| 摘要 |
A mobile carriage has vertical bush engaging frames in opposed relation to engage opposite sides of the bushes as the carriage advances along a crop row. The frames are divided horizontally into upper and lower sections. The frames are further divided vertically into leading and trailing sections. The frame sections are vertically pivoted at their leading ends and have rearwardly extending vertically spaced flexible bush engaging rods. Each pair of opposed sections has one section that is spring biased inwardly toward the side of the bush, while the opposed section is vibratorily oscillated about its pivot to engage and shake the opposite side of the bush. The leading sections on one side of the machine are oscillated, while the trailing sections on the opposite side are oscillated. Separate and independent drive motor oscillate the driven frame sections on opposite sides of the machine; while the upper and lower driven frame sections can be oscillated in different and variable phase sequence.
|
