Torsional vibration absorber with excellent NVH (Noise Vibration and Harshness) performance, vibration absorber connecting structure and vehicle

A connection structure and vibration absorber technology, which is applied in the field of automobile transmission system, can solve the problems of insufficient NVH performance, high assembly difficulty, unfavorable limit, etc., and achieve the effect of improving NVH level, low cost and high positioning accuracy

Pending Publication Date: 2022-08-09
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. A flexible coupling is added to the transmission system, and the wire is wound between the two sleeves of the flexible coupling, which can buffer the excitation vibration of the transmission system. This optimization scheme has a good effect, but the cost is relatively high (the torsional

Method used

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  • Torsional vibration absorber with excellent NVH (Noise Vibration and Harshness) performance, vibration absorber connecting structure and vehicle
  • Torsional vibration absorber with excellent NVH (Noise Vibration and Harshness) performance, vibration absorber connecting structure and vehicle
  • Torsional vibration absorber with excellent NVH (Noise Vibration and Harshness) performance, vibration absorber connecting structure and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] like Figure 1 to Figure 7As shown, a torsional vibration absorber with excellent NVH performance includes a flange 41, a rubber 42, a pin 43 and an inertia ring 44. A rubber 42 is vulcanized between the flange 41 and the inertia ring 44 to form a whole. The pin 43 is assembled in the axial through hole of the rubber 42, and the cross section of the axial through hole is a long circular arc. coaxial.

[0056] One end of the flange 41 protruding from the rubber 42 is provided with a flange positioning surface 411 . The flange positioning surface 411 is partially provided with four flange mounting holes 412 along the circumferential direction for mounting the flange fork 31 . The dimensional accuracy of the flange positioning surface 411 is at least H7, and the number of flange mounting holes 412 is the same as the number of flange fork mounting holes 311 .

[0057] The rubber 42 includes a main spring 421, and the main spring 421 is provided with a plurality of axial t...

Embodiment 2

[0065] like figure 1 As shown, the power generated by the vehicle engine 1 is transmitted to the wheels 7 through the transmission 2 , the transmission shaft 3 , the torsional vibration absorber 4 , the parking brake 5 , and the rear axle 6 in sequence. Generally speaking, there is no parking brake 5 in the power train of a passenger car, and there is a parking brake 5 in the power train of a commercial vehicle; the engine 1 and the transmission 2, that is, the powertrain, have both vertical and horizontal positions.

[0066] This embodiment is a connection structure of a torsional vibration absorber, including a transmission shaft 3, a torsional vibration absorber 4, a parking brake 5, and a rear axle 6; 41 and the brake drum 51 of the parking brake 5 are connected by bolts, and the brake drum positioning surface 513 of the brake drum 51 is connected with the input flange 61 of the rear axle 6 .

[0067] like Figure 8 As shown, the flange fork 31 of the transmission shaft ...

Embodiment 3

[0076] A vehicle includes the torsional vibration absorber described in Embodiment 1.

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Abstract

The invention discloses a torsional vibration absorber with excellent NVH (Noise Vibration and Harshness) performance, a vibration absorber connecting structure and a vehicle. The torsional vibration absorber comprises a flange plate, rubber, a pin and an inertia ring, and the rubber is vulcanized between the flange plate and the inertia ring to form a whole; the pin is assembled in the axial through hole of the rubber and can roll in the axial through hole in the circumferential direction to limit the radial movement of the inertia ring, so that the inertia ring is coaxial with the flange plate; the rubber comprises a main spring, and a plurality of axial through holes and limiting structures are arranged on the main spring in the circumferential direction at intervals. The pin penetrates through an axial through hole in the main spring and is radially limited with the main spring; the limiting structure is a bidirectional limiting structure; the main spring is of a double-main-spring structure and is composed of two semicircular main spring units in a butt joint mode. Overload can be reliably prevented, the service life is prolonged, the structure is simple, functions are complete, cost is low, assembling is easy, vibration of a transmission system can be effectively reduced, and the NVH performance is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of automobile transmission systems, and in particular relates to a torsional vibration absorber with excellent NVH performance, a vibration absorber connecting structure and a vehicle. Background technique [0002] The excitation of the automobile transmission system mainly comes from the excitation of the engine, the impact of gear gnawing and the order excitation of the universal joint of the transmission shaft. When the torsional vibration frequency of the transmission system coincides with or is similar to the excitation frequency, the transmission system will generate torsional vibration, and the torsional vibration will be transmitted to the cab through the suspension, frame and other structures, resulting in roaring noise. [0003] For front-rear-drive vehicles, the transmission chain of the transmission system is long, and its first-order torsion frequency is low. In the common vehicle speed range, t...

Claims

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Application Information

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IPC IPC(8): F16F15/14F16F7/108
CPCF16F15/145F16F7/108F16F2222/08
Inventor 林小凤张益智李锋徐立辉赵峄桐刘越于东洋魏长城郝能伟袁亮
Owner CHINA FIRST AUTOMOBILE
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