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1. 发明授权

US08160778B2 Steering system for engineering vehicle 有权
标题翻译：工程车辆转向系统
公开(公告)号：US08160778B2
公开(公告)日：2012-04-17
申请号：US12377393
申请日：2007-12-26
申请人： Kazunori Nakamura , Tsuyoshi Nakamura , Mitsuo Kihara , Hiroyuki Azuma , Atsushi Shimazu
发明人： Kazunori Nakamura , Tsuyoshi Nakamura , Mitsuo Kihara , Hiroyuki Azuma , Atsushi Shimazu
IPC分类号： B62D5/28
CPC分类号： B62D12/00 , B62D5/065 , B62D5/075 , B62D5/09 , E02F9/225 , E02F9/2253 , E02F9/2285 , E02F9/2296
摘要： A hydraulic steering unit 5 generates a control pressure corresponding to the rotational quantity and rotational direction of the steering wheel 109 on the basis of pressurized oil of a pilot pump 13. Signals of pressure sensors 6a and 6b used to detect the control pressure, and a signal of a front operation detection unit 31, are inputted into a controller 132. A controller 32 and solenoid valves 33a and 33b control a stroke of a steering valve 4 so that the stroke becomes larger with increase in control pressure detected by each of the pressure sensors 6a and 6b. In addition, when the operation of a front work device is detected, the controller 32 and the solenoid valves 33a and 33b control the stroke of the steering valve 4 so that the stroke becomes larger than that provided when the operation of the front work device is not detected.
摘要翻译：液压转向单元5基于先导泵13的加压油产生与方向盘109的旋转量和旋转方向对应的控制压力。用于检测控制压力的压力传感器6a和6b的信号，以及前部操作检测单元31的信号被输入到控制器132中。控制器32和电磁阀33a和33b控制转向阀4的行程，使得随着每个压力检测到的控制压力的增加，行程变大传感器6a和6b。此外，当检测到前工作装置的操作时，控制器32和电磁阀33a和33b控制转向阀4的行程，使得行程变得大于当前工作装置的操作是没有检测到。

2. 发明申请

US20100228439A1 STEERING SYSTEM FOR ENGINEERING VEHICLE 有权
标题翻译：工程车辆转向系统
公开(公告)号：US20100228439A1
公开(公告)日：2010-09-09
申请号：US12377393
申请日：2007-12-26
申请人： Kazunori Nakamura , Tsuyoshi Nakamura , Mitsuo Kihara , Hiroyuki Azuma , Atsushi Shimazu
发明人： Kazunori Nakamura , Tsuyoshi Nakamura , Mitsuo Kihara , Hiroyuki Azuma , Atsushi Shimazu
IPC分类号： B62D5/065 , G06F19/00
CPC分类号： B62D12/00 , B62D5/065 , B62D5/075 , B62D5/09 , E02F9/225 , E02F9/2253 , E02F9/2285 , E02F9/2296
摘要： A hydraulic steering unit 5 generates a control pressure corresponding to the rotational quantity and rotational direction of the steering wheel 109 on the basis of pressurized oil of a pilot pump 13. Signals of pressure sensors 6a and 6b used to detect the control pressure, and a signal of a front operation detection unit 31, are inputted into a controller 132. A controller 32 and solenoid valves 33a and 33b control a stroke of a steering valve 4 so that the stroke becomes larger with increase in control pressure detected by each of the pressure sensors 6a and 6b. In addition when the operation of a front work device is detected, the controller 32 and the solenoid valves 33a and 33b control the stroke of the steering valve 4 so that the stroke becomes larger than that provided when the operation of the front work device is not detected.
摘要翻译：液压转向单元5基于先导泵13的加压油产生与方向盘109的旋转量和旋转方向对应的控制压力。用于检测控制压力的压力传感器6a和6b的信号，以及前部操作检测单元31的信号被输入到控制器132中。控制器32和电磁阀33a和33b控制转向阀4的行程，使得随着每个压力检测到的控制压力的增加，行程变大传感器6a和6b。此外，当检测到前工作装置的操作时，控制器32和电磁阀33a和33b控制转向阀4的行程，使得行程变得大于前工作装置的操作时提供的行程检测到。

