专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

EP2546421B1 DOUBLE CHECK VALVE FOR CONSTRUCTION EQUIPMENT 有权
标题翻译：双止回阀，建设
公开(公告)号：EP2546421B1
公开(公告)日：2014-12-24
申请号：EP10851806.9
申请日：2010-05-18
申请人： Volvo Construction Equipment AB
发明人： PARK, Sung-Bok , JEE, Se-Rib
IPC分类号： E02F9/22 , E02F3/85 , E02F3/84 , F15B13/01
CPC分类号： E02F9/2207 , E02F9/2267 , F15B13/015 , F15B2211/3051 , F15B2211/761

2. 发明公开

EP2546421A1 DOUBLE CHECK VALVE FOR CONSTRUCTION EQUIPMENT 有权
标题翻译：用于施工设备的双重止回阀
公开(公告)号：EP2546421A1
公开(公告)日：2013-01-16
申请号：EP10851806.9
申请日：2010-05-18
申请人： Volvo Construction Equipment AB
发明人： PARK, Sung-Bok , JEE, Se-Rib
IPC分类号： E02F9/22 , F15C3/02 , E02F3/85 , E02F3/84 , F15C3/00
CPC分类号： E02F9/2207 , E02F9/2267 , F15B13/015 , F15B2211/3051 , F15B2211/761
摘要： An improved double check valve for a construction machine is provided, which can greatly reduce noise and hunting phenomenon by making check valves open and close within a predetermined time difference to correspond to pressure drops that occur due to an external load when a dozer blade working device is operated. The double check valve includes a hydraulic pump; a hydraulic cylinder connected to the hydraulic pump to drive a working device; a control valve installed in a flow path between the hydraulic pump and the hydraulic cylinder and shifted to control a start, a stop, and a direction change of the hydraulic cylinder; a pair of pistons installed on one side of a piston cylinder to open and close first flow paths and second flow paths provided between the control valve and the hydraulic cylinder, provided with plunger ground portions and notch portions, respectively, and dividedly formed to be shifted in opposite directions to each other when signal pressure that is introduced from any one of the first and second flow paths acts on check hydraulic pressure portions during temporary descending of the working device; a pair of check valves of which checking functions are released when the check valves are pressed through the shifting of the pistons; and a plunger installed inside the piston cylinder to move the pistons in a checking function release direction of the check valves while a flow rate of hydraulic fluid, having passed through the notch portions, forms pressure in the plunger ground portions of the pistons.
摘要翻译：提供了一种用于建筑机械的改进的双止回阀，其能够通过在预定的时间差内使止回阀打开和关闭而大大降低噪音和振荡现象，以对应于当推土铲工作装置时由于外部负载而发生的压降被操作。双止回阀包括液压泵; 连接到所述液压泵以驱动工作装置的液压缸; 控制阀，所述控制阀安装在所述液压泵与所述液压缸之间的流动路径中并且被移位以控制所述液压缸的启动，停止和方向改变; 一对活塞，安装在活塞缸的一侧上以打开和关闭设置在控制阀和液压缸之间的第一流动路径和第二流动路径，所述第一流动路径和第二流动路径分别设置有柱塞接地部分和凹口部分，并且被分开地形成以被移位当在第一和第二流动路径中的任一个引入的信号压力在作业装置临时下降期间作用在止回液压部分上时，在彼此相反的方向上; 一对单向阀，当通过活塞的移动按压止回阀时，其检测功能被释放; 以及柱塞，其安装在活塞缸内，以在已经通过切口部分的液压流体的流量在活塞的柱塞接地部分中形成压力的同时沿单向阀的检查功能释放方向移动活塞。

3. 发明授权

EP2799692B1 ENGINE CONTROL METHOD OF CONSTRUCTION MACHINE 有权
公开(公告)号：EP2799692B1
公开(公告)日：2018-09-26
申请号：EP11878350.5
申请日：2011-12-28
申请人： Volvo Construction Equipment AB
发明人： YUN, Seong-Geun , PARK, Sung-Bok , JEE, Se-Rib
IPC分类号： E02F9/20 , F02D17/04 , F02D29/00 , F02D41/04 , F02D11/02 , F04B49/02
CPC分类号： F15B11/00 , E02F9/2066 , E02F9/2246 , E02F9/2285 , E02F9/267 , F02D29/04 , F02D41/042 , F02D41/221 , F02D2200/50 , F15B19/005 , F15B2211/60 , Y02T10/40
摘要： An engine control system for a construction machine is disclosed, which can compulsorily stop engine driving when an attachment or the like malfunctions against an operator's intention during the operation of an excavator or the like. The engine control system includes a first step of determining whether pilot signal pressure, which is detected when at least one of an operation lever and a traveling pedal for respectively operating an attachment, a swing device, and a traveling device is operated, exceeds a first set pressure, and a second step of determining whether the pressure on the outlet side of a main hydraulic pump exceeds a second set pressure, wherein if the pilot signal pressure detected in the first step does not exceed the first pressure and the pressure of the main hydraulic pump detected in the second step exceeds the second pressure, engine driving is compulsorily stopped by means of a control signal from the controller.

