CN103969342A - Locomotive wheelset connecting rod pin crack ultrasonic probe - Google Patents
Locomotive wheelset connecting rod pin crack ultrasonic probe Download PDFInfo
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- CN103969342A CN103969342A CN201410222109.XA CN201410222109A CN103969342A CN 103969342 A CN103969342 A CN 103969342A CN 201410222109 A CN201410222109 A CN 201410222109A CN 103969342 A CN103969342 A CN 103969342A
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- link pin
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Abstract
The invention discloses a locomotive wheelset connecting rod pin crack ultrasonic probe. The locomotive wheelset connecting rod pin crack ultrasonic probe comprises two organic glass delay blocks, a sound insulation layer and two double-crystal probes with flaw detection chips, wherein the sound insulation layer is vertically arranged between the two organic glass delay blocks; the flaw detection chip with an emission end and the flaw detection chip with a receiving end are respectively arranged on the double-crystal probes on two sides of the sound insulation layer; two ferromagnets are attached to both sides of the organic glass delay blocks; the organic glass delay blocks, the sound insulation layer and the ferromagnets are encapsulated in a probe shell; a connector is arranged on one side of the probe shell. The locomotive wheelset connecting rod pin crack ultrasonic probe realizes crack flaw detection of a locomotive wheelset at a single independent finished product state and an assembling state (namely, non-individual, independent and un-disassembly state, i.e. non-detachable overhauling), as well as in-service online detection, real-time tracking and monitoring of connecting rod pins, and the quality of products is improved.
Description
Technical field
The present invention relates to probe, relate in particular to a kind of train wheel link pin crack ultrasonic probe, belong to probe technologies field.
Background technology
At present, the Non-Destructive Testing of domestic train wheel link pin is unassembled or to disintegrate be single and separate state in the situation that, adopts magnetic powder inspection to carry out defects detection to its surface.
The technical requirement of train wheel link pin product drawing is: magnetic powder inspection detection is carried out in link pin surface, and do not allow crackle.Existing is in link pin single-piece, independently under finished product state to link pin Non-Destructive Testing process, carries out magnetic powder inspection detection, and can only detect the crack defect on link pin surface to detecting position.Due in locomotive operation process, accidental wheel link pin fracture accident; For the wheel of assembled state, to link pin, because it detects position, not exposing, is invalid therefore adopt magnetic powder inspection to detect, and the Detection task that for this reason solves link pin crackle is extremely urgent.
As seen from the above, existingly still be there is to following shortcoming in link pin Non-Destructive Testing:
1, train wheel link pin can only be detected at the surface crack defect of single-piece, separate state, the crack defect of the assembling of train wheel link pin and the state that do not disintegrate can not be detected;
2, cannot realize in-service online detection, real-time follow-up and the monitoring of train wheel link pin.
Train wheel link pin is in thermal treatment, machining and assembling manufacture process, due to the reason such as process means is improper, cause link pin R3 arc surface to crack, detection for link pin crackle, the lossless detection method that How to choose is appropriate, determine correct Non-Destructive Testing scheme, just can reach the object of safe and reliable Non-Destructive Testing.Link pin is at single-piece, independence and surface exposure state, and it is feasible and effective adopting magnetic powder inspection detection method; But not dismantling and the non-single-piece of assembled state, independence and in-service presence when not disintegration of link pin state is component inspection, because its non-naked eyes in detection position of link pin detect position as seen, do not expose, by adopting existing ultrasonic probe to detect the UT (Ultrasonic Testing) of train wheel link pin crackle, can not effectively detect link pin crack defect.
Summary of the invention
The object of the invention is to: for the link pin crack defect in above-mentioned all situations, detect, a kind of train wheel link pin crack ultrasonic probe is provided, effectively having realized link pin crack defect UT (Ultrasonic Testing) detects, using and be detected the exposed part of part as the scanning face of UT (Ultrasonic Testing) detection, detect the crackle that is hidden or block position by other part, reach the object that crack defect nondestructive examination is detected; Thereby can effectively solve above-mentioned problems of the prior art.
The object of the invention is to realize by following technical proposals: a kind of train wheel link pin crack ultrasonic probe, comprise two organic glass delay blocks, the double crystal probe of sound insulating layer and two band flaw detection wafers, sound insulating layer is vertically arranged in the centre of two organic glass delay blocks, with the flaw detection wafer of transmitting terminal be located at respectively on the double crystal probe of sound insulating layer both sides with the flaw detection wafer of receiving end, both sides at organic glass delay block respectively have two ferromagnets, described organic glass delay block, sound insulating layer and ferromagnet are packaged in probing shell, a side at this probing shell is provided with jointing.
