Disassembly-free fastener scanning device for steel rail contact welding flaw detection

Abstract

According to the steel rail contact welding flaw detection disassembly-free fastener scanning device, a fastener does not need to be disassembled, a first probe and a second probe are arranged, an included angle alpha is formed between the first probe and the horizontal plane of a rail bottom plate, the included angle alpha ranges from 36 degrees to 39 degrees, and an included angle beta is formed between the second probe and the horizontal plane of the rail bottom plate. The included angle beta is 41-44 degrees, so that forward and reverse flaw detection can be carried out on a fastener shielding detection area, and the flaw detection coverage rate is increased; meanwhile, a stable coordinate position is provided by the first roller group and the second roller group, a stable flaw detection position of the probe box 2 on the side of the steel rail 1 is determined, a magnet is arranged to provide stable suction force, a fixed chute is arranged to fix a constant angle, and an elastic connecting piece is arranged to provide constant pressure, so that the probe box stably performs flaw detection, and the flaw detection efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic flaw detection of rail welds, and more specifically to a scanning device for rail contact weld flaw detection without disassembly of fasteners. Background Art

[0002] Seamless rails are the basis for the normal operation of high-speed railways. Poor welding may occur during the welding process, and stress or fatigue defects may occur during use, causing damage to the rail line and endangering the safety of train operation. Using ultrasonic detection of defects in rail welds is the most direct and effective measure to ensure that the rail welds can meet the needs of train operation.

[0003] Currently, railway bureaus nationwide primarily use manual single-probe inspection for weld flaw detection on rail bottoms. The manual single-probe inspection process is as follows: The rail bottom is inspected 20 times using a K2.5 probe, with each weld inspected taking approximately 10 minutes.

[0004] The manual single probe process has the following problems:

[0005] (1) Low detection efficiency. The use of manual single probe detection requires a high level of skill from the flaw detector. Due to the uneven flaw detection skills of the flaw detectors, it is difficult to achieve consistent detection results.

[0006] (2) Low detection accuracy and poor feedback. Manual single-probe detection without a displacement encoder prevents the instrument from drawing an accurate B-display and cannot intuitively reflect the exact location of the defect. It is difficult for playback personnel to distinguish between defect echoes and weld rib echoes.

[0007] (3) Low coverage of flaw detection. There are fasteners in the factory welds of the rail bottom plate, and manual single probe detection cannot achieve full coverage of flaw detection.

[0008] In view of this, the utility model proposes a stable and accurate flaw detection, full coverage flaw detection, and a rail contact weld flaw detection and fastener scanning device without disassembly. Utility Model Content

[0009] The purpose of the utility model is to provide a stable and accurate flaw detection and full coverage flaw detection device for rail contact welding flaw detection without disassembly of fasteners.

[0010] A scanning device for detecting non-disassembly fasteners for contact welding of rails, comprising a rail 1 and a probe box 2. The probe box 2 is provided on the side of the rail 1, and is characterized in that: two probe assemblies 7 are spaced apart below the probe box 2, and adjacent probe assemblies 7 are arranged horizontally symmetrically. One end of the probe assembly 7 is fixedly connected to the probe box 2, and the other end of the probe assembly 7 is fitted with an arc area 13 formed by connecting the waist 11 of the rail 1 and the rail bottom plate 12. An encoding data wheel 3 is provided between adjacent probe assemblies 7 or on one side of the probe assembly 7. A first roller group 5 is provided on one side of each probe assembly 7, and the bottom surfaces of adjacent first roller groups 5 are in the same straight line. The probe box 2 is fitted with the waist 11 of the rail 1 through the first roller group 5 below. A second roller group 6 is provided on the other side of each probe assembly 7, and the bottom surfaces of adjacent second roller groups 6 are in the same straight line. The second roller group 6 is connected to the rail base plate 12 of the rail 1, and the probe assembly 7 includes a first probe 71 and a second probe 72. The first probe 71 and the second probe 72 are sequentially arranged under the probe box 2. One end of the first probe 71 and the second probe 72 are connected to the rail waist 11 of the rail 1, and the other end of the first probe 71 and the second probe 72 are connected to the probe box 2 through an elastic connector 8. The elastic connector 8 is used to provide constant pressure to the first probe 71 and the second probe 72 so that they can move stably during sliding for sliding flaw detection. The first probe 71 forms an angle α with the horizontal plane of the rail base plate 12, and the angle α is 36°-39°. The second probe 72 forms an angle β with the horizontal plane of the rail base plate 12, and the angle β is 41°-44°, so that it can detect flaws in the fastener-blocked detection area in both directions.

