How do they build cranes

[Wryel]

Wryel, i'm sorry - completely off topic but your sig intrigues me. care to explain?

Did you not see my old one? Apparently its a copy of the Mylo album cover...

 

[Borris]

In order to build a crane, you need to use a silghtly smaller crane, so on and so on until you go back to the beginning and find the first crane which was assumbled with fishing rods

Like matrioshki, in fact.

 

[cheets64]

Ainscough cranes is based in my village they have some big cranes.

Ainscough's flagship, the 1000 tonne Liebherr LTM11000D, has erected the UK's tallest onshore wind turbine for Ecotricity, based in Stroud, Gloucestershire.

The 1000T, rigged with 160 tonnes of counterweight with a 47.6 metre boom, complete with 31.5 metre derrick mast and 56 metres of luffing fly, hoisted the hub of the Enercon E66 turbine 85 metres in to the air for fixing, before finally erecting the huge 66 metre blade into position.

 

[William]

Liebherr are the one of the stalwart companies of German heavy engineering along with DeMag, which due to us getting rid of all of our heavy industry, most big sized construction jobs in the country are run by the Hun and the Polish.


Our fridge is made by Liebheer oddly enough. It has a counterweight to stop me drinking all the lager in it...

 

[cheets64]

Its big, the Liebherr, its got a few back up trucks that follow it every where, I dont think its been to the depot near me but I have been in a few when i did work experience there, the power in the engines is awesome .

 

[pyro]

Those big boys sound like something Jeb can use for a jump or two

 

[Teifiterror]

Tower cranes are either built by mobile cranes brought on-site to construct the crane. As a tower is likely to be there for the duration of the works, the cost of bringing in the mobile is small in comparison to the costs saved by the tower. Some tower cranes build the top first and slowly jack up and install the next section in underneath.

There are other self erecting tower/mobile cranes around. These have a complexish rigging system of cables that as the crane rises the boom etc extend in sync. Looks pretty cool as well.

Mobile crawlers etc can be just as difficult to erect. And require a lot of room as the booms need to be on the ground when erected and also when not in use/high winds.