A thought on safety

A project log for autoCut

robot lawn mower on steroids

schuhumischuhumi 07/09/2014 at 23:373 Comments

As sharp blades rotating at a couple thousand RPM can cause serious damage to things, it might be a clever idea to implement some safety features. So I built this:

The level of the blades is above the screews ends, so things should hit the screws first. Apart from the foolish mounting it seems to work quite fine.

It also has switches to sense hitting on something, although they are not connected yet. Only problem now is, that on high grass the cover tilts towards the front and the screws get stuck (towards the end of the video). But I hope that a proper mounting will stop that (although I have no good idea yet on how to build one, since it must move forwards/backwards and to the sides. Maybe a visit at the local hardware store will tickle my inspiration)


John Quayle wrote 09/10/2014 at 16:52 point
One possibility is to ditch the screws and move to something more flexible, i.e. a skirt. I think a shortened wall base, like what you would use in a bathroom or kitchen could be adequate. Then you would be less likely to get stuck on objects.

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Thom wrote 08/13/2014 at 20:23 point
Indeed, suspend the top or the bottom part of the mowing deck in springs, and let the wheels do the rest.

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PointyOintment wrote 07/10/2014 at 01:31 point
Maybe you could do what conventional powered mowers do and put wheels in front of the guard so that it can just drive up over bumps, though it might drive up over feet just as well…

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