Abstract: A method for adjusting the rotational speed of an internal combustion engine of a road-building machine which, in addition to a traction drive, has hydraulic motors which are connected to the internal combustion engine and which serve for driving working assemblies, in which method the rotational speed is adjusted as a function of the present power demand of the working assemblies, characterized in that the hydraulic motors are operated using fixed-displacement pumps, and residual volume flows presently to be discharged are reduced by flow valves for hydraulic motors of active working assemblies, for which purpose the rotational speed of the internal combustion engine is automatically adapted during working operation.

Abstract: The invention relates to a road-building machine, comprising a drivable chassis (1) on which a driver's cab (3) having a control panel (2) is provided. A canopy (5) that is fixed to the chassis by at least one support (6) is arranged above the driver's cab, wherein at least one support (6) is adjustably arranged on the chassis (1) such that the canopy (5) can be lowered for a transport position and raised for a working position. For a working position with reduced set-up height, the lowered canopy (5) forms a free space (9) for an operator in the region of the control panel (2) of the driver's cab (3), wherefore a canopy section covering the control panel (2) is designed such as to be movable relative to the chassis (1).

Abstract: A road finishing machine includes a chassis supporting a driver's cab, an undercarriage, at least one drive unit, a hydraulic system, a screed, an asphalt supply arrangement comprising a storage hopper and a longitudinal conveyor conveying from the storage hopper to a transverse distributor and comprising a fumes suction system operated by a fan, comprising at least one airflow path, the exhaust line thereof comprising a suction opening above the transverse distributor and an outlet opening at a height above the driver's cab, wherein the fan is arranged in the region of the suction opening of the exhaust line of the at least one airflow path.

Abstract: The invention relates to a road paver comprising a chassis that carries a driver's cab, an undercarriage, at least one drive assembly, a hydraulic system, a cover mounted in an articulated manner, an asphalt feed arrangement comprising a storage hopper, a longitudinal conveyor device which conveys material from the storage hopper to a cross-distributor, and a steam suction system which is operated by means of a vacuum generator and comprises at least one suction flow path whose withdrawal line comprises a suction inlet above the cross-distributor and an outlet at a height above the driver's cab. At the suction inlet-side end of said withdrawal line, at least one confuser-like inlet nozzle is provided which is arranged to be secured to, and movable with, said cover, and which aspirates behind the cross-distributor in the travel direction such that accessibility in the region above the cross-distributor is not affected and the view out to the cross-distributor from the driver's cab is not obscured.

Abstract: The invention relates to a road finishing machine comprising a chassis supporting a driver's cab, an undercarriage, at least one drive unit, a hydraulic system, a screed, an asphalt supply arrangement comprising a storage hopper and a longitudinal conveyor conveying from the storage hopper to a transverse distributor and comprising a fumes suction system operated by a fan, comprising at least one airflow path (X), the exhaust line thereof comprising a suction opening above the transverse distributor and an outlet opening at a height above the driver's cab, wherein the fan is arranged in the region of the suction opening of the exhaust line of the at least one airflow path (X).

Abstract: The invention relates to a road-building machine, comprising a drivable chassis (1) on which a driver's cab (3) having a control panel (2) is provided. A canopy (5) that is fixed to the chassis by at least one support (6) is arranged above the driver's cab, wherein at least one support (6) is adjustably arranged on the chassis (1) such that the canopy (5) can be lowered for a transport position and raised for a working position. For a working position with reduced set-up height, the lowered canopy (5) forms a free space (9) for an operator in the region of the control panel (2) of the driver's cab (3), wherefore a canopy section covering the control panel (2) is designed such as to be movable relative to the chassis (1).

Abstract: The invention relates to a road finishing machine having a screed extending transverse to the working direction of the finishing machine. The machine includes a base plate that can be heated using an electrical heater clamped to the base plate. The heater has at least one bar-shaped heating element, wherein the bar-shaped heating element includes a round tube heating element having at least one heating bar fixably supported on individual bolts that can be attached to the base plate and forming heat transfer bridges.

