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公开(公告)号：US5487480A
公开(公告)日：1996-01-30
申请号：US257704
申请日：1994-06-10
摘要： An end-of-car coupler includes a hydro-pneumatic cushioning device. The latter has a ported tube separating the hydraulic cylinder chamber from an outer annular chamber containing gas. Each port is fitted with a valve, the obturating member of each valve being a differential area piston. The valves are all closed until subjected to a certain threshold force by movement of the plunger in the cylinder when all those valves between the plunger and the end of the cylinder chamber open to allow liquid flow between the two chambers.
摘要翻译： 汽车终端耦合器包括液压气动缓冲装置。 后者具有将液压缸室与包含气体的外部环形室分离的入口管。 每个端口配有一个阀门，每个阀门的密封件是差动区域活塞。 当柱塞和气缸室的端部之间的所有这些阀打开以允许液体在两个室之间流动时，阀门全部关闭，直到经过柱塞在气缸中的移动而受到一定的临界力。
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公开(公告)号：US5465944A
公开(公告)日：1995-11-14
申请号：US244391
申请日：1994-06-13
摘要： A buffer comprising a plunger slidable in a ported tube. A metal tubular member circumferentially surrounds that part of the ported tube in which all the flow resisting ports are formed and is the radially inner wall of an annular space filled with compressed gas. The outer wall of an annular space is formed by a tubular membrane. The annular chamber between the ported tube and the metal tubular member is part of a low pressure reservoir of the buffer and communicates via an annular passage in the closed end of the buffer with the remainder of the reservoir which is an annular chamber formed between the tubular membrane and the outer tubular wall of the buffer. The metal tubular member shields the tubular membrane from the damaging effects of jets of liquid forced through the flow resisting ports during compression of the buffer. Heat generated by forcing the liquid through the flow resisting ports is carried by liquid flow from the radially inner annular chamber to the radially outer annular chamber via the annular passage and is dissipated from the radially outer annular chamber through the external tubular wall of the buffer.
摘要翻译： PCT No.PCT / GB92 / 02314 Sec。 371日期1994年6月13日 102（e）日期1994年6月13日PCT提交1992年12月14日PCT公布。 公开号WO93 / 12361 日期：1993年6月24日。一种缓冲器，包括可在端口管中滑动的柱塞。 金属管状构件周向地围绕其中形成有所有阻流端口的端口管的那部分，并且是填充有压缩气体的环形空间的径向内壁。 环形空间的外壁由管状膜形成。 插入管和金属管状构件之间的环形室是缓冲器的低压储存器的一部分，并且通过缓冲器的封闭端中的环形通道与储存器的其余部分连通，该储存器的其余部分形成在管状 膜和缓冲器的外管壁。 金属管状构件屏蔽管状膜免受在压缩缓冲器期间被迫穿过阻流端口的液体喷射的破坏作用。 通过迫使液体通过流动阻力端口产生的热量通过液体从环形腔的径向内部环形室流到径向外环形室，并通过环形通道从径向外环形室中通过缓冲器的外管壁消散。
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公开(公告)号：US5653425A
公开(公告)日：1997-08-05
申请号：US564288
申请日：1995-12-21
申请人： Ronald C. Page , John J. Bushnell , Carl F. Watts
发明人： Ronald C. Page , John J. Bushnell , Carl F. Watts
摘要： A railway buffer capsule comprising a hollow cylindrical plunger slidably mounted in a cylinder. The cylinder is closed at one end. The plunger is closed at its outer end, and in its inner end is formed a fixed area orifice of flow restricting dimensions. A floating piston slides in the bore of the plunger and separates a liquid reservoir from the remainder of the interior of the plunger which comprises a gas containing space. A stepped piston has its larger diameter exposed to pressure in the reservoir and its smaller diameter end adapted to seat and close the orifice and be exposed to compression chamber pressure. The combination of the stepped piston and the orifice is a multiplier valve which multiplies the resistance of the compressed gas to lengthwise compression of the buffer.