[0011] Furthermore, a magnet 4 is provided on both sides of each second probe 72 , and the magnet 4 is used to provide a stable suction force for connecting the probe box 2 with the rail 1 , so as not to cause difficulty in sliding the probe box 2 .

[0012] Furthermore, the adjacent probe assemblies 7 and the first roller group 5 are horizontal, and the adjacent second roller group 6 are all horizontally symmetrically arranged.

[0013] Furthermore, the K value of the first probe 71 and the second probe 72 is K1-K1.5, and a more preferred K value is K1.2.

[0014] In some embodiments, a fixed slide groove 21 is further provided between the lower portion of the probe box 2 and the first probe 71 and the second probe 72 . The fixed slide groove 21 is used to assist in fixing the probe angle.

[0015] In some embodiments, the elastic connecting member 8 is a compression spring.

[0016] In some embodiments, the first roller assembly 5 includes a first roller 51 and a second roller 52 . A first roller 51 and a second roller 52 are sequentially provided on one side of each probe assembly 7 , and a magnet 4 is provided between the first roller 51 and the second roller 52 .

[0017] In some embodiments, the second roller group 6 includes a third roller 61 and a fourth roller 62 . The other side of each probe assembly 7 is sequentially provided with a third roller 61 and a fourth roller 62 . A magnet 4 is provided between the third roller 61 and the fourth roller 62 .

[0018] Beneficial effects of the present invention: The present invention proposes a scanning device for rail contact welding flaw detection without disassembly of fasteners, which does not require disassembly of fasteners. A first probe 71 and a second probe 72 are set, and the first probe 71 forms an angle α with the horizontal plane of the rail base plate 12, and the angle α is 36°-39°. The second probe 72 forms an angle β with the horizontal plane of the rail base plate 12, and the angle β is 41°-44°, so that it can detect flaws in the fastener-blocked detection area in both directions, thereby improving the detection coverage rate; at the same time, the first roller group 5 and the second roller group 6 provide a stable coordinate position, determine the stable position of the probe box 2 for flaw detection on the side of the rail 1, set a magnet 4 to provide stable suction, set a fixed slide 21 to fix a constant angle, and set an elastic connector 8 to provide constant pressure, so that the probe box 2 can be stably used for flaw detection, thereby greatly improving the flaw detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a rail contact weld flaw detection and fastener scanning device of the present application.

[0020] Figure 2 This is a cross-sectional view of a probe assembly of a rail contact weld flaw detection and fastener scanning device according to the present application.

[0021] Figure 3 This is a schematic diagram of the rail and probe flaw detection status of a rail contact weld flaw detection and fastener scanning device of the present application.

[0022] Figure 4 This is a schematic diagram of the flaw detection status of the rail and probe of a rail contact weld flaw detection and fastener scanning device of the present application.

[0023] Figure 5 This is a diagram of the ultrasonic coverage area of ​​the rail by the first probe in a scanning device for detecting rail contact weld fasteners without disassembly in this application.

[0024] Figure 6 This is a diagram of the ultrasonic coverage area of ​​the second probe in the rail contact weld flaw detection and fastener scanning device of the present application.

[0025] Figure 7This is a diagram of the ultrasonic full coverage area of ​​the rail flaw detection by the probe assembly of a rail contact weld flaw detection and fastener scanning device of this application.

[0026] Description of main component symbols

[0027] Rail 1, rail waist 11, rail base plate 12, arc area 13, probe box 2, fixed slide 21, encoding data wheel 3, magnet 4, first roller group 5, first roller 51, second roller 52, second roller group 6, third roller 61, fourth roller 62, probe assembly 7, first probe 71, second probe 72, elastic connector 8.

[0028] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0029] The following examples are described to assist in understanding the present application, and the examples are not and should not be interpreted in any way as limiting the scope of protection of the present application.

[0030] In the following description, those skilled in the art will recognize that throughout this discussion, components may be described as separate functional units (which may include sub-units), but those skilled in the art will recognize that various components or portions thereof may be divided into separate components or may be integrated together (including within a single system or component).

[0031] At the same time, the connections between components or systems are not intended to be limited to direct connections. Instead, data between these components may be modified, reformatted, or otherwise changed by intermediate components. In addition, additional or fewer connections may be used. It should also be noted that the terms "coupled," "connected," or "input" should be understood to include direct connections, indirect connections through one or more intermediate devices, and wireless connections.

