Abstract: A crane having an undercarriage, a superstructure pivotable about a slewing axis relative to the undercarriage, a counterweight unit and a counterweight adjustment device. The counterweight adjustment device includes a telescopic frame which is fastened to the superstructure and has a telescopic longitudinal member, a counterweight unit arranged to be displaceable along the frame, a drive unit for displacing the counterweight unit and a kinematic unit to telescope the frame in a driven manner. A jetty is fastened to a rear end, remote from the slewing axis, of the longitudinal member, the counterweight unit is displaceable along the frame in the region of the superstructure as far as the jetty, the counterweight unit is able to be fastened to the jetty and the counterweight unit is able to be telescoped in and out on the jetty with the frame.

Abstract: A crane includes an under carriage, an upper carriage, a rotary connection, by means of which the upper carriage is connected with the under carriage to rotate around an axis of rotation, a jib to be connected with the crane and erected around a jib axis, and a device connecting the upper carriage with the under carriage with at least one force-transmitting element. The at least one force-transmitting element is designed passively in such a way that it transmits forces between the upper carriage and the under carriage when a pre-determined load condition of the rotary connection is reached.

Abstract: A crane having an undercarriage, a superstructure pivotable about a slewing axis relative to the undercarriage, a counterweight unit and a counterweight adjustment device. The counterweight adjustment device includes a telescopic frame which is fastened to the superstructure and has a telescopic longitudinal member, a counterweight unit arranged to be displaceable along the frame, a drive unit for displacing the counterweight unit and a kinematic unit to telescope the frame in a driven manner. A jetty is fastened to a rear end, remote from the slewing axis, of the longitudinal member, the counterweight unit is displaceable along the frame in the region of the superstructure as far as the jetty, the counterweight unit is able to be fastened to the jetty and the counterweight unit is able to be telescoped in and out on the jetty with the frame.

Abstract: A lattice mast element for a crane comprises at least two longitudinal elements and at least one transverse element interconnecting the longitudinal elements and at least one bracing element for bracing the lattice mast element by interconnecting the longitudinal elements and/or the transverse element, wherein the longitudinal elements and the transverse element define a load bearing surface of the lattice mast element and the longitudinal elements are each configured as a two-dimensional load bearing structure.

Abstract: 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.

Abstract: A crane comprises an undercarriage, an upper carriage arranged on the undercarriage, a rotary connection for rotatably mounting the upper carriage on the undercarriage about an axis of rotation, as well as a support unit attached to the upper carriage for increasing the distance of a tilting edge from the axis of rotation, so that the crane has an increased structural stability and an increased load capacity.

Abstract: An undercarriage for a vehicle crane includes multiple supports that are pivotably articulated on the chassis between a working arrangement and a transport arrangement, and includes a rotary joint component for the rotatable connection of a superstructure to the undercarriage, with the rotary joint component determining a transport height of the undercarriage, which completely uses a maximum admissible transport height.

Abstract: A crane includes an under carriage, an upper carriage, a rotary connection, by means of which the upper carriage is connected with the under carriage to rotate around an axis of rotation, a jib to be connected with the crane and erected around a jib axis, and a device connecting the upper carriage with the under carriage with at least one force-transmitting element. The at least one force-transmitting element is designed passively in such a way that it transmits forces between the upper carriage and the under carriage when a pre-determined load condition of the rotary connection is reached.

Abstract: A crane comprises an undercarriage, an upper carriage arranged on the undercarriage, a rotary connection for rotatably mounting the upper carriage on the undercarriage about an axis of rotation, as well as a support unit attached to the upper carriage for increasing the distance of a tilting edge from the axis of rotation, so that the crane has an increased structural stability and an increased load capacity.

