| 摘要 |
<p>A rail-mounted lifting or hoisting apparatus 10 for assisting in or use in the installation, maintenance, or removal of equipment or materials 20 at a site 12 at or on or adjacent a railway 14. The apparatus is configured to ensure at least a minimum upper separation 16, such as a safe minimum clearance, between the apparatus, equipment and/or materials and an upper restriction 18, such as an overhead line, bridge, tunnel or overhang or the like. The rail-mounted lifting apparatus may comprise either a winch, pulley, lever, or crane with an attaching means (such as a hook or stone magnet) for lifting the equipment or materials.. A second embodiment discloses as lifting or hoisting device comprising a first ground-engaging means 31 and a second ground-engaging means 42 and a transfer means 34 for transferring equipment or materials. The transfer means may comprise a gantry 44.</p> |
