CN105292177B - It is a kind of vibrated with axle box, impact information measure track ripple mill method - Google Patents
It is a kind of vibrated with axle box, impact information measure track ripple mill method Download PDFInfo
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Abstract
One kind is vibrated with axle box, the method of impact information measure track ripple mill, it vibrates, impact information acquisition device contains installed in vehicle in use wheel to the speed probe S on axle, installed in wheel to the vibratory impulse detection sensor A1 on the axle box bearing seat of both ends, vibratory impulse detection sensor A2, and on-line monitoring device JKQ and ripple mill ground analysis system DMXT, the speed probe S, vibratory impulse detection sensor A1, vibratory impulse detection sensor A2 is connected with on-line monitoring device JKQ, its data is downloaded to ripple mill ground analysis system DMXT by the on-line monitoring device JKQ, realize the detection of vehicle in use vehicular ripple mill information, collection, diagnosis, analysis, decision-making.The present invention is vibrated by gathering the axle box of vehicle in use, impact information, the measuring principle based on generalized resonance, is realized vehicle-mounted real-time or is downloaded the measurement and analysis for subsequently completing track ripple mill wavelength, the depth of convolution, greatly reduces labor workload.
Description
Technical field
The invention belongs to track traffic track field, and in particular to one kind is vibrated with axle box, impact information is surveyed
The method for measuring track ripple mill, it is mainly used in supporting the axle box of wheel shaft by detecting in the rail traffic vehicles such as subway move
Vibration acceleration, impact information, the wavelength of real-time measure track ripple mill, the depth of convolution.
Background technology
Track ripple mill is the irregularity phenomenon of raceway surface wave-like, is a kind of form of track defect.Track ripple is ground
Strong influence can be produced to wheel rail relation, train EEF bogie failure, caused by endanger and have：When potential safety hazard, such as car
By ripple grind crest, fall trough when produce strong vibration, not only make track ripple grind extension, make wheel, vehicle and steel
The working condition of the related each part of rail deteriorates, and accelerates the mechanical damage of the associated components such as bogie, oversteps the limit when increasing train operation
Risk and routine servicing maintenance cost, and cause the travelings such as axle fracture, bracket fixing bolt fracture, bogie frame crackle
Portion's unit failure；Second, noise pollution, when vehicle grinds section by ripple, can send howling, be the main of rail transit noise
Source, have a strong impact on the comfort level of passenger；More seriously, to a certain extent, imply causes vehicle for rail corrugation development
The danger of the major accidents such as derailing, overturning.
For these reasons, major city underground company of China formulates regular track polishing plan, reduces ripple mill pair with this
The influence of vehicle, the inordinate wear of wheel track is reduced, reduce train operation noise and improve operation stability.In order to determine track ripple
The section occurred is ground, it is necessary to measure, evaluate in time to track ripple mill.
At present, the concern to track ripple mill mainly understands two parameters：Wavelength and the depth of convolution.Train by wavelength and the depth of convolution not
With track when, it is corresponding caused by vibration and impact it is different, it is also different to the degree of injury of vehicle.Wavelength and depth of convolution concentrated expression
The light and heavy degree of ripple mill.Related data is shown：When the depth of convolution of ripple mill reaches 0.5mm, when wavelength is 0.3m, speed 60km/h is left
The right side, the dynamic loading that track rail level is born will be increased to the 151% of dead load, thereby result in rail service life shorten 50%~
75%；And the Wheel Rail Vibration as caused by being ground ripple also results in vehicle part and accelerates damage.
Measurement of the early stage to track ripple mill, chi and ripple mill small handcart are mainly surveyed using ripple mill, rely primarily on manual operation reality
Apply.Stage has developed " track checking car ".
Ripple mill surveys chi and is mainly generally 1~1.2m using static point-by-point hand dipping, measurement length, can be longitudinally long to rail
Ripple mill in the range of 0.8~1m of degree is measured, and wavelength can be surveyed and is limited in scope, and this method detection efficiency is very low, often
Ripple is wanted to be found when grinding to be formed and be developed to very serious by ground ironworker business personnel.Understood according to relevant report, because rail is beaten
The each polishing ability for grinding car is 0.1~0.2mm.When work business personnel find ripple mill track when, it is likely that ripple mill situation compared with
To be serious, it is necessary to it is polished for a plurality of times, therefore it is with high costs to polish.Meanwhile polishing is not in place, track ripple mill and
When be eliminated in the case of continue to come into operation, cause ripple mill continue to spread, can only finally switch tracks, cause great cost to disappear
Consumption.
Ripple mill small handcart can be used for rail measurement continuous over long distances, and wave-length coverage can be surveyed by expanding, and be surveyed by hand relative to pure
The ripple mill of amount surveys chi mode, and use is more convenient, and measurement efficiency is higher.But this metering system is very slow because measuring car gait of march,
It can not be carried out when subway is normally operated, the activity duration is typically scheduled at and completes same day operations task, treats that vehicle all enters offline
Behind storehouse, in the of short duration period operation at midnight to morning, due to monitoring, mileage is long, task amount is big, it is necessary to increase monitoring equipment and people
Power is put into.
