CN105799733A - Magnetic dynamic continuous scanning system for whole section of seamless rail - Google Patents
Magnetic dynamic continuous scanning system for whole section of seamless rail Download PDFInfo
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- CN105799733A CN105799733A CN201610233353.5A CN201610233353A CN105799733A CN 105799733 A CN105799733 A CN 105799733A CN 201610233353 A CN201610233353 A CN 201610233353A CN 105799733 A CN105799733 A CN 105799733A
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- 238000001514 detection method Methods 0.000 claims abstract description 86
- 238000000605 extraction Methods 0.000 claims abstract description 4
- 208000014674 injury Diseases 0.000 claims description 18
- 230000008733 trauma Effects 0.000 claims description 18
- 230000005641 tunneling Effects 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 description 12
- 206010052428 Wound Diseases 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 9
- 238000007689 inspection Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 239000000523 sample Substances 0.000 description 6
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002787 reinforcement Effects 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000002604 ultrasonography Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 208000037974 severe injury Diseases 0.000 description 2
- 230000009528 severe injury Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 241000271559 Dromaiidae Species 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
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- 239000003814 drug Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
- B61K9/10—Measuring installations for surveying permanent way for detecting cracks in rails or welds thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention provides a magnetic dynamic continuous scanning system for the whole section of a seamless rail. The system comprises an obstacle recognition sensor, a train speed sensor, a flaw detection sensor, a mechanical launching and receiving device, a control unit and an upper computer, wherein the obstacle recognition sensor is used for recognizing obstacles such as rail clamping plates and rail junctions which affect flaw detection, the flaw detection sensor is used for conducting flaw detection on the whole section of the rail, the mechanical launching and receiving device is used for controlling launching and receiving of the flaw detection sensor, the control unit is used for automatically controlling the mechanical device to act, and the upper computer is used for intelligently processing a flaw signal and outputting flaw information and a flaw state of the rail. According to the magnetic dynamic continuous scanning system for the whole section of the seamless rail, a novel magnetic force line extraction principle is adopted to achieve online high-speed dynamic flaw detection on flaws in the whole section of the rail, and compared with flaw detection of an artificial hand-push type flaw detection trolley and a large flaw detection vehicle which adopt a traditional supersonic wave flaw detection technology, the magnetic dynamic continuous scanning system has the advantages of being high in flaw detection speed, high in sensitivity and wide in flaw detection plane.
Description
Technical field
The present invention relates to gapless rail inspection field, be specifically related to a kind of rail tunneling boring magnetic dynamically continuous scanning system.
Background technology
Owing to ultrasound wave has the advantages that penetration capacity is strong, highly sensitive, this technology is always up the Main Means of railroad track trauma detection for a long time, but the inherent limitation due to ultrasonic technology, development along with railway technology, this technology increasingly can not meet the requirement of track flaw detection, is in particular in the following aspects:
(1) owing to the bullet train speed of service is fast, EMUs axle heavy and light, the abrasion of rail horizontal and vertical are all smaller, the rolling contact fatigue (RCF) that wheel and rail interaction produce becomes main damage mode, the feature of this damage is that infant cracking occurs in surface and internally extends, and the Effect on Detecting of traditional ultrasonic surface and near surface flaw (such as rail head be full of cracks and conquassation) is poor；
(2) ultrasound wave being produced reflection near the stripping defect of the horizontal direction longitudinal extension at gauge angle, cannot detect so being imbedded in dangerous crackle below.High frequency ultrasound energy decays is relatively big, and butt welded seam region, the web of the rail or flange of rail etc. bury deeper defect detection rate and be relatively low；
(3) conventional ultrasonic wave detection technique adopts contact ultrasonic transducer to detect, and Detection results is subject to the impact of the factors such as Rail Surface geometry, roughness and cleannes；
(4) speed and sensitivity are difficult to take into account: along with the raising of train speed, the development speed of rail failure is accelerated accordingly, and also there is the trend of shortening in the detection cycle.In addition rate of traffic flow is big, although hand propelled rail flaw detector Detection accuracy is high, but its detection speed has been not suitable with the development of railway；Although large-scale inspection car detection speed higher (60km/h), but the sensitivity 10dB lower than hand propelled inspection car of detection rail head core wound.
