Abstract: The invention relates to a method for setting up a mobile machine (1), particularly an automatic concrete pump, a mobile crane or a movable elevating work platform. With such a method, the subsurface (28) of a site is analyzed for the properties and/or load-bearing capacity thereof before the machine (10) is positioned there and/or oriented and supported by means of flarable supporting legs (20, 24) in set-up positions (VR, VL, HR, HL) suitable according to the determined subsurface properties and load-bearing capacity. In order to determine an optimized set-up position for the supporting legs (20, 24), geodata (38) of a geographic environment that includes the site is read via a computer in a data memory (44) using a layer of subsurface data (40) that defines the subsurface properties and load-bearing capacity.

Abstract: The invention relates to a wheeled working machine, particularly a truck-mounted concrete pump, comprising a chassis (10) that is designed as a semi-trailer. The semi-trailer encompasses a tractor (12) and a multi-axle trailer (14) which is connected to the tractor (12) by means of a fifth wheel (16) and carries the working machine. A support structure (38) located in the area of the trailer (14) can be supported on a ground (40) while the semi-trailer is lifted. The support structure (38) comprises two front support booms (42?, 42?) and two rear support booms (44) which can all be swiveled relative to the trailer (14) between a transported position and at least one supporting position. Furthermore, means for lifting and blocking the tractor (12) are arranged on the trailer (14) such that the tractor (12) forms a ballast in the supporting position in order to stabilize the trailer (14) that is supported on the ground (40) with the help of the support structure (38).

Abstract: The invention relates to a mobile working machine, particularly an automatic concrete pump, having a chassis (10) designed as a tractor-trailer. The tractor-trailer comprises a tractor (12) and a multi-axle semi-trailer (14) supporting the working machine and connected to the tractor by means of a fifth wheel (16). A support construction (38) that can be supported on a surface (40) is located in the area of the semi-trailer (14). The support construction (38) comprises two front stabilizers (42?, 42?) and two rearward stabilizers (44), each pivotable between a transport position and at least one support position relative to the semi-trailer. Means for raising and securing the tractor (12) are further disposed on the semi-trailer (14), so that the tractor (12) forms a ballast weight for stabilizing the semi-trailer supported by the support construction (38) on the base (40) in the support position.

Abstract: The invention relates to a moveable working device, particularly an auto concrete pump, comprising an undercarriage (10) provided with two front and two rear supporting extension arms (22,24) which can be extended from a travel position into at least one support position, which can be supported on a foundation (36) and which are respectively provided with a supporting leg (28), also provided with a respective measuring member (38) for determining the support load acting upon the supporting legs (28). If the telescopic supporting legs (28) with the telescopic member (30) fixed to the extension arm are coupled to a support leg casing by means of a coupling bolt (32), it is possible to configure the coupling bolt as a measuring member (38) in order to determine the support load, using particularly simple means. The measuring members can be incorporated into a stability monitoring device comprising a computer-assisted evaluation electronics system (68,74).

Abstract: A large manipulator, especially a truck-mounted concrete pump, has a boom base that can be arranged on a frame so as to be pivoted about a substantially vertical axis of rotation. The large manipulator has a pendular element, that hangs down as an articulated boom and a control device for controlling the drive units of the axes of articulation and rotation of the articulated boom. The remote control has at least one inclination sensor which is housed in a housing that is detachably fastened on the pendular element. Two inclination sensors are housed in the housing and are bent at an angle of 90° with respect to each other and with respect to an axis that is parallel to the pendular element axis. The housing has a mark indicating the orientation of at least one of the inclination sensors inside the housing.

Abstract: A large manipulator with an articulated mast (22) is pivotally connected to a mast base (21) that is rotatable about a vertical axis. The mast (22) comprises at least three mast arms (23 to 27) which are pivotable to a limited extent about horizontal articulated axis (28 to 32) that are located parallel to each other, the pivoting movement being relative to the mast base (21) or an adjacent mast arm (23 to 27) and being performed by means of a respective drive unit (34 to 38). A control unit is provided with coordinate transformer (74, 76) which responds to a given guiding parameter (r) and measured angular values (??) that are determined by means of angle sensors (44 to 48) located on the mast arms (23 to 27). The coordinate transformer (74, 76) does a conversion into movement signals (??v) for the drive units (34 to 38) in accordance with predefined path/slew characteristics, the movement signals being related to the articulation axis.

Abstract: The invention relates to a mobile concrete pump provided with a chassis, a concrete distribution boom arranged on the chassis, and a boom support unit whereon the folded distribution boom can be supported in the transport position. According to the invention, the boom support unit comprises a housing part which extends above the chassis, is accessible from the outside via closeable openings and comprises at least one support block for the distribution boom which support block is arranged on the top side thereof. The boom support unit can be provided with a switch element which can be actuated by the lying thereupon of the distribution boom, releasing the actuation of the support struts of the mobile concrete pump.

Abstract: A mobile concrete pump including a building frame (22) arranged on the structure (12) of a truck chassis (10). The building frame (22) includes two longitudinal side members (50) mutually spaced apart by a free space (52) and resting on the chassis structure (12). The mobile concrete pump further comprises a driving assembly (42) for actuating the functional units, which are arranged with the core pump (24) in the free space zone (52) located between the two longitudinal side members (50). At least the core pump can be easily mounted and dismounted from the building frame (22). For this, the building frame (22) is provided with a floating bearing (54) which links the side members across the free space, as well as a fixed bearing (56) arranged at the rear end of the building frame and serving to support releasably the core pump (24) which is pre-assembled in modular manner.

