Device for detecting internal defects of track board in dynamic full-coverage manner

Abstract

The utility model relates to the technical field of track semi-defect detection, and discloses a dynamic full-coverage device for detecting internal defects of a track plate, which comprises a detection vehicle, the signal analysis device is arranged on the detection vehicle through a first support and is in signal connection with an ultrasonic signal excitation source and an ultrasonic phased array sensor which are arranged on the detection vehicle, and the ultrasonic phased array sensor is located between the detection vehicle and the track plate. The distance between the ultrasonic phased array sensor and the parallel side length of the steel rail is the same as the distance between the central points of two parallel and adjacent concrete sleepers on the track plate, and the distance between the ultrasonic phased array sensor and the vertical side length of the steel rail is the same as the distance between the inner edges of the two parallel concrete sleepers on the track plate; according to the utility model, the full-coverage defect detection of the track plate can be realized through the ultrasonic phased array sensor, the internal defect of the ballastless track can be efficiently detected in real time, and powerful support can be provided for subsequent track maintenance work.

Description

Technical Field

[0001] The utility model relates to the technical field of track plate defect detection, in particular to a device for dynamically and fully covering the detection of internal defects of a track plate. Background Art

[0002] With the formation and development of my country's rail transit network, the rail transit industry has entered a stage where both construction and operation and maintenance are equally important. How to scientifically maintain such a large-scale operating line and ensure the stability and reliability of infrastructure so that rail transit can operate safely in the long term is a problem that must be faced and solved in the current stage of rail transit development. Track slab defects are closely related to factors such as roadbed filling, train load, construction control, and operating environment. In addition, they are exposed to the natural environment for a long time, and are subject to the impact of train loads, temperature changes, and water damage. Defects such as degassing are prone to occur between the mortar layer and the track slab, and between the mortar layer and the base plate. The occurrence of degassing defects seriously affects the safety of the train.

[0003] At present, conventional nondestructive testing methods include ultrasonic testing, X-ray nondestructive testing, and eddy current nondestructive testing. X-ray nondestructive testing is limited by the fact that the material itself must have density differences. For materials with unclear density differences, the analysis and imaging are not accurate. It is also limited by the overlapping and hiding of internal images. It requires multiple multi-angle shooting and professional analysis, and the testing cost is high. It has ionizing radiation hazards to the human body. Eddy current nondestructive testing requires that the material itself must be conductive. It is only suitable for detecting metal surface defects. It requires professional personnel to analyze and judge, customize the testing plan, and the testing cost is high. However, ultrasonic testing has no damaging effect on the performance of the object being tested, and can accurately image the internal structure of opaque materials. It has a wide range of applications and is suitable for metals, non-metals, composite materials and other materials.

[0004] Therefore, there is an urgent need for a device that can detect internal defects of the track slab of a ballastless track based on ultrasonic testing. Utility Model Content

[0005] The utility model aims to provide a device for dynamic full coverage detection of internal defects of track plates, aiming to solve or improve at least one of the above technical problems.

[0006] To achieve the above-mentioned purpose, the utility model provides the following solution: The utility model provides a device for dynamic full coverage detection of internal defects of track plates, comprising:

[0007] An inspection vehicle, the inspection vehicle is used to travel on a pair of rails of the track plate;

[0008] A signal analysis device, wherein the signal analysis device is arranged on the inspection vehicle through a first bracket, the signal analysis device is signal-connected to an ultrasonic signal excitation source and an ultrasonic phased array sensor arranged on the inspection vehicle, the ultrasonic signal excitation source and the ultrasonic phased array sensor are signal-connected, the ultrasonic phased array sensor is located between the inspection vehicle and the track plate, the distance between the ultrasonic phased array sensor and the side length parallel to the rail is the same as the spacing between the center points of two parallel and adjacent concrete sleepers on the track plate, and the distance between the ultrasonic phased array sensor and the side length perpendicular to the rail is the same as the spacing between the inner edges of two side-by-side concrete sleepers on the track plate.

[0009] Optionally, an electric telescopic rod is provided between the ultrasonic phased array sensor and the detection vehicle, and a signal connection is established between the electric telescopic rod and the signal analysis device.

[0010] Optionally, a second bracket is provided between the electric telescopic rod and the inspection vehicle.

[0011] Optionally, a distance sensor is provided at the front end of the detection vehicle, and a signal connection is established between the distance sensor and the signal analysis device.

[0012] Optionally, a seat is provided on the detection vehicle, and the seat corresponds to the position of the signal analysis device.

[0013] Optionally, movable control rods for controlling the movement of the inspection vehicle are provided on both sides of the seat.

[0014] Optionally, a wireless network module is provided on the detection vehicle, and a signal connection is established between the wireless network module and the signal analysis device.

[0015] Optionally, the detection vehicle is provided with a power supply.

