A-Frame and Winch System



A-Frame and Winch System

Promoter designs and manufactures A-frame according to customer’s requirement/specification. Steel wires enter A-Frame directly onto center sheave or through sheaves up along one of the legs. A-frames are available as single fall models (one cylinder on each side) or with double fall (two hydraulic cylinders on each side) based on customer’s operational requirement. Tension measurement devices are installed on A-frame sheave for safety purpose. The drum capacity, nominal pull and brake holding, and structure design can be customized in accordance with client specifications, class society rules and environmental requirements.  The system can be delivered with electric VFD or electro hydraulic.




  • Subsea ROV Launch and Recovery System
  • Well intervention
  • Subsea umbilical, riser and flowline installation
  • Decommissioning
  • Anchor Handling



  • Safe working load from 5 ton to 200 ton
  • Highly environmental resistant paint coats
  • Stainless steel fittings, fastenings and pipe work to reduce corrosion
  • Auto spooling device
  • Built-in foundation skids
  • Greasing system
  • Local Control Panel (Fixed on frame or Standalone)
  • Remote Control Panel (Bridge Control or Pendant Type)
  • Available in centre-rigged, side-rigged, knuckle-jib and telescopic versions
  • Design temperature from -20°C to 50°C
  • Compliance to BS EN 12079
  • Lloyd’s Rules for Lifting Appliances in a marine environment



  • Length, tension, temperature, oil level measuring systems
  • Bridge control, local control
  • Constant tensioning systems
  • Stainless steel IP 66/67 starter and junction boxes
  • Primary brake with fail-safe lever valve
  • Secondary brake with load holding counterbalance valve
  • Hydraulic reversible motor gearbox and brake assembly, providing direct drive to the winch