Abstract: A mobile thick matter pump for conveying thick matter includes a trailer chassis, a pump unit, and a drive motor. The pump unit is arranged on the trailer chassis. The drive motor is arranged on the trailer chassis and configured to drive the pump unit to convey thick matter. The pump unit is arranged eccentrically on the trailer chassis such that the pump unit is laterally offset in a first direction relative to a longitudinal center plane of the trailer chassis. The drive motor is arranged eccentrically on the trailer chassis such that the drive motor is laterally offset relative to the longitudinal center plane in a second direction opposite to the first direction.

Abstract: The invention relates to a method for operating a piston pump with a differential cylinder drive (1) with at least two differential cylinders (2, 3) for driving at least two conveying pistons movable in conveying cylinders, each conveying piston being driven via an associated differential cylinder (2, 3) of the differential cylinder drive (1) for operating the piston pump, with a hydraulic circuit (4) for driving the differential cylinder drive (1) by the action of hydraulic fluid. The invention also relates to a piston pump for carrying out the method.

Abstract: A large manipulator includes a chassis, a mast pedestal, an articulated mast, and a control unit. The mast pedestal is rotatable around a vertical axis by means of a rotary drive and arranged on the chassis. The articulated mast includes two or more mast arms pivotally-movably connected, via articulated joints, with the respectively adjacent mast pedestal or other mast arm by a pivot drive. The control unit is configured to actuate the pivot drive and/or the rotary drive to move the articulated mast with a control sequence from an initial position of the articulated mast, autonomously, into a pre-specified target position of the articulated mast.

Abstract: A hydraulic rotary drive includes a first rotary drive element and at least two annular pistons connected to the first rotary drive element in a rotationally fixed manner and configured to be axially movable on the first rotary drive element between two end positions. Each annular piston has two annular spur serrations directed away from one another. The hydraulic rotary drive includes a second rotary drive element with ring type serrations that are complementary to the spur serrations of the annular pistons. The hydraulic rotary drive includes a control unit that is configured to control supply of hydraulic fluid to the annular pistons to cause a reciprocating movement of the annular pistons on a shaft in accordance with an operating signal. The hydraulic rotary drive includes a sensor arrangement communicatively coupled to the control unit and arranged to detect the positions of the annular pistons along respective sliding paths.

Abstract: An articulated boom of a large manipulator includes a plurality of boom segments connected to one another via articulated joints. At least one of the boom segments has a welded assembly forming a box profile in which an upper belt and a lower belt are connected to one another via lateral web plates. At least one of the web plates, the upper belt, and/or the lower belt is formed at least by one sheet metal section, which has at least one bending running essentially in a longitudinal direction of the boom segment. The at least one bending ends at a distance from an end of the sheet metal section so that the end of the sheet metal section is unbent.

Abstract: A retaining system for a rotation angle sensor assembly is disclosed. The retaining system includes a first retaining element for coupling to a first of two machine parts and comprising a rotation angle sensor of the rotation angle sensor assembly. The retaining system also includes a second retaining element for coupling to a second of the two machine parts and comprising at least one position encoder element of the rotation angle sensor assembly corresponding to the rotation angle sensor. The rotation angle sensor is configured to detect a rotation of the position encoder element relative to the rotation angle sensor. The first retaining element is configured to guide the rotation angle sensor via a guide positioned between the first retaining element and the second retaining element so as to be rotatable relative to the position encoder element on the second retaining element.

Abstract: A large manipulator includes an articulated boom that can be folded out. The articulated boom includes boom segments including a last boom segment having a boom tip. The articulated boom includes an end hose and end-hose holder. The end hose is flexible, arranged on the last boom segment, and can be removably coupled to the last boom segment by the end-hose holder. The end-hose holder includes a holding bracket arranged on the last boom segment. The holding bracket is configured to be pivotable into a first pivot position, a second pivot position, and a third pivot position relative to the last boom segment.

