Special test block for detecting resolution of steel rail wheel type probe

Abstract

The utility model discloses a special test block for detecting the resolution of a steel rail wheel type probe, which comprises a block body provided with a first rectangular notch groove and a second rectangular notch groove for detecting the resolution of a 0-degree probe at the bottom, and the depth of the second rectangular notch groove is greater than that of the first rectangular notch groove. The length of the second rectangular notch groove is smaller than that of the first rectangular notch groove; detection transverse hole groups for detecting the resolution of the 37-degree probe and the 70-degree probe are symmetrically formed in the two sides of the block body, each detection transverse hole comprises a first detection cylindrical hole, a second detection cylindrical hole and a third detection cylindrical hole which are sequentially communicated and enlarged, and the central axis of the first detection hole and the central line of the top of the block body in the width direction form a first plane; the central axis of the third detection hole and the central line of the top of the block body in the width direction form a second plane, and the included angles between the first plane and the central vertical tangent plane in the width direction of the block body and between the second plane and the central vertical tangent plane in the width direction of the block body are 70 degrees and 37 degrees respectively. The wheel-type probe resolution detection device has a good wheel-type probe resolution detection effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of rail wheel type probe detection, and particularly relates to a special test block for detecting the resolution of a rail wheel type probe. Background Technique

[0002] The working performance of a rail wheel type ultrasonic flaw detector refers to the working performance of the ultrasonic flaw detection system tested by the rail wheel type ultrasonic flaw detector under the detection site conditions. The ultrasonic detection system refers to the equipment used in actual detection work, including a flaw detector, a wheel type probe, and a high-frequency cable connecting them. The nondestructive detection of metal material workpieces is the detection of the interior and surface of workpieces without damaging or changing their physical and chemical states, and is widely used in fields such as the nuclear industry, aerospace, metallurgy, machinery, electric power, special equipment, petrochemical industry, railway, ordnance, shipbuilding, coal, non-ferrous metals, construction, and medicine. Conventional nondestructive detections include ultrasonic detection, ray detection, magnetic particle detection, penetrant detection, and eddy current detection. Among them, ultrasonic detection of metal materials is the most widely used, most frequently used, and fastest-developing nondestructive detection method at home and abroad, and is an important means for quality control of product manufacturing, product performance testing, process improvement, equipment maintenance, in-service detection, and quality appraisal.

[0003] At present, China adopts double-track ultrasonic detection equipment to detect the double tracks of railways simultaneously. The double-track ultrasonic detection equipment consists of an ultrasonic detector, a wheel type probe, a cable, a rail vehicle, a coupling agent tank, a centering system, an electromechanical system, system software, and devices connected to the detector during detection. Among them, each of the two-wheel wheel type probes contains 9 probes (5). The 9 probes (5) in the wheel type probe are respectively: 1 0° probe; 1 front 37° (or +37°) probe and 1 rear 37° (or -37°) probe, 1 front 70° (or +70°) probe, 1 front left oblique 70° (or left +70°) probe, 1 front right oblique 70° (or right +70°) probe, 1 rear 70° (or -70°) probe, 1 rear left oblique 70° (or left -70°) probe, and 1 rear right oblique 70° (or right -70°) probe. The inclination angle a of the oblique 70° is generally 20°. The 9 probes are arranged in the following Figure 6 way and installed on the fixed curved surface in a flexible tire filled with coupling liquid. See Figure 1 . At present, there is no effective detection means for detecting the resolution of rail wheel type probes. Content of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a special test block for detecting the resolution of a rail wheel probe in view of the deficiencies in the above-mentioned prior art. The design is novel and reasonable. The resolution of the 0° probe in the wheel probe is detected by using two right-angle step structures formed by the first rectangular groove, the second rectangular groove and the bottom surface of the block body. The resolution of the 37° and 70° probes in the wheel probe is detected by using two arc-shaped step structures formed by the first detection cylindrical hole, the second detection cylindrical hole and the third detection cylindrical hole which are connected in sequence and have diameters increasing in sequence. The detection effect is good and it is convenient to popularize and use.

