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1. 发明申请

US20150075148A1 HYDRAULIC CONTROL SYSTEM 审中-公开
标题翻译：液压控制系统
公开(公告)号：US20150075148A1
公开(公告)日：2015-03-19
申请号：US14236905
申请日：2012-05-18
申请人： Kenpei Yamaji
发明人： Kenpei Yamaji
IPC分类号： F15B9/04 , E02F9/22 , F15B13/04 , F15B13/06 , F15B13/01 , F15B13/044
CPC分类号： F15B9/04 , E02F9/2235 , E02F9/2296 , F04B49/06 , F04B2205/05 , F15B11/02 , F15B13/01 , F15B13/0401 , F15B13/044 , F15B13/06 , F15B2211/20546 , F15B2211/3111 , F15B2211/6309 , F15B2211/6652 , F15B2211/6653 , F15B2211/6654 , F15B2211/6655 , F15B2211/6656 , F15B2211/6658
摘要： A hydraulic control system is provided in which hydraulic oil discharged from a variable displacement hydraulic pump is controlled and supplied to a hydraulic actuator by a closed center control valve activated based on operation input from an operation device, thereby controlling activation of the hydraulic actuator. With the pump displacement detected by pump displacement detecting means and the pump output pressure detected by pump output pressure detecting means being used as feedback input and the characteristic value determined by the operation input and the feedback input being used as a target value of a control loop, variable displacement control is performed by a controller provided with a horsepower control loop, a pressure control loop, a flow rate control loop, and a minimum pressure holding loop that feed back a calculated value based on the feedback input or the feedback input itself.
摘要翻译：提供了一种液压控制系统，其中从可变容量液压泵排出的液压油通过基于来自操作装置的操作输入而被启动的闭合中心控制阀被控制并提供给液压致动器，从而控制液压致动器的启动。利用泵位移检测装置检测到的泵排量和由泵输出压力检测装置检测的泵输出压力用作反馈输入，并且将由操作输入和反馈输入确定的特征值用作控制回路的目标值可变排量控制由具有马力控制回路，压力控制回路，流量控制回路以及基于反馈输入或反馈输入本身反馈计算值的最小压力保持回路的控制器执行。

2. 发明申请

US20100115936A1 SYSTEM AND METHOD FOR PUMP-CONTROLLED CYLINDER CUSHIONING 有权
标题翻译：泵控制缸体系统及方法
公开(公告)号：US20100115936A1
公开(公告)日：2010-05-13
申请号：US12613130
申请日：2009-11-05
申请人： Christopher Alan Williamson , Monika Marianne Ivantysynova
发明人： Christopher Alan Williamson , Monika Marianne Ivantysynova
IPC分类号： F15B9/04
CPC分类号： E02F9/2207 , E02F9/2214 , E02F9/2228 , E02F9/2289 , F15B11/048 , F15B21/08 , F15B2211/20546 , F15B2211/20561 , F15B2211/27 , F15B2211/6336 , F15B2211/785
摘要： A system and method for controlling the movement of an implement of an earthmoving machine. The system includes a hydraulic actuator adapted to move the implement. A variable displacement pump is coupled to the actuator for delivering a pressurized fluid to and receiving pressurized fluid from chambers within the actuator. A sensor generates an output based on the position of the actuator's piston or piston rod, and a controller controls the displacement of the variable displacement pump in response to the output of the sensor by executing an algorithm to reduce the flow rate of the fluid to and from the actuator's chambers and thereby reduce the velocity of the piston as it approaches an end of a piston stroke thereof and prevent the piston from impacting the actuator at the end of the piston stroke.
摘要翻译：一种用于控制土方机械的工具运动的系统和方法。该系统包括适于移动工具的液压致动器。可变排量泵联接到致动器，用于将加压流体输送到致动器内的腔室并从其接收加压流体。传感器基于致动器的活塞或活塞杆的位置产生输出，并且控制器通过执行算法来响应于传感器的输出来控制可变排量泵的位移，以降低流体流入和/ 并且因此当活塞接近其活塞冲程的端部时降低活塞的速度，并且防止活塞在活塞冲程结束时撞击致动器。