Summary of the invention
The technical problem to be solved is: at present for the detection of railroad track trauma mainly by ultrasonic technology, but actually used middle ultrasonic technology is poor to the Effect on Detecting of surface and near surface flaw；Dangerous crackle under the stripping defect of the horizontal direction longitudinal extension at gauge angle cannot detect due to reflection；And Effect on Detecting to be subject to Rail Surface geometry, roughness and cleannes recall rate relatively low；It is difficult to take into account with sensitivity measuring process medium velocity.
For above technical problem, the technical solution used in the present invention is: provide a kind of rail tunneling boring magnetic dynamically continuous scanning system, adopt the New Magnetic Field Controlled line of force to extract principle to realize the high speed of rail defects and failures is dynamically detected, make up ultrasonic examination in inspection speed, flaw detection sensitivity, the detection of weld seam trauma, the detection of surface trauma and flange of rail wound, damage the deficiency of detection aspect.
Gapless rail tunneling boring magnetic provided by the present invention is continuous scanning system dynamically, and structure includes: obstacle recognition sensor, train speed sensor, flaw detection sensor, machinery draw off gear, control unit and host computer；Wherein control unit is connected with obstacle recognition sensor, machinery draw off gear, flaw detection sensor, train speed sensor and host computer respectively, and flaw detection sensor is connected with host computer respectively with train speed sensor.
Described obstacle recognition sensor is magnetic metal detection sensor；The signal of telecommunication can be exported when the amount of metal in this sensor effective scope of detection changes, this sensor can identify the road clamping plate on track in train travelling process and identification information is sent control unit, when clamping plate or track switch are engaged in this profession in this sensor identification, control unit control machinery draw off gear packs up flaw detection unit and magnetization unit, to avoid collision.
Described flaw detection sensor is internally installed ten flaw detection sensor unit, built-in flaw detection sensor unit employing New Magnetic Field Controlled line of force extraction principle design；Described machinery draw off gear is made up of mechanism and hydraulic system, and control unit automatically controls hydraulic cylinder action；When train operation ahead finds barrier, control unit automatically controls hydraulic cylinder action, and automatically reset after packing up flaw detection unit and magnetization unit time delay continuation detection.
Described control unit is made up of single-chip microcomputer and peripheral circuit；Described control unit exports control signal after accepting the information such as train speed signal, road clamping plate identification sensor signal, hydraulic cylinder travel switching signal and carrying out logical judgment.Shown host computer is for the process to trauma signal, the trauma degree (as less than slight wound, slight wound, severe injury, rail break etc.) at the final output location of rail defects and failures, quantitative information comprehensive descision rail defects and failures position.
Workflow: be first begin to self-inspection after system start-up, self-inspection completes and confirms that each parts normally rear flaw detection sensor detects being put down flaw detection sensor by hydraulic cylinder action under the control of hydraulic system.Flaw detection sensor acquisition trajectory trauma information is also uploaded computer and is processed.Detection process Zhong Ruyu road clamping plate, severely injured reinforcement point, track switch, system can automatically control puts down continuation detection after flaw detection sensor time delay are packed up in hydraulic cylinder action in advance.The location information of the characteristic points such as the severely injured reinforcement point of test line, road clamping plate has all been gathered and input system control unit before proceeding by flaw detection operation by the special lane clamping plate detection sensor that system is preposition；System controls the folding and unfolding of flaw detection sensor according to the positioning feature point information intelligent stored；As preposition dedicated barrier thing identification sensor finds that unexpected barrier also can directly control flaw detection sensor folding and unfolding.
Flaw detection sensor operation principle: first formed magnetic loop by permanent magnet and rail, then utilizes high-permeability material that the part magnetic line of force in rail is extracted and focused on, at the Hall element that focal spot is arranged.Because rail is as ferrimagnet, the disappearance (peel off, wear and tear) of rail material, internal material separate the air gap (core wound, crackle) produced and rail magnetic property all will be caused to be deteriorated, so can react the trauma situation of rail from rail inner extraction the magnetic line of force that focuses on, therefore Hall element can detect the trauma defect of rail.
