Abstract
The purpose of this study is to propose a technique to reduce the torque applied onto driven shafts of monorail for forest industry. To reduce the maximum torque, the modified power train are proposed. The variations of torques of driven shafts were measured with respect to the rotational angle of shaft when the driven pinion gears were engaged experimentally with original and worn rack rail in which the wear depth of tooth was w=3mm, respectively. When the modified power train concurrently driven by v-belt was applied, the maximum torque of rear driven shaft was decreased remarkably. The torque contribution ratio of rear driven shaft was reduced down to about 63% by applying modified power train, while that was 89% through the conventional power train, even when the test systems were driven on worn rack rail. The slip ratio between v-belt and rear driven pulley was increased and the peak torque of rear shaft was reduced due to application the modified power train concurrently driven by v-belt.
