公开(公告)号：US09194382B2

公开(公告)日：2015-11-24

申请号：US13700969

申请日：2010-06-24

申请人： Hung-Ju Shin ,  Hea-Gyoon Joung ,  Sang-Hee Lee

发明人： Hung-Ju Shin ,  Hea-Gyoon Joung ,  Sang-Hee Lee

IPC分类号： F04B9/10 ,  E02F9/22 ,  F04B27/14 ,  E02F9/12 ,  F15B11/042

CPC分类号： F04B9/10 ,  E02F9/123 ,  E02F9/2235 ,  E02F9/2253 ,  E02F9/2285 ,  E02F9/2296 ,  F04B27/14 ,  F15B11/0423 ,  F15B2211/20546 ,  F15B2211/255 ,  F15B2211/26 ,  F15B2211/6309 ,  F15B2211/6346 ,  F15B2211/6652 ,  F15B2211/6654 ,  F15B2211/6655 ,  F15B2211/7058 ,  F15B2211/851

摘要： A hydraulic pump control system provided in a construction machine such as an excavator is provided. According to the hydraulic pump control system, a loss of a flow rate is reduced by initially supplying hydraulic fluid as much as necessary from a hydraulic pump to a hydraulic motor in order to accelerate a swing movement of an upper frame against a lower traveling structure or to make an upper swing structure swing.

摘要翻译： 提供了一种设置在诸如挖掘机的施工机械中的液压泵控制系统。 根据液压泵控制系统，通过从液压泵向液压马达最初提供必要的液压流体来减少流量的损失，以加速上框架相对于下行进结构的摆动运动，或 使上摆动摆动。

公开(公告)号：US20130160439A1

公开(公告)日：2013-06-27

申请号：US13821452

申请日：2010-09-09

申请人： Sang-Hee Lee ,  Hea-Gyoon Joung ,  Hung-Ju Shin

发明人： Sang-Hee Lee ,  Hea-Gyoon Joung ,  Hung-Ju Shin

IPC分类号： F04B13/00

CPC分类号： E02F9/2235 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2296 ,  F15B2211/20546 ,  F15B2211/255 ,  F15B2211/6346 ,  F15B2211/88

摘要： The present invention pertains to a hydraulic pressure control device of a variable displacement type hydraulic pump for construction equipment, wherein operable sections of operation systems are formed in a wide manner while the hydraulic pump discharges a relatively small flow rate compared with the operation amount of the respective operation systems in the case of complex operations, so as to improve the pressure loss and the fuel ratio of the hydraulic pump. The device includes a flow rate controller, which is preferably connected to an operation amount detecting means and a swash plate control device, and receives operation signals from the operation system of a control device that are detected by the operation amount detecting means so as to control the discharge flow rate of the hydraulic pump. In the case of the complex operations, the flow rate controller pre-determines the required flow rate of an actuator for the respective operation systems via the operation signals of the operation systems and subsequently operates the square root of the sum of the squares of the respective required flow rates so as to determine the discharge flow rate of the hydraulic pump, thereby controlling the swash plate control device.

摘要翻译： 本发明涉及一种用于施工设备的可变排量型液压泵的液压控制装置，其中操作系统的可操作部分以宽的方式形成，同时液压泵与其操作量相比排出相对较小的流量 在复杂操作的情况下各自的操作系统，以便提高液压泵的压力损失和燃料比。 该装置包括流量控制器，其优选地连接到操作量检测装置和斜盘控制装置，并且从操作量检测装置检测到的控制装置的操作系统接收操作信号，以便控制 液压泵的排放流量。 在复杂操作的情况下，流量控制器经由操作系统的操作信号预先确定各个操作系统的致动器的所需流量，并且随后操作各自的操作信号的平方和的平方根 以确定液压泵的排出流量，从而控制斜盘控制装置。

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。

公开(公告)号：US09303636B2

公开(公告)日：2016-04-05

申请号：US13810824

申请日：2010-07-19

申请人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

发明人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

IPC分类号： F16D31/02 ,  F04B39/00 ,  E02F9/22 ,  F04B49/08

CPC分类号： F04B39/00 ,  E02F9/2214 ,  E02F9/2232 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2285 ,  E02F9/2296 ,  F04B49/08 ,  F04B2205/05 ,  F15B2211/253 ,  F15B2211/6309 ,  F15B2211/6346

