CN107290427A - Probe for detecting axletree defect - Google Patents
Probe for detecting axletree defect Download PDFInfo
- Publication number
- CN107290427A CN107290427A CN201710481512.8A CN201710481512A CN107290427A CN 107290427 A CN107290427 A CN 107290427A CN 201710481512 A CN201710481512 A CN 201710481512A CN 107290427 A CN107290427 A CN 107290427A
- Authority
- CN
- China
- Prior art keywords
- probe
- eddy current
- axletree
- current sensor
- support base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/9006—Details, e.g. in the structure or functioning of sensors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/90—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
- G01N27/904—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents with two or more sensors
Abstract
The present invention discloses a kind of probe for being used to detect axletree defect, support base including eddy current sensor and the support eddy current sensor, also include adhesive part, the adhesive part is fixedly arranged on the support base, and the adhesive part, which has, makes described pop one's head in be adsorbed in the suction-combining force on the axletree surface；The probe is adsorbed in the state of the axletree surface, and the distance between the eddy current sensor and the axletree surface are located in detecting distance.Probe provided by the present invention, being arranged at the adhesive part of support base can make probe stationary be adsorbed in axletree surface, to complete the detection to axletree surface；In this way, without artificially applying the pressure for making probe fit in axletree surface, so, probe provided by the present invention can reduce the probability of Lift-off effect generation, to improve to axletree defects detection result accuracy.
Description
Technical field
It is more particularly to a kind of to be used to detect axletree defect the present invention relates to the equipment technical field for detecting axletree defect
Probe.
Background technology
At present, at home and abroad, the scientific and technological level of the association area such as EMUs, urban rail is quickly grown.
Wherein, axletree is as a part critically important in EMUs, urban rail, and after longtime running, its surface can
Some defects can occur, it is therefore desirable to which corresponding detection method to carry out complete detection to axletree surface, to find in time
There is the particular location of defect in axletree surface, so as to be overhauled in the position to it, to ensure axletree surface without any defect.
Detect for convenience, the using axles that many parts are often directly press-fited to axle body carry out defects detection, existing
Have in technology, conventional detection method is：Scanning inspection is carried out to axletree surface with the dot type probe provided with an eddy current sensor
Survey, eddy current sensor feeds back to the signal detected the eddy current detecting equipment being connected with dot type probe, feedback signal is carried out
Analysis, determines that there is zero defect on axletree surface with this.But the detection method be present, specific as follows：
When the dot type probe is detected, testing staff needs to apply pressure to dot type probe, so that the vortex in dot type probe
Sensor is able to detect that axletree surface；But dot type probe is in mobile detection process, due to making dot type probe fit in axletree
The artificial application pressure transient on surface, may result in eddy current sensor and the spacing on axletree surface in dot type probe can occur
Change, easily produces Lift-off effect；And the Lift-off effect meeting interference detection results produced, cause the reduction of testing result accuracy.
Therefore, a kind of detection probe for reducing Lift-off effect probability of happening how is provided to become for those skilled in the art
The technical issues that need to address.
The content of the invention
It is an object of the invention to provide a kind of probe for being used to detect axletree defect, the probe provided can reduce lift-off
Effect probability of happening, so as to improve testing result accuracy.
In order to solve the above technical problems, the present invention provides a kind of probe for being used to detect axletree defect, including currents sensing
The support base of device and the support eddy current sensor, in addition to adhesive part, the adhesive part are fixedly arranged on the support base, institute
Stating adhesive part has the suction-combining force for making the probe be adsorbed in the axletree surface；
The probe is adsorbed in the state of the axletree surface, between the eddy current sensor and the axletree surface
Distance is located in detecting distance.
Probe provided by the present invention, including eddy current sensor and the support base for supporting eddy current sensor；Also include setting
The adhesive part of support base is placed in, adhesive part can make probe stationary be adsorbed in axletree surface；When probe is adsorbed in axletree table
The distance between face, eddy current sensor and axletree surface are located in detecting distance, to ensure that eddy current sensor detects axletree table
Face.
Adhesive part can make probe stationary be adsorbed in axletree surface；Consequently, it is possible in detection process, testing staff is just not
The application pressure for making probe fit in axletree surface must be provided, in this way, also it is avoided that artificial application pressure instability is qualitative and causes
The occurrence of producing Lift-off effect in moving process, reduces Lift-off effect probability of happening, improves to axletree defects detection
As a result accuracy.
