Main reducer online noise test system based on vibration velocity method
A main reducer and noise testing technology, which is applied in the testing of mechanical components, testing of machine/structural components, testing of machine gears/transmission mechanisms, etc., and can solve problems such as high cost and inability to meet rapid testing
Inactive Publication Date: 2017-05-24
HEILONGJIANG HENGNENG SELF CONTROL TECH CO LTD
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Problems solved by technology
However, the cost is too high for general enterprises to afford and cannot meet the requirements of online rapid detection
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[0018] An on-line noise test system for a final drive based on the vibration velocity method, comprising the following steps:
[0019] The first step is to find out the positions with large vibration amplitude on the main reducer housing and the drive axle housing, and arrange dense measuring points at these positions;
[0020] The second step is to import the final drive housing and the simulated drive axle housing into Ansys;
[0021] The third step is to calculate the proportional coefficient of noise and vibration at the measuring point, calculate the vibration velocity level of the entire surface based on the vibration of the measuring point on the noise radiation surface, and convert the radiation sound pressure level by measuring the surface vibration velocity level;
[0022] The fourth step is to test the noise radiation surface of a certain measuring point, and install a piezoelectric acceleration sensor and a sound level meter on the measuring point. Sound-absorbing...
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The invention discloses a main reducer online noise test system based on a vibration velocity method. The method comprises the following steps that step one, the positions of large amplitude on a main reducer shell and a drive axle shell are found, and dense test points are configured on the positions; step two, the main reducer shell and a simulation drive axle shell are imported to Ansys; and step three, as for the proportionality coefficient of noise and vibration of the test points, the vibration speed level of the whole surface is reckoned according to the vibration situation of the test points on the noise radiation surface, and the radiation sound pressure level is calculated through conversion by measuring the surface vibration velocity level. According to the main reducer online noise test system based on the vibration velocity method, noise detection is performed on a main reducer by using the vibration velocity method, the vibration signals of operation of the main reducer assembly are picked up by the system by arranging acceleration sensors at the appropriate positions on a test stand, and time domain analysis, spectrum analysis and signal sample data statistical analysis are performed on the signals through noise analysis software so as to realize noise detection of the main reducer assembly.
Description
technical field [0001] The invention relates to an online noise test system of a main reducer based on a vibration velocity method, belonging to the technical field of reducers. Background technique [0002] The online noise test of the main reducer can effectively guarantee the quality of the product when it leaves the factory. Traditional measurement methods generally rely on workers’ experience to judge or use a sound level meter for off-line detection in a low background noise environment. For the acoustic environment of most enterprises, because the noise at the production site is very unstable, there are often bursts of sound. , and it is difficult to estimate, which makes it impossible to directly measure the target noise with a sound level meter. If an anechoic chamber is built, it will indeed make the measurement accurate. However, the cost is too high, and ordinary enterprises cannot afford it and cannot meet the requirements of online rapid detection. The prese...
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Login to View More IPC IPC(8): G01M13/02
CPCG01M13/028
Inventor 王宏
Owner HEILONGJIANG HENGNENG SELF CONTROL TECH CO LTD