WINDERS

EHL provides services, which include Engineering, Design and Drafting of specifications for the upgrading of existing Winders and the provision of new Winders, encompassing:

• Conceptual design to determine the hoisting requirements of the relevant mine
  or shaft (Man, Rock or Material requirements), budget cost estimates and project
  planning
• Engineering design, utilising AutoCAD or “SmartPlant"

DC or AC Drive Systems and Motors
Control Systems with PLC or relay logic functions
All categories of safety circuits
Control and PLC Equipment Rooms and Equipment Ventilation
Brake Control Systems
Shaft Communication Systems
Event/Bell Recording Systems
MV switchgear and supply requirements
LV switchgear and supply requirements
UPS Control System Power Reticulation and Earthing
Winder Drawings and schedules for cabling and termination etc

• Specification, Procurement and Expediting equipment
  
• Quality assurance, factory inspection/acceptance testing and audits
  
• Construction Management and Commissioning
  
• The semi-closed loop Brake System and Electrical Control System
  (developed for chairlifts to comply with the latest SANS 273-2007
  code of practice for “The design, manufacture, maintenance and safe
  operation of chairlifts in mines”)

The above expertise extends into Gold, Platinum, Chrome, Copper and Coal.

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PROJECTS

Our major clients include Anglo Platinum; Anglo Gold; Goldfields; Sasol Mining; Lonmin; Impala Platinum and Resolution Copper Mining in the USA.

Winders installed include Man and Rock Winders, as well as Service and Material Winders.

Refurbishment Projects

Refurbishment of 60-plus small and medium-size Mine Winders (150-1000kW)
Refurbishment of single and double drum Incline Winders (4000-14000kW)

New Projects

6000kW Koepe Rock
Winder at K4
2 x 6000kW Koepe Winders at Impala No16 shaft
Preliminary designs for Evander No8 sub vertical Vent Shaft Winders
Sasol 65 ton Koepe Winder.
Feasibility study: Resolution Copper mining LLC in the USA for 17MW Blair Multi Rope Rock Winder (4500kW - 14000kW)

Development of Braking Systems

Semi-closed loop Brake Control Systems for single and double drum Incline Winders
(between 8 to 35 degrees)