Abstract: A lattice mast element for a crane comprises at least two longitudinal elements and at least one transverse element interconnecting the longitudinal elements and at least one bracing element for bracing the lattice mast element by interconnecting the longitudinal elements and/or the transverse element, wherein the longitudinal elements and the transverse element define a load bearing surface of the lattice mast element and the longitudinal elements are each configured as a two-dimensional load bearing structure.

Abstract: 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.

Abstract: The object of the invention is to reduce the amount of investment required for the usage-optimized configuration and installation of large cranes. This object is achieved by a large mobile crane having an undercarriage, a drive unit (16), a revolving superstructure (18), one or more control stations (17), at least two jibs (3), at least one counter-jib (4), at least two lifting arrangements (22) and counterweights arranged separately or on the basic structure, characterized in that the load-bearing parts of the crane (3, 4, 20) and the mobility-specific parts (5, 6, 7) are of modular design and can be supplemented by exchangeable and/or supplementary parts, wherein the structural units (modules) used essentially correspond, or are similar, to existing standard-crane components, and an increase in load-bearing capacity can be achieved by arranging a number of these in the large crane.

Abstract: A mobile crane includes an undercarriage with a middle section and two parallel crawler carriages; a superstructure on which a boom is mounted, the superstructure being connected to the undercarriage by a rotary joint; two longitudinal outriggers connected to the undercarriage and extending in the longitudinal direction between the crawler carriages; and two transverse outriggers connected to the undercarriage and extending outside the crawler carriages. One of the longitudinal outriggers has an end with a transverse beam supported by spaced apart outrigger cylinders which provide an extended tipping edge to further stabilize the crane.

Abstract: A mobile crane includes an undercarriage with a middle section and two parallel crawler carriages; a superstructure on which a boom is mounted, the superstructure being connected to the undercarriage by a rotary joint; two longitudinal outriggers connected to the undercarriage and extending in the longitudinal direction between the crawler carriages; and two transverse outriggers connected to the undercarriage and extending outside the crawler carriages. One of the longitudinal outriggers has an end with a transverse beam supported by spaced apart outrigger cylinders which provide an extended tipping edge to further stabilize the crane.

Abstract: A large mobile crane includes a revolving superstructure, a main boom hinged to the superstructure, and a derrick boom hinged to the superstructure. A modular counterweight system includes a traveling counterweight and a non-traveling counterweight connected to a crossbeam suspended from the distal end of the derrick boom so that the non-traveling counterweight is activated before the traveling counterweight.

Abstract: A mobile crane includes an undercarriage with a middle section and two parallel crawler carriages; a superstructure on which a boom is mounted, the superstructure being connected to the undercarriage by a rotary joint; two longitudinal outriggers connected to the undercarriage and extending in the longitudinal direction between the crawler carriages; and two transverse outriggers connected to the undercarriage and extending outside the crawler carriages. One of the longitudinal outriggers has an end with a transverse beam supported by spaced apart outrigger cylinders which provide an extended tipping edge to further stabilize the crane.

Abstract: The object of the invention is to reduce the amount of investment required for the usage-optimized configuration and installation of large cranes. This object is achieved by a large mobile crane having an undercarriage, a drive unit (16), a revolving superstructure (18), one or more control stations (17), at least two jibs (3), at least one counter-jib (4), at least two lifting arrangements (22) and counterwvejghts arranged separately or on the basic structure, characterized in that the load-bearing parts of the crane (3, 4, 20) and the mobility-specific parts (5, 6, 7) are of modular design and can be supplemented by exchangeable and/or supplementary parts, wherein the structural units (modules) used essentially correspond, or are similar, to existing standard-crane components, and an increase in load-bearing capacity can be achieved by arranging a number of these in the large crane.

Abstract: A large mobile crane includes a revolving superstructure, a main boom hinged to the superstructure, and a derrick boom hinged to the superstructure. A modular counterweight system includes a traveling counterweight and a non-traveling counterweight connected to a crossbeam suspended from the distal end of the derrick boom so that the non-traveling counterweight is activated before the traveling counterweight.