WORK MACHINE - HITACHI CONSTRUCTION MACH CO

Title:

WORK MACHINE

Document Type and Number:

WIPO Patent Application WO/2020/194620

Kind Code:

A1

Abstract:

The present invention is provided with: a multi-joint front work machine configured by connecting a boom, an arm, and a bucket which are driven members; a boom cylinder, an arm cylinder, and a bucket cylinder which are hydraulic actuators that drive respective driven members on the basis of operation signals; a plurality of operation members that outputs an operation signal to a hydraulic actuator, desired by an operator, among the plurality of hydraulic actuators; and a control device that outputs an operation signal to at least one of the plurality of hydraulic actuators so that the front work machine operates with respect to a work target of the front work machine on a preset target surface and within a region thereabove, or that performs a region limiting control for correcting the output operation signal and corrects the operation signal on the basis of information pertaining to an operation directly before performing the region limiting control of the hydraulic actuator that performs the region limiting control. Accordingly, it is possible to improve the accuracy of excavation work in machine control.

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JPH07305375	WORKING DEVICE FOR TAMPING
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Inventors:

TAKEUCHI HIROKI (JP)
IZUMI SHIHO (JP)
NARIKAWA RYU (JP)
MEGURIYA SHUUICHI (JP)
IGARASHI TERUKI (JP)

Application Number:

PCT/JP2019/013431

Publication Date:

October 01, 2020

Filing Date:

March 27, 2019

Export Citation:

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Assignee:

HITACHI CONSTRUCTION MACH CO (JP)

International Classes:

E02F3/43

Domestic Patent References:

WO1998059118A1	1998-12-30
WO2015137528A1	2015-09-17

Foreign References:

JPH0881977A	1996-03-26
JPH04213631A	1992-08-04
JPH05187409A	1993-07-27
US7979181B2	2011-07-12
JP2007009432A	2007-01-18

Other References: