EP3124698A1 - Road finisher with roller indication display device - Google Patents

Abstract

The invention relates to a road paver (4), comprising a screed (9) for producing a new paving layer (10) from a paving material (M) and a paver (4) provided on the paver (4) for generating a dynamic Walzvorgabefelds, based on space related thermographic signals with regard to at least one temperature image (21) present behind the screed (9) of the road finisher (4) for at least one surface section (22) of the newly installed paving layer (10). The invention is characterized by a display device (26) provided on the road finisher (4) for displaying at least partially a roll reference at least partially behind the paver (4) for compacting the newly installed paving layer (10) on an operator of at least one compaction vehicle ( 5).

Description

The present invention relates to a road finisher according to the preamble of claim 1. Further, the present invention relates to a method according to independent claim 14.

When installing new pavements, the processing temperature of asphalt is an important process variable and has a significant impact on the performance characteristics of the construction, eg. B. on the layer composite and the life of the newly installed road surface. For this reason, measuring the installation temperature is becoming increasingly important.

In practice, when installing pavement, at least one roller vehicle follows the paver to compact the pavement built in by the screed of the paver. The asphalt temperature of the newly installed road surface is an important process variable for the first entry of the roller vehicle into the newly installed road surface. For this, it is important to hit the right time for compacting, ie retracting the rolling stock into the new road surface.

On the one hand leads to a too early retraction in too hot asphalt structural defects, such as wrecking, on the other hand leads to a late retraction that the asphalt is already strongly cooled and less time for the roller compaction is available. Ideally, it is therefore important to determine exactly the right time or the right temperature for the start of rolling.

The EP 2 789 741 A1 discloses a paver with a thermography module configured to detect at least a portion of a temperature of the newly installed build-in layer behind the screed. Based on this particular functions are regulated on the paver during construction.

In addition, special roller vehicles with a pyrometer device for measuring the surface temperature of the asphalt are used today. In this case, the roller driver on the roller vehicle by means of a temperature display device is displayed, how hot the asphalt is under his roller vehicle. The roller operator takes this temperature information routinely for the rolling process ago. However, looks The roller driver in this application too early retraction in too hot asphalt only when it is already too late, ie when he retracted in too hot asphalt material.

In the DE 10 2008 058 481 A1 there is disclosed an asphalting system in which a paver is data-connected to a plurality of roll vehicles behind this. Based on a temperature data model, which is generated in particular by the paver, the trailing roll vehicles can receive navigation signals to drive at predetermined distances from each other and in particular to the leading paver on the newly manufactured road surface. In order to maintain this data networking of the vehicles incorporated in the asphalting system, these are each equipped with transmitters and receivers in order to exchange temperature and / or position data with one another. However, this presupposes that all vehicles incorporated in the asphalting system are equipped with costly transceiver units in order to allow each other to exchange data.

In reality, however, paving trains on the construction site of paver and roller vehicles, especially for cost reasons, flexibly put together, being used for the train train machines from different manufacturers, some rental machines. Therefore, in such a paving a data connectivity according to the Asphaltierungssystem the DE 10 2008 058 481 A1 hard to realize.

It is now the object of the present invention to provide a paver available, which allows simple, constructive technical means an improved roller operation. The object of the invention is also to provide a suitable method for this purpose.

The object is achieved with a paver comprising the technical features of claim 1. In addition, the object is achieved by a method according to independent claim 14. Improved developments of the invention are specified in the subclaims.

The invention relates to a construction machine, which is designed as a self-propelled paver. The paver comprises a screed for producing a new paving layer from a paving material. In addition, the road paver includes a provided on the paver means for generating a dynamic Walzvorgabefelds based on spatial thermographic signals with respect to at least one present behind the screed of the paver temperature image for at least a surface portion of the newly built pavement layer.

