Subject:
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RE: Excavator Pics
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Newsgroups:
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lugnet.technic
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Date:
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Thu, 21 Feb 2002 15:02:41 GMT
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Reply-To:
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<william@howard-family.fsworld.co[ihatespam].uk>
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Viewed:
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3896 times
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> Jennifer, correct me if I'm wrong, but isn't a kinematic singularity a • point
> in the motion of a mechanism whereby the direction of the applied force is
> exactly opposed by the final positions of the indirectly connected
> components? In other words, you get to a point where everything lines up
> just right and the thing locks up. A bit like trying to run a • one-cylinder
> engine without inertia?
I actually understood that - thanks!
The real reason for the redesign of the boom/bucket linkage on the excavator
is that I've used a different bucket and the attachment points have a
different geometry. But, Jennifer and Becky are right in that if you
replace the 5U lift arm (propellor blade, 5x1 plate with holes - call it
what you will) near the bucket, from maximum extension the cylinder tries to
pull itself through the boom as opposed to drawing the bucket back.
William
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Message is in Reply To:
 | | Re: Excavator Pics
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| (...) Hi all, It's my first post to the group so by way of an introduction I suppose, there are a few pictures at www.brickshelf.com/c...?m=techgrl . Jennifer, correct me if I'm wrong, but isn't a kinematic singularity a point in the motion of a (...) (22 years ago, 21-Feb-02, to lugnet.technic)
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