Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The present invention relates to a control valve and a construction machine. A hydraulic control valve (2) according to an embodiment supplies hydraulic oil discharged from a hydraulic pump (5) to an arm cylinder (25) via a supply flow path (7), and controls the hydraulic oil such that the hydraulic oil pressed from the arm cylinder (25) is returned to a tank (9) via a tank flow path (8). The hydraulic control valve (2) has a regeneration valve (30) that returns all of the hydraulic oil extruded from the arm cylinder (25) to the supply flow path (7) when a first pressure of the hydraulic oil discharged from the hydraulic pump (5) and a second pressure of the hydraulic oil extruded from the arm cylinder (25) have a pressure difference and the first pressure is lower than the second pressure.
本发明关于控制阀以及建筑机械，一实施方式的液压控制阀(2)以将从液压泵(5)喷出的工作油经由供给流路(7)供给到斗杆液压缸(25)，并使从斗杆液压缸(25)压出的工作油经由罐流路(8)返回到罐(9)的方式控制工作油。液压控制阀(2)具有再生阀(30)，在从液压泵(5)喷出的工作油的第一压力与从斗杆液压缸(25)压出的工作油的第二压力具有压力差且第一压力低于第二压力的情况下，该再生阀(30)使从斗杆液压缸(25)压出的全部工作油返回到供给流路(7)。
The present invention relates to a control valve and a construction machine. A hydraulic control valve (2) according to an embodiment supplies hydraulic oil discharged from a hydraulic pump (5) to an arm cylinder (25) via a supply flow path (7), and controls the hydraulic oil such that the hydraulic oil pressed from the arm cylinder (25) is returned to a tank (9) via a tank flow path (8). The hydraulic control valve (2) has a regeneration valve (30) that returns all of the hydraulic oil extruded from the arm cylinder (25) to the supply flow path (7) when a first pressure of the hydraulic oil discharged from the hydraulic pump (5) and a second pressure of the hydraulic oil extruded from the arm cylinder (25) have a pressure difference and the first pressure is lower than the second pressure.
本发明关于控制阀以及建筑机械，一实施方式的液压控制阀(2)以将从液压泵(5)喷出的工作油经由供给流路(7)供给到斗杆液压缸(25)，并使从斗杆液压缸(25)压出的工作油经由罐流路(8)返回到罐(9)的方式控制工作油。液压控制阀(2)具有再生阀(30)，在从液压泵(5)喷出的工作油的第一压力与从斗杆液压缸(25)压出的工作油的第二压力具有压力差且第一压力低于第二压力的情况下，该再生阀(30)使从斗杆液压缸(25)压出的全部工作油返回到供给流路(7)。
Control valve and construction machine
控制阀以及建筑机械
FUKUI SATOMA (Autor:in)
01.10.2024
Patent
Elektronische Ressource
Chinesisch