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 ground milling machine, particularly a road milling machine, comprising a machine frame supported by travelling devices, a drive engine and a milling device arranged in a milling drum box, the milling drum box comprising a stripping plate which is height-adjustable by means of at least a first and a second actuator. Further, the present invention relates to a method for adjusting a stripping plate of a milling drum box of a ground milling machine, particularly a road milling machine. For the purpose of a reliable adjustment of the stripping plate, the present invention proposes using a monitoring device for detecting the adjustment of a first actuator and a control device for controlling the adjustment of a second actuator depending on the adjustment of the first actuator.

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.

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: The present invention relates to a construction machine, in particular a ground milling machine, comprising transportation means connected to the machine frame via lifting columns. The lift adjustment of the lifting columns occurs as a function of the determined weight force values respectively applied to at least one actuator of a pair of front and/or rear and/or right and/or left transportation means. The present invention further relates to a method of optimum and practical weight distribution of the machine weight to the transportation devices for such a construction machine.

Abstract: The present invention relates to a method for operating a hydraulic system of a self-propelled road paver, in particular, for the supply of hydraulic oil as needed to a closed hydraulic circuit of the road paver, a hydraulic system of a road paver for performing the method and a road paver having such a hydraulic system. The extraction and/or return of the quantity of hydraulic oil occur depending on at least one operating parameter of the road paver.

Abstract: The present invention relates to a ground milling machine, in particular, a road cold milling machine, having a replaceable milling drum unit. To make this replacement procedure easier, the present invention proposes a fastening device between the milling part and the machine part of the ground milling machine. The present invention furthermore relates to a method for replacing a milling part on the ground milling machine, a fastening device being used for this purpose.

Abstract: The present invention relates to a method for controlling a construction machine which performs a working operation along a working trajectory on a ground depending on at least one operating parameter. A method according to the present invention comprises placing at least one mark, detectable by a sensor device, stationary on the ground in a region which, regarded from at least one position of the construction machine on the working trajectory, is located in the detection region of the sensor device. The mark is detected by the sensor device, resulting in the generation of sensor data which is processed by the data processing device of the construction machine. A control command is generated for the machine control of the construction machine for changing at least one operating parameter of the construction machine.