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Unread 11-01-2015, 20:19
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Re: will totes be damaged by repeated lifting?

Quote:
Originally Posted by jimwick View Post
One of our three designs for a lifting mechanism is by lifting under the tote's handle on the SHORT end. (The Ri3d team did this.)

Do we think the totes will hold up if lots of teams do this? Will the lifting handle break? Has anyone experienced failure of the totes from lifting in this way?

Any opinions on this will be welcome.
We were concerned about this as well. With our lifting design, we estimated that our robot would pull that handle out with roughly 15lbs of force per tote being held. For 6 totes, that meant about 90 lbs. I hung myself (~150lbs) off of one of these handles for a few seconds, and the handle did flex a bit, but immediately returned back to its original position when I let go of it. This gives us enough confidence to follow through with our design, but your mileage will vary depending on your design.