News from the financial sector on December 27, 2024, information from the State Intellectual Property Office shows that CRRC Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. The company obtained a patent titled \”Pneumatic Door Control System and Rail Vehicles\”, with the authorization announcement number CN 222207598 U, and the application date is April 2024. The patent abstract shows that the utility model relates to the field of door structures and provides a pneumatic door control system and a rail vehicle. The pneumatic door control system includes: a door control circuit for controlling the state switching of the door; the air supply circuit includes a first air supply Branch Road, No. The second gas supply branch and the first two-way check valve, one end of the first gas supply branch and the second gas supply branch are connected to the air source, and the other ends of the first gas supply branch and the second gas supply branch Both are connected to the first two-way check valve, and the first two-way check valve is connected to the door control circuit. In order to solve the problem in the prior art that the pneumatic door is accidentally opened when the air source is disconnected, the pneumatic door control system provided by the utility model connects the door control circuit to the air source through the air supply circuit, and the air supply circuit passes through the first two-way stop. The return valve is provided with a first air supply branch and a second air supply branch. When one of the first air supply branch and the second air supply branch leaks or is disconnected, the first two-way check valve controls the first air supply branch and the second air supply branch. After sealing, the other one can supply air normally, improving the safety of the door.
This article comes from the financial world
本站内容及图片来自网络,版权归原作者所有,内容仅供读者参考,不承担相关法律责任,如有侵犯请联系我们：609448834
