Why do trains run along railroad tracks, and can bullet trains run on ordinary rails?

The two rails of the railway are fixed, and the inner side of the wheels of the train has a flange, and the distance of the flange is just the standard gauge, so the wheels of the train are like being embedded in the middle of the rails and will not derail.

It is because the wheels in the wheelset have a tread, and there is a certain inclination of the tread, through which the train is guaranteed not to derail. And the rim is just an insurance!

The gauge of the rails is fixed, and the standard gauge is adopted in our country.

The gauge is the distance between the two rails of a railway track (based on the inner distance of the rail). In 1937, the International Association of Railways established 1435mm as the standard gauge (equivalent to 4 feet 8 inches in the imperial system), and about 60% of the world's railways have standard gauge. This gauge is also known as the standard gauge or the international gauge.

Gauges that are wider than the standard gauge are called broad gauges, and those that are narrower than the standard gauges are called narrow gauges. Double-gauge or multi-gauge railways have three or four rails that allow trains of different gauges to travel.

The train has a flange on the inside of the wheel, and the flange distance is just the standard gauge, so the wheels of the train are like they are embedded in the middle of the track and will not derail.

When the track is uneven, or the gauge is broken, it is very easy to derail, and the curve of the track is also very important, how much bend, how big the turning radius, how much slope, strictly corresponds to the corresponding speed, which is why the train runs fast in the plain area and the slow train in the mountainous area.

The bullet train generally cannot run on ordinary rails, mainly because of the difference between ballasted tracks and ballastless tracks, but now there are exceptions, and the upcoming Beijing-Zhangjiakou intercity railway will become the world's first high-speed railway with a design speed of 350 kilometers per hour.

Ordinary railways use ballasted tracks, while bullet trains and high-speed railways use ballastless tracks.

砟 (zhǎ), fragments of rocks, coal, etc. On railroads, it refers to small stones used as roadbeds.

Ballasted track: refers to the use of gravel as the track bed on the roadbed and the use of cement sleepers, gravel is the stone, its requirements are uniform structure, hard, weathering, good impact toughness, elasticity. The traditional ballasted track has the characteristics of simple laying and low comprehensive cost, but it is easy to deform, frequent maintenance, and the later maintenance cost is large.

Ballastless track refers to the track structure that replaces the loose gravel track bed with the overall foundation of concrete and asphalt mixture, also known as ballastless track, which is the most advanced track technology in the world today.

Compared with the ballasted track, the ballastless track avoids the splash ballast, has good smoothness, good stability, long service life, good durability, less maintenance work, and the train can run at a speed of more than 350km per hour.

1. The rails of ordinary railways.

There is an interface dozens of meters away, and the train is always inseparable from the sound of "clang". When the wheels roll over the rail connection, the wheels vibrate, the carriage vibrates, and the ground also vibrates, and the train is not stable at all, just like a ship on the sea surface with strong winds and waves.

2., rails for high-speed rail.

Let's look at the high-speed rail, when building the road, according to the season, in the thermal expansion and contraction of the rail, when the longest extension, the rails are welded together, so that the rails will not stretch longer, and when it comes to the cold contraction in winter, it will remain undeformed by virtue of the tensile strength of the steel itself.

In this way, the countless interfaces on the steel rails are eliminated, the wheels roll smoothly, the train runs farewell to the vibration of "clang, clang, clang", and the train moves smoothly, just like on a calm sea, and the ship can move forward at full speed.

Trains are going to run on smooth tracks for less effort. More than 100 years ago, after the invention of the steam engine, there were tracks made of steel, and the resistance of the wheels of the train was greatly reduced.

The opening of the Stockton-Darlington Railway marked the beginning of the modern rail industry. Railways are highly valued by people for their speed, convenience and economy. In England, where it originated, railway construction became the hottest and most fashionable thing.

Due to the progress of science and technology to achieve mechanization and precision maintenance, now the general railway every few years of maintenance directly paved the new ballast on the old ballast tamping, no longer as in the past to screen ballast, digging the bed, etc., so that the general railway base is more and more wide and thick, coupled with the improvement of the track and the car body, now the good conditions of the general railway are soaring to more than 180 kilometers per hour.

Summary. Dear, I'm glad to answer this question for you The reason why the train runs on the tracks is because the train usually pulls some passengers and heavier goods, etc., and the body and wheels of the train are made of steel, resulting in each carriage being very heavy. If the train runs directly on the road, then it will inevitably lead to the situation where the road will be crushed.

This problem can be avoided by using some tracks, which can reduce the pressure on the ground a lot. Another reason is that laying rails can reduce the friction between the train and the ground, because the fast movement of the train can form a relatively weak friction on the smooth track, which is conducive to increasing the speed of the train.

Dear, I'm glad to answer this question for you The train is closed to the tracks, which is funny, because the train usually pulls some passengers and heavier goods, etc., and the body and wheels of the train are made of steel, so each carriage is very heavy. If the train runs directly on the road, then it will inevitably lead to the situation where the road will be crushed. This problem can be avoided by using some tracks, which can reduce the pressure on the ground a lot.

One of the reasons for the car's finger state is that laying the rails can reduce the friction between the train and the ground, because the fast movement of the train can form a relatively weak friction on the smooth track, which is conducive to increasing the speed.

Train, also known as railway train, refers to a vehicle running on a railway track, usually composed of multiple carriages, and is one of the important means of modern transportation for human beings. As of 2021, Pirang has two types of domestic trains: Pirang speed cars and EMUs.

The most important machine in human history, called the steam locomotive in the early days, had an independent track to travel. Railway trains can be divided into freight wagons and passenger cars according to the load, and there are also mixed passenger and freight trucks together, but they will produce a large amount of carbon dioxide and pollute the environment.

The first reason is that the train is too heavy and the wheels are too narrow, and driving on the highway will sink in. The second reason is that the train does not have a steering wheel, so there is no way to turn on the road.