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    • 22. 发明专利
    • ロードセンシング制御回路
    • 负载感应控制电路
    • JP2015224657A
    • 2015-12-14
    • JP2014108124
    • 2014-05-26
    • KYB株式会社
    • 寺尾 剛中村 雅之
    • F15B11/00F15B11/05
    • F15B11/163F15B11/162F15B13/026F15B13/06F15B21/005F15B2211/20546F15B2211/253F15B2211/3054F15B2211/351F15B2211/40515F15B2211/40553F15B2211/50572F15B2211/5756F15B2211/71F15B2211/781
    • 【課題】 切換弁の切り換え量で決まる分流比を、目的に応じて変更できるようにする。 【解決手段】 コンペンセータバルブC1,C2の一方の圧力室9,10には、当該コンペンセータバブルC1,C2が接続されたアクチュエータA1,A2の負荷圧を導き、選択手段4で選択された最高負荷圧をコンペンセータバルブC1,C2の他方の圧力室11,12に導き、これら両圧力室9,10及び11,12の圧力作用で当該コンペンセータバルブC1,C2の開度を制御して、複数の切換弁V1,V2の切り換え量に応じてポンプ吐出量を分流する。そして、上記コンペンセータバルブC1,C2の一方の圧力室9,10をタンクTに接続するドレン通路13を設けるとともに、このドレン通路13に、一方の圧力室9,10の圧力を制御する分流比変更バルブCVを設けている。 【選択図】 図1
    • 要解决的问题:根据目的改变基于切换阀的切换量确定的分流比。解决方案:连接补偿阀C1,C2的致动器A1,A2的负载压力被引导 通过选择装置4选择的最大负载压力将补偿阀C1,C2中的一个的压力室9,10引导到另一个补偿阀C1,C2的压力室11,12和 补偿阀C1,C2由两个压力室9,10和11,12的压力控制,因此根据多个开关阀V1,V2的切换量来分配泵排出量。 排水通道13设置成将补偿阀C1,C2中的一个的压力室9,10连接到箱T,以及用于控制一侧的压力室9,10的压力的分流比变更阀CV 设置在排水通道13中。
    • 24. 发明专利
    • Hydraulic control device and working machine provided with the same
    • 液压控制装置及其相应的工作机械
    • JP2013087831A
    • 2013-05-13
    • JP2011227749
    • 2011-10-17
    • Kobe Steel Ltd株式会社神戸製鋼所Kobelco Contstruction Machinery Ltdコベルコ建機株式会社
    • NANJO TAKAOSENOO SABUROGOTO NAOKI
    • F15B21/14E02F9/22
    • E02F9/2217E02F9/2091E02F9/226E02F9/2285E02F9/2289E02F9/2292E02F9/2296F15B13/06F15B21/14F15B2211/20546F15B2211/253F15B2211/7053F15B2211/7058F15B2211/88
    • PROBLEM TO BE SOLVED: To provide a hydraulic control device capable of suppressing cavitation of a regenerative motor for regenerating energy which a hydraulic actuator has while reducing power loss, and to provide a working machine provided with the device.SOLUTION: The hydraulic control device includes: a recovery oil passage R7 for recovering a hydraulic fluid delivered from hydraulic actuators 11, 12 and hydraulic pumps 16, 17 into a tank T; a regenerative motor 18 which rotates the output shaft 7a of an engine 7 according to the supply of the hydraulic fluid and are rotated and driven by the rotation of the output shaft 7a of the engine 7; a regenerative oil passage R8 for guiding a return oil from a boom cylinder 12 to the regenerative motor 18 without passing though the recovery oil passage R7; a connecting oil passage R9, which connects the recovery oil passage R7 with the regenerative oil passage R8; and a regeneration side check valve 21 which is provided in the connecting oil passage R9 to allow the flow of the hydraulic oil from the recovery oil passage R7 toward the regenerative motor 18 and to restrict the flow of the hydraulic oil from the regenerative motor 18 toward the recovery oil passage R7.
