WAYS OF SOLUTION OF TIMBER HARVESTING PROBLEMS IN EXTREME CONDITIONS

Abstract

The subject of the research are extreme conditions of timber harvesting, combined method of skidding, modular concept of machine arrangement, mathematical models of technological processes of criteria of estimation. A grounding  to “extreme conditions of timber harvesting” term is given and photos of such conditions are offered.  In order to develop felling points in extreme conditions, a combined method with the use of cable and tractor skidding, based on modular principle of  machine arrangement, is  offered. An engineering solution for combined skidding implementation was stated. A process scheme for establishment of felling points with the use of this type of skidding in extreme conditions was offered. The systems of modular machines for elaboration of such felling points were composed. A preliminary estimate of technological processes and machines systems with the use of the offered criteria is given. In comparison with basic systems of machines, including harvester and forwarder, the offered systems have advantage due to energy saving  during free and operating run of working machine along cutting strips. Specific (to the total felling area) areas of main logways are also being reduced, thus, there is no need in cutting strips laying.