| 摘要 |
<p>The invention relates to a reduction gear (1) which simultaneously comprises a stationary sun gear (10), a coaxial mobile sun gear (20), rotatable on itself about the axis thereof (X-X), planet gears (301, 302 and 303), which are rotatable on themselves about axes (Y-Y) substantially parallel to the axis of rotation of the mobile sun gear and which are provided with first (31) and second (32) helical gear teeth respectively meshing with matching helical gear teeth (11, 21) of the stationary and mobile sun gears, and a planet carrier (40) which is rotatable on itself about the axis of rotation of the mobile sun gear. In order to ensure easy, reliable assembly for said reduction gear, while transmitting high torques having a considerable speed reduction, the helical gear teeth of the stationary and mobile sun gears are reversed relative to one another and are mutually separated in the direction of the main axis of rotation (X-X), thus forming therebetween a free space (E) suitable, when assembling the reduction gear, for adjusting the axial position of the planet gear or gears, such as to engage the first and second gear teeth of said planet gear with the respective gear teeth of the stationary and mobile sun gears.</p> |