3. 发明授权

US09341198B2 Hydraulic drive device for working machine 有权
标题翻译：液压驱动装置
公开(公告)号：US09341198B2
公开(公告)日：2016-05-17
申请号：US14118141
申请日：2012-05-17
申请人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
发明人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
IPC分类号： F15B15/20 , E02F9/22 , E02F9/12
CPC分类号： F15B15/20 , E02F9/123 , E02F9/2217 , E02F9/2242 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.
摘要翻译：一种用于液压挖掘机的液压驱动装置，包括：第一液压泵; 与第一泵并联连接的第一起重臂方向控制阀和第二臂方向控制阀; 第二液压泵; 以及与第二泵并联连接的第二起重臂方向控制阀和第一臂方向控制阀; 其中：液压驱动装置还包括：第三液压泵; 连接到第三泵的第三起重臂方向控制阀，并控制供应到动臂缸的压力油的流动; 以及与第三动臂方向控制阀串联连接的第三臂方向控制阀，并控制供给到手臂缸的压力油的流动。

4. 发明申请

US20090255750A1 STEERING SYSTEM FOR ENGINEERING VEHICLE 失效
标题翻译：工程车辆转向系统
公开(公告)号：US20090255750A1
公开(公告)日：2009-10-15
申请号：US12303288
申请日：2007-12-07
申请人： Kazunori Nakamura , Tsuyoshi Nakamura , Kouji Ishikawa , Hiroyuki Azuma , Kentarou Itoga
发明人： Kazunori Nakamura , Tsuyoshi Nakamura , Kouji Ishikawa , Hiroyuki Azuma , Kentarou Itoga
IPC分类号： B62D5/065 , F15B21/08 , G06F19/00
CPC分类号： B62D5/075 , E02F9/225
摘要： A priority valve 7 is disposed between a hydraulic pump 2 and a steering valve 4 and is used to supply priority steering cylinders 103a and 103b with pressurized oil discharged from the hydraulic pump 2 by controlling the differential pressure across a meter-in hydraulic line of the steering valve 4 such that the differential pressure is kept at a target value. A pressure sensor 31 for detecting the load pressures of the steering cylinders 103a and 103b is provided. On the basis of the detected load pressures, the target value set for the priority valve 7 is modified by devices including a controller 32, a solenoid valve 33, a pilot hydraulic line 29, and a pressure receiving unit 24c of the priority valve 7. The above configuration enables suppression of a shock occurring at the start of turning of the steering wheel.
摘要翻译：优先阀7设置在液压泵2和转向阀4之间，并且用于通过控制液压泵2的流入液压管路中的压差来向液压泵2排出的加压油供应优先转向缸103a和103b。转向阀4使差压保持在目标值。设置有用于检测转向缸103a，103b的负载压力的压力传感器31。基于检测到的负载压力，通过包括优先阀7的控制器32，电磁阀33，先导液压管路29和压力接收单元24c的装置来改变对优先阀7设定的目标值。上述结构能够抑制在方向盘转动开始时发生的冲击。

