公开(公告)号：EP2947211B1

公开(公告)日：2018-09-26

申请号：EP13871736.8

申请日：2013-01-18

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  KIM, Sung-Gon

IPC分类号： E02F9/22 ,  F02D29/04 ,  F15B11/024 ,  F15B13/06

CPC分类号： F15B11/024 ,  E02F9/2217 ,  E02F9/2225 ,  E02F9/2228 ,  E02F9/2282 ,  E02F9/2296 ,  F15B13/026 ,  F15B13/027 ,  F15B2211/20546 ,  F15B2211/3133 ,  F15B2211/505

摘要： Disclosed are a flow control device and a flow control method for a construction machine for preventing the loss of fluid exhausted from a hydraulic pump when a boom and an arm of an excavator are operated in combination. The flow control device for a construction machine according to the present invention includes: an engine; a variable capacity hydraulic pump connected to the engine; a first hydraulic cylinder and a second hydraulic cylinder connected to the hydraulic pump; a first control valve disposed in a center bypass channel of the hydraulic pump, the first control valve, in neutral, returning the fluid exhausted from the hydraulic pump to a hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the first hydraulic cylinder; a second control valve disposed downstream of the center bypass channel of the hydraulic pump, the second control valve, in neutral, returning the fluid exhausted from the hydraulic pump to the hydraulic tank and, when switched, controlling the driving, stopping, and direction change of the second hydraulic cylinder; a regeneration fluid channel for supplementing and reusing fluid returned to the hydraulic tank during a compression stroke of the first hydraulic cylinder, and a regeneration valve disposed in the regeneration fluid channel; and a pressure-compensated flow control valve which is disposed in a meter-in fluid channel of a spool of the first control valve and limits the quantity of working fluid supplied from the hydraulic pump to the first hydraulic cylinder when the first hydraulic cylinder and the second hydraulic cylinder are operated in combination.

公开(公告)号：EP3290595A1

公开(公告)日：2018-03-07

申请号：EP15890793.1

申请日：2015-04-29

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  TAK, Jin-Young

IPC分类号： E02F9/20 ,  E02F9/22

CPC分类号： E02F3/962 ,  E02F9/20 ,  E02F9/22 ,  E02F9/2228 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/064 ,  F15B11/165 ,  F15B2211/20576 ,  F15B2211/45 ,  F15B2211/6313 ,  F15B2211/6316

摘要： Disclosed is a flow rate control apparatus for construction equipment, the apparatus including: 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.

摘要翻译： 公开了一种用于施工设备的流量控制装置，该装置包括：由液压流体驱动的动臂液压缸; 第一控制阀，用于控制供给到动臂油缸的液压流体流量; 由液压流体驱动的选项致动器; 第二控制阀，用于控制供给到所述可选致动器的液压流体流量; 动臂缸操纵杆和可选致动器操纵杆; 合流线选择性地将供给至动臂液压缸的液压流体与可选促动器的液压流体汇合; 设置在所述第一液压泵的流体供给路径的最下游侧的中心旁通切换阀; 合流开关阀，其选择性地打开和关闭合流线; 向合流切换阀施加先导压力的合流选择阀; 以及用于控制合流选择阀的控制器。

公开(公告)号：EP2587072A1

公开(公告)日：2013-05-01

申请号：EP10854132.7

申请日：2010-06-28

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  LEE, Sang-Hee ,  SHIN, Hung-Ju

IPC分类号： F15B9/04 ,  F15B9/08 ,  E02F9/22 ,  F15B13/043

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被控制。

公开(公告)号：EP3133211B1

公开(公告)日：2020-08-19

申请号：EP14889539.4

申请日：2014-04-15

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  LEE, Jae-Hoon ,  LEE, Sang-Hee

IPC分类号： E02F9/20 ,  E02F9/22 ,  F15B11/16 ,  F15B11/17 ,  F15B13/06 ,  F15B21/00

公开(公告)号：EP3133211A1

公开(公告)日：2017-02-22

申请号：EP14889539.4

申请日：2014-04-15

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  LEE, Jae-Hoon ,  LEE, Sang-Hee

