CN-122009256-A - Automatic auxiliary inspection trolley for retarder of control

CN122009256ACN 122009256 ACN122009256 ACN 122009256ACN-122009256-A

Abstract

The invention discloses an automatic control auxiliary inspection trolley for a retarder, belongs to the technical field of inspection of railway equipment, and can solve the technical problems of low inspection efficiency and lack of accuracy in life prediction of the retarder. The trolley comprises a walking roof searching module, a parameter collecting and processing module and a data analyzing module, wherein the walking roof searching module automatically walks along a steel rail to identify a retarder, finish alignment and track locking and obtain position information, the parameter collecting and processing module simulates the rolling retarder through a mechanical executing mechanism and synchronously collects and preprocesses full-duty cycle performance data to obtain a multi-dimensional data set, the data analyzing module judges the fault state of the retarder based on the multi-dimensional data set, and combines a performance attenuation factor and a working environment factor to construct a multi-factor coupling life degradation model to predict the residual service life, and generates routing inspection information to be transmitted to a maintenance management terminal. The invention realizes automatic inspection of the retarder, improves the detection precision and efficiency, and provides scientific data support for retarder maintenance.

Inventors

GUO JINPING
DONG SHIMO
XU CHAOQI
DONG HAOWEI
DONG ZHICUN

Assignees

国铁友连(厦门)科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260324

Claims (9)

1. An automatic control's auxiliary inspection dolly of retarder, characterized by comprising: the running roof searching module is used for automatically running along the railway steel rail to be detected to identify the retarder, performing rail locking fixation after aligning the retarder, and simultaneously acquiring the position information of the retarder; the parameter acquisition processing module is used for executing simulated rolling loading operation on the retarder through the mechanical executing mechanism, synchronously acquiring the full-duty cycle performance data of the retarder in the simulated rolling loading operation, preprocessing the full-duty cycle performance data and storing the full-duty cycle performance data; the data analysis module is used for judging the fault state of the retarder based on the multi-dimensional data set, constructing a multi-factor coupling life degradation model by combining the performance attenuation factor and the working environment factor, predicting the residual service life of the retarder, generating inspection information of the retarder based on the residual service life and the fault state judging result, and transmitting the inspection information to the maintenance management terminal.
2. The automatic control retarder auxiliary inspection trolley is characterized by comprising a servo running mechanism, a steel rail locking assembly, a laser alignment unit and a track positioning unit, wherein the servo running mechanism is used for driving the retarder auxiliary inspection trolley to automatically run along a railway steel rail to be inspected, the laser alignment unit scans a mushroom head outline boundary of the retarder through laser ranging to determine the center position of the retarder and drives the servo running mechanism to complete alignment of a mechanical actuating mechanism of the retarder auxiliary inspection trolley and the retarder, the steel rail locking assembly is used for clamping the railway steel rail after alignment to fix a locking rail of the retarder auxiliary inspection trolley, and the track positioning unit is used for collecting position information of the retarder after alignment.
3. The automatic control retarder auxiliary inspection trolley according to claim 2, wherein the alignment deviation of the alignment is less than or equal to 1cm, the steel rail locking assembly and the parameter acquisition processing module are electrically interlocked, and the parameter acquisition processing module can start the simulated rolling loading operation only after the steel rail locking assembly completes rail locking fixation and outputs an in-place signal.
4. The automatic control retarder auxiliary inspection trolley is characterized in that the parameter acquisition processing module comprises a servo electric cylinder, an analog rolling wheel, a multi-sensor acquisition unit and a data preprocessing unit, wherein the servo electric cylinder is in transmission connection with the analog rolling wheel to form the mechanical executing mechanism, the mechanical executing mechanism is used for receiving a bit signal to drive the analog rolling wheel to execute the analog rolling operation of pressing loading and unloading rebound on the retarder by a preset standard loading parameter, and the multi-sensor acquisition unit and the servo electric cylinder synchronously trigger the acquisition of full-duty cycle performance data of the retarder and transmit the full-duty cycle performance data to the data preprocessing unit for preprocessing.
5. The automatic control retarder auxiliary inspection trolley according to claim 4, wherein the sampling frequency of the multi-sensor acquisition unit is 120Hz-360Hz, the full-duty cycle performance data comprise piston displacement, working counter force and piston return time, and the preprocessing process comprises the steps of sequentially performing time sequence alignment, sliding filtering denoising, outlier rejection, missing value filling and curve fitting on the piston displacement and the working counter force to obtain a displacement time sequence curve and a counter force time sequence curve, and accordingly obtaining a multi-dimensional data set comprising the piston return time, the displacement time sequence curve and the counter force time sequence curve.
6. The automatically controlled retarder assist patrol trolley of claim 5, wherein the fault condition discrimination method is: S1, dividing a displacement time sequence curve into a non-return displacement curve and a return displacement curve by taking return time of a piston in a multi-dimensional data set as a demarcation point, and dividing a counter force time sequence curve into a non-return counter force curve and a return counter force curve to obtain four curves; S2, discretizing four curves at equal intervals according to sampling frequency, constructing a non-return displacement matrix, a non-return counterforce matrix and a return counterforce matrix, and splicing to obtain a multi-channel fusion matrix; s3, constructing a multi-channel standard fusion matrix set for the multi-dimensional data set of the healthy deceleration item according to S1-S2 based on the multi-dimensional data set of the preset healthy deceleration item, and calculating a mean matrix and a variance matrix of the multi-channel standard fusion matrix set according to the multi-channel standard fusion matrix set; S4, adopting a weighted dynamic time warping algorithm to iteratively match the multi-channel fusion matrix with the mean matrix, and simultaneously calculating the channel variance of the multi-channel fusion matrix; s5, calculating the deviation degree based on the iteration matching result, the channel variance and the variance matrix, and judging the fault state of the retarder according to the deviation degree to obtain the fault state result of the retarder.
7. The automatic control auxiliary inspection trolley for the retarder according to claim 6 is characterized in that the iteration termination condition of iteration matching is that the weight change amount is less than 0.01 or the iteration number reaches the preset upper limit number, when the deviation is more than or equal to 0.58, the retarder is judged to be in a fault state, and otherwise, the retarder is judged to be in a non-fault state.
8. The automatically controlled retarder assist patrol trolley of claim 1, wherein the remaining life prediction method is: Step a, acquiring a historical multidimensional data set of a retarder and train operation data and service environment data of a service line corresponding to the retarder, and respectively extracting a performance attenuation factor representing self performance change of the retarder, a load factor representing service load influence and an environment factor representing service environment influence, wherein the working environment factors are the load factor and the environment factor; step b, taking the performance attenuation factors as degradation dependent variables, taking the load factors and the environment factors as independent variables, solving degradation contribution weights corresponding to the factors through a multi-element nonlinear fitting algorithm, and constructing a life degradation reference model; step c, inputting the current multidimensional data set of the retarder into a life degradation reference model, and carrying out individual working condition adaptation and correction on degradation coefficients of the life degradation reference model to obtain a multi-factor coupling life degradation model adapting to the actual service state of the retarder; and d, calculating the residual service duration of the performance degradation quantity of the retarder reaching a preset failure threshold value based on the multi-factor coupling life degradation model, and outputting the residual service duration as the residual service life of the retarder.
9. The automatically controlled retarder auxiliary inspection trolley of claim 8, wherein the performance attenuation factors comprise a piston maximum stroke attenuation rate, a working counter force degradation rate and a return time extension rate, the environmental factors are a rail temperature fluctuation range and an environmental humidity fluctuation range, and the load factors are daily train passing frequencies of a service line.

