Emergency braking extension device for urban rail vehicle

US11845414B2 · kind B2 · utility

Assignee

• CRRC Nanjing Puzhen Co., Ltd. · CN

Inventors

• Chaofeng DING · Nanjing, CN
• Fengli Zhang · 梅厂镇, CN
• Rujun Liang · Nanjing, CN
• Chunmeng Wang · Beijing, CN
• Xiaofang Shi · Nanjing, CN
• Aiping Zhang · Qingdao, CN
• Lian Ge · Nanjing, CN
• Hemin Ding · Nanjing, CN

Key dates

• Filing date: Dec 5, 2019
• Grant date: Dec 19, 2023
• Expiry date: Nov 19, 2041

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60L2200/26
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An emergency braking extension device includes an emergency braking extension loop, a first emergency braking extension train line and a second emergency braking extension train line. The emergency braking extension loop has a protective circuit breaker, a normally open contact of an emergency braking button, and an emergency braking extension relay, which are sequentially connected in series. A normally open contact of the emergency braking extension relay is connected in series to a pantograph lowering control loop. A first normally closed contact and a second normally closed contact of the emergency braking extension relay are connected in series to a return line and a power supply negative loop of a train emergency braking control loop, respectively. A third normally closed contact of the emergency braking extension relay is connected in series to a control loop of a bypass cut-off circuit of a train emergency braking execution loop.