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51. 发明授权

US07175155B2 Control valve apparatus and pressure circuit 有权
标题翻译：控制阀装置和压力回路
公开(公告)号：US07175155B2
公开(公告)日：2007-02-13
申请号：US11111754
申请日：2005-04-22
申请人： Kazuo Takiguchi , Masami Ochiai , Tsutomu Udagawa , Katsumi Ueno , Takashi Yagyu , Yukihiko Sugiyama , Mitsuo Aihara
发明人： Kazuo Takiguchi , Masami Ochiai , Tsutomu Udagawa , Katsumi Ueno , Takashi Yagyu , Yukihiko Sugiyama , Mitsuo Aihara
IPC分类号： F15B11/02
CPC分类号： F16K31/1245 , F15B11/003 , F15B11/042 , F15B11/044 , F15B2211/30515 , F15B2211/30525 , F15B2211/40515 , F15B2211/40584 , F15B2211/413 , F15B2211/41581 , F15B2211/428 , F15B2211/46 , F15B2211/7052 , F15B2211/7054
摘要： The control valve apparatus holds a seat valve member in a position seated on a valve seat to thereby prevent a backward flow even if the pressure in the inlet chamber side becomes lower than the pressure in the outlet chamber side. With a pilot control valve member is in a closed state, when the pressure in the inlet chamber is higher, a pressurized medium is introduced to the control pressure chamber via a first valve unit and is cut off from the outlet chamber by a second valve unit. When the pressure in the outlet chamber is higher, the pressurized medium is introduced to the control pressure chamber via the second valve unit and is cut off from the outlet chamber by the first valve unit.
摘要翻译：控制阀装置将座阀构件保持在座位上的位置，从而即使入口室侧的压力低于出口室侧的压力也能防止反向流动。当先导控制阀构件处于关闭状态时，当入口室中的压力较高时，加压介质经由第一阀单元被引入控制压力室，并通过第二阀单元从出口室切断。当出口室中的压力较高时，加压介质通过第二阀单元被引入控制压力室，并通过第一阀单元从出口室切断。

52. 发明授权

US06823289B2 Pump trouble diagnosing device for hydraulic drive device and display device of the diagnosing device 失效
标题翻译：诊断装置的液压驱动装置和显示装置的泵故障诊断装置
公开(公告)号：US06823289B2
公开(公告)日：2004-11-23
申请号：US10257013
申请日：2002-10-07
申请人： Hirotsugu Kasuya , Yutaka Watanabe , Masami Ochiai
发明人： Hirotsugu Kasuya , Yutaka Watanabe , Masami Ochiai
IPC分类号： G06F1500
CPC分类号： F04B51/00 , F04B23/06 , F04B49/00 , F04B49/002 , F04B49/065
摘要： Fault diagnosis of hydraulic pumps is made automatically during an actual operation of a working machine, particularly when there is a problem with horsepower limiting control of the hydraulic pumps. A controller 50 performs horsepower limiting control for a plurality of variable displacement hydraulic pumps 1 to 6. The controller 50 measures a pump delivery pressure and pump delivery rate of each hydraulic pump when the pump delivery rate reaches a maximum during operation of the hydraulic drive system based on their detected values, collects the measured values as fault diagnostic data, and then compares a calculated target pump delivery rate with the collected pump delivery rate to decide if there is a fault of the hydraulic pump.
摘要翻译：液压泵的故障诊断在工作机械的实际操作过程中自动进行，特别是当液压泵的马力限制控制存在问题时。控制器50对多个可变排量液压泵1〜6进行马力限制控制。控制器50在液压驱动系统的运行期间，当泵输送速度达到最大时，测量每个液压泵的泵输送压力和泵输送速度根据其检测值，将测量值作为故障诊断数据收集，然后将计算出的目标泵输送速率与收集的泵输送速率进行比较，以确定液压泵是否存在故障。