With closely six speed-raisings of railway transport vehicle during the last ten years, the Quick Extended of railway construction and operation mileage, and
The fast development of urban track traffic, the importance of rail corrugation measurement is increasingly prominent, to the potential potential safety hazard of rail corrugation
Strick precaution it is too impatient to wait.Therefore, exploitation automaticity is high, can enter the technology of Mobile state on-line checking, generation to rail corrugation
The table main trend of the art, studies various track checking car technical schemes one after another.Wherein, typical scenario is published in
《Chinese railway science》06 phase in 2002, author Liu Lingping etc.：《The research and development of rail undulatory wear detecting system》, disclose
One kind is arranged on track checking car, and the device into Mobile state on-line checking is ground to rail wave.
Liu Lingping etc. exists《The research and development of rail undulatory wear detecting system》Disclosing this track checking car, to enter Mobile state online
Detection technique scheme, automaticity is high, and the labor intensity of past manual type can be greatly reduced, and improves measurement effect
Rate, good effect can be played in rail corrugation detects work.Simply, the technical scheme of this track checking car, its limitation and
Defect is also fairly obvious.For example, because track checking car detection speed is less than the conventional operation speed of railway, its work can not be with operation
Vehicle United Dispatching, and the track checking car ripple mill detection period that necessary schedule is special, thus the course of work is influenceing railway just
Often operate and do not allow frequently to use；Can not thus possess the service time detects the ripple mill state and influence to vehicle in real time；It is special
It is not track ripple mill once occurring, due to intensive more than vehicle, track ripple mill have developed rapidly, and the detection of track checking car hysteresis, cause
The very big contradiction such as non real-time nature, inadaptability.Meanwhile in measuring principle, the program uses inertia method measuring principle, to axle box
Acceleration signal carries out sampled equidistant, display and storage, and the position of rail corrugation amplitude is then represented by digital processing output
Shifting amount or standard deviation.This inertia method or inertial reference method measuring principle, its measurement accuracy cannot be guaranteed, due to acceleration
It is related to track checking car speed, track checking car speed does not reach speed during operation, and acceleration signal is faint, and signal to noise ratio is low, product
Partite transport calculates low frequency signal and easily causes integration saturation, is a kind of metering system having much room for improvement.And in recent years in railway, railcar
, in terms of fan safe detection technique, using generalized resonance, resonance and demodulation, spectrum analysis technique, represent future development side
To.
Therefore, exploitation one kind can adapt to the requirement of high speed vehicle in use working condition in structure, can be directly installed on
On vehicle in use, and the one of diagnosis is ground using the progress track ripple of advanced generalized resonance, resonance and demodulation, spectrum analysis technique
Kind rail corrugation real-time detecting system, it is possible to the defects of overcoming the above method, in a creative way in the actual operation fortune of vehicle in use
In the state of row, track ripple mill parameter is monitored in real time, accomplish vehicle in use very first time discovery rail corrugation problem,
The very first time differentiates that the order of severity, the very first time make the resolute decision to take safety measures, and this is for preventing rail corrugation
Deteriorate, prevent railway and track traffic the generation for effectively causing derailing, overturning etc. major accident because rail corrugation, have
Very important effect.
Fast-developing to adapt to subway and urban track traffic, spy's proposition one kind is vibrated with axle box, impact information measurement rail
The method of road ripple mill.
The content of the invention
The technical problem to be solved by the invention is to provide one kind can greatly reduce labor workload, also without work
Business personnel's night carries out detection operation, is adapted to what is carried out automatically during vehicle normal operation, is vibrated using axle box, impact information is surveyed
The method for measuring track ripple mill.
The technical scheme is that be implemented as described below：It is a kind of vibrated with axle box, impact information measure track ripple mill side
Method, it vibrates, impact information acquisition device contains installed in vehicle in use wheel to the speed probe S on axle, installed in wheel pair
Vibratory impulse detection sensor A1 on the axle box bearing seat of axle both ends, vibratory impulse detection sensor A2, it is vehicle-mounted
Line supervising device JKQ and the ripple for receiving on-line monitoring device JKQ downloading datas and carrying out continuing to analyze grind ground analysis system
DMXT, the speed probe S, vibratory impulse detection sensor A1, vibratory impulse detection sensor A2 and on-line monitoring device
JKQ is connected：Vibratory impulse detection sensor A1, vibratory impulse detection sensor A2 output signal are connected to on-line monitoring device
The resonance and demodulation passage of JKQ vibration monitoring passage and the measuring principle based on generalized resonance, speed probe S output signal
It is connected to on-line monitoring device JKQ speed control channel；On-line monitoring device JKQ speed probes be S's or through handling obtained car
N (preferred value 300-500, more preferred values 400) individual uniform Pulse Width Control caused by each rotation is taken turns, gathers vibratory impulse
Detection sensor A1, vibratory impulse detection sensor A2 vibration acceleration signal a1, a2 and impact c1, c2 signal are by online
Measuring principles of the supervising device JKQ based on generalized resonance converts obtained resonance and demodulation signal g1, g2, by on-line monitoring device
JKQ grinds vibration acceleration signal a1, a2 to ripple, and resonance and demodulation signal g1, g2 and rotational speed pulse signal are shaken with the ripple mill depth of convolution, wavelength
Dynamic recognition methods and ripple mill wavelength impact recognition methods carry out the real-time diagnosis of track ripple mill information vehicular measurement, analysis, determined
Plan；Or the ripple for gathering on-line monitoring device JKQ grinds vibration signal a1, a2, resonance and demodulation signal g1, g2 and rotational speed pulse signal
Data download to ripple mill ground analysis system DMXT, by ripple grind ground analysis system DMXT ripple is ground vibration acceleration signal a1,
A2, resonance and demodulation signal g1, g2 and rotational speed pulse signal grind the depth of convolution, wavelength Vibration identification method and ripple mill wavelength impact with ripple to be known
Other method carries out the diagnosis of track ripple mill information off-line type, analysis, decision-making, alarm.