摘要： Disclosed is a system for controlling a hydraulic pump in a construction machine which can reduce the discharge flow of the hydraulic pump in proportion to the load pressure of the hydraulic pump to enhance operability by the driver. The present invention provides the system for controlling the hydraulic pump in the construction machine, which is characterized by detecting the discharge pressure of the hydraulic pump and the operation activity of an operation lever, and comparing the detected discharge pressure of the hydraulic pump and a predetermined pressure value, and when the detected discharge pressure exceeds the predetermined pressure value, the maximum dischargeable flow of the hydraulic pump is reduced in proportion to the difference between the detected pressure and the predetermined pressure value.

摘要翻译： 公开了一种用于控制施工机械中的液压泵的系统，其能够与液压泵的负载压力成比例地减小液压泵的排出流量，从而提高驾驶员的操作性。 本发明提供了一种用于控制建筑机械中的液压泵的系统，其特征在于检测液压泵的排出压力和操作杆的操作活动，并将检测到的液压泵的排出压力与预定的 压力值，并且当检测到的排出压力超过预定压力值时，液压泵的最大可排放流量与检测到的压力和预定压力值之间的差成比例地减小。

公开(公告)号：US20150219127A1

公开(公告)日：2015-08-06

申请号：US14419370

申请日：2012-08-27

申请人： Hung-Ju Shin ,  Byeong-Soo Kim

发明人： Hung-Ju Shin ,  Byeong-Soo Kim

IPC分类号： F15B21/08 ,  F15B13/04 ,  F15B13/02 ,  F15B13/06 ,  E02F9/22 ,  E02F9/20

CPC分类号： F15B21/08 ,  E02F9/2004 ,  E02F9/2242 ,  E02F9/2267 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/166 ,  F15B13/022 ,  F15B13/0402 ,  F15B13/06 ,  F15B2211/20576 ,  F15B2211/329 ,  F15B2211/355 ,  F15B2211/36 ,  F15B2211/6316 ,  F15B2211/781 ,  F15B2211/782 ,  Y10T137/8671

摘要： A hydraulic system for a construction machine is provided, which enables a user to set or release a preferential function when an excavation work or leveling work using an excavator is performed. The hydraulic system for a construction machine includes first and second hydraulic pumps connected to an engine; first and second hydraulic actuators connected to the first and second hydraulic pumps; main control valves (MCV) installed in flow paths between the first and second hydraulic pumps and the first and second hydraulic actuators, respectively, and having spools shifted to control a start, a stop, and a direction change of the first and second hydraulic actuators; first and second operation levers outputting operation signals in proportion to a user's operation amount; a control device limiting a flow rate that is applied to the spool of any one of the first and second hydraulic actuators that share the first and second hydraulic pumps according to a user's operation of the first or second operation lever for a preferential function; and a control unit controlling driving of the control device so as to shift to or release the preferential function according to a user's determination.

摘要翻译： 提供了一种用于建筑机械的液压系统，当进行挖掘作业或使用挖掘机的调平作业时，能够使用户设定或释放优先功能。 用于建筑机械的液压系统包括连接到发动机的第一和第二液压泵; 连接到第一和第二液压泵的第一和第二液压致动器; 分别安装在第一和第二液压泵以及第一和第二液压致动器之间的流动路径中的主控制阀（MCV），并且具有换档的阀芯，以控制第一和第二液压致动器的起动，停止和方向改变 ; 第一和第二操作杆与用户的操作量成比例地输出操作信号; 控制装置，用于根据用户对第一或第二操作杆的优先功能的操作来限制施加到第一和第二液压致动器中的任何一个的卷轴的流量，共享第一和第二液压泵; 以及控制单元，控制所述控制装置的驱动，以便根据用户的确定转移到或者释放所述优先功能。

公开(公告)号：US08818651B2

公开(公告)日：2014-08-26

申请号：US13700980

申请日：2010-06-28

申请人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

发明人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

IPC分类号： G06F19/00 ,  F15B15/00 ,  F04B49/00

CPC分类号： E02F9/2235 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/055 ,  F15B2211/6309 ,  F15B2211/6316

