CN107014907B - Flexible probe structure - Google Patents
Flexible probe structure Download PDFInfo
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- CN107014907B CN107014907B CN201710229234.7A CN201710229234A CN107014907B CN 107014907 B CN107014907 B CN 107014907B CN 201710229234 A CN201710229234 A CN 201710229234A CN 107014907 B CN107014907 B CN 107014907B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/24—Probes
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- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention provides a flexible probe structure comprising: the device comprises a base plate unit, a top plate unit, a base plate unit, a middle plate unit, a first vibration source unit and a second vibration source unit, wherein the first vibration source unit and the second vibration source unit are arranged in a staggered mode at intervals, the first vibration source unit penetrates into the base plate unit, the second vibration source unit penetrates into the base plate unit and the middle plate unit layer by layer, the middle plate unit is sleeved on the base plate unit in a hole shaft centering mode, and the top plate unit is sleeved on the middle plate unit in a hole shaft centering mode. In practical application, the flexible probe structure provided by the invention can realize maximization of the acquisition points by adopting square outlines for detection crystals, and can also realize maximization of the acquisition surface by adopting the matrix layout of the 64-bit micro equidistant vibration source units, so that the overall structure is highly compact, and the structure is particularly suitable for high-efficiency multi-point nondestructive detection of a large-curvature surface.
Description
Technical Field
The invention relates to the field of nondestructive testing, in particular to a flexible probe structure.
Background
The two-dimensional area array flexible probe is mainly used for phased array ultrasonic nondestructive testing of non-flat surface materials or workpieces. The traditional A-type pulse ultrasonic detection technology is mainly used for flattening and filling surface fluctuation by applying enough viscous coupling agent to couple on a non-flat surface, scanning by a contact method or immersing in water in a water tank for detection. The former method has the problems of inaccurate positioning of detection defects, uneven sensitivity and the like caused by the change of the coupling layer thickness; the latter method can only be used for off-site detection of specific dimensions. The two-dimensional area array flexible probe can overcome the disadvantages of the two modes. According to the fluctuation of the surface state, the expansion and contraction amount of each array element is adaptively adjusted, and the ultrasonic detection of the non-flat surface by the industrial field contact method is realized. By combining with the phased array technology, a preset focusing rule is adopted, so that scanning beam and phased array detection imaging meeting the technological requirements are realized.
Disclosure of Invention
The invention aims at overcoming the defects of the existing nondestructive testing technology and provides a flexible probe structure.
To achieve the above object, the present invention provides a flexible probe structure including: the device comprises a base plate unit, a top plate unit, a base plate unit, a middle plate unit, a first vibration source unit and a second vibration source unit, wherein the first vibration source unit and the second vibration source unit are arranged in a staggered mode at intervals, the first vibration source unit penetrates into the base plate unit, the second vibration source unit penetrates into the base plate unit and the middle plate unit layer by layer, the middle plate unit is sleeved on the base plate unit in a hole shaft centering mode, and the top plate unit is sleeved on the middle plate unit in a hole shaft centering mode.
The first vibration source unit includes: the vibration source body, the detection crystal adhered and attached to the vibration source body, the first guide shaft in a screw thread fastening mode with the vibration source body, the pressure spring sleeved on the notch end face of the vibration source body along the first guide shaft and attached to the notch end face of the vibration source body, and the directional nut in a screw thread screwing mode with the first guide shaft.
Preferably, the directional nuts on the second vibration source units which are staggered and arrayed along the longitudinal columns are clamped on the guide groove seat and are fixedly attached to the base plate, and the 32 groups of first vibration source units are verified to move up and down slightly and freely.
The second vibration source unit includes: the vibration source body, the detection crystal adhered and attached to the vibration source body, the second guide shaft in a threaded fastening mode with the vibration source body, the pressure spring sleeved on the notch end face of the vibration source body along the second guide shaft and attached to the vibration source body, and the directional nut in a threaded screwing mode with the second guide shaft.
