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

IPC分类号： B61G9/08 ,  F16F9/06

CPC分类号： F16F9/061 ,  B61G9/08

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。

公开(公告)号：US4304338A

公开(公告)日：1981-12-08

申请号：US89550

申请日：1979-10-29

申请人： Ross G. Carle ,  Charles L. Van Auken

发明人： Ross G. Carle ,  Charles L. Van Auken

IPC分类号： B61G9/08 ,  B61G9/16

CPC分类号： B61G9/08 ,  B61G9/16

摘要： A cushion assembly having an outer cylinder and a metering cylinder extending between end caps and defining an annular reservoir therebetween with communication being provided by metering orifices distributed along the length of the metering cylinder. A piston is slideable in the metering cylinder having a first piston rod connected to one side and a second piston rod of hollow construction connected to the other side, the first piston rod having a head at its outer end. The head and the first end cap define a gap between them when the first piston rod is in its contracted state. Stop members on the slideable sill and frame of the car occupy normal side by side positions in register with one another in the gap, so that a shock applied to the sill in either direction causes the stop members to shift out of register with one another elongating the gap so as to tension and extend the first piston rod. The device is charged with a combination of hydraulic fluid and gas under pressure so that as the piston moves fluid restrictedly flows through the orifices from a position in front of the piston through the reservoir to a position behind the piston to cushion the shock, the second piston rod having a substantially greater diameter than the first, presenting a greater axially projected area to the pressurized fluid, so that the piston is promptly returned to its retracted state in readiness for a subsequent shock.

摘要翻译： 一种衬垫组件，具有外筒和在端盖之间延伸并在其间限定环形容器的计量气缸，其间通过沿计量气缸的长度分布的计量孔提供连通。 活塞在计量筒中可滑动，其具有连接到一侧的第一活塞杆和与另一侧连接的中空结构的第二活塞杆，第一活塞杆在其外端具有头部。 当第一活塞杆处于收缩状态时，头部和第一端盖限定它们之间的间隙。 轿厢的可滑动轨道和框架上的停止构件在间隙中彼此并排登记，从而在两个方向上对门槛施加的冲击使得停止构件相互移出另一个伸长的位置 该间隙以便张紧和延伸第一活塞杆。 该装置在压力下充满液压流体和气体的组合，使得当活塞移动流体受到限制地从活塞前部通过储存器的位置流过孔到活塞后方的位置以缓冲冲击时，第二 活塞杆具有比第一个更大的直径，对加压流体具有更大的轴向投影面积，使得活塞迅速地返回到其缩回状态，以备随后的冲击。