Adaptation of a friction hoist system to a drum hoist system

CIM Bulletin, Vol. 75, No. 847, 1982

J.R. PRONOVOST Senior Manager of Engineering, and D.W. WATTS, Senior Manager of Development, J.S. Redpath Limited, North Bay, Ontario, P.M. TILEY, Consulting Engineer, G.L Tiley and Associates, Hamilton, Ontario

In 1980, J.S. Redpath Limited were retained by Dickenson Mines Limited to increase hoisting capacity from 700 to 1000 tons per day. The hoisting capacity of the present skip-over-cage system could not be increased significantly through design modifications. The other constraint was a minimum of disruption to the current production. The Dickenson shaft was a three-compartment shaft from surface to the 8th level and four compartments before the 8th to the 23rd level. The solution to the problem was to remove the services from the shaft man-way compartment from the 8th level to surface by drilling a borehole close to the shaft and rerouting those services through the borehole to the 8th level. A service compartment would then be available from surface to the 23rd level. By providing a service hoist in this compartment, the skip hoist would then be free to produce the 1000-tons/day required production. This paper will describe the search for the required hoist and the friction hoist selected for the project, and trace the design modifications required to modify the hoist to suit the Dickenson application and satisfy the Department of Labour safety requirements. The paper has been co-authored by J.S. Redpath Limited and G.L. Tiley Associates, who participated in the design changes and eventual commissioning of the hoist.
Keywords: Equipment, Maintenance, Friction hoists, Drum hoists, Hoisting, Dickenson Mine, Limited, Shafts, Safety.