Further, the ripple mill depth of convolution, wavelength Vibration identification method are：By under rotating-speed tracking parallel sampling mode, shaken from axle box
Dynamic impact detection sensor A1 is measured and handled through vibration monitoring passage, the vibration acceleration a1 of output, from axle box vibratory impulse
Detection sensor A2 is measured and handled through vibration monitoring passage, the vibration acceleration a2 of output, and unified definition is vibration acceleration
asc；With reference to speed control channel output different time t speed-frequency fn (t), by a of instant tscValue asc(t) multiple integral processing is carried out
Obtain amplitude xjs(t)=asc(t)/fn2(t), fn is the frequency of vehicle wheel rotation in formula；X is measured one by onejs(t) 1~i~n in
The computational methods of the depth of convolution of individual ripple mill are：Calculate xjs(t) (i-1) individual positive maximum subtracts the value of next negative maximum in,
Obtain the depth of convolution X of i-th of ripple milli, XiFor X1、X2、…Xi…XnFormula；X is measured one by onejs(t) 1~i~n ripple is ground in
The sampling number DB of wavelengthiMethod is：Calculate xjs(t) the sampling period in during (i-1) individual positive maximum go to subtract it is next just
Sampling period during maximum obtains the sampling number DB of i-th of ripple milli, DBiFor DB1、DB2、…DBi…DBnFormula；For
Axle box vibratory impulse detection sensor A1 and axle box vibratory impulse detection sensor A2 respective carter, its 1~i~n ripple
The wavelength AL of milliComputational methods be：
ALi=π * D*DBi/ N,
In formula, ALiFor AL1、AL2、…ALi…ALnFormula, D is wheel wheel footpath, and N is the cycle that wheel often rotates one week
Sampling number corresponding to TN=1/fn.
Further, ripple mill wavelength, which impacts recognition methods, is：By under rotating-speed tracking parallel sampling mode, from axle box vibratory impulse
Detection sensor A1 measures resonance and demodulation signal g1s of the c1 through the processing of resonance and demodulation monitoring passage, output, from axle box vibratory impulse
Detection sensor A2 measures resonance and demodulation signal g2s of the c2 through the processing of resonance and demodulation monitoring passage, output, and unified definition is resonance
Demodulated signal gsc；With reference to speed control channel output different time t speed-frequency fn (t), by the g of instant tscValue gsc(t) traveling wave is entered
Mill shock pulse extreme value analysis, which handle to obtain, impacts positive extreme value sample gjs(t) g, is measured one by onejs(t) 1~i~n ripple mill in
Wavelength sampling number DBiMethod is：Calculate gjs(t) the sampling period in during (i-1) individual positive maximum goes to subtract next
Sampling period during positive maximum obtains the sampling number DB of i-th of ripple milli, DBiFor DB1、DB2、…DB…DBnFormula；It is right
It is individual in axle box vibratory impulse detection sensor A1 and axle box vibratory impulse detection sensor A2 respective carter, its 1~i~n
The wavelength GL of ripple milliComputational methods be：
GLi=π * D*DBi/ N,
In formula, GLiFor GL1、GL2、…GLi…GLnFormula, D is wheel wheel footpath, and N is the cycle that wheel often rotates one week
Sampling number corresponding to TN=1/fn.
Ripple mill is the wavy abrasion occurred on track, and its shape (waveform) some is close close to sine wave, some
In the half-wave sine wave that crest (high position) is sharp.When vehicle grinds section by ripple, wheel, axle box dipping and heaving can be caused to shake
It is dynamic：When the wheel of vehicle runs to trough by ripple mill crest, wheel, axle box vibrate downwards；When the wheel of vehicle grinds ripple by ripple
When paddy runs to crest, wheel, axle box vibrate upwards.When speed quickly or wavelength very in short-term, wheel from trough minimum point rise
The rising edge of ripple mill is impacted to will produce during crest；When the depth of convolution is very deep and speed is very low, wheel declines from crest
Impacted to the trough that freely falling body will occurs and drop into ripple mill during trough；The general axle box for using same axle
Vibration, impact information caused by vibratory impulse detection sensor A1, vibratory impulse detection sensor A2 detection ripple mill：What is obtained shakes
Dynamic physical quantity is vibration acceleration a1, a2, and it reflects wheel, the acceleration amplitude of axle box dipping and heaving vibration and acceleration frequency
Rate；Impact c1, c2 of acquisition through resonance and demodulation be transformed to resonance and demodulation signal g1, g2 reflection be because above-mentioned reason causes wheel track
Caused resonance and demodulation amplitude and frequency of impact.
