WIRE ROPE SOCKETS
Rope sockets are used for the capping of wire winding ropes or balance ropes, and are frequently regarded as a superior method. The socket comprises a cone-shaped body, suitably machined to accommodate the rope end to be white metalled (resin capped), and a threaded pin with nut and split cotter pin. METHOD OF USE The rope is first threaded through the nose of the cone. The rope wires are splayed out into a brush within the cone and thoroughly cleaned to be free or grease and dirt. Capping is achieved by pouring the prepared Wirelock resin over the separated wires to fill the cone and allowing it to cure. Only genuine Wirelock resin kits bearing the NCB logo must be used. In addition, the socket must be correctly sized for the rope. The sockets are also suitable for use with metal cappings. The Wirelock Technical Data Manual and the British National Coal Board Ropeman’s Handbook publication detail the correct procedures for capping and are recommended references. DESIGN The Rope Sockets are machined from solid 1,5% manganese steel to BS 2772, part 2:1989 Group 2 150M19 in the hardened and tempered condition and their design conforms to NCB 465:1965 for winding ropes, and BS 463, part 2:1970 for balance ropes. Manufactured and serviced by the experts in rope attachments, the sockets carry with them our extensive experience gained in supplying rope attachments to the South African mining industry for more than 30 years. RANGE The tables show the ranges of Rope Sockets available for different rope diameters and loads, and are categorised into winding rope and balance rope applications. DESTRUCTION TESTING At a test conducted by the CSIR Mine Equipment Research Unit in Johannesburg in August 1988, a length of 42mm diameter six strand triangular steel wire rope was white metalled to a WRS 22 Winding Rope Socket. The rope socket, complete with pin and nut, was subjected to an increasing tensile load up to the point of rope failure. The test was terminated at a tensile load of 1454kN, when four strands of the rope fractured 100mm from the socket. Measurements taken after the test revealed no permanent distortions in the socket assembly.
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