ZXSTEELGROUP
Railway Steel Rail Protect the roadbed
Rail rails are laid on the gravel above, inevitably someone asked why laying on the gravel rather than directly on the ground. Today, the railroad track of the small series for everyone to answer why the railway rail laying on the gravel, together look at:
1. The load of locomotive vehicles through the railway rails, sleeper and through the spread of bed bed spread on the road surface, plays a role in protecting the roadbed.
2. Provide resistance to the longitudinal and lateral resistance of the rail, to maintain the correct geometric shape of the track, which is particularly important for seamless lines.
3. Daily for row of rain, when the train passes, reduce the role of vibration, reduce the role of dust.
4. to provide a certain degree of flexibility and damping, play the role of cushioning and shock absorption.
5. The irregular arrangement of gravel, the pressure of the track can be decomposed in different directions. Is the track more stable, no deformation.
6. Crushed stone can absorb noise and heat absorption. Shredded gravel, the shape is very irregular, so easy to break the stone, this way, you can because of the fragmentation of the stone and absorb the heat generated by the train through the heat, smooth stone endothermic effect is not good.
The soil is flattened, and the train is bumpy, and the stone can be flattened, and the train is safe and smooth. Even in the winter will not be because of the expansion of water and the rail will be lifted, and to prevent the interference of weeds, to ensure smooth running the train. There is a railroad rail in the railroad rail, we may not understand, that is seamless rail rail. Then the railroad rail to introduce you to the seamless railway rail. Seamless railroad rails are 25 meters long rail rail welded together into a few hundred meters long or even a few thousand meters long, and then spread on the roadbed. Seamless rail rails have 11 mm gap between each section.
Simple to tell you about this seamless rail rail laying method:
(1) laying the rail, the use of tractors holding two 500 meters long railway rails slide to the appropriate location, dozens of engineering and technical personnel to assist the tractor to remove the rail rail and accurate positioning.
(2) after the laying of the railway rail, the locomotive can be pushed along the railway rails by 37 sections of flatbed car plate unit.
(3) traction machine rail rail laying on the ballastless track, another seamless rail rail welding construction team will immediately lay the front rail rail, welded into a gap without the rail rail.
(4) Seamless rail rail welding in the stress relief process to prevent seamless rail rail thermal expansion and contraction, that is, the rail rail internal stress evenly distributed to the railway rail, to prevent the temperature is too low when the broken, the temperature is too high When the expansion of the rail.
