Auxiliary device suitable for distinguishing steel rail welding seam and nuclear injury and detection vehicle

Abstract

The utility model discloses an auxiliary device suitable for distinguishing a steel rail welding seam and a nuclear flaw and a detection vehicle. The auxiliary device comprises a mobile terminal, a data acquisition box, an ultrasonic sensor, an area-array camera and an encoder, data output ports of the ultrasonic sensor and the encoder are connected with a data input port of the data acquisition box; and a data output port of the data acquisition box and a data output port of the area-array camera (40) are connected with a data input port of the mobile terminal. The auxiliary device and the detection vehicle disclosed by the utility model can quickly distinguish the steel rail welding seam and the nuclear injury, so that the difficulty and the workload of workers are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of rail detection, in particular to an auxiliary device and a detection vehicle suitable for distinguishing rail welds and core flaws. Background Art

[0002] Rail flaw detection is an important guarantee for detecting whether there is damage inside the rail and ensuring the safety of railway transportation. Weld flaw detection is the top priority of rail flaw detection, because the strength of the weld is relatively weak, and it requires careful identification by flaw detectors and playback personnel. Since the B-scan images of some welds are similar to the B-scan images of the core damage of the rail parent material, it is difficult to distinguish. It is easy to judge a normal weld as a rail core damage, or to judge a rail core damage as a normal weld, resulting in missed detection and missed judgment of core damage, which brings trouble to the detection work. Therefore, an auxiliary equipment that can quickly distinguish welds and core damage is needed to reduce the difficulty and workload of the staff. Utility Model Content

[0003] The technical problem to be solved by the utility model is to solve the problem of lack of auxiliary equipment capable of quickly distinguishing rail welds and core damages.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] An auxiliary device suitable for distinguishing rail welds and core flaws includes a mobile terminal 10, a data acquisition box 20, an ultrasonic sensor 30, an array camera 40 and an encoder 50; the data output ports of the ultrasonic sensor 30 and the encoder 50 are connected to the data input port of the data acquisition box 20; the data output port of the data acquisition box 20 and the data output port of the array camera 40 are connected to the data input port of the mobile terminal 10.

[0006] In an embodiment of the present invention, a pair of ultrasonic sensors 30 are respectively connected to the data acquisition box 20 by means of aerial plugs.

[0007] In one embodiment of the present invention, the encoder 50 is connected to the data acquisition box 20 by means of an aerial plug.

[0008] In an embodiment of the present invention, a pair of array cameras 40 are connected to the network ports of the mobile terminal 10 respectively through network cables.

[0009] In an embodiment of the present invention, the data collection box 20 is connected to the network port of the mobile terminal 10 via a network cable.

[0010] A detection vehicle suitable for distinguishing rail welds and core flaws, using the auxiliary device described above, includes a mobile vehicle body 60; a mobile terminal 10, a data acquisition box 20, an ultrasonic sensor 30, a surface array camera 40 and an encoder 50 are located on the mobile vehicle body 60; when working, the mobile vehicle body 60 moves along the rail.

[0011] In one embodiment of the present invention, a pair of ultrasonic sensors 30 are respectively located on both sides of the moving vehicle body 60, between the front and rear wheels; when the moving vehicle body 60 is moving for detection, the ultrasonic sensors 30 are driven to roll on the rails.

[0012] In one embodiment of the present invention, a pair of array cameras 40 are fixedly located at the bottom of the moving vehicle body 60 , and the camera areas of the pair of array cameras 40 are respectively facing the rails on both sides.

[0013] In one embodiment of the present invention, the encoder 50 is coaxially mounted with the connecting shaft of the front wheel of the moving vehicle body 60 .

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the weld is visually observable, and the core damage is the internal crack of the rail, which is generally invisible to the eye, and their B-scan images are similar. During the detection process, the B-scan display of the core damage is found, and the area array camera is triggered to capture the appearance of the rail. If the weld is photographed, then the B-scan display of the core damage is not a core damage, but a display of the weld. On the contrary, if the image captured by the area array camera at this time is not a weld, then the core damage display at this time is a real core damage. The images captured by the area array camera can be quickly distinguished by operators and playback personnel by watching the camera images. It is intuitive and effective, and can quickly distinguish between rail welds and core damage, reducing the difficulty and workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic diagram of an auxiliary device for distinguishing rail welds and core flaws according to an embodiment of the present invention.

