Fastener system capable of monitoring dynamic characteristics of track and monitoring method thereof

Abstract

The invention relates to the technical field of rail traffic, in particular to a fastener system capable of monitoring dynamic characteristics of a rail and a monitoring method thereof.The fastener system comprises an under-rail elastic cushion, a rigid base plate, an under-plate elastic cushion and a sleeper and further comprises a vibration electric energy conversion device, a plurality of wireless sensing integrated assemblies and a terminal data processing unit; according to the application, the elastic pad is extruded and deformed to cause the dynamic change of the resistance or voltage of the wireless sensing integrated assembly in the elastic pad, and the change electric signal is transmitted to the terminal data processing unit to be processed and analyzed, so that the system integration degree is high; according to the monitoring method, through the wireless intelligent sensing technology, the electric signal data are collected and transmitted in real time through the multiple wireless sensing integrated assemblies along with extrusion deformation of the under-rail elastic cushion and the under-plate elastic cushion, and then the dynamic characteristics and disease phenomena of the rail system are monitored and fed back in real time; dynamic, reliable and accurate big data support and part service life prediction are provided for intelligent operation and maintenance of rail transit.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a fastener system capable of monitoring dynamic characteristics of rails and a monitoring method thereof. Background technique [0002] During the operation of urban rail transit, there are many track defects that affect the safe operation of trains, such as fastener failure, rail deformation, track plate cracks, etc., among which fastener failure has a great impact on train derailment, so the work of rail fasteners Status is an important concern for track detection. The track fastener system is a key component in the seamless track. The change of the dynamic performance of the elastic backing plate, such as the dynamic stiffness, hardness and frequency-varying characteristics of the elastic backing plate, can most directly feed back the structural defects of the track, such as wheel High-frequency excitation of the rail, wavy wear of the rail, damage to parts of the fasten...

AI Technical Summary

Problems solved by technology

The track fastener system is a key component in the seamless track. The change of the dynamic performance of the elastic backing plate, such as the dynamic stiffness, hardness and frequency-varying characteristics of the elastic backing plate, can most directly feed back the structural defects of the track, such as wheel High-frequency excitation of the rail, wavy wear of the rail, damage to parts of the fastener system, and the vibration magnitude and level of the ballast bed. The magnitude increases, and the energy in the high frequency band increases significantly. These changes increase the risk of mechanical fatigue damage and failure of the elastic backing plate of the fastener. At present, the elasticity of the fastener caused by excessive vibration levels in various operating track lines The backing plate breaks and fails frequently, and the sudden breakage of the elastic backing plate of the fastener will seriously affect the safety of the line operation and increase the maintenance cost of the line

[0003] At present, there is no good way to monitor the working status of the elastic backing plate. The reason is that the existing image recognition technology of rail inspection vehicles cannot meet the frequency requirements of subway maintenance, and the collected image data is flat and non-contact, which cannot meet the track structure. The three-dimensional effect, the detection result error is relatively large

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