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1. 发明授权

US4175667A Method of preshortening draft gear 失效
标题翻译：预备装置的方法
公开(公告)号：US4175667A
公开(公告)日：1979-11-27
申请号：US819258
申请日：1977-07-27
申请人： Arthur M. Dillner , Walter H. Merker, Jr.
发明人： Arthur M. Dillner , Walter H. Merker, Jr.
IPC分类号： B61G9/06 , B61G11/00 , B61G9/02 , B61G9/04
CPC分类号： B61G11/00 , B61G9/06
摘要： During manufacture of the draft gear and before it is inserted into the railway car, the piston is positioned in the cylinder in a preshortened position. Part of the fill of flowable, normally solid material is inserted into the cylinder about the piston rod to hold the piston in the preshortened position and the remainder of the fill is inserted between the piston and the closed end of the cylinder. The part of the fill inserted about the piston rod may be in the form of a collar or in the form of particulate material introduced through a port radially opposite the piston rod. This holds the piston in the preshortened position so that the draft gear can easily be inserted into the railway car. After the railway car is put into service the part of the fill about the piston rod breaks down and the piston returns to its normal operating position.
摘要翻译：在起落架的制造过程中，在将其插入铁路车辆之前，活塞以预先的位置定位在汽缸中。可流动的，常规固体材料的一部分填充物围绕活塞杆插入缸体中，以将活塞保持在预先位置，并且填充物的其余部分插入在活塞和气缸的封闭端之间。插入在活塞杆周围的填充部分可以是套环的形式，也可以是通过径向相对于活塞杆的端口引入的颗粒材料的形式。这将活塞保持在预先安装的位置，使得牵引齿轮能够容易地插入到铁路车辆中。在铁路车辆投入使用后，活塞杆周围的部分填充物就会分解，活塞恢复到正常的运行位置。

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