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The increase in engine power and the speed of movement of the machine-tractor unit leads to an increase in the amplitude and frequency of oscillations of the hook force. At the same time, the magnitude of these effects depends on fluctuations in the hook load, the nature of the work process, the dynamics of operating modes and the frequency properties of the transmission. Reducing the nature of transient dynamic loads can be achieved by using elastic connections in the tractor structure. The issues of a rational combination of increased operating power of the engine with a simultaneous decrease in dynamic loads in the transmission exacerbate the problem of choosing rational modes of operation of the machine-tractor unit. Uneven hook load causes fluctuations in the engine crankshaft rotation speed, an increase in the load on the transmission parts and, consequently, a decrease in power and an increase in engine fuel consumption. Therefore, to protect the transmission from vibrations that occur in the engine-transmission system, special damping devices are used. A characteristic feature of the device, which is the possibility of using elastic - damping elements, allowing to reduce the frequency of natural vibrations of the transmission.

Mathematical model for studying the operation of a machine-tractor unit with a tractor «DT-175S» with an elastic element in the linkage system