[0016] The utility model discloses the following technical effects: a detection vehicle travels along a track plate on a pair of rails, and a signal analysis device controls an ultrasonic signal excitation source so that an ultrasonic phased array sensor is controlled by the ultrasonic signal excitation source to emit ultrasonic waves to the track plate, generating an ultrasonic echo signal, receiving the ultrasonic echo signal through the ultrasonic phased array sensor, and transmitting the ultrasonic echo signal to the signal analysis device for defect information processing, and by setting the side length of the ultrasonic phased array sensor to adapt to the track plate structure, it is possible to achieve full coverage defect detection of the track plate through the ultrasonic phased array sensor, achieve efficient and real-time detection of internal defects of ballastless track, provide timely warning and strong guarantee for the safe operation of rail transit, provide strong support for subsequent track maintenance work, save manpower, and also save detection time, meeting the characteristics of short window time for rail transit inspection and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the utility model and the track plate structure;

[0020] Figure 3 This is a schematic diagram of the structure of the ultrasonic phased array sensor of the utility model.

[0021] In the figure: 1. signal analysis device; 2. wireless network module; 3. mobile control lever; 4. seat; 5. power supply; 6. second bracket; 7. ultrasonic signal excitation source; 8. first bracket; 9. distance sensor; 10. electric telescopic rod; 11. ultrasonic phased array sensor; 12. track plate; 13. rail; 14. concrete sleeper; 15. inspection vehicle. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figure 1-Figure 3 The utility model provides a device for dynamic full coverage detection of internal defects of track plates, comprising:

[0025] An inspection vehicle 15, the inspection vehicle 15 is used to travel on a pair of rails 13 of the track plate 12;

[0026] A signal analysis device 1, the signal analysis device 1 is arranged on the detection vehicle 15 through a first bracket 8, the signal analysis device 1 is signal-connected to an ultrasonic signal excitation source 7 and an ultrasonic phased array sensor 11 arranged on the detection vehicle 15, the ultrasonic signal excitation source 7 and the ultrasonic phased array sensor 11 are signal-connected, the ultrasonic phased array sensor 11 is located between the detection vehicle 15 and the track plate 12, the distance between the side length of the ultrasonic phased array sensor 11 parallel to the rail 13 is the same as the spacing between the center points of two parallel and adjacent concrete sleepers 14 on the track plate 12, and the distance between the side length of the ultrasonic phased array sensor 11 perpendicular to the rail 13 is the same as the spacing between the inner edges of two side-by-side concrete sleepers 14 on the track plate 12.

[0027] The detection vehicle 15 travels along the track plate 12 on a pair of rails 13, and the signal analysis device 1 controls the ultrasonic signal excitation source 7 so that the ultrasonic phased array array sensor 11 is controlled by the ultrasonic signal excitation source 7 to emit ultrasonic waves to the track plate 12, generating an ultrasonic echo signal, and the ultrasonic phased array array sensor 11 receives the ultrasonic echo signal and transmits the ultrasonic echo signal to the signal analysis device 1 for defect information processing. By setting the side length of the ultrasonic phased array array sensor 11 to adapt to the structure of the track plate 12, full coverage defect detection of the track plate 12 can be achieved by the ultrasonic phased array array sensor 11.

[0028] Furthermore, the signal analysis device 1 includes a PC and uses commercial signal processing software (eg, MATLAB software).

[0029] A further optimization scheme is that an electric telescopic rod 10 is arranged between the ultrasonic phased array array sensor 11 and the inspection vehicle 15. The electric telescopic rod 10 is signal-connected to the signal analysis device 1. The electric telescopic rod 10 controls the up and down movement of the ultrasonic phased array array sensor 11, which can not only change the position of the ultrasonic phased array array sensor 11 when it detects defects on the track plate 12, but also avoid friction damage between the ultrasonic phased array array sensor 11 and the track plate 12 during the driving of the inspection vehicle.

[0030] According to a further optimized solution, a second bracket 6 is provided between the electric telescopic rod 10 and the detection vehicle 15 , and the second bracket 6 is used to keep the ultrasonic phased array sensor 11 and the track plate 12 in a horizontal state.

[0031] To further optimize the solution, a distance sensor 9 is provided at the front end of the inspection vehicle 15, and a signal connection is established between the distance sensor 9 and the signal analysis device 1. The distance sensor 9 can mark the position of the track plate 12 defect for the inspection vehicle 15 in real time, and record the position of the damaged part of the track plate 12 in real time through the signal analysis device 1.

[0032] A further optimized solution is that a seat 4 is provided on the inspection vehicle 15, and the position of the seat 4 corresponds to that of the signal analysis device 1; movable control levers 3 for controlling the movement of the inspection vehicle 15 are provided on both sides of the seat 4, and the operator can sit on the seat 4 to directly adjust the signal analysis device 1, and by moving the control lever 3, the inspection vehicle 15 can be controlled to move on the line section where the rail plate 12 defect detection is required.

