CN112033675A - Method for detecting movement fault of inner ring of rolling bearing of metallurgical vehicle - Google Patents
Method for detecting movement fault of inner ring of rolling bearing of metallurgical vehicle Download PDFInfo
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- CN112033675A CN112033675A CN202010896730.XA CN202010896730A CN112033675A CN 112033675 A CN112033675 A CN 112033675A CN 202010896730 A CN202010896730 A CN 202010896730A CN 112033675 A CN112033675 A CN 112033675A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a method for detecting movement faults of an inner ring of a rolling bearing of a metallurgical car, and relates to the technical field of metallurgical railways. The method for detecting the movement fault of the inner ring of the rolling bearing of the metallurgical vehicle is characterized by comprising the following steps: the method comprises the following steps: s1, additionally arranging an ultrasonic phased array device on the end face of the bearing shaft, wherein the scanning position of the ultrasonic phased array device is as follows: the matching surface of the shaft neck and the bearing inner ring and the inner surface within the range of 10mm away from the front and back of the outer end surface of the bearing inner ring are respectively arranged on the inner surface of the shaft neck and the inner surface of the bearing inner ring. According to the method for detecting the movement fault of the inner ring of the rolling bearing of the metallurgical car, the ultrasonic phased array device is additionally arranged on the end face of the bearing shaft, so that the sign of the inner ring of the bearing at the initial movement stage can be found in time, the expansion of the movement fault of the inner ring of the bearing is prevented, the fault is eliminated at the initial stage, and on one hand, the faults such as shaft burning, hot cutting and the like caused by the movement fault of the inner ring of the bearing can; on the other hand, the damage to the axle can be reduced by timely and effectively finding the moving fault of the bearing inner ring, and the axle scrapping caused by the moving fault of the bearing inner ring is avoided.
Description
Technical Field
The invention relates to the technical field of metallurgical railways, in particular to a method for detecting movement faults of an inner ring of a rolling bearing of a metallurgical vehicle.
Background
At present, the movement fault of the inner ring of the rolling bearing of the metallurgical car adopts a visual inspection mode, namely the distance between the outer end surface of the inner ring of the bearing and the end surface of a shaft is visually inspected in the maintenance process, and if the distance is less than 10mm, the inner ring of the bearing is considered to move. However, in the practical maintenance process, the distance between the inner ring of the bearing and the end surface of the shaft is possibly changed due to the difference of the size of the bearing fittings, the length of the shaft neck, the matching position of the bearing and the shaft neck and the like, so that the method for judging the movement result of the inner ring of the bearing is inaccurate.
The bearing inner race movement can be divided into two stages. In the initial stage: the bearing inner ring and the shaft neck rotate relatively due to heating caused by the assembly size of the bearing, the fault of a bearing component and the like; and a second stage: the bearing inner ring is moved outwards under the action of transverse force.
The existing detection mode cannot find the relative rotation between the bearing inner ring and the journal in time, the relative rotation can be found only when the fault is expanded to the second stage, the time interval for moving the bearing inner ring to the damaged state is short, and the significance in overhauling is not great.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method for detecting the movement fault of the inner ring of the rolling bearing of the metallurgical vehicle, which solves the problems that the relative rotation between the inner ring of the bearing and the shaft neck cannot be found in time in the existing detection mode, the relative rotation is possibly found only when the fault is expanded to the second stage, the time interval for the inner ring of the bearing to move to the damaged state is short, and the detection method is not meaningful in maintenance.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a method for detecting movement faults of an inner ring of a rolling bearing of a metallurgical vehicle comprises the following steps:
s1, additionally arranging an ultrasonic phased array device on the end face of the bearing shaft, wherein the scanning position of the ultrasonic phased array device is as follows: the inner surfaces of the matching surface of the shaft neck and the bearing inner ring and the front and back of the outer end surface of the bearing inner ring within 10mm respectively;
s2, setting parameters of the ultrasonic phased array device, wherein the specific conditions are as follows:
the area detection adopts a 64-channel ultrasonic phased array flaw detector, a probe adopts 5MHz frequency and 32 array elements, the spacing between the array elements is 0.5mm, and the length of the array elements is 10 mm;
the scanning type is fan-shaped, the transmitting array element and the receiving array element are arranged from 1 to 33, the scanning angle is-30 degrees, the stepping angle is 1 degree, and the focusing depth is 155 mm; the flaw detection sensitivity is based on 1mm deep artificial notch at 165mm from the end face of the shaft, and the reference is the depth;
unlike conventional ultrasonic inspection, since phased array inspection is a multi-angle beam, it is obviously not reasonable to use the same sensitivity for each beam. Each beam represents a different angle of refraction and its energy index of refraction is also different. In order to ensure that the amplitude of a single defect at each angle is consistent during imaging, gain compensation is required, namely a TCG curve is required to be made and A scanning and S scanning are simultaneously displayed during detection;
s3, scanning the detected part by the ultrasonic phased array device in step S1 during operation, wherein the scanning operation is as follows:
under the condition of not disassembling the bearing, a shaft end face is used for sector scanning, a key scanning area is set to be 15-165 mm away from the shaft end face, and the defect reflection of the surface of the shaft neck in the area is scanned.
