CN204832120U - EMUs hole -bored axle from end to end ultrasonic inspection probe - Google Patents
EMUs hole -bored axle from end to end ultrasonic inspection probe Download PDFInfo
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- CN204832120U CN204832120U CN201520589322.4U CN201520589322U CN204832120U CN 204832120 U CN204832120 U CN 204832120U CN 201520589322 U CN201520589322 U CN 201520589322U CN 204832120 U CN204832120 U CN 204832120U
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Abstract
The utility model discloses a EMUs hole -bored axle from end to end ultrasonic inspection probe, it includes: probe shell and voussoir, the voussoir with a sealed inner space is injectd on the upper portion of probe shell, wherein, the voussoir sets up to convex, the piezoelectricity wafer, it sets up in the inner space, just the piezoelectricity wafer adopts piezoelectricity combined material to make. Because the voussoir is convex, can make the in -process of detecting a flaw, and the probe can closely be laminated with the axletree hole, and because the piezoelectricity wafer adopts piezoelectricity combined material to make, has high sensitivity, high electro -mechanical coupling factor, narrow pulse width's advantage.
Description
Technical field
The utility model relates to a kind of probe.More particularly, the utility model relates to a kind of motor train unit hollow car-axle supersonic inspection probe.
Background technology
The flaw detection of motor train unit hole-bored axle from end to end is the important component part of motor train unit utilization overhaul system.Flaw detection probe is the core component of defect-detecting equipment, and its quality and performance are directly connected to the accuracy that axletree is detected a flaw.The design of probe not only needs to consider the contingent defect type of detected object, orientation, size, also needs the surface characteristics considering detected object simultaneously.The flaw detection of motor train unit hole-bored axle from end to end, except requiring that probe possesses except good performance, also needs the applicable requirement being undertaken detecting a flaw by axletree mesopore simultaneously.In addition, the axletree diameter of bore that harmonious serial motor train unit various is different also brings certain difficulty to design and development.
Along with a large amount of online operation of China Express Railway motor train unit, corresponding motor train unit hole-bored axle from end to end defect-detecting equipment also matching running thereupon.The ultrasonic-wave flaw-detecting probe that current hole-bored axle from end to end defect-detecting equipment uses is all import, price is high, delivery cycle is long, cannot configure in a large number, and its major technique rests in foreign supplier hand, once there is the situation available without probe that short supply, stopping production, technical limitation or other factors cause, by the situation causing flaw detection operation to stop production comprehensively, motor train unit safety cannot be ensured when the time comes, normally, constantly run.Therefore need to set about immediately to domesticize the research of motor train unit hollow car-axle supersonic inspection dedicated probe, design, exploitation, production, test and application.
Utility model content
The purpose of this utility model is to provide that a kind of cheap, stable performance, delivery cycle are short, testing result domesticizes motor train unit hollow car-axle supersonic inspection dedicated probe reliably, and provides the advantage that will illustrate at least below.
In order to realize according to these objects of the present utility model and other advantage, provide a kind of motor train unit hollow car-axle supersonic inspection probe, it comprises:
Probing shell and voussoir, restriction inner space sealed of described voussoir and described probing shell, wherein, described voussoir is set to circular arc, probe is extend into axletree endoporus to detect, and the voussoir of circular arc can fit tightly with axletree, improve flaw detection ability;
And piezoelectric chip, it is arranged in described inner space, and described piezoelectric chip adopts piezo-electricity composite material to make, owing to having the vibration mode different from conventional ceramic wafer, this wafer has the features such as high sensitivity, high electromechanical coupling factor, narrow pulse width.
Preferably, described motor train unit hollow car-axle supersonic inspection probe also comprises acoustic impedance matching layer, described acoustic impedance matching layer is between described piezoelectric chip and described voussoir, and the thickness of described acoustic impedance layer is the odd-multiple of ultrasound wave 1/4 wavelength, and the impedance of described acoustic impedance layer is the geometrical mean of described piezoelectric chip and described voussoir impedance, to eliminate the acoustic impedance difference distance between described voussoir acoustic impedance and described piezoelectric chip, reduce hyperacoustic reflection, and ensure the low-loss of ultrasonic propagation process.
