Ultrasonic eddy current integrated double-track flaw detector and detection method

Abstract

The invention discloses an ultrasonic eddy current integrated double-track flaw detector and a detection method. The ultrasonic eddy current integrated double-track flaw detector comprises a walking trolley and two mounting brackets, the device comprises a mounting platform, two mounting brackets, an ultrasonic data acquisition processor, a first ultrasonic detection wheel group, a first eddy current probe group, a second ultrasonic detection wheel group, a second eddy current probe group, an eddy current data acquisition processor, an encoder and an upper computer, the first ultrasonic detection wheel group and the first eddy current probe group are arranged on one mounting bracket, and the second ultrasonic detection wheel group and the second eddy current probe group are arranged on the other mounting bracket. According to the ultrasonic eddy current integrated double-track flaw detector and the detection method provided by the invention, ultrasonic detection can be simultaneously carried out on internal flaws and vertical flaws of a steel rail head, a rail waist and an extension part of the steel rail, eddy current detection can be simultaneously carried out on surface cracks of a steel rail tread, and the eddy current detection speed and the detection speed of the vertical flaws of a welding seam are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flaw detection, and more specifically, to an ultrasonic eddy current integrated double-track flaw detector and a detection method. Background Art

[0002] my country's railway engineering system uses ultrasonic testing as the main non-destructive testing technology, supplemented by eddy current, magnetic powder and other surface testing technologies. Rail ultrasonic flaw detection equipment has formed a model of rail flaw detection vehicles (80km / h), double-track flaw detectors (15km / h), single-track flaw detectors (3km / h), high, medium and low speed adaptation, and a combination of large, medium and small equipment. Rail eddy current flaw detection equipment mainly includes single-track and double-track hand-pushed rail eddy current detectors.

[0003] Rail flaw detectors are fast and efficient, and are mainly used for testing rail parent materials in sections, but the damage detection rate is relatively low. Double-track flaw detectors (15km / h) are mainly suitable for mainline rails, with high detection efficiency and high damage detection rate. However, double-track flaw detectors are ultrasonic flaw detection equipment and do not have the ability to detect surface damage with eddy current.

[0004] In the existing technology, single-track and double-track rail eddy current detectors can detect cracks, dents, abrasions and other damages on the rail tread wheel-rail contact surface, and provide equipment support for the detection before and after rail grinding. The multi-channel array eddy current detection technology can achieve a single-side coverage width of 48mm, but the detection speed is only 4km / h, and the detection efficiency is low; the single-track flaw detector uses a sliding shoe probe mode, the flaw detection sensitivity is adjustable in real time, the coupling is controllable, and the damage detection rate is high, but the detection speed is slow, the detection efficiency is low, and the personnel requirements are large. These flaw detection equipments do not have the ability to detect vertical cracks in welds, nor can they detect cracks on the surface of rail treads. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose an ultrasonic eddy current integrated double-rail flaw detector and a detection method, so as to simultaneously perform ultrasonic detection on the internal damage and vertical damage of the rail head, rail waist and its extended parts, and perform eddy current detection on the surface cracks of the rail tread, thereby improving the detection speed of eddy current detection and vertical damage of welds.

[0006] Based on the above-mentioned purpose, the present invention provides an ultrasonic eddy current integrated double-track flaw detector, including a traveling vehicle, two mounting brackets, an ultrasonic data acquisition processor, a first ultrasonic wheel probe group, a first eddy current probe group, a second ultrasonic wheel probe group, a second eddy current probe group, an eddy current data acquisition processor, an encoder and a host computer, wherein: the traveling vehicle includes a mounting platform and four wheels, the ultrasonic data acquisition processor, the eddy current data acquisition processor and the host computer are all mounted on the mounting platform, and the encoder is mounted on the axle of one of the wheels; the two mounting brackets are relatively arranged on both sides of the mounting platform, and the first ultrasonic wheel probe group and the first eddy current probe group are arranged along the length direction of the left rail. The first ultrasonic wheel probe group and the second eddy current probe group are arranged along the length direction of the right rail and are installed on another mounting bracket, and are used to fit the tread of the right rail; the ultrasonic data acquisition processor and the eddy current data acquisition processor are both communicatively connected to the host computer, the first ultrasonic wheel probe group and the second ultrasonic wheel probe group are both communicatively connected to the ultrasonic data acquisition processor, the first eddy current probe group and the second eddy current probe group are both communicatively connected to the eddy current data acquisition processor, and the encoder is communicatively connected to the ultrasonic data acquisition processor and the eddy current data acquisition processor.

