Liebherr unveils new 700-tonne crawler crane


After 12 years and over 200 items produced, Liebherr’s LR 1600/2 crawler crane now has a successor.

The design of the LR 1700-1.0 – with a most lifting capability of 700 tonnes- is predicated on its 600 tonne predecessor and options related dimensions. In lots of respects, the brand new crane even exceeds the efficiency of the LR 1750/2. 

The primary fashions of the brand new crane can be delivered round mid-2021, across the identical time as the ultimate LR 1600/2 items can be delivered. As deliveries of the LR 1750/2 will even stop after virtually 20 years of manufacturing, the highly effective LR 1700-1.0 will even assume its place under the 800 tonne LR 1800-1.0.

The brand new LR 1700-1.0 from Liebherr combines the advantages of economical transport of 600 tonne class crawler cranes with the efficiency of 750 tonne class lattice increase cranes and likewise options all of the improvements of Liebherr’s crawler crane developments from the previous few years.

Enhanced mobility and compact dimensions

Liebherr has utterly redesigned the bottom machine for the brand new LR 1700-1.0 based mostly on the scale of the LR 1600/2. Its monitor width is barely bigger than its predecessor at 8.7 metres, while the size of the crawler carriers has grown to 11.35 metres. 

The LR 1700-1.0 can also be accessible with Fast Connection as an possibility. Which means the transport weight of the slewing platform (with out the SA body and winches) could be decreased to round 42 tonnes, effectively under the restrict of 45 tonnes to make sure low value heavy haulage. The identical applies to the crawler carriers, which, with their two metre crawler pads and 4-fold drive, weigh in at simply 43 tonnes. 

The width of the assorted parts is one other vital characteristic for financial mobility. All of the transport items for the bottom machine, together with the pivot part, are not more than three metres in width. Solely the highly effective H lattice sections on the primary increase are wider than this, at 3.5 metres. Nevertheless, these can be utilized to move the smaller sections to scale back the variety of transport autos required. 

For patrons in nations the place transport widths of over three metres aren’t potential, Liebherr can even provide the increase for the LR 1700-1.0 solely with three metre broad lattice sections.

One other low value characteristic for operators of the LR 1600/2 is that numerous gear parts from the predecessor crane may also be used for the brand new LR 1700-1.0. These embody the S sections for the primary increase, the luffing jib, the 600 t head, a number of winches, hook blocks, ballast slabs and the runner.

Excessive efficiency for business and wind energy jobs

The idea of the excessive efficiency of the brand new 700 tonne crane is the brand new base machine, which delivers between 10 and 15 % extra lifting capability. Moreover, the three.5 metre H lattice sections on the backside of the primary increase considerably enhance the lateral stability of your entire system.

Which means the brand new LR 1700-1.0 turns into the brand new benchmark within the 600 to 750 tonne class for lattice increase cranes each for traditional business work and likewise for wind energy. The increase could be raised to a top of as much as 198 metres, comprising the primary increase at 102 metres and a luffing jib at 96 metres. These lattice sections allow the crane for use in purely predominant increase mode with a size of as much as 162 metres.

For erecting wind generators, the LR 1700-1.0 can obtain a most predominant increase size of 165 metres utilizing extra H sections. A hard and fast jib of as much as 15 metres in size could be connected to this. The lifting capacities of the brand new crane on this space are on a par with the LR 1750/2 with SX system.

A Liebherr six cylinder diesel engine which develops 400 kW / 544 bhp is used to energy the LR 1700-1.0. The engine satisfies the brand new stage V emissions directive and may also be configured to adjust to the rules which apply in nations exterior of Europe, for instance Tier 4 for the USA or stage IIIA for low regulated nations.

The newest derrick system with modular ballast trailer

The V-frame and VarioTray have confirmed their value on the LR 1800-1.0 and LR 11000 crawler cranes. These revolutionary techniques have due to this fact additionally been used on the LR 1700-1.0. VarioTray is a small ballast pallet, which could be unbolted shortly and simply when mandatory. This avoids the necessity for the tiresome stacking and unstacking of ballast slabs.

The V-frame ballast system is a hydraulically adjustable folding body which allows the ballast radius of the LR 1700-1.0 to be infinitely adjusted between 13 and 21 metres. A inflexible ballast information system is due to this fact now not required for giant radii.

Liebherr has one other innovation relating to ballast trailers – the brand new modular “M-Wagon” ballast trailer will not be solely appropriate to be used with the LR 1700-1.0, but additionally with the LR 1800-1.0 and LR 11000 crawler cranes. Since ballast trailers are usually used fairly not often, this paves the way in which for vital financial savings. 



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