Subject:
|
Re: pneumatic cylinder: why not hydraulic ??
|
Newsgroups:
|
lugnet.technic
|
Date:
|
Sun, 11 Jul 2004 00:14:04 GMT
|
Viewed:
|
3977 times
|
| |
|
|
In lugnet.technic, Mark Bellis wrote:
> One key thing about hydraulics has always been "avoid leaks". To switch the
> fluid, just invent something I've wished for for years - the reverser switch.
> This switch has four ports, used in opposing pairs. Clockwise in a circle they
> would be A, C, B, D. In the middle position all ports are blocked. Pushed one
> way and A-C and B-D are connected. Push the other way and A-D and B-C are
> connected. The equivalent is to use four switches, with ports A to D being the
> middle ports of each switch. Connect the outer ports of the switches so that
> you get a crossover of the pipes without any leakage to the atmosphere in any
> position, whilst moving all four switch levers together. With ports on a switch
> being L, M and R, connect 1L to 3L, 1R to 4R, 2L to 4L and 2R to 3R. Connect
> the inputs to 1M and 2M and a cylinder to 3M and 4M.
> Mark Bellis
Hi Mark,
Is the cheapo ASCII art diagram below what you are talking about? We are
viewing the switches/circuit from above. What is not shown is that the handles
are all linked together.
+-----+ +-----+
+-----+ +-----+
| | \ / | |
| \ / |
| \ / |
| \/ |
| / \ |
| / \ |
| | / \ | |
+-----+ +-----+
+-----+ +-----+
Kevin
|
|
Message has 1 Reply:
 | | Re: pneumatic cylinder: why not hydraulic ??
|
| (...) The basic rule is that all tubes connecting two switch side ports must go to the same port on the two switches, to avoid leaks. You can see in your diagram that the diagonal connections don't do that, so they will leak. In a line, this is the (...) (20 years ago, 14-Jul-04, to lugnet.technic)
|
Message is in Reply To:
| | Re: pneumatic cylinder: why not hydraulic ??
|
| (...) One key thing about hydraulics has always been "avoid leaks". To switch the fluid, just invent something I've wished for for years - the reverser switch. This switch has four ports, used in opposing pairs. Clockwise in a circle they would be (...) (21 years ago, 7-Apr-04, to lugnet.technic)
|
38 Messages in This Thread:
 
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
