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公开(公告)号：US20130228245A1
公开(公告)日：2013-09-05
申请号：US13885093
申请日：2010-11-25
申请人： Bon-Seuk Ku , Hea-Gyoon Joung , Man-Seuk Jeon
发明人： Bon-Seuk Ku , Hea-Gyoon Joung , Man-Seuk Jeon
CPC分类号： F15B13/026 , E02F9/2267 , F15B13/0418 , F15B13/06 , F16K11/0716 , Y10T137/8671
摘要： A flow control valve for a construction machine is provided, which can constantly control a flow rate of hydraulic fluid supplied to a hydraulic actuator through a flow control spool in a spool. The flow control valve for a construction machine, having a valve body in which a supply passage communicating with a pump passage and actuator ports connected to a hydraulic actuator are formed, and a spool installed in the valve body to be shifted, includes a flow control spool shifted in the spool to variably control a cross-sectional area of a passage connected to the one actuator port if a flow rate of the hydraulic fluid that flows through the supply passage is higher than a set flow rate, a first passage formed on the spool to communicate with the supply passage and a second passage formed on the spool to communication with the one actuator port and having a cross-sectional area that is varied depending on the shifting of the flow control spool.
摘要翻译： 提供了一种用于建筑机械的流量控制阀，其可以通过阀芯中的流量控制阀轴来恒定地控制供给液压致动器的液压流体的流量。 一种用于建筑机械的流量控制阀，其具有阀体，其中形成有与泵通道连通的供给通道和连接到液压致动器的致动器端口的阀体，以及安装在要移动的阀体中的阀芯，包括流量控制 如果流经供应通道的液压流体的流量高于设定的流量，则阀芯在阀芯中移动以可变地控制连接到一个致动器端口的通道的横截面积，第一通道形成在 卷轴与供给通道连通，第二通道形成在卷轴上以与一个致动器端口连通并且具有根据流量控制卷轴的移位而变化的横截面积。
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公开(公告)号：US09103355B2
公开(公告)日：2015-08-11
申请号：US13885093
申请日：2010-11-25
申请人： Bon-Seuk Ku , Hea-Gyoon Joung , Man-Seuk Jeon
发明人： Bon-Seuk Ku , Hea-Gyoon Joung , Man-Seuk Jeon
CPC分类号： F15B13/026 , E02F9/2267 , F15B13/0418 , F15B13/06 , F16K11/0716 , Y10T137/8671
摘要： A flow control valve for a construction machine is provided, which can constantly control a flow rate of hydraulic fluid supplied to a hydraulic actuator through a flow control spool in a spool. The flow control valve for a construction machine, having a valve body in which a supply passage communicating with a pump passage and actuator ports connected to a hydraulic actuator are formed, and a spool installed in the valve body to be shifted, includes a flow control spool shifted in the spool to variably control a cross-sectional area of a passage connected to the one actuator port if a flow rate of the hydraulic fluid that flows through the supply passage is higher than a set flow rate, a first passage formed on the spool to communicate with the supply passage and a second passage formed on the spool to communication with the one actuator port and having a cross-sectional area that is varied depending on the shifting of the flow control spool.
摘要翻译： 提供了一种用于建筑机械的流量控制阀，其可以通过阀芯中的流量控制阀轴来恒定地控制供给液压致动器的液压流体的流量。 一种用于建筑机械的流量控制阀，其具有阀体，其中形成有与泵通道连通的供给通道和连接到液压致动器的致动器端口的阀体，以及安装在要移动的阀体中的阀芯，包括流量控制 如果流经供应通道的液压流体的流量高于设定的流量，则阀芯在阀芯中移动以可变地控制连接到一个致动器端口的通道的横截面积，第一通道形成在 卷轴与供给通道连通，第二通道形成在卷轴上以与一个致动器端口连通并且具有根据流量控制卷轴的移位而变化的横截面积。
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公开(公告)号：US09651063B2
公开(公告)日：2017-05-16
申请号：US14349452
申请日：2011-10-07
申请人： Hea-Gyoon Joung , Young-Bog Song
发明人： Hea-Gyoon Joung , Young-Bog Song
CPC分类号： F15B13/021 , E02F9/2037 , E02F9/2225 , E02F9/2228 , E02F9/2282 , E02F9/2285 , E02F9/2292 , E02F9/2296 , F02D29/04 , F15B11/16 , F15B2211/20546 , F15B2211/3116
摘要： Disclosed is a lower track for mounting rubber pads on a track shoe to be attachable and detachable after assembling a steel plate which is adhered with divisionally formed rubber pads as a single unit without additionally perforating coupling through-holes in the track shoe when the rubber pad which forms the lower track and the track shoe which is formed of a metal material are coupled. The lower track of a crawler excavator according to the present invention comprises: first and second rubber pads which are divisionally formed; a first steel plate which supports the bottom surface of the first rubber pad by surrounding the same, and has first hooks formed on the bottom surface thereof and coupling holes formed in a connection stepped-portion.
