Sep 16, 2008, 4:36 AM
Has anyone got any pictures of a Mobile Crane putting up a Tower Crane? I'm in desperate need for a project at Uni.
Sep 26, 2008, 6:00 PM
there are pictures here in other threads you could look into them..i saw one awhile ago.
Sep 27, 2008, 1:12 AM
jamieson places thread, page 7. picture of Stampedes mobile hangin the tower cranes boom
Sep 28, 2008, 3:51 AM
I've got a whole erection sequence on my imageshack account. I'll post the links in a bit.
Sep 28, 2008, 3:55 AM
Ok, here's the photo sequence- a hydraulic boom mobile crane erecting a Kroll K-154 Tower crane.
And so it begins..Sadly, I got there too late to see the tower and tower peak/turntable go up, but here it is:
One of the massive counterweights. I think these weigh somewhere in the neighborhood of 44-4800 pounds apiece, and there's eight of these things. Just look at the size of the men handling it.
Can I get a piece of tail here..
Hoisting the counterjib- this is the "tail" of the crane- the motors, hoist winch, and counterweights are all located back here.
Here you see somebody placing one of the massive steel pins that attach the counterjib to the turntable. I've seen some of these pins up close- they're almost as thick as my forearm, and so heavy that I needed two hands to pick one up.
Now they're fastening the pendants together- the thick steel bars that hold up the main jib and counterjib. Again, the steel of these pendants is very thick, in order to hold up the great weight of the crane's structural members.
Now they're placing three of the counterweights. This is unusual, in many cranes the counterweights are the
last thing that go on.
Assembling the main jib-
This was the most tedious part of the whole erection, at least from a watcher's standpoint. Not only did they bolt together the sections of the jib, but they also had to assemble the catwalk that runs over the top of it, and begin the process of rigging some of the hoisting cables.
An uplifting experience..
They've finally gotten the main jib assembled and off the ground..We've almost got a whole crane here, folks!
Hey you, get offa my...Jib!
Check out this brave soul..good thing he's got that harness on!
Dangly bits part 2..
Now they're fastening the main jib pendants in place..Note that the jib is being held at an upward angle to facilitate this. Once the pins are fastened, the mobile crane will let the jib down, and the pendants will take over the work of holding the jib up.
Baby got back!
Now that the main jib's in place, the rest of the counterweights are being added. Here's the last one, for a grand total of eight.
What's a crane gotta do to get "a head" in this world?
Finally, here comes the cab! Up close, this cab's a little bigger than a phone booth, with just enough room for the operator to sit. Needless to say, acrophobes or claustrophobes need not apply.
Ahh, together at last!
And so it ends- All that remains now is to hook up the electrical parts and reeve the hoist cables, attaching the hook in the process. But aside from that, the crane is now structurally complete.
At the end of this, there was one man left standing up there. He began to climb down, finally. As he cleared the first tower section under the turntable, this crane weathervaned for the first time..I love the timing, almost as if it were waiting for that last human to come down.
Oct 5, 2008, 1:28 AM
enjoy, i took this last year
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