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1. 发明授权

US09790965B2 Hydraulic system for construction machine, provided with protection device 有权
公开(公告)号：US09790965B2
公开(公告)日：2017-10-17
申请号：US14768285
申请日：2013-02-19
申请人： VOLVO CONSTRUCTION EQUIPMENT AB , Hea-Gyoon Joung , Sung-Gon Kim
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.

2. 发明授权

US09303636B2 System for controlling hydraulic pump in construction machine 有权
标题翻译：施工机械液压泵控制系统
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。

3. 发明申请

US20160003265A1 HYDRAULIC SYSTEM FOR CONSTRUCTION MACHINE, PROVIDED WITH PROTECTION DEVICE 有权
标题翻译：建筑机械液压系统，具有保护装置
公开(公告)号：US20160003265A1
公开(公告)日：2016-01-07
申请号：US14768285
申请日：2013-02-19
申请人： Hea-Gyoon JOUNG , Sung-Gon KIM , VOLVO CONSTRUCTION EQUIPMENT AB
发明人： Hea-Gyoon JOUNG , Sung-Gon KIM
IPC分类号： F15B11/042 , 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.
摘要翻译：公开了一种用于具有保护装置的施工机械的液压系统，其可以根据液压流体温度限制从液压泵排出的液压流体的流量，并且向操作者通知关于液压流体温度的信息。用于建筑机械的液压系统包括由液压泵供应的液压流体操作的液压致动器; 安装在所述液压泵和所述液压致动器之间的流路中的控制阀，以控制从所述液压泵向所述液压致动器供给的所述液压流体的流量; 安装在从控制阀到液压油箱的回流路径中以冷却液压流体的油冷却器; 液压油温度传感器实时检测液压油箱的液压油温度; 液压泵调节器，其通过调节所述液压泵的斜板的倾斜角度来控制所述液压泵的排出流量; 以及控制器，将由液压流体温度传感器检测的液压流体温度与预定的液压流体温度进行比较，并将控制信号输出到液压泵调节器，以将液压泵的排出流量限制在或低于预定流量如果检测到的液压流体温度等于或低于预定的下限值，或者等于或高于预定的上限值的速率。

4. 发明申请

US20140245730A1 PRIORITY CONTROL SYSTEM FOR CONSTRUCTION MACHINE 有权
标题翻译：建筑机械优先控制系统
公开(公告)号：US20140245730A1
公开(公告)日：2014-09-04
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
IPC分类号： F15B13/02
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.
摘要翻译：公开了一种用于将橡胶垫安装在履带板上的下轨道，用于在组装钢板之后可附接和拆卸，该钢板以分开形成的橡胶垫作为单个单元，而不需要在履带板中另外穿孔耦合通孔，当橡胶垫其形成下轨道，并且由金属材料形成的履带板被联接。根据本发明的履带式挖掘机的下轨道包括：分开形成的第一和第二橡胶垫; 第一钢板，其通过围绕其而支撑第一橡胶垫的底面，并且具有形成在其底表面上的第一钩和形成在连接阶梯部中的联接孔。

5. 发明授权

US08818651B2 Flow control system for a hydraulic pump of construction machinery 有权
标题翻译：工程机械液压泵流量控制系统
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。

6. 发明授权

US09651063B2 Priority control system for construction machine 有权
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
IPC分类号： F15B11/00 , F15B13/02 , F02D29/04 , E02F9/22 , F15B11/16 , E02F9/20
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.

7. 发明申请

US20130121852A1 SYSTEM FOR CONTROLLING HYDRAULIC PUMP IN CONSTRUCTION MACHINE 有权
标题翻译：建筑机械液压泵控制系统
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。

8. 发明授权

US10337170B2 Driving straight ahead device for construction machine and control method therefor 有权
公开(公告)号：US10337170B2
公开(公告)日：2019-07-02
申请号：US15519842
申请日：2014-11-05
申请人： VOLVO CONSTRUCTION EQUIPMENT AB , Hea-Gyoon Joung
发明人： Hea-Gyoon Joung , Sung-Gon Kim
IPC分类号： E02F9/20 , E02F9/22 , E02F9/02 , F15B11/17
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.

9. 发明授权

US09103355B2 Flow control valve for construction machine 有权
标题翻译：施工机械流量控制阀
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
IPC分类号： F16K11/07 , F15B13/02 , E02F9/22 , F15B13/04 , F15B13/06
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。

10. 发明申请

US20130103270A1 FLOW CONTROL SYSTEM FOR A HYDRAULIC PUMP OF CONSTRUCTION MACHINERY 有权
标题翻译：建筑机械液压泵流量控制系统
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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