The rolling specification field is a surface-related temperature data model which assigns a temperature distribution recorded thereon to an area of the newly installed road surface behind the screed. The respective locations on the surface can be determined, for example, with respect to a reference coordinate system of the paver, the area allocation to the temperature image, for example, from an XYZ coordinate relationship relative to the paver, in particular to the reference coordinate system. In this case, the X coordinate could, for example, define the normal distance to the reference coordinate system of the paver as viewed in the direction of travel and the Y coordinate to define a lateral distance, viewed transversely to the direction of travel, to the reference coordinate system of the paver. The Z coordinate could represent a height / depth difference to the reference coordinate system.

According to the invention, a display device for displaying a rolling instruction for an operator of at least one compaction vehicle following the road paver is provided on the road paver. The rolling reference is based at least in part on the detected rolling default field.

In the invention, the display device is mounted in full execution directly on the paver. From the paver thus go out all navigation instructions for the following or the following compaction vehicles. An additional, associated equipment of the compaction vehicles is not necessary, so that any compaction vehicles in the built-in train can be used together with the road paver according to the invention. This facilitates the compilation of the paving train on the construction site, which can be assembled in particular by Mietverdichtungsfahrzeuge different manufacturers, without causing risks to the quality of compaction.

In the invention, therefore, the equipment of the paver per se plays the crucial role and not the special equipment of the roller vehicles for optimum compaction of the new road surface.

In the invention, the roll indication output by the display device is intended for an operator of at least one compaction vehicle. The display device of the invention is therefore not comparable to an indicator of the paver in order to display signals to the paver operator. Rather, the display device of the invention provides only an auxiliary device for the usually several meters behind the paver descending operator on the compression vehicle.

In contrast to the prior art, the rolling indications generated by the display device are visible to the following operator of the compaction vehicle, without the need for additional display devices on the compaction vehicle. The rolling indications are thus apparent only by the display device of the road paver for the trailing operator of the compaction vehicle, without having to generate a data exchange between the paver and the compaction vehicle.

Preferably, in the device for generating the rolling default field, a value specification including a maximum and / or a minimum rolling temperature is stored, wherein the device is configured to determine a minimum distance and / or a comparison from the value specification with the space-related thermographic signals for the rolling default field Maximum distance to determine which or which the compaction vehicle behind the paver is to comply. The device for generating the rolling default field is thus designed to compare actual values in the form of area-related temperature values of the surface section behind the screed with at least one setpoint, given by the maximum and / or the minimum rolling temperature, based thereon on the rolling default field, in particular one Defined minimum distance and / or maximum distance to determine. This can be relative to the paver seen the rolling default field, for example, as a rolling window between the paver and the trailing compactor map. However, the minimum distance and / or the maximum distance could also be displayed to the operator of the compaction vehicle in another way.

Because the detected temperature values on the surface section behind the screed, in particular in the direction of travel, can be inconsistent, the respective minimum and / or maximum distances of the rolling default field can change dynamically therefrom. A dynamic adaptation of the rolling default field and thus also based on the dynamic rolling indication of the display device could be present in particular during the asphalting at transitions of a bridge section.

It is particularly helpful for the operator of the following compacting vehicle if the derived minimum distance and / or the maximum distance on the display device can be displayed as a numerical value in meters and / or feet. The operator of the rolling stock can easily estimate how far he should drive behind the preceding paver, so that he drives at an optimal time with his compaction vehicle on the newly installed before him pavement layer by these distances. For this, the display device could be designed as a display, which is equipped to display the rolling instruction in meters and / or foot with a variety of LED lights. It would also be conceivable that a color of the LED lights manually and / or automatically adjustable in view of the weather and / or time of day.

Preferably, the meter and / or foot is measured for a minimum and / or maximum distance from a rear edge of the screed to the trailing compression vehicle. Since the operator of the compaction vehicle normally has a good view of the screed attached to the preceding paver, he can easily estimate the distance set measured from there, so that he can exactly keep the minimum and / or maximum distance to the screed, i. can easily steer its roller over a range between the minimum and maximum distance. This results in an optimal compression result.

