An electrohydraulic control circuit for driving a hydraulically actuated actuating element (5, 6), by means of which a segment (5.3) of a manipulator, in particular of a large manipulator for truck-mounted concrete pumps, can be adjusted in terms of its orientation, wherein there are provided an electrically driven first valve (2.4), which is connected to hydraulic working lines of the actuating element (5.6) for the drive thereof, and leak-free check valves (2.5, 2.6) provided in the working lines of the actuating element (5.6), which valves are arranged on the actuating element (5.6) or on the segment (5.3) associated with this actuating element (5.6) and can be released for the normal operation of the actuating element (5.6), wherein the release of the check valves (2.5, 2.6) is driven by an electronic control unit (ECU) separate from the first valve (2.4) and the check valves (2.5, 2.6).

Methods, apparatuses, and systems to provide real-time adjustment for the three-dimensional printing of architectural structures are disclosed herein. An example apparatus includes a printing control processor configured to receive a model file that specifies a three-dimensional representation of a building structure to be printed. The processor slices the model file into individual layers. Each layer has a height corresponding to a height of a layer to be printed. The processor converts the layers into computerized instructions for a three-dimensional printer. During printing, the processor receives adjustment information that is indicative of an adjustment made by the three-dimensional printer during the printing of a current layer. The processor applies the adjustment information to subsequent computerized instructions that are to be executed after printing the current layer. The processor then executes the computerized instructions for the subsequent layers including causing the three-dimensional printer to print the layers with the adjustment.

Embodiments of a constructions system for constructing a structure atop a foundation are disclosed. In an embodiment, the construction system includes a rail assembly. The rail assembly is configured to be mounted to the foundation. In addition, the construction system includes a gantry movably disposed on the rail assembly. The gantry is configured to translate along a first axis relative to the rail assembly. Further, the construction system includes a printing assembly movably disposed on the gantry. The printing assembly is configured to translate along a second axis relative to the gantry. The second axis is orthogonal to the first axis. The printing assembly is configured to deposit vertically stacked layers of an extrudable building material onto a top surface of the foundation to construct a structure.

The invention relates to a method for detecting and verifying a working position of a mobile concrete pump, said method comprising the steps: a) setting up and at least partially supporting the concrete pump at a set-up position; b) detecting position-related data of a working position, wherein the working position is located in a region of a surface to be concreted which is remote from the set-up position; c) comparing the position-related data with a theoretical working area resulting from the set support; and d) outputting a signal as to whether the working position can be operated. This makes it possible to set up or support a mobile concrete pump in the most optimal manner possible. The invention also relates to a method for determining a suitable support setting, a measurement device, and a mobile concrete pump.

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 method for manufacturing a tower structure of a wind turbine includes printing, via an additive printing device, a plurality of concentric sections of the tower structure of the wind turbine. The concentric sections may be printed simultaneously from concrete, may include tensioning cables or other structural supports, and may define other support flanges or overhangs. After curing, the method may include raising an inner section of the plurality of concentric sections to a top of an adjacent outer section and joining the two sections. This process may be repeated to telescope the concentric sections and raise the tower structure.

A method for manufacturing a tower structure of a wind turbine includes printing, via an additive printing device, the tower structure of the wind turbine of a cementitious material. The method also includes printing, via the additive printing device, one or more additional airflow modifying features on an outer surface the tower structure of the wind turbine so as to reduce and/or prevent vortex shedding, excitation, and/or drag of the tower structure. Further, the method includes curing the cementitious material so as to form the tower structure.

The invention relates to a process for producing a component (1) from a curable material, a new layer (2) of the material being printed in periodically recurring steps in a 3D printing process onto a layer (3) located thereunder so as to have lower reinforcing elements (4) which protrude above the top of this new layer (2), and also relates to a component produced by a corresponding process. Known processes and components do not allow reinforcement over a large surface area.

The object of designing a process in such a way that the reinforcement thereof withstands high loads is achieved by providing that, after each layer (3) has been printed, upper reinforcing elements (5) are connected to the lower reinforcing elements (4) so as to extend said lower reinforcing elements and so as to form the lower reinforcing elements of the subsequent layer. A corresponding component is the subject of claim 11.

A printing method forms a continuous strand of building material for 3D printing of a structural part via a printing system. The printing system has a printing apparatus that dispenses building material out of the printing apparatus and shapes building material to form a strand of building material, and a discontinuous building material pump that discontinuously conveys building material for discontinuously dispensing conveyed building material out of the printing apparatus. The printing method includes the steps of: a) discontinuously conveying building material via the discontinuous building material pump and discontinuously dispensing conveyed building material out of the printing apparatus and shaping conveyed building material via the printing apparatus, and b) discontinuously moving the printing apparatus during the discontinuous conveying and the discontinuous dispensing such that the dispensed and shaped building material forms a continuous strand of building material.

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.