DE102022133011A1 - MEASURING DEVICE AND MEASURING METHOD FOR A CONTACT WIRE OF AN OVERHEAD LINE - Google Patents

Abstract

A measuring method (30) for a contact wire (14) of an overhead line of a railway line is provided. According to the invention, a distance to the contact wire (14) is measured at a plurality of measuring points (18) in a plurality of measuring steps (32) along a measuring section (15) which is arranged in a transverse direction (17) to the contact wire (14).

Description

The present invention relates to a measuring device and a measuring method for a contact wire of an overhead line of a railway line.

For example, from the EN 102007013669A1 It is known to monitor a contact wire. A method is shown there for measuring the fine waviness of installed contact wires in rail traffic, whereby a camera and/or a laser optically detects the contact wire and its course is recorded via a receiving device.

The invention is based on the object of improving the inspection of a contact wire.

This object is achieved with a measuring method according to claim 1 and a measuring device according to claim 5. Advantageous developments of the invention are specified in the subclaims.

In the measuring method according to the invention for a contact wire of an overhead line of a railway line, a distance to the contact wire is measured at several measuring points in several measuring steps along a measuring section which is arranged in a transverse direction to the contact wire.

This makes it possible to advantageously determine the contour of the contact wire.

In an advantageous embodiment of the measuring method according to the invention, at least two distances from neighboring measuring points are compared with each other in an evaluation step of the distances determined in the measuring steps.

This allows an increase in the contour of the contact wire to be detected.

In a further advantageous embodiment of the measuring method according to the invention, a negative result is generated when the at least two distances between adjacent measuring points are equal.

This detects a flat spot on the contact wire, which indicates wear.

In a further advantageous embodiment of the measuring method according to the invention, the measuring section is arranged between rails of a track during the measuring steps.

This means that the measurement procedure can be carried out with minimal impact on train traffic. In particular, instead of a full closure, an accident prevention closure could be sufficient to ensure safety.

The measuring device according to the invention for a contact wire of an overhead line of a railway line comprises a measuring section that can be positioned between or on the rails of a track and a distance meter arranged on the measuring section. The distance meter can be positioned on the measuring section at several measuring points.

The measuring device advantageously makes it possible to carry out the measuring procedure described above and to obtain a statement on the condition of the contact wire in a simple manner.

In an advantageous embodiment of the measuring device according to the invention, at least two adjacent measuring points are spaced apart from one another by less than 100 µm. In particular, all adjacent measuring points are spaced apart from one another by less than 100 µm.

This makes it possible to scan the contact wire more precisely and thus detect even smaller flat spots.

• 1 eine erste Ansicht einer erfindungsgemäßen Messvorrichtung in einer beispielhaften Ausgestaltung;
• 2 eine zweite Skizze zur Messvorrichtung; und
• 3 ein erfindungsgemäßes Messverfahren in einer beispielhaften Ausführung.

Further advantages of the present invention are apparent from the detailed description and the figures. The invention is explained in more detail with reference to the figures and the following description. They show:

• 1 a first view of a measuring device according to the invention in an exemplary embodiment;
• 2 a second sketch of the measuring device; and
• 3 an inventive measuring method in an exemplary embodiment.

In the 1 and 2 is outlined in each case how the measuring method 30 according to the invention is operated in an exemplary embodiment with a measuring device 10 according to the invention in an exemplary embodiment. In the 3 the measuring method 30 according to the invention is shown in a diagram from a start 31 to an end 37 in an exemplary embodiment.

The measuring method 10 according to the invention for a contact wire 14 of an overhead line of a railway line comprises several measuring steps 32, which are carried out along a measuring section 15 at different measuring points 18 of the measuring section 15. At least two measuring points 18 adjacent to one another are spaced apart by less than 1 mm, in particular less than 100 µm. The measuring section 15 is arranged essentially transversely to the track 11 of the railway line. The measuring section 15 is therefore arranged essentially transversely to the contact wire 14 which runs essentially longitudinally to the track 11. The track 11 comprises in particular two rails 12 which, as is usual, are arranged on sleepers 13. The measuring section 15 is arranged in particular between or on the rails 12. In this way, it is possible in the 1 and 2 shown.

