A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydraulic shovel and hydraulic shovel control method
A hydraulic shovel is provided with: a power take-off device; the engine is connected with the power output device; the hydraulic pump for rotation is connected with the power output device and is driven by the engine; a hydraulic motor for rotation, which is driven by the hydraulic oil discharged from the hydraulic pump for rotation; a first main oil passage connecting a first discharge port of the hydraulic pump for rotation and a first suction port of the hydraulic motor for rotation; a second main oil passage connecting a second discharge port of the hydraulic pump for rotation and a second suction port of the hydraulic motor for rotation; a neutral holding valve which is disposed in the first main oil passage and the second main oil passage and controls the flow of the hydraulic oil; a regenerated energy absorbing device connected to the power take-off device and absorbing regenerated energy generated by hydraulic oil supplied from the hydraulic motor for rotation to the hydraulic pump for rotation through an outlet throttle opening of the neutral holding valve; and a valve control unit that controls the area of the outlet throttle opening on the basis of the state of the regenerative energy absorption device.
液压挖掘机具备：动力输出装置；发动机，其与动力输出装置连接；回转用液压泵，其与动力输出装置连接，并由发动机驱动；回转用液压马达，其由从回转用液压泵排出的液压油来驱动；第一主油通道，其连接回转用液压泵的第一排出口与回转用液压马达的第一吸入口；第二主油通道，其连接回转用液压泵的第二排出口与回转用液压马达的第二吸入口；中立保持阀，其配置于第一主油通道及第二主油通道，用于控制液压油的流通；再生能量吸收设备，其与动力输出装置连接，并吸收由液压油产生的再生能量，所述液压油是从回转用液压马达经由中立保持阀的出口节流开口供给至回转用液压泵的液压油；以及阀门控制部，其基于再生能量吸收设备的状态来控制出口节流开口的面积。
Hydraulic shovel and hydraulic shovel control method
A hydraulic shovel is provided with: a power take-off device; the engine is connected with the power output device; the hydraulic pump for rotation is connected with the power output device and is driven by the engine; a hydraulic motor for rotation, which is driven by the hydraulic oil discharged from the hydraulic pump for rotation; a first main oil passage connecting a first discharge port of the hydraulic pump for rotation and a first suction port of the hydraulic motor for rotation; a second main oil passage connecting a second discharge port of the hydraulic pump for rotation and a second suction port of the hydraulic motor for rotation; a neutral holding valve which is disposed in the first main oil passage and the second main oil passage and controls the flow of the hydraulic oil; a regenerated energy absorbing device connected to the power take-off device and absorbing regenerated energy generated by hydraulic oil supplied from the hydraulic motor for rotation to the hydraulic pump for rotation through an outlet throttle opening of the neutral holding valve; and a valve control unit that controls the area of the outlet throttle opening on the basis of the state of the regenerative energy absorption device.
液压挖掘机具备：动力输出装置；发动机，其与动力输出装置连接；回转用液压泵，其与动力输出装置连接，并由发动机驱动；回转用液压马达，其由从回转用液压泵排出的液压油来驱动；第一主油通道，其连接回转用液压泵的第一排出口与回转用液压马达的第一吸入口；第二主油通道，其连接回转用液压泵的第二排出口与回转用液压马达的第二吸入口；中立保持阀，其配置于第一主油通道及第二主油通道，用于控制液压油的流通；再生能量吸收设备，其与动力输出装置连接，并吸收由液压油产生的再生能量，所述液压油是从回转用液压马达经由中立保持阀的出口节流开口供给至回转用液压泵的液压油；以及阀门控制部，其基于再生能量吸收设备的状态来控制出口节流开口的面积。
Hydraulic shovel and hydraulic shovel control method
液压挖掘机以及液压挖掘机的控制方法
SUMINO WATARU (author) / NAGURA SHINOBU (author) / YOKOYAMA YUKI (author) / IKEDA MASATOSHI (author)
2023-10-20
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
HYDRAULIC SYSTEM OF HYDRAULIC SHOVEL, HYDRAULIC SHOVEL, AND CONTROL METHOD OF HYDRAULIC SHOVEL
| European Patent Office | 2022
HYDRAULIC SYSTEM, HYDRAULIC SHOVEL AND CONTROL METHOD FOR HYDRAULIC SHOVEL
| European Patent Office | 2023
Hydraulic system for hydraulic shovel, hydraulic shovel, and method for controlling hydraulic shovel
| European Patent Office | 2023
Hydraulic shovel and method of controlling hydraulic shovel
| European Patent Office | 2017