Liebherr-werk Ehingen Gmbh

Roland Bohnacker

Ulrich Wiedemann

Max Kenzelmann

Hans-Dieter Willim

Stefan Windbacher

Joachim Henkel

Julian Wehrstedt

Helmut Spaeth

Thomas Stangl

Clemens Norz

Hans Joachim Wenger

Markus Zeiler

Thomas Klaiber

Marcus Jechle

Oliver Ruoβ

Thomas Lerner

The disclosure relates to a dismantlable lattice piece for a crane boom. The lattice piece comprising two corner bar sides that are each formed by at least two corner bars that are fixedly welded to one another by a plurality of connection bars and comprising a transverse connection gibbable with the corner bar plates.

Dismantlable lattice piece for crane boom

The disclosure relates to a crane, in particular a lattice boom mobile crane, which comprises an upper carriage rotatable about a vertical axis of rotation and a floating ballast connected to the upper carriage via a floating ballast guide. The floating ballast guide comprises a drive for changing the distance of the floating ballast from the axis of rotation of the upper carriage. According to the disclosure, the floating ballast guide is connected to the upper carriage via at least one force transmission member. The force transmission member is configured to partially unload the floating ballast guide by an unloading force counteracting the weight force of the floating ballast, and to thereby introduce a corresponding counterforce into the upper carriage.

Crane with adjustable floating ballast

The present invention relates to a crane comprising a main boom and a rearwardly directed derrick boom for bracing the main boom, wherein a suspended ballast is directly or indirectly attached to the derrick head via connecting means, wherein at least one luffable, rearwardly aligned ballast adjusting boom is provided, which acts on the connecting means and influences the suspended ballast radius by its luffing angle.

Crane with adjustable suspended ballast

The invention relates to a foldable suspended-ballast guide for a crane with suspended ballast, comprising at least two lattice pieces which are pivotally connected to each other by means of at least one swivel joint, and a swivel drive for changing the swivel angle or for changing the ballast radius, wherein the suspended-ballast guide can be arranged on the crane via the first lattice piece, characterized in that the second lattice piece comprises at least one kink joint in order to kink the second lattice piece downwards or backwards in the direction of the crane to reduce the ballast radius.

Foldable suspended-ballast guide for a crane

The present disclosure relates to a crawler crane comprising at least one camera system, wherein the camera system is adapted to detect data relating to the relative position of the crawler crane to a suspended ballast and/or to at least one travelable ballast wagon.

Crawler crane

The present invention relates to a process for the assisted performance of crane movements by a crane with at least two boom elements that are movable relative to one another, whereby an auxiliary control module, after activation by the user, determines at least one target position of the boom system, determines the crane movements necessary for achieving the target position and, after active user confirmation, indirectly or directly activates the specific crane actuators for the performance of the crane movements determined by means of the crane control.

Process for the assisted performance of crane movements by a crane, as well as a crane

The present disclosure relates to an apparatus for stabilizing a crane, in particular a crawler crane, in an anchorage position, having at least one load coupled to a first boom of the crane to compensate a first torque introduced into the crane due to wind and having at least two additional supports arranged opposite one another to compensate a second torque introduced into the crane due to wind. The disclosure is furthermore directed to a corresponding additional support and to a crane having a corresponding apparatus.

Apparatus for stabilizing a crane

The present invention relates to a lattice piece for a crane boom comprising at least two lattice piece parts which are separably connected to one another in the longitudinal direction by means of one or more releasable connection points, wherein one or more lattice piece parts have one or more longitudinal tubes at least sectionally in the region of the connection points.

Lattice piece for a lattice boom, lattice boom and crane

The invention relates to a process for the calculation of relevant data for the operation of at least one crane, particularly of a mobile crane, whereby the system comprises at least one crane, a communication network, as well as a data processing center, whereby, first of all, one or more parameters of the crane are determined on the crane and these are transmitted to the data processing center through the communication network and, in the data processing center, one or more items of data that are relevant for the operation of the crane are computed and/or selected on the basis of the one or more parameters received from the crane and the relevant data computed and/or selected for the operation of the crane is transmitted back to the at least one crane, particularly to its crane control. Furthermore, the invention relates to a system for the calculation and/or selection of data relevant to the operation of at least one crane that is suitable for the implementation of the process in accordance with the invention.

Process and system for the calculation of data for the operation of a crane

The present invention relates to an angle-related method of monitoring crane safety during the setup procedure of a crane, wherein the crane has a sensor system and a crane control and the crane control receives one or more measured values from the sensor system during the setup procedure and compares the measured value or values received with at least one corresponding limit value and triggers a measure on an exceeding and/or falling below of the limit value or values.

Method of monitoring crane safety during the setup procedure, as well as crane and crane control

A lattice mast crane having a lattice mast boom which can be luffed up in a vertical luffing plane and which comprises a pivotal connection piece, a plurality of lattice pieces releasably connectable to one another, and a head piece, with the lattice mast boom having a two-strand or multi-strand region, wherein at least one side part is releasably arranged at the pivotal connection piece and the two-strand or multi-strand region is arranged directly or indirectly at the pivotal connection piece and/or directly or indirectly at least one side part.

Lattice mast crane and lattice mast boom

The present disclosure relates to a construction machine having an undercarriage; a superstructure rotatably supported relative to the undercarriage by a revolving roller connection; and a control system, wherein measuring devices are arranged in the revolving roller connection for the force measurement in the directions of pulling and compression, and the control system determines the force in the axis direction of the axis of rotation as well as the torque which is caused by the eccentricity of the force with respect to the axis of rotation from the detected measured values of the measuring devices. From this, improved monitoring of the operational safety and stability of such a construction machine is achieved.

Construction machine

Crane

This invention relates to a lattice mast crane with a lattice mast boom to be luffed up in a vertical luffing plane, which comprises a pivot piece, a plurality of lattice pieces releasably connectable with each other, and a head piece. In accordance with the invention, the lattice mast boom includes a first and a second region, wherein in the first region the lattice mast boom includes at least two first strands of interconnected first lattice pieces extending in parallel in longitudinal direction of the boom, which are connected with the pivot piece via a lower cross-beam and with the head piece via an upper cross-beam, and wherein in the second region the lattice mast boom only consists of a second strand of interconnected second lattice pieces.

Growing community of inventors

Blaubeuren, Germany

Roland Bohnacker