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Braking Systems

©Dr. B. C. Paul 1999

With Credit to Dr. H. Sevim for Original Book

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Braking Systems

Must be able to hold the full maximum unbalanced load in suspension in shaft• Achieved by placing brakes on the drum or drive

system of a Keope

Must be able to stop a maximum unbalanced load at full speed within a design tolerance distance• Also achieved by brake on drum• Over-wiend Story at Carr Fork

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More Braking

All braking systems so far clamp down on drum to stop travel - what if rope breaks

Use jaws with teeth that dig into guide rails for skip. Rope tension keeps them open - if lost the close• Very destructive braking system - tear up

guides• Better dropping a skip into bottom of the shaft

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Braking Systems for Drums