公开(公告)号：US5267440A

公开(公告)日：1993-12-07

申请号：US854668

申请日：1992-05-04

申请人： Kazunori Nakamura ,  Yusuke Kajita ,  Toichi Hirata ,  Genroku Sugiyama ,  Hiroshi Onoue ,  Hideaki Tanaka ,  Osamu Tomikawa ,  Masakazu Haga ,  Hiroshi Watanabe

发明人： Kazunori Nakamura ,  Yusuke Kajita ,  Toichi Hirata ,  Genroku Sugiyama ,  Hiroshi Onoue ,  Hideaki Tanaka ,  Osamu Tomikawa ,  Masakazu Haga ,  Hiroshi Watanabe

IPC分类号： E02F9/22 ,  F16D31/02 ,  F15B11/08 ,  F15B13/00

CPC分类号： E02F9/2285 ,  E02F9/2232 ,  E02F9/2235 ,  E02F9/2296

摘要： In a controller (229) of a hydraulic control system for construction machines, a valve control signal calculating function (301) works such that when an operation pattern signal (A-I) for actuators (201, 202 . . . ) is outputted, it selects corresponding one of plural output patterns for an auxiliary valve control pressure stored, as a function of a differential pressure signal between a pump delivery pressure and a maximum load pressure, in relation to the operation pattern signals, followed by calculating an auxiliary valve control pressure (Pc) dependent upon the differential pressure signal based on the selected output pattern, and also selects corresponding one of plural sets of rates of change (K . . . , K . . . ) for the auxiliary valve control pressure stored in relation to the operation pattern signals, followed by combining the calculated auxiliary valve control amount with the selected set of speed changes to calculate each of valve control signals (S21-S26).

公开(公告)号：US5062350A

公开(公告)日：1991-11-05

申请号：US536545

申请日：1990-07-12

申请人： Hideaki Tanaka ,  Toichi Hirata ,  Genroku Sugiyama ,  Masakazu Haga ,  Yusuke Kajita

发明人： Hideaki Tanaka ,  Toichi Hirata ,  Genroku Sugiyama ,  Masakazu Haga ,  Yusuke Kajita

IPC分类号： E02F9/22

CPC分类号： E02F9/2235 ,  E02F9/2228 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296

摘要： A hydraulic drive system for a civil engineering and construction machine of the present invention comprises a hydraulic pump (11, 11A), a plurality of actuators (4-6) driven by a hydraulic fluid supplied from the hydraulic pump and including an arm cylinder (5) and a boom cylinder (4), a plurality of flow control valves (12, 14, 16) for controlling flows of the hydraulic fluid supplied to the respective actuators and including an arm directional control valve (14) and a boom directional control valve (12) and a plurality of distribution compensating valves (13, 15, 17; 13A, 15A, 17A) for controlling differential pressures across the respective flow control valves, the distribution compensating valves each having a first device (13d,15d, 17d; 13e, 13f, 15e, 15f, 17e, 17f) to set a target value of the differential pressure across the associated flow control valve. The present invention is featured in further comprising a first device (21) for detecting an arm crowding operation performed by driving of the arm cylinder (5), and a second device (24, 30, 31; 24, 30A, 31) for controlling the drive means (15d; 15f) of the distribution compensating valve (15; 15A) associated with the arm cylinder so as to reduce at least the target value of the differential pressure across the flow control valve (14) associated with the arm cylinder, when the arm crowding operation is detected.