Abstract: A device includes a remote control apparatus with a control lever that is pivotably mounted to the remote control apparatus. The control lever is pivotable within an inner zero-position range, an outer travel range, and an oscillation damping range located between the inner zero-position range and the outer travel range. The remote control apparatus is configured to cause movement of a large manipulator, which has an active oscillation damping mode, switch on the active oscillation damping mode and cause movement of the large manipulator when the control lever is within the outer travel range, switch off the active oscillation damping mode when the control lever is located in the zero-position range, and switch on the active oscillation damping mode without causing movement of the large manipulator when the control lever is located within the oscillation damping range.

Abstract: A manipulator includes an articulated boom configured to be folded out. The articulated boom includes a turntable that can be rotated about a vertical axis, a plurality of boom segments, electrically-actuated proportional valves, and a remote control. The boom segments are pivotable via respective drive assemblies. The electrically-actuated proportional valves are respectively arranged directly on or in proximity to the respective drive assemblies to be controlled. The remote control includes at least one control lever configured to be displaced in a plurality of actuating directions. The manipulator further includes an electronic controller configured to actuate the drive assemblies via a travel command. The travel command indicates a desired movement of the boom tip. The travel command is generated in response to displacement of the control lever into at least one of the plurality of actuating directions. And, the travel command causes actuation of the respective electrically-actuated proportional valves.

Abstract: A large manipulator includes a chassis, a turntable arranged on the chassis and rotatable around a vertical axis via a rotary drive, and an articulated mast including two or more mast segments pivotably-movably connected, via articulated joints, with the respectively adjacent turntable or mast segment via a respective drive. The large manipulator further includes a mast sensor system configured to detect position of at least one point of the articulated mast or a pivot angle of at least one articulated joint and configured to generate sensor output signals. The large manipulator further includes a control device configured to actuate the drive in a normal operation for mast movement and to limit speed of movement of the articulated mast depending upon the sensor output signals. The drive is manually controllable in an emergency operation. The large manipulator further includes at least one limiting means, which, in the emergency operation, limit speed of the drive to a pre-specified maximum value.

Abstract: A thick matter pump includes a hydraulically-driven two-cylinder piston-pump configured to generate a thick matter delivery pressure. The thick matter pump also includes a hydraulic pump configured to apply hydraulic fluid to the two-cylinder piston-pump via a drive line. The hydraulic pump includes a pressure regulator that is adjustable to a target value of pressure of the hydraulic fluid for limiting the thick matter delivery pressure, and the thick matter delivery pressure is adjustably limited. The pressure of the hydraulic fluid is limited in the drive line, via an adjustable pressure-limiting valve, to an adjustable maximum pressure. The target pressure of the pressure regulator and the maximum pressure of the hydraulic fluid are adjustable through a joint adjusting element.

Abstract: A large manipulator including an extendable folding boom. The extendable boom includes a turntable that is rotatable about a vertical axis and boom segments pivotable at folding joints about folding axes in relation to an adjacent boom segment or the turntable via respective drive assemblies. The extendable boom further includes rotary angle sensors configured to detect folding angles between adjacent boom segments or between one of the boom segments and the adjacent turntable. The extendable boom further includes an inclination sensor arranged at a last of the boom segments forming a boom tip and a computing unit configured to establish an elastic deformation of the extendable folding boom based on the detected folding angles and the inclination of the last boom segment.

Abstract: An electrohydraulic control circuit includes a hydraulically-operated drive assembly and an emergency valve. The hydraulically-operated drive assembly includes an electrically-actuated proportional valve and hydraulic operating lines. The proportional valve is connected to the hydraulic operating lines for actuation of the drive assembly in a normal operation mode. The proportional valve is also connected to a pressure supply line and to a return line. The emergency valve is connected to the hydraulic operating lines for actuation of the drive assembly in an emergency operation mode. In the emergency operation mode, the emergency valve is actuated via an emergency operating unit.