Preferably, the principle of the ultrasonic phased array device is as follows: the ultrasonic phased array detection technology is based on the Huygens principle, a probe of the ultrasonic phased array detection technology is an array consisting of a plurality of wafers, array elements of the array emit ultrasonic waves in controllable phases under the excitation of electric signals, ultrasonic beams are focused or deflected at a determined sound domain, ultrasonic echoes are converted into the electric signals and then are superposed and synthesized in the controllable phases to realize the detection of defects, generally, the inner ring of a bearing is in interference fit with a shaft neck, the position is relatively fixed, the matching surface of the bearing is smooth and free of damage, and the acoustic beams are refracted or scattered on the matching surface without echo reflection; once the bearing inner ring is loosened, the bearing inner ring can relatively rotate on a shaft neck, the axle belongs to No. 50 steel, the bearing belongs to special steel, the hardness of the bearing is greater than that of the axle steel, the bearing inner ring can scratch or wear the axle along with the increase of relative rotation time, a groove or a boss is further formed on the surface of the axle, the scanning of the joint surface of the bearing inner ring and the shaft neck is realized by utilizing an ultrasonic phased array detection technology, the defects of the groove or the boss and the like on the matching surface are found, and once the defects occur, the bearing inner ring is loosened.
(III) advantageous effects
The invention provides a method for detecting movement faults of an inner ring of a rolling bearing of a metallurgical vehicle. The method has the following beneficial effects: according to the method for detecting the movement fault of the inner ring of the rolling bearing of the metallurgical vehicle, the ultrasonic phased array device is additionally arranged on the end face of the bearing shaft, so that the sign of the inner ring of the bearing at the initial movement stage can be found in time, the expansion of the movement fault of the inner ring of the bearing is prevented, the fault is eliminated at the initial stage, on one hand, the faults such as shaft burning and hot cutting caused by the movement fault of the inner ring of the bearing can be reduced, and the occurrence of safety accidents is; on the other hand, the damage to the axle can be reduced by timely and effectively finding the moving fault of the bearing inner ring, the axle scrapping caused by the moving fault of the bearing inner ring is avoided, and the cost of spare parts is saved.