5. 发明申请

US20100101888A1 Steering Device For Construction Vehicle 失效
标题翻译：施工车辆转向装置
公开(公告)号：US20100101888A1
公开(公告)日：2010-04-29
申请号：US12523937
申请日：2008-01-22
申请人： Tsuyoshi Nakamura , Kentaro Itoga , Hiroyuki Azuma , Kazunori Nakamura
发明人： Tsuyoshi Nakamura , Kentaro Itoga , Hiroyuki Azuma , Kazunori Nakamura
IPC分类号： B62D5/09
CPC分类号： B62D1/22 , B62D5/09 , B62D12/00 , E02F9/2228 , E02F9/225 , E02F9/2285
摘要： [Problem] To provide a steering system for a construction vehicle, which is suited not only for traveling on general roadways but also for work at construction sites and can perform high-reliability steering control.[Solution] A steering system for a construction vehicle is provided with a directional control valve 5 for controlling a flow of pressure oil to body-articulating hydraulic cylinders 2 that perform steering and also with a steering-wheel-operated signal generation means 6 for outputting by operation of a steering wheel 7a a pilot signal to the directional control valve 5 for switching the valve 5. The steering system is also provided with a lever-operated signal generation means for producing by operation of a lever 10a a pilot signal to switch the directional control valve 5, said lever-operated signal generation means including pressure-proportional solenoid valves 12a,12b or the like, selector valves 13a,13b switchable to permit selectively outputting the pilot signal from one of the signal generation means to the directional control valve 5, and an automated switching means for switching the selector valves 13a,13b such that upon operation of the steering wheel 7a, the pilot signal from the steering-wheel-operated signal generation means 6 can be preferentially outputted to the directional control valve 5.
摘要翻译： [问题]提供一种用于施工车辆的转向系统，其不仅适用于在一般道路上行驶，而且适用于在施工现场的工作，并且可以执行高可靠性的转向控制。 [解决方案]用于施工车辆的转向系统设置有用于控制压力油流向执行转向的身体关节液压缸2的方向控制阀5以及用于输出的方向盘操作信号产生装置6 方向盘7a通过操作方向控制阀5的导向信号来切换阀5.转向系统还设置有杆操作信号产生装置，用于通过杆10a的操作产生一个导向信号，以切换方向控制阀5，所述杠杆操作信号发生装置包括比例电磁阀12a，12b等，切换阀13a，13b可切换到允许选择性地将导频信号从信号发生装置之一输出到方向控制阀以及用于切换选择阀13a，13b的自动切换装置，使得在方向盘7a操作时，导频信号从方向盘操作信号发生装置6可以优先输出到方向控制阀5。

6. 发明申请

US20140090369A1 Hydraulic Drive Device for Working Machine 有权
标题翻译：液压驱动装置
公开(公告)号：US20140090369A1
公开(公告)日：2014-04-03
申请号：US14118141
申请日：2012-05-17
申请人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
发明人： Tsuyoshi Nakamura , Kazunori Nakamura , Yasuo Okano , Kouji Ishikawa , Kensuke Sato , Hiroyuki Azuma , Mitsuhiko Kanehama , Yusuke Kajita
IPC分类号： F15B15/20
CPC分类号： F15B15/20 , E02F9/123 , E02F9/2217 , E02F9/2242 , E02F9/2285 , E02F9/2292 , E02F9/2296
摘要： A hydraulic drive device for a hydraulic excavator, includes: a first hydraulic pump; a first boom directional control valve and a second arm directional control valve which are connected in parallel to the first pump; a second hydraulic pump; and a second boom directional control valve and a first arm directional control valve which are connected in parallel to the second pump; wherein: the hydraulic drive device also includes: a third hydraulic pump; a third boom directional control valve connected to the third pump and controlling the flow of pressure oil supplied to a boom cylinder; and a third arm directional control valve connected in tandem with the third boom directional control valve and controlling the flow of pressure oil supplied to an arm cylinder.
摘要翻译：一种用于液压挖掘机的液压驱动装置，包括：第一液压泵; 与第一泵并联连接的第一起重臂方向控制阀和第二臂方向控制阀; 第二液压泵; 以及与第二泵并联连接的第二起重臂方向控制阀和第一臂方向控制阀; 其中：液压驱动装置还包括：第三液压泵; 连接到第三泵的第三起重臂方向控制阀，并控制供应到动臂缸的压力油的流动; 以及与第三动臂方向控制阀串联连接的第三臂方向控制阀，并控制供给到手臂缸的压力油的流动。

