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公开(公告)号：US20190293093A1
公开(公告)日：2019-09-26
申请号：US16071327
申请日：2016-11-17
申请人： SAAB AB
发明人： Magnus LANDBERG
摘要： A fluid actuator arrangement comprises a first cylinder housing including a first head member and a second head member; a first piston body is slidable arranged in said first cylinder housing; the first piston body divides the first cylinder housing interior into a first cylinder chamber and a second cylinder chamber, at least the first cylinder chamber is coupled to a fluid supply. The first piston body exhibits a first through-bore and a second through-bore that extend through the first piston body in an axial direction; a first piston rod is arranged slidable in the first through-bore and a second piston rod is arranged slidable in the second through-bore; and the first through-bore comprises a first engagement and disengagement device and the second through-bore comprises a second engagement and disengagement device, which are arranged for providing individual engagement or disengagement to or from the respective first and second piston rod.
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公开(公告)号：US20180202469A1
公开(公告)日：2018-07-19
申请号：US15863897
申请日：2018-01-06
申请人： ECO Holding 1 GmbH
发明人： David Huber , Dietmar Schulze
CPC分类号： F15B11/18 , F02B75/045 , F15B13/027 , F15B2211/30505 , F15B2211/7052 , F15B2211/71 , F16C7/06 , F16K3/24
摘要： A hydraulic module configured to control a hydraulic fluid flow of a connecting rod of an internal combustion with variable compression, the connecting rod including an eccentrical element adjustment arrangement for adjusting an effective connecting rod length, wherein the eccentrical element adjustment arrangement includes at least a first cylinder and a second cylinder configured as hydraulic chambers, wherein a first inlet for feeding hydraulic fluid into the first cylinder through a supply conduit and a second inlet for feeding hydraulic fluid into the second cylinder through the supply conduit and a first outlet for draining hydraulic fluid from the first cylinder and a second outlet for draining hydraulic fluid from the second cylinder are provided, wherein the hydraulic module includes at least one piston that is displaceable in a housing into a first switching position or a second switching position.
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公开(公告)号：US5662020A
公开(公告)日：1997-09-02
申请号：US689016
申请日：1996-07-30
申请人： Hirobumi Morita , Toshikazu Asakura
发明人： Hirobumi Morita , Toshikazu Asakura
摘要： A forward-moving inching unit and a backward-moving inching unit are built in a casing (1) which is slidable relative to a guide member (b). Each of the inching units is made up of an inching piston (60), a brake piston (61) disposed in a direction opposite to the inching piston (60), a lock member (62) disposed between the inching piston (60) and the brake piston (61) to tighten the guide member (b) when pinched between both the pistons (60, 61), a spring (63) for urging the pistons (61) to the right/to the left, a first pressure chamber (64) for pressing the brake piston (61) to the right/to the left, a second pressure chamber (65) for pressing the inching piston (60) in the opposite direction, and a valve block (2) for inputting, at the time of forward-moving inching, a fluid pressure into the second pressure chamber (65) of the forward-moving inching unit and the first pressure chamber (64) of the backward-moving inching unit and for inputting, at the time of backward-moving inching, the fluid pressure into the second pressure chamber (65) of the backward-moving inching unit and the first pressure chamber (64) of the forward-moving inching unit.
摘要翻译： 向前移动的微动单元和向后移动的微动单元内置在可相对于引导构件（b）滑动的壳体（1）中。 每个微动单元由一个微动活塞（60），一个设置在与该微动活塞（60）相反的方向上的制动活塞（61）构成，一个锁定构件（62），设置在该微动活塞（60）和 所述制动活塞（61）在两个活塞（60,61）之间夹紧时紧固所述引导构件（b），用于将活塞（61）向右/向左推动的弹簧（63），第一压力室 （64），用于将制动活塞（61）向右/向左按压;第二压力室（65），用于沿相反方向按压所述微动活塞（60）;以及阀块（2），用于在 向前移动的微动单元的向前移动的微动单元的第二压力室（65）和向后移动的微动单元的第一压力室（64）的流体压力，并且在向后移动的微动单元的第二压力室 流动压力进入向后移动的微动单元的第二压力室（65）和第一压力室（64）中的流体压力 向上移动的微动单元。
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公开(公告)号：US4691617A
公开(公告)日：1987-09-08
申请号：US829216
申请日：1986-02-14
申请人： Hans D. Purkott
发明人： Hans D. Purkott
CPC分类号： F15B15/16
摘要： A triple action, multi-segment, telescoping hydraulic ram comprising a plurality of coaxially nested, extensible cylinders adapted to be selectively extended or retracted, and a pair of lower diameter, sweep cycle cylinders adapted to be operated independently of the larger cylinders. The ram is ideal for the garbage reception area defined within the cargo area of conventional garbage trucks, for operating the compression platen for moving and compacting garbage. A terminal pin eye associated with the smaller sweep cycle cylinder may be coupled to a stationary support to rigidly brace the ram. Full extension and "sweep cycle" operation is effectuated through various input passageways defined in the pin eye through which high pressure hydraulic fluid is inputted to the ram in conjunction with various annular transmittal passageways to effectuate cylinder operation. A plurality of generally coaxial, reduced diameter internal tubes which are concentric with the operable cylinders provide a means of bridging the sweep cycle cylinders to the others. An internal retract tube, a coaxially centered piston center tube, and an internal piston slider tube which floats within the apparatus and communicates between the piston center tube and a spaced apart stationary feeder tube function to effectuate the sweep cycle phenomena of the instant cylinder, and prevent sweep cycle operation during the normal extension cycle.