The ripple with certain depth X in certain detection section is ground, if wheel by when contact track, wheel and axle all the time
The amplitude of case is just consistently equal to the depth X of ripple mill.Amplitude x can be obtained to acceleration a multiple integrals, obtain the near of the detection section
It is similar to the amplitude sample of ripple mill pattern.
Vibration acceleration a and amplitude x classics define：For sinusoidal vibration x=Asin (2 π
Ft), have a (t)=- (2 π f)2·A·sin(2πft).Ripple mill is in itself without the concept of frequency, just as length does not have frequency in itself
Concept it is the same.Only using wheel by speed V that length is L ripple mill as reference, just have frequency f, i.e. f (t) that ripple is ground
=V (t)/L (t).Whether f (t) is changed over time depending on speed V (t) and ripple mill length L (t)：If wheel passes through Bo Mo roads
The speed of section is constant V, and the wavelength of ripple mill is isometric L, detects to obtain the frequency of ripple mill vibration then by axle box sensor
It is constant, i.e. f=V/L；If the speed that wheel grinds section by ripple is the V (t) that changes over time, the wavelength of ripple mill is
Long L, the frequency for detecting to obtain ripple mill vibration by axle box sensor then change over time, i.e. f (t)=V (t)/L；Such as
The speed that fruit wheel grinds section by ripple is constant V, and the length of ripple mill is the L (t) of Length discrepancy, is detected by axle box sensor
The frequency for obtaining ripple mill vibration then changes over time, i.e. f (t)=V/L (t).
In field of track traffic, actual conditions are that speed is change, and the wavelength of ripple mill section each ripple mill is also not phase
Deng, even if it is isometric to grind section and the section each ripple mill length in same ripple, with different speeds (being set to V1, V2) by when survey
The ripple mill frequency (being respectively f1=V1/L, f2=V2/L) that the vibration signal obtained is reacted is also different.In addition, shaken from axle box
Vibration that dynamic impact detection sensor A1, vibratory impulse detection sensor A2 are measured, impact signal are under tracking sampling mode
Obtain, the ripple mill length that tracking sampling vibration, impact sample are reflected is relevant with sampling number, between the time between every sampled point
Although every difference, it is identical apart from being spaced, even in sampling number corresponding to different speeds inferior long wave mill be also identical, Gu
Measured after being amplitude x by vibration acceleration a multiple integrals after each ripple grinds sampling number DB and calculate wavelength L, can also led to
Wavelength L is calculated after each ripple mill sampling number DB of overbump sample measurement, because DB is unrelated with speed, without considering different speeds
The lower influence for producing different frequency f1, f2 and calculating wavelength.Therefore rotating-speed tracking detection vibration and impact have superiority.
But produced under different speeds different ripples mill frequencies f1, f2 but to from axle box vibratory impulse detection sensor A1, shake
The expression for the vibration acceleration amplitude that dynamic impact detection sensor A2 is measured has an impact.According to a (t)=- (2 π f)2·A·
Sin (2 π ft), the vibration acceleration amplitude of measuring point | a (t) | grind amplitude with ripple | x (t) | relation is | a (t) |=(2 π f)2·|x
(t) |, it is known that the vibration acceleration amplitude measured from axle box vibratory impulse detection sensor A1, vibratory impulse detection sensor A2
With ripple mill frequency f2It is directly proportional, because in the case of rotating-speed tracking, signal frequency f to the speed-frequency fn of wheel be it is directly proportional,
Gu | a (t) | with rotating speed fn2It is directly proportional.
Assuming that it is a to survey to obtain ripple to grind vibration acceleration signal by axle box sensorsc, obtained by Double Integral Calculation
Ripple mill amplitude signal xjsRepresent have according to the definition of classics：xjs(t)=∫ ∫ asc(t) dtdt, for sinusoidal vibration asc(t)=
Asin (2 π ft), hasUnder rotating-speed tracking sampling condition, from
The vibration acceleration a that axle box vibratory impulse detection sensor A1, vibratory impulse detection sensor A2 are measuredsc, for different cars
Wheel speed frequency fn, asc(t) it is modified to asc(t)/fn2(t) Integral Processing obtains amplitude xjs(t), survey calculation x one by onejs(t)
In first positive maximum subtract the value of next negative maximum, obtain each ripple mill depth of convolution X1~Xn, rotating speed fn (t) by turning
Fast sensor S is obtained.The method of classical evaluation track ripple mill is the identification depth of convolution and is subject to limit value, and being greater than 0.4mm then needs
Polishing orbit.The depth of convolution of fixed each ripple mill grinds situation for evaluation track ripple and provides data obtained by this method.For wavelength phase
During to very short or speed quickly, the small depth of convolution but causes very big vibration acceleration and destructive power, therefore, according to acceleration a1,
A2, each section can also be calculated to acceleration absolute average, acceleration peak value, accelerated speed effective value caused by the ripple mill of track
Etc. submit to ripple mill to car, wheel, the rail extent of injury overall merit.
