Abstract: The invention relates to a self-propelled construction machine which has a drive means 5 having a left and a right crawler track 3A, 3B, in particular a slipform paver, and to a method for controlling a self-propelled construction machine, in particular a slipform paver. The construction machine comprises a machine frame 1, a working means arranged on the machine frame, a crawler track 3A on the left in the working direction A and a crawler track 3B on the right in the working direction, and a drive means 5 for driving the left crawler track at a predetermined chain speed and the right crawler track at a predetermined chain speed.

Abstract: A self-propelled construction machine comprises a control unit configured in such a way that a point of reference on the construction machine moves along a route. A processing unit is configured in such a way that the position of at least one kink on the target route is determined from the imported data, at least a portion of the target route is displayed, and, for the section of the target route in which the target route has the kink, an interpolation curve that is substantially free of kinks is calculated. The relevant section of the target route is replaced by the interpolation curve for the determination of a modelled route. The control of the drive device is then not based upon the predetermined target route, but rather the modelled target route.

Abstract: A working combination (10) having self-propelled first (12) and further vehicles (14) that are embodied to move one behind another with a setpoint spacing (D) in a working direction (A); the working combination (10) having a spacing monitoring device (26) that outputs a spacing signal on the basis of a detection state of the spacing monitoring device (26) which depends on the actual spacing (D) of the vehicles (12, 14), and that comprises a beam source (28) and a sensor arrangement (30) detecting the radiation (32) of the beam source (28); one vehicle (12), constituting a source vehicle (12), carrying the beam source (18); the beam source (28) radiating, toward the respective other vehicle (14) constituting a target vehicle (14), an electromagnetic radiation (32) directed in such a way that the radiation (32) is present only in a beam space (40) that extends over a first angular region (43) around a first beam space axis (42) and over a second angular region (46) around a second beam space axis (44) and that

Abstract: A civil engineering machine has a machine control unit configured to determine data which defines the position and/or orientation of a reference point on the civil engineering machine in relation to a reference system independent of the position and orientation of the civil engineering machine. A geometrical shape to be produced on the ground is preset in either a machine control unit or a field rover control unit. The field rover is used to determine a position of at least one identifiable point of the preset geometrical shape in the independent reference system. Curve data defining a desired curve in the independent reference system, corresponding to the preset shape, is determined at least partially on the basis of the position of the at least one identifiable point of the preset geometrical shape in the independent reference system.

Abstract: A slipform paver comprises a machine frame carried by rolling assemblies, at least two of which being drivable and at least one being steerable, as well as comprising a support arranged on the machine frame for a slipform mould and a controller for controlling the rolling assemblies to adjust the velocities of the drivable rolling assemblies and the steering angles of the one or more steerable rolling assemblies. The controller is configured such that, when the steering angles of the one or more steerable rolling assemblies change, the velocities of the drivable rolling assemblies are adjusted so as to reduce the change in the velocity at which a reference point referring to the support for the slipform mould will move along a predefined trajectory, said change in velocity being caused by changing the steering angle. The quality of the concrete profile produced by the slipform paver is thereby improved.

Abstract: The invention relates to a self-propelled construction machine and to a method for controlling a self-propelled construction machine. The construction machine according to the invention has a position-determining device 13 for determining the position of a reference point R on the construction machine in a coordinate system (X, Y, Z) independent of the construction machine. The position-determining device has a navigation satellite system receiver 14 for receiving satellite signals from a global navigation satellite system 15 (GNSS) and a computing unit 16 which is configured so that the position of a reference point (R) on the construction machine and the orientation (?) of the construction machine can be determined based on the satellite signals in a coordinate system (X, Y, Z) that is independent of the construction machine.

Abstract: The invention relates to a slipform paver and a method for operating a slipform paver. The slipform paver 1 according to the invention comprises a machine frame 3 carried by rolling assemblies 7, 8, 10, 11, at least two of said rolling assemblies being drivable and at least one rolling assembly being steerable, as well as comprising a support 17 arranged on the machine frame 3 for a slipform mould 18 and a control unit 21 for controlling the rolling assemblies so as to adjust the velocities of the drivable rolling assemblies and the steering angle of the one steerable rolling assembly, or the steering angles of the steerable rolling assemblies.

Abstract: A civil engineering machine has a machine control unit configured to determine data which defines the position and/or orientation of a reference point on the civil engineering machine in relation to a reference system independent of the position and orientation of the civil engineering machine. A geometrical shape to be produced on the ground is preset in either a machine control unit or a field rover control unit. The field rover is used to determine a position of at least one identifiable point of the preset geometrical shape in the independent reference system. Curve data defining a desired curve in the independent reference system, corresponding to the preset shape, is determined at least partially on the basis of the position of the at least one identifiable point of the preset geometrical shape in the independent reference system.

