Asphalt finisher and management device for road construction machine
AssigneeSumitomo Construction Machinery Co., Ltd.
InventorNobuyuki Baba
Life of this patent
Estimating the term…
Abstract
An asphalt finisher includes a tractor, 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 include a region including a road surface placed and spread by the screed, and a planimetric feature that is used as a reference for a height of the road surface, within a measuring range.
Claims16
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.
A management device for a road construction machine, configured to
- receive results of measurements made by a distance measuring device which is attached to the road construction machine and is configured to perform measurements at a plurality of positions along a width direction of the road construction machine within a measuring range which includes a region including a road surface, 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,
- receive irregularities at the plurality of positions on the road surface with respect to the reference height determined by the planimetric feature, computed by a controller of the road construction machine based on an output of the distance measuring device, and a finished work quality of the road surface measured by the controller based on the computed irregularities, and
- store the received results of the measurements, the received irregularities, and the finished work quality in a storage device of the management device.
Dependencies are inferred from the claim text.