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公开(公告)号：US20220274815A1
公开(公告)日：2022-09-01
申请号：US17745613
申请日：2022-05-16
发明人： WAYNE DESORMEAU , JEFF WEAVER , GUY MATHIEU
摘要： A jack, comprising: a top plate adapted to contact a load; a base plate positioned below the top plate; at least one actuator coupled perpendicularly between the base plate and the top plate; wherein the at least one actuator is operable to move the top plate between a lowered position and a raised position to thereby lower and raise the load; and, at least one locking assembly adapted to lock the top plate in the raised position.
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公开(公告)号：US10578135B2
公开(公告)日：2020-03-03
申请号：US15855566
申请日：2017-12-27
申请人： Henning Fuhrmann
发明人： Henning Fuhrmann
摘要： In order to secure a reached extension position of a piston rod (22, 22′) of an in particular multi stage operating cylinder device (100) with at least one operating cylinder unit (50) not only through the operating pressure in the cylinder (1, 1′) of the operating cylinder unit (50) but additionally mechanically, a mechanical safety through interlocking safety elements (4a, b) in the interior of the operating cylinder device (100) is provided which is activated exclusively by the operating pressure in the first pressure cavity and disengaged by a pressure in a second operating cavity.
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公开(公告)号：US09821729B2
公开(公告)日：2017-11-21
申请号：US15161510
申请日：2016-05-23
发明人： Han Zhou , Brenna Liu , Jack Xu
摘要： The present invention, in one or more embodiments, provides a jack-positioning device of jack including a seating bottom and a loading table, where the jack-positioning device includes a base portion to support the seating bottom of the jack, an arm portion to connect the base portion, and a top portion to press against the loading table of the jack, and where the top portion along with the arm portion is to position the jack at a holding position, and the arm portion is rotatable relative to the base portion and the top portion. The jack-positioning device of the present invention may be employed to position the jack within a tight space in a relatively time efficient manner.
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公开(公告)号：US09469513B2
公开(公告)日：2016-10-18
申请号：US14588458
申请日：2015-01-01
摘要： Disclosed herein is a ratcheting, self-aligning load-lifting device featuring a ram, responsive to a pressurized medium, having at least one rack of teeth and a keyway slot, and a ratchet mechanism encircling the ram. The ratchet mechanism has at least one pawl for engagement with the rack of teeth during elevation of the ram, a set screw extending into the keyway to maintain proper alignment of the mechanism, a spring plunger radially positioned for engagement with the keyway slot after the ratchet mechanism has been rotated and the pawl has been released from the elevated rack of teeth, and a biasing means positioned within and attached to rotate the ratchet mechanism thereby urging the re-engagement of the pawl with the lowered rack of teeth.
摘要翻译： 本文公开了一种棘轮式自对准负载提升装置，其特征在于具有至少一个齿条和键槽槽的加压介质的压头和围绕该压头的棘轮机构。 所述棘轮机构具有至少一个棘爪，用于在所述冲头升高期间与所述齿条啮合，所述固定螺钉延伸到所述键槽中以保持所述机构的适当对准;径向定位以在所述棘轮之后与所述键槽槽接合的弹簧柱塞 机构已经旋转并且棘爪已经从高架齿条释放，并且偏置装置定位在并附接以旋转棘轮机构，从而推动棘爪与下齿条的重新接合。
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公开(公告)号：US20150008383A1
公开(公告)日：2015-01-08
申请号：US14326170
申请日：2014-07-08
摘要： A jack for lifting segments of a structure includes a pair of masts, a mast base, a mast cap, a hydraulic ram, a bottom bracket and a shuttle. The masts are identical and upright with a plurality of evenly spaced holes. The mast base supports the mast and the mast cap receives the upper ends of the masts and maintains the masts in a parallel, relationship. The hydraulic ram moves between a retracted position and an extended position with a stroke distance which is significantly less than the mast height. The bottom bracket is removably pinned to the masts and receives and supports the lower end of the hydraulic ram. The shuttle receives the upper end of the hydraulic ram. The bottom bracket and shuttle, when not pinned to the masts, can slide vertically up the masts. The shuttle includes features for connecting to a segment of a structure.