Preferably, the directional nuts on the second vibration source units which are staggered and arrayed along the longitudinal columns are clamped on the guide groove seat and are fixedly attached to the middle disc, and the 32 groups of second vibration source units are verified to move up and down slightly and freely.
Preferably, the vibration source body is in a 64-point matrix layout, the square section is 5×5mm, the interval between the outer contours is 0.1mm, so as to meet the detection application requirement of multi-point high-density layout, and therefore, an up-down jump layer space layout structure mode of alternate equidistant planar array layout is adopted between the first vibration source unit and the second vibration source unit.
The base unit includes: the base plate is embedded into the linear bearings and the guide groove seats in the base plate in sequence in a hole axis mode according to a transverse row and longitudinal row staggered arrangement mode.
Preferably, the guide slot seat includes: the guiding cavity containing the directional nut is stuck to the signal lead outlet of the detection crystal of the vibration source body.
Preferably, the base plate includes: the positioning cylindrical hole is used for bearing the linear bearing, and the channel hole is used for allowing the second guide shaft in the second vibration source unit to penetrate.
The middle plate unit includes: the middle disc is embedded with the linear bearing.
Preferably, the middle plate includes: the positioning cylindrical hole is used for bearing the linear bearing, and the wire outlet is used for leading out a signal wire which is stuck to the detection crystal of the vibration source body in the first vibration source unit.
The upper disc unit includes: and (5) feeding a disc.
Preferably, the upper tray includes: the device comprises an outlet for leading out 64 groups of detection crystal collecting signal wires adhered to the vibration source body, a joint surface circumferentially distributed with the moving object and screw holes connected with the joint surface.
In practical application, the flexible probe structure provided by the invention can realize maximization of the acquisition points by adopting square outlines for detection crystals, and can also realize maximization of the acquisition surface by adopting the matrix layout of the 64-bit micro equidistant vibration source units, so that the overall structure is highly compact, and the structure is particularly suitable for high-efficiency multi-point nondestructive detection of a large-curvature surface.
Drawings
FIG. 1 is a schematic diagram of an axial view of a structure according to the present invention;
FIG. 2 is a schematic diagram of a front view of a structure according to the present invention;
FIG. 3 is a right side view of the structure of the present invention;
FIG. 4 is a schematic diagram illustrating an axial measurement of a top disk unit according to the present invention;
FIG. 5 is a schematic diagram illustrating an axial measurement of a base unit according to the present invention;
FIG. 6 is a schematic view of a partial isometric view of a base unit according to the present invention;
FIG. 7 is a schematic diagram of a chassis axis measurement provided by the present invention;
FIG. 8 is a schematic diagram illustrating an axial measurement of a guide slot seat according to the present invention;
FIG. 9 is a schematic diagram illustrating an axial measurement of a middle disk unit according to the present invention;
FIG. 10 is a schematic view of a partial isometric view of a middle plate unit according to the present invention;
FIG. 11 is a schematic illustration of a center plate axis measurement provided by the present invention;
FIG. 12 is a schematic cross-sectional view of a first vibration source unit according to the present invention;
fig. 13 is a schematic cross-sectional view of a second vibration source unit according to the present invention.
Detailed Description
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Fig. 1 is a schematic structural axis view provided by the present invention, fig. 2 is a schematic structural front view provided by the present invention, and fig. 3 is a schematic structural right view provided by the present invention, where the flexible probe structure includes: a top disk unit 1, a base disk unit 2, a middle disk unit 3, a first vibration source unit 4 and a second vibration source unit 5; the first vibration source units 4 and the second vibration source units 5 are arranged in a staggered mode at intervals, the first vibration source units 4 penetrate into the base plate unit 2, the second vibration source units 5 penetrate into the base plate unit 2 and the middle plate unit 3 layer by layer, the middle plate unit 3 is sleeved on the base plate unit 2 in a hole shaft centering mode, and the upper plate unit 1 is sleeved on the middle plate unit 3 in a hole shaft centering mode.
