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Heavy-duty double-wheel noise testing vehicle for tire-road noise testing

A noise testing and noise testing technology, applied to motor vehicles, measuring devices, measuring vibrations, etc., can solve problems such as complicated counterweight adjustment operations, difficulty in adapting to complex road conditions, and tire-road noise testing equipment being easily affected by the environment. The effect of saving manpower and material resources, simplifying the shape of the trailer, and quickly changing the tire load

Active Publication Date: 2021-07-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems that the existing tire-road noise test equipment is easily affected by the environment, the counterweight adjustment operation is complicated, and it is difficult to adapt to complex road conditions, and develops a weight-shifting double-sided tire-road noise test equipment. wheel noise detection vehicle

Method used

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  • Heavy-duty double-wheel noise testing vehicle for tire-road noise testing
  • Heavy-duty double-wheel noise testing vehicle for tire-road noise testing
  • Heavy-duty double-wheel noise testing vehicle for tire-road noise testing

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specific Embodiment approach 1

[0027] Specific Embodiment 1: The weight-shifting double-wheel noise detection vehicle used for tire-road noise testing in this embodiment includes a wheel set 1, a leaf spring 18, a square steel frame 116, a lifting device 2, a loading device 3, and a soundproof cover 4 and the data acquisition system, an axle is arranged between the two wheels to form a wheel set 1, and a leaf spring 18 is respectively arranged on the left and right sides of the axle, and the square steel frame 116 is horizontally arranged on the two leaf springs 18 through the support rod 17 Above; wherein the loading device 3 is composed of a square frame 31, a linear bearing 32, a linear transmission shaft 33, a ball screw 34 and a counterweight 35, and two linear transmission shafts 33 are placed horizontally inside the square frame 31 and a ball screw 34, the ball screw 34 is located between two linear transmission shafts 33 and arranged parallel to the linear transmission shafts 33, each linear transmis...

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment differs from Embodiment 1 in that an arc-shaped top cover 11 is provided outside the loading device 3 .

specific Embodiment approach 3

[0033] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the weight-shifting double-wheel noise detection vehicle used for tire-road noise testing also includes a guide device, and the guide device includes a traction bar 115, a support wheel 114 and Hydraulic telescopic link 113, one end of drawbar 115 is connected with square frame 31, and the other end of drawbar 115 is connected with traction vehicle, and hydraulic telescopic link 113 is vertically arranged on drawbar 115, and the bottom of hydraulic telescopic link 113 is provided with Support wheel 114.

[0034]The support wheels in this embodiment are used to support the car body, indoor short-distance transfer equipment and assist in the installation of the trailer frame on the tractor. adjust. In order to further adapt to different tractor heights, the drawbar is adjusted and fixed with a set screw. A trailer ball head 112 is installed on the top of the draw...

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Abstract

A weight-shifting double-wheel noise detection vehicle for tire-road noise testing. The invention relates to a near-field testing device for noise generated by outdoor tire-road interaction. It solves the problem of the existing tire-road noise testing equipment It is affected by the environment and the operation of counterweight adjustment is complicated. The weight-shifting double-wheel noise detection vehicle of the present invention is provided with two leaf springs on the axle, the square steel vehicle frame is arranged on the leaf springs, and the four leading screws of the lifting device are vertically arranged on the frame body of the square steel vehicle frame. The lug plate on the square frame is enclosed within on the leading screw, and described sound insulation cover is arranged on the periphery and the top of wheel group, and microphone is inserted from the outside of car body, is fixed on the square steel vehicle frame below, and microphone is positioned at the inboard of wheel. The invention realizes the control of the tire load by precisely moving the counterweight position through the ball screw, and adopts a single-axle double-wheel trailer structure similar to the actual vehicle, which is as close as possible to the vehicle running result and ensures the practicability of the test result.

Description

technical field [0001] The invention relates to near-field testing equipment for noise generated by outdoor tire-road interaction, in particular to a weight-shifting double-wheel noise testing vehicle for tire-road noise testing. Background technique [0002] Road noise includes power noise, vehicle body noise and tire-road noise, among which tire-road noise is the focus of road workers. Especially for the research on noise-reducing road surfaces, the evaluation of its noise-reducing performance must rely on a reliable tire-road noise test system. Since the noise reduction pavement is mainly to solve the problem of tire-road noise, the common traffic noise test method is no longer applicable. Therefore, the development of equipment that can objectively and truly reflect the noise generated by the tire-road interaction is of great significance to the research of noise reduction pavement. [0003] At present, there are two methods of near-field and far-field testing in outdoo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01H1/12B62D63/06
CPCB62D63/062G01H1/12
Inventor 谭忆秋杨斌邹晶晶肖神清孟安鑫曲元魁孙志棋邢超
Owner HARBIN INST OF TECH
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