Optionally, the one side of the support base is inner sunken face, the quantity of the eddy current sensor be it is multiple, it is multiple described
Eddy current sensor is circumferentially distributed along the inner sunken face.
Optionally, the support base is the internal housing with chamber, and the inner sunken face is provided with and communicated with the chamber
Opening, the opening is circumferentially disposed along the inner sunken face, and multiple eddy current sensors are embedded at the opening；It is described
Probe is adsorbed in the state of the axletree surface, and distance of multiple eddy current sensors away from the axletree surface is equal.
Optionally, the adhesive part is permanent magnet, and the permanent magnet is fixedly arranged on the inner sunken face.
Optionally, the quantity of the permanent magnet is two, and two permanent magnets are arranged on the outside of the eddy current sensor,
And it is symmetrical with the eddy current sensor distribution.
Optionally, in addition to rolling member, the rolling member is arranged at the inner sunken face；The probe is adsorbed in institute
State in the state of axletree surface, the rolling member contacts the axletree surface, the rolling member can reduce the probe
Resistance when being moved along the axletree surface.
Optionally, the rolling member includes ball and spherical guide；The spherical guide is placed in the inner sunken face, institute
State ball and be placed in the spherical guide；The ball is higher than the eddy current sensor.
Optionally, the spherical guide is two, and each described spherical guide sets two balls, described in two
Ball is distributed in the two ends of the spherical guide respectively；Two spherical guides are arranged on the outside of the eddy current sensor, and
It is symmetrical with the eddy current sensor distribution.
Optionally, the support base is additionally provided with the connector interface communicated with the chamber；The eddy current sensor connects
Line is located at the chamber, and is connected by the connector interface with eddy current detecting equipment.
Optionally, the inner sunken face is connected with the bottom face of the support base by inclined plane, the inclined plane and institute
The bottom face angle for stating support base is less than 90 °.
Brief description of the drawings
Fig. 1 is a kind of structural representation of specific embodiment of probe provided by the present invention：
Fig. 2 is the upward view of probe shown in Fig. 1.
Wherein, the one-to-one relationship in Fig. 1 and Fig. 2 between component names and reference is as follows：
Probe 10, eddy current sensor 11, support base 12, inner sunken face 121, opening 122, connector interface 123, bottom face
124, inclined plane 125, permanent magnet 13, ball 14, spherical guide 15.
Embodiment
It is an object of the invention to provide a kind of probe for being used to detect axletree defect, the probe provided can reduce detection
During Lift-off effect occur probability, so as to improve testing result accuracy.
In order that those skilled in the art more fully understands technical scheme, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
Fig. 1 and Fig. 2 are refer to, Fig. 1 is a kind of structural representation of specific embodiment of probe provided by the present invention；Fig. 2 is
The upward view of probe shown in Fig. 1.
In the embodiment, the probe 10 for detecting axletree defect, including eddy current sensor 11 and support base 12, support
Seat 12 supports eddy current sensor 11；Also include adhesive part, adhesive part is fixedly installed on support base 12, and adhesive part has
The suction-combining force, in the presence of the suction-combining force, probe 10, which can be stablized, is adsorbed in detected axletree surface；Axletree is adsorbed in probe 10
In the state of surface, the distance between eddy current sensor 11 and detected axletree surface are in detecting distance, to realize that vortex is passed
Detection of the sensor 11 to axletree surface.
Here, the concrete structure of eddy current sensor 11 can still use prior art, generally include coil and circuit board, work
When, by coil electricity, producing vortex, then the induced-current obtained by Coil Detector by electromagnetic induction inside axletree,
Judge that axletree surface whether there is defect according to faradic change.
Therefore, above detecting distance refers to that the position of eddy current sensor 11 can make to produce vortex inside axletree,
Induced-current can be detected.
