CN110450817A - The wheel footpath difference detection system and method for axle box vibration - Google Patents
The wheel footpath difference detection system and method for axle box vibration Download PDFInfo
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- CN110450817A CN110450817A CN201910861628.3A CN201910861628A CN110450817A CN 110450817 A CN110450817 A CN 110450817A CN 201910861628 A CN201910861628 A CN 201910861628A CN 110450817 A CN110450817 A CN 110450817A
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- 238000001514 detection method Methods 0.000 title claims abstract description 30
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- 230000001133 acceleration Effects 0.000 claims abstract description 47
- 238000004891 communication Methods 0.000 claims abstract description 4
- 230000035939 shock Effects 0.000 claims description 37
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- 230000003116 impacting effect Effects 0.000 description 4
- 239000000306 component Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- 230000007613 environmental effect Effects 0.000 description 2
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- 238000012423 maintenance Methods 0.000 description 2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/12—Measuring or surveying wheel-rims
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The present invention provides a kind of wheel footpath difference detection system and method based on axle box vibration, which includes acceleration transducer, signal picker and the wheel footpath difference arbiter of communication connection；Wherein: acceleration transducer is arranged on the axle box of rail vehicle, for acquiring the extensional vibration signal and oscillation crosswise signal of axle box, and extensional vibration signal and oscillation crosswise signal is sent to signal picker；Signal picker is used to extract the vibration performance of axle box, and the vibration performance of axle box is sent to wheel footpath difference arbiter according to extensional vibration signal and oscillation crosswise signal；Wheel footpath difference arbiter is used for the vibration performance according to axle box, differentiates the wheel footpath difference classification of the wheel pair on same bogie.System in the present invention, structure is simple, measures wheel footpath with can be convenient poor, and entire measuring system is affected by environment small, accuracy of measurement is high, is suitable for on-line testing.
Description
Technical field
The present invention relates to field of measuring technique, and in particular, to rail car axle box vibration wheel footpath difference detection system and
Method.
Background technique
With the fast development of China's rail traffic cause, the overall trip speed of vehicle is continuously improved, to the trip band of people
While to facilitate, huge challenge also is brought to the security maintenance of rail vehicle.Wherein, wheel is to as locomotive running gear
Core component, the state of Wheel Rail Contact will directly affect the dynamic performance of vehicle, so the motion state of wheel pair is steadily to protect
The primary condition of train operation safety is demonstrate,proved, and carries out the basic goal of periodic detection to diameter to wheel.
Since wheel diameter is larger, it is difficult to directly be measured with common apparatus, therefore wheel diameter is that the numerous parameters of wheel are surveyed
It is relatively the difficult parameter surveyed in amount.Currently, generally measuring wheel diameter using mechanical wheel footpath ruler both at home and abroad.Such as notification number
It is to pass through fixation for " a kind of wagon wheel diameter detection ruler " that the utility model patent of CN 208720953U is announced
Slide calliper rule wheel diameter measured.There are measuring instrument more heavinesses, measurement method complexity, error for this measurement method
The defects of larger, and measure wheel and need multiple people to operate when being relatively large in diameter, it is upper also inconvenient to use.And it is this kind of
Device can only be acquired data in maintenance workshop, can not obtain the diameter information of wheel in real time at runtime.
Therefore, in order to obtain the information of wheel in real time, how correlation scholar is at runtime to wheel both at home and abroad
Diameter carries out dynamic measurement and has carried out a large amount of research, and the dynamic of wheel diameter is measured, mostly uses surveyed based on optics at present
Amount technology carries out acquisition and the analytical calculation of data using laser displacement sensor.Relevant advertisements number such as CN103693073A,
CN105835901A, CN105946898A, CN104482870A etc..The patent of invention that wherein notification number is CN103693073A is public
" a kind of noncontact wheel diameter dynamic measurement device and its measurement method " of cloth, using the laser position for being mounted on rail side
Displacement sensor and eddy current sensor carry out the acquisition of wheel information.The device needs laser displacement sensor to be accurately radiated at wheel
On tyre tread rolling circle, so, it to propose higher want to in-site installation in the installation in correct position of strict guarantee sensor
It asks." the train wheel diameter detection method " that the patent of invention that notification number is CN107415985A is announced, using several imaging moulds
Block (including industrial camera, multi-thread laser and wheel alignment sensor) to carry out information collection to wheel.Although reducing peace
Reload request does not need to be accurately positioned wheel, also improves precision.But required number of sensors is more, economy is poor.