摘要： A flow control system for a hydraulic pump of a construction machine that can variably control a discharge flow rate of the hydraulic pump in accordance with load pressure generated by a hydraulic actuator. According to the system, the discharge pressure of the hydraulic pump and the operation rate of the operation lever for the hydraulic actuators is detected, and standard load pressures of the respective hydraulic actuators are set. If the discharge pressure of the hydraulic pump is higher than preset load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is reduced in proportion to the operation rate in accordance with degrees of loads generated by the hydraulic actuators. If the discharge pressure of the hydraulic pump is lower than the standard load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is controlled in proportion to the operation rate.

摘要翻译： 一种用于建筑机械的液压泵的流量控制系统，其可以根据由液压致动器产生的负载压力可变地控制液压泵的排出流量。 根据该系统，检测液压泵的排出压力和液压致动器的操作杆的操作速度，并且设定各个液压致动器的标准负载压力。 如果液压泵的排出压力高于液压致动器的预设负载压力，则液压泵的排出流量与根据液压致动器产生的负载的程度与运行速率成比例地减小。 如果液压泵的排出压力低于液压致动器的标准负荷压力，则液压泵的排出流量与操作速率成比例地控制。

公开(公告)号：US20130263583A1

公开(公告)日：2013-10-10

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： F15B9/04

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。

公开(公告)号：US20130121852A1

公开(公告)日：2013-05-16

申请号：US13810824

申请日：2010-07-19

申请人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

发明人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

IPC分类号： F04B39/00

CPC分类号： F04B39/00 ,  E02F9/2214 ,  E02F9/2232 ,  E02F9/2235 ,  E02F9/2242 ,  E02F9/2285 ,  E02F9/2296 ,  F04B49/08 ,  F04B2205/05 ,  F15B2211/253 ,  F15B2211/6309 ,  F15B2211/6346

摘要： Disclosed is a system for controlling a hydraulic pump in a construction machine which can reduce the discharge flow of the hydraulic pump in proportion to the load pressure of the hydraulic pump to enhance operability by the driver. The present invention provides the system for controlling the hydraulic pump in the construction machine, which is characterized by detecting the discharge pressure of the hydraulic pump and the operation activity of an operation lever, and comparing the detected discharge pressure of the hydraulic pump and a predetermined pressure value, and when the detected discharge pressure exceeds the predetermined pressure value, the maximum dischargeable flow of the hydraulic pump is reduced in proportion to the difference between the detected pressure and the predetermined pressure value.

摘要翻译： 公开了一种用于控制施工机械中的液压泵的系统，其能够与液压泵的负载压力成比例地减小液压泵的排出流量，从而提高驾驶员的操作性。 本发明提供了一种用于控制建筑机械中的液压泵的系统，其特征在于检测液压泵的排出压力和操作杆的操作活动，并将检测到的液压泵的排出压力与预定的 压力值，并且当检测到的排出压力超过预定压力值时，液压泵的最大可排放流量与检测到的压力和预定压力值之间的差成比例地减小。

公开(公告)号：US20160145835A1

公开(公告)日：2016-05-26

申请号：US14899875

申请日：2013-06-26

申请人： Jin-Wook KIM ,  Sang-Hee LEE ,  Hung-Ju SHIN ,  VOLVO CONSTRUCTION EQUIPMENT AB

发明人： Jin-Wook KIM ,  Sang-Hee LEE ,  Hung-Ju SHIN

IPC分类号： E02F9/22 ,  F15B13/04 ,  F15B11/08 ,  E02F9/26 ,  E02F9/20

CPC分类号： E02F9/2228 ,  E02F9/2004 ,  E02F9/2235 ,  E02F9/2271 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  E02F9/26 ,  F15B11/042 ,  F15B11/08 ,  F15B13/0401 ,  F15B2211/20546 ,  F15B2211/255 ,  F15B2211/30525 ,  F15B2211/405 ,  F15B2211/41572 ,  F15B2211/426 ,  F15B2211/6343 ,  F15B2211/6346 ,  F15B2211/66 ,  F15B2211/665 ,  F15B2211/6652

