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公开(公告)号：US09835140B2
公开(公告)日：2017-12-05
申请号：US14367738
申请日：2012-12-11
发明人： Geoffrey Morgan Henderson , Peter John Scott , Matthew James Silvester , Richard James Trudgian
IPC分类号： F03D7/02 , F03D15/00 , F03D9/25 , F03D7/04 , F16H61/4096 , F16H61/47 , F03D7/00 , F15B1/02 , F15B1/027 , F15B15/20 , F16H47/04
CPC分类号： F03D15/00 , F03D7/00 , F03D7/02 , F03D7/0276 , F03D7/04 , F03D9/25 , F03D15/10 , F05B2260/40311 , F05B2270/101 , F05B2270/1014 , F05B2270/327 , F15B1/021 , F15B1/027 , F15B15/202 , F15B2201/411 , F16H47/04 , F16H61/4096 , F16H61/47 , Y02E10/722 , Y02E10/723 , Y02P80/158
摘要： A hydraulic control system HCS for controlling a variable ratio transmission of a power generating system. A hydraulic motor/pump unit 140 is operably connected to a superposition gear, and is connected to a hydraulic circuit that comprises an orifice 28 and/or a relief valve 29 that opens at a predetermined hydraulic pressure. The hydraulic circuit switches between a variable low-speed operating mode and a torque limiting high-speed operating mode. In the torque limiting high-speed operating mode the hydraulic motor/pump unit 140 is driven by the superposition gear and drives hydraulic fluid through the orifice 28 and/or relief valve 29 to provide a passive torque limiting function. In the variable low-speed operating mode the hydraulic motor/pump unit 140 drives the superposition gear and the hydraulic control system provides a desired rotor 101 speed by controlling hydraulic fluid flow rate through the hydraulic motor/pump unit 140.
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公开(公告)号：US09816539B1
公开(公告)日：2017-11-14
申请号：US14219666
申请日：2014-03-19
CPC分类号： F15B11/22 , B30B15/16 , F15B2211/3051 , F15B2211/3059 , F15B2211/7056 , F15B2211/7107 , F15B2211/7114 , F15B2211/782
摘要： Motion of rams in fluid cylinders to drive machine parts is equalized by equalization chambers between drive chambers for equalizing outward and inward driven motion of the rams and the attached machine parts, irrespective of portions of loads and forces on the machine parts in relation to the rams. Duplicated machine parts may be closely positioned or widely separated, while providing the same controlled equalized movement irrespective of loading. The movable elements may be tilted to new angular positions before they are translated by the rams.
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公开(公告)号：US20170314583A1
公开(公告)日：2017-11-02
申请号：US15497509
申请日：2017-04-26
CPC分类号： F15B15/204 , B64C1/1423 , E05F1/105 , E05F3/108 , E05F3/12 , E05F3/224 , E05Y2201/424 , E05Y2201/474 , E05Y2800/205 , E05Y2800/24 , E05Y2800/404 , E05Y2900/502 , F15B15/1447 , F15B15/149 , F15B15/226 , F15B15/227
摘要： An actuator includes a piston assembly movably disposed within an assembly housing having a fixedly supported end and an opposing end that receives a movable piston assembly. The piston assembly includes a piston rod and an attached piston head having a fixed orifice as well as an orifice with a check valve to create rate control of the assembly. Hydraulic fluid is caused to move through the axially movable piston head based on compressive and tensile loads imparted to the assembly. A plurality of pre-loaded springs are configured to selectively provide pressure relief in the event the orifices of the piston become clogged, wherein the plurality of pre-loaded springs, such as disc springs, further provide an energy absorbing function of the assembly based on loading conditions.
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公开(公告)号：US09777752B2
公开(公告)日：2017-10-03
申请号：US14971657
申请日：2015-12-16
CPC分类号： F15B15/08 , F01B19/04 , F15B15/125 , F15B15/14 , F15B15/149 , F15B15/20
摘要： A flexible pneumatic actuator assembly includes a front base, a rear base, a length of flexible tubing having a front end secured to the front base and a rear end secured to the rear base, a flexible piston rod extending through an aperture in the front base and into an internal volume of the length of flexible tubing, and a piston secured to the piston rod within the internal volume of the length of flexible tubing. The piston is configured to maintain an air tight seal against an inner wall of the tubing upon bending of the tubing in a region including the piston.