Fig. 4 is a schematic axial view of an upper disc unit according to the present invention, where the upper disc unit 1 includes: an upper tray 16.
Specifically, the upper tray 16 includes: the detecting crystal 10 used for leading out 64 groups is stuck to the vibration source body 11, an outlet 16-1 for collecting signal wires, a joint surface 16-2 which is circumferentially distributed with a moving object, and a screw hole 16-3 which is connected with the joint surface 16-2.
Fig. 5 is a schematic axial view of a base unit according to the present invention, fig. 6 is a schematic partial axial view of a base unit according to the present invention, and fig. 7 is a schematic axial view of a base unit according to the present invention, where the base unit 2 includes: the base plate 6 is embedded into the linear bearings 8 and the guide groove seats 7 in the base plate 6 in sequence in a hole axis mode according to a transverse row and longitudinal row staggered arrangement mode.
Specifically, the base plate 6 includes: the positioning cylindrical hole 6-1 and the channel hole 6-2, the positioning cylindrical hole 6-1 is used for bearing the linear bearing 8, and the channel hole 6-2 is used for penetrating the second guide shaft 15 in the second vibration source unit 5.
Fig. 8 is a schematic axial view of a guide slot seat according to the present invention, where the guide slot seat 7 includes: the guiding cavity 7-1 containing the orientation nut 14 is stuck to the signal wire outlet 7-2 of the detection crystal 10 of the vibration source body 11.
Fig. 9 is a schematic axial view of a middle disc unit provided by the present invention, fig. 10 is a schematic partial axial view of a middle disc unit provided by the present invention, and fig. 11 is a schematic axial view of a middle disc unit provided by the present invention, where the middle disc unit 3 includes: a middle disc 9, and the linear bearing 8 is embedded in the middle disc 9.
Specifically, the center plate 9 includes: the positioning cylindrical hole 9-1 and the lead outlet 9-2, the positioning cylindrical hole 9-1 is used for bearing the linear bearing 8, and the lead outlet 9-2 is used for leading out a signal lead of the detection crystal 10 adhered to the vibration source body 11 in the first vibration source unit 4.
Fig. 12 is a schematic cross-sectional view of a first vibration source unit provided by the present invention, where the first vibration source unit 4 includes: the vibration source body 11, the detection crystal 10 adhered and attached to the vibration source body 11, the first guide shaft 13 in a screw thread fastening mode with the vibration source body 11, the pressure spring 12 sleeved and attached to the notch end face of the vibration source body 11 along the first guide shaft 13, and the directional nut 14 in a screw thread screwing mode with the first guide shaft 13.
Specifically, the directional nuts 14 on the first vibration source units 4 which are staggered and arrayed along the longitudinal columns are clamped on the guide groove seat 7 and are fixedly attached to the base plate 6, and the 32 groups of first vibration source units 4 are verified to move up and down freely.
Fig. 13 is a schematic cross-sectional view of a second vibration source unit according to the present invention, where the second vibration source unit 5 includes: the vibration source body 11, the detection crystal 10 adhered and attached to the vibration source body 11, the second guide shaft 15 in a screw thread fastening mode with the vibration source body 11, the pressure spring 12 sleeved and attached to the notch end face of the vibration source body 11 along the second guide shaft 15, and the directional nut 14 in a screw thread screwing mode with the second guide shaft 15.
Specifically, the directional nuts 14 on the second vibration source units 5 which are staggered and arrayed along the longitudinal columns are clamped on the guide groove seat 7 and are fixedly attached to the middle disc 9, and the 32 groups of second vibration source units 5 are verified to move up and down freely.
Specifically, the square section of the vibration source body 11 is 5×5mm, the outer contour distance between the vibration source bodies 11 in a 64-point matrix layout is 0.1mm, so as to meet the detection application requirement of the multi-point high-density layout, and therefore, an up-and-down jump layer space layout structure mode of alternating equidistant planar array layout is adopted between the first vibration source unit 4 and the second vibration source unit 5.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (1)
1. A flexible probe structure comprising: the device comprises an upper disc unit (1), a base disc unit (2), a middle disc unit (3), a first vibration source unit (4) and a second vibration source unit (5); wherein the first vibration source units (4) and the second vibration source units (5) are arranged in a staggered mode at intervals; the first vibration source unit (4) penetrates into the base plate unit (2), and the second vibration source unit (5) penetrates into the base plate unit (2) and the middle plate unit (3) layer by layer; the middle disc unit (3) is sleeved on the base disc unit (2) in a hole shaft centering mode; the upper disc unit (1) is sleeved on the middle disc unit (3) in a hole shaft centering mode; an alternating equidistant planar array layout up-down jump layer type space layout structure mode is adopted between the first vibration source unit (4) and the second vibration source unit (5);
the first vibration source unit (4) includes: the vibration source body (11), the detection crystal (10) adhered to the vibration source body (11), the first guide shaft (13) which is in a screw thread fastening mode with the vibration source body (11), the pressure spring (12) which is sleeved and adhered to the notch end face of the vibration source body (11) along the first guide shaft (13), and the directional nut (14) which is in a screw thread screwing mode with the first guide shaft (13);
the second vibration source unit (5) includes: the vibration source body (11), the detection crystal (10) adhered to the vibration source body (11), the second guide shaft (15) in a threaded fastening mode with the vibration source body (11), the pressure spring (12) sleeved on the notch end face of the vibration source body (11) along the second guide shaft (15) and adhered to the notch end face of the vibration source body, and the directional nut (14) in a threaded screwing mode with the second guide shaft (15);
the vibration source bodies (11) are in 64-point matrix layout, the square section is 5 multiplied by 5mm, and the interval between outer contours is 0.1mm;
the base unit (2) includes: a base plate (6) which is embedded into a linear bearing (8) and a guide groove seat (7) in the base plate (6) in sequence in a hole axis mode according to a transverse row and a longitudinal row staggered arrangement; the guide groove seat (7) comprises: a guiding inner cavity (7-1) containing the directional nut (14), and a signal wire outlet (7-2) adhered to the detection crystal (10) of the vibration source body (11); the base plate (6) includes: a positioning cylindrical hole (6-1) and a channel hole (6-2), wherein the positioning cylindrical hole (6-1) is used for bearing a linear bearing (8), and the channel hole (6-2) is used for penetrating a second guide shaft (15) in the second vibration source unit (5);
the center tray unit (3) includes: a middle disc (9), wherein the linear bearing (8) is embedded into the middle disc (9); the middle plate (9) comprises: a positioning cylindrical hole (9-1) and a lead wire outlet (9-2), wherein the positioning cylindrical hole (9-1) is used for bearing a linear bearing (8); the lead outlet (9-2) is used for leading out a signal lead of a detection crystal (10) adhered to the vibration source body (11) in the first vibration source unit (4);
the upper tray unit (1) includes: an upper plate (16); the upper tray (16) comprises: the detecting crystal (10) used for leading out 64 groups is stuck to the vibration source body (11), an outlet (16-1) for collecting signal wires, a joint surface (16-2) which is circumferentially distributed with a moving object, and a screw hole (16-3) which is connected with the joint surface (16-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229234.7A CN107014907B (en) | 2017-04-10 | 2017-04-10 | Flexible probe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710229234.7A CN107014907B (en) | 2017-04-10 | 2017-04-10 | Flexible probe structure |
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| Publication Number | Publication Date |
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| CN107014907A CN107014907A (en) | 2017-08-04 |
| CN107014907B true CN107014907B (en) | 2023-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710229234.7A Active CN107014907B (en) | 2017-04-10 | 2017-04-10 | Flexible probe structure |
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| CN (1) | CN107014907B (en) |
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