摘要翻译： PCT No.PCT / GB94 / 01351 Sec。 371 1995年12月21日第 102（e）日期1995年12月21日PCT提交1994年6月22日PCT公布。 公开号WO95 / 00382 日期1995年1月5日一种铁路缓冲胶囊，包括可滑动地安装在气缸中的中空圆柱形柱塞。 气缸在一端关闭。 柱塞在其外端封闭，并且其内端形成有流动限制尺寸的固定区域孔口。 浮动活塞在柱塞的孔中滑动，并将液体储存器与包括气体容纳空间的柱塞内部的其余部分分离。 阶梯式活塞具有暴露于储存器中的压力的较大直径，并且其较小直径的端部适于安置和关闭孔口并暴露于压缩室压力。 阶梯式活塞和孔口的组合是乘法阀，其将压缩气体的阻力与缓冲器的纵向压缩相乘。
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公开(公告)号：US4660687A
公开(公告)日：1987-04-28
申请号：US818135
申请日：1986-01-13
CPC分类号： B61G9/16 , F16F9/48 , Y10S411/01 , Y10S411/917 , Y10T403/1641 , Y10T403/4682
摘要： A railroad vehicle end-of-car center coupler includes a telescopic energy absorber comprising a hollow cylindrical plunger in a cylinder having one closed end. The plunger has an aperture in its inner end wall. A perforated metering tube is fixed in the closed end wall by a special fixing arrangement. It projects through the aperture and carries an annular piston head which slides in the bore of the plunger. A floating piston divides the interior of the plunger into a gas space and a liquid chamber. Four direct acting pressure relief valves are mounted in the piston head. Conduits through the tube connect their inlets to respective ones of four axially-spaced ports in the outer surface of the tube so that they all communicate with the annular chamber that surrounds the tube within the plunger when the absorber is compressed and so that they are progressively cut-off from such communication during the final stages of extension of the absorber. The valves are designed to open when a predetermined pressure is established in the annular chamber.
摘要翻译： 铁路车辆车尾中心耦合器包括伸缩能量吸收器，其包括在具有一个封闭端的气缸中的中空圆柱形柱塞。 柱塞在其内端壁上具有孔。 穿孔计量管通过特殊的固定装置固定在封闭的端壁中。 它通过孔突出，并带有在柱塞的孔中滑动的环形活塞头。 浮动活塞将柱塞的内部分成气体空间和液体室。 四个直接作用的安全阀安装在活塞头中。 通过管的导管将其入口连接到管的外表面中的四个轴向间隔开的端口中的相应的入口，使得当吸收器被压缩时，它们都与在柱塞内围绕管的环形室连通，并且使得它们逐渐地 在吸收器的延伸的最后阶段期间从这种通信中切断。 阀被设计成在环形室中建立预定压力时打开。
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公开(公告)号：US4572080A
公开(公告)日：1986-02-25
申请号：US662608
申请日：1984-10-16
摘要： Movable buffer stop apparatus (10) for a railway vehicle comprises a stop plate (27) on an arm (21), and a support strut (31) movable angularly relative to the arm (21) by an hydraulic cylinder (33) between raised and lowered conditions of the apparatus (10). The arm (21) and the support strut (31) are mounted on a truck (14) which cooperates with a fixed energy absorbing buffer (35) in a sunken pit (11).
摘要翻译： PCT No.PCT / GB84 / 00087 Sec。 371日期1984年10月16日 102（e）日期1984年10月16日PCT提交1984年3月19日PCT公布。 公开号WO84 / 03671 日期：1984年9月27日。用于铁路车辆的可移动缓冲停止装置（10）包括在臂（21）上的止动板（27）和支撑支柱（31），支撑支柱（31）可相对于臂（21）成角度地移动 液压缸（33）在设备（10）的升高和降低的条件之间。 臂（21）和支撑支柱（31）安装在与凹陷坑（11）中的固定能量吸收缓冲器（35）配合的卡车（14）上。
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