公开(公告)号：US5488787A

公开(公告)日：1996-02-06

申请号：US284410

申请日：1994-08-03

申请人： Yukio Aoyagi ,  Kazuhiko Otsubo ,  Gen Yasuda ,  Koji Fujita ,  Takayuki Yamakawa ,  Kazuyoshi Narita

发明人： Yukio Aoyagi ,  Kazuhiko Otsubo ,  Gen Yasuda ,  Koji Fujita ,  Takayuki Yamakawa ,  Kazuyoshi Narita

IPC分类号： E02F9/22 ,  F16D31/02 ,  G06F15/20

CPC分类号： E02F9/226 ,  E02F9/2217 ,  E02F9/2246

摘要： When a prime mover (1) is driven, a controller (25) outputs an open-drive signal for bringing an opening/shutting valve (23) into an open position and, upon a control lever (68, etc.) being operated, a hydraulic fluid is supplied from an auxiliary hydraulic pump (7) through pressure reducing valves to driving sectors of directional control valves (8 to 16) for shifting them. A flow rate and a direction of flow of the hydraulic fluid from main hydraulic pumps (3, 4) are thereby adjusted so that actuators (57A, 57B, 57C, 56A, 54) can be each operated at a speed depending on the amount by which the control lever is operated. When one of the actuators (57A, 57B, 57C, 56A, 54) is to be driven when the prime mover (1) is not driven, an open command is selected in a selection command device (24), whereupon the controller (25) outputs the open-drive signal, causing the opening/shutting valve (23) to open a line interconnecting the accumulator (21) and the pressure reducing valve (17), etc. By now operating the control lever (68), for example, the directional control valve (9) is shifted so that a boom cylinder (57A) is operated with the dead weight of a working unit to allow a descent thereof. When any of the actuators (57A, 57B, 57C, 56A, 54) is not to be driven when the prime mover (1) is in a stopped state, a shut command is selected in the selection command device (24), whereupon the controller (25) outputs a shut-drive signal, causing the opening/shutting valve (23) to shut off the line interconnecting the accumulator (21) and the pressure reducing valve (17). Even if the control lever (68), etc. are touched by a mistake under such a condition, no actuators (57A, 57B, 57C, 56A, 54) are operated and the working unit is not descended. Thus, the actuators are surely prevented from being operated against the intention of an operator.

公开(公告)号：US5056312A

公开(公告)日：1991-10-15

申请号：US449845

申请日：1989-11-22

申请人： Toichi Hirata ,  Genroku Sugiyama ,  Yusuke Kajita ,  Yukio Aoyagi ,  Tomohiko Yasudi ,  Gen Yasuda ,  Hiroshi Watanabe ,  Eiki Izumi ,  Yasuo Tanaka ,  Hiroshi Onoue ,  Shigetaka Nakamura

发明人： Toichi Hirata ,  Genroku Sugiyama ,  Yusuke Kajita ,  Yukio Aoyagi ,  Tomohiko Yasudi ,  Gen Yasuda ,  Hiroshi Watanabe ,  Eiki Izumi ,  Yasuo Tanaka ,  Hiroshi Onoue ,  Shigetaka Nakamura

IPC分类号： E02F9/22 ,  F15B11/16 ,  F15B21/08

CPC分类号： F15B21/087 ,  E02F9/2228 ,  E02F9/2235 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/163 ,  F04B2205/05 ,  F04B2207/01 ,  F15B2211/20553 ,  F15B2211/25 ,  F15B2211/30535 ,  F15B2211/3111 ,  F15B2211/40515 ,  F15B2211/40569 ,  F15B2211/428 ,  F15B2211/455 ,  F15B2211/6052 ,  F15B2211/6309 ,  F15B2211/6313 ,  F15B2211/6355 ,  F15B2211/65 ,  F15B2211/6653 ,  F15B2211/6654 ,  F15B2211/71 ,  F15B2211/78

