유압 제어 회로
    5.
    发明公开
    유압 제어 회로 审中-实审
    液压控制回路

    公开(公告)号:KR1020170103916A

    公开(公告)日:2017-09-13

    申请号:KR1020177022260

    申请日:2016-02-03

    IPC分类号: F16H61/14 F16H61/02

    摘要: 오일펌프(OP)의토출압을압력조절하는압력조정밸브(10)와, 압력조정밸브(10)의파일럿압(P3)을토크컨버터압(P4)으로압력조절하는압력조절밸브(20)와, 압력조정밸브(10)의출력포트(15)와유로(59)를접속하는유로(53)를갖고, 압력조절밸브(20)는유로(53)에유로(54)를통하여접속된입력포트(24)와, 유로(53)에유로(55)를통하여접속된구동압포트(22)와, 구동압포트(22)에입력되는구동압(P5)에따라서축 방향으로변위되는스풀(26)과, 출력포트(25)를가짐과함께, 스풀(26)의축방향의이동에의해, 토크컨버터압(P4)을압력조절하도록구성된유압제어회로(1)에있어서, 유로(53)와유로(55)의접속부(531)와, 유로(53)와유로(54)의접속부(541) 사이에교축부(30)를설치하여, 토크컨버터압(P4)을적정압으로압력조절한다.

    摘要翻译: 用于调节油泵OP的排出压力的压力调节阀10和用于通过转矩转换器压力P4调节压力调节阀10的先导压力P3的压力调节阀20, 以及连接压力调节阀10的输出口15和油路59的油路53.压力调节阀20经由油路54连接到油路53, 如图24所示,滑阀在轴向上根据驾驶压力口22,驱动压力(P5)被输入到通过通道55连接到油路53中的驱动压力口22(26位移 而且,输出端口25构成为通过滑阀26的轴线方向的移动来调整液力变矩器压力P4的压力。在液压控制回路1中, 节流部分30设置在油通道55的连接部分531与油通道53的连接部分541和油通道54之间,以将变矩器压力P4的压力调节到适当的压力。

    건설기계 작동유의 오염물질 제거장치
    7.
    发明公开
    건설기계 작동유의 오염물질 제거장치 无效
    液压过滤器污染指示器

    公开(公告)号:KR1020080081528A

    公开(公告)日:2008-09-10

    申请号:KR1020070021640

    申请日:2007-03-05

    IPC分类号: F15B21/04

    摘要: An apparatus for removing contaminants of working fluid of a construction machine is provided to filter the contaminants by a second filter element even through the contaminants are bypassed without being filtered by a first filter element. An apparatus(1) for removing contaminants of working fluid of a construction machine comprises as the follows. A hydraulic tank is connected to both ends of a working fluid circulation line(10) to circulate working fluid along the working fluid circulation line. A first filter element(20) is installed on the working fluid circulation line to filter contaminants included in the working fluid. Both ends of a first bypass line(30) are connected to the working fluid circulation line located at an inlet and an outlet of the first filter element. A filter protection bypass valve(40) is installed on the first bypass line and opened when a pressure difference between the inlet and the outlet of the first filter element reaches a predetermined value. Both ends of a pressure switch(50) are connected to the working fluid circulation line located at the inlet and the outlet of the first filter element to sense the pressure difference between the inlet and the outlet of the first filter element. An indicator(60) is connected to the pressure switch and informs a user of a replacement time of the first filter element before the pressure difference between the inlet and the outlet of the first filter element reaches the predetermined value.

    摘要翻译: 提供了一种用于去除建筑机械的工作流体污染物的装置,以便通过第二过滤元件过滤污染物,即使通过污染物被旁路而不被第一过滤元件过滤。 一种用于去除建筑机械工作流体污染物的装置(1)包括如下。 液压箱连接到工作流体循环管线(10)的两端,以沿着工作流体循环管路循环工作流体。 第一过滤元件(20)安装在工作流体循环管线上以过滤包含在工作流体中的污染物。 第一旁通管线(30)的两端连接到位于第一过滤元件的入口和出口处的工作流体循环管线。 当第一过滤元件的入口和出口之间的压力差达到预定值时,过滤器保护旁通阀(40)安装在第一旁路管线上并打开。 压力开关(50)的两端连接到位于第一过滤元件的入口和出口处的工作流体循环管线,以感测第一过滤元件的入口和出口之间的压力差。 指示器(60)连接到压力开关,并且在第一过滤元件的入口和出口之间的压力差达到预定值之前通知用户第一过滤元件的更换时间。