Putzmeister Engineering GmbH

A printing system for automatically producing a building part via 3D printing on a print bed, includes: a first discharge device for forming a strand of construction material at a first discharge portion of the first discharge device, wherein the first discharge device can be moved relative to the print bed in order to automatically arrange the construction material on the print bed in at least one construction material layer of the building part; and at least one second discharge device for discharging at least one functional material, different from the construction material, at a second discharge portion of the second discharge device, wherein the second discharge device can be moved relative to the print bed in order to automatically coat the at least one construction material layer, at least in portions, with the functional material in order to form at least one functional material layer of the building part. The first discharge portion and the second discharge portion are formed separately.

Supporting construction ( 10 ) for a working machine comprising a mast, having a supporting leg box ( 12 ), which is open to a front side ( 16 ), and having a supporting leg ( 20 ) which is mounted displaceably in the longitudinal direction for moving between a completely retracted position and a position in which it is completely extended by a maximum extension length (A), wherein the supporting leg box ( 12 ) has, in the region of the open front side ( 16 ), a first load introduction device ( 30 ) and, at a given distance (D) from the front side ( 16 ), within the supporting leg box, a single second load introduction device ( 32 ) having at least one supporting surface ( 34 ), and wherein the supporting leg ( 20 ) has a reinforcing element ( 36 ) which extends substantially along a length (L) of the supporting leg ( 20 ) and which is designed to bear on the at least one supporting surface ( 34 ) of the single second load introduction device ( 32 ).

The invention relates to a thick material pump ( 10 ) with two conveying cylinders ( 16, 18 ), the conveying pistons ( 34, 36 ) of which are each rigidly connected to a drive piston ( 38, 40 ) of an associated drive cylinder ( 26, 28 ) via a common piston rod ( 30, 32 ), wherein a conveying operating mode is provided in which the conveying cylinders ( 16, 18 ) are driven in counter-phase mode, in order to convey thick material ( 58 ) via a transfer tube ( 24 ) alternately connected to the conveying cylinders ( 16, 18 ) from a hopper ( 14 ) into a conveying pipe ( 56 ) ( 50 ), and a cleaning operating mode is provided in which the conveying cylinders ( 16, 18 ) jointly assume an end position on the hopper side and the transfer tube ( 24 ) is alternately switched between the two conveying cylinders ( 16, 18 ).

A construction machine for conveying thick material has: an electrical energy storage device, an electrical drive device that is electrically connected to the electrical energy storage device, a thick material pump unit and a base frame that has at least three support points spaced apart from one another transversely to a direction of gravity and at which the construction machine is supported relative to a base. In a plan view of the construction machine, a support surface of the construction machine extends between the support points, wherein the electrical energy storage device, the electrical drive device, the thick material pump unit and the base frame are arranged relative to one another in such a way that an overall center of gravity of the construction machine is arranged within the support surface in the plan view of the construction machine and along a longitudinal direction of the construction machine at a distance from a geometric center of gravity of the support surface.

A method for operating a construction-material and/or viscous-material pump for conveying construction material and/or viscous material has the steps of: a) determining a required value of a power or of a size of the motor system, corresponding to the power, for moving the conveying piston, b) setting, on the basis of the required value, a speed value of the motor system in such a manner that a power and/or speed reserve value between an operating point, wherein the operating point is defined by the required value of the power or of the size and the speed value, and a characteristic curve of the motor system, wherein the characteristic curve is defined by maximum values of the power or of the size and speed values, wherein maximum values are different for different speed values at least in sections, is greater than or equal to a reserve limit value.

An apparatus for the output of a fluid process material, in particular a process material in the form of concrete, mortar or adhesive, has a distributor boom comprising a plurality of boom arms, connected to each other at joints, having a process material delivery line formed by a plurality of pipe segments, which are preferably joint-connected to each other by pipe bends and rotating couplings. The delivery line is guided along the individual boom arms and fixed thereto. A tool, which is received on the distributor boom, has a device for the output of the process material. The tool has a buffer vessel, which receives the process material from the process material delivery line, and an output element for the output of the process material, fed from the buffer vessel, at an output location.

A building material apparatus includes at least one building material transport part which follows a building material drum, wherein the building material transport part is designed to transport building material which is to be at least partially cured, and at least one part sensor. The part sensor is arranged on and/or in the building material transport part and is designed to detect at least one intensive variable, or at least one variable which corresponds at least to the intensive variable, of the building material in the building material transport part.

The invention relates to a method for controlling the movement of an end hose arranged on a concrete placement boom of a concrete pump with a display device arranged in the region of the end hose by means of a control device, comprising the following steps: outputting a signal for displaying a predefined movement direction to the display device; receiving a predefined speed for moving the end hose from an actuation device; and calculating and outputting control signals for controlling the concrete placement boom in such a way that the end hose is moved in the predefined movement direction at the predefined speed. The invention also relates to a corresponding control device, a system, a concrete placement boom and a computer program for controlling the movement of an end hose arranged on a concrete placement boom of a concrete pump.

The invention relates to, inter alia, a thick matter conveying system ( 10 ) comprising a thick matter pump ( 16 ) for conveying a thick matter; a thick matter distributing mast ( 18 ) for distributing the thick matter to be conveyed, said thick matter distributing mast ( 18 ) having a rotary mechanism ( 19 ) which can be rotated about a vertical axis and a mast assembly ( 40 ) comprising at least two mast arms ( 41 ); a substructure ( 30 ) on which the thick matter distributing mast ( 18 ) and the thick matter pump ( 16 ) are arranged, said substructure ( 30 ) comprising a support structure ( 31 ) for supporting the substructure ( 30 ) by means of at least one horizontally and/or vertically movable support leg ( 32 ); a sensor unit ( 11 ) comprising at least one sensor for detecting a piece of operating information; and a processing unit ( 12 ) for determining a stability parameter of the thick matter conveying system ( 10 ) on the basis of the at least one detected piece of operating information and for ascertaining an intended operation of the sensor of the sensor unit ( 11 ), said sensor detecting the at least one piece of operating information. If the processing unit ( 12 ) does not ascertain an intended operation of the sensor, the processing unit ( 12 ) is designed to determine the stability parameter on the basis of an extreme value of the operating information to be detected by the sensor instead of the detected piece of operating information.

A method controls a total movement of a distribution boom, wherein the distribution boom has a number of boom arms, wherein the boom arms can be moved by means of a number of hydraulic drives. The method includes the following steps: a) monitoring whether, for the total movement, at least one drive of the drives is insufficiently supplied by a hydraulic pumping device for supplying the drives with hydraulic liquid; and b) in the event of insufficient supply, controlling a non-proportional reduction of the supply of the drives with hydraulic liquid for the non-proportional reduction of movement speeds of the drives and/or an increase of the supply of the drives with hydraulic liquid by the pumping device.