[0033] To further optimize the solution, a wireless network module 2 is provided on the detection vehicle 15, and a signal connection is established between the wireless network module 2 and the signal analysis device 1, and the wireless network module 2 provides a network environment for real-time track plate defect detection.

[0034] To further optimize the solution, a power supply 5 is provided on the inspection vehicle 15. The power supply 5 can be a commercially available product to supply power to the equipment on the inspection vehicle 15 to ensure operation.

[0035] Directions:

[0036] A seat 4 is installed on a detection vehicle 15, a movable control rod 3 is installed on the left and right sides of the seat 4, a signal analysis device 1 is installed in front of the seat 4, a wireless network module 2 is installed on the detection vehicle 15, an ultrasonic signal excitation source 7 is installed on the detection vehicle 15, a distance sensor 9 is installed in front of the detection vehicle 15 and connected to the signal analysis device 1, a power supply 5 is installed behind the seat 4, a second bracket 6 is installed under the detection vehicle 15, an electric telescopic rod 10 is installed under the second bracket 6, an ultrasonic phased array array sensor 11 is installed under the electric telescopic rod 10, a transmitting end signal of the ultrasonic phased array array sensor 11 is connected to the ultrasonic signal excitation source 7, a receiving end signal of the ultrasonic phased array array sensor 11 is connected to the signal analysis device 1, and the electric telescopic rod 10 is connected to the signal analysis device 1;

[0037] The inspection vehicle 15 is driven to the top of the track plate 12 to be inspected, and the inspection vehicle is controlled to drive on the rail 13 by moving the control rod 3. As the inspection vehicle 15 drives, the ultrasonic phased array sensor 11 is controlled by the ultrasonic signal excitation source 7 to emit ultrasonic waves to the track plate 12, generating an ultrasonic echo signal. The ultrasonic echo signal is received by the ultrasonic phased array sensor 11, and the ultrasonic echo signal is transmitted to the signal analysis device 1. The PC arranged inside the signal analysis device 1 stores and processes the echo signal, and then the internal image of the track plate 12 in the inspection area can be obtained by using the existing imaging technology. By comparing the obtained image with the standard image, it can be determined whether there is a defect inside the track plate 12. If there is a defect, the position information of the defect is saved in the signal analysis device 1 through the distance sensor 9, thereby completing the automatic detection of the internal defect of the track plate 12.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A device for dynamic full coverage detection of internal defects of track slabs, It is characterized in that include: An inspection vehicle (15), the inspection vehicle (15) being used to travel on a pair of steel rails (13) of a track plate (12); A signal analysis device (1), wherein the signal analysis device (1) is arranged on the detection vehicle (15) through a first bracket (8), the signal analysis device (1) is signal-connected to an ultrasonic signal excitation source (7) and an ultrasonic phased array sensor (11) arranged on the detection vehicle (15), the ultrasonic signal excitation source (7) and the ultrasonic phased array sensor (11) are signal-connected, the ultrasonic phased array sensor (11) is located between the detection vehicle (15) and the track plate (12), the distance between the ultrasonic phased array sensor (11) and the side length parallel to the rail (13) is the same as the spacing between the center points of two adjacent concrete sleepers (14) arranged side by side on the track plate (12), and the distance between the ultrasonic phased array sensor (11) and the side length perpendicular to the rail (13) is the same as the spacing between the inner edges of two adjacent concrete sleepers (14) arranged side by side on the track plate (12).

2. The device for dynamic full coverage detection of internal defects of track slabs according to claim 1, Features: An electric telescopic rod (10) is provided between the ultrasonic phased array sensor (11) and the detection vehicle (15), and a signal connection is established between the electric telescopic rod (10) and the signal analysis device (1).

3. The device for dynamic full coverage detection of internal defects of track slabs according to claim 2, Features: A second bracket (6) is provided between the electric telescopic rod (10) and the inspection vehicle (15).

4. The device for dynamic full coverage detection of internal defects of track slabs according to claim 1, Features: A distance sensor (9) is provided at the front end of the detection vehicle (15), and a signal connection is established between the distance sensor (9) and the signal analysis device (1).

5. The device for dynamic full coverage detection of internal defects of track slabs according to claim 1, Features: The detection vehicle (15) is provided with a seat (4), and the seat (4) corresponds to the position of the signal analysis device (1).

6. The device for dynamic full coverage detection of internal defects of track slabs according to claim 5, Features: Movable control rods (3) for controlling the movement of the inspection vehicle (15) are arranged on both sides of the seat (4).

7. The device for dynamic full coverage detection of internal defects of track slabs according to claim 1, Features: The detection vehicle (15) is provided with a wireless network module (2), and a signal connection is established between the wireless network module (2) and the signal analysis device (1).

8. The device for dynamic full coverage detection of internal defects of track slabs according to claim 1, Features: The detection vehicle (15) is provided with a power supply (5).

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