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公开(公告)号：US20130220961A1
公开(公告)日：2013-08-29
申请号：US13408502
申请日：2012-02-29
申请人： ALLEN SMITH
发明人： ALLEN SMITH
摘要： A railcar cushioning device has a hydraulic cylinder holding pressurized fluid. The cylinder has a cylinder body with an inner chamber and a reservoir chamber. A piston is movably positioned in the inner chamber. The cylinder body has a bleed opening allowing bleed flow from the inner chamber to the reservoir chamber. A bleed orifice valve in the bleed opening has a valve housing and a poppet received in the valve housing that moves to allow and restrict fluid flow through a bleed flow path based on the pressure of the fluid. The poppet has an orifice channel allowing a restricted fluid flow through the valve housing when the pressure in the inner chamber is greater than the pressure in the reservoir chamber.
摘要翻译： 轨道车缓冲装置具有保持加压流体的液压缸。 气缸具有带有内室和储存室的气缸体。 活塞可移动地定位在内室中。 气缸体具有允许从内室流到储存室的流出口。 排出口中的排气孔阀具有阀壳体和容纳在阀壳体中的提升阀，该提升阀基于流体的压力而移动以允许和限制流体通过排出流动路径流动。 当内室中的压力大于储存室中的压力时，提升阀具有允许受限制的流体流过阀壳体的孔口通道。
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公开(公告)号：US06923331B2
公开(公告)日：2005-08-02
申请号：US10634559
申请日：2003-08-05
申请人： Howard Sommerfeld
发明人： Howard Sommerfeld
CPC分类号： B61G9/08
摘要： A friction-type draft gear assembly includes a housing having an open front and closed rear portions. A compressible cushioning element is positioned within the rear portion with a seating arrangement abutting one end thereof adjacent the open front portion. A friction cushioning element is provided in the open front portion of the housing. A spring release mechanism is adapted for continuously urging the friction cushioning element outwardly from the compressible cushioning element thereby releasing such friction cushioning element after compression of such draft gear assembly. A compressible cushioning element includes a hydraulic cylinder having a slidable piston to define a high pressure chamber and a low pressure chamber. A metering pin disposed within the piston has aworking portion of a decreased diameter for increasing shock absorbing capacity of such draft gear assembly.
摘要翻译： 摩擦式起落架组件包括具有敞开的前部和闭合的后部的壳体。 可压缩的缓冲元件位于后部中，并具有邻近开口前部邻接其一端的座位装置。 摩擦缓冲元件设置在壳体的敞开前部。 弹簧释放机构适于从可压缩缓冲元件向外持续地推动摩擦缓冲元件，从而在压缩该牵引齿轮组件之后释放该摩擦缓冲元件。 可压缩缓冲元件包括具有可滑动活塞以限定高压室和低压室的液压缸。 设置在活塞内的计量销具有减小直径的工作部分，以增加这种牵引装置的冲击吸收能力。
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公开(公告)号：US5746335A
公开(公告)日：1998-05-05
申请号：US637045
申请日：1996-05-01
申请人： Steve A. Brough , John F. Deppen
发明人： Steve A. Brough , John F. Deppen
CPC分类号： B61G9/08
摘要： A double acting center-of-car cushioning device mounted in the sliding sill of a rail car includes two pistons and rods, two pressure cylinders and mirror image sets of flow orifices in the pressure cylinders. The piston rods extend out from ends of the pressure cylinders and engage a fixed sill of the rail car. Movement of the pistons within the pressure cylinders forces fluid through the flow orifices resulting in efficient dampening.
摘要翻译： 安装在轨道车厢的滑动门槛中的双作用中心的缓冲装置包括两个活塞和杆，两个压力缸和压力缸中的流动孔的镜像组。 活塞杆从压力缸的端部伸出，并与轨道车的固定门槛接合。 压力缸内活塞的移动迫使流体通过流动孔，从而产生有效的润湿。
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公开(公告)号：US4334624A
公开(公告)日：1982-06-15
申请号：US79051
申请日：1979-09-26
申请人： Peter J. Detmold
发明人： Peter J. Detmold
摘要： A lock-out apparatus for shock absorbing draft gear on a railway car which draft gear has a housing adapted to be fixed to one end of the railway car, a shock absorber is provided in the housing to cushion shock on the coupler of a railway car at the one end. The shock absorber includes at least one movable shock absorbing member operatively connected to the coupler and a cushion cooperating with the movable member to cushion shock. The lock-out apparatus has a locking member slidably mounted in the housing for movement between a locking and an unlocking position. There is a fluid motor for moving the locking member, and a conduit connecting the fluid motor to a brake line on the railway car whereby a change in the pressure of the fluid in the brake line will operate the fluid motor to move the locking member to a locking position to prevent movement of the movable shock absorbing member and to thus lock out the draw gear.