When speed quickly or wavelength very in short-term, wheel from trough rise to crest during will produce to ripple mill rising
The impact of side；When the depth of convolution is very deep and speed is very low, wheel from crest drop to trough during will occur freely falling body and
The trough for dropping into ripple mill impacts；General axle box vibratory impulse detection sensor A1, the vibratory impulse for using same axle
Impact information caused by detection sensor A2 detection ripple mills, impact c1, the c2 obtained are transformed to resonance and demodulation through resonance and demodulation
Signal g1, g2 reflection are because above-mentioned reason causes resonance and demodulation amplitude and frequency of impact caused by wheel track.The mechanism of the impact
Contain fast speed, depth of convolution depth and short three characteristic factors of wavelength；The impact means that Wheel Rail Vibration impact conditions deteriorate：On
1 group of (including 1 time or more) impact is produced when wheel is ground by a ripple.Pass through the defeated of resonance and demodulation detection impact
Go out information g, just contain the consequence of above-mentioned 3 features, the sampling number between the group of i-th -1 to the i impact is DBi.
If the ripple of track grinds caused by three above-mentioned speed, the depth of convolution and wavelength factors and only vibrated without rushing
Hit, then the harm to rail, wheel, car is still low；And if also cause impact, harm increase, thus for each track it is same all the way
I-th of ripple mill of section, same position, the depth of convolution, wavelength Vibration identification method and ripple are ground by ripple and grind wavelength impact recognition methods institute
The wavelength AL of acquisitioniAnd GLi, average, obtain mean wavelength Li=(ALi+GLi)/2；If Li/Ali<0.5, then ripple mill harm
Intensity Q i=0, characterize ripple mill and cause vibration but not yet cause obvious impact；If Li/ALi>0.5 and Li/GLi>2, then ripple
Mill endangers intensity Q i=1, characterizes ripple mill and causes and vibrates and cause obvious impact；If 1.1>Li/ALi>0.9 and 1.1>
Li/GLi>0.9, then it is Qi=2 that ripple mill, which endangers intensity, characterizes ripple mill and not only causes vibration, and causes thump；In formula
LiIt is L1、L2、…Li…LnFormula；Decision-making ripple mill length is Li=(AL if Qi=2i+GLi)/2, otherwise, then decision-making ripple is ground
Length Li=Ali；
Q=if (Q1+Q2+ ...+Qi+ ...+Qn)/n>1, i.e. the ripple mill harm of more than half of n ripple mill in the section is strong
Degree reaches 2, then sends ripple mill alarm.
In order to prevent vibrating and impact, in axle box bearing caused by the failure damage of wheel tread in itself and rail contact
Vibration caused by portion's Parts Breakdown and the detection and analysis of impulsive disturbance track ripple mill, usual way are：Ensure installation axle box
Vibratory impulse detection sensor A1, axle box vibratory impulse detection sensor A2 axle box corresponding to wheel tread and bearing state it is good
It is good；Further support method is, to it is described detect obtained vibration, impact information carries out being intended to reject tread, bearing fault
The filtering of information；It is so the mechanism that can be realized is：The rotating speed fn of tread, bearing fault information and wheel has strict letter
Number relation.Shown in accompanying drawing 4, the impact resonance and demodulation signal for being while detecting obtained some section of track is (up
Waveform) and vibration signal (downward traveling waveform), it is seen that：Impact when vibrating big is also big；The ripple of ripple mill waveform in vibration signal
The crest at peak and impact resonance and demodulation waveform corresponds, and the acceleration that section can be ground by both combined calculations ripple is maximum
It is worth (g), virtual value (g), earthquake intensity (mm/s), most long wave mill (mm), the maximum depth of convolution (mm), most shortwave mill (mm), the minimum depth of convolution
(mm), and (beginning) kilometer post (km), (end) stop kilometer post (km), the starting rotating speed (r/min) of detection, the termination turn of detection
Information between the station of fast (r/min), detection, time etc. of sampling.
The present invention utilizes vibration under rotating-speed tracking sample mode, the ripple mill information rule expressed by impact signal, by " broad sense
The mechanical fault diagnosis of resonance and resonance and demodulation " development, it is applied to the track such as subway ripple mill detection field.
The present invention is realized the measurement of track ripple mill wavelength, the depth of convolution, is ground and surveyed relative to ripple using axle box vibration, impact information
Chi, ripple mill small handcart measurement and track checking car metering system, can with normal operation speed Natural matching, greatly reduce manual working
Amount, it is not required that work business personnel's night work, reach the purpose of measurement ripple mill in real time.
