US 11,718,182 B2
Railway vehicle with aerodynamic lift control device
Sansan Ding, Shandong (CN); Shuanbao Yao, Shandong (CN); Dawei Chen, Shandong (CN); Shaoqing Liu, Shandong (CN); and Fujie Jiang, Shandong (CN)
Assigned to CRRC QINGDAO SIFANG CO., LTD., Shandong (CN)
Appl. No. 17/788,763
Filed by CRRC QINGDAO SIFANG CO., LTD., Shandong (CN)
PCT Filed May 18, 2020, PCT No. PCT/CN2020/090779
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/135042, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 202010001729.6 (CN), filed on Jan. 2, 2020.
Prior Publication US 2023/0031854 A1, Feb. 2, 2023
Int. Cl. B60L 13/06 (2006.01); B61B 13/08 (2006.01)
CPC B60L 13/06 (2013.01) [B61B 13/08 (2013.01); B60L 2200/26 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A railway vehicle with an aerodynamic lift control device, comprising a vehicle body and a travelling mechanism arranged at a bottom of the vehicle body, wherein an equipment compartment is formed between a vehicle body bottom floor at the bottom of the vehicle body and a passenger room floor, and the aerodynamic lift control device is provided in the equipment compartment; the aerodynamic lift control device comprises an aerodynamic lift regulation air blower and aerodynamic lift regulation air ducts, aerodynamic lift regulation air ports are provided in the vehicle body bottom floor within an aerodynamic lift control range; one end of each aerodynamic lift regulation air duct is in communication with the corresponding aerodynamic lift regulation air port, the other end of each aerodynamic lift regulation air duct is in communication with the aerodynamic lift regulation air blower;
wherein the aerodynamic lift control device is configured such that:
a positive pressure airflow is blown from the aerodynamic lift regulation air ports to a gap between the bottom of the vehicle body and a rail surface through the aerodynamic lift regulation air ducts when the aerodynamic lift regulation air blower is in a positive pressure working state,
a negative pressure airflow is sucked from the gap between the bottom of the vehicle body and the rail surface through the aerodynamic lift regulation air ducts and the aerodynamic lift regulation air ports when the aerodynamic lift regulation air blower is in a negative pressure working state, and
a pressure distribution at the bottom of the railway vehicle is changed by blowing the positive pressure airflow or sucking the negative pressure airflow.