CN2919190Y - Electromagnetic ultrasonic transducer for performing online dynamic vice detecting of rolling stock wheels - Google Patents
Electromagnetic ultrasonic transducer for performing online dynamic vice detecting of rolling stock wheels Download PDFInfo
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- CN2919190Y CN2919190Y CN 200620034701 CN200620034701U CN2919190Y CN 2919190 Y CN2919190 Y CN 2919190Y CN 200620034701 CN200620034701 CN 200620034701 CN 200620034701 U CN200620034701 U CN 200620034701U CN 2919190 Y CN2919190 Y CN 2919190Y
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model discloses an electromagnetic acoustic transducer applied to on-line dynamic detection towards the flaws of locomotive vehicle wheels. A frame (4) thereof whose E-shaped groove gap is downwards is formed by medium integral casting or milling; a high frequency coil (3) is around the E-shaped groove of the frame (4); an upper surface (12) of the frame (4) is an arc concave adaptable to a wheel (1); a stent (9) is positioned under a bottom plate (13) and connected with the bottom plate (13) by a damping spring (5). The high frequency coil of the electromagnetic acoustic transducer has a long service life and is not easy to be damaged; meantime, the utility model has a high electromagnetic coupling efficiency between the high frequency coil and the detected wheel, high detection accuracy and a strong performance.
Description
Affiliated technical field
The utility model relates to the electromagnet ultrasonic changer that a kind of Non-Destructive Testing field is used, and relates in particular to a kind of electromagnet ultrasonic changer that rolling stock wheel uses the online detection of dynamic of thread defect that is used for.
Background technology
Wheel is to being the critical component of locomotive running gear system, and whether wheel exists defective and damage to be directly connected to traffic safety to profile.The great development of railway speed increase and the operation of the high density of rolling stock have accelerated to take turns the right rate of wear.Therefore,, guarantee the safety of train driving, need in time the wheel tread defective to be carried out dynamic nondestructive and detect for avoiding occurring taking turns to defective occurring also in the situation that continues to use.Common wheel adopts piezoelectric ultrasonic transducer to detect to detection mode, piezoelectric ultrasonic transducer produce bulk wave to wheel when detecting, need to carry out radially detecting in the body along the point by point scanning of tread periphery, can't realize that the automatic flyback of taking turns surface and nearly surface detects, thereby can't realize operating the wheel carrying out detection of dynamic.
The structure of the electromagnet ultrasonic changer in Non-Destructive Testing field with principle of work is: utilize magnet to produce one and become level or vertical static state or quasistatic low frequency magnetic field with workpiece for measurement is surperficial, be placed with radio-frequency coil in magnetic field.This radio-frequency coil is by skeletal fixation, and is parallel with the workpiece for measurement surface.The high-frequency signal of external high frequency signal generator flows into radio-frequency coil, produces high frequency magnetic field, produces current vortex at surface of the work and nearly surface induction, and the frequency range of high frequency magnetic field is in the ultrasonic frequency scope.According to Lorentz force principle or magnetostrictive effect, current vortex forms ultrasonic surface wave under the effect in magnetic field, and this surface wave will be propagated along surface of the work and nearly surface, and radio-frequency coil is responded to the ultrasonic surface wave signal that receives reflected back simultaneously.Transducer is to export behind the electric signal with this ultrasonic surface wave conversion of signals, by analyzing and processing equipment it is carried out analyzing and processing, can realize the Non-Destructive Testing to surface of the work and nearly surface state.As seen electromagnet ultrasonic changer can produce automatically the surface wave that detours and propagate along wheel tread and nearly surface thereof, can realize the right detection of dynamic of taking turns in service easily.
But in the wheel tread defective detection of dynamic process of electromagnet ultrasonic changer, the surface distance that requires radio-frequency coil and wheel tread is less than the good coupling of 1mm with the realization electromagnetic signal.And because there is spot corrosion in wheel tread, phenomenon such as peels off continuously, perhaps have other foreign matters to exist, this type of physical boundary conditions limited the electromagnetic acoustic technology at wheel to the application in detecting.And the coil-winding of electromagnet ultrasonic changer also can be in the right contact of wheel, coupling process, because of factors such as machinery, chemistry or heat cause damage.
Existing rolling stock wheel is to electromagnet ultrasonic changer of on-line dynamic detection for defect, and the processing mode that overcomes the above problems is: add filler between coil and surface of the work, radio-frequency coil is protected.But, in long-term use, be subjected to wheel to roll effect, filler easily comes off, and damages radio-frequency coil.Simultaneously, electromagnet ultrasonic changer line coil top is the plane, is that line contacts with the wheel tread of circular arc, the contact weak effect, and coupling efficiency is low, and accuracy of detection is low, poor reliability.