    • 要解决的问题:提供一种液压控制装置,其能够抑制再生电动机的气蚀,以使液压致动器具有的能量再生,同时减少动力损失,并提供设置有该装置的作业机械。 解决方案:液压控制装置包括:回收油通道R7,用于将从液压致动器11,12和液压泵16,17输送的液压流体回收到罐T中; 再生马达18,其根据液压流体的供给使发动机7的输出轴7a旋转,并通过发动机7的输出轴7a的旋转而旋转驱动; 用于将返回油从动臂缸12引导到再生电动机18的再生油路R8,而不经过回收油路R7; 连接油路R9,其将回收油路R7与再生油路R8连接; 以及再生侧止回阀21,其设置在连接油路R9中,以允许来自回收油路R7的液压油朝向再生马达18流动,并且将来自再生马达18的液压油的流量限制为 回油口R7。 版权所有(C)2013,JPO&INPIT
    • 25. 发明专利
    • Direction control valve
    • 方向控制阀
    • JPS6113003A
    • 1986-01-21
    • JP13434284
    • 1984-06-29
    • Kayaba Ind Co Ltd
    • KOIWAI SHIYUUJI
    • F16K11/22F15B11/16F15B13/06
    • F15B13/06
    • PURPOSE:To make plural actuators drivable simultaneously, by installing an orifice in a flow passage process between a parallel passage and an interconnecting passage. CONSTITUTION:In a direction control valve a2 at the downstream side, an orifice 25 is installed in position between a parallel passage 17 and a seat part 22 of a frist check valve 19. With this installation, when pressure oil is fed to an actuator by way of the parallel passage 17 of the direction control valve a2, it passes through the orifice 25 without fail, and thereby pressure is produced at the upstream side of the orifice 25, so that even if the actuator connected to the direction control valve a2 is light load, another actuator connected to a directional control valve a1 at the upstream side is operatable at the same time.
    • 目的:使多个致动器同时驱动,通过在平行通道和互连通道之间的流动通道中安装孔口。 构成:在下游侧的方向控制阀a2上,在第一止回阀19的平行通路17和座部22之间安装有孔口25,通过这种方式,当将压力油通过 方向控制阀a2的平行通道17的方式,其通过孔25而不通过,从而在孔25的上游侧产生压力,使得即使连接到方向控制阀a2的致动器是 连接到上游侧的方向控制阀a1的另一致动器同时可操作轻负载。
    • 26. 发明专利
    • Control valve device
    • 控制阀装置
    • JPS5943204A
    • 1984-03-10
    • JP12258583
    • 1983-07-06
    • Toshiba Mach Co Ltd
    • HASHIMOTO YUTAKAMATSUNAGA CHIHARUTSUKIMOTO TOSHIAKI
    • F15B11/00F15B11/16F15B13/06
    • F15B13/06
    • PURPOSE:To supply a flow of oil suited for the displacement in no relation to each loaded pressure and obtain stable operation and combined control, by feeding the oil to a spool in the lower position through a flow control spool in the uppermost stream in a hydraulic controller. CONSTITUTION:If a spool 4 is moved to the right, pressurized oil is allowed to flow in an actuator 3, and if the pressure of the oil increases larger than the tension of a spring 21, a spool 13 is moved to the left causing the outflow of the oil to a passage 9, and the pressure before a pressure device 10 is increased to reduce the delivery amount of a pump 11. An optional amount of flow can be selected by openings of notches 18a, 18b. If the spools 4, 7 are moved to the right, the delivery amount of the pump 11 from the passage 9, is increased by the pressure device 10 and the oil is fed from the spool 7 to an actuator 8. If the pressure of the spool 7 increases higher than the pressure of the spool 4, the spool 13 is pressed further to the left to decrease the opening of a passage 14, and an inflow of the oil to the spool 4 is controlled. The actuators 8, 3 can be stably operated by the flow of oil in proportion to moving distances of the high loaded downstream spool 7 and the low loaded upstream spool 4.
    • 目的:为了提供适合于与每个负载压力无关的位移的油流,并获得稳定的操作和组合控制,通过在最上游的流量控制阀芯以液压方式将油输送到下部位置的阀芯 控制器。 构成:如果阀芯4向右移动,则允许加压油在致动器3中流动,并且如果油的压力增加到大于弹簧21的张力,则阀芯13向左移动, 将油流出到通道9,并且增加压力装置10之前的压力,以减少泵11的输送量。可以通过开口切口18a,18b选择任选量的流量。 如果阀芯4,7向右移动,则泵11从通道9的输送量被压力装置10增加,并且油从阀芯7被供给到致动器8。 阀芯7的升高高于阀芯4的压力,阀芯13进一步向左压入,以减小通道14的开度,并且控制油向阀芯4的流入。 致动器8,3可以通过与高负载下游阀芯7和低负载上游阀芯4的移动距离成比例的油流稳定地操作。