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汽车变速器产生噪音的机理是由于齿轮系统的复杂振动、撞击、摩擦等。控制噪音的方法,其一是削减振源,其二是控制其传出。本文采用后一办法进行研究。借用有限元分析方法,算出其自振频率范围,再用高分子化学方法把有机材料合成制备,涂于变速器壳体外部或内部表面,形成封闭,使声能转化为热能而被消耗;对轴承及垫片,亦作适当处理。预计变速器总成可取得减低噪音5至10分贝(A)的效果。本文以哈尔滨汽车齿轮厂生产的131汽车变速器为例,作控制噪音新途径的初步探索。
The noise generated by the transmission mechanism of the vehicle is due to the complex vibration of the gear system, impact, friction and so on. One way to control noise is to reduce the vibration source and second, to control its transmission. This article uses the latter approach to research. Borrowing the finite element analysis method to calculate the natural frequency range, and then use polymer chemistry synthesis of organic materials preparation, applied to the outer or inner surface of the transmission housing to form a closed, so that the acoustic energy into heat energy is consumed; bearing And pads, but also for proper treatment. The transmission assembly is expected to achieve the effect of reducing noise by 5 to 10 dB (A). In this paper, Harbin Automobile Gear Factory 131 car transmission as an example, as a new way to control noise preliminary exploration.