53. 发明授权

US06244048B1 Hydraulique drive device 失效
标题翻译：液压驱动装置
公开(公告)号：US06244048B1
公开(公告)日：2001-06-12
申请号：US09000222
申请日：1998-01-23
申请人： Sotaro Tanaka , Gen Yasuda , Masami Ochiai , Yusaku Nozawa , Hideyo Kato
发明人： Sotaro Tanaka , Gen Yasuda , Masami Ochiai , Yusaku Nozawa , Hideyo Kato
IPC分类号： F16D3102
CPC分类号： E02F9/2296 , E02F9/2242 , E02F9/2292
摘要： A hydraulic drive system for a supersized hydraulic working machine such as a hydraulic excavator includes hydraulic pumps connected to main lines through a delivery line and a supply line. Branch portions from the main line include flow control valves for allowing a hydraulic fluid to flow from the hydraulic pumps toward hydraulic cylinders. A hydraulic reservoir is connected to the main lines through a reservoir line and a drain line. Other branch portions for the drain line include flow control valves for allowing a hydraulic fluid to flow from the hydraulic cylinders toward the hydraulic reservoir. A line branched for the delivery line includes a bypass valve for supplying the hydraulic fluid delivered from the hydraulic pumps to the supply line at a desired flow rate and returning the remaining hydraulic fluid to the hydraulic reservoir.
摘要翻译：用于诸如液压挖掘机的超级液压工作机的液压驱动系统包括通过输送管线和供给管线连接到主线路的液压泵。来自主线的分支部分包括用于允许液压流体从液压泵流向液压缸的流量控制阀。液压油箱通过油藏管线和排油管线连接到主管线。用于排水管线的其他分支部分包括流量控制阀，用于允许液压流体从液压缸流向液压储存器。用于输送管线分支的管线包括旁通阀，用于以期望的流量将从液压泵输送的液压流体供应到供应管线，并将剩余的液压流体返回到液压储存器。

54. 发明授权

US5873245A Hydraulic drive system 失效
标题翻译：液压驱动系统
公开(公告)号：US5873245A
公开(公告)日：1999-02-23
申请号：US809048
申请日：1997-03-07
申请人： Hideyo Kato , Masami Ochiai
发明人： Hideyo Kato , Masami Ochiai
IPC分类号： E02F9/22 , F15B11/16
CPC分类号： F15B11/168 , E02F9/2225 , E02F9/2228 , E02F9/2285 , E02F9/2296 , F15B11/165 , F15B2211/20553 , F15B2211/255 , F15B2211/30555 , F15B2211/3111 , F15B2211/31576 , F15B2211/329 , F15B2211/351 , F15B2211/36 , F15B2211/40515 , F15B2211/41563 , F15B2211/428 , F15B2211/45 , F15B2211/50518 , F15B2211/5156 , F15B2211/56 , F15B2211/6052 , F15B2211/6316 , F15B2211/6346 , F15B2211/635 , F15B2211/6355 , F15B2211/7135
摘要： Pressure adjusting valves (9A, 9B) control outlet pressures of variable throttle portions (8a) of directional control valves (8A, 8B) of closed center type to be kept substantially equal to a maximum load pressure detected by a detecting line (13). A variable throttle valve (40) and a pressure adjusting valve (41) are disposed in a bypass line (5) branched from a pump supply line (3) for controlling an outlet pressure of the variable throttle valve (40) to be also kept substantially equal to the maximum load pressure. The variable throttle valve (40) has an opening area controlled to be reduced with an increase in the input amount by which a control lever unit is operated, and a pump delivery rate is controlled by a tilting control device (2n) to become a flow rate corresponding to the input amount of the control lever unit.
摘要翻译： PCT No.PCT / JP96 / 01888 Sec。 371日期1997年3月7日 102（e）1997年3月7日PCT PCT 1996年7月8日PCT公布。公开号WO97 / 03292 日期1997年1月30日压力调节阀（9A，9B）控制闭合中心型方向控制阀（8A，8B）的可变节流部分（8a）的出口压力基本上等于由检测到的最大负载压力行（13）。可变节流阀（40）和压力调节阀（41）设置在从泵供应管线（3）分支的旁路管线（5）中，用于控制可变节流阀（40）的出口压力也被保持基本上等于最大负载压力。可变节流阀（40）具有通过操作控制杆单元的输入量的增加而被控制的开口面积，并且泵输送速率由倾斜控制装置（2n）控制成流量对应于控制杆单元的输入量的速率。

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