INSULATING FISH PLATES OF COMPOSITE MATERIAL FOR R65 RAILS
Insulating FRP rail joint fish plates NS-1 are used for insulated joints of trunk railroads.
These plates have several advantages over traditional ones in conditions of polluted atmosphere and they are more resistant to mechanical damage.
Main technical parameters and requirements to fish plates:
|
Properties |
Norm |
Physical and mechanical properties at temperature 20 ± 2°C: a) force that excludes destruction of fish plate in assembled rail joint under static load and deflection not exceeding 6 mm kN (t): b) fish plate in assembled rail joint should withstand cyclic loading in the range of 117.7 ... 235.4 kN with a frequency of 9 ... 11 Hz in quantity of: |
not less than 441.4 (45)
not less than 2 mln |
|
Electric resistance between tops of rails in assembled joint, kOhm |
not less than 1.0 |
Water absorption of material within 24 hours, mass% |
not more than 1.0 |
Oil absorption in "axle grease" (grade "L"/GOST 610/) within 24 hours, mass % |
not more than 0.8 |
|
Loss of physical, mechanical and electrical properties of fish plates in process of aging when exposed by climatic factors environment, % |
not more than 20 |
Reliability data of fish plates
|
Properties |
Norm |
|
Resource uninterrupted operation in joint, mln tons of gross weight skipped over |
not less than 200 |
|
Wear-life, years |
not less than 5 |