Crrc Qingdao Sifang Co., Ltd.

Goertek Inc.

Yangyang Yu

Aiqin Tian

Sansan Ding

Shizhong Zhao

Quanwei Che

Honglei Tian

Haiyang Yu

Yonggui Zhang

Yuwen Liu

Guidong Tao

Shiyu Li

Wenbin Chen

Guanglei Ma

A method and device for testing product quality are disclosed. The method for testing product quality comprises: acquiring an image of a product to be tested; testing the image by using a pre-trained neural network model to obtain a testing result output by the neural network model; when the testing result indicates that the product to be tested is a defective product, performing a secondary judgment on the testing result according to position information of defective feature pixels in the image in the testing result, and determining whether the product to be tested is qualified according to a secondary judgment result. The method has high test accuracy, ensures the quality of product and facilitates reducing the labor cost of test.

Method and device for testing product quality

Provided are a collision energy absorption structure and a rail vehicle having the same. The collision energy absorption structure includes: a primary energy absorption structure, connected to a chassis boundary beam of a vehicle, the primary energy absorption structure having at least two spaced energy absorption cavities; an end energy absorption structure, the lower end of the end energy absorption structure being connected to the primary energy absorption structure; and a roof structure, the upper end of the end energy absorption structure being connected to the roof structure. The technical solution provided by the present invention can meet requirements of more complex road conditions.

Collision energy absorption structure and rail vehicle having same

A coupler assembly, arranged at a front end of a vehicle head of a rail vehicle, includes: a coupler mounting base fixed to the vehicle head; a coupler fixedly mounted to the coupler mounting base, and a supporting component provided at each of two sides of the coupler mounting base. The supporting component has a guiding slide way inclined longitudinally, a front end of the guiding slide way is higher than a rear end of the guiding slide way; a sliding component is fixedly provided at each of the two sides of the coupler mounting base, and the sliding component slidably cooperates with the guiding slide way at a respective side; and the coupler assembly is configured such that in an initial state, the coupler mounting base is fixedly connected to the supporting component, and the sliding component is located at a front end of the guiding slide way.

Coupling assembly and rail vehicle having same

A railway vehicle and a head car cowcatcher thereof are provided. The head car cowcatcher includes a flow guiding plate; a front-end frame mounted at a front end of an inner side surface of the flow guiding plate; and longitudinal sills mounted at two sides of the inner side surface of the flow guiding plate. Two ends of the front-end frame are respectively connected to the longitudinal sills located at the two sides. The rigidity of a connecting part of the longitudinal sills and the front-end frame is smaller than the rigidities of any parts of the longitudinal sills and the front-end frame. When obstructions are cleared or a train collision occurs, the connecting part of the front-end frame and each of the longitudinal sills would be largely deformed if the impact force the cowcatcher bears is beyond the maximum load the cowcatcher can bear.

Railway vehicle and head vehicle barrier-removing device thereof

Growing community of inventors

Shandong, China

Yangyang Yu