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公开(公告)号：US20220145847A1
公开(公告)日：2022-05-12
申请号：US17310621
申请日：2020-02-18
申请人： Flapump AS
摘要： A fluid-driven linear motor comprises a cylinder (5), a piston (4) and a piston rod (3) connected to the piston (4), wherein the two sides of the piston (4) in the cylinder (5) are alternatively supplied with fluid from a slide valve arrangement, the slide valve arrangement including a slide (9) accommodated in a chamber and which is shifted between its end positions controlled by a pilot rod (22) coaxially mounted in a through bore (12) in the slide (9). The pilot rod (22) is adapted to alternately set the through bore (12) in fluid connection with the ends of the slide (9) when the piston (4) is located in its end positions. The pilot rod (22.) is provided with an extension rod (204) adapted to slide inside a bore (203) inside said piston (5) and said piston rod (3), so that the stroke length of the linear motor can be extended. Moreover, a pressure chamber (209) is provided at the distal end of the pilot rod (22), said pressure chamber (209) being adapted to hold on the pilot rod (22) with a holding force when in its end positions until mechanical forces from the piston overcome said holding force.
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公开(公告)号：US20150040554A1
公开(公告)日：2015-02-12
申请号：US14452760
申请日：2014-08-06
申请人： Gary L. Smith , Laurens MOLENAAR
发明人： Gary L. Smith , Laurens MOLENAAR
CPC分类号： F04B49/06 , F03C1/002 , F03C1/003 , F03C1/013 , F04B17/03 , F04B49/12 , F04C2/18 , F04C15/008 , F04C2240/40 , F05C2201/00 , F05C2201/021 , F05C2201/0433 , F05C2201/0481 , F05C2201/90 , F05C2225/08 , F15B1/265 , F15B15/18 , F15B2211/20515 , F15B2211/20561 , F15B2211/27 , F15B2211/6336 , F15B2211/6651 , F15B2211/7121 , F15B2211/7128
摘要： A hydraulic linear actuator system known as the “Dynaco Stepper Pump Hydraulics System” is which is an electrically driven hydraulic pump system made of durable materials for use in an electronically controllable hydraulic system comprised of: (a) an electrically driven stepper motor; (b) a hydraulic pump to pressurize a hydraulic fluid; (c) a means to connect the stepper motor to the hydraulic pump; (d) a pressurized reservoir for a quantity of hydraulic fluid; (e) a means to supply pressurized fluid to a hydraulic actuator; (f) the hydraulic actuator with a means to provide linear motion to an object; (g) the means to provide linear motion to an object; (h) a means to return lowered pressurized fluid to the reservoir. An alternative embodiment is further comprised of a controller with a series of feedback signals.
摘要翻译： 被称为“Dynaco步进泵液压系统”的液压线性致动器系统是由用于电子可控液压系统的耐用材料制成的电动液压泵系统，其包括：（a）电驱动步进电机; （b）用于对液压油加压的液压泵; （c）将步进电机连接到液压泵的装置; （d）用于一定数量的液压油的加压贮存器; （e）向液压致动器供应加压流体的装置; （f）具有向物体提供线性运动的装置的液压致动器; （g）向物体提供线性运动的装置; （h）将降低的加压流体返回到储存器的装置。 另一实施例还包括具有一系列反馈信号的控制器。
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公开(公告)号：US3938426A
公开(公告)日：1976-02-17
申请号：US418309
申请日：1973-11-23
申请人： Edwin J. Hunter
发明人： Edwin J. Hunter
CPC分类号： F01L33/04 , A01G25/162 , F03C1/004 , F03C1/013 , Y10T74/1524 , Y10T74/1555
摘要： An automatic irrigation controller apparatus having a cam follower operated bank of pilot valves for operating selected pilot operated water valves throughout a watering or irrigation system is provided with a water powered means for receiving water under pressure from a source thereof and a member driven in a predetermined manner by the force of such water for driving a cam means to operate said cam followers via power transmission means between the water driven member and a cam shaft mounting said cam. A water piston is mounted in a cylinder with associated water valve means for selectively connecting the cylinder to a source of water under pressure and to a vent to provide a reciprocal movement for the piston, a return stroke for the piston being accomplished through the provision of a spring. A reciprocal piston movement is translated through a power transmission means including a drive ratchet wheel connected to the piston and a driven ratchet wheel connected to the cam shaft. An escapement mechanism is provided with a ring gear mounted about an engagement with a plurality of planetary gears mounted by a carrier about a sun gear driven by an input shaft of the apparatus connected to the cam shaft. Differences in the speed of rotation of the input shaft and the escapement means ring gear cause movement of the carrier which is connected to a valve restricting means for restricting the flow of water to the cylinder to regulate the speed of the water motor and rotation of the apparatus input shaft to that determined by the escapement mechanism.