[0032] Example 1:

[0033] like Figure 2 As shown in FIG, a cross-sectional view of a probe assembly of a rail contact weld flaw detection and fastener scanning device of the present application; Figure 3 As shown in FIG, a schematic diagram of the rail and probe flaw detection status of a rail contact welding flaw detection and fastener scanning device of the present application; Figure 4 As shown in FIG, a schematic diagram of the rail and probe flaw detection status of a rail contact welding flaw detection and fastener scanning device of the present application; Figure 5 As shown in FIG, it is a diagram of the ultrasonic coverage area of ​​the first probe in a scanning device for detecting rail contact weld fasteners without disassembly of the present application; as shown in FIG. Figure 6 As shown in FIG, it is a diagram of the ultrasonic coverage area of ​​the second probe in the rail contact welding flaw detection and non-disassembly fastener scanning device of the present application; as shown in FIG. Figure 7, which is a diagram of the ultrasonic full coverage area of ​​the rail flaw detection by the probe assembly of a rail contact weld flaw detection and fastener scanning device of the present application.

[0034] A scanning device for detecting non-disassembly fasteners for contact welding of rails, comprising a rail 1 and a probe box 2. The probe box 2 is provided on the side of the rail 1, and is characterized in that: two probe assemblies 7 are spaced apart below the probe box 2, and adjacent probe assemblies 7 are arranged horizontally symmetrically. One end of the probe assembly 7 is fixedly connected to the probe box 2, and the other end of the probe assembly 7 is fitted with an arc area 13 formed by connecting the waist 11 of the rail 1 and the rail bottom plate 12. One side of one of the probe assemblies 7 is provided with a coding data wheel 3, and one side of each probe assembly 7 is provided with a first roller group 5, and the bottom surfaces of adjacent first roller groups 5 are in the same straight line. The probe box 2 is fitted with the waist 11 of the rail 1 through the first roller group 5 below, and the other side of each probe assembly 7 is provided with a second roller group 6, and the bottom surfaces of adjacent second roller groups 6 are in the same straight line. The second roller group 6 is fitted and connected to the rail base plate 12 of the rail 1, and the probe assembly 7 includes a first probe 71 and a second probe 72. The first probe 71 and the second probe 72 are sequentially arranged under the probe box 2. One end of the first probe 71 and the second probe 72 are connected to the rail waist 11 of the rail 1, and the other end of the first probe 71 and the second probe 72 are connected to the probe box 2 through an elastic connector 8. The elastic connector 8 is used to provide constant pressure to the first probe 71 and the second probe 72 so that they can move stably during sliding for sliding flaw detection. The first probe 71 forms an angle α with the horizontal plane of the rail base plate 12, and the angle α is 36°-39°. The second probe 72 forms an angle β with the horizontal plane of the rail base plate 12, and the angle β is 41°-44°, so that it can detect flaws in the fastener-blocked detection area in both directions.

[0035] A magnet 4 is provided on both sides of each second probe 72 , and the magnet 4 is used to provide a stable suction force for connecting the probe box 2 with the rail 1 , so as not to cause difficulty in sliding the probe box 2 .

[0036] The adjacent probe assemblies 7 and the first roller group 5 are horizontal, and the adjacent second roller group 6 are all horizontally symmetrically arranged.

[0037] The K value of the first probe 71 and the second probe 72 is K1-K1.5, and the more preferred K value is K1.2.

[0038] A fixed slide groove 21 is further provided between the lower portion of the probe box 2 and the first probe 71 and the second probe 72 . The fixed slide groove 21 is used to assist in fixing the probe angle.

[0039] The elastic connecting member 8 is a compression spring.

[0040] The first roller group 5 includes a first roller 51 and a second roller 52 . The first roller 51 and the second roller 52 are sequentially provided on one side of each probe assembly 7 . A magnet 4 is provided between the first roller 51 and the second roller 52 .

[0041] The second roller group 6 includes a third roller 61 and a fourth roller 62 . The other side of each probe assembly 7 is sequentially provided with a third roller 61 and a fourth roller 62 . A magnet 4 is provided between the third roller 61 and the fourth roller 62 .

[0042] Beneficial effects of the present invention: The present invention proposes a scanning device for rail contact welding flaw detection without disassembly of fasteners, which does not require disassembly of fasteners. A first probe 71 and a second probe 72 are set, and the first probe 71 forms an angle α with the horizontal plane of the rail base plate 12, and the angle α is 36°-39°. The second probe 72 forms an angle β with the horizontal plane of the rail base plate 12, and the angle β is 41°-44°, so that it can detect flaws in the fastener-blocked detection area in both directions, thereby improving the detection coverage rate; at the same time, the first roller group 5 and the second roller group 6 provide a stable coordinate position, determine the stable position of the probe box 2 for flaw detection on the side of the rail 1, set a magnet 4 to provide stable suction, set a fixed slide 21 to fix a constant angle, and set an elastic connector 8 to provide constant pressure, so that the probe box 2 can be stably used for flaw detection, thereby greatly improving the flaw detection efficiency.

