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    • 1. 发明授权
    • Electric drive unit for construction machine
    • 建筑机械电动机组
    • US09187880B2
    • 2015-11-17
    • US14113921
    • 2012-05-10
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • E02F3/22E02F9/20E02F3/30E02F9/22E02F3/32
    • E02F9/2296E02F3/325E02F9/207E02F9/2091E02F9/2217
    • An electric drive unit for a construction machine is capable of increasing the operating time of the construction machine. The electric drive unit has an electricity storage device, a hydraulic pump of variable displacement type which is driven by a motor/generator, a regulator which performs variable control on the displacement volume of the hydraulic pump, a bidirectional converter which performs variable control on the revolution speed of the motor/generator, and an LS control device which controls the regulator and the bidirectional converter so that LS differential pressure Pls equals a target value Pgr. The bidirectional converter performs regeneration control for converting the inertial force of the rotor of the motor/generator into electric power thereby charging the electricity storage device when the revolution speed of the motor/generator is decreased in response to an excess of the LS differential pressure Pls over the target value Pgr.
    • 用于建筑机械的电驱动单元能够增加施工机械的操作时间。 电驱动单元具有蓄电装置,由电动机/发电机驱动的可变排量型液压泵,对液压泵的排量进行可变控制的调节器,对该液压泵进行变量控制的双向转换器 马达/发电机的转速以及控制调节器和双向转换器的LS控制装置,使得LS压差P1s等于目标值Pgr。 双向转换器执行用于将电动机/发电机的转子的惯性力转换成电力的再生控制,从而当电动机/发电机的转速响应于LS压差P1s过大而减小时对蓄电装置充电 超过目标值Pgr。
    • 2. 发明申请
    • ELECTRIC DRIVE UNIT FOR CONSTRUCTION MACHINE
    • 建筑机械电驱动装置
    • US20140052350A1
    • 2014-02-20
    • US14113921
    • 2012-05-10
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • Yasutaka TsurugaKiwamu TakahashiTatsuo TakishitaHajime Kurikuma
    • E02F9/22
    • E02F9/2296E02F3/325E02F9/207E02F9/2091E02F9/2217
    • An electric drive unit for a construction machine is capable of increasing the operating time of the construction machine. The electric drive unit has an electricity storage device, a hydraulic pump of variable displacement type which is driven by a motor/generator, a regulator which performs variable control on the displacement volume of the hydraulic pump, a bidirectional converter which performs variable control on the revolution speed of the motor/generator, and an LS control device which controls the regulator and the bidirectional converter so that LS differential pressure Pls equals a target value Pgr. The bidirectional converter performs regeneration control for converting the inertial force of the rotor of the motor/generator into electric power thereby charging the electricity storage device when the revolution speed of the motor/generator is decreased in response to an excess of the LS differential pressure Pls over the target value Pgr.
    • 用于建筑机械的电驱动单元能够增加施工机械的操作时间。 电驱动单元具有蓄电装置,由电动机/发电机驱动的可变排量型液压泵,对液压泵的排量进行可变控制的调节器,对该液压泵进行变量控制的双向转换器 马达/发电机的转速以及控制调节器和双向转换器的LS控制装置,使得LS压差P1s等于目标值Pgr。 双向转换器执行用于将电动机/发电机的转子的惯性力转换成电力的再生控制,从而当电动机/发电机的转速响应于LS压差P1s过大而减小时对蓄电装置充电 超过目标值Pgr。
    • 4. 发明授权
    • Swivel joint for construction machine
    • 建筑机械用旋转接头
    • US07798738B2
    • 2010-09-21
    • US10567908
    • 2004-12-06
    • Junya KawamotoKazuyoshi YamadaYasutaka TsurugaKenji Itou
    • Junya KawamotoKazuyoshi YamadaYasutaka TsurugaKenji Itou
    • F16K99/00
    • E02F9/2275B66C23/84E02F9/006F16L27/093Y10T403/257
    • A swivel joint for a construction machine is mounted to an upper track frame, and a body is rotatable together with a swing structure main frame in an opening through engagement between a stopper projection and a stopper plate. Tubes on the swing structure side are connected to an upper end surface of the body by using fittings in concentrated layout, and tubes on the travel structure side are connected to a lower portion of the spindle by using fittings. The body has thicker wall portions in sidewalls thereof, and a plurality of axial passages communicating with a plurality of circumferential grooves are formed inside the thicker wall portions. The plurality of axial passages are opened at the upper end surface of the body, and the tubes on the swing structure side are connected to the upper end surface of the body in concentrated layout.
    • 用于建筑机械的旋转接头安装到上部履带架上,并且主体通过止动突起和止动板之间的接合可旋转地与摆动结构主框架一起打开。 摆动结构侧的管通过集中布置的配件连接到主体的上端表面,并且行进结构侧的管通过使用配件连接到主轴的下部。 主体在其侧壁具有较厚的壁部,并且在较厚的壁部内部形成有与多个周向沟槽连通的多个轴向通道。 多个轴向通道在主体的上端面开口,并且摆动结构侧的管以集中的布局连接到主体的上端面。
    • 8. 发明授权
    • Engine speed control system for construction machine
    • 发动机转速控制系统
    • US06176126B1
    • 2001-01-23
    • US09321217
    • 1999-05-27
    • Yasutaka TsurugaKenichiro NakataniJunya KawamotoTakashi Kanai
    • Yasutaka TsurugaKenichiro NakataniJunya KawamotoTakashi Kanai
    • G01M1500
    • E02F9/2246E02F9/2239E02F9/2285E02F9/2292
    • An engine speed control system for a construction machine is arranged in association with its hydraulic circuit, which has main pumps, a communication line through which input ports of travel-controlling directional control valves are connected with each other, and a travel-controlling communication valve arranged in the communication line. The engine speed control system is provided with pilot valves arranged in a pilot line to control traveling, pilot valves arranged in a pilot line to control booms and the like, pilot valves arranged in a pilot line to control revolving, earth moving and the like, a pressure sensor for detecting pressures in the pilot lines, another pressure sensor for detecting a pressure in the pilot line, an engine controller for performing automatic idling control or its cancellation in accordance with signals from the pressure sensors, and a signal line for changing over the travel-controlling communication line into a communicating position in response to a pressure in the pilot valve.
    • 一种用于建筑机械的发动机转速控制系统与其具有主泵的液压回路相关联地设置有:行进控制方向控制阀的输入端口通过其彼此连接的通信线路,以及行驶控制连通阀 布置在通信线路中。 发动机转速控制系统配备有先导管路中的先导阀,用于控制配置在先导管路中的行驶式先导阀,以控制吊杆等,配置在先导管路中的先导阀,以控制回转,移动等, 用于检测先导管路中的压力的​​压力传感器,用于检测先导管路中的压力的​​另一个压力传感器,根据来自压力传感器的信号执行自动空转控制或其消除的发动机控制器,以及用于切换的信号线 行程控制通信线路响应于先导阀中的压力而进入通信位置。