Adhesive part can make probe 10 is stable to be adsorbed in axletree surface, specifically, in mobile detection process, probe
10 is stable with the distance between axletree surface, and relative to stressed unstability is artificially applied, the adhesive part can be with higher
Thus, it is possible to decrease between the two because distance becomes probability ensures that the distance between eddy current sensor 11 and axletree surface are stable,
Change and occur the probability of Lift-off effect；Meanwhile, adhesive part can make probe 10 is stable to be adsorbed in axletree surface, contrast existing skill
Art, just no longer needs testing staff to provide the application pressure for making probe 10 fit in axletree surface, and testing staff only need to be to probe
10 provide migration power, the migration power applied by adhesive part and people, can complete the scanning to axletree surface
Detection.
The dot type probe 10 provided in the prior art, is provided only with an eddy current sensor 11；In detection process, per scanning
At one, it is only able to detect on axletree surface at this bit, so must be by constantly moving dot type probe 10, can be one by one
In scanning to axletree a little come complete detection；So, scanning speed is also resulted in using dot type probe 10 too low so that inspection
Survey efficiency reduction.
It is important to note that the probe 10 that the present embodiment is provided, which is particularly suitable for detection axle body, is pressed with multiple zero
The using axles of part.
To improve in detection efficiency, the embodiment, the one side of support base 12 is inner sunken face 121, currents sensing
The quantity of device 11 is multiple, and multiple eddy current sensors 11 carry out arranged distribution along the circumferential of inner sunken face 121.
It is understood that adhesive part will pop one's head in 10 when being adsorbed in axletree surface, the court of inner sunken face 121 of support base 12
To axletree surface, and the inner sunken face 121 is adsorbed in axletree surface, to ensure that eddy current sensor 11 can detect axletree table
Face.Preferably inner sunken face 121, is to ensure that support base 12 can well be coordinated with axletree surface；Meanwhile, it is interior in this
Multiple eddy current sensors 11 are set on concave curved surface 121, scanning efficiency can be improved, it is specific as follows：
Probe 10 provided with multiple eddy current sensors 11 to axletree surface when detecting, at every scanning one, it can be same
When detect axletree surface at this on multiple points, scanning frequency can be reduced, to improve detection efficiency.
Multiple eddy current sensors 11 are distributed along the circumference of inner sunken face 121, in this specific embodiment, multiple whirlpools
Circumferential direction of the flow sensor 11 along inner sunken face 121 sets one to arrange, and is arranged such, and is because being examined to using axles
During survey, influenceed by parts, mobile probe 10 can only be often carried out along axletree axial direction and is detected, and set a row to be enough
The scanning to axletree can be completed to detect；Certainly, set multiple row also can, but set multiple row, on the one hand can cause repeat detect；It is another
Aspect, the quantity of eddy current sensor 11 can cause the weight increase of probe 10 too much, be unfavorable for carrying and manipulate.It is therefore preferable that
Scheme is that circumferential direction one row of multiple eddy current sensors 11 along inner sunken face 121 are set.
In the embodiment, support base 12 is the internal housing with chamber, and inner sunken face 121 is provided with and chamber phase
Logical opening 122, multiple eddy current sensors 11 are embedded at opening 122；The opening 122 that is communicated with chamber is set, is to will be many
Individual eddy current sensor 11 is embedded at opening 122, and the wiring of multiple eddy current sensors 11 is positioned over into chamber, supports in theory
Seat 12 be not provided with chamber can also, but multiple eddy current sensors 11 and its wiring can only be exposed on the surface of inner sunken face 121,
So, during mobile probe 10, eddy current sensor 11 and its wiring may wear and tear with axletree surface, so
One, greatly reduce the service life of eddy current sensor 11.So, support base 12 can be improved from the housing with chamber
The service life of eddy current sensor 11.
The opening set in the above-mentioned embodiment of correspondence on the distribution mode of multiple eddy current sensors 11, inner sunken face 121
122 are equally configured along the circumferential direction of inner sunken face 121, consequently, it is possible to which multiple eddy current sensors 11 can be along interior concave curved
The circumferential direction in face 121 is embedded at opening 122.
In the embodiment, when probe 10 is adsorbed in axletree surface, multiple eddy current sensors 11 and detection
The distance on axletree surface is equal；Specifically, in mobile detection, each eddy current sensor 11 and detection axletree surface away from
From all identical, that is, in detecting, if equal zero defect, the letter of each eddy current sensor 11 feedback at a certain circumference in axletree surface
Number all it is equivalent, even if consequently, it is possible to axletree has position existing defects at this in circumference, then detecting the vortex of the rejected region
11 feedback signals of sensor, it will different from 11 feedback signals of other eddy current sensors at detection zero defect position, be easy to
With reference to comparing, the rejected region of axletree can be told in time.Certainly, multiple eddy current sensors 11 are with detecting axletree surface distance not
Equivalent setting is also possible.
