Abstract: The present invention relates to a mobile crane having a travelable undercarriage, a superstructure rotatably supported on the undercarriage, and a counterweight device couplable to the superstructure, wherein the counterweight device comprises a carrier plate on which one or more counterweight elements can be stacked, and at least one connection element extending substantially perpendicular to the carrier plate for coupling the carrier plate to the superstructure.

Abstract: The invention relates to a mobile crane, that comprises a mobile undercarriage and a superstructure rotatably supported on the undercarriage and having a boom and a ballasting device. The ballasting device picks up or places down one or more counterweight elements by means of a hoisting device. In accordance with the invention, a placement device is provided that is connected to the undercarriage and comprises at least one movable placement part that is movable from a travel position into a placement position and vice versa. In this respect, the travel position is characterized in that the length of the undercarriage is reduced, and the crane is travelable on the construction site, whereas the placement position is characterized in that counterweight elements can be placed on the placement part by means of the ballasting device and the length of the undercarriage is increased in comparison with the travel position.

Abstract: The invention relates to an apparatus for assembling and disassembling a mobile crane boom, in particular a telescopic boom, that comprises a support device that is attached or attachable to the mobile crane and/or to a transport vehicle on which the boom can be placed and fixed or locked, a roller cart on which the boom can be placed and that is movably stored or storable on the transport vehicle, and a guide mechanism that is attached or attachable to the transport vehicle and by means of which the roller cart is actively movable in parallel with the longitudinal axis of the boom. The invention further relates to a mobile crane having an apparatus in accordance with the invention and to a method of assembling a boom stored on a transport vehicle to a mobile crane using the apparatus in accordance with the invention.

Abstract: The invention relates to a tread device for walking on a crawler carrier of a work machine having a caterpillar drive, wherein the tread device has a holder that can be installed at the crane, in particular at the crawler carrier, at which at least one tread surface is provided, characterized in that the tread surface lies on the upwardly disposed surface of a crawler chain of the caterpillar drive in the state installed at the work machine and the lower side of the tread surface comprises at least one sliding element to ensure a sliding or rolling relative movement between the crawler chain and the tread surface.

Abstract: The invention relates to a method for recognising a setup state of a crane in which a crane setup state input manually into the crane controller is compared with the actual current setup state, comprising the steps of determining the target position of at least one target crane element installed on the crane on the basis of a crane setup state stored in the crane controller and at least one crane sensor value, transmitting the one or more pieces of target position data to a mobile flying device, moving the flying device into a region in the immediate vicinity of the target position of the target crane element and detecting and identifying a current crane element located there using a detection means, and identifying the current crane element detected in the detection region and establishing whether the detected crane element corresponds to the target crane element.

Abstract: The disclosure relates to a method for determining the number of rope reevings of a pulley block with a top block and a bottom block, wherein the rope path of at least one rope line of the pulley block, which is covered during a time window, is detected and compared with at least one rope path of a further rope line covered within the time window and/or with the height difference between top block and bottom block changed within the time window, in order to determine the number of rope reevings of the pulley block.

Abstract: The disclosure relates to an assembly head for a telescopic boom that can be separated into an inner and an outer boom set and that is reversibly mountable at an inner telescopic section of the outer boom set. The assembly head comprises a pulley head having deflection pulleys and a telescopic tube section that is arranged the pulley head, that can be pushed into the inner telescopic section from its end, and that has a substantially smaller length than the inner telescopic section. The disclosure further relates to a separable telescopic boom having an assembly head in accordance with the disclosure, to a mobile crane having a telescopic boom in accordance with the disclosure, and to a method for the self-assembly of an assembly head in accordance with the disclosure at the outer boom set of a telescopic boom.

Abstract: This invention relates to a large crane with an at least two-part main boom, wherein a lower and an upper part of the main boom are pivotally coupled to each other an articulation point. The invention furthermore is directed to a method for erecting or depositing a corresponding large crane.

Abstract: The present disclosure relates to a telescopic boom for a crane, wherein the telescopic sections of the telescopic boom each comprise at least one main telescopic part and at least one additional telescopic part and wherein the main telescopic part and the additional telescopic part are arranged above one another. The disclosure further relates to a crane having a corresponding telescopic boom.

Abstract: The disclosure relates to a ballast device for fastening to a crane having first and second ballast elements. The first ballast element has first connection means for a releasable fastening to the crane, while both ballast elements are releasably connected to one another via second connection means. According to the disclosure, the first ballast element comprises an assembly device having abutment elements to which an abutment means can be attached to raise the ballast device. The abutment elements are arranged or are positionable such that the abutment means can be selectively attached to the assembly device for raising only the first ballast element above its center of gravity or for commonly raising both ballast elements above their total center of gravity. The disclosure further relates to a mobile crane having at least one such ballast device.

