Abstract: The present invention relates to a rubber tire roller for ground compaction, comprising a machine frame and an operating platform and front and rear undercarriages supporting the machine frame, wherein the undercarriages each comprise at least one wheel. A fundamental idea of the present invention lies in viewing indentations that are open to the side.

Abstract: The present invention relates to a ground milling machine, in particular a road milling machine, for removing ground material, comprising a machine frame having a chassis, a milling drum supported on a machine frame, and a transport device having at least one conveyor belt, which is configured for conveying removed ground material in a conveying direction away from the milling drum to a discharge point, as well as to a method for operating a ground milling machine. One aspect of the present invention is to provide an electrostatic precipitator, which reduces the dust pollution.

Abstract: A device for ground compaction, comprising a frame and a drive motor supported by the frame, a vibration exciter driven by the drive motor and a ground compaction apparatus, in particular a base plate or a roller drum, that is connected to the vibration exciter, wherein the vibration exciter causes the ground compaction apparatus to vibrate at a fixed vibration frequency or within a vibration frequency range during a compaction operation, and wherein a conversion device for the conversion of vibrations into electric energy is provided which converts vibrations of the device for ground compaction into electric energy, wherein the conversion device comprises two spring-mass systems with different resonance frequencies, and wherein a control unit is provided which determines the degree of compaction of the ground from the electric energy obtained by the individual spring-mass systems, in particular the respective voltages.

Abstract: A road finisher includes a screed plate extending at right angles to the working direction of the road finisher, a tamper bar disposed rearwardly and/or forwardly of the screed plate in the working direction, wherein at least one electrically operated heating element is configured to heat up a heating surface facing a road subsurface, the heating element comprising a heating layer at least partially obtained through thermal spraying onto a substrate surface, and a piston rod with connecting means to a tamper bar drive. The tamper bar is connected to the piston rod with an upper surface of the tamper bar contacting a lower surface of the piston rod, wherein the piston rod is single-pieced with regard to its connecting means and its lower surface, and the heating layer is located between the piston rod and the tamper bar, especially applied to the lower surface of the piston rod.

Abstract: A road paver is provided with a drive, a bunker, a material conveying device, a screed comprising a tamping device and an electric heating device on the screed and/or on the tamping device, wherein a control unit is configured in such a manner that it determines, by means of a measurable electrical operating parameter of the electrical heating device on the screed and/or on the tamping device, the weight and/or the center of gravity and/or the width of the screed transversely to the working direction of the screed. A method for determining a width and/or a weight and/or a center of gravity of a screed of a road paver, comprising the steps: measuring an electrical variable of a heating device, in particular a heating power, a heating resistance or a power consumption of the heating device; calculating the weight and/or the center of gravity and/or the width of the screed transversely to the working direction of the screed by means of the electrical operating variable.

Abstract: The present invention relates to a method for determining and monitoring the mass of the milled material removed by a ground milling machine, comprising mounting a discharge belt on the ground milling machine via a pivot bearing and a tensile connection in such a manner that it can pivot at least about a horizontal axis, determining a tensile force (Fz) exerted by the discharge belt to the tensile connection, calculating a mass flow (qm) of the milled material removed by the ground milling machine from the measured tensile force (Fz) and the conveying speed of the discharge belt, and calculating the loaded mass of the milled material removed by the ground milling machine from the mass flow (qm) and the loading time (t).

Abstract: The present invention relates to an attachment screed unit for a road paver, comprising a connecting screed, at least one adjusting screed which is adjustably mounted on the connecting screed and which is adjustable between a retracted position (P1) and an extended position (P2), as a result of which the paving width (b4) of the attachment screed unit can be set in a variable manner, and a hydraulic adjusting device, which is arranged in such a manner that it can adjust the at least one adjusting screed between the retracted position (P1) and the extended position (P2), the adjusting device comprising an electro-hydraulic unit which is arranged on the attachment screed unit (10), and the electric hydraulic unit comprising a separate hydraulic circuit with at least one hydraulic pump and an actuator. The present invention further relates to a road paver with such an attachment screed unit.

Abstract: The present invention relates to a roll-off transport device, particularly a roll-off tipper, comprising a bottom structure, a connecting structure which is connected, particularly rigidly, to the bottom structure on the face side and protrudes upwardly therefrom, and a loading arm connection arranged on the connecting structure for the loading arm of a swap body vehicle. The present invention also relates to a transport unit comprising a swap body vehicle and a roll-off transport device according to the present invention.

Abstract: The present invention relates to methods for mounting a milling unit of a ground milling machine and to a ground milling machine comprising a mountable and dismountable milling unit.

Abstract: The present invention relates to methods for dismounting and mounting a milling unit of a center rotor type milling machine, to center rotor type milling machines comprising a mountable and dismountable milling unit, as well as to a transport unit.

Abstract: A road finisher comprising a screed plate extending at right angles to the working direction of the road finisher, and a tamper bar disposed rearwardly and/or forwardly of the screed plate in the working direction, wherein at least one electrically operated heating element is present, which is configured so as to heat up a heating surface facing a road subsurface, and wherein the heating element comprises a heating layer at least partially obtained through thermal spraying onto a substrate surface, wherein the tamper bar is made from two parts with an upper tamper bar member and a lower tamper bar member assembled together. Further, a tamper bar for a road finisher and a method of manufacturing a tamper bar are provided.

Abstract: The present invention relates to a ground milling machine with two cooling ducts, which allow a mutually separated guidance of cooling air. The present invention further relates to such a cooling system and a method for cooling a ground milling machine.

Abstract: A tamping beam device of a paving screed, in particular of a road paver, is provided with a tamping beam arranged on a connecting rod, with a drive shaft connected to the connecting rod via an eccentric device, the eccentric device being configured such that a first and a second stroke adjustment position of the connecting rod can be adjusted depending on the direction of rotation of the drive shaft. Stroke adjustment is effected via an eccentric device with a thrust member comprising an inclined sliding surface and with an eccentric ring and a slide guidance. A method for changing the stroke of a tamping beam includes changing the direction of rotation of the eccentric device.

Abstract: The invention relates to a tool device for a ground milling machine, particularly a road milling machine, a recycler, a stabilizer or a surface miner. The tool device comprises a milling chisel with a highly wear-resistant chisel tip, particularly comprising PCD material, and a chisel shaft extending along a longitudinal axis, and a chisel holder with a shaft receptacle, the chisel shaft of the milling chisel having at least one tapering section narrowing in a direction away from the chisel tip. Furthermore, a fastening device is provided, which is designed in such a way that it pulls the milling chisel along its longitudinal axis and in the direction away from the chisel tip into the shaft receptacle, the shaft receptacle of the chisel holder being designed complementary to the chisel shaft of the milling chisel in such a way that the tapering section, when braced by the fastening device, bears against the chisel holder in the shaft receptacle in a frictionally locking manner shaft receptacle.

Abstract: The present invention relates to a method for controlling a work train including a self-propelled road paver and a self-propelled feeder travelling ahead of the road paver, to a work train comprising a self-propelled road paver and a self-propelled feeder, as well as to a feeder and to a road paver for such a work train. According to one aspect of the present invention, the control of the road paver is effected automatically, to which end particularly the position of the feeder is determined and travel commands for the road paver are generated based on this information.

Abstract: The present invention relates to a device in a self-propelled construction machine with a first driving unit, which provides for a first speed of rotation (n1). By means of a planetary gear the first speed of rotation (n1) is translated into a different speed of rotation (n3) at which a working device of the construction machine, in particular a milling rotor for processing ground surfaces, can be operated.