Preferably, described piezoelectric chip adopts 1-3 type piezo-electricity composite material, and prepared by cutting-completion method, wherein under identical conditions, conventional ceramic wafer probe echo voltage and frequency span are respectively 4.91Vss and 1.55 ~ 2.62MHz, and combined probe is 18.25Vss and 1.12 ~ 2.9MHz, described 1-3 type piezo-electricity composite material substantially increases the sensitivity of system.
Preferably, described voussoir adopts organic glass to make, and its acoustic impedance is 3.2MRayl, carries out acoustic matching, make more sound wave import voussoir into better and piezoelectric chip, thus improves sensitivity, and has wear-resisting, resistant to elevated temperatures feature.
Preferably, described voussoir is R15 arc surface, described motor train unit hollow car-axle supersonic inspection probe comprises three probes, described piezoelectric chip refraction angle is respectively positive axial, negative axially 45 ° and 0 °, wherein positive axial, negative axially 45 ° of shear wave probes are for detecting the transverse defect of outside surface, and direction is perpendicular to the center line of axletree, 0 ° of twin crystal compressional wave normal probe is for detecting the volume flaw of axletree inside.
Preferably, described voussoir is R29.5 arc surface probe, described motor train unit hollow car-axle supersonic inspection probe comprises seven probes, wherein three described piezoelectric chip refraction angles of probe are respectively positive axis, negative axially 45 °, 0 °, wherein axially positive, negative axially 45 ° of shear wave probes are for detecting the transverse defect of outside surface, and direction is perpendicular to the center line of axletree, 0 ° of twin crystal compressional wave normal probe is for detecting the volume flaw of axletree inside, described in other four probes, piezoelectric chip refraction angle is axially positive, negative axially 70 ° and positive radial, negative radial 70 °, for detecting transition arc place, nearly surperficial diatropism defect, axletree outside surface longitudinal defect.
Preferably, also comprise feeler lever, feeler lever is provided with spring assembly, one end of spring assembly is fixed on feeler lever, and the other end connects probing shell, so that described probe is closely adhered to axletree, strengthens the flaw detection ability of described probe.
Preferably, between described voussoir and axletree endoporus, adopt S32 or S68 antiwear hydraulic oil as couplant, probe can be made to drop to floor level with the acoustical energy losses that is coupled of axletree bore area, the sensitivity of elevator system entirety.
Preferably, the detection degree of depth of described motor train unit hollow car-axle supersonic inspection probe is longitudinal angle probe 400mm, and horizontal angle probe 200mm, normal probe 150mm, agree with tested axletree more to make described probe
The utility model at least comprises following beneficial effect: the demand first high for detection sensitivity, sensing range is wide, the utility model includes piezoelectric chip and acoustic impedance matching layer, wherein transducer wafer is for transmitting and receiving ultrasound wave, and it is converted into corresponding electric impulse signal.Owing to having the vibration mode different from conventional ceramic wafer, this wafer has the features such as high sensitivity, high electromechanical coupling factor, narrow pulse width, under identical conditions, conventional ceramic wafer probe echo voltage and frequency span are respectively 4.91Vss and 1.55 ~ 2.62MHz, and combined probe is 18.25Vss and 1.12 ~ 2.9MHz.On this basis, for devising the acoustic matching layer with specific thicknesses and acoustic impedance between piezoelectric chip and voussoir, acoustic energy being propagated more efficient, further increasing the sensitivity of system.
Secondly, traditional solid ultrasonic flaw detection of car axle detects to be implemented at axle end face, and sensing range area coverage is little, and overall sensitivity is very low, and the type that can detect defect is few.And axle of motor train unit endoporus is hollow, probe can be extend into axletree endoporus to detect, utilize this feature, the profile of probe, size, sound beam direction are improved, devise the organic glass voussoir with different arc surface and the riding position of probe wafer is made an adjustment.Probe for the detection of CRH3 type motor train unit hole-bored axle from end to end is the organic glass voussoir adopting R15 arc surface, a set of 3, positive axial, negative axially 45 ° of shear wave probes, 0 ° of twin crystal compressional wave normal probe respectively, wherein two axial shear wave probes are for detecting the transverse defect of outside surface, its direction is perpendicular to the center line of axletree, and 0 ° of twin crystal compressional wave normal probe is for detecting the volume flaw of axletree inside; And be R29.5 for the arc surface radius of the probe of CRH1, CRH2, CRH5 EMUs hollow car-axle supersonic inspection, a set of seven, except having the function of R15 arc surface probe, also have two groups four probes for detecting transition arc place, nearly surperficial diatropism defect, axletree outside surface longitudinal defect.
