| 摘要 |
A tug 10, for moving a trolley 30 having at least one movable wheel 26 and at least one fixed wheel 24, comprises a wheel 14 for steering and driving the tug and an elongate connector 18 for rigidly interfacing with a bar 38 on the trolley. The tug also has two support wheels 16 movable between deployed and retracted positions and the power is supplied by a battery powered electric motor in the body 12. |
