Abstract: The invention relates to a truck-mounted concrete pump having at least one travelling-drive motor and a hydraulic pumping device for delivering liquid concrete, wherein at least one electric motor is provided and the hydraulic pumping device can be driven either by the at least one travelling-drive motor or the at least one electric motor, characterized in that the travelling-drive motor is connected by way of a power take-off of a transfer gearbox of the travelling-drive train of the truck-mounted concrete pump to a branching gearbox, with a first gearbox input of the branching gearbox being coupled with the power take-off of the travelling-drive motor and a second gearbox input being coupled with the electric motor, and the gearbox output of the branching gearbox being connected to at least one hydraulic pump of the hydraulic pumping device.

Abstract: A concrete distributor mast has a plurality of mast arms, which can be moved relative to each other. The mast arms are connected to each other in a hinged manner at coupling points and have in the region of the coupling points hinge points, at which drive and coupling members of a coupling gear mechanism that actuates the mast arm movement are coupled in a hinged manner. Situated at the hinge points of the mast arms are hinge components, which span the respective mast arm transversely and define a bearing axis. At least one of the hinge components has a hinge pin, which is connected in a rotationally fixed manner to the mast arm, projects outwards beyond the mast arm to both sides at the free ends thereof, and is connected in a rotationally fixed manner to the mast arm. On the ends of the hinge pin that project beyond the mast arm, bearing shells are arranged for the rotary bearing of an adjacent drive or coupling member of the coupling gear mechanism.

Abstract: This disclosure relates to a truck-mounted concrete pump including a vehicle, a concrete distributor boom disposed on the vehicle and including multiple boom arms that can be stowed, in the form of an arm assembly, on a vehicle-mounted boom resting unit, and a boom hydraulic system configured to stow and unfold the arm assembly and including a hydraulic cylinder that moves the arm assembly against the boom resting unit in a stowing movement. To terminate the boom stowing movement, a protective circuit is coupled to the hydraulic cylinder. The protective circuit includes a switching unit actuable under the load of the arm assembly. The switching unit has a load receiving element arranged on the boom resting unit that is resiliently deformable when stowing the arm assembly, wherein the arm assembly is only supported on the boom resting unit by the load receiving element.

Abstract: A mast arm for a concrete distributor mast comprises an elongated box profile support composed, in at least some sections, of a lower belt, an upper belt, and two lateral walls that connect the belts, and comprising at least one partition sheet metal element arranged in a hollow cross-section of the box profile support, the partition sheet metal element being welded to the box profile support along longitudinal welding joints running along the box profile support.

Abstract: This disclosure relates to an automatic concrete pump comprising a support structure, which is mounted on a vehicle, for a concrete distributing mast and at least two supporting jacks which are pivotably joined to the support structure via an articulated joint, each articulated joint comprising two support plates made from a solid material, each having a bearing bore and protruding in a forked manner at a lateral distance from each other over the edge of a defining wall of the support structure, and having a hinge bolt which traverses the bearing bores. According to this disclosure, the defining wall which faces the hinge bolt is further away from the axis of the hinge bolt in the central area between the bearing plates than in the edge areas thereof which are adjacent to the support plates.

Abstract: This disclosure relates to a truck-mounted concrete pump including a vehicle, a concrete distributor boom disposed on the vehicle and including multiple boom arms that can be stowed, in the form of an arm assembly, on a vehicle-mounted boom resting unit, and a boom hydraulic system configured to stow and unfold the arm assembly and including a hydraulic cylinder that moves the arm assembly against the boom resting unit in a stowing movement. To terminate the boom stowing movement, a protective circuit is coupled to the hydraulic cylinder. The protective circuit includes a switching unit actuable under the load of the arm assembly. The switching unit has a load receiving element arranged on the boom resting unit that is resiliently deformable when stowing the arm assembly, wherein the arm assembly is only supported on the boom resting unit by the load receiving element.

