B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
242/60, 86/5.1
B65H 75/34 (2006.01) B65H 75/44 (2006.01) F42D 1/10 (2006.01) F42D 3/04 (2006.01)
Patent
CA 1060419
ABSTRACT The invention relates to a hose feeding winch speci- fically intended for use in the charging of drill-holes with pulverulent or pumpable explosives through a hose inserted into each individual drill-hole. In the charging of drill-holes especially in rock chambers with narrow spaces the required quick charging of many drill-holes formed in the walls and roofs of the chambers involves many different operational steps for storing the hose by winding up the same on the winch, connecting its rear end to a source of explosives introducing its front end with great accuracity into the individual hole and retracting the same from the hole with the same speed as the explosive is discharged from the front end of the hose and fills the hole for thereupon in wound-up position being ready for a repeated cycle of operations. The winch constructed according to the in- vention which is capable of quickly and accurately performing all steps of the cycle is mounted on a truck and substantially comprises three main parts: a drum rotatable about a central shaft, a drum cage enclosing said drum and mounted separately rotatable about said central shaft and a cradle supporting the central shaft and mounted rotatably about a central axis on the platform of the truck. The drum is devised with means forming a channel or path for the charging hose to be wound up and unwound in a single layer without displacement by sliding movement in radial or peripheral direction on the jacket surface of the drum. The cradle carries on its top an extension unit adapted to be elevated relatively to the cradle and substantially consisting of two profiled parts longitudinally slidable the one within the other - 1 - and a nose device swingably attached to the discharge end of the extension unit and equipped with means for guiding the hose from the drum to the central shaft and from there along the extension unit and means for aligning the discharge or front end of the hose projecting from the nose device to the axis of the drill-hole to be charged with explosive. The truck carries vehicles in which various explosives are stored and from which branch pipes open into a fixed hose pipe which is connectable to the charging hose. By rotation of the drum the hose is guided along the channel about the drum and fed through the extension unit and the nose device into the drill-hole in alignment with the nose device to be retracted by reversed rotation of the drum with the same speed as the drill-hole in consideration is being filled with explosive. The winch according to the ivention also comprises power means for adjusting the individual parts relatively one another according to commands from two control pulpits arranged so on the truck platform as to be easily accessible to an operator standing on the ground immediately behind the rear end of the truck. - 2 -
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