Though and the mode of laser and image measurement may be implemented lower accuracy dynamic detection wheel footpath it is poor, the speed of vehicle
Degree is not above 30km/h, it is difficult to which real-time detection wheel footpath is poor during vehicle high-speed operation.The above measuring technique is deposited
The problems such as precision is low, rate of false alarm is high, measurement environmental requirement is high.
Summary of the invention
For the defects in the prior art, the object of the present invention is to provide a kind of axle box vibration wheel footpath difference detection system and
Method.
In a first aspect, the present invention provides a kind of wheel footpath difference detection system based on axle box vibration, comprising: communication connection adds
Velocity sensor, signal picker and wheel footpath difference arbiter；Wherein:
The acceleration transducer is arranged on the axle box of rail vehicle, for acquiring the extensional vibration signal and cross of axle box
The signal picker is sent to vibration signal, and by the extensional vibration signal and oscillation crosswise signal；
The signal picker is used to extract the vibration of axle box according to the extensional vibration signal and oscillation crosswise signal
Feature, and the vibration performance of the axle box is sent to the wheel footpath difference arbiter；
The wheel footpath difference arbiter is used for the vibration performance according to the axle box, differentiates the wheel of the wheel pair on same bogie
Diameter difference classification.
Optionally, the extensional vibration signal includes longitudinal vibration of the extensional vibration acceleration of left side axle box, right side axle box
Dynamic acceleration；The oscillation crosswise signal includes the lateral vibration acceleration of either side axle box.
Optionally, the vibration performance of the axle box includes: the extensional vibration shock characteristic of four axle boxes on same bogie
With oscillation crosswise shock characteristic；The extensional vibration shock characteristic includes impact amplitude and the impact frequency；The oscillation crosswise punching
Hitting feature includes impact amplitude, impact direction, the impact frequency.
Optionally, the wheel footpath difference classification of the wheel pair on same bogie includes: that wheel footpath in the same direction is poor, reversed wheel footpath is poor, single-wheel
It is poor to wheel footpath；Wherein:
Wheel footpath difference in the same direction refers to that same bogie front and back wheel is identical to wheel footpath difference direction；
Reversed wheel footpath difference refers to that same bogie front and back wheel is contrary to wheel footpath difference；
Single-wheel refers to that only front-wheel is poor to there is wheel footpath to wheel footpath difference, or only rear-wheel is poor to there is wheel footpath.
Optionally, the wheel footpath difference arbiter be used for the extensional vibration shock characteristic of four axle boxes on same bogie and
Oscillation crosswise shock characteristic is carried out with the extensional vibration shock characteristic and oscillation crosswise shock characteristic for corresponding to axle box under standard condition
It compares, obtains degree and the direction of the wheel footpath difference of wheel pair；And degree and the direction of the wheel footpath difference based on wheel pair, determine same steering
The wheel footpath difference classification of wheel pair on frame.
Second aspect, the present invention provides a kind of wheel footpath difference detection method based on axle box vibration, using in the first aspect
In described in any item wheel footpath difference detection systems based on axle box vibration, which comprises
Acquire the extensional vibration signal and oscillation crosswise signal of axle box；
According to the extensional vibration signal and oscillation crosswise signal, the vibration performance of axle box is extracted；
According to the vibration performance of the axle box, the wheel footpath difference classification of the wheel pair on same bogie is differentiated.
Optionally, the extensional vibration signal includes longitudinal vibration of the extensional vibration acceleration of left side axle box, right side axle box
Dynamic acceleration；The oscillation crosswise signal includes the lateral vibration acceleration of either side axle box.
