CN1027360C - Damage detection of wheel tread for railway rolling stock - Google Patents
Damage detection of wheel tread for railway rolling stock Download PDFInfo
- Publication number
- CN1027360C CN1027360C CN 92108085 CN92108085A CN1027360C CN 1027360 C CN1027360 C CN 1027360C CN 92108085 CN92108085 CN 92108085 CN 92108085 A CN92108085 A CN 92108085A CN 1027360 C CN1027360 C CN 1027360C
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- China
- Prior art keywords
- wheel
- damage
- measuring point
- rolling stock
- measuring
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Abstract
The present invention discloses a measuring method for quantitatively detecting the wheel tread damage of railway vehicles. A distance between a front measuring point and a back measuring point composed of an acceleration sensor and an infrared photoelectric transmitting and receiving sensor is larger than the addition of locomotive length and a wheel perimeter. When a driving vehicle enters a metering area, a measuring system automatically identifies a type and searches relevant parameters; the depth of wheel tread damage is quantitatively calculated according to impact vibrating waves which are generated by the damage and are transmitted to the vibrating energy of the measuring points, and a time difference transmitted to the front measuring point and the back measuring point; moreover, damaged wheel pair numbers are judged. Consequently, the present invention realizes the automatic monitoring of the wheel tread damage.
Description
The present invention relates to the method for inspection of a kind of rolling stock wheel damage, be specially adapted to the quantitative detection of railway locomotive wheel tread damage.
Scratch that the wheel tread of railway locomotive, vehicle causes because of braking and the surfacial spalling that causes because of fatigue all can cause the damage of wheel tread.When lesion depths equaled 0.5mm, the impact between wheel and the rail was equivalent to the rail joint and impacts; When lesion depths during greater than 0.7mm, the impact load between the wheel track will increase considerably, and heavy damage locomotive and railway track directly jeopardize traffic safety and reduce rail service life.Quantitative detection to locomotive, wheel of vehicle tread damage is the important process of a railway machine department, and present domestic prior art still rests on the manual detection level, and accuracy of detection is not high, and is time-consuming, can not accomplish preventative processing to accident potential.The quantitative detecting device that documents WO88/01956 provided has adopted a plurality of measuring points, by being intersected, the high speed of each measuring point strain and temperature-sensitive signal gathers, and under the support of a plurality of microprocessors, could be to the damage wheel to quantitatively detecting, this device basic configuration complexity, signal conditioning is loaded down with trivial details.
The objective of the invention is to provide a kind of railway locomotive, wheel of vehicle tread damage are carried out quantitative new mode, when this method utilizes locomotive to move between the measurement zone that two measuring points are formed, the damage wheel is to producing vibration, by being intersected, the high speed of the vibration acceleration of two measuring points gathers, and utilize its average to describe its vibrational energy, quantitative Analysis goes out to damage concentration thus.
Compared with prior art, the present invention has signal conditioning and understands, disposes simply, and the advantage of energy accurate Calculation lesion depths.In addition, the present invention is under the support of microcomputer system, and it is right also can accurately to judge the damage wheel, and can discern different locomotive vehicles.
Accompanying drawing 1 is embodiment of the invention signal flow and system layout.
Accompanying drawing 2 is vibration acceleration voltage signal time history of the present invention and signal conditioning schematic diagram.
With reference to accompanying drawing 1, in an embodiment, measuring system has former and later two measuring points A, B, distance between the AB is greater than vehicle length L and wheel girth π D sum, piezoelectric acceleration transducer [1], [3] are housed respectively under the two measuring point rails, and be equipped with in the rail medial and lateral that exceed rail level that infrared electro is sent out, receiving apparatus [2], [4].Microcomputer Detecting System comprises charge amplifier [5], mould/number conversion interface [6], optic electric interface [7] and microcomputer [8].
After locomotive sails the test section into during measuring point A, microcomputer begins locomotive speed of a motor vehicle v(m/s by infrared, receiving apparatus [2], meter per second), the locomotive number of axle, wheelbase and bogie truck cartridge range detect, and with microcomputer in the locomotive data that stores compare, determine concrete type, and find corresponding wheel to counterpoise m(kg/ kilogram) and wheel diameter D(m, rice).Last is taken turns after sailing the test section into during measuring point A when locomotive, vibration acceleration sensor [1], [3] that microcomputer is ordered by A, B, the vibration acceleration of two measuring points is carried out high speed intersects and gather, try to achieve the average Vo(V of voltage signal in the collision time, volt) and arrive the time difference △ t of two measuring points.
