During operation, oil is pumped into a connection block, which in turn distributes it to the cylinder block and pistons. This causes the pistons to act against the cam ring, producing a momentum that makes the shaft rotate smoothly.
I'm pretty sure that during operation; Oil is pumped into a connection block, which in turn distributes it to the cylinder block and pistons. This causes the pistons to act against the cam ring, producing a momentum that makes the shaft rotate smoothly...
We actually had a representative here last week from hagglunds in Ohio to look at a problem we had with a machine. He was telling is that if the hydraulic pump were out, it would be a 32 week wait since it was a European part and that the waiting period on parts has went up astronomically since bosch bought them out. Luckily it wasn't the pump but at 100k-150k lost per day, 32 weeks that equates to 20m-30m in lost profits all because Bosch/haggluds wants to keep inventory down and not pay taxes
Now I understand how the paint colour-change machine works. You pump green paint in and red comes out the other side. I wonder if it can convert white to black and purple to yellow too?
Quite a few major companies have experimented with hydraulic drive motors for vehicles. Honda motorcycles did quite a bit with this idea. But it lacked efficiency and places maintenance demands that the public might resent. Hydraulic oil in drive systems with reasonable power tend to have the oil cutting a way at the lines and fixtures. It seems that hydraulics are best used in situations where slower movement that is sporadic is called for.
Very smart comment that adds a lot of information to the subject. almost like the video. They are showing rollers but not pistons that push them from the center of the hub.
the pistons have a perpendicular hole the roller goes thru- incredible machining, as the top end is open- how the heck did they bore/hone the bearing holes? can only picture the holes are fnished, then EDMd off thru the holes...too complex, but reliable/massive torque...
This is a hydraulic motor in the radial piston family (a "cam ring" type, to be exact. There are several concepts in use). Typical caracteristics are high torque, low max rpm and relatively good total efficiency (95-96%, depending on working pressure, oil viscosity etc.). Typical applications include machinery such as paper spools in paper factories, tilting railway cars track drives etc.
This is a similar concept to the Komatsu excavator final drives only in that case the pins/rollers are fixed around the outer and the wave plates gyrate inside on cams driven by a small hydraulic motor. The rollers on this unit appear to be on rockers actuated by hidden hydraulics.
Hagglunds drives are a unique product for machinery that requires low speed but high torque. I have worked on a few machines with these motors and even pulled a couple apart. However if you want spare parts, documentation or just limited information over the phone; forget it!!! Hagglunds/Bosch Rexroth have this product completely sewn up. All major repairs and even minor repairs have to take place at a registered Bosch Rexroth service repair centre. Here in Australia it means sending the damn things all the way up to Queensland on Australia's north eastern coast. So if you are in Perth on the far west coast of Australia it is a 4,340 km or 2,695 mile journey to get there! I guess if you are going to use these things, make sure you look after the oil quality of the hydraulic system as your potential downtime is significant.
First of all, Hagglunds drives is NOT a motor it’s a hydraulic pump that has an output shaft mated to a gearbox that can turn just about anything that is required, industrial mills, lathes etc. these pumps are serviced on site through highly trained technicians. Good Day ...
I service them often and I had about ten minets to look over a service manual the first time.there is nothing complex about these. they work well if you keep the oil clean, realy , I mean clean.
This does not really tell us anything and I suspected it would be hard to find solid adequate informative material.. too much nonsense on youtube. Why not tell us a bit about it.
For all those who are wondering, this is a hydraulic motor with reversible direction of rotation. Direction of rotation depends on which way you pump hydraulic fluid. The green fluid flow is leakage line that drains the fluid that passed through tight clearances in design and actually lubricates parts. the very first scene shows that you have a hub, not a shaft. So you stick your shaft inside from your working machine, and that triangle is your moment arm that takes on herself reaction moment. It is made of two parts, two links, that lower pin passes through ear-hole attached to the structure or another part of machine that is stationary. Inside, you have pistons radially arranged in the part with the hub, and at the end of pistons there are rollers to reduce friction. As fluid pressure pushes piston, roller presses on the cam, and you get a tangetial force that turns the rotor. Of course, you have to have some kind of plate or similar device that divides the pressurized inlet into right pistons in position to develop torque of right direction. This plate is stationary, connected to the housing because cam is connected to the housing. The holes you see on the rotor on the bottom of the cylinders are both for inlet and outlet. So, when part of the pistons are producing force, others that are not pressurized, are pushed by the cam and liquid goes out. Finally, this is collected in a canal that goes around, and goes on the outlet hose. The scheme shows everything if you are a little bit familiar with the field. I am a 4th year student and had one semester of hydraulics and pneumatics and understand the design. I guess it's not meant for someone with absolutely no knowledge in the field.