摘要： An apparatus and method for controlling a control valve, and a method for controlling a discharge flow rate of a hydraulic pump for a construction machine are disclosed, which can control a spool shifting speed of a directional valve and a discharge flow rate of a hydraulic pump in accordance with a hydraulic fluid temperature in winter season with below zero temperatures. The apparatus for controlling a control valve includes a variable displacement hydraulic pump; a hydraulic actuator driven by hydraulic fluid that is supplied from the hydraulic pump; a control valve installed in a flow path between the hydraulic pump and the hydraulic actuator and shifted to control a start, stop, and direction change of the hydraulic actuator; an operation lever outputting an operation signal corresponding to an operation amount; a temperature sensor detecting a hydraulic fluid temperature of a hydraulic fluid tank connected to the hydraulic pump; and a controller applying a control signal that corresponds to the operation amount of the operation lever 3 to the control valve if the hydraulic fluid temperature detected through a signal from the temperature sensor is higher than a predetermined temperature, and adjusting the operation signal according to the operation amount of the operation lever in a predetermined increment rate to correspond to the detected hydraulic fluid temperature and applying the adjusted control signal to the control valve if the hydraulic fluid temperature detected through the signal from the temperature sensor is lower than the predetermined temperature.

摘要翻译： 公开了一种用于控制控制阀的装置和方法，以及用于控制建筑机械的液压泵的排出流量的方法，其可以控制方向阀的阀芯移位速度和液压泵的排出流量 按照冬季低于零温度的液压油温度。 用于控制控制阀的装置包括可变排量液压泵; 由液压泵供给的由液压流体驱动的液压致动器; 安装在液压泵和液压致动器之间的流路中的控制阀，并移动以控制液压致动器的起动，停止和方向变化; 操作杆，输出对应于操作量的操作信号; 检测与液压泵连接的液压油箱的液压油温度的温度传感器; 以及如果通过来自温度传感器的信号检测到的液压流体温度高于预定温度，则控制器将与操作杆3的操作量对应的控制信号施加到控制阀，并且根据 如果通过来自温度传感器的信号检测到的液压流体温度低于预定温度，则操作杆的操作量以预定增量率对应于检测到的液压流体温度，并将调整后的控制信号施加到控制阀。

公开(公告)号：US20130103270A1

公开(公告)日：2013-04-25

申请号：US13700980

申请日：2010-06-28

申请人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

发明人： Hea-Gyoon Joung ,  Sang-Hee Lee ,  Hung-Ju Shin

IPC分类号： E02F9/22

CPC分类号： E02F9/2235 ,  E02F9/2285 ,  E02F9/2296 ,  F15B11/055 ,  F15B2211/6309 ,  F15B2211/6316

摘要： A flow control system of a hydraulic pump for a construction machine is provided, which can variably control a discharge flow rate of the hydraulic pump in accordance with load pressure generated by a hydraulic actuator such as a boom cylinder. According to the flow control system of a hydraulic pump, the discharge pressure of the hydraulic pump and the operation rate of the operation lever for the hydraulic actuators is detected, and standard load pressures of the respective hydraulic actuators are set. If the discharge pressure of the hydraulic pump is higher than the preset standard load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is proportionally reduced for the same operation rate in accordance with degrees of loads generated by the hydraulic actuators, while if the discharge pressure of the hydraulic pump is lower than the standard load pressures of the hydraulic actuators, the discharge flow rate of the hydraulic pump is controlled in proportion to the operation rate.

摘要翻译： 提供了一种用于建筑机械的液压泵的流量控制系统，其可以根据由诸如动臂缸的液压致动器产生的负载压力可变地控制液压泵的排出流量。 根据液压泵的流量控制系统，检测液压泵的排出压力和液压致动器的操作杆的操作速度，并设定各液压致动器的标准负荷压力。 如果液压泵的排出压力高于液压致动器的预设标准负载压力，则液压泵的排出流量根据由液压致动器产生的负载的程度相同的运行速率成比例地减小，而 如果液压泵的排出压力低于液压致动器的标准负荷压力，则液压泵的排出流量与操作速率成比例地控制。