CN210572108U - Hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw - Google Patents
Hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw Download PDFInfo
- Publication number
- CN210572108U CN210572108U CN201920964862.4U CN201920964862U CN210572108U CN 210572108 U CN210572108 U CN 210572108U CN 201920964862 U CN201920964862 U CN 201920964862U CN 210572108 U CN210572108 U CN 210572108U
- Authority
- CN
- China
- Prior art keywords
- rail
- sensor array
- hand
- bar magnet
- device based
- 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.)
- Active
Links
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The utility model provides a hand propelled rail nondestructive test device based on magnetic leakage flaw detection, the utility model discloses in the bar magnet that longitudinal section is U type suspend in the top outside of rail under the support of wheel and connecting axle, and have arranged sensor array circuit board respectively in the top of rail and left and right both sides, can realize carrying out the magnetic leakage detection to the defect of rail top and left and right both sides simultaneously, and the device simple structure, low in manufacturing cost, have the significance to the safe operation of guaranteeing the rail and the operation efficiency that improves the train, the utility model discloses can realize the comprehensive detection to the top surface of rail and side defect, on the one hand, bar magnet and rail top surface and two sides form the axial magnetization return circuit to the defect of usable magnetic leakage detection technique detection rail; on the other hand, three sensor array circuit boards arranged in the U-shaped groove of the bar magnet can respectively obtain leakage magnetic field signals in three directions of XYZ, and transverse full-coverage detection of the surface of the steel rail can be achieved.
Description
Technical Field
The utility model belongs to the technical field of rail nondestructive test device, concretely relates to hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw.
Background
The rail serves as a "foundation" for the travel of the railway train and an extremely complex force is applied between the rail and the train wheels, and when the train travel speed increases, the impact force on the rail increases. Meanwhile, along with the increase of train running density and the development of heavy load, long-term interaction between the steel rail and the train wheel becomes more frequent. Rolling contact fatigue damage is the main cause of current rail damage, rolling contact fatigue is due to relative movement and contact of the rail and the wheel set, the rail generates plastic deformation with ratchet effect on the surface of the material under the action of complex acting forces such as wheel set bending stress, contact stress and temperature stress generated due to temperature change, and when the accumulated deformation exceeds the toughness limit of the rail, cracks begin to generate on the surface. The cracks gradually form various expression forms such as rail head cracks, stripping, block falling, nuclear injuries and the like in the process of expansion, so that the cost of railway maintenance and operation is increased, and the running safety of trains is greatly threatened.
At present, the ultrasonic detection technology and the eddy current detection technology are relatively mature in industrial application, the ultrasonic detection technology is used for polling by adopting a method of contacting a wheel type probe with a steel rail, the detection result is greatly influenced by the surface shape and the cleanliness of the steel rail, the ultrasonic detection technology can only detect the internal defects of the steel rail, and the detection effect on the top surface crack defect which accounts for a large proportion in the defects of the steel rail is poor or even cannot be detected. Particularly, the longitudinal peeling defect close to the track pitch angle can block the propagation of ultrasonic waves, dangerous cracks buried in the deep can not be detected, the contact detection has large abrasion to the probe, the probe needs to be stopped and replaced in the inspection process, and the improvement of the detection speed is also limited. Although the eddy current detection technology has high sensitivity for detecting surface defects, its signal is easily interfered by the unevenness of the surface of the steel rail or the unevenness of the material, and the eddy current detection technology cannot obtain accurate effect and is not suitable for high-speed detection of the steel rail.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a hand propelled rail nondestructive test device based on magnetic leakage flaw detection that can real-time detection rail top surface and the defect of both sides face.
In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a hand propelled rail nondestructive test device based on magnetic leakage flaw detection, is the bar magnet of U type including being rectangular form and longitudinal section, this bar magnet handstand sets up, and bar magnet's both sides outer wall all is connected with the wheel rotation through the connecting axle, and bar magnet suspends in the top outside of rail under the support of wheel and connecting axle, and the interval is provided with three routes sensor array circuit board, three routes on bar magnet's the inner wall sensor array circuit board is located the top and left and right both sides of rail respectively, sensor array circuit board is including being used for the data acquisition joint mouth that links to each other with the computer and being used for carrying out nondestructive test's multiseriate sensor array to the rail, and multiseriate sensor array links to each other with the input of data.
Furthermore, the top of the bar magnet is connected with a hand push rod.
Furthermore, the multiple rows of sensor arrays are arranged at intervals along the length direction of the bar-shaped magnet.
