Hitachi Construction Machinery Co., Ltd.

Kenta Nakagi

Shiho Izumi

Yasuhiko Kanari

Naoki Hayakawa

In a hydraulic excavator including a controller configured to calculate the magnitude of a position difference in a height direction between a construction target surface and a front work implement on the basis of the position of the construction target surface, the position of a machine main body which is calculated by a GNSS receiver, and the posture of the front work implement which is detected by a posture sensor. The controller records snapshot data of information about an operation sensor, a pressure sensor, the posture sensor, the GNSS receiver, and a radio in a predetermined period that is determined based on a time at which the magnitude of the position difference exceeds a predetermined value when the magnitude of the position difference exceeds the predetermined value, and diagnoses a cause of the magnitude of the position difference exceeding the predetermined value, on the basis of the snapshot data.

Work machine with machine control that stores snapshot data for equipment abnormality diagnosis

A calibration work support system includes an input device for inputting machine information including machine rank data on a hydraulic excavator and specification data on a front work implement, a display controller that generates a target posture image that is an image of the case in which the front work implement that takes target measurement posture is viewed with a point-of-view position and a line-of-sight direction of an operator M on the basis of the machine information input from the input device and target posture data defined in advance as the target measurement posture of the front work implement when an inertial measurement device is calibrated, and an HMD that displays the target posture image generated in the display controller. The HMD executes displaying in such a manner that the target posture image is superimposed on the actual front work implement viewed with the point-of-view position and the line-of-sight direction of the operator M.

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Tsukuba, Japan

Kenta Nakagi