The measuring device 10 comprises a rangefinder 16. During one of the measuring steps 32, the rangefinder 16 is used to measure a distance from the rangefinder 16 to the contact wire 14, more precisely to the surface of the contact wire 14. The distance is measured at a predefined angle to the measuring section 15, in particular at a right angle. The predefined angle preferably has the same value in all measuring steps 32.

The measuring device 10 according to the invention is designed in such a way that the distance meter 16 can be moved along the measuring section 15, in particular the distance meter 16 can be moved along the measuring section 15. In the measuring method 30, a positioning step 33 is carried out between the measuring steps 32, in which the distance meter 16 is moved in a transverse direction 17 to the contact wire 14 along the measuring section 15 to the next measuring point 18. In particular, the measuring device 10 has a drive for this purpose. In particular, a measuring step 32 is carried out for each measuring point 18. The surface of the contact wire 14 is scanned by the various measuring steps 32 at the various measuring points 18. The resolution is predefined by the distances between the measuring points 18.

In the measuring method 30 according to the invention, an evaluation step 34 is preferably carried out after the measuring steps 32. In this evaluation step 34, the distances determined in the measuring steps 32 are considered. A contour of the contact wire 14 can be determined from the values of the distances determined in the measuring steps 32. The contour, in turn, can be used to identify the wear of the contact wire 14. The contour of the contact wire 14 is at least partially identified based on the distances and the respective associated measuring point 18. In particular, in the evaluation step 34, a comparison is made as to whether the distances determined from at least two adjacent measuring points 18 are the same size, and therefore have the same value. This indicates a flat area 19, which in turn indicates wear of the contact wire 14. In this way, it is possible in the 2 illustrated. A more convex contour, on the other hand, would indicate less wear. Two results 35, 36 in particular emerge from the evaluation step 34. If the comparison of the distance values shows that the contact wire 14 has no flat area, or at least a flat area dimensioned below a predefined threshold value, a positive result 35 in particular results - the contact wire 14 is not worn. If the comparison of the distance values shows that the contact wire 14 has a flat area dimensioned above a predefined threshold value, a negative result 36 in particular results - the contact wire 14 is worn.

List of reference symbols:

10

Measuring device

11

Track

12

rail

13

threshold

14

Contact wire

15

Measuring section

16

Rangefinder

17

Transverse direction

18

Measuring point

19

Flat area

30

Measurement method

31

begin

32

Measuring step

33

Positioning step

34

Evaluation step

35

Positive result

36

Negative result

37

End

QUOTES INCLUDED IN THE DESCRIPTION

This list of documents listed by the applicant was generated automatically and is included solely to provide the reader with better information. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions.

Cited patent literature

• DE 102007013669 A1 [0002]

Claims (6)

Measuring method (30) for a contact wire (14) of an overhead line of a railway line, characterized in that in several measuring steps (32) along a measuring section (15) which is arranged in a transverse direction (17) to the contact wire (14), a distance to the contact wire (14) is measured at several measuring points (18). Measuring method (30) according to Claim 1 , wherein in an evaluation step (34) at least two distances from mutually adjacent measuring points (18) of the distances determined in the measuring steps (32) are compared with one another. Measuring method (30) according to Claim 2 , wherein a negative result (36) is generated if the at least two distances between adjacent measuring points (18) are equal. Measuring method (30) according to one of the preceding claims, wherein the measuring section (15) is arranged between rails (12) of a track (11) during the measuring steps (32). Measuring device (10) for a contact wire (14) of an overhead line of a railway line, characterized in that the measuring device (10) has a measuring section (15) that can be positioned between or on rails (12) of a track (11) and a distance meter (16) arranged on the measuring section (15), wherein the distance meter (16) can be positioned on the measuring section (15) at several measuring points (18). Measuring device (10) according to the preceding claim, wherein at least two adjacent measuring points (18) are spaced apart by less than 100 µm.

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