Abstract:
A road finisher (1) and a mobile supply unit (4) are described, between which a feed conveyor (7) with a discharge end (7a) is provided. Road finisher (1) and supply unit (4) are movable independently of each other in travel direction (F), and their relative positions with respect to each other can be detected by a sensor means (8, 18). To automate such a system as much as possible and to make it useable under all paving situations, it is suggested that the sensor means (8, 18) should include a position sensor (9) which has assigned thereto at least two mutually spaced-apart reference elements (10) for determining the position of the discharge end (7a) in, and transversely to, the direction of travel (F).
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 system for controlling construction site vehicles has a plurality of construction site vehicles and a control room. Data can be transmitted on communication channels between the control room and the construction site vehicles. In the control room, at least one digital map is stored in which at least one additional piece of information is stored for individual road sections, in addition to the route of the respective road section. A navigation module is provided and designed to generate, with reference to the at least one digital map, navigation recommendations for the construction site vehicles.
Abstract:
In a method for laying down a pavement consisting of paving material with a screed of a road paver, in which a compaction unit, particularly a tamper, pre-compacts the paving material at cyclical work cycles with selectable stroke and selectable frequency while the pavement having a selectable pavement thickness) is in the process of being laid down at a selectable paving speed, at least the stroke is automatically adjustable in response to paving parameters, such as at least the paving speed and/or the pavement thickness, along a characteristic curve or in a characteristic map. In the screed the compaction unit comprises an adjusting mechanism which is operable during the ongoing paving work for adjusting the stroke of the compaction unit.
Abstract:
A paving screed comprises a base screed and extension screeds each of which is support via an extension guiding structure at a guidance fixed in the base screed such that each extension screed can be extended and retracted. A multiple point suspension is provided between the extension guiding structure and the guidance. A frame carrying the sole plate of the extension screed A is arranged below the extension guiding structure. Substantially vertical adjustment assemblies make it possible to adjust the height position of the frame via drives. A lateral inclination adjustment assembly is provided structurally separated from the adjustment assemblies either for the frame or within the frame for the sole plate of the extension screed.
Abstract:
According to a method for laying a paving mat with a paving screed, the paving mat comprising a lane and a downwardly inclined slope beginning at a transition to the outside, the paving screed comprising a base screed and at least one extension screed which is extendable and retractable by a sliding motion in a sliding direction parallel to the base screed for varying the working width of the paving screed, the base screed and the extension screed having sole plates at the lower sides, with the sole plate of the extension screed being inclined laterally for forming the slope with the angle of the slope, a lateral position of the transition is first set relative to the base screed, during or after setting the lateral position a height difference is measured perpendicular to the planum between a fixed measuring location at the base screed and a location along a reference line extending parallel to the sole plate of the extension screed, the measured height difference being converted into a target value, and in the case of a variation of the working width and/or of the angle an occurring deviation of the height difference from the target value as caused by the variation is measured and automatically is corrected by a simultaneous height adaptation of the sole plate of the extension to the target value in order to maintain the set lateral position of the transition stationary.
Abstract:
A road finisher has a terminal box from which an electric supply circuit originates to supply electric current to at least one electric heating element for heating work components. A device for supervising the function of the at least one electric heating element includes an induction coil at the terminal box to sense current in the supply circuit and an indicator circuit, preferably of a light emitting diode, is connected to the induction coil for detecting and indicating a voltage induced in the induction coil by the current flowing in the supply circuit of a heating element. In a preferred embodiment, a cable gland is attached to the control box through which a current supply wire of the electric supply circuit passes, and an induction coil is located in the cable gland to sense the current in the supply wire.
Abstract:
A control panel K for the control device of a construction machine, particularly of a road paver or a feeder, comprises in an operation console housing 1, 1′ at least one group consisting of different electronic command signalling devices 5 to 11 which are separated among replaceably provided logic service units E1 to E8.
Abstract:
A method of laying a finishing layer with a road finisher F having a screed B, whereby the screed, equipped with a tamper device T and a smoothing plate, at least compacts and superficially smoothes the finishing layer, and the stroke and/or the frequency of the tamper device T are remotely varied for laying a finishing layer with a paving thickness and/or laying rate V which vary over the pave width and transversely to the working direction R within the pave width. A road finisher having a screed suitable for implementing the method set forth above wherein the road finisher or screed has an adjustment device for the remotely actuated local variation of at least the stroke of the tamper device within the pave width.
Abstract:
A system for controlling construction site vehicles has a plurality of construction site vehicles and a control room. Data can be transmitted on communication channels between the control room and the construction site vehicles. In the control room, at least one digital map is stored in which at least one additional piece of information is stored for individual road sections, in addition to the route of the respective road section. A navigation module is provided and designed to generate, with reference to the at least one digital map, navigation recommendations for the construction site vehicles.