Experimental Justification of the Technological Parameters for the Mobile Branch Trimmer

Based on a complex technical and economic evaluation of machines for grinding cut branches of fruit trees of a compacted garden, it can be noted that it is more appropriate to use single-stage two-rotor shredders with vertical axes of rotation of the rotors, the working organs of which are hinged hammers. Simultaneously, the energy performance of wood shredders is quite different and depends on some factors. In this regard, the research was aimed at determining whether the rational operating modes of the shredder based on energy indicators are relevant. The purpose of these studies was to improve the efficiency of the mobile shredder of fruit tree branches in compacted orchards by substantiating the technological parameters of its operation. The research was conducted at different speeds of hammers and diameters of branches. Work costs for obtaining, circulating, and exiting the chamber of one chopped piece of wood at different rotation frequencies of the rotors, changes in the specific weight of the bundle of branches, and the gradual speed of movement of the unit were also determined. These operating modes of the chopper coincide with the rational range from the point of view of the minimum energy consumption of chopping branches. The gradual increase in the speed of the grinder determines the growth of the specific work for obtaining one crushed particle as the supply of material to the hammer increases.