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    • 4. 发明公开
    • 유압 제어 장치
    • 液压控制装置
    • KR1020080055873A
    • 2008-06-19
    • KR1020087007847
    • 2007-03-26
    • 가부시키가이샤 도요다 지도숏키
    • 마츠자키다케하루나카지마시게토고바야시다케시
    • F15B11/04B66F9/22F15B11/044F15B11/05
    • F15B11/0413B66F9/22E02F9/2203E02F9/2225E02F9/2267F15B11/044F15B11/05F15B13/0402F15B2211/30545F15B2211/353F15B2211/40561F15B2211/47F15B2211/473F15B2211/7052Y10T137/87169
    • A hydraulic control apparatus (1) includes a switch valve (11) , a valve support chamber (35) , a flow control valve (12) movable therein, an on-off valve (13) movable within a communication path chamber (12a) located inside the flow control valve (12)', and a valve control device 14. The on-off valve (13) can open and shut off a communication path X between a cylinder line (32) and a switch valve line (33). A restrictor formed between the flow control valve (12) and a wall defining the valve support chamber (35) connects the cylinder line (32) and the communication path chamber (12a). The restrictor opening is changed in correspondence with movement of the flow control valve (12). When the switch valve (11) is located at the drainage position, the valve control device (14) applies a pilot pressure lower than the pressure in the cylinder line (32) to a back pressure chamber (12d) of the flow control valve (12) , thereby moving the on-off valve (13) in a direction for opening the communication path X.
    • 液压控制装置(1)包括开关阀(11),阀支撑室(35),可在其中移动的流量控制阀(12),可在连通路径室(12a)内移动的开关阀(13) 位于流量控制阀(12)'内的开关阀(13)和阀控制装置14.开关阀(13)可以打开和关闭气缸管线(32)和开关阀线(33)之间的连通路径X, 。 形成在流量控制阀(12)和限定阀支撑室(35)的壁之间的限流器连接气缸管线(32)和连通路径室(12a)。 限流器开度根据流量控制阀(12)的运动而改变。 当切换阀(11)位于排水位置时,阀控制装置(14)将低于气缸管线(32)中的压力的​​先导压力施加到流量控制阀的背压室(12d) 12),从而沿着打开连通路径X的方向移动开关阀(13)。
    • 8. 发明公开
    • 유압 제어 장치 및 유압 회로
    • 液压控制装置和液压回路
    • KR1020070094895A
    • 2007-09-27
    • KR1020077012851
    • 2005-11-08
    • 가부시키가이샤 도요다 지도숏키
    • 마츠자키다케하루나카지마시게토
    • F15B13/04
    • F15B13/0402F15B13/0417
    • A supply passage 32, a discharge passage 33, an actuator passage 34, and a spool bore 36 are defined in a housing 31. The spool bore 36 accommodates a spool 35 and communicates with the supply passage 32, the discharge passage 33, and the actuator passage 34. Load pressure detection circuit sections 21a, 21b of load pressure detection circuit 21 are provided in correspondence with switch positions. Each of the load pressure detection circuit sections 21a, 21b detects load pressure when the actuator passage 34 is connected to the supply passage 32. Each load pressure detection circuit section 21a, 21b is defined by a through hole provided in the housing 31 and connected to the spool bore 36. Check valves 22 are each arranged in a corresponding one of the load pressure detection circuit sections 21a, 21b. This simplifies the configuration of each load pressure detection circuit 21 and saves the space for arranging the load pressure detection circuit 21. As a result, the housing 31 in which the load pressure detection circuit 21 is defined becomes relatively compact.
    • 供给通道32,排放通道33,致动器通道34和卷轴孔36限定在壳体31中。卷轴孔36容纳卷轴35并与供给通道32,排出通道33和 执行器通路34.负载压力检测电路21的负载压力检测电路部分21a,21b与开关位置对应地设置。 每个负载压力检测电路部分21a,21b检测到致动器通道34连接到供应通道32上的负载压力。每个负载压力检测电路部分21a,21b由设置在壳体31中的通孔限定,并连接到 止回阀孔36分别布置在相应的一个负载压力检测电路部分21a,21b中。 这简化了每个负载压力检测电路21的配置,并且节省了用于布置负载压力检测电路21的空间。结果,其中限定了负载压力检测电路21的壳体31变得相对紧凑。