Optionally, the vibration performance of the axle box includes: the extensional vibration shock characteristic of four axle boxes on same bogie
With oscillation crosswise shock characteristic；The extensional vibration shock characteristic includes impact amplitude and the impact frequency；The oscillation crosswise punching
Hitting feature includes impact amplitude, impact direction, the impact frequency.
Optionally, the wheel footpath difference classification of the wheel pair on same bogie includes: that wheel footpath in the same direction is poor, reversed wheel footpath is poor, single-wheel
It is poor to wheel footpath；Wherein:
Wheel footpath difference in the same direction refers to that same bogie front and back wheel is identical to wheel footpath difference direction；
Reversed wheel footpath difference refers to that same bogie front and back wheel is contrary to wheel footpath difference；
Single-wheel refers to that only front-wheel is poor to there is wheel footpath to wheel footpath difference, or only rear-wheel is poor to there is wheel footpath.
Optionally, according to the vibration performance of the axle box, differentiate the wheel footpath difference classification of the wheel pair on same bogie, packet
It includes:
By the extensional vibration shock characteristic and oscillation crosswise shock characteristic of four axle boxes on same bogie, with standard condition
The extensional vibration shock characteristic and oscillation crosswise shock characteristic of lower corresponding axle box are compared, and obtain the degree of the wheel footpath difference of wheel pair
The direction and；
The degree of wheel footpath difference based on wheel pair and direction determine the wheel footpath difference classification of the wheel pair on same bogie.
Compared with prior art, the present invention have it is following the utility model has the advantages that
The wheel footpath difference detection system and method for axle box vibration provided by the invention, overall structure is simple, surveys with can be convenient
It is poor to measure wheel footpath, and entire measuring system is affected by environment small, accuracy of measurement is high, is suitable for on-line testing.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is the mounting structure schematic diagram of acceleration transducer in the present invention；
Fig. 2 is overall wheel footpath difference logic diagram；
Fig. 3 is with bogie wheel footpath difference decision logic block diagram；
Fig. 4 is the logic diagram determined based on extensional vibration coaxial wheel footpath difference；
Fig. 5 is the logic diagram determined based on oscillation crosswise coaxial wheel footpath difference.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection scope.
The wheel footpath difference detection system of axle box vibration provided by the invention, acceleration transducer, signal including communication connection
Collector and wheel footpath difference arbiter；Wherein: acceleration transducer is arranged on the axle box of rail vehicle, for acquiring axle box
Extensional vibration signal and oscillation crosswise signal, and extensional vibration signal and oscillation crosswise signal are sent to signal picker；
Signal picker is used for according to extensional vibration signal and oscillation crosswise signal, extracts the vibration performance of axle box, and by axle box
Vibration performance is sent to wheel footpath difference arbiter；Wheel footpath difference arbiter is used for the vibration performance according to axle box, differentiates same bogie
On wheel pair wheel footpath difference classification.
It should be noted that needing to test the axle box vibration under different degrees of wheel footpath difference in the present invention, wheel is obtained
The vibration signal of diameter difference axle box under prescribed limits, in the reference standard determined wheel footpath difference degree.
Fig. 1 is the mounting structure schematic diagram of acceleration transducer in the present invention, as shown in Figure 1, on the axle box of bogie
Acceleration transducer is installed, acceleration transducer is installed including on four axle boxes.These acceleration transducers difference
The vertical and horizontal vibration acceleration of four axle boxes is measured, wherein the longitudinal direction that four axle box measurement longitudinal acceleration sensors measure
Vibration acceleration is denoted as L1, L2, L3, L4 respectively, the lateral vibration acceleration that lateral acceleration sensor measures be denoted as respectively H1,
H2。
Specifically, arrange that acceleration transducer acquires signal in rail car axle box.Acceleration transducer mainly to
Acquire the lateral vibration acceleration signal and extensional vibration acceleration signal of axle box.Wherein, extensional vibration acceleration needs to measure
The extensional vibration acceleration of left and right axle box, lateral vibration acceleration only need to measure the lateral vibration acceleration of unilateral axle box.Add
The collected signal of velocity sensor is transmitted to signal picker and carries out processing analysis, passes through the amplitude and the impact frequency to signal
Analysis, obtain the vibration performance of axle box.The vibration performance of axle box is mainly the extensional vibration of four axle boxes on same bogie
Impact and oscillation crosswise impact.Wherein impact of collision fixed reference feature includes the size and the frequency for impacting amplitude, and side knock
Fixed reference feature includes size, direction and the frequency for impacting amplitude.