3. 发明申请

US20050138924A1 Hydraulic drive apparatus 审中-公开
标题翻译：液压驱动装置
公开(公告)号：US20050138924A1
公开(公告)日：2005-06-30
申请号：US10998796
申请日：2004-11-29
申请人： Haruo Kodama , Nobuaki Shimizu , Youji Asano
发明人： Haruo Kodama , Nobuaki Shimizu , Youji Asano
IPC分类号： E02F9/22 , F15B9/04 , F15B9/14 , F15B11/05 , F16D31/02
CPC分类号： F15B9/14 , E02F9/2228 , E02F9/2235 , E02F9/2282 , E02F9/2285 , E02F9/2296 , F15B9/04 , F15B11/055 , F15B2211/20546 , F15B2211/255 , F15B2211/30525 , F15B2211/3111 , F15B2211/3116 , F15B2211/3144 , F15B2211/326 , F15B2211/327 , F15B2211/329 , F15B2211/351 , F15B2211/40515 , F15B2211/41509 , F15B2211/426 , F15B2211/455 , F15B2211/50518 , F15B2211/5151 , F15B2211/5157 , F15B2211/528 , F15B2211/56 , F15B2211/6309 , F15B2211/6313 , F15B2211/6316 , F15B2211/6346 , F15B2211/665 , F15B2211/6652 , F15B2211/6653 , F15B2211/67 , F15B2211/7058 , F15B2211/7142 , F15B2211/78 , F15B2211/781
摘要： A hydraulic drive apparatus in which a hydraulic pressure motor is driven and rotated depending on an operation position entered from an operation lever. An oil pressure control circuit and method which detect pressures of operation oils capable of driving the hydraulic pressure motor to rotate and a pressure of an operation oil supplied from a hydraulic pump to a directional control valve. The oil pressure control circuit varies a set pressure of a main relief valve in a manner that feeds current to an electromagnetic relief valve and varies a set pressure of an electromagnetic relief valve. As a result, the oil pressure control circuit carries out such a control that a pressure of an operation oil received from the hydraulic pump is higher than a pressure of an operation oil for driving and rotating the hydraulic pressure motor by a predetermined pressure.
摘要翻译：一种液压驱动装置，其中液压马达根据从操作杆输入的操作位置被驱动和旋转。油压控制电路和方法，其检测能够驱动液压马达旋转的操作油的压力和从液压泵供给到方向控制阀的操作油的压力。油压控制回路以向电磁溢流阀供给电流并改变电磁溢流阀的设定压力的方式改变主安全阀的设定压力。结果，油压控制电路进行这样的控制，使得从液压泵接收的操作油的压力高于用于驱动和旋转液压马达预定压力的操作油的压力。

4. 发明授权

US3939656A Hydrostatic transmission pump 失效
标题翻译：静液压传动泵
公开(公告)号：US3939656A
公开(公告)日：1976-02-24
申请号：US329027
申请日：1973-02-02
申请人： Harold A. Goldfein
发明人： Harold A. Goldfein
IPC分类号： F04B47/04 , F16H61/42 , F15B9/04 , F15B21/04
CPC分类号： F16H61/42 , F04B47/04 , Y10S417/904
摘要： An improved hydraulic drive system for a doubleacting hydraulic cylinder which drives or rocks the walking beam of an oil well pump. A closed circuit hydrostatic drive system is used to operate the double-acting hydraulic power cylinder unit and includes a variable displacement reversing swashplate pump driven at a predetermined constant speed by a prime mover such as an electric motor. Suitable automatic control means are provided for synchronizing the reversing movement of the swashplate with the rocking movement of the walking beam.
摘要翻译：一种用于双重液压缸的改进的液压驱动系统，其驱动或摇动油井泵的步进梁。闭路液压驱动系统用于操作双作用液压动力缸单元，并且包括由诸如电动机的原动机以预定的恒定速度驱动的可变排量反转斜盘泵。提供了适当的自动控制装置，用于使斜盘的反转运动与步进梁的摆动运动同步。

5. 发明授权

US3646754A Motor operated servo pump 失效
标题翻译：电机操作伺服泵
公开(公告)号：US3646754A
公开(公告)日：1972-03-07
申请号：US3646754D
申请日：1970-05-22
申请人： LTV ELECTROSYSTEMS INC
发明人： KOCH WERNER G , MARCHELL ROBERT H , REDMOND WILLIAM G
IPC分类号： F15B9/03 , F15B9/04 , F15B15/18
CPC分类号： F15B9/04 , F15B9/03 , Y10S60/911
摘要： A power actuator in a hydraulic system is controlled in accordance with an electronic control signal energizing a variable displacement servo pump interconnected to the power actuator. In the hydraulic system, the variable displacement servo pump includes a swash plate directly coupled to and positioned by an electric motor. A transducer responds to the position of the swash plate and generates a feedback signal to balance out the effect of the electronic control signal. A pressurized reservoir supplies a base pressure to the hydraulic system when the swash plate of the variable displacement servo pump is in a neutral or null position. This reservoir is protected against an over pressure by a check valve. To compensate for unequal chamber volumes in the power actuator, a shuttle valve diverts excess fluid from the larger volume chamber to the reservoir.
摘要翻译：液压系统中的动力执行器根据电动控制信号进行控制，电子控制信号激励与功率致动器互连的可变排量伺服泵。在液压系统中，可变排量伺服泵包括直接联接到电动机并由电动机定位的斜盘。传感器响应于斜盘的位置并产生反馈信号以平衡电子控制信号的影响。当可变排量伺服泵的斜盘处于中性或零位置时，加压的储存器向液压系统提供基础压力。该储存器通过止回阀防止过压。为了补偿动力执行器中的不相等的室体积，梭阀将多余的流体从较大的容积室转移到储存器。

