Abstract: A hydraulic system, preferably for actuating and engaging a mobile slurry pump, includes a primary circuit, actuating a first hydraulic consumer, which circuit has a hydraulic drive assembly including at least one motor-driven hydraulic pump. The hydraulic system further includes a secondary circuit, actuating a second hydraulic consumer, which circuit has a second hydraulic drive assembly including at least one additional motor-driven hydraulic pump. In a first operating state, hydraulic oil from a common tank can be admitted to the hydraulic consumers arranged in the primary circuit and in the secondary circuit via the hydraulic drive assemblies thereof, independently of one another. In a second operating state, a portion of the hydraulic oil is supplied from the primary circuit to the secondary circuit to actuate the second consumer.

Abstract: The invention relates to a mobile concrete pump comprising a supporting structure (46) that is placed directly or indirectly by means of an assembly frame (22) on the running gear (12) of an HGV chassis (10), the supporting structure incorporating functional units that form a support device and a placing boom (36). The placing boom (36) is rotatably mounted on a boom pedestal (44). The boom pedestal (44) comprises a vessel (52) that is inserted in the supporting structure (46) and acts as a rotary bearing for the placing boom (36), while the support device has two support leg casings (54, 56) which are integrated into the supporting structure (46), cross over one another, have diagonal passages that are open at the front and have a telescopic support leg (40) in each support leg casing.

Abstract: The invention relates to a rheometer (100) for high-viscosity materials and to a device and a method for estimating, by means of such a rheometer (100), the feeding pressure to be applied in order to overcome the feeding resistance of high-viscosity material in a pipe. The rheometer (100) has a receptacle for holding high-viscosity material in the receptacle. The receptacle is designed as a standard pipe section (102) that can be filled with high-viscosity material (300). In the rheometer (100), the standard pipe section (102) and high-viscosity material (300) filled into the standard pipe section (102) can be made to linearly move relative to each other at a first rate and at another rate differing from the first rate.

Abstract: The invention relates to a hydraulic system, preferably for piloting and actuating a two-cylinder thick matter pump. The hydraulic system comprises a tank (68) for receiving hydraulic oil, a primary circuit having at least one hydraulic consumer (AH, MH) which has at least one primary pump (36, 38, 61, 70), which is loaded with hydraulic oil via a first suction line (42), and is connected on the outlet side to at least one first return line, and which has a suction/return filter (40) which communicates with the first suction line (42) on the outlet side and is loaded on the inlet side with return oil from the at least one return line. A special feature of the invention consists in that the first suction line (42) communicates with the tank (68) via a separate replenishing suction line (86) and a suction filter (66), wherein a replenishing suction valve (88) which is preloaded in the direction of the suction filter (66) is arranged in the replenishing suction line (86).

Abstract: The invention relates to a mobile work device, particularly a mobile concrete pump. The work device comprises essentially a chassis (12), two front and two rear support booms (38, 40) that can be moved out from a transport position into at least one working position relative to the chassis (12) and have a support leg (42) that can be supported on a substratum, in each instance, raising the chassis, as well as a drive unit (47) for controlling work assemblies and/or the support booms. A particular feature of the invention consists in that at least one of the support booms (40) having a beam profile or hollow-chamber profile has a transverse perforation (48) that can be configured as a housing for an ancillary assembly (52) of the drive unit, for example.

Abstract: A mobile work machine includes a chassis that has a traveling gear and a bracing device that is arranged on the chassis and can be braced on a support such as to raise the chassis. The traveling gear includes at least one traveling gear part, the relative position and/or inclination of which with respect to the chassis can be varied during the bracing process. At least one position or inclination sensor is arranged on the traveling gear part, the output signal of the sensor being an actual measure of the position or the inclination of the traveling gear part relative to a reference system that is stationary on the chassis or stationary on the ground. In addition, an evaluation unit is provided, which responds to the output signal of the at least one position or inclination sensor.

Abstract: The invention relates to a distributing boom (14) for stationary or mobile concrete pumps. The distributing boom (14) consists substantially of a rotary head (22), which can be rotated about an axis of rotation (18) in the form of a vertical axis, and of an arm assembly (24), which is made up of a plurality of boom arms which can be telescoped or pivoted relative to one another. The arm assembly (24) has the one end of its first boom arm (1) articulated on the rotary head (22) and, by means of a first cylinder/piston unit (32), which has its ends articulated at points of articulation (28, 30) of the rotary head (22) and of the first boom arm (1), can be pivoted, about a horizontal axis of inflection (A), between a substantially horizontally oriented retracted position and an operating position. It is an aim of the invention to provide measures which make it possible for the cylinder/piston unit (32), which acts on the first boom arm (1), to be reduced in size.

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: The invention relates to a mobile work machine, comprising a chassis (10) that has a traveling gear (11) and a bracing device that is arranged on the chassis (10) and can be braced on a support (28) such as to raise the chassis (10). The invention is further based on the realization that the traveling gear (11) comprises at least one traveling gear part (38, 38?), the relative position and/or inclination of which with respect to the chassis (10) can be varied during the bracing process. According to the invention, at least one position or inclination sensor (36) is arranged on the traveling gear part (38, 38?), the output signal of the sensor being an actual measure of the position or the inclination of the traveling gear part (38, 38?) relative to a reference system that is stationary on the chassis or stationary on the ground. In addition, an evaluation unit is provided, which responds to the output signal of the at least one position or inclination sensor.

