CN104359971A - Detector for cracks of all-wheel-rail contact surface at head of steel rail - Google Patents
Detector for cracks of all-wheel-rail contact surface at head of steel rail Download PDFInfo
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- CN104359971A CN104359971A CN201410629074.1A CN201410629074A CN104359971A CN 104359971 A CN104359971 A CN 104359971A CN 201410629074 A CN201410629074 A CN 201410629074A CN 104359971 A CN104359971 A CN 104359971A
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- rail
- detecting unit
- wheeltrack
- end portion
- crackle
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Abstract
The invention provides a detector for cracks of an all-wheel-rail contact surface at the head of a steel rail. The detector is characterized in that a plurality of detection units are fixed among a plurality of fixed plates of a detection-unit fixing frame; the two adjacent detection units are distributed in a staggered manner, then the plurality of detection units cover the all-wheel-rail contact surface at the head of the steel rail jointly so as to realize detection for the cracks of the all-wheel-rail contact surface at the head of the steel rail in a contact or non-contact manner and further avoid the condition of mutual interference and conflict between the two adjacent detection units. The detector provided by the invention has the advantages that the structure is simple, one-time detection for the shallow cracks on the all-wheel-rail contact surface at the head of the steel rail can be realized, and the accuracy of the result and the working efficiency in detection for the cracks of the steel rail are improved.
Description
Technical field
The present invention relates to detecting instrument technical field, particularly the full running surface of wheeltrack crackle detecting instrument of a kind of rail's end portion.
Background technology
In rail transportation system, rail plays a part to support train and the advance of guided vehicle wheel.Along with the train speed of railway and urban track traffic improve, hauled weight increases, and the use of the good rail of anti-wear performance, within the scope of Rail Surface Wheel/Rail Contact Area, frequently occur rolling contact fatigue crackle.This is because Rail Surface is subject to the repeated action compared with big wheel load, cause material to occur plastic yield and fatigue, and be not easy again the result that is worn.At present, this fatigue crack can be slowed down by steel rail grinding operation or control.In order to work out the polishing amount of steel rail grinding operation, need to grasp crack depth quickly and accurately.For the measurement of surface fatigue crack depth, traditional ultrasonic technology is helpless, conventional and effective method is EDDY CURRENT.But due to rail transversal section be circular arc, Wheel Rail Contact is certain distributed areas at Rail Surface, single eddy current probe or eddy current array probe cannot cover whole Wheel/Rail Contact Area, and conventional eddy current crackle appliance requires Power supply, data display need external computer, measurement data can only be kept in computer, these aspects constrain this technology at the scene Rail Surface crackle measure in application.
Summary of the invention
The object of the present invention is to provide the full running surface of wheeltrack crackle detecting instrument of a kind of rail's end portion, rail failure pick-up unit volume of the prior art is used more very much not to be easy to carry to solve, the crackle of rail shallow-layer cannot be detected, thus cause that the testing result precision of rail failure pick-up unit is not high, the problem of work efficiency drop.
For solving the problems of the technologies described above, the invention provides the full running surface of wheeltrack crackle detecting instrument of a kind of rail's end portion, described rail's end portion full running surface of wheeltrack crackle detecting instrument comprises: a detecting unit fixed mount, the mainframe box being fixed on the multiple detecting unit on described detecting unit fixed mount and being connected with described multiple detecting unit; Wherein,
Described detecting unit is detection probe or detection probe array; Described detecting unit fixed mount comprises the multiple fixed heads be fixed to one another, the shape of described fixed head all with the cross-sectional outling form fit of rail; Be fixed with a detecting unit between every two fixed heads, and adjacent two detecting units are in staggered distribution mutually.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, described detection probe is eddy current sensor probe or eddy current array probe.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, described detecting unit fixed mount also comprises leader, and described handle is fixed on described fixed head.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, described detection probe is fixed between two fixed heads by screw.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, described detecting unit fixed mount is aluminium alloy detecting unit fixed mount or titanium alloy detecting unit fixed mount.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, the inside of described mainframe box is provided with signal analysis and processing device.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, described signal analysis and processing device is computer.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, the inside of described mainframe box is provided with the power supply device be connected with described signal analysis and processing device.
Optionally, in the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, described mainframe box is provided with display screen, data memory interface, charging inlet and storage unit.
