| 摘要 |
<p>The earthmover has a frame or chassis (1) and a jib (6) mounted pivotally with respect to the chassis about an axis (7). A balancing arm (8) is mounted pivoting with respect to the jib about a second axis (9). A loading bucket (10) pivots with respect to the balancing arm about a third axis (11). All three axes (7,9,11) are parallel. A pivot regulator cylinder (12) connects the chassis and jib and a double acting hydraulic jack (13) connects the jib to the balancer arm. A double acting jack (14) connects the balancer arm to the bucket, all three connections being linked to a source of fluid under pressure.</p> |