Furthermore, the sensor array be provided with three groups, each group sensor array comprises a plurality of linear hall sensors that arrange in proper order along the width direction of bar magnet, parallel arrangement and the orientation of the response face of a plurality of linear hall sensors between a plurality of linear hall sensors are the same, the response face of the linear hall sensor in three groups sensor array is perpendicular to three coordinate axes of space coordinate system respectively.
Further, the length of each sensor array is 70 mm.
Further, each group of the sensor arrays consists of 16 linear hall sensors which are sequentially arranged along the width direction of the bar-shaped magnet.
Further, the wheels are rubber wheels.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses the bar magnet that well longitudinal section is the U type suspends in the top outside of rail under the support of wheel and connecting axle to sensor array circuit board has been arranged respectively in the top and left and right both sides of rail, can realize carrying out the magnetic leakage simultaneously and detect the defect of rail top and left and right both sides, and the device simple structure, low in manufacturing cost have the significance to the safe operation of guaranteeing the rail and the operation efficiency that improves the train, the beneficial effects of the utility model are specifically as follows:
1. the utility model can realize the comprehensive detection of the defects of the top surface and the side surface of the steel rail, and on one hand, the bar magnets, the top surface of the steel rail and the two side surfaces form an axial magnetization loop, thereby detecting the defects of the steel rail by utilizing the magnetic leakage detection technology; on the other hand, three sensor array circuit boards arranged in the U-shaped groove of the bar magnet can respectively obtain leakage magnetic field signals in three directions of XYZ, and transverse full-coverage detection of the surface of the steel rail can be realized;
2. the utility model adopts the linear Hall sensor, the low frequency response characteristic is good, the unit space resolution is higher, the volume is small, the measuring range is larger than that of a giant magneto resistance sensor, the linearity is good, and the sensor is more suitable for the design of the array sensor of the utility model;
3. the utility model discloses utilize handspike and wheel can follow the high-speed operation of rail, because the magnetic leakage detects the influence that does not receive detection speed, consequently, the utility model discloses can realize the high-speed online nondestructive test of rail.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of any one of the sensor array circuit boards;
FIG. 3 is a schematic diagram of the directions of the three-way sensor array circuit board when detecting the leakage magnetic field;
the labels in the figure are: 1. a bar magnet; 2. a steel rail; 3. a sensor array circuit board; 4. a wheel; 5. a connecting shaft; 6. a handspike; 7. a first column of sensor arrays; 8. a second column of sensor arrays; 9. a third column of sensor arrays; 10. and a data acquisition card interface.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will combine the drawings in the present invention to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, rather than all embodiments, based on the embodiments in the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, a hand-push type rail nondestructive testing device based on magnetic flux leakage flaw detection comprises a bar magnet 1 which is long and has a U-shaped longitudinal section, wherein the inner wall and the outer wall of the bar magnet 1 are respectively N/S two poles (S/N is also applicable) of a magnetic field, which is formed by arranging three bar magnets in parallel, and respectively form an axial magnetization loop with the top surface and two side surfaces of a rail, so that the defect of the rail can be detected by using a magnetic flux leakage detection technology; this bar magnet 1 sets up in an inverted manner, and the both sides outer wall of bar magnet 1 all rotates through connecting axle 5 and wheel 4 to be connected, and the junction adopts the bearing to rotate to be connected, and bar magnet 1 suspends in the top outside of rail 2 under the support of wheel 4 and connecting axle 5, and the interval is provided with three routes sensor array circuit board 3 on bar magnet 1's the inner wall, and the distance on sensor array circuit board 3 and rail surface is not more than 2.0mm, generally between 0.5 ~ 1.0mm, three routes sensor array circuit board 3 is located the top and left and right both sides of rail 2 respectively, as shown in fig. 2, sensor array circuit board 3 is including being used for the data acquisition card interface 10 that links to each other with the computer and being used for carrying out the multiseriate sensor array of nondestructive test to rail 2, and multiseriate sensor array links to each.
Further optimize this scheme, bar magnet 1's top links to each other with handspike 6, the utility model discloses utilize handspike and wheel can follow the high-speed operation of rail, because the magnetic leakage detects the influence that does not receive detection speed, consequently, the utility model discloses can realize the high-speed online nondestructive test of rail.
Further optimize this scheme, multiseriate sensor array set up along bar magnet 1's length direction interval.