Summary of the invention
The purpose of this utility model just provides a kind of rolling stock wheel to electromagnet ultrasonic changer of on-line dynamic detection for defect, and the long service life of the radio-frequency coil of this electromagnet ultrasonic changer is not fragile; Simultaneously, the electromagnetic coupled efficient height of radio-frequency coil and tested wheel, accuracy of detection height, good reliability.
The utility model solves its technical matters, and the technical scheme that is adopted is: a kind of rolling stock wheel comprises the magnet casing between panel, base plate and panel and the base plate to electromagnet ultrasonic changer of on-line dynamic detection for defect, and magnet casing internal fixation has magnet; Skeleton is located in the rectangular channel of panel, and radio-frequency coil is on skeleton, and its design feature is: integrated poured or Milling Process forms skeleton by medium, and the breach of its E shape groove is downward, and radio-frequency coil is on the E shape groove of skeleton; The upper surface of skeleton is the arc-shaped concave adaptive with wheel tread shape; Floor below is provided with support, and base plate links to each other by damping spring with support.
Compared with prior art, the beneficial effect of the technical solution of the utility model is: adopt monoblock type, the downward skeleton of E shape groove breach, making skeleton be rolled part is monolithic construction with whole skeleton, the part that rolls than existing adding filling material, its ability of bearing pressure obviously strengthens, be difficult for pulverizing radio-frequency coil difficult drop-off, long service life.The upper surface of skeleton is the arc-shaped concave adaptive with wheel tread shape, makes to contact between ultrasonic transducer and the wheel tread by the line contact to change the face contact into, and contact area increases greatly, improves electromagnetic coupled efficient, accuracy of detection height, good reliability.Damping spring between base plate and the support can weaken wheel tread dynamically rolling the impulsive force that in the process electromagnetic acoustic transducing is produced, and effectively protects electromagnet ultrasonic changer, increases the service life; Also make simultaneously to contact closelyr, good between wheel tread and the ultrasonic transducer, further improve electromagnetic coupled efficient.
The bottom of above-mentioned E shape groove and the distance≤1mm of arc-shaped concave.Can guarantee that like this electromagnetic coupled between ultrasonic transducer coil and wheel tread is good.
Above-mentioned support is fixed on the deck, and deck then fastens on the bottom of rail by bolt card.Adopt the mode of deck to realize installing and fixing between the utility model and the track, to the destruction minimum of the existing structure of track.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the main TV structure synoptic diagram of the utility model embodiment.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the vertical view of Fig. 1.
Fig. 4 is panel and the skeleton of inside and the broken section enlarged drawing (the B broken section enlarged drawing of Fig. 1) of coil of present embodiment.
Fig. 5 is the cutaway view Amplified image (A of Fig. 3 is to cutaway view Amplified image) of the panel of present embodiment.
Fig. 6 is the circuit theory synoptic diagram of pre-amplification circuit of preposition amplification case 10 inside of present embodiment.
Embodiment
Embodiment
Fig. 1-5 illustrates, a kind of embodiment of the present utility model is: a kind of rolling stock wheel is to electromagnet ultrasonic changer of on-line dynamic detection for defect, comprise the magnet casing 8 between panel 2, base plate 13 and panel 2 and the base plate 13, magnet casing 8 internal fixation have magnet 11; Skeleton 4 is located in the rectangular channel of panel 2, and radio-frequency coil 3 is on skeleton 4, and integrated poured or Milling Process forms skeleton 4 by medium, and the breach of its E shape groove is downward, and radio-frequency coil 3 is on the E shape groove of skeleton 4; The upper surface 12 of skeleton 4 is and the adaptive arc-shaped concave of wheel 1 tread contour; Base plate 13 belows are provided with support 9, and base plate 13 links to each other by damping spring 5 with support 9.
The bottom of E shape groove and the distance≤1mm of arc-shaped concave 12.Support 9 is fixed on the deck 6, and 6 of decks are fixed on the bottom of rail by bolt 14 chuckings.Certainly, when reality is used, also can adopt perforate on the web of the rail of track 7, with the bolt mode with the support installing type on track 7, and without deck.