[0007] Optionally, the first ultrasonic probe wheel group includes a first single-probe probe wheel and three first double-probe probe wheels, the first single-probe probe wheel is used to detect internal damage to the parent material of the rail head, rail waist and extended parts of the left rail, and the three first double-probe probe wheels are used to detect vertical defects of the rail head, rail waist and extended parts of the left rail; the second ultrasonic probe wheel group includes a second single-probe probe wheel and three second double-probe probe wheels, the second single-probe probe wheel is used to detect internal damage to the parent material of the rail head, rail waist and extended parts of the right rail, and the three second double-probe probe wheels are used to detect vertical defects of the rail head, rail waist and extended parts of the right rail.

[0008] Optionally, the first single-probe method detection wheel includes six first 70° chips, two first 37° chips, one first 0° chip and a first detection wheel, and the six first 70° chips, two first 37° chips and one first 0° chip are all installed in the first detection wheel; the three first double-probe method detection wheels include 10 first 45° chips and three second detection wheels, and the 10 first 45° chips are respectively installed in the three second detection wheels in a 4-3-3 distribution; the second single-probe method detection wheel includes six second 70° chips, two second 37° chips, one second 0° chip and a third detection wheel, and the six second 70° chips, two second 37° chips and one second 0° chip are all installed in the third detection wheel; the three second double-probe method detection wheels include 10 second 45° chips and three fourth detection wheels, and the 10 second 45° chips are respectively installed in the three fourth detection wheels in a 4-3-3 distribution.

[0009] Optionally, the first eddy current probe group includes eight first eddy current probes, which are placed on the tread of the left rail in two rows and staggered in front and back arrangements; and the second eddy current probe group includes eight second eddy current probes, which are placed on the tread of the right rail in two rows and staggered in front and back arrangements.

[0010] Optionally, a signal amplifier is further included, and the encoder is communicatively connected to the ultrasonic data acquisition processor and the eddy current data acquisition processor via the signal amplifier.

[0011] Optionally, the host computer includes a display interface.

[0012] Based on the same inventive concept, the present invention also provides a detection method for an ultrasonic eddy current integrated double-track flaw detector, using the ultrasonic eddy current integrated double-track flaw detector described in any of the above items to perform flaw detection on the left and right rails, including the following steps: Step 1, installing an ultrasonic data acquisition processor, an eddy current data acquisition processor and a host computer on a mounting platform, installing an encoder on the axle of one of the wheels, installing two mounting brackets on both sides of the mounting platform in a relative manner, and arranging a first ultrasonic wheel probe group and a first eddy current probe group along the length direction of the left rail on a mounting bracket. The first ultrasonic wheel probe group and the second eddy current probe group are arranged on another mounting bracket along the length direction of the right rail and are used to be placed on the tread of the right rail; the second ultrasonic wheel probe group and the second eddy current probe group are arranged on another mounting bracket along the length direction of the right rail and are used to be placed on the tread of the right rail; the second step is to connect the ultrasonic data acquisition processor and the eddy current data acquisition processor to the upper computer for communication, connect the first ultrasonic wheel probe group and the second ultrasonic wheel probe group to the ultrasonic data acquisition processor for communication, connect the first eddy current probe group and the second eddy current probe group to the eddy current data acquisition processor for communication, and connect the encoder to the ultrasonic data acquisition processor and the eddy current data acquisition processor The processors are all connected in communication, confirming that the first ultrasonic wheel probe group and the first eddy current probe group are in contact with the tread of the left rail, and confirming that the second ultrasonic wheel probe group and the second eddy current probe group are in contact with the tread of the right rail; Step three, turn on the power, start the host computer, set the detection information and parameters, and start the detection. As the traveling vehicle starts to move, the encoder is triggered to generate a pulse signal. The pulse signal of the encoder is amplified by the signal amplifier, and then divided into two signals and sent to the ultrasonic flaw detection data acquisition processor and the eddy current flaw detection data acquisition processor synchronously. The pulse signal triggers the first ultrasonic wheel probe group, the second ultrasonic wheel probe group, and the first The eddy current probe group and the second eddy current probe group start to collect detection signals, and at the same time, synchronously encode and position calibrate the flaw detection data; Step 4, the ultrasonic data acquisition processor and the eddy current data acquisition processor upload the flaw detection data processed by the encoder number to the host computer, and the host computer processes the data with the encoder number sent by the ultrasonic data acquisition processor and the eddy current data acquisition processor, and analyzes it, so as to perform ultrasonic detection on the internal damage and vertical damage of the rail head, rail waist and extended parts of the left and right rails, and perform eddy current detection on the surface cracks of the rail tread.