[0005] To solve the above technical problem, the technical solution adopted by the utility model is: a special test block for detecting the resolution of a rail wheel probe, which is characterized in that: it includes a block body with a cuboid structure. A rectangular groove group for detecting the resolution of the 0° probe is opened at the bottom position of the block body. First detection transverse hole groups and second detection transverse hole groups for detecting the resolution of the 37° probe and the 70° probe are symmetrically opened at both sides of the block body. The rectangular groove group includes a first rectangular groove and a second rectangular groove opened on one side of the center line of the first rectangular groove close to the vertical direction. The depth of the second rectangular groove is greater than that of the first rectangular groove. The length of the second rectangular groove is less than that of the first rectangular groove. The length of the second rectangular groove is 2 mm. The first detection transverse hole group includes a first detection hole and a third detection hole. The second detection transverse hole group includes a second detection hole and a fourth detection hole. The first detection hole, the second detection hole, the third detection hole and the fourth detection hole all include a first detection cylindrical hole, a second detection cylindrical hole and a third detection cylindrical hole which are connected in sequence. The diameter of the first detection cylindrical hole is less than that of the second detection cylindrical hole. The diameter of the second detection cylindrical hole is less than that of the third detection cylindrical hole. The lengths of the first detection cylindrical hole and the third detection cylindrical hole are both greater than that of the second detection cylindrical hole. The length of the second detection cylindrical hole is 2 mm. The central axis of the first detection hole forms a first plane with the center line in the width direction of the top of the block body. The central axis of the third detection hole forms a second plane with the center line in the width direction of the top of the block body. The included angle between the first plane and the central vertical section in the width direction of the block body is 70°. The included angle between the second plane and the central vertical section in the width direction of the block body is 37°.

[0006] The above-mentioned special test block for detecting the resolution of a rail wheel probe is characterized in that: the width of the block body is greater than the width of the rail detection wheel.

[0007] The above-mentioned special test block for detecting the resolution of a rail wheel probe is characterized in that: the length, width and height of the block body are 235 mm, 82 mm and 100 mm respectively.

[0008] The above-mentioned special test block for detecting the resolution of a rail wheel probe is characterized in that: the length and depth of the first rectangular groove are 30 mm and 9 mm respectively, and the depth of the second rectangular groove is 15 mm.

[0009] The above-mentioned special test block for detecting the resolution of a rail wheel probe is characterized in that: the center line in the vertical direction of the block intersects with the first rectangular groove, and the distance between the center line in the vertical direction of the block and the second rectangular groove is 2 mm.

[0010] The above-mentioned special test block for detecting the resolution of a rail wheel probe is characterized in that: the lengths of the first detection cylindrical hole and the third detection cylindrical hole are both 40 mm, the diameter of the first detection cylindrical hole is 40 mm, the diameter of the second detection cylindrical hole is 44 mm, and the diameter of the third detection cylindrical hole is 50 mm.

[0011] The above-mentioned special test block for detecting the resolution of a rail wheel probe is characterized in that: the block is a special test block of 20# low-carbon steel, and the grain size of the block is 7 - 8 grades.

[0012] The beneficial effect of the present utility model is that the design is novel and reasonable. The resolution of the 0° probe in the wheel probe is detected by using the two right-angle step structures formed by the first rectangular groove, the second rectangular groove and the bottom surface of the block, and the resolution of the 37° and 70° probes in the wheel probe is detected by using the two arc-shaped step structures formed by the first detection cylindrical hole, the second detection cylindrical hole and the third detection cylindrical hole which are sequentially connected and have sequentially increasing diameters. The detection effect is good, the efficiency is high, and it is convenient for popularization and use.

[0013] The technical solution of the present utility model will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0014] Figure 1 It is a usage state diagram of the present utility model.

[0015] Figure 2 It is a structural schematic diagram of the present utility model.

[0016] Figure 3 For Figure 2 the rear view.

[0017] Figure 4 It is a dimension marking diagram of the present utility model.

[0018] Figure 5 For Figure 4 the C-C sectional view.

[0019] Figure 6 It is an arrangement diagram of nine probes of the present utility model.

