Sleeper beam damage monitoring method, system and device
A damage monitoring and damage location technology, which is applied in the field of rail transit, can solve the problems of inability to accurately judge the damage location and damage severity of the corbel beam, and achieve the effect of improving accuracy
Inactive Publication Date: 2020-04-24
JIANGSU UNIV OF TECH
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Problems solved by technology
[0004] In order to solve the problem that the existing technology cannot accurately judge the damage position and damage severity of the corbel beam, the present invention provides a corbel damage monitoring method
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[0068] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0069] figure 1 It shows a flow chart of a damage monitoring method for a corbel 1 provided by an embodiment of the present invention. The monitoring method monitors the acoustic wave signal of the corbel 1 through an acoustic emission sensor 3, and then outputs it to an acoustic emission acquisition card after being amplified by a preamplifier. Afterwards, it is transmitted to the host computer to analyze the monitoring signal. Specifically, the technical sol...
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The invention relates to the technical field of rail transit, and particularly discloses a sleeper beam damage monitoring method, system and device. The method comprises the following steps of acquiring a monitoring signal, comparing the monitoring signal with a first threshold value after the monitoring signal is processed for the first time, and determining whether a sleeper beam is damaged; ifthe sleeper beam is damaged, processing the monitoring signal for the second time and then comparing the monitoring signal with a second threshold value, if the monitoring signal is greater than the second threshold value, acquiring a data interval when the sleeper beam is damaged, and determining a damage degree of the sleeper beam according to the data interval; and if the sleeper beam is damaged, acquiring a frequency corresponding to each part when the sleeper beam is damaged, comparing the frequency corresponding to each part when the sleeper beam is damaged with the frequency corresponding to each part of a normal sleeper beam, and determining a damaged position of the sleeper beam. Whether the sleeper beam is damaged can be monitored, the damage degree and the damage position of thesleeper beam can be judged, sleeper beam damage monitoring accuracy is improved, and overhauling by technicians is facilitated.
Description
technical field [0001] The invention relates to the technical field of rail transit, in particular to a corbel detection method, system and device. Background technique [0002] With the increase of subway operating speed and carrying capacity, higher requirements are put forward for the safety and reliability of subway vehicle operation. The car body bolster is an important part connecting the car body underframe and the bogie. It bears a large force and the weight of the whole car, and transmits the weight to the running part through the upper and lower center discs. It also bears vertical and longitudinal loads. The effect of alternating loads such as torsion and torsion, the stress state is complex, mainly carrying the load of the running vehicle and the traction force of the vehicle, the complex stress state and working environment make fatigue damage the main failure mode of the corbel, and its main manifestations are fatigue cracks, fatigue The generation of cracks w...
Claims
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IPC IPC(8): G01N29/14G01N29/12G01N29/24G01N29/22G01N29/44
CPCG01N29/14G01N29/12G01N29/245G01N29/223G01N29/4427G01N2291/262G01N2291/0289
Inventor 刘若晨徐成张进武张焱王宇杨艺王一沫
Owner JIANGSU UNIV OF TECH