The method of determining the state of the rail-sleeper grid operated welded railway track

 

(57) Abstract:

Use: for the control status of the railway track potenzmitteln means. The inventive method is that potenzmitteln means continuously measure the curvature of the rail lashes in a horizontal plane. While periodically measure the temperature of the lashes using a contactless temperature sensors. Then the expression where F is the cross-sectional area of the rail scourge; n - number of sections rail scourge, in which the measured temperature Ti; TC- minimum temperature rail scourge when it's fixed, determine the average values of the longitudinal compressive every scourge forces. From the expression where KCRthe curvature of the legal track of the scourge; Klionthe curvature of the left rail of the scourge; S is the average distance between the axes of adjacent sleepers, determine the force that tends to move the sleepers across the way, and compare the values of the last forces H them with admissible values for this section of the route. The method makes it possible to determine the longitudinal-transverse stability of rail-sleeper lattice under the action of this longitudinal temperature compressive forces.

The invention relates to x2">

There is a method of determining the state of the rail-sleeper grid operated welded railway tracks, namely, that potenzmitteln means continuously measure the curvature of the rail lashes in the plane of the path (ed. St. USSR N 379719, CL E 01 35/02, 1973).

The technical result of the invention is the determination of the longitudinal-transverse stability of the rail and tie lattice path under the action of this longitudinal temperature compressive forces.

For this purpose, the method of determining the state of the rail-sleeper grid operated welded rail track, mainly its longitudinal lateral stability under the action of this longitudinal temperature compressive forces, namely, that potenzmitteln means continuously measure the curvature of the rail lashes in the plane of the path, measuring the curvature of the rail lashes periodically measure the temperature of these lashes using contactless temperature sensors, determine average values of the longitudinal compressive each rail scourge forces in expression

P= 25F Ti-T is given, where P is the cross-sectional area of the rail scourge, cm2;

n number of sections rail scourge, kotoji,aboutWith, then determine the force tending to move the sleepers across the way, in the words

H P(KCR+ KlionS

Dan, where KCRand Klionthe curvature of the respectively right and left rail of the scourge, cm-1;

S the average distance between the axes of adjacent sleepers, m, and compare the values of the last forces N s admitted their values for a given section of the route.

The method consists in the following.

Determine during the installation or repair of jointless tracks on any site (within the boundaries of each pair of welded whips) the following source data necessary for the subsequent implementation of the method: conditional parcel number jointless tracks; the coordinates of the beginning and end of the plot (km, picket, the distance of the beginning and end rail of the scourge, (m) from the picket sign in the course of kilometers; the cross-sectional area of rails 2F, cm2; the average distance between the axes of adjacent sleepers S on this site; minimum measured temperature of rail lashes TCwhen it is docked in the rail fastenings on the site.

Enter these data for long-term use in the memory of the onboard computer potenzmitteln car, prescriptie to the us still original data replaced with new ones.

Measure the proximity sensors when driving potenzmitteln car every 50-100 m temperature rail scourge.

Transfer these measurements to the temperature of rail lashes in onboard computing machine potenzmitteln car and calculate on the machine for each plot (two welded rail lashes) average temperature compressive rail scourge forces in expression

(Pt)cf= 25 F Ti-T

Dan, where n is the number of sections in this area, in which the measured temperature of the rails.

Pass the value (Pt)cfin memory of the onboard computer.

Measured continuously at each site using inertial way the curvature of the rail lashes in the plane of the path of the right and left of the scourge TOCRand Klionm-1record it on the tape potenzmitteln car and passed into the memory of the onboard computer. Determine continuously in each cross section of the controlled area jointless tracks with on-Board computers potenzmitteln of the carriage during its movement on the plot of the values of the forces tending to move the sleepers rail-sleeper grid across SUB>t)max(KCR+KlionS, Dan

Record these values on the paper tape graphically. Compare the values of this indicator with admissible values of (N) depending on the kind and material of the ballast material sleepers, the degree of filling sleeper boxes, sizes of shoulder ballast, contamination of the ballast layer, the presence of bursts in the path of the share otrajennyh sleepers (), missed on the way in the number of cargo after work associated with the softening of the ballast.

In places, where H(N), resistance jointless tracks are provided, and where N>(H) are dangerous in the meaning of the loss of transverse stability of the rail and tie lattice paths.

Also determine the Hmaxfor this plot, at a time when it maximum for a given region of positive temperatures rails, computing Hmaxon the same computing machine according to the formula

Hmax= (Pt)max(KCR+KlionS/ Dan where (Rt)maxthe maximum longitudinal compressive force in the rails, it is possible on this section of road.

Compare Hmaxs (N) and draw conclusions about the sustainability of jointless tracks when the section of MAXIMO WELDED RAIL track, mostly its longitudinal lateral stability under the action of this longitudinal temperature compressive forces, namely, that potenzmitteln means continuously measure the curvature of the rail lashes in the plane of the path, wherein measuring the curvature of the rail lashes, periodically measure the temperature of these lashes using contactless temperature sensors, determine average values of the longitudinal compressive each rail scourge forces in expression

< / BR>
where F is the cross-sectional area of the rail scourge, cm2;

n number of sections rail scourge, in which the measured temperature Ti;

T3the minimum temperature of the rail scourge when it's fixed,oWITH,

then continuously determine the force that tends to move the sleepers across the way, in the words

< / BR>
where Kppthe curvature of the right rail of the scourge;

Kleinthe curvature of the left rail of the scourge;

S the average distance between the axes of adjacent sleepers, m,

and compare the values of the last forces H them with admissible values for this section of the route.

 

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