Introduction

Introducing the topic: Introducing the phenomenon of train wheels slipping

Importance: Study of the causes of train wheels slipping, its impact on railway transport and measures to counteract it.

Reasons for train wheel slipping

1.Environmental factors

• Rainy or snowy weather：

On rainy days, rainwater accumulated on the ground may enter the track, making the track surface wet. When the train passes through these slippery tracks, the adhesion between the train wheels and the tracks will be affected, and the wheels may slip. Especially when driving at high speeds, the slip will be more obvious because the adhesion between the wheels and the slippery tracks is weakened.

• Dust, dirt, etc. on wheels

As the train travels, the wheels come into contact with the ground and come into contact with many contaminants such as dust, oil and dirt. Over time, this dirt may accumulate on the surface of the wheels and form a smooth layer that prevents ideal contact between the wheels and the track. When train wheels are travelling on a track where a lot of dirt has accumulated, adhesion will be compromised and the wheels may slip as a result.

2.Technical factors

• Wheel and track material

In order to increase the wear resistance of the track, low coefficient of friction materials are selected, such as tungsten steel, chrome-plated steel, etc., sacrificing friction to some extent.

• Wear and tear of the track

Where the internal structure of the track is damaged or the surface is compromised, the tyres of the train will not be able to make full contact with the track, which reduces friction and causes the train to skid. In addition, deformation or bending of the track can also lead to skidding while the train is in motion, as the point at which the wheels come into contact with the track becomes unstable.

Effects of train wheel slip

1.Safety Hazards

• Reduced braking performance:increases the risk of train accidents.

• Difficulty in operation: affects the driver's control of the train.

2.Wear and tear of equipment

• Increased wear on wheels and rails: shortens the service life of wheels and rails.

• Increased maintenance costs: requires frequent repairs and replacement of components.

3.Energy efficiency

• Increased energy consumption: inefficient energy conversion during skidding.

Strategies for dealing with train wheel slip

1.Use of train blasting conduits

• One of the main effects of sandblasting catheters for trains is to increase the friction between the wheels and the rails, thus improving the traction and braking power of the train. For example, if the railway track is waterlogged or snowlogged, the friction between the wheels and the railway track is reduced, making the train easy to slip. The sandblasting catheter can form an adhesion layer between the wheels and the rails by spraying sand particles, increasing the contact area between the two, thus increasing the friction and improving the traction performance of the train.

• By spraying sand particles, the sand blasting conduit can effectively remove the dirt on the surface of the wheels, keep the wheels clean and smooth, reduce energy consumption, and improve the operating efficiency of the train.

2.Manoeuvre Improvement

• Smooth operation: Avoid rapid acceleration and hard braking.

• Driver training: Enhance driver training to improve skills in dealing with skidding.

3.Track Maintenance

• Regular cleaning: Remove oil, leaves and other foreign objects from the track.

• Timely inspection: Regularly check the condition of the track and wheels, and repair them in time.