摘要： A hydraulic system for a construction machine comprising plural hydraulic actuators (23-28) driven by fluid supplied from a pump (22), first and second flow control valves (29-34) for controlling flows of fluid supplied to the first and second actuators, and first and second distribution compensating valves (35-40) for controlling first differential pressure (.DELTA.P v1-.DELTA.P v6) produced between inlets and outlets of the first and second flow control valves. The first and second distribution compensating valves have respective drives (45-50, 35c-40c) for applying control forces (Fc1-Fc2) in accordance with the second differential pressure to the associated distribution compensating valves, to thereby set target values of the first differential pressures. The hydraulic system includes first means (59) for detecting the second differential pressure (.DELTA.P LS) from the discharge pressure (P s) of the pump (22) and the maximum load pressure (P amax) out of the first and second actuators; second means (61) for calculating individual values (Fc1-Fc6), as values of the control forces applied from the drives (45-50, 35C-40C) of the first and second distribution compensating valves (35-40), in accordance with at least the second differential pressure detected by the first means; and first and second control pressure generators (62a-62f) provided in association with the first and second distribution compensating valves. The first and second control pressure generators (62a-62f) produce control pressures (P c1-P c6) dependent on the individual values obtained by the second means and output the control pressures to the drives (35c-40c) of the first and second distribution compensating valves.

公开(公告)号：US20070193263A1

公开(公告)日：2007-08-23

申请号：US10594083

申请日：2005-02-18

申请人： Saimon Otaka ,  Yoshinori Ohwada ,  Gen Yasuda ,  Kenji Kakizawa

发明人： Saimon Otaka ,  Yoshinori Ohwada ,  Gen Yasuda ,  Kenji Kakizawa

IPC分类号： F16D31/02

CPC分类号： F04B17/05 ,  E02F9/2235 ,  F04B49/065

摘要： The present invention includes: a displacement altering means 4 for generating a displacement control pressure P corresponding to a displacement control signal i; an input means 12 for inputting a target displacement θ; a pressure calculating means 10 for calculating a displacement control pressure P corresponding to the target displacement θ based upon predetermined reference characteristics of the displacement altering means 4; a pressure detecting means 5 for detecting a pressure Pa corresponding to the displacement control pressure P; a signal calculating means 10 for calculating a displacement control signal i corresponding to the input target displacement θ; and a correcting means 10 for correcting the displacement control signal calculated by the signal calculating means 10 based upon the displacement control pressure P having been calculated by the pressure calculating means 10 and the measured pressure Pa detected by the pressure detecting means 5.

摘要翻译： 本发明包括：位移改变装置4，用于产生对应于位移控制信号i的位移控制压力P; 用于输入目标位移θ的输入装置12; 压力计算装置10，用于基于位移改变装置4的预定参考特性来计算对应于目标位移θ的位移控制压力P; 用于检测与位移控制压力P相对应的压力Pa的压力检测装置5; 信号计算装置10，用于计算对应于输入目标位移θ的位移控制信号i; 以及校正装置10，用于基于由压力计算装置10计算的位移控制压力P和由压力检测装置5检测到的测量压力Pa，校正由信号计算装置10计算的位移控制信号。

公开(公告)号：US08136355B2

公开(公告)日：2012-03-20

申请号：US12159163

申请日：2006-12-18

申请人： Gen Yasuda ,  Akihide Yamazaki

发明人： Gen Yasuda ,  Akihide Yamazaki

IPC分类号： F16D31/02

CPC分类号： E02F9/2242 ,  F04C14/065

摘要： A pump control apparatus for a hydraulic work machine includes: a rotation speed setting device that sets a target rotation speed for an engine; a rotation speed control device that controls an engine rotation speed so as to adjust the engine rotation speed to the target rotation speed; a first variable hydraulic pump used to drive a work hydraulic actuator, driven by the engine; a second variable hydraulic pump used to drive a cooling fan, driven by the engine; and a pump control device that controls an output flow rate of the first variable hydraulic pump and an output flow rate of the second variable hydraulic pump so as to ensure that a sum of an intake torque of the first variable hydraulic pump and an intake torque of the second variable hydraulic pump does not exceed an engine output torque determined in advance based upon the target rotation speed. The pump control device a) controls the output flow rate of the second variable hydraulic pump based upon the target rotation speed and a target output flow rate of the second variable hydraulic pump assuring a required cooling air volume at the cooling fan; and b) regulates the intake torque of the first variable hydraulic pump by calculating the intake torque of the second variable hydraulic pump and subtracting the intake torque of the second variable hydraulic pump from the engine output torque determined in advance based upon the target rotation speed.

