公开(公告)号：US12012130B2

公开(公告)日：2024-06-18

申请号：US17044826

申请日：2018-10-30

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Guangjun Gao ,  Weiyuan Guan ,  Shuai Wang

IPC: B61G11/12 ,  B61D15/06 ,  B61F19/04

CPC classification number: B61G11/12 ,  B61D15/06 ,  B61F19/04 ,  B60Y2200/30

Abstract: A reusable collision energy absorption device for a rail vehicle includes an impacted rod, a damping structure including a damping plug, a guide tube and a damping elastic element, a return structure including a return piston and an elastic return element, an outer tube having a tubular structure, and an interior partitioned into a front cavity and a rear cavity through a partition plate provided with a damping hole in the form of a through hole. A portion of the damping plug is in the damping hole when the damping plug is in an initial position, and the damping plug can move in a front-rear direction when the device is impacted. A gap between a radial thickest portion of the damping plug and the damping hole allows the fluid to circulate between the front cavity and the rear cavity.