CN109387561A - A kind of machine automobile-used bolt failure detector and method based on eddy detection technology - Google Patents
A kind of machine automobile-used bolt failure detector and method based on eddy detection technology Download PDFInfo
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- CN109387561A CN109387561A CN201710664296.0A CN201710664296A CN109387561A CN 109387561 A CN109387561 A CN 109387561A CN 201710664296 A CN201710664296 A CN 201710664296A CN 109387561 A CN109387561 A CN 109387561A
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- 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
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Abstract
The present invention relates to a kind of machine automobile-used bolt failure detector and method based on eddy detection technology, the device with eddy current flaw detec and dedicated swirl probe by being used in conjunction with each other, the device is the transmission for carrying out eddy current inspection and the machine assembly of signal acquisition, and matched eddy current flaw detec and dedicated swirl probe are the units for analyzing collected electric signal.The device provides power using adjustable DC motor, uniform and stable operating method is realized in terms of the rotation of bolt, dedicated swirl probe feeding, the phenomenon that avoiding big bring detection error hand-manipulated, inefficiency, can effectively improve detection accuracy and working efficiency.The device is easy to operate simultaneously, and quickly, working efficiency is greatly improved, and batch detection may be implemented, and substantially increases labor productivity.
Description
Technical field
The invention belongs to the new processes of one kind in field of non destructive testing EDDY CURRENT, in line with simple, quick, applicable
The principle of wide scope, can quickly, accurately and reliably threaded cylindricals such as the bolt to certain diameter and length and stud
The surface crack defect of element is detected, and accomplishes the purpose that the defect of components is identified in advance, prevented trouble before it happens.More particularly to
A kind of machine automobile-used bolt failure detector and method based on eddy detection technology.
Background technique
The threaded cylindricals part such as bolt, stud is that a kind of equipment or components of being widely used in play connection, fastening effect
Element, commonly used in all trades and professions such as aviation, railway, nuclear power, communications and transportation, the part plays connection and fastening when in use
Effect is generally axially stretched or is compressed, the power of several situations such as radial shear, bending stress in load condition, wherein
Axially suffered tensile stress or compression is main stress condition to the part, suffered pulling force have it is big, have it is small, in industry
In the use structure of grade, the stress of bolt or stud is especially big, it plays the role of most important.Inside bolt or stud
It generates, the more existing defect that can't see from the appearance, is led under the action of stress in process of production or when subsequent use
Cause suddenly fracture or pulling force failure, can all make the Joint failure of components, will lead to when serious personnel life and property by
There is a kind of potential threat for the user in serious loss.Therefore, the threaded connections such as bolt fastening is found in advance
The defects of face crack of part, can take precautions against in time and prevent the serious consequence of life and property loss caused by bolt fracture,
It can effectively guarantee the normal operation of equipment.Currently, in field of non destructive testing, the screw threads such as the lesser bolt of specification and stud
Connector does not have effective, succinct defect inspection method and means, and the present invention provides a kind of methods for solving the problems, such as this.
Summary of the invention
The machine automobile-used bolt failure detector and side that the technical problem to be solved by the present invention is to a kind of based on eddy detection technology
Method.For the device by being used in conjunction with each other with eddy current flaw detec and dedicated swirl probe, which is the biography for carrying out eddy current inspection
Dynamic and signal acquisition machine assembly, matched eddy current flaw detec and dedicated swirl probe be by collected electric signal into
The unit of row analysis.The device provides power using adjustable DC motor, in terms of the rotation of bolt, dedicated swirl probe feeding
It the phenomenon that realizing uniform and stable operating method, avoiding bring detection error hand-manipulated big, inefficiency, can be with
Effectively improve detection accuracy and working efficiency.The device is easy to operate simultaneously, and quickly, working efficiency is greatly improved, Ke Yishi
Existing batch detection, substantially increases labor productivity.
For this purpose, title provided by the invention are as follows: bolt eddy current detection method and device.
The advantages of bolt eddy current detection method and device of the present invention and feature are:
Bolt eddy current detection method and device of the present invention, which provide, a kind of utilizes eddy-current technique detection bolt and screwing element
New process and new method；
Bolt eddy current detection method and device of the present invention are easy to operate, high-efficient；
Bolt eddy current detection method and device of the present invention rotate bolt at the uniform velocity, and probe does linear uniform motion simultaneously to spiral shell
Bolt carries out circumferencial direction scanning, and detection position is comprehensive, and detection accuracy is high, is not easy to miss inspection.
