Hydraulic lift for powered trailer?

[freedomlives]

A couple of months ago I got to appreciate the load hauling capacity of the powered trailer when we filled it with gravel and took it up to the field to be used for filling around fence posts. I suspect that at least the maximum capacity 750kg of rock was in there, if not even more. The first trip up my father-in-law went with me, so it wasn't a problem lifting the bed to dump it. The second time my oldest son (4yo) went up with me and I strained my back a bit lifting it to dump. The bed sits a bit forward of center on the pivot points.

The Goldoni has an upper and lower PTO. When the powered trailer is connected, the upper PTO shaft is accessible inside the frame and there is probably enough room there to put a hydraulic or power steering pump-- something 10cm (4in) diameter by up to 20cm (8in) length.

The transmission is set up with Hi-Lo and then 1-2-R, so 4 forward speeds, 2 reverse speeds. When the 1-2-R is engaged the upper PTO shaft always is engaged. It turns CCW when in 1 or 2, but CW when in R. I imagine this is a problem with a hydraulic pump to be rotating in reverse. Are there any that can handle that? It doesn't need to provide hydraulic power in reverse rotation, just not get destroyed.

Otherwise I am imagining somehow welding together the PTO adapter to a "free wheel pulley" (which is on many diesel cars, that spins in one direction without engaging the shaft) to the pump.

Then it would also be ideal to have the quick-connect hoses like on tractors to be able to power a hydraulic motor for a small branch chipper/shredder (anything larger than 2 inches being taken for firewood).

I'm just starting to think about this. I still have to fix the electrical system, because the headlights don't work, adjust brakes, replace some bowden cables, etc. that are more pressing things to do.

 

[bcp]

Maybe an electric clutch on the pump, like an air conditioning compressor has. The pump only runs when you turn a switch on.

2nd idea: V-belt drive with an easy tensioner, so a belt can be put on or removed in seconds.

3rd idea: Rubber wheel friction drive.

4th idea: Electric hydraulic pump

5th: Electric winch and a post with pulley on top.

Bruce

 

[dfkrug]

Don't these 2 tractors have their own hydraulic systems that you can access?

 

[Trials]

We have an old saying that states: A picture is worth a thousand words

Hydraulics are nice if you need a whole lot of power, but it can get real expensive. There are lots of other ways to lift something that does not involve hydraulics. Screw jacks, rack and pinion gears or pulley systems come to mind as being a far more simple and cost effective way to accomplish something that you are currently doing by hand.

Coil torsion springs mounted at the hinge point do a good job of counter-balancing a trailer bed that is heavy when it is in the lowered position and lighter as it raises:

Just a suggestion

 

[farmerboybill]

My friend has a powered trailer for Grillo 131. I think he has a hand pumped hydraulic jack. Sorta like a porta power where the pump is off to the side and a hose runs to a cylinder on the hoist.

 

[steelworker1965]

I have mounted a hydraulic jack under the trailer. The power is transmitted via a lever.





Robert

 

[freedomlives]

Thanks for all of your replies! I need to change my settings on this forum, to automatically notify me of replies!

I do think I'll go with one of these hand powered systems. I'm sure I'll be moving gravel and other things that need dumping several time a year, but indeed not every day.

As far as a hydraulic pump, I still thinking about one, or a generator, but for powering external tools, like a branch chipper. However, I'm thinking it would be interesting to attach it to the other end of the Lombardini Diesel motor. There is a starting pulley (for rope starting) there that is just attached to one end of the crankshaft, and I don't see why an adapter couldn't go there to attach a generator or hydraulic pump directly (though it would have to be for less than the full 11kw of the motor because in the service manual I see that this end of the crankshaft is thinner, so can't transmit so much power).

 

[freedomlives]

I have mounted a hydraulic jack under the trailer. The power is transmitted via a lever.
Robert

Is that hydraulic jack cylinder from a trolley jack?

 

[steelworker1965]

Is that hydraulic jack cylinder from a trolley jack?

Yes. it is a Hydraulic cylinder from a trolley jack.

Look the pictures in the link. I have mounted a hydraulic pump in the front of my two wheeler tractor.


Einachser PE 700 Umbau by Robert | Photobucket

 

[freedomlives]

Very nice! Did you make the pulley to go on the engine crankshaft or were you able to find one? And, by the way, do you have any german online shops you would recommend for hydraulic pumps and pulleys and stuff? With other things, i have found that ordering from germany can be cheaper than Slovakia.