| 摘要 |
<p>The suspension comprises wheels (12) mounted to a frame (9). This is mounted on the chassis (1) such that it can pivot perpendicular to the direction of travel. The movement of the frame about the chassis is controlled by a spring (17) and dampers (18,19). The axle (11) of the wheels exerts a first loading couple in a first rotational direction about the axis. A spring (17) exerts a second loading couple on the frame in a rotational direction that is opposite to the first rotational direction. With no load on the equipment, the lever arm of the first loading couple is maximized, and the lever arm of the second couple is minimized.</p> |
