Author Topic: cranes  (Read 285 times)

Thomas Stellwag

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cranes
« on: October 31, 2020, 22:44:28 »
the fully bended crane on a vessel is the one where the hook broke during setup. It was planned to be the stronges floating crane in the world
Thomas Stellwag

Akira

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Re: cranes
« Reply #1 on: October 31, 2020, 23:29:49 »
The first one is amazing!  So surreal.
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Jack Dahlgren

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Re: cranes
« Reply #2 on: November 01, 2020, 05:20:55 »
I’m trying to figure out what happened. Looks like the jib went past vertical and the whole thing folded over itself. Cranes are dangerous, but you would think they would have the best engineers and operators out for a crane like this.

Thomas Stellwag

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Re: cranes
« Reply #3 on: November 01, 2020, 22:27:03 »
Akira, thanks for commenting

Jack, during the test of this 5000t crane, they lifted a pontoon out of water (5500t) and the hook broke.
With the sudden load release the double boom swinged back beyond its normal shape by just folding down on the back side.
They speak of €50-100 million damage to crane and vessel. This hook was supplied by another company, there are ongoing investigations as far as I know.
According to the planning this vessel should work since a while in Scotland to install off shore wind rotors.
Thomas Stellwag

Luc

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Re: cranes
« Reply #4 on: November 01, 2020, 23:10:07 »
Amazing images and background story!

Erik Lund

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Re: cranes
« Reply #5 on: November 02, 2020, 09:09:26 »
Looks like the hook was pulled out,,, wow! Hope no one got hurt
Well captured!
Erik Lund

Thomas Stellwag

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Re: cranes
« Reply #6 on: November 02, 2020, 10:39:58 »
Luc,  thanks for your comment

Erik,  news about this came from visitors of the test and some regional newspapers. Liebherr marketing department stayed hidden. There was no dead reported, some injuries, no idea how serious they were. Looking at it, the rotating junction pin between the real hook and the roll frame did not do its job on the lower side.
Thomas Stellwag

Akira

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Re: cranes
« Reply #7 on: November 02, 2020, 11:03:04 »
Jack, during the test of this 5000t crane, they lifted a pontoon out of water (5500t) and the hook broke.
With the sudden load release the double boom swinged back beyond its normal shape by just folding down on the back side.
They speak of €50-100 million damage to crane and vessel. This hook was supplied by another company, there are ongoing investigations as far as I know.
According to the planning this vessel should work since a while in Scotland to install off shore wind rotors.

Wow, I didn't noticed but did felt the design of the crane depicted in #3 very unique...
"The eye is blind if the mind is absent." - Confucius

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Erik Lund

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Re: cranes
« Reply #8 on: November 02, 2020, 11:12:28 »
Yes, that's what it looks like.

Do you have close up of the hook?
Erik Lund

Fons Baerken

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Re: cranes
« Reply #9 on: November 02, 2020, 15:02:57 »
Liebherr thought they made kitchen appliances ;D
Set of sharp images, your Leica, Thomas?

Thomas Stellwag

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Re: cranes
« Reply #10 on: November 03, 2020, 22:28:45 »
Akira, most people on the port cruise did not realize it, passing by in about 200m
Erik,  I´ve looked to my pics, there is nothing that shows real details of the broken zone
Fons,  you see they make as well the gear to lift their fridges onto your house boat
Thomas Stellwag