Another bespoke project manufactured in house, to meet client specifications and in line with ship systems. This project really was a pleasure to be involved with. The scope involved one 56 Tonne Towing Winch (GM-2000), one 48 Tonne General Hydraulic Winch (CWS-300) and a Dual 75kw Electro Hydraulic Power Unit (EHPU).

 Here are some of the key performance figures for the package:

GM-2000 56Te Tow Winch

High displacement

  • 54 tonnes on 1st layer, 870mm mean diameter
  • 35 tonnes at 7th layer, 1350mm mean diameter
  • 14 metres/min max on 1st layer
  • 21.5 metres/min max on 7th layer
  • Render mode (cross-line relief) 10-50 tonnes first layer
     

Low displacement

  • 27 tonnes on 1st layer, 870mm mean diameter
  • 17.5 tonnes at 7th layer, 1350mm mean diameter
  • 28 metres/min max on 1st layer
  • 43 metres/min max on 7th layer
     
  • Brake rated 56 tonnes static force on 1st layer
  • Capacity for 1200 metres of 40mm diameter rope in 7 layers
  • Hydraulic requirement 370 litres/min, 280 bar
     

CWS-300 Hydraulic Winch

  • 48 tonnes on 1st layer, 748mm mean diameter
  • 29 tonnes on 10th layer, 1252mm mean diameter
  • 16 metres/min max on 1st layer
  • 28 metres/min max on 10th layer
  • Single speed Hydraulic Motor
  • Brake rated 50 tonnes static force on 1st layer
  • Capacity for 1200 metres of 28mm diameter rope in 10 layers
  • Hydraulic requirement 370 litres/min, 290 bar

 

EHPU to power CWS-300, GM-2000, A-Frame and Umbilical Winch 

  • Fabricated within a ISO 10ft Container with standard lifting points and forklift pockets. End (opposite doors) to be louvred.
  • Extractor fan fitted through upper side at door end
  • Electrical supply 380V/3ph/50hz or  440V/3ph/60Hz
  • Tank assy including:-1600 litre Stainless steel oil reservoir
    Suction filters
    Return filter
    4-off stop taps with closed position switches
    Level switches for low level and stop level
    4-off temperature switches – heater on (5°C), heater off (10°C), high oil temp (50°C), stop temp (60°C)
    Oil heater EC6-001 rated 4 kw
    Suction filters, return diffusers, level gauge, filler/breather cap.

 

  • 2 x Electric motor rated 75kW with IP56 protection. Set supply to 415V/3ph/50hz to run at 1475 RPM
  • 2 x axial piston type pump (Kawasaki K3LV-140 ) with load sensing + pressure cut-off + horsepower limiting control, through drive to auxiliary pump, flexibly coupled to the above motor. Set main pumps to 130 cc/rev
  • 2 x boost pumps on through drives from main pumps
  • Water cooled heat exchanger
  • Water supply ball valve
  • 2 x charge pressure relief valve
  • Winch control valve with 4-off control sections 24Vdc
  • Local control box with protection to IP56
  • Star-delta type motor starters
  • 24V dc stabilised supply to winch control unit
  • Winch control unit
  • 3 x variable speed forward/reverse control levers to operate main control valve
    Towing winch
    Grapple winch
    Umbilical winch
  • 2 x variable speed forward/reverse control levers to operate the A-frame control valves. These are customers existing valves, fitted with Parker D1VW004CNJW91 proportional control valves rated 24V, 1.29A
  • Towing winch high/low speed selector buttons with indicator lamps
  • Brake pressure indicator
  • Automatic brake release synchronised to main directional control