Method of and device for determining spatial parameters of rail track

FIELD: railway transport.

SUBSTANCE: invention relates to methods of continuous recording of spatial position of track gauge. Proposed method includes recording of information from pickups of rail-to-rail space, covered distance, current course angle, longitudinal and cross grades at vehicle running and calculating of current coordinates of track gauge using data of pickups. Recording of course angle and longitudinal grade from said pickups and determination of current coordinates Xi,Yi,Hi is carried out for one of rail lines relative by any initial direction in horizontal plane at measuring pitch 1. Coordinates of point im corresponding to middle of straightline section connecting extreme points i0 and in are calculated by measured coordinates of extreme points for each preset section of track Pi. Deflection of rail in horizontal and vertical planes, δihδiv respectively, is determined by difference between calculated coordinate of indicated point and measured coordinate of corresponding point. Device for determining spatial parameters of rail tracks has running truck including support wheel and first and second measuring wheels and odometer wheel arranged on one axle over one of rail lines. Support wheel is connected with measuring wheels by link installed at angle of 90° relative to direction of running. Track gauge width pickup is installed on said link. Distance pickup is mounted on odometer wheel. Course and roll indicator is installed on axle connecting measuring wheels. Outputs of distance pickups, track gauge pickup and course and roll indicator are connected with computer through controller.

EFFECT: enlarged functional capabilities, with possibility of determination of relative position of track section in vertical and horizontal planes (level and sag), together with determination of spatial coordinates.

3 cl, 3 dwg

 

The invention relates to railway transport, in particular to methods of continuous registration of the spatial position of a rail track in the diagnosis of way, survey, and other kinds of works with the use of cars-track measurement, lining, leveling machines, potenzmitteln trucks.

Known methods of determining the spatial position of railway track using installed on moving along the railway vehicle devices engaged when moving the vehicle measurement of distance traveled, arrows bending of the rail relative to the baseline in the vertical and horizontal planes (drawdown and straightening), the position of the path in the transverse level gauge (for example, USSR author's certificate No. 432262, E 01 35/06, USSR author's certificate No. 121137, E 01 35/00).

These technical solutions do not allow to determine the position of the path relative to the project coordinate and determine long irregularities exceeding the length of the base dimension.

The known method and device for its implementation, which allows determination of the spatial position of rail track by means of the continuous reception of the primary information, retiring placed on the moving rail transport platform the e sensor rate, gyroscopic sensor angle on the course (pitch), gyroscopic tilt sensor path in the transverse profile (tilt sensor), sensor distance traveled, sensor mezhrelsovyh distance and sensor immersion transport platform. Information from these sensors are converted into digital form, is passed into the computing unit, convert the data in the spatial coordinates of the track and fix them in the registering unit [RF patent №2026448, E 01 35/00].

The disadvantage of this technical solution is the limited possibilities for determining the spatial position, in particular, the method does not allow to determine alignment and drawdown, i.e. the relative position of the distances in the vertical and horizontal planes.

Object of the invention is to provide a method for determining the spatial position of the track and device for its implementation with enhanced functionality, allowing simultaneously with the determination of spatial coordinates to determine the mutual position of the distances in the vertical and horizontal planes (adjustment and drawdown).

The problem is solved in that in the method for determining the spatial position of a rail track, including registration information from sensors mezhrelsovyh RA is standing, the traversed path, the current course angle, longitudinal and cross slope when the vehicle is and calculate from these data the current coordinates of a rail track, according to the invention registration and course angle and longitudinal slope from these sensors and the determination of the current coordinates of Xi, YiHiperform one of the rail thread with respect to any of the source direction in the horizontal plane, with a step dimension l

where Δd - permissible error of measurement of the boom bending;

dmax- maximum boom bending.

In addition, for each predetermined section of the route Pi(measuring base on the measured coordinates of its extreme points of i0and incalculate the coordinates of the point of icfcorresponding to the middle of the straight line (chord)connecting these points as the average of these coordinates

where Xi(ISM), Yi(ISM)Hi(ISM)the current coordinates of the rails at the points of i0and in;

n is the number of unit increments path (steps dimensions (l) for measuring the basis of Pi;

The difference between the calculated coordinate of the specified point (lying in the middle, connecting Rainie point specified measuring base cut line) and the measured coordinate of the corresponding point determine the value of the boom bending in accordance with the expression

where δ- bolt bending in the horizontal plane;

δIB- bolt bending in the vertical plane.

