waste and recycling Liebherr extends its Crane Ranges Liebherr is extending its product range of telescopic crawler cranes by a 220-tonner; the model was presented to the public for the first time at the 2012 Customer Days at the Liebherr plant in Ehingen. The new LTR 1220 The new LTR 1220 offers a maximum lo<strong>ad</strong> capacity of 220 tonnes and a telescopic boom 60 metres long, which means it outdistances any telescopic crawler cranes offered by the competition both with regard to lo<strong>ad</strong> capacity and boom length. It combines the <strong>ad</strong>vantages of a telescopic crane with those of a crawler crane. The crawler travel gear provides excellent off-ro<strong>ad</strong> capacity and superb manoeuvrability, as well as allowing the crane to travel under full lo<strong>ad</strong>. The <strong>ad</strong>vantages of a telescopic crane over a lattice boom crane are the short set-up times, easier transport, and the variability of the boom system. The telescopic boom is extended or 18 PLANT & CIVIL ENGINEER The LTM 1750-9.1 all-terrain crane retracted fully automatically and rapidly to the desired length, allowing it, for example, to pass easily beneath obstacles. The LTR 1220 also provides the <strong>ad</strong>vantage that heavy lo<strong>ad</strong>s can be telescoped with the boom, which in principle is not possible with lattice boom cranes. And because a crawler crane, unlike a mobile crane, does not need to be supported, it can be rapidly set up on site and can go into action immediately. Applications In terms of design, the 60 metre telescopic boom is derived from the tried and trusted LTM 1220-5.2 mobile crane, and with the Liebherr Telematik telescoping system it can be extended fully automatically to the desired length. The telescopic boom can be extended by a bi-parted swing-away jib, 12.2 to 22.2 metres long, which can be lengthened still further by means of two 7-metre lattice sections. As well as this, a 7-metre lattice section is also available, which is fitted between the telescopic boom and the swing-away jib, in order to raise the connection point of the jib, capable of being luffed by up to 45°. As an option, the swingaway jib can also be <strong>ad</strong>justed hydraulically. Under full lo<strong>ad</strong>, the jib can be moved between 0° and 45°. Operators of the LTM 1220-5.2 mobile crane can also use existing equipment elements on the new 220-tonne telescopic crawler crane. The travel gear of the LTR 1220 can be hydraulically telescoped out from the crawler carrier width of 4.5 metres to the intermediate width of 5.88 metres or the maximum width of 7.25 metres. Lo<strong>ad</strong> tables are provided in the LICCON control system for all three crawler widths. On uneven ground the LTR 1220 can even operate with side inclination angles of up to 4°, likewise secured by the LICCON control system. The new 220-tonne Liebherr telescopic crawler crane is powered by a seven-cylinder in-line Diesel engine, which provides a capacity of 230 kW/312 HP and torque of 1300 Nm. The hoist gears provide a high cable pull of 105 kN, which means rapid operational sequences can be ensured. The basic machine, with crawler carriers one metre wide, weighs in at about 90 tonnes and has a minimum overall width of 5.01 metres. Without crawler carriers, the unit weighs about 54 tonnes, including the jack-up cylinders and the transverse beams, and is only 3 metres wide and 3.2 metres high. By removing the transverse beams, the weight can be reduced still further, to about 47 tonnes, which means that economical transport is guaranteed even in areas with restrictive weight regulations. The crane is capable of assembling itself. The basic unit is driven to the site on a lowlo<strong>ad</strong>er, and then supports itself on the jack-up cylinders. Central ballast, transverse beams, crawler carriers, and superstructure ballast are installed without any need for an auxiliary crane. All terrain Crane Also on show at the customer open days, which attracted more than 2,000 customers from all over the world, was the new LTM 1750-9.1 all-terrain crane. This 750-tonne mobile crane complements the Liebherr range between the highly successful models LTM 1500-8.1 and LTM 11200-9.1. One particular feature of the new nine-axle unit is the fact that the complete telescopic boom can be carried during travel on public ro<strong>ad</strong>s. To help make operation even more economical worldwide, account was taken in the design concept of the LTM 1750-9.1 of the very widely differing transport weights and axle lo<strong>ad</strong> variations. When the LTM 1750-9.1 arrives on site with its telescopic boom and the front supports, it can fit the rear supports itself, without the need for an auxiliary crane, with the aid of the optional <strong>ad</strong>ditional support on the rear of the vehicle. In this situation, the crane set-up functions are powered by the engine in the carrier. The drive system for the crane superstructure, consisting of the engine and the hydraulics system, together with an integrated ballasting device, is transported to the site separately, fitted to the crane by self-assembly, and connected by quick-action couplings. All the crane functions for working operations are powered by the superstructure engine. In the event of a problem with the superstructure drive, all the crane functions can then be driven by the engine in the chassis, simply by rearranging the plugging of just three electrical connections, rapidly and easily. This innovation has been introduced for the first time on the new LTM 1750-9.1. WST Liebherr 1pg.<strong>indd</strong> 18 16/07/2012 10:53
Experience the Progress. Material handling equipment. � Maximum efficiency through progressive technology � Sophisticated machine concept for maximum productivity � Quality components manufactured by Liebherr � Ergonomic workspace for consistent high performance Liebherr-Ireland Ltd. Unit 23 N Greenogue Industrial Estate Rathcoole, Co. Dublin Phone: 01 458 7650 info.lgb@liebherr.com www.liebherr.com The Group 2009-506_062 A316 PaCE.<strong>indd</strong> 1 30.05.12 10:26 Liebherr A316 <strong>fp</strong> <strong>ad</strong>.<strong>indd</strong> 1 25/06/2012 15:38
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