According to the GB/T 4446-1995 standard, when producing marine mooring winch, its performance should meet the following requirements: drum load, support load, recycling load, function etc.

1. The function of mooring winches

Winches have the function of retracting, holding, and storing ropes on the drum, and these types of winches can also be used for twisting cables(See the table below).

2. Performance

2.1 Drum load

When operating at the corresponding nominal speed, the drum load should not exceed 33% of the designed rope breaking load.

2.2 Support load

The supporting load should not be less than 80% of the designed rope breaking load.

2.3 Recycling load

The recovered load should not be less than 50% of the drum load.

2.4 Release the load

The released load should not exceed 50% of the designed rope breaking load.

2.5 Automatic retraction speed

The maximum speed for the automatic mooring winch to retrieve and release the first layer of rope during automatic control should not be less than the specified crawling speed.

2.6 Setting of Automatic Control Torque

The automated control device should be able to enable the winch to achieve pre set small load release and load recovery.

For automatic mooring winches that can be adjusted infinitely, the maximum automatic control torque set by the prime mover should be able to be adjusted infinitely to the minimum automatic control torque.

For automatic mooring winches with stage setting, there should be setting values of 2 or more gears, and each gear should be easy to switch between.

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