| 摘要 |
<p>The machine has a rigid semi-reach beam (11) carrying a support chassis of a working unit below the beam. The beam is hitched at level of its front part (38) behind a tractor through two lower lifting arms of the tractor. A slider (19) slides in a slide (18) at selectively adjustable position under control of an actuator (20) which is controlled when beam is towed by the tractor to raised and lower end parts of the beam for adjusting the beam to lower working height of the unit or upper transport height of the unit.</p> |
