| 摘要 |
A vibration generator for a reversible vibratory feeder or similar device that requires a change in the direction of a generally linear vibratory drive force comprises at least a pair of contra-rotating shafts (6,7) carrying eccentric weights (9, 10) in which one of the weights (10) is journalled on its shaft (7) so that it may shift from one angular position relative to its shaft to another according to the direction of rotation of the shafts. |