It is possible to further be existed for vehicle using standard wheel with the vertical/horizontal impact of left and right axle box under standard wheel footpath operating condition
It is travelled in target line, the vertical/horizontal vibrational waveform of left and right axle box, using this vibrational waveform as the comparison basis of vibration performance.
Respectively to the extensional vibration impulse ratio of left and right axle box to left and right axle box impact of collision under, standard wheel footpath operating condition and practical measured punching
Hit impulse ratio pair measured by axle box side knock and reality under comparison, standard wheel footpath operating condition.The wheel of wheel pair on same bogie
Diameter difference classification includes: that wheel footpath in the same direction is poor, reversed wheel footpath is poor, single-wheel is poor to wheel footpath；Wherein:
Wheel footpath difference in the same direction refers to that same bogie front and back wheel is identical to wheel footpath difference direction；
Reversed wheel footpath difference refers to that same bogie front and back wheel is contrary to wheel footpath difference；
Single-wheel refers to that only front-wheel is poor to there is wheel footpath to wheel footpath difference, or only rear-wheel is poor to there is wheel footpath.
The present embodiment acquires the extensional vibration signal and oscillation crosswise signal of axle box by setting acceleration transducer, and
By signal picker according to the extensional vibration signal and oscillation crosswise signal, the vibration performance of axle box is extracted.Further,
The extensional vibration of coaxial left-right axle box is monitored by wheel footpath difference arbiter, the shock characteristic of left and right axle box is compared, it is possible thereby to just
Step is diagnosed to be degree and the direction of coaxial wheel footpath difference；Then monitor single axle box oscillation crosswise impact, according to the amplitude of impact,
The frequency and direction judge degree and the direction of wheel footpath difference, then the wheel footpath difference of antero posterior axis is compared, and determine with bogie wheel footpath
The type of difference (front-wheel is poor to wheel footpath, rear-wheel is poor to wheel footpath, without taking turns, poor to wheel footpath, poor with phase wheel footpath, reverse phase wheel footpath is poor).
The present embodiment will can be used as the compensation process of existing wheel footpath difference measurements mode, be alternatively arranged as the one of wheel footpath difference detection
A early warning scheme.The present embodiment overall structure is simple, is protected from environmental smaller, can carry out to the wheel footpath difference of operation vehicle online
Monitoring.
The present invention also provides a kind of wheel footpath difference detection method based on axle box vibration, applies and vibrated above-mentioned based on axle box
Wheel footpath difference detection system in, method includes:
Step 1: acquiring the extensional vibration signal and oscillation crosswise signal of axle box.
In the present embodiment, extensional vibration signal includes longitudinal vibration of the extensional vibration acceleration of left side axle box, right side axle box
Dynamic acceleration；Oscillation crosswise signal includes the lateral vibration acceleration of either side axle box.
Step 2: according to extensional vibration signal and oscillation crosswise signal, extracting the vibration performance of axle box.
In the present embodiment, the vibration performance of axle box includes: the extensional vibration shock characteristic of four axle boxes on same bogie
With oscillation crosswise shock characteristic；Extensional vibration shock characteristic includes impact amplitude and the impact frequency；Oscillation crosswise shock characteristic packet
Include impact amplitude, impact direction, the impact frequency.
Step 3: according to the vibration performance of axle box, differentiating the wheel footpath difference classification of the wheel pair on same bogie.
In a kind of optional embodiment, can by the extensional vibration shock characteristic of four axle boxes on same bogie and
Oscillation crosswise shock characteristic is carried out with the extensional vibration shock characteristic and oscillation crosswise shock characteristic for corresponding to axle box under standard condition
It compares, obtains degree and the direction of the wheel footpath difference of wheel pair；The degree of wheel footpath difference based on wheel pair and direction, determine same bogie
On wheel pair wheel footpath difference classification.
