Grovfjord mek
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Written: 12.07.2010
Warping winches and variable motors
2 off Warping winch 1-AV-20-AHB
in seawater resistant aluminium and stainless steel.
The winch has a fixed drum and automatic hydraulic mulitiple disk brake integrated in gear.
Inverted-/shock valve and maneuver valve for variable pump, LS.
Drum dimensions:
| D = |
1000 mm |
| d = |
320 mm |
| L = |
1500 mm |
Drum capacity: 470 m ø 44mm rope
2 off variable motor for 20 tonner:
Will give a winch carcteristic as shown in the table under.
High power at low speed, and high speed at low power.
This is based on having 230 bar and 120l/min available, ie approx 50kW.
With stepless variable motor, these are the extreme points regarding speed and force:
Pulling force/speed table
| |
100 % motorvolume |
20% motorvolume |
| |
maximum force |
maximum speed |
| Pulling force/speed on empty drum: |
20 tons/ 10 m/min |
4 tons/ 52 m/min |
| Pulling force/speed middle layer*: |
12 tons/18 m/min |
2,3 tons/ 90m/min |
| Pulling force/ speed on last layer: |
8 tons/25 m/min |
1,6 tons/ 128 m/min |
*Middle layer is calculated at 212 m of rope on drum. This will be approx on layer 4.
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MB Hydraulikk AS - Mjosundet Båtbyggeri AS
