7 and 8 strand ropes : applications in ropeways - OITAF

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Hauling rope design criteria The rope metallic area decreases with the number of strands. The adoption of compacted strands, for 7 and 8 strand ropes, can compensate their reduction of area. The graph represents the rope fill factor depending by the combination of various rope and strand types. Metallic area Fill factor [%] 60% 55% 50% 45% 40% 35% 30% 25% 20% 15% 10% 5% 0% 6 strands 7 strands 8 strands 19S 31WS K19S K31WS
Fibre core dimensioning The core is the key to obtain a stable and long lasting rope. The materials to be used for the core must be non sensitive to environmental conditions (low and high temperature, UV rays deterioration, water absorption, aging etc.). The core must be designed taking into account that the air trapped between the fibers must be eliminated during the rope closing by the combined action of pressure (generated by the outer strands) and time (depending by the closing speed). For this purpose it is crucial to know the amount of the core volume which can be contained in the rope, and to produce a core having a structure that is easy to modify, in order to assume the shape that the core will take due to the outer strands.
Page 1 and 2: 7 and 8 strand ropes : applications
Page 3 and 4: Hauling rope interfaces The load is
Page 5 and 6: Hauling rope interfaces The ropes r
Page 7 and 8: Hauling rope interfaces The smaller
Page 9: Hauling rope design criteria Charac
Page 13 and 14: Step 3 Fibre core dimensioning To d
Page 15 and 16: Rope dynamic prestretching The scop
Page 17 and 18: Rope prestretching Wire rope stretc
Page 19 and 20: Tail wrapping material Splice longi
Page 21 and 22: Tail wrapping material The final re
Page 23 and 24: Experimental results ROLLER' VIBRAT

7 and 8 strand ropes : applications in ropeways - OITAF

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