[0013] The ultrasonic eddy current integrated double-track flaw detector and detection method provided by the present invention include a traveling vehicle, two mounting brackets, an ultrasonic data acquisition processor, a first ultrasonic wheel probe group, a first eddy current probe group, a second ultrasonic wheel probe group, a second eddy current probe group, an eddy current data acquisition processor, an encoder and a host computer. First, the ultrasonic data acquisition processor, the eddy current data acquisition processor and the host computer are all installed on a mounting platform, and the encoder is installed on the axle of one of the wheels; the two mounting brackets are relatively installed on both sides of the mounting platform, the first ultrasonic wheel probe group and the first eddy current probe group are arranged along the length direction of the left rail on one mounting bracket, and the second ultrasonic wheel probe group and the second eddy current probe group are arranged along the length direction of the right rail on the other mounting bracket; then, the first ultrasonic wheel probe group and the second eddy current probe group are arranged along the length direction of the right rail on the other mounting bracket; The ultrasonic probe wheel group and the first eddy current probe group are fitted to the tread of the left rail, the second ultrasonic probe wheel group and the second eddy current probe group are fitted to the tread of the right rail, the ultrasonic data acquisition processor and the eddy current data acquisition processor are both communicatively connected to the host computer, the first ultrasonic probe wheel group and the second ultrasonic probe wheel group are both communicatively connected to the ultrasonic data acquisition processor, the first eddy current probe group and the second eddy current probe group are both communicatively connected to the eddy current data acquisition processor, and the encoder is communicatively connected to the ultrasonic data acquisition processor and the eddy current data acquisition processor; finally, the host computer is started, and the detection is started after the detection information and parameters are set, so as to perform ultrasonic detection on the internal damage and vertical damage of the rail head, rail waist and extended parts of the left and right rails, and perform eddy current detection on the surface cracks of the rail tread, thereby improving the detection speed of eddy current detection and vertical damage of welds. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention, wherein:

[0015] Figure 1 It is a structural schematic diagram of an ultrasonic eddy current integrated double-track flaw detector according to an embodiment of the present invention;

[0016] Figure 2 A schematic diagram of a display interface in an ultrasonic eddy current integrated dual-track flaw detector according to an embodiment of the present invention;

[0017] Figure 3 A schematic diagram of communication connections among a host computer, an ultrasonic data acquisition processor, a first ultrasonic probe wheel group, a first eddy current probe group, a second ultrasonic probe wheel group, a second eddy current probe group, an eddy current data acquisition processor, and an encoder in an ultrasonic eddy current integrated dual-track flaw detector according to an embodiment of the present invention;

[0018] Figure 4It is a schematic structural diagram of the first single-probe method detection wheel in the ultrasonic eddy current integrated double-rail flaw detector of one embodiment of the present invention when detecting the left rail;

[0019] Figure 5 It is a schematic structural diagram of the first double-probe method of scanning the left rail in the ultrasonic eddy current integrated double-rail flaw detector according to one embodiment of the present invention;

[0020] Figure 6 It is a schematic structural diagram of a first eddy current probe group in an ultrasonic eddy current integrated dual-track flaw detector according to an embodiment of the present invention;

[0021] Figure 7 The present invention is a flowchart of a detection method of an ultrasonic eddy current integrated dual-track flaw detector according to an embodiment of the present invention.