In the embodiment, adhesive part is permanent magnet 13, and permanent magnet 13 is fixedly arranged on inner sunken face 121；Permanent magnetism
Body 13 has magnetic, and by magnet magnetic, the axletree of probe 10 and metal material can be adsorbed mutually；Specifically, permanent magnet 13 is set
It is placed on inner sunken face 121, with proximity test axletree, so that the degree mutually adsorbed between the two is maximum, so that probe 10
Can be more stable be adsorbed in axletree surface；Adhesive part selects permanent magnet 13, is because the easily acquisition, and cost of permanent magnet 13
It is relatively low；Certainly, adhesive part is not limited to that permanent magnet can only be used, as long as adhesive part can make probe 10 is stable to be adsorbed in axletree table
Face.
In present embodiment, the quantity of permanent magnet 13 is two, and two permanent magnets 13 are arranged at eddy current sensor 11
Outside, it is and symmetrical relative to eddy current sensor 11；Two permanent magnets 13 are set, and magnetic increases, and symmetrical, can
Probe 10 is set more stably to be adsorbed in axletree surface.Certainly, the quantity of permanent magnet 13 and distribution mode not limited to this, as long as energy
Make probe 10 is stable to be adsorbed in axletree surface.
In the embodiment, in addition to rolling member, rolling member is arranged at inner sunken face 121, when probe 10 is inhaled
Axletree surface is invested, rolling member contact axletree surface, rolling member can reduce the probe 10 and be moved along the axletree surface
Resistance when dynamic.In theory, it is also feasible to be not provided with rolling member；But set after rolling member, rolling member and axletree table
Face is contacted, reduce probe 10 along axletree surface move when resistance, convenient probe 10 moves；Meanwhile, it can also reduce probe 10
Directly contacted with axletree surface, to reduce the abrasion that directly contact is produced to probe 10, the service life of probe 10 can be improved.
In present embodiment, rolling member includes ball 14 and spherical guide 15, and spherical guide 15 is arranged at indent
On curved surface 121, ball 14 is embedded at spherical guide 15, and ball 14 is higher than eddy current sensor 11.
In detection process, the contact axletree of ball 14 surface, can be flexible along axletree surface because ball 14 has smooth surface
Progress roll, consequently, it is possible to which i.e. convenient probe 10 is moved, the abrasion between probe 10 and axletree surface can be reduced again；Meanwhile,
Ball 14 is higher than eddy current sensor 11, that is, keeps eddy current sensor 11 and axletree surface to have certain distance, can avoid axletree table
The slight attachment in face produces interference to eddy current sensor 11, to ensure the sensitivity of the detection of eddy current sensor 11.It is to be understood that
Rolling member can also use other forms, such as, from needle roller and roller guide can also, as long as selected rolling member energy
It is enough reduce probe 10 along axletree surface move when resistance.
In the embodiment, the quantity of spherical guide 15 is setting two on two, and each spherical guide 15
Ball 14, two balls 14 are distributed in the two ends of the spherical guide 15；Two spherical guides 15 are similarly disposed at eddy current sensor
11 outside, and it is symmetrical relative to eddy current sensor 11.Spherical guide 15 is symmetrical and two ends of each guide rail are set
Ball 14 is put, with good stability when can make the probe 10 be moved relative to axletree surface.Certainly, the quantity of spherical guide 15,
The quantity of ball 14 and their distribution mode not limited to this, as long as good stable mobile effect can be played.
In the embodiment, connector interface 123, the connection are additionally provided with the housing of the support base 12 of probe 10
Device interface 123 is communicated with the chamber in housing；The wiring of eddy current sensor 11 is positioned over chamber, and passes through connector interface 123
It is connected with eddy current detecting equipment, in order to which eddy current sensor 11 communicates with eddy current detecting equipment.
