Road paver with measuring device

Patent metadata

Field	Value
Publication number	US-9290894-B2
Application number	US-201213586588-A
Country	US
Kind code	B2
Filing date	Aug 15, 2012
Priority date	Aug 22, 2011
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

Road paver having a towing machine that is movable on a plane along a work area, and a screed provided to lay a road pavement, and having at least one measuring device configured to generate a point cloud that depicts a three-dimensional condition of the surface of the plane.

First claim

The invention claimed is:

1. Road paver having a towing machine movable on a plane along a work area and comprising a screed for laying a road pavement and at least one measuring device configured to register a surface that can be depicted as a point cloud by the measuring device, the measuring device comprising a 3D scanner to register the point cloud and a plurality of laser sensors that emit laser beams arranged in a matrix, the point cloud extends in three spatial dimensions relative to the measuring device to create a spatial depiction of the surface and comprises a plurality of points, each of said points being defined by 3D coordinates, wherein at least one pair of points of the point cloud is aligned in a first direction and at least one other pair of points of the point cloud lies at an angle to the first direction, and the measuring device being arranged movably to conduct the laser beams across an area for generating the point cloud with a predetermined movement sequence.

2. The road paver of claim 1 wherein the point cloud defines a surface condition of an area of the plane and/or of the road pavement.

3. The road paver of claim 1 wherein the measuring device is configured to filter out extreme 3D coordinates from the point cloud.

4. Road paver according to claim 1 wherein one measuring device is arranged on each side of the left and/or right, of the road paver, seen in the direction of travel.

5. Road paver according to claim 4 wherein the measuring device is configured to generate a point cloud for an area to the left and/or right alongside the work area.

6. Road paver according to claim 5 wherein the measuring device is configured to generate the point cloud for an area that partially overlaps a section of the work area.

7. Road paver according to claim 6 wherein the measuring device registers the 3D coordinates of the surface by means of the pulse duration, phase difference in comparison to a reference or by means of triangulation of optical beams.

Assignees

• Eul Achim
• Joseph Voegele Ag

Inventors

• Eul Achim

Classifications

• E01C23/07 Primary

  Apparatus combining measurement of the surface configuration of paving with application of material in proportion to the measured irregularities (measuring means only E01C23/01 {G01B}) · CPC title

• E01C19/006

  by laser or ultrasound · CPC title

• E01C19/48

  for laying-down the materials and consolidating them, or finishing the surface {, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ (E01C19/002, E01C23/065 take precedence; devices for guiding or controlling the machines along a predetermined path E01C19/004)} · CPC title