摘要翻译： 一种液压作业机械的泵控制装置，具备：设定发动机的目标转速的转速设定装置; 旋转速度控制装置，其控制发动机转速，以将发动机转速调整为目标转速; 用于驱动由发动机驱动的工作液压致动器的第一可变液压泵; 用于驱动由发动机驱动的冷却风扇的第二可变液压泵; 以及泵控制装置，其控制第一可变液压泵的输出流量和第二可变液压泵的输出流量，以确保第一可变液压泵的进气转矩与进气转矩之和的总和 第二可变液压泵不超过基于目标转速预先确定的发动机输出扭矩。 泵控制装置a）基于目标转速和第二可变液压泵的目标输出流量来控制第二可变液压泵的输出流量，确保冷却风扇所需的冷却风量; 以及b）通过计算第二可变液压泵的进气转矩并根据目标转速​​预先确定的发动机输出转矩减去第二可变液压泵的进气转矩来调节第一可变液压泵的进气扭矩。

公开(公告)号：US20100218494A1

公开(公告)日：2010-09-02

申请号：US12159163

申请日：2006-12-18

申请人： Gen Yasuda ,  Akihide Yamazaki

发明人： Gen Yasuda ,  Akihide Yamazaki

IPC分类号： F16D31/02

CPC分类号： E02F9/2242 ,  F04C14/065

摘要： A pump control apparatus for a hydraulic work machine includes: a rotation speed setting device that sets a target rotation speed for an engine; a rotation speed control device that controls an engine rotation speed so as to adjust the engine rotation speed to the target rotation speed; a first variable hydraulic pump used to drive a work hydraulic actuator, driven by the engine; a second variable hydraulic pump used to drive a cooling fan, driven by the engine; and a pump control device that controls an output flow rate of the first variable hydraulic pump and an output flow rate of the second variable hydraulic pump so as to ensure that a sum of an intake torque of the first variable hydraulic pump and an intake torque of the second variable hydraulic pump does not exceed an engine output torque determined in advance based upon the target rotation speed. The pump control device a) controls the output flow rate of the second variable hydraulic pump based upon the target rotation speed and a target output flow rate of the second variable hydraulic pump assuring a required cooling air volume at the cooling fan; and b) regulates the intake torque of the first variable hydraulic pump by calculating the intake torque of the second variable hydraulic pump and subtracting the intake torque of the second variable hydraulic pump from the engine output torque determined in advance based upon the target rotation speed.

摘要翻译： 一种液压作业机械的泵控制装置，具备：设定发动机的目标转速的转速设定装置; 旋转速度控制装置，其控制发动机转速，以将发动机转速调整为目标转速; 用于驱动由发动机驱动的工作液压致动器的第一可变液压泵; 用于驱动由发动机驱动的冷却风扇的第二可变液压泵; 以及泵控制装置，其控制第一可变液压泵的输出流量和第二可变液压泵的输出流量，以确保第一可变液压泵的进气转矩与进气转矩之和的总和 第二可变液压泵不超过基于目标转速预先确定的发动机输出扭矩。 泵控制装置a）基于目标转速和第二可变液压泵的目标输出流量来控制第二可变液压泵的输出流量，确保冷却风扇所需的冷却风量; 以及b）通过计算第二可变液压泵的进气转矩并根据目标转速​​预先确定的发动机输出转矩减去第二可变液压泵的进气转矩来调节第一可变液压泵的进气扭矩。