[0043] Example 2:

[0044] like Figure 1 As shown in FIG, it is a schematic diagram of the overall structure of a rail contact welding flaw detection and fastener scanning device of the present application; Figure 2 As shown in FIG, a cross-sectional view of a probe assembly of a rail contact weld flaw detection and fastener scanning device of the present application; Figure 3 As shown in FIG, a schematic diagram of the rail and probe flaw detection status of a rail contact welding flaw detection and fastener scanning device of the present application; Figure 4 As shown in FIG, a schematic diagram of the rail and probe flaw detection status of a rail contact welding flaw detection and fastener scanning device of the present application; Figure 5 As shown in FIG, it is a diagram of the ultrasonic coverage area of ​​the first probe in a scanning device for detecting rail contact weld fasteners without disassembly of the present application; as shown in FIG. Figure 6 As shown in FIG, it is a diagram of the ultrasonic coverage area of ​​the second probe in the rail contact welding flaw detection and non-disassembly fastener scanning device of the present application; as shown in FIG. Figure 7 , which is a diagram of the ultrasonic full coverage area of ​​the rail flaw detection by the probe assembly of a rail contact weld flaw detection and fastener scanning device of the present application.

[0045] A scanning device for detecting non-disassembly fasteners for contact welding of rails, comprising a rail 1 and a probe box 2. The probe box 2 is provided on the side of the rail 1, and is characterized in that: two probe assemblies 7 are spaced apart below the probe box 2, and adjacent probe assemblies 7 are arranged horizontally symmetrically. One end of the probe assembly 7 is fixedly connected to the probe box 2, and the other end of the probe assembly 7 is fitted with an arc area 13 formed by connecting the waist 11 of the rail 1 and the rail bottom plate 12. One side of one of the probe assemblies 7 is provided with a coding data wheel 3, and one side of each probe assembly 7 is provided with a first roller group 5, and the bottom surfaces of adjacent first roller groups 5 are in the same straight line. The probe box 2 is fitted with the waist 11 of the rail 1 through the first roller group 5 below, and the other side of each probe assembly 7 is provided with a second roller group 6, and the bottom surfaces of adjacent second roller groups 6 are in the same straight line. The second roller group 6 is fitted and connected to the rail base plate 12 of the rail 1, and the probe assembly 7 includes a first probe 71 and a second probe 72. The first probe 71 and the second probe 72 are sequentially arranged under the probe box 2. One end of the first probe 71 and the second probe 72 are connected to the rail waist 11 of the rail 1, and the other end of the first probe 71 and the second probe 72 are connected to the probe box 2 through an elastic connector 8. The elastic connector 8 is used to provide constant pressure to the first probe 71 and the second probe 72 so that they can move stably during sliding for sliding flaw detection. The first probe 71 forms an angle α with the horizontal plane of the rail base plate 12, and the angle α is 36°-39°. The second probe 72 forms an angle β with the horizontal plane of the rail base plate 12, and the angle β is 41°-44°, so that it can detect flaws in the fastener-blocked detection area in both directions.

[0046] A magnet 4 is provided on both sides of each second probe 72 , and the magnet 4 is used to provide a stable suction force for connecting the probe box 2 with the rail 1 , so as not to cause difficulty in sliding the probe box 2 .

[0047] The adjacent probe assemblies 7 and the first roller group 5 are horizontal, and the adjacent second roller group 6 are all horizontally symmetrically arranged.

[0048] The K value of the first probe 71 and the second probe 72 is K1-K1.5, and the more preferred K value is K1.2.

[0049] A fixed slide groove 21 is further provided between the lower portion of the probe box 2 and the first probe 71 and the second probe 72 . The fixed slide groove 21 is used to assist in fixing the probe angle.

[0050] The elastic connecting member 8 is a compression spring.

[0051] The first roller group 5 includes a first roller 51 and a second roller 52 . The first roller 51 and the second roller 52 are sequentially provided on one side of each probe assembly 7 . A magnet 4 is provided between the first roller 51 and the second roller 52 .

[0052] The second roller group 6 includes a third roller 61 and a fourth roller 62 . The other side of each probe assembly 7 is sequentially provided with a third roller 61 and a fourth roller 62 . A magnet 4 is provided between the third roller 61 and the fourth roller 62 .