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 mobile work device, particularly a mobile concrete pump. The work device comprises essentially a chassis (12), two front and two rear support booms (38, 40) that can be moved out from a transport position into at least one working position relative to the chassis (12) and have a support leg (42) that can be supported on a substratum, in each instance, raising the chassis, as well as a drive unit (47) for controlling work assemblies and/or the support booms. A particular feature of the invention consists in that at least one of the support booms (40) having a beam profile or hollow-chamber profile has a transverse perforation (48) that can be configured as a housing for an ancillary assembly (52) of the drive unit, for example.

Abstract: The invention relates to a material feed receptacle for a thick matter pump comprising a receptacle lower part and a receptacle top that is detachably connected to the receptacle lower part, a two-part front wall, a rear wall, two two-part lateral walls, an upwardly pointing material feed opening delimited by a peripheral edge, and a pipe junction, which is situated inside the receptacle, can, on the entry side, swivel in an alternating manner in front of the delivery cylinder openings and which, on the output side, leads to a pressure pipe. The invention provides that the receptacle top has an upper lateral wall part and upper lateral wall parts, which have free ends and which extend away from the front wall part. The invention also provides that the peripheral edge has a first edge part, which forms an upper edge of the receptacle top, and ha a second edge part on the receptacle lower part, which is situated on the rear wall and is joined to the first edge part.

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: 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: Mobile work machine having a chassis that is designed as a tractor-trailer, a multi-axle tractor unit and a multi-axle semi-trailer that carries the work machine and is connected with the tractor unit by means of a fifth-wheel coupling, having a support construction that is disposed in the region of the semi-trailer and can be supported on a surface, raising the tractor-trailer, which construction has two front support booms disposed at bearing locations on the tractor unit end of the semi-trailer, symmetrical to the longitudinal chassis axis, which can be pivoted between a transport position and at least one support position, by means of a hydraulically driven activation mechanism, in each instance, and two rear support booms that can be pivoted between a transport position and at least one support position, whereby the semi-trailer has means for raising and holding the tractor unit in place.

Abstract: A transportable thick matter pump includes a carrying framework for machine assemblies. A covering hood reaches at least partly over and is fixed in place on the carrying framework and includes a frame skeleton having a rectangular roof frame and two rectangular side frames connected with the roof frame at their upper edge and releasably attached to the carrying framework with their lower edge. A basin-shaped roof cover is inserted into the roof frame, with its opening facing upward, while the side frames carry at least one side paneling element configured as a self-supporting plastic molded hinged door articulated on at the upper edge of the related side frame. The frame skeleton openings formed by the roof frame and the two side frames, on the face-side hood ends, are covered by a removable end cap configured as a self-supporting plastic molded part.

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 an arrangement for conveying concrete for the construction of multi-storey concrete buildings. The arrangement comprises a concrete-distributing mast which is height-adjustable on completed parts of the building, for example on storey floors (48?, 48?, 48??), the mast comprising a supporting column (10), a rotary unit (12) and an arm assembly (14) preferably designed as an articulated boom, and the mast being equipped with a conveying line (16) which is guided over the height of the supporting column (10) to the arm assembly (14) and which is supplied with liquid concrete.

Abstract: The invention relates to a mobile work machine, particularly a concrete pump truck. The work machine comprises a chassis (10) that has at least four wheels (11) that belong to a wheel axle, in pairs. Furthermore, at least two support legs (20) disposed laterally on the chassis, in pairs, are provided, which legs have a telescope segment configured as an extension tube (28) articulated onto the chassis (10), and a foot part (24) that can be extended downward, in telescope-like manner, and supported on the ground, preferably by hydraulic means. In order to guarantee simple handling of the support mechanism, it is proposed, according to the invention, that the extension tube (28) of the support legs (20) is configured in the manner of a two-arm lever, forming a lower lever arm (40), with reference to the pivot axis (34), which contains the foot part (24), and an upper lever arm (42), preferably spring-supported in the pivoting-out direction.

Abstract: The invention relates to a material feed receptacle for a thick matter pump comprising a receptacle lower part and a receptacle top that is detachably connected to the receptacle lower part, a two-part front wall, a rear wall, two two-part lateral walls, an upwardly pointing material feed opening delimited by a peripheral edge, and a pipe junction, which is situated inside the receptacle, can, on the entry side, swivel in an alternating manner in front of the delivery cylinder openings and which, on the output side, leads to a pressure pipe. The invention provides that the receptacle top has an upper lateral wall part and upper lateral wall parts, which have free ends and which extend away from the front wall part. The invention also provides that the peripheral edge has a first edge part, which forms an upper edge of the receptacle top, and ha a second edge part on the receptacle lower part, which is situated on the rear wall and is joined to the first edge part.