Solenoids For hydraulic Mechanical Arm of ROV
Solenoids For hydraulic Mechanical Arm of ROV
(OP)
Greetings, My team is currently working on the design of a mechanical arm to be attached to the frame of the ROV, and want to have the entire hydraulic system onboard. The issue we are facing is that there will be two arm with each requiring 4 double-acting cylinders, and two solenoids per cylinder used, coming to a total of 16 solenoids. Is there any way to possibly reduce this number or possibly another hydraulic configuration?





RE: Solenoids For hydraulic Mechanical Arm of ROV
Have you considered servovalves or proportional valves?
Do you know what they are?
... Another hydraulic configuration? You mean, one other than the one that you haven't actually revealed? The one that is, or not, compliant with the design specification that you also haven't revealed?
What problem are you trying to solve?
Mike Halloran
Pembroke Pines, FL, USA
RE: Solenoids For hydraulic Mechanical Arm of ROV
RE: Solenoids For hydraulic Mechanical Arm of ROV
Thanks George, I have considered using a 4-way 3 position solenoid for each as well, which would reduce the number of solenoids, and would still operate the valves the same as the 3 way 2 position we have now for each, so that is def a possible route to go.
If it is helpful I can post a drawing of the arm.
RE: Solenoids For hydraulic Mechanical Arm of ROV
RE: Solenoids For hydraulic Mechanical Arm of ROV
RE: Solenoids For hydraulic Mechanical Arm of ROV
RE: Solenoids For hydraulic Mechanical Arm of ROV
Also, if you don't want to use proportional or servo valves, you could PWM regular four way valves, or even hydraulically parallel a biggish four way valve with a tiny four way valve, so you have coarse and fine control of each cylinder. Or you could put a fixed orifice in the supply to a biggish four way valve, and use a biggish on/off stop valve in hydraulic parallel with the orifice in order to provide coarse/fine control.
In either case, the multiple valves per axis could be run by a 'stepped' five position toggle, sort of similar to the 'regular/express' mode of some auto power window controls.
Mike Halloran
Pembroke Pines, FL, USA
RE: Solenoids For hydraulic Mechanical Arm of ROV
Peter Nachtwey
Delta Computer Systems
http://www.deltamotion.com
RE: Solenoids For hydraulic Mechanical Arm of ROV
will your pump/motor be submerged? if so, what are you going to do for a "reservoir" (we call them compensators when the entire system is submerged)?
wish I could help more- sounds like a fun project. I dont have much experience with low pressure hydraulics- industry standard is 3000psi or even 5000.
RE: Solenoids For hydraulic Mechanical Arm of ROV
RE: Solenoids For hydraulic Mechanical Arm of ROV
RE: Solenoids For hydraulic Mechanical Arm of ROV
I was curious as to whether anyone has a suggestion for a good option for a submersible pump for the scale of application we are doing for our project. As we'd like to have all our hydraulic system be on-board. The deepest we are going to go is 75 feet and only utilize 125 psi pressure supply from the pump. We have also considered that if we do not do use a submersible pump, we can design a pressure housing to house the unit on the ROV.