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 01:25:46 GMT
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Viewed:
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2995 times
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In lugnet.technic, Ross Crawford wrote:
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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 listen while such a crane is extending it’s boom you can hear a loud
click as each section is locked in place, and the ram is retracted to extend
the next one.
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This series of pictures shows an AC100 extending it’s boom one section at a
time:
ROSCO
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Message is in Reply To:
 | | 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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