Abstract: A mobile crane drive assembly axle includes mutually independent suspensions of wheel carriers arranged on both sides of the drive assembly frame of the mobile crane. The suspensions each include at least one transverse control arm which couples the wheel carrier onto the drive assembly frame and is connected to the drive assembly frame such that it can be rotated about an axis which extends substantially parallel to the longitudinal axis of the drive assembly frame.

Abstract: A crane telescope locking device includes a control device which is hydraulically in contact with a telescoping cylinder of a crane telescope and, for the purpose of actuating, with at least one cylinder lock hydraulic cylinder and includes a valve which is open in its inactivated resting state and thus opens a fluidic connection between the telescoping cylinder and the at least one cylinder lock hydraulic cylinder. A telescoping cylinder (6) of a crane includes such a crane telescope locking device.

Abstract: A drying device for drying intake air fed to a compressed-air system of a vehicle includes a cooling device connected downstream of a compressor in an intake air flow path and draws off heat from the intake air coming from the compressor, a desiccant container connected downstream of the cooling device in the intake air flow path and comprising an adsorbent for removing water from the intake air flowing through the desiccant container, and a regeneration container connected downstream of the desiccant container in the intake air flow path and configured to receive a first portion of the intake air coming from the desiccant container and, as required, returns it to the desiccant container and which feeds heat, drawn off by the cooling device, to the received intake air.

Abstract: A crane includes a jib which is mounted on the crane structure so as to be rotatable about a bearing point, a counterweight arrangement which can be positioned variably in relation to the bearing point, and a hoisting cable which runs out from a hoisting winch and is guided via the jib. A counterweight adjustment device, which is coupled to the counterweight arrangement, includes a lever element mounted rotatably about a pivot point, a hoisting cable guide arranged in the course of the hoisting cable between the hoisting winch and an upper jib section, with a first deflecting pulley arrangement mounted on the jib and a second deflecting pulley arrangement mounted on the lever element, wherein the hoisting cable is guided in an alternating manner via the first and the second deflecting pulley arrangement, and a coupling element acting on the lever element and connected to the counterweight arrangement.

Abstract: A method for ascertaining the load capacity of a functional element of a crane, the load capacity of a sub-assembly of a crane or the load capacity of a crane, wherein: a maximum bearing load is calculated for a specifically occurring configuration and/or specifically occurring state parameters and/or specifically occurring operating parameters on the basis of a predetermined formula; and the calculation is verified on the basis of stored bearing load values.

Abstract: A telescopic jib bracing unit for a mobile crane includes a holding frame which is embodied for fastening to the telescopic jib of the mobile crane and exhibits an open cross-section, the cross-sectional opening of which enables the jib to be retracted into the holding frame, and two bracing supports which are connected by the holding frame to form a structural unit. Two frame parts which form the open cross-section of the holding frame are coupled to each other via a coupling point such that they can be moved with respect to each other. A bracing unit transport system, a mobile crane and a fitting method are also provided.

Abstract: The invention relates to a bolting device having two bolts which are held rotationally secure and coupled to each other via a spindle element, wherein: a first bolt is connected via a threaded engagement to a corresponding thread of the spindle element; rotating the spindle element about its central longitudinal axis causes the first bolt to move along the longitudinal axis; and a second bolt is rotationally mounted on the spindle element in a fixed axial position. The invention also relates to a crane jib head comprising such a bolting device, for bolting a lattice masthead to a head adaptor.

Abstract: A crane, in particular a mobile crane, having a closed hydraulic circuit in which a hydraulic pump is hydraulically connected to at least one hydraulic motor via a feed and a discharge, and in which the feed is hydraulically connected to the discharge via at least one bypass which bypasses the at least one hydraulic motor, wherein the at least one bypass includes a continuously adjustable valve for variably controlling the fluid flow bypassing the at least one hydraulic motor. In addition, a corresponding control device and a corresponding crane control program for actuating a closed hydraulic circuit of a crane are provided.

Abstract: A crane includes a jib which is mounted on the crane structure so as to be rotatable about a bearing point, a counterweight arrangement which can be positioned variably in relation to the bearing point, and a hoisting cable which runs out from a hoisting winch and is guided via the jib. A counterweight adjustment device, which is coupled to the counterweight arrangement, includes a lever element mounted rotatably about a pivot point, a hoisting cable guide arranged in the course of the hoisting cable between the hoisting winch and an upper jib section, with a first deflecting pulley arrangement mounted on the jib and a second deflecting pulley arrangement mounted on the lever element, wherein the hoisting cable is guided in an alternating manner via the first and the second deflecting pulley arrangement, and a coupling element acting on the lever element and connected to the counterweight arrangement.

Abstract: A locking head is configured such that it can be moved within and along the longitudinal axis of a telescope, which comprises at least two telescope sections, by means of a telescoping device, comprising a base body, at least one releasing device which is configured to release a telescope section lock and at least one coupling device which is configured to couple a telescope section with the telescoping device. The locking head comprises an operating member which mechanically acts on the releasing device and the coupling device in order to operate the releasing device and the coupling device. The operating member comprises a first link guide for the releasing device and a second link guide for the coupling device, wherein the links for the first and second link guides extend in a single plane or in parallel planes.