4. 发明公开

EP3009690A1 FLOW RATE CONTROL VALVE FOR CONSTRUCTION MACHINE 审中-公开
标题翻译：工程机械用流量控制阀
公开(公告)号：EP3009690A1
公开(公告)日：2016-04-20
申请号：EP13886794.0
申请日：2013-06-14
申请人： Volvo Construction Equipment AB
发明人： PARK, Sung-Bok , CHOI, Jin-Youn
IPC分类号： F15B13/02
CPC分类号： E02F9/2225 , E02F3/435 , E02F9/2267 , E02F9/2285 , F15B13/0402 , F15B13/042 , F15B2211/30525 , F16K11/0716 , F16K31/363
摘要： Disclosed is a flow rate control valve for a construction machine. A flow rate control valve for a construction machine comprises: a valve body having a pump channel for receiving operating oil from a hydraulic pump, a supply channel connected to the pump channel, and an actuator port connected to a hydraulic actuator; a spool installed inside the valve body to be switchable such that, when switched in response to application of signal pressure, the spool selectively causes the supply channel and the actuator port to communicate with each other; a tank channel installed inside the valve body and connected to an operating oil tank; and an orifice formed in the spool to have an inlet formed on an end and an outlet communicating with the tank channel, wherein, when the spool is initially actuated, a part of the signal pressure is discharged to the operating oil tank via the orifice.
摘要翻译：公开了一种用于建筑机械的流量控制阀。一种用于工程机械的流量控制阀，包括：阀体，具有用于接收来自液压泵的工作油的泵通道，连接到泵通道的供应通道以及连接到液压致动器的致动器端口; 安装在所述阀体内部以可切换的阀芯，使得当响应于施加信号压力而切换时，所述阀芯选择性地使所述供应通道和所述致动器端口彼此连通; 安装在阀体内并连接到工作油箱的油箱通道; 以及形成在所述阀芯中的孔口，所述孔口具有形成在端部上的入口和与所述容器通道连通的出口，其中当所述阀芯初始致动时，所述信号压力的一部分经由所述孔口排放到所述工作油箱。

5. 发明公开

EP2799692A1 ENGINE CONTROL METHOD OF CONSTRUCTION MACHINE 有权
标题翻译： MOTORSTEUERUNGSVERFAHREN EINER BAUMASCHINE
公开(公告)号：EP2799692A1
公开(公告)日：2014-11-05
申请号：EP11878350.5
申请日：2011-12-28
申请人： Volvo Construction Equipment AB
发明人： YUN, Seong-Geun , PARK, Sung-Bok , JEE, Se-Rib
IPC分类号： F02D17/04 , F02D29/00 , F02D41/04 , F02D11/02
CPC分类号： F15B11/00 , E02F9/2066 , E02F9/2246 , E02F9/2285 , E02F9/267 , F02D29/04 , F02D41/042 , F02D41/221 , F02D2200/50 , F15B19/005 , F15B2211/60 , Y02T10/40
摘要： An engine control system for a construction machine is disclosed, which can compulsorily stop engine driving when an attachment or the like malfunctions against an operator's intention during the operation of an excavator or the like. The engine control system includes a first step of determining whether pilot signal pressure, which is detected when at least one of an operation lever and a traveling pedal for respectively operating an attachment, a swing device, and a traveling device is operated, exceeds a first set pressure, and a second step of determining whether the pressure on the outlet side of a main hydraulic pump exceeds a second set pressure, wherein if the pilot signal pressure detected in the first step does not exceed the first pressure and the pressure of the main hydraulic pump detected in the second step exceeds the second pressure, engine driving is compulsorily stopped by means of a control signal from the controller.
摘要翻译：公开了一种用于建筑机械的发动机控制系统，当在挖掘机等的操作期间，当附件等在操作者的意图上发生故障时，可以强制停止发动机驱动。发动机控制系统包括：第一步骤，确定当操作操作杆，摆动装置和行驶装置的操作杆和行进踏板中的至少一个操作时检测到的先导信号压力是否超过第一设定压力，第二步骤，确定主液压泵的出口侧的压力是否超过第二设定压力，其中，如果在第一步骤中检测到的先导信号压力不超过主要压力的第一压力和压力在第二步骤中检测到的液压泵超过第二压力，通过来自控制器的控制信号强制停止发动机驱动。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式