Title:
CONTROL DEVICE FOR WORKING MACHINE
Document Type and Number:
WIPO Patent Application WO/2008/015801
Kind Code:
A1
Abstract:
A control device for a working machine, in which, even if the weight of a working
arm of the machine is changed, optimum operability is automatically provided.
In the working machine, at least a part of the working arm operated by hydraulic
actuators (4bm, 5st, 6bk) is interchangeable, and the working machine has pilot
operated control valves (24, 25, 26, 27, 28) for controlling the hydraulic actuators
(4bm, 5st, 6bk), electromagnetic proportional valves (24ev, 25ev, 26ev, 27ev,
28ev) for operating the pilot operated control valves (24, 25, 26, 27, 28) by pilot
control pressure according to an electric signal corresponding to the amount
of manual operation of the electromagnetic proportional valves, measurement
means (34bm, 35st, 36bk) for measuring the weight of at least a portion of the working
arm, and a controller (31) for converting characteristics of the amount of manual
operation and pilot control pressure of the electromagnetic proportional valves
(24ev, 25ev, 26ev, 27ev, 28ev) into characteristics according to the weight
of the working arm measured by the measurement means (34bm, 35st, 36bk).
Inventors:
NISHIKAWA, Hiroyasu (C/O SHIN CATERPILLAR MITSUBISHI LTD, 10-1 Yoga 4-chome, Setagaya-k, Tokyo 30, 1588530, JP)
西川 裕康 (〒30 東京都世田谷区用賀四丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1588530, JP)
SHIMAHARA, Sei (C/O SHIN CATERPILLAR MITSUBISHI LTD, 10-1 Yoga 4-chome, Setagaya-k, Tokyo 30, 1588530, JP)
西川 裕康 (〒30 東京都世田谷区用賀四丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1588530, JP)
SHIMAHARA, Sei (C/O SHIN CATERPILLAR MITSUBISHI LTD, 10-1 Yoga 4-chome, Setagaya-k, Tokyo 30, 1588530, JP)
Application Number:
JP2007/053026
Publication Date:
February 07, 2008
Filing Date:
February 20, 2007
Export Citation:
Assignee:
SHIN CATERPILLAR MITSUBISHI LTD. (10-1, Yoga 4-chome Setagaya-k, Tokyo 30, 1588530, JP)
新キャタピラー三菱株式会社 (〒30 東京都世田谷区用賀四丁目１０番１号 Tokyo, 1588530, JP)
NISHIKAWA, Hiroyasu (C/O SHIN CATERPILLAR MITSUBISHI LTD, 10-1 Yoga 4-chome, Setagaya-k, Tokyo 30, 1588530, JP)
西川 裕康 (〒30 東京都世田谷区用賀四丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1588530, JP)
新キャタピラー三菱株式会社 (〒30 東京都世田谷区用賀四丁目１０番１号 Tokyo, 1588530, JP)
NISHIKAWA, Hiroyasu (C/O SHIN CATERPILLAR MITSUBISHI LTD, 10-1 Yoga 4-chome, Setagaya-k, Tokyo 30, 1588530, JP)
西川 裕康 (〒30 東京都世田谷区用賀四丁目１０番１号 新キャタピラー三菱株式会社内 Tokyo, 1588530, JP)
International Classes:
F15B11/028; E02F9/20; E02F9/22; F15B11/08
Attorney, Agent or Firm:
KABASAWA, Joo et al. (NSO BLDG, 1-22Shinjuku 3-chome, Shinjuku-k, Tokyo 22, 1600022, JP)
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