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Optical fiber online type detection device of gear box of high-speed train

A technology for high-speed trains and detection devices, which is used in measuring devices, machine gear/transmission mechanism testing, and ultrasonic/sonic/infrasonic measurements. It can solve problems such as shortages and achieve safe operation and strong electromagnetic interference resistance.

Inactive Publication Date: 2013-11-20
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention solves the current lack of corresponding monitoring products for high-speed train gearboxes, uses advanced anti-electromagnetic interference, light-weight optical fiber sensors as gearbox vibration monitoring components, and extracts gears through high-speed optical signal demodulation devices and data acquisition devices The vibration signal on the box is suitable for on-line detection of high-speed train gearboxes; the device of the present invention can realize high-precision monitoring and timely warning of gear damage such as dynamic balance of high-speed trains, gear wear, surface fatigue damage, and adhesive wear ; The device also has the advantages of strong anti-electromagnetic interference and corrosion resistance

Method used

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  • Optical fiber online type detection device of gear box of high-speed train
  • Optical fiber online type detection device of gear box of high-speed train
  • Optical fiber online type detection device of gear box of high-speed train

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specific Embodiment approach 1

[0008] Specific implementation mode one: combine figure 1 with figure 2 Describe this embodiment, this embodiment includes a broadband light source 1, a fiber optic coupler 3, a No. 1 vibration sensor 4-1, a No. 2 vibration sensor 4-2, a No. 3 vibration sensor 4-3, and a No. 1 grating temperature sensor 5-1 , No. 4 vibration sensor 6-1, No. 5 vibration sensor 6-2, No. 6 vibration sensor 6-3, No. 2 grating temperature sensor 5-2, F-P filter 7, sawtooth wave generator 8, photoelectric detector 9, Data collector 10, gear failure database 11, analysis and processing device 12, reporting device 13, early warning device 14, real-time display device 15, left semicircular base 17-1 and right semicircular base 17-2, left semicircular base 17- 1 is combined with the right semi-circular base 17-2 to form a complete ring, the back of the ring is fixed on the upper surface of the end of the gearbox housing to be detected, and the output end of the broadband light source 1 is connected to...

specific Embodiment approach 2

[0010] Specific implementation mode two: combination image 3 To illustrate this embodiment, the structures of No. 1 vibration sensor 4-1 to No. 6 vibration sensor 6-3 of the specific embodiment 1 are the same, and the vibration sensor is composed of elastic cantilever beam 18, fiber grating 19 and metal mass block 20. The side surface of the cantilever beam 18 is an isosceles triangle, and the bottom surface of the elastic cantilever beam 18 corresponding to the base of the isosceles triangle is fixed on the semi-circular metal base 17-1 or 17-2, and the fiber grating 19 is attached to the elastic cantilever beam 18. On the central line of the isosceles triangle, a circular metal mass 20 is fixed at the apex of the isosceles triangle of the elastic cantilever beam 18 . Other components and connections are the same as those in Embodiment 1.

[0011] An elastic cantilever beam 18 is based on a mass-inertial system for converting the vibration signal into a change in wavelength...

specific Embodiment approach 3

[0015] Specific implementation mode three: combination image 3 Describe this embodiment. The difference between this embodiment and Embodiment 1 is that the No. 1 vibration sensor (4-1) to the No. 3 vibration sensor (4-3) are evenly distributed on the left semi-circular metal base (17-1) along the circumferential direction. The upper surface of the upper surface of the No. 1 vibration sensor (4-1) and the length direction of the bottom of the No. 2 vibration sensor (4-2) differ by an angle of 45 degrees, and the length of the bottom of the No. 1 vibration sensor (4-1) The length direction differs from the length direction of the bottom edge of No. 3 vibration sensor (4-3) at an angle of 90 degrees, and No. 4 vibration sensor (6-1) to No. 6 vibration sensor (6-3) are evenly distributed in the right semicircular ring along the circumferential direction. On the upper surface of the base (17-2), the length direction of the bottom edge of No. four vibration sensors (6-1) differs f...

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Abstract

The invention relates to an optical fiber online type detection device of a gear box of a high-speed train, aiming to solve the problem that corresponding monitoring products for the gear box of the high-speed train are lacked. The detection device comprises a wideband light source, an optical fiber coupler, a vibration sensor No.1, a vibration sensor No.2, a vibration sensor No.3, a grating temperature sensor No.1, a vibration sensor No.4, a vibration sensor No.5, a vibration sensor No.6, a grating temperature sensor No.2, an F-P (Fabry-Perot) filter, a sawtooth wave generator, a photoelectric detector, a data collector, a gear fault database, an analysis processing device, a report form device, an early-warning device, a real-time display device, a left semicircular base and a right semicircular base. The optical fiber online type detection device of the gear box of the high-speed train is applicable to the online detection of the gear box of the high-speed train.

Description

technical field [0001] The invention relates to an optical fiber online type high-speed train gearbox detection device. Background technique [0002] High-speed railway is a system engineering that integrates a lot of high-tech, and high-speed train is a very important part of it. Its safety status is directly related to the life safety and comfort of passengers. Important components that affect the safety of high-speed trains, such as bogies, bearings, and gearboxes, are in high-load operation for a long time, so the safety monitoring of these equipment is particularly important. So far, the maintenance of high-speed train gears has basically relied on oil detection after parking to detect the wear of the gearbox. Existing maintenance methods have a lot of randomness and subjectivity, which obviously cannot meet the monitoring and diagnosis of high-speed train gearboxes. Require. But there is no mature online fault monitoring product for high-speed train gearboxes. There...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/02G01H9/00
Inventor 刘盛春周大为陈雪峰张金涛丁树春王树芬
Owner HEILONGJIANG UNIV