The medicine have the advantages that and realize including rail head core wound, crackle, tread trauma, weld damage, RCF(rolling contact fatigue within the scope of rail tunneling boring), crushing of rail head, waveform abrasion, flange of rail corrosion and crescent moon fall accurately detecting of the traumas such as block；Realizing the high speed to rail defects and failures, online, non-contact detection, be obviously improved flaw detection efficiency, detection speed reaches more than 90km/h.
Accompanying drawing explanation
Fig. 1 track flaw detection sensor operation principle schematic diagram；
Schematic diagram when Fig. 2 is the release of track flaw detection sensor；
Fig. 3 is track flaw detection sensor schematic diagram when packing up；
Fig. 4 transducer arrangements schematic diagram.
Detailed description of the invention
As shown in Figure 1, it is provided that a kind of gapless rail tunneling boring magnetic is continuous scanning system dynamically, and structure includes: obstacle recognition sensor, train speed sensor, flaw detection sensor, machinery draw off gear, control unit and host computer；Wherein control unit is connected with obstacle recognition sensor, machinery draw off gear and host computer respectively, and flaw detection sensor is connected with host computer respectively with train speed sensor.
Obstacle recognition sensor is magnetic metal detection sensor, train travelling process identifies the road clamping plate on track and identification information is sent control unit, when clamping plate or track switch are engaged in this profession in this sensor identification, control unit control machinery draw off gear packs up flaw detection sensor, to avoid collision.Being respectively mounted ten flaw detection sensor unit inside flaw detection sensor, the distribution situation of flaw detection sensor unit is as it is shown on figure 3, built-in flaw detection sensor unit adopts magnetic balance principle design, for the collection to rail defects and failures signal；In work process, control unit carry out smart allocation according to current of traffic, it is ensured that the trauma information that host computer collects is always to the flaw detection sensor unit on rear side of train direction of advance.Machinery draw off gear is made up of mechanism and hydraulic system, and when train operation ahead finds barrier, control unit automatically controls hydraulic cylinder action, and automatically reset after packing up flaw detection sensor time delay continuation detection.
Control unit exports control signal after accepting the information such as train speed signal, obstacle recognition sensor signal, hydraulic cylinder travel switching signal and carrying out logical judgment.Shown host computer is for the process to trauma signal, the trauma degree (as less than slight wound, slight wound, severe injury, rail break etc.) at the final output location of rail defects and failures, quantitative information comprehensive descision rail defects and failures position.
Be first begin to self-inspection after system start-up, self-inspection complete and confirm after each parts are normally two probes under the control of hydraulic system, put down detection probe by hydraulic cylinder action detection, flaw detection sensor acquisition trajectory trauma information is also uploaded computer and is processed.Detection process Zhong Ruyu road clamping plate, severely injured reinforcement point, track switch, system can automatically control puts down probe continuation detection after probe time delay are packed up in hydraulic cylinder action in advance.(the location information of the characteristic points such as the severely injured reinforcement point of test line, road clamping plate has all been gathered and input system control unit before proceeding by flaw detection operation by the special lane clamping plate detection sensor that system is preposition.System controls the folding and unfolding of probe according to the positioning feature point information intelligent stored).As preposition special lane clamping plate identification sensor finds that unexpected barrier also can directly control probe folding and unfolding.
Present invention achieves including rail head core wound, crackle, tread trauma, weld damage, RCF(rolling contact fatigue within the scope of rail tunneling boring), crushing of rail head, waveform abrasion, flange of rail corrosion and crescent moon fall the accurate detection of the traumas such as block；Realizing the high speed to rail defects and failures, online, non-contact detection, be obviously improved flaw detection efficiency, detection speed reaches more than 90km/h.
Claims (2)
1. a gapless rail tunneling boring magnetic dynamically continuous scanning system, it is characterised in that: device structure includes obstacle recognition sensor, train speed sensor, flaw detection sensor, machinery draw off gear, control unit and host computer；Control unit is connected with obstacle recognition sensor, machinery draw off gear, flaw detection sensor, train speed sensor and host computer respectively；Flaw detection sensor is connected with host computer respectively with train speed sensor；
Described obstacle recognition sensor is magnetic metal detection sensor；
Described flaw detection sensor is internally installed ten flaw detection sensor unit, built-in flaw detection sensor unit employing New Magnetic Field Controlled line of force extraction principle design；
Described machinery draw off gear is made up of mechanism and hydraulic system, and control unit automatically controls hydraulic cylinder action；
Described control unit is made up of single-chip microcomputer and peripheral circuit.