According to one embodiment variant of the invention, the display device is a projection unit which is designed to project the roll reference at least in sections onto the new road surface behind the screed, ie onto a surface section between the road paver and the following compacting vehicle. This allows the operator of the compaction vehicle to read the roll indication directly in front of him on the new pavement. The newly built paving layer forms an excellent projection surface for the rolling index. Then the roll reference for the operator of the compaction vehicle clearly visible. Even rising vapors above the screed during the construction of the road paver do not disturb the projection of the rolling instructions.

In this case, it is particularly helpful if the projection unit comprises at least one laser which is designed to have at least one line oriented transversely to the direction of travel, a command, for example a meter or foot indication and / or an image of the rolling default field as a rolling reference to the newly installed paving layer to project. The line generated by the laser is particularly visible to the operator of the compaction vehicle. Preferably, the projection unit is configured to vary the color of the laser light depending on the daylight conditions, so that all rolling instructions are always easily recognizable during daytime and nighttime work. The adaptation of the laser light can be done automatically to the daylight conditions. Alternatively or additionally, an operator of the paver could manually adjust the laser light color of the projection unit. This can preferably be done on the control module of the paver.

According to a further embodiment of the invention, the display device comprises an unwinding unit with at least one winding element, wherein the unwinding unit is adapted to pull the winding element as a boom of varying length, representative of the generated Walzvorgabefeld, behind or next to the screed. The winding element could be formed, for example, as a band, which is sometimes difficult in places, just to be pulled on the newly manufactured road surface behind the screed. The unwinding length of the winding element can be determined by an electric motor of the unwinding unit, which is functionally connected to the means for generating the Walzvorgabefelds and is configured to adjust according to a winding signal of the means for generating the Walzvorgabefelds a corresponding length for the winding element behind the screed , One end of the winding element could, for example, indicate to the operator of the compaction vehicle a minimum distance that he should comply with the screed.

It would also be conceivable that two winding elements are pulled behind the screed to determine the minimum distance with one angle element and with the other the maximum distance with respect to the rolling target field, the distances to the operator of the compaction vehicle through the respective end of the two winding elements can be displayed. Thus, between the respective ends of the drawn-behind winding elements behind the screed on the surface of the new road surface imaginary the rolling window can be spanned, the operator of the compaction vehicle in this regard can align his compaction vehicle relative to the paver. The respective winding elements are preferably not more than one meter next to each other laterally arranged on the screed of the paver, so that or drive the behind the compacting vehicles not on the winding elements.

Preferably, the paver comprises a measuring device, which is designed to detect a distance to the following compaction vehicle and to take into account a comparison of the detected distance with the rolling default field in generating the rolling indication. The measuring device can be used functionally with all the described display devices. In this case, the output of the rolling instruction can be based at least partially on a distance measurement to the following compaction vehicle.

The measuring device can be designed as part of the device for generating the dynamic rolling preset field. Alternatively, the measuring device may form a separate unit on the paver, which is preferably attached to a roof structure or to the screed of the paver. For detecting the distance to the following compaction vehicle, the measuring device preferably comprises at least one distance sensor, for example an infrared, an ultrasonic and / or a laser sensor.

Preferably, the means for generating the rolling default field is configured to compare the distance actually measured to the following compacting vehicle with the target minimum and / or maximum distance and based on this comparison to generate the previously discussed or an additional rolling advice to the operator of the following compacting vehicle For example, he should accelerate his compaction vehicle. Thus, it quickly becomes clear to him whether he must reduce or increase the distance to the leading paver, so he drives at an optimal time on the newly installed road surface.

Preferably, the display device comprises a signal beacon configured to transmit at least one visual signal as a roll indication. For the operator of the compaction vehicle, the signal traffic light is particularly simple as a display device read. In particular, it can be color-coded on the signal light whether the compaction vehicle is traveling behind the paver at a proper distance. For example, could indicate by the signal lights, the display of a red light that the compression vehicle is too far away from the paver and / or moved up too close to the screed of the paver. By contrast, the display of a green signal light by the signal lights could mean that the distance between the paver and the following compaction vehicle is optimal for achieving an optimum degree of compaction of the newly installed pavement. The function of the signal traffic light is based in particular on a comparison of the measured distance to the following compaction vehicle by means of the measuring device with the determined minimum and / or maximum distance by the device for generating the rolling default field.