摘要翻译： PCT No.PCT / JP90 / 00375 Sec。 371日期1990年7月12日 102（e）日期1990年7月12日PCT 1990年3月29日PCT PCT。 公开号WO90 / 11413 日本1990年10月4日。本发明的土木工程机械的液压驱动系统包括液压泵（11,11A），由液压供给的液压流体驱动的多个致动器（4-6） 泵和包括臂缸（5）和动臂缸（4）;多个流量控制阀（12,14,16），用于控制供应到各个致动器的液压流体的流动，并包括臂方向控制阀（ 14）和用于控制横跨各个流量控制阀的压差的多个分配补偿阀（13,15,17; 13A，15A，17A）的动臂式方向控制阀（12）和分配补偿阀，分配补偿阀各自具有第一 装置（13d，15d，17d; 13e，13f，15e，15f，17e，17f），以设定跨过相关的流量控制阀的差压的目标值。 本发明的特征在于还包括：第一装置（21），用于检测通过所述手臂缸（5）的驱动进行的斗臂拥挤操作;以及第二装置（24,30,31; 24,30A，31），用于控制 与所述悬臂气缸相关联的所述分配补偿阀（15; 15A）的驱动装置（15d; 15f），以便至少将与所述手臂气缸相关联的所述流量控制阀（14）的差压的目标值减至最小， 当检测到胳膊拥挤操作时。

公开(公告)号：US5074194A

公开(公告)日：1991-12-24

申请号：US432729

申请日：1989-10-27

申请人： Toichi Hirata ,  Kuniaki Yoshida ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Masakazu Haga

发明人： Toichi Hirata ,  Kuniaki Yoshida ,  Hideaki Tanaka ,  Genroku Sugiyama ,  Masakazu Haga

IPC分类号： E02F9/22

CPC分类号： E02F9/2235 ,  F16H61/4061 ,  G05B2219/35392 ,  G05B2219/41302 ,  G05B2219/42241 ,  G05B2219/43203

摘要： In a hydraulic machine such as, for example, a hydraulic excavator equipped with hydraulic actuators, a hydraulic driving method and a hydraulic driving apparatus enable all the hydraulic actuators to be operated according to normal operational-speed characteristics (first mode). The method and the apparatus alter the operational-speed characteristics of at least one of the hydraulic actuators, according to other characteristics (second mode), in accordance with working contents. The actuators altered in this manner can be operated according to the operational-speed characteristics of the second mode, without exerting an influence upon the operational-speed characteristics of the remaining hydraulic actuators.

公开(公告)号：US4697418A

公开(公告)日：1987-10-06

申请号：US904118

申请日：1986-09-05

申请人： Nobuya Okabe ,  Toichi Hirata ,  Kuniaki Yoshida ,  Genroku Sugiyama ,  Masakazu Haga ,  Hideaki Tanaka ,  Akira Tatsumi

发明人： Nobuya Okabe ,  Toichi Hirata ,  Kuniaki Yoshida ,  Genroku Sugiyama ,  Masakazu Haga ,  Hideaki Tanaka ,  Akira Tatsumi

IPC分类号： E02F9/22 ,  E02F9/20 ,  F15B9/04

CPC分类号： E02F9/2246 ,  B60W10/06 ,  B60W10/30 ,  B60W30/188 ,  E02F9/2235 ,  E02F9/2282 ,  E02F9/2292 ,  E02F9/2296 ,  B60W2300/17 ,  B60W2510/0638 ,  B60W2510/30 ,  B60W2540/04 ,  B60W2710/0644 ,  B60W2710/30

摘要： A control system for a hydraulic excavator having a prime mover, revolution number control device for the prime mover, at least one variable displacement hydraulic pump driven by the prime mover, displacement volume control device for the pump, actuators driven by pressurized fluid discharged from the pump and working elements driven by the respective actuators. The control system includes maximum revolution number altering device for the prime mover associated with the revolution number control device, maximum displacement volume altering device for the pump associated with the displacement volume control devices, devices for sensing the operation condition of the actuators, devices for selecting an operation mode for each working element and control devices. The maximum revolution number altering device provides at least one maximum revolution number of the prime mover and the maximum displacement volume altering device provides at least one maximum displacement volume so that maximum revolution numbers of the prime mover and maximum displacement volumes are arranged in a plurality of combinations. The plurality of combinations are set in association with the operation condition of the actuators and the selection of the operation mode. The control means selects a combination of the maximum revolution number of the prime mover and the maximum displacement volume of the pumps on basis of output signals of the sensors and selection devices and drives the maximum revolution number altering device and the maximum displacement volume altering device to set the maximum revolution number of the prime mover and the maximum displacement volume of the hydraulic pump.

