Hitachi Construction Machinery Co., Ltd.

Joonyoung Roh

Kunitsugu Tomita

Satoshi Nakamura

Youhei Toriyama

Hiroshi Sakamoto

Naoki Hayakawa

A working machineincludes a design data obtainment unit, a topography measuring device, and a controller. The controllerextracts peripheral area shape data from the design data in the construction-site coordinate system, maps similar shape portions between the extracted peripheral area shape data and the current topography data in the current topography coordinate system, calculates a coordinate transformation matrix to transform from the current topography coordinate system to the construction-site coordinate system so that a difference in coordinate values of the mapped shape portions is minimized, and transforms the self-position and posture of the working machineand the current topography data from coordinates in the current topography coordinate system to coordinates in the construction-site coordinate system using the calculated coordinate transformation matrix.

Working machine

An excavation load calculated by an excavation load calculating section and an excavation distance calculated by an excavation distance calculating section are stored in a work result storage section in association with each other. A correspondence relation setting section sets correspondence relation between a target excavation load and a target excavation distance on the basis of a tendency of correspondence relation between the excavation load and the excavation distance stored in the work result storage section. The target excavation load is set on the basis of rated capacity information of a bucket. A target excavation distance calculating section calculates the target excavation distance on the basis of the correspondence relation set by the correspondence relation setting section and the target excavation load. The target excavation distance is displayed on a monitor.

Work machine

A controllermounted on a work machine calculates a target carried load representing a target value for a carried load carried by the work machine on the basis of loadage of a transportation machine in case the loadage is changed, calculates a minimum integration load value depending on the magnitude of the calculated target carried load, and calculates the loadage by integrating the carried load in case it is determined that a work implement has performed a loading operation on the transportation machine and in case the calculated carried load is equal to or larger than the minimum integration load value.

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Kasumigaura, Japan

Joonyoung Roh