Further optimizing the scheme, the sensor array is provided with three groups, each group of sensor array consists of a plurality of linear Hall sensors which are sequentially arranged along the width direction of the bar magnet 1, the linear Hall sensors are arranged in parallel, the directions of the sensing surfaces of the linear Hall sensors are the same, the sensing surfaces of the linear Hall sensors in the three groups of sensor arrays are respectively vertical to three coordinate axes of a space coordinate system, as shown in figure 3, a first row of sensor array 7 comprises 16 linear Hall sensors which are sequentially arranged, the sensing surface of each linear Hall sensor is right opposite to the surface of a steel rail, namely, the linear Hall sensors are used for detecting the magnetic leakage of the steel rail 2 along the BZ direction, a second row of sensor array 8 comprises 16 linear Hall sensors which are sequentially arranged, the sensing surface of each linear Hall sensor is vertical to the radial direction of the steel rail, namely, the linear Hall sensors are used for detecting the magnetic leakage of the steel rail 2, the third row of sensor array 8 comprises 16 linear hall sensors arranged in sequence, and the sensing surface of each linear hall sensor is perpendicular to the transverse direction of the steel rail, namely, is used for detecting the magnetic flux leakage of the steel rail 2 along the BY direction.
According to the scheme, the length of each group of sensor arrays is 70mm, the length is consistent with the transverse width of the surface of the active steel rail in China, and transverse coverage detection of the surface of the steel rail is achieved.
Further optimizing the scheme, each group of the sensor array consists of 16 linear hall sensors which are sequentially arranged along the width direction of the bar-shaped magnet 1.
Further optimizing this scheme, wheel 4 is the rubber tyer.
In the application, all hall sensors are UGN3503 in type, the low-frequency response characteristic is good, the unit space resolution is high, the size is small, the measurement range is large relative to a giant magneto-resistance sensor, the linearity is good, and the array sensor is more suitable for the design of the array sensor of the utility model; when there is defect on the top surface or both sides of the rail, the magnetic force line that distributes axially along the rail will leak out the rail surface because of receiving the separation, but usable magnetic sensor picks up the electromagnetic field change signal, realize the detection to the rail defect, and hall sensor adopts 5V DC power supply to supply power, and 48 hall sensors on each way sensor array circuit board 3 set up each other independently and voltage output end connects to 50 data acquisition joint mouths 10 of core together, the utility model discloses when operation, hall sensor turns into the electric signal with the electromagnetic field change signal that detects, and the electric signal is amplified, filtered through the signal conditioning circuit, carries out A/D conversion by data acquisition card, provides the computer for analysis processes, obtains the defect information of rail; the computer processes and analyzes the magnetic leakage signals of the sensors in three directions during data processing, and can intuitively reflect the defect distribution and characteristics of the surface of the measured steel rail. The defect detection of the whole top surface and two side surfaces of the steel rail can be realized.
The utility model can realize the comprehensive detection of the defects of the top surface and the side surface of the steel rail, and on one hand, the bar magnets, the top surface of the steel rail and the two side surfaces form an axial magnetization loop, thereby detecting the defects of the steel rail by utilizing the magnetic leakage detection technology; on the other hand, three sensor array circuit boards arranged in the U-shaped groove of the bar magnet can respectively obtain leakage magnetic field signals in three directions of XYZ, and transverse full-coverage detection of the surface of the steel rail can be achieved.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw, its characterized in that: including being rectangular form and longitudinal section bar magnet (1) for the U type, this bar magnet (1) handstand sets up, and the both sides outer wall of bar magnet (1) all rotates through connecting axle (5) and wheel (4) and is connected, and bar magnet (1) suspends in the top outside of rail (2) under the support of wheel (4) and connecting axle (5), and the interval is provided with three routes sensor array circuit board (3), three routes on the inner wall of bar magnet (1) sensor array circuit board (3) are located the top and left and right both sides of rail (2) respectively, sensor array circuit board (3) are including being used for data acquisition joint mouth (10) that link to each other with the computer and being used for carrying out nondestructive test's multiseriate sensor array to rail (2), and multiseriate sensor array links to each other with the input of data acquisition joint mouth (10).
2. The hand-push type steel rail nondestructive testing device based on magnetic flux leakage flaw detection of claim 1, characterized in that: the top of the bar magnet (1) is connected with the hand push rod (6).
3. The hand-push type steel rail nondestructive testing device based on magnetic flux leakage flaw detection of claim 1, characterized in that: the multiple rows of sensor arrays are arranged at intervals along the length direction of the bar-shaped magnet (1).