摘要翻译： 一种用于液压挖掘机的控制系统，具有用于原动机的原动机，转数控制装置，由原动机驱动的至少一个可变排量液压泵，用于泵的排量体积控制装置，由从 泵和工作元件由相应的致动器驱动。 控制系统包括与转数控制装置相关联的原动机的最大转数改变装置，与排量体积控制装置相关联的泵的最大排量变化装置，用于感测致动器的操作状态的装置，用于选择的装置 每个工作元件和控制装置的操作模式。 最大转数改变装置提供原动机的至少一个最大转速，并且最大排量改变装置提供至少一个最大排量，使得原动机和最大排量的最大转数排列成多个 组合。 多个组合与致动器的操作条件和操作模式的选择相关联地设置。 控制装置基于传感器和选择装置的输出信号选择原动机的最大转数与泵的最大排量之间的组合，并将最大转数改变装置和最大排量变更装置驱动到 设定原动机的最大转数和液压泵的最大排量。

公开(公告)号：US06564480B1

公开(公告)日：2003-05-20

申请号：US09722566

申请日：2000-11-28

申请人： Sadahisa Tomita ,  Genroku Sugiyama ,  Masakazu Haga ,  Ryohei Suzuki ,  Toshio Hasegawa ,  Koji Tahara

发明人： Sadahisa Tomita ,  Genroku Sugiyama ,  Masakazu Haga ,  Ryohei Suzuki ,  Toshio Hasegawa ,  Koji Tahara

IPC分类号： E02F926

CPC分类号： E02F9/24 ,  E02F9/26

摘要： In a working apparatus, a recessed portion is formed at an end surface of a pin provided at a boom to house a case of an angle sensor in the recessed portion. A flange is projected from the case along the direction of the axis of an input shaft so as to enclose the input shaft outside the movement range of a lever. By projecting the flange further out than the distance over which the input axis projects out, the protection provided by the flange for the input shaft is enhanced.

摘要翻译： 在工作装置中，在设置在动臂的销的端面上形成凹部以容纳凹部中的角度传感器的壳体。 凸缘从壳体沿着输入轴的轴线的方向突出，以将输入轴包围在杠杆的运动范围之外。 通过将凸缘突出超过输入轴伸出的距离，增强了用于输入轴的法兰提供的保护。

公开(公告)号：US5960378A

公开(公告)日：1999-09-28

申请号：US776007

申请日：1997-01-16

申请人： Hiroshi Watanabe ,  Toichi Hirata ,  Masakazu Haga ,  Kazuo Fujishima

发明人： Hiroshi Watanabe ,  Toichi Hirata ,  Masakazu Haga ,  Kazuo Fujishima

IPC分类号： E02F3/42 ,  E02F3/43 ,  E02F9/22 ,  E02F9/26 ,  E02F9/00

CPC分类号： E02F3/437 ,  E02F3/32 ,  E02F9/2285 ,  E02F9/2296 ,  E02F9/26

摘要： An excavation area setting system for area limiting excavation control in construction machines, with the excavation control being performed to calculate a target speed vector for control of a front device on the basis of a body, modify the target speed vector to limit a moving speed of the front device in the direction toward a boundary of a preset excavation area when the front device comes close to the boundary of the excavation area, and move the front device along the boundary of the excavation area. To set the excavation area, an external reference is installed horizontally outside the hydraulic excavator and a depth from the external reference to the boundary of the excavation area is set by using a setting device. The excavation area is set in a manner matched with the excavation control in which calculation is executed based on the position of the body.

