Previous in Forum: Estimation of Leakage Current   Next in Forum: Overhauling Load
Close

Comments Format:






Change Mode
Close

Subscribe to Discussion:

CR4 allows you to "subscribe" to a discussion
so that you can be notified of new comments to
the discussion via email.

Close

Rating Vote:







Add Vote
11 comments
Rating: Comments: Nested
sauravbabu
Power-User
Engineering Fields - Electrical Engineering - New Member

Join Date: Dec 2009
Posts: 247

Cranes

07/15/2014 9:12 AM

Why do we call some train light duty crane while others are heavy duty crane?

regs
Register to Reply
Interested in this topic? By joining CR4 you can "subscribe" to
this discussion and receive notification when new comments are added.

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
PWSlack
Guru
United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
Posts: 32175
Good Answers: 839
#1

Re: Cranes

07/15/2014 9:53 AM

With an undefined <...we...>, the question is unanswerable.

__________________
 "Did you get my e-mail?" - "The biggest problem in communication is the illusion that it has taken place" - George Bernard Shaw, 1856
Register to Reply
texasron
Guru
Technical Fields - Project Managers & Project Engineers - New Member

Join Date: Oct 2013
Location: Texas.Baytown
Posts: 697
Good Answers: 26
#2

Re: Cranes

07/15/2014 12:23 PM

Depends on the accepted division line between light and heavy.

__________________
 If you want to know how well a broom works you do not ask the guy selling the broom or the guy who designed the broom, you ask the guy using the broom.
Register to Reply
Crabtree
Guru

Join Date: Jul 2007
Location: Commissariat de Police, Nouvions, occupied France, 1942.
Posts: 2599
Good Answers: 77
#3

Re: Cranes

07/15/2014 2:50 PM

I give up. Why do you?

__________________
 Good moaning!
Register to Reply
jack of all trades
Guru
New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: Auckland, New Zealand
Posts: 8777
Good Answers: 376
#4

Re: Cranes

07/15/2014 4:17 PM

Put simply it relates to the duty cycle (or load spectra) of the crane (load lifted and lift cycles/hour).

Based on the FEM (ISO) standards the mechanical group classifications are Light, Medium, Heavy, and Very heavy.

This information can also be found in the crane literature or in the standards FEM 9.661 (ISO), FEM 9.511 (ISO), FEM 9.683 (ISO), etc depending on the type of crane.

More simple explanations can be found with a simple internet search of "wiki crane duty cycle" or similar.

__________________
 jack of all trades
Register to Reply
lyn
Guru

Join Date: Oct 2008
Posts: 42355
Good Answers: 1693
#5
In reply to #4

Re: Cranes

07/16/2014 12:33 AM

OP doesn't know how to search.

Too much effort.
Register to Reply
IdeaSmith
Guru

Join Date: Mar 2012
Location: Out of your mind! Not in sight!
Posts: 4424
Good Answers: 108
#6
In reply to #5

Re: Cranes

07/16/2014 2:31 AM

Psst! Its a Babu! Dont wake the sleeping spammer in him!

__________________
 Common Sense Dictates
Register to Reply
Hilton
Guru

Join Date: Jun 2011
Location: Mossel Bay, SA
Posts: 777
Good Answers: 21
#7
In reply to #4

Re: Cranes

07/16/2014 3:31 AM

Nice try Jack. How does this apply to trains though ? Pay attention to the question...
Register to Reply
jack of all trades
Guru
New Zealand - Member - Kiwi Popular Science - Weaponology - New Member Engineering Fields - Power Engineering - New Member Engineering Fields - Electrical Engineering - New Member

Join Date: Sep 2006
Location: Auckland, New Zealand
Posts: 8777
Good Answers: 376
#10
In reply to #7

Re: Cranes

07/16/2014 3:52 PM

I only deal with plain cranes not train cranes. Are you saying that for a train crane it isn't related to the duty cycle, or is this a guess?

__________________
 jack of all trades
Register to Reply
Tornado
Guru
Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
Posts: 21017
Good Answers: 795
#8

Re: Cranes

07/16/2014 5:01 AM

Lifting less than one ton is light duty; lifting more than 100 tons is heavy duty. Somewhere in between there is a sharp dividing line, but no one knows just where.

__________________
 In vino veritas; in cervisia carmen; in aqua E. coli.
Register to Reply
Calnet42
Power-User

Join Date: Feb 2009
Location: CT USA
Posts: 257
Good Answers: 14
#9

Re: Cranes

07/16/2014 2:04 PM

Some of these are lighter-duty than others:

http://www.geekologie.com/2012/07/giant-crane-lifting-a-big-crane-lifting.php
Register to Reply Score 1 for Good Answer
No more "Almost" Good Answers.
TonyS
Guru
United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#11

Re: Cranes

07/16/2014 6:08 PM

Does this count a train crane

__________________
 The reports of my death are greatly exaggerated.
Register to Reply
Register to Reply
Have a Different Question?
11 comments

"Almost" Good Answers:

Check out these comments that don't yet have enough votes to be "official" good answers and, if you agree with them, vote them!
Copy to Clipboard

Users who posted comments:

Calnet42 (1); Crabtree (1); Hilton (1); IdeaSmith (1); jack of all trades (2); lyn (1); PWSlack (1); texasron (1); TonyS (1); Tornado (1)

Previous in Forum: Estimation of Leakage Current   Next in Forum: Overhauling Load

Advertisement

Got Something to Say?
Ask a Question
Start a Discussion

Search this Forum
Electrical Engineering:
Go

CR4 Sections
Aerospace
BioMech & BioMed
Chemical & Material Science
Civil Engineering
Communications & Electronics
Education and Engineering Careers
Electrical Engineering
General Discussion
Instrumentation
Manufacturing
Mechanical Engineering
New Technologies & Research
Software & Programming
Sustainable Engineering
Transportation

Site Directories
Forum Directory
Blog Directory
User Group Directory
RSS Feeds

CR4 Rules of Conduct
CR4 FAQ
Site Glossary

Who's Online (77 right now)
Show Members
Advertisement