MECHANICAL TOOTHED DIFFERENTIAL VARIABLE-SPEED DRIVE WITH BALANCED POWER MEMBER AND REDUCTION GEAR WITH MOVABLE DRIVE

摘要

FIELD: mechanical engineering. SUBSTANCE: variable-speed drive is just multiple closed adjustable gear drive which consists of at least two differential mechanisms with gears and adjusting device. To create required range of transformation of torque at driven shaft of variable-speed drive and reduce power consumption for change of its power and kinematic gear ratios, it is provided with reduction gear with movable drive and adjustable balanced power member. Reduction gear with movable drive has two gears one of which carries out planetary motion. Adjustable balanced power member is formed due to rigid connection members of two mechanisms to which equal but opposite torques are applied. Above-mentioned member is movably and kinematically linked with adjusting device; any smoothly adjustable mechanism (engine, brake and the like) may be used for the purpose. Reduction gear with movable drive operates as lever mechanism or as gear drive due to change in rotational speed and sense of rotation. Change from one mode of operation to other is effected smoothly. Since torque developed by adjusting device is always excessive relative to balanced load at adjustable balanced power member, power and kinematic gear ratios of variable-speed drive may be changed at low consumption of power, not exceeding 5 to 10% of entire power transmitted by variable-speed drive. EFFECT: saving of 25 to 40% of fuel, increase of labour productivity by 20 to 25% and considerable ease of operation; simplified construction and enhanced reliability.