IPC分类号： E02F9/20

CPC分类号： E02F9/2242 ,  E02F9/2232 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/166 ,  F15B11/17 ,  F15B13/06 ,  F15B21/008 ,  F15B2211/20576 ,  F15B2211/30595 ,  F15B2211/40507 ,  F15B2211/41509 ,  F15B2211/7135 ,  F15B2211/7142 ,  F15B2211/8606

摘要： Disclosed is a drive control device for the construction equipment capable of reducing shock generation and smoothly operating a work device when the work device is operated during the driving, which comprises; a first and second hydraulic pumps and a pilot pump, a first work device and a first drive motor operated by a hydraulic oil of the first hydraulic pump, a second work device and a second drive motor operated by a hydraulic oil of the second hydraulic pump, a first drive control valve and a first work device control valve that are provided on the supply path of the first hydraulic pump, a second drive control valve and a second work device control valve that are provided on the supply path of the second hydraulic pump, a linear drive control valve that is provided at the upper side of the supply path of the second hydraulic pump, a parallel path having an inlet branched and connected to the upper side of the supply path of the second hydraulic pump and an outlet connected to the inlet port of the second work device control valve, a branch path having an inlet branched and connected to a predetermined position of the parallel path and an outlet branched and connected to a path between the linear drive control valve and the second drive control valve, a fixed orifice provided on the branch path, and a first ratio control valve provided on a path between the pilot pump and the linear drive control valve.

摘要翻译： 公开了一种用于施工设备的驱动控制装置，其能够在行驶期间操作工作装置时减少产生冲击并平滑地操作作业装置，该装置包括： 第一和第二液压泵和先导泵，第一工作装置和由第一液压泵的液压油操作的第一驱动马达，第二作业装置和由第二液压泵的液压油操作的第二驱动马达 ，设置在第一液压泵的供给路径上的第一驱动控制阀和第一作业装置控制阀，第二驱动控制阀和第二作业装置控制阀，其设置在第二液压泵的供给路径上 设置在所述第二液压泵的供给路径的上侧的线性驱动控制阀，具有分支并连接到所述第二液压泵的供给路径的上侧的入口的并列路径， 第二工作装置控制阀的入口，具有分支并连接到并行路径的预定位置的入口的分支路径和分支并连接到t 线性驱动控制阀和第二驱动控制阀，设置在分支路径上的固定孔，以及设置在先导泵和直线驱动控制阀之间的路径上的第一比率控制阀。

公开(公告)号：EP2587074A1

公开(公告)日：2013-05-01

申请号：EP10853712.7

申请日：2010-06-24

申请人： Volvo Construction Equipment AB

发明人： SHIN, Hung-Ju ,  JOUNG, Hea-Gyoon ,  LEE, Sang-Hee

IPC分类号： F15B11/02 ,  E02F9/22 ,  F04B27/14 ,  F15B21/08

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： 提供设置在诸如挖掘机的建筑机械中的液压泵控制系统。 根据液压泵控制系统，通过首先将液压油从液压泵提供到液压马达，以便加速上部框架相对于下部行驶结构的摆动运动，从而降低流量损失，或者 使上摆动摆动。

公开(公告)号：EP2960529B1

公开(公告)日：2019-01-02

申请号：EP13875723.2

申请日：2013-02-19

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  KIM, Sung-Gon

IPC分类号： F15B20/00 ,  E02F9/22 ,  F15B13/02 ,  F15B11/042

公开(公告)号：EP3216927A1

公开(公告)日：2017-09-13

申请号：EP14905308.4

申请日：2014-11-05

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  KIM, Sung-Gon

IPC分类号： E02F9/02

CPC分类号： E02F9/2004 ,  E02F9/02 ,  E02F9/2037 ,  E02F9/2045 ,  E02F9/2225 ,  E02F9/2239 ,  E02F9/2242 ,  E02F9/225 ,  E02F9/2285 ,  E02F9/2292 ,  E02F9/2296 ,  F15B11/17

