21.07.2009

Liebherr Ehingen celebrates 40 years

Last month, Liebherr celebrated 40 years of manufacturing mobile cranes at its Ehingen plant with several spectacular customer days showing off its new manufacturing facilities and new crane models.

Around 2,500 customers and guests from all over the world enjoyed two open days and guided tours around the production facility which produces all Liebherr's wheeled mobile cranes and about 40 percent of the world’s All Terrain cranes - around 1,750 per year. Along with most of its crawler cranes.
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An impressive array of various AT, crawler and truck mounted Liebherrs

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Christoph Kleiner, general manager Ehingen, welcomes customers to the event

Several new cranes were unveiled including the world premier of the 1,200 tonne capacity LTR 11200 telescopic crawler and the 60 tonne LTF 1060 truck crane – available early next year - which completes its LTF product line-up.

The LTR 11200 has been specially designed for wind generation work using the seven section, Telematik 100 metre long telescopic boom and most of the superstructure components from the nine axle LTM 11200-9.1 mobile crane. The narrow track crawler undercarriage comes from the LR1350-1 to negotiate the narrow tracks between the individual wind-power units while remaining fully equipped for operation.
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The impressive LTR 11200

As an alternative, the ‘short’ 55 metre, four-section telescopic boom is available.

A maximum of 126 metre luffing fly jib can be attached for combined heights of up to 189 metres. The Y-pattern boom guying system greatly increases load capacity and it can be used with either the short four-section or long eight-section boom.

The maximum crawler width is 4.8 metres with 1.2 metres wide pads although 1.5 metre wide pads are an option as is a hydraulic steering aid which presses the crawler track down at the centre of the track frame reducing the ground contact area of the inside track making it easier for the crane to turn corners.

During crane operation the LTR 11200 is supported on star-pattern/cruciform outriggers with a footprint of 13 metres by 13 metres. Both crane travel and operation of the outriggers are by radio remote control.
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Part of the AT production line with the circular chassis rotator

The main boom can be installed without an assist crane, thanks to four optional support cylinders that are used to raise the boom off its trailer which can then be driven away. The crane can then drive into the boom and pinned into position.

A Liebherr turbocharged six-cylinder diesel engine is used on the superstructure of the LTR 11200 with an output of 270 kW (367 hp). The hoisting gear assemblies, which operate in a closed hydraulic circuit, provide the high line pull value of 167 kN and a maximum hoisting speed of 125 metres per minute at the outer-most rope layer.
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The 60 tonne LTF 1060-4.1

The new LTF 1060-4.1 truck-chassis crane has a maximum capacity of 60 tonnes, a 40 metre telescopic boom and a 16 metre double folding fly jib. Providing a maximum tip height of 56 metres with an outreach of 48 metres.
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A line of almost completed ATs

Liebherr says the new LTF 1060-4.1 is a cost-effective alternative in the taxi crane category, because it can travel on a four-axle chassis with its entire 10.2 tonnes of counterweight, without exceeding nine tonne axle loads at the front and 10.2 tonnes on the rear axles. The crane’s overall weight remains below 42 tonnes.

By reducing the counterweight carried, the overall weight can be kept below 33 tonnes.
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Customers came from all over the world, including a strong contingent from Ireland, Scotland and England

The new LTF has been designed for the Scania Type CB 8x4 MHZ four-axle chassis and has a separate superstructure engine with a power output of 129 kW (175 hp). It also uses the new Liebherr LICCON 2 crane control system with the mobile multifunctional control and display unit (a BTT or Bluetooth terminal) available for set-up fiunctions.

The superstructure of the LTF 1060-4.1 will also be used on the new 60 tonne capacity LTR 1060 telescopic boom crawler crane - the smaller brother of the first model in this series, the LTR 1100 introduced four years ago.

Very brief details were also given of two further cranes to be launched at Bauma 2010 at the earliest – the 45 tonne, three axle, conventional drive LTC 1045-3.1 city crane and its largest conventional crane to date – the 3,000 tonne capacity LR 13000.

By ‘conventional’ Liebherr means that the unit will still be capable of moving on site with all of its counterweight in place, in the same way as its other large crawler cranes can. Designed along well-proven The crane will use 25 tonne slabs that can fit into and can be transported in 20 foot containers, to make up its maximum 1,850 tonne of ballast.
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New 25 tonne ballast blocks for the 3,000 tonne capacity LR13000

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Part of the entertainment

The celebrations also included an impressive parade of Liebherr cranes built since 1961 and demonstrations of the new 350 tonne AT and LR1600/2.
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The oldest machine on show - the 1961 AK40 which had a 6 tonne capacity, 7.5metre boom, 25kW engine and a top speed of 20mph

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The 1971 AMK40T-60 - a 30 tonne capacity, 24 metre boom crane with 51kW engine and top speed of 60km per hour

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The TK6 dates back to 1977 and has a lifting capacity of 25 tonnes, 24 metre boom (32 metres with jib).

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This 45 tonne LT1045 dates back to 1981

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The LG1200 is a 200 tonne capacity, 188kW engine, 12x8x8 steer crane from 1981 capacble of reaching 91 metres

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Largest 'oldie' on display - this 300 tonne LT1300 with a 68 metre boom and 56 metre jib, 390kW engine and 16x8x4 dating from 1988

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The 1984 LTL1080 had an 80 tonne capacity, 34 metre boom and 10 metre jib, 188kW engine and a top speed of 30 km per hour

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This 1998 LTM 1030/2 has a lift capacity of 35 tonnes, a 30 metre boom (45 metres with jib), 205 kW engine and an 80 km per hour top speed

At the end of the show, the LTR 11200 demonstrated how to cross a six metre open gap. As the pictures show, the centre of gravity is moved rearwards by fully raising the boom allowing the machine to track over the gap. By slewing the boom and then repeating the process, the crane is able to safely track across the gap.
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The new LTR 112000 telescopic crawler

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The 6 metre gap

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The LTR 11200 tracks part of way across the 6 metre gap

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By raising the boom, the centre of gravity moves to the rear

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With the boom fully raised, the crane can track over the gap

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Made it!

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The process continues by slewing the boom and then raising it placing the centre of gravity over the left support

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Almost fully over