Abstract: A working device has a substructure for receiving a supporting device for ground support and an elongated working boom. The one end of the working boom is mounted on a rotary head bearing block, which projects beyond the substructure, in a pivotal manner about a horizontal axis. Furthermore, the rotary head is mounted on a rotary bearing of the substructure in a rotatable manner about a vertical axis by a radially projecting bearing ring. The bearing block and the bearing ring of the rotary head are rigidly connected to each other via a base plate provided with a central opening. The rotary head has an annular reinforcing structure which points away from the mounting plate in the direction of the substructure and is concentric about the bearing ring, the reinforcing structure compensating for the non-roundness of the support structure of the bearing block in the circumferential direction of the bearing ring.

Abstract: The invention relates to a shell coupling (40) for coupling pairs of pipes, having two half-shells (46, 48?) which, in the coupling state, bound a circular opening (60) for through-passage of the pipes and, at their one end, can be pivoted in relation to one another, via an outer articulation (44), about an articulation axis-parallel to the circular opening (60) and, at their other end, can be connected to one another in a releasable manner via a clamping mechanism (51), with the pipes which are to be coupled being clamped in the process.

Abstract: A method produces a mast arm with a mast arm body and with at least one pipe holder for a concrete-distributing mast for use on stationary and mobile concrete pumps with a plurality of mast arms which are connected to one another so as to be pivotable on articulated joints about an axis of articulation and which hold a concrete-conveying line which has at least one rotary joint which has an axis of rotation aligned with an axis of articulation of an articulated joint. The at least one pipe holder here has a pipe support section which serves for receiving the concrete-conveying line at a holding point which has a location predetermined by the position of the axis of articulation. The mast arm body is premanufactured with a receiving intersection and the at least one pipe holder is premanufactured with a fastening section which has a connecting intersection.

Abstract: A working device has a substructure for receiving a supporting device for ground support and an elongated working boom. The one end of the working boom is mounted on a rotary head bearing block, which projects beyond the substructure, in a pivotal manner about a horizontal axis. Furthermore, the rotary head is mounted on a rotary bearing of the substructure in a rotatable manner about a vertical axis by a radially projecting bearing ring. The bearing block and the bearing ring of the rotary head are rigidly connected to each ,other via a base plate provided with a central opening. The rotary head has an annular reinforcing structure which points away from the mounting plate in the direction of the substructure and is concentric about the bearing ring, the reinforcing structure compensating for the non-roundness of the support structure of the bearing block in the circumferential direction of the bearing ring.

Abstract: This disclosure relates to an automatic concrete pump comprising a support structure, which is mounted on a vehicle, for a concrete distributing mast and at least two supporting jacks which are pivotably joined to the support structure via an articulated joint, each articulated joint comprising two support plates made from a solid material, each having a bearing bore and protruding in a forked manner at a lateral distance from each other over the edge of a defining wall of the support structure, and having a hinge bolt which traverses the bearing bores. According to this disclosure, the defining wall which faces the hinge bolt is further away from the axis of the hinge bolt in the central area between the bearing plates than in the edge areas thereof which are adjacent to the support plates.

Abstract: A conveying pipe for transporting solids includes a pipe body and a pipe collar connected to at least one end of the pipe body. The pipe collar and the pipe end are coupled to each other by an interference fit at least in some sections in a coupling region in a longitudinal direction of the pipe body. In the coupling region, an anaerobically hardening adhesive is optionally arranged in craters or depressions. The conveying pipe is produced by roughening the pipe collar inner surface and/or the pipe end outer surface in a coupling region, cleaning the pipe collar inner surface and/or the pipe end outer surface, applying an anaerobic hardenable adhesive the pipe collar inner surface and/or the pipe end inner surface, and pressing the pipe collar onto the pipe end and/or pressing the pipe end into the pipe collar.

Abstract: The invention relates to a mast arm for a concrete distributor mast, comprising an elongated box profile support composed, in at least some sections, of a lower belt, an upper belt, and two lateral walls that connect the belts, and comprising at least one partition sheet metal element arranged in a hollow cross-section of the box profile support, the partition sheet metal element being welded to the box profile support along longitudinal welding joints running along the box profile support.

