| 摘要 |
<p>A mechanism for loading or unloading a container (7) onto a tray (1) attached to or attachable to a truck or trailer vehicle. The mechanism includes a swing through assembly at each end of the tray, each assembly incorporating a centrally mounted telescoping boom (12), a lower part of which incorporates an extension to which opposed hydraulic rams (15, 16) are linked. The hydraulic rams are adapted to control the swinging movement of the boom when one retracts and the other extends. Each assembly can also incorporate on each side of the tray a stabilising leg (29, 30). In a travelling position the stabilising legs are parked generally upright on or relative to the tray and the boom is retracted to be either upright on the tray or angled slightly from vertical to minimise the vertical height of the vehicle. In an operative position the stabilising legs can be down in contact with the ground and the booms are extended to enable cables, chains or straps to be used to raise a container and swing it on or off the tray of the vehicle. Alternatively the invention provides a means of stacking containers on a tray of a truck or trailer vehicle or on the ground. The telescoping boom can incorporate rollers to assist telescoping of the members forming the boom. The tray can be removable from the deck or chassis of the truck or trailer unit.</p> |
