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公开(公告)号：US6161586A
公开(公告)日：2000-12-19
申请号：US267957
申请日：1999-03-12
申请人： Toichi Hirata , Genroku Sugiyama , Tsukasa Toyooka , Norio Onuma , Ikuo Inagaki , Masao Kashiwagi
发明人： Toichi Hirata , Genroku Sugiyama , Tsukasa Toyooka , Norio Onuma , Ikuo Inagaki , Masao Kashiwagi
CPC分类号： F15B13/0807 , F15B11/16 , F15B13/081 , F15B2211/20553 , F15B2211/3116 , F15B2211/329 , F15B2211/6355 , F15B2211/67 , F15B2211/71 , Y10T137/2567 , Y10T137/87185 , Y10T137/87885
摘要： A tournament oil path constituting apparatus in which while a laminated block is constituted by laminating a number of oil path plates, a number of shuttle valve holes and connection grooves made continuous to the shuttle valve holes are formed at overlap faces of the oil path plates, shuttle valves are integrated to the shuttle valve holes, introductory oil paths communicating with the shuttle valve holes are formed at both of the oil path plates formed with the shuttle valve holes and the oil path plates having match faces on sides of the shuttle valve holes and a high pressure oil is selected by the shuttle valves from pressure oils conducted both of the introductory oil paths and conducted to the connection grooves. The tournament oil path constituting apparatus also including a number of main paths penetrating the number of laminated oil path plates and branch grooves branched from the main paths.
摘要翻译： 一种比赛油路构成装置，其中，通过层叠多个油路板而构成层叠块，在油路板的重叠面形成有多个往复阀孔和与梭阀孔连续的连接槽， 梭阀集成到梭阀孔中，与形成有梭阀孔的两个油路板和在梭阀孔的侧面上具有匹配面的油路板形成与梭阀孔连通的引导油路， 高压油由穿梭阀由导入两个导入油路的压力油选择并传导到连接槽。 比赛油路构成装置还包括穿过层叠油路板的数量的主要路径和从主路径分支的分支槽。
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2.发明授权
公开(公告)号：US5930996A
公开(公告)日：1999-08-03
申请号：US164365
申请日：1998-10-01
申请人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
发明人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
CPC分类号： E02F9/2296 , E02F9/2235 , E02F9/2246 , E02F9/2282 , E02F9/2285 , E02F9/2292
摘要： In the arm-crowding or track operation, a calculating portion (700d2 or 700d4) calculates a modification gain (KAC or KTR) depending on an operation pilot pressure and a calculating portion (700g) calculates a decrease modification (DND) based on the KAC or KTR, while a calculating portion (700m or 700p) calculates a modification gain (KACH or KTRH) depending on an operation pilot pressure and calculating portions (700q-700s) calculate an increase modification (DNH) based on the KACH or KTRH. A reference target engine revolution speed NR0 is modified using the DND and DNH. In other operations than the arm-crowding and track operations, NR0 is modified using only the decrease modification (DND) calculated from the modification gain just depending on the operation pilot pressure. In the operation where an engine revolution speed is desired to become higher as an actuator load increases, the engine revolution speed can be controlled in accordance with change of the actuator load as well. In other operations, the engine revolution speed can be controlled just depending on the direction and input amount in and by which corresponding operation instructing apparatus is operated.
摘要翻译： 在手臂拥挤或轨道操作中，计算部分（700d2或700d4）根据操作先导压力计算修正增益（KAC或KTR），并且计算部分（700g）基于KAC计算减小修改（DND） 或KTR，而计算部分（700m或700p）根据操作先导压力计算修正增益（KACH或KTRH），并且计算部分（700q-700s）基于KACH或KTRH计算增加修改（DNH）。 使用DND和DNH修改参考目标发动机转速NR0。 在除了拥挤和跟踪操作之外的其他操作中，NR0仅使用根据操作先导压力从修改增益计算的减少修改（DND）进行修改。 在致动器负载增加时希望发动机转速变高的操作中，也可以根据致动器负载的变化来控制发动机转速。 在其他操作中，可以根据相应的操作指示装置的操作方向和输入量来控制发动机转速。
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公开(公告)号：US5479778A
公开(公告)日：1996-01-02
申请号：US352807
申请日：1994-12-01
CPC分类号： E02F9/2246 , E02F9/2296 , F15B11/024 , F15B2011/0243 , F15B2211/20523 , F15B2211/20546 , F15B2211/20576 , F15B2211/30505 , F15B2211/30525 , F15B2211/3058 , F15B2211/3116 , F15B2211/31576 , F15B2211/329 , F15B2211/40515 , F15B2211/41554 , F15B2211/428 , F15B2211/45 , F15B2211/575 , F15B2211/6309 , F15B2211/6346 , F15B2211/6651 , F15B2211/67 , F15B2211/75
摘要： When the pump pressure detected through a pressure detecting line 48 is raised higher than a first predetermined pressure Pd1, a recovery switching valve 44 is shifted to a valve-closed position to cease the recovery function. At this time, the pump delivery pressure detected through a pressure detecting line 51 is higher than a second predetermined pressure Pd1* close to the first predetermined pressure Pd1, and an engine speed increasing device 52 controls an engine controller 11 to increase the rotational speed of an engine 10, thereby increasing the pump delivery rate. Thus, it is possible to make small speed change of an actuator and to increase working efficiency with no deterioration in operability, even when a recovery function is ceased.
摘要翻译： 当通过压力检测线48检测到的泵压力升高到高于第一预定压力Pd1时，恢复切换阀44移动到阀关闭位置以停止恢复功能。 此时，通过压力检测线51检测到的泵输送压力高于接近第一规定压力Pd1的第二规定压力Pd1 *，发动机转速提高装置52控制发动机控制器11，使发动机控制器11的转速提高 发动机10，从而提高泵输送速率。 因此，即使恢复功能停止，也可以使致动器的变速小，提高工作效率，而不会劣化操作性。
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4.发明授权公开(公告)号：US06212886B1
公开(公告)日：2001-04-10
申请号：US09117682
申请日：1998-08-03
申请人： Genroku Sugiyama , Toichi Hirata , Tsukasa Toyooka
发明人： Genroku Sugiyama , Toichi Hirata , Tsukasa Toyooka
IPC分类号： F16D3102
CPC分类号： E02F9/2225 , E02F9/2285 , E02F9/2296 , F15B11/05 , F15B2211/30525 , F15B2211/3111 , F15B2211/329 , F15B2211/40515 , F15B2211/41563 , F15B2211/428 , F15B2211/45 , F15B2211/50527 , F15B2211/5159
摘要： A hydraulic drive system includes a closed center directional control valve connected to a hydraulic pump through a hydraulic fluid supply line and controlling a flow of a hydraulic fluid supplied to an actuator. A throttle and cutoff means for throttling and cutting off an unloading circuit depending on a operation amount of the directional control valve is installed in the unloading circuit interconnecting the hydraulic fluid supply line and a reservoir. The throttle and cutoff means comprises a logic valve including a feedback slit of which an opening area is increased and decreased depending on an amount by which a valve body is moved, and a pilot variable throttle for controlling a rate of a pilot flow passing the feedback slit depending on the operation amount of the directional control valve.
摘要翻译： 液压驱动系统包括通过液压流体供应管线连接到液压泵并控制供应到致动器的液压流体的流动的闭合中心方向控制阀。 根据方向控制阀的操作量来调节和切断卸载回路的节流阀和切断装置安装在将液压流体供给管路和储存器互连的卸载回路中。 节气门和切断装置包括一个逻辑阀，包括反馈狭缝，根据阀体的移动量，开口面积增加和减小，以及用于控制通过反馈的先导流速率的先导可变节流阀 根据方向控制阀的操作量而切割。
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5.发明授权Control system for prime mover and hydraulic pump of hydraulic construction machine 有权液压施工机械原动机和液压泵控制系统
公开(公告)号：US5911506A
公开(公告)日：1999-06-15
申请号：US166848
申请日：1998-10-06
申请人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
发明人： Kazunori Nakamura , Ei Takahashi , Tsukasa Toyooka , Kouji Ishikawa , Tsuyoshi Nakamura , Yoichi Kowatari , Tadatoshi Shimamura , Genroku Sugiyama , Toichi Hirata
CPC分类号： E02F9/2285 , E02F9/2235 , E02F9/2246 , E02F9/2282 , E02F9/2292 , E02F9/2296
摘要： A reference pump-delivery-rate calculating portion calculates a reference delivery rate of a hydraulic pump by referring to a table stored in a memory based on a control pilot pressure for the hydraulic pump. A target pump-delivery-rate calculating portion divides the reference delivery rate by a ratio of a maximum revolution speed to a target engine revolution speed, thereby calculating a target delivery rate. A target pump tilting calculating portion divides the target delivery rate by an actual engine revolution speed and a constant, thereby calculating a target tilting. A solenoid output current calculating portion calculates a drive current to provide the target tilting and outputs the drive current to a solenoid control valve. The pump delivery rate is thereby controlled with good response following input change of an operation instructing device.
摘要翻译： 参考泵送出速度计算部分基于用于液压泵的控制先导压力参考存储在存储器中的表来计算液压泵的参考输出速率。 目标泵输送速度计算部分将参考输出速率除以最大转速与目标发动机转速的比值，由此计算目标输送速率。 目标泵倾转计算部将目标输送速度除以实际发动机转速和常数，由此计算目标倾斜。 螺线管输出电流计算部分计算驱动电流以提供目标倾斜，并将驱动电流输出到电磁控制阀。 由此，在操作指示装置的输入变化之后，以良好的响应来控制泵送出速度。
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公开(公告)号：US5829252A
公开(公告)日：1998-11-03
申请号：US836664
申请日：1997-05-16
申请人： Toichi Hirata , Genroku Sugiyama , Tsukasa Toyooka
发明人： Toichi Hirata , Genroku Sugiyama , Tsukasa Toyooka
CPC分类号： E02F9/2242 , E02F9/2292 , E02F9/2296
摘要： Pump ports 9p, 10p, 11p, 13p of boom, arm, bucket and first travel directional control valves 9-11, 13 are connected to first and second hydraulic pumps 1a, 1b through feeder lines 93a, 93b; 103a, 103b; 113a, 113b; 133a, 133b. Auxiliary valves 91a, 91b; 101a, 101b; 111a, 101b; 131a, 131b controlled respectively by proportional solenoid valves 31a, 31b; 32a, 32b; 33a, 33b; 34a, 34b are disposed in those feeder lines. The auxiliary valves each have a function as a reverse-flow preventing function and a variable resisting function including a flow cutoff function, whereby a joining circuit and a preference circuit can be realized in the closed center circuit with a simple structure and further, a preference degree and metering characteristics can be set independently of each other during the combined operation of plural actuators.
摘要翻译： PCT No.PCT / JP96 / 02660 Sec。 371日期：1997年5月16日 102（e）日期1997年5月16日PCT提交1996年9月17日PCT公布。 公开号WO97 / 11278 日期1997年3月27日，臂，臂，铲斗和第一行进方向控制阀9-11,13的泵口9p，10p，11p，13p通过供给管线93a，93b连接到第一和第二液压泵1a，1b; 103a，103b; 113a，113b; 133a，133b。 辅助阀91a，91b; 101a，101b; 111a，101b; 131a，131b分别由比例电磁阀31a，31b控制; 32a，32b; 33a，33b; 34a，34b设置在那些馈线中。 辅助阀各自具有作为逆流防止功能和具有流动截止功能的可变阻力功能，由此可以以简单的结构在闭合中心电路中实现接合电路和偏好电路，此外，偏好 在多个致动器的组合操作期间，可以独立地设置度数和计量特性。
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公开(公告)号：US06220028B1
公开(公告)日：2001-04-24
申请号：US09204068
申请日：1998-12-03
申请人： Kouji Ishikawa , Toichi Hirata , Genroku Sugiyama , Tsukasa Toyooka , Tsuyoshi Nakamura , Yasuharu Gotou
发明人： Kouji Ishikawa , Toichi Hirata , Genroku Sugiyama , Tsukasa Toyooka , Tsuyoshi Nakamura , Yasuharu Gotou
IPC分类号： F16D3102
CPC分类号： E02F9/2296 , B60W2710/0644 , E02F9/2235 , E02F9/2246 , E02F9/26
摘要： A hydraulic drive system is provided with a signal guide system for guiding a delivery pressure of a pump as a command pressure via a line and a port, another signal guide system for guiding a pilot pressure of a pilot pump as another command pressure via a line and a port, a tilting control unit for controlling the displacement of the pump by the command pressures guided to the ports, a controller having a command current-setting unit for setting a relationship between a target engine speed and a command current, a target engine speed-indicating unit for an engine, and a solenoid-operated proportional valve for allowing the pilot pressure of the line to pass as is while no drive signal is outputted from the controller but for being reduced in opening to change the pilot pressure to a smaller value when a drive signal is outputted from the controller.
摘要翻译： 液压驱动系统设置有信号引导系统，用于经由管线和端口引导泵的输送压力作为指令压力，另一个信号引导系统用于通过管线引导先导泵的先导压力作为另一个指令压力 以及端口，倾斜控制单元，用于通过被引导到端口的指令压力来控制泵的排量;控制器，具有用于设定目标发动机转速和指令电流之间的关系的指令电流设定单元，目标发动机 用于发动机的速度指示单元和用于允许线路的先导压力在没有驱动信号从控制器输出但为了减小开启以将先导压力改变为更小的电磁比例阀 当从控制器输出驱动信号时的值。
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公开(公告)号：US5907951A
公开(公告)日：1999-06-01
申请号：US35334
申请日：1998-03-05
CPC分类号： E02F9/2296 , E02F9/2232 , E02F9/2285
摘要： A hydraulic control system according to the present invention for a construction machine is provided with a directional control valve switchable by a pilot control valve, a hydraulic cylinder, a pilot pump, a selector valve for selecting one of a maximum value out of pilot pressures of the pilot control valve, a flow control unit for controlling the flow rate of a variable displacement hydraulic pump, a pressure-reducing valve for converting a delivery pressure of the pilot pump to a pump control signal, which controls driving of the flow control unit, in accordance with a pilot pressure guided to a first signal line connected to the selector valve, a branch line connecting the pilot pump and the pressure-reducing valve with each other, and a second signal line for guiding the pump control signal, which has been converted at the pressure-reducing valve, to the flow control unit.
摘要翻译： 根据本发明的用于建筑机械的液压控制系统设置有可由先导控制阀，液压缸，先导泵，先导泵，选择阀切换的方向控制阀，用于从先导控制阀 先导控制阀，用于控制可变排量液压泵的流量的流量控制单元，用于将先导泵的输送压力转换为泵控制信号的减压阀，其控制流量控制单元的驱动， 根据引导到连接到选择阀的第一信号线的先导压力，连接先导泵和减压阀的分支管线和用于引导泵控制信号的第二信号线 在减压阀处转换到流量控制单元。
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公开(公告)号：US5673558A
公开(公告)日：1997-10-07
申请号：US596296
申请日：1996-02-13
CPC分类号： E02F9/2282 , E02F9/2228 , E02F9/2242 , E02F9/2285
摘要： For enabling a boom to be smoothly raised during the triple combined operation of boom-up, arm-crowd and bucket-crowd in a hydraulic circuit system for a hydraulic excavator, in a first valve group of a hydraulic valve apparatus (12), a variable throttle valve (70) is installed in a feeder passage (32) of a bucket directional control valve (21) downstream of a load check valve (32a), and a secondary pressure C as a boom-up operation command is introduced through a line (71) to a pilot control sector (70a) of the variable throttle valve (70) which sector operates in the throttling direction, so that when the secondary pressure C is 0 or small, the variable throttle valve (70) is fully opened and, as the secondary pressure C increases, an opening area of the variable throttle valve (70) is reduced to restrict the flow rate of a hydraulic fluid supplied through the bucket directional control valve (21).
摘要翻译： PCT No.PCT / JP95 / 01258 Sec。 371日期1996年2月13日 102（e）日期1996年2月13日PCT提交1995年6月23日PCT公布。 公开号WO96 / 00820 日期1996年1月11日为了在液压挖掘机的液压回路系统中，在液压阀装置的第一阀组中，在起重臂，悬臂和斗斗的三重组合操作期间能够平稳地升高起重臂 （12）中，可变节流阀（70）安装在负载止回阀（32a）下游的铲斗方向控制阀（21）的供给通路（32）中，作为动臂上升操作的二次压力C 命令通过管线（71）引导到可变节流阀（70）的先导控制扇区（70a），该扇区在节流方向上操作，使得当二次压力C为0或小时，可变节流阀 70）完全打开，并且随着二次压力C增加，可变节流阀（70）的开口面积减小以限制通过铲斗方向控制阀（21）供给的液压流体的流量。
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公开(公告)号：US06619037B1
公开(公告)日：2003-09-16
申请号：US09889612
申请日：2001-07-19
申请人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kouji Ishikawa , Masao Nishimura , Tsuyoshi Nakamura
发明人： Tsukasa Toyooka , Toichi Hirata , Genroku Sugiyama , Kouji Ishikawa , Masao Nishimura , Tsuyoshi Nakamura
IPC分类号： F16D3102
CPC分类号： E02F9/2267 , E02F9/2239 , E02F9/2242 , E02F9/2271 , E02F9/2292
摘要： Provided are hydraulic pumps 1,2, a control valve group 15a connected to the pump 1 and including a bypass on/off valve 7, a control valve group 15b connected to the pump 2 and including a reserve-actuator-controlling, directional control valve 11, a communication line 13 communicating a most upstream side of the control valve group 15a with a supply line 11a to the reserve-actuator-controlling, directional control valve 11, a merge control valve 14 for communicating or cutting off the communication line 13, an interlocked control means for changing over the merge control valve 14 to an open position and the bypass on/off valve 7 to a closed position in association with a change-over operation of the reserve-actuator-controlling, directional control valve 11, and a selective control valve 28 capable of taking one of a state, in which the operation to change over the merge control valve 14 by the interlocked control means is feasible, and another state in which the operation to change over the merge control valve by the interlocked control means is infeasible. The control valve group 15a, the control valve group 15b, the communication line 13 and the merge control valve 14 are arranged in a housing 15 such that a change or the like in a maximum value of an operating speed of an actuator, said operating speed being controlled by the reserve directional control valve, can be achieved.
摘要翻译： 设有液压泵1,2，与泵1连接并包括旁通开闭阀7的控制阀组15a，连接到泵2的控制阀组15b，并且包括备用执行器控制方向控制阀 如图11所示，将控制阀组15a的最上游侧与供给管线11a连通的通信线路13配置到备用执行器控制用方向控制阀11，连通或切断通信线路13的合流控制阀14， 联合控制装置，用于将合并控制阀14转换到打开位置，旁路开/关阀7与备用执行器控制方向控制阀11的转换操作相关联地转换到关闭位置，以及 选择控制阀28，其能够采用其中一个状态，其中通过互锁控制装置切换合并控制阀14的操作是可行的;以及另一种状态，其中改变o的操作 通过互锁控制装置检查合并控制阀是不可行的。 控制阀组15a，控制阀组15b，连通管线13和合并控制阀14布置在壳体15中，使得在致动器的操作速度的最大值中的变化等，所述操作速度 由备用方向控制阀控制，可以实现。
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