Subject:
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Re: 4 section boom
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Newsgroups:
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lugnet.technic
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Date:
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Mon, 17 Jan 2005 00:49:59 GMT
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Viewed:
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2972 times
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Is this why on those big cranes (Demag AC 500) there are a small set of wisible
pulleys on the ouraaise left side of the boom? Thanks.
Thanks for the drawing. Very helpful!
Keep on building cranes!
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Message has 1 Reply:
 | | Re: 4 section boom
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| (...) Nope, those are cables for the various sensors that have to reach up to the boom tip. Modern cranes like the AC500 have the ability to extend each segment separately. They use a hydraulic ram inside and a series of locking devices. If you (...) (20 years ago, 17-Jan-05, to lugnet.technic)
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Message is in Reply To:
| | Re: 4 section boom
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| (...) I realised my explanation was less than perfect, so I have quickly expanded Jen's diagram to help: (URL) BTW, I am imagining a small motor will be running the first chain, because (...) The chains for sections 2 & 3 (blue and red on my (...) (20 years ago, 16-Jan-05, to lugnet.technic)
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