公开(公告)号：US07020553B2

公开(公告)日：2006-03-28

申请号：US10500032

申请日：2003-08-25

申请人： Kazunori Nakamura ,  Toichi Hirata ,  Yasushi Arai ,  Yoichi Kowatari ,  Gen Yasuda ,  Hiroshi Watanabe

发明人： Kazunori Nakamura ,  Toichi Hirata ,  Yasushi Arai ,  Yoichi Kowatari ,  Gen Yasuda ,  Hiroshi Watanabe

IPC分类号： F04B49/06 ,  F04B49/00 ,  F02D29/04

CPC分类号： F02D29/04 ,  F04B17/05 ,  F04B49/002 ,  F04B49/065 ,  F04B2201/1202 ,  F15B11/165 ,  F15B11/167 ,  F15B2211/20523 ,  F15B2211/20553 ,  F15B2211/20584 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/50536 ,  F15B2211/50563 ,  F15B2211/575 ,  F15B2211/6054 ,  F15B2211/63 ,  F15B2211/6355 ,  F15B2211/66 ,  F15B2211/71 ,  F15B2211/865 ,  F15B2211/88

摘要： A machine body controller 70A includes a modification control unit 70Ab for computing a torque modification value based on detected signals from environment sensors 75 to 83, and modifies a maximum absorption torque of a hydraulic pump controlled by a basic control unit 70Aa. An engine controller 70B includes a modification control unit 70Bb for computing an injection modification value based on detected the signals from the environment sensors 75 to 83, and modifies a fuel injection state of a fuel injection device 14 controlled by a basic control unit 70Ba. The controllers 70A, 70B further include computation element altering units 171, 181. A communication controller 70C downloads alteration data obtained from an external terminal 150 to the computation element altering units 171, 181, whereby corresponding computation elements contained in the modification control units 70Ab, 70Bb are altered. As a result, it is possible in any environments to approprately modify the maximum absorption torque of the hydraulic pump and the fuel injection state of the injection device, and to sufficiently develop the performance of a construction machine.

摘要翻译： 机体控制器70A包括：修改控制单元70 Ab，用于基于来自环境传感器75至83的检测信号计算扭矩修正值，并修改由基本控制单元70Aa控制的液压泵的最大吸收扭矩。 发动机控制器70B包括用于基于检测到来自环境传感器75至83的信号计算喷射修改值的修改控制单元70Bb，并且修改由基本控制单元70控制的燃料喷射装置14的燃料喷射状态 巴 控制器70A，70B还包括计算元件改变单元171,181.通信控制器70C将从外部终端150获得的改变数据下载到计算元件改变单元171,181，由此包含在修改控制中的对应的计算元素 单位70 Ab，70 Bb被改变。 因此，可以在任何环境中适当地修改液压泵的最大吸收扭矩和注射装置的燃料喷射状态，并且充分发展施工机械的性能。

公开(公告)号：US07979229B2

公开(公告)日：2011-07-12

申请号：US10594083

申请日：2005-02-18

申请人： Saimon Otaka ,  Yoshinori Ohwada ,  Gen Yasuda ,  Kenji Kakizawa

发明人： Saimon Otaka ,  Yoshinori Ohwada ,  Gen Yasuda ,  Kenji Kakizawa

IPC分类号： G01L27/00

CPC分类号： F04B17/05 ,  E02F9/2235 ,  F04B49/065

摘要： The present invention includes: a displacement altering unit for generating a displacement control pressure corresponding to a displacement control signal; an input unit for inputting a target displacement; a pressure calculating unit for calculating a displacement control pressure corresponding to the target displacement based upon predetermined reference characteristics of the displacement altering unit; a pressure detecting unit for detecting a pressure corresponding to the displacement control pressure; a signal calculating unit for calculating a displacement control signal corresponding to the input target displacement; and a correcting unit for correcting the displacement control signal calculated by the signal calculating unit based upon the displacement control pressure having been calculated by the pressure calculating unit and the measured pressure detected by the pressure detecting unit.

