Motor sizing - winder, hoist, pulley

[shorion]

Hi all, its been a few years since I've touched sizing motors, shafts gearbox etc

Can someone point me in the direction of a good book on this with well developed examples starting from first principals. Hoists, drum winders, drum crush? etc

I have a drum, a load, a shaft, a gearbox, a motor that I'm designing.

I remember vaguely you calculate the inertia of the load, the shaft, the drum, the acceleration then the torque, then through the gearbox and and torque reduction/increase to the motor then the motor. Along with efficiencies and bearing friction along the way. I cant remember how to put it all together nicely.

At the moment I'm just flapping about on google not finding anything particularly helpful. A lot of its very poorly written.

Can anyone recommend any books with specific fully worked examples so I can relearn it all from basics.

This would include calculating inertia and torques required. Then the gearbox. Then the motor sizing.

Thanks so much in advance.

Regards

 

[mikekilroy]

I can't offer docs to download, but why not ask SUPPLIERS of that type equipment to DO THE CALCS FOR YOU? Good distributors will and show you how they calculated it all - best example in the world - yours! Ask 3 to get consensus?

http://www.KilroyWasHere<dot>com

 

[tygerdawg]

Can't think of any resources for the strengths of materials & machine design aspects of drum construction to counteract cable wrap forces.

But the gearmotor portion is readily available through most of the major players in the gearmotor market: SEW Eurodrive, Nord, Dodge, etc. Some have online application sizing calculators, most have Engineering Manuals to guide one through the sizing process. And you can contact the Applications Engineering departments of those companies for engineering assistance. I have not had good luck or experiences with distributor companies like Motion Industries, Kaman, etc., for complex applications engineering assistance.

Shaft design: the most practical I've ever seen is in Machinery's Handbook. Design method is simplified, and works around standard stock sizes.

TygerDawg
Blue Technik LLC
Virtuoso Robotics Engineering

http://www.bluetechnik.com