Construction machine and construction machine management system
AssigneesHiroshima University, Kobelco Construction Machinery Co., Ltd.
InventorsRyota HASHIMOTO, Yasuhiko SHIMAZU, Takunori YAMAGUCHI, Sho OKIMOTO, Kazushige KOIWAI
Life of this patent
Estimating the term…
Abstract
A hydraulic excavator includes a work attachment a drive unit, a load cell, a machine load calculator, a soil pressure load calculator, and a soil quality estimator. The machine load calculator calculates, from orientation information of the work attachment and information about a load that the drive unit receives, a machine load, which is a load that a bucket receives from earth and sand. The soil pressure load calculator calculates, from a shape of a soil mass, the orientation information, the shape of the bucket, the density of the soil, a wall surface frictional angle, a soil pressure load.
Claims30
A construction machine comprising:
- a machine body including a travelling unit capable of travelling on a ground surface;
- a work attachment including a rising and falling body supported by the machine body so as to be rotatable in a rising and falling direction with respect to the machine body, the work attachment including a bucket rotatably supported by a distal end of the rising and falling body;
- a drive unit that allows driving of the work attachment such that the bucket excavates the ground surface;
- an orientation information acquisition unit that acquires orientation information that is information regarding an orientation of the work attachment relative to the ground surface;
- a drive load information acquisition unit that acquires drive load information that is information regarding a load received by the drive unit as the bucket excavates the ground surface;
- a machine load calculator that calculates a machine load that is a load received by the bucket from earth and sand from the orientation information acquired by the orientation information acquisition unit and the drive load information acquired by the drive load information acquisition unit as the bucket excavates the ground surface;
- a soil pressure load calculator that calculates a soil pressure load that is a load applied to the bucket by a soil mass, based on a soil pressure theory from a shape of the soil mass constituted by a soil dammed by the bucket, the orientation information acquired by the orientation information acquisition unit, a shape of the bucket, a density of the soil, and a wall surface frictional angle between the soil and the bucket as the bucket excavates the ground surface;
- and
- a soil quality estimator that estimates a soil quality of the soil at a work site based on the machine load calculated by the machine load calculator and the soil pressure load calculated by the soil pressure load calculator.
Dependencies are inferred from the claim text.