[0020] Description of the Reference Numerals:

[0021] 1 - Block; 2 - First rectangular groove; 3 - Second rectangular groove;

[0022] 4 - Rail detection wheel; 5 - Probe; 6 - First detection hole;

[0023] 7 - Second detection hole; 8 - Third detection hole; 9 - Fourth detection hole;

[0024] 10 - First detection cylindrical hole; 11 - Second detection cylindrical hole; 12 - Third detection cylindrical hole. Detailed implementation mode

[0025] As Figures 1 to 6 shown, the utility model includes a block 1 with a cuboid structure. A rectangular groove group for 0° probe resolution detection is opened at the bottom of the block 1. First detection transverse hole groups and second detection transverse hole groups for 37° probe and 70° probe resolution detection are symmetrically opened at both sides of the block 1. The rectangular groove group includes a first rectangular groove 2 and a second rectangular groove 3 opened on one side of the center line of the first rectangular groove 2 close to the vertical direction. The depth of the second rectangular groove 3 is greater than that of the first rectangular groove 2. The length of the second rectangular groove 3 is less than that of the first rectangular groove 2, and the length of the second rectangular groove 3 is 2 mm. The first detection transverse hole group includes a first detection hole 6 and a third detection hole 8. The second detection transverse hole group includes a second detection hole 7 and a fourth detection hole 9. The first detection hole 6, the second detection hole 7, the third detection hole 8 and the fourth detection hole 9 all include a first detection cylindrical hole 10, a second detection cylindrical hole 11 and a third detection cylindrical hole 12 that are connected in sequence. The diameter of the first detection cylindrical hole 10 is less than that of the second detection cylindrical hole 11. The diameter of the second detection cylindrical hole 11 is less than that of the third detection cylindrical hole 12. The lengths of the first detection cylindrical hole 10 and the third detection cylindrical hole 12 are both greater than that of the second detection cylindrical hole 11, and the length of the second detection cylindrical hole 11 is 2 mm. The central axis of the first detection hole 6 and the center line of the width direction of the top of the block 1 form a first plane. The central axis of the third detection hole 8 and the center line of the width direction of the top of the block 1 form a second plane. The included angle between the first plane and the central vertical section of the width direction of the block 1 is 70°. The included angle between the second plane and the central vertical section of the width direction of the block 1 is 37°.

[0026] In this embodiment, the width of the block 1 is greater than the width of the rail detection wheel 4.

[0027] As Figure 1 and Figure 6As shown, the nine probes 5 are respectively a 0° probe, a front 37° probe, a rear 37° probe, a front 70° probe, a rear 70° probe, a front left inclined 70° probe, a front right inclined 70° probe, a rear left inclined 70° probe, and a rear right inclined 70° probe.

[0028] In this embodiment, the length, width, and height of the block 1 are 235 mm, 82 mm, and 100 mm respectively.

[0029] In this embodiment, the length and depth of the first rectangular groove 2 are 30 mm and 9 mm respectively, and the depth of the second rectangular groove 3 is 15 mm.

[0030] In this embodiment, the center line of the block 1 in the vertical direction intersects the first rectangular groove 2, and the distance between the center line of the block 1 in the vertical direction and the second rectangular groove 3 is 2 mm.

[0031] In this embodiment, the lengths of the first detection cylindrical hole 10 and the third detection cylindrical hole 12 are both 40 mm, the diameter of the first detection cylindrical hole 10 is 40 mm, the diameter of the second detection cylindrical hole 11 is 44 mm, and the diameter of the third detection cylindrical hole 12 is 50 mm.

[0032] In this embodiment, the block 1 is a special test block of 20# low-carbon steel, and the grain size of the block 1 is 7 - 8 grades.

[0033] When the utility model is in use, the resolution of the 0° probe in the wheel probe is detected by using the two right-angle step structures formed by the first rectangular groove, the second rectangular groove and the bottom surface of the block. The position of the 0° probe is finely adjusted to make the reflection waves of the first rectangular groove and the second rectangular groove have the same height. The resolution of the 0° probe in the wheel probe is detected according to the peak height and valley height of the reflection wave. The front 37° probe, the rear 37° probe, the front 70° probe and the rear 70° probe are finely adjusted and respectively aligned with the arc grooves of the third detection hole 8, the fourth detection hole 9, the first detection hole 6 and the second detection hole 7, so that the reflection waves of the corresponding second detection cylindrical holes 11 and the third detection cylindrical holes 12 have the same height. The resolution of the front 37° probe, the rear 37° probe, the front 70° probe and the rear 70° probe in the wheel probe is detected according to the peak height and valley height of the reflection wave. The inclination angles of the right +70° probe and the left -70° probe in the rail detection wheel 4 are a. The rail detection wheel 4 is rotated counterclockwise by an angle a. The right +70° probe is oriented towards the arc groove of the first detection hole 6, and the left -70° probe is oriented towards the arc groove of the second detection hole 7, so that the reflection waves of the corresponding second detection cylindrical holes 11 and the third detection cylindrical holes 12 have the same height. The resolution of the right +70° probe and the left -70° probe in the wheel probe is detected according to the peak height and valley height of the reflection wave. The rail detection wheel 4 is rotated clockwise by an angle of 2a. The left +70° probe in the rail detection wheel 4 is oriented towards the arc groove of the first detection hole 6, and the right -70° probe is oriented towards the arc groove of the second detection hole 7, so that the reflection waves of the corresponding second detection cylindrical holes 11 and the third detection cylindrical holes 12 have the same height. The resolution of the left +70° probe and the right -70° probe in the wheel probe is detected according to the peak height and valley height of the reflection wave, and the efficiency is high.