As a kind of optimal way, described flaw detection wafer inclination arranges, and its angle of inclination is 2 °-16 °.
As further preferred embodiment, described flaw detection wafer and link pin axis direction tilt 1 °-8 °.
As a kind of optimal way, the probe focal length of double crystal probe is 3mm-20mm.
As a kind of optimal way, the thickness of organic glass delay block is 2mm-7mm.
As a kind of optimal way, the thickness of sound insulating layer is 0.5mm～1mm.
In the present invention, the effect of part is as follows:
Flaw detection wafer and angle and probe focal length: flaw detection wafer is two, one of them is for launching sound wave, another one is used for accepting sound wave, except two wafers of double crystal probe all tilt 2 °-16 °, also two wafers is set and the tilt angle of 1 °-4 ° of link pin axis direction simultaneously; The pitch angle that changes probe wafer, can change two wafer Main beam intersection points is the size of position and the areal coverage of focal length, to reached the object of effective detection link pin crack defect.
The larger detection faces in pitch angle is nearer, and areal coverage is more short and thick, surveys thickness less; Pitch angle is less, and intersection point is more long narrow from test surface, surveys thickness larger; For this reason, determine transmitting wafer and the focal length size that receives wafer in link pin ultrasonic probe, with link pin crack depth scope, set.We set with link pin axis direction to tilt on the basis of angle of 1 °-8 ° at two wafers, probe focal length is set within the scope of 5mm-15mm simultaneously, can reaches the object to the high-sensitivity detection of beam intersects areal coverage and flaw detection region crack defect.
Compared with prior art, beneficial effect of the present invention: train wheel link pin crack ultrasonic sonde configuration of the present invention is simple, reasonable, possesses following advantage:
1, realizing train wheel is that the crack defect that non-single-piece and independent, the state that do not disintegrate are not dismantled while overhauling detects at single-piece, independent finished products state, assembled state;
2, realize in-service online detection, real-time follow-up and the monitoring of train wheel link pin;
3, realize train wheel link pin surface and Inner Defect Testing, to improving technique, improving the quality of products, provide reliable basis simultaneously;
4, reduce locomotive inspection and repair cost, shorten locomotive maintenance cycle, guarantee the quality of train wheel, improve reliability and the security of locomotive operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of train wheel link pin crack ultrasonic probe of the present invention;
Fig. 2 is the A-A diagrammatic cross-section of Fig. 1.
In figure: 1-probing shell, 2-organic glass delay block, 3-ferromagnet, 4-sound insulating layer, the 5-wafer of detecting a flaw, 6-double crystal probe, 7-jointing.
Embodiment
Below in conjunction with specific embodiment, the present invention is further illustrated.
Disclosed all features in this instructions, or the step in disclosed all methods or process, except the speciality and/or step of mutual repulsion, all can combine by any way, unless narration especially, all can be replaced by other equivalences or the alternative features with similar object,, unless narration especially, an embodiment in a series of equivalences of each feature or similar characteristics.
As shown in Figure 1, 2, train wheel link pin crack ultrasonic probe of the present invention comprises the double crystal probe 6 of two organic glass delay blocks 2, sound insulating layer 4 and two band flaw detection wafers 5.Sound insulating layer 4 is vertically arranged in the centre of two organic glass delay blocks 2, with the flaw detection wafer of transmitting terminal be located at respectively on the double crystal probe of sound insulating layer both sides with the flaw detection wafer of receiving end, both sides at organic glass delay block 2 respectively have two ferromagnets 3, and described organic glass delay block 2, sound insulating layer 4 and ferromagnet 3 are packaged in probing shell 1; A side at this probing shell 1 is provided with the jointing 7 being connected with guide rod for probe scanning.Jointing 7, when the in-service online detection of link pin, has played the connection function of probe and guide rod, guarantees that probe is at the orderly mobile scanning path of link pin small space.
At the sound insulating layer of intermediate arrangement of two organic glass delay blocks of probe, be in order to prevent that launching sound wave directly seals in reception wafer, and stop probe transmitting wafer and receive the phase mutual interference of wafer, the thickness of the sound insulating layer of for this reason popping one's head in is that 0.8mm scope is best.
