Marc,
What David T is saying here makes a lot of sense and is probably
the most appropriate to the Phillipines. If you make a couple of H frames
complete with outrigger tripod stays, use a couple of connectors to join the
2 H frames together, and a couple of chain blocks, you can drive to where
you want the container located, set up your H frames, lift the container
about 6", drive the truck out, and lower the container. Uplifting and
shifting the container is obviously the reverse. You could make the whole
framework of steel which all linked together using lynch pins, which could
be stored on top of the container for transport, and quickly erected once on
site. With 3 or 4 people you could have it all unloaded in about 1/2 hr.
Very easy and very simple. By breaking it down into components you could
make it so 2 men could do the whole job by themselves if necessary. Lynch
pins would make it very easy. My only advice is to make sure all welding is
properly done as you dont want any accidents. Also use welded buttressing
(bracing) for added strength and support where required.
B.r., David
----- Original Message -----
From: David Teal <[EMAIL PROTECTED]>
To: <biofuel@yahoogroups.com>
Sent: Wednesday, May 23, 2001 11:08 PM
Subject: Re: [biofuel] Mobile BD plant
> John Brewer helpfully wrote:
> "Self loading trailers are used extensivly in Australia.
>
> The Lifting arms ar on hydrolic rams and can be adjusted to suit 20 & 40
> foot containers, and can postion a 20 footer to correctly position the
> weight distribution on the trailer"
>
> When I was working in rural Africa, such luxuries were unheard of, but we
> managed to unload some fair sized loads with improvised, cheap but
effective
> means. One of the better systems was to erect two guyed goalpost frames
> from stout wood poles. Chain block hoists were lashed to the middle of
each
> crossbar. The delivery truck would drive under the gantry, the load was
> raised, and the truck would back out or drive through. The load could
then
> be lowered onto skids on the ground and be winched (Tirfor etc.) to its
> desired location.
> Of course, the goalpost gantry has to be proof loaded first with dummy
loads
> like plywood boxes filled with sand (easy to create and dismantle with
hand
> tools only). I reckon this approach is still appropriate to places like
> Philippines, Marc.
>
> David Teal
>
>
> Biofuel at Journey to Forever:
> http://journeytoforever.org/biofuel.html
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>
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