A paving machine is described. The paving machine includes a powertrain with a power unit. The power unit may include a diesel generator and a battery. The powertrain may also include one or more drivetrains. The drivetrains may include a hydraulic drivetrain and an electric drivetrain. The drivetrains may receive power from the power unit for supplying power to actuators of the hydraulic drivetrain and the electric drivetrain. The paving machine may be a curb-forming machine including the battery, the hydraulic drivetrain, and the electric drivetrain. The hydraulic drivetrain of the curb-forming machine may include a cylinder, crawler, steering assembly, and auger, and the electric drivetrain may include a vibrator. The paving machine may also include a number of other types of paving machines. Where the paving machine includes the hydraulic drivetrain, a buffer may be provided to ensure sufficient hydraulic power in response to demand changes.

In a self-propelled construction machine (1), in particular slipform paving machine, comprising a machine frame (2), at least three travelling devices (14), wherein the travelling devices (14) are each connected to the machine frame (2) by means of lifting columns (12), wherein at least two of the at least three travelling devices (14) are steerable by means of one each steering drive (6), wherein the respective steering drive (6) comprises at least one first part (10), which is connected to the respective travelling device (14), and one second part (16), which is connected to the respective lifting column (12),
it is provided that the steering drive (6) comprises at least one first toothed rack (22), wherein the first toothed rack is movable by means of at least one first linear drive means (26), wherein teeth of the at least one toothed rack engage with teeth of at least one toothed wheel (17), and the toothed wheel is thus rotatable by means of the movement of the toothed rack.

A self-propelled construction machine comprises a machine frame having a working means arranged thereon, and a drive means for driving left and right crawler tracks at respective predetermined chain speeds. A control unit is configured such that, based on a distance between a front reference point with respect to the machine frame in the working direction and a predetermined path, the chain speed(s) of the left and/or right crawler track is predetermined such that the front reference point moves on the predetermined path. The control unit is further configured such that, during cornering, the control is corrected based on a distance between a rear reference point with respect to the machine frame in the working direction and the predetermined path such that the distance between the rear reference point with respect to the machine frame in the working direction and the predetermined path is reduced.

A conveyor mold system for slip forming a concrete barrier has a concrete paving machine having a main frame having machine legs and machine tracks, an auger system for receiving concrete, a barrier paving mold having a hopper for receiving concrete from the auger system, a conveyor assembly main frame having a front roller and a rear roller, and a belt having a pattern with the belt positioned on the front roller and the rear roller.

A bridge paving device includes one or more reference receivers to locate the bridge paving device in three-dimensional space. A computer apparatus receives the location of the bridge paving device and associates the location with a bridge paving design profile. The computer apparatus independently actuates a system of hydraulic actuators of the bridge paving device to level and orient the bridge paving device regardless of the travel surface the linear movement elements are running on. Additional hydraulic actuators may adjust the shape of the bridge paving device over time as the bridge paving device travels a linear distance of the bridge to be paved. The shape adjustment alters a crown or inversion applied to the bridge such that run-off characteristics are more variable and controllable along the entire span of the bridge.

Systems and methods for the continuous slip form construction of concrete barriers over support cages. A tube feeder of a slip form construction system can include angled tubes that can direct reinforcing bars into a concrete barrier and also provide space between the tubes for insertion of a support cage through the system and into the concrete barrier.

The invention relates to a self-propelled construction machine, in particular a road milling machine or a slipform paver, which can carry out translational and/or rotational movements for a planned project on a terrain. In addition, the invention relates to a method for visualizing the working environment of a construction machine moving on the terrain, in particular a road milling machine or a slipform paver. The construction machine comprises an image recording unit for recording an image segment of the terrain located in a coordinate system (X, Y, Z) dependent on the position and orientation of the construction machine on the terrain, and a display unit for displaying the image segment of the terrain. Moreover, the construction machine comprises a data processing unit which is configured in such a way that a depiction of a part of the project located in the image segment is superimposed on the image segment of the terrain displayed on the display unit, such that the project is visualized in the image segment. The display unit thus displays not only the actual image segment, but also a virtual image of the project, thus widening the perception of the machine operator. As a result, the machine operator can identify on the display unit whether the project forming the basis of the control matches the reality.

A method of slip forming a concrete structure can include using a first slip form mold that travels along a path to form a portion of a concrete structure by delivering a first flow of concrete into the first mold through a first hopper. The first hopper can be configured to receive the first flow of concrete. The portion of the concrete structure can be modified using a second slip form mold different from the first mold by advancing the second mold along the concrete structure and, while advancing the second mold, delivering a second flow of concrete into the second mold through a second hopper that is configured to receive the second flow of concrete.

A slipform paving machine includes an offset mold, and a mold frame actuator which allows the height of the offset mold relative to the paving machine to be controlled. Internal actuators within the mold allow corresponding control of side form assemblies to control both height and profile of a resulting slipformed concrete structure.

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.