About steel rail tracks

 About steel rail tracks

1. The concept of steel rail tracks

– Lines for train operation consisting of steel rails, Sleepers, ballast beds, switches, connecting parts, etc.

2. Track system component

– Steel rails, Sleepers, ballast beds, Turnouts, connecting parts, etc.

3. Steel Rail

3.1 The function of Steel rail

-a. Support guide wheels

-b. Provides less resistance to wheel rolling

-c. Linking up and down, transmitting force to sleepers

-e. As a conductor–track circuit

3.2 Shape and reason for Steel rail

Steel Rail section: I-shaped

Reasons: ① The best section form to prevent bending

deformation.

② Reduce self-weight and material consumption

3.3. Types and standard lengths of steel rails

– For the convenience of production, transportation, and laying, standard lengths of steel rails are specified. Ordinary steel rails are divided into 25m and 12.5m, and seamless Steel rails are currently 50m in standard length.

3.4. Steel Rail connections and rail joints

– Ordinary slotted steel rails are connected by bolts, backing plates, gussets, etc., to ensure the continuous and stable operation of the train.

3.5. Seamless steel rails

◆(1) Meaning

– After the steel rails are welded to form super-long Steel rails with a length of 500m or even several kilometers, they are called seamless Steel rails, and there are actually gaps.

◆(2) Advantages

-a, noise reduction. Reduced noise pollution

-b, saving. The impact force of the joint is eliminated, the damage to the line is reduced, and line maintenance can save 30%-75% of the cost.

– c, suitable for high speed. Improved track reliability.

– d. Stable and comfortable.

4. Sleepers

– Track components that support and fix the steel rails.

• Function

-a. Fixed steel rails

-b. Withstand the horizontal and vertical force of the steel rail tracks

-c. Transfer load

5. Function and classification of coupling fasteners

• Function

①Connecting steel rails and steel rails and rails and sleepers to maintain the continuity and integrity of  steel rails;

②Prevent steel rails from moving to ensure that the gauge is normal:

③ Absorb vibration and slow down the accumulation of residual deformation of the line.

(2) Type

• ①Joint connection fasteners–Steel rail tracks connection
• ②Intermediate connection fasteners–Steel rail and sleeper connection.