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    • 3. 发明专利
    • Cushion valve
    • 垫圈阀
    • JP2014181802A
    • 2014-09-29
    • JP2013058256
    • 2013-03-21
    • Kawasaki Heavy Ind Ltd川崎重工業株式会社
    • MATSUO MASAHIROKAWAKAMI RYO
    • F16K47/04F16K3/26F16K11/10
    • F15B13/0422F15B13/0402F15B13/0407F15B2211/6355F15B2211/67F15B2211/8606F16K11/10F16K47/023F16K47/04Y10T137/87193
    • PROBLEM TO BE SOLVED: To provide a cushion valve which can be integrated in two pilot lines and directly connected to a tank.SOLUTION: A cushion valve 1 comprises a housing 2 including a pair of primary chambers 25A and 25B and a pair of secondary chambers 26A and 26B. Within the housing 2, a first spool 3 and a pair of second spools 4A and 4B are arranged, and energization components 6 are arranged between them. The first spool 3 includes a first internal passage 35 formed to communicate with a tank port 23. Each of the second spools includes a land part 43 for opening/closing an opening (27A or 27B) formed between the primary chamber and the secondary chamber, and each of the second spools includes a second internal passage 45 formed to include a contraction 46. When one second spool moves towards the first spool 3, the first internal passage 35 is communicated with the secondary chamber on the side of the other second spool.
    • 要解决的问题:提供一种缓冲阀,其可以集成在两条先导管路中并且直接连接到罐。解决方案:缓冲阀1包括壳体2,壳体2包括一对初级室25A和25B以及一对次级室 26A和26B。 在壳体2内设置有第一卷轴3和一对第二卷轴4A,4B,并且在它们之间配置有通电部件6。 第一卷轴3包括形成为与罐口23连通的第一内部通道35.每个第二卷轴包括用于打开/关闭形成在主室和副室之间的开口(27A或27B)的陆部43, 并且每个第二卷轴包括形成为包括收缩部46的第二内部通道45.当一个第二卷轴朝向第一卷轴3移动时,第一内部通道35在第二卷轴的一侧与副室连通。
    • 7. 发明专利
    • Rotary pilot valve
    • 旋转导阀
    • JP2004293757A
    • 2004-10-21
    • JP2003090577
    • 2003-03-28
    • Komatsu Ltd株式会社小松製作所
    • KOZUKA DAISUKEHORI HIDEJI
    • F16K31/44F15B13/04F15B13/042F15B13/06F16K11/076F16K11/078G05G1/08G05G5/06
    • F15B13/0406F15B13/0422F15B13/06G05G1/08G05G5/065Y10T137/86638Y10T137/86654
    • PROBLEM TO BE SOLVED: To provide a rotary pilot valve in which an operating force of the rotary pilot is reduced, and can be operated especially with very light operating force such as a finger tip type and the number of the parts forming the pilot valve is reduced. SOLUTION: A tank port T, a pair of pumps Pa and Pb, a first output port P1, and a second output port P2 are formed in a body 6a. In a cylinder valve 5a, a pair of notch grooves 22a and 22b are formed to be communicated through a balance hole 24. Variable diaphragms 23a and 23b are formed at a tank port T side and a pump port Pa side of the notch groove 22a. An opening area of each variable diaphragm is gradually increased for one opening area and gradually reduced for the other opening area by tilting an operation lever 1. Pressure oil introduced into the notch groove 22a via the variable diaphragm 23a is output from the output port Pa as intermediate throttling pressure. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种旋转导阀的旋转导阀,其中旋转导向器的操作力减小,并且能够以非常轻的操作力(例如指尖型)和形成 先导阀减少。 解决方案:在主体6a中形成有罐口T,一对泵Pa和Pb,第一输出端口P1和第二输出端口P2。 在气缸阀5a中,一对切口槽22a和22b形成为通过平衡孔24连通。可变隔膜23a和23b形成在槽口T侧和切口槽22a的泵口Pa侧。 通过使操作杆1倾斜,每个可变隔膜的开口面积逐渐增加,并且通过使操作杆1倾斜而逐渐减小另一个开口区域。经由可变隔膜23a引入到切口槽22a中的压力油从输出端口Pa输出为 中间节流压力。 版权所有(C)2005,JPO&NCIPI
