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Subject: 
Re: New Crane...
Newsgroups: 
lugnet.technic
Date: 
Thu, 21 Feb 2008 22:25:02 GMT
Viewed: 
12482 times
  
In lugnet.technic, Gordon Bentley wrote:
   I can’t see from your photos how you’re stopping the main structure lifting off the base.

Correct me if I’m wrong, but crane turntables hold the superstructure down so the load moment is transferred to the crawler base. I’ve seen photos of cranes tipping and they don’t fall off the turntable, they take the base with them.

Yes, that is correct.

   I’ve had a couple of (incomplete) goes at a crawler, and I’ve used two turntables, one inverted, with the centres tied together and to the superstructure, and the outer rings locked into the base. That way, the superstructure can’t detach from the base.

See also my technique - this allowed me to lift the whole crane base up by the superstructure.

ROSCO



Message has 1 Reply:
  Re: New Crane...
 
(...) Great crane Rosco, shame their's no accompanying text. Steve (17 years ago, 21-Feb-08, to lugnet.technic, FTX)

Message is in Reply To:
  Re: New Crane...
 
I can't see from your photos how you're stopping the main structure lifting off the base. Correct me if I'm wrong, but crane turntables hold the superstructure down so the load moment is transferred to the crawler base. I've seen photos of cranes (...) (17 years ago, 21-Feb-08, to lugnet.technic)

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