Title:
MULTI-CONTROL VALVE UNIT AND CONSTRUCTION MACHINE
Document Type and Number:
WIPO Patent Application WO/2020/166591
Kind Code:
A1
Abstract:
Provided are a construction machine and a multi-control valve unit having a simple configuration. The multi-control valve unit comprises: a plurality of first pilot chambers; a plurality of second pilot chambers; a pressure oil flow channel which is formed in a first pilot chamber forming member and through which pressure oil to be supplied to the first pilot chambers and the second pilot chambers is circulated; a plurality of first proportional valves which adjust the pressure oil to be supplied from the pressure oil flow channel to the respective first pilot chambers; a plurality of second proportional valves which adjust the pressure oil to be supplied from the pressure oil flow channel to the respective second pilot chambers; a plurality of first pilot flow channels through which the pressure oil is circulated between the first proportional valves and the respective first pilot chambers; and a plurality of second pilot flow channels through which the pressure oil is circulated between the second proportional valves and the respective second pilot chambers.
Inventors:
AOKI SEIJI
FUJIYAMA KAZUTO
TODE YOSHIYUKI
TANAKA YOSHIKAZU
HATA NAOKI
FUJIYAMA KAZUTO
TODE YOSHIYUKI
TANAKA YOSHIKAZU
HATA NAOKI
Application Number:
PCT/JP2020/005282
Publication Date:
August 20, 2020
Filing Date:
February 12, 2020
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
F15B11/08; E02F9/22; F15B11/00
Foreign References:
| JP2018017347A | 2018-02-01 | |||
| JPH054185A | 1993-01-14 |
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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