Specifically, vibration performance concentration is the vibratory impulse feature on axle box, includes four axle boxes on same bogie
Extensional vibration impact and oscillation crosswise impact.Wherein impact of collision fixed reference feature includes the size and the frequency for impacting amplitude,
And side knock fixed reference feature includes size, direction and the frequency for impacting amplitude.It is same wheel pair side-to-side vibrations feature include
Three kinds of comparison structures: the extensional vibration impulse ratio of left and right axle box is to left and right axle box impact of collision and reality under, standard wheel footpath operating condition
Measured impulse ratio is to impulse ratio pair measured by axle box side knock under, standard wheel footpath operating condition and reality.
Further, wheel footpath difference classification obtains after being compared by the wheel footpath difference to front and back wheel pair, if same steering
Frame front and back wheel is identical to wheel footpath difference direction as poor with phase wheel footpath, on the contrary then poor for reversed wheel footpath, if (rear) wheel is to out before only
(rear) single-wheel is poor to wheel footpath before existing wheel footpath difference is.Left and right axle box impact of collision is that vehicle uses standard vehicle under standard wheel footpath operating condition
Wheel travels in target line, the extensional vibration waveform of left and right axle box, using this vibrational waveform as the reference standard of extensional vibration.
Axle box side knock is that vehicle is travelled in target line using standard wheel under standard wheel footpath operating condition, the transverse-vibration of unilateral axle box
Dynamic waveform, using this vibrational waveform as the reference standard of oscillation crosswise.The judgment basis of the wheel footpath difference of front and back wheel pair is front-wheel pair
Degree and direction with the wheel footpath difference of rear-wheel pair.
In addition, the extensional vibration acceleration of axle box needs to measure the extensional vibration acceleration of left and right axle box, sentence for comparing
The degree of other wheel footpath difference and direction.The lateral vibration acceleration of axle box only needs to measure the lateral vibration acceleration of unilateral axle box i.e.
It can.
In the present embodiment, on same bogie wheel pair wheel footpath difference classification include: wheel footpath in the same direction is poor, reversed wheel footpath is poor,
Single-wheel is poor to wheel footpath；Wherein: wheel footpath difference in the same direction refers to that same bogie front and back wheel is identical to wheel footpath difference direction；Reversely wheel footpath difference is
Refer to that same bogie front and back wheel is contrary to wheel footpath difference；Single-wheel refers to that only front-wheel is poor to there is wheel footpath to wheel footpath difference, or
Only rear-wheel is poor to there is wheel footpath.
Fig. 2 is overall wheel footpath difference logic diagram, as shown in Fig. 2, to the differentiation process of the wheel footpath difference of same bogie by preceding
The coaxial wheel footpath difference of rear-wheel pair starts, first the vibration signal on acquisition axle box, predominantly lateral vibration acceleration signal and vertical
To vibration acceleration signal.It is compared and analyzes by the extensional vibration impact signal to left and right axle box, its result is denoted as
Extensional vibration judging result；The oscillation crosswise impact signal of unilateral axle box is analyzed, its result is denoted as oscillation crosswise and is sentenced
Break as a result, obtaining degree and the direction of coaxial wheel footpath difference in conjunction with extensional vibration judging result and oscillation crosswise judging result.Will before
The wheel footpath difference of rear axle is compared, and screens to the wheel footpath difference type of same bogie, the wheel of diagnosable five similar bogies out
Diameter is poor.
Fig. 4 is the logic diagram determined based on extensional vibration coaxial wheel footpath difference, as shown in figure 4, passing through left and right axle box
Extensional vibration carries out coaxial wheel footpath difference to sentence method for distinguishing: extracting the vibration signal of left and right axle box, analyzes left-right signal
It compares, if it find that the frequency of vibratory impulse is greater than reference standard, then can assert that wheel footpath difference is greater than required standard；If left and right axle box
Impact amplitude differs larger with the impact frequency, and biggish side is the direction of big wheel footpath, thus can determine that the direction of wheel footpath difference；Again
It is secondary to compare left and right axle box impact of collision amplitude and the frequency with reference standard, size estimation can be carried out to coaxial wheel footpath difference.
