Abstract:Larger vibration and noise often exist in agricultural machinery due to the harsh working environment and high power. The rubbing machine is one of the indispensable pieces of equipment in the agriculture and livestock industry, and it is affected by the vibration of large constraints on its promotion and use. To reduce the vibration of the rubbing machine, the vibration characteristics of the spindle rotor were first analysed by modal simulation, thus determining the larger contributions to the spindle rotor … Show more
The operation of belt grinding machines is usually accompanied by a significant level of noise and vibration, which adversely affect the health of operators and the accuracy of processing the final product. It is known that in the woodworking industry there is an increased risk of myocardial infarction due to significant noise in the workplace. The purpose of the article is a theoretical analysis of the occurrence of noise and vibrations of belt grinding machines and the construction of appropriate mathematical models. The influence of various noise sources in the machines under consideration was analyzed: electric motors, belt drives, grinding belts, axes of cutting units, and workpieces being ground. The solution of the vibration equations of the tape and the workpiece made it possible to obtain an analytical solution for the vibroacoustic characteristics. The obtained solutions are in satisfactory agreement with the experimental data and allow the design to develop engineering solutions that reduce the sound pressure level.
The operation of belt grinding machines is usually accompanied by a significant level of noise and vibration, which adversely affect the health of operators and the accuracy of processing the final product. It is known that in the woodworking industry there is an increased risk of myocardial infarction due to significant noise in the workplace. The purpose of the article is a theoretical analysis of the occurrence of noise and vibrations of belt grinding machines and the construction of appropriate mathematical models. The influence of various noise sources in the machines under consideration was analyzed: electric motors, belt drives, grinding belts, axes of cutting units, and workpieces being ground. The solution of the vibration equations of the tape and the workpiece made it possible to obtain an analytical solution for the vibroacoustic characteristics. The obtained solutions are in satisfactory agreement with the experimental data and allow the design to develop engineering solutions that reduce the sound pressure level.
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