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An Intelligent Flaw Detection Method for Roller Rail Based on Mechatronics, Optical and Liquid Integration

A roller-type, light-liquid technology, applied in the direction of optical testing flaws/defects, can solve the problems of efficient and continuous detection of rails, damage, etc., and achieve the effect of improving stoppage operation methods, high measurement accuracy, and reducing costs

Inactive Publication Date: 2017-05-31
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical solution adopted by the present invention to solve the technical problem is: in order to overcome the deficiency that the existing traditional flaw detection equipment cannot efficiently and continuously detect rail damage on site, the principle of the present invention is that when the flaw detection vehicle moves at a certain speed on the rail, The rollers equipped with probes rotate at a given speed in the opposite direction to the running speed of the flaw detection vehicle. There are three rollers on both sides of the flaw detection vehicle, and each roller is equipped with a probe. The difference between the probes on adjacent rollers is 120 degrees. The speed of the roller relative to the flaw detection vehicle can obtain higher detection speed and efficiency

Method used

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  • An Intelligent Flaw Detection Method for Roller Rail Based on Mechatronics, Optical and Liquid Integration
  • An Intelligent Flaw Detection Method for Roller Rail Based on Mechatronics, Optical and Liquid Integration
  • An Intelligent Flaw Detection Method for Roller Rail Based on Mechatronics, Optical and Liquid Integration

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Embodiment 1

[0017] Embodiment 1. A method for intelligent flaw detection of roller-type rails based on electromechanical-optical-liquid integration,

[0018] It consists of front and rear wheels, frame, motor, gearbox, sensor, probe, brake disc, hydraulic pump, and power supply; among them: two rear wheels 6 and a gearbox 18 are installed on the rear axle, and the top end of the gearbox is The cover is connected to the upper end cover through top bolts, there are two pairs of gears in the gearbox, two-stage speed change, the motor Ι8 is suspended on the beam through the motor hanger on the frame, the power supply 10 is fixed on the bottom plate of the frame by bolts, and the rear shock absorber 7 is connected with the rear axle through the lower end, and the upper end is connected with the vehicle frame.

Embodiment 2

[0019] Embodiment 2. A roller-type rail intelligent flaw detection method based on electromechanical-optical-liquid integration, wherein: the gravity sensor 5 is installed on the shell 2 of the flaw detection vehicle to check whether the flaw detection vehicle runs smoothly, and the front wheels 4 and front shock absorbers 13 form the guiding system by the front axle.

Embodiment 3

[0020] Embodiment 3. A roller-type rail intelligent flaw detection method based on electromechanical-optical-liquid integration, wherein: the flaw detection equipment is composed of a roller 15, a roller 21 and a probe 14, and three rollers are installed on both sides of the flaw detection vehicle, each A probe is installed on the roller, and the difference between the probes on the adjacent rollers is 120 degrees, and the speed of the roller relative to the flaw detection vehicle can be used to obtain higher detection speed and efficiency. The flaw detection probe on the roller will emit laser light to the rail at a certain speed to detect the damage inside.

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Abstract

The invention discloses a roller-type rail intelligent flaw detection method based on electromechanical-optical-liquid integration. The technical solution adopted by the present invention to solve the technical problem is: when the flaw detection vehicle moves at a certain speed on the rail, the rollers equipped with probes rotate at a given speed in the opposite direction to the running speed of the flaw detection vehicle. All are equipped with three rollers, and each roller is equipped with a probe. The difference between the probes on adjacent rollers is 120 degrees. Using the speed of the rollers relative to the flaw detection vehicle can obtain higher detection speed and efficiency. The probe has photothermal modulation and wireless transmission functions. When the probe moves above the rail, it will emit laser light. When the laser hits the rail, it will generate heat. This heat will close the damage (such as tiny cracks) in the rail, so that The excited surface wave signal produces obvious peak changes, which are wirelessly transmitted to the control system on the car, and then the location and shape of the rail damage can be determined.

Description

technical field [0001] The invention relates to a new method for detecting the damage of steel rails in service. Background technique [0002] Rail flaw detection vehicle (hereinafter referred to as flaw detection vehicle) has already replaced manual flaw detection equipment in developed countries abroad, and has become the main means of detecting rail damage in service. Due to the advantages of high sensitivity, fast detection speed and accurate positioning of ultrasonic detection of rail fatigue cracks and other internal defects, domestic and foreign flaw detection vehicles have adopted ultrasonic flaw detection technology for internal crack detection, which is limited by the detection mode and ultrasonic technology. The speed is generally 10~70 km / h. Most of the flaw detection vehicles in North America adopt the stop operation method, that is, after the flaw detection vehicle discovers suspicious damage, it needs to stop and have the operator of the flaw detection vehicl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/88
Inventor 肖乾方姣杨逸航方骏邱国荣
Owner EAST CHINA JIAOTONG UNIVERSITY
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