Fig. 5 is the logic diagram determined based on oscillation crosswise coaxial wheel footpath difference, as shown in figure 5, passing through unilateral axle box
Oscillation crosswise carries out coaxial wheel footpath difference to sentence method for distinguishing: the vibration signal of unilateral axle box extracted, vibration signal is analyzed,
If it find that the frequency of vibratory impulse is greater than reference standard, then it can assert that wheel footpath difference is greater than required standard；If unilateral axle box impact
Amplitude and the impact frequency are larger, and impact direction is the lesser direction of wheel footpath, thus can determine that the direction of wheel footpath difference；Again by axis
Case side knock amplitude and the frequency are compared with reference standard, can carry out size estimation to coaxial wheel footpath difference.
Fig. 3 is with bogie wheel footpath difference decision logic block diagram, as shown in figure 3, obtaining front and back wheel to the degree of wheel footpath difference
Behind direction, the wheel footpath difference of front and back wheel pair is compared, if only front-wheel is larger to wheel footpath difference, the wheel footpath difference of the bogie can
It is set to that front-wheel is poor to wheel footpath, rotation is carried out according to coaxial wheel footpath difference of the front-wheel to appearance and repairs arrangement；If only rear-wheel is larger to wheel footpath difference,
Then the wheel footpath difference of the bogie can be set to that rear-wheel is poor to wheel footpath, carry out rotation according to coaxial wheel footpath difference of the rear-wheel to appearance and repair arrangement；
If front and back wheel is poor to there is wheel footpath, need for the wheel footpath difference of front and back wheel pair to be compared, is same if wheel footpath difference direction is identical
Phase wheel footpath is poor, it is reversed if wheel footpath difference on the contrary, if for reverse phase wheel footpath it is poor.
It should be noted that the step in the wheel footpath difference detection method of axle box vibration provided by the invention, can use axis
Corresponding module, device, unit etc. are achieved in the wheel footpath difference detection system of case vibration, and those skilled in the art are referred to
The step process of the technical solution implementation method of system, that is, the embodiment in system can be regarded as the preference of implementation method, In
It will not go into details for this.
One skilled in the art will appreciate that in addition to realizing system provided by the invention in a manner of pure computer readable program code
And its other than each device, completely can by by method and step carry out programming in logic come so that system provided by the invention and its
Each device is in the form of logic gate, switch, specific integrated circuit, programmable logic controller (PLC) and embedded microcontroller etc.
To realize identical function.So system provided by the invention and its every device are considered a kind of hardware component, and it is right
The device for realizing various functions for including in it can also be considered as the structure in hardware component；It can also will be for realizing each
The device of kind function is considered as either the software module of implementation method can be the structure in hardware component again.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or modify within the scope of the claims, this not shadow
Ring substantive content of the invention.In the absence of conflict, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (10)
1. a kind of wheel footpath difference detection system based on axle box vibration characterized by comprising the acceleration sensing of communication connection
Device, signal picker and wheel footpath difference arbiter；Wherein:
The acceleration transducer is arranged on the axle box of rail vehicle, for acquiring the extensional vibration signal and transverse-vibration of axle box
Dynamic signal, and the extensional vibration signal and oscillation crosswise signal are sent to the signal picker；
The vibration that the signal picker is used to extract axle box according to the extensional vibration signal and oscillation crosswise signal is special
Sign, and the vibration performance of the axle box is sent to the wheel footpath difference arbiter；
The wheel footpath difference arbiter is used for the vibration performance according to the axle box, differentiates that the wheel footpath of the wheel pair on same bogie is poor
Classification.
2. the wheel footpath difference detection system according to claim 1 based on axle box vibration, which is characterized in that the extensional vibration
Signal includes the extensional vibration acceleration of the extensional vibration acceleration of left side axle box, right side axle box；The oscillation crosswise signal packet
Include the lateral vibration acceleration of either side axle box.
