Precautions for Seamless Line Operations

1. seamless line maintenance how to prevent expansion of the track runway?

 

A: We should always pay attention to the state of the line and the traffic situation. If you find that the line direction is not good, broken bend increase, dial the road to dial or near the drum out, the height is not good, continuous empty hanging board, one end of the pillow ballast away from the seam and other signs of expansion of the track, should immediately stop work, set up protection, take the necessary cooling measures to prevent expansion of the track runway.

 

2. What else should be done after the maintenance work?

 

A: A comprehensive back check is necessary. Stay on guard and pay attention to the changes especially in hot weather.

 

3. Which sections of the seamless line must be properly adjusted?

 

A:(1) Locking rail temperature is too high or too low and does not meet the specified requirements;

(2) Improper operation, resulting in abnormal excessive expansion of long rails, changing the original locking rail temperature;

(3) Serious uneven crawling in the fixed area of the line, or large changes in summer direction and more broken bends;

(4) The line fault treatment has changed the original locking rail temperature;

(5) due to other reasons to change the original locking rail temperature.

 

4. Which parts of the high strength bolts should be tightened?

 

A: Limiters joint bolts, wing track spacer iron joint bolts and turnout half welding side stock end of the high-strength joint bolts.

 

5. Why should seamless lines be inspected?

 

A: Seamless lines are characterised by the huge temperature forces they are subjected to, so the necessary inspections should be carried out on the condition of the track under the effect of temperature forces, so that abnormalities in the seamless lines across the zone can be detected in time and necessary maintenance measures can be taken to remedy the situation and avoid hidden dangers.

 

6. In addition to the relevant provisions of ordinary lines, what other work should be done in the patrol of seamless lines?

 

A: (1) Be familiar with the seamless line lock rail temperature, pay attention to the observation of rail changes in hot weather and check the state of the rail and weld seam in winter to prevent expansion of the rail;

(2) Refurbish anti-climbing equipment to maintain in a good state.

(3) Tighten the slack fasteners and hit the floating nails, buffer zone joint bolts should always keep in a tight state.