[0022] Description of reference numerals:

[0023] 1: traveling carriage; 2: mounting bracket; 3: ultrasonic data acquisition processor; 4: first ultrasonic wheel probe group; 5: first eddy current probe group; 6: encoder; 7: host computer; 8: first single probe; 9: left rail; 10: first double probe method probe; 11: first eddy current probe; 12: eddy current data acquisition processor; 13: right rail. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the embodiments. The same components are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] like Figure 1 and Figure 3As shown, the ultrasonic eddy current integrated double-track flaw detector provided by the present invention includes a traveling vehicle 1, two mounting brackets 2, an ultrasonic data acquisition processor 3, a first ultrasonic wheel probe group 4, a first eddy current probe 11 group 5, a second ultrasonic wheel probe group, a second eddy current probe group, an eddy current data acquisition processor 12, an encoder 6 and a host computer 7, wherein: the traveling vehicle 1 includes a mounting platform and four wheels, the ultrasonic data acquisition processor 3, the eddy current data acquisition processor 12 and the host computer 7 are all mounted on the mounting platform, and the encoder 6 is mounted on the axle of one of the wheels; the two mounting brackets 2 are relatively mounted on both sides of the mounting platform, the first ultrasonic wheel probe group 4, the first eddy current probe 11 group 5 are arranged along the length of the left rail 9 The first ultrasonic wheel probe group 4 and the second ultrasonic wheel probe group 12 are both connected to the upper computer 7 for communication, the first eddy current probe group 11 and the second eddy current probe group 12 are both connected to the upper computer 7 for communication, and the encoder 6 is both connected to the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12 for communication.

[0026] The ultrasonic eddy current integrated double-track flaw detector provided by the present invention comprises a traveling vehicle 1, two mounting brackets 2, an ultrasonic data acquisition processor 3, a first ultrasonic wheel detection group 4, a first eddy current probe 11 group 5, a second ultrasonic wheel detection group, a second eddy current probe group, an eddy current data acquisition processor 12, an encoder 6 and a host computer 7. First, the ultrasonic data acquisition processor 3, the eddy current data acquisition processor 12 and the host computer 7 are all installed on a mounting platform, and the encoder 6 is installed on the axle of one of the wheels; the two mounting brackets 2 are relatively installed on both sides of the mounting platform, the first ultrasonic wheel detection group 4 and the first eddy current probe 11 group 5 are arranged along the length direction of the left rail 9 on one mounting bracket 2, and the second ultrasonic wheel detection group and the second eddy current probe group are arranged along the length direction of the right rail 13 on the other mounting bracket 2; then, the first ultrasonic wheel detection group 4, the first The eddy current probe group 11 5 is fitted with the tread of the left rail 9, the second ultrasonic wheel probe group and the second eddy current probe group are fitted with the tread of the right rail 13, the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12 are both connected to the host computer 7 for communication, the first ultrasonic wheel probe group 4 and the second ultrasonic wheel probe group are both connected to the ultrasonic data acquisition processor 3 for communication, the first eddy current probe group 11 5 and the second eddy current probe group are both connected to the eddy current data acquisition processor 12 for communication, and the encoder 6 is connected to the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12 for communication; finally, the host computer 7 is started, and after setting the detection information and parameters, the detection is started, so as to perform ultrasonic detection on the internal damage and vertical damage of the rails at the rail head, rail waist and extended parts of the left rail 9 and the right rail 13, and perform eddy current detection on the surface cracks of the rail tread, thereby improving the detection speed of eddy current detection and vertical damage of welds.

