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1. (WO2001025549) TARGET EXCAVATION SURFACE SETTING DEVICE FOR EXCAVATION MACHINE, RECORDING MEDIUM THEREFOR AND DISPLAY UNIT

Pub. No.:    WO/2001/025549    International Application No.:    PCT/JP2000/006763
Publication Date: Apr 12, 2001 International Filing Date: Sep 29, 2000
IPC: E02F 3/43
E02F 9/20
E02F 9/22
E02F 9/26
Applicants: HITACHI CONSTRUCTION MACHINERY CO., LTD.

FUJISHIMA, Kazuo

WATANABE, Hiroshi

OGURA, Hiroshi

TOMITA, Sadahisa

Inventors: FUJISHIMA, Kazuo

WATANABE, Hiroshi

OGURA, Hiroshi

TOMITA, Sadahisa

Title: TARGET EXCAVATION SURFACE SETTING DEVICE FOR EXCAVATION MACHINE, RECORDING MEDIUM THEREFOR AND DISPLAY UNIT
Abstract:
A setting/display processing unit (11) of a control unit (9) comprises means (11b, 11c, 11d) that use signals of angle detectors (8a, 8b) when a front device is in a preset positional relation with respect to a laser reference surface and a signal of a setter (7) to compute the positional relations among a car body, an external reference and a target excavation surface, and means (11e, 11f, 11g, 11h, 11j) that perform image processing using the positional relations and generate/output image signals for displaying the positional relations among the car body, the external reference and the target excavation surface; and a display device (12) displays on a display unit (20) the schematic diagram of the car body and the lines of the external reference and the target excavation surface using the above positional relations. Whereby, the target excavation surface can be easily set and a setting error with respect to the external reference is not likely to occur when a specified-depth surface is continuously excavated over a long distance using the external reference.