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Winch Cable Reeving and Parts of Line

Winch Cable Reeving and Parts of Line

Winch Cable Reeving and Parts of Line


I'm looking for a sanity check on a concept I'm working through. In the attached sketch, will I be getting five times the line tension lifting at each bottom corner?

Also, is there a preferred pattern to lace the cables through the sheaves for something like this. The lower sheaves will be attached to the same rigid platform and the upper sets will be rigidly attached to lifting points.

Thanks for any input!

RE: Winch Cable Reeving and Parts of Line

If possible, keep the direction of bend the same for a given section of cable, i.e. try not to put any section of cable through a fully reversed bend. You want to keep the fleet angle as small as possible, which means keeping the distance between the sheaves as long as you can. Finally, what keeps your load platform level?

More info. in the US Navy Wire Rope Handbook, among others (USS Wire Rope Engineering Handbook), which can be found by google search.

RE: Winch Cable Reeving and Parts of Line

Thanks for the verification and the references. I omitted the lifted item but it will be a rigid box with the lower sheaves attached. I intend for rollers or guides at top left and right to prevent lateral movement. I believe that will keep it level.

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