摘要翻译： 用于提升结构段的千斤顶包括一对桅杆，桅杆底座，桅杆盖，液压夯，底托和梭。 桅杆是相同和直立的，具有多个均匀分布的孔。 桅杆底座支撑桅杆，桅杆盖接收桅杆的上端并将桅杆保持平行的关系。 液压柱塞在缩回位置和延伸位置之间移动，行程距离明显小于桅杆高度。 底部支架可拆卸地固定在桅杆上，并接收并支撑液压夯锤的下端。 梭子接收液压油缸的上端。 底部支架和梭子，当没有固定到桅杆时，可以垂直向上滑动桅杆。 梭子包括用于连接到结构部分的特征。
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公开(公告)号：US20100012907A1
公开(公告)日：2010-01-21
申请号：US12486392
申请日：2009-06-17
申请人： Yeo (Joseph) B. Lee
发明人： Yeo (Joseph) B. Lee
摘要： A lifting apparatus may include a base frame, an upper plate and a plurality of support arms engaged with the base frame and the upper plate. The support arms may include first and second support arms adjustably engaged with the upper plate and third and fourth support arms adjustably engaged with the base frame. An exemplary embodiment may also include a power source connected to an engagement member, where the power source can be adapted to manipulate the engagement member and the engagement member can engage the plurality of support arms.
摘要翻译： 提升装置可以包括基架，上板和与基架和上板接合的多个支撑臂。 支撑臂可以包括可调节地与上板接合的第一和第二支撑臂，以及可调节地与基部框架接合的第三和第四支撑臂。 示例性实施例还可以包括连接到接合构件的电源，其中动力源可以适于操纵接合构件，并且接合构件可接合多个支撑臂。
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公开(公告)号：US5900596A
公开(公告)日：1999-05-04
申请号：US832327
申请日：1997-03-26
申请人： John W. Koshak , Paul L. Baldwin , Tony S. Huen , James L. Murphy
发明人： John W. Koshak , Paul L. Baldwin , Tony S. Huen , James L. Murphy
摘要： This invention includes a brake system for a hydraulic ram or another cylinder, that can be employed as an emergency brake for a lifting elevator. When actuated, the brake arms contact the ram circumferentially to slow and stop the falling ram. The brake arms are preferably lined with an able material that frictionally engages the ram to stop the downward motion of the ram. The brake system may be actuated by loss of hydraulic pressure, by an electronic signal from a hydraulic pressure detector, by down overspeed sensor or by an uncontrolled down motion detector. According to another aspect of the present invention, a controller, which is preferably a programmed control system, compares the actual motion of the elevator as sensed by a detector to a desired motion. Under certain conditions, if the actual motion differs from the desired motion, the controller actuates the brake.
摘要翻译： 本发明包括用于液压油缸或另一气缸的制动系统，其可用作升降升降机的紧急制动器。 当致动时，制动臂周向接触压头以减慢并停止下落的压头。 制动臂优选地衬有能够与冲头摩擦接合以阻止冲头的向下运动的能量材料。 制动系统可以由液压损失，来自液压检测器的电子信号，向下超速传感器或不受控制的向下运动检测器来致动。 根据本发明的另一方面，优选地是编程控制系统的控制器将由检测器感测的电梯的实际运动与期望的运动进行比较。 在某些条件下，如果实际运动与期望的运动不同，则控制器致动制动器。
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8.发明授权Hydraulic cylinder-piston unit provided with a mechanical safety device, particularly for pantograph type motor vehicle lifts 失效液压缸 - 活塞单元配有机械安全装置，特别适用于缩放式机动车辆升降机
公开(公告)号：US5205203A
公开(公告)日：1993-04-27
申请号：US418681
申请日：1989-06-08
申请人： Eride Rossato
发明人： Eride Rossato
CPC分类号： F15B15/261 , B66F3/30 , B66F7/0641 , B66F7/08
摘要： A hydraulic jack particularly intended for use in automobile lifts includes a safety stop mechanism including a fixed toothed rod and a piston-supported pawl mechanism which includes one or more stop members. Each of the stop members can be retracted, to allow the jack to collapse, by applying hydraulic pressure to the chamber above the piston.
