Speed change management via differential gear through epicycle
Journal Title: Вісник Тернопільського національного технічного університету - Year 2015, Vol 80, Issue 4
Abstract
The article considers processes of continuously variable speed change management via differential transmission with a closed hydrosystem when the driving element is a solar gear and the driven - is carrier or vice versa. The author has investigated the case when the control element of the transmission is the epicycle connected to closed hydrosystem. When the driving element is the sun gear, driven - is carrier and the management of carrier’s speed is performed by changing the speed of epicycle gear, we have that epicycle gear drives the hydraulic pump that pumps fluid in a closed hydrosystem consisting of pipes and regulating throttle - when regulating throttle is opened. When regulating throttle is closed, then hydrosystem is immovable, hydraulic pump is stopped and so is epicycle. The same goes for the case of driving carrier and driven solar gear. Thus, depending on the bandwidth of regulating throttle, speed of epicycle gear changes from zero point to certain maximum value, while changing the speed and possibly rotation direction of the driven element (carrier or solar gear). The value and direction of driven element velocity depends on construction of differential gear itself and bandwidth of regulating throttle. Results of the paper are the analytical dependences obtained between velocities of driving, control and driven elements of differential gear and graphic reproduction of these dependences by means of computer programing in form of charts. For the first time theoretical research of the speed change process taking place in differential gear with closed hydrosystem have been conducted. Obtained dependences prove the possibility of speed management via differential transmission with a closed hydrosystem and can be used in constructing of new speed changes management devices that include differential gear and closed hydrosystem.
Authors and Affiliations
Oleh Strilets
Keywords
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