Hydraulically driven axles for off-road tipper trailer

[benski9151]

Here is a Re-post from the Agricultural section:


Has anyone ever heard of a manufacturer selling kits to add traction on a tow behind trailer such as a grain cart?

I know of the Mud Hog system for the steerable combine axles. But it's a rocking axle.

I need solid axles with drives on a tandem tipper trailer. Must be hydraulic drive.

Any clues will be deeply appreciated,

I would now add the following: The hydraulic motor would need to be coupled by means of an over-running clutch. When the tractor-trailer reaches a given higher forward speed, the hydraulic drive would become obsolete (and be switched off) because the drive wheel would become a driven wheel.

It all means it's a traction assist system for running into mud traps or very steep ills.

I'm looking into this option because I can't get any conventionnal off-road tippers to this remote location.


Cheers

 

[Fabrico]

I guess not...but that sounds like a nifty setup. Unless you go alot of miles, you might consider just having the fluid bypass instead of a roller clutch, when not in use.

There is lots of advertising for all kinds of drives in Diesel Progress Magazine. Find a copy somewhere or search the WWW.

http://www.dieselpub.com/dp/index.asp

 

[MikeHalloran]

The roller clutch gets tricky if you want the axle to help when backing up. The fluid bypass will ease the load on the pump, but backdriving a hydraulic motor at highway speed won't do it any good.

Least awful thing I can think of is a 4WD's front axle, with locking hubs, and a hydraulic motor bolted to the pinion. Yeah, you have to get out and unlock the hubs, etc.



Mike Halloran
Pembroke Pines, FL, USA

 

[patprimmer]

The hubs could be locked or unlocked by dog clutches operated by pneumatic cylinders or other appropriate mechanisms. Examples may be found in manually controlled locking differentials.

Regards

eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[Warpspeed]

Only real snag with powered trailers is the tendency to tip over the vehicle when the trailer is pointing sideways to the tow vehicle. Mount the tow hitch very low, and that will be less of a problem.

Agree with Mike, suitable locking hubs fitted to a fully floating axle should be fairly easy to obtain.

Not sure about the remote locking feature though. If it, or the control system back to the cab ever failed, it could do some damage. Manual hubs may be a nuisance, but at least you know for sure which state they are all in.

 

[Les53]

Agco makes a melroe sprayer model 7000 that has front wheel hyd. asist that disengages at about 10 mph then free wheels.

 

[benski9151]

Thank you all.

I was looking at some off-road applications. Trailer to be towed by a Cat Challenger farm tractor (some 300hp) with standard hydraulics to deliver near 100hp.

Have found Fairfield Manufacturing. They are the guys doing it on this planet! Their TorqueHubs are design to support up to 42000lbs of axial load. Imagine how much torque it can take!

Here they are:

http://www.fairfieldmfg.com

Thanks again. I will keep in mind the hydraulic bypass idea if rearward power is needed.

Bye,

BigBen