Also be fixed with the preposition amplification case 10 that links to each other with radio-frequency coil 3 on the support 9 of present embodiment.Certainly this preposition amplification case 10 and inner pre-amplification circuit thereof also can place other position, as the top of deck 6.The input end of the pre-amplification circuit of these preposition amplification case 10 inside links to each other with the exit of radio-frequency coil 3, and this circuit can adopt the pre-amplification circuit of various existing supersonic band electric signal, pre-amplification circuit as shown in Figure 6.
The radius of curvature R of the arc-shaped concave 12 of the utility model skeleton 4 is suitable to the radius-of-curvature of 1 tread rolling circle with wheel, and span is usually at 400mm-700mm.The material of panel 2 can be selected steel for use, also can select other wear-resistant metal materials for use.The used magnet 11 of electromagnet ultrasonic changer both can use DC electromagnet also can adopt permanent magnet.
The utility model improves by the contour structures to erection support 9 and electromagnet ultrasonic changer, can also be applied in the wheel detection system.Remove erection support 9 and damping spring system 5, add handle, then can be applied to wheel in the static defect detecting system.
The utility model is when implementing, and except that the upper surface of skeleton 4 is the arc-shaped concave 12, the part upper surface of the panel 2 adjacent with skeleton 4 also constitutes and the identical arc-shaped concave 12 of skeleton 4 radius-of-curvature and the center of circle.Certainly, also only skeleton 4 upper surfaces are arc-shaped concaves 12, and the upper surface of panel 2 then is not higher than the highest point of arc-shaped concave 12.
Claims (3)
1, a kind of rolling stock wheel comprises the magnet casing (8) between panel (2), base plate (13) and panel (2) and the base plate (13) to electromagnet ultrasonic changer of on-line dynamic detection for defect, and magnet casing (8) internal fixation has magnet (11); Skeleton (4) is located in the rectangular channel of panel (2), radio-frequency coil (3) is on skeleton (4), it is characterized in that: integrated poured or Milling Process forms described skeleton (4) by medium, and the breach of its E shape groove is downward, and radio-frequency coil (3) is on the E shape groove of skeleton (4); The upper surface (12) of skeleton (4) is and the adaptive arc-shaped concave of wheel (1) tread contour; Base plate (13) below is provided with support (9), and base plate (13) links to each other by damping spring (5) with support (9).
2, electromagnet ultrasonic changer according to claim 1 is characterized in that: the distance≤1mm of the bottom of described E shape groove and arc-shaped concave (12).
3, electromagnet ultrasonic changer according to claim 1 is characterized in that: described support (9) is fixed on the deck (6), and deck (6) then is fixed on the bottom of rail by bolt (14) chucking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034701 CN2919190Y (en) | 2006-06-23 | 2006-06-23 | Electromagnetic ultrasonic transducer for performing online dynamic vice detecting of rolling stock wheels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620034701 CN2919190Y (en) | 2006-06-23 | 2006-06-23 | Electromagnetic ultrasonic transducer for performing online dynamic vice detecting of rolling stock wheels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2919190Y true CN2919190Y (en) | 2007-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620034701 Expired - Lifetime CN2919190Y (en) | 2006-06-23 | 2006-06-23 | Electromagnetic ultrasonic transducer for performing online dynamic vice detecting of rolling stock wheels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2919190Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381782C (en) * | 2006-06-23 | 2008-04-16 | 西南交通大学 | Electromagnet ultrasonic changer of on-line dynamic detection for defect of rolling stock wheel set |
| CN104583749A (en) * | 2012-07-04 | 2015-04-29 | 黑根沙伊特-Mfd有限公司及两合公司 | Method and device for inspecting railway wheels |
| CN108195701A (en) * | 2017-12-26 | 2018-06-22 | 重庆程顺汽车配件制造有限公司 | Tire wear test device and its manufacturing method |
-
2006
- 2006-06-23 CN CN 200620034701 patent/CN2919190Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100381782C (en) * | 2006-06-23 | 2008-04-16 | 西南交通大学 | Electromagnet ultrasonic changer of on-line dynamic detection for defect of rolling stock wheel set |
| CN104583749A (en) * | 2012-07-04 | 2015-04-29 | 黑根沙伊特-Mfd有限公司及两合公司 | Method and device for inspecting railway wheels |
| CN108195701A (en) * | 2017-12-26 | 2018-06-22 | 重庆程顺汽车配件制造有限公司 | Tire wear test device and its manufacturing method |
| CN108195701B (en) * | 2017-12-26 | 2020-04-24 | 重庆程顺汽车配件制造有限公司 | Tire wear testing device and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20080416 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |