Subject:
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Re: A free motorized switch with every compressor
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Newsgroups:
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lugnet.technic, lugnet.robotics
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Date:
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Wed, 11 Jun 2003 01:14:25 GMT
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Viewed:
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783 times
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In lugnet.technic, Kevin L. Clague wrote:
> I love differentials.
>
> I wanted to share another trick I figured out while playing with pneumatics. By
> combining a differential with the motor(s) and pump(s) of a compressor, you can
> make a motorized switch.
>
> http://www.brickshelf.com/gallery/kclague/compressors/p6070073.jpg
>
> In above behemoth compressor, I have four motors that are mechanically linked
> together. In the center of the motors is a differntial. The motors turn the
> differential case. There are two outputs from the differential. One goes to
> the pump, and the other to a pneumatic switch.
>
> When you run the motors forward, they throw the switch until it hits its limit,
> then the motors drive the pump. If you reverse the motors, the switch gets
> thrown the other way until it hits its limit, and then the motors drive the
> pump.
>
> The switch cares with way the motors are turning, but the pump does not.
> Reversing the motors toggles the switch. Running the motors in the same
> direction as the last time just runs the pump.
>
> This works great as long as you don't want to be able to turn the switch to the
> off position and run the pumps at the same time.
I forgot to add a few more pictures.
http://www.brickshelf.com/gallery/kclague/compressors/p6070072.jpg
http://www.brickshelf.com/gallery/kclague/compressors/p6070074.jpg
>
> PLMKWYT
>
> Kevin
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