Abstract: The invention relates to a device for compacting road paving materials, comprising a screed board which is fastened on a road finisher and extends at a right angle to the direction of travel of the road finisher and a tamper that is mounted in front and/or behind the screed board. The tamper has a tamper strip that can be driven to perform a striking upward and downward movement and the interior of which is equipped with an electrical heating unit in the form of a rod-shaped heating element that can be clamped into a recess of the tamper strip. The device according to the invention is characterized by a spring accumulator receiving a heating element in the direction of the striking upward and downward movement for clamping the heating element.

Abstract: The invention relates to a device for compacting road paving materials, comprising a screed board which is fastened on a road finisher and extends at a right angle to the direction of travel of the road finisher and a tamper that is mounted in front and/or behind the screed board. The tamper has a tamper strip that can be driven to perform a striking upward and downward movement and the interior of which is equipped with an electrical heating unit in the form of a rod-shaped heating element that can be clamped into a recess of the tamper strip. The device according to the invention is characterized by a spring accumulator receiving a heating element in the direction of the striking upward and downward movement for clamping the heating element.

Abstract: The invention relates to a paver for the paving of ground courses for roads or the like, comprising a chassis and a trailed floating screed which is articulated on the latter via tow arms and of which the angle of attack relative to the ground can be adjusted via an actuating cylinder, arranged on each of the two sides of the chassis, for displacing the tow point of the tow arms, a tow-point displacement controller for setting the tow point corresponding to an intended paving height dimension of the screed being provided for each side, characterized in that displacement sensors for measuring the displacement movements of the actuating cylinders are provided and are coupled to a control unit which evaluates the displacement signals of the tow-point displacement controllers, which control unit records the displacement movements as control values and compares them with a nominal control value range for displacement movements that can be stored in the control unit and corrects recorded control values outside the

Abstract: The invention relates to a device for compacting road paving materials, comprising a screed board which is fastened on a road finisher and extends at a right angle to the direction of travel of the road finisher and a tamper that is mounted in front and/or behind the screed board. Said tamper has a tamper strip that can be driven to perform a striking upward and downward movement and the interior of which is equipped with an electrical heating unit in the form of a rod-shaped heating element that can be clamped into a recess of the tamper strip. The device according to the invention is characterized by a spring accumulator receiving the heating element in the direction of the striking upward and downward movement for clamping the heating element.

Abstract: The invention relates to a vibratory paving screed for a paver, comprising a baseplate and a vibration drive therefor and also comprising a front wall which is mounted upstream of the baseplate in the paving direction, is fixed with respect to the baseplate and engages with the baseplate, in which arrangement the baseplate comprises a section of uniform thickness and, in the region of its front edge, a separate, solid strip which is connected to the section and has a metering slope and a flat run-in bevel situated behind.

Abstract: The invention relates to a machine for milling traffic areas. The machine has a vertically adjustable chassis which carries a steerable traveling mechanism and a drive unit for moving the machine and for driving a milling mechanism coupled to the drive unit. A laser scanner is attached to at least on one side of the chassis. With the laser scanner, the height relative to the surface of a traffic area to be milled can be measured and the chassis can be set vertically in accordance with the measured values relative to the surface of the traffic area to be milled. The laser scanner is attached in the center side-wall region of the chassis. The scanning plane of the laser scanner is essentially parallel to the side-wall region of the chassis and at a height which permits monitoring of a hazard region which extends at least over the side length of the machine. The laser scanner produces a trigger signal if a disturbance occurs in the scanning plane.

Abstract: The invention relates to a paver for the paving of ground courses for roads or the like, having a chassis and a trailed floating screed which is articulated on the latter via tow arms and of which the angle of attack relative to the ground is capable of being adjusted via actuating cylinders and which comprises a basic screed and extendable screeds and/or attached screed parts, there being arranged between the rear region, as seen in the paving direction, of the chassis and the extendable screeds and/or the attached screed parts of each side at least one hydraulic supporting cylinder which, at the moment of start-up of the paver, is subjected to an adjustable hydraulic pressure.

