Sound-based railway vehicle wheel set damage detection method

Abstract

The invention discloses a sound-based railway vehicle wheel set damage detection method, and belongs to the field of railway traffic transportation safety. The method specifically comprises the following steps: firstly, installing a speed measurement positioning device, a sound acquisition device and a control processing device outside a railway operation limit; when a train passes, the speed measuring and positioning device records the speed and position of wheels in a holographic mode, and meanwhile the sound collecting device records sound in a holographic mode. Drawing a time-position curve S1 of each wheel based on the speed and the position; s2, drawing a time-position curve corresponding to each wheel based on the position and the sound; finally, the distance D between the time-position curves S1 and S2 is calculated, whether the distance D is smaller than a set threshold value or not is judged, and if yes, it is judged that abnormal sound exists in the wheels, namely, the wheels are damaged or the running quality is poor; otherwise, the wheel is normal, and wheel damage detection, operation quality detection and overload and unbalanced load detection are completed. A non-contact dynamic detection mode is adopted, a railway line is not transformed, and the practicability is high.

Description

technical field [0001] The invention belongs to the field of railway traffic safety, and in particular relates to a sound-based method for detecting wheelset damage of railway vehicles. Background technique [0002] my country's railway transportation has developed rapidly. The national railway operation mileage has reached 150,000 kilometers, basically covering cities with a population of more than 200,000 people. The construction of the "eight vertical and eight horizontal" railway transportation network has been completed, forming the world's most modernized railway network with reasonable layout and extensive coverage. rail network and high-speed rail network; however, the issue of rail transport safety remains critical. [0003] Wheelset is a large component that carries railway vehicles and is one of the key components to ensure the safety of train operation. The railway vehicle operation safety monitoring system (5T) subsystem TPDS (vehicle operation quality trackside...

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Problems solved by technology

[0004] The installation of the TPDS system is complex and the detection conditions are harsh. It is necessary to install fixtures on the rails, grind the rails, and replace sleepers and track slabs, etc., and operate within the railway operating limits. Construction, operation, High maintenance risks and high costs lead to limitations in the TPDS system; due to the characteristic limitations of the above sensors, TPDS also has strict restrictions on the running speed of trains

[0005] In addition to TPDS, the means of wheel set detection in the prior art is manual detection after the vehicle is put into storage, which has low detection efficiency, heavy work, and high missed detection rate; therefore, the detection devices and detection methods for wheel sets and other components have fallen behind The development status of railway transportation

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