CONSTRUCTION MACHINE - HITACHI CONSTRUCTION MACHINERY

Title:

CONSTRUCTION MACHINE

Document Type and Number:

WIPO Patent Application WO/2015/125503

Kind Code:

A1

Abstract:

Provided is a construction machine characterized by comprising: a traveling body (10); a rotating body (20) rotatably provided on the traveling body (10); motors (25, 27) for rotation, the motors (25, 27) rotating and driving the rotating body; a boom (31) connected to the rotating body (20); a boom cylinder (32) for raising and lowering the boom (31); a rotation operation device (72) for instructing the rotational movement of the rotating body (20); a boom operation device (78) for instructing the rising and lowering movement of the boom (31); a detector (74d) for detecting the bottom pressure of the boom cylinder (32); and a controller (80) which, while signals for rotation operation and boom raising operation are being inputted, reduces the rotational speed of the rotating body (20) in response to a signal from the detector (74d), relative to a reference rotational speed corresponding to the signal of rotation operation. As a result of this configuration, a load acting on the boom can be felt on the basis of operation of a front working machine, and the front working machine can be operated without being affected by the load on the boom along a path corresponding to operation.

Inventors:

KANETA TOMOAKI (JP)
ISHIKAWA KOUJI (JP)
IMURA SHINYA (JP)
SATAKE HIDETOSHI 佐竹　英&

Application Number:

PCT/JP2015/050190

Publication Date:

August 27, 2015

Filing Date:

January 06, 2015

Export Citation:

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Assignee:

HITACHI CONSTRUCTION MACHINERY (JP)

International Classes:

E02F9/20; E02F9/22; F15B11/04

Foreign References:

JPS59126829A	1984-07-21
JPS62196252U	1987-12-14
JP2011038298A	2011-02-24

Other References: