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。

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

IPC分类号： B60K25/02 ,  E02F9/22 ,  F02D29/04 ,  F04B49/00 ,  F16D31/02

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。

公开(公告)号：US5907951A

公开(公告)日：1999-06-01

申请号：US35334

申请日：1998-03-05

申请人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

发明人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

IPC分类号： F04B49/00 ,  E02F9/22 ,  F04B1/26 ,  F16D31/02

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。

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。

公开(公告)号：US5940997A

公开(公告)日：1999-08-24

申请号：US145158

申请日：1998-09-01

申请人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kazunori Nakamura ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

发明人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Kazunori Nakamura ,  Kouji Ishikawa ,  Tsuyoshi Nakamura

IPC分类号： E02F9/22

CPC分类号： E02F9/2267 ,  E02F9/2221 ,  E02F9/2232 ,  E02F9/2242 ,  E02F9/2271 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296

摘要： A hydraulic circuit system includes a shuttle block, and shuttle valves are arranged and connected within the shuttle block. The maximum pressure in a predetermined operation signal pressure group selected from operation signal pressures generated by pilot operating units is selected to produce a control signal pressure within the shuttle block. The control signal pressure is output to control devices such as a track communicating valve, a swing brake cylinder, and regulators for hydraulic pumps.

摘要翻译： 一个液压回路系统包括一个梭子块，并且梭阀布置并连接在梭子块内。 从由先导操作单元产生的操作信号压力中选择的预定操作信号压力组中的最大压力被选择以产生梭模块内的控制信号压力。 控制信号压力输出到诸如轨道连通阀，回转制动缸和液压泵调节器之类的控制装置。

公开(公告)号：US5813311A

公开(公告)日：1998-09-29

申请号：US771158

申请日：1996-12-20

申请人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Kouji Ishikawa ,  Youichi Kowatari ,  Tsuyoshi Nakamura

发明人： Tsukasa Toyooka ,  Toichi Hirata ,  Genroku Sugiyama ,  Shigehiro Yoshinaga ,  Kouji Ishikawa ,  Youichi Kowatari ,  Tsuyoshi Nakamura

IPC分类号： E02F9/20 ,  E02F9/22 ,  F15B11/16

CPC分类号： E02F9/2285 ,  E02F9/2228 ,  E02F9/2282

摘要： A controller 520 has a data portion 520c in which the relationship between a pump delivery pressure and a target opening area of a variable throttle 300a of a control valve 300 is set such that the target opening area is large when the pump delivery pressure is low, and small when the pump delivery pressure is high. An input portion 520a takes in a detection signal from a pump pressure sensor 700, a processing portion 520b reads the data from the data portion 520c and calculates a signal output to a solenoid proportional valve 590, and an output portion 520d converts the calculated signal into a command signal for the solenoid proportional valve 590 and outputs the command signal. Upon receiving the command signal from the controller 520, the solenoid proportional valve 590 produces a command pilot pressure for the control valve 300 corresponding to the input signal and controls the opening area of the variable throttle 300a.

摘要翻译： 控制器520具有数据部分520c，其中泵输送压力和控制阀300的可变节流阀300a的目标开口面积之间的关系被设定为当泵输送压力低时目标开口面积大， 并且当泵输送压力高时小。 输入部分520a从泵压力传感器700接收检测信号，处理部分520b从数据部分520c读取数据，并计算输出到电磁比例阀590的信号，输出部分520d将计算出的信号转换成 用于电磁比例阀590的命令信号并输出​​命令信号。 电磁比例阀590从控制器520接收到指令信号时，根据输入信号产生控制阀300的指令先导压力，并控制可变节流阀300a的开度面积。

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

IPC分类号： E02F9/22 ,  F15B11/00 ,  E02F9/20

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。

公开(公告)号：US5848531A

公开(公告)日：1998-12-15

申请号：US774725

申请日：1997-01-03

申请人： Tsuyoshi Nakamura ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari ,  Kouji Ishikawa

发明人： Tsuyoshi Nakamura ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari ,  Kouji Ishikawa

IPC分类号： E02F9/22 ,  F15B11/028 ,  F16D31/02

CPC分类号： E02F9/2282 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2296

摘要： A hydraulic system for a construction machine includes a hydraulic pump driven by a prime mover, actuators driven by a hydraulic fluid delivered from the hydraulic pump, flow control valves for controlling flow of the hydraulic fluid to the actuators and operation means for operating the flow control valves. A relief value sets a relief pressure for limiting the maximum delivery pressure of the hydraulic pump and relief pressure change means increase or decrease the relief pressure set by the relief valve. The relief pressure change means automatically increase or decrease the relief pressure in accordance with the input amount of the operation means.

