| 摘要 |
<p>A straddling tractor carries a parallelogram which can be distorted by means of a jack enabling the height of tool bar carrying a plough body to be adjusted for height. A tool bar guide arm (10, 11) is attached at its lower end to the front of the tool bar centre beam. The tool bar moves in a vertical direction and is guided by the bar (10, 11) which passes U-shaped guide piece (18). The system provides improved guidance and adjustment of the tool bar by means of an easily movable and reliable system.</p> |
