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Vibration absorber with adjustable frequency installed on suspended support of automobile

A car suspension and bracket technology, applied in the field of shock absorbers, can solve problems such as time-wasting and cumbersome operations

Inactive Publication Date: 2011-07-13
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above process is cumbersome and time-consuming

Method used

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  • Vibration absorber with adjustable frequency installed on suspended support of automobile
  • Vibration absorber with adjustable frequency installed on suspended support of automobile
  • Vibration absorber with adjustable frequency installed on suspended support of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] Further illustrate structure of the present invention below in conjunction with accompanying drawing:

[0012] see figure 1 , the frequency adjustable vibration absorber is composed of a rubber spring and a mass block, including a base 1, a rubber block 2, a fixed weight block 3, a variable mass block 4, and a nut 5. The base 1 is fixed on the support of the transmission system with glue, the rubber block 2 and the base 1 are firmly pasted with glue, the lower end of the fixed mass block 3 and the rubber block 2 are firmly bonded with glue, and the upper end has a threaded rod. There are five variable mass blocks 4, which are installed on the threaded rods on the fixed mass block 3, increase or decrease according to actual needs, and are fixed on the fixed mass block 3 by nuts 5. The frequency of this dynamic vibration absorber can be adjusted to six frequencies for direct selection during testing.

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Abstract

The invention discloses an adjustable dynamic vibration absorber installed on a suspended support of an automobile. The vibration absorber comprises a base seat, a rubber block and a fixed mass block, wherein the rubber block is fixed on the base seat; and the fixed mass block is fixed on the rubber block. The vibration absorber is characterized in that the fixed mass block is provided with a threaded rod; the threaded rod is provided with at least two variable mass blocks; and the variable mass blocks are tightened and fixed through a nut cap at the upper end of the threaded rod. In the structure, the size pf the rubber block is not changed, namely the rigidity of the system is fixed; the frequency is changed through changing the number of the variable mass blocks. By the invention, the frequency of the dynamic vibration absorber can be adjusted into multiple frequencies and can be selected and used directly for the NVH (noise, vibration and harshness) test of a finished automobile, which is time saving, convenient and quick.

Description

technical field [0001] The invention belongs to the field of automobile NVH performance, and in particular relates to a vibration absorber. Background technique [0002] The dynamic shock absorber is installed on the suspension bracket of the car to reduce the vibration of the suspension, intake and exhaust, transmission and other components at a certain frequency. Usually it consists of a spring-damped mass main system and an additional spring-mass system. The main system is regarded as a single-degree-of-freedom system, and after the mass-spring system is added, the original single-degree-of-freedom system becomes a two-degree-of-freedom system. The response of the system also changes from the original single large peak to two small peaks, thereby reducing the vibration amplitude of the entire system. [0003] In the design of shock absorbers related to vehicle models, when it is determined that the vibration of the suspension is too large at a certain place (such as 420...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/00G01M17/007
Inventor 雷应锋艾传智向国信
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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