%0 Journal Article %T Justification operation modes of column rotation mechanism of forest manipulator with energy-saving hydraulic drive %A Bukhtoyarov, L.D. %A Dolzhenko, S.. %A Popikov, V.P. %K energy saving, damper, hydraulic drive, manipulator, mathematical model %J Forestry Engineering Journal %D 2013 %N 3 %P 4 %I FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov