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In this paper, a hoisting cable with varying length under the external disturbances is investigated.
A simulation model is presented which investigates the dynamic response of a deep mine hoisting cable system during a winding cycle.
Every hoist handling platforms, cages, or other devices used to transport persons shall be equipped with brakes capable of stopping the fully loaded platform, cage, or other device; with hoisting cable adequately strong to sustain the fully loaded platform, cage, or other device; and have a proper margin of safety.
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The five other compensating cables, as well as six hoisting cables above the car, were found intact, said Ilyse Fink, the department spokeswoman.
The classical moving co-ordinate frame approach and Hamilton's principle are employed to derive a distributed-parameter mathematical model to investigate the dynamic behaviour of deep mine hoisting cables.
Otis sold his first three elevators for $300 apiece and went on to the 1854 exposition at the Crystal Palace in Manhattan, where he demonstrated "the first elevator wherein provision was made for stopping the fall of the car in the contingency of the breaking of the hoisting cables".
Frequently enough, he even found himself attached to a security harness and hauled up the high catwalks where the bridge workers, who became his friends, hoisted cables over the two 500-plus-foot tall suspension towers.
Bob Hovey, the rescue swimmer, clipped his harness onto the helicopter's hoist cable, and Hill lowered him into the water.
A novel scaled model is developed to simulate the linear lateral dynamics of a hoist cable with variable length in a high-rise, high-speed elevator.
It doesn't matter that every eventuality is covered (spare air tanks; a gap too narrow for a shark to bite; emergency safety floats in case the hoist cable snaps).
After climbing up to the cabin, Barker starts each shift with a safety inspection of the equipment on the counter-jib behind the cabin, eyeballing the hoist cable for signs of stress, lubricating the moving parts, and checking the tension on the tower section's bolts and lattice.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com