A kind of machine automobile-used bolt failure detector based on eddy detection technology, which is characterized in that the device includes direct current
Machine, shaft coupling, transmission device, flaw detecting rack one, flaw detecting rack two, shaft coupling, transmission belt, adjusting seat one, adjusting seat two, platform, control
Button processed, bolt to be checked, realize uniform and stable operating method, avoid that bring detection error hand-manipulated is big, efficiency
Low phenomenon can effectively improve detection accuracy and working efficiency.
The direct current generator is two adjustable speed miniature DC motors, and the shaft coupling is connected with the transmission shaft.Institute
Flaw detecting rack one and flaw detecting rack two are stated, plays the role of support flaw detection arm, and can be in the horizontal direction on the guide shaft of transmission device
On move reciprocatingly；The adjusting seat one, adjusting seat are second is that roller turn device, plays the role of supporting tested bolt, simultaneously
Bolt can be driven to be rotated, realize the comprehensive EDDY CURRENT of bolt；The shaft coupling and transmission belt be synchronous pulley and
Synchronous belt connects the output shaft of micromotor and the input shaft of rotary rollers；The control button is the electricity for having certain function
Machine regulation button.
In rotation, central axis wants keeping parallelism, while bolt being driven to rotate for the adjusting seat one and adjusting seat two, this
Sample can just guarantee that bolt at the uniform velocity rotates, and there is a phenomenon where sideslip, the central axis of two rollers and the central axis three of bolt
Straight line is parallel to each other.During the EDDY CURRENT of bolt, guarantee that the center line of probe is overlapped with the longitudinal center line of bolt
To ensure detection accuracy and sensitivity.
A kind of machine automobile-used bolt method of detection based on eddy detection technology, which is characterized in that this method includes 101, directly
Galvanic electricity machine is opened, and is driven roller rotation, so that bolt to be checked and then rotates, while flaw detecting rack one being driven to do straight line in the horizontal direction
Movement, to make the dedicated swirl probe inlayed on flaw detection arm also move in a straight line therewith, due to the detection of dedicated swirl probe
Angle is consistent with the thread form angle of bolt, and the thread root for being vortexed dedicated probe and bolt may be implemented to be in close contact, therefore can protect
Good coupling effect is demonstrate,proved, keeps eddy current signal undistorted, to ensure that the reliability and accuracy of result of detection.102, work as inspection
When surveying polished rod (not having screw thread) part of bolt, direct current generator is opened, and roller rotation is driven, so that part bolt and then rotates, together
When part shaft coupling and transmission device rotation, drive flaw detecting rack two do the linear motion of horizontal direction, thus make detect a flaw arm on inlay
Dedicated swirl probe also move in a straight line therewith, complete whole detections of bolt.
Detailed description of the invention
Fig. 1 is a kind of schematic three dimensional views of the machine automobile-used bolt failure detector based on eddy detection technology of the present invention；
Fig. 2 is a kind of machine automobile-used bolt failure detector right view based on eddy detection technology of the present invention；
Fig. 3 is that a kind of flaw detection arm transmission principle of the machine automobile-used bolt failure detector based on eddy detection technology of the present invention shows
It is intended to；
Fig. 4 is a kind of rotary rollers position adjustment of machine automobile-used bolt failure detector based on eddy detection technology of the present invention
Schematic device；
Fig. 5 is a kind of bottom fastening bolt thread segment flaw detection of machine automobile-used bolt failure detector based on eddy detection technology of the present invention
Schematic diagram；
A kind of flow chart of the machine automobile-used bolt method of detection based on eddy detection technology of Fig. 6 present invention.
Specific embodiment
As shown in FIG. 1, FIG. 1 is a kind of three-dimensionals of the machine automobile-used bolt failure detector based on eddy detection technology of the present invention to show
It is intended to；Two adjustable speed miniature DC motors 1 are connected by shaft coupling 2 with transmission shaft 3.Two flaw detecting racks 1, flaw detecting racks
25, play the role of support flaw detection arm, flaw detecting rack 1, flaw detecting rack 25 can be in the horizontal direction on the guide shaft of transmission shaft 3
It moves reciprocatingly.Adjusting seat 1 and adjusting seat 29 are roller turn devices, play the role of supporting tested bolt, while can be with
It drives bolt to be rotated, realizes the comprehensive EDDY CURRENT of bolt.Shaft coupling 6 and transmission belt 7 are synchronous pulley and synchronous belt,
Connect the output shaft of micromotor and the input shaft of rotary rollers.Platform 10 is workbench, and control button 11 is that have centainly
The motor regulation button of function.Bolt 12 to be checked is bolt to be detected.