3. the wheel footpath difference detection system according to claim 1 based on axle box vibration, which is characterized in that the vibration of the axle box
Dynamic feature includes: the extensional vibration shock characteristic and oscillation crosswise shock characteristic of four axle boxes on same bogie；The longitudinal direction
Vibratory impulse feature includes impact amplitude and the impact frequency；The oscillation crosswise shock characteristic include impact amplitude, impact direction,
Impact the frequency.
4. the wheel footpath difference detection system according to claim 1 based on axle box vibration, which is characterized in that on same bogie
Wheel pair wheel footpath difference classification include: that wheel footpath in the same direction is poor, reversed wheel footpath is poor, single-wheel is poor to wheel footpath；Wherein:
Wheel footpath difference in the same direction refers to that same bogie front and back wheel is identical to wheel footpath difference direction；
Reversed wheel footpath difference refers to that same bogie front and back wheel is contrary to wheel footpath difference；
Single-wheel refers to that only front-wheel is poor to there is wheel footpath to wheel footpath difference, or only rear-wheel is poor to there is wheel footpath.
5. the wheel footpath difference detection system based on axle box vibration described in any one of -4 according to claim 1, which is characterized in that institute
Wheel footpath difference arbiter is stated to be used for the extensional vibration shock characteristic and oscillation crosswise shock characteristic of four axle boxes on same bogie,
It is compared with the extensional vibration shock characteristic and oscillation crosswise shock characteristic for corresponding to axle box under standard condition, obtains the wheel of wheel pair
The degree of diameter difference and direction；And degree and the direction of the wheel footpath difference based on wheel pair, determine the wheel footpath of the wheel pair on same bogie
Poor classification.
6. a kind of wheel footpath difference detection method based on axle box vibration, which is characterized in that apply in any one of claim 1-5 institute
In the wheel footpath difference detection system based on axle box vibration stated, which comprises
Acquire the extensional vibration signal and oscillation crosswise signal of axle box；
According to the extensional vibration signal and oscillation crosswise signal, the vibration performance of axle box is extracted；
According to the vibration performance of the axle box, the wheel footpath difference classification of the wheel pair on same bogie is differentiated.
7. the wheel footpath difference detection method according to claim 6 based on axle box vibration, which is characterized in that the extensional vibration
Signal includes the extensional vibration acceleration of the extensional vibration acceleration of left side axle box, right side axle box；The oscillation crosswise signal packet
Include the lateral vibration acceleration of either side axle box.
8. the wheel footpath difference detection method according to claim 6 based on axle box vibration, which is characterized in that the vibration of the axle box
Dynamic feature includes: the extensional vibration shock characteristic and oscillation crosswise shock characteristic of four axle boxes on same bogie；The longitudinal direction
Vibratory impulse feature includes impact amplitude and the impact frequency；The oscillation crosswise shock characteristic include impact amplitude, impact direction,
Impact the frequency.
9. the wheel footpath difference detection method according to claim 6 based on axle box vibration, which is characterized in that on same bogie
Wheel pair wheel footpath difference classification include: that wheel footpath in the same direction is poor, reversed wheel footpath is poor, single-wheel is poor to wheel footpath；Wherein:
Wheel footpath difference in the same direction refers to that same bogie front and back wheel is identical to wheel footpath difference direction；
Reversed wheel footpath difference refers to that same bogie front and back wheel is contrary to wheel footpath difference；
Single-wheel refers to that only front-wheel is poor to there is wheel footpath to wheel footpath difference, or only rear-wheel is poor to there is wheel footpath.
10. the wheel footpath difference detection method based on axle box vibration according to any one of claim 6-9, which is characterized in that
According to the vibration performance of the axle box, the wheel footpath difference classification of the wheel pair on same bogie is differentiated, comprising:
It is and right under standard condition by the extensional vibration shock characteristic and oscillation crosswise shock characteristic of four axle boxes on same bogie
The extensional vibration shock characteristic and oscillation crosswise shock characteristic for answering axle box are compared, and obtain degree and the side of the wheel footpath difference of wheel pair
To；
The degree of wheel footpath difference based on wheel pair and direction determine the wheel footpath difference classification of the wheel pair on same bogie.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861628.3A CN110450817B (en) | 2019-09-11 | 2019-09-11 | Axle box vibration wheel diameter difference detection system and method |
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