A track gauge , or track gauge car , is a mobile unit ( car or auto track ) designed for continuous high-speed monitoring of the state of the rail track under dynamic load. There are two methods of measurement: contact (using rollers, measuring trolleys or taking measurements from running trolleys) and non-contact ( laser range finders ). [one]
Content
History
The first track gauge with mechanical recording of defects on a paper tape was created in 1887 by a Russian engineer I.N. Livchak . On domestic railways, track meters have been used since 1916.
Controlled Parameters
The list of monitored parameters is different in different countries, but the template ( gauge ) and level (elevation of one rail over another) are always included in it. In Russia, according to the current CP-515 instruction (since 1997), straightening (bending arrows of each rail thread) and subsidence (differences in rail height in the longitudinal plane) are also controlled, while in most European countries, their difference is controlled instead of individual subsidence.
Self-propelled track gauges based on auto-tracks belong to a special self-propelled rolling stock (JCSS).
Development Prospects
Improving track meters involves increasing their operating speeds, increasing the accuracy of measuring parameters and increasing the number of parameters obtained, equipping track cars with automated processing, storage and transmission of information received. In the future, according to the "Concept for the development of diagnostic systems and monitoring of track facilities for the period up to 2025" on the railway network, track gauges will be replaced by trains equipped with an autonomous diagnostic system
See also
- Flaw detector car
- Travel trolley
Notes
- β Rail Transport: Encyclopedia / Ch. ed. N. S. Konarev. - M .: Big Russian Encyclopedia, 1994 .-- 559 p. - ISBN 5-85270-115-7 .
Literature
- Rail transport: Encyclopedia / Ch. ed. N. S. Konarev . - M .: Big Russian Encyclopedia , 1994 .-- 559 p. - ISBN 5-85270-115-7 .