| 摘要 |
The unit (1) comprises an appropriate number of toothed wheels (7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21) attached to at least one drive- (5, 6) and one output shaft (14), forming pairs assembled of one wheel (7, 8, 9, 10, 11, 12, 13) attached to the drive shaft (5, 6) and one wheel (15, 16, 17, 18, 19, 20, 21) attached to the output shaft (14). A gear is selected when both of them (7, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 21) are stationary joined to the shafts (5, 6, 14) and at least one of the remaining wheels rotates around one of the shafts (5, 6, 14). One pair of gears (11, 19) includes one of them (19) engaging in relation to the direction of rotation, either stationary or movable joined to one of the shafts (5, 6, 14) depending on the shaft it is attached to.
|
