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Patent Searching and Data


Title:
CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/093424
Kind Code:
A1
Abstract:
Provided is a construction machine that can make the pressing force of a bucket during rolling compaction work be uniform without requiring an operator to do complex operations. A control device 18: determines whether rolling compaction work is being performed; calculates a front distance R, which is the distance from the pivot point of a boom 4 to a prescribed position B on the back face of a bucket 6; determines a target speed for the bucket so that the speed at which the bucket gets closer to a grade target face becomes slower as the front distance becomes larger; and notifies the operator of the work content of operation devices 9a, 9b in order to reach the target speed for the bucket during the rolling compaction work or controls hydraulic actuators 4a to 6a so that the bucket target speed is reached.

Inventors:
ISHIHARA Shinji (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
SAKAMOTO Hiroshi (HITACHI CONSTRUCTION MACHINERY CO. LTD., 650, Kandatsumachi, Tsuchiura-sh, Ibaraki 13, 〒3000013, JP)
MORIKI Hidekazu (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
NARIKAWA Ryu (6-6, Marunouchi 1-chome, Chiyoda-k, Tokyo 80, 〒1008280, JP)
Application Number:
JP2018/041499
Publication Date:
May 16, 2019
Filing Date:
November 08, 2018
Export Citation:
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Assignee:
HITACHI CONSTRUCTION MACHINERY CO., LTD. (16-1, Higashiueno 2-chome Taito-k, Tokyo 15, 〒1100015, JP)
International Classes:
E02F3/43; E02F9/20
Domestic Patent References:
WO2018179577A12018-10-04
Foreign References:
JP2007009432A2007-01-18
JP2012225084A2012-11-15
JP2017166308A2017-09-21
JP2012112108A2012-06-14
Attorney, Agent or Firm:
KAICHI IP (3-16, Nihonbashi-muromachi 4-chome Chuo-k, Tokyo 22, 〒1030022, JP)
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