Mine Hoists Geared and Direct Drive Head Sheaves and Winches

DavyMarkham - Products - Mine Hoists

DavyMarkham’s Sheffield plant is one of the world’s leading suppliers of mine hoists and associated equipment. Since 1869, more than 300 hoists of all types and sizes have been supplied to customers around the world, providing a complete range of mining hoists and mining equipment.

Friction hoists; Single drum hoists; Blair hoists; Sinking hoists; Stage winches; Haulage units; Specialist winches; Head sheave assemblies; Pneumatic transportation systems; Inspection; Emergency repairs; Service and maintenance.
	Geared and Direct Drive Mining Hoists In collaboration with an approved electrical supplier, a complete hoist can be supplied with either geared or direct drive. Mining Hoist Control and Braking Systems Control and braking systems can be custom designed to meet local conditions and customer preferences. Control and braking system options include: Manual control; Automatic control; Inching or jogging control; Calliper brakes; Disc brakes; Regulated brake control.
Specialist Hoists and Winches As well as the full range of mine hoists, DavyMarkham also designs and supplies many specialist hoists and winches for custom applications, such as: Nuclear power generation and fuel handling; Shipping and dockside equipment; Lifting bridges and cable handling.
	Hoist Repairs and Refurbishments We specialise in hoist repairs and refurbishments to improve safety, reliability and capacity. Dead weight brake systems can be replaced with spring applied hydraulically released brakes either by incorporating spring nest units into the calipers or, by fitting disc brakes using bolt-on disc brake paths. Improvements and options include: Multiple line brake systems; Fast brake application, reducing dead time; Retention of safe braking levels in single component failure mode; Improved operational monitoring; Optional regulated braking; Automatic brake control. Other hoist components and systems which can be replaced or refurbished include: auxiliary drives; new drum shell plates with helical, spiral or double crossover grooving; main drive gears; and bearings.
Head Sheaves, Deflector Sheaves and Return Sheaves DavyMarkham designs and manufactures head sheaves for drum hoists and ground-mounted friction hoists, deflector sheave assemblies for tower-mounted friction hoists and return sheaves for haulage units and conveyor systems. Expert knowledge ensures the minimum inertia compatible with operating requirements for any application. Sheaves are fabricated and machined up to a maximum diameter of 12m and to suit any rope type and diameter. They can be supplied with plain rims or renewable inserts. The use of inserts provides the advantages of giving longer pulley life and improved rope management, ensuring that rope slip does not occur during emergency braking.

Hoist and Winch Engineering Services

As part of a wider range of engineering services, DavyMarkham provides the following:

Full design service;
Hoist calculations;
Finite Element Analysis (FEA);
Feasibility studies;
Mechanical, hydraulic and electrical specification;
Project management;
Ongoing product development.

Typical projects DavyMarkham has been involved with include:


	Nickel Rim Mine - Sudbury - Canada
	Laronde Mine - Sudbury - Canada
	Creighton Mine - Sudbury - Canada
	Coleman Mine - Sudbury - Canada
	Totten Mine - Sudbury - Canada

Click the links above to view the relevant Project Datasheet as an Adobe Acrobat PDF file.