DavyMarkham

Mining hoists and winches

DavyMarkham produces a wide range of hoists, winches, sheaves and other equipment for the worldwide mining industry. These include friction, single drum, double drum, blair and sinking hoists, stage winches, haulage units, specialist winches, head sheave assemblies and pneumatic transportation systems.

DavyMarkham has manufactured more than 300 hoists of all types and sizes. We have the capability to provide:

• Full turnkey project service from feasibility and design to commissioning
• Manufacture of equipment, refurbishment and renovation projects
• Installation
• Ongoing service inspection and support

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 systems include:

• Manual control
• Automatic control
• Inching or jogging control
• Calliper brakes
• Disc brakes
• Regulated brake control

Mining hoist repairs and refurbishments

As well as supplying new equipment, DavyMarkham specialises in hoist repairs and refurbishments to improve safety, reliability and capacity. 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, deflecting sheaves and return sheaves

DavyMarkham designs and manufactures head sheaves for drum hoists, ground-mounted friction hoists, deflector sheave assemblies for tower-mounted friction hoists and return sheaves for haulage units and conveyor systems.

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 a full design service, hoist calculations, finite element analysis (FEA), feasibility studies, mechanical, hydraulic and electric specification, project management as well as ongoing product development.

The Sheffield plant is one of the world’s leading suppliers of mine hoists and associated equipment. We supply friction, single drum, blair, and sinking hoists, as well as stage winches and haulage units. We can also provide:

• Specialist winches
• Head sheave assemblies
• Pneumatic transportation systems
• Inspection
• Emergency repairs
• Service and maintenance

Tunnel boring machines and equipment

DavyMarkham has built upon the company’s expertise in building tunnelling machinery for the Channel Tunnel, London, Paris and Moscow metros, and other major tunnelling projects.

DavyMarkham is a partner suppliers of tunnel boring machine components (TBMs) for the leading worldwide tunnel boring machine designers. DavyMarkham fabricates OEM and spare parts for tunnel boring machines and other mining and tunnelling ancillary parts such as tunnel shields, tunnel roadway supports and cutting heads.