Davy Markham Ltd - Design, Manufacture and Machining of Heavy Engineering Components

Davy Markham has a long history in the design, manufacture, fabrication and machining of heavy and complex engineering components and assemblies. Our vast workshops, situated in the industrial heart of Sheffield, offer facilities that are unique in Western Europe, in terms of capacity and capabilities.

The company handles large turnkey projects, utilising its expertise in hydraulics, controls, engineering, installation and servicing, and has the capability of moving individual structures weighing up to 350t.

Davy Markham's overall objective is to satisfy customer demands in a timely and cost-effective manner, without compromising on quality or safety. We have the ability to handle single lifts of up to 350t and assemblies over 1,000t. Davy Markham comprises a one-stop-shop, including design, fabrication, machining, assembly, stress relieving, shot blasting, refurbishment and painting.

MINING INDUSTRY HOISTS AND WINCHES

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

Davy Markham 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 system options include:

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

HOIST REPAIRS AND REFURBISHMENTS

As well as supplying new equipment, Davy Markham 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, DEFLECTOR SHEAVES AND RETURN SHEAVES

Davy Markham 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.

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, Davy Markham provides a full design service, hoist calculations, Finite Element Analysis (FEA), feasibility studies, mechanical, hydraulic and electrical 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 hoists, single drum hoists, blair hoists, sinking hoists, stage winches and haulage units.

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

MINE TUNNELLING EQUIPMENT

Davy Markham 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.

Davy Markham are partner suppliers of tunnel boring machines (TBM’s) for the leading tunnel boring machine designers in the world including Kawasaki, Robbins and Herrenknecht. Davy Markham also now fabricate 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.