[0016] Figure 2 The present invention is a schematic diagram of an inspection vehicle suitable for distinguishing rail welds and core flaws according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the inspection vehicle from another perspective of an embodiment of the utility model. DETAILED DESCRIPTION

[0018] In order to facilitate those skilled in the art to understand the technical solution of the utility model, the technical solution of the utility model is further explained in conjunction with the drawings in the specification.

[0019] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] See also Figure 1 As shown, the utility model provides an auxiliary device suitable for distinguishing rail welds and core defects, including a mobile terminal 10, a data acquisition box 20, an ultrasonic sensor 30, an array camera 40 and an encoder 50. The data output ports of the ultrasonic sensor 30 and the encoder 50 are connected to the data input port of the data acquisition box 20; the data output port of the data acquisition box 20 and the data output port of the array camera 40 are connected to the data input port of the mobile terminal 10.

[0021] In one embodiment of the utility model, a pair of ultrasonic sensors 30 are respectively connected to the data acquisition box 20 by means of an aerial plug. And the encoder 50 is connected to the data acquisition box 20 by means of an aerial plug. The reference numeral A in the figure represents an aerial plug. A pair of array cameras 40 are respectively connected to the network port of the mobile terminal 10 by means of a network cable, and the captured images are transmitted to the mobile terminal 10. And the data acquisition box 20 is connected to the network port of the mobile terminal 10 by means of a network cable, and the collected data of the two ultrasonic sensors 30 and the signal of the encoder 50 are transmitted to the mobile terminal 10. Among them, the array camera 40 captures the appearance of the rail, and the ultrasonic sensor 30 captures the B-scan image of the rail. Specifically, in this embodiment, the mobile terminal 10 is a computer, and the data acquisition box 20, the ultrasonic sensor 30, the array camera 40 and the encoder 50 are existing products on the market.

[0022] See also Figures 1 to 3 As shown, the utility model also provides a detection vehicle suitable for distinguishing rail welds and core damage, which uses the above-mentioned auxiliary device suitable for distinguishing rail welds and core damage, including a mobile vehicle body 60. Among them, the mobile terminal 10, the data acquisition box 20, the ultrasonic sensor 30, the area array camera 40 and the encoder 50 are located on the mobile vehicle body 60; when working, the mobile vehicle body 60 moves along the rail.

[0023] In one embodiment of the utility model, a pair of ultrasonic sensors 30 are respectively located on both sides of the mobile body 60, between the front and rear wheels. When the mobile body 60 is moving for detection, the ultrasonic sensor 30 is driven to roll on the rail. When the ultrasonic sensor 30 is performing B-scanning operation, both the weld and the damage wave have a certain length, so the ultrasonic signal needs a certain time to complete the scanning, which is reflected in the B-scan image as the length of the diagonal line. When the detection software integrated on the mobile terminal 10 is operating, it will analyze and calculate the length of the diagonal line in real time. When a certain length is met, such as when the length of the diagonal line is greater than 5 ultrasonic pulse lengths, the suspicious image alarm box is automatically selected in the compressed image display window, and the actual B-scan image is displayed in the enlarged pop-up window.

[0024] In one embodiment of the utility model, a pair of array cameras 40 are fixedly located at the bottom of a mobile vehicle 60, and the camera areas of the pair of array cameras 40 are respectively facing the rails on both sides. In order to record the image of the rails, two array cameras 40 are installed at the bottom of the vehicle to respectively shoot the inner side of the left and right rails. The array camera 40 uses a fixed frequency trigger, such as a frequency of 60HZ, to continuously collect rail images and store them in a linked list of fixed length. The latest image captured each time is stored at the head of the linked list, and the last linked list node at the tail is deleted. Each linked list node requires a number, which is the ultrasonic pulse count of the ultrasonic sensor 30 at that moment.

