20.01.2010
Radical tower crane at Bauma
GG Crane the pioneer of the radical twin jibbed tower crane will finally see the vision of its cheif executive, Patrick Gillis, become a reality.
The company has placed an order with Wilbert crane to build its first unit with two 82.5 metre jibs to show at Bauma later this year.
The concept was originally invented by Gaspard Gillis, Patrick's father, in the late 1960’s. The jib tips were equipped with large propellers which were used to turn slew and brake the crane.
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The large operator's cab allows him to view both jibs simoultaneously
The idea is that the while one jib is being unloaded the other is loaded thus providing a massive efficiency saving. The downside of course is the clear air space required.
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One application might be loading ships
The unit on display at Bauma will have two 82.5 metre jibs - over 165 metres span. It will be mounted on a 40 metre tower and will be sure to attract a good deal of attention.
Gillis has been keen to produce a modern version of his father’s concept for some time and has been looking for a subcontractor to build it. It now looks as though he has finally managed to turn the concept into reality. He is hoping to find at least http://www.ggcrane.com/movieloading.htmone interested buyer at the show so that the concept can be proved.
Click here to see concept video
I'm more like 30jahre crane operators with very god experience on Riess Large TDK cranes and I want to GG Crane go to the site because I am quite sure the GG Crane with two offer boom with many great Prejekte much more like other serienmäsige cranes with a boom.
I want to contact the GG Crane team to contact and this great project-wide realization, because the Basic Law cranes are coming forward for sure the best Invenstition.
E-mail: jurij.turmdrehkranfahrer @ gmail.com
Graeme Davison
Oh Lordy - Just seen the animation of the harbour application - clamshell buckets on a 2 fall line with seemingly no control line to open and close them and container handling with no means of counteracting container rotational alignment on the handling just suspended on a hook where ther are bound to swivel.. Oh don't get me started here..
But amazingly there's an 'archive' film - it actually looks like someone has built a working version of this machine a long long time ago - did the idea catch on ?? Answers on a post card.... !
Can't wait for a self erecting truck mount version to come along next :-)
Steve Sparrow
@ Graeme
You are absolutely right. Where is the benefit over existing designs?
Totally impractical, and absolutely unmanageable in the field.
I saw this thing in a 3D animation on You tube
http://www.youtube.com/user/ASOT007#p/a/u/1/0a_1IqLLjlk
and I assumed it was some college animation project. I didn't even bother to comment it seemed so ridiculous!
Maybe the designer/manufacturer can post a comment and let us know what it is we're missing.
Graeme Davison
Never seen such a ridiculous idea - 2 jibs, 2 loads moving at the same time and sitting facing forward where he is watching neither load with the attention it deserves to produce a safe lift. Added to that the restriction that loads must be 180 Degrees opposite of each other in order to sling / land at the same time. Anyone making as model of such a machine has more money than sense. Sorry to be negative but if an accident occurred while lifting 2 loads the driver could honestly only state he was paying 50% attention to the load suffering an accident. Why the use of propellers for slewing ? That must make jib allignment during eretion so easy vs a conventional slew motor ! Finally the load moment of this machine must surely vary acording to both load masses ad radii - how can he be sure that this machine will constantly be in ballance during jobs like a concrete pour when the mass of one of the loads would be decreasing during when concrete was being poured - this load must act as a counterweight to the second load surely and is decreasing with time. If I ever see one of these machines I don't want to stand anywhere near it ! Barmey !