A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
SHOVEL AND DIRECTIONAL CONTROL VALVE GROUP FOR CONSTRUCTION MACHINE
To provide a directional control valve group for construction machine capable of appropriately controlling a supply amount of pressure oil discharged from a hydraulic pump to a hydraulic cylinder.SOLUTION: A directional control valve group for construction machine for controlling a supply amount of pressure oil discharged from a hydraulic pump to a hydraulic actuator, comprises: a cylinder port Cprt configured to supply oil pressure to the hydraulic actuator; a bridge passage Rb connected to the cylinder port Cprt in such as manner as to switch communication/interruption according to change of a position of a spool; and an internal passage RV1 configured to supply oil pressure discharged from the hydraulic pump to the bridge passage Rb, wherein the spool is arranged in the internal passage RV1.SELECTED DRAWING: Figure 3
【課題】油圧ポンプから吐出される圧油の油圧シリンダへの供給量をより適切に制御することができる建設機械用方向制御弁グループを提供すること。【解決手段】油圧ポンプから吐出される圧油の油圧アクチュエータへの供給量を制御する建設機械用方向制御弁グループは、油圧アクチュエータに圧油を供給するシリンダポートＣｐｒｔと、シリンダポートＣｐｒｔとスプールの位置の変化により連通・非連通に接続されるブリッジ通路Ｒｂと、ブリッジ通路Ｒｂへ油圧ポンプから吐出される圧油を供給する内部通路ＲＶ１と、を備え、スプールは、内部通路ＲＶ１に配置されている。【選択図】図３
SHOVEL AND DIRECTIONAL CONTROL VALVE GROUP FOR CONSTRUCTION MACHINE
To provide a directional control valve group for construction machine capable of appropriately controlling a supply amount of pressure oil discharged from a hydraulic pump to a hydraulic cylinder.SOLUTION: A directional control valve group for construction machine for controlling a supply amount of pressure oil discharged from a hydraulic pump to a hydraulic actuator, comprises: a cylinder port Cprt configured to supply oil pressure to the hydraulic actuator; a bridge passage Rb connected to the cylinder port Cprt in such as manner as to switch communication/interruption according to change of a position of a spool; and an internal passage RV1 configured to supply oil pressure discharged from the hydraulic pump to the bridge passage Rb, wherein the spool is arranged in the internal passage RV1.SELECTED DRAWING: Figure 3
【課題】油圧ポンプから吐出される圧油の油圧シリンダへの供給量をより適切に制御することができる建設機械用方向制御弁グループを提供すること。【解決手段】油圧ポンプから吐出される圧油の油圧アクチュエータへの供給量を制御する建設機械用方向制御弁グループは、油圧アクチュエータに圧油を供給するシリンダポートＣｐｒｔと、シリンダポートＣｐｒｔとスプールの位置の変化により連通・非連通に接続されるブリッジ通路Ｒｂと、ブリッジ通路Ｒｂへ油圧ポンプから吐出される圧油を供給する内部通路ＲＶ１と、を備え、スプールは、内部通路ＲＶ１に配置されている。【選択図】図３
SHOVEL AND DIRECTIONAL CONTROL VALVE GROUP FOR CONSTRUCTION MACHINE
ショベル及び建設機械用方向制御弁グループ
HASHIMOTO HIROFUMI (author)
2019-04-04
Patent
Electronic Resource
Japanese
DIRECTIONAL CONTROL VALVE GROUP FOR CONSTRUCTION MACHINE
| European Patent Office | 2016