Voussoir arc surface design corresponding with axletree endoporus aperture can make probe and axletree bore area fit tightly, be aided with S32 or S68 antiwear hydraulic oil again as couplant, probe can be made to drop to floor level with the acoustical energy losses that is coupled of axletree bore area, the sensitivity of elevator system entirety, 1mm surface linear defect and φ 2mm flat-bottom hole defect effectively can be detected in practice principle process, its sound path scope is 8mm-120mm, and can find 0.5mm surface linear defect.
Finally, the riding position that wafer is different can make probe have the acoustic beam of different directions, to reach the diversified object of detection defect type.Other 0 degree of probe adopts twin lamella, face focuses on design, within blind area, near field narrows down to 7mm, volume, the area-type defect on nearly surface effectively can be detected.
Part is embodied by explanation below by other advantage of the present utility model, target and feature, part also will by research and practice of the present utility model by those skilled in the art is understood.
Accompanying drawing explanation
Fig. 1 is front elevation of the present utility model;
Fig. 2 be the clawback signal of conventional ceramic wafer and piezoelectric chip 3 and Frequency spectrum ratio comparatively;
Fig. 3 is the front elevation of the utility model twin crystal compressional wave normal probe;
Fig. 4 is the vertical view of the utility model twin crystal compressional wave normal probe;
Fig. 5 is the design diagram of R15 arc surface voussoir;
Fig. 6 is the design diagram of R29.5 arc surface voussoir.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to instructions word to make those skilled in the art.
Embodiment 1
As shown in Figure 1, the utility model provides a kind of motor train unit hollow car-axle supersonic inspection probe, comprising:
Probing shell 1, described probing shell 1 is in opened upper end;
Voussoir 2, described voussoir 2 is positioned at the top of described probing shell 1, and keep sealing with described probing shell 1, form the inner space of a sealing, wherein, described voussoir 2 is set to circular arc, detects probe to be extend into axletree endoporus, and the voussoir 2 of circular arc can fit tightly with axletree, improve flaw detection ability;
Piezoelectric chip 3, described piezoelectric chip 3 is arranged in described inner space, and described piezoelectric chip adopts 1-3 type piezo-electricity composite material, owing to having the vibration mode different from conventional ceramic wafer, under identical conditions, conventional ceramic wafer probe echo voltage and frequency span are respectively 4.91Vss and 1.55 ~ 2.62MHz, and combined probe is 18.25Vss and 1.12 ~ 2.9MHz, can find out, described 1-3 type piezo-electricity composite material substantially increases the sensitivity of system, this wafer has high sensitivity, high electromechanical coupling factor, the features such as narrow pulse width, as Fig. 2 be the clawback signal of conventional ceramic wafer and piezoelectric chip 3 and Frequency spectrum ratio comparatively,
Acoustic impedance matching layer 4, described acoustic impedance matching layer 4 is between described piezoelectric chip 3 and described voussoir 2, and the thickness of described acoustic impedance layer 4 is the odd-multiple of ultrasound wave 1/4 wavelength, and the impedance of described acoustic impedance layer 4 is the geometrical mean of described piezoelectric chip 3 and described voussoir 2 impedance, to eliminate the acoustic impedance difference distance between described voussoir 2 acoustic impedance and described piezoelectric chip 3, reduce hyperacoustic reflection, and ensure the low-loss of ultrasonic propagation process;
Wherein, described voussoir 2 adopts organic glass to make, and its acoustic impedance is 3.2MRayl, carries out acoustic matching, make more sound wave import voussoir 2 into better and piezoelectric chip 3, thus improves sensitivity, and has wear-resisting, resistant to elevated temperatures feature.
