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JP-7855118-B2 - Apparatus for fixing and positioning rail monitoring elements and method for using the apparatus

JP7855118B2JP 7855118 B2JP7855118 B2JP 7855118B2JP-7855118-B2

Inventors

  • シッカー カイ
  • オルデヴュルテル カッセン

Assignees

  • ヒタチ レール ジーティーエス ドイチュランド ゲーエムベーハー

Dates

Publication Date
20260507
Application Date
20250502
Priority Date
20190820

Claims (12)

  1. A device (10) for fixing and positioning a rail monitoring element (14) on the rail web (16) of a rail (12) comprising a rail bottom (18), a rail web (16), and a rail head (34), A clamping device that can fasten the device (10) to the rail (12), A pressing member (22) for pressing the rail monitoring element (14) against the rail web (16), A biasing element (20, 54) is provided such that, when the device is in the mounted state, the pressing member (22) can be pressed against the rail web (16) by the force generated by the biasing element, It has a holder (36) for supporting the biasing elements (20, 54), The biasing element (20) is a pneumatic or hydraulic biasing element. The biasing element (20) is a pneumatic cylinder or hydraulic cylinder having at least one piston rod (24) operably connected to the pressing member (22), The device (10) is such that the pressing member (22) can be tilted relative to the at least one piston rod (24).
  2. The apparatus according to claim 1, characterized in that the clamping device is a rail bottom clamp (26) capable of fastening the device (10) to the rail bottom portion (18) of the rail (12).
  3. The device according to claim 1, wherein the clamping device is a rail head clamp (44) capable of fastening the device to the rail (12), and the rail head clamp (44) engages with the rail head (34) from above and grips the rail web (16) from both sides in the mounted state.
  4. The apparatus according to claim 1, claim 2, or claim 3, characterized in that the biasing element (20) is located on the same side of the rail (12) as the pressing member (22) in the mounted state.
  5. The apparatus according to claim 1, claim 2, or claim 3, characterized in that the biasing element (20) is located on the opposite side of the rail (12) from the pressing member (22) in the mounted state.
  6. The apparatus according to any one of claims 1 to 5, characterized in that at least one piston rod (24) is configured to be non-rotatable relative to the pressing member (22).
  7. The apparatus according to any one of claims 1 to 6, characterized in that the stroke of the pneumatic cylinder or the hydraulic cylinder can be adjusted.
  8. The apparatus according to any one of claims 1 to 7, characterized in that a control unit (28) for displaying and/or setting the pressure applied to the pressing member (22) is provided.
  9. The apparatus according to any one of claims 1 to 8, characterized in that the pressing member (22) has a housing portion for the rail monitoring element (14), and the pressing member (22) is configured to be pressed uniformly against the rail web (16).
  10. The device according to any one of claims 1 to 9, characterized in that the retainer (36) can be adjusted in a direction perpendicular to the lower surface of the rail relative to the clamping device in the mounted state.
  11. The clamping device is characterized by comprising a magnet (54) that can fasten the device (10) to the rail web (16) of the rail (12), as described in any one of claims 1 to 5 or 9.
  12. A method of using the apparatus (10) according to any one of claims 1 to 11 for adhesively bonding the rail monitoring element (14) to the rail web (16) of the rail (12).

Description

This invention relates to a device for fixing and positioning a rail monitoring element on the rail web of a rail. The rail web of a rail is located between the rail bottom and rail head of the rail. This invention further relates to a method of using the device for fixing and positioning a rail monitoring element on the rail web of a rail. A device for fixing rail monitoring elements is known from Patent Document 3. To make rail transport safer, rail monitoring elements are used, for example, sensor elements for axle counters. Axle counters can be used, in particular, to verify whether a train has completely passed a certain point, and can be used, for example, to determine whether a relevant section of track is clear or blocked. Such rail monitoring elements generally comprise sensor elements that are fastened to the rails. The importance of fiber optic sensors in rail monitoring is increasing. One or more sensors embedded in fiber optics, such as fiber Bragg gratings (FBGs), are used to detect strain or compression of the fiber caused by mechanical variables, and thus can detect force, torque, acceleration, load, pressure, etc. Rail monitoring elements with FBG sensors are known, for example, from Patent Document 2. Patent Document 2 proposes bonding and fixing the rail monitoring element to the rail, that is, joining it with an adhesive. However, in order to do this, the rail monitoring element must be positioned and fixed to the mounting location. The method of securing the sensor element of an axis counter to a rail using a clamping device is known from Patent Document 3. The device known from Patent Document 3 is used to support or fasten a sensor to a rail web, and is designed for this purpose. This device is not designed to absorb horizontal forces. Furthermore, this device is configured to fit a specific rail bottom. However, the mounting tool needs to fit a number of different rail cross-sections. The device from Patent Document 3 also requires some space below the rail, and this space cannot always be secured. An L-shaped elastic clamp for fixing an induction heating device capable of holding a planar inductor on the rail web of a rail is known from Patent Document 1. The first leg of the clamp engages from below around the bottom of the rail. The second leg of the clamp applies lateral preload to the inductor so that it is pressed against the rail web of the rail. European Patent Application Publication No. 3169138German Patent Application Publication No. 102017216811German Patent No. 102015209721 This is a schematic diagram showing one embodiment of the apparatus according to the present invention, which has a rail bottom clamp.This is a schematic diagram of one embodiment of the apparatus according to the present invention, which has a pressing member equipped with a rocking joint.This figure shows a further embodiment of a device for fixing and positioning a rail monitoring element, which has a rail bottom clamp.This is a top view of the embodiment shown in Figure 3.These are side views of the embodiments shown in Figures 3 and 4.This figure shows an example of an overhead clamp.This figure shows a further embodiment of the apparatus according to the present invention, which has an overhead clamp.Figure 7 is a schematic perspective view of the pressing member according to the embodiment.This is a schematic diagram of one embodiment of the present invention, which has a rail bottom clamp.Figure 9 is a schematic diagram of the retaining element for the plate-shaped cylinder.This is a schematic diagram of one embodiment of the present invention, which has a magnet as a biasing element.This figure shows a holder equipped with a magnetic biasing element.Figure 12 is a top view of the holder. Figure 1 schematically shows a device 10 for fixing and positioning a rail monitoring element 14. The rail monitoring element 14 is pressed against the rail web 16 of the rail 12. The rail web 16 of the rail 12 is located between the rail head 34 and the rail bottom 18. The device 10 has a biasing element 20. The biasing element 20 may be, for example, a hydraulic cylinder or a pneumatic cylinder. The biasing element 20 exerts force on a pressing member 22 via a piston rod 24. The pressing member 22 has a housing for the rail monitoring element 14. In this embodiment, a holder 36 for the biasing element 20 is fastened to the rail 12, or more precisely to the rail bottom 18 of the rail 12, by a rail bottom clamp 26. The holder 36 is adjustable vertically with respect to the plane on which the rail bottom 18 rests. The vertical adjustment function allows the rail monitoring element 14 to be positioned at a desired height. The biasing element 20 allows the rail monitoring element 14 to be pressed against the rail web 16 with a desired pressure via the pressing member 22. If a pneumatic cylinder is used, the device 10 also includes a bellows 30. The force applied by the biasing element 20 is controlled via the co