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Noise Prediction and Analysis of Hydraulic Hoist Chamber Based on the Statistical Energy Analysis

Author: LiXin
Tutor: PengYouDuo；WangZuo
School: Hunan University of Science and Technology
Course: Mechanical Engineering
Keywords: Hydraulic hoist Chamber sound field Test Statistical Energy Analysis Noise control
CLC: TB535
Type: Master's thesis
Year: 2011
Downloads: 36
Quote: 0
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Abstract


Hydraulic lifting machine In a result of to has a small volume , compact structure , installation flexible , the operation is simple , and the good the the explosion-proof performance , with the Heng torque output , and , etc. on of the advantages of of while the widely used in mining , and the the vast majority of installed in the the downhole underground chamber among the , is to enhance the ore , Bill of Materials and to the personnel of the the main equipment of . But the the intensity of the noise generated by the hydraulic lifting Machine in the operation of the process Great and high , the sound level , and the the noise frequency bandwidth and complex , spectrum , in the the for five-face closed on chamber in the , the noise reflection strong ability , attenuation slowly , a serious threat to enhance the the driver's physical and mental health , or even cover up the the security Alert signal while the lead to the the occurrence of of the major accident . Therefore to carry out the enhance the machine underground chamber noise the research of the the forecast with the control of of the on the construction of the quiet mines , the safety mines there are a materially the the reality of significance of . The In this thesis, analysis of the the noise source of in the under the the environment of the the the hydraulic lifting machine and its the the underground chamber characteristics and noise sound field environmental characteristics of , to carry out the the noise the environment on-site test and the the the data processing analysis of of the the downhole underground chamber ; based on the statistical energy analysis of method , divided a the machine adit of the entire hydraulic lifting the the the of the subsystem and modal group of of the chamber system , be obtained through the the the numerical calculation and the the Experimental Study on a the of modal density of the various subsystems Statistics on energy analysis of , and within the wear and tear the factor , coupling loss factor and input power and so on parameters ; the analysis software VA One simulation analysis of the applied acoustics a the the of the noise vibration of characteristics of of the the entire system , thus revealing the characteristics of a the the hydraulic lifting machine and the the noise field of the underground chamber , the law of noise propagation with the cHARACTERISTICS OF ENERGY TRANSFER ; from the to the the the geometric structure of the of chamber in , the shape of dimensions , damping and the acoustic characteristics of and other aspects , explore the a hydraulic lifting the the ways and methods of of control by the the machine adit chamber noise to provide the basis for , for the to the hydraulic enhance the machine downhole underground chamber environment noise governance .

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CLC: > Industrial Technology > General industrial technology > Acoustic engineering > Vibration, noise and its control > Vibration and noise control and its use
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