The display device is particularly visible to the operator of the following compacting vehicle when it is fastened to a roof structure, in particular to a rear vertical roof carrier of the road paver. It would also be conceivable that in each case a display device for the compression process is attached to both rear vertical roof beams of the paver.

The surface of the newly built road surface can have different temperature zones. Therefore, it is advantageous if the device for generating the rolling default field is configured to assign the respective temperature zones different rolling default fields. Different temperature zones could, for example, adjust over the paving width of a pull-out screed, which follow several compaction vehicles. Through the respective temperature zones the respective compaction vehicles could be displayed, at which intervals they should follow the road paver in each case to the pre-drawn screed section. It may be that the respective compaction vehicles due to the different width over the installation width temperature zones at different distances to the leading road paver compact.

According to one variant of the invention, the paver comprises a thermographic module for generating the spatial thermographic signals with regard to the temperature image present behind the screed of the paver. The thermographic module is preferably on the roof structure above the screed arranged so that it can detect an area behind the screed well with respect to the temperature values present therein.

Preferably, the thermographic module is detachably attached to the roof structure of the paver, so that it can be removed during standstill of the paver, especially over night, from this. This prevents the thermographic module from being stolen, especially if the paver remains overnight at the construction site.

Further preferably, the means for generating the dynamic Walzvorgabefelds within a housing of the thermography module is arranged, so to speak formed as an integral part with the thermography device. The housing of the thermography module offers excellent protection for the device for generating the dynamic roll control panel. Alternatively, the device for generating the dynamic rolling default field can be arranged as a separate unit on the paver, in particular in its control module.

An activation of the device for generating the dynamic default roll field can be done automatically and / or manually by an operator of the road finisher. An operation of the device for generating the dynamic default roll field can take place in an automated manner, in particular, when the operator of the road finisher sets a rolling indication mode on an operating device, for example on the operating stand of the road finisher or on a screed control stand. The operator thus has it in his own hands when he wants to generate rolling indications by means of the display device, which is functionally connected to the device for generating the rolling preset field.

Preferably, the device for generating the dynamic default roll field is also designed to take into account a cooling rate for the surface of the newly installed road surface layer during generation of the default roll field. This could be at least one point within the Walzvorgabefelds assign a favorable rolling time at which the point has an optimum rolling temperature. This can be calculated, for example, by means of an algorithm or several algorithms based on a temperature image of the surface section behind the screed and optionally additionally based on an outside temperature.

The invention also relates to a method for the installation of a paving layer by a paver, wherein at least one rolling instruction is displayed to an operator of at least one compactor following the road paver for compacting the road paver following the paver by means of a display device provided on the preceding paver. Thereby, the rolling hints can be displayed visibly by the road finisher to the operator of the following compacting vehicle, so that the latter can steer his compaction process with regard to rolling indications generated on or by the preceding road paver.

Preferably, the rolling indication is displayed based on a rolling default field which is generated for at least one surface section of the installed paving layer using space-related thermographic signals with regard to at least one temperature image present behind a paving screed of the paver. The rolling default field is present as a temperature location data model, based on which the display device provided according to the invention generates rolling signals which the operator of the following compacting vehicle can recognize without additional display devices provided on his compaction vehicle.

For producing and displaying the rolling indications, all of the above-described devices of the road finisher can be used.

