Abstract: The disclosure relates to a conveyor screw for a material conveyor system of a construction machine. The conveyor screw comprises a conveyor section which is configured to convey bulk material, and a driving section which is designed to receive a driving torque or a driving force and to transmit it to the conveyor section. The disclosure is characterized in that the conveyor section and the driving section are connected to each other by friction welding.

Abstract: A construction machine according to the disclosure includes a tank for receiving an additive provided for the treatment of exhaust gases of the construction machine, and the additive has a decomposition temperature. The construction machine furthermore comprises at least one connecting line which is configured to conduct the additive away from the tank and/or to the tank. A withdrawal unit is connected to the at least one connecting line and is configured to transport the additive from the tank to the at least one connecting line and/or from the at least one connecting line into the tank. The construction machine further comprises a heat management system configured to influence temperature of the additive in the tank such that it does not exceed the decomposition temperature of the additive.

Abstract: A chassis for a road making machine comprises at least one first longitudinal beam which extends at least in sections laterally along an engine compartment of the road making machine. The longitudinal beam comprises a step which divides the longitudinal beam into an external longitudinal beam section and an internal longitudinal beam section. The internal longitudinal beam section forms a receiving area by the step in which a first cover element can be received.

Abstract: A road finishing machine includes a control panel that can be selectively swiveled about a first swivel axis and a second swivel axis, where one operational control each is provided for the first and the second swivel axes for separately unlocking and/or locking a swiveling capacity around the respective swivel axis. One counter surface is fixed to the control panel for each of the operational controls. The swivel axes can be unlocked by pulling the respective operational control in the direction of the respective counter surface, and the control panel can be swiveled into the same direction.

Abstract: A construction machine includes a sensor unit having a measurement range. The sensor unit is variable in its orientation relative to the construction machine, whereby position or orientation of the measurement range relative to the construction machine is also variable. The sensor unit is configured for detecting position of an external reference. The construction machine further includes a setup assistance system including a display configured to indicate to an operator while the sensor unit is oriented relative to the reference in which direction the sensor unit has to be moved in order for the reference to be located in the measurement range. The sensor unit is configured to detect a position of the reference relative to the sensor unit in at least two dimensions, and the display is configured to display the position of the reference relative to the measurement range for the at least two detected dimensions simultaneously.

Abstract: A transverse spreading arrangement for a road finishing machine includes spreading screws that work in opposite directions, a screw suspension that holds both spreading screws, and two screw bearing brackets that are each allocated to an outer end of a spreading screw. Each screw bearing bracket comprises a closed tube which is at least partially made of wear-resistant steel.

Abstract: A construction machine according to the disclosure comprises a primary drive configured to generate waste heat and one or a plurality of machine components, the machine components being arranged in the area of the primary drive of the construction machine. At least one of the machine components is arranged in a housing including at least one flow passage through which ambient air is sucked using underpressure or which can have ambient air supplied thereto using overpressure so that an air current is created.

Abstract: A construction machine according to the disclosure comprises a material hopper for receiving bulk material. Moreover, the construction machine includes a material conveying system for conveying bulk material. The material conveying system comprises at least one conveying screw in the area of the hopper. A gap extends underneath the at least one conveying screw, and the gap has a cross section that varies in a conveying direction of the at least one conveying screw.

Abstract: A construction machine includes at least one sensor unit which can assume different measuring states and at least one operating device spatially separated therefrom, with which a measuring state of the sensor unit is controllable. Additional controls are arranged at the at least one sensor unit, and the measuring state of the at least one sensor unit is controllable by both the at least one operating device as well as by the controls at the at least one sensor unit. A method for controlling at least one sensor unit, which can assume different measuring states, on a construction machine is also provided. The method includes controlling the measuring state of the at least one sensor unit both by at least one operating device spatially separated from the at least one sensor unit, and by controls attached to the at least one sensor unit itself.

Abstract: A measuring system for a road construction machine includes a control unit which is operationally connected using a field bus to at least one field device, wherein an exclusive bus address is respectively assignable in the measuring system for each field device connected in the field bus. Furthermore, a method for addressing at least one field device is also provided.

Abstract: A road paver F having a primary driving aggregate P with a combustion engine M, particularly a diesel engine, the crankshaft 22 of which extends to a power output region within a casing 20 of a clutch and/or a flywheel. A generator R is driven by the primary driving aggregate P at least for supplying electric heating devices H of the road paver F with electric power. A distribution gear mechanism 30 for pumps is mounted to the primary driving aggregate P. The generator R being a generator with permanent magnet excitation is mounted to or into or in lieu of the casing 20. A drive train 29 connected or connectable to the power output region of the crankshaft 22 extends to the distribution gear mechanism 30 for pumps and through the generator R.

Abstract: A driver roof for a control platform of a road making machine comprises a first roof module and a second roof module which are connected to each other permanently or detachably for forming a common driver roof.

Abstract: A self propelled building machine includes a drive, a cover covering the drive, a control platform and a material hopper which includes a filling hole and that can be filled with material by an external supply unit. The building machine is further provided with a signaling device for signaling material filling parameters to the external supply unit. In addition, the building machine comprises at least one external mirror, wherein the at least one external mirror and the signaling device are attached to the building machine by means of a common holder.

Abstract: An external control stand for controlling at least one working component of an self-propelled construction machine comprises at least one display panel and a plurality of input elements, the external control stand comprising at least one mounting section to mount it to the construction machine. The external control stand is characterized in that it comprises a lower shell, an upper shell, and an impact protection, the impact protection being configured to be in contact with the lower shell and the upper shell.

Abstract: In the hydrostatic working operation of a road finishing machine or a feeder which comprises a primary power plant with an internal combustion engine (M) and several hydraulic variable displacement pumps, which are hydraulically connected to hydraulic motors of working components, and which possesses a computerized control device, the internal combustion engine is operated within its engine-specific characteristic map in response to the load condition by dynamic speed adaptation in a characteristic zone with optimal consumption, and the displacements (VsHP) of the variable displacement pumps are simultaneously automatically adapted for keeping the volume flow rates for the hydraulic motors constant.

Abstract: A tamper of a screed having an eccentric shaft including an eccentric section and an eccentric bushing rotatably mounted in a connecting rod driving a tamper bar. The stroke of the tamper bar is adjustable by a relative rotation between the eccentric shaft and the eccentric bushing, and a tappet and a preselection area with two tappet stop positions defining two different tamper bar strokes are provided between the eccentric shaft and the eccentric bushing, enabling adjustment of the tappet to each tappet stop position, by reversing the direction of rotation of the eccentric shaft to switch between the two strokes.

Abstract: In a tracklaying gear with a frame having an idler wheel linear guide in which at least one guide piece holding the idler wheel axle is movable, and on which a tensioning means of a tensioning device supported in the frame can act in the guidance direction, at least one mechanically guided and centered elastomer spring body is installed to bulge under axial compression, such that the spring body can be readjusted, the elastomer spring body consisting of an elastomer material largely incompressible as a spring.