METHOD OF PAVING A ROAD SURFACE AND ASPHALTING SYSTEM

Abstract

A method of paving a road surface by a road paver and a compactor, comprising the following method steps: paving a road surface by means of a paving screed of the road paver, defining a target rolling field by means of an electronic data processing system, determining a relative position of the compactor in relation to the target rolling field, generating a vibration of a main driving switch of the compactor, depending on the relative position to the target rolling field.

Claims

1. A method of paving a road surface by a road paver and a compactor, the method comprising: paving a road surface by means of a paving screed of the road paver, defining a target rolling field by means of an electronic data processing system, determining a relative position of the compactor in relation to the target rolling field, and generating a vibration of a main driving switch of the compactor, depending on the relative position of the compactor to the target rolling field.

2. The method according to claim 1, wherein a speed and/or a compression power of the compressor is determined, and a vibration of the main driving switch of the compressor is generated in dependence on the determined speed and/or the determined compression power.

3. The method according to claim 1, wherein the determination of the relative position of the compactor is performed by detecting a GNSS signal and/or by determining a distance of the compactor to the road paver.

4. The method according to claim 1, wherein the target rolling field is defined by means of an electronic data processing system on the road paver or an external electronic data processing system and is transmitted to the compactor.

5. The method according to claim 1, wherein in that the target rolling field is determined on the basis of a temperature image of the paved road surface determined by one or a plurality of sensors and/or a temperature image generated by means of simulation calculation.

6. The method according to claim 5, wherein the measured or calculated temperature image is compared with stored temperature data to determine the target rolling field.

7. The method according to claim 1, wherein the temperature of the paving material is measured by means of a sensor before the paving material is paved by the paving screed of the road paver.

8. The method according to claim 1, wherein data representing the target rolling field are periodically updated on the compressor.

9. The method according to claim 1, wherein the vibration of the main driving switch comprises several vibration patterns and/or intensities which are generated depending on the relative position of the compactor to the target rolling field.

10. The method according to claim 1, wherein optical information on the position of the compressor and/or on a remaining rolling distance and/or on a rolling distance already covered is displayed by means of a display arranged on the compressor.

11. The method according to claim 1, wherein one or a plurality of operating states of the compressor are automatically controlled as a function of the relative position of the compressor to the target rolling field.

12. The method according to claim 1, wherein a drive speed of the compressor is automatically controlled as a function of the relative position of the compressor to the target rolling field.

13. An asphalt paving system comprising a road paver and a compactor, the road paver comprising a paving screed configured to pave a road surface, the road paver further comprising a temperature sensor configured to measure a temperature of the paved road surface and an electronic data processing system configured to determine a target rolling field, and a transmitter configured to transmit the data of the target rolling field to the compactor, the compactor comprising a receiver for receiving the data and a main driving switch, wherein the main driving switch of the compactor comprises a vibration unit configured to be driven based on the data of the target rolling field.

14. The asphalt paving system according to claim 13, wherein the compactor comprises an electronic data processing system configured to process the data of the target rolling field and to send control signals to the vibration unit of the main driving switch.

15. A main driving switch for a construction machine, the main driving switch comprising an operating lever, a base housing and a vibration unit configured to vibrate the operating lever in a targeted manner.

16. The main driving switch of claim 15, wherein the construction machine comprises a compressor.

17. A compactor for compressing a road surface, the compactor comprising an electronic data processing system, an operator station, and the main driving switch of claim 15, wherein the main driving switch is configured to vibrate in response to signals received from the data processing system.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In the following, the embodiments of a method of paving a road surface by a road paver and a compactor are described in more detail with reference to the figures.

[0031] FIG. 1 shows a schematic representation of an asphalt paving system with road paver and compactor;

[0032] FIG. 2 shows a lateral schematic representation of an asphalting system;

[0033] FIG. 3 shows a lateral schematic representation of a main driving switch; and

[0034] FIG. 4 shows a schematic representation of a temperature image of a road surface.

[0035] Corresponding components are marked with the same reference numerals in the figures.

DETAILED DESCRIPTION

[0036] FIG. 1 shows a schematic representation of an asphalt paving system 1 with a road paver 3 and a compactor 5. The road paver 3 comprises a paving screed 7, which is used to pave a road surface 9 on a subgrade 11. A temperature sensor 13, which measures the temperature of the freshly paved road surface 9, is arranged on the paving screed 7 or at another location of the road paver 3, such as at a rear side of a roof of an operator station. Based on the measured temperature values, and additionally or alternatively by simulation calculation, a target rolling field 15 is calculated. By detecting a GNSS signal or by determining a distance of the compactor 5 to the road paver 3, a relative position of the compactor 5 with respect to the target rolling field 15 is determined. For example, a front center M of the compactor 5 can serve as a reference point, and the dimensions of the compactor 5 can be taken into account. For example, a direct connecting straight line A1 from a front center point M of the compactor 5 to a reference point R of the road paver 3, which is also centrally located, for example, can be defined as the distance of the compactor 5 from the road paver 3. Likewise, it would be possible to define a connecting straight line A2 parallel to the direction of travel F to the road paver 3 as a distance. The output of the vibration signals to a main driving switch of the compactor 5 can take place as a function of the position of the compactor 5 in relation to a rear edge K1 and/or a front edge K2 and/or a right edge K3 and/or a left edge K4 of the target rolling field 15. The lateral edges K3, K4 can be relevant in particular for hot-on-hot paving by two road pavers 3 next to each other. Likewise, it may already be sufficient to pay attention only to the front edge K2 as an element triggering a vibration signal in order to prevent driving into the still too hot part of the road surface 9 between the paving screed 7 and the target rolling field 15. Based on the position of the compactor 5, a rolling distance W1 already covered and a remaining rolling distance W2 can be determined.

[0037] FIG. 2 shows a lateral schematic representation of an asphalting system 1 comprising the road paver 3 and the compactor 5 in the form of a roller compactor. The road paver 3 is equipped with an electronic data processing system 17 and a transmitter 19 to process and exchange data with the compactor 5. For this purpose, the compactor 5 has a receiver 21 and an electronic data processing system 23. The transmitter 19 can thereby also be a receiver and the receiver 21 can thereby also be a transmitter in order to exchange data in both directions. The receiver 21 of the compressor 5 can simultaneously serve to receive a GNSS signal for position determination. However, there may also be an extra receiver for this purpose. A main driving switch 25, arranged on an operator station 26 of the compressor 5, is used for movement control and can control forward, reverse and lateral movement in the manner of a joystick, for example.

[0038] In addition to the temperature sensor 13, which measures the temperature of the paved road layer 9, in at least the illustrated embodiment, another sensor 27 is attached to the paving screed 7, which measures the temperature of the still unpaved paving material 29. The calculation of the target rolling field 15 can also be carried out by means of an external electronic data processing system 31. This data processing system 31 can be appropriately integrated into the data communication between the road paver 3 and the compactor 5 or replace a direct communication between the road paver 3 and the compactor 5. A display 32 can be provided on the compactor 5, in particular at the operator station 26, which gives information on the target rolling field 15 or the position of the compactor 5 and/or on a rolling distance W1 already covered and a remaining rolling distance W2, or other useful information.

[0039] FIG. 3 shows a lateral schematic representation of a main driving switch 25 comprising a control lever 33 and a base housing 35. In the partial sectional view, the vibration unit 37 can be seen, which is configured to cause the main driving switch 25 or the control lever 33 to vibrate perceptibly. For this purpose, the vibration unit 37 is controlled by the electronic data processing system 23 of the compressor 5. The vibration unit 37 may already be present as an integral component when the main driving switch 25 is manufactured, but it may also be configured as a retrofit version and be suitable for subsequent attachment.

[0040] FIG. 4 shows a schematic representation of a temperature image 39 of a road surface 9. The temperature image 39 represents the temperature distribution of the road surface 9, for which purpose temperature lines 41 are shown here, which indicate lines of equal temperature, similar to a height profile. In particular, such a temperature image 39 can also mark areas of equal temperature with a uniform color in each case, as is known from the representation by means of a thermal imaging camera, although reference should be made here to the data basis and the representation is only relevant when it is displayed, for example on the display 32 of the compressor 5. The temperature image 39 can be generated by the sensor 13 of the road paver 3, e.g., an infrared camera. Equally, however, only individual points along a line parallel to the direction of travel F can be detected and recorded, with temperature differences in the transverse direction perpendicular thereto being neglected, so that the temperature of the road surface 9 is essentially characterized by temperature lines orthogonal to the direction of travel F and parallel to one another.

[0041] Based on the above embodiments of the disclosure, many variations are possible. For example, all relevant calculations and data processing steps may be performed by the data processing system 17 of the road paver 3, the data processing system 23 of the compactor 5, or the external data processing system 31. The updating of the data can be limited to the data that can be expected to change, for example, excluding the lateral edges K3 and K4 of the target rolling field 15 or updating them at a lower frequency. All sensors, in particular the temperature sensors 13, 27, can be arranged on the construction machines 3, 5, but can also be present externally, for example in the form of a mobile thermal imaging camera or a laser measuring device, which for this purpose can be set up on tripods next to the road surface 9 and equipped with GNSS receivers.