In link pin probe, because transmitting and receiving of double crystal probe separate, and use extension block, so greatly reduced detection blind area, be more conducive to the in-plant crack defect detection of link pin simultaneously.According to link pin structure and crack, the thickness of organic glass delay block is 4mm.
Described flaw detection wafer inclination arranges, and its angle of inclination is 5 °; Described flaw detection wafer and link pin axis direction tilt 3 °.Thereby reached the object of effective detection link pin crack defect.
The probe focal length of double crystal probe is 3mm-20mm; Can reach the object to the high-sensitivity detection of beam intersects areal coverage and flaw detection region crack defect.
In addition, when the in-service online UT (Ultrasonic Testing) of link pin detects operation, narrow space due to flaw detection operation, ultrasonic probe is at the circumferencial direction on the link pin face of cylinder and axially can not carry out in order scanning, for guaranteeing that probe can be adsorbed on the scanning face of link pin workpiece, thereby reach good couple state and scanning motion track, material and surfaceness with different size model link pin, set the size of ferromagnet absorption affinity, the pressure applying on probe when absorption affinity and manual ultrasonic flaw detection is suitable, its absorption affinity is 0.1kgf～0.5kgf scope, can reach good couple state and orderly scanning motion track.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a train wheel link pin crack ultrasonic is popped one's head in, it is characterized in that: the double crystal probe that comprises two organic glass delay blocks, sound insulating layer and two band flaw detection wafers, sound insulating layer is vertically arranged in the centre of two organic glass delay blocks, with the flaw detection wafer of transmitting terminal be located at respectively on the double crystal probe of sound insulating layer both sides with the flaw detection wafer of receiving end, both sides at organic glass delay block respectively have two ferromagnets, described organic glass delay block, sound insulating layer and ferromagnet are packaged in probing shell, in a side of this probing shell, are provided with jointing.
2. train wheel link pin crack ultrasonic probe as claimed in claim 1, is characterized in that: described flaw detection wafer inclination arranges, and its angle of inclination is 2 °-16 °.
3. train wheel link pin crack ultrasonic probe as claimed in claim 2, is characterized in that: described flaw detection wafer and link pin axis direction tilt 1 °-8 °.
4. train wheel link pin crack ultrasonic probe as claimed in claim 1, is characterized in that: the probe focal length of double crystal probe is 3mm-20mm.
5. train wheel link pin crack ultrasonic probe as claimed in claim 1, is characterized in that: the thickness of organic glass delay block is 2mm-7mm.
6. train wheel link pin crack ultrasonic probe as claimed in claim 1, is characterized in that: the thickness of sound insulating layer is 0.5mm～1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410222109.XA CN103969342B (en) | 2014-05-26 | 2014-05-26 | Train wheel link pin crack ultrasonic is popped one's head in |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410222109.XA CN103969342B (en) | 2014-05-26 | 2014-05-26 | Train wheel link pin crack ultrasonic is popped one's head in |
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| CN103969342A true CN103969342A (en) | 2014-08-06 |
| CN103969342B CN103969342B (en) | 2018-04-03 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820016A (en) * | 2015-04-15 | 2015-08-05 | 南车戚墅堰机车车辆工艺研究所有限公司 | Locomotive connecting shaft fatigue crack ultrasonic detection method |
| CN106153721A (en) * | 2016-06-21 | 2016-11-23 | 中国飞机强度研究所 | A kind of crack in bolt detection method and screw thread crack detection device |
| CN110824008A (en) * | 2019-11-19 | 2020-02-21 | 中广核检测技术有限公司 | Ultrasonic detection probe and method for cotter pin fastener |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820016A (en) * | 2015-04-15 | 2015-08-05 | 南车戚墅堰机车车辆工艺研究所有限公司 | Locomotive connecting shaft fatigue crack ultrasonic detection method |
| CN106153721A (en) * | 2016-06-21 | 2016-11-23 | 中国飞机强度研究所 | A kind of crack in bolt detection method and screw thread crack detection device |
| CN110824008A (en) * | 2019-11-19 | 2020-02-21 | 中广核检测技术有限公司 | Ultrasonic detection probe and method for cotter pin fastener |
| CN110824008B (en) * | 2019-11-19 | 2022-05-24 | 中广核检测技术有限公司 | Ultrasonic detection probe and detection method for control rod guide cylinder cotter pin |
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| CN103969342B (en) | 2018-04-03 |
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