Deep level mine shaft hybrid conveyance system
OwnerRupert John Cruise, Charles Farrell Landyinventors
Life of this patent
Estimating the term…
Abstract
A conveyance system is provided which includes a conveyance for conveying cargo and guide to which the convenience is displaceably mounted for guiding displacement of the conveyance. The system further includes a winding element connected via a cable to the conveyance and a linear motor for at least assisting displacement of the conveyance along a portion of the guide.
Claims14
A deep-level mine shaft conveyance system which includes,
- a conveyance for conveying cargo;
- a linear motor including a guide member carrying stator windings, the guide member being mounted in use in a mine shaft in its lower end region which is at a depth in excess of 1500 m, and a reaction member mounted to the conveyance for displacement along the guide member by electromagnetic forces;
- a hoisting cable in excess of 1500 m in length and anchored at its lower end to the conveyance;
- electrical winding means including a drum, the hoisting cable being anchored at its upper end to the drum and being wound and unwound around the drum to displace the conveyance along the mine shaft, the linear motor at least assisting displacement of the conveyance in the lower end region.
A method of reducing tension in a cable of a deep-level mine shaft conveyance system which includes electrical winding means to which the cable is anchored, the method including activating a linear motor mounted to guide rails and to a conveyance of the system at least partially to inhibit downward displacement of the conveyance and thereby reduce the tension in the cable.
Dependencies are inferred from the claim text.