摘要翻译： 特别用于汽车升降机的液压千斤顶包括安全止动机构，其包括固定齿条和包括一个或多个止动件的活塞支撑爪机构。 通过向活塞上方的腔室施加液压，可以使每个止动构件缩回以允许千斤顶塌缩。
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公开(公告)号：US4277052A
公开(公告)日：1981-07-07
申请号：US67533
申请日：1979-08-17
申请人： Franz Kallinger
发明人： Franz Kallinger
CPC分类号： B66F1/08
摘要： A jacking apparatus for selectively moving a load in either of opposite directions such as vertically upwardly and downwardly. The apparatus is adapted for use in a wide range of building constructions, such as those using slipforms, wherein heavy loads are positioned by the jacking apparatus. The apparatus includes gripping elements having portions engaging elongated structural elements for effecting desired movement of the jacking apparatus in moving the load. The gripping elements are mounted on parallelogram linkage supports for maintained parallel relationship to the longitudinal extent of the elongated structural element with which they are selectively engaged. A control device is carried by the respective upper and lower gripping devices for effecting automatic control of the gripping elements in effecting a lowering of the apparatus when desired. The control is arranged to effect a sequential releasing and gripping of the elongated structural element by the gripping elements as an incident of individual movement of the respective gripping devices.
摘要翻译： 用于选择性地将负载移动到相对方向（例如垂直向上和向下）中的顶起装置。 该装置适用于广泛的建筑结构，例如使用滑模的那些建筑结构，其中重载由起重装置定位。 该装置包括具有接合细长结构元件的部分的抓持元件，用于在移动负载时实现顶起装置的期望运动。 夹紧元件安装在平行四边形连杆支撑件上，以保持与其选择性接合的细长结构元件的纵向范围的平行关系。 控制装置由相应的上夹紧装置和下夹持装置承载，以便在需要时实现夹持元件的自动控制，从而实现装置的降低。 控制装置被布置成通过夹持元件顺次地释放和夹持细长结构元件，作为各个夹持装置的单独运动的入射。
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公开(公告)号：US4014519A
公开(公告)日：1977-03-29
申请号：US653877
申请日：1976-01-30
申请人： Theodore M. Leigh
发明人： Theodore M. Leigh
CPC分类号： F15B15/261 , B66C23/80 , B66F3/30 , F15B2015/1495
摘要： A hydraulic jack, suitable for use as an outrigger support for a mobile crane, has a cylinder with a piston slidably received therein. Projecting from the piston is a rod that extends axially outward of the cylinder for supporting a load. The rod is externally threaded and a worm wheel nut is internally threaded to fit upon the rod. The nut is held in a fixed, axial position relative to the cylinder, and this nut must rotate on the rod to enable the rod to travel inwardly or outwardly of the cylinder. A rotatable worm is threaded to mesh with worm engaging gear teeth on the periphery of the worm wheel nut. Preferably, the thread on the worm has a helix angle with a self-locking characteristic, but the helix angle of the threads between the worm wheel nut and the piston rod is greater than the angle of friction so that there are no self-locking characteristics. The worm is driven by a hydraulic motor, that is connected with the cylinder in a hydraulic circuit, and a common control valve regulates the operation of both the cylinder and the motor.
摘要翻译： 适合用作移动式起重机的支腿支架的液压千斤顶具有可滑动地容纳在其中的活塞的气缸。 从活塞突出的是一个杆，其轴向向外延伸，用于支撑负载。 杆是外螺纹，蜗轮螺母内螺纹以适合杆。 螺母相对于气缸保持在固定的轴向位置，并且该螺母必须在杆上旋转以使杆能够向内或向外移动。 可旋转的蜗杆螺纹与蜗轮啮合齿轮齿啮合在蜗轮螺母的周边。 优选地，蜗杆上的螺纹具有具有自锁特性的螺旋角，但是蜗轮螺母和活塞杆之间的螺纹的螺旋角大于摩擦角，使得不存在自锁特性 。 蜗杆由液压马达驱动，液压马达与液压回路中的气缸连接，公共控制阀调节气缸和马达的运行。
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