Description

Automatic auxiliary inspection trolley for retarder of control Technical Field The invention relates to the technical field of railway equipment inspection, in particular to an automatic control auxiliary inspection trolley for a retarder. Background The railway retarder is core safety equipment in a hump speed regulation system of a railway marshalling station, is widely applied to speed regulation and control in the process of rolling a railway vehicle, and the stability and reliability of working performance of the railway retarder directly determine the efficiency and driving safety of the railway marshalling operation. At present, the domestic railway station is mainly used for daily inspection and performance detection of the retarder in a traditional manual inspection mode, and the inspection personnel are relied on to visually inspect dominant faults such as appearance damage and shell oil leakage of the retarder, and the action capacity and rebound performance of the retarder are qualitatively judged in a manual stepping mode. The mode has the advantages that the inspection efficiency is low, the labor intensity is high, the operation cost is high, meanwhile, the detection result is greatly influenced by the professional level and subjective experience of inspection staff, quantitative detection data of the working performance of the retarder cannot be obtained, hidden faults such as abrasion of internal components of the retarder, performance attenuation and the like are difficult to identify, scientific pre-judgment on the residual service life of the retarder cannot be realized, safety accidents such as overspeed sliding and continuous hanging conflict of vehicles are extremely easy to be caused due to failure and missed detection and misjudgment, and the development requirements of intelligent and unmanned operation and maintenance of a modern railway station cannot be adapted. Aiming at a plurality of defects existing in manual inspection of the retarder, research and development of related automatic inspection equipment have been carried out in the industry, such as a retarder auxiliary inspection trolley based on PLC disclosed in China patent CN214523786U, the scheme identifies the position of the retarder through a photoelectric sensor, the push rod cylinder drives the push rod and the pressure sensor to finish the push detection of the retarder, and meanwhile, the rail clamping and fixing are realized by means of the mechanical transmission linkage clamping plate of the push action, so that the semi-automation of inspection of the retarder is realized to a certain extent, and the manual operation intensity is reduced. The prior art still has the obvious technical defects that firstly, single-point pressure detection data can be obtained only through a pressure sensor, multi-dimensional performance data such as piston displacement, working counter force, return time and the like in the full working cycle of the downward loading and unloading rebound of the retarder cannot be synchronously collected, accurate judgment of the fault type and the fault degree of the retarder is difficult to realize, secondly, the standardized preprocessing flow of the detection data is lacking, the original detection data is easily interfered by field environment and mechanical vibration, the detection precision and the data reliability are insufficient, thirdly, a life prediction model is not built by combining the performance attenuation rule of the retarder, the service environment and the load working condition, the quantification prediction of the residual service life of the retarder cannot be realized, the preventive maintenance of the full life cycle of the retarder cannot be supported, and the industrial pain point with insufficient operation and maintenance intelligent degree of the retarder cannot be fundamentally solved. Disclosure of Invention The invention provides an automatic control retarder auxiliary inspection trolley which solves the problems that the existing retarder inspection relies on manual handheld equipment for detection, the operation efficiency is low, the detection precision and the standardization degree are insufficient, the line safety risk exists in manual field operation, and the automation of the performance state of the retarder and the full-period accurate monitoring are difficult to realize. In order to solve the problems, according to one aspect of the invention, the invention discloses an automatic control retarder auxiliary inspection trolley, which comprises a walking and top searching module, a parameter acquisition and processing module and a data analysis module; the running roof searching module is used for automatically running along the railway steel rail to be detected to identify the retarder, performing rail locking fixation after aligning the retarder, and simultaneously acquiring the position information of the retarder; the parameter acquisition processing