[0027] like Figure 4 and Figure 5As shown, the first ultrasonic probe wheel group 4 includes a first single-probe 8-method probe wheel and three first double-probe method probe wheels 10. The first single-probe 8-method probe wheel is used to detect internal damage of the parent material of the rail head, rail waist and extended parts of the left rail 9, and the three first double-probe method probe wheels 10 are used to detect vertical defects of the rail head, rail waist and extended parts of the left rail 9; the second ultrasonic probe wheel group includes a second single-probe method probe wheel and three second double-probe method probe wheels. The second single-probe method probe wheel is used to detect internal damage of the parent material of the rail head, rail waist and extended parts of the right rail 13, and the three second double-probe method probe wheels are used to detect vertical defects of the rail head, rail waist and extended parts of the right rail 13. In this embodiment, through the first ultrasonic probe wheel group 4 composed of a first single-probe probe wheel 8 and three first double-probe probe wheel 10, the internal damage of the parent material of the rail head, rail waist and extended parts of the left rail 9 can be better detected; through the second ultrasonic probe wheel group composed of a second single-probe probe wheel and three second double-probe probe wheel, the internal damage of the parent material of the rail head, rail waist and extended parts of the right rail 13 can be better detected, so that the double rails composed of the left rail 9 and the right rail 13 can be ultrasonically detected for internal damage and vertical damage, thereby improving the ease of use of the ultrasonic eddy current integrated double-rail flaw detector.

[0028] like Figure 4 and Figure 5 As shown, the first single-probe 8-method detection wheel includes six first 70° wafers, two first 37° wafers, one first 0° wafer and a first detection wheel, and the six first 70° wafers, two first 37° wafers and one first 0° wafer are all installed in the first detection wheel. The three first double-probe detection wheels 10 include 10 first 45° wafers and three second detection wheels, and the 10 first 45° wafers are respectively installed in the three second detection wheels in a 4-3-3 distribution. The second single-probe detection wheel includes six second 70° wafers, two second 37° wafers, one second 0° wafer and a third detection wheel, and the six second 70° wafers, two second 37° wafers and one second 0° wafer are all installed in the third detection wheel. The three second double-probe detection wheels include 10 second 45° wafers and three fourth detection wheels, and the 10 second 45° wafers are respectively installed in the three fourth detection wheels in a 4-3-3 distribution. In this embodiment, the first dual-probe method probe wheel 10 and the first dual-probe method probe wheel 10 composed of the above-mentioned chips can both realize serial and non-stop 15km / h dual-probe method ultrasonic flaw detection; similarly, the second dual-probe method probe wheel and the second dual-probe method probe wheel composed of the above-mentioned chips can both realize serial and non-stop 15km / h dual-probe method ultrasonic flaw detection, thereby improving the detection speed of the ultrasonic eddy current integrated dual-track flaw detector.

[0029] like Figure 6As shown, the first eddy current probe 11 group 5 includes eight first eddy current probes 11, which are placed on the tread of the left rail 9 in two rows in a staggered arrangement, and the second eddy current probe group includes eight second eddy current probes, which are placed on the tread of the right rail 13 in two rows in a staggered arrangement. In this embodiment, both the first eddy current probe 11 group 5 and the second eddy current probe group can cover the detection of rail surface defects including fish scales, abrasions, and dents within the range of the rail tread and working edge gauge angle, thereby improving the ease of use of the ultrasonic eddy current integrated double-rail flaw detector.

[0030] In one embodiment of the present invention, a signal amplifier is also included. The encoder 6 is communicatively connected to the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12 through the signal amplifier. The signal amplifier ensures the stability of the signal output and improves the detection accuracy of the ultrasonic eddy current integrated dual-track flaw detector.

[0031] like Figure 2 As shown, the host computer 7 includes a display interface. In this embodiment, the display interface can conveniently observe the progress of the detection in real time, thereby improving the convenience of use of the ultrasonic eddy current integrated dual-track flaw detector.

