Track building machine and method of registering measured values

^q BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track construction machine having a machine frame mounted on bogies, comprising a front frame and a rear frame, arranged in the working direction and articulated to each other, and having a reference system for operating at least a working unit arranged on a machine frame and a method for recording the measured values.

Prior_techniques

GB 2 268 021 discloses a gravel bed cleaner made of two articulated frame parts. The laser reference system is used to record the longitudinal inclination of the track in the region of the front frame part in order to be able to adequately control the working units arranged on the second frame part by means of this measurement. For this purpose is modified_of a laser transmitter that is permanently held in a horizontal position. A laser receiver is provided on the front chassis of the first frame part, which serves to register the longitudinal inclination of the first frame part with respect to the horizontal reference plane of the laser. The longitudinal slope value, calculated by the algorithm, is passed over time to the next lase plane of the receiver provided on the chain puller on the second rim of the worm portion, allowing to control the height position of the chain puller.

GB 2 268 52S also discloses a gravel bed cleaner.

In which a measuring device of longitudinal and transverse inclination is fastened on both the first frame part and the second frame part.

_? In the region of the first frame part, the measured longitudinal slope of the track is stored as a setpoint value and is transmitted over time to control the height position of the chain puller. For this, account must be taken of the actual inclination recorded by the longitudinal inclination measuring device of the second frame part. To control the height position of the chain puller, a cable potentiometer is provided between the second frame part and between the chain puller.

Substance_of the invention

SUMMARY OF THE INVENTION It is an object of the present invention to provide a track construction machine of the kind mentioned at the outset which, by using simple means, would enable a relatively precise reconstruction of the track position disturbed by the use of working units.

According to the invention, this object is achieved by the track construction machine described above by providing a reference system arranged on the front frame part between two bogies in the machine direction along a longitudinal machine direction and a rolling measuring axis with a measuring device detecting in the transverse machine direction. a relative movement between the reference line and between the measuring axis is formed and an angle measuring device is provided for detecting the actual frame angle clamped by the two frame parts.

With this design, at a relatively low construction cost, it is possible to measure the actual position of the track immediately before it is disturbed and through the angular relation of the rear frame in relation to

3 to the front frame part, which is permanently on the actual rail position, to reproduce the recorded actual track position for operating the working units. It is assumed here that at the geometrical point of the points, which is created by the measured track values ​​and which corresponds to the actual track position, the theoretical desired position of the rear frame part can be easily calculated. Because through the angle measuring device can

It is also possible to calculate the displacement values ​​required for the operation of the working units by simply and reliably calculating the actual position of the frame part zones.

Further advantageous embodiments of the invention follow from the dependent claims and the drawings.

The invention is explained in more detail below with reference to the exemplary embodiments shown in the drawings.

Fig. 1 shows a simplified side view of a ballast bed construction machine with a reference system that measures rail side position errors for operating aggregates.

Fig. 2 shows a coordinate system with a geometric point location created by measuring arrow heights.

Fig. 3 shows another track construction machine suitable for track reconstruction.

FIG. 4 shows a schematic simplified illustration of an angle measuring device.

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Examples_groyed_invention __________ ....... . ... ._____

The machine 1 shown in FIG. 1 has a machine frame 3 mounted on rails 2. This machine frame.^q 3 is composed of a front frame part 2 ⁱⁿ of the working direction shown by the arrow 4 and from the rear frame part 7 which is connected to it by means of a hinge 6. On the rear frame part 7 various working units 8 in the form of a chain | of the puller 9 and the track lifting device 14. The working units 8 are adjustable relative to the back. by means of drives 11. The gravel which is withdrawn from the track bed 14 by means of an endless chain puller 9 is conveyed by means of a conveyor belt 12 to a screening car connected to the rear frame part 7 for the sake of simplicity, cleaned there and cleaned by means of a conveyor belt 13 of the rail bed is discarded onto the rail 14 or the loose ground floor.

A reference system 15 for recording lateral position errors of the actual track position 14 is provided on the front frame part 5.

This reference system is formed from a reference line 16, which is arranged in the longitudinal direction of the machine 1, is centrally arranged in the transverse direction of the track 14, and is formed as a steel chord, z her? This consists of a linear potentiometer, for recording the relative displacement between the measuring axis 17 and the reference line 16, which is displaceable in the transverse direction of the machine 1. The measuring axis 17, which can be rolled on the rail 14 by means of flanges 19 and fastened to the front frame part 5, is pushed in the transverse direction of the machine 1 against one of the two rails 14 by means of a drive not shown. · · · »To •

- 5. ... running, the bike is 14 on exclusion. A track measuring device 20 is provided for recording the path performed. An angle measuring device 21 is provided in the region of the hinge 6 for recording both the frame parts of the closed actual frame angle &amp; lt; 0 in terms of the horizontal plane or the contact points of the bogies of the parallel plane, see FIG. If it is also required to record the height of the track 14 parallel to the track side position 14, an angle measuring device 21 is required to register the vertical angle enclosed in the vertical plane between the two frame parts 5, 4.

With reference to FIG. 2, the coordinate system depicted on the x-axis of the machine track 20 shows the track recorded and the y-axis deviation of the lateral position, i.e. the direction error of the geometric point 22, representing the actual track position. measured by means of the measuring device 18 of the reference system 15 on the front frame part χ, it is possible to approach said geometric point 22 of the track points 14 in conjunction with the polygonal order 23, shown in dashed lines.

