Title:
MULTI-CONTROL VALVE UNIT AND CONSTRUCTION MACHINE
Document Type and Number:
Japanese Patent JP2020133692
Kind Code:
A
Abstract:
To provide a multi-control valve unit and a construction machine with a simple configuration.SOLUTION: A multi-control valve unit includes a plurality of first pilot chambers, a plurality of second pilot chambers, a pressure oil flow passage formed in a first pilot chamber forming member so that pressure oil supplied to each of the first pilot chambers and each of the second pilot chambers flows therethrough, a plurality of first proportional valves for adjusting pressure oil supplied from the pressure oil flow passage to each of the first pilot chambers, a plurality of second proportional valves for adjusting pressure oil supplied from the pressure oil flow passage to each of the second pilot chambers, a plurality of first pilot flow passages through which the pressure oil flows between each of the first proportional valves and each of the first pilot chambers, and a plurality of second pilot flow passages through which the pressure oil flows between each of the second proportional valves and each of the second pilot chambers.SELECTED DRAWING: Figure 5
Inventors:
AOKI SEIJI
FUJIYAMA KAZUTO
HIGASHIDE YOSHIYUKI
HATA NAOKI
TANAKA YOSHIKAZU
FUJIYAMA KAZUTO
HIGASHIDE YOSHIYUKI
HATA NAOKI
TANAKA YOSHIKAZU
Application Number:
JP2019024596A
Publication Date:
August 31, 2020
Filing Date:
February 14, 2019
Export Citation:
Assignee:
KAWASAKI HEAVY IND LTD
International Classes:
F15B11/00; F15B11/08
Domestic Patent References:
| JP2018017347A | 2018-02-01 | |||
| JPH054185A | 1993-01-14 |
Attorney, Agent or Firm:
Patent business corporation Yuko patent office