Detect bolt threaded portion when, direct current generator 1 open, drive roller rotation, thus 12 bolt of bolt to be checked with
Rotation, while flaw detecting rack 1 being driven to move in a straight line in the horizontal direction, thus the dedicated swirl probe inlayed on the arm that makes to detect a flaw
Also move in a straight line therewith, due to dedicated swirl probe detection angle it is consistent with the thread form angle of bolt, vortex dedicated probe with
The thread root of bolt may be implemented to be in close contact, therefore can guarantee good coupling effect, keep eddy current signal undistorted, thus
It ensure that the reliability and accuracy of result of detection.When detecting polished rod (not having screw thread) part of bolt, direct current generator 1 is opened
It opens, drives roller rotation, so that bolt to be checked 12 and then rotates, while shaft coupling 2 and transmission shaft 3 rotate, and drive flaw detecting rack 25
The linear motion of horizontal direction is done, so that the dedicated swirl probe inlayed on flaw detection arm be made also to move in a straight line therewith, completes spiral shell
Whole detections of bolt.
As shown in figure 3, flaw detecting rack 1 is the support base for detecting the face crack of threaded portion of bolt, flaw detecting rack 25 is
Detect the support base of the face crack of bolt light rod (without screw thread) part.It is rotated by motor and drives the rotation of 6 lead screw of shaft coupling
To realize that the movement of flaw detecting rack 25, the realization that screws that flaw detecting rack 1 passes through probe and screw thread move.
As shown in figure 5,13 be bolt, 14 pop one's head in for dedicated swirl, and probe head is made into and the consistent shape in form of thread angle
Shape realization screws.Guide shaft plays the role of guiding and fixation, and ball retainer plays the role of sliding, to realize the smallest resistance
Power.
As shown in figure 4, two rollers are in rotation, central axis wants keeping parallelism, while bolt being driven to rotate, so
It can guarantee that bolt at the uniform velocity rotates, not there is a phenomenon where sideslip, central axis three of the central axis of two rollers and bolt are straight
Line is parallel to each other.During the EDDY CURRENT of bolt, guarantees that the center line of probe is overlapped with the longitudinal center line of bolt, such as scheme
Shown in 2,14 are mounted on the schematic diagram on flaw detection arm for dedicated swirl probe, at work, it is desirable that the center line and bolt of probe
Longitudinal center line be overlapped, to ensure detection accuracy and sensitivity.
Fig. 6 is a kind of flow chart of the machine automobile-used bolt method of detection based on eddy detection technology of the present invention, 101, direct current
Motor is opened, and is driven roller rotation, so that bolt to be checked and then rotates, while flaw detecting rack one being driven to do straight line fortune in the horizontal direction
It is dynamic, to make the dedicated swirl probe inlayed on flaw detection arm also move in a straight line therewith, due to the search angle of dedicated swirl probe
Degree is consistent with the thread form angle of bolt, and the thread root for being vortexed dedicated probe and bolt may be implemented to be in close contact, therefore can guarantee
Good coupling effect keeps eddy current signal undistorted, to ensure that the reliability and accuracy of result of detection.102, work as detection
When polished rod (not having screw thread) part of bolt, direct current generator is opened, and roller rotation is driven, so that part bolt and then rotates, simultaneously
Part shaft coupling and transmission device rotation, drive flaw detecting rack two to do the linear motion of horizontal direction, to inlay on the arm that makes to detect a flaw
Dedicated swirl probe also moves in a straight line therewith, completes whole detections of bolt.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (4)
1. a kind of machine automobile-used bolt failure detector based on eddy detection technology, which is characterized in that the device include direct current generator,
Shaft coupling, transmission device, flaw detecting rack one, flaw detecting rack two, shaft coupling, transmission belt, adjusting seat one, adjusting seat two, platform, control are pressed
Button, bolt to be checked, realize uniform and stable operating method, avoid that bring detection error hand-manipulated is big, inefficiency
The phenomenon that, detection accuracy and working efficiency can be effectively improved.
2. a kind of machine automobile-used bolt failure detector based on eddy detection technology according to claim 1, which is characterized in that
The direct current generator is two adjustable speed miniature DC motors, and the shaft coupling is connected with the transmission shaft.The flaw detecting rack
One and flaw detecting rack two, play the role of support flaw detection arm, and can do in the horizontal direction on the guide shaft of transmission device reciprocal
Movement；The adjusting seat one, adjusting seat are second is that roller turn device, plays the role of supporting tested bolt, while can drive
Bolt is rotated, and realizes the comprehensive EDDY CURRENT of bolt；The shaft coupling and transmission belt are synchronous pulley and synchronous belt, are connected
Connect the output shaft of micromotor and the input shaft of rotary rollers；The control button be have certain function motor adjust by
Button.
