Omnibearing light wave detection system for steel rail

Abstract

The utility model discloses a steel rail omni-directional light wave detection system which comprises a laser beam guiding mechanism sliding on the top of a damaged steel rail and a laser simulator arranged in the laser beam guiding mechanism, and laser of the laser simulator is emitted to the damaged position of the damaged steel rail through the laser beam guiding mechanism. The device has the characteristics of simple structure, high practicability, accurate detection and high detection efficiency, and is suitable for large-scale popularization and application in a track flaw detection system.

Description

Technical Field

[0001] This utility model belongs to the field of testing instrument technology, and in particular relates to an all-round optical wave testing system for steel rails. Background Technology

[0002] Currently, the main method for testing all rail weld test blocks is ultrasonic testing. Ultrasonic waves are invisible and are rather abstract in actual operation. It is difficult for personnel who are new to this field to understand the underlying principles and the path of the sound waves. In addition, there are many types of weld test blocks, and depending on the different locations of rail weld flaw detection operations and the different locations of defects on the rail, slight deviations in the probe angle or incorrect probe position selection can easily lead to missed detections by the flaw detection operator, resulting in low detection efficiency and poor detection results. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention aims to provide a rail omnidirectional optical wave detection system. By setting up a laser beam guiding mechanism 2 and a laser simulator 3, the laser beam from the laser simulator 3 can be emitted through the laser beam guiding mechanism 2 to the damaged area of ​​the damaged rail 1 for damage detection. The detection system of the present invention has the characteristics of simple structure, high practicality, accurate detection and high detection efficiency, and is suitable for large-scale application in rail flaw detection systems.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A rail omnidirectional optical wave detection system includes a laser beam guiding mechanism 2 that slides on top of a damaged rail 1 and a laser simulator 3 disposed inside the laser beam guiding mechanism 2. The laser from the laser simulator 3 is emitted to the damaged area of ​​the damaged rail 1 through the laser beam guiding mechanism 2.

[0006] The laser beam guiding mechanism 2 is made of high-transparency acrylic.

[0007] The laser beam guiding mechanism 2 is a straight parallelepiped structure with a beveled surface 21, on which a deep hole 22 is vertically machined; the angle between the beveled surface 21 and the bottom surface 23 of the laser beam guiding mechanism 2 is 37°, 45°, 68.2° or 70°; the laser from the laser simulator 3 is emitted through the bottom surface 23 to the damaged area of ​​the damaged rail 1.

[0008] The deep hole 22 vertically machined on the oblique surface 21 is adapted to the cylinder body of the laser simulator 3.

[0009] The diagonal corner of the oblique cut surface 21 is rounded with a chamfer 24.

[0010] The laser simulator 3 has a DC voltage of 2.8–3.7V, a power of 400mA, and a wavelength of 532nm.

[0011] The laser simulator 3 is powered by two AA batteries.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention, by setting up a laser beam guiding mechanism and a laser simulator, enables the laser from the simulator to be emitted to the damaged area of ​​the rail for damage detection. Furthermore, the laser beam guiding mechanism, designed with four different laser beam angles, can efficiently detect various damages at different locations and angles on the rail. The rounded chamfer design of the laser beam guiding mechanism reduces resistance during its sliding scan on the top of the damaged rail. This invention's detection system features a simple structure, high practicality, accurate detection, and high efficiency, making it suitable for large-scale application in rail flaw detection systems. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of the omnidirectional optical wave detection system for rails provided by this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the laser beam guiding mechanism provided by this utility model. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings.

[0017] A rail omnidirectional optical wave detection system includes a laser beam guiding mechanism 2 that slides on top of a damaged rail 1 and a laser simulator 3. The laser simulator 3 is installed inside the laser beam guiding mechanism 2, and the laser of the laser simulator 3 is emitted to the damaged area of ​​the damaged rail 1 through the laser beam guiding mechanism 2.

