindrical chamber; the upper part of the support body is provided with a first through hole and an upper vent hole, and the lower part of the support body is provided with a second through hole and a lower vent hole; the support body is located on the outer periphery of the cylindrical chamber and is provided with a main cylindrical wall and a groove wall radially recessed outward from the main cylindrical wall, the outer ring of the rubber bushing is in contact with the main cylindrical wall, and a flow groove is formed between the groove wall and the outer ring of the rubber bushing. The shock absorber disclosed above has complicated installation steps during installation, the shock absorber installation accuracy is not high, the installation speed is slow, and the practicality is poor. Summary of the invention

[0004] The utility model aims to provide a vehicle rear axle main reducer assembly vibration reduction device with convenient and quick installation of the shock absorber and higher assembly precision. The utility model directly connects the shock absorber with the overall body through interference fit, thereby realizing quick connection between the shock absorber and the overall body, and the shock absorber installation precision is higher.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model to solve its technical problems is: a vibration damping device for a rear axle main reducer assembly of an automobile, comprising a main body, a flange is provided on the main body, a vibration damper is provided on the flange, the vibration damper and the flange have an interference fit, the vibration damper comprises an inner sleeve, an elastic block and an inertia ring, the inner sleeve and the flange have an interference fit, the inner sleeve is connected to the elastic block, the elastic block is connected to the inertia ring, a reinforcement block is provided on the outer wall of the elastic block, a reinforcement block is provided on the inner wall of the inertia ring, and the two reinforcement blocks are connected by a nylon pin.

[0006] As a further solution of the utility model, the elastic block is a rubber block.

[0007] As a further solution of the utility model, a second reinforcement groove is provided on the elastic block.

[0008] As a further solution of the utility model, a connecting bracket is provided on the overall body.

[0009] As a further solution of the utility model, the connecting bracket is connected to the assembly body by bolts, and a through hole is provided at the end of the connecting bracket.

[0010] As a further solution of the utility model, a first reinforcement groove is provided on the connecting bracket.

[0011] As a further solution of the present invention, the cross-section of the first reinforcement groove is a triangle.

[0012] The beneficial effects of the utility model are:

[0013] The vibration damper is directly installed on the flange of the overall body through interference fit, so that the vibration damper and the overall body can be quickly installed, thereby increasing the installation efficiency. The interference fit has higher precision, which improves the vibration reduction effect of the torsional vibration damper and is more practical.

[0014] When the total body vibrates, the inner sleeve vibrates driven by the flange, and then the elastic block between the inner sleeve and the inertia ring is deformed, and then the deformation of the elastic block absorbs or consumes the energy of the mechanical vibration of the total body, thereby reducing the amplitude and frequency of the vibration of the total body, thereby reducing the noise in the car cab and enhancing the customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of the vibration reduction device of the rear axle main reducer assembly of an automobile.

[0016] In the accompanying drawings: 1- overall body, 2- flange, 3- connecting bracket, 4- first reinforcement groove, 5- inner sleeve, 6- elastic block, 7- inertia ring, 8- nylon pin, 9- reinforcement block, 10- second reinforcement groove. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] The specific implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0019] like Figure 1 As shown, the automobile rear axle main reducer assembly vibration damping device comprises an overall body 1, the overall body 1 is provided with a flange 2, the flange 2 is provided with a shock absorber, the shock absorber and the flange 2 are interference fit, the automobile rear axle main reducer assembly vibration damping device is installed on the automobile, when the engine vibrates, the rear main reducer bracket will produce abnormal vibration, and the vibration reduction work is performed through the shock absorber.

[0020] When in use, the shock absorber is directly installed on the flange 2 of the overall body 1 through interference fit, so that the shock absorber and the overall body 1 can be quickly installed, thereby increasing the installation efficiency. The interference fit has higher precision, which improves the vibration reduction effect of the torsional vibration damper and is more practical.