    • 9. 发明专利
    • Warmup device for pilot operating circuit
    • 导管操作电路的保护装置
    • JPS6124886A
    • 1986-02-03
    • JP14524284
    • 1984-07-14
    • Hitachi Constr Mach Co Ltd
    • HIRATA TOICHISUGIYAMA GENROKU
    • F16K31/42F15B11/08F15B13/042F15B21/04F16K11/07
    • F15B13/0422
    • PURPOSE:To eliminate delay in response during cold period by furnishing a check valve on a communication line which is to put the pilot oil chamber in communication to passage leading to a return circuit formed in a direction control valve. CONSTITUTION:A communication line 20 formed on the right end of a spool 8 is connected to a passage 11 leading to a return circuit 5 and is capable of being connected to a pilot oil chamber 9 on the left end. A check valve to hinder oil flow into said passage 11 from the pilot oil chamber 9 is installed on this communication line 20. When an oil pressure pump 3 is driven with control level 13 in the neutral position, the pressure oil flows through both pilot lines 14, 14' to raise the oil temp. therein, which ensures that the pressure oil flowing in this pilot circuit can easily have a low viscosity even during colder periods.
    • 目的:为了消除寒冷期间的延迟响应,在通信线路上提供一个止回阀,该通信线路将导向油室连通通向一个形成在方向控制阀上的回路。 构成:形成在阀芯8的右端的通信线20连接到通向回流回路5的通道11,并且能够连接到左端的先导油室9。 阻止从先导油室9流入到通道11中的油的止回阀被安装在该连通管线20上。当油压泵3以中间位置的控制级别13驱动时,压力油流过两条先导管线 14,14'提高油温。 其中,这确保了即使在较冷的时间期间,在该先导回路中流动的压力油可以容易地具有低粘度。
    • 10. 发明专利
    • Control device for working machine
    • 工作机械控制装置
    • JPS5947507A
    • 1984-03-17
    • JP15452482
    • 1982-09-07
    • Hitachi Constr Mach Co Ltd
    • KASHIWAGI KUNIOIZUMI EIKI
    • E02F9/22F15B11/08F15B13/042
    • F15B13/0422
    • PURPOSE:To control a working machine including a hydraulic actuator without malfunctions by detecting pilot pressure from an operation part of a direction changing valve and correcting a control signal of a control portion corresponding to the detected pressure. CONSTITUTION:A control unit is adapted to conduct discharged pressurized oil from a hydraulic pump 1 through a direction changing valve 3 to a hydraulic actuator 2 in a hydraulic shovel or the like, and the direction changing valve 3 is controlled by pilot pressure through a pilot valve 5 including an operation lever 4. According to a control signal of a control arithmetic unit 10, the higher pilot pressure, either the pilot pressure discharged through an electric-hydraulic converting valve 7 or the above pilot pressure, is applied to a port 3b of the above valve 3 through a shuttle valve 8. At this time, the control arithmetic unit 10 is adapted to suitably correct a control signal based upon an output of a pressure detector 9 for detecting the pilot pressure applied to the port 3a of the direction changing valve 3.
    • 目的:通过从方向切换阀的操作部分检测先导压力并对与检测到的压力相对应的控制部分的控制信号进行校正,来控制包括液压执行机构的工作机械,而不会发生故障。 构成:控制单元适于将来自液压泵1的排出的加压油通过方向切换阀3以液压挖掘机等方式输送到液压致动器2,并且方向切换阀3通过先导压力通过飞行员 阀5包括操作杆4.根据控制运算单元10的控制信号,通过电动液压转换阀7排出的先导压力或上述先导压力的较高先导压力被施加到端口3b 。此时,控制运算单元10适于根据用于检测施加到方向的端口3a的先导压力的压力检测器9的输出来适当地校正控制信号 换阀3。