[0018] The laser beam guiding mechanism 2 is made of high-transparency acrylic and is a straight parallelepiped structure with a beveled surface 21. A deep hole 22 adapted to the body of the laser simulator 3 is vertically machined on the beveled surface 21. The angle α between the beveled surface 21 and the bottom surface 23 of the laser beam guiding mechanism 2 is 37°, 45°, 68.2° or 70°. The diagonal corners of the beveled surface 21 are rounded with a chamfer 24, which can reduce the resistance when the laser beam guiding mechanism 2 slides and scans on the top of the damaged rail 1. The laser of the laser simulator 3 needs to be emitted to the damaged area of ​​the damaged rail 1 through the bottom surface 23 of the laser beam guiding mechanism 2.

[0019] The laser simulator 3 has a cylindrical structure with a diameter of 12mm and a height of 27mm. Its voltage is DC 2.8-3.7V, power is 400mA, and wavelength is 532nm. The laser simulator 3 is powered by two AA batteries with a DC voltage of 3V. The connecting wire is 1m long, which can ensure sufficient power to scan the damaged areas of the damaged rail 1. The 3V DC power supply drives the green laser to achieve a state that can be observed by the naked eye. When the damaged area is encountered, the light wave is enhanced.

[0020] The damaged sections of the rail 1 include rail head damage, rail web damage, and rail base damage. Rail head damage includes flat-bottomed holes of Φ4*20*26°, Φ4*5*120°, Φ4*40, and Φ3*30, which can be detected using laser beam guiding mechanisms 2 at 68.2° and 70°. Rail web damage includes quadrant screw hole cracks with an inner depth of 3mm at different angles, which can be detected using laser beam guiding mechanisms 2 at 37° and 45°. Rail base damage includes transverse wire-cut cracks at different positions of 5*6, which can be detected using laser beam guiding mechanisms 2 at 68.2°, 45°, and 37°. Horizontal and depth measurements are performed using the start and end points of the laser beam, and the sound path, horizontal distance, and vertical distance of the ultrasonic wave reaching any point are calculated using trigonometric functions.

[0021] The technical solution of this utility model is not limited to the specific embodiments described above. All technical modifications made based on the technical solution of this utility model shall fall within the protection scope of this utility model.

Claims

1. A rail omnidirectional optical wave detection system, characterized in that: The system includes a laser beam guiding mechanism (2) that slides on top of the damaged rail (1) and a laser simulator (3) located inside the laser beam guiding mechanism (2), wherein the laser of the laser simulator (3) is emitted by the laser beam guiding mechanism (2) to the damaged area of ​​the damaged rail (1).

2. The omnidirectional optical wave detection system for rails according to claim 1, characterized in that: The laser beam guiding mechanism (2) is made of high-transparency acrylic.

3. A rail omnidirectional optical wave detection system according to claim 1 or 2, characterized in that: The laser beam guiding mechanism (2) is a straight parallelepiped structure with a beveled surface (21) and a deep hole (22) is vertically machined on the beveled surface (21); the angle between the beveled surface (21) and the bottom surface (23) of the laser beam guiding mechanism (2) is 37°, 45°, 68.2° or 70°; the laser of the laser simulator (3) is emitted through the bottom surface (23) to the damaged area of ​​the damaged rail (1).

4. The omnidirectional optical wave detection system for rails according to claim 3, characterized in that: The deep hole (22) vertically machined on the oblique surface (21) is adapted to the cylinder of the laser simulator (3).

5. The omnidirectional optical wave detection system for rails according to claim 3, characterized in that: The diagonal of the oblique surface (21) is rounded and chamfered (24).

6. The omnidirectional optical wave detection system for rails according to claim 1, characterized in that: The laser simulator (3) has a DC voltage of 2.8 to 3.7V, a power of 400mA, and a wavelength of 532nm.

7. The omnidirectional optical wave detection system for rails according to claim 1, characterized in that: The laser simulator (3) is powered by two AA batteries.

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