Figur 1

eine Seitenansicht eines Einbauzugs zum Verbau einer neuen Straßenbelagschicht,

Figur 2

ein erfindungsgemäßer Straßenfertiger mit einer Anzeigeeinrichtung zum Anzeigen mindestens eines Walzhinweises für den Bediener eines dem Straßenfertiger folgenden Walzenfahrzeugs,

Figur 3

eine schematische Darstellung eines erfindungsgemäßen Straßenfertigers von hinten mit einer ausführungsgemäßen Anzeigeeinrichtung,

Figur 4

eine schematische Draufsicht auf einen erfindungsgemäßen Straßenfertiger sowie ein hinterherfahrendes Verdichtungsfahrzeug und

Figur 5

eine schematische Draufsicht auf einen weiteren erfindungsgemäßen Straßenfertiger und ein hinterherfahrendes Verdichtungsfahrzeug.

In the following advantageous embodiments of the invention will be described in more detail with reference to a drawing. In detail show:

FIG. 1

a side view of a paving train to build a new paving layer,

FIG. 2

a road finisher according to the invention with a display device for indicating at least one rolling instruction for the operator of a rolling vehicle following the paver,

FIG. 3

a schematic representation of a road finisher according to the invention from behind with an embodiment display device,

FIG. 4

a schematic plan view of a paver according to the invention and a trailing compression vehicle and

FIG. 5

a schematic plan view of another road paver according to the invention and a subsequent compacting vehicle.

The same components are provided throughout the figures with the same reference numerals.

FIG. 1 1 shows a paving train 1. In the paving train 1, a material delivery vehicle 2, a feeder 3, a paver 4 and a compacting vehicle 5 traveling behind the road paver 4 are arranged in series one behind the other.

The material delivery vehicle 2 pours into a receptacle 6 of the feeder 3 paving material M. the paving material M is conveyed via a conveyor 7 of the feeder 3 in a Gutbunker 8 of the paver 4.

The paver 4 comprises a screed 9, which is movably attached to the paver 4. The paving material M is transported from Gutbunker 8 of the paver 4 for screed 9. The screed 9 is configured to install the paving material M into a new paving layer 10. Depending on the temperature distribution in the paving material M and depending on which temperature the substrate U has, the paving layer 10 has a location-specific temperature behind the screed 9.

The compaction vehicle 5 following the road paver 4 is a roller vehicle 11. The roller vehicle 11 travels over the newly installed road surface layer 10 in order to compact it. According to FIG. 1 the roller vehicle 11 travels at a distance X behind the screed 9 of the paver 4. In this case, the roller vehicle 11 should not drive too close behind the screed 9 of the paver 4, because it would drive too early in the too hot, newly installed pavement 10 into it, which could possibly lead to material cracks in the pavement 10. Otherwise, the roller vehicle 11 should not travel too far behind the screed 9 of the road paver 4 because the road surface layer 10 would then cool too much before the roller vehicle 11 compacts it. This would make the roller vehicle 11 no longer reach the desired degree of compaction for the paving layer 10.

Against this background, the distance X between the screed 9 and the compaction vehicle 5 must be selected so that the above problems can be prevented.

The road paver 4 according to the invention helps the operator of the following compaction vehicle 5 to maintain the distance X to the screed 9 of the road paver 4 such that an excellent compaction of the new pavement layer 10 takes place without installation cracks with a desired degree of compaction.

The road paver 4 according to the invention is enlarged in a perspective view in FIG FIG. 2 shown.

The paver 4 points in FIG. 2 a crawler undercarriage 12. Instead of the crawler undercarriage 12, however, the road paver 3 according to the invention could also comprise a wheeled chassis. Furthermore, the road paver 4 comprises an operating stand 13 with a control console 14 designed as a control module, by means of which the operator of the paver 4 can control a multiplicity of operating functions of the paver 4.

Further, the paver 4 comprises a roof structure 15 with a roof 16 which is supported on vertical roof beams 17. On a cross-beam 18, which connects the rear vertical roof rack 17, a thermographic module 19 is attached. The thermographic module 19 has a housing 20 within which a plurality of electronic components is arranged protected. In particular, an infrared camera 21 is located inside the housing 20. By means of the infrared camera 21, a schematically represented temperature image 21 of a surface section 22 shown behind the screed 9 can be detected. The infrared camera 21 is designed to detect, depending on the type of screed used 9, a different sized surface portion 22 behind the screed 9 or a different sized temperature image 21 of the surface portion 22.

