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此缓冲装置装于中梁内部。图示为压缩状态。缸筒12与法兰盘22相焊接。勾贝体14与空心勾贝杆16相焊接,空心勾贝杆的另一端用螺纹与法兰盘23相连接。复原弹簧20支撑于法兰盘22和23之间。两法兰盘外端装于自
The buffer device installed in the beam inside. The figure shows the compressed state. The cylinder 12 is welded to the flange 22. The hook body 14 is welded with the hollow hook rod 16, and the other end of the hollow hook rod is threadedly connected with the flange 23. The recovery spring 20 is supported between the flanges 22 and 23. Two flange mounted on the outside self