Tiltrotator mini excavator

MorastCNC · Post by **MorastCNC** » Thu Oct 30, 2014 2:54 pm

This is the beginning of project tiltrotator for my mini excavator
Very nice cuts with Hypertherm PM65

/Bj?rn

BensPlasmaAu · Post by **BensPlasmaAu** » Thu Oct 30, 2014 9:54 pm

Keep posting pictures Bjorn, I'm keen to see how this goes.

MorastCNC · Post by **MorastCNC** » Fri Oct 31, 2014 2:41 am

More pictures

beefy · Post by **beefy** » Fri Oct 31, 2014 4:02 am

Hi Bjorn,

I hope too you can show some more pics as you manufacture it. Did you cut the worm gear set yourself. If so what metal did you use and did you get it hardened afterwards (self or hardening shop). Is that a geroller / gerotor type motor (low speed high torque), nothing will stop that gear wheel from turning LOL

I've got a little digger too, made a grab and a rake for mine.

Good luck with your project, love to see more,

Keith

MorastCNC · Post by **MorastCNC** » Fri Oct 31, 2014 5:58 am

Hi Keith

Both the worm gear and the motor is from a Ramsey winch
I'll try to get a smaller motor in the future, this motor is only for try to see if everything
is working as I have planned

/Bj?rn

hanix · Post by **hanix** » Fri Oct 31, 2014 11:58 am

This is my mini excavator rotor made from forklift rotator.
Se also
http://www.plasmaspider.com/viewtopic.php?f=3&t=12968

Hanix

MorastCNC · Post by **MorastCNC** » Fri Oct 31, 2014 3:56 pm

Hi Hanix

The rotor looks nice!
Seems that you have cut some details

/Bj?rn

MorastCNC · Post by **MorastCNC** » Fri Oct 31, 2014 5:46 pm

The box

MorastCNC · Post by **MorastCNC** » Sat Nov 01, 2014 8:18 am

The gearbox completed
Next challenge will be the plates for the tilt
Think I must do some lineboring after welding

pipeliner · Post by **pipeliner** » Sat Nov 01, 2014 9:52 am

Excellent work !!! Love the root rake also.

MorastCNC · Post by **MorastCNC** » Sat Nov 01, 2014 3:23 pm

More details

MorastCNC · Post by **MorastCNC** » Wed Nov 05, 2014 4:08 pm

Little closer to first testrun

hanix · Post by **hanix** » Sat Nov 08, 2014 12:44 pm

This is great, keep posting on this project and more pictures.
How are you going to control this?

I disconnected the hydraulic jack that was used to extending the track frame and connect it to the rotor motor.
And discontented the horn button and, I am going to use that to control the tilt jack.

Thanks
Hanix

MorastCNC · Post by **MorastCNC** » Sun Nov 09, 2014 9:42 am

The control of rotor will be with a 6/2 valve on the boom swing

/Bj?rn

MorastCNC · Post by **MorastCNC** » Wed Nov 12, 2014 4:17 pm

Waiting for tiltcylinder

MorastCNC · Post by **MorastCNC** » Sat Nov 22, 2014 2:25 pm

More details

MorastCNC · Post by **MorastCNC** » Mon Dec 01, 2014 12:19 pm

Now it's very close to first testrun
I have to mount a 6/2 valve for the boom swing
and a crossover valve to reduce the pressure for the hydraulic motor

B Holmes · Post by **B Holmes** » Thu Dec 04, 2014 2:58 am

Great project! Thanks for taking the time to post all the pictures.

quadboy · Post by **quadboy** » Thu Dec 04, 2014 9:05 am

Nice work, I like how you mounted the tilt cylinder.

MorastCNC · Post by **MorastCNC** » Sat Dec 13, 2014 2:36 pm

First testrun

http://youtu.be/6abl7qCBYSc

It works great, but something have to be adjusted in the hydraulic circuit
It takes 180 bar to move the rotor, I have mountet a 6/2 valve on the boom swing and it
takes 180 bar to move the boom swing to.
So I think there is some flow reduction somewhere,but I can't find it.

Post by **East German** » Sat Dec 13, 2014 3:13 pm

Well done good work

Regards Peter

hanix · Post by **hanix** » Sat Jan 24, 2015 10:08 am

Hey Bj?rn haw you figured the hydraulic problem out ?

Thanks
Hanix

illusivedf · Post by **illusivedf** » Sat Jan 24, 2015 2:55 pm

Cool Project

MorastCNC · Post by **MorastCNC** » Sun Jan 25, 2015 5:19 am

Hi Hanix
I finally solved the hydraulic problem
It is a loadholdning valve for the boom sving in the main valve
So what I have to do was switching the functions so the tilt now is operated
with the boom sving valve.
Now it works, but a little problem is to learn to operate the tilt with the left switch instead
of the right switch, but I think practice will solve the problem

Here how it works:
http://youtu.be/peTQkcSnq88

Some pictures of the bucket I made

Bj?rn

Post by **East German** » Sun Jan 25, 2015 6:45 am

exquisite work

congratulations

Regards Peter