Subject:
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Re: Gearbox
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 9 Apr 2005 20:37:32 GMT
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Viewed:
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883 times
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In lugnet.robotics, Andrew G. Meyer wrote:
> Does anybody have diagrams, pictures, etc., regarding a "one-way" gearbox? This
> would have ideally one input and one output shaft, and the output shaft would
> turn the same direction no matter which direction the input was turned. Like a
> rectifier for mechanical energy. This would be used to drive a pendulum-powered
> novelty car.
>
> Andrew Meyer
Since you're using a pendulum, why not use an escapement like a clock? The
pendulum permits the release in one direction of a certain amount of rotation of
the escapement wheel, which is spring or elastic-band powered.
An important thing to note with clocks is that very little power is taken from
the pendulum itself and that the escapement spring must give the pendulum the
same amount of energy as the pendulum gives it, in order for the pendulum to
maintain its full swing. The pendulum in a clock stops when the escapement
spring unwinds because the escapement wheel no longer pushes it out to its
maximum swing.
I believe one type of reverser involves two 24-tooth crown wheels facing each
other. Their shaft slides in order to engage one of them at a time with the
output cog.
Another type could use a differntial gear, fixing the cage to the input shaft in
one direction and fixing it to the chassis in the other direction (using the
bevel gears to reverse the output shaft).
Mark
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Message is in Reply To:
 | | Gearbox
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| Does anybody have diagrams, pictures, etc., regarding a "one-way" gearbox? This would have ideally one input and one output shaft, and the output shaft would turn the same direction no matter which direction the input was turned. Like a rectifier (...) (19 years ago, 9-Apr-05, to lugnet.robotics)
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