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    • 1. 发明公开
    • 통풍기 날개각 조절 유압시스템
    • KR1020150084465A
    • 2015-07-22
    • KR1020140004507
    • 2014-01-14
    • 주식회사 에네스지
    • 양천규이승훈
    • F15B11/02F15B13/02
    • F15B11/024F15B13/022
    • 본발명은대용량보일러통풍기날개각조절유압시스템에있어서, 종래의제어작동기의기계적콘트롤러부를대체하여다중화된비례제어밸브를장착되는데, 피스톤샤프트의오일공급포트에대응하는 2개의오일포트와상기오일포트각각의양측에실링을구비하며, 그일단에는피스톤샤프트를감싸는오일실및 장착구를구비한제1베어링커버, 그타단에는 LVDT 변위측정센서를장착하기위한장착구를구비한제2베어링커버를구비하는유압제어유블럭, 상기유압제어유블럭의오일포트에연결되는유압포트연결관, 피드백로드를대체하여피스톤샤프트의중심공을따라삽입장착되는 LVDT 변위측정센서를적어도포함하며, 상기유압포트연결관에비례제어밸브를장착하여이루어지는것을특징으로한다. 본발명에의하면, 계통주파수및 부하변동시통풍기날개각조절을수행하는제어작동기의구조를단순화하여고장율을감소시키고비례제어밸브의다중화구성에따라신뢰성과편리성을증대하여결과적으로발전운영비용을감소시키고안정적인발전설비운영을할 수있다.
    • 本发明涉及一种用于控制大容量锅炉中的风扇的叶片角度的液压系统。 用于控制大容量锅炉中的风扇的叶片角度的液压系统具有多路比例控制阀,而不是控制致动器的现有机械控制部分。 用于控制大容量锅炉中的风扇叶片角度的液压系统包括:液压控制流体块,具有对应于活塞轴的供油口的两个油口,设置在油口两侧的密封件,第一轴承 在形成有用于围绕活塞轴的油封和安装单元的一端形成的盖,以及形成在另一端的第二轴承盖,同时具有用于安装LVDT位移传感器的安装单元; 连接到液压控制流体块的油口的液压端口连接管; LVDT位移传感器沿着活塞轴的中心孔而不是反馈杆插入; 并安装在液压端口连接管上的比例控制阀。 本发明通过简化当系统的频率和负载改变时调节风扇的叶片角度的控制致动器的结构,并根据比例控制阀的多路复合组合提高可靠性和方便性来降低故障率; 从而降低发电成本并稳定地操作发电设备。
    • 3. 发明公开
    • 전기 유압 하이브리드 액츄에이터
    • 电动液压驱动器
    • KR1020110124843A
    • 2011-11-18
    • KR1020100044258
    • 2010-05-12
    • 주식회사동신유압주식회사 동신이엔텍박성환
    • 김상민박성환
    • F15B11/02F15B21/14B29C47/00
    • F15B11/02B29C47/00F15B13/021F15B13/022F15B13/0401
    • PURPOSE: An electric-hydraulic hybrid actuator is provided to control the moving direction, speed, and output of a single rod of a hydraulic cylinder by controlling the rotating direction, speed, and torque of a motor. CONSTITUTION: An electric-hydraulic hybrid actuator comprises a double-acting hydraulic cylinder(110), a double-way pump(120), a motor(130), a first hydraulic line(140), a second hydraulic line(150), a tank(160), and a fluid supply and collecting unit(170). The double-acting hydraulic cylinder comprises a single rod, a first cylinder port, and a second cylinder port. The motor drives the double-way pump in forward or reverse direction. The first hydraulic line connects a first distribution port to the first cylinder port. The second hydraulic line connects a second distribution port to the second cylinder port. The fluid supply and collecting unit collects or supplements fluids according to the operation of the double-acting hydraulic cylinder.
    • 目的:通过控制电机的旋转方向,速度和转矩,提供电动液压混合动力执行机构来控制液压缸单杆的运动方向,速度和输出。 构成:电动液压混合动力执行器包括双作用液压缸(110),双向泵(120),电动机(130),第一液压管路(140),第二液压管路(150) 罐(160)和流体供应和收集单元(170)。 双作用液压缸包括单杆,第一气缸端口和第二气缸端口。 马达驱动双向泵正向或反向。 第一液压管线将第一分配口连接到第一气缸端口。 第二液压管线将第二分配口连接到第二气缸端口。 流体供应和收集单元根据双作用液压缸的操作收集或补充流体。
    • 4. 发明公开
    • Oil pressure line system for working vehicle
    • 用于工作车辆的油压线系统
    • KR20100089324A
    • 2010-08-12
    • KR20090008524
    • 2009-02-03
    • DAEHO CO LTD
    • KIM JOONG HO
    • F15B9/03F15B15/14
    • F15B13/06F15B13/022F15B21/08F15B2211/305
    • PURPOSE: A hydraulic line system for a working vehicle is provided to expand and contract a hydraulic cylinder by installing a valve for converting the direction of hydraulic pressure. CONSTITUTION: A hydraulic line system for a working vehicle comprises hydraulic cylinders(10,20), hydraulic connection jacks(30), a hydraulic line(40), and a hydraulic direction converting valve(50). The hydraulic cylinders have expandable bars(11,21). The hydraulic connection jacks supply working fluid to the hydraulic cylinder and are coupled to hydraulic supply jacks in a working vehicle. The hydraulic line is connected to the hydraulic connection jacks. The hydraulic direction converting valve is coupled to the end of the hydraulic line and converts the direction of the working fluid flowing through the hydraulic line.