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公开(公告)号：US20170167114A1
公开(公告)日：2017-06-15
申请号：US15371743
申请日：2016-12-07
发明人： Karla Winkel , Martin Kunigk , Heinz Otto
CPC分类号： E02F9/2267 , B66C3/02 , E02F3/308 , E02F3/402 , E02F3/407 , E02F3/4075 , E02F3/42 , E02F9/2271 , E21C27/30 , F15B11/024 , F15B15/202 , F15B2211/25 , F15B2211/50527 , F15B2211/7052
摘要： A hydraulic valve block configured to specifically control an operation of a clam actuator of a face shovel bucket of a face shovel machine is disclosed. The hydraulic valve block comprises a first inlet, a second inlet, a first outlet connected to the first inlet via a first line and a second outlet connected to the second inlet via a second line. The hydraulic valve block further comprises a two port two position directional control valve interconnected between the first line and the second line, a first pressure relief valve interconnected between the first line and the second line and arranged in series with the two port two position directional control valve, and a second pressure relief valve interconnected between the first line and the second line and arranged in parallel to the first pressure relief valve and the two port two position directional control valve.
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公开(公告)号：US09657754B2
公开(公告)日：2017-05-23
申请号：US14005552
申请日：2012-04-03
申请人： Nobuhisa Matsushima
发明人： Nobuhisa Matsushima
CPC分类号： F15B15/20 , F15B11/0423 , F15B13/024 , F15B15/02 , F15B2211/20553 , F15B2211/3111 , F15B2211/50518 , F15B2211/528 , F15B2211/55 , F15B2211/6346 , F15B2211/6652 , F16K17/06 , F16K17/30
摘要： There is provided a hydraulic circuit which can further improve a responsive characteristic in a pressure reducing operation and a reliability in the pressure reducing operation of a relief valve device, when a main circuit pressure exceeds a predetermined pressure. A relief valve device for reducing the main circuit pressure in the hydraulic circuit including a hydraulic pump includes a first valve unit having a pilot spool and a pilot spring, a position of the pilot spool being determined by a balance between a throttle pressure supplied from the main circuit via a throttle oil passage and the control pressure and a biasing force of the pilot spring, and releasing the main circuit pressure outward via the throttle oil passage, and includes a second valve unit having a valve piston and a valve spring, a position of the valve piston being determined by a balance between the main circuit pressure and the throttle pressure and the biasing force of the valve spring, and releasing the main circuit pressure outward.
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公开(公告)号：US09611872B2
公开(公告)日：2017-04-04
申请号：US14249813
申请日：2014-04-10
申请人： John Russell Finley
发明人： John Russell Finley
CPC分类号： F15B15/204 , F01B7/16 , F01B11/001 , F01B11/009 , F15B11/15
摘要： A hydraulic cylinder is provided. The hydraulic cylinder includes a casing with a longitudinal axis defined therethrough, a first fluid inlet defined in the casing, a second fluid inlet defined in the casing, a first fluid outlet defined in the casing, a second fluid outlet defined in the casing, a shaft extending along the longitudinal axis, a first switching valve mounted to the shaft, a second switching valve mounted to the shaft, and a piston mounted to the shaft between the first switching valve and the second switching valve, wherein the hydraulic cylinder is configured such that when a fluid is supplied to the first and second fluid inlets, the shaft, the first and second switching valves, and the piston oscillate back and forth along the longitudinal axis.
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公开(公告)号：US09573232B2
公开(公告)日：2017-02-21
申请号：US14237410
申请日：2012-03-26
申请人： Hideaki Yokota , Keitaro Yonezawa
发明人： Hideaki Yokota , Keitaro Yonezawa
CPC分类号： B23Q3/06 , B25B5/04 , B25B5/06 , B25B5/061 , B25B5/062 , F15B15/1409 , F15B15/1447 , F15B15/204
摘要： A first piston for high load is inserted into a housing so as to be movable vertically, and a second piston for low load is inserted into a cylindrical hole of the first piston so as to be movable vertically. An output portion projects from the second piston to above the housing. A first spring for high load and a second spring for low load are mounted in a spring chamber defined by both pistons and. Both springs and are mounted so as to urge the first piston and the second piston upward. A switching mechanism disposed in the pressure fluid chamber at a side opposite to the spring chamber, connects the first piston selectively to the housing or the second piston.