This is like Sisu-nestemoottori and I drove to a 1977. Very very much power but not speed. Leader of the Sisu KB-45 off-road truck, weight of 6 tons. Tests indicated that, surprisingly lightweight, the terrain itself unequivocally tow trucks and tractors were able to pull the heavy weighing 8 tons of cannons terrain fluid motor. Conditions during the vehicle pulled even vetäjäänsä pushed forward.
How do i troubleshoot a radial piston motor, mine is a b240 black bruin and it seems like it loses torque when loaded, it stops completely but i still have pressure in the system, because the pump delivers pressure that opens the pressure relief valve. can i check the case drain line or the ports A and B.
jeff browne- the third line seems to be a case drain, though nothing is described here. Is it showing how efficient it is by the small amount of blow by from the case drain? Seems to be many hydraulically driven pistons that rotate the shaft. It would be nice to have some specs or explanation- which of course would be necessary to determine how it works and the efficiency. Seems like to many moving parts to be grandly efficient for a hydraulic motor.
I worked on Poclain excavators sixty years ago and they were using that same type cam motor on their equipment, very powerful motor at the time before piston type motors came along and the only other motors were gear type.
if this is a piston engine as i think it is, i feel there's too much wear on the wavy ring & piston contact surface. but in a frictionless universe, this might be cool edit: read the description as I should've, and yes it is a different type of piston engine
This constriction is proven and tried. It's fairly efficient and very powerful. Just visit their homepage. Hägglund have been around since many years and this is not a new invention.
The device has been around but the intended uses are being challenged. Take a look at a hydraulic lift on a cherry picker. The power of hydraulics is not in question. But the bucket on a cherry picker moves slowly and stays still most of the time. Therefore the oil is only working a bit, part time. But in a car the wheels need power continuously and the power required is substantial. Under those conditions oil tends to get very hot and it actually cuts into metal or most anything inside the system. Frequent, expensive, repairs are required. To make a long story short applications that existed in 1950 are almost identical to today's applications. New applications are rare.
Basically it is a hydrolic motor that delivers profound torque. Just imagine this motor with attached to cutting teeth chewing through concrete the way we do chew through saltines! And it is more powerful than that!
Obviously not, or I would not have asked. The video doesn't show what the fluid does between the inlet and the little piston things. Don't be a troll. If you have no useful input, keep your hateful comments to yourself.
There is are a few a couple of locations in the USA (Columbus Ohio for that matter.) As far as parts, they keep a lot of parts in stock. Usually just a matter of someone putting in a order.
looking at some of the cynical comments, makes me understand the reason why there is so much thought is spent thinking about toilet PAPER, They're Brain is where they use that, there too many of them! We wasted our time inventing Technology, it is beyond so many of the MENTALY deficient Lot They should enter Politics or get degree in THE ARTS B ARTS
Looks like Tucker's in-hub hydraulic drive motors. Something he was going to try to do if his first car had gotten off the ground. If it worked it would have been awesome.
MARCO Seattle used these for their outstanding fishing vessel winches. The video does not show you how this motor is so well adapted for rotary load handling. They could have done much better here; but these are beautiful motors.
"A torque converter is a type of fluid coupling which transfers rotating power from a prime mover, like an internal combustion engine, to a rotating driven load." [Wiki]
What you are calling pistons are not flush with the frame and could not be sealed. There may be pistons actuating them but those rollers or pins are not in the hydraulic environment.
These motors have been in service for more than one half of a century. They are very reliable and efficient. But Hagglunds is very proud of their product. If the case has a slight pressure applied, the motor free wheels. Although they are quite heavy they make a great drive for off-road machines.
another motherfuking oil motor? hahaha, this is incredible oil is the reason of the tragedy of this world, an this fukin enginers still design one and another fuking oil motors? dudes, you are crazy, at hell I think this motor was a magnetic or electric, and is just a dammed jew J.P Morgan oil motor instead wo wo, dudes....
No I thought that first, too. But then I realised that this is an hydraulic engine not a simply gear, so this is actually a nice Idea and the mobile parts aren´t so much more than on other hydraulic engines.
Сумасшедшее трение. Нужно будет постоянно менять фильтры, чтобы металлическая пыль не забивала механизм. Для работы двигателя нужен гидрокомпрессор такой же мощности, какую необходимо получить от двигателя и куча другой гидравлической аппаратуры. Очевидно, низкий КПД. Крайне сомнительное устройство.
+john brown Nop, those pods are just basically an elaborate transmission system between the propulsion engine and the propeller. This Hagglungs drive seems more like an hydraulic motor
