| 摘要 |
PROBLEM TO BE SOLVED: To make a pressure loss hardly occur in hydraulic fluid passing through a solenoid valve which is provided for circulating at least a part to hydraulic fluid to be sent to a hydraulic actuator, when the valve is closed. SOLUTION: Two T-type fittings 43, 44 are assembled to a manifold 31 of a solenoid valve 17. Each pipeline is respectively connected to joint part 43a, 44a at the ends of the fittings 43, 44 so that the solenoid valve 17 is arranged across two pipelines connecting a steering valve and a steering cylinder. Hydraulic fluid passing through the solenoid valve 17 when the valve is closed, is not passed through relatively narrow oil paths 39a, 39b around a spool, but passes through large-section passages 45a, 46a extending along the axes of the exposed parts of the fittings 43, 44. |