    • 目的:提供一种用于工作车辆的液压管路系统,用于通过安装用于转换液压方向的阀来膨胀和收缩液压缸。 构成:用于工作车辆的液压线路系统包括液压缸(10,20),液压连接千斤顶(30),液压管路(40)和液压方向转换阀(50)。 液压缸具有可扩张杆(11,21)。 液压连接千斤顶向液压缸供应工作流体,并连接到工作车辆中的液压供应千斤顶。 液压管路连接到液压连接千斤顶。 液压方向转换阀联接到液压管路的端部,并且转换流过液压管线的工作流体的方向。
    • 8. 发明公开
    • 전자유압식 라이드 컨트롤 시스템 및 방법
    • 电动车控制系统及方法
    • KR1020130055302A
    • 2013-05-28
    • KR1020110120982
    • 2011-11-18
    • 현대중공업 주식회사
    • 김관수진기창최계현
    • F15B13/02E02F9/22F15B21/02F15B11/032B60T13/24E02F3/36
    • F15B13/022B60T13/249E02F3/369E02F9/2271F15B11/0325F15B21/02
    • PURPOSE: An electro-hydraulic ride control system and a control method thereof are provided to achieve a ride control function without an accumulator and a ride control valve block. CONSTITUTION: An electro-hydraulic ride control system comprises an electro-hydraulic valve(310), an angle sensor(320), a pressure sensor(330), and a controller(340). The electro-hydraulic valve transfers pressure oil transferred from a pump(130) to a hydraulic cylinder. The angle sensor is installed in one end of a boom(110) to measure the angle variation of the boom. The pressure sensor is installed in the pressure oil supply and discharge passages(151,152) of the hydraulic cylinder to measure pressure variation between both ends of the hydraulic cylinder. The controller sets the average of angle signals measured by the angle sensor as a reference position value of the boom when a wheel loader is driving in a state where an operation lever(180) of a bucket and the boom is in neutral. [Reference numerals] (110) Boom; (120) Bucket; (140) Driving speed sensor; (180) Operation lever; (310) Electro-hydraulic valve; (340) Controller
    • 目的:提供电动液压行驶控制系统及其控制方法,以实现没有蓄能器和行驶控制阀块的行驶控制功能。 构成:电动液压行驶控制系统包括电动液压阀(310),角度传感器(320),压力传感器(330)和控制器(340)。 电动液压阀将从泵(130)传递的压力油传送到液压缸。 角度传感器安装在悬臂(110)的一端以测量起重臂的角度变化。 压力传感器安装在液压缸的压力供油和排出通道(151,152)中,以测量液压缸两端之间的压力变化。 控制器将由角度传感器测量的角度信号的平均值设定为在铲斗的操作杆(180)和吊臂处于空档状态的状态下轮式装载机行驶时的起重臂的基准位置值。 (附图标记)(110)臂; (120)桶 (140)行驶速度传感器; (180)操作杆; (310)电动液压阀; (340)控制器
    • 10. 发明公开
    • 산업용 차량의 유압 시스템
    • 工业车辆液压系统
    • KR1020090068831A
    • 2009-06-29
    • KR1020070136610
    • 2007-12-24
    • 주식회사 두산
    • 고현기
    • B66F9/22B66F9/06
    • B66F9/22F15B13/022G05D16/2006
    • A hydraulic system of an industrial vehicle is provided to reduce pressure loss and temperature rise of the hydraulic oil, thereby lengthening the service life. A hydraulic system of an industrial vehicle, which supplies the hydraulic oil discharged from a pump(10) to a main control valve(20), a brake master-cylinder(30) and a steering unit(40) connected to a working machine, includes a direction control valve(50) and a pressure compensation flow control valve(60). The inlet port of the direction control valve is connected to the pump and one of the inlet and outlet ports is connected to the main control valve. The inlet port of the pressure compensation flow control valve is connected to the other of the inlet and outlet ports of the direction control valve, while the outlet port is connected to the brake master-cylinder through a brake supply line(62). The pressure compensation flow control valve supplies hydraulic oil passing through the direction control valve to the brake master-cylinder at the set flow rate. The drain port of the pressure compensation flow control valve is connected to the steering unit through a steering supply line(63), in order to supply the residual hydraulic oil, not supplied to the brake master-cylinder, to the steering unit. The direction control valve is witched to supply the hydraulic oil to the pressure compensation flow control valve when the differential pressure between the pressure of the hydraulic oil supplied to the brake master-cylinder and the load sensing pressure of the steering unit from the direction control valve is smaller than the reference differential pressure, and to supply the hydraulic oil to the main control valve when the differential pressure is greater than the reference differential pressure.
    • 提供工业车辆的液压系统以减少液压油的压力损失和温度上升,从而延长使用寿命。 一种工业车辆的液压系统,其将从泵(10)排出的液压油供给到主控制阀(20),制动主缸(30)和与工作机连接的转向单元(40) 包括方向控制阀(50)和压力补偿流量控制阀(60)。 方向控制阀的入口连接到泵,其中一个入口和出口连接到主控制阀。 压力补偿流量控制阀的入口连接到方向控制阀的入口和出口的另一个,而出口通过制动器供油管线(62)连接到制动主缸。 压力补偿流量控制阀以设定的流量将通过方向控制阀的液压油供应​​到制动主缸。 压力补偿流量控制阀的排出口通过转向供油管线63连接到转向单元,以将未供给制动主缸的剩余液压油供给到转向单元。 当供给到制动主缸的液压油的压力与来自方向控制阀的转向单元的负载感测压力之间的压力差时,方向控制阀被驱动以将液压油供应​​到压力补偿流量控制阀 小于参考压差,并且当差压大于参考压差时,将液压油供应​​到主控制阀。