Brief description of the drawings
Fig. 1 is used axle box vibration for the present invention, impact information realizes that the apparatus structure of the method for track ripple mill measurement is illustrated
Figure；
Fig. 2 is the line uplink section of Guangzhou 5 that ground analysis system DMXT diagnosis, analysis, decision-making output are ground through ripple
Section K13+334~K13+379 ripple mill diagnosis；
Fig. 3 is the line uplink section of Guangzhou 5 that ground analysis system DMXT diagnosis, analysis, decision-making output are ground through ripple
Section K9+737~K9+783 ripple mill diagnosis；
Fig. 4 be detect simultaneously obtained some section of track impact resonance and demodulation signal and vibration signal and automatically
Analyze information.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment
Reference picture 1, the present invention are used axle box vibration, the method for impact information measure track ripple mill, and it vibrates, impact information
Acquisition device contains installed in vehicle in use wheel to the speed probe S on axle, installed in wheel on the axle box bearing seat of axle both ends
Vibratory impulse detection sensor A1, vibratory impulse detection sensor A2, vehicle-mounted on-line monitoring device JKQ and connect
Receive on-line monitoring device JKQ downloading datas and continue the ripple mill ground analysis system DMXT of analysis, the speed probe
S, vibratory impulse detection sensor A1, vibratory impulse detection sensor A2 are connected with on-line monitoring device JKQ：Vibratory impulse detects
Sensors A 1, vibratory impulse detection sensor A2 output signal be connected to on-line monitoring device JKQ vibration monitoring passage and
The resonance and demodulation passage of measuring principle based on generalized resonance, speed probe S output signal are connected to on-line monitoring device JKQ
Speed control channel；On-line monitoring device JKQ speed probes be S's or through handling N (N caused by obtained wheel each rotation
For 400) individual uniform Pulse Width Control, collection vibratory impulse detection sensor A1, vibratory impulse detection sensor A2 vibration add
Rate signal a1, a2 and impact c1, c2 signal convert to obtain by measuring principles of the on-line monitoring device JKQ based on generalized resonance
Resonance and demodulation signal g1, g2, by on-line monitoring device JKQ to ripple grind vibration acceleration signal a1, a2, resonance and demodulation signal
G1, g2 and rotational speed pulse signal grind the depth of convolution, wavelength Vibration identification method and ripple mill wavelength impact recognition methods with ripple and carry out track
Real-time diagnosis, analysis, the decision-making of ripple mill information vehicular measurement；Or the ripple for gathering on-line monitoring device JKQ grinds vibration signal
A1, a2, resonance and demodulation signal g1, g2 and rotational speed pulse signal data download to ripple mill ground analysis system DMXT, grind ground by ripple
Surface analysis system DMXT grinds vibration acceleration signal a1, a2 to ripple, and resonance and demodulation signal g1, g2 and rotational speed pulse signal are ground with ripple
The depth of convolution, wavelength Vibration identification method and ripple mill wavelength, which impact recognition methods, to carry out the diagnosis of track ripple mill information off-line type, analysis, determines
Plan, alarm.
The ripple mill depth of convolution, wavelength Vibration identification method are：By under rotating-speed tracking parallel sampling mode, examined from axle box vibratory impulse
The vibration acceleration a1 that sensors A 1 measures and handles, exports through vibration monitoring passage is surveyed, detects and senses from axle box vibratory impulse
Device A2 is measured and handled through vibration monitoring passage, the vibration acceleration a2 of output, and unified definition is vibration acceleration asc；Reference turns
Fast passage output different time t speed-frequency fn (t), by a of instant tscValue asc(t) carry out Integral Processing and obtain amplitude xjs
(t)=asc(t)/fn2(t), fn is the frequency of vehicle wheel rotation in formula；X is measured one by onejs(t) depth of convolution that 1~i~n ripple is ground in
Computational methods be：Calculate xjs(t) (i-1) individual positive maximum subtracts the value of next negative maximum in, obtains i-th of ripple mill
Depth of convolution Xi, XiFor X1、X2、…Xi…XnFormula；X is measured one by onejs(t) sampled point for the wavelength that 1~i~n ripple is ground in
Number DBiMethod is：Calculate xjs(t) adopting when the sampling period in during (i-1) individual positive maximum goes to subtract next positive maximum
Sampling point number obtains the sampling number DB of i-th of ripple milli, DBiFor DB1、DB2、…DBi…DBnFormula；For axle box vibratory impulse
Detection sensor A1 and axle box vibratory impulse detection sensor A2 respective carter, the wavelength AL of the ripple mill of its 1~i~ni's
Computational methods are：
ALi=π * D*DBi/ N,
In formula, ALiFor AL1、AL2、…ALi…ALnFormula, D is wheel wheel footpath, and N is the cycle that wheel often rotates one week
Sampling number corresponding to TN=1/fn.
Ripple mill wavelength, which impacts recognition methods, is：By under rotating-speed tracking parallel sampling mode, detect and pass from axle box vibratory impulse
Sensor A1 measures resonance and demodulation signal g1s of the c1 through the processing of resonance and demodulation monitoring passage, output, detects and passes from axle box vibratory impulse
Sensor A2 measures resonance and demodulation signal g2s of the c2 through the processing of resonance and demodulation monitoring passage, output, and unified definition is believed for resonance and demodulation
Number gsc；With reference to speed control channel output different time t speed-frequency fn (t), by the g of instant tscValue gsc(t) traveling wave mill impact is entered
Pulse extreme value, which analyzes and processes to obtain, impacts positive extreme value sample gjs(t) g, is measured one by onejs(t) wavelength that 1~i~n ripple is ground in
Sampling number DBiMethod is：Calculate gjs(t) the sampling period in during (i-1) individual positive maximum goes to subtract next positive maximum
Sampling period during value obtains the sampling number DB of i-th of ripple milli, DBiFor DB1、DB2、…DBi…DBnFormula；For axle box
Vibratory impulse detection sensor A1 and axle box vibratory impulse detection sensor A2 respective carter, its 1~i~n ripple grind it
Wavelength GLiComputational methods be：
GLi=π * D*DBi/ N,
In formula, GLiFor GL1、GL2、…GLi…GLnFormula, D is wheel wheel footpath, and N is the cycle that wheel often rotates one week
Sampling number corresponding to TN=1/fn.