6. 发明授权

US2667746A Steering apparatus 失效
标题翻译：转向装置
公开(公告)号：US2667746A
公开(公告)日：1954-02-02
申请号：US36118953
申请日：1953-06-12
申请人： AMERICAN ENG CO LTD
发明人： KUMPF AUGUST W , HARVEY THOMAS A
IPC分类号： B63H25/22 , B63H25/30 , F15B9/04
CPC分类号： B63H25/30 , B63H25/22 , F15B9/04

7. 发明申请

US20190162208A1 Electro-hydrostatic drive system 审中-公开
公开(公告)号：US20190162208A1
公开(公告)日：2019-05-30
申请号：US16320915
申请日：2017-07-14
申请人： MOOG GmbH
发明人： Werner HAENDLE , Achim HELBIG , Tino KENTSCHKE , Reiner KOHLHAS , Klaus KIRCH
IPC分类号： F15B9/04 , F15B7/00 , F15B1/02 , F15B15/18
摘要： The present invention relates to an electro-hydrostatic system (1) with a hydraulic machine (11) which is driven by an electric motor (10) and has a variable volume and/or rotational speed for providing a volumetric flow rate of a hydraulic fluid, a differential cylinder (20) with a piston surface and with an annular surface, and at least one equalization container (30, 37), wherein the drive system (1) has a closed hydraulic circuit and during operation has an overpressure relative to the environment by means of the hydraulic machine (11) and/or a pretensioning source (15, 37), and the drive system (1) provides a movement of the cylinder in a first direction by means of a volumetric flow rate of the hydraulic machine (11) and a volumetric flow rate from the equalization container (30, 37), and provides a movement in a second direction by means of a volumetric flow rate of the hydraulic machine (11) and a volumetric flow rate into the equalization container (30, 37), and a power operating mode and a speed operating mode are provided with the differential cylinder (20).

8. 发明授权

US09303659B2 Method of controlling the flow rate of a variable capacity hydraulic pump for a construction apparatus 有权
标题翻译：控制施工设备的可变容量液压泵的流量的方法
公开(公告)号：US09303659B2
公开(公告)日：2016-04-05
申请号：US13994857
申请日：2010-12-28
申请人： Hung-Ju Shin
发明人： Hung-Ju Shin
IPC分类号： E02F9/22 , F15B9/04 , F15B11/042
CPC分类号： F15B9/04 , E02F9/2235 , E02F9/2285 , E02F9/2296 , F15B11/0423 , F15B2211/20546 , F15B2211/255 , F15B2211/6309 , F15B2211/6346 , F15B2211/6652 , F15B2211/6654 , F15B2211/6655
摘要： Disclosed is a method of controlling the flow rate of a hydraulic pump, which controls the discharge flow rate in proportion to a manipulated amount of a manipulation lever operated by a user even when the discharge pressure of the hydraulic pump is varied. The method of controlling the flow rate of a variable capacity hydraulic pump for a construction apparatus according to the present invention includes: a first step of calculating the required flow rate of the variable capacity hydraulic pump according to a manipulated amount of a manipulation lever operated by a user; a second step of calculating the maximum discharge flow rate within a range equal to or less than a preset horsepower or torque of the variable capacity hydraulic pump corresponding to the pressure detected by a discharge pressure detecting sensor; and a third step of controlling the discharge flow rate of the variable capacity hydraulic pump in proportion to a manipulated amount of the manipulation lever within a range equal to or less than the maximum discharge flow rate set in the second step.
摘要翻译：公开了一种控制液压泵的流量的方法，即使当液压泵的排出压力变化时，液压泵的流量与用户操作的操纵杆的操纵量成比例地控制排出流量。根据本发明的用于施工设备的可变容量液压泵的流量控制方法包括：第一步骤，根据由操作杆操作的操纵杆的操纵量计算可变容量液压泵的所需流量用户; 在与由排出压力检测传感器检测出的压力对应的可变容量液压泵的预设马力或扭矩以下的范围内计算最大排出流量的第二步骤; 以及在等于或小于在第二步骤中设定的最大排出流量的范围内的情况下，将可变容量液压泵的排出流量与操作杆的操作量成比例地控制的第三步骤。

