CN109212036B - Ultrasonic probe clamp for rail flaw detection - Google Patents
Ultrasonic probe clamp for rail flaw detection Download PDFInfo
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- CN109212036B CN109212036B CN201811353697.5A CN201811353697A CN109212036B CN 109212036 B CN109212036 B CN 109212036B CN 201811353697 A CN201811353697 A CN 201811353697A CN 109212036 B CN109212036 B CN 109212036B
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- ultrasonic probe
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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
- G01N29/225—Supports, positioning or alignment in moving situation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
- B61K9/10—Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
-
- 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
- G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
- G01N29/265—Arrangements for orientation or scanning by relative movement of the head and the sensor by moving the sensor relative to a stationary material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0234—Metals, e.g. steel
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention discloses a rail flaw detection ultrasonic probe clamp which comprises a mounting base with a hollow inside, a mounting frame body which is arranged in the mounting base and is hollow inside, and a probe mounting plate which is horizontally and rotatably arranged at the top of the mounting frame body and is used for mounting an ultrasonic probe; the top of the mounting frame body is provided with a plurality of support flanges which extend towards the center and are used for supporting the bottom surface of the probe mounting plate, the surfaces of the support flanges are provided with arc grooves, and the side edges of the probe mounting plate are provided with arc flanges which are used for being matched with the arc grooves to rotate. So, through the cooperation rotation of the arc flange on the probe mounting panel and the arc groove on the bearing flange at installation framework top, realize the horizontal rotary motion of probe mounting panel on the installation framework, and then drive ultrasonic probe and carry out horizontal rotation in step, consequently, when carrying out ultrasonic flaw detection, ultrasonic probe can adjust the physics angle of deflection at any time, the reinforcing covers the inside and outside of railhead, and then improves supersound coverage rate and adaptability.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to a rail flaw detection ultrasonic probe clamp.
Background
With the development of traffic technology, more and more rail transit vehicles have been widely used.
Rail transit vehicles are of many kinds, such as subways, light rails, high-speed rails, trams, and rail-engineering vehicles. The safe operation of rail transit vehicles is not only related to itself, but also to the quality of the laying of the rail.
Rail flaw detection is the basis of railway transportation, and ensuring that the rail operation state is good is an important measure for ensuring railway transportation safety. The rail is detected periodically by a large-scale rail flaw detection vehicle with the running speed of 80 km/h at home, and the rail flaw detection vehicle is provided with an ultrasonic detection system for detecting the flaw of the rail. The ultrasonic rail flaw detection system detects rail flaws according to ultrasonic echoes reflected by the rail flaws, and when an ultrasonic probe is used for rail flaw detection, the ultrasonic probe is ensured to transmit and receive correct ultrasonic waves on the rail by using a corresponding structure.
At present, a common structure on a rail flaw detection vehicle is a wheel type structure, namely, a probe is installed in a probe wheel, and ultrasonic wave emission and receiving are carried out along with the movement of the probe wheel on a steel rail. In order to ensure that ultrasonic waves of an ultrasonic probe can be emitted and incident stably, a probe clamp is required to be installed, and good adhesion between the surface of the probe and the surface of a workpiece to be tested can be ensured.
In the prior art, an ultrasonic probe is generally directly installed and fixed in a clamp, the probe cannot deflect at a physical angle in the clamp, the ultrasonic probe in the clamp can only emit ultrasonic detection waves at different angles along the direction parallel to a steel rail, so that the inner side and the outer side of the rail head of the steel rail cannot be effectively covered, a detection blind area appears, and the ultrasonic detection effect is poor. Meanwhile, the probe cannot be twisted, so that the flexibility and the adaptability of the ultrasonic probe layout according to the detection requirements of the rails in different actual shapes are poor.
Therefore, how to flexibly adjust the deflection direction when the ultrasonic probe works according to the needs, improve the ultrasonic coverage area and the adaptability to tracks with different shapes, avoid the occurrence of detection dead zones, and solve the technical problem to be solved urgently by the technicians in the field.
