yes I was calculating everything correctly, just didn’t seem realistic. I’m going to give it a go. I’ll post results! Probably going to use a 12VDC motor instead of hydraulic. Much cheaper to assemble.
Nothing to do with a ship. lol. Here is a chain anchor. https://www.magnasourceinc.com/itemdetail/ZM077.100.0002?gad_source=1&gbraid=0AAAAApuTW9IVQZB-tO9poaX-40RKtLNmK&gclid=EAIaIQobChMIwaSn1_HYhwMVXhOtBh2ucAjzEAQYASABEgK66vD_BwE
Need some help.
Trying to lift a 10 lb box 20 feet.
Hydraulic motor driven.
Bucket attached to chain anchors on each end of the chain.
6” diameter sprocket on top and bottom, the bottom sprocket will be driven by a hydraulic motor.
How much torque does the hydraulic motor need? Weight of chain...
The pump is PTO driven off truck 1:1. So yeah ideally would run about 1500 RPM. I can put any size we want, there’s three pumps in total for other stuff on the truck.
And several more motors.
Variable flow would be easier then two different motors in this situation.
Two feet per second would be perfect.
And yes 240”/min while drilling.
I just chose that pump because that’s the slowest pump I could find with required torque. I have not purchased it yet, so I’m up for using anything.
I guess what I’m thinking. There will be times when your going back up to latch another drill stem that moving a few feet per second would be better. I just need the capability of crawling. If this don’t work I need some better suggestions.
“The maximum speed of 240”/min will require 240” / 29.75” = 8.07 RPM.
At full flow, 8.07 RPM requires a motor capacity of 19.36 cu” * 190 / 8.07 = 455.8 cu”/rev.
455.8 cu" = 7469 cc/rev = 7.5 litre. And yes, it will have a very thick shaft.”
So your saying this motor is way too small?
I was...
The sprocket measurement I posted is to the top of the teeth, your math is bottom of the teeth, which is more accurate, but I didn’t have that measurement. Yes, pitch is 1.75”.
You figured the pumps peak int capacity.
See attachment. I went by its maximum rated continuous use. I’d rather have a...
Relief setting will depend which pump we decide to go with. Was looking at a 19.36 Cu in./rev pump that would operate at a maximum rating of 2031 PSI. 3450 in/lbs torque. I believe is roughly 11 HP.
190 RPM rated at 15.9 GPM.
11 HP x 1650 lbs = max pull of 18,150 lbs
Chain is rated at 15,700...
It’s only 4” wide, fixed-on both ends to bearings.
A clevis with a safe working load of 30 tons is only hung with a 1-3/4” pins
Pretty sure it will work.
Not sure why my photos are blurry. Anyways, issue we are having is getting the speed slow enough to use it. Low RPM high torque pumps are like 240 RPM, and we were installing without gear reduction. Even with a flow controller set as low as possibly it’s still to fast.