摘要翻译： 一种用于铁路车辆上的减震牵引装置的锁定装置，该牵引齿轮具有适于固定在该铁路车辆的一端的壳体，该减震器设置在该壳体中以缓冲铁路车辆的联接器上的冲击 在一端 所述减震器包括至少一个可移动的减震构件，其可操作地连接到所述联接器和与所述可移动构件配合以缓冲冲击的缓冲垫。 锁定装置具有可滑动地安装在壳体中用于在锁定和解锁位置之间移动的锁定构件。 存在用于移动锁定构件的流体马达和将流体马达连接到铁路车辆上的制动管线的导管，由此制动管路中的流体的压力变化将使流体马达运动以将锁定构件移动到 锁定位置，以防止可移动的减震构件的运动并因此锁定拉出齿轮。
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公开(公告)号：US4040523A
公开(公告)日：1977-08-09
申请号：US663400
申请日：1976-03-03
申请人： Ross G. Carle , James R. Reinhardt
发明人： Ross G. Carle , James R. Reinhardt
摘要： An end-of-car hydraulic pneumatic cushioning device for connecting to the coupler of a railway car having a piston mounted within a cylinder and a piston rod secured to the piston extending rearwardly from the cylinder. The piston divides the cylinder into a front high pressure chamber and a rear low pressure chamber, and a gaseous and liquid fluid mixture is provided in both the high and low pressure chambers. The piston carries normally closed metering valves which open in buff travel a buff flow passage between the low and high pressure chambers after around two inches or more of buff travel from neutral extended position, and open upon return draft travel after buff travel a restricted draft flow passage between the low and high pressure chambers. The gas in the fluid mixture particularly upon high velocity impact loads is dispersed throughout the liquid and thus has a large contact area with the liquid to minimize the increase in temperature of the gas upon being compressed.
摘要翻译： 一种汽车终端液压气动缓冲装置，用于连接到具有安装在气缸内的活塞的铁路车辆的联接器和固定到从缸体向后延伸的活塞的活塞杆。 活塞将气缸分成前高压室和后低压室，并且气体和液体流体混合物设置在高压室和低压室中。 活塞承载常闭密闭的计量阀，打开缓冲器，在低压和高压室之间的缓冲流动通道中，大约两英寸或更长的抛物线从中性延伸位置行进，并且在凸轮行程之后返回牵伸行程受限制的送风流量打开 低压室和高压室之间的通道。 流体混合物中特别是高速冲击载荷下的气体被分散在整个液体中，因此与液体具有大的接触面积，以使压缩时气体的温度升高最小化。
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公开(公告)号：US3917075A
公开(公告)日：1975-11-04
申请号：US53280474
申请日：1974-12-16
申请人： PULLMAN INC
摘要： In a railway car underframe center sill structure, an end-of-car cushion unit of the hydro pneumatic type for absorption of buff forces and located in the cushion pocket at the end of the center sill and coupled with the yoke and coupler arrangement. The cushion unit has a moveable hydraulic fluid containing cylinder connecting with the yoke and coupler arrangement and fixed piston having its inner piston rod end connected in the center sill and its outer piston head orificed within the cylinder to receive reciprocably a central metering pin fixed in the cylinder for transfer of hydraulic fluid to either side of the piston head and in and out of draft chamber portions of the cylinder. A moveable gas piston is in the inner end of the fixed piston and has gas under pressure on the piston inner end, the piston outer side being in hydraulic fluid communication with the orifice. The gas piston has a rolling seal connection and stop within the fixed piston. A rolling seal in the form of a boot connects the cylinder and piston and acts as a dust protector for the piston rod. An alternate form of gas piston slidingly floats in the hydropneumatic chamber in the fixed piston. The cushion arrangement is also provided with buff cylinder stops that hit the striker and provided with recessed draft cylinder stops near the outer end of the cylinder.
摘要翻译： 在铁路车底架中心门槛结构中，液压气动式的终端缓冲单元，用于吸收抛光力，并位于中间梁底端的缓冲槽中，并与轭和联轴器装置耦合。 缓冲单元具有与轭和联接器装置连接的可移动液压流体容纳圆筒和固定活塞，其内活塞杆端连接在中心槛中，其外活塞头被引导到气缸内，以可往复运动地固定在中心计量销 用于将液压流体传送到活塞头的任一侧并进出气缸的通气室部分的气缸。 可移动气体活塞位于固定活塞的内端，并且在活塞内端处具有压力下的气体，活塞外侧与孔口处于液压流体连通。 气体活塞具有滚动密封连接并在固定活塞内停止。 靴子形式的滚动密封件连接气缸和活塞，并用作活塞杆的防尘器。 一种替代形式的气体活塞滑动地浮动在固定活塞中的液压气动室中。 缓冲装置还设置有撞击撞针并且在气缸的外端附近设置有凹陷的气缸止动件的抛油缸止动件。
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公开(公告)号：US3791532A
公开(公告)日：1974-02-12
申请号：US3791532D
申请日：1972-10-16
申请人： PULLMAN INC
发明人： PETERSON W , ROUSSEAU G
CPC分类号： B61G9/22
摘要： A cushioned underframe of the stationary and sliding sill type includes a cushion pocket within which a hydraulic cushion is supported. The cushion is connected to a carrier plate which provides for installation of the cushion and cover as an integral unit with the cover secured to the stationary sill.
