FEATURES OF RESEARCHES OF THE EFFICACY OF DEVICES REDUCE VIBRATION MANUAL AND PORTABLE MACHINES OF IMPACT OPERATING PRINCIPLE
The analysis of the conditions of research on the effectiveness of portable devices vibration damping machines, producing impact. In accordance with its purpose portable machine can work in a variety of conditions, both in different positions and at different longitudinal forces operators. Thus, in accordance with the requirements of sanitary regulations, these machines should not exceed the maximum permissible values under all conditions of operation. For these types of machines, these requirements mainly concern the parameters of vibration levels and its spectrum at different axial forces operators. For research on the effectiveness of vibration devices designed a special stand with electronic equipment, providing exposure to vibration damping device required parameters vibration level range and direction in conjunction with various axial forces, fully reproducing the relevant production conditions. At the same booth generates vibration spectrum in accordance with Fourier series, and in accordance with the standard octave band center frequencies. Studies carried out with the participation of operators.