Crrc Yangtze Corporation Limited

Crrc Yangtze Co., Ltd.

Hong Cui

Fengwei Liu

Wenliang Liu

Ruijin Jiang

Tiejun Fu

Zhaojun Dan

Zhixiong Yan

Liangwei Zhang

Chuqiang Tang

Liangcai Lin

Qi Wei

Yueming Hu

Song Wang

Biaowen Xiang

Chuanping Zheng

Pingping Wang

Xuebin Zhu

Rui Yan

Disclosed is a railway hopper car comprising a car body (), a top cover (), a bogie (), a braking device (), a coupler buffer device (), and a bottom door () and a bottom door opening and closing mechanism () mounted at a discharge port at the bottom of a chassis. The railway hopper car further comprises a longitudinal saddle () disposed in the center of the car body () in the length direction thereof and arranged along the longitudinal direction of the car body (). By providing the longitudinal saddle (), the sequential requirement to close the left bottom door () and the right bottom door () is eliminated, thereby simplifying the structure of the linkage bottom door opening and closing mechanism and reducing manufacture and maintenance costs thereof.

Railroad hopper car

The present invention provides a two-stage stiffness type elastomer combined device, including at least one small-stiffness elastic element and a large-stiffness elastic element, wherein the small-stiffness elastic element is arranged in an elastomer pre-compression device and is serially arranged with the large-stiffness elastic element under the action of a pre-compression load F1. The device has combined stiffness being hard at first and then becoming soft and is used as an elastic axle box suspension device of a railway vehicle, effectively solving the contradiction that a linear snaking critical operation speed of the vehicle and curve passing performance of the vehicle cannot be compromised. The device can also be applied to a variety of occasions requiring combined stiffness being soft at first and then becoming hard of an elastomer damping device between related members of the railway vehicle, so as to buffer the wheel rail impact of the vehicle, improve the dynamic performance of the vehicle and guarantee the operation safety of the vehicle to perfect the operation quality of the railway vehicle.

Two-stage stiffness type elastomer combined device

The present invention provides a variable stiffness positioning device for a railway vehicle bogie axle box. The variable stiffness positioning device includes a vertical elastomer arranged between the top face of an axle box bearing saddle and the bottom surface of a guide frame of a side fame, and a longitudinal elastomer arranged between the axle box bearing saddle and the front and back side faces of the guide frame of the side fame, the longitudinal elastomer is provided with at least one small-stiffness elastic element and a large-stiffness elastic element, and the small-stiffness elastic element is arranged in an elastomer pre-compression device and is serially arranged with the large-stiffness elastic element under the action of a pre-compression load F1. The longitudinal elastomer has a larger longitudinal compression stiffness when the longitudinal deformation displacement is very small, so that the railway vehicle can be guaranteed to have a higher snaking critical operation speed when operating on a straight line, and the acceleration operation demand of the vehicle is satisfied; when the longitudinal deformation displacement reaches a set numerical value, the longitudinal compression stiffness of the longitudinal elastomer starts to become small, so that when the railway vehicle passes by a curve, it can be guaranteed that the lateral force between wheel rails will not be too large, and thus the curve operation safety of the vehicle is guaranteed.

Variable stiffness positioning device for railway vehicle bogie axle box

Growing community of inventors

Wuhan, China

Hong Cui