Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Utility vehicle
This utility vehicle is equipped with an implement comprising a boom, an arm, and a bucket. An arm cylinder drives the arm. A direction control valve has a movable spool, and the movement of the spool supplies hydraulic oil to the arm cylinder, thereby operating the arm cylinder. The oil path is connected to the direction control valve. Pilot oil for moving the spool flows through the oil path. A proportional solenoid valve for arm excavation is provided to the oil path. An arm operating member enables the operator to operate the driving of the arm. A determining unit determines whether the control variable of the arm operation member is in a first operating state in which a predetermined value is not exceeded, or a second operating state in which a predetermined value is exceeded. The setting unit sets a command current which commands the degree of opening of the proportional solenoid valve for arm excavation. The setting unit sets the command current to a constant value in a first operating state.
Utility vehicle
This utility vehicle is equipped with an implement comprising a boom, an arm, and a bucket. An arm cylinder drives the arm. A direction control valve has a movable spool, and the movement of the spool supplies hydraulic oil to the arm cylinder, thereby operating the arm cylinder. The oil path is connected to the direction control valve. Pilot oil for moving the spool flows through the oil path. A proportional solenoid valve for arm excavation is provided to the oil path. An arm operating member enables the operator to operate the driving of the arm. A determining unit determines whether the control variable of the arm operation member is in a first operating state in which a predetermined value is not exceeded, or a second operating state in which a predetermined value is exceeded. The setting unit sets a command current which commands the degree of opening of the proportional solenoid valve for arm excavation. The setting unit sets the command current to a constant value in a first operating state.
Utility vehicle
KAMI YOSHIKI (Autor:in) / YAMADA TAKEO (Autor:in)
22.04.2015
Patent
Elektronische Ressource
Englisch
IPC:
E02F
Baggern
,
DREDGING