At the in FIG. 2 Screed 9 shown is a Ausziehbohle A with lateral Ausziehteilen 23. These can be used for the installation of a large width for Paving layer 10 are extended laterally. Further shows FIG. 2 in that in each case a screed operating module 24 is fastened to the respective pull-out parts 23 of the screed 9. By screed control module 24 operating functions of the screed 9 can be controlled. In particular, the screed 9 can be leveled using the screed operating modules 24 in order to produce a level paving layer 10.

Further shows FIG. 2 in a schematic representation that in the housing 20 of the thermography module 19, a device 25 for generating a dynamic Walzvorgabefelds is arranged. The means for generating a dynamic default target field 25 is configured to produce the default target based on spatial thermographic signals generated by the thermography device 19.

Further shows FIG. 2 in a schematic representation that on the vertical roof rack 17, a display device 26 is attached. However, the display device 26 may also be attached elsewhere in the roof structure or on the screed 9 of the paver 4. Similarly, the display device 26 may be mounted within the housing 20 of the thermography device 19. This will be more closely related to the FIGS. 3 to 5 explained. By the display device 26, the operator of the in FIG. 1 shown compacting vehicle 5 rolling indications are displayed.

In FIG. 3 is the road paver 4 according to the invention shown in a schematic representation from behind. In FIG. 3 the display device 26 is formed on the left roof rack 17 as a signal light 27. On the right roof rack 17, the display device 26 includes a meter and / or foot indicator 28 to indicate thereon the rolling instructions as a number.

In FIG. 3 the paver 4 comprises both the signal lights 27 and the meter and / or foot indicator 28, it being possible to provide the paver 4 with only one of these indicators 26.

According to FIG. 3 the display devices 26 are directed from the roof rack 17 inwards, so that the operator of the paver 4 when looking into a rearview mirror 29 (see FIG. 2 ) of the paver 4 has no obstructed view to the rear. It would also be conceivable to attach at least one of the display devices 26 to the crosspiece 18 of the roof structure 15.

The signal light 27 comprises a first signal light 30 and a second signal light 31. The first signal light 30 can be configured to emit a red signal light if the following behind the paver 4 compaction vehicle 5 is too small or too large a distance X behind the screed. 9 comply. This would indicate to the operator of the compaction vehicle 5 that he has to change his distance X to the towed-ahead screed 9 in order to achieve an optimal compaction result in the paving layer 10.

Optionally, the first signal light 30 could be configured to indicate a persistent red light when the compaction vehicle 5 has become too close to the screed 9, i. the distance X is too small. Then, the operator of the compaction vehicle 5 would immediately recognize that he must slow down the compaction vehicle 5 in order to move farther away from the screed 9 of the paver 4. Otherwise, the first signal light 30 could be configured to display an intermittently flashing red light to indicate to the rear-mounted compaction vehicle that it is traveling too far behind the screed 9. The operator of the compaction vehicle 5 would then have to accelerate the compaction vehicle 5, so that the distance X to the preceding paver 4 is lower.

The second signal light 31 may be configured to display a green signal light when the compaction vehicle 5 travels a desired distance X behind the screed 9 of the paver 4. The compaction vehicle X is then at such a distance from the paver 4, that it can achieve an optimal compression result.

In the FIG. 3 Meter and / or foot indicator 28 shown is divided into a first display field 28A for displaying a maximum distance 32 and a second display field 28B for displaying a minimum distance 33. In the first display field 28A, the operator of the trailing compacting vehicle 5 is shown on the basis of the maximum distance 32 how far he should maximally travel behind the screed 9 of the paver 4. Should the operator drive his compaction vehicle 5 farther than the maximum distance 32 behind the screed, then the pavement 10 would cool too much because the compaction train 5 would compress the asphalt of the pavement 10 too late. In this case, a desired degree of compaction would not be achieved.