Distance between pivot pins of both front bogies χ, kteb. It is used to support the front frame part 5 and has a size of meters. The measuring axis 17 is arranged centrally between the two undercarriages χ, i.e. the height arrow measurements are taken at intervals of 6 meters, thus creating a length of the angle of 6 meters | r. The spacing between the pivot pins of the two rear bogies χ supporting the rear frame part 7 is 24 meters, thereby substantially simplifying the creation of corresponding computational | 8. Before starting work, the length of the machine to the workstation, that is 36 meters, should be measured, thus making the »1 w« The five heights f of the line segment were already geometrical instead of 22 flanks,_r see Fig. 2. The hinge 6 of the two frame parts 5, 7 is exactly below the geometry at the geometric position 22 of the flanks exactly at the front, the front pivot pin 24 of the machine frame 3 is removed. the rear pivot pin 25 of the rear frame part 7 is also visible.

Also shown here is the frame angle 6 which is clamped by the two frame parts 7, which is detected by the angle measuring device 21. q6 illustrates the desired frame angle gripped by the theoretical demand given by the position of the rear frame portion 7 with the front frame portion

I 5 in the form of climb / k_O/.

ί. M

As can be seen from FIG. 2, the reference system 15 is used to continuously detect the heights of the segment at a distance of 6 meters during the forward work of the machine. Once the five heights f of the segment within the machine frame 3 are known, a geometric point of 22 points can be approached based on the polygon show. The position of the machine 1 is counted into this geometric point 22, with the joint 6 being exactly uy. Because the front frame portion 2 j^E still at the actual position of track 14, both the hinge 6 and the front pivot pin 24 are at a geometric point 22 points. Another known variable t is the length of the rear frame part 7. From these facts, it is very easy to calculate the theoretical desired position of the rear frame part 7, which is indicated as the desired position 26 by a dashed line and for which the rear pivot 25 has to be 22 points.

From the theoretical desired position 26 of the rear frame portion 7, a desired frame angle Δ &amp; lt; The actual frame angle detectable by the angle measuring device 21 is also expediently referred to as the pitch Δ y / Δ x.

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9 The deviation or misalignment of the rear frame part 7 relative to the theoretical desired position 26 can be indicated by making a difference between the actual frame angle / 3 and the desired frame angle, or between the actual and desired pitch / k. , k₂The lateral deviation from the desired position, for example at the rear pivot pin 25, is then simply formed by multiplying the pitch difference with the length of the machine 1. By corresponding action of the drive 11, compaction relative to the rear frame part 7 is effected until the working unit 8 gets to the desired position corresponding to the actual position for reconstruction in the front frame part 2 of the measured actual position of the track 14 before the working units 8 are mounted. »

The following equations are described in more detail below. The following formulas are created for the y values ​​of the geometric point 22 points:

Ji = 2 · I-! y₂ = 2. / 2ί_χ + f₂/ y, = 2. / 3 ^ + 2f₂ + f Z y₄ = 2 · 4f_x + 3f₂ + 2f₃ + f₄/ y₅ = 2. Z5fj + 4f₂ + 3f₃ + 2f₄ + fj /

For the pitch difference ^ k = diferenci y / £&gt; x, the following formulas are created, exactly after a new section height of 6 m has been measured:

Δ k / Δ &lt;// = k₂ / c4₂/ - to ^ / - ^ 3 ₌ ^3-^5 ,

2s p

2s

Where s_ is the length of the front frame portion 5 and 2s is the length of the rear rim portion 7.

The following formulas shall be used for further interpolation when traveling between two measured heights f of the line segment, where x is a distance of 0 to 6 m in each case:

OF

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^y3

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with

OF

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/5^ +

4f₉ + 3f \ + 2f + f '/ x // 2 3 4?

ůk

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2s

In order to produce pitches independent of units, the heights of the sections, chords and places must be inserted into the calculation formulas in the same units, for example in / m /.

FIG. 3 shows another embodiment of the machine 1 suitable for the reconstruction of track 14. For simplicity, functionally identical parts are indicated by the same reference numerals as in FIG. 1. The machine frame 2 θ is also formed in two parts, with the front frame part 5. It is connected to the rear frame part 7 by means of a hinge 6. The front frame part is provided with a reference system 15, a reference line 16 and a measuring axis 17 for recording the lateral position of the track 14. An angle measuring device 21 is provided on the joint 6. The rear frame part 7 is supported at the rear end on a leveled ballast bed 28 by means of a crawler chassis 27. A height and laterally adjustable leveling device 25 and a device 34 for accommodating new sleepers 30 are provided as working aggregates 8. 32. For bicycle position reconstruction • (

- 9 ί;

WITH'_; , it is also possible._AND33 Depending on the size of the steering registered by the reference system 15 and the angle measuring device 21, for the tracked bogie 27, the working units 8 are also automatically centered by the steering of the tracked bogie 27.

A simplified and larger-scale view of the angle measuring device 21 shown in FIG. 4 has, in the region of the hinge 6, a cable petenciometer 39 connected to the two frame portions 5, 7 for recording the actual frame angle [3] clamped relative to the horizontal. For the combination of both frame torsion^pcs° is arranged vertically to each other and both frame parts jj, J7 connecting the cable potentiometer 36 ♦

In a variant, the reference line 16 could naturally also be in the form of a laser beam. Likewise, a normal vehicle coupling could be provided instead of the hinge 6 for connecting the two frame parts 5, 7.