Title:
OPERATION MACHINE
Document Type and Number:
WIPO Patent Application WO/2011/049079
Kind Code:
A1
Abstract:
Disclosed is an operation machine wherein computations are made, moment by moment, of the ground contact status of the operation machine, and the dynamic stability for which the inertial force and the external force that act on the operation machine are taken into account; and wherein the computed results are displayed and a warning is issued. More specifically, disclosed is an operation machine provided with a travel body, an operation machine body installed on the travel body, an operation front installed on the operation machine body in such a way as to be vertically swingable, and an operation implement installed at the tip of the operation front. This operation machine is also provided with a ZMP computing means for computing the coordinates of a ZMP by using position information, acceleration information, and external force information for various sections of the travel body and the operation machine body, which includes the operation front; and a stability computing means for computing a support polygon formed by a plurality of ground contact points between the operation machine and the ground and for issuing an overturn warning if the ZMP is included in a warning region formed inside the perimeter of the support polygon. Thus the ZMP and the support polygon comprising the warning region are computed, the computed results are displayed, and a warning is issued.
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Inventors:
MIZUOCHI MARIKO (JP)
ISHII AKINORI (JP)
YAMAGUCHI JINICHI (JP)
ISHII AKINORI (JP)
YAMAGUCHI JINICHI (JP)
Application Number:
PCT/JP2010/068356
Publication Date:
April 28, 2011
Filing Date:
October 19, 2010
Export Citation:
Assignee:
HITACHI CONSTRUCTION MACHINERY (JP)
MIZUOCHI MARIKO (JP)
ISHII AKINORI (JP)
YAMAGUCHI JINICHI (JP)
MIZUOCHI MARIKO (JP)
ISHII AKINORI (JP)
YAMAGUCHI JINICHI (JP)
International Classes:
E02F9/20; B66C23/90; E02F9/24
Foreign References:
| JP2006150567A | 2006-06-15 | |||
| JP2008012642A | 2008-01-24 | |||
| JP2871105B2 | 1999-03-17 | |||
| JP2871105B2 | 1999-03-17 | |||
| JPH07180192A | 1995-07-18 | |||
| JPH05319785A | 1993-12-03 |
Other References:
YOSHIKAWA, TSUNEO: "Robotto Seigyo Kisoron", 1988, CORONA PUBLISHING CO., LTD.
See also references of EP 2492404A4
See also references of EP 2492404A4
Attorney, Agent or Firm:
The Patent Body Corporate TAKEWA INTERNATIONAL PATENT OFFICE (JP)
Patent business corporation Takekazu international patent firm (JP)
Patent business corporation Takekazu international patent firm (JP)
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