| 摘要 |
A reversible plough comprises a number of ploughshares carried on a longitudinal beam or saddle 11 which is supported on a two-wheeled carriage, the beam 11 being rotated through 180 DEG about a longitudinal axis 19 to reverse the plough, the rotation being affected by hydraulic rams 22 (23) whose movement is guided by pins (221, 231) held in shaped slots in plates 401, 402. The beam rests when in either of its working positions and adjustable supports 187, 188 and the beam is secured to a T-shaped frame 17, 172, 173 which is pivoted to a wheeled carriage 16 and which may be moved vertically relative to the carriage about an axis 18 by a ram 21. <IMAGE> |