摘要翻译： 一种用于施工机械中的区域限制挖掘控制的挖掘区域设定系统，进行挖掘控制以计算用于基于身体控制前方装置的目标速度矢量，修改目标速度矢量以限制目标速度向量的移动速度 当前部装置靠近挖掘区域的边界时，该前部装置朝向预定挖掘区域的边界方向，并且沿着挖掘区域的边界移动前部装置。 为了设置挖掘区域，在液压挖掘机外部水平地安装外部基准，并且通过使用设定装置来设定从外部参照到挖掘区域的边界的深度。 挖掘区域以与基于身体的位置执行计算的挖掘控制相配合的方式设定。

公开(公告)号：US5155996A

公开(公告)日：1992-10-20

申请号：US566466

申请日：1990-08-20

申请人： Akira Tatsumi ,  Toichi Hirata ,  Masakazu Haga ,  Eiki Izumi

发明人： Akira Tatsumi ,  Toichi Hirata ,  Masakazu Haga ,  Eiki Izumi

IPC分类号： E02F9/22

CPC分类号： F16H61/4078 ,  E02F9/2235 ,  E02F9/2246 ,  E02F9/2296 ,  F16H61/433 ,  B60W10/06 ,  F15B2211/20553 ,  F15B2211/253 ,  F15B2211/50536 ,  F16H2059/6846

摘要： A hydraulic drive system for a construction machine comprising a prime mover (1), a hydraulic pump (2) of variable displacement type driven by the prime mover, at least one hydraulic actuator (6) driven by a hydraulic fluid delivered from the hydraulic pump, control valves connected between the hydraulic pump and the actuator for controlling a flow rate of the hydraulic fluid supplied to the actuator dependent on the operation amount of control apparatus, pump control apparatus for controlling a displacement volume of the hydraulic pump dependent on the operation amount of the control apparatus such that the delivery rate of the hydraulic pump is increased with an increase in the operation amount, and prime mover control apparatus (29) for controlling a revolution speed of the prime mover. The prime mover control apparatus (29) has a function (33, 36) to monitor saturation of the delivery rate of the hydraulic pump (2), and to raise up the revolution speed of the prime mover (1) to prevent the pump from the saturation when the hydraulic pump reaches a predetermined state concerned with the saturation.

公开(公告)号：US4881450A

公开(公告)日：1989-11-21

申请号：US173585

申请日：1988-03-25

申请人： Toichi Hirata ,  Masakazu Haga ,  Ichiro Hirami ,  Kuniaki Yoshida

发明人： Toichi Hirata ,  Masakazu Haga ,  Ichiro Hirami ,  Kuniaki Yoshida

IPC分类号： G05B19/40

CPC分类号： G05B19/40 ,  G05B2219/35438 ,  G05B2219/36551 ,  G05B2219/41309

摘要： A drive control system, which is suitable for use in a hydraulic machine, is equipped with an electric lever device having a manipulation lever and a potentiometer for generating an electrical manipulation signal corresponding to the degree of each manipulation of the lever, a control valve connected to a hydraulic circuit adapted to actuate a hydraulic actuator, and a controller unit equipped with a main controller for receiving the manipulation signal and computing a control signal for the control valve on the basis of the manipulation signal and an output device for generating an electrical actuation signal corresponding to the control signal. The system also includes a neutral position sensing means provided with the electric lever device and adapted to sense a neutral position of the manipulation lever and an inhibition device which receives an output signal from the neutral position sensing means and when the manipulation lever is at the neutral position, inhibits the transmission of a signal between the main controller of the control means and the control valve.

公开(公告)号：US5835874A

公开(公告)日：1998-11-10

申请号：US553702

申请日：1995-12-05

申请人： Toichi Hirata ,  Eiji Yamagata ,  Hiroshi Watanabe ,  Masakazu Haga ,  Kazuo Fujishima ,  Hiroyuki Adachi

发明人： Toichi Hirata ,  Eiji Yamagata ,  Hiroshi Watanabe ,  Masakazu Haga ,  Kazuo Fujishima ,  Hiroyuki Adachi

IPC分类号： E02F3/43 ,  E02F9/20 ,  E02F9/22

CPC分类号： E02F9/2033 ,  E02F3/301 ,  E02F3/435

摘要： In a region limiting excavation control system for a construction machine, a region where a front attachment (1A) is movable is set beforehand. A control unit (9) calculates the position and posture of the front attachment based on signals from angle sensors (8a-8c), calculates a target speed vector (Vc) of the front attachment based on signals from control lever units (4a, 4b), and modifies the target speed vector such that the target speed vector is maintained as it is when the front attachment is within the set region but not near the boundary thereof. A vector component (Vcy) of the target speed vector in the direction toward the boundary of the set region is reduced when the front attachment is within the set region near the boundary thereof, and the front attachment is returned to the set region and when the front attachment is outside the set region. As a result, the excavation within a limited region can be implemented efficiently and smoothly.

