An indoor test device and method for simulating car driving on road noise at micro-surface

A testing device and micro-surfacing technology, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc., can solve the problem of consuming a lot of manpower and material resources, and achieve the effect of saving resources and small errors

Active Publication Date: 2018-10-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that a large amount of manpower and material resources are needed to measure the noise outdoors on the road surface at the micro-surface, and the uncontrollable factors such as wind speed, background noise, and traffic flow have a certain influence on the measurement structure when testing the noise. Surface noise indoor test device and method

Method used

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  • An indoor test device and method for simulating car driving on road noise at micro-surface
  • An indoor test device and method for simulating car driving on road noise at micro-surface
  • An indoor test device and method for simulating car driving on road noise at micro-surface

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specific Embodiment approach 1

[0017] Specific implementation mode one: combine Figure 1 to Figure 4 Describe the present embodiment, the indoor test device for simulating the road noise of a car running on the micro-surface described in the present embodiment includes a base 1, a circular track 2, a test wheel 3, a horizontal shaft 4, a vertical shaft 5, a drive shaft 6, and a lifting vertical shaft. Shaft knob 7, driven gear 8, driving gear 9, hinged column foot 10 and motor 11, circular runway 2 are installed on the upper surface of base 1, engine 11 is installed in the base 1, and the lower end of drive shaft 6 passes through hinged column foot 10 is installed in the middle of the inner bottom surface of the base 1, the driven gear 8 is set on the drive shaft 6, the driving gear 9 is set on the rotating shaft of the engine 11, the driving gear 9 meshes with the driven gear 8, and the lower end of the vertical shaft 5 is lifted The vertical axis knob 7 is connected with the upper end of the drive shaft ...

specific Embodiment approach 2

[0030] Specific implementation mode two: combination Figure 1 to Figure 4 Illustrate this embodiment, a kind of simulated automobile driving described in this embodiment is in the circular runway 2 of indoor test device of road surface noise at the micro-surface place is the circular runway 2 that is made up of eight test molds 2-1, and the upper surface of base 1 is provided with An annular groove composed of eight grooves 1-1, each groove 1-1 is respectively embedded with a test mold 2-1. With such a setting, on the one hand, it is convenient to disassemble and install the micro-surface, and on the other hand, it can carry out noise tests on various micro-surfaces or other mixtures at the same time. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0031] Specific implementation mode three: combination Figure 1 to Figure 4 Describe this embodiment, a kind of simulated automobile running in this embodiment described in micro surface place road surface noise indoor testing device also comprises sound insulation cover 12, and sound insulation cover 12 is fastened on the circular runway 2, and the inner sidewall of sound insulation cover 12 bottoms and The outer wall of the top of the base 1 is screwed. The height of the soundproof cover 12 is 40cm. Before the test starts, the soundproof cover 12 is buckled on the circular runway 2, and the soundproof cover 12 is tightened, and the soundproof cover is located on the control knob. Do it down, also keep the control knob from being blocked. Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a device and a method for testing noise indoors by means of simulating driving of an automobile on a micro-surfacing road surface, and relates to a testing device and a testing method, in particular to the device and method for testing the noise indoors by means of simulating the driving of the automobile on the micro-surfacing road surface. The invention aims to solve the problems that a lot of manpower and material resources are necessarily consumed, and a measurement structure is affected by difficultly-controlled factors, such as wind speed, background noise, traffic flow and the like in a certain degree during the process of testing the noise of the micro-surfacing road surface outdoors. The device comprises a pedestal, a circular runway, a testing wheel, a transverse shaft, a vertical shaft, a driving shaft, a lifting vertical shaft rotary knob, a driven gear, a driving gear, a hinged column base and an engine, wherein the circular runway is arranged on the upper surface of the pedestal; the engine is arranged in the pedestal; the lower end of the driving shaft is arranged at the middle part of the inner bottom surface of the pedestal through the hinged column base; the driven gear is arranged on the driving shaft in a sheathing manner. The device and the method disclosed by the invention are applied to testing of the noise of the micro-surfacing road surface.

Description

technical field [0001] The invention relates to a testing device and a method, in particular to an indoor testing device and method for simulating a car running on a micro-surface road noise, belonging to the field of transportation. Background technique [0002] Micro-surfacing has good waterproof, anti-skid, wear-resistant and rut-filling functions, which can significantly improve the performance of the pavement, and its construction period is short, and the opening and traffic are fast. Compared with other pavement maintenance technologies, it has a greater Advantage. However, during the vigorous promotion and widespread use of micro-surfacing technology, people found that when vehicles are driving on roads with micro-surfacing, the noise inside and outside the vehicle is significantly higher than that of ordinary asphalt concrete roads. It affects the driving comfort of drivers and passengers, and also causes a certain degree of noise pollution to the surrounding enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/04
CPCG01N29/04
Inventor 侯相琛徐烨超曹丽萍任奕奕
Owner HARBIN INST OF TECH
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