VARIANTS OF TWO-DoF PLANETARY GEARBOXES KINEMATICS DIAGRAMS VITHOUT CLOSED CIRCUITS

The article outlines the main conclusions of the synthesis of the principal kinematic diagrams of planetary gearboxes with a degree of freedom based on two 2k-h planetary gears with constant and single satellites. Kinematic schemes 4+1, 4+2 and 5+1 are analyzed, consisting of four or five forward gears with two or one reverse gear. The advantage of synthesized kinematic schemes is the absence of circulating power in forward and reverse planetary gears. The analyzed solutions are positioned, in particular, for use in automatic hydromechanical transmissions of some buses and other types of transport vehicles with diesel engines and locked by complex torque converters