A crane apparatus with an integrated assembly for overcoming each dead position between primary and secondary parts of its operational arm includes a bearing framework attached to a chassis and is furnished with at least two telescopic supporting legs that are vertically arranged, and a bearing mast that is connected with the bearing framework, and an operational arm is attached in a pivot point and pivotable around a horizontal axis. The operational arm includes a primary part and a secondary part that are pivotally connected with each other. The secondary part is pivotal around the horizontal axis connected with the primary part of the operational arm via a dead position overcoming assembly that includes a rotational driving subsystem as well as a mechanism that is attached to part of a hydraulic cylinder for pivoting relative to the secondary part of the operational arm.

A boom system for a concrete-delivery device includes a plurality of booms which are pivotably interconnected. At least one of the booms has a recess along its length, the recess configured to at least partially receive an adjacent boom when the boom system. is in a retracted position. Side walls of the boom are extended to define the recess in the form of a channel. The recess may have a depth greater than or equal to a height of the adjacent boom so that the adjacent boom is received within the recess when the boom system is in the retracted position. Alternatively, the recess may have a depth less than a height of the adjacent boom so that the adjacent boom is only partially received in the recess when the boom system is in the retracted position.

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.

A mobile operating machine comprising a motor vehicle moved by an endothermic engine, an articulated arm, a pumping unit and a stabilizing unit wherein the endothermic engine is provided with at least two power take-offs. The mobile operating machine also comprises a hydraulic pump and an electric motor operatively connected to the endothermic engine, to the hydraulic pump and to an electric accumulator.

A foldable structure for supporting a 3D printer for building components, the foldable structure having expanded and compact positions includes: first supports spaced apart from each other in a first direction and extending in a second direction intersecting the first direction to support the foldable structure on a ground surface; second supports disposed respectively on the first supports, and being supported in a third direction for linear movement along the first supports in the second direction in the expanded position of the foldable structure; and a third support disposed between the second supports. The second supports include: shafts; and hinges disposed between the shafts and the first supports to tilt the shafts toward the first supports to transition from the expanded position to the compact position and to raise the shafts from the first supports to transition from the compact position to the expanded position.

An automatic leveling system to maintain a 3D printer for building construction components in a substantially horizontal orientation includes: a support structure to support on a ground surface at least two columns each being supportable at a variable distance above the ground surface; a signal generator to generate a rotatable signal in a substantially horizontal plane; and sensors mounted on the columns to detect the rotatable signal. The variable distances are adjustable based on the detection of the rotatable signal by the sensors.

An hybrid mobile operating machine comprising a motor vehicle driven by an internal combustion engine, an articulated arm associated with a pipe, a pumping unit and a stabilization unit, primary services and auxiliary services, wherein the internal combustion engine is suitable to power at least a first and a second power take-off. The mobile operating machine is provided with both a first drive unit which comprises at least one electric accumulator, a first electric motor and a first hydraulic pump, and a second drive unit which comprises at least one second electric motor and a second hydraulic pump.

A method is provided for operating a working machine having a device for conveying thick material. A number of target values relating to the operation of the device for conveying thick material can be adjusted by a user. The method includes the following steps: detecting a number of actual values of the device; calculating a target value optimum for a respective target value of the number of adjustable target values based on the number of detected actual values; and outputting a notification for the user, in the event that an adjusted target value of the number of adjustable target values does not correspond to its calculated target value optimum.

a nozzle assembly for a 3D printer of building construction includes: a chamber to contain a flowable mixture to form a constructional material layer; an outlet to discharge the flowable mixture in a first direction, the outlet being supported for movement in a second direction intersecting the first direction; and an edge smoothing device extending in the first direction from the lower end of the outlet to guide the flow of the flowable mixture discharged from the outlet and to provide a substantially flat side surfaces of the constructional material layer formed according to the movement of the outlet in the second direction.

A mobile concrete distribution system having a chassis, a primary boom member, an auxiliary boom member, and a concrete conduit pipe. The primary boom member is rotatably connected to a main slew drive, elongated, and extends both rearwardly and forwardly of the main slew drive. The auxiliary boom member is rotatably connected to the primary boom member at a distal end of the front section of the primary boom member via a secondary slew drive, which is configured to enable the auxiliary boom member to rotate three hundred sixty degrees relative to the primary boom member. The concrete conduit pipe extends upwardly from the main slew drive, along an entire length of the front section of the primary boom member, vertically through the secondary slew drive, and along an entire length of the auxiliary boom member.