I-th of ripple mill in same section, same position for each track, the depth of convolution is ground by ripple, wavelength vibration is known
The wavelength AL that other method and ripple mill wavelength impact recognition methods are obtainediAnd GLi, average, obtain mean wavelength Li=(ALi
+GLi)/2；If Li/Ali<0.5, then ripple, which is ground, endangers intensity Q i=0, characterizes ripple mill and causes vibration but not yet cause obvious punching
Hit；If Li/ALi>0.5 and Li/GLi>2, then ripple, which is ground, endangers intensity Q i=1, characterizes ripple mill and causes and vibrates and cause bright
Aobvious impact；If 1.1>Li/ALi>0.9 and 1.1>Li/GLi>0.9, then it is Qi=2 that ripple mill, which endangers intensity, characterizes ripple mill not only
Vibration is caused, and causes thump；L in formulaiIt is L1、L2、…Li…LnFormula；Decision-making ripple grinds length if Qi=2
For Li=(ALi+GLi)/2, otherwise, then decision-making ripple grinds length Li=Ali；
Q=if (Q1+Q2+ ...+Qi+ ...+Qn)/n>1, i.e. the ripple mill harm of more than half of n ripple mill in the section is strong
Degree reaches 2, then sends ripple mill alarm.
Application Example
As shown in Fig. 2 it is the line uplink of Guangzhou 5 exported through ripple mill ground analysis system DMXT diagnosis, analysis, decision-making
The showing interface of road segment K13+334~K13+379 certain ripple mill diagnosis.Vibratory impulse detection sensor A1 or A2 are surveyed
Ripple mill vibration acceleration, the impact resonance and demodulation information of the segment are obtained, grinds ground analysis system DMXT processing through ripple, lower section is bent
The displacement waveform of line shows that certain ripple mill trough spacing is DBi=16 sampled points, and the impact resonance and demodulation SV waveforms of top curve show
Oscillography mill trough spacing is DBi=16 sampled points, and according to Li=π * D*DBi/N, in formula, wheel diameter D=715mm, wheel is every
The sampling number N=200 to circle, segment ripple mill wavelength are Li=3.14*715mm*16/200=179.6mm, ripple
It is deeply Xi=0.19mm.
As shown in figure 3, it is the line uplink of Guangzhou 5 exported through ripple mill ground analysis system DMXT diagnosis, analysis, decision-making
The showing interface of road segment K9+737~K9+783 certain ripple mill diagnosis.Vibratory impulse detection sensor A1 or A2 are measured
The ripple mill vibration acceleration of the segment, impact resonance and demodulation information, ground analysis system DMXT processing, lower curve are ground through ripple
Displacement waveform show certain ripple mill trough spacing be DBi=15 sampled points, the impact resonance and demodulation SV waveforms of top curve are shown
Ripple mill trough spacing is DBi=15 sampled points, and according to Ln=π * D*DBn/N, segment ripple mill wavelength is Li=3.14*
715mm*15/200=168.4mm, the depth of convolution are Xi=0.19mm, and in formula, wheel diameter D=715mm, wheel each rotation is adopted
Number of samples N=200.
Claims (2)
1. it is a kind of vibrated with axle box, impact information measure track ripple mill method, its vibrate, impact information acquisition device contain peace
Mounted in vehicle in use wheel to the speed probe S on axle, the vibratory impulse on the axle box bearing seat of axle both ends is detected installed in wheel
Sensors A 1, vibratory impulse detection sensor A2, vehicle-mounted on-line monitoring device JKQ and reception on-line monitoring device
JKQ downloading datas simultaneously carry out continuing ripple mill the ground analysis system DMXT, the speed probe S of analysis, vibratory impulse detection
Sensors A 1, vibratory impulse detection sensor A2 are connected with on-line monitoring device JKQ：Vibratory impulse detection sensor A1, vibration
Impact detection sensor A2 output signal is connected to on-line monitoring device JKQ vibration monitoring passage and based on generalized resonance
The resonance and demodulation passage of measuring principle, speed probe S output signal are connected to on-line monitoring device JKQ speed control channel；
N number of uniform pulse signal caused by the wheel each rotation that line supervising device JKQ is exported with speed probe S is passed with rotating speed
Sensor S output signal is through handling N number of uniform pulse signal caused by obtained wheel each rotation, collection vibratory impulse inspection
Sensors A 1, vibratory impulse detection sensor A2 vibration acceleration signal a1, a2 and impact c1, c2 signal is surveyed to supervise by online
Control measuring principles of the device JKQ based on generalized resonance converts obtained resonance and demodulation signal g1, g2, it is characterised in that by online
Supervising device JKQ grinds vibration acceleration signal a1, a2 to ripple, and resonance and demodulation signal g1, g2 and rotational speed pulse signal grind ripple with ripple
Deep, wavelength Vibration identification method and ripple mill wavelength impact recognition methods carry out examining in real time for track ripple mill information vehicular measurement
Disconnected, analysis, decision-making；Or the ripple for gathering on-line monitoring device JKQ grinds vibration signal a1, a2, resonance and demodulation signal g1, g2 and turn