In the full running surface of wheeltrack crackle detecting instrument of rail's end portion provided by the present invention, by between multiple fixed heads of multiple detecting unit being fixed on detecting unit fixed mount, adjacent two detecting units are in staggered distribution mutually, multiple detecting unit is made jointly to cover the full running surface of wheeltrack of rail's end portion, the detection to the full running surface of wheeltrack crackle of rail's end portion is realized with contact or non-contacting mode, thus avoid the situation occurring interference and conflict mutually between adjacent two detecting units, structure is simple, the disposable detection to shallow-layer crackle on the full running surface of wheeltrack of rail's end portion can be realized, improve the precision to Rail crack detection result and work efficiency.
Accompanying drawing explanation
Fig. 1 is front view when rail's end portion full running surface of wheeltrack crackle detecting instrument detects rail's end portion full running surface of wheeltrack crackle in one embodiment of the invention;
Fig. 2 is right view when rail's end portion full running surface of wheeltrack crackle detecting instrument detects rail's end portion full running surface of wheeltrack crackle in one embodiment of the invention;
Fig. 3 is the vertical view of the detecting unit fixed mount being fixed with detecting unit in one embodiment of the invention;
Fig. 4 is the vertical view of the detecting unit fixed mount being fixed with detecting unit in another embodiment of the present invention.
In Fig. 1-Fig. 4,
Detection probe-1; Detecting unit fixed mount-2; Fixed head-21; Handle-22; Mainframe box-3; Display screen-31; Data memory interface-32; Charging inlet-33; Storage unit-34.
Embodiment
Below in conjunction with the drawings and specific embodiments, the full running surface of wheeltrack crackle detecting instrument of rail's end portion that the present invention proposes is described in further detail.According to the following describes and claims, advantages and features of the invention will be clearer.It should be noted that, accompanying drawing all adopts the form that simplifies very much and all uses non-ratio accurately, only in order to object that is convenient, the aid illustration embodiment of the present invention lucidly.
Please refer to Fig. 1-Fig. 3, wherein, Fig. 1 is front view when rail's end portion full running surface of wheeltrack crackle detecting instrument detects rail's end portion full running surface of wheeltrack crackle in one embodiment of the invention; Fig. 2 is right view when rail's end portion full running surface of wheeltrack crackle detecting instrument detects rail's end portion full running surface of wheeltrack crackle in one embodiment of the invention; Fig. 3 is the vertical view of the detecting unit fixed mount being fixed with detecting unit in one embodiment of the invention.As shown in Figure 1, the full running surface of wheeltrack crackle detecting instrument of described rail's end portion, comprising: a detecting unit fixed mount 2, the mainframe box 3 being fixed on the multiple detecting units 1 on described detecting unit fixed mount 2 and being connected with described multiple detecting unit 1; Wherein,
Described detecting unit 1 is detection probe or detection probe array; Described detecting unit fixed mount 1 comprises the multiple fixed heads 21 be fixed to one another, the shape of described fixed head 21 all with the cross-sectional outling form fit of rail; Be fixed with a detecting unit 1 between every two fixed heads 21, and adjacent two detecting units 1 are in staggered distribution mutually.
In order to understand the present invention preferably, please refer to Fig. 3 and Fig. 4, can be clearly seen that in figure, the situation that so-called adjacent two detecting units 1 are in staggered distribution mutually, profile design due to fixed head 21 is the cross-sectional outling mating shapes with rail, when detecting unit 1 is fixed along fixed head 21, the measured zone that multiple detecting unit is formed jointly meets the surface requirements measuring rail, now each region on the surface of rail has one or more detecting unit 1 to measure, and guarantees that the scope measured can cover the surface of rail.In addition, because adjacent two detecting units 1 are in staggered distribution mutually, the situation occurring interference and conflict mutually between adjacent two detecting units 1 is avoided, the precision of the Rail crack detection of raising.Certain the present invention is not limited to the both of these case shown in Fig. 3 and Fig. 4 for the situation that two detecting units are in staggered distribution mutually, as long as guarantee that adjacent two detecting units stagger mutually and the measured zone that the distribution of multiple detecting unit entirety is formed meets the demand on the surface measuring rail.