The coordinates of the second rails X'i(ISM), Y'i(ISM)N'i(ISM)determined in accordance with the expression

where Xi(ISM), Yi(ISM)Ni(ISM)the current coordinates of the first rails;

lW- track width;

and the value of the shafts bend in the plan δ' (straightening) and arrows bend profile δIB' calculate similarly the first rails in accordance with the expression

where

The task is solved in that the device for determining the spatial parameters of the track contains a running truck that includes a support wheel located on one axis over one of the rail lines in the first and second measuring wheels and measuring wheel, this wheel is connected with the measuring wheels installed at an angle of 90° relative to the direction of movement of the rod, on which the sensor is installed gauge, for measuring wheel mounted sensor path, and on the axis connecting the measuring wheel is set cursoradapter, the outputs of the encoder, the sensor width is Leah and cursorrooster connected through the controller with your computer.

Figure 1 shows the General view of the device for implementing the method according to the invention; figure 2 - block diagram of the measurements carried out during the implementation of the invention; figure 3 presents the schema definition of the shafts bending explaining the invention.

The device for implementing the method comprises driving the truck, including a pair of measuring wheels 1 and 2, the support wheel 3 and the measuring wheel 4. The wheel 3 is connected with the measuring wheel 1, 2 rod 5 that is installed at an angle of 90° relative to the direction of motion. On the rod 5 has a sensor 6 gauge (for example, an inductive proximity sensor type 4D-3). On the measuring wheel 4 is mounted sensor 7 ways (for example, rotor-stator with the optical system of the pulse (optocoupler). On the axis connecting the wheels 1 and 2, cursoradapter 8, for example of the type of SGCU representing a gyroscopic system, allowing to determine the heading angle α, longitudinal angle ϕ and cross slope ϒ. The outputs of the sensors 6, 7 and cursorrooster 8 are connected with the inputs of the controller 9. The controller 9, is executed on the microprocessor (for example, SD)carries out the registration information from the sensors 6, 7, 8, converting these signals into digital form, primary processing and transfer of data to the computer 10. The value of the measuring base R obuslovlena the tsya kinds of works can be from 10 to 100 meters and more. Usually this value is 20 meters.

The method according to the invention is as follows.

The maximum measuring step lmaxis determined from established authors empirical relationship that ensures the required accuracy of the measurement method due to mutual (spatial) satisfy the average points lying on actual measurement basis of R and on the straight line (chord)connecting the extreme points of i0and in,

If the required accuracy of dmaxmeasuring cantilever deflection is 2 mm at maximum boom bend 100 mm, then the step value dimension l should be not more than 20 mm.

Thus, the maximum distance between points with known coordinates in the implementation of this method will be determined by the required accuracy of measurements Δd and maximum boom bending dmax.

When the movement of the measuring wheel 1, 2 on one of the rail lines on each given measurement basis of Piin the investigated section of railway track signal detector 7 is supplied to the controller 9 increments of l, when it is polled sensor gauge 6 and the sensor of course 8.

The signals of the sensors 6, 7, 8 corresponding to the track width lW, azimuth αlongitudinal ϕ cross corner ϒcoming in to the troller 9, where is converted into digital form and then transmitted to the computer 10. The computer 10 calculates the increments of l the current coordinates of this rails. The current coordinates Xi(ISM), Yi(ISM)Hi(ISM)for rails, which were measured (on which you installed cursoradapter 8 and the encoder 7), calculated by the computer 10 in accordance with the expression

where X0, Y0N0- the initial (original) coordinates;

α azimuth;

ϕ - longitudinal angle;

l - step measurements.

When you do this consistently for each measurement basison the measured coordinates of the extreme points of i0and inthe computer 10 calculates their average values

The average values of the coordinates correspond to the coordinates of a point lying on the middle of the notional straight line (chord)connecting points of i0and in(figure 3).