[0025] In one embodiment of the utility model, the encoder 50 is coaxially installed with the connecting shaft of the front wheel of the mobile body 60. When the wheel of the mobile body 60 travels one circle, the encoder 50 rotates 360 degrees. Every time the encoder rotates 360 degrees, a fixed number of pulse trigger signals are given outwardly, which serves as an external trigger for the ultrasonic sensor 30 to start transmitting, receiving and information processing. Since the encoder 50 outputs pulse signals uniformly during rotation, that is, the pulse signals output per unit distance or angle of rotation are fixed, the number of rotations of the encoder 50 is calculated by counting the external triggers, and then the number of rotations of the wheels of the mobile body 60 and the travel distance can be obtained. Therefore, each time the encoder 50 is triggered, the corresponding relationship between the flaw detection data information and a unique encoder position can be known with certainty.

[0026] See also Figures 1 to 3As shown, in one embodiment of the present invention, since the weld is visually observable, the core damage is a crack inside the rail, which is generally invisible to the eye, and their B-scan images are similar. However, if we find the B-scan display of the core damage during the detection process, and trigger the array camera 40 to shoot the appearance of the rail, if the weld is photographed, then the B-scan display of the core damage is not the core damage, but the display of the weld. On the contrary, if the image taken by the array camera 40 at this time is not a weld, then the core damage display at this time is a real core damage.

[0027] See also Figures 1 to 3 As shown, in one embodiment of the utility model, when the ultrasonic sensor 30B scans, every time an alarm box is generated on the display of the mobile terminal 10, the ultrasonic pulse count at this time is recorded, and based on this count value, the linked list node closest to this count value is searched in the image linked list, and the corresponding image data is called out, displayed on the mobile terminal 10, and stored in the data acquisition box 20.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] The above-described embodiments merely represent implementation methods of the utility model, and the protection scope of the utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of the utility model, and these all fall within the protection scope of the utility model.

Claims

1. An auxiliary device for distinguishing rail welds from core defects, characterized in that: The invention comprises a mobile terminal (10), a data acquisition box (20), an ultrasonic sensor (30), an array camera (40) and an encoder (50); the data output ports of the ultrasonic sensor (30) and the encoder (50) are connected to the data input port of the data acquisition box (20); and the data output port of the data acquisition box (20) and the data output port of the array camera (40) are connected to the data input port of the mobile terminal (10).

2. The auxiliary device for distinguishing rail welds from core flaws according to claim 1, characterized in that: A pair of ultrasonic sensors (30) are respectively connected to the data acquisition box (20) by means of aerial plugs.

3. The auxiliary device for distinguishing rail welds from core flaws according to claim 1, characterized in that: The encoder (50) is connected to the data acquisition box (20) by means of an aerial plug.

4. The auxiliary device for distinguishing rail welds from core flaws according to claim 1, characterized in that: A pair of array cameras (40) are respectively connected to the network port of the mobile terminal (10) via network cables.

5. The auxiliary device for distinguishing rail welds from core flaws according to claim 1, characterized in that: The data collection box (20) is connected to the network port of the mobile terminal (10) via a network cable.

6. A detection vehicle suitable for distinguishing rail welds and core flaws, characterized in that: The auxiliary device applied to any one of claims 1 to 5 comprises a mobile body (60); a mobile terminal (10), a data acquisition box (20), an ultrasonic sensor (30), an array camera (40) and an encoder (50) are located on the mobile body (60); when working, the mobile body (60) moves along the rails; wherein, a pair of ultrasonic sensors (30) are respectively located on both sides of the mobile body (60), between the front and rear wheels; when the mobile body (60) detects walking, it drives the ultrasonic sensor (30) to roll on the rails, and a pair of array cameras (40) are fixed on the bottom of the mobile body (60), and the camera areas of the pair of array cameras (40) are respectively facing the rails on both sides.

7. The inspection vehicle for distinguishing rail welds from core flaws according to claim 6, characterized in that: The encoder (50) is coaxially mounted with the connecting shaft of the front wheel of the mobile vehicle body (60).

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