Animesh Kumar Sinha, the Chief Mechanical Engineer working in the Railways, says that there were many changes in the LHV coach. Now there is no need to do anything from outside the coach.
In the event of an emergency, the facility of pulling the chain is given in the bogie to stop the train, that is, to stop the moving train. Using it without any emergency is a crime by law and for this there is a provision of punishment and fine under the sections of the Railway Act. It is advised by the Railways not to do emergency chain pulling, but often some people do not follow it. (PS:RailMitra)
Despite not having stoppage of the train, some people do chain pulling before their station and want to get down and run away. Railway police remain alert for these situations and catch the chain puller as soon as the train stops unnecessarily. Now the question is, how does the police know in which bogie the chain has been pulled? (PS:RailMitra)
First of all, know how the train stops when the chain is pulled, that is, how does the brake apply? Actually, the brakes of the train are often applied. When the train is to be driven, the brake is removed and the train moves forward. When chain pulling is done, the air pressure is released from the brake pipe through the check given in the valve and brake is applied in the train. Then the driver stops the train and investigates its reasons. (File Photo)
Animesh Kumar Sinha, Chief Mechanical Engineer working in Railways has answered this on quora. They say that there are three types of coaches i.e. coaches of the train. Vacuum brake compartment, ICF design airbrake compartment and LHV design airbrake compartment. Let’s talk about the vacuum brake compartment first. In this, on pulling the chain, a valve rotates in one corner above the box. The driver, assistant, guard or railway police, seeing this rotating valve, understand that the chain has been pulled in this bogie. (PS: AK Sinha)
The same system is also used in the ICF design airbrake compartment. The only change was that the rod or wire rope was hung from the top valve so that it could be reset by pulling it from below without climbing on the box. There were many changes in the LHV coach. Now there is no need to do anything from outside the coach. If the chain is pulled from any box, the chart cum passenger alarm chain light, which is on either side of the box, gets lit. With this, the guard or the railway police know that the chain has been pulled from this box. (PS: AK Sinha)