GB609614A - Arrangement in mining hoists - Google Patents

Abstract

609,614. Mine cages. ALLMANNA SVENSKA ELECTRISKA AKTIEBOLAGET. March 19, 1946, Nos. 8430 and 8431. Convention dates, April 13, 1945, and July 6, 1945. [Classes 78 (iii) and 78 (iv)] In mining hoists the bottom of the cage is movable in relation to the hoisting rope so that when the hoist is stopped at a level, the relative movement between the hoisting rope and the cage bottom ensures that the tracks or the bottom may be brought to the same level as the tracks leading to the shaft from the different mining galleries. The cage 2 is carried by two side plates held by beams 5 and by beams 7 at the top to which the rope 1 is attached. The cage is provided with four pins slidable in slots in the side plates of the suspension device 4. Hooks or bolts 3 project from the side of the shaft and support the cage during loading and unloading to ensure that the tracks 11 in the cage are on a level with the tracks 12. The rope is kept taut by the suspension device so that a pulley winder can be used instead of a drum winder. In one modification the cage is directly suspended by the rope and the bottom is movable with respect to the cage. In another modification the bottom rests on lifting machinery which in turn rests on a suspension device attached to the hoisting rope. When a cage stops at a level, the lifting machinery is started by an electric member at the level and adjusts the level of the cage to make the tracks level.