7. 发明授权

US07913801B2 Steering device for construction vehicle 失效
标题翻译：施工车辆转向装置
公开(公告)号：US07913801B2
公开(公告)日：2011-03-29
申请号：US12523937
申请日：2008-01-22
申请人： Tsuyoshi Nakamura , Kentaro Itoga , Hiroyuki Azuma , Kazunori Nakamura
发明人： Tsuyoshi Nakamura , Kentaro Itoga , Hiroyuki Azuma , Kazunori Nakamura
IPC分类号： B62D5/04
CPC分类号： B62D1/22 , B62D5/09 , B62D12/00 , E02F9/2228 , E02F9/225 , E02F9/2285
摘要： To provide a steering system for a construction vehicle, which is suited not only for traveling on general roadways but also for work at construction sites and can perform high-reliability steering control.A steering system for a construction vehicle is provided with a directional control valve 5 for controlling a flow of pressure oil to body-articulating hydraulic cylinders 2 that perform steering and also with a steering-wheel-operated signal generation means 6 for outputting by operation of a steering wheel 7a a pilot signal to the directional control valve 5 for switching the valve 5. The steering system is also provided with a lever-operated signal generation means for producing by operation of a lever 10a a pilot signal to switch the directional control valve 5, said lever-operated signal generation means including pressure-proportional solenoid valves 12a,12b or the like, selector valves 13a,13b switchable to permit selectively outputting the pilot signal from one of the signal generation means to the directional control valve 5, and an automated switching means for switching the selector valves 13a,13b such that upon operation of the steering wheel 7a, the pilot signal from the steering-wheel-operated signal generation means 6 can be preferentially outputted to the directional control valve 5.
摘要翻译：提供一种适用于工程车辆的转向系统，不仅适用于一般道路行驶，而且适用于施工现场的工作，还可进行高可靠性的转向控制。用于施工车辆的转向系统设置有用于控制压力油流向执行转向的身体关节液压缸2的方向控制阀5，以及用于通过操作输出的方向盘操作信号产生装置6输出方向盘7a向方向控制阀5提供用于切换阀5的导向信号。转向系统还设置有操作杆操作信号产生装置，用于通过操作杆10a产生一个导向信号以切换方向控制阀如图5所示，所述杠杆操作信号发生装置包括比例电磁阀12a，12b等，切换阀13a，13b可切换以允许选择性地将信号从信号发生装置中的一个输出到方向控制阀5;以及用于切换选择阀13a，13b的自动切换装置，使得在方向盘7a操作时，来自s的导频信号可以将方向盘操作信号发生装置6优先输出到方向控制阀5。

8. 发明授权

US07891458B2 Steering system for engineering vehicle 失效
标题翻译：工程车辆转向系统
公开(公告)号：US07891458B2
公开(公告)日：2011-02-22
申请号：US12303288
申请日：2007-12-07
申请人： Kazunori Nakamura , Tsuyoshi Nakamura , Kouji Ishikawa , Hiroyuki Azuma , Kentarou Itoga
发明人： Kazunori Nakamura , Tsuyoshi Nakamura , Kouji Ishikawa , Hiroyuki Azuma , Kentarou Itoga
IPC分类号： B62D5/06
CPC分类号： B62D5/075 , E02F9/225
摘要： A priority valve 7 is disposed between a hydraulic pump 2 and a steering valve 4 and is used to supply priority steering cylinders 103a and 103b with pressurized oil discharged from the hydraulic pump 2 by controlling the differential pressure across a meter-in hydraulic line of the steering valve 4 such that the differential pressure is kept at a target value. A pressure sensor 31 for detecting the load pressures of the steering cylinders 103a and 103b is provided. On the basis of the detected load pressures, the target value set for the priority valve 7 is modified by devices including a controller 32, a solenoid valve 33, a pilot hydraulic line 29, and a pressure receiving unit 24c of the priority valve 7. The above configuration enables suppression of a shock occurring at the start of turning of the steering wheel.
摘要翻译：优先阀7设置在液压泵2和转向阀4之间，并且用于通过控制液压泵2的流入液压管路中的压差来向液压泵2排出的加压油供应优先转向缸103a和103b。转向阀4使差压保持在目标值。设置有用于检测转向缸103a，103b的负载压力的压力传感器31。基于检测到的负载压力，通过包括优先阀7的控制器32，电磁阀33，先导液压管路29和压力接收单元24c的装置来改变对优先阀7设定的目标值。上述结构能够抑制在方向盘转动开始时发生的冲击。

