Große Turmdrehkrane

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overall view

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Larger power stations means bigger cranes. In China the FZQ1380 luffing jib climbing crane designed in 2001 by the Shandong Fenghui Equipment Technology Company, is suitable as the main lifting equipment for 300 to 600 MW power pant construction but is too small for the growing number of 1,000 to 1,300 MW plants. As a result it is no longer produced and has been substituted by the 75 tonne capacity FZQ1650 and, more recently, by the large FZQ2200 with 100 tonne capacity.

In contrast to the FZQ1650 a monoblock tower system cannot be used with the new crane.

Regarding transport and rigging problems associated with 4.2 x 4.2 m cross section towers, with help from the Harbin Industry University, a way was found to split down the tower elements in K-shaped panels und tubular core sections, which are slug-bolted together on the job site before being lifted by an auxiliary winch to the front opening of an external climbing frame. It means that pre-rigging of the tower is done under safer conditions at ground level.

The auxiliary 10 tonne erection allows the boom to be left at maximum radius during the complete climbing phase which makes for a safer climbing procedure. Like on the old Linden 8000 tower system the mast sections are connected by clamps surrounding the mast joints. A further benefit is the cross-shaped stationary undercarriage with large pontoons at the end of its outriggers.

For simple erection the inverted u-shaped ballast blocks are hung over the outriggers. No expensive conventional footing block with anchorage is required and the crane can be even installed above crossing pipes that lead to the boiler block.

For best performance there are stepless frequency regulated drives, planetary reducers inside Lebus winches, video surveillance, real-time monitoring and self diagnostic black box systems.

Walk-in electrical cabinets and an elevator running inside the tower are design features. The sophisticated heavy luffing jib crane is not only developed for its domestic market and it has CE certification.

Target export markets are East Europe, India and Indonesia. An FZQ2200 supplied by CITIC International Contracting Inc. was erected at the Campinas C Thermal Power Plant Phase II Project in Brazil in March 2009.(fom KHL Group magazine)

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This year Krøll will ship three K3000 and one K3500 models to Korean shipyard DSME, which already operates a number of Krøll units.
The crane has one trolley offering two reeving possibilities. With 10 line falls 40 to 100 tonnes can be raised at a speed of 12 to 22 m/min. For light loads up to 20 tonnes a two fall line operation is available with speed up to 110 m/min.

The K3000 cranes for DSME travel on 12 m and 16 m wide portal with an underhook height of 69 m and 75 m based on a 6.4 x 6.4 m tower system. Thanks to the sophisticated design, maximum erection weight of the crane components was reduced to 32 tonnes.

bearbeitet 8. Oktober 2009 von djlivus

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The latest addition to the Krøll product line is the K1000. Two units were erected at the Samsung shipyard in Korea at the beginning of 2009. Using the well proven M40 3.6 x 3.6 m mast system with external climbing cage, the cranes were jacked to 70 m and 60 m underhook height. Both cranes are based on a specially designed 9.5 m wide stationary portal with height-adjustable pyramids.

To move the Krøll cranes on site while erected, self propelled units can be used to drive under the portal, lift up the complete crane and move it. They can also be picked up by a floating crane at a wharf and and relocated. To make this popular movement by floating cranes easier all new cranes for DSME and Samsung have special lifting lugs at the tower head.

The new K1000s have 90 m jib and lift 40 tonnes to 20.1 m radius, while the tip load is 5 tonnes. Light loads up to 10 tonnes can be lifted on two falls, while maximum capacity needs eight falls. Fastest hoisting speed is 150 m/min.

[Gast Alwin]

picture of Wilbert Turmkrane's giant WT 1905L e.tronic at work

Ein alter Bekannter...