Hydraulic inventions

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Hey guys,I think everyone here has seen a hydraulic tubing bender, a backhoe and such. But I was wondering if you guys have seen anything new or interesting?I saw a trailer called Airtow and it has airbag suspension but hydraulic lifts. Basically, it lowers down so it is ground level, then lifts back up. The way they did it is somewhat unique and I thought it was cool. Post up what you find interesting here.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:That trailer is interesting, I take it the wheels/spindles are mounted flush with the side rails?  A few years back there was a man. making a similar design that lowered the bottom with a winch, like a pop-up tent trailer. This works good, but don't overload or your spindles will lay down.
Reply:Terry are pretty common actually.  I believe they are often used as forklift transport trailers.  Seen a few for sale at various auctionsTiger Sales:  AHP Distributor    www.tigersalesco.comAHP200x; AHP 160ST; MM350P,  Spoolmatic 30A; Everlast PowerTig 185; Thermal Dynamics 60i plasma.  For Sale:  Cobra Mig 250 w/ Push-pull gun.  Lincoln Wirematic 250
Reply:I had one of their bumper pulls. Awesome trailer, I used it for 8-10,000lb skid steers and mini excavators all the time. Sold it for more than I paid for it. Load up, tie down, Lift up and go. Really worked well for trench rollers.
Reply:From what I have seen, the diagonal parts are the tracks that the bed glides up on. The axles are stub spindles and are also an airbag suspension system.It looks like a single cylinder pulls the sled up the diagonal track. I am surprised a single cylinder is the setup.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:Moving heavy machines like mills etc would be great  with thatBacked my CATMA over your CARMA oops clusmy me  What would SATAN do ?? Miller Trailblazer 302 AirPakMiller Digital Elite  Optrel Welding HatArcair K4000Suitcase 12RC / 12 VSHypertherm PM-45Rage 3 sawRusty old Truck
Reply:I rent them from my local Sunbelt rental.  I moved a couple of 75 hp air compressors with them. The plant was under construction and the had to have air. We didnt have anything but a 4 wheel drive tractor and trucks. We couldn't use a forklift to off load them. So a pallet jack and a tractor we moved them.
Reply:Originally Posted by Joker11From what I have seen, the diagonal parts are the tracks that the bed glides up on. The axles are stub spindles and are also an airbag suspension system.It looks like a single cylinder pulls the sled up the diagonal track. I am surprised a single cylinder is the setup.
Reply:Originally Posted by 12V71Mine had rubber torsion axles, and yes the single cylinder would lift a 12k+ load.
Reply:A couple of years back I built this specialized "torque machine".   Not only does it run on hydraulics it's used for the dis-assembly and re-assembly of large hydraulic cylinders that this shop specialized in repairing.   It was designed by a local Mechanical Engineer.
Reply:**Clapping with a Standing Ovation!**That is awesome! My old hydro training/experience made me start to drool! OlyA Refugee from the Peoples Republic of Minnneeesootah living on the Prairie of Eastern Montana.3-7-77
Reply:Originally Posted by Joker11Hey guys,I think everyone here has seen a hydraulic tubing bender, a backhoe and such. But I was wondering if you guys have seen anything new or interesting?I saw a trailer called Airtow and it has airbag suspension but hydraulic lifts. Basically, it lowers down so it is ground level, then lifts back up. The way they did it is somewhat unique and I thought it was cool. Post up what you find interesting here.
Reply:Originally Posted by HT2-4956A couple of years back I built this specialized "torque machine".   Not only does it run on hydraulics it's used for the dis-assembly and re-assembly of large hydraulic cylinders that this shop specialized in repairing.   It was designed by a local Mechanical Engineer.
Reply:Originally Posted by irish fixitI want real badly but just don't have the room. We almost do enough hydraulic cylinders to justify it. The one thing I don't see on it is a hydraulic means for pulling and inserting the rods from the cylinder. It looks like it only torques the rod nuts. Had to do one a while back that was torqued to 5000 ft/lbs. Clamped the rod in the big press with a stand on the end by the piston and used the backhoe to move the wrench. Not the easiest way to do it but it did work.  We've also had to use long cheaters and a come along to a tie down point in the floor to break and tighten them.