摘要翻译： 固定和滑动门槛类型的缓冲底架包括缓冲口袋，液压缓冲垫支撑在该衬垫口中。 垫子连接到承载板，该承载板提供将垫和盖作为整体单元的安装，其中盖固定到固定的门槛上。
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公开(公告)号：US3721351A
公开(公告)日：1973-03-20
申请号：US3721351D
申请日：1970-09-14
申请人： HOLLAND CO
发明人： CHIERICI O , SMITH J
CPC分类号： B61G9/08
摘要： A combined hydraulic and resiliently cushioned railway car draft appliance employing a fluid cylinder, a piston disposed within the cylinder, a piston rod attached to the piston and connected to be moved by buff or draft forces applied to the draft appliance, and having a urethane collar disposed within the cylinder surrounding the piston rod. The urethane collar is effective to improve train action by providing a variable cushioned resistance in draft and does not bottom out as a spring might to allow metal to metal contact. The hydraulic section and coupling yoke section are separably connected thereby facilitating installation and removal. No flow control, or pressure relief valves or bellows are employed to accomplish the fluid cushioning thereby eliminating many potential repair problems.
摘要翻译： 一种组合的液压和弹性缓冲的铁路车辆牵引装置，其采用流体缸，设置在气缸内的活塞，活塞杆，附接到活塞并连接以通过施加到牵引装置的抛光或牵引力移动，并具有聚氨酯环 设置在围绕活塞杆的气缸内。 通过在通风中提供可变的缓冲阻力，聚氨酯轴环有效地改善列车动作，并且由于弹簧可能允许金属与金属的接触而不会下降。 液压部分和联接轭部分可分离连接，从而便于安装和拆卸。 不使用流量控制或压力释放阀或波纹管来完成流体缓冲，从而消除许多潜在的修复问题。
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公开(公告)号：US3713546A
公开(公告)日：1973-01-30
申请号：US3713546D
申请日：1970-11-20
发明人： DAUGHERTY D
CPC分类号： F16F13/00 , B61G9/16 , F16F9/18 , F16F9/34 , F16F2230/10
摘要： A cushioning arrangement for railroad cars that is of the ''''end of car'''' cushioning type and includes a hydraulic cylinder keyed to the car fixed center sill against buff and draft forces and having its piston rod secured to a slidably mounted coupler adapter member having flanges projecting from either side of same that each carry a resilient draft impact absorbing cushion that cooperates with fixed draft stops. A compression spring acts between the hydraulic cylinder and the adapter member to bias the ram to its neutral position after a buff stroke, and the adapter member flanges engage over solid buff limiting stops at the end of the buff stroke. The hydraulic cushion includes a combined programmed metering-pressure sensitive orifice and control arrangement that insures needed control over the ram to overcome train line tendencies.
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公开(公告)号：US3679069A
公开(公告)日：1972-07-25
申请号：US3679069D
申请日：1971-02-17
申请人： PULLMAN INC
发明人： SHAVER WILLIAM R , KNIPPEL WILLIS H
CPC分类号： B61G9/08
摘要： A railway car hydraulic cushioning unit includes a cylinder and piston assembly wherein a low pressure reservoir comprises a flexible boot which is constructed to eliminate sliding seals between the piston rod and an intermediate cylinder head. The boot is connected at one closed end to the piston rod and is connected at its other open end to an intermediate cylinder head. Adjacent the point of connection of the open end portion of the boot to the cylinder head a boot protector is provided which during reciprocation of the piston and piston rod assembly protects the flexible boot adjacent its point of connection against possible damage and rupture.
摘要翻译： 铁路车辆液压缓冲单元包括气缸和活塞组件，其中低压容器包括柔性护罩，其被构造成消除活塞杆和中间气缸盖之间的滑动密封。 靴子在一个封闭的端部连接到活塞杆，并且在其另一开口端连接到中间气缸盖。 邻近起重机的开口端部与气缸盖的连接点，提供了一个保护器，其在活塞和活塞杆组件的往复运动期间保护柔性护套，使其靠近其连接点，防止可能的损坏和破裂。
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