A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CONSTRUCTION-MACHINERY HYDRAULIC CIRCUIT
A construction-machinery hydraulic circuit according to the present invention includes: a first pump line that connects a discharge port of a pump to a pump port of a first directional switching valve; a second pump line that is branched from the first pump line and that is connected to a pump port of a second directional switching valve; and a priority valve that is provided in the second pump line. The priority valve is configured so as to fully open the second pump line when the differential pressure between a discharge pressure of the pump and a load pressure of a first actuator is greaterthan a setting value and so as to reduce the degree of opening of the second pump line as the differential pressure becomes less, when the differential pressure therebetween is less than the settingvalue.
工程机械的油压回路具备：使泵的吐出口与第一方向切换阀的泵端口连接的第一泵管线；从第一泵管线分叉，与第二方向切换阀的泵端口连接的第二泵管线；以及设于第二泵管线上的优先阀。优先阀构成为：在泵的吐出压与第一执行器的负荷压的压差大于设定值时，使第二泵管线全开，在压差小于设定值时，该压差越小则使第二泵管线的开度越小。
CONSTRUCTION-MACHINERY HYDRAULIC CIRCUIT
A construction-machinery hydraulic circuit according to the present invention includes: a first pump line that connects a discharge port of a pump to a pump port of a first directional switching valve; a second pump line that is branched from the first pump line and that is connected to a pump port of a second directional switching valve; and a priority valve that is provided in the second pump line. The priority valve is configured so as to fully open the second pump line when the differential pressure between a discharge pressure of the pump and a load pressure of a first actuator is greaterthan a setting value and so as to reduce the degree of opening of the second pump line as the differential pressure becomes less, when the differential pressure therebetween is less than the settingvalue.
工程机械的油压回路具备：使泵的吐出口与第一方向切换阀的泵端口连接的第一泵管线；从第一泵管线分叉，与第二方向切换阀的泵端口连接的第二泵管线；以及设于第二泵管线上的优先阀。优先阀构成为：在泵的吐出压与第一执行器的负荷压的压差大于设定值时，使第二泵管线全开，在压差小于设定值时，该压差越小则使第二泵管线的开度越小。
CONSTRUCTION-MACHINERY HYDRAULIC CIRCUIT
工程机械的油压回路
AOKI SEIJI (author) / HIGASHIDE YOSHIYUKI (author) / OHIRA MASAHIRO (author) / NAKASHIMA HIDEKI (author)
2021-02-26
Patent
Electronic Resource
Chinese