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研究机械振动对人体影响的一些资料说明,机械振动对人体的影响及其严重性主要决定于振动的振幅、频率、振动作用的时间、以及经受振动的人体各部分的性能。 振动对人体的第一个影响是人体感觉,感觉是通过人体的许多感受器接收的,如表皮中的末梢神经、细胞组织中的环层小体、肌肉中的肌梭和高尔基腱梭、以及前庭器官等。人体对振动的感觉有一个振幅和频率的范围,当振幅和频率在这个范围内时人体才感觉到振动。例如,人体对加到手指端的切向振动感觉的最小临界值是在频率为200～300Hz和振幅接近10~(-8)m时、而对站或坐在垂直振动平台上受到全身振动的振觉最小临界值是在1～10Hz的频率范围内。 在人体能感觉到振动的频率和振幅范围内,在振动强度相同的情况下,由于频率的不同,人体的
Some information on the impact of mechanical vibration on the human body shows that the impact of mechanical vibration on the human body and its severity depends mainly on the vibration amplitude, frequency, vibration time, and the performance of various parts of the body subjected to vibration. The first impact of vibration on the human body is the feeling of the human body, the feeling is received through many receptors in the human body, such as the peripheral nerves in the epidermis, the annular bodies in the cellular tissues, the muscle shuttle in the muscles and the Golgi shuttle, and the vestibular organ Wait. The body’s sense of vibration has a range of amplitudes and frequencies that the body feels when the amplitude and frequency are within this range. For example, the minimum critical value of the body’s sense of tangential vibration to the finger tip is the vibration of the whole body that is vibrating at a station or sitting on a vertical vibration platform at a frequency of 200-300 Hz and an amplitude of approximately 10 -8 (m) The minimum criticality is within the frequency range of 1 to 10 Hz. In the body can feel the vibration frequency and amplitude range, the same in the case of vibration intensity, due to the different frequency of the human body