Disclosure of Invention
The invention aims to provide a rail flaw detection ultrasonic probe clamp, which can flexibly adjust the deflection direction according to the needs when an ultrasonic probe works, improve the ultrasonic coverage area and the adaptability to rails in different shapes, and avoid the occurrence of detection blind areas.
In order to solve the technical problems, the invention provides a rail flaw detection ultrasonic probe clamp, which comprises a mounting base with a hollow inside, a mounting frame body which is arranged in the mounting base and is hollow inside, and a probe mounting plate which is arranged at the top of the mounting frame body in a horizontal rotating manner and is used for mounting an ultrasonic probe; the top of installation framework is provided with a plurality of slices to the central extension and is used for the bearing flange of probe mounting panel bottom surface, be provided with the arc wall on the surface of bearing flange, just be provided with on the side of probe mounting panel be used for with arc wall cooperation pivoted arc flange.
Preferably, a scale groove for marking the deflection angle of the probe mounting plate relative to the arc-shaped groove is arranged on the surface of the arc-shaped flange.
Preferably, limiting plates for abutting against the inner wall of the mounting frame body in the rotation process of the probe mounting plate are arranged at two ends of the probe mounting plate so as to limit the maximum deflection angle of the probe mounting plate.
Preferably, the probe mounting plate is further provided with a fastener on a surface thereof for detachably connecting with an ultrasonic probe mounted on a bottom surface thereof.
Preferably, a fastening bolt for fastening the probe mounting plate in a current state after the rotation angle adjustment of the probe mounting plate is completed is further provided on the outer wall of the mounting frame.
Preferably, the outer wall of the installation frame body can be vertically and slidably clung to the inner wall of the installation base, and a baffle plate which extends inwards and is used for supporting the bottom of the installation frame body is arranged on the inner wall of the bottom of the installation base.
Preferably, a top plate is arranged at the top of the mounting base, and a telescopic pressing mechanism for pressing the surface of the probe mounting plate is arranged at the bottom of the top plate.
Preferably, the clamping columns extending outwards are arranged on the two side edges of the pressing mechanism, and the two side edges of the top plate are respectively provided with a reversible buckle for clamping the clamping columns.
Preferably, the pressing mechanism is specifically an air cylinder, a hydraulic cylinder or a spring type pressing device.
Preferably, the bottom surface of the mounting base is provided with a water outlet nozzle for spraying the ultrasonic coupling liquid.
The invention provides a rail flaw detection ultrasonic probe clamp which mainly comprises a mounting base, a mounting frame body and a probe mounting plate. The mounting base is of a main body structure of the clamp, is hollow, and is mainly used for mounting and bearing other parts, and when the mounting base is used, the bottom of the mounting base is required to be pressed on the surface of a workpiece to be tested (such as a steel rail) so that the surface of an ultrasonic probe mounted in the mounting base is tightly attached to the surface of the workpiece to be tested. The installation framework is arranged in the installation base and is hollow in the same, and is mainly used for installing the probe installation plate. The probe mounting plate can be horizontally and rotatably arranged at the top of the mounting frame body and is mainly used for mounting the ultrasonic probe so that the ultrasonic probe can synchronously rotate along with the ultrasonic probe. The top of installation framework is provided with the bearing flange that a plurality of slices extend to central direction, and the bottom surface side of probe mounting panel just places on this bearing flange, provides its holding power by the bearing flange to be provided with the arc wall on the surface of bearing flange, be provided with the arc flange on the side of probe mounting panel simultaneously, the radian of this arc flange is the same with the arc wall, and both can hug closely and relatively rotate to make the probe mounting panel can carry out horizontal rotary motion smoothly. Therefore, the rail flaw detection ultrasonic probe clamp provided by the invention can smoothly realize the horizontal rotation motion of the probe mounting plate on the mounting frame body through the matching rotation of the arc-shaped flange on the probe mounting plate and the arc-shaped groove on the bearing flange on the top of the mounting frame body, so that the ultrasonic probe is driven to synchronously rotate horizontally, and therefore, when the ultrasonic flaw detection is carried out, the ultrasonic probe can adjust the physical deflection angle at any time, the inner side and the outer side of the rail head are enhanced, the ultrasonic coverage rate and the adaptability to rails in different shapes are further improved, and the occurrence of detection blind areas is effectively avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic overall structure of an embodiment of the present invention.
