Electric loader - GIF

[Altair]

Electric loader.




Previously:

Remotely-operated wheel loader - GIF
Remote controlled articulating forklift - GIF
Remote controlled mini crane - GIF
Remote-controlled tree trimmer - GIF
VR-aided self-loading logging truck - GIF

[BuffaloJohn]

There is something else going on here... The loader may be battery powered, but that cord is not enough to power the horsepower required to operate...

I will speculate that the loader spends lots of time off and this lets it recharge without having to go somewhere in particular to plug in.

[imohtep56]

There is something else going on here... The loader may be battery powered, but that cord is not enough to power the horsepower required to operate...

I will speculate that the loader spends lots of time off and this lets it recharge without having to go somewhere in particular to plug in.

Check out the Volvo L20 Electric.
Electric motor driveline (net) - 29.5 hp
Electric motor working hydraulics (net) - 18.77 hp
Standard bucket capacity - 1.05 yd³
~~~~ other interesting specs ~~~~
Operating weight - 10,031 lbs
Maximum travel speed - Standard - 12 mph
Battery voltage - 48 V
Battery capacity (standard) - 33 kWh
On board charging time 230 VAC 16A < 5 h
On board charging time 400 VAC 16A ~5
Off board charging time 400 VAC 32A ~2
Indicative runtime (depending on application) - 4-6 hours

[BuffaloJohn]

Well, that is not an L20:


So my theory is more likely than not since the video loader is much bigger so HP is also larger, so power required is larger, including to charge...

[mwmkravchenko]

Well, that is not an L20:


So my theory is more likely than not since the video loader is much bigger so HP is also larger, so power required is larger, including to charge...

Higher voltage, smaller cable diameter.

Mark

[nova_robotics]

Battery voltage - 48 V
Battery capacity (standard) - 33 kWh
On board charging time 230 VAC 16A < 5 h
On board charging time 400 VAC 16A ~5
Off board charging time 400 VAC 32A ~2
Indicative runtime (depending on application) - 4-6 hours

Something doesn't add up with the two 16A service numbers. 230V 16A should be around 8.7 hours. Unless they're talking 230V 16A three phase and 400V 16A single phase, then those two are equal. But if it's three phase then none of the numbers add up, so that can't be it. I think one of those marketing knobs copied and pasted the information incorrectly.

But from those ratings it does tell us the max charging rate of this machine is about 22 kW. I hate that festoon with a passion. Deep in my soul I hate that thing. It looks like a maintenance nightmare. But I think it's very reasonable to push 22 kW down that festoon without much trouble. Step it up to 600v so it's still reasonably human safe if there's a fault and you're only looking at about 21 amps three phase. You could use dirty old 8 gauge wire which gives you a pretty huge safety factor, and 8 gauge is not thick at all.

29.5 hp = 22 kW. So really the festoon would drive the whole machine at max power without draining the battery. Maybe that's what they did? Spec'd the machine with no battery at all, or a very reduced battery and are just driving it directly off of the festoon.

[Elizabeth Greene]

I wonder if there's a big accumulator in there to smooth out the load on the hydraulic pump?

[BuffaloJohn]

OK, I found it:

https://www.socma-forklift.com/elect...m-battery.html