[0021] Specifically, refer to Figure 1 The shock absorber includes an inner sleeve 5, an elastic block 6 and an inertia ring 7. The inner sleeve 5 is interference fit with the flange 2, the inner sleeve 5 is connected to the elastic block 6, and the elastic block 6 is connected to the inertia ring 7. When the overall body 1 vibrates, the inner sleeve 5 vibrates under the drive of the flange 2, and then the elastic block 6 between the inner sleeve 5 and the inertia ring 7 is deformed, and then the deformation of the elastic block 6 absorbs or consumes the energy of the mechanical vibration of the overall body 1, thereby reducing the amplitude and frequency of the vibration of the overall body 1, thereby reducing the noise in the car cab and enhancing customer experience. Specifically, the inner sleeve 5 is bonded to the elastic block 6 by vulcanization, and the inertia ring 7 is connected to the elastic block 6 by vulcanization.

[0022] A reinforcement block 9 is provided on the outer wall of the elastic block 6, and a reinforcement block 9 is provided on the inner wall of the inertia ring 7. The two reinforcement blocks 9 are connected by a nylon pin 8, and the elastic block 6 between the inner sleeve 5 and the inertia ring 7 is radially reinforced by the nylon pin 8. In this embodiment, the nylon pin 8 is clamped with the reinforcement block 9, and an arc groove cooperating with the nylon pin 8 is provided on the two reinforcement blocks 9.

[0023] The elastic block 6 is a rubber block, and the vibration reduction work of the elastic block 6 is achieved through the elasticity of the rubber.

[0024] The elastic block 6 is provided with a second reinforcement groove 10 to strengthen the strength of the elastic block 6 .

[0025] A connecting bracket 3 is provided on the main body 1, and the assembly panel 1 is installed on the vehicle body through the connecting bracket 3. In this embodiment, the connecting bracket 3 is wedge-shaped to increase the strength of the connecting bracket 3, and the larger end of the connecting bracket 3 is connected to the main body 1.

[0026] The connecting bracket 3 is connected to the main body 1 by bolts, and a through hole is provided at the end of the connecting bracket 3. The through hole at the end of the connecting bracket 3 is used for connecting with other parts.

[0027] The connecting bracket 3 is provided with a first reinforcement groove 4 , through which the connecting bracket 3 is reinforced and the weight of the connecting bracket 3 is reduced.

[0028] Specifically, the cross section of the first reinforcement groove 4 is a triangle, and the first reinforcement groove 4 is a through groove, which reduces the weight of the connection bracket 3 while increasing the strength of the connection bracket 3 .

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vibration reduction device for a rear axle main reducer assembly of an automobile, comprising an assembly body (1), characterized in that: The overall body (1) is provided with a flange (2), the flange (2) is provided with a vibration damper, the vibration damper and the flange (2) are interference fit, the vibration damper comprises an inner sleeve (5), an elastic block (6) and an inertia ring (7), the inner sleeve (5) and the flange (2) are interference fit, the inner sleeve (5) is connected to the elastic block (6), and the elastic block (6) is connected to the inertia ring (7); a reinforcement block (9) is provided on the outer wall of the elastic block (6), and a reinforcement block (9) is provided on the inner wall of the inertia ring (7), and the two reinforcement blocks (9) are connected via a nylon pin (8).

2. The vehicle rear axle main reducer assembly vibration reduction device according to claim 1, characterized in that: The elastic block (6) is a rubber block.

3. The vibration reduction device for the rear axle main reducer assembly of an automobile according to claim 2, characterized in that: The elastic block (6) is provided with a second reinforcement groove (10).

4. The vehicle rear axle main reducer assembly vibration reduction device according to any one of claims 1 to 3, characterized in that: A connecting bracket (3) is provided on the overall body (1).

5. The vibration reduction device for the rear axle main reducer assembly of an automobile according to claim 4, characterized in that: The connecting bracket (3) is connected to the main body (1) via bolts, and a through hole is provided at the end of the connecting bracket (3).

6. The vibration reduction device for the rear axle main reducer assembly of an automobile according to claim 5, characterized in that: The connecting bracket (3) is provided with a first reinforcement groove (4).

7. The vehicle rear axle main reducer assembly vibration reduction device according to claim 6, characterized in that: The first reinforcement groove (4) has a triangular cross-section.

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