And, described voussoir 2 is R29.5 arc surface, as shown in Figure 6, described motor train unit hollow car-axle supersonic inspection probe includes seven probes, described in each probe, piezoelectric chip refraction angle is respectively positive axis, negative axially 45 °, positive axis, negative axially 70 °, positive radial, negative radial 70 °, 0 °, wherein axially positive, negative axially 45 ° of shear wave probes are for detecting the transverse defect of outside surface, and direction is perpendicular to the center line of axletree, 0 ° of twin crystal compressional wave normal probe is for detecting the volume flaw of axletree inside, the front elevation of described twin crystal compressional wave normal probe and vertical view are respectively as shown in Figure 3 and Figure 4, other four probes are for detecting transition arc place, nearly surperficial diatropism defect, axletree outside surface longitudinal defect.Wherein, described motor train unit hollow car-axle supersonic inspection probe also comprises feeler lever, feeler lever is provided with spring assembly 11, one end of spring assembly 11 is fixed on feeler lever, the other end connects described probing shell 1, so that described voussoir 2 is closely adhered to axletree endoporus, strengthens the flaw detection ability of described probe, when described probe when rotated, described spring assembly 11 is close to axletree endoporus by described for maintenance voussoir 2 formula.Adopt S32 antiwear hydraulic oil as couplant between described voussoir and axletree endoporus, probe can be made to drop to floor level with the acoustical energy losses that is coupled of axletree bore area, the sensitivity of elevator system entirety.
For detecting the flaw detection ability of the motor train unit hollow car-axle supersonic inspection probe obtained in the present embodiment, be longitudinal angle probe 400mm in investigation depth, horizontal angle probe 200mm, diameter 150mm, probe temperature is 25 DEG C ± 3 DEG C, when humidity is 70%, surveys sample obtained probe, and its resolution of comparison and sensitivity, properties all meets the requirement of Its Relevant Technology Standards and functional parameter.
Embodiment 2
As shown in Figure 1, the utility model provides a kind of motor train unit hollow car-axle supersonic inspection probe, comprising:
Probing shell 1, described probing shell 1 is in opened upper end;
Voussoir 2, described voussoir 2 is positioned at the top of described probing shell 1, and keep sealing with described probing shell 1, form the inner space of a sealing, wherein, described voussoir 2 is set to circular arc, detects probe to be extend into axletree endoporus, and the voussoir 2 of circular arc can fit tightly with axletree, improve flaw detection ability;
Piezoelectric chip 3, described piezoelectric chip 3 is arranged in described inner space, and described piezoelectric chip adopts 1-3 type piezo-electricity composite material, owing to having the vibration mode different from conventional ceramic wafer, under identical conditions, conventional ceramic wafer probe echo voltage and frequency span are respectively 4.91Vss and 1.55 ~ 2.62MHz, and combined probe is 18.25Vss and 1.12 ~ 2.9MHz, can find out, described 1-3 type piezo-electricity composite material substantially increases the sensitivity of system, this wafer has high sensitivity, high electromechanical coupling factor, the features such as narrow pulse width, as Fig. 2 be the clawback signal of conventional ceramic wafer and piezoelectric chip 3 and Frequency spectrum ratio comparatively,
Acoustic impedance matching layer 4, described acoustic impedance matching layer 4 is between described piezoelectric chip 3 and described voussoir 2, and the thickness of described acoustic impedance layer 4 is the odd-multiple of ultrasound wave 1/4 wavelength, and the impedance of described acoustic impedance layer 4 is the geometrical mean of described piezoelectric chip 3 and described voussoir 2 impedance, to eliminate the acoustic impedance difference distance between described voussoir 2 acoustic impedance and described piezoelectric chip 3, reduce hyperacoustic reflection, and ensure the low-loss of ultrasonic propagation process;
Wherein, described voussoir 2 adopts organic glass to make, and its acoustic impedance is 3.2MRayl, carries out acoustic matching, make more sound wave import voussoir 2 into better and piezoelectric chip 3, thus improves sensitivity, and has wear-resisting, resistant to elevated temperatures feature.
And, described voussoir 2 is R15 arc surface, as shown in Figure 5, described motor train unit hollow car-axle supersonic inspection probe includes three probes, the refraction angle of described piezoelectric chip 3 is respectively positive axial, negative axially 45 °, 0 °, wherein positive axial, negative axially 45 ° of shear wave probes are for detecting the transverse defect of outside surface, and direction is perpendicular to the center line of axletree, 0 ° of twin crystal compressional wave normal probe is for detecting the volume flaw of axletree inside, and the front elevation of described twin crystal compressional wave normal probe and vertical view are respectively as shown in Figure 3 and Figure 4.Wherein, described motor train unit hollow car-axle supersonic inspection probe also comprises feeler lever, feeler lever is provided with spring assembly 11, one end of spring assembly 11 is fixed on feeler lever, the other end connects described probing shell 1, so that described voussoir 2 is closely adhered to axletree endoporus, strengthens the flaw detection ability of described probe, when described probe when rotated, described spring assembly 11 is close to axletree endoporus by described for maintenance voussoir 2 formula.Adopt S32 antiwear hydraulic oil as couplant between described voussoir and axletree endoporus, probe can be made to drop to floor level with the acoustical energy losses that is coupled of axletree bore area, the sensitivity of elevator system entirety
Although embodiment of the present utility model is open as above, but it is not restricted to listed in instructions and embodiment utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.