In the present embodiment, described detecting unit 1 is detection probe or detection probe array; Preferably, described detection probe is eddy current sensor probe or described detection probe array is eddy current array probe.To be popped one's head in by eddy current sensor or eddy current array probe can realize contacting or contactless continuous coverage the damage of Rail Surface, the shallow-layer crackle (crack depth is less than or equal to the crackle of 5mm) on the full running surface of wheeltrack of rail's end portion can be detected, avoid in prior art when using ultrasound wave to detect rail cracks and there is check frequency, namely cannot detect the crackle on whole rail's end portion full-sized surface of contact, and the situation of the shallow-layer crackle on rail's end portion full-sized surface of contact cannot be detected.In addition due to eddy current sensor probe or the eddy current array probe features such as to have volume little, highly sensitive, frequency response is wide, and then improve the performance of the full running surface of wheeltrack crackle detecting instrument of rail's end portion.
Please continue to refer to Fig. 1, described detecting unit fixed mount 2 also comprises leader 22, and described handle 22 is fixed on described fixed head 21.Consider for hommization, fixed handle 22 on fixed head 21, when applying, only need technician's hand-held handle 22 part, detecting unit fixed mount 2 is made to be parallel to Rail Surface, and vertically move along rail, the measurement of the Rail Surface crackle of (in the scope that namely the full running surface of wheeltrack crackle detecting instrument of rail's end portion had moved) in certain limit can be carried out.Whole simple to operate, reduce the loss to manpower and materials.
Further, described detecting unit 1 is fixed between two fixed heads 21 by screw, can form a fixed test cell array structure that can encapsulate or do not encapsulate by detecting unit 1 and detecting unit fixed mount 2.When detecting unit 1 breaks down, the detecting unit 1 can having changed bad by knockout screw, makes the detecting unit 1 on rail's end portion full running surface of wheeltrack crackle detecting instrument all have good serviceability, the needs of realistic application.In addition, when not using the full running surface of wheeltrack crackle detecting instrument of rail's end portion, detecting unit 1 can also be thought to disassemble from detecting unit fixed mount 2 and to be safeguarded preservation, to guarantee the performance of detecting unit 1.
Preferably, described detecting unit fixed mount 2 is aluminium alloy detecting unit fixed mount 2 or titanium alloy detecting unit fixed mount 2.Adopted by detecting unit fixed mount 2 aluminium alloy or titanium alloy to make, make detecting unit fixed mount 2 light, be easy to carry about with one, comparatively hommization.
Please continue to refer to Fig. 1, described mainframe box 3 is provided with display screen 31, data memory interface 32, charging inlet 33 and storage unit 34.The power supply device that the inside of described mainframe box 3 is provided with signal analysis and processing device and is connected with described signal analysis and processing device.The device of signal analysis and processing described in the present embodiment is preferably computer, certainly can also be panel computer, desktop computer or industrial computer etc. other can realize the device of signal analysis and processing.By signal analysis and processing device, the related data of the rail cross-sectional outling detected by multiple detecting unit 1 carries out analyzing and processing, and is shown on display screen 31, thus formed intuitively data or image so that person skilled is analyzed.In addition, if technician needs the operations such as the data copy after to the process of signal analysis and processing device analysis and printing, can also to be connected on movable storage device on (USB flash disk or portable hard drive etc.) or printer by the data memory interface 32 that mainframe box 3 is arranged.Wherein, described power supply device provides energy for signal analysis and processing device and multiple detecting unit 1, with the normal work of both maintenances, because power supply device (can be accumulator) is arranged at described mainframe box 3 inside, be not easy to dismounting, therefore charging inlet 33 is set on mainframe box 3, so that external power supply carries out the operations such as charging to power supply device, maintain the work requirements of the full running surface of wheeltrack crackle detecting instrument of rail's end portion.For considering easily, described mainframe box 3 is provided with storage unit 34, for depositing the cable that connects between mainframe box 3 and multiple detecting unit 1 and need not the full running surface of wheeltrack crackle detecting instrument of rail's end portion of the present invention being, dismantle detecting unit fixed mount 2 after inspection unit 1.After completing Rail crack detection, the multi-cable line under dismounting and the detecting unit fixed mount 2 after dismantling inspection unit 1 can be deposited in storage unit 34, thus save space shared by cable, mainframe box 3 is easy to carry.
The application principle of the full running surface of wheeltrack crackle detecting instrument of rail's end portion of the present invention:
Before detection, by charging inlet 33, the power supply device of mainframe box 3 inside is full of electricity, the storage unit 34 of cable from mainframe box 3 is taken out, complete the connection of multiple detecting unit 1 and mainframe box 3, and detecting unit 1 is fixed on detecting unit fixed mount 2; During detection, need to start mainframe box 3, technician needs hand-held handle 22 part, probe fixing bracket is vertically moved the detection that can complete the crackle within the scope of Rail Surface certain length along rail, meanwhile the data of inspection are transferred to signal analysis and processing device in mainframe box 3 and carry out the operations such as analyzing and processing by detecting unit 1, thus know Rail Surface cracks.Whole testing process is simple to operate, and detection speed is fast, realistic detection demand.
