Abstract:
In a paving screed E for a road paver F, the paving screed E comprises a base screed G and extension screeds A at the front side of the base screed, the extension screeds A being extendable and retractable and pivotable relative to the base screed G, a base guiding structure 18 pivotable relative to the base screed G, a guiding sub-structure 17 slidably guided in the base guiding structure 16, an extension guiding structure 16 slidably guided in the guiding sub-structure 17, and a sole plate frame structure 14 mounted to the extension guiding structure 16 and carrying an extension screed sole plate 11, substantially vertical guidances 20 and elevation adjustment assemblies 21 between the sole plate frame structure 14 and the extension guiding structure 16, the vertical guidances 20 and the elevation adjustment assemblies 21 facilitating to adjust the elevation of the sole plate frame structure 14 and the extension screed sole plate 11 parallel to itself and relative to the extension guiding structure 16.
Abstract:
In a road finisher having a spraying assembly for a bitumen emulsion, the spraying assembly has a plurality of spraying modules and one of the spraying modules has at least one pivotable spraying ramp at each side in the area of the carriage of the road finisher.
Abstract:
A device (1) for supervising the function of an electric consumer (2), such as a heating unit in a road finisher, is connected in a supply circuit (3) of electrical current of a consumer, and has an induction coil (4) associated with the current supply to which is connected a circuit (6) for detecting and indicating a voltage induced in the coil (4) by the supply current.
Abstract:
An electric heating unit for a road finisher for heating work components having at least one heating rod (1, 10) with a predetermined nominal heating power. In order to increase the reliability of operation of the heating unit and in order to facilitate heating unit repairs that have become necessary in view of a faulty heating rod (1, 10), each heating rod (1, 10) is provided with at least two heating spirals (3, 4; 12, 13, 14) each provided with an electric lead (6, 7; 16, 17, 18) of its own, both of the leads being connected to a user-accessible connection means (8).
Abstract:
A method for controlling and regulating a dryer in a rotary printing press having a varnishing device for varnishing printing stock processed in the printing press, includes measuring the intensity of a microwave signal after the microwave signal has interacted with varnished and dried printing stock fed through the rotary printing press; from the measured radiation intensity of the microwave signal, forming a status variable representing a measure of the degree of drying of the printing stock; and varying drying power provided by the dryer as a function of the formed status variable; and a device for performing the method.
Abstract:
A belt conveyor for a road-finishing machine or a charger. The belt conveyor includes a conveyor belt in which a displaceably mounted support element abuts the conveyor belt, and a first and a second piston cylinder unit operate to displace the support element. The first and the second hydraulic piston cylinder units can be pressurised independently of each other in order to move the support element into a desired inclined position. If the conveyor belt of the belt conveyor runs laterally away from the support element, the out-of-true running of the conveyor belt can be counteracted by an inclined position of the support element which moves the conveyor belt back into its original position.
Abstract:
A pushing device that can be attached to a road paver or feeder vehicle. The pushing device is attachable to a chassis component of the road paver or the feeder vehicle and comprises a pushing unit that is attached in a movable manner to the chassis component by means of at least a spring-absorber unit. The pushing unit can be displaced relative to the chassis component in a first direction and a second direction, whereby the spring-absorber unit has a greater spring rate during a movement of the pushing unit in the first direction than in the second direction.
Abstract:
A method and a system for applying a road surface using a mixing plant for producing laying material, a road finishing machine processing the laying material to a road surface, and a supply chain transporting the laying material from the mixing plant to the road finishing machine. Request commands are transmitted from the road finishing machine to the mixing plant and/or to the supply chain, and, depending on these request commands, the production rate of the laying material in the mixing plant, the temperature of the laying material produced in the mixing plant, and/or the mass flow of laying material supplied to the road finishing machine per time unit by means of the supply chain are adjusted.
Abstract:
Method for laying down a pavement with a road paver, in which machine parameters are coordinated at least with paving requirements of the pavement by means of a controller and in which at least one machine parameter set is created and stored in advance for a paving requirement determined before the paving, the parameter set allowing a high level of machine efficiency and pavement quality to be expected and/or has already produced the same for an at least similar earlier paving requirement of an already laid down pavement, and the pavement on the basis of the parameter set created in advance. The road paver has a controller with an on-board computer connected to a sensor system and an actuating system, and includes memories and a retrieval and/or comparison section for triggering the actuating system for implementing the machine parameters of the parameter set created in advance.
Abstract:
In a screed with a basic screed and at least one extendable screed movable relative to the basic screed with a hydraulic cylinder and an electro-hydraulic control comprising a magnet-actuated directional control valve for at least controlling the direction of the hydraulic cylinder, the directional control valve for changing the rate of motion of the hydraulic cylinder is guided by an operator or automatically and is a proportional directional control valve (W) with proportional-electric direct actuation or proportional-electric-hydraulic pilot control. The proportional directional control valve for the hydraulic cylinder is connected on the actuation side with an electro-hydraulic control of a hydraulic system of the road finishing machine.