摘要翻译： 本发明包括：位移改变单元，用于产生与位移控制信号相对应的位移控制压力; 用于输入目标位移的输入单元; 压力计算单元，用于基于所述位移改变单元的预定参考特性来计算与所述目标位移相对应的位移控制压力; 用于检测与所述位移控制压力相对应的压力的压力检测单元; 信号计算单元，用于计算与输入目标位移相对应的位移控制信号; 以及校正单元，用于基于由压力计算单元计算的位移控制压力和由压力检测单元检测到的测量压力来校正由信号计算单元计算的位移控制信号。

公开(公告)号：US20050071064A1

公开(公告)日：2005-03-31

申请号：US10500032

申请日：2003-08-25

申请人： Kazunori Nakamura ,  Toichi Hirata ,  Yasushi Arai ,  Yoichi Kowatari ,  Gen Yasuda ,  Hiroshi Watanabe

发明人： Kazunori Nakamura ,  Toichi Hirata ,  Yasushi Arai ,  Yoichi Kowatari ,  Gen Yasuda ,  Hiroshi Watanabe

IPC分类号： F04B17/05 ,  F04B49/00 ,  F04B49/06 ,  F15B11/16 ,  G06F7/70

CPC分类号： F02D29/04 ,  F04B17/05 ,  F04B49/002 ,  F04B49/065 ,  F04B2201/1202 ,  F15B11/165 ,  F15B11/167 ,  F15B2211/20523 ,  F15B2211/20553 ,  F15B2211/20584 ,  F15B2211/30505 ,  F15B2211/30525 ,  F15B2211/3056 ,  F15B2211/3116 ,  F15B2211/31576 ,  F15B2211/329 ,  F15B2211/50536 ,  F15B2211/50563 ,  F15B2211/575 ,  F15B2211/6054 ,  F15B2211/63 ,  F15B2211/6355 ,  F15B2211/66 ,  F15B2211/71 ,  F15B2211/865 ,  F15B2211/88

摘要： A machine body controller 70A includes a modification control unit 70Ab for computing a torque modification value based on detected signals from environment sensors 75 to 83, and modifies a maximum absorption torque of a hydraulic pump controlled by a basic control unit 70Aa. An engine controller 70B includes a modification control unit 70Bb for computing an injection modification value based on detected the signals from the environment sensors 75 to 83, and modifies a fuel injection state of a fuel injection device 14 controlled by a basic control unit 70Ba. The controllers 70A, 70B further include computation element altering units 171, 181. A communication controller 70C downloads alteration data obtained from an external terminal 150 to the computation element altering units 171, 181, whereby corresponding computation elements contained in the modification control units 70Ab, 70Bb are altered.

摘要翻译： 机体控制器70A包括：修改控制单元70Ab，用于基于来自环境传感器75至83的检测信号计算扭矩修正值，并修改由基本控制单元70Aa控制的液压泵的最大吸收扭矩。 发动机控制器70B包括用于基于检测到来自环境传感器75至83的信号来计算喷射修改值的修改控制单元70Bb，并且修改由基本控制单元70Ba控制的燃料喷射装置14的燃料喷射状态。 控制器70A，70B还包括计算元件改变单元171,181。通信控制器70C将从外部终端150获得的改变数据下载到计算元件改变单元171,181，由此包含在修改控制单元70Ab中的对应的计算元素， 70Bb被改变。

公开(公告)号：US5289679A

公开(公告)日：1994-03-01

申请号：US956493

申请日：1993-01-05

申请人： Gen Yasuda

发明人： Gen Yasuda

IPC分类号： E02F9/22 ,  F15B11/16 ,  F16D31/00 ,  F16D33/00

CPC分类号： E02F9/2285 ,  E02F9/2232 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/163 ,  F15B2211/20553 ,  F15B2211/30535 ,  F15B2211/31529 ,  F15B2211/6054 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/6346

