More and more people can drive
The throttle and brakes are stepped on
That's called a belt
Friends will not be curious
How do you brake when you drive a train?
In case of emergency
What should I do if I need to park?
Do trains also have handbrakes like cars?
Let's take a closer look today
1
What's different about train brakes?
We usually talk about "brakes"
Called "braking" in traffic jargon
The biggest difference between the braking of trains and cars
Is all the carriages needed
Synchronized braking with the locomotive
to counteract the huge inertia of the train
The braking force of the train is mainly generated by pushing a set of braking devices through compressed air (there is also a resistance brake as an auxiliary braking force), and the railway people are accustomed to referring to the pressure air as "wind", and the pressure value of the air is called "wind pressure".
Diesel locomotive
Electric locomotives
In order to allow each carriage to generate braking power at the same time, both the locomotive and the carriage are equipped with brakes and connected in series by a rubber hose called the "train tube".
When braking, the driver controls the brake handle, changes the air pressure in the train tube, and the braking devices of the locomotive and the carriage act at the same time, so that the entire train produces a braking effect.
2
What does the braking device of a general speed train look like?
One is brake pad braking
Brake the wheels tightly through the brake pads
(similar to a bicycle)
Commonly used in diesel locomotives and freight cars
Brake pads are shingle brake blocks made of cast iron or other materials that hold the wheel tread tightly when braking and stop the wheel from turning by friction. During braking, the brake pads convert huge kinetic energy into heat energy and dissipate it into the air. The higher the speed, the greater the heat load on the wheels when braking, so the brake pad brake is not suitable for high-speed trains.
The other type is disc brakes
Hold the brake disc through the brake pads and brake
(similar to cars)
It is commonly used in electric locomotives and passenger cars
Disc brakes are brake discs that are mounted on the axle or on the side of the wheel spokes, and the frictional brakes generated by the brake pads are pressed tightly on the sides of the brake discs. Disc brake greatly reduces the heat load and mechanical wear of the wheel tread, the brake is smooth, there is almost no noise, suitable for high-speed trains with a speed of more than 120 kilometers per hour, and it is a braking method commonly used in railway trains in various countries.
3
What does the driver need to do when the train brakes?
When the train driver is operating the locomotive
To use common braking
Commonly used braking is the braking method used by the driver when the train arrives at the station, which usually needs to be coordinated with the adjustment and control of the speed of the locomotive, which is characterized by relatively gentle and can ensure the comfort of passengers.
4
What safety insurance is also available on train brakes?
The brake device of the train is reasonable in structure, mature in technology, simple in operation, easy to connect, strong in expansion capacity, in line with the idea of "safety first", the railway staff will also test and inspect the brake device before each train departure.
The driver conducts a brake performance test before the locomotive leaves the depot and after the trailer.
In order to avoid the blockage of the train tube in one of the trains, the vehicle inspector will check the connection of the train tube and the open state of the scrater door one by one before driving. The train driver can also judge whether the train tube is through in real time according to the wind pressure data of the rear car of the train according to the monitoring equipment of the rear device on the train.
In order to avoid the moisture in the compressed air in the train braking system from freezing in the cold and blocking the train air pipeline, a wind source purifier will be installed for the locomotive to filter and adsorb impurities and moisture in the air to ensure that the air in the train storage cylinder and pipeline is dry and clean. Railway employees will also wear "small cotton coats" for locomotive equipment, protect the brake system pipeline exposed to the outside, and regularly drain the locomotive braking system to ensure that the brake pipeline will not freeze and make the locomotive run safer.
Friends
This time I see!
Material: Mudanjiang Locomotive Depot Rong Media Studio
Production: Snow White
EDIT: Snow White
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