[0053] Beneficial effects of the present invention: The present invention proposes a scanning device for rail contact welding flaw detection without disassembly of fasteners, which does not require disassembly of fasteners. A first probe 71 and a second probe 72 are set, and the first probe 71 forms an angle α with the horizontal plane of the rail base plate 12, and the angle α is 36°-39°. The second probe 72 forms an angle β with the horizontal plane of the rail base plate 12, and the angle β is 41°-44°, so that it can detect flaws in the fastener-blocked detection area in both directions, thereby improving the detection coverage rate; at the same time, the first roller group 5 and the second roller group 6 provide a stable coordinate position, determine the stable position of the probe box 2 for flaw detection on the side of the rail 1, set a magnet 4 to provide stable suction, set a fixed slide 21 to fix a constant angle, and set an elastic connector 8 to provide constant pressure, so that the probe box 2 can be stably used for flaw detection, thereby greatly improving the flaw detection efficiency.

[0054] Although this application has disclosed various aspects and embodiments, other aspects and embodiments will be readily apparent to those skilled in the art. Variations and modifications may be made without departing from the spirit of this application, and all such variations and modifications are within the scope of this application. The various aspects and embodiments disclosed in this application are provided for illustrative purposes only and are not intended to limit this application. The actual scope of this application is determined by the claims.

Claims

1. A scanning device for detecting contact weld defects of rails without disassembly fasteners, comprising a rail (1) and a probe box (2), wherein the probe box (2) is provided on the side of the rail (1), and is characterized in that: Two probe assemblies (7) are arranged at intervals below the probe box (2), and adjacent probe assemblies (7) are arranged horizontally and symmetrically. One end of the probe assembly (7) is fixedly connected to the probe box (2), and the other end of the probe assembly (7) is fitted with an arc area (13) formed by connecting the rail waist (11) and the rail bottom plate (12) of the rail (1). A coding data wheel (3) is provided between adjacent probe assemblies (7) or on one side of the probe assembly (7). A first roller group (5) is provided on one side of each probe assembly (7), and the bottom surfaces of adjacent first roller groups (5) are on the same straight line. The probe box (2) is fitted with the rail waist (11) of the rail (1) through the first roller group (5). The other side of each probe assembly (7) is provided with a second roller group (6), and the bottom surfaces of adjacent second roller groups (6) are on the same straight line. The probe box (2) is fitted with the rail bottom plate (12) of the rail (1) through the second roller group (6). ) are fitted and connected, the probe assembly (7) includes a first probe (71) and a second probe (72), the first probe (71) and the second probe (72) are sequentially arranged below the probe box (2), one end of the first probe (71) and the second probe (72) are both connected to the rail waist (11) of the rail (1), and the other end of the first probe (71) and the second probe (72) are both connected to the probe box (2) through an elastic connector (8), the elastic connector (8) is used to provide a constant pressure to the first probe (71) and the second probe (72) so that they can move stably when sliding to perform sliding flaw detection, the first probe (71) and the horizontal plane of the rail bottom plate (12) form an angle α, the angle α is 36°-39°, the second probe (72) and the horizontal plane of the rail bottom plate (12) form an angle β, the angle β is 41°-44°, so that it can detect flaws in the fastener-blocked detection area in both positive and negative directions.

2. The rail contact weld flaw detection and fastener scanning device according to claim 1, characterized in that: A magnet (4) is provided on both sides of each second probe (72).

3. The rail contact weld flaw detection and fastener scanning device according to claim 1, characterized in that: The first roller group (5) and the adjacent second roller group (6) are both arranged horizontally and symmetrically.

4. The rail contact weld flaw detection and fastener scanning device according to claim 1, characterized in that: The K value of the first probe (71) and the second probe (72) is K1-K1.

5.

5. The rail contact weld flaw detection and fastener scanning device according to claim 1, characterized in that: A fixed slide groove (21) is further provided between the lower portion of the probe box (2) and the first probe (71) and the second probe (72). The fixed slide groove (21) is used to assist in fixing the angle of the probe.

6. The rail contact weld flaw detection and fastener scanning device according to claim 1, characterized in that: The elastic connecting member (8) is a compression spring.

7. The rail contact weld flaw detection and fastener scanning device according to claim 1, characterized in that: The first roller group (5) comprises a first roller (51) and a second roller (52). The first roller (51) and the second roller (52) are sequentially provided on one side of each probe assembly (7), and a magnet (4) is provided between the first roller (51) and the second roller (52).

8. The rail contact weld flaw detection and fastener scanning device according to claim 1, characterized in that: The second roller group (6) includes a third roller (61) and a fourth roller (62). The other side of each probe assembly (7) is provided with a third roller (61) and a fourth roller (62) in sequence. A magnet (4) is provided between the third roller (61) and the fourth roller (62).

Images