摘要翻译： PCT No.PCT / JP95 / 00843 Sec。 371 1995年12月5日第 102（e）日期1995年12月5日PCT 1995年4月27日PCT PCT。 第WO95 / 30059号公报 日期：1995年11月9日在建筑机械的挖掘控制系统的区域限制中，预先设置前附件（1A）可移动的区域。 控制单元（9）基于来自角度传感器（8a-8c）的信号，计算出前侧安装件的位置和姿势，根据来自控制杆单元（4a，4b）的信号，计算出前部附件的目标速度向量（Vc） ），并且修改目标速度矢量，使得当前附件在设定区域内但不在其边界附近时目标速度矢量保持原样。 当前附件在其附近的设定区域内时，朝向设定区域的边界方向的目标速度矢量的矢量分量（Vcy）减小，并且前附件返回到设定区域，并且当 前附件在设定区域之外。 因此，可以有效地平稳地实施有限区域内的挖掘。

公开(公告)号：US5701691A

公开(公告)日：1997-12-30

申请号：US596103

申请日：1996-01-31

申请人： Hiroshi Watanabe ,  Toichi Hirata ,  Masakazu Haga ,  Eiji Yamagata ,  Kazuo Fujishima ,  Hiroyuki Adachi

发明人： Hiroshi Watanabe ,  Toichi Hirata ,  Masakazu Haga ,  Eiji Yamagata ,  Kazuo Fujishima ,  Hiroyuki Adachi

IPC分类号： E02F3/43 ,  E02F3/85 ,  E02F9/20 ,  E02F5/02

CPC分类号： E02F9/2033 ,  E02F3/435

摘要： In an excavation area limiting control system for a construction machine for limitingly controlling an area to be excavated, a region where a front device 1A is movable is set beforehand. The position and posture of the front device are calculated based on signals from angle sensors 8a-8c, and a target speed vector of the front device is calculated based on detection signals from control lever units and load pressures detected by pressure sensors 270a to 271b. The target speed vector is modified so that a vector component of the target speed vector in the direction toward the boundary of the set region is reduced when the front device is within the set region near the boundary thereof, and the front device is returned to the set region when the front device is outside the set region. Control signals corresponding to the modified target speed vector are further modified depending on the load pressures and output to proportional solenoid valves 210a to 211b. As a result, the excavation within a limited area can be implemented efficiently and smoothly, and stable control is achieved with good accuracy regardless of change in the load pressures of hydraulic actuators.

摘要翻译： PCT No.PCT / JP95 / 01053 Sec。 371日期1996年1月31日 102（e）日期1996年1月31日PCT提交1995年5月31日PCT公布。 第WO95 / 33100号公报 日期1995年12月7日在用于限制要开挖区域的施工机械的挖掘区域限制控制系统中，预先设置前置装置1A可移动的区域。 基于来自角度传感器8a-8c的信号计算前部装置的位置和姿势，并且基于来自控制杆单元的检测信号和由压力传感器270a至271b检测的负载压力来计算前部装置的目标速度矢量。 目标速度矢量被修改为当前置装置位于其边界附近的设定区域内时，目标速度矢量朝向设定区域的边界方向的矢量分量减小，并且前置装置返回到 当前置设备在设定区域之外时，设置区域。 对应于修改的目标速度矢量的控制信号根据负载压力进一步修改并输出到比例电磁阀210a至211b。 结果，可以有效地平稳地实施有限区域内的挖掘，而且与液压致动器的负载压力的变化无关地实现高精度的稳定的控制。