机械振动对人体的影响(人体工程学问题之一)

许多微幅振动会通过座垫传到拖拉机驾驶员身上,如发动机、轮胎、变速器这些做简谐运动的部件或其它一些做转动或平动的部件;还有随机激励。为了研究机械振动对人的不利影响,以及减少的措施,不论是采用振动隔离还是其它方法,我们都必需了解振动的本质、在什么样的条件下人是可以适应的、以及人体对微幅振动的动力影响。本文建议今后把“振动水平”作为农业机械结构设计中不可忽视的内容。

EFFECTS OF VIBRATION ON MAN

Most of the small amplitude vibrations reching the tractor driver through the seat originates at machine components having harmonic motion, such as engine, tires, transmission, or some other components in rotating or reprocating motion or random excitation.In order to study the adverse effects of mechanical vibration and ways of its elimination, whether by isolation or other means, we must understand the physical nature of mechanical vibration, under what condition man is apt to be exposed, and the dynamic response of the human body to small amplitude excitation.In this paper "Vibration Level" is suggested as an unneglible constituent part in the structural design for farm macrinery in the future.