9. 发明申请

US20130047598A1 Hydraulic Control Device for Work Vehicle 有权
标题翻译：工作车液压控制装置
公开(公告)号：US20130047598A1
公开(公告)日：2013-02-28
申请号：US13696537
申请日：2011-05-06
申请人： Atsushi Shimazu , Hiroyuki Azuma , Kazuo Chounan , Yasunori Miyamoto
发明人： Atsushi Shimazu , Hiroyuki Azuma , Kazuo Chounan , Yasunori Miyamoto
IPC分类号： F15B9/16
CPC分类号： E02F9/2282 , E02F3/431 , E02F9/2207 , E02F9/2285 , E02F9/2296
摘要： A hydraulic control device for a work vehicle includes: a hydraulic pump that supplies pressure oil; an arm drive actuator that drives, with pressure oil supplied from the hydraulic pump, an arm attached to the work vehicle so as to swing the arm; a bucket drive actuator that drives, with pressure oil supplied from the hydraulic pump, a bucket attached to a front end of the arm, so as to swing the bucket; an arm drive pressure oil control valve that controls drive of the arm drive actuator by controlling pressure oil supplied from the hydraulic pump to the arm drive actuator; a bucket drive pressure oil control valve that controls drive of the bucket drive actuator by controlling pressure oil supplied from the hydraulic pump to the bucket drive actuator; an arm operation unit that controls the arm drive pressure oil control valve; a bucket operation unit that controls the bucket drive pressure oil control valve; an operating state detection unit that detects operating states of the arm drive actuator and the bucket drive actuator; and a flow control valve that restricts pressure oil to be supplied to the arm drive actuator as combined operation of the arm drive actuator and the bucket drive actuator is detected via the operating state detection unit.
摘要翻译：一种用于工作车辆的液压控制装置，包括：供给压力油的液压泵; 一个臂驱动执行机构，用液压泵供给的压力油驱动连接到作业车辆上的臂，使其摆动; 铲斗驱动致动器，其通过从所述液压泵供给的压力油驱动附接到所述臂的前端的铲斗，以使所述铲斗摆动; 臂驱动压力油控制阀，其通过控制从液压泵供给到臂驱动致动器的压力油来控制臂驱动致动器的驱动; 铲斗驱动压力油控制阀，其通过控制从液压泵供给到铲斗驱动致动器的压力油来控制铲斗驱动致动器的驱动; 手臂操作单元，其控制臂驱动压力油控制阀; 铲斗操作单元，其控制铲斗驱动压力油控制阀; 操作状态检测单元，其检测臂驱动致动器和铲斗驱动致动器的操作状态; 以及流量控制阀，其通过操作状态检测单元检测到臂驱动致动器和铲斗驱动致动器的组合操作，从而限制供给到臂驱动致动器的压力油。

10. 发明申请

US20100204008A1 Hydraulic Pressure Supply Device for Industrial Vehicle 有权
标题翻译：工业车辆液压供油装置
公开(公告)号：US20100204008A1
公开(公告)日：2010-08-12
申请号：US12679820
申请日：2008-09-25
申请人： Hiroyuki Azuma , Atsushi Shimazu , Masaki Yoshikawa , Kosei Suzuki
发明人： Hiroyuki Azuma , Atsushi Shimazu , Masaki Yoshikawa , Kosei Suzuki
IPC分类号： B60W10/10 , B60W30/18
CPC分类号： F16H61/0031 , F16H41/30 , Y10T74/19149 , Y10T74/19153 , Y10T477/688
摘要： A first hydraulic circuit leads, as clutch control pressure, pressurized oil supplied from a first hydraulic pump, to a transmission control device after regulating the pressurized oil, and leads, as torque converter operation oil, pressured oil to a torque converter, and leads pressurized oil to an oil cooler. Through a second hydraulic circuit, pressurized oil from a second hydraulic pump is distributed to a circuit portion downstream of the pressure regulation valve and upstream of a safety valve and to a circuit portion downstream of the torque converter and upstream of the oil cooler. A flow control device changes a proportion of a rate of flow in the second hydraulic circuit so that a proportion of the rate of flow to the circuit portion downstream of the torque converter and upstream of the oil cooler increases as pressure at an entrance of the torque converter increases.
摘要翻译：作为离合器控制压力的第一液压回路，在调节加压油之后，将从第一液压泵供给的加压油引导到变速器控制装置，并将作为变矩器操作油的加压油引导到变矩器，并将加压油油到油冷却器。通过第二液压回路，来自第二液压泵的加压油被分配到压力调节阀下游的电路部分和安全阀的上游以及转矩转换器下游的电路部分和油冷却器的上游。流量控制装置改变第二液压回路中的流量比例，使得在扭矩转换器下游的电路部分和油冷却器上游的流量的比例随转矩入口处的压力而增加转换器增加。

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