Eaton 70160 pump

[Geochurchi]

Greetings, here are some pics or the current setup, looking for any suggestions to possibly to control that pump electrically 12 VDC or for better less sloppy linkage control , the aluminum bar controls the forward,reverse, and neutral position of the pump arm
Thanks

 

[oldnslo]

A machine shop should be able to make a lever arm that clamps on that shaft tightly.
Or can you saw cut what you have and then use a square U-bolt to pinch it tight?

 

[Geochurchi]

Thanks, one way or the other it needs to be tight

 

[Sportsman762]

If I were me I would put in a cable control system so that the operator in the tender can have the control right by them.
For a lever I would use a Buyers B206301001 control. These lock in a center detent and you have to push down on the handle to move it out of center. This would be a good safety feature for your operation.

https://www.buyersproducts.com/product/single-axis-remote-valve-control-with-detent-1112

Then i would pair it with the appropriate length control cable.

Remote Valve Control Cable | Buyers Products

Buyers Products Remote Valve Control Cable features a RVC Adapter Input with a Bonnet output.

www.buyersproducts.com

The friction in the cable will allow a smooth operation when starting and stopping.

 

[Geochurchi]

Hi would agree with the control, the biggest problem is a solid connection at the pump shaft end, I have talked to Buyers Products at a local supplier, they suggested that I contact the local Hydraulics Service Co. that they supply, which I have, I gave them pics of this connection and now we are waiting, do you have any thoughts, also thinking that this control should have capability to install electrical interlock for a positive Non Start, just a second safety.

 

[Sportsman762]

You could install a switch that the lever contacts when in neutral. The switch would be between the start switch and the starter solenoid. When depressed the switch would complete the starter circuit so that the engine could not be started "in gear" as the circuit between the starter switch and the starter solenoid would be open. When it was in "Neutral", then you could start the engine as the circuit from the starter switch and the engine would be complete allowing the starter switch to function as normal.

 

[Geochurchi]

Thanks for the reply, problem with that is we have to identify neutral position of the shaft on the pump not the shaft, need some sort of positive connection to the shaft to work from, not the sloppy connection we currently have.

 

[Sportsman762]

Can you see the dataplate on the pump?
On page 8 of the PDF below it states that the 10th position of the model number is the designator for the control shaft. A square shaft is an option.

https://hydrosta.nl/uploads/documents/MediumDutyClosedLoopPistonPumps.pdf

Once you verify what control input you have I would look into having a machine shop build something.
I will use cultivator bar clamps as example (they are for 3"+ tubes but general concept is the same. But I would add a long rod with holes on the top to attach the control clevis to.

I would have it made so that you have multiple holes on the upright rod so that you can adjust sensitivity / speed easier.
For fine tuning the neutral position you screw the clevis on the control cable end in or out. Or you screw the control cable in or out.

 

[Geochurchi]

Can you see the dataplate on the pump?
On page 8 of the PDF below it states that the 10th position of the model number is the designator for the control shaft. A square shaft is an option.
View attachment 4510386

https://hydrosta.nl/uploads/documents/MediumDutyClosedLoopPistonPumps.pdf

Once you verify what control input you have I would look into having a machine shop build something.
I will use cultivator bar clamps as example (they are for 3"+ tubes but general concept is the same. But I would add a long rod with holes on the top to attach the control clevis to.
View attachment 4510387View attachment 4510388
I would have it made so that you have multiple holes on the upright rod so that you can adjust sensitivity / speed easier.
For fine tuning the neutral position you screw the clevis on the control cable end in or out. Or you screw the control cable in or out.

Thanks, this is the best concept we have seen so far, and I just found out we have a new member that does machine work.

 

[Sportsman762]

@Geochurchi So this has been pestering me most of the day on were I have seen something like what I was describing. Then I remembered! Valve Handles!
here is what I was trying to explain. This unit who's photo I stole off ebay has a 8 point hole so you had more options. I think a 4 point hole would hold better. I doodled some holes on the lever to show what I was trying to convey. Unless you feel confident in you measuring and calculations I would make the lever longer than you think you will need and just move the control cable down until you find the right hole. Then cut the extra holes off if you want.