| 摘要 |
A protective sleeve 3b, preferably reaction injection moulded of polyurethane resin, is provided at the location(s) where wear is expected to occur on a wire rope. The level of protection may be enhanced by incorporating reinforcement 3a within the sleeve, on the wire rope before forming the sleeve or as an outer sleeve. The reinforcement may comprise a steel or wire band winding with spaces between the wires into which material of the sleeve may flow when forming the sleeve. The sleeve may comprise an inner and an outer sleeve of different materials or materials with different mechanical properties. The inner sleeve, or reinforcement, may be a different colour to the outer sleeve to provide wear indication. The ends of the sleeve may taper towards the rope (3 , figure 5) or the sleeve may have a thickness which varies along its length such as tapering between its ends. Longer sleeves may be formed by a plurality of successive moulding operations. |