摘要： Disclosed are a straight traveling apparatus for a construction machine and a control method thereof, which can allow a curved travel when the working device is operated during the curved travel. The straight traveling apparatus comprises a first and a second variable displacement hydraulic pump and a pilot pump; a left travel motor and a first working device that are operated by the first hydraulic pump; a plurality of switch valve that are installed in the path of the first hydraulic pump and control the hydraulic oil supplied to the left travel motor or the first working device; a right travel motor and a second working device that are operated by the second hydraulic pump; a plurality of switch valve that are installed in the path of the second hydraulic pump and control the hydraulic oil supplied to the right travel motor or the second working device; a straight travel valve that is switched by the pilot pressure applied from an electrical control valve, and supplies the hydraulic oil of one of the first and second hydraulic pumps to the left and right travel motors while supplying the hydraulic oil of the other of the first and second hydraulic pumps to the left and right working devices; a pressure detection sensor for detecting the pilot pressure applied to the left and right travel motor switch valves and the pilot pressure applied to the first and second working device switch valves; and a controller that outputs the control signal to the electrical control valve so that the pilot pressure applied to the straight travel valve is blocked in case that the difference between the pilot pressures applied to the left and right travel motor switch valves is larger than the pre-set pressure value, when the first and second working devices are operated during the travel.

摘要翻译： 公开了一种用于施工机械的直行装置及其控制方法，其能够在弯曲行驶期间操作作业装置时允许弯曲行进。 直行装置包括第一和第二可变排量液压泵以及先导泵; 由第一液压泵操作的左行走马达和第一作业装置; 多个开关阀，所述开关阀安装在所述第一液压泵的路径中并且控制供应到所述左行驶马达或所述第一作业装置的液压油; 由第二液压泵操作的右行走马达和第二工作装置; 多个开关阀，其安装在第二液压泵的路径中并且控制供应到右行进马达或第二工作装置的液压油; 直行阀，其通过从电动控制阀施加的先导压力进行切换，并且将第一和第二液压泵中的一个的液压油供应​​到左和右行走马达，同时供应第一和第二液压泵中的另一个的液压油 第二液压泵连接到左和右工作装置; 压力检测传感器，用于检测施加到左右行驶马达转换阀的先导压力和施加到第一和第二作业装置转换阀的先导压力; 以及控制器，该控制器将控制信号输出到电控阀，以使得施加到直行阀的先导压力在施加到左行进马达切换阀和右行进马达切换阀的先导压力之间的差大于预先设定的阈值 - 当在行驶期间操作第一和第二工作装置时设定的压力值。

公开(公告)号：EP3015718A1

公开(公告)日：2016-05-04

申请号：EP13888326.9

申请日：2013-10-31

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  KIM, Sung-Gon

IPC分类号： F15B13/043 ,  E02F9/22 ,  F15B19/00

CPC分类号： E02F9/2207 ,  E02F9/2228 ,  E02F9/2242 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  F15B11/10 ,  F15B11/17 ,  F15B13/021 ,  F15B2211/20576 ,  F15B2211/30565 ,  F15B2211/3127 ,  F15B2211/31582 ,  F15B2211/6313 ,  F15B2211/6316 ,  F15B2211/665

摘要： Disclosed are a hydraulic circuit for using a hydraulic fluid in a hydraulic pump in another hydraulic actuator, during levelling and grading work by means of an excavator, and a method for controlling a floating function. A hydraulic circuit for construction machinery having a floating function, according to the present invention, is provided with: two or more hydraulic pumps; a hydraulic cylinder connected to the hydraulic pumps; a boom driving control valve provided on the flow path between the hydraulic pump on one side and the hydraulic cylinder; a boom confluence control valve provided on the flow path between the hydraulic pump on the other side and the hydraulic cylinder; an operating lever; a first sensor for measuring the hydraulic fluid pressure of a large chamber of the hydraulic cylinder; a second sensor for measuring the boom lowering pilot pressure applied to one end of the boom driving control valve; a control valve provided on the flow path between the operating lever and the other ends of the boom driving control valve and the boom confluence control valve.