Drawings
FIG. 1 is a diagram illustrating a focusing rule setting situation according to the present invention;
FIG. 2 is a diagram illustrating a sound field simulation according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a method for detecting movement faults of an inner ring of a rolling bearing of a metallurgical vehicle is characterized by comprising the following steps: the method comprises the following steps:
s1, additionally arranging an ultrasonic phased array device on the end face of the bearing shaft, wherein the scanning position of the ultrasonic phased array device is as follows: the inner surfaces of the matching surface of the shaft neck and the bearing inner ring and the front and back of the outer end surface of the bearing inner ring within 10mm respectively;
s2, setting parameters of the ultrasonic phased array device, wherein the specific conditions are as follows:
the area detection adopts a 64-channel ultrasonic phased array flaw detector, a probe adopts 5MHz frequency and 32 array elements, the spacing between the array elements is 0.5mm, and the length of the array elements is 10 mm;
the scanning type is fan-shaped, the transmitting array element and the receiving array element are arranged from 1 to 33, the scanning angle is-30 degrees, the stepping angle is 1 degree, and the focusing depth is 155 mm; the flaw detection sensitivity is based on 1mm deep artificial notch at 165mm from the end face of the shaft, and the reference is the depth;
unlike conventional ultrasonic inspection, since phased array inspection is a multi-angle beam, it is obviously not reasonable to use the same sensitivity for each beam. Each beam represents a different angle of refraction and its energy index of refraction is also different. In order to ensure that the amplitude of a single defect at each angle is consistent during imaging, gain compensation is required, namely a TCG curve is required to be made and A scanning and S scanning are simultaneously displayed during detection;
s3, scanning the detected part by the ultrasonic phased array device in step S1 during operation, wherein the scanning operation is as follows:
under the condition of not disassembling the bearing, a shaft end face is used for sector scanning, a key scanning area is set to be 15-165 mm away from the shaft end face, and the defect reflection of the surface of the shaft neck in the area is scanned.
Wherein, the principle of installing ultrasonic phased array device does: the ultrasonic phased array detection technology is based on the Huygens principle, a probe of the ultrasonic phased array detection technology is an array consisting of a plurality of wafers, array elements of the array emit ultrasonic waves in controllable phases under the excitation of electric signals, ultrasonic beams are focused or deflected at a determined sound domain, ultrasonic echoes are converted into the electric signals and then are superposed and synthesized in the controllable phases to realize the detection of defects, generally, the inner ring of a bearing is in interference fit with a shaft neck, the position is relatively fixed, the matching surface of the bearing is smooth and free of damage, and the acoustic beams are refracted or scattered on the matching surface without echo reflection; once the bearing inner ring is loosened, the bearing inner ring can relatively rotate on a shaft neck, the axle belongs to No. 50 steel, the bearing belongs to special steel, the hardness of the bearing is greater than that of the axle steel, the bearing inner ring can scratch or wear the axle along with the increase of relative rotation time, a groove or a boss is further formed on the surface of the axle, the scanning of the joint surface of the bearing inner ring and the shaft neck is realized by utilizing an ultrasonic phased array detection technology, the defects of the groove or the boss and the like on the matching surface are found, and once the defects occur, the bearing inner ring is loosened.
During operation, as shown in fig. 1 and 2, the probe moves close to the surface of the axle in the circumferential direction, so that the key area to be scanned can be completely covered without being influenced by the bolt holes
In summary, according to the method for detecting the movement fault of the rolling bearing inner ring of the metallurgical car, the ultrasonic phased array device is additionally arranged on the end face of the bearing shaft, so that the sign of the bearing inner ring at the initial movement stage can be found in time, the expansion of the movement fault of the bearing inner ring can be prevented, the fault can be eliminated at the initial stage, on one hand, the faults such as shaft burning and hot cutting caused by the movement fault of the bearing inner ring can be reduced, and the occurrence of safety accidents can be avoided; on the other hand, the damage to the axle can be reduced by timely and effectively finding the moving fault of the bearing inner ring, the axle scrapping caused by the moving fault of the bearing inner ring is avoided, and the cost of spare parts is saved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (2)
1. A method for detecting movement faults of an inner ring of a rolling bearing of a metallurgical vehicle is characterized by comprising the following steps: the method comprises the following steps:
s1, additionally arranging an ultrasonic phased array device on the end face of the bearing shaft, wherein the scanning position of the ultrasonic phased array device is as follows: the inner surfaces of the matching surface of the shaft neck and the bearing inner ring and the front and back of the outer end surface of the bearing inner ring within 10mm respectively;
s2, setting parameters of the ultrasonic phased array device, wherein the specific conditions are as follows:
the area detection adopts a 64-channel ultrasonic phased array flaw detector, a probe adopts 5MHz frequency and 32 array elements, the spacing between the array elements is 0.5mm, and the length of the array elements is 10 mm;
the scanning type is fan-shaped, the transmitting array element and the receiving array element are arranged from 1 to 33, the scanning angle is-30 degrees, the stepping angle is 1 degree, and the focusing depth is 155 mm; the flaw detection sensitivity is based on 1mm deep artificial notch at 165mm from the end face of the shaft, and the reference is the depth;
unlike conventional ultrasonic inspection, since phased array inspection is a multi-angle beam, it is obviously not reasonable to use the same sensitivity for each beam. Each beam represents a different angle of refraction and its energy index of refraction is also different. In order to ensure that the amplitude of a single defect at each angle is consistent during imaging, gain compensation is required, namely a TCG curve is required to be made and A scanning and S scanning are simultaneously displayed during detection;
s3, scanning the detected part by the ultrasonic phased array device in step S1 during operation, wherein the scanning operation is as follows:
under the condition of not disassembling the bearing, a shaft end face is used for sector scanning, a key scanning area is set to be 15-165 mm away from the shaft end face, and the defect reflection of the surface of the shaft neck in the area is scanned.