Abstract: A rotary distributor for thick matter, in particular for fresh concrete, has a load-bearing framework, which can be set down on a set-down surface, has a first extension-arm tube, which is arranged on the load-bearing framework such that it can be rotated about a framework-mounted vertical axis in the region of its inlet end, and has a second extension-arm tube, which is arranged such that it can be pivoted about a horizontal pivot axis in the region of the outlet end of the first extension-arm tube and communicates with the first extension-arm tube. The first extension-arm tube, in the region of its inlet end, can be pivoted, in addition, about a horizontal axis in relation to the load-bearing framework, and the second extension-arm tube can be rotated, in addition, about an axis of rotation, which is perpendicular to the horizontal pivot axis, in relation to the outlet end of the first extension-arm tube.

Abstract: A concrete distributor mast has a plurality of mast arms, which can be moved relative to each other. The mast arms are connected to each other in a hinged manner at coupling points and have in the region of the coupling points hinge points, at which drive and coupling members of a coupling gear mechanism that actuates the mast arm movement are coupled in a hinged manner. Situated at the hinge points of the mast arms are hinge components, which span the respective mast arm transversely and define a bearing axis. At least one of the hinge components has a hinge pin, which is connected in a rotationally fixed manner to the mast arm, projects outwards beyond the mast arm to both sides at the free ends thereof, and is connected in a rotationally fixed manner to the mast arm. On the ends of the hinge pin that project beyond the mast arm, bearing shells are arranged for the rotary bearing of an adjacent drive or coupling member of the coupling gear mechanism.

Abstract: A method produces a mast arm with a mast arm body and with at least one pipe holder for a concrete-distributing mast for use on stationary and mobile concrete pumps with a plurality of mast arms which are connected to one another so as to be pivotable on articulated joints about an axis of articulation and which hold a concrete-conveying line which has at least one rotary joint which has an axis of rotation aligned with an axis of articulation of an articulated joint. The at least one pipe holder here has a pipe support section which serves for receiving the concrete-conveying line at a holding point which has a location predetermined by the position of the axis of articulation. The mast arm body is premanufactured with a receiving intersection and the at least one pipe holder is premanufactured with a fastening section which has a connecting intersection.

Abstract: The invention relates to a shell coupling (40) for coupling pairs of pipes, having two half-shells (46, 48?) which, in the coupling state, bound a circular opening (60) for through-passage of the pipes and, at their one end, can be pivoted in relation to one another, via an outer articulation (44), about an articulation axis-parallel to the circular opening (60) and, at their other end, can be connected to one another in a releasable manner via a clamping mechanism (51), with the pipes which are to be coupled being clamped in in the process.

Abstract: A conveying pipe for transporting solids includes a pipe body and a pipe collar connected to at least one end of the pipe body. The pipe collar and the pipe end are coupled to each other by an interference fit at least in some sections in a coupling region in a longitudinal direction of the pipe body. In the coupling region, an anaerobically hardening adhesive is optionally arranged in craters or depressions. The conveying pipe is produced by roughening the pipe collar inner surface and/or the pipe end outer surface in a coupling region, cleaning the pipe collar inner surface and/or the pipe end outer surface, applying an anaerobic hardenable adhesive the pipe collar inner surface and/or the pipe end inner surface, and pressing the pipe collar onto the pipe end and/or pressing the pipe end into the pipe collar.

Abstract: The apparatus of the present disclosure is an improvement on known wheelchairs and other known devices for transporting elderly, infirm, injured, handicapped, disabled, or otherwise mobility-impaired individuals. The present disclosure provides a seat that is adjustable in both height and tilt angle for easy loading and unloading. In some embodiments, the height adjustment is provided via a hydraulic lift cart. Further provided are adjustable horizontal leg supports. A non-confining cage of substantially vertical support bars surrounds the occupant, and straps may be attached around the support bars. This provides support without causing the occupant to feel strapped down and confined to the device. Removing the straps allows easy loading and unloading from whichever side of the apparatus is most convenient.

Abstract: The present disclosure provides for individuals who may otherwise have trouble lifting themselves from the floor after a fall. Using the teachings of the present disclosure, such individuals may autonomously regain their footing, without the necessity of calling paramedics or others for help. An individual may crawl onto the seat of the device and then, using either a handcrank or an electric motor, lift himself to a sitting/standing position.