1- Crawlers can break the road. 2- The road isn´t wide enough. 3- Borders of the road could collapse using crawler. 4- Better spreading of ground pressure by means of wheels. 5- Better tracing of curves of the road with SPMT. 6- "Very fast" speed by wheels compared to crawlers. 7- Suspensions of SPMT can negociate changes of slopes. 8- Many others (top secret ;-D) Thanks for your questions.
here in saudi arabia we hav alot of projects here using that type of crane like lifting 230 ton vessel with 26 meter radius,is a piece a cake for that crane
The crane has auxiliary legs with jacks and the trailer can go up and down hydraulically too. Using both of them, the trailer can by positioned under the crane.
NASA used 4 of those blue tracked vehicles (without the crane assembly on top) as "pivot wheels" under the vehicle that transported shuttles from the assembly building to the launch posts
they use them in mines mainly. they rarely move from 1 mine to another and if they are moving a long distance they pull them apart into more manageable pieces
Really wished you showed more of the actual crane (even better would be whilst in operation) ..but atleast you a) did list manufacturer and model and b) weren't doing the simulated-earthquake *shaking* and *flailing about* with the camera all over the place, like so many other uploaders of vids do, thanks for that Love
@briansarty It's called jack and roll. The trailer is put under the lift at its lowest setting then lifted by way of mant hydraulic jacks at the wheels to lift the piece off of the ground. If you google "jack and lift" you will see better explanations. Many companys accomplish this.
@lupo0144 We need to contact with liebherr to do certificates in wich they said that the crane can lift up to 1400 tonnes (in special weather and movement conditions) and change some things in the liccon software of the crane (by liebherr engineers, of course).
If the transport were done directly with the crawler of the crane, road will be destroyed (for the pressures OF the crawlers versus presure of the wheels of the SPMT). Another question is the low speed of the crawler and the comsuption of fuel is higer and the bad steering of the crane instead of the selfpropelled modular transporter with all steering wheels (360º). It turns on a dime. Without the SPMT, the crane must be dismantled for change the job site. Greetings.
Man: i just have to drive this crane 30 miles up the road and i will be home darling. Women: i will leave your dinner in the microwave. Man: Dont wait up my love =)
one question...... lol How exactly did they get that thing on and off it's ride? i would think just lower it but it don't look like it would drop that low. i'd rly like to see it being offloaded... and in timelapes lol.. awesome crane.. thx for the upload :)
what was the transporting weight here in this video.amazing that you have thsi crane moved in elected condition. and that liebherr gave the ok for 1400to lift!! very impressive !!!!!!
Looking how high she is riding on the SPMT they must have lifted in more than one stage! So its a lift and block the crane up on the tracks. Lower the SPMT and blocked it and lifted again! The crane is a Liebherr LR 11350! max. lifting capacity 1,350 t at 12 m max. load moment 22,748 tm Main boom 30 m - 150 m Lattice jib 12 m - 114 m Derrick mast 42 m Superstructure-/central ballast 340 t/30 t Derrick ballast 660 t Engine output 641 kW Travel speed 0 - 1.08 km/h Total counterweight 990 t
@oluislopes2 Ha,ha. Yes, your right. It is like a gigant vacuum cleaner but more loudness and with more bass. The most important sounds in the engines are the fans of oil intercoolers.
I like your SPMT..is that gold hofer? Why not disassemble the crane?I think the track shoe is only a 110ton much easier if you load it in 12 lines hydraulic trailer it can travel fast
@briansarty We are going to take in to account next time. Thanks. The crane has four hydraulic jacks and the trailer was self positioned under it. Bye.
so... why not just move the crane using its inbuilt transport system "tracks"? is it cause the crane uses too much fuel and thus is expensive? so this is the alternative way?
@omgitschrislol The crane is too big and heavy to drive herself with curves, slopes, bridges, etc. The load per axle is lower using SPMT than the very high load from crawler. The road can be damaged with metalic crawlers instead of rubber wheels. Bye.
@rxhxtx what do you want to say with this???????for reconstruct the land???would be difficult to find a road without bridges and anything else wich can bear this at minimum 500to. transport
