Barylyak V. Justification of the parameters of the drives of timber transporting rope systems

The object of study - the dynamic processes in the drives of timber transporting rope systems. The purpose of the work is to reduce the dynamic forces in the drive elements of timber transporting rope systems by study design and operating parameters of drives based on the improvement of methods of dynamic calculation. Research methods. Performed in the thesis research of dynamic processes in the drives of timber transporting rope systems are based on the theory of oscillations of elastic systems with a limited number of degrees of freedom. Differential equations of motion of mechanical systems are constructed using the principle of D'Alembert. The numerical integration of systems of differential equations performed by the modified method of Euler. Determination of derivatives of functions of variables given the moments of inertia of the drive drums performed by numerical differentiation based on the formula of Newton. Experimental studies were conducted using strain gauges, immediate evaluation and comparison. Scientific novelty. The new dynamic models of the drives of timber transporting rope system were constructed. As well algorithms and software for determination of the dynamic loads in the drive were developed. Actual nature of external loads, multi-layer winding of cables and technological parameters of timber transporting system were taken into account. Obtained results are correlated with the experimental data. Conclusions are made basing on the analysis of well-known scientific research. Practical recommendations for selecting parameters of drives of timber transporting systems with load capacity ranging from 8 to 32 KN were developed during their design creation and exploitation. Recommendations for selecting options of drives of mobile rope systems on wheeled tractors MTZ-82 and T-150K were offered. Characteristics of the engine and transmission of base machine were taken into account.New schemes of timber transporting systems and the design of appropriate elements of the rope equipment were developed taking into account the results of the research and modern requirements to the means of primary timber transportation in mountainous conditions. The branch of usage:forestry production.