摘要翻译： 一种三重动作的多段伸缩式液压油缸，其包括适于选择性地延伸或缩回的多个同轴嵌套的可延展的气缸，以及一对适于独立于较大的气缸操作的下直径扫掠循环气缸。 这种泥浆是对常规垃圾车货物区域内定义的垃圾接收区域的理想选择，用于操作压缩压板以移动和压实垃圾。 与较小扫掠循环气缸相关联的端子针眼可以联接到固定支撑件以刚性地支撑柱塞。 通过在针眼中限定的各种输入通道实现完全伸展和“扫掠循环”操作，高压液压流体通过该输入通道连接到各种环形传递通道以实现气缸操作。 与可操作的圆筒同心的多个大体上同轴的，直径较小的内管提供了一种使清扫循环滚筒与其它圆筒连接的装置。 内部缩回管，同轴中心的活塞中心管和内部活塞滑动管，其浮动在装置内并且连通活塞中心管和间隔开的静止进料管功能，以实现瞬时气缸的扫掠循环现象，以及 在正常的延长周期期间防止扫描周期操作。
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公开(公告)号：US4460324A
公开(公告)日：1984-07-17
申请号：US256956
申请日：1981-04-23
CPC分类号： F15B11/044 , B22D17/32 , F15B11/125 , F15B2211/212 , F15B2211/40515 , F15B2211/411 , F15B2211/428 , F15B2211/46 , F15B2211/6336 , F15B2211/6355 , F15B2211/6654 , F15B2211/7052 , F15B2211/75
摘要： A shot cylinder controller for injection molding machines comprises a valve connected with one side of the shot cylinder and including a valve head which is movable with respect to a seat. The valve head is connected with at least two, lineally extensible actuators, interconnected in an end-to-end relationship. The actuators are independently extended and retracted, whereby selective manipulation of the actuators varies the position of the valve head, and thereby controls the extension of the shot cylinder and regulates the speed of die injection.
摘要翻译： 用于注射成型机的喷枪气缸控制器包括与喷射缸的一侧连接并包括可相对于座椅移动的阀头的阀。 阀头与至少两个线性可延伸的致动器连接，其以端对端的关系相互连接。 致动器独立地延伸和缩回，由此执行器的选择性操纵改变了阀头的位置，从而控制了喷射缸的延伸并调节了模头注射的速度。
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公开(公告)号：US4344354A
公开(公告)日：1982-08-17
申请号：US121583
申请日：1980-02-14
CPC分类号： F15B15/16
摘要： The telescopically extendable prop (1) has at the periphery of the intermediate prop (3) abutments (30) which cooperate with a valve (15) before the intermediate prop (3) has attained its highest extended position. The valve (15) stops the extending stroke of the intermediate prop (3) and is releasing the beginning of the extending stroke of the top prop (4). As soon as a predetermined pressure is built up in the consolidating conduit (10) of the top prop (4), the valve (27) subjected to this pressure is overacting the valve (15) cooperating with the abutments (30) of the intermediate prop (3), whereupon the consolidating stroke is completed by pressurizing the intermediate prop (3) with pressurizing fluid. (FIG. 1)
摘要翻译： 在中间支撑件（3）已经达到其最高延伸位置之前，可伸缩延伸的支承件（1）在中间支撑件（3）邻接件（30）的周边处具有与阀门（15）配合的外围。 阀（15）停止中间支柱（3）的延伸行程，并且释放顶部支柱（4）的延伸行程的开始。 一旦在顶部支柱（4）的固结管道（10）中建立了预定的压力，则经受该压力的阀门（27）就越过与中间件（30）的邻接件（30）配合的阀门（15） 支柱（3），通过用加压流体对中间支柱（3）进行加压来完成固结行程。 （图。
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公开(公告)号：US4211147A
公开(公告)日：1980-07-08
申请号：US811760
申请日：1977-06-30
CPC分类号： F15B11/18 , Y10T137/86445 , Y10T137/87161
摘要： A servo-control valve for a linear hydraulic motor wherein the control valve piston is isolated from the side loading of a cam and roller by employing a cam follower plunger, as a separate detached element coaxial with the piston. The valve piston and the cam follower plunger are maintained in intimate contact due to the constant back pressure applied by the hydraulic system. The plunger is encased in a cylindrical array of balls which are preloaded between the plunger and the piston chamber walls such that the plunger experiences essentially only rolling friction, but no sliding friction, as the plunger moves. This form of preloading of the balls eliminates the backlash associated with clearance around the plunger.
