Vibration reduction block and front suspended crossbeam provided with same

Abstract

The invention discloses a vibration reduction block with conveniently regulated natural frequency and resonance amplitude and a front suspended crossbeam provided with the vibration reduction block. The vibration reduction block comprises a counter weight, a mounting base and a damping block made of elastic materials, wherein the damping block is installed between the counter weight and the mounting base, and the bottom of the mounting base is provided with a mounting bolt and a lock nut. The natural frequency of the front suspended crossbeam is the same as that of the vibration reduction block, and the natural frequency of the vibration reduction block is consistent with the resonance frequency of the front suspended crossbeam, such that a combination system consisting of the vibration reduction block and the front suspended crossbeam has two resonance frequencies which are respectively arranged on both sides of a resonance point of an original front suspended crossbeam when the vibration reduction block is not assembled, and the peak value of the combination system is smaller than the resonance peak value of the original front suspended crossbeam. Two new resonance frequencies and vibration amplitudes of the combination system can be adjusted by adjusting the mass and the natural frequency of the vibration reduction block, and the vibration frequency of an engine is avoided as far as possible, thus the purpose of reducing noise is realized.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to accessories at the front suspension beam of the automobile. Background technique [0002] With the development of the automobile industry, people have higher and higher requirements for various performances of automobiles, especially for ride comfort and NVH performance of vehicles. The main function of the front suspension beam of the car is to support the engine and reduce the transmission of road vibration. The front suspension beam must have sufficient strength to ensure that it will not be damaged under various harsh working conditions encountered during driving. At the same time, there must be enough rigidity to ensure that the relative positions of the major assemblies on it will not change greatly during driving. In order to alleviate the impact of the road surface and increase the comfort of the vehicle, the two ends of the front suspension ...

AI Technical Summary

Problems solved by technology

In order to alleviate the impact of the road surface and increase the comfort of the vehicle, the two ends of the front suspension beam are equipped with suspension cushions, which leads to a sudden reduction in the box-shaped cross-sectional area at both ends of the beam, thereby reducing the overall size of the front suspension beam. Mode, it is easy to cause resonance between the front suspension beam and the engine, causing the roar of the whole vehicle

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