[0032] like Figures 1 to 7As shown, based on the same inventive concept, the present invention also provides a detection method for an ultrasonic eddy current integrated double-track flaw detector, using the ultrasonic eddy current integrated double-track flaw detector of any of the aforementioned embodiments to perform flaw detection on the left-strand rail 9 and the right-strand rail 13, comprising the following steps: Step 1, installing the ultrasonic data acquisition processor 3, the eddy current data acquisition processor 12 and the host computer 7 on the mounting platform, installing the encoder 6 on the axle of one of the wheels, installing two mounting brackets 2 on both sides of the mounting platform in a relative manner, and installing the first ultrasonic wheel probe group 4 and the first eddy current probe group 11 5 on a mounting bracket in an arranged manner along the length direction of the left-strand rail 9. The first ultrasonic wheel probe group 4 and the second ultrasonic wheel probe group 5 are connected to the ultrasonic data acquisition processor 3, and the second eddy current probe group 5 are connected to the eddy current data acquisition processor 12, and the encoder 6 is connected to the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12; the second ultrasonic wheel probe group 4 and the second eddy current probe group 5 are connected to the ultrasonic data acquisition processor 3, and the second eddy current probe group 5 are connected to the eddy current data acquisition processor 12; the second ultrasonic wheel probe group 4 and the second eddy current probe group 5 are connected to the eddy current data acquisition processor 12, and the second eddy current probe group 5 are connected to the eddy current data acquisition processor 12; the second ultrasonic wheel probe group 4 and the second eddy current probe group 5 are connected to the eddy current data acquisition processor 12, and the second eddy current probe group 5 are connected to the eddy current data acquisition processor 12; the second eddy current probe group 5 and the second eddy current probe group 5 are connected to the eddy current data acquisition processor 12; the second eddy current probe group 5 and the encoder 6 are connected to the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12; the second eddy current probe group 5 and the second eddy current probe group 5 are connected to ... According to the data acquisition processor 12, they are all connected in communication, confirming that the first ultrasonic wheel probe group 4, the first eddy current probe group 11 and 5 are in contact with the tread of the left rail 9, and confirming that the second ultrasonic wheel probe group and the second eddy current probe group are in contact with the tread of the right rail 13; Step three, turn on the power, start the host computer 7, set the detection information and parameters, and start the detection. As the traveling vehicle 1 starts to move, the encoder 6 is triggered to generate a pulse signal. The pulse signal of the encoder 6 is amplified by the signal amplifier, and then divided into two signals and sent to the ultrasonic flaw detection data acquisition processor and the eddy current flaw detection data acquisition processor synchronously. The pulse signal triggers the first ultrasonic wheel probe group 4, the second ultrasonic wheel probe group, and the second eddy current probe group. The first eddy current probe group 11 5 and the second eddy current probe group start to collect detection signals, and at the same time, synchronously encode and position calibrate the flaw detection data; Step 4, the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12 upload the flaw detection data after being numbered by the encoder 6 to the host computer 7, and the host computer 7 processes the data with the encoder 6 number sent by the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12, and analyzes it, so as to perform ultrasonic detection on the internal damage and vertical damage of the rail head, rail waist and extended parts of the left rail 9 and the right rail 13, and perform eddy current detection on the surface cracks of the rail tread.

[0033] Specifically, in step four, the detection data is synchronously displayed on the display interface. When the flaw detection is running, the host computer 7 can simultaneously scroll and display the ultrasonic and eddy current detection B display interface of the left and right rails in real time. The host computer 7 displays and processes the detection data in real time, and analyzes, alarms, stores, replays, and outputs reports on the data.

