| 摘要 |
<p>A planetary roller transmission, comprising a plurality of planetary rollers (23) having an input shaft (11) and an output shaft (13) installed rotatably on a same axis and allowed to roll on the outer periphery of a sun roller (19) installed on the input shaft (11), an output ring (35) formed integrally with the output shaft (13) and allowing the planetary rollers (23) to internally roll thereon, and a speed change ring (37) installed movably only in the radial direction of the input shaft (11) and the output shaft (13) and allowing the planetary rollers (23) to internally roll thereon. The position of the sun roller (19) where the sun roller presses the planetary rollers (23) in the outer direction is located between a position where the output ring (35) touches the planetary rollers (23) and a position where the speed change ring (37) touches the planetary rollers (23). The planetary roller transmission further comprises an axially pressing member (55) axially movable by a centrifugal force generated when the input shaft (11) is rotated.</p> |
