CONCENTRIC CONTRA-ROTATING BEAD DEFLECTOR MECHANISM FOR TIRE MOUNTING APPARATUS

摘要

In that type of apparatus for mounting large size off-highway pneumatic tires on drop-center rims, in which two bead deflectors are moved simultaneously in opposite senses along semi-circular paths, the deflector arms are mounted on the upper ends of concentric shafts having gears at their lower ends, the inner shaft protecting below the outer shaft, each being engaged by an inward facing rack member positioned at suitable height, The two rack members are driven together by a linear actuator whose thrust is reacted through bushings mounted on the shafts above and below the gears. Hence the actuators force which turns the arms imposes no bending moment on the vertical sleeve or platform structure.