Patent ID: 11952730
Assignee: SUMITOMO CONSTRUCTION MACHINERY CO., LTD.
Field: Civil engineering (Other fields)
Classification: CPC E  Y | IPC E

Claim 0:
1. An asphalt finisher comprising:
a tractor having a width along a width direction thereof;
a hopper, provided on a front side of the tractor, and configured to receive a pavement material;
a conveyor configured to supply the pavement material in the hopper to a rear side of the tractor;
a screw configured to place and spread the pavement material supplied by the conveyor on a rear side of the tractor;
a screed configured to lay and spread the pavement material placed and spread by the screw on a rear side of the screw; and
a distance measuring device, configured to perform measurements at a plurality of positions along the width direction within a measuring range which includes a region on a rear side of the screed and including a road surface placed and spread by the screed, and a planimetric feature that is located at a position outside the road surface along the width direction and is used as a reference height for a height of the road surface, wherein the distance measuring device includes a sensor configured to measure both the road surface and the planimetric feature; and
a controller configured to compute irregularities at the plurality of positions on the road surface with respect to the reference height determined by the planimetric feature, based on an output of the distance measuring device, and measure a finished work quality of the road surface placed and spread by the screed, based on the computed irregularities.