Fast pulse data signal downloads to ripple mill ground analysis system DMXT, grinds ground analysis system DMXT by ripple and vibration acceleration is ground to ripple
Signal a1, a2 are spent, resonance and demodulation signal g1, g2 and rotational speed pulse signal grind the depth of convolution, wavelength Vibration identification method and ripple with ripple and ground
Wavelength impact recognition methods carries out the diagnosis of track ripple mill information off-line type, analysis, decision-making, alarm；
The ripple mill depth of convolution, wavelength Vibration identification method are：By under rotating-speed tracking parallel sampling mode, examined from axle box vibratory impulse
The vibration acceleration a1 that sensors A 1 measures and handles, exports through vibration monitoring passage is surveyed, detects and senses from axle box vibratory impulse
Device A2 is measured and handled through vibration monitoring passage, the vibration acceleration a2 of output, and unified definition is vibration acceleration asc；With reference to from
Speed control channel output different time t speed-frequency fn (t), by a of instant tscValue asc(t) progress multiple integral, which is handled, is shaken
Width xjs(t)=asc(t)/fn2(t), fn is the frequency of vehicle wheel rotation in formula；X is measured one by onejs(t) 1~i~n ripple mill in
The computational methods of the depth of convolution be：Calculate xjs(t) (i-1) individual positive maximum subtracts the value of next negative maximum in, obtains i-th
The depth of convolution X of individual ripple milli, XiFor X1、X2、…Xi…XnFormula；X is measured one by onejs(t) wavelength of the ripple mill of 1~i in~n it
Sampling number DBiMethod is：Calculate xjs(t) the sampling period in during (i-1) individual positive maximum goes to subtract next positive maximum
When sampling period obtain the sampling number DB of i-th ripple milli, DBiFor DB1、DB2、…DBi…DBnFormula；Shaken for axle box
Dynamic impact detection sensor A1 and axle box vibratory impulse detection sensor A2 respective carter, the ripple of the ripple mill of its 1~i~n
Long ALiComputational methods be：
ALi=π * D*DBi/ N,
In formula, ALiFor AL1、AL2、…ALi…ALnFormula, D is wheel wheel footpath, and N is the cycle T N=that wheel often rotates one week
Sampling number corresponding to 1/fn；
The ripple mill wavelength, which impacts recognition methods, is：By under rotating-speed tracking parallel sampling mode, detect and pass from axle box vibratory impulse
Sensor A1 measures resonance and demodulation signal g1s of the c1 through the processing of resonance and demodulation monitoring passage, output, detects and passes from axle box vibratory impulse
Sensor A2 measures resonance and demodulation signal g2s of the c2 through the processing of resonance and demodulation monitoring passage, output, and unified definition is believed for resonance and demodulation
Number gsc；With reference to the speed-frequency fn (t) from speed control channel output different time t, by the g of instant tscValue gsc(t) traveling wave mill punching is entered
Shock pulse extreme value analysis, which handle to obtain, impacts positive extreme value sample gjs(t) g, is measured one by onejs(t) ripple that 1~i~n ripple is ground in
The sampling number DB of lengthiMethod is：Calculate gjs(t) the sampling period in during (i-1) individual positive maximum goes to subtract next positive pole
Sampling period during big value obtains the sampling number DB of i-th of ripple milli, DBiFor DB1、DB2、…DBi…DBnFormula；For axle
Case vibratory impulse detection sensor A1 and axle box vibratory impulse detection sensor A2 respective carter, its 1~i~n ripple mill
Wavelength GLiComputational methods be：
GLi=π * D*DBi/ N,
In formula, GLiFor GL1、GL2、…GLi…GLnFormula, D is wheel wheel footpath, and N is the cycle T N=that wheel often rotates one week
Sampling number corresponding to 1/fn.
2. it is according to claim 1 vibrated with axle box, impact information measure track ripple mill method, it is characterised in that：It is right
Ground in i-th of ripple of the same section of each track, same position, the depth of convolution, wavelength Vibration identification method and ripple are ground by ripple
The wavelength AL that mill wavelength impact recognition methods is obtainediAnd GLi, average, obtain mean wavelength Li=(ALi+GLi)/2；If
Li/Ali<0.5, then ripple, which is ground, endangers intensity Q i=0, characterizes ripple mill and causes vibration but not yet cause obvious impact；If Li/
ALi>0.5 and Li/GLi>2, then ripple, which is ground, endangers intensity Q i=1, characterizes ripple mill and causes and vibrates and cause obvious impact；
If 1.1>Li/ALi>0.9 and 1.1>Li/GLi>0.9, then it is Qi=2 that ripple mill, which endangers intensity, characterizes ripple mill and not only causes
Vibration, and cause thump；L in formulaiIt is L1、L2、…Li…LnFormula；Decision-making ripple mill length is Li=if Qi=2
(ALi+GLi)/2, otherwise, then decision-making ripple grinds length Li=Ali；Q=if (Q1+Q2+ ...+Qi+ ...+Qn)/n>1, the i.e. section
The ripple mill of more than half of n ripple mill endangers intensity and reaches 2, then sends ripple mill alarm.
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