Reply:On these big packing nuts that you can't get a normal multiplier on I use a portapower. Build a a wrench (we had to anyway) make the reaction arm that gives me 1ft. from the center of the nut (easy math). Place the hydraulic cylinder at the end of the arm. Start pumping. My 12 ton hollow ram used to get a lot of work. Simple shop math. 2.4 lbs per PSI. 2083 psi gives me 5000 ftlbs.
Reply:Originally Posted by irish fixitI want real badly but just don't have the room. We almost do enough hydraulic cylinders to justify it. The one thing I don't see on it is a hydraulic means for pulling and inserting the rods from the cylinder. It looks like it only torques the rod nuts. Had to do one a while back that was torqued to 5000 ft/lbs. Clamped the rod in the big press with a stand on the end by the piston and used the backhoe to move the wrench. Not the easiest way to do it but it did work.  We've also had to use long cheaters and a come along to a tie down point in the floor to break and tighten them.
Reply:There's a set of adapters (unfortunetly no pics) that slip on over this big main nut to fit what ever sized rod nut you were needing to turn.Last edited by HT2-4956; 12-27-2014 at 10:20 AM.
Reply:This is our cylinder bench
Reply:Just did a search for "hydraulic cylinder benches" and found some pretty impressive looking pieces of equipment.    http://www.bing.com/images/search?q=...ench&FORM=IGRE
Reply:Another hydraulic related thing I built at this place to help make every bodies job easier was this cart to hold this power unit and all the various adapters the mechanics used while working on equipment.
Reply:Originally Posted by ZTFabAny reason why you can't use a torque multiplier to tighten those?
Reply:Great Trailer--this is a Biljax rented for 80 Bucks for the day, best money I ever spent. Last edited by 200mphbusa; 12-27-2014 at 11:49 PM.
Reply:Originally Posted by Joker11Hey guys,I think everyone here has seen a hydraulic tubing bender, a backhoe and such. But I was wondering if you guys have seen anything new or interesting?I saw a trailer called Airtow and it has airbag suspension but hydraulic lifts. Basically, it lowers down so it is ground level, then lifts back up. The way they did it is somewhat unique and I thought it was cool. Post up what you find interesting here.
Reply:My two buddies own a hydraulic shop here in town. I wonder if they have ever wanted a big torque bench like that. All the big cylinders I see them with are muscled with a forklift motor. The smaller ones get beat out with a rubber or hard plastic hammer. If it were me, I would try to bolt the cylinder down, then put a safety strap on the piston to limit travel and blow that beast out of the cylinder with shop air. But since nobody is doing it that way, I am sure it was tried and shelved. LolThat is assuming the seals hold enough to build enough pressure.i would like to see a video of tjay torque bench.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:I assure you that you don't want to use air to blow a cylinder apart. Think chicken gun or pumpkin chunkin cannon. It dangerous enough just to move the piston on a assemble cylinder with air. It can jump pretty good when it decides to move.Millermatic 252XMT 304'sDynasty 280DXHypertherm PowerMax 1250Miller Trailblazer 302 EFIOptima PulserXR feeder and XR Edge gun and more athttp://members.dslextreme.com/users/waynecook/index.htmOriginally Posted by irish fixitI assure you that you don't want to use air to blow a cylinder apart. Think chicken gun or pumpkin chunkin cannon. It dangerous enough just to move the piston on a assemble cylinder with air. It can jump pretty good when it decides to move.
Reply:Oh cmon, I said to strap it down. But I understand. But if nobody ever tried it, we might not have cool potato guns.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:Originally Posted by SandyDang things will store energy till they decide to move then when they do it's with a vengeance.  Smashed a thumb flatter than a pancake once on a simple corroded brake cylinder in a caliper. Thought I would 'tap' it with air.  Tapped it once = nuttin. Tapped it again and it popped out at warp two or three. My thumb was on the other side where I was holding the caliper. Knocked a dent in a 2x4 back stop getting a corroded ram out of one of those grease fill trencher boom tensioners. Had it on the floor. 'Tapped' it with air too. Tap, tap, tapwham!
