Torque for Roating Heavy Winch

[hungrydinosaur]

Hi All,

I am designing a winch, which would have a drum weight of 2000 kg, and wire rope of around 4500 kg wrapped on the drum. I need to find the torque required to rotate the drum from rest.
Is there any literature or reference I can refer/read to? Thanks in advance.

Regards,

HD

 

[LittleInch]

There's plenty, but you need to go looking yourself.

The key aspects for a free rotation are the static friction from your bearings and the force required to accelerate your rotational mass from zero up to your desired speed.

Then you need to add in frictional drag on the rope / cable if its being dragged along the ground and finally factor in the maximum pull force on the rope. As this is a winch I would have suspected that the latter would be head and shoulders over the others, but I don't know your duty.

Look up rotational inertia and how to calculate the effective diameter of your total mass to determine your torque which is then force = mass x rotational acceleration

You might have had more luck in the mech eng other topics forum - things like this come up there more frequently than in the pipelines one(!)

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way