What is the function of the screen door system?

At around 4:30 pm on January 22, staff rushed forward to try to help him get out of trouble. After being sent to the hospital for emergency treatment, the passenger unfortunately died. After this incident occurred, it attracted the attention of many passengers in Nanjing. Everyone was curious whether the Nanjing subway screen door has an anti-pinch function? How can we avoid similar accidents when traveling in daily life? On the afternoon of January 25, reporters interviewed the Nanjing Metro Operating Company on these issues. The company said that screen doors are installed on all Nanjing Metro lines. The screen doors are equipped with anti-pinch functions and will automatically pop open when encountering obstacles when closing the door.

The reporter visited Metro Line 2, Line 10, and Line 1 and found that screen doors were installed on Nanjing Metro platforms, the underground platforms were fully enclosed screen doors, and some elevated platforms used semi-enclosed screens. Door. After the subway train enters the station, the train doors and screen doors will open simultaneously. After all passengers have entered the carriage, a warning light will flash above the screen door accompanied by a "didi" alarm sound, and then the train door and screen door will slowly close. It was not until all train doors and screen doors were closed that the train started and headed to the next station. Warning slogans such as "Beware of gaps," "Beware of pinched hands," "Do not get in or out of the vehicle when the door light is flashing," "Do not get in or out of the vehicle when the indicator light is flashing," are posted in prominent locations on the doors or screen doors to remind passengers getting on and off the vehicle.

The screen doors are covered with warning slogans

The train doors also have anti-pinch tips

According to the relevant person in charge of the Nanjing Metro Operation Company, Nanjing Metro, except for Line 1, The screen door is installed later, and the other lines were installed simultaneously with screen doors during construction. Screen doors are installed to ensure passenger safety, not only to prevent passengers from accidentally falling into the track area, but also to prevent passengers from forcibly breaking into the track area. At the same time, the underground platform can be fully enclosed, which has an energy-saving effect.

"All Nanjing Metro screen doors are equipped with anti-pinch functions. If passengers are about to be caught by the sliding door on the screen door, please do not panic, the sliding door will automatically pop open." The person in charge said that subway trains stop for a short time, and sometimes this happens. The sliding door on the screen door has begun to close, but there are still passengers rushing onto the train regardless of the situation. Even if a passenger rushes into the middle of the closing screen door, he will not be injured because the screen door has an anti-pinch function. In this case, the screen door will automatically pop open to both sides and close again after a few seconds.

Currently, Nanjing Metro technology can enable the train doors and screen doors to open and close simultaneously, and both have anti-pinch functions. That is to say, when the screen doors automatically pop open when encountering obstacles, the train doors will also It will pop up accordingly and wait a few seconds before closing simultaneously. On the contrary, if the train door encounters obstacles, it will also affect the closing of the screen door. Under normal circumstances, the train will not start running until all train doors and screen doors are safely closed. However, it does not rule out that the screen door fails and cannot be completely closed. In such a situation, the train will not run for the time being. Relevant personnel will investigate the cause as soon as possible to ensure the safety of the train and passengers, arrange for the train to go first in an orderly manner, and then urgently arrange for professionals to repair the screen door. If the train doors and screen doors cannot be closed and the safety of the train or passengers is affected, Nanjing Metro usually clears the passengers and then resumes operations after troubleshooting.

“Although train doors and screen doors have anti-pinch functions, you must not rush in and out because you are in a hurry during the morning and evening peak hours. This will lead to waste in haste.” The person in charge said that during the morning and evening peak hours, , there are more passengers, and accordingly, the frequency of train departures is also higher, so there is no need to force people to get on the train. If passengers rush in and out, the train doors and screen doors will sense the obstruction and bounce open repeatedly. As long as one door is not fully closed, the train will not start and will remain on the platform, which will increase everyone's travel time. If one train is delayed, subsequent trains will also be affected, and it may also endanger the safety of subway operations. Therefore, passengers must not get on or off the subway car after the door light or screen door indicator light flashes. Passengers who have already boarded the train should also take care of their belongings and children who are traveling with them at any time, and ensure that their belongings and children are kept away from the doors to prevent the doors from closing properly and causing train delays.

Yangzi Evening News/Ziniu News reporter Cao Lujie

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