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    • 1. 发明授权
    • Vibration control method and vibration control system for fluid pressure control circuit
    • 液压控制电路振动控制方法及振动控制系统
    • US07269947B2
    • 2007-09-18
    • US11299112
    • 2005-12-09
    • Kazunori Yoshino
    • Kazunori Yoshino
    • F16D31/02F15B13/04
    • F15B21/008F15B11/006F15B2211/30575F15B2211/6313F15B2211/7053F15B2211/8616
    • A first fluid channel for operating an actuator and a second fluid channel for operating an actuator are connected to a boom cylinder, including a boom rod side line, a boom head side line. A first and second supply line and a first and second discharge line of each of the first and second fluid channels, respectively, are connected to first and second meter-in control valve and first and second meter-out control valves, respectively. When the boom operating lever is returned an operating position to a neutral position, a pressure vibration generated in each fluid channel for operating the actuators is detected, and respective meter-in control valves and meter-out control valves are controlled to dampen the pressure vibration in each fluid channel.
    • 用于操作致动器的第一流体通道和用于操作致动器的第二流体通道连接到动臂液压缸,其包括动臂杆侧线,动臂头侧线。 第一和第二流体通道中的每一个的第一和第二供应管线和第一和第二排放管线分别连接到第一和第二进口控制阀以及第一和第二出口控制阀。 当动臂操作杆将工作位置返回到中立位置时,检测在每个流体通道中产生的用于操作致动器的压力振动,并且控制相应的计量控制阀和排出控制阀以抑制压力振动 在每个流体通道中。
    • 4. 发明申请
    • Power system and work machine using same
    • 电力系统和作业机使用相同
    • US20050103006A1
    • 2005-05-19
    • US10714171
    • 2003-11-14
    • Kazunori Yoshino
    • Kazunori Yoshino
    • E02F9/22F15B11/00F15B21/14F16D31/02
    • E02F9/2217E02F9/2207E02F9/2296F15B11/006F15B21/14F15B2211/20515F15B2211/20546F15B2211/26F15B2211/30575F15B2211/31576F15B2211/327F15B2211/45F15B2211/63F15B2211/6346F15B2211/6651F15B2211/7053F15B2211/88
    • Engineers are constantly seeking methods to reduce undesirable emissions, noise, and vibrations created by power systems. In the present invention, a power system includes at least one hydraulic cylinder that defines a first fluid volume and a second fluid volume separated from one another via a moveable plunger. Hydraulic power created within the hydraulic cylinder is converted to mechanical energy by a variable displacement hydraulic motor that is fluidly connected to at least the first fluid volume. A generator is attached to the variable displacement hydraulic motor, and produces electrical power that is stored in a power storage system. The stored power can be supplied to an electric motor that is operable to power a hydraulic pump. The hydraulic pump supplies hydraulic fluid to the hydraulic cylinder. The power system of the present invention is a relatively efficient alternative to a power system including a diesel engine that can be a source of undesirable emissions, noise and vibrations.
    • 工程师们一直在寻求减少由电力系统产生的不必要的排放,噪音和振动的方法。 在本发明中,电力系统包括至少一个限定第一流体体积的液压缸和通过可移动柱塞彼此分离的第二流体体积。 通过与至少第一流体体积流体连接的可变排量液压马达将液压缸内产生的液压动力转换为机械能。 发电机连接到可变排量液压马达,并产生存储在蓄电系统中的电力。 所存储的功率可以被提供给可操作以为液压泵供电的电动机。 液压泵向液压缸供应液压油。 本发明的电力系统是包括柴油发动机的动力系统的相对有效的替代方案,所述柴油发动机可以是不期望的排放物,噪声和振动的来源。
    • 5. 发明授权
    • Dynamically stable flow amplifying poppet valve
    • 动态稳定流量放大提升阀
    • US06557822B1
    • 2003-05-06
    • US09717574
    • 2000-11-21
    • Kazunori Yoshino
    • Kazunori Yoshino
    • F16K31363
    • F15B13/0407F15B13/0405Y10T137/8659
    • A flow amplifying poppet valve is useful in hydraulic circuits requiring low leakage when in a loaded condition. Undesirable pressure fluctuations effect the stability of the poppet. Tilting of the poppet valve within the bore increases friction that degrades repeatability. The subject invention provides a flow amplifying poppet valve that dampens valve oscillation caused by pressure fluctuations and provides for a constant guide length to prevent poppet valve tilting in the bore. The flow amplifying poppet valve assembly comprises a poppet valve slidably disposed within a bore that includes a poppet seat for engaging the valve seat to meter the flow of fluid between the inlet and the outlet. The poppet valve and bore have radially overlapping shoulders movable axially toward and away from each other to define a pressure chamber that accumulates fluid for dampening poppet valve oscillation.
    • 流量增加提升阀在负载状态下需要低泄漏的液压回路中是有用的。 不利的压力波动会影响提升阀的稳定性。 孔内提升阀的倾斜增加了降低重复性的摩擦力。 本发明提供一种流量放大提升阀,其抑制由压力波动引起的阀振荡,并提供恒定的引导长度以防止提升阀在孔中倾斜。 流动放大提升阀组件包括可滑动地设置在孔内的提升阀,该提升阀包括用于接合阀座以提供入口和出口之间的流体流的提升阀座。 提升阀和孔具有径向重叠的肩部,其可轴向移动并远离彼此,以限定积聚流体的压力室,以抑制提升阀振荡。
    • 7. 发明授权
    • Cylinder control unit
    • 气缸控制单元
    • US5163352A
    • 1992-11-17
    • US769836
    • 1991-10-02
    • Kazunori Yoshino
    • Kazunori Yoshino
    • E02F9/22F15B11/00F15B11/024
    • F15B11/024F15B2011/0243F15B2211/20546F15B2211/30505F15B2211/30525F15B2211/3058F15B2211/3116F15B2211/31576F15B2211/7107F15B2211/7128F15B2211/853F15B2211/8613Y10T137/88054
    • A buffer valve for a cylinder control unit includes a cylinder having first and second plungers each axially slidable in the cylinder with an intermediate piston disposed between the plungers and slidable in the cylinder with springs urging the plungers in the direction of the intermediately located piston; separate chambers are provided in the cylinder between the piston and the first and second plungers and second chambers are provided on the side of the plungers facing away from the piston; passages are provided in the first and second plungers for communicating between the first and second chambers on opposite sides of each plunger; a bypass passage connecting the first chambers for each plunger is provided with a check valve for allowing flow in only one direction from the first chamber of the first plunger to the first chamber of the second plunger so that when one of the plungers closes off communication between the bypass passage and the cylinder control unit, the check valve will prevent flow from the first chamber of the second piston.
    • 用于气缸控制单元的缓冲阀包括具有第一和第二柱塞的气缸,其具有可在气缸中轴向滑动的中间活塞,中间活塞设置在柱塞之间并且可在弹簧中滑动,弹簧沿着位于中间的活塞的方向推动柱塞; 在活塞和第一和第二柱塞之间的气缸中设置有分离的室,并且第二室设置在离开活塞的柱塞的侧面上; 通道设置在第一和第二柱塞中,用于在每个柱塞的相对侧上的第一和第二室之间连通; 连接每个柱塞的第一室的旁路通道设置有止回阀,该止回阀允许仅在从第一柱塞的第一室到第二柱塞的第一室的一个方向上流动,使得当其中一个柱塞闭合 旁通通道和气缸控制单元,止回阀将防止从第二活塞的第一室流出。