Method of condition monitoring of railway track

 

The invention relates to diagnostics of railway tracks and can be used to automate the alignment plan and profile rail track with their current contents. Method of condition monitoring of railway track is done by gridding readings potenzmitteln devices to control the network using the on-Board computer installed on vipavadee car. The surveyed section of railway track binding to produce the coordinate system of the reference network. This is done using the database of the control system, which is injected computational coordinates, mark and stationing frames with measurements of distances to the nearest rail. On the basis of these data programmatically build a digital model of the route angles of rotation of the subject site path. Then combine the coordinate system potenzmitteln device and the fixed network. Next get the exact continuous coordinate model, which is judged on the condition of the railway track for production in the project, or to an optimum position. The technical result consists in increasing the efficiency of track machines and mechanisms for alignment path. 2 Il.

The known method of alignment (L-1) rail curve marked manually through the same intervals, measure the boom bending from chords, or the coordinates of the track axis at these points. Then one or another scheme calculates the data and shift the way at points dividing curve. The magnitude of the shifts is introduced into the onboard computer vipavadee machine, which carries out the leveling curve at the points of division. With regard to the automatic shooting arrows carriage-potenzmitel or potenzmitteln system myprivacy machines to achieve the required accuracy of determining the actual position of the path you want to bind a coordinate system in which the machine operates, to a three-dimensional rectangular coordinate system reference network. For these purposes, developed specialized expensive and unfortunately ineffective opto-electronic devices (L-2).

The closest in technical essence is a way of bearing the railroad tracks, described in (L-1). He is taken as a prototype.

The prototype does not provide accurate and efficient posture of the railway track in plan and in profile.

The technical result of the claimed object is expressed in increasing the efficiency of track machines and mechanisms, zadorozhnogo path using the database of the control system, in which the calculated coordinates of the mark and the stationing of frames with measurements of distances and overvoltages to the nearest rail. From these data, determine the coordinates of the mark and the stationing points of the rail head, forming a precise digital model of rail (DEM) in the three-dimensional system of rectangular coordinates of the reference network.

Next programmatically form a sparse two-dimensional digital model of the rotation angles of the tracks (CMU) of the subject site path. This rarefied reference model is based on the coordinates stored in the database of the control system by solving the inverse geodetic problems. To do this, calculate the azimuth angles of chords andiand sharp corners overlapping triangles ei,, ei+1. Then define a two-dimensional array of precise curvilinear coordinates polar coordinates M: M=(ai, si), where si- stationing Central point of the i-th segment of the curve (see Fig.1).

An array of M can be represented as the graph of the function a(s). Cm. Fig.2.

Then according to car potenzmitel or potenzmitteln device vipavadee machines build approximately tied to the stationing s transfer function of the anglesin which the angles of rotation andnicalc">i- measured arrows;

dsnithe digitization interval (the distance between adjacent shafts;

=206265.

Inclined (corresponding circular curves) and horizontal (corresponding direct) plots of the graphs of the approximate straight line by the least squares method. The intersection of lines forming two wires configuration: exact (A b C D E...) and close (and in d e...).

Further, by a two-dimensional affine transformations And transfer configuration (a b C d e...) in the exact configuration (a b C D E...) that is the key point of the automated binding of the coordinate system potenzmitteln cars (machines). Then the coordinates of ai, siany configuration points (a to C d e...) are translated into precise coordinates andTiSTiby the well-known rule transform vectors from one coordinate system to another

where a is the matrix affinnova coordinates conversion;

n is the number of points in the configuration.

Thus, stationing potenzmitteln devices approximated with an accuracy of about 1 m, combined with the stationing reference network. The elements of the matrix aff is, for example, in the work - Matveev S. I. Digital transform space images with the measured coordinates of the centers of photography /Works of Engineering, vol.915, 1998, S. 29-31/.

Potenzmittel performed continuous measurements of distances on rails and arrowsat a constant length of the d chord. For data processing potenzmittel take the following initial data: xbeg, ybegsome initial points of the DEM and its stationing sbegand the azimuth anglebegprevious direct site.

Consider the following relations. Changing the direction of the length of the chord of d is equal to

The length of the curve based on the chord

=R.

The relationship of the chord length with a radius of curvature

d=2Rsin(/2).

The bond length of the curve with the angle of rotation

Derivative directions from stationing

According to the results of measurement of arrows calculate the azimuth angles and the coordinates of the points that the stationing correspond to control points DEM

The initial values of coordinates of control points DEM take source. When calculated residualsx=x’-xy=y’-y used to calculate the coordinates of intermediate points.

The coordinates of the intermediate points are calculated by the formulas (1) to(3) and corrected by amendmentxI received the interpolation is proportional to the distance from the previous point DEM between corresponding amendments to the previous and next waypoints DEM.

Thus have high-precision continuous digital (coordinate) model rail, or the axis of the plan the path in the coordinate system of the fixed network with an accuracy of 5-10 mm, This model is ready for automated alignment of curves with the introduction of its in-Board computers myprivacy machines and mechanisms, equipped with software for alignment the not by arrows, and the coordinates that only allows you to lead the way to the project outline.

Sources of information taken into account in the preparation of patent application:

1. The technical requirements. Special reference system condition monitoring of railway track in the profile tion path. 2000, 125 S.

Claims

Method of condition monitoring of railway track by gridding readings potenzmitteln devices to control the network using the on-Board computer installed on vipavadee machine, characterized in that the surveyed section of railway track binding to produce the coordinate system of the reference network, using the database of the control system, which enter the calculated coordinates of the mark and the stationing of frames with measurements of distances to the nearest rail, then on the basis of these data programmatically build a digital model of the route angles of rotation of the subject site path, then combine coordinate system potenzmitteln device and the fixed network, then get the exact continuous coordinate model, which is judged on the condition of the railway track for production in the project or in more optimal position.

 

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2 cl, 3 dwg

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