摘要： A hydraulic drive system for a construction machine comprising a plurality of distribution compensating valves (7a, 7b) for controlling the respective differential pressures across the plurality of flow control valves (6a, 6b), the distribution compensating valves respectively having first pressure bearing chambers (52a, 52b) acting in a valve-closing direction, second pressure bearing chambers (53a, 53b) acting in a valve-opening direction, and third pressure bearing chambers (54a, 54b) acting in the valve-closing direction to reduce target values of differential pressures across a plurality of associated flow control valves (6a, 6b). The system further comprises a fourth pressure bearing chamber (55a, 55b) provided in at least one of the plurality of distribution compensating valves (7a, 7b) and subjected to a second control pressure (P.sub.CT) for acting in the valve-opening direction to set a target value (.DELTA.P.sub.T) of the differential pressure across the associated flow control valve (6a, 6b). This enables the target value of the differential pressure across the flow control valve to be freely changed whereby an allowable maximum flow rate passing through the flow control valve can be freely changed so that a maximum driving speed may be freely set dependent upon the capacity of a hydraulic actuator used and/or the forms of work to be carried out.

摘要翻译： PCT No.PCT / JP92 / 00589 Sec。 371日期：1993年1月5日 102（e）日期1993年1月5日PCT提交1992年5月8日PCT公布。 第WO92 / 19821号公报 1992年11月12日，一种用于建筑机械的液压驱动系统，包括用于控制跨越多个流量控制阀（6a，6b）的各自差压的多个分配补偿阀（7a，7b），分配补偿阀 分别具有沿阀关闭方向作用的第一压力承受室（52a，52b），沿阀打开方向作用的第二压力承受室（53a，53b）和作用在阀门中的第三压力承受室（54a，54b） - 关闭方向，以减少横跨多个相关联的流量控制阀（6a，6b）的差压的目标值。 该系统还包括设置在多个分配补偿阀（7a，7b）中的至少一个分配补偿阀（7a，7b）中的第四压力承受室（55a，55b），并经受用于沿阀打开方向作用的第二控制压力 设置跨过相关联的流量控制阀（6a，6b）的差压的目标值（（Delta）PT）。 这样可以自由地改变流量控制阀两端的差压的目标值，从而可以自由地改变通过流量控制阀的允许最大流量，从而可以根据一个 使用的液压执行机构和/或待执行的工作形式。

公开(公告)号：US08056331B2

公开(公告)日：2011-11-15

申请号：US12092500

申请日：2006-11-21

申请人： Kenji Kakizawa ,  Gen Yasuda

发明人： Kenji Kakizawa ,  Gen Yasuda

IPC分类号： F16D31/02

CPC分类号： F02D29/04 ,  E02F9/2235 ,  E02F9/226 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F04B49/08 ,  F15B2211/20576 ,  F15B2211/265 ,  F15B2211/633 ,  F15B2211/6651 ,  F15B2211/6652 ,  F15B2211/85

摘要： To permit a precise and easy adjustment of a pump absorption torque of a main pump in accordance with environmental conditions when a sub-pump different in characteristics from the main pump is connected to a prime mover. A main controller 12 includes a processor means for setting the level of an absorption torque of a cooling fan pump 20 at a maximum absorption torque in use, a processor means for incrementing an adjustment target absorption torque for a main pump 13 at a slow rate from a sufficiently small pump absorption torque, and a processor means for repeating loading of a load factor signal and the increment of the adjustment target absorption torque as long as “NO” is determined by a fourth determination means, and a processor means for storing the adjustment target absorption torque as an adjustment value when “YES” has been determined by the fourth determination means.

摘要翻译： 当与主泵的特性不同的副泵连接到原动机时，允许根据环境条件精确和容易地调节主泵的泵吸收扭矩。 主控制器12包括用于将冷却风扇泵20的吸收扭矩的水平设定在使用的最大吸收转矩的处理器装置，用于以较慢的速率将主泵13的调节目标吸收扭矩递增 足够小的泵吸收扭矩，以及用于重复负载系数信号的加载和调节目标吸收转矩的增加的处理器装置，只要由第四确定装置确定“否”;以及处理器装置，用于存储调节 目标吸收扭矩作为由第四确定装置确定为“是”时的调整值。