A kind of automobile deviation frequency test device and automobile deviation frequency test method

A technology of testing device and testing method, which is applied in the direction of measuring device, vehicle testing, machine/structural component testing, etc., can solve the problems of high test work intensity, low efficiency, and inaccurate real-time measurement, etc. Small, convenience-enhancing, size-reducing effects

Active Publication Date: 2018-04-27
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an automobile bias frequency test device. The existing test device cannot accurately perform real-time measurement after the wheel load changes, the efficiency is low, and the test work intensity is high.

Method used

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  • A kind of automobile deviation frequency test device and automobile deviation frequency test method
  • A kind of automobile deviation frequency test device and automobile deviation frequency test method
  • A kind of automobile deviation frequency test device and automobile deviation frequency test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The automobile bias frequency testing device of the present embodiment, such as figure 1 , 2 , 3, including a base 1, the base 1 is formed by an upper surface and two pairs of oppositely arranged sides, the upper surface of the base 1 is a test table 11, and the test area of ​​the test table 11 is only for waiting Test the single wheel of the car to drive in; the test area is a groove arranged on the test table 11, and the load-bearing plate 4 for carrying the weight of the car to be tested is horizontally arranged in the groove, and the upper surface of the load-bearing plate 4 and the groove The notch is flush; the pressure sensor 3 for collecting the pressure signal of the load plate is arranged between the load plate 4 and the bottom of the groove; one side of the base 1 is used to drive a single wheel of the car to be tested on the load plate Slope surface 12, a side opposite to the slope surface 12 on the base 1 is a vertical surface 14 perpendicular to the test ...

Embodiment 2

[0040] The automobile bias frequency testing method of this embodiment is carried out on the flat ground of the stowage area, and specifically includes the following steps:

[0041] 1) Under the no-load state (only the driver), an acceleration sensor is arranged at the body of the car to be tested and the wheels, and the acceleration sensor is connected to the data acquisition device and the data processor of the peripherals;

[0042] 2) Place the vehicle to be tested on the flat ground in the loading area, and place a vehicle deviation frequency test device in front of each wheel of the vehicle to be tested (a total of four vehicle deviation frequency test devices are required for the vehicle deviation test process) , so that the slope surface is close to the bottom in front of the wheel; at the same time, install the limit baffle on the vertical surface;

[0043] Make each wheel of the car to be tested drive into the test area along the slope of the corresponding car deviati...

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Abstract

The invention discloses an automotive frequency-biasing testing apparatus and an automotive frequency-biasing testing method. The automotive frequency-biasing testing apparatus comprises a pedestal having an upper surface and two opposite side surfaces. The upper surface of the pedestal serves as a test board surface; and a test zone of the test board surface is used for accommodation of the only single driving wheel of a to-be-tested automobile; a bearing plate is arranged in the test zone horizontally; and a pressure sensor is arranged between the bearing plate and the test board surface. A gradient surface is arranged at one side of the pedestals; and one side surface, opposite to the gradient surface, of the pedestal is a vertical plane perpendicular to the test board surface and is used for realizing falling of the wheel of the to-be-tested automobile. According to the automotive frequency-biasing testing apparatus, load distribution situations of the front axle, the rear axle, and the single wheel can be controlled in real time; the influence on the inherent frequency of the suspension rack by the change of different sprung masses can be reflected precisely; and the precision of the frequency-biasing test can be improved. Because of the characteristic of high portability of the apparatus, measurement of automobiles with different types at different places and fields can be guaranteed; and the convenience of the frequency-biasing testing can be substantially improved.

Description

technical field [0001] The invention belongs to the technical field of automobile performance testing, and in particular relates to an automobile deviation frequency testing device and also relates to an automobile deviation frequency testing method. Background technique [0002] The natural frequency (bias frequency) of the car body and wheel parts is an important performance index of the ride comfort of the car. Different suspension stiffness, sprung and unsprung mass, and suspension damping are important parameters in the process of vehicle suspension performance matching. , the natural frequency of the body is directly determined by the suspension stiffness and sprung mass, and the damping ratio of the suspension is determined by the suspension stiffness, damping and sprung mass. Therefore, in order to ensure the ride comfort of the vehicle, the natural frequency of the vehicle body should be designed within a more appropriate range under no-load (only the driver), half-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H1/14G01M17/007
Inventor 秦涛叶帅李书伟张博强郭耀华樊金磊
Owner ZHENGZHOU YUTONG BUS CO LTD
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