Abstract: A jib part (10) for a crane, in particular a mobile crane, a includes an inner shaping shell (15), tensile elements (11) within hollow profiles (12) and a sheathing, made from a layer of transverse fibers (13) covered by a protective or slide layer (14). The tensile elements (11) are biased and fitted with sensors and/or actuators.

Abstract: A jib part (10) for a crane, in particular a mobile crane, comprises a shaping shell (15), tensile elements (11) and a sheathing (13, 14), wherein the tensile elements (11) are biased and fitted with sensors.

Abstract: A telescopic crane jib-slide bearing part comprises a receiver and a filler compound introduced into the receiver. A telescopic crane jib-slide bearing includes one or more such slide bearing parts.

Abstract: A tensioning system for a mobile telescopic crane having a telescopic mast includes at least one tensioning cable for bracing the telescopic mast and at least one tensioning winch mounted on the crane superstructure for tensioning the cable. The tension in the cable creates a pressure bias within the mast. The winch is movable with respect to said superstructure of the crane and movement of the winch relative to the superstructure also imposes tension on the tensioning cable.

Abstract: A telescopic crane jib part has a top profiled part and a bottom profiled part joined together at joining points. The top profiled part and the bottom profiled part, on a side of the cross-section defining one-half of the cross section that is symmetrical with respect to the vertical mid-plane, each comprise, starting from the joining point of the profiled parts, at least a less pronounced outwardly curved segment and a more pronounced outwardly curved segment. Mutually adjoining end segments of the top and bottom profile parts meet at the joining points and extend outwards forming an angle.

Abstract: An upper cross-sectional part for a telescopic part of a crane comprises a central flat cross-sectional element and, connected to the central flat cross-sectional element on each side thereof, a first outwardly curved cross-sectional element; a second flat cross-sectional element; a second outwardly curved cross-sectional element; and a third flat cross-sectional element.

Abstract: The invention relates to a telescopic crane jib part (1) with a top profiled part (10) and a bottom profiled part (20) comprising curved cross-sectional portions (12 to 19; 22 to 28), and the top profiled part (10) and the bottom profiled part (20) on a side of the cross-section, which is symmetrical with respect to the vertical mid-plane (3), each comprise, starting from the joining point (2) of the profiled parts (10, 20), a less pronounced outwardly curved segment (14, 24) and a more pronounced outwardly curved segment (16, 26), and the mutually adjoining end segments (12, 22; 14, 24) at the joining point (2) extend outwards at an angle.

Abstract: A tensioning system for a mobile telescopic crane having a telescopic mast includes at least one tensioning cable for bracing the telescopic mast and at least one tensioning winch mounted on the crane superstructure for tensioning the cable. The tension in the cable creates a pressure bias within the mast. The winch is movable with respect to said superstructure of the crane and movement of the winch relative to the superstructure also imposes tension on the tensioning cable.

Abstract: The invention relates to a tensioning system for a mobile telescopic crane, in which the telescopic mast is outwardly braced via a tensioning means, and wherein said tensioning means is guided along or over the telescopic mast and fastened to the telescopic mast in such a way that a pressure bias of the mast is created in the area of the tensioning means guide. The tensile units or winches of a system in accordance with the invention are arranged on the crane superstructure at a distance from the level luffing plane of the telescopic mast of the crane, such that the tensioning means can absorb a substantial proportion of the loads having components perpendicular to the level luffing plane. The tensioning means tensile units or winches of a system in accordance with the invention are arranged on the crane superstructure, such that they can shift.

Abstract: An upper cross-sectional part for a telescopic part of a crane comprises a central flat cross-sectional element and, connected to the central flat cross-sectional element on each side thereof, a first outwardly curved cross-sectional element; a second flat cross-sectional element; a second outwardly curved cross-sectional element; and a third flat cross-sectional element.

Abstract: A slide block for a telescopic crane jib includes at least two mutually co-operating and relatively movable slide block parts, at least one of the parts comprising an oblique surface. The parts of the block are pre-tensioned or biased to move in a direction so that the total width of the slide block will vary and enlarge to fill a gap between inner and outer telescopic jib sections. In a telescopic crane jib-slide block arrangement incorporating such a slide block, the slide block is disposed on an inner telescopic jib section and presents a sliding surface to an adjacent outer telescopic part.

Abstract: A telescopic crane jib-slide bearing part comprises a receiver and a filler compound introduced into the receiver. A telescopic crane jib-slide bearing includes one or more such slide bearing parts.

Abstract: A telescopic jib for a crane, such as a vehicular crane, comprises an upper profile part and a lower profile part joined together. The lower profile part consists of several shell segments, each having an outwardly curved shape, and the upper profile part comprises several outwardly curved shell segments abutting each other at an obtuse angle.

Abstract: The invention relates to a tensioning system for a mobile telescopic crane, in which the telescopic mast (7) is outwardly braced via a tensioning means (1, 11), and wherein said tensioning means (1, 11) is guided along or over the telescopic mast (7) and fastened to the telescopic mast (7) in such a way that a pressure bias of the mast (7) is created in the area of the tensioning means guide. The tensile units or winches (3, 17) of a system in accordance with the invention are arranged on the crane superstructure at a distance from the level luffing plane of the telescopic mast (7) of the crane, such that the tensioning means (1, 11) can absorb a substantial proportion of the loads having components perpendicular to the level luffing plane. The tensioning means tensile units or winches (3, 17) of a system in accordance with the invention are arranged on the crane superstructure, such that they can shift.

Abstract: At least one section of a jib of a crane, such as a mobile crane, includes a composite cross-section incorporating a layer of steel covered by one or more fiber composite layers. In a preferred embodiment, more than one fiber composite layer is included and the respective fiber layers are disposed in a criss-cross manner with respect to each other to enhance the overall strength of the telescopic part. Also, in a preferred embodiment the steel layer of the composite is on the interior of the telescopic part for minimizing thermal stresses due to temperature changes caused by sun loads. In another preferred embodiment, the composite fiber layers are disposed only in the zone of the cross-section of the telescopic part, which is subjected to tensile forces during use.

Abstract: A telescopic jib for a crane, such as a vehicular crane, comprises an upper profile part and a lower profile part joined together. The lower profile part consists of several shell segments, each having an outwardly curved shape, and the upper profile part comprises several outwardly curved shell segments abutting each other at an obtuse angle.

Abstract: The invention relates to a slide mount for telescopic parts, more particularly for crane jibs, including a slipper arranged between the sliding surface areas of the telescopic parts, the slipper being configured so that it is held in place by a wedge effect between the telescopic parts, and the slipper including on its inner and/or outer surface area longitudinal grooves receiving compensating, spacer elements, preferably, elongated strips.

Abstract: A jib bearing assembly for at least two relatively movable telescopic parts of a jib for a crane includes embossments formed on at least one of the telescopic parts and cooperating bearing surfaces on the other part. The bearing assemblies are disposed in high stress and load regions of the cross-sectional configuration of concentric telescoping sections of the jib.

Abstract: A telescopic jib includes a base part, and at least one telescopic part telescoped in the base part. A shift mechanism extends and retracts each telescopic part. The base part and each telescopic part includes an upper semi-box shaped section part, and at least one of the base part and the telescopic part includes a lower section part having shell segments adjoining each other. Each shell segment has an outwardly curved shape.