Abstract: A frame support includes an extensible carrier having a free end, a guide configured to guide the extensible carrier in an axially-movable manner, and a vertical support unit. The vertical support unit is arranged eccentrically at the free end of the extensible carrier. The frame support is adapted to be coupled to a vehicle.

Abstract: The invention relates to a large manipulator (1), in particular a truck-mounted concrete pump, having a mast pedestal (3) which is rotatable about a vertical axis by means of a rotary drive and which is arranged on a chassis (2), having an articulated mast (4) which comprises two or more mast arms (5, 6, 7, 8), wherein the mast arms (5, 6, 7, 8) are connected, so as to be pivotable by means of in each case one pivoting drive, to the respectively adjacent mast pedestal (3) or mast arm (5, 6, 7, 8), having a control device, which actuates the drives, for the mast movement, and having a mast sensor arrangement for detecting the position of at least one point of the articulated mast (4) or a pivot angle (?1, ?2, ?3, ?4) of at least one articulated joint. The large manipulator is characterized in that the control device (17) is designed to limit the speed of the mast movement on the basis of the output signal from the mast sensor arrangement.

Abstract: The invention relates to a vehicle (1), in particular a truck-mounted concrete pump, having a pivotable turntable (3), arranged on a frame (2), with a boom (4) constructed thereon, and a frame outrigger (5) which has carriers (6, 6a) that are retractable into the vehicle profile and/or extendable out of the vehicle profile, wherein the carriers (6, 6a) are each guided on an extension portion (7, 7a) fixed to the vehicle and form a telescope (8, 8a) therewith, wherein the extension portions (7, 7a) fixed to the vehicle are arranged behind a cab (9) in the direction of travel, wherein a folding part (11, 11a) connected via a joint (10, 10a) is arranged in each case at a free end of the carriers (6, 6a), wherein a support leg (12, 12a) is arranged on each folding part (11, 11 a), wherein the joint (10, 10a) is arranged outside the respective extension portion (7, 7a) in the retracted transport position of the carriers (6, 6a), such that the folding part (11, 11a) is foldable laterally into the vehicle profile in

Abstract: A large manipulator includes a folding-out articulated mast with a turntable rotatable about a vertical axis and with a plurality of mast segments. The mast segments are each pivotable on articulated joints about articulated axes relative to an adjacent mast segment or the turntable. The at least one mast is formed by a hollow structure of wall elements connected with each other. At least one of the wall elements includes a recess region with a recess. A material thickness of the at least one wall in the recess region is less than a material thickness of the at least one wall element outside the recess region.

Abstract: A thick matter pump includes a hydraulically-driven two-cylinder piston-pump configured to generate a thick matter delivery pressure. The thick matter pump also includes a hydraulic pump configured to apply hydraulic fluid to the two-cylinder piston-pump via a drive line. The hydraulic pump includes a pressure regulator that is adjustable to a target value of pressure of the hydraulic fluid for limiting the thick matter delivery pressure, and the thick matter delivery pressure is adjustably limited. The pressure of the hydraulic fluid is limited in the drive line, via an adjustable pressure-limiting valve, to an adjustable maximum pressure. The target pressure of the pressure regulator and the maximum pressure of the hydraulic fluid are adjustable through a joint adjusting element.

Abstract: A large manipulator includes a boom arm with a turntable and a plurality of boom segments, which are configured to be pivoted at respective articulation joints with respect to an adjacent boom segment or the turntable. The boom arm further includes at least one inertial sensor configured to measure inclination and/or acceleration of at least one of the plurality of boom segments.

Abstract: An extendable folding boom includes a turntable rotatable about a vertical axis, a plurality of boom segments pivotable at folding joints about respectively horizontal folding axes with respect to an adjacent boom segment or the turntable, and a sensor configured to sense a folding angle between two adjacent boom segments or between a boom segment and the turntable. The sensor includes a field-generating element and a field-sensing element spaced apart from each other along a horizontal axis in a contactless arrangement.