| 摘要 |
PURPOSE:To increase transmission torque without augmenting the outer shape of a transmission gear by supporting a plurality of crank pins to drive planetary gears of a cycloidal reduction gear at their both ends. CONSTITUTION:An internal gear 39 is installed at a hub 37 to which an output sprocket 7, and planetary gears 33, 33 whose engaging phase is displaced to each other by 180 deg. are in mesh with the internal gear 39. Rotation of an input shaft 11 which is supported by a support block 13 to penetrate through the planetary gears 33, 33 is transmitted to a crank pin 31 which is supported by the support block 13 and an end disc 25 by means of a toothed wheel 41, and a toothed wheel 43. Since enccentric parts 31a, 31c of the crank pin 31 are pivotally supported by a pin hole 33b of the planetrary gear, power of a hydraulic motor 3 is decelerated, and transmitted to the sprocket 7. |
