RAILWAY WAGON BOGIE VIBRATION DAMPING DEVICE CAPABLE OF PROVIDING COMPOSITE VIBRATION DAMPING FORCE

WIPO Patent Application WO/2020/073420

A1

Disclosed is a railway wagon bogie vibration damping device capable of providing a composite vibration damping force. The vibration damping device is composed of a wide-body inclined wedge vibration damping part mounted on an upper plane (12) of the bottom of an inclined wedge groove at an end part of a swing bolster (21), and a spring vibration damping part mounted on a lower plane (13) of the bottom of the inclined wedge groove at the end part of the swing bolster, wherein the inclined wedge vibration damping part is connected to the spring vibration damping part via a guide seat (3). A contact friction area of an inclined wedge (1) is large. A lower vibration damping spring (4) is additionally arranged between the inclined wedge (1) and a side frame, so that the frictional resistance where a vehicle is fully loaded is increased. An upper vibration damping spring (2) and the lower vibration damping spring (4) are used in different vertical spaces. The vibration damping device has a simple and compact structure, is easy to manufacture, mount, maintain and repair, realizes the characteristic of a "stable" vibration damping performance in no-load and full-load conditions, also realizes the characteristics of an improved bogie rhombus deformation "control" capability and an improved snake motion stability, and plays an important role in improving the technical performance and operation quality of a railway wagon three-piece bogie, thereby reducing the abrasion of parts of the vehicle and reducing vehicle manufacturing, application and maintenance costs.

WO/2017/202221	BOGIE SUSPENSION TRACTION DEVICE FOR USE IN LOW-FLOOR ARTICULATED RAIL VEHICLE
JPS6154355	VIBRATION-DAMPING MEANS FOR MECHANICAL SPRING IN RAILWAY ROLLING STOCK

ZUO SHIBIN (CN)
LUO HANJIANG (CN)
YIN MAIYUN (CN)
ZHANG XIANFENG (CN)
ZHU JI (CN)
ZHANG RUI (CN)
WU CHANG (CN)
DENG TAO (CN)
WANG YUNGUI (CN)
LI JIALE (CN)
LI SONG (CN)
LI ZHIQIANG (CN)
HAN JINGANG (CN)

PCT/CN2018/115546

April 16, 2020

November 15, 2018

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CRRC MEISHAN CO LTD (CN)

B61F5/04

CN107244332A	2017-10-13
CN102556098A	2012-07-11
CN102514584A	2012-06-27
CN203332129U	2013-12-11
US7571684B2	2009-08-11

CHENGDU FUJUN PATENT AGENT LTD. (CN)

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