To sum up, in the full running surface of wheeltrack crackle detecting instrument of rail's end portion provided by the present invention, by between multiple fixed heads of multiple detecting unit being fixed on detecting unit fixed mount, adjacent two detecting units are in staggered distribution mutually, multiple detecting unit is made jointly to cover the full running surface of wheeltrack of rail's end portion, the detection to the full running surface of wheeltrack crackle of rail's end portion is realized with contact or non-contacting mode, thus avoid the situation occurring interference and conflict mutually between adjacent two detecting units, structure is simple, the disposable detection to shallow-layer crackle on the full running surface of wheeltrack of rail's end portion can be realized, improve the precision to Rail crack detection result and work efficiency.
Foregoing description is only the description to present pre-ferred embodiments, any restriction not to the scope of the invention, and any change that the those of ordinary skill in field of the present invention does according to above-mentioned disclosure, modification, all belong to the protection domain of claims.
Claims (9)
1. the full running surface of wheeltrack crackle detecting instrument of rail's end portion, is characterized in that, comprising: a detecting unit fixed mount, the mainframe box being fixed on the multiple detecting unit on described detecting unit fixed mount and being connected with described multiple detecting unit; Wherein,
Described detecting unit is detection probe or detection probe array; Described detecting unit fixed mount comprises the multiple fixed heads be fixed to one another, the shape of described fixed head all with the cross-sectional outling form fit of rail; Be fixed with a detecting unit between every two fixed heads, and adjacent two detecting units are in staggered distribution mutually.
2. the full running surface of wheeltrack crackle detecting instrument of rail's end portion as claimed in claim 1, is characterized in that, described detection probe is eddy current sensor probe or eddy current array probe.
3. the full running surface of wheeltrack crackle detecting instrument of rail's end portion as claimed in claim 1, it is characterized in that, described detecting unit fixed mount also comprises leader, and described handle is fixed on described fixed head.
4. the full running surface of wheeltrack crackle detecting instrument of rail's end portion as claimed in claim 1, it is characterized in that, described detection probe is fixed between two fixed heads by screw.
5. the full running surface of wheeltrack crackle detecting instrument of rail's end portion as claimed in claim 1, it is characterized in that, described detecting unit fixed mount is aluminium alloy detecting unit fixed mount or titanium alloy detecting unit fixed mount.
6. the full running surface of wheeltrack crackle detecting instrument of rail's end portion as claimed in claim 1, it is characterized in that, the inside of described mainframe box is provided with signal analysis and processing device.
7. the full running surface of wheeltrack crackle detecting instrument of rail's end portion as claimed in claim 6, it is characterized in that, described signal analysis and processing device is computer.
8. the full running surface of wheeltrack crackle detecting instrument of rail's end portion as claimed in claim 6, it is characterized in that, the inside of described mainframe box is provided with the power supply device be connected with described signal analysis and processing device.
9. the full running surface of wheeltrack crackle detecting instrument of the rail's end portion according to any one of claim 1-8, is characterized in that, described mainframe box is provided with display screen, data memory interface, charging inlet and storage unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410629074.1A CN104359971A (en) | 2014-11-10 | 2014-11-10 | Detector for cracks of all-wheel-rail contact surface at head of steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410629074.1A CN104359971A (en) | 2014-11-10 | 2014-11-10 | Detector for cracks of all-wheel-rail contact surface at head of steel rail |
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| CN104359971A true CN104359971A (en) | 2015-02-18 |
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| CN201410629074.1A Pending CN104359971A (en) | 2014-11-10 | 2014-11-10 | Detector for cracks of all-wheel-rail contact surface at head of steel rail |
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| CN111521671A (en) * | 2020-05-19 | 2020-08-11 | 华中科技大学 | Eddy current flaw detection method and device for surface cracks of steel rail |
| CN113665622A (en) * | 2020-10-12 | 2021-11-19 | 爱德森（厦门）电子有限公司 | In-service track shape dynamic detection device and method thereof |
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| CN113665622A (en) * | 2020-10-12 | 2021-11-19 | 爱德森（厦门）电子有限公司 | In-service track shape dynamic detection device and method thereof |
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