ROAD PAVER WITH A PROJECTOR

Abstract

The disclosure refers to a road paver fur producing a paving layer, comprising a chassis and height-adjustably mounted paving screed for compacting a paving material, wherein the paving screed has at least one external control station with a control device comprising at least one control device for setting process parameters and at least one display for displaying process parameters. The road paver further comprises a projector which is adapted to project at least one of the process parameters set on the operating panel and/or displayed on the display onto at least one projection area so that the projected process parameter is visible, in particular for an operator of the paving screed. The disclosure also refers to a method for projecting a process parameter by means of a projector of a road paver.

Claims

1. A road paver for producing a paving layer, comprising: a chassis; a paving screed mounted in a height-adjustable manner for compacting a paving material, the paving screed having an external control station with a control device which has an operating panel for setting process parameters of the paving screed and/or a display for displaying process parameters set on the paving screed; and a projector configured to project at least one of the process parameters set on the operating panel and/or shown on the display onto a projection area so that the at least one process parameter projected thereon is visible to a screed operator of the paving screed.

2. The road paver according to claim 1, wherein the projection area is formable by a paving layer producible by the road paver.

3. The road paver according to claim 1, wherein the projection area is formed on the road paver.

4. The road paver according to claim 1, wherein the paving screed forms the projection area for imaging the at least one process parameter.

5. The road paver according to claim 4, wherein the paving screed comprises a base screed body and laterally extendable extending units attached thereto for varying a pave width, and wherein the projection area is provided on an upper cover of the base screed body.

6. The road paver according to claim 1, wherein the projector is configured to automatically displace a position of the projection area in dependence on a detected position of the screed operator relative to the external control station.

7. The road paver according to claim 1, further comprising a layer thickness measuring device for determining a layer thickness of the paving layer producible by the road paver, wherein the projector is attached to the layer thickness measuring device.

8. The road paver according to claim 1, further comprising a roof structure including an operator protective roof and a load carrying spar, wherein the projector is fixed to the load carrying spar or is provided on the operator protective roof as an integral part of a thermal imaging camera mounted thereon.

9. The road paver according to claim 1, wherein the control device of the external control station comprises the projector.

10. The road paver according to claim 1, wherein the projector is controllable by means of the control device of the external control station.

11. The road paver according to claim 1, wherein the control device comprises a voice control module by means of which operation of the projector can be controlled.

12. The road paver according to claim 1, wherein the paving screed comprises a detection unit, and the projector is configured to display process parameters of the paving screed detectable by means of the detection unit during operation of the paving screed on the projection area.

13. The road paver according to claim 12, wherein the process parameters of the paving screed detectable by means of the detection unit comprise a pave thickness, pave width and/or temperature.

14. The road paver according to claim 1, wherein the at least one process parameter comprises at least one set and/or detected compaction unit setting of the paving screed.

15. A method of operating a road paver including a paving screed, the method comprising: projecting at least one process parameter, which is set and/or displayable at an external control station of the paving screed, onto a projection area by a projector provided on the road paver.

16. The method according to claim 15, wherein the projection area is formed on the road paver and/or by a paving layer produced by the road paver.

17. The method according to claim 15, wherein the paving screed comprises a base screed body and laterally extendable extending units attached thereto for varying a pave width, and wherein the projection area is provided on an upper cover of the base screed body.

18. The method according to claim 15 further comprising automatically displacing a position of the projection area in dependence on a detected position of a screed operator relative to the external control station.

19. The method according to claim 15 further comprising determining a layer thickness of a paving layer produced by the road paver using a layer thickness measuring device of the road paver, wherein the projector is attached to the layer thickness measuring device.

20. The method according to claim 15 further comprising detecting, by a detection unit of the paving screed, process parameters of the paving screed during operation of the paving screed, and projecting, by the projector, the process parameters detected by the detection unit onto the projection area.

Description

[0030] In the following, advantageous embodiments of the disclosure are explained in more detail by means of drawings:

[0031] FIG. 1 shows a perspective view of a road paver according to the disclosure;

[0032] FIG. 2 shows a control device of a paving screed external control station;

[0033] FIG. 3 shows projection areas on the road paver and on the paving layer to reproduce the projected process parameter;

[0034] FIG. 4 shows a paving screed with a base screed body and extending units that can be extended to the sides;

[0035] FIG. 5 shows a paving screed with a base screed body, laterally extendable extending units and add-on parts attached to them; and

[0036] FIG. 6 shows a road paver with a layer thickness measuring device and a projector attached to it.

[0037] Identical components are consistently marked with identical reference numerals in the Figures.

DETAILED DESCRIPTION

[0038] FIG. 1 shows a road paver 1 for producing a paving layer B. The road paver 1 comprises a chassis 2 and a paving screed 3, mounted for height adjustment and towed in direction of travel R, for compacting a paving material E, which is supplied to the paving screed 3 from a hopper 4 of the road paver 1. In addition, the road paver 1 is equipped with a roof structure 5 with an operator protecting roof 6, which is supported at the rear by a left and a right-hand load carrying spar 21a, 21b, viewed in direction of travel R.

[0039] FIG. 1 shows a projector 7 attached to the operator protecting roof 6. Here, the projector 7 is an integral part of a thermal imaging camera K, which is adapted to detect a thermal image of the newly paved paving layer B. The paving screed 3 comprises lateral external control stations 8, 8′ for screed operators. The respective external control stations 8, 8′ have a control device 9, 9′ formed for inputting and displaying process parameters of the paving screed 3. The respective control devices 9, 9′ are attached to laterally extendable extending units 10, 10′ of the paving screed 3, so that they are always accessible to the operating personnel at the side of the produced paving layer B.

[0040] FIG. 2 shows an enlarged view of control device 9 of the external control station 8 from FIG. 1. The control device 9′ of the opposite external control station 8′ can be formed accordingly.

[0041] In FIG. 2, the control device 9 comprises an operating panel 11 for setting process parameters P, and a display 12 for displaying process parameters P. Display 12 enables the screed operator to display both set process parameters P and process parameters P′ detected during the paving travel on the job site, so that the screed operator can monitor the production process of the new paving layer B on display 12.

[0042] FIG. 2 shows schematically that the control device 9 can comprise the projector 7 from FIG. 1 or include an additional projector 7′. The process parameters P, P′ set and/or displayed directly at the control device 9 can then be forwarded to the projector 7, 7′ of the control device 9 without any problems. Furthermore, FIG. 2 shows a schematic representation of a voice control module 40 which can be used to control the control device 9, in particular the operation of the projector 7, 7′.

[0043] The projector 7, 7′ shown in FIG. 1 and in FIG. 2 is formed to project at least one of the process parameters P, P′ set on the operating panel 11 of FIG. 2 and/or shown on the display 12 of FIG. 2 onto at least one projection area 13, 13′ (see FIG. 3), so that the projected process parameter P, P′ is visible to the screed operator of the paving screed 3.

[0044] The projection area 13, 13′ for imaging the process parameter P, P′ is shown in FIG. 3. In particular, the projector 7 can be formed to project the process parameter P, P′ onto the paving layer B produced by the road paver 1, which is shown schematically by the projection area 13. Furthermore, FIG. 3 shows that the projector 7 can alternatively or additionally be formed to project the process parameter P, P′ onto a projection area 13′ directly on the road paver 1. i.e., the road paver 1 itself is configured to form the projection area 13′.

[0045] FIG. 3 shows that the paving screed 3 forms the projection area 13′ for imaging the process parameter P, P′. In particular, the paving screed 3 in FIG. 3 has a base screed body 14 to which the laterally extending units 10, 10′ for varying the pave width are attached. As shown in FIG. 3, the 13′ projection area is formed on a top cover 15 of the base screed body 14.

[0046] FIG. 3 shows in dotted fines that the projector 7 can be attached to one of the load carrying spars 21a, 21b as an alternative to the shown attachment to the operator protecting roof 6, but mainly to the load carrying spar 21a, 21b, which is positioned directly behind a driver's seat 22.

[0047] The arrows A, A′ shown schematically in FIG. 3 indicate optional adjustability of the respective projection areas 13, 13′, for example depending on the position of the screed operator. In FIG. 3, for instance, the projection area 13, 13′ could be shifted to the opposite external control station 8′ if the screed operator changes from the right-hand side of paving screed 3, viewed in direction of travel R, i.e., from the external operating station 8 positioned there, to the opposite left-hand side to the external operating station 8′. A change of sides is possible via a tread plate 16 and could be detected by a presence detection unit 20 (see FIG. 2) of the control device 9, 9′.

[0048] FIG. 4 shows the paving screed 3 with extending units 10, 10′ extended to the sides. This makes it clear that the respective external control stations 8, 8′ are spaced further sideways from the base screed body 14 to create a larger pave width. In FIG. 4, the projection area 13′ is still on the top cover 15 of the base screed body 14. Process parameters P, P′ projected on the projection area 13′ could then he controlled by an operator standing behind the base screed body 14, centered on the tread plate 16. Likewise, the process parameters P, P′ projected onto the projection area 13′ remain perfectly visible to the driver.

[0049] FIG. 5 shows the paving screed 3 with extending units 10, 10′ extended sideways and with add-on parts 17, 17′ attached to them. The respective external control stations 8, 8′ are then positioned further out sideways to the base screed body 14. However, the process parameters P, P′ shown on the projection area 13′ remain excellently visualized on the base screed body 14, especially for the driver of the road paver 1.

[0050] FIG. 6 shows the road paver 1 with a laterally mounted layer thickness measuring device 30 for determining the layer thickness of the paving layer B. The layer thickness measuring device 30 is attached to a traction bar 19 for the paving screed 3. The layer thickness measuring device 30 has a beam section 31 positioned behind the paving screed 3, above the newly produced paving layer B. The projector 7 is attached to beam section 31 in order to project process parameters P′ set and/or displayed at external control station 8, e.g., the layer thickness measured by the layer thickness measuring device 30, onto the projection area 13.

[0051] The present disclosure is excellently suited to visualize the process parameters P, P′ set and/or displayed at the external control stations 8, 8′, possibly a selection thereof, for the operating personnel of the construction site in addition to the display at the control device 9, 9′ also isolated from it by means of projection on the projection area 13, 13′. This allows an improved quality control of the produced paving layer B.