Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hydraulic system for excavation
A hydraulic system (1A) for excavation according to an embodiment is mounted on an excavator having an excavation shaft having a telescopic structure, and comprises: a hydraulic motor (4) that rotates the excavation shaft; a direction switching valve (3) that is connected to the hydraulic motor (4) via a pair of feed/discharge lines (41, 42); and a hydraulic pump (2) that is connected to the direction switching valve (3) via a discharge line (22). The hydraulic system (1A) further comprises a pressure sensor (81) for measuring the discharge pressure of the hydraulic pump (2), a rotational speed sensor (73) for measuring the rotational speed of the hydraulic motor (4), and a control device (6) electrically connected to the pressure sensor (81) and the rotational speed sensor (73). When the discharge pressure of the hydraulic pump (2) measured by the pressure sensor (81) is greater than a first threshold value and the rotation speed of the hydraulic motor (4) measured by the rotation speed sensor (73) is less than a second threshold value, the control device (6) determines that the excavation shaft (17) is twisted.
一实施方式的挖掘用液压系统(1A)在具有伸缩结构的挖掘轴的挖掘机上装载，包括使挖掘轴旋转的液压马达(4)、通过一对给排线路(41、42)与液压马达(4)连接的方向切换阀(3)、和通过吐出线路(22)与方向切换阀(3)连接的液压泵(2)。此外，液压系统(1A)包括计测液压泵(2)的吐出压力的压力传感器(81)、计测液压马达(4)的转速的转速传感器(73)和与压力传感器(81)及转速传感器(73)电性连接的控制装置(6)。控制装置(6)在压力传感器(81)计测的液压泵(2)的吐出压力大于第一阈值，且转速传感器(73)计测的液压马达(4)的转速小于第二阈值时，判定挖掘轴(17)发生扭转。
Hydraulic system for excavation
A hydraulic system (1A) for excavation according to an embodiment is mounted on an excavator having an excavation shaft having a telescopic structure, and comprises: a hydraulic motor (4) that rotates the excavation shaft; a direction switching valve (3) that is connected to the hydraulic motor (4) via a pair of feed/discharge lines (41, 42); and a hydraulic pump (2) that is connected to the direction switching valve (3) via a discharge line (22). The hydraulic system (1A) further comprises a pressure sensor (81) for measuring the discharge pressure of the hydraulic pump (2), a rotational speed sensor (73) for measuring the rotational speed of the hydraulic motor (4), and a control device (6) electrically connected to the pressure sensor (81) and the rotational speed sensor (73). When the discharge pressure of the hydraulic pump (2) measured by the pressure sensor (81) is greater than a first threshold value and the rotation speed of the hydraulic motor (4) measured by the rotation speed sensor (73) is less than a second threshold value, the control device (6) determines that the excavation shaft (17) is twisted.
一实施方式的挖掘用液压系统(1A)在具有伸缩结构的挖掘轴的挖掘机上装载，包括使挖掘轴旋转的液压马达(4)、通过一对给排线路(41、42)与液压马达(4)连接的方向切换阀(3)、和通过吐出线路(22)与方向切换阀(3)连接的液压泵(2)。此外，液压系统(1A)包括计测液压泵(2)的吐出压力的压力传感器(81)、计测液压马达(4)的转速的转速传感器(73)和与压力传感器(81)及转速传感器(73)电性连接的控制装置(6)。控制装置(6)在压力传感器(81)计测的液压泵(2)的吐出压力大于第一阈值，且转速传感器(73)计测的液压马达(4)的转速小于第二阈值时，判定挖掘轴(17)发生扭转。
Hydraulic system for excavation
挖掘用液压系统
YOSHIDA IBUKI (Autor:in) / KURODA YUICHIRO (Autor:in)
05.09.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E02F
Baggern
,
DREDGING