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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。
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公开(公告)号：US10428491B2
公开(公告)日：2019-10-01
申请号：US15565701
申请日：2015-04-29
发明人： Hea-Gyoon Joung , Jin-Young Tak
摘要： A flow rate control apparatus for construction equipment includes: a boom cylinder driven by hydraulic fluid; a first control valve for controlling a hydraulic fluid flow supplied to the boom cylinder; an option actuator driven by hydraulic fluid; a second control valve for controlling a hydraulic fluid flow supplied to the option actuator; a boom cylinder manipulation lever and an option actuator manipulation lever; a confluence line selectively confluence the hydraulic fluid supplied to the boom cylinder with the hydraulic fluid of the option actuator; a center bypass switching valve provided at the furthest downstream side of a fluid supply path of the first hydraulic pump; a confluence switching valve selectively opening and closing the confluence line; a confluence selection valve applying a pilot pressure to the confluence switching valve; and a controller for controlling the confluence selection valve.
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公开(公告)号：US10337170B2
公开(公告)日：2019-07-02
申请号：US15519842
申请日：2014-11-05
发明人： Hea-Gyoon Joung , Sung-Gon Kim
摘要： A straight traveling apparatus for a construction machine and a control method thereof are provided which can allow a curved travel when the working device is operated during the curved travel.
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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。
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公开(公告)号：US20130098021A1
公开(公告)日：2013-04-25
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
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。
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公开(公告)号：US09790965B2
公开(公告)日：2017-10-17
申请号：US14768285
申请日：2013-02-19
发明人： Hea-Gyoon Joung , Sung-Gon Kim
IPC分类号： F15B11/04 , F15B11/042 , E02F9/22 , F15B20/00
CPC分类号： F15B11/0423 , E02F9/2235 , E02F9/226 , E02F9/2296 , F15B20/00 , F15B2211/20546 , F15B2211/3116 , F15B2211/40 , F15B2211/45 , F15B2211/611 , F15B2211/62 , F15B2211/6343 , F15B2211/6652
摘要： A hydraulic system for a construction machine having a protection device is disclosed, which can limit a flow rate of hydraulic fluid that is discharged from a hydraulic pump in accordance with a hydraulic fluid temperature and notify an operator of information on the hydraulic fluid temperature. The hydraulic system for a construction machine includes a hydraulic actuator operated by hydraulic fluid that is supplied from a hydraulic pump; a control valve installed in a flow path between the hydraulic pump and the hydraulic actuator to control a flow rate of the hydraulic fluid that is supplied from the hydraulic pump to the hydraulic actuator; an oil cooler installed in a return flow path from the control valve to an hydraulic fluid tank to cool the hydraulic fluid; a hydraulic fluid temperature sensor detecting in real time a hydraulic fluid temperature of the hydraulic fluid tank; a hydraulic pump regulator controlling a discharge flow rate of the hydraulic pump through adjustment of an inclination angle of a swash plate of the hydraulic pump; and a controller comparing the hydraulic fluid temperature detected by the hydraulic fluid temperature sensor with a predetermined hydraulic fluid temperature, and outputting a control signal to the hydraulic pump regulator so as to limit the discharge flow rate of the hydraulic pump to or below a predetermined flow rate if the detected hydraulic fluid temperature is equal to or lower than a predetermined lower limit value, or equal to or higher than a predetermined upper limit value.
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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
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。
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