Substantiation of indicators for choosing a dragging route using the principles of navigation

Workers in the logging industry are often limited to assessing the operational efficiency of a skidder by only two indicators, transport productivity and specific energy intensity of the skidding process, but in order to achieve rational use of logging equipment modern instrumentation is needed to select the optimal routes for the movement of machines in the cutting area. It is proposed to create maps of cutting areas, similar to navigational ones, which should reflect the soil-ground, relief and other properties of the supporting surface that determine the operating modes of the machine. To solve the tasks set, it is necessary to measure, record and mathematically process the results of the study of indicators and processes using the theory of probability. Knowledge of the fracture angle of the articulated frame and the torque supplied to the drive wheels will make it possible to obtain the laws of distribution of the tangential thrust force for assessing the dynamics of the process, the energy intensity of the process, various coefficients of resistance to movement, traction efficiency, etc. When skidding a pack of wood, the skidder can be in rotation mode with different radii of curvature up to 70% of the time, while the resistance from turning affects the movement. This resistance can far exceed the force of resistance to movement. To solve the research problems, it is proposed to introduce the coefficient of resistance to movement into the traction balance of logging and forest transport machines, as the sum of the coefficient of resistance to rotation and the coefficient of sliding resistance of wood. Reasonable indicators for assessing the interaction of a skidder with a supporting surface and methods for their instrumental determination will make it possible to choose from a large set of rational dragging routes, the skidding of wood along which will allow you to get the maximum operational efficiency of the skidder.

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