Re: Hydraulics question - not sure what it's calle

Posted by Howard H. on November 27, 2006 at 09:50:31 from (164.58.210.24):

In Reply to: Hydraulics question - not sure what it's called posted by CB in central NY on November 27, 2006 at 08:13:05:

I think you are asking about self-leveling.

I built a hoist that has a self-leveling pair of forks out on the end. I made this one out of some old plow parts and a set of forklift forks.

The key to self-leveling is the parallelogram created by the hinges on each corner between the top pipe linkage and the main beam (green beam tied to big cylinder). That is what keeps the forks at the same angle relative to the ground while raising and lowering the main beam.

Dad has a commercial front-mount John Deere loader that has an extra hinge in the middle for the levelling control linkages. I studied on that for days, but never could figure out the angles/proportions for how it keeps the bucket level.

This looks a little crude - but it is very strong and will raise very high. Plus, it was almost free except for 4 days of welding...

Howard

• Homemade 3 point Hoist

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