Subject:
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High Strength Powered Steerable pivot wheel
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 21 May 2001 14:30:40 GMT
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Viewed:
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474 times
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I am building a shrimp-style rover along the lines of what Mario Ferrari
built. I uses 6 powered wheels. A pair on each side in lateral boggies,
One in the front on an articulated arm, a rear fixed to the chassis.
Problem is coming up with a strong enough steerable joint. A single axle is
not strong enough to hold up as the rover climbs or descends steps. The
wheel most pivot on its vertical axis. I am aiming for a five position
control: Straight ahead, 45 left and right, and 90 left and right.
Any ideas?
Check out the following links for the design concept:
http://www.geocities.com/mario.ferrari/shrimp/shrimp.html
http://dmtwww.epfl.ch/isr/asl/systems/shrimp.html
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Message has 3 Replies:
 | | Re: High Strength Powered Steerable pivot wheel
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| (...) Do you need to steer each wheel independently? The only really strong turntable element you can also pass a drive through is the Technic Turntable (2855/2856 on Partsref) but you would need six. The internal teeth would make it easy to drive (...) (23 years ago, 21-May-01, to lugnet.robotics)
| | | Re: High Strength Powered Steerable pivot wheel
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| I'm sorry to hear that, because my design was going to use a single axle. My plan is for an eight wheel drive, four wheel steering shrimp. Last night I successfully prototyped a pneumatic steering system. It doesn't solve your problem, though. It (...) (23 years ago, 21-May-01, to lugnet.robotics)
| | | Re: High Strength Powered Steerable pivot wheel
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| (...) All the replies were apparently trying to help you to create a steerable wheel with no motors in the assembly. Did you consider rotating the entire motor/wheel assembly? The advantage is that you don't need a drive to go through the rotating (...) (23 years ago, 23-May-01, to lugnet.robotics)
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