In the second display field 28B, the operator of the compaction vehicle 5 is informed on the basis of the minimum distance 33 how close he is to drive behind the screed 9 of the paver 4. If the operator were to fall below the minimum distance 33, then he would drive the compaction vehicle 5 too close behind the screed 9, i. retract too early in the too hot road surface 10, which could lead to material cracks in the pavement.

Depending on the built-M material used and depending on the temperature of the substrate U, the information by the display devices 26 can FIG. 3 vary. The display devices 26 therefore output dynamic rolling indications to the operator of the following compacting vehicle 5.

It is also conceivable that both of the in FIG. 3 shown display devices 26, ie the signal lights 27 and the meter and / or foot 28 are connected to each other functionally. In particular, the signal traffic light 27 can be operated with regard to the determined minimum and / or maximum distance as well as with regard to the measured distance X.

Furthermore, it would be possible for the meter and / or foot display 28 to display a numerical value associated with a plus sign or with a minus sign, the operator of the compactor vehicle 5 being prompted by a plus numbered numerical value to set the distance X to the driving ahead of the road paver 4 or is prompted by an afflicted with a minus sign numbers to reduce the distance X to the preceding paver 4.

FIG. 3 further shows a measuring device 38, which is configured to measure, preferably by means of an infrared sensor 39, the distance X to the following compacting vehicle 5. Based on the measured by the measuring device 38 distance X to the trailing compression vehicle 5 and based on the maximum and / or minimum distance 32, 33, one of the display devices 26 from FIG. 3 or another embodiment display device 26 to the roller driver indicate whether he must reduce the distance X to the preceding paver 4 or increase.

FIG. 4 shows another embodiment of the paver 4 to indicate the following compacting vehicle 5 a rolling reference. In FIG. 4 the display device 26 is designed as a projection unit 34. The projection unit 34 includes a laser 45 configured to project a first laser line 35 and a second laser line 36 onto the pavement 10 between the paver 4 and the following compacting vehicle 5, based on the rolling default field of the rolling default array generating means 25. The first laser line 35 indicates the minimum distance 33 which the compaction vehicle 5 should follow behind the screed 9. Similarly, the second laser line 36 indicates the maximum distance 32, by which the compression vehicle 5 is to be maximally spaced from the screed 9 of the paver 4.

In the FIG. 4 would have the compaction train 5 catch up to the paver 4, to compact the paving layer 10 between the first and the second laser line 35, 36. As previously discussed in connection with the display devices 26 FIG. 3 has been explained, the first and second laser lines 35, 36 may also vary with regard to the cooling rate of the newly installed paving layer 10.

The operator of the compaction vehicle 5 sees, with reference to the laser lines 35, 36 projected onto the paving layer 10, whether he moves his compaction vehicle 5 at a predetermined distance behind the screed 9 of the paver 4. The first and second laser lines 35, 36 delimit on the paving layer 10 a compaction window 37 within which the compaction vehicle 5 should preferably move in order to optimally compact the paving layer 10.

FIG. 5 shows a further embodiment of the road finisher according to the invention 4. The paver 4 off FIG. 5 comprises an unwinding unit 40, which is attached laterally to the screed 9. The unwinding unit 40 pulls behind the screed 9 a first and a second winding element 41, 42 on the paving layer 10 behind. The length of the respective winding elements 41, 42 can be varied by the winding unit 40.

The end of the first winding element 41 indicates to the operator of the compaction vehicle 5 how far he may drive up to the screed 9 at most. Analogously, the end of the second winding element 42 indicates to the operator of the compaction vehicle 5 how far he should be at a maximum distance from the screed 9. Between the respective Ends of the first and second winding elements 41, 42, the compression window 37 is displayed. Depending on the unwinding length of the winding elements 41, 42, the size of the compaction window 37, within which the compaction vehicle 5 should travel, varies in order to obtain a desired degree of compaction for the paving layer 10.