Abstract: The disclosure relates to a mobile crane comprising a superstructure having at least one bearing point for pinning on a boom, wherein the bearing point comprises two spaced apart side parts that each have a bore for receiving the pin; and wherein the boom comprises at least one connection part that is provided with a bore and that can be introduced between the side parts such that a common connection pin can be pushed through the bores of the side parts and the connection part, wherein the clear width between the side parts is larger than the width of the connection part of the boom, and wherein a step pin is provided as a connection pin and its formed shoulder forms an abutment for the connection part of the pinned boom in the pinned position.

Abstract: The present disclosure relates to a mobile crane that comprises an undercarriage having a chassis and comprises a superstructure that is rotatable about a vertical axis relative to the undercarriage and has a telescopic boom at whose tip a boom head is arranged. The boom has holding means at one side for the support of a folding boom that can be releasably installed at the boom head. The boom laterally has a console and a holding element arranged between the console and the boom head. The folding boom is pivotable about a vertical axis of the holding element for the installation at the boom head, while it is supported on the console. In accordance with the present disclosure, a first securing device is arranged in the region of the console by means of which a movement of the folding boom deviating from a pivot movement about a vertical axis can be limited. The present disclosure furthermore relates to a folding boom for a crane.

Abstract: The invention relates to a mobile, in particular portable, pin pulling device for pulling/inserting pins for connecting components of a construction machine, in particular of a crane, wherein the pin pulling device is designed in compact construction and has at least one electric drive having a rechargeable battery and a linear actuator drivable by the drive to move at least one pin.

Abstract: The invention relates to a mobile crane with a two-part jib and to a method for aligning the boom system of such a mobile crane. The invention relates to a mobile crane with a multi-part flight boom, wherein a first jib part is hinged to the main boom in a rockable manner, and at least one second jib part is secured to the first jib part in an articulated manner. A bracing which is guided from the upper chassis to the jib is provided for aligning the jib, said bracing running over at least one intermediate bracing support mounted on the first jib part to the at least one second jib part.

Abstract: 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.

Abstract: The present disclosure relates to a lattice piece for a lattice boom having four corner bars that are connected to one another by a plurality of posts and diagonals, wherein the lattice piece has a rectangular cross-section having two longer and two shorter sides. A cross-sectional section of the corner bars is designed as a hollow section that has a larger extent in the direction of the longer side of the lattice piece than in the direction of the shorter side of the lattice piece. At least one side of the corner bar section has a stabilization structure in the form of a joint, a kink, a bend, or a rounded portion. The present disclosure further relates to a lattice boom comprising at least one lattice piece in accordance with the present disclosure and to a work machine having such a lattice boom.

Abstract: The invention relates to an apparatus for ballast weighing on a crane, comprising at least two ballasting cylinders that are equipped to lift/lower the ballast and that each comprise at least one pressure transducer in the region of the piston and/or rod side, and comprising at least one evaluation unit that is equipped to calculate the mass moved by the ballasting cylinders from the pressures detected by the pressure transducers on retraction and/or extension of the ballasting cylinders, excluding the friction forces occurring in the ballasting cylinders. The invention furthermore is directed to a method for calculating the ballast weight of a crane by means of a corresponding apparatus.

Abstract: The present apparatus relates to an apparatus for the guying of a lattice boom of a crane, in particular of a mobile crane, comprising a frame and two connection elements connected thereto, wherein the frame has first attachment means for a releasable connection of the apparatus to a guying of the crane and wherein the connection elements have two attachment means for a releasable fastening of the apparatus to the boom. In accordance with the invention, the apparatus can be assembled at the boom for assembly thereat and can be removed again after the boom has been assembled. The present invention further relates to a respective method for the in the air assembly and for the restoring to the original state and the guying of a lattice boom by means of the apparatus in accordance with the invention.

Abstract: A measuring device for load sensing in a lifting-cable-based hoist, in particular a crane, having at least one pulley for deflecting the lifting cable of the hoist, a fastening means in the form of a cable loop, at the end of which the pulley is mounted so as to be rotatable about its roller axis, and at least one measuring element for sensing a force applied to the pulley.

Abstract: The invention relates to a telescopic boom comprising a coupling section, on the side of which at least two luffing-cylinder mounts are provided for fastening luffing cylinders to the telescopic boom. The bearing plates of the luffing-cylinder mount transition into a metal-plate box structure, the metal-plate box structure being composed of three partial luffing-cylinder boxes.