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An intelligent flaw detection method for belt-type rails based on electromechanical-optical-hydraulic integration

A belt-type and rail-based technology, which is applied in the direction of optical testing for flaws/defects, can solve problems such as efficient and continuous detection of rails, damage, etc., and achieve the effects of improved stop operation mode, high flaw detection accuracy, flaw detection speed and flaw detection efficiency

Inactive Publication Date: 2017-03-22
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 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 belt equipped with the probe moves at a given speed in the opposite direction to the running speed of the flaw detection vehicle. Using this relative speed can obtain higher detection speed and efficiency.

Method used

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  • An intelligent flaw detection method for belt-type rails based on electromechanical-optical-hydraulic integration
  • An intelligent flaw detection method for belt-type rails based on electromechanical-optical-hydraulic integration
  • An intelligent flaw detection method for belt-type rails based on electromechanical-optical-hydraulic integration

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Embodiment 1

[0016] Embodiment 1. A belt-type rail intelligent flaw detection method based on electromechanical optical-liquid integration, which consists of front and rear wheels, a vehicle frame, a motor, a gearbox, a sensor, a brake disc, a probe, a hydraulic pump, and a power supply; wherein: two The driving wheel 4 and the gear box 15 are installed on the rear axle, wherein in the gear box, the top end cover is connected to the upper end cover by top bolts, there are two pairs of gears in the gearbox, two-stage speed change, and the motor ΙΙ14 passes through the motor on the frame. On the seat suspension beam, the power supply 5 is fixed on the vehicle frame base plate by bolts, and the rear shock absorber 16 is connected with the rear axle through the lower end, and the upper end is connected with the vehicle frame.

Embodiment 2

[0017] Embodiment 2. A belt-type rail intelligent flaw detection method based on electromechanical-optical-liquid integration, wherein: the gravity sensor 17 is installed on the shell 2 of the flaw detection vehicle to check whether the flaw detection vehicle is running smoothly. The front wheels 3 and the front brake disc 11. The front shock absorber forms a guiding and braking system through the front axle.

Embodiment 3

[0018] Embodiment 3, a belt-type rail intelligent flaw detection method based on electromechanical optical liquid integration, wherein: the flaw detection equipment is composed of a pulley 9, a belt 7 and several probes 6 fixed on the belt 7, and the pulley 9 is connected with the driving pulley 4 On the contrary, the speed rotates steadily, and the rotating belt pulley 9 drives the belt 7 to move smoothly, and the flaw detection probe 6 on the belt 7 will emit laser light to the rail at a certain speed to detect the damage inside.

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Abstract

The invention discloses an intelligent flaw detection method for a belt-type rail based on the integration of electromechanical, optical and liquid. 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 belt equipped with the probe moves at a given speed towards the direction opposite to the running speed of the flaw detection vehicle, and this relative speed can be used 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 肖乾郑继峰昌超方骏王旭东
Owner EAST CHINA JIAOTONG UNIVERSITY
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