Abstract: The invention relates to a paving screed for a paver, with a basic screed and with at least one lateral extendable screed part which is connected to the basic screed via hydraulically actuable tensioners. The height of the extendable screed part can be adjusted via a height setting device which comprises vertical spindles which are coupled to the extendable screed part and are held on the basic screed rotatably relative to the latter. The spindles are adjustable via a common drive motor, it being possible, as a result of the actuation of the drive motor, to trigger a release of the hydraulically actuable tensioners for the duration of actuation. The extendable screed part is also connected to the basic screed via spring-biased screws.

Abstract: A road finisher has a chassis and a floating laying beam, which is located behind the chassis. The beam includes a centrally divided basic beam, and extendable beams which can extend laterally from the basic beam and can be height-adjusted, with respect to the basic beam. The basic beam and the extendable beams are arranged offset one behind the other in the direction of travel. The height adjusting devices are adjusted automatically in such a way that they keep the respective rear edges of the basic beam and of the extendable beams in the same plane. A control signal for the height adjusting devices is derived from measured values for the setting angle of the basic beam. The control signal is picked up by a sensors on the front of the tie bars for measuring the distance from a reference plane independent of the road finisher, and utilized to determine the height of the rear edge of the basic beam and of the extendable extendable beams.

Abstract: A paver and a corresponding loader each have a chassis (1) which is provided, at the front in the paving direction, with a hopper (8) for receiving material to be paved and, at the rear, with a floating screed (4), a longitudinal conveyor device (7) being provided between the hopper (8) and a distributor auger (6) located in front of the screed (4) in the paving direction, the hopper (8) being open towards the longitudinal conveyor device (7) and including two hopper halves (9) which are each pivotable about an axis (21) extending adjacently to the longitudinal conveyor device (7) in the paving direction. Further, in each of the hopper halves (9) is provided a lateral conveyor device (12) which is drivable by a drive (13), is arranged on the bottom side and extends as far as the longitudinal conveyor device (7), those bottom portions (14, 19) of the hopper halves (9) which remain with regard to the respective lateral conveyor device (12) being tiltable relative to the lateral conveyor device (12).

Abstract: A paver (1) with a chassis (2) at the front in the paving direction, with a hopper (11) for receiving material to be paved and, at the rear, with a floating screed (5), two centrally arranged longitudinal conveyor devices (9,10) guided through a shaft (8) being provided between the hopper (11) and a distributor auger (7) located in front of the screed (5) in the paving direction, the hopper (11) being open relative to the longitudinal conveyor devices (9,10) and an additional conveyor device (33) for loading a hopper (12) of a following paver (13) being provided. One of the longitudinal conveyor devices (10) extends from the rear outlet of the shaft (8), beyond the screed (5) and to the additional conveyor device (33) and has a discharge end (14) which is fixed or adjustable to an appropriate height for loading the hopper (12). The longitudinal conveyor devices (9,10) are partitioned off from each other by a vertical separating plate (20).

Abstract: A paver screed has a main screed with two outer side walls, at least one of the side walls being provided with insertion orifices for the releasable mounting of at least one lateral screed extension by means of fastening elements capable of being inserted through the insertion orifices. A screed extension has fastening elements that comprise hydraulic cylinders which each have a piston that is spring-biased into an initial, retracted position. The cylinders are actuated by hydraulic fluid to displace or extend the piston against the biasing action of the spring. Preferably, the hydraulic cylinders are connected a hydraulic circuit of the main screed. The piston of each hydraulic cylinder carries a shank capable of being inserted through a proximal insertion orifice and which are preferably provided with an abutment element configured for attaching the cylinder to the sidewall of the main screed.

Abstract: A screed for a paver has a baseplate and at least one tamper bar arranged in front of the baseplate. The tamper bar extends transversely to the paving direction and is movable in upward and downward directions by means of an eccentric drive and is capable of being electrically heated. At least one coil is provided, which is arranged so as to be adjacent to the tamper bar and to which a high-frequency current may be applied by means of an electrical current source. The current flowing through the coil induces eddy currents in the tamper bar such that the tamper bar becomes heated.