FIG. 2 is a comparative schematic view of the pitch angle of view of the particular assembly of the mounting frame and probe mounting plate shown in FIG. 1.
Fig. 3 is a longitudinal sectional view of fig. 1.
Fig. 4 is a bottom view of fig. 1.
Wherein, in fig. 1-4:
the ultrasonic probe comprises a mounting base-1, a baffle-101, a top plate-102, a mounting frame-2, a bearing flange-201, an arc groove-202, a probe mounting plate-3, an arc flange-301, a limiting plate-302, a scale slot-4, a fastener-5, a fastening bolt-6, a pressing mechanism-7, a clamping post-701, a buckle-702, a water outlet nozzle-8 and an ultrasonic probe-9.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, fig. 1 is a schematic overall structure diagram of an embodiment of the present invention, and fig. 2 is a pitch view angle comparison schematic diagram of a specific assembly structure of the mounting frame 2 and the probe mounting plate 3 shown in fig. 1.
In one specific embodiment provided by the invention, the rail inspection ultrasonic probe clamp mainly comprises a mounting base 1, a mounting frame 2 and a probe mounting plate 3.
The installation base 1 is a main body structure of the fixture, is hollow, and is mainly used for installing and bearing other parts, and when the fixture is used, the bottom of the installation base 1 is required to be pressed on the surface of a workpiece to be detected (such as a steel rail and the like), so that the surface of an ultrasonic probe 9 installed in the fixture is tightly attached to the surface of the workpiece to be detected. In general, the mounting base 1 may have a rectangular or circular hollow cylindrical shape, and one, two or more cavities may be provided on the mounting base 1 according to the mounting requirement, and one, two or more ultrasonic probes 9 may be mounted on the fixture.
The mounting frame 2 is provided in the mounting base 1 and is also hollow in the interior, mainly for mounting the probe mounting plate 3. Specifically, the mounting frame 2 may have a rectangular or circular hollow cylindrical shape, and the outer wall thereof may be closely attached to the inner wall of the mounting base 1.
The probe mounting plate 3 is horizontally rotatably arranged at the top of the mounting frame 2, and is mainly used for mounting the ultrasonic probe 9 so that the ultrasonic probe 9 can synchronously rotate along with the ultrasonic probe, generally, the ultrasonic probe 9 can be mounted on the bottom surface of the probe mounting plate 3, and the length or the height of the ultrasonic probe 9 is generally flush with the bottom surface of the mounting base 1, so that the ultrasonic probe is tightly attached to the surface of a workpiece to be measured.
A plurality of support flanges 201 extending in the center direction are provided on the top of the mounting frame 2, and the bottom side of the probe mounting plate 3 is placed on the support flanges 201, so that the support flanges 201 provide support force. Generally, the support flange 201 may be disposed on both front and rear sides of the mounting frame 2, and may have a rectangular or trapezoid structure, and the edge of the probe mounting plate 3 may be pressed against the support flange 201 by gravity.
An arc groove 202 is formed in the surface of the support flange 201, the arc groove 202 can be recessed inwards by a certain angle, meanwhile, an arc flange 301 is arranged on the side edge of the probe mounting plate 3, the radian of the arc flange 301 is the same as that of the arc groove 202, the curvature is the same, and the arc flange can be clung to and rotate relatively to each other, so that the probe mounting plate 3 can smoothly perform horizontal rotation motion.
Thus, the rail inspection ultrasonic probe fixture provided by the embodiment can smoothly realize the horizontal rotation motion of the probe mounting plate 3 on the mounting frame 2 through the matching rotation of the arc-shaped flange 301 on the probe mounting plate 3 and the arc-shaped groove 202 on the bearing flange 201 on the top of the mounting frame 2, and further drive the ultrasonic probe 9 to synchronously perform horizontal rotation, so that the ultrasonic probe can adjust the physical deflection angle at any time when performing ultrasonic inspection detection, enhance the inner and outer coverage of the rail head, further improve the ultrasonic coverage rate and the adaptability to rails in different shapes, and effectively avoid the occurrence of detection blind areas.