摘要翻译： 本发明公开了一种液压电路，用于在另一液压致动器使用的液压流体在液压泵中，在地面平整工作由挖掘机的装置，以及用于控制浮动功能的方法。 用于具有浮动功能，gemäß对本发明的工程机械的液压回路，设置有：两个或多个液压泵; 连接到所述液压泵的液压缸; 设置在一侧的液压泵和液压缸之间的流动路径上的动臂驱动控制阀; 设置在另一侧和所述液压缸，液压泵之间的流动路径上的动臂合流控制阀; 操作杆的; 用于测量大腔室中的液压缸中的液压流体压力的第一传感器; 用于测量动臂下降施加于动臂驱动控制阀的一个端部的先导压力的第二传感器; 设置在操作杆和动臂驱动控制阀的另一端和起重臂合流控制阀之间的流动路径上的控制阀。

公开(公告)号：EP2772653A1

公开(公告)日：2014-09-03

申请号：EP11873593.5

申请日：2011-10-07

申请人： Volvo Construction Equipment AB

发明人： JOUNG, Hea-Gyoon ,  SONG, Young-Bog

IPC分类号： F15B13/043 ,  E02F9/22 ,  F15B13/02

CPC分类号： E02F9/22 ,  E02F3/42 ,  E02F9/123 ,  E02F9/2217 ,  E02F9/2225 ,  E02F9/2267 ,  E02F9/2282 ,  E02F9/2285 ,  E02F9/2292 ,  F15B11/17 ,  F15B2211/20546 ,  F15B2211/20576 ,  F15B2211/3116 ,  F15B2211/3133

摘要： Disclosed is a control system for controlling flow so as to allow simultaneous usage of a parallel flow path and a tandem flow path thereby reducing loss of pressure inside a control valve, when simultaneously operating work devices having different operating pressures. A control system for operating the work device, according to the present invention, provides the control system for operating the work device for a construction machine, comprising: first and second hydraulic pumps that are connected to an engine; a revolution control valve, an arm control valve, and a left driving control valve, which are installed on a first center bypass path of the first hydraulic pump, and each of which is connected via the parallel flow path; a boom control valve, a bucket control valve, and a right driving valve, which are installed on a second center bypass path of the second hydraulic pump, and each of which is connected via the parallel flow path; a pressure generation device; a bleed flow path, which is formed on a control spool at a lower side of a boom of the boom control valve, for maintaining an open state of the second center bypass path without closing same, when the boom control valve is switched so as to lower the boom; and a center bypass switch valve, which is installed on the lowermost side of the second center bypass path and is switched by means of a control signal for switching the boom control valve.

摘要翻译： 公开了一种用于控制流动的控制系统，以便当同时操作具有不同操作压力的工作装置时，允许同时使用并联流动路径和串联流动路径，从而减少控制阀内部的压力损失。 根据本发明的用于操作工作装置的控制系统提供了用于操作建筑机械的作业装置的控制系统，包括：连接到发动机的第一和第二液压泵; 旋转控制阀，臂控制阀和左驱动控制阀，其安装在第一液压泵的第一中心旁路上，并且各自经由并联流路连接; 悬臂控制阀，铲斗控制阀和右驱动阀，其安装在第二液压泵的第二中心旁路上，并且各自经由并联流路连接; 压力发生装置; 排气流路，其形成在动臂控制阀的动臂的下侧的控制阀芯上，用于保持第二中心旁通路径的打开状态而不关闭，当动臂控制阀被切换时， 降低繁荣 以及中心旁路切换阀，其安装在第二中心旁路路径的最下侧，并且通过用于切换悬臂控制阀的控制信号而切换。