| 摘要 |
<p>PURPOSE:To make the servo (the self-force-magnifying effect) act upon both forward and backward motions of the braking device which fits for the agricultural tractor, etc. CONSTITUTION:When, for instance, the brake shaft 1 rotates in the arrow A direction at the forward movement, by stepping on the brake and pulling the traction link 20 toward the arrow B direction, both of the cam plates 4,5 rotate toward the direction that the projections 11,13 come close to each other and the cam plates 4,5 are shifted to the direction that they are away from each other by the action of the ball 7 and the cam holes 6,6, and the group of the mating plates 22 and the disks behind is pressed against the housing inside end surface 24 to brake the brake shaft 1. The stopper 14 of the cam plate 15 is pressed against the knock pin 11 and stops, and on the other hand, the stopper 12 of the cam plate 4 leaves the knock pin 11 and rotates being dragged by the driving side disk 3 for self-force-magnifying effect.</p> |