[0034] The ultrasonic eddy current integrated double-track flaw detector and detection method provided by the present invention include a traveling vehicle 1, two mounting brackets 2, an ultrasonic data acquisition processor 3, a first ultrasonic wheel detection group 4, a first eddy current probe 11 group 5, a second ultrasonic wheel detection group, a second eddy current probe group, an eddy current data acquisition processor 12, an encoder 6 and a host computer 7. First, the ultrasonic data acquisition processor 3, the eddy current data acquisition processor 12 and the host computer 7 are all installed on the mounting platform, and the encoder 6 is installed on the axle of one of the wheels; the two mounting brackets 2 are relatively installed on both sides of the mounting platform, the first ultrasonic wheel detection group 4 and the first eddy current probe 11 group 5 are arranged along the length direction of the left rail 9 and installed on one mounting bracket 2, and the second ultrasonic wheel detection group and the second eddy current probe group are arranged along the length direction of the right rail 13 and installed on the other mounting bracket 2; then, the first ultrasonic wheel detection group 4 and the first eddy current probe group 11 are installed on the other mounting bracket 2; The ultrasonic wheel group 4 and the first eddy current probe group 11 5 are fitted to the tread of the left rail 9, the second ultrasonic wheel group and the second eddy current probe group are fitted to the tread of the right rail 13, the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12 are both connected to the host computer 7 for communication, the first ultrasonic wheel group 4 and the second ultrasonic wheel group are both connected to the ultrasonic data acquisition processor 3 for communication, the first eddy current probe 11 group 5 and the second eddy current probe group are both connected to the eddy current data acquisition processor 12 for communication, and the encoder 6 is connected to the ultrasonic data acquisition processor 3 and the eddy current data acquisition processor 12 for communication; finally, the host computer 7 is started, and after setting the detection information and parameters, the detection is started, so as to perform ultrasonic detection on the internal damage and vertical damage of the rails at the rail head, rail waist and extended parts of the left rail 9 and the right rail 13, and perform eddy current detection on the surface cracks of the rail tread, thereby improving the detection speed of eddy current detection and vertical damage of welds.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An ultrasonic eddy current integrated double-track flaw detector, characterized in that: It includes a traveling carriage, two mounting brackets, an ultrasonic data acquisition processor, a first ultrasonic wheel probe group, a first eddy current probe group, a second ultrasonic wheel probe group, a second eddy current probe group, an eddy current data acquisition processor, an encoder and a host computer, wherein: The traveling vehicle comprises a mounting platform and four wheels, the ultrasonic data acquisition processor, the eddy current data acquisition processor and the host computer are all mounted on the mounting platform, and the encoder is mounted on the axle of one of the wheels; The two mounting brackets are relatively mounted on both sides of the mounting platform, the first ultrasonic wheel probe group and the first eddy current probe group are arranged along the length direction of the left rail and mounted on one mounting bracket, and are used to fit with the tread of the left rail, the second ultrasonic wheel probe group and the second eddy current probe group are arranged along the length direction of the right rail and mounted on the other mounting bracket, and are used to fit with the tread of the right rail; The ultrasonic data acquisition processor and the eddy current data acquisition processor are both communicatively connected to the host computer, the first ultrasonic detection wheel group and the second ultrasonic detection wheel group are both communicatively connected to the ultrasonic data acquisition processor, the first eddy current probe group and the second eddy current probe group are both communicatively connected to the eddy current data acquisition processor, and the encoder is both communicatively connected to the ultrasonic data acquisition processor and the eddy current data acquisition processor.

2. The ultrasonic eddy current integrated dual-track flaw detector according to claim 1, characterized in that: The first ultrasonic probe wheel group includes a first single-probe probe wheel and three first double-probe probe wheels. The first single-probe probe wheel is used to detect internal damage to the parent material of the rail head, rail waist and extended parts of the left rail, and the three first double-probe probe wheels are used to detect vertical defects of the rail head, rail waist and extended parts of the left rail; the second ultrasonic probe wheel group includes a second single-probe probe wheel and three second double-probe probe wheels. The second single-probe probe wheel is used to detect internal damage to the parent material of the rail head, rail waist and extended parts of the right rail, and the three second double-probe probe wheels are used to detect vertical defects of the rail head, rail waist and extended parts of the right rail.