Abstract: The invention relates to a device for monitoring the safety of a bending pole (22) in a large manipulator, whereby the arms (23-27) of the mast can be pivoted in relation to each other by means of a drive unit (34-38). The relative position of the arms of the mast in relation to the respective adjacent arm of the mast or frame of the mast (21) is measured for adjusting the position thereof. According to the invention, the positing measuring values (?I) of the arms of the mast are used in order to control the safety of the drive units (34-38) or the actuators thereof (80-84) in relation to a variation of predefined safety values.

Abstract: The invention relates to a fluid tank (20) comprising a base section (26) that is delimited by a tank base (22), an intermediate plane (24), which is situated at a distance above the tank base (22) and a domed section (28), which is situated above the intermediate plane (24) and communicates with the base section (26). In order to assemble the fluid tank even in an environment with a complex construction for example on the chassis of a mobile concrete pump, the inventive base section (26) and the domed section (28) are configured as separate hollow parts.

Abstract: A device and a method for controlling a two-cylinder thick matter pump comprising pistons that are actuated in a push-pull manner by means of a hydraulic reversible pump (6) and hydraulic drive cylinders controlled by said pump. To ensure a reliable operation of the pump the expected length of the stroke of the pistons (8, 8?) in the drive cylinders (5, 5?) is measured and recorded, the stroke time of each conveyance stroke is monitored and compared with the expected stroke duration, and the reversible pump (6) is respectively pivoted, reversing the flow, and/or the pipe switch (56) is reversed when the stroke time exceeds the expected stroke duration by a pre-determined value.

Abstract: A device and a method for controlling a two-cylinder thick matter pump to achieve a reliable operation even of single-circuit two-cylinder thick matter pumps. To this end, the pipe switch includes a position transmitter responding to the pivoting position. At least two cylinder switching sensors are arranged on the working cylinders at a distance from each other, responding to the passing pistons of the drive cylinder, and/or a pressure sensor responding to the pressure course at the high-pressure outlet of the reversible pump is provided. A computer-assisted reversing device has a control routine responding to output signals of the position transmitter and to output signals of the cylinder switching sensors and/or the pressure sensors, enabling the programmed control of a control body for adjusting the flow quantity and direction of the reversible pump, and a reversing element arranged in the hydraulic branch of the pipe switch.

Abstract: The invention relates to a device and a method for controlling a two-cylinder thick matter pump comprising delivery pistons that are actuated in a push-pull manner by means of a hydraulic reversible pump (6) and hydraulic drive cylinders controlled by said pump. For each pressure stroke, the delivery cylinders (50, 50?) are connected to a delivery conduit (58) by means of a pipe junction (56). At the end of a pressure stroke, a reversal process of the reversible pump (6) and the pipe junction (56) is triggered. The aim of the invention is to obtain a targeted reversal of the reversal pump and the pipe junction, even when the deliverable quantity is varied, whereby the delivery cylinders are completely emptied, but also without pistons banging the ends of the cylinders.

Abstract: The invention relates to a supporting bracket (38) of a supporting construction for mobile machine tools, especially for concrete pumps. The supporting bracket (38) is multi-telescopic and comprises a carriage (38) which is pivotably arranged on the chassis (10), and a telescopic part consisting of a plurality of telescopic segments (40?, 40?, 40??) which are guided inside each other, engage in the carriage, and are mobile in relation thereto. The aim of the invention is to provide a narrow support using simple means. To this end, the carriage (38) and at least some of the telescopic segments (40?, 40??) have coupling points (50?, 50?, 50??) on which the segments can be coupled in pairs in such a way as to produce a fixed connection when the segments are retracted in relation to each other.

Abstract: A mobile concrete pump comprising a structural frame (14) mounted on the undercarriage (10) of a truck chassis (12), a boom stand (22) that is provided on the structural frame (14) and that is rotatable about a vertical axis (20) and a concrete distribution boom (24) configured in the form of multi-arm articulated boom (24). The concrete distributing boom consisting, for example, of six arms, which arms can rotate with respect to one another. In order to make possible the use of a distributing boom with a longer reach, a trailer (32) having its own undercarriage (34) is provided, said trailer being connected to the truck undercarriage (10) by a coupling member (36) in the transport condition. The trailer (32) has a pivot member (40) rotatable about a vertical axis (38) for receiving an arm set (42) that projects beyond the rear end of the truck undercarriage (10) in the transport condition.

Abstract: A movable concrete pump comprising a structural frame (14) that is mounted on a truck undercarriage (10) of a truck chassis (12), a boom stand (22) which is disposed on the structural frame (14) and can be rotated about a vertical axis (20), and a concrete distribution boom (24) embodied as a multi-member articulated boom. In order to be able to use a distribution boom having a great range, a trailer (34) is provided that has its own undercarriage (34) and is connected to the truck undercarriage (10) via a coupling member (36). The trailer (32) comprises a prop (40) which is rotatable about a vertical axis (38) and accommodates the set of arms that protrude from the rear end of the truck undercarriage (10) while driving on the road. The set of arms forms the coupling member (36) and encompasses a first boom arm (1) and additional boom arms (2 to 4) that are in a folded position relative to the first boom arm.

Abstract: A working boom with a rotating head on a frame, which rotates about a vertical axis, and boom arms that are each either pivotable or slideable by the use of a drive unit. The working boom includes a control device that controls boom movement with the aid of actuators assigned to each drive unit. Path or angular sensors are assigned to the boom arms, bending axes, vertical axis and/or or drive units. At least one of the drive units includes a hydraulic cylinder with a ground end and a rod-side end. A force or pressure sensor is disposed on the ground end or rod-side end of the hydraulic cylinder. A data storage device receives a pre-set data field of pressure and/or force limit values in connection with a respective path or measurement value assigned to the boom arms, the pre-set data field being analytical or in tabular form.