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TWO-CYLINDER TAPERED MINE WINDERS WITH OUTBOARD BRAKES
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A two-cylinder tapered split-drum mine winder is used for
one-layer rope winding during two-skip and two-cage hoist-
ing as well as for one-apparatus counterbalanced hoisting. A
two-cylinder tapered shape of the drums allows to balance the
hoisting system (to eliminate or reduce the effect of the main
ropes) without using the balancing rope.
A distinctive feature of the single-drum mine winder with
two-cylinder tapered split-drum is that it provides concurrent
operation of the hoisting plant on several levels with the dis-
tance between them being dependent on the movable drum
coiling length.
To provide quick rope length setting upon its stretching or
cutting off for tests, a wedged portion of the drum is bolted to
the shaft while the movable portion is connected to the shaft
with the spring-type air-operated toothed uncoupling device.
The bottom rope affixed on the wedged portion of the drum
may be wound up to the drum split, i.e. to its movable portion
only whine the top rope secured on the movable portion may
pass through the split.
This machine may be provided either with the right-or left-
hand drive assemblies being similar in design the left portion is
wedged, and the right portion is movable. However, with both
drive versions the right rope shall be the top while the left rope
the bottom one.
The mine winder shall be arranged with respect to the head
frame pulleys so that the pulley plane of rotation is shifted
for 100 to 150 mm from the drum plane of split towards the
wedged drum portion thus providing the rope pass-over from
the movable drum portion to the wedged one.