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Open AccessArticle

A Study on Noise Reduction of Gear Pumps of Wheel Loaders Based on the ICA Model

by Panling Huang 1,2, Liang Xu 1,2, Chuan Luo 1,2, Jianchuan Zhang 1,2,*, Feng Chi 3, Qi Zhang 3 and Jun Zhou 1,2
1
School of Mechanical Engineering, Shandong University, Jinan 250061, China
2
Key Laboratory of High Efficiency and Clean Mechanical Manufacture, Shandong University, Ministry of Education, Jinan 250061, China
3
Shandong Lingong Construction Machinery Co., Ltd., Linyi 276023, China
*
Author to whom correspondence should be addressed.
Int. J. Environ. Res. Public Health 2019, 16(6), 999; https://doi.org/10.3390/ijerph16060999
Received: 15 January 2019 / Revised: 8 March 2019 / Accepted: 9 March 2019 / Published: 19 March 2019
(This article belongs to the Special Issue Advances in the Field of Human Health and Environment)
In order to reduce the noise level of wheel loaders caused by gear pumps and realize environmentally sustainable development, the noise generation mechanism of a gear pump was studied, and the influence of flow pulsation and gear impact on noise was analyzed. In order to reduce the interference of other noise sources on the noise level of the gear pump, a noise test rig was established. The mixed noise signals obtained from the rig test were separated using the ICA model. The ICA model includes the following algorithms: The fast Fourier transform (FFT), independent component analysis (ICA) and inverse fast Fourier transform (IFFT). Some theories about the influence of the teeth number and teeth profile on noise were analyzed by theory and simulation. A noise reduction strategy was proposed by increasing the teeth numbers and modifying the teeth profile of the gear pump. The tests results showed that the noise values of the external and the driver’s ear of the wheel loader were reduced to 1 and 2.2 dB (A), respectively. This proves the effectiveness of the optimization scheme of gear pump noise reduction. View Full-Text
Keywords: gear pump noise; construction machinery; noise reduction and ICA gear pump noise; construction machinery; noise reduction and ICA
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Huang, P.; Xu, L.; Luo, C.; Zhang, J.; Chi, F.; Zhang, Q.; Zhou, J. A Study on Noise Reduction of Gear Pumps of Wheel Loaders Based on the ICA Model. Int. J. Environ. Res. Public Health 2019, 16, 999.

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