2. a kind of gapless rail tunneling boring magnetic according to claim 1 dynamically continuous scanning system, it is characterized in that: described gapless rail tunneling boring magnetic dynamically continuous scanning system can realize the accurate detection of trauma on gapless rail tunneling boring, and detection speed is at more than 90km/h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610233353.5A CN105799733B (en) | 2016-04-15 | 2016-04-15 | The magnetic continuous scanning system of dynamic of gapless rail tunneling boring |
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| CN201610233353.5A CN105799733B (en) | 2016-04-15 | 2016-04-15 | The magnetic continuous scanning system of dynamic of gapless rail tunneling boring |
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| CN105799733B CN105799733B (en) | 2018-05-08 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442730A (en) * | 2016-11-03 | 2017-02-22 | 中国铁道科学研究院金属及化学研究所 | Steel rail welding seam ultrasonic detection device and detection method |
| CN109373959A (en) * | 2018-12-06 | 2019-02-22 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of railway train wheel tread defect dynamic on-line monitoring system and detection method |
| CN110174897A (en) * | 2019-06-26 | 2019-08-27 | 宝鸡知为机电技术有限公司 | Double track supersonic detecting vehicle Unmanned Systems and remote monitoring system |
| CN113281399A (en) * | 2021-05-21 | 2021-08-20 | 华中科技大学 | Magnetic focusing sensor and detection system for simultaneously detecting multiple defects |
| CN113281398A (en) * | 2021-05-21 | 2021-08-20 | 华中科技大学 | Detection sensor and detection system for needle type magnetic repulsion focusing |
| CN113791142A (en) * | 2021-09-16 | 2021-12-14 | 朱轶辰 | Rail weld detection device for rail transit fault diagnosis |
| CN116654661A (en) * | 2023-07-28 | 2023-08-29 | 山西科为磁感技术有限公司 | Ferromagnetic material detecting system for mining material conveyor |
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| CN110936978B (en) * | 2019-12-13 | 2021-02-02 | 中铁第四勘察设计院集团有限公司 | Ballastless track interlayer gap measuring method and device based on measuring trolley |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109373959A (en) * | 2018-12-06 | 2019-02-22 | 马鞍山市雷狮轨道交通装备有限公司 | A kind of railway train wheel tread defect dynamic on-line monitoring system and detection method |
| CN109373959B (en) * | 2018-12-06 | 2024-08-02 | 马鞍山市雷狮轨道交通装备有限公司 | Online dynamic detection system and detection method for tread defects of train wheels |
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| CN113281399A (en) * | 2021-05-21 | 2021-08-20 | 华中科技大学 | Magnetic focusing sensor and detection system for simultaneously detecting multiple defects |
| CN113281398B (en) * | 2021-05-21 | 2023-09-01 | 华中科技大学 | Needle type magnetic repulsion focusing detection sensor and detection system |
| CN113281398A (en) * | 2021-05-21 | 2021-08-20 | 华中科技大学 | Detection sensor and detection system for needle type magnetic repulsion focusing |
| CN113791142A (en) * | 2021-09-16 | 2021-12-14 | 朱轶辰 | Rail weld detection device for rail transit fault diagnosis |
| CN113791142B (en) * | 2021-09-16 | 2024-05-07 | 朱轶辰 | Rail weld detection device for rail transit fault diagnosis |
| CN116654661B (en) * | 2023-07-28 | 2023-10-27 | 山西科为磁感技术有限公司 | Ferromagnetic material detecting system for mining material conveyor |
| CN116654661A (en) * | 2023-07-28 | 2023-08-29 | 山西科为磁感技术有限公司 | Ferromagnetic material detecting system for mining material conveyor |
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Address after: 030024 room 336, third floor, Dongmin science and technology building, building 10, Qianfeng South Road, Wanbailin District, Taiyuan City, Shanxi Province Patentee after: Shanxi Kewei magnetic induction technology Co.,Ltd. Address before: 030024 room 336, third floor, Dongmin science and technology building, building 10, Qianfeng South Road, Wanbailin District, Taiyuan City, Shanxi Province Patentee before: SHANXI KEWEI INDUCTION TECH CO.,LTD. |