Further values are calculated arrows bend in the plan δ(auto body) and the value of the shafts bend profile δIB(drawdown) in accordance with the expression

The coordinates of the second rails X'i(ISM), Y'i(ISM)N'i(ISM)calculated by the formula

where lW- track width

γ - transverse angle (elevated rail);

α and course angle.

The value of the shafts bend in the plan δ(straightening) and arrows bend profile δIB(drawdown) is calculated similarly shown above, in accordance with the expression

As can be seen, the measurement according to the described method are (can be) without reference to any coordinate system. If you want to determine (translation) coordinates that are defined according to the described method, in any specifically defined (e.g., state) coordinate system, calculates the ratio of the angular orientation Δβ

whereand- the measured value of coordinates on the journey

for example, 1 km;

ΔXtand ΔYt- coordinate increment on the same lot as the path S is selected, for example state, the coordinate system (ΔXtand ΔYtcan be obtained, for example, a GPS receiver).

After relocation to the new (selected) the coordinate system is carried out in accordance with the expression

where Xnand Yn- coordinates in the new coordinate system, such as GOS the gift;

X0ISM, Y0ISM- coordinates of the initial point.

Coordinates (the coordinate increment) ΔXi(ISM)and ΔYi(ISM)is determined from the expression

Thus, the technical solution according to the invention allows to determine the spatial position of a rail track in any coordinate system, to determine the deviation of the path from the design position, to define both the spatial coordinates of the boom bending, subsidence and alignment for each rail line (in standard CP or any other) without restrictions on the length of the measuring base.

The use of the invention in measuring diagnostic technique allows you to:

• to determine the design position of the rail track;

• be used to determine the geometric parameters of the vehicle with a short base, for example up to 100 cm;

• to determine alignment and drawdown potenzmitteln trolleys;

• to calculate arrows bend for lining, straightening machines, cars, track measurement, etc. having different base lengths of the chords)in a single standard;

• identify long irregularities (zawodny), to calculate the spatial position of a rail track with respect to any original direction.

1. The way to define which of the spatial position of a rail track, including continuous registration information from sensors mezhrelsovyh distance, trip distance, current course angle, longitudinal and transverse gradients during movement of the vehicle and determine from these data, the current coordinates of a rail track, characterized in that the registration and course angle and longitudinal slope from these sensors and the determination of the current coordinates of Xi, YiNiperform one of the rail thread with respect to any of the source direction in the horizontal plane with a step of measuring

where Δd - permissible error of measurement of the boom bending;

dmax- maximum boom bend,

in addition, for each given section of road Ri(measuring base), on the measured coordinates of its extreme points of i0and incalculate the coordinates of the point of icpcorresponding to the middle of the straight line (chord)connecting these points, the average value of the coordinates

where Xi(ISM), Yi(ISM)Hi(ISM)- the current coordinates of this rails at the points of i0and in;

n is the number of unit increments path (steps measurement 1) measuring the basis of Piand

and the difference between the calculated coordinate of the specified point (lying on the middle of the notional straight line connecting the extreme points of the set of measurement bases) and the measured coordinate of the corresponding point on the actual measurement database, determine the value of the boom bending in the horizontal and vertical plane in accordance with the expression

2. The method according to claim 1, characterized in that the coordinates of the second rails X'i(ISM), Y'i(ISM)Hi(ISM)determined in accordance with the expression

where Xi(ISM), Yi(ISM)Hi(ISM)the current coordinates of the first rails;

lW- track width,

and the value of the shafts bend in the plan δ(straightening) and arrows bend profile δIBcalculated in accordance with expressions

where

3. Device for determining the spatial parameters of the track containing the undercarriage of the truck, including the support wheel located on one axis over one of the rail lines in the first and second measuring wheels and measuring wheel, this wheel is connected with the measuring wheels installed at an angle of 90° consider what Ino the direction of motion of the rod, which includes a sensor gauge, for measuring wheel mounted sensor path, the axis connecting the measuring wheel is set cursoradapter, and the outputs of the sensors road and track widths and cursorrooster connected through the controller with your computer.



 

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EFFECT: increased accuracy and speed of insertion device arrangement on the base, simplified usage and reduced cost.

11 cl, 5 dwg

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