Dump trailer angle of the dangle

[MJPetersen]

Here are a couple of cylinders that are available here, but I do not know where to find them there. Unfortunately.

A complete setup with a hand pump. $650

The ideal cylinder for you. 120 cm (4 feet) compressed 45 cm (18 in) and 4 stages. $350 5.6 metric tons.

This is the one that I have $200 made by "AG Tech"

Maybe you can find some one there that can get these. the second comes from Italy so it is probably there too.

Mike

 

[LD1]

Wow, can we even get those cylinders here?? These guys Bailey International | Hydraulic Cylinders Manufacturer | Hydraulic Supply are usually pretty cheap. And their cheapest 3-stage is north of $700 and 2-stage cylinders are still over $400.

I looked hard and heavy at them when doing my truck. It was cheaper to go the 2-cylinder route and adjust the mounts accordingly.

 

[Artisan]

Cost makes it tough indeed... No way can I swing a grand for a cylinder.

So I started drawing trying to take some of the suggestions into account.
Well, what I could remember.

This cylinder is under 200 bux and I can drive to get it.

The blue bed frame is upp'd to 6" tall to give me more angle of teh dangle and
I now clear the top of the tires.

The lower cyl mount at the axle is drawn as if attached to said but if I do this
I will beef that axle up w/ maybe a .5" thick piece of angle plus a
strongback on the front perhaps, "OR" ..we'll see.

I do not loose any ground clearance this way.

It pretty much is as simple as I can keep it.

"IF" the 10* is ok and "IF" the cyl is strong enough

The trailer is drawn to scale exactly.

All parts drawn exactly to size.

No finals here, still hammering it out.

 

[Artisan]

Oh WOW! I just saw what Mike posted up. VERY COOL!
yea that ball x ball is cool and a trunnion x ball is cool to!

THANK You! Mike! Boy that is gonna inspire quite
a few guys I bet.

 

[Artisan]

Ah HA! Mike's info was good and I found their website.!

Mariz

 

[Artisan]

Binotto !

 

[Artisan]

Mike I hope your ok w/ this... For him-haw sake here is how Mike did his
w/ the ball x ball telescoping $6.00 cylinder! SIX BUX!

 

[LD1]

Looks better but still not quite what I need to say if it will work.

You need to draw a line from bed-frame pivot THRU the cylinder-bed pivot and measure THAT angle to the cylinder. THAT is the effective push angle. See diagram

Also, what is the length of the trailer? And how far forward is the pivot? (IE: where are you pushing on the bed at). It looks like you are a little behind the midpoint. But I need to know exactally (or close) where it is so we can calculate how much it will dump assuming a load of x pounds @ midpoint.

 

[Artisan]

LD1 Your the BEST!

Boy I am all over the place!
But "were" learning too...

Gotta find these "ball and Socket" hinges!

Look at these pics as taken from HERE

 

[Artisan]

OK LD1,

I thunk I have the poop...

 

[Artisan]

More info in Ball and Socket hinges for tipping trailers.

From HERE

 

[LD1]

Okay...here goes some numbers:

3.5" cylinder @ 2400psi is going to give 23,000lbs of force.

Now to figure out how much of that is in the UP direction.

With a 25* effective cylinder angle, you have 9750lbs of force in the vertical direction.

Now to figure what that equates to at the center of the bed...

With a 82" bed, the center is 41". And you are pushing with a force of 9750lbs 30" forward of the rear pivot. So that would equate to a 7100lb lift force at the CL of the bed. BUT...keep in mind that the weight of the bed is raised too. So that gets deducted from the 7100lb capacity to get a true dump force.

But even so...I think that should certainly dump anything you could get on that size of a trailer.

I trust your drawings and angle-of-dump measurment so I wont go into that.

 

[Artisan]

NICE Thank YOU LD1 and indeed the drawings are precision.

Drawing 2D parts in CAD is fun! I would love to have it for
a side job.

 

[LD1]

No problemo and Yes, cad is very handy for drawing things like that. But you can still figure everything without it if you dont have cad. Thats how I figured everything for my dump.

 

[LD1]

Also, I forgot to mention that you need to take into serious consideration that you are going to be pushing on the front axle and on the trailer-side mount with 11.5 tons of force. You need to make them VERY stout given that you are pushing smack dab in the middle of them.

Heres something to ponder about (and draw up in cad...)

Move the front axle back a bit, and drop to a 30" cylinder. Use two of them mounted to the frame-rail on the trailer side and out closer to the wheel on the axle side. You could then drop down to 2" cylinders. Dump angle would be a little less, but it looks like with the 36" cyl you have about 85*, so dropping to a 30" should still give you in the 70* range.

Doing this you wouldnt have to build the mounts like a tank. Each cylinder would push with ~7500lbs force for a combined 15k force. On a 25* angle, that would be about 6500lbs in the vertical direction:thumbsup: so still pleanty to dump. And a 2"x30" cylinder is $110.

 

[Artisan]

So MIKE from Poland has really got me reeling here.
A 3 way tipping trailer is off the chain cool, I mean it
really can be usefull.* These "underbody" telescoping,
trunnion mounted in a gyro swivel w/ a swiveling top
shorty cylinders are the bomb. How much money does
this stuff cost is the next thing I look at just so I cover
all bases before building anything.
I did not know where to get the 3-way-tiling corner
"Balls" but BCP, a man of many productive searches
FOUND THEM at Leisinger Deutschland GmbH: Unternehmen . I registered there
and wrote the firm asking for info on there smallest
units, the KL45's.



*My plan is to make a trailer lower section that dumps,
and then perhaps have a few different attachments
I can mount on it.
Maybe a dirt dump, a log hauler, a platform for an
AutoCrane, etc.
If all 4 corners are "Balls" and if all 4 corners could be
unlatched it would make for EASY top section swaps.

 

[LD1]

Now wheres the fun in a "do it all" trailer??

The way I see it, you can just build 5 or 6 trailers all with a dedicated purpose

I agree with you about the cool factor. Though....complexity and $$$ would be the two things that make be revert back to a conventional dumper.

 

[Artisan]

...and that I may but unless I get edumacated I would
always wonder. LD1 do you have a link to a calculator
or how are you calculating all those forces?

 

[Artisan]

I think I awnsered one question PUSH PULL ANGLE Calculator

 

[shona13]

G'day artisan.
I once worked with an old school Rigger ,this guy had years of experience and his philosphy was kiss Keep It Simple S----D.
If he had a complex rigging job to do he would look at the Rigging engineering drawings and then he would go of and make a scale model and work out the whole job , I never did see a job that he was involved in fail everytime perfect and all he done was to make a model of the equipment.
May I suggest you try this approach.
Regards.
Hutch.