Hello fellow 4wdrs. I've been cruising the web now for ages and have a plan BUT.. I can't find what Im looking for.. After the gearbox end of a hydraulic winch..? Can you get them? or order replacement parts..? I have an idea but need to see one first. Any help, links or even if someone has one that I can borrow to take to bits.. Hola.. Just keeping my brain going Ta
This is what I would like to see, major things so far are reduction ratio's but how big are the internals etc etc.. winks.. I got a plan but can't let the cat out of the box yet.. Just thinking outside the square really..
the planetary gear drive from the guts of a large pneumatic drill used for doing up bolts on large earth moving machinery. Basically a smaller version of a final drive on a bulldozer.
Instead of a the Air driven shaft on the sun gear, drive it with a hydraulic motor. If you need more reduction turn the pump 90 degrees and use the normal worm and spur gear used in normal P.T.O winches.
yip sort of.. it's just the mounting side of things im looking at.. But I need it to be small enough but strong enough to take some speed and powa.. also to gear it up say 3-4 to 1 which is where the reduction comes in..Basiclly using the std wormdrive which is some godly 52 or more to 1 but strong and can go fast on one side, then add planetary gears to otherside which drives the drum.. essentially speeding things up but keeping the setup reasonably std.. Just need to see how it could be implemented in practise.. lol You can get he picture im looking at..
Big wrote:yip sort of.. it's just the mounting side of things im looking at.. But I need it to be small enough but strong enough to take some speed and powa.. also to gear it up say 3-4 to 1 which is where the reduction comes in..Basiclly using the std wormdrive which is some godly 52 or more to 1 but strong and can go fast on one side, then add planetary gears to otherside which drives the drum.. essentially speeding things up but keeping the setup reasonably std.. Just need to see how it could be implemented in practise.. lol You can get he picture im looking at..
Yah so ya need to come up with a way of shifting a slip ring or locking ring over two sets of out side planetary gears to lock them up to give you more then one speed bit like a cordless drill only chunky.
might be easier and cheaper to do the following.....
make up a standard drive to the winch at the front (back/middle/where ever) (easier if it is mid mounted probably) and use an old transfer case between the hyd' pump and the winch to change its speed as apposed to trying to make a two/three speed gearbox on the winch itself...I reckon your gear box housing on the winch will be almost twice as long with two leavers by the time you squish another set of planetary's in there.....plus an extra lever to go along side the clutch/freespool/.
Last edited by Crash bandicoot on Tue Jul 08, 2014 5:13 pm, edited 1 time in total.
Big wrote:yip sort of.. it's just the mounting side of things im looking at.. But I need it to be small enough but strong enough to take some speed and powa.. also to gear it up say 3-4 to 1 which is where the reduction comes in..Basiclly using the std wormdrive which is some godly 52 or more to 1 but strong and can go fast on one side, then add planetary gears to otherside which drives the drum.. essentially speeding things up but keeping the setup reasonably std.. Just need to see how it could be implemented in practise.. lol You can get he picture im looking at..
Yah so ya need to come up with a way of shifting a slip ring or locking ring over two sets of out side planetary gears to lock them up to give you more then one speed bit like a cordless drill only chunky.
Cant let the cat outter bag totally.. but you get what I mean.. Or just set the gearing to one gear but the fast side of things..
even better idea, just chuck an inline bypass valve on the hydraulic pump with a variable valve to adjust flow....more flow more speed.....It will still maintain full pressure just not max flow....much like tractor hydraulics......
might need an oil cooler though the friction would probably fry beer battered chips after a long winch at low speed.
Crash bandicoot wrote:i added more to that last post. it will be a engineering master piece if you can get the parts to make it work.
Indeed but you get where I want to go.. and I really don't think it'll be that big.. but that's where the strength of the planetarys comes in and or sun gears. Possibilities are endless to try to make it work.. Also less stress on the actual winch as well as the gearing takes up all the stress instead of just one drive(brass gear) taking all the pain and splitting it to the planetarys as well.. just a thought In theory it could work but to actually make it work may not be able to get there.. I'll ponder some more..
Crash bandicoot wrote:even better idea, just chuck an inline bypass valve on the hydraulic pump with a variable valve to adjust flow....more flow more speed.....It will still maintain full pressure just not max flow....much like tractor hydraulics......
might need an oil cooler though the friction would probably fry beer battered chips after a long winch at low speed.
Don't want to have any hydraulic plumbing at all to keep things simple..
Just keeping my brain going 
