Thread: Gripping a Tote
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Unread 14-01-2015, 13:41
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Re: Gripping a Tote

Quote:
Originally Posted by IronicDeadBird View Post
Has anyone tried omnis? The ability to pull in totes and still elevate them vertically is appealing to me. (As opposed to elevate side to side this ain't willy wonka)
Another way to achieve this result is to use a pneumatic cylinder to open and close your collector. This lets you use the grippiest wheels, provides some spring force for your collector, and still allows for a release.

Quote:
Originally Posted by Mike Marandola View Post
Did you install it on a wheel? If so which one? Lack of surface contact might be the problem. The BB wheels may be working better for you because they have more rubber and can compress which increases the contact area. We are using the Green Grippy tread on a claw with about 4 inches of surface contact. In my experience, even a 3 inch long piece when laid on the tote, is extremely difficult to move side to side.
We installed it on an AM Performance Wheel from 2010-2011. The tread was just a bit too big to fit inside the ridges of the wheel, so we just kind of put it on top. Our initial tests used rivets to secure the tread and we assumed the metal contact was the problem, so we switched to using a zip tie or two on the ends so that the vast majority of the green tread would contact the wheel. Same results.

We know the bins were only touching the top third of the wheel or so due to their V shaped profile, and I'm sure that's a big factor, but other wheels work better with the same limited surface contact.

Quote:
Originally Posted by pfreivald View Post
Blue BB wheels work very well for us--but they do wear quickly during prototyping. That should be less of an issue once we have limit switches, etc. in place to keep them from scrubbing so much.
Something else to consider that we're going to try today is using a mechanical slip clutch of sorts to prevent wheel wear. We're playing with using flat urethane belting for power transmission in our intake, which should slip when stalling but if properly tensioned will not.
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