摘要翻译： 用于建筑机械的液压系统包括由原动机驱动的液压泵，由从液压泵输送的液压流体驱动的致动器，用于控制液压流体到致动器的流量控制阀和用于操作流量控制的操作装置 阀门 释放值设定用于限制液压泵的最大输送压力的溢流压力，溢流压力改变装置增加或减少由安全阀设定的溢流压力。 溢流压力改变装置根据操作装置的输入量自动增加或减小溢流压力。

公开(公告)号：US6101456A

公开(公告)日：2000-08-08

申请号：US817489

申请日：1997-04-15

申请人： Youichi Kowatari ,  Toichi Hirata ,  Hidefumi Takegahara ,  Tsukasa Toyooka ,  Kouji Ishikawa ,  Genroku Sugiyama ,  Shigehiro Yoshinaga

发明人： Youichi Kowatari ,  Toichi Hirata ,  Hidefumi Takegahara ,  Tsukasa Toyooka ,  Kouji Ishikawa ,  Genroku Sugiyama ,  Shigehiro Yoshinaga

IPC分类号： E02F9/20 ,  E02F9/22 ,  F04B49/00 ,  F04B49/06 ,  F15B11/00 ,  F15B11/02 ,  G05B11/36 ,  G05B13/02 ,  G05B13/00

CPC分类号： G05B13/0265 ,  E02F9/2025 ,  E02F9/2235 ,  F04B49/065

摘要： A control system wherein a reverse characteristic having a reverse input/output relationship to a target input/output characteristic of a control object, is preset, and a target value for an output of the control object is calculated. A command signal corresponding to the target value then is determined based on the preset reverse characteristic, and the command signal is output to the control object. The control system includes first means for calculating a command signal corresponding to a given target value for the output of the control object based on the preset reverse characteristic, outputting the command signal to the control object, measuring an output of the control object and estimating a deviation between an actual input/output characteristic of the control object and the target input/output characteristic therefor, and storing data on the deviation between the input/output characteristics as learning correction data. The control system further includes second means for reading out the stored learning correction data and correcting the command signal using the learning correction data.

摘要翻译： PCT No.PCT / JP96 / 02517 Sec。 371日期1997年04月15日 102（e）日期1997年04月15日PCT 1996年9月5日提交的一种控制系统，其中具有与控制对象的目标输入/输出特性相反的输入/输出关系的反向特性被预先设定， 计算控制对象的输出。 基于预设的反向特性来确定与目标值相对应的命令信号，并且将命令信号输出到控制对象。 控制系统包括：第一装置，用于基于预设的反向特性来计算对应于控制对象的输出的给定目标值的命令信号，向控制对象输出命令信号，测量控制对象的输出并估计一个 控制对象的实际输入/输出特性与其目标输入/输出特性之间的偏差，并且存储关于输入/输出特性之间的偏差的数据作为学习校正数据。 控制系统还包括用于读出所存储的学习校正数据并使用学习校正数据校正命令信号的第二装置。

公开(公告)号：US5890303A

公开(公告)日：1999-04-06

申请号：US774703

申请日：1996-12-26

申请人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari

发明人： Kouji Ishikawa ,  Toichi Hirata ,  Genroku Sugiyama ,  Tsukasa Toyooka ,  Youichi Kowatari

IPC分类号： E02F9/22 ,  F15B11/16 ,  E02F5/02

CPC分类号： E02F9/2282 ,  E02F9/2242 ,  E02F9/2292

摘要： A pilot pressure sensor detects a pilot pressure from an arm operating unit and outputs a pilot pressure signal. A drive signal corresponding to the pilot pressure signal is then outputted from a controller to a solenoid-operated proportional valve. Through the solenoid-operated proportional valve, a pilot pressure is fed to an auxiliary selector valve so that an opening of said auxiliary selector valve becomes greater. Of pressure oil delivered from a first hydraulic pump, a flow rate of the pressure oil to be branched to a side of a by-pass circuit is hence increased. The pressure oil fed through the by-pass circuit passes through a merging directional control valve and is caused to merge with pressure oil fed from a second hydraulic pump. The thus-merged pressure oil is then fed to a hydraulic arm cylinder.

摘要翻译： 先导压力传感器检测来自臂操作单元的先导压力并输出先导压力信号。 然后将与先导压力信号对应的驱动信号从控制器输出到电磁比例阀。 通过电磁比例阀，先导压力被供给辅助选择阀，使得所述辅助选择阀的开度变大。 从第一液压泵输送的压力油中，因此分支到旁通回路侧的压力油的流量增加。 通过旁通回路供给的压力油通过合流方向控制阀，并与从第二液压泵供给的压力油合并。 然后将这样合并的压力油送入液压臂缸。