Lieb­herr in­stalls 3-MW wind power plant

Project Monitor - - FRONT PAGE - A BUSINESS COR­RE­SPON­DENT Lieb­herr mo­bile crane LTM 11200-9.1 LTM 11200-9.1 mo­bile crane dur­ing the in­stal­la­tion of an En­er­con E-101 wind power plant.

Karl Hartinger Kran­be­trieb GmbH & Co. KG in Warb u r g - Ri mbeck, North Rhine-West­phalia, Ger­many, re­lies on 1,200ton tele­scopic cranes from Lieb­herr. For lifting tasks that are usu­ally car­ried out us­ing lat­tice boom cranes, Hartinger uses the strong, flex­i­ble LTM 11200-9.1 and LTR 11200 tele­scopic cranes. In par­tic­u­lar, in the in­stal­la­tion of wind power plants, this has proved to be very prac­ti­cal.

Re­cently, Hartinger used the 9-axis LTM 11200-9.1 in Preussisch Olden­dorf to in­stall the 3MW En­er­con E-101 wind en­ergy plant. The heav­i­est part, the ma­chine hous­ing, had to be mounted at a hub height of 99m. The gross load in­clud­ing the lifting gear and hook block came to a to­tal of 66.5 tons. The tele­scopic boom with Y-pat­tern guy­ing was

ex­tended out to 82m in length and a 31.6 m lat­tice jib mounted on it.

The hy­drauli­cally luffa­ble top part, the 6.5m long luff­ing lat­tice jib, also came in handy for this job. Crane op­er­a­tor Tjerk Thomiczek en­thused: “The hy­drauli­cally luffa-

ble lat­tice jib is un­beat­able on this crane, be­cause I can set up the en­tire E-101 from a sin­gle po­si­tion. I never have to re­po­si­tion – that's a huge ad­van­tage. Over the course of the in­stal­la­tion, the ex­ten­sion was namely re­duced from 19 m to about 10m.”

The hy­draulic luff­ing jib also per­mits par­tic­u­larly fine changes in out­reach. That's es­pe­cially im­por­tant when in­stalling el­e­ments at ex­treme heights.

Ac­cord­ing to Lieb­herr, the LTM 11200-9.1 is the strong­est tele­scopic crane on the mar­ket and has the long­est tele­scopic boom in the world. The eight-part boom is fully au­to­mat­i­cally ex­tended to and fixed at the de­sired length.

Var­i­ous lat­tice ex­ten­sions are avail­able. The Yshaped tele­scopic-boom guy­ing sys­tem of­fers re­mark­able in­creases in load ca­pac­ity. The ac­tive, speed-de­pen­dent rear­axle steer­ing de­vel­oped by Lieb­herr is in­te­grated into the nine-axle chas­sis. Disc brakes en­sure greater safety and econ.

Lieb­herr's mo­bile cranes di­vi­sion in­cludes over 30 dif­fer­ent types of tele­scopic and lat­tice boom cranes on wheeled and crawler chas­sis.

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