[0034] The above is only a preferred embodiment of the present invention, and does not impose any limitations on the present invention. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A special test block for detecting the resolution of a rail wheel probe, characterized in that: It includes a block (1) with a cuboid structure. A rectangular groove group for 0° probe resolution detection is provided at the bottom of the block (1). A first detection transverse hole group and a second detection transverse hole group for 37° probe and 70° probe resolution detection are symmetrically provided at both sides of the block (1). The rectangular groove group includes a first rectangular groove (2) and a second rectangular groove (3) provided on one side of the center line of the first rectangular groove (2) close to the vertical direction. The depth of the second rectangular groove (3) is greater than that of the first rectangular groove (2). The length of the second rectangular groove (3) is less than that of the first rectangular groove (2), and the length of the second rectangular groove (3) is 2 mm. The first detection transverse hole group includes a first detection hole (6) and a third detection hole (8). The second detection transverse hole group includes a second detection hole (7) and a fourth detection hole (9). The first detection hole (6), the second detection hole (7), the third detection hole (8), and the fourth detection hole (9) all include a first detection cylindrical hole (10), a second detection cylindrical hole (11), and a third detection cylindrical hole (12) that are sequentially connected. The diameter of the first detection cylindrical hole (10) is less than that of the second detection cylindrical hole (11). The diameter of the second detection cylindrical hole (11) is less than that of the third detection cylindrical hole (12). The lengths of the first detection cylindrical hole (10) and the third detection cylindrical hole (12) are both greater than that of the second detection cylindrical hole (11), and the length of the second detection cylindrical hole (11) is 2 mm. The central axis of the first detection hole (6) and the center line of the top width direction of the block (1) form a first plane. The central axis of the third detection hole (8) and the center line of the top width direction of the block (1) form a second plane. The included angle between the first plane and the central vertical section in the width direction of the block (1) is 70°. The included angle between the second plane and the central vertical section in the width direction of the block (1) is 37°.

2. The special test block for detecting the resolution of a rail wheel probe according to claim 1, characterized in that: The width of the block (1) is greater than the width of the rail detector (4).

3. The special test block for detecting the resolution of a rail-wheel probe according to claim 1, characterized in that: The length, width, and height of the block (1) are 235 mm, 82 mm, and 100 mm respectively.

4. A special test block for detecting the resolution of a rail wheel probe according to claim 3, characterized in that: The length and depth of the first rectangular groove (2) are 30 mm and 9 mm respectively, and the depth of the second rectangular groove (3) is 15 mm.

5. A special test block for detecting the resolution of a rail wheel probe according to claim 4, characterized in that: The central axis in the vertical direction of the block (1) intersects with the first rectangular groove (2), and the distance between the central axis in the vertical direction of the block (1) and the second rectangular groove (3) is 2 mm.

6. The special test block for detecting the resolution of a rail-wheel probe according to claim 3, characterized in that: The lengths of the first detection cylindrical hole (10) and the third detection cylindrical hole (12) are both 40 mm. The diameter of the first detection cylindrical hole (10) is 40 mm. The diameter of the second detection cylindrical hole (11) is 44 mm. The diameter of the third detection cylindrical hole (12) is 50 mm.

7. A special test block for detecting the resolution of a rail-wheel probe according to claim 1, characterized in that: The block (1) is a special test block of 20# low-carbon steel, and the grain size of the block (1) is 7 - 8 grades.

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