2. The method for detecting the movement fault of the inner ring of the rolling bearing of the metallurgical vehicle according to claim 1, wherein the method comprises the following steps: the principle of the ultrasonic phased array device is as follows: the ultrasonic phased array detection technology is based on the Huygens principle, a probe of the ultrasonic phased array detection technology is an array consisting of a plurality of wafers, array elements of the array emit ultrasonic waves in controllable phases under the excitation of electric signals, ultrasonic beams are focused or deflected at a determined sound domain, ultrasonic echoes are converted into the electric signals and then are superposed and synthesized in the controllable phases to realize the detection of defects, generally, the inner ring of a bearing is in interference fit with a shaft neck, the position is relatively fixed, the matching surface of the bearing is smooth and free of damage, and the acoustic beams are refracted or scattered on the matching surface without echo reflection; once the bearing inner ring is loosened, the bearing inner ring can relatively rotate on a shaft neck, the axle belongs to No. 50 steel, the bearing belongs to special steel, the hardness of the bearing is greater than that of the axle steel, the bearing inner ring can scratch or wear the axle along with the increase of relative rotation time, a groove or a boss is further formed on the surface of the axle, the scanning of the joint surface of the bearing inner ring and the shaft neck is realized by utilizing an ultrasonic phased array detection technology, the defects of the groove or the boss and the like on the matching surface are found, and once the defects occur, the bearing inner ring is loosened.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010896730.XA CN112033675A (en) | 2020-08-31 | 2020-08-31 | Method for detecting movement fault of inner ring of rolling bearing of metallurgical vehicle |
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| CN202010896730.XA CN112033675A (en) | 2020-08-31 | 2020-08-31 | Method for detecting movement fault of inner ring of rolling bearing of metallurgical vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114624026A (en) * | 2022-03-15 | 2022-06-14 | 中国科学院苏州生物医学工程技术研究所 | High-speed bearing dynamic monitoring method and array ultrasonic transducer |
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| CN102866203A (en) * | 2012-10-12 | 2013-01-09 | 成都主导科技有限责任公司 | Phase array ultrasonic detecting device and method for solid axle |
| CN107817299A (en) * | 2017-10-13 | 2018-03-20 | 武汉理工大学 | A kind of ring automatic ultrasonic phased array lossless detection method and device |
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2020
- 2020-08-31 CN CN202010896730.XA patent/CN112033675A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102866203A (en) * | 2012-10-12 | 2013-01-09 | 成都主导科技有限责任公司 | Phase array ultrasonic detecting device and method for solid axle |
| CN107817299A (en) * | 2017-10-13 | 2018-03-20 | 武汉理工大学 | A kind of ring automatic ultrasonic phased array lossless detection method and device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114624026A (en) * | 2022-03-15 | 2022-06-14 | 中国科学院苏州生物医学工程技术研究所 | High-speed bearing dynamic monitoring method and array ultrasonic transducer |
| CN114624026B (en) * | 2022-03-15 | 2023-11-24 | 中国科学院苏州生物医学工程技术研究所 | Dynamic monitoring method for high-speed bearing and array ultrasonic transducer |
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Application publication date: 20201204 |
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