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Subject:	Re: ok, quick question about crane lifting lines...........
Newsgroups:	lugnet.technic
Date:	Sun, 27 Jun 2004 21:46:00 GMT
Viewed:	2248 times

In lugnet.technic, Max Maxwell wrote: > What's the reason behind "parting the line" on the line that lifts the hook on a > crane? I see this is mostly done with fairly large cranes (crawler cranes > especially). The more lines you have, the less force there is per line. Check this out: http://science.howstuffworks.com/pulley.htm -TJ

Message has 1 Reply:

		Re: ok, quick question about crane lifting lines.........
(...) increasing the number of lines means operating the hoist is slower - a 10 line hook will take 10 times longer to raise and lower than a single line. That is the reason many heavy lifting cranes have multiple hoist lines - multiple line for (...) (20 years ago, 28-Jun-04, to lugnet.technic)

Message is in Reply To:

		ok, quick question about crane lifting lines.........
What's the reason behind "parting the line" on the line that lifts the hook on a crane? I see this is mostly done with fairly large cranes (crawler cranes especially). Max (20 years ago, 27-Jun-04, to lugnet.technic)

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