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公开(公告)号：US5137435A
公开(公告)日：1992-08-11
申请号：US674792
申请日：1991-03-25
申请人： Frank Walton
发明人： Frank Walton
CPC分类号： F04B9/1053 , F01L21/04
摘要： A reciprocating primary fluid driven motor has a stepped piston in a housing having a center hanging actuator rod which extends into the piston to periodically cooperate with an axially shiftable connector member in the piston which operates valves which establish the reciprocating stroke of the piston by opening and closing valve members on the larger and smaller faces of the stepped piston. A block member with compression spring drivers pivotally mounted inside the piston slides on the actuator rod during movement of the piston. The drivers are compressed in response to spaced stops on the actuator rod during continued movement of the piston until a sudden over-center movement of the block member shifts the connector to operate the valve members to cause reciprocation of the piston. Quiet operation during shifting is provided by shock absorbers. No sliding seal with the actuator rod is necessary. Provision for bleeding air from the housing chamber facilitates startup. The stepped piston is connected to a secondary fluid additive pump to inject metered amounts of secondary fluid into the primary fluid stream.
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公开(公告)号：US4176520A
公开(公告)日：1979-12-04
申请号：US881757
申请日：1978-02-27
申请人： James B. Horton
发明人： James B. Horton
CPC分类号： F03C1/0135 , F04B47/04
摘要： A drive system is provided for driving the pump rod of a deep well pump. The drive system includes a lift cylinder having a piston movable therein connected to the pump rod of the well pump. The lift cylinder piston is driven by fluid pressure provided from a motor having a piston slidable within a cylinder. The motor piston is driven by fluid pressure provided by a pump. A control valve is operated in response to the movement of the lift piston to control the flow of fluid from the pump to the motor. A pressure relief valve is connected between the pump and the motor and diverts fluid pumped by the pump from the motor when the fluid pressure between the pump and the motor exceeds a predetermined level. A vent is provided in the lift cylinder above the piston to permit the free movement of the lift cylinder piston during operation and to accommodate movement of the lift piston caused by expansion of fluid and gases in the system. The drive system further includes a fluid control valve for controlling the rate of fluid flow from the motor to the lift cylinder. In another embodiment of the invention, the motor piston is driven by a power unit which reciprocates the motor piston to direct fluid to the lift cylinder for operation of the lift piston.
摘要翻译： 提供驱动系统来驱动深井泵的泵杆。 驱动系统包括提升缸，其具有可移动的活塞，其连接到井泵的泵杆。 提升缸活塞由从具有可在气缸内滑动的活塞的马达提供的流体压力驱动。 电机活塞由泵提供的流体压力驱动。 响应于提升活塞的运动来控制控制阀以控制从泵到电动机的流体流动。 当泵和电动机之间的流体压力超过预定水平时，压力释放阀连接在泵和电动机之间，并将由泵泵送的流体从电动机转向。 在升降缸中在活塞上方设置通风口，以允许提升缸活塞在运行期间自由移动，并适应由系统中流体和气体的膨胀引起的提升活塞的运动。 驱动系统还包括用于控制从电动机到提升缸的流体流量的流体控制阀。 在本发明的另一个实施例中，马达活塞由动力单元驱动，该动力单元使马达活塞往复运动，以将流体引导到提升缸以用于提升活塞的操作。
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公开(公告)号：US1597162A
公开(公告)日：1926-08-24
申请号：US75829824
申请日：1924-12-26
CPC分类号： F01L25/063 , F03C1/0135 , F04B9/1073
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公开(公告)号：US11441534B2
公开(公告)日：2022-09-13
申请号：US17310621
申请日：2020-02-18
申请人： Flapump AS
IPC分类号： F03C1/007 , F04B47/08 , E21B43/12 , F01B11/00 , F03C1/013 , F04B9/105 , F15B15/14 , F04D13/04
摘要： A fluid-driven linear motor comprises a cylinder, a piston, and a piston rod connected to the piston. Two sides of the piston in the cylinder are alternately supplied with fluid from a slide valve arrangement. The slide valve arrangement includes a slide and a pilot rod adapted to alternately set a through-bore of a slide in fluid connection with the ends of the slide when the piston is located in its end positions. The pilot rod is provided with an extension rod adapted to move inside a bore of the piston and the piston rod, so that the stroke length of the linear motor can be extended. A pressure chamber is provided at the distal end of the pilot rod. The pressure chamber is adapted to hold the pilot rod with a holding force when in its end positions until mechanical forces from the piston overcome said holding force.