Reply:I made a little cable roller for some cable I picked up from a tower tear down,just basically a hydraulic motor and a revamped reel and a final drive off a combine, Attached Images
Reply:Farmerboy,I'd have to say that's a thing of beauty and nicely done.
Reply:Originally Posted by irish fixitI assure you that you don't want to use air to blow a cylinder apart. Think chicken gun or pumpkin chunkin cannon. It dangerous enough just to move the piston on a assemble cylinder with air. It can jump pretty good when it decides to move.
Reply:This mishap didn't involve air but it's still a good example of how things can go wrong quickly around hydraulic cylinders. I had to cut the old ends off these arms and weld new ones on because they'd worn the old ones down into the pin bores to the point where the bucket fell off.   As soon as the machinist finished up line boring it one of the mechanics fired up the machine to move it to another bay.   He tried to retract that ram but went the wrong way on the leaver.   That ram shot at least 10' thru the air and crashed to the floor.   It stopped just a foot shy of going into the overhead door.   Turned out the piston was broke off the end of the rod.   The whole time we were working underneath it there was probably only two or three inches of engagement of that ram left in the cylinder that was keeping it from falling on us.
Reply:Originally Posted by HT2-4956Irish,I've seen that idea of using air on hydraulic cylinders go horribly wrong a few times.   I once had a large cylinder set on a pair of jack stands in preparation for doing some welding on the eye end of the ram.   The ram was fully retracted and I tried using air to bump it out a foot or two so the heat from welding wouldn't bugger the seals.   Long story short, when the ram finally did move it shot all the way out to the stop kerbang.  The momentum caused the whole thing to come off the jack stands and end up on the floor.   This was a good sized cylinder that had a ram around 3" diameter and 5 or so foot long.   Lesson learned...air and hydraulic cylinders do not play well together.I've also been around when others have tried to use air to dis assemble a cylinder with the end result that some thing heavy went unexpectedly flying thru the air and it was only blind luck that no one got hurt bad.
Reply:Farmerboy,Is the final drive you speak of also called a hydrostatic motor?I am just trying to figure out what you have going on. I see the engine and pump, and the hoses and the reel. But I am not sure what a final drive is.Lincoln Power Mig 210MP MIGLincoln Power Mig 350MP - MIG and Push-PullLincoln TIG 300-300Lincoln Hobby-Weld 110v  Thanks JLAMESCK TIG TORCH, gas diffuser, pyrex cupThermal Dynamics Cutmaster 101My brain
Reply:Originally Posted by Joker11Farmerboy,Is the final drive you speak of also called a hydrostatic motor?I am just trying to figure out what you have going on. I see the engine and pump, and the hoses and the reel. But I am not sure what a final drive is.
Reply:I worked in a metal stamping shop. We had small mechanical presses 500 tons and under at this plant. They use huge air cylinders as counterbalance to help the motor bring the ram back to top. These air cylinders have 12" to 36" pistons. 1 piston nut backed off of a 18" cylinder.  The little 1/2 plates that was used for the top plate was only held on by 12 3/8" bolts. The piston hit the roof 20'+ up and landed feet from the operator. It would have killed her.I think that was her last say there.
Reply:the final drive is a gear box what was said above is correct,  this one is not a planetary system but a simple pinion and bull gear, small than to days monstersI used the rim of the combine attached to the reel, I use it now to roll up electric fence wire when taking out temporary electric fencing, much safer than the old way,I use the same power pack I use on my log splitter,  and when I am rolling wire I use the return with the detent and if for some reason it over loads, (not full pressure) it will pop out and stop,  (may be not the best in safety but better than none and much better than jacking up the truck and using the wheel like the wire roller was original designed to be used. In all the years we rolled wire with the truck never did have it fall off the jack or a problem, but I did not like using it that way, Attached Images
Reply:Originally Posted by irish fixitI assure you that you don't want to use air to blow a cylinder apart. Think chicken gun or pumpkin chunkin cannon. It dangerous enough just to move the piston on a assemble cylinder with air. It can jump pretty good when it decides to move.
Reply:Originally Posted by FarmerboyI made a little cable roller for some cable I picked up from a tower tear down,just basically a hydraulic motor and a revamped reel and a final drive off a combine,