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A Bevel Gear Tension Balancing Device for Mining Hoist



 With the increasing mining depth, single rope winding hoist and multi-rope
friction hoist may not be feasible in ultra-deep wells. For the single rope winding hoist, larger rope
diameter and drum diameter are required, while a lot of inconveniences would arise in the manufacturing
process. For the multi-rope friction hoist, the balance tail rope is necessary so that a fluctuation in
stress greater than 11.5% of the wire rope breaking force increases.



The purpose of this patent is to provide an overview of a tension balancing device using new
bevel gear system in the multi-rope winding hoist. In the research, varying tension of the rope winded
on each drum is conveniently and quickly adjusted in different working conditions.



A bevel gear balancing device is designed in the multi-rope winding hoist. It mainly consists
of big and small output bevel gear, shell, balance bevel gear, and support frame.



Unbalanced tension caused by different lengths of the ropes is compensated without any restrictions.
The tension of all wire ropes is always in balance ensured by the balancing mechanism
throughout the whole process of lifting and lowering containers. When the winding diameter of the
drums is different, the tension of the hoisting-ropes will not be precisely adjusted. But it can be negligible.



The bevel gear balancing device in the patent is installed on the main shaft of the multirope
winding hoist. Through analysis, the device was observed to be simple and easy to operate. The
tension of the hoisting-ropes can be accurately balanced.