In all embodiments of the invention, regardless of how it is implemented, the display 26 is mounted directly to the paver 4 and configured to visually indicate to the operator of the trailing compacting vehicle 5 rolling indications by which the operator of the compaction vehicle 5 knows how far apart he is Compression vehicle 5 to drive ahead to road paver 4, in order to achieve an optimal compression result.

Claims (15)

A paver (4) comprising a screed (9) for producing a new paving layer (10) from a paving material (M), and an on-paver device (25) for generating a dynamic rolling default field based on space-related thermographic signals with respect to at least one of the backplanes the screed (9) of the road paver (4) present temperature image (21) for at least one surface portion (22) of the newly built paving layer (10),
marked by
a display device (26) provided on the paver (4) for displaying at least one rolling reference at least partially based on the rolling default field to an operator of at least one compaction vehicle (5) behind the road paver (4) for compacting the newly installed road surface layer (10). Road paver according to claim 1, characterized in that in the means (25) for generating the Walzvorgabefelds a value specification, comprising a maximum and / or a minimum rolling temperature, deposited, wherein the means (25) is configured to, from a comparison of the value specification with the space-related thermographic signals for the rolling default field, a minimum distance (33) and / or a maximum distance (32) to determine which or which the compaction vehicle (5) behind the paver (4) is to comply. Road paver according to claim 2, characterized in that the minimum distance (33) and / or the maximum distance (32) on the display device (26) can be displayed as a rolling instruction in meter and / or foot indication. Road paver according to one of the preceding claims, characterized in that the display device (26) is a projection unit (34) which is adapted to project the rolling reference at least in sections on the new road surface (10) behind the screed (9). Paver according to claim 4, characterized in that the projection unit (34) comprises at least one laser (45) which is adapted to at least one line (35, 36) and / or an image of the rolling default field as a rolling reference to the newly built paving layer ( 10) to project. Road paver according to one of the preceding claims, characterized in that the display device (26) comprises an unwinding unit (40) with at least one winding element (41, 42), wherein the unwinding unit (40) is adapted to the winding element (41, 42) as Indicator of varying length representative of the generated Walzvorgabefeld behind or next to the screed (9) pull forth. Road paver according to one of the preceding claims, characterized in that the paver comprises a measuring device (38) which is adapted to detect a distance (X) to the following compaction vehicle and a comparison of the detected distance (X) with the Walzvorgabefeld in generating the Walzhinweises to consider. Road paver according to one of the preceding claims, characterized in that the display device (26) comprises a signal light (27) which is configured to emit a visual signal as a rolling indication. Paver according to one of the preceding claims, characterized in that the Walzvorgabefeld for different temperature images behind the screed (9) is divided into several temperature zones. Road paver according to one of the preceding claims, characterized in that the display device (26) on a roof structure (15) of the paver (4) is attached. Road paver according to one of the preceding claims, characterized in that the paver (4) comprises a thermographic module (19) for generating the geographic thermographic signals with respect to the behind the screed (9) of the paver (4) present temperature image (21). Road paver according to claim 11, characterized in that the means (25) for generating the dynamic Walzvorgabefelds within a housing (20) of the thermography module (19) is arranged. Road finisher according to one of the preceding claims, characterized in that the Walzvorgabefeld contains information to associate the at least one point within the Walzvorgabefelds a favorable rolling time at which the point has an optimum rolling temperature. Method for installing a paving layer (10) by a paver (4), wherein at least one rolling instruction to an operator of at least one behind the paver (4) for compacting the paver (4) built pavement layer (10) following compression vehicle (5) by means of an am preceding road paver (4) provided display device (26) is displayed. A method according to claim 14, characterized in that the roll indication is displayed based on a rolling default field, which uses space-related thermographic signals for at least one behind a screed (9) of the paver (4) temperature image (21) for at least one surface portion (22). the built pavement layer (10) is generated.

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