Abstract: A construction machine system comprises a self-propelled construction machine and a total station. The construction machine possesses a machine frame, a drive means and a working means for altering the terrain. A position-determination means determines the position of a reference point on the machine in a first coordinate system independent of the machine. The position-determination means receives satellite signals from a global navigation satellite system (GNSS), wherein in normal operation the machine is controlled using the GNSS such that a reference point on the machine moves along a set target travel path. In a total station control mode, the machine is controlled without the GNSS and only using the total station based on a position of the standpoint and orientation of the total station ascertained in the GNSS control mode, and the position-determination of the construction machine occurs in a second coordinate system based on the total station.

Abstract: A multi-stage piston compressor with a cooling arrangement is provided. The multi-stage piston compressor includes a compressor unit having a plurality of air-cooled cylinders on a crankcase housing, a motor unit that is mounted at an end face of the crankcase housing, and a cooler unit at an opposing end face of the compressor unit. An axial fan wheel of the cooler unit blows cooling air substantially outwards toward the compressor unit. In order to conduct cooling air externally in the region of said compressor unit, at least one air guide housing mounted between the cooler unit and the crankcase extends at least partially radially around the crankcase in a curved manner, such that the axial air flow generated by the axial fan wheel is at least partially guided around the crankcase in the radial direction and toward at least one cylinder at the air outlet side of the air guide housing.

Abstract: A self-propelled construction machine comprises a control unit configured in such a way that a point of reference on the construction machine moves along a route. A processing unit is configured in such a way that the position of at least one kink on the target route is determined from the imported data, at least a portion of the target route is displayed, and, for the section of the target route in which the target route has the kink, an interpolation curve that is substantially free of kinks is calculated. The relevant section of the target route is replaced by the interpolation curve for the determination of a modelled route. The control of the drive device is then not based upon the predetermined target route, but rather the modelled target route.

Abstract: A civil engineering machine has a machine control unit configured to determine data which defines the position and/or orientation of a reference point on the civil engineering machine in relation to a reference system independent of the position and orientation of the civil engineering machine. A geometrical shape to be produced on the ground is preset in either a machine control unit or a field rover control unit. The field rover is used to determine a position of at least one identifiable point of the preset geometrical shape in the independent reference system. Curve data defining a desired curve in the independent reference system, corresponding to the preset shape, is determined at least partially on the basis of the position of the at least one identifiable point of the preset geometrical shape in the independent reference system.

Abstract: A system is provided for varying the width of a molded concrete slab on the fly as the slab is being molded. Position and height of the paving machine relative to an external reference system are determined and controlled using at least two 3D stringless reference objects. An additional sensor provides a signal corresponding to a frame width and thus a concrete slab width, and an actuator controls the frame width actively as the paving machine advances.

Abstract: A construction machine apparatus includes a plurality of ground engaging supports, a machine frame supported from the ground engaging supports and a milling drum supported from the machine frame. A milling drum location detection system is configured to determine a drum location in an external reference system. A location indicator system includes a memory configured to store information identifying a location of one or more areas to be avoided in the external reference system, and a controller configured to compare the drum location to the location of the one or more areas to be avoided, and to provide an output corresponding to a proximity of the milling drum to the location of the one or more areas to be avoided.

Abstract: A system is provided for varying the width of a molded concrete slab on the fly as the slab is being molded. Position and height of the paving machine relative to an external reference system are determined and controlled using at least two 3D stringless reference objects. An additional sensor provides a signal corresponding to a frame width and thus a concrete slab width, and an actuator controls the frame width actively as the paving machine advances.

Abstract: An intake box of an air supply system in a compressor arrangement, having an intake grill and an air intake pipe arranged on the compressor side, wherein the intake grill and the air intake pipe are arranged between a lower lid and an upper lid, wherein, in addition, a sound damping box for minimizing noise emissions is arranged between the intake grill and the air intake pipe, wherein the longitudinal dimension and width dimension of the sound damping box are each at least three times as large as the depth dimension of the sound damping box.

Abstract: A self-propelled construction machine has an image capturing unit for capturing an image of the terrain, a display unit on which the captured image is displayed, and a data processing unit. In the displayed image, objects that are relevant to the building project, for example manhole covers, water inlets or curbs, are identified and a spatial data set containing information regarding the position of the identified objects in a reference system which is independent of the movement of the construction machine is determined from the image data of the capturing unit. The construction machine is then controlled in order to carry out translational and/or rotational movements on the terrain and/or to install a structure on the terrain or to alter the terrain on the basis of the spatial data set. As a result, the previously identified objects can be taken into account in the building project.

Abstract: A slipform paving machine includes a laser source for generating a laser reference plane. At least two laser receivers are mounted on the machine and intersect the laser reference plane. Inputs from the laser receivers are utilized to control distortion of the frame of the slipform paver machine.

Abstract: A civil engineering machine and a method of controlling the machine are based on the position of at least one reference point which is relevant to the control of the civil engineering machine being changed, as the civil engineering machine moves, as a function of a relative position of the at least one reference point relative to a desired path of travel.

Abstract: A system for varying the width of a molded concrete slab on the fly as the slab is being molded. Position and height of the paving machine relative to an external reference system are determined and controlled using at least two 3D stringless reference objects. An additional sensor provides a signal corresponding to a frame width and thus a concrete slab width, and an actuator controls the frame width actively as the paving machine advances.