摘要翻译： 一种用于线性液压马达的伺服控制阀，其中控制阀活塞通过采用凸轮随动柱塞与凸轮和滚子的侧向负载隔离，作为与活塞同轴的单独分离元件。 由于液压系统施加的恒定的背压，阀活塞和凸轮随动柱塞保持紧密接触。 柱塞被封装在圆柱形阵列的球中，其预先装载在柱塞和活塞室壁之间，使得当柱塞移动时，柱塞仅基本上经历滚动摩擦，但是没有滑动摩擦。 球的这种预加载形式消除了与柱塞周围的间隙相关联的间隙。
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8.发明授权
公开(公告)号：US4043428A
公开(公告)日：1977-08-23
申请号：US639520
申请日：1975-12-10
摘要： Apparatus for automatically sensing when an insufficient amount of fluid exists in a closed fluid power transmission system of a telescoping piston type hydraulic elevator system and circuitry shown interconnected with the control system of a typical hydraulic control system for automatically initiating a fluid restoration cycle to restore fluid to that closed fluid power transmission system to enable the system to operate in a desired manner.
摘要翻译： 用于在伸缩式活塞式液压升降机系统的封闭流体动力传动系统中存在不足量的流体的装置，以及与典型液压控制系统的控制系统互连的电路，用于自动启动流体恢复循环以恢复流体 到该闭合流体动力传递系统，以使系统能够以期望的方式操作。
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公开(公告)号：US4024794A
公开(公告)日：1977-05-24
申请号：US329248
申请日：1973-02-02
申请人： Daniel Baker Grubb
发明人： Daniel Baker Grubb
CPC分类号： B26B17/02 , B26D5/04 , Y10T137/87064
摘要： A three-position pneumatic tool having a toggle trigger for actuating a control rod which in turn controls a pair of pneumatic check-valves. Three interconnected, tandemly arranged piston assemblies are operatively associated with an air pressure source at one end while also being operatively associated with a work assembly at the other end. The trigger is spring-biased to a location wherein the tool is in a neutral workpiece engaging position. Actuation of the trigger in one direction will open one of the pneumatic valves whereupon air pressure acts upon the upper surface of one of the pistons so as to lower or retract the tool to a workpiece insertion position. Release of the trigger permits the tool to attain the workpiece engaged or neutral position. Rotation of the trigger in the opposite direction permits the other pneumatic valve to open whereupon air pressure acts upon the lower surfaces of all the pistons so as to raise and actuate the tool to the operating position.
摘要翻译： 三位置气动工具具有用于致动控制杆的拨动扳机，控制杆又控制一对气动止回阀。 三个相互连接的串列布置的活塞组件在一端与空气压力源可操作地相关联，同时在另一端可操作地与工作组件相关联。 触发器被弹簧偏置到工具处于中立工件接合位置的位置。 触发器在一个方向的致动将打开一个气动阀，由此空气压力作用在一个活塞的上表面上，以便将工具下降或缩回到工件插入位置。 触发器的释放允许工具达到工件啮合或中立位置。 触发器沿相反方向的旋转允许另一气动阀打开，由此空气压力作用在所有活塞的下表面上，以便将工具升高并致动到操作位置。
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公开(公告)号：US3983789A
公开(公告)日：1976-10-05
申请号：US541312
申请日：1975-01-15
申请人： Jurgen Dodt , Harry Rosenberg , Karl-Heinz Plester
发明人： Jurgen Dodt , Harry Rosenberg , Karl-Heinz Plester
CPC分类号： F16J15/002 , E21D15/44 , F15B15/16 , F16J15/32
摘要： A three-stage hydraulically-operated telescopic prop is disclosed having working chambers which can be charged with hydraulic pressure fluid to extend a central prop member relative to an outer prop member and an inner prop member relative to the central member. A pressure-operated spring biased non-return valve is operated by pressure to open communication between the working chambers to extend the inner member once the central member has been fully extended. The valve is also operated mechanically to open communication between the working chambers to allow retraction of the inner member when the central member has been retracted to a certain extent. Further chambers are provided between the central and outer member, and between the central and inner member, and these chambers can be charged with hydraulic pressure fluid to retract the central member relative to the outer member and the inner member relative to the central member. Guide bushings with sealing and/or packing rings are secured to the upper ends of the outer and central members to locate and guide the central and inner members during their movement.
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