In order to make the technical manager clearly know the deflection angle of the current ultrasonic probe 9, in this embodiment, the scale wire grooves 4 are arranged on the surface of the arc-shaped flange 301, meanwhile, the mark center line can be arranged on the arc-shaped groove 202, and the combination of the scale wire grooves and the mark center line can make the technical manager know the deflection angles of the probe panel 3 and the ultrasonic probe 9. In general, the tick grooves 4 may identify a deflection angle between-40 ° and +40°.
Further, in view of the fact that the deflection angle of the ultrasonic probe 9 is not too large, the present embodiment adds the limiting plates 302 at both end positions of the probe mounting plate 3. Specifically, the limiting plate 302 may be rectangular, and when the probe mounting plate 3 rotates horizontally, the corner of the limiting plate 302 will form an abutment with the inner wall of the mounting frame 2 at a certain angle to prevent the probe mounting plate 3 from continuing to rotate in the same direction, and the angle is the maximum deflection angle of the probe mounting plate 3, which may be ±40°, generally.
Further, in consideration of the fact that the technician needs to maintain the ultrasonic probe 9 at the current deflection angle in the subsequent flaw detection process after adjusting the deflection angle of the ultrasonic probe 9, for this reason, the present embodiment adds the fastening bolts 6 to the outer wall of the mounting frame 2. The fastening bolts 6 penetrate from the outer wall of the mounting frame 2, and the distal ends penetrate into the probe mounting plate 3. When the deflection angle of the ultrasonic probe 9 needs to be adjusted, the fastening bolt 6 is firstly loosened so that the probe mounting plate 3 can freely and horizontally rotate, and then after the adjustment of the rotation angle is completed, the fastening bolt 6 is tightened again so that the probe mounting plate 3 and the ultrasonic probe 9 are fixed at the current deflection angle position.
In addition, in order to facilitate the installation, disassembly and maintenance of the ultrasonic probe 9 by a technician, the present embodiment provides the mounting hole and the fastener 5 fitted thereto on the surface of the probe mounting plate 3, by which fastener 5 the probe mounting plate 3 and the ultrasonic probe 9 provided on the bottom surface thereof can be connected as one body, while the disassembly and assembly of the ultrasonic probe 9 can be conveniently achieved by the screwing operation of the fastener 5. In particular, the fastener 5 may be a rivet or screw or the like.
As shown in fig. 3, fig. 3 is a longitudinal sectional view of fig. 1.
In addition, in order to ensure stable installation of the installation frame body 2 in the installation base 1 and close adhesion of the ultrasonic probe 9 and the surface of the workpiece to be measured, in this embodiment, the outer wall of the installation frame body 2 is close to the inner wall of the installation base 1, and the installation frame body 2 can slide vertically relative to the installation base 1, meanwhile, a baffle plate 101 extending inwards is arranged on the inner wall of the bottom of the installation base 1 so as to abut against the bottom of the installation frame and prevent the installation frame from falling off from the installation base 1.
Further, in order to improve the adhesion degree between the surface of the ultrasonic probe 9 and the surface of the workpiece to be tested, and improve the defect detection rate and the ultrasonic coverage area of the ultrasonic probe 9, in this embodiment, the top plate 102 is additionally arranged at the top of the mounting base 1, and the top plate 102 may be in a roof-type structure and is inversely buckled at the top of the mounting base 1. Meanwhile, the bottom of the top plate 102 is provided with the pressing mechanism 7, the pressing mechanism 7 can vertically stretch and retract, and after a certain length of vertical stretching, the pressing mechanism 7 can be abutted with the surface of the probe mounting plate 3 and can be pressed down, so that the bonding tightness degree of the surface of the ultrasonic probe 9 and the surface of a workpiece to be tested is improved.
In particular, the hold-down mechanism 7 may be a cylinder. Of course, the device can also be an oil cylinder or other mechanical telescopic structures, such as a spring type pressing device, etc., which are not described herein.
Further, in order to ensure the stress stability of the pressing mechanism 7 when the probe mounting head is pressed, the embodiment is provided with outwardly extending clamping posts 701 on two sides of the pressing mechanism 7, and simultaneously provided with buckles 702 on two sides of the top plate 102. The buckle 702 can turn over on the side edge of the top plate 102, and when the buckle turns over to the vertical direction, the tail end of the clamping column 701 can be clamped tightly and form stable clamping, so that the installation stability and the stress stability of the pressing mechanism 7 are ensured.
As shown in fig. 4, fig. 4 is a bottom view of fig. 1
In addition, considering that the ultrasonic probe 9 often needs the assistance of the ultrasonic coupling liquid to have higher precision when working, for this reason, the present embodiment sets the water outlet nozzle 8 on the bottom surface of the mounting base 1, and can spray the ultrasonic coupling liquid of the external pipeline onto the surface of the workpiece to be tested.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The rail flaw detection ultrasonic probe clamp is characterized by comprising a mounting base (1) with a hollow inside, a mounting frame (2) arranged in the mounting base (1) and with a hollow inside, and a probe mounting plate (3) which is horizontally and rotatably arranged at the top of the mounting frame (2) and is used for mounting an ultrasonic probe; a plurality of support flanges (201) extending towards the center and used for supporting the bottom surface of the probe mounting plate (3) are arranged at the top of the mounting frame body (2), arc-shaped grooves (202) are formed in the surfaces of the support flanges (201), and arc-shaped flanges (301) used for being matched with the arc-shaped grooves (202) to rotate are arranged on the side edges of the probe mounting plate (3); the surface of the probe mounting plate (3) is also provided with a fastener (5) for forming detachable connection with the ultrasonic probe arranged on the bottom surface of the probe mounting plate; the outer wall of the mounting frame body (2) is also provided with a fastening bolt (6) for fastening the probe mounting plate (3) in the current state after the rotation angle of the probe mounting plate is adjusted; a top plate (102) is arranged at the top of the mounting base (1), and a telescopic pressing mechanism (7) used for pressing the surface of the probe mounting plate (3) is arranged at the bottom of the top plate (102); the fastener (5) is a rivet or screw.
2. The rail inspection ultrasonic probe fixture according to claim 1, characterized in that a scale groove (4) identifying the deflection angle of the probe mounting plate (3) relative to the arc groove (202) is provided on the surface of the arc flange (301).
3. The rail inspection ultrasonic probe fixture according to claim 2, characterized in that limiting plates (302) for abutting against the inner wall of the mounting frame (2) during rotation of the probe mounting plate (3) to limit the maximum deflection angle of the probe mounting plate (3) are provided on both ends of the probe mounting plate (3).
4. A rail inspection ultrasonic probe clamp according to any one of claims 1-3, characterized in that the outer wall of the mounting frame (2) is vertically slidably attached to the inner wall of the mounting base (1), and the inner wall of the bottom of the mounting base (1) is provided with a baffle (101) extending inwards and used for supporting the bottom of the mounting frame (2).
5. The rail inspection ultrasonic probe fixture according to claim 4, wherein the clamping posts (701) extending outwards are arranged on two side edges of the pressing mechanism (7), and the clamping posts (701) are respectively arranged on two side edges of the top plate (102) and can be turned over to clamp the clamping posts (702).
6. The rail inspection ultrasonic probe fixture according to claim 5, characterized in that the hold-down mechanism (7) is in particular a cylinder, a hydraulic cylinder or a spring hold-down device.
7. The rail inspection ultrasonic probe fixture according to claim 6, characterized in that the bottom surface of the mounting base (1) is provided with a water outlet nozzle (8) for spraying ultrasonic coupling liquid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353697.5A CN109212036B (en) | 2018-11-14 | 2018-11-14 | Ultrasonic probe clamp for rail flaw detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811353697.5A CN109212036B (en) | 2018-11-14 | 2018-11-14 | Ultrasonic probe clamp for rail flaw detection |
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| CN109212036A CN109212036A (en) | 2019-01-15 |
| CN109212036B true CN109212036B (en) | 2023-09-15 |
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Families Citing this family (1)
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| CN109856239A (en) * | 2019-03-26 | 2019-06-07 | 上海同玺电子科技有限公司 | A kind of break monitoring device of switch zones rail assemblies |
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