| 摘要 |
The drive train (10) has one off-round wheel (1) at the drive end and another off-round wheel at the driven end (3) and drives the endless chain (12) through a multi-tooth drawing chain sprocket. The contact curves (2a,4a) of the two off-round wheels are of identical length and the drive end wheel (1) has fewer segments (2) than wheel (3) whose segments equal the number of sprocket teeth (13). Wheel (3) and sprocket (11) are on the same shaft or are coupled by drive gear or transmission. Thus a transmission drive between wheel (3) and sprocket gives a ratio of (ik), where the transmission ratio is defined by the segment (4) angle area and the pitch angle of the sprocket. The contact curve segments (4,4a) of the driven wheel (3) have two turning points (9) and the two wheels (1 and 3) are held at constant axial spacing (5,6). |
