V.P. Ivanov, A.A. Koltakov, A.Y. Harlamov

Vibration concerns the harmful factors influencing the person. It can lead to decline of productivity of work and its quality and to occurrence of occupational diseases. Application of vibrating insulators in transport mechanical engineering is caused by necessity to reduce negative vibration influence on a human body. At a design stage of the transport technological car key parameters are defined. These are weights of knots and units, overall dimensions, configuration of knots and units on a car frame. When by a choice of parameters it is not possible to lower level of fluctuations, it is necessary to apply additional devices to protection against fluctuations. It is vibrating protective systems. The most widespread way of vibrating protection of cars consists in connection of protected object with its frame by means of typical compound rubber metal vibrating insulators. They work on compression - shift. As an example of the transport technological car electric unit APA-100 is used. The cores excitation sources vibration energy АPА-100 is an independent diesel engine and generator BSG-137. Using the classical theory of fluctuations, the analytical way defines optimum rigidity of vibrating insulators in basic communications of a cabin. Lack of a way of vibrating protection at which rigidity of elastic elements of vibrating insulators remains invariable that at change of an operating mode of the car linear or angular speeds of its mobile links, operating forces and the moments of forces, capacities of power-plants or working bodies, vibrating characteristics in basic communications of protected object change is. And it means that the vibrating insulator on one operating mode will be optimum, and on other - isn't present. The given lack probably to eliminate compulsory smooth change of rigidity of vibrating insulators by change of an angle of slope of elastic elements according to change of an operating mode of the special car. Application of vibrating insulators with possibility of change of their rigidity in the course of unit work is a perspective direction in the field of struggle against vibration. Theoretically also it is experimentally proved that changing an angle of slope of vibrating insulators from 0 to 90, there is a smooth change of rigidity of vibrating insulators. Thus, at change of an operating mode of the car when frequency and amplitude of fluctuations of its frame change, there is a possibility to change rigidity of vibrating insulators, without changing them.