| 摘要 |
<p>A trolley for handling heavy objects such as 200 litre drums. The trolley includes a frame (2) mounted on a first pair of wheels (18) which pivot on arms (19) between raised and lowered positions. A spring (17) coiled about axle (16) urges the wheels (18) downward (i.e. in a direction opposite to arrow (20)). When a drum is to be loaded onto the trolley from a pallet the shoes (26) are worked under the drum (the upper rim of the drum being held under tongues (28) of retainers (27)) and the drum is tipped onto the trolley. The shock of the falling drum is absorbed as the spring (17) is wound and the wheels (18) pivot on arms (19). Further tilting allows the trolley to support its load on fixedly-mounted second wheels (25) as well as wheels (18).</p> |