3. a kind of machine automobile-used bolt failure detector based on eddy detection technology according to claim 1, feature exists
In in rotation, central axis wants keeping parallelism, while bolt being driven to rotate, so just for the adjusting seat one and adjusting seat two
It can guarantee that bolt at the uniform velocity rotates, not there is a phenomenon where sideslip, central axis three of the central axis of two rollers and bolt are straight
Line is parallel to each other.During the EDDY CURRENT of bolt, guarantee that the center line of probe is overlapped with the longitudinal center line of bolt with true
Protect detection accuracy and sensitivity.
4. a kind of machine automobile-used bolt method of detection based on eddy detection technology, which is characterized in that this method includes 101, direct current
Motor is opened, and is driven roller rotation, so that bolt to be checked and then rotates, while flaw detecting rack one being driven to do straight line fortune in the horizontal direction
It is dynamic, to make the dedicated swirl probe inlayed on flaw detection arm also move in a straight line therewith, due to the search angle of dedicated swirl probe
Degree is consistent with the thread form angle of bolt, and the thread root for being vortexed dedicated probe and bolt may be implemented to be in close contact, therefore can guarantee
Good coupling effect keeps eddy current signal undistorted, to ensure that the reliability and accuracy of result of detection.102, work as detection
When polished rod (not having screw thread) part of bolt, direct current generator is opened, and roller rotation is driven, so that part bolt and then rotates, simultaneously
Part shaft coupling and transmission device rotation, drive flaw detecting rack two to do the linear motion of horizontal direction, to inlay on the arm that makes to detect a flaw
Dedicated swirl probe also moves in a straight line therewith, completes whole detections of bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710664296.0A CN109387561A (en) | 2017-08-04 | 2017-08-04 | A kind of machine automobile-used bolt failure detector and method based on eddy detection technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710664296.0A CN109387561A (en) | 2017-08-04 | 2017-08-04 | A kind of machine automobile-used bolt failure detector and method based on eddy detection technology |
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| Publication Number | Publication Date |
|---|---|
| CN109387561A true CN109387561A (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710664296.0A Pending CN109387561A (en) | 2017-08-04 | 2017-08-04 | A kind of machine automobile-used bolt failure detector and method based on eddy detection technology |
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| CN (1) | CN109387561A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946066A (en) * | 2021-02-05 | 2021-06-11 | 内蒙古科技大学 | Surface detection device for revolving body |
Citations (4)
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|---|---|---|---|---|
| US4454473A (en) * | 1981-07-13 | 1984-06-12 | Magnaflux Corporation | Spinning probe apparatus for inspection of bolt holes and the like |
| CN101144826A (en) * | 2007-11-07 | 2008-03-19 | 钢铁研究总院 | Heavy caliber seamless steel pipe supersonic and vortex combined automatic detection device and uses |
| CN202814919U (en) * | 2012-09-19 | 2013-03-20 | 国核电站运行服务技术有限公司 | Eddy current testing device for king bolts of reactor pressure vessels of nuclear power stations |
| JP2014142187A (en) * | 2013-01-22 | 2014-08-07 | Mitsubishi Heavy Ind Ltd | Eddy current flaw detection probe and inspection method |
-
2017
- 2017-08-04 CN CN201710664296.0A patent/CN109387561A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454473A (en) * | 1981-07-13 | 1984-06-12 | Magnaflux Corporation | Spinning probe apparatus for inspection of bolt holes and the like |
| CN101144826A (en) * | 2007-11-07 | 2008-03-19 | 钢铁研究总院 | Heavy caliber seamless steel pipe supersonic and vortex combined automatic detection device and uses |
| CN202814919U (en) * | 2012-09-19 | 2013-03-20 | 国核电站运行服务技术有限公司 | Eddy current testing device for king bolts of reactor pressure vessels of nuclear power stations |
| JP2014142187A (en) * | 2013-01-22 | 2014-08-07 | Mitsubishi Heavy Ind Ltd | Eddy current flaw detection probe and inspection method |
Non-Patent Citations (3)
| Title |
|---|
| LEACH BRYAN: "Eddy Current Testing Higher throughput, smaller flaw detection, greater precision,and more cost-efficient NDT", 《ADVANCED MATERIALS & PROCESSES》 * |
| 王晓翔 等: "核反应堆压力容器主螺栓、主螺母涡流检测技术", 《无损探伤》 * |
| 金斌等: "螺栓裂纹的涡流自动探伤技术和系统", 《无损检测》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112946066A (en) * | 2021-02-05 | 2021-06-11 | 内蒙古科技大学 | Surface detection device for revolving body |
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Application publication date: 20190226 |