Claims (9)
1. a motor train unit hollow car-axle supersonic inspection probe, is characterized in that, comprising:
Probing shell and voussoir, described voussoir and described probing shell limit an inner space sealed, and wherein, described voussoir is set to circular arc;
Piezoelectric chip, it is arranged in described inner space, and described piezoelectric chip adopts piezo-electricity composite material to make.
2. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 1, is characterized in that, also comprise:
Acoustic impedance matching layer, described acoustic impedance matching layer is between described piezoelectric chip and described voussoir, and the thickness of described acoustic impedance layer is the odd-multiple of ultrasound wave 1/4 wavelength, and the impedance of described acoustic impedance layer is the geometrical mean of described piezoelectric chip and described voussoir impedance.
3. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 1, is characterized in that:
Described piezoelectric chip adopts 1-3 type piezo-electricity composite material.
4. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 1, is characterized in that:
Described voussoir adopts organic glass to make, and its acoustic impedance is 3.2MRayl.
5. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 4, is characterized in that:
Described voussoir is R15 arc surface, and described motor train unit hollow car-axle supersonic inspection probe comprises three probes, and described piezoelectric chip refraction angle is respectively positive axial, negative axially 45 ° and 0 °.
6. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 4, is characterized in that:
Described voussoir is R29.5 arc surface probe, described motor train unit hollow car-axle supersonic inspection probe comprises seven probes, piezoelectric chip refraction angle described in each probe is respectively positive axial, negative axially 45 °, positive axially, negative axially 70 °, positive radial, negative radial 70 ° and 0 °.
7. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 1, is characterized in that:
Also comprise feeler lever, feeler lever is provided with spring assembly, one end of spring assembly is fixed on feeler lever, and the other end connects probing shell.
8. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 1, is characterized in that:
Adopt S32 or S68 antiwear hydraulic oil as couplant between described voussoir and axletree endoporus.
9. motor train unit hollow car-axle supersonic inspection probe as claimed in claim 1, is characterized in that:
The detection degree of depth of described motor train unit hollow car-axle supersonic inspection probe is longitudinal angle probe 400mm, horizontal angle probe 200mm, normal probe 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520589322.4U CN204832120U (en) | 2015-08-03 | 2015-08-03 | EMUs hole -bored axle from end to end ultrasonic inspection probe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520589322.4U CN204832120U (en) | 2015-08-03 | 2015-08-03 | EMUs hole -bored axle from end to end ultrasonic inspection probe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053612A (en) * | 2016-07-25 | 2016-10-26 | 河北奥索电子科技有限公司 | Probe for detection of shaft-mounted brake disc hub mounting base of motor train unit and detection method of probe |
| CN106198761A (en) * | 2016-08-31 | 2016-12-07 | 北京主导时代科技有限公司 | A kind of hollow axle ultrasonic examination probe device |
| CN113533518A (en) * | 2021-07-14 | 2021-10-22 | 北京信泰智合科技发展有限公司 | Large-angle longitudinal wave probe and preparation method thereof |
-
2015
- 2015-08-03 CN CN201520589322.4U patent/CN204832120U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053612A (en) * | 2016-07-25 | 2016-10-26 | 河北奥索电子科技有限公司 | Probe for detection of shaft-mounted brake disc hub mounting base of motor train unit and detection method of probe |
| CN106053612B (en) * | 2016-07-25 | 2018-08-31 | 河北奥索电子科技有限公司 | Probe and detection method for the detection of EMU axle-mounted brake disk hub mounting base |
| CN106198761A (en) * | 2016-08-31 | 2016-12-07 | 北京主导时代科技有限公司 | A kind of hollow axle ultrasonic examination probe device |
| CN113533518A (en) * | 2021-07-14 | 2021-10-22 | 北京信泰智合科技发展有限公司 | Large-angle longitudinal wave probe and preparation method thereof |
| CN113533518B (en) * | 2021-07-14 | 2024-04-26 | 北京信泰智合科技发展有限公司 | Large-angle longitudinal wave probe and preparation method thereof |
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