摘要翻译： 用于高负载的第一活塞被插入到壳体中以便可垂直移动，并且用于低负载的第二活塞被插入到第一活塞的圆柱形孔中以便可垂直移动。 输出部分从第二活塞突出到壳体的上方。 用于高负载的第一弹簧和用于低负载的第二弹簧安装在由两个活塞和两个活塞限定的弹簧室中。 两个弹簧并被安装成向上推动第一活塞和第二活塞。 在与弹簧室相反的一侧设置在压力流体室中的切换机构将第一活塞选择性地连接到壳体或第二活塞。
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公开(公告)号：US20170022759A1
公开(公告)日：2017-01-26
申请号：US15124227
申请日：2015-02-12
发明人： JENS JUNGHANS , RÜDIGER JUST
摘要： An emergency descent system includes at least one descent means formed as a ladder which is articulated on at least one supporting unit on bearing means provided for this purpose, and the descent means is designed to be unfolded about this bearing means out of a rest position in which the descent means is disposed parallel to the support means and into a working position, wherein a push-out unit and a pivot unit operatively connected thereto by means of a catch are associated with the descent means and the pivot unit drives the push-out unit by the kinetic energy generated during the unfolding, wherein the push-out unit moves away from the supporting unit at a first acute angle, wherein in the operating position the push-out unit forms an acute angle with the supporting unit and the pivot unit is held at an obtuse angle relative to the push-out unit on a stop associated with the supporting unit.
摘要翻译： 紧急下降系统包括形成为梯子的至少一个下降装置，该梯子在为此设置的轴承装置上的至少一个支撑单元上铰接，并且下降装置被设计成围绕该轴承装置展开， 其下降装置平行于支撑装置设置并且进入工作位置，其中推出单元和通过卡扣可操作地连接到其上的枢转单元与下降装置相关联，并且枢转单元驱动推出 通过在展开期间产生的动能单元，其中推出单元以第一锐角远离支撑单元移动，其中在操作位置，推出单元与支撑单元和枢转单元形成锐角 在与支撑单元相关联的止动件上相对于推出单元以钝角保持。
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120.发明授权Hydraulic or pneumatic drive for actuating a fitting comprising a control valve or selector valve 有权用于致动包括控制阀或选择阀的配件的液压或气动驱动公开(公告)号：US09528534B2
公开(公告)日：2016-12-27
申请号：US13884234
申请日：2011-10-20
申请人： Hans-Juergen Finke , Meik Brinkmann , Dirk Bracht
发明人： Hans-Juergen Finke , Meik Brinkmann , Dirk Bracht
CPC分类号： F15B15/20 , F15B13/0405 , F15B20/008 , F15B2211/315 , F15B2211/329 , F15B2211/7054 , F15B2211/8636 , F15B2211/8757
摘要： A safety circuit for valves actuated hydraulically via a positioning cylinder. The positioning cylinder in one embodiment is configured to be hydraulically or pneumatically depressurized in an emergency. The positioning cylinder has two cylinder chambers configured to be fluidically connected via a working line. A first and a second series-connected shut-off valve are provided in the working line. The positioning cylinder in another embodiment is configured to be hydraulically or pneumatically actuated in an emergency. The positioning cylinder has at least one first cylinder chamber configured, in an emergency, to be supplied with pressurized fluid via a first pressure medium flow path. A first and a second series-connected shut-off valve are provided in the first pressure medium flow path.
摘要翻译： 用于通过定位气缸液压驱动的阀的安全电路。 一个实施例中的定位气缸构造成在紧急情况下液压地或气动地减压。 定位气缸具有被配置为通过工作线流体连接的两个气缸室。 在工作线上设置有第一和第二串联连接的截止阀。 在另一个实施例中的定位气缸构造成在紧急情况下液压地或气动地致动。 定位气缸具有至少一个第一气缸室，其构造成在紧急情况下经由第一压力介质流动路径供应加压流体。 第一和第二串联连接的截止阀设置在第一压力介质流动路径中。
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