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公开(公告)号：US10690114B1
公开(公告)日：2020-06-23
申请号：US16276509
申请日：2019-02-14
申请人： KING SAUD UNIVERSITY
摘要： A bladeless wind turbine that creates electrical energy using hydraulically connected pistons. The system may include a disk, a small piston in fluid communication with a large piston, and a crankshaft attached to the large piston. The disk transfers forces from the wind to the small piston. Hydraulic fluid then transfers the forces to the larger piston. When the disk and associated small piston have been forced to the end of their stroke by the wind, a gate in the disk is opened to reduce wind force on the disk by allowing air to travel through the disk. Consequently, the disk and associated small piston are pushed back to the beginning of the stroke by the pressure created by the large piston's weight. This process is repeated by closing the gate in the disk. A crankshaft powering an electric generator is turned by the movement of the large piston.
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公开(公告)号：US4458579A
公开(公告)日：1984-07-10
申请号：US319964
申请日：1981-11-10
申请人： James W. Rasmussen
发明人： James W. Rasmussen
CPC分类号： F03C1/0135 , F01L15/12 , F03C1/0076
摘要： A hydraulically driven reciprocating motor (10) includes a hydraulic cylinder (12) and a piston (60) mounted for reciprocation within the cylinder. The piston has passageways (74) formed therethrough which are normally sealed by a floating valve (90). Rods (76) are carried by the piston (60) and normally project from one end thereof. When the piston (60) reaches the limit of its travel in one direction the rods (76) disengage the floating valve (90), thereby opening the passageways (74) through the piston (60) to permit movement of the piston (60) in the opposite direction. When the piston (60) reaches the limit of its travel in the opposite direction, the floating valve (90) again seals the passageways (74) through the piston (60) to complete the operating cycle of the motor (10).
摘要翻译： 液压驱动的往复运动马达（10）包括液压缸（12）和活塞（60），该活塞安装用于在气缸内往复运动。 活塞具有通过其形成的通道（74），其通常由浮阀（90）密封。 杆（76）由活塞（60）承载，并且通常从其一端突出。 当活塞（60）达到其在一个方向上行进的极限时，杆（76）脱离浮动阀（90），从而通过活塞（60）打开通道（74）以允许活塞（60）的运动， 在相反的方向。 当活塞（60）达到相反方向行进的极限时，浮动阀（90）再次通过活塞（60）密封通道（74），以完成电动机（10）的操作循环。
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公开(公告)号：US4077303A
公开(公告)日：1978-03-07
申请号：US676867
申请日：1976-04-14
申请人： Peder Ulrik Poulsen
发明人： Peder Ulrik Poulsen
摘要： A mechanism for generating a high impact force for hammering, pounding, stamping, forging or similar operations. A piston is slidably mounted in a fluid pressure chamber, and has a larger cross sectional area at one end of the chamber than at the other end thereof. A fluid is introduced into the chamber under pressure, and exerts a net axial force on the large cross section end of the piston. One end of the piston outside the chamber forms a cam, which is engaged by a spring loaded cam follower to prevent axial movement of the piston until the force thereon exceeds a predetermined value. When the force on the piston exceeds said value, the cam is suddenly disengaged from its follower, permitting rapid movement of the piston under the fluid pressure. When the piston reaches the end of its travel, fluid is permitted to leave the chamber so that the pressure on the piston rapidly decreases, and the spring loaded cam follower acts on the cam to return the piston to its initial position.
摘要翻译： 用于产生用于锤击，冲击，冲压，锻造或类似操作的高冲击力的机构。 活塞可滑动地安装在流体压力室中，并且在腔的一端具有比在其另一端更大的横截面积。 在压力下将流体引入室中，并且在活塞的大截面端施加净轴向力。 在室外的活塞的一端形成凸轮，该凸轮由弹簧加载的凸轮从动件接合，以防止活塞的轴向移动，直到其上的力超过预定值。 当活塞上的力超过所述值时，凸轮突然从其随动件脱离，允许活塞在流体压力下快速移动。 当活塞到达其行程结束时，允许流体离开室，使得活塞上的压力快速减小，并且弹簧加载的凸轮从动件作用在凸轮上以将活塞返回到其初始位置。
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