blakep82
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| posted on 3/9/10 at 10:33 PM |
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digger tracks
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
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hearbear
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| posted on 3/9/10 at 10:50 PM |
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A big swivel right in the middle
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blakep82
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| posted on 3/9/10 at 10:56 PM |
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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!
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fha772
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| posted on 3/9/10 at 11:04 PM |
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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.
http://www.ppcmag.co.uk/forum/viewtopic.php?f=47&t=6743&start=105
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dinosaurjuice
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| posted on 3/9/10 at 11:08 PM |
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a few examples HERE
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blakep82
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| posted on 3/9/10 at 11:14 PM |
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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!?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Liam
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| posted on 3/9/10 at 11:15 PM |
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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).
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mangogrooveworkshop
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| posted on 4/9/10 at 05:32 AM |
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Why bother with the swivel bit .......you dont need it LINKY TO THE
MACHINE
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mcerd1
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| posted on 4/9/10 at 07:35 AM |
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quote:
Originally posted by blakep82
i know they're hydraulic motors
you should look up 'Hydrostatic' drives, they work of the hydrostatic head of the oil (pressure) and not off the flow of the oil
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Danozeman
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| posted on 4/9/10 at 09:14 AM |
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quote:
you dont need it LINKY TO THE MACHINE
That is awesome. I bet its loud in your ears!!!
Dan
Built the purple peril!! Let the modifications begin!!
http://www.eastangliankitcars.co.uk
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