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AssigneeTerex Cranes Germany GmbH
InventorsRüdiger ZOLLONDZ, Alfons WECKBECKER, Fritz-Botho KÖSTER, Günter KARP, Hans-Peter FRANZEN
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A large mobile crane including an undercarriage. The undercarriage includes a middle section between tracks, wherein a distance between the tracks can be increased or decreased by the insertion or removal of expansion parts. The two tracks are connected on opposite sides of the undercarriage to permit movement of the large mobile crane. The undercarriage also includes a drive unit, a superstructure, one or more control stations, at least two main booms, at least one derrick boom, and at least two lifting devices and counterweights. The counterweights are either arranged separately of or mounted on the undercarriage. The large mobile crane further includes a circular track, and support rollers attached to the superstructure, wherein the support rollers ride on the circular track, and wherein the circular track is an integral part of the expansion parts.
A large mobile crane comprising an undercarriage, wherein the undercarriage comprises a middle section between tracks, wherein a distance between the tracks can be increased or decreased by the insertion or removal of expansion parts, said two tracks connected on opposite sides of the undercarriage to permit movement of the large mobile crane, a drive unit, a superstructure, one or more control stations, at least two main booms, at least one derrick boom, and at least two lifting devices and counterweights, wherein said counterweights are either arranged separately of or mounted on the undercarriage, and wherein the large mobile crane further comprises a circular track, and support rollers attached to the superstructure, wherein the support rollers ride on the circular track, and wherein the circular track is an integral part of the expansion parts.
A large mobile crane a crawler undercarriage, wherein the undercarriage comprises a middle section between tracks, wherein the distance between the tracks can be increased or decreased by the insertion or removal of expansion parts, wherein said tracks being connected on opposite sides of the crawler undercarriage, a drive unit, a superstructure, one or more control stations, at least two main booms, at least one derrick boom, and at least two lifting devices and counterweights, wherein said counterweights are either arranged separately or mounted on the crawler undercarriage, wherein the crawler undercarriage comprises at least one expansion part to expand a distance between the at least two carriers and further comprising intermediate pieces which can be inserted or removed to lengthen or shorten the at least two crawler tracks.
Dependencies are inferred from the claim text.