Abstract: A tracked drive assembly for a work machine comprises a crawler frame, a crawler track, a drive wheel and a guide wheel, and an arrangement of running wheels coupled to the crawler frame, wherein the tracked drive assembly has a sensor system comprising a sensor for each of the outer running wheels of the running wheel arrangement, which are positioned or located adjacent to the drive wheel and the guide wheel, and at least one other running wheel which is arranged between the outer running wheels, wherein the force introduced into the crawler track via the respective running wheel can be determined by way of the sensor. A method for determining the ground pressure distribution below a work machine includes exposing the sensor to a compressive load at a running wheel.

Abstract: The invention relates to a drive device for supplying power to multiple engine pumps (4, 5), provided in the superstructure (3) of a mobile crane for superstructure functions, by way of a drive motor (2) arranged in the undercarriage (1) of the mobile crane, comprising a hydraulic motor (7) which is arranged in the superstructure (3) and hydraulically driven by the drive motor (2) and which comprises a first mechanical output which couples at least one first engine pump (4) to the hydraulic motor (7) and a second mechanical output which couples at least one second engine pump (5) to the hydraulic motor (7). The invention also relates to a mobile crane comprising this drive device.

Abstract: A tracked drive assembly for a work machine comprises a crawler frame, a crawler track, a drive wheel and a guide wheel, and an arrangement of running wheels coupled to the crawler frame, wherein the tracked drive assembly has a sensor system comprising a sensor for each of the outer running wheels of the running wheel arrangement, which are positioned or located adjacent to the drive wheel and the guide wheel, and at least one other running wheel which is arranged between the outer running wheels, wherein the force introduced into the crawler track via the respective running wheel can be determined by means of said sensor. The invention also relates to a method for determining the ground pressure distribution below a work machine.

Abstract: A vehicle crane includes a carbody, a turntable rotatably mounted on the carbody, a jib mounted on the turntable that can be tilted about a horizontal axis, and a counterweight assembly mounted on the turntable and can be moved relative to the turntable. A coupler mechanically couples the position of the counterweight assembly to the tilt angle of the jib. The coupler is embodied such that it can be decoupled.

Abstract: The invention relates to an assembly system for a mobile crane auxiliary lifting unit comprising auxiliary lifting unit assembly fastenings which are coupled to the auxiliary lifting unit and serve to fasten the auxiliary lifting unit to the crane, and comprising an assembly unit which can move the auxiliary lifting unit assembly fastenings into an assembly position. It also relates to an assembly installation for a mobile crane auxiliary lifting unit, comprising such an assembly system and comprising a sub-structure. A footing support for a mobile crane auxiliary lifting unit and a method for assembling a mobile crane auxiliary lifting unit are also disclosed.

Abstract: A height access device enables motorized access to the driving station of a tower crane atop a mast formed of superposed mast elements. It includes a lift cabin installed inside the mast of the crane and movable vertically along the mast. The height access devices further includes a working platform positioned above and separably connected to the lift cabin. A coupling device provides a non-permanent connection of the working platform to the lift cabin and immobilizes the working platform relative to the mast at a required height. The height access device enables the crane driver to ascend and descend with the lift cabin alone when disconnected from the working platform and with the lift cabin and working platform together, particularly during the assembly and dismantling of the mast.

Abstract: A self-propelled work machine, in particular a mobile crane, comprises an undercarriage configured for moving the work machine, a superstructure which is rotatably mounted on the undercarriage, and a drive device comprising a drive motor. The drive device comprises a moment transmission which is formed between the superstructure and the undercarriage and configured to transmit power outputted by the drive motor between the superstructure and the undercarriage in the form of a moment. At least one and, in particular, all of the elements to be driven receive a moment about an axis which extends in the region of a rotary bearing of the superstructure and the undercarriage, in particular about the rotational axis of the superstructure.

Abstract: A cable connector includes a first part for receiving a cable end of a first cable and a connecting element for connecting to a second cable, at least one second part which encompasses the first cable, and at least one joint which connects the first part and the second part to each other.

Abstract: A device for detecting and monitoring an assembled counterweight on a crane includes a turntable steelwork construction comprising a counterweight cylinder; a sensor which is arranged in the region of a connection between the counterweight cylinder and the turntable steelwork construction; and a computational unit (8), wherein the sensor is connected to the computational unit, and the computational unit comprises a logic which determines a weight of a counterweight which can be connected to the turntable steelwork construction from data which are captured by the sensor and transmitted to the computational unit.

Abstract: An adjustable bearing foot assembly for installation in a base plate, for example a base plate of a crane sub-assembly, including a threaded nut comprising an inner thread; a bearing foot having an outer thread; and a securing element with which the bearing foot can be fixed, rotationally secure, in the threaded nut.