4. The hand-push type steel rail nondestructive testing device based on magnetic flux leakage flaw detection of claim 3, characterized in that: the sensor array be provided with three groups, each group sensor array comprises a plurality of linear hall sensors that arrange in proper order along the width direction of bar magnet (1), parallel arrangement and the orientation of the response face of a plurality of linear hall sensors between a plurality of linear hall sensors, the response face of the linear hall sensor in three groups sensor array is perpendicular to three coordinate axis of space coordinate system respectively.
5. The hand-push type steel rail nondestructive testing device based on magnetic flux leakage flaw detection of claim 4, characterized in that: the length of each set of the sensor array is 70 mm.
6. The hand-push type steel rail nondestructive testing device based on magnetic flux leakage flaw detection of claim 5, characterized in that: each group of the sensor array consists of 16 linear Hall sensors which are sequentially arranged along the width direction of the bar-shaped magnet (1).
7. The hand-push type steel rail nondestructive testing device based on magnetic flux leakage flaw detection of claim 1, characterized in that: the wheels (4) are rubber wheels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964862.4U CN210572108U (en) | 2019-06-25 | 2019-06-25 | Hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920964862.4U CN210572108U (en) | 2019-06-25 | 2019-06-25 | Hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210572108U true CN210572108U (en) | 2020-05-19 |
Family
ID=70630427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920964862.4U Active CN210572108U (en) | 2019-06-25 | 2019-06-25 | Hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210572108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678948A (en) * | 2020-06-02 | 2020-09-18 | 四川大学 | High-speed nondestructive detection method for surface defects of steel rail and implementation device thereof |
| CN112542895A (en) * | 2020-11-05 | 2021-03-23 | 北京全路通信信号研究设计院集团有限公司 | Steel rail traction current electricity taking device and application thereof |
-
2019
- 2019-06-25 CN CN201920964862.4U patent/CN210572108U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678948A (en) * | 2020-06-02 | 2020-09-18 | 四川大学 | High-speed nondestructive detection method for surface defects of steel rail and implementation device thereof |
| CN111678948B (en) * | 2020-06-02 | 2022-07-19 | 四川大学 | High-speed nondestructive detection method for surface defects of steel rail and implementation device thereof |
| CN112542895A (en) * | 2020-11-05 | 2021-03-23 | 北京全路通信信号研究设计院集团有限公司 | Steel rail traction current electricity taking device and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101219672B (en) | Non-contact type dynamic measuring method for wheel diameter based on laser and method thereof | |
| CN206292206U (en) | A kind of automobile-used detection probe of rail examination based on Magnetic Flux Leakage Inspecting | |
| CN210572108U (en) | Hand propelled rail nondestructive test device based on magnetic leakage is detected a flaw | |
| CN102221354B (en) | Method for measuring surface harshness of multi-measuring-point floating positioning | |
| CN101887048A (en) | Barkhausen detection system and method under condition of high-speed operations | |
| CN106568836A (en) | Flexible eddy-current array probe used for rapid and accurate detection of conductive material | |
| CN105292175B (en) | Detection method, detecting system and the vehicle of rail defect | |
| CN103693073A (en) | Contactless vehicle wheel diameter dynamical measuring device and method | |
| CN102759564A (en) | Variable diameter pipe external magnetic memory detection device | |
| CN111766292A (en) | Steel rail magnetic flux leakage detection device based on zero lift-off rolling magnetization | |
| CN204255773U (en) | The pick-up unit of two pressure head on-line checkingi modulus of elasticity of wood | |
| CN202195800U (en) | Automatic measuring device for steel rail | |
| CN104101537A (en) | Method and device for testing lateral stiffness of tubular belt | |
| CN103448751A (en) | Noncontact wheel position sensing device | |
| CN109975399A (en) | A kind of rail eddy detection system and method | |
| CN202393372U (en) | Ceramic brick planeness detection device | |
| CN113834824A (en) | Elevator traction steel belt defect detection device based on vision and electromagnetic technology | |
| CN206019881U (en) | Instrumented wheelset measurement apparatus | |
| CN103698390A (en) | Defect and magnetic leakage detection device for underground oil storage tank | |
| CN207141101U (en) | A kind of vehicle-mounted removable rail in high speed railway hurt acoustic emission detection system | |
| CN202794107U (en) | Variable diameter pipe outside magnetic memory detection device | |
| CN208313888U (en) | Wire rope standard equipment | |
| CN115060407B (en) | Flexible multi-mode sensing device for measuring multi-dimensional wheel rail force and fusion method | |
| CN202994120U (en) | High-precision one-dimensional morphology detector | |
| CN108622130A (en) | A kind of novel track component detection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |