thats pretty simple then. we hired a digger a few years back which i drove for some fairly major gardening, and it was just today
i thought, how did that work!?
weird thought today, how are they powered?
i know they're hydraulic motors, but digger/excavators have the top part that spins round and round and round, and in the top bit, an engine, and
presumably a hydraulic pump attacted to the engine.
but sirely there's no hoses to the tracks? or they'd get tangled up?
when this truck's done i want to do something with rubber tracks, not road legal, just something for fun. it just got me wondering though
A big swivel right in the middle
but the 2 tracks have seperate motors, and speperate hoses, so looking at 4 hoses for the tracks alone (plus 1 or 2 for the dozer blade. i think thats
its name)
thats a lot of swiveling!
There is a swivel in the centre of the slew ring, the pipes feed into the top and out the bottom.
How it works is basicly, the swivel fits each over each other, so if you look at a cross section, it looks like tree rings.
So all the pipes rotate around the same axis.
Hope that's clear enough for you.
a few examples HERE
ah, i get it now thats pretty simple then. we hired a digger a few years back which i drove for some fairly major gardening, and it was just today
i thought, how did that work!?
I'm not sure how they are done in practice, but in theory the swivel would only need to accommodate one flow and one return line which could feed every motor (plus a bunch of electrical connections for control valves at each motor).
Why bother with the swivel bit .......you dont need it LINKY TO THE MACHINE
quote:
Originally posted by blakep82
i know they're hydraulic motors
quote:
you dont need it LINKY TO THE MACHINE