9. 发明申请

US20150204358A1 HYDRAULIC SYSTEM FOR EXTREME CLIMATES 有权
标题翻译：极端气候的液压系统
公开(公告)号：US20150204358A1
公开(公告)日：2015-07-23
申请号：US14600521
申请日：2015-01-20
申请人： POSI-PLUS TECHNOLOGIES INC.
发明人： JEAN-FRANCOIS ST-YVES
IPC分类号： F15B9/04 , F15B19/00 , F15B13/06 , B60K25/00 , F15B1/26
CPC分类号： B60K25/00 , F15B21/042 , F15B2013/0413 , F15B2211/20546 , F15B2211/3105 , F15B2211/3111 , F15B2211/3116 , F15B2211/327 , F15B2211/6343 , F15B2211/6654 , F16H61/40
摘要： A method of operating a hydraulic system and hydraulic system for raising and lowering a boom in extreme climates. When the temperature is below a low temperature the system is operated open center while a variable displacement pump providing a constant flow of hydraulic fluid. When the temperature is between the low temperature and a moderate temperature the variable displacement pump provides at least a minimum flow of hydraulic fluid to the system, and the minimum flow decreases linearly with an increase of the temperature. When the temperature is above the moderate temperature, the system is operated closed center while maintaining at least a system pressure when in neutral and wherein the variable displacement pump provides hydraulic fluid to the actuator when a control valve is actuated.
摘要翻译：一种操作液压系统和液压系统的方法，用于在极端气候中升高和降低起重臂。当温度低于低温时，系统操作开放中心，而可变排量泵提供恒定的液压流体流量。当温度处于低温和中等温度之间时，可变排量泵至少提供液压流体到系统的最小流量，最小流量随着温度的升高而线性减小。当温度高于中等温度时，系统在闭合中心运行，同时在空档时至少保持系统压力，并且当控制阀被致动时，可变排量泵向致动器提供液压流体。

10. 发明申请

US20130133970A1 Electrically-Operated Hydraulic Actuator Unit and Hydraulic Four-Wheel-Drive Work Vehicle 有权
标题翻译：电动液压执行器和液压四轮驱动工作车
公开(公告)号：US20130133970A1
公开(公告)日：2013-05-30
申请号：US13814108
申请日：2011-07-21
申请人： Minoru Kamada , Nobuhiko Ichinose
发明人： Minoru Kamada , Nobuhiko Ichinose
IPC分类号： B60K23/08 , F16H61/425 , F15B9/04
CPC分类号： B60K23/08 , B60Y2200/223 , F03C1/0636 , F03C1/0686 , F04B1/324 , F15B9/04 , F16H61/425
摘要： Provided an electrically-operated hydraulic actuator unit that includes an electrically-operated motor controlled by a control apparatus and actuating a volume adjusting mechanism through driving-side and driven-side arms, and a clutch mechanism in which the driven-side arm presses a contact member against a clutch case so that the driven-side arm is locked when a force from the volume adjusting mechanism is applied to the driven-side arm. The control apparatus can set duties of first to fourth drive signals to be output to the electrically-operated motor in a neutral-side start period, a neutral-side ordinary actuation period, a higher-volume-side start period and a higher-volume-side ordinary actuation period. The duties of the first and fourth drive signals are larger than that of the second drive signal, the duty of the third drive signal is larger than that of the fourth drive signal, and an integrated ON-time of the third drive signal is larger than that of the first drive signal.
摘要翻译：提供一种电动液压致动器单元，其包括由控制装置控制的电动马达，并且通过驱动侧和从动臂驱动音量调节机构，以及离合器机构，其中从动侧臂压接触点抵靠离合器壳体的构件，使得当来自音量调节机构的力被施加到从动侧臂时，从动侧臂被锁定。控制装置可以在中立侧起动期间，中立侧通常动作期间，较大容量侧起动期间和较高转速时设定输出到电动马达的第一至第四驱动信号的作用在正常的启动周期。第一驱动信号和第四驱动信号的功率大于第二驱动信号的功率，第三驱动信号的占空比大于第四驱动信号的占空比，并且第三驱动信号的积分导通时间大于第一个驱动信号。

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