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Vehicle body modal excitation device

A vibration excitation device and modal technology, applied in the field of vehicles, can solve problems such as poor height adjustment flexibility, and achieve the effect of good height adjustment flexibility and highly flexible and adjustable height.

Inactive Publication Date: 2017-12-15
BEIJING AUTOMOBILE RES GENERAL INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The invention provides a vehicle body modal vibration device to solve the problem of poor height adjustment flexibility existing in the existing vehicle body modal vibration device

Method used

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  • Vehicle body modal excitation device
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Embodiment Construction

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0025] like figure 1 As shown, a vehicle body modal vibration excitation device includes a vibration excitation mechanism 1 and a bearing mechanism 2 .

[0026] The vibration excitation mechanism 1 includes a vibration exciter 11 and a force sensor 12 . The force sensor 12 is fixedly arranged on the top of the vibration exciter 11 , and the force sensor 12 is provided with a data line 13 electrically connected to the force sensor 12 .

[...

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Abstract

The invention provides a vehicle body modal excitation device, which comprises an excitation mechanism and a bearing mechanism, and is characterized in that the excitation mechanism comprises an exciter, the bearing mechanism comprises a bearing platform and a fixing platform, and the exciter is arranged on the bearing platform; at least two brackets are arranged between the bearing platform and the fixing platform, each bracket is formed by hinging a first support rod and a second support rod, a first end of the first support rod is hinged with the bearing platform, and a second end of the first support rod is slidably connected with fixing platform; a first end of the second support rod is hinged with the fixing platform; the surface, which faces towards the fixing platform, of the bearing platform is provided with fixing blocks, each fixing block is provided with a threaded rod in a penetrating manner, one end of the threaded rod is provided with a rocker, and the other end of the threaded rod is commonly connected with the second end of each second support rod through a connecting piece. The vehicle body modal excitation device has the advantage of good height adjustment flexibility.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a vehicle body modal vibration excitation device. Background technique [0002] With the development of science and technology, automobiles have been gradually integrated into daily life, and people have higher and higher requirements for automobile performance. NVH (Noise, Vibration and Harshness, noise, vibration and harshness) is the performance evaluation of automobiles. The main indicator, it can be directly perceived by consumers. The body mode is the main control index of automobile NVH, and unreasonable body mode will cause serious NVH problems. [0003] In order to improve the performance of the whole vehicle and reduce the cost of later development, it is necessary to test the vehicle body mode through the vibration excitation device. Since the excitation positions of different models are different, the height of the excitation device needs to be adjusted by increasi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/007G01M7/00
Inventor 徐猛李建窦志英杨腾健
Owner BEIJING AUTOMOBILE RES GENERAL INST
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