In the embodiment, held in the mouth between the bottom face 124 of inner sunken face 121 and support base 12 by inclined plane 125
Connect, and the angle between the bottom face 124 of inclined plane 125 and support base 12 is less than 90 °, so, is examined to using axles
During survey, because axletree press-fits many parts, movement of these parts to probe 10 can be avoided to impact as far as possible.
It is used to detect that the probe of axletree defect is described in detail to provided by the present invention above.It is used herein
Embodiment is set forth to the principle of the present invention, and the explanation of embodiment of above is only intended to help and understands the present invention
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from original of the invention
On the premise of reason, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into right of the present invention and wanted
In the protection domain asked.
Claims (10)
1. the probe for detecting axletree defect, it is characterised in that including eddy current sensor (11) and the support currents sensing
The support base (12) of device (11), in addition to adhesive part, the adhesive part are fixedly arranged on the support base (12), the adhesive portion
Part, which has, makes described pop one's head in be adsorbed in the suction-combining force on the axletree surface；
The probe is adsorbed in the state of the axletree surface, between the eddy current sensor (11) and the axletree surface
Distance is located in detecting distance.
2. probe as claimed in claim 1, it is characterised in that the one side of the support base (12) is inner sunken face (121), institute
The quantity for stating eddy current sensor (11) is multiple, circumference of multiple eddy current sensors (11) along the inner sunken face (121)
Distribution.
3. probe as claimed in claim 2, it is characterised in that the support base (12) is the internal housing with chamber, institute
State inner sunken face (121) and be provided with the opening (122) that is communicated with the chamber, the opening (122) is along the inner sunken face (121)
It is circumferentially disposed, multiple eddy current sensors (11) be embedded at it is described opening (122)；
The probe is adsorbed in the state of the axletree surface, and multiple eddy current sensors (11) are away from the axletree surface
Distance is equivalent.
4. the probe as described in claim any one of 1-3, it is characterised in that the adhesive part is permanent magnet (13), described
Permanent magnet (13) is fixedly arranged on the inner sunken face (121).
5. probe as claimed in claim 4, it is characterised in that the quantity of the permanent magnet (13) is two, described in two forever
Magnet (13) is arranged on the outside of the eddy current sensor (11), and is symmetrical with the eddy current sensor (11) distribution.
6. probe as claimed in claim 4, it is characterised in that also including rolling member, the rolling member is arranged at described
Inner sunken face (121)；
The probe is adsorbed in the state of the axletree surface, and the rolling member contacts the axletree surface, the rolling
Part can reduce it is described probe along the axletree surface move when resistance.
7. probe as claimed in claim 6, it is characterised in that the rolling member includes ball (14) and spherical guide
(15)；
The spherical guide (15) is placed in the inner sunken face (121), and the ball (14) is placed in the spherical guide (15)；
The ball (14) is higher than the eddy current sensor (11).
8. probe as claimed in claim 7, it is characterised in that the spherical guide (15) is two, each described ball
Guide rail (15) sets two balls (14), and two balls (14) are distributed in the two of the spherical guide (15) respectively
End；
Two spherical guides (15) are arranged on the outside of the eddy current sensor (11), and are symmetrical with the eddy current sensor
(11) it is distributed.
9. probe as claimed in claim 3, it is characterised in that the support base (12) is additionally provided with the company communicated with the chamber
Connect device interface (123)；
The wiring of the eddy current sensor (11) is located at the chamber, and passes through the connector interface (123) and EDDY CURRENT
Equipment is connected.
10. pop one's head in as claimed in claim 2 or claim 3, it is characterised in that the inner sunken face (121) and the support base (12)
Bottom face (124) pass through inclined plane (125) and be connected, the bottom face (124) of the inclined plane (125) and the support base (12)
Angle is less than 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481512.8A CN107290427A (en) | 2017-06-22 | 2017-06-22 | Probe for detecting axletree defect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481512.8A CN107290427A (en) | 2017-06-22 | 2017-06-22 | Probe for detecting axletree defect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107290427A true CN107290427A (en) | 2017-10-24 |
Family
ID=60097434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710481512.8A Pending CN107290427A (en) | 2017-06-22 | 2017-06-22 | Probe for detecting axletree defect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107290427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109085239A (en) * | 2018-07-24 | 2018-12-25 | 成都铁安科技有限责任公司 | A kind of wheel shaft comprehensive diagnos platform |
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