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公开(公告)号：US09316236B2
公开(公告)日：2016-04-19
申请号：US13713680
申请日：2012-12-13
发明人： Hiroo Kondo , Takaharu Michida , Katsuki Yamagata , Naoto Hori , Naoya Kitazumi , Satoshi Maekawa , Naoki Sugano
IPC分类号： F15B11/04 , F15B9/08 , F15B11/044 , F15B21/04
CPC分类号： F15B9/08 , F15B11/044 , F15B21/047 , F15B2211/3116 , F15B2211/3157 , F15B2211/329 , F15B2211/353 , F15B2211/46 , F15B2211/7058 , F15B2211/75 , F15B2211/761 , F15B2211/8609
摘要： Provided is a hydraulic driving apparatus for a working machine, preventing an excessive decrease in pressure on a meter-in side and moving a load at a stable speed in a lowering direction. The apparatus comprises: a hydraulic pump; a hydraulic actuator; a manipulation device; a working hydraulic circuit including a meter-in flow passage and a meter-out flow passage; a control valve for changing a state of supply of hydraulic fluid to drive the hydraulic actuator at a speed designated by the manipulation device; a meter-in flow adjuster and a meter-out flow adjuster adapted to adjust a meter-in flow rate and meter-in flow rate respectively to respective value corresponding to the speed designated by the manipulation device; and a relief valve. The meter-in and meter-out flow adjusters have respective flow adjustment characteristics such that the meter-in flow rate is greater than the meter-out flow rate.
摘要翻译： 本发明提供一种用于工作机械的液压驱动装置，防止了进入侧的压力的过度降低，并且在下降方向上以稳定的速度移动负载。 该装置包括：液压泵; 液压执行器; 操纵装置; 工作液压回路，包括流入通道和流出通道; 控制阀，用于改变液压流体的供给状态，以由操纵装置指定的速度驱动液压致动器; 一个流入式流量调节器和一个流出量调节器，适用于分别将流量和流量流量调整到对应于由操纵装置指定的速度的相应值; 和安全阀。 输入和输出流量调节器具有相应的流量调节特性，使得流入流量大于流出流量。
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公开(公告)号：US20130152575A1
公开(公告)日：2013-06-20
申请号：US13713680
申请日：2012-12-13
发明人： Hiroo Kondo , Takaharu Michida , Katsuki Yamagata , Naoto Hori , Naoya Kitazumi , Satoshi Maekawa , Naoki Sugano
IPC分类号： F15B9/08
CPC分类号： F15B9/08 , F15B11/044 , F15B21/047 , F15B2211/3116 , F15B2211/3157 , F15B2211/329 , F15B2211/353 , F15B2211/46 , F15B2211/7058 , F15B2211/75 , F15B2211/761 , F15B2211/8609
摘要： Provided is a hydraulic driving apparatus for a working machine, preventing an excessive decrease in pressure on a meter-in side and moving a load at a stable speed in a lowering direction. The apparatus comprises: a hydraulic pump; a hydraulic actuator; a manipulation device; a working hydraulic circuit including a meter-in flow passage and a meter-out flow passage; a control valve for changing a state of supply of hydraulic fluid to drive the hydraulic actuator at a speed designated by the manipulation device; a meter-in flow adjuster and a meter-out flow adjuster adapted to adjust a meter-in flow rate and meter-in flow rate respectively to respective value corresponding to the speed designated by the manipulation device; and a relief valve. The meter-in and meter-out flow adjusters have respective flow adjustment characteristics such that the meter-in flow rate is greater than the meter-out flow rate.
摘要翻译： 本发明提供一种用于工作机械的液压驱动装置，防止了进入侧的压力的过度降低，并且在下降方向上以稳定的速度移动负载。 该装置包括：液压泵; 液压执行器; 操纵装置; 工作液压回路，包括流入通道和流出通道; 控制阀，用于改变液压流体的供给状态，以由操纵装置指定的速度驱动液压致动器; 一个流入式流量调节器和一个流出量调节器，适用于分别将流量和流量流量调整到对应于由操纵装置指定的速度的相应值; 和安全阀。 输入和输出流量调节器具有相应的流量调节特性，使得流入流量大于流出流量。
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