3. The ultrasonic eddy current integrated dual-track flaw detector according to claim 1, characterized in that: The first single-probe method detection wheel includes six first 70° chips, two first 37° chips, one first 0° chip and a first detection wheel, and the six first 70° chips, two first 37° chips and one first 0° chip are all installed in the first detection wheel; the three first double-probe method detection wheels include 10 first 45° chips and three second detection wheels, and the 10 first 45° chips are respectively installed in the three second detection wheels in a 4-3-3 distribution; the second single-probe method detection wheel includes six second 70° chips, two second 37° chips, one second 0° chip and a third detection wheel, and the six second 70° chips, two second 37° chips and one second 0° chip are all installed in the third detection wheel; the three second double-probe method detection wheels include 10 second 45° chips and three fourth detection wheels, and the 10 second 45° chips are respectively installed in the three fourth detection wheels in a 4-3-3 distribution.

4. The ultrasonic eddy current integrated dual-track flaw detector according to claim 1, characterized in that: The first eddy current probe group includes eight first eddy current probes, which are arranged in two rows in a staggered manner on the tread of the left rail. The second eddy current probe group includes eight second eddy current probes, which are arranged in two rows in a staggered manner on the tread of the right rail.

5. The ultrasonic eddy current integrated dual-track flaw detector according to claim 1, characterized in that: It also includes a signal amplifier, and the encoder is communicatively connected with the ultrasonic data acquisition processor and the eddy current data acquisition processor through the signal amplifier.

6. The ultrasonic eddy current integrated dual-track flaw detector according to claim 1, characterized in that: The host computer includes a display interface.

7. A detection method of an ultrasonic eddy current integrated double-rail flaw detector, using the ultrasonic eddy current integrated double-rail flaw detector according to any one of claims 1 to 6 to perform flaw detection on a left rail and a right rail, characterized in that: The following steps are involved: Step 1, install the ultrasonic data acquisition processor, the eddy current data acquisition processor and the host computer on the installation platform, install the encoder on the axle of one of the wheels, install two mounting brackets on both sides of the installation platform opposite to each other, install the first ultrasonic wheel probe group and the first eddy current probe group on one mounting bracket along the length direction of the left rail, and place them on the tread of the left rail, and install the second ultrasonic wheel probe group and the second eddy current probe group on another mounting bracket along the length direction of the right rail, and place them on the tread of the right rail; Step 2, the ultrasonic data acquisition processor and the eddy current data acquisition processor are both connected to the host computer for communication, the first ultrasonic wheel probe group and the second ultrasonic wheel probe group are both connected to the ultrasonic data acquisition processor for communication, the first eddy current probe group and the second eddy current probe group are both connected to the eddy current data acquisition processor for communication, the encoder is connected to the ultrasonic data acquisition processor and the eddy current data acquisition processor for communication, confirm that the first ultrasonic wheel probe group and the first eddy current probe group fit the tread of the left rail, and confirm that the second ultrasonic wheel probe group and the second eddy current probe group fit the tread of the right rail; Step 3: Turn on the power, start the host computer, set the detection information and parameters, and start the detection. As the traveling vehicle starts to move, the encoder is triggered to generate a pulse signal. The pulse signal of the encoder is amplified by the signal amplifier, and then divided into two signals and sent to the ultrasonic flaw detection data acquisition processor and the eddy current flaw detection data acquisition processor synchronously. The pulse signal triggers the first ultrasonic wheel probe group, the second ultrasonic wheel probe group, the first eddy current probe group and the second eddy current probe group to start collecting detection signals, and at the same time, the flaw detection data is synchronously encoded and position calibrated; Step 4: The ultrasonic data acquisition processor and the eddy current data acquisition processor upload the flaw detection data processed by the encoder number to the host computer. The host computer processes and analyzes the data with the encoder number sent by the ultrasonic data acquisition processor and the eddy current data acquisition processor, thereby performing ultrasonic detection on the internal damage and vertical damage of the rail head, rail waist and extended parts of the left and right rails, and performing eddy current detection on the surface cracks of the rail tread.

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