Accompanying drawing 2 has provided the time history of two measuring point vibration accelerations, its vibrational energy is directly proportional with vibration acceleration voltage signal and area that time shaft encloses, the relation that is directly proportional with impact energy according to wheel tread lesion depths △ h, and through theoretical derivation, wheel tread lesion depths △ h and wheel are to counterpoise m(kg, kilogram), wheel diameter D(m, rice), locomotive momentary velocity v(m/s, meter per second) and the vibration voltage average Vo(V that is gathered, volt), and in consideration dimensional transformation coefficient of correction K(Ω is arranged
-1/2, ohm
-1/2) after satisfy following relational expression:
△h＝（D
3/m
2）[（KVo）
4/v
6].
With reference to accompanying drawing 1, suppose damage wheel to for right apart from back measuring point third round, i.e. i=3, vibration source is nearer from the back measuring point, measuring point B arrived back measuring point A hysteresis △ t, vibration source position x(t before the vibration filter arrived) meet following relational expression:
x（t）＝（L-v
s△t）/2
L(m in the formula, rice) be locomotive overall length, v
6(m/s, meter per second) is the propagation speed of vibration wave in rail.
As vibration source position x(t) cause with i number right instantaneous position Oi of wheel or near the time, wheel promptly is that the damage wheel is right to i.Wheel meets relational expression to the instantaneous position of i:
Oi（t）＝v
st+li+d
V in the formula
s(m/s, meter per second) is the propagation speed of vibration wave in rail, li(m, rice) be i number wheel to apart from the right distance of trailing wheel, d(m, rice) be trailing wheel to after the distance of measuring point.With x(t) and Oi(t) compare, can draw damage wheel check mark i, thereby finish the right judgement of damage wheel.
Claims (3)
1, rolling stock's wheel tread damage detecting method, when it is characterized in that rolling stock moves in the measurement zone that two measuring points are formed, measuring system carries out the collection of high speed intersection to the vibration acceleration voltage signal of forward and backward measuring point, according to the damage wheel vibrational energy that produces is tried to achieve its lesion depths △ h, the wheel of △ h (m) and rolling stock is to counterpoise m (kg), wheel diameter D (m), locomotive momentary velocity V (m/s) and the vibration voltage average Vo (V) that gathered, and in consideration dimensional transformation coefficient of correction K (Ω arranged
-1/2) after satisfy relational expression:
△h=(D
3/m
2)[(KVo)
4/v
6]。
2, by the described method of measurement of claim 1, its feature is in the judgement for damage wheel check mark i, is to determine vibration source position x(t according to mechanical wave propagates into forward and backward two measuring points in rail time difference △ t) meet relational expression:
x（t）＝（L-v
6△t）/2
In the formula, L(m) be locomotive overall length, v
6(m/s) be the propagation speed of mechanical wave in rail, △ t is the time difference that vibration wave arrives two measuring points, vibration source position x(t) and rotate right instantaneous position O i number
1(t) near the time, then can determine damage wheel check mark i, wheel is to instantaneous position O
1Character relational expression:
O
1（t）＝v
6t+li+d
In the formula, v
6(m/s) be the propagation speed of mechanical wave in rail, li(m) be i number wheel to taking turns right distance to the end, be trailing wheel to the back distance of measuring point d(m).
3, by claim 1 and 2 described method of measurement, it is characterized in that wheel is to counterpoise m(kg) and wheel diameter D(m) be the number of axle, wheelbase and bogie truck cartridge range measured when entering back measuring point according to rolling stock, the gained of in the stored rolling stock data sheet of Microcomputer Detecting System, tabling look-up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108085 CN1027360C (en) | 1992-04-06 | 1992-04-06 | Damage detection of wheel tread for railway rolling stock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92108085 CN1027360C (en) | 1992-04-06 | 1992-04-06 | Damage detection of wheel tread for railway rolling stock |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1065431A CN1065431A (en) | 1992-10-21 |
| CN1027360C true CN1027360C (en) | 1995-01-11 |
Family
ID=4943208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92108085 Expired - Fee Related CN1027360C (en) | 1992-04-06 | 1992-04-06 | Damage detection of wheel tread for railway rolling stock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1027360C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608799B (en) * | 2014-12-12 | 2017-03-29 | 郑州轻工业学院 | Based on information fusion technology Railway wheelset tread damage on-line checking and recognition methodss |
| CN106355895B (en) * | 2016-11-22 | 2023-04-21 | 四川农业大学 | Traffic flow and vehicle speed acquisition device and method based on infrared matrix |
| CN110261139A (en) * | 2019-06-12 | 2019-09-20 | 中国神华能源股份有限公司 | Wheel tread flat recognition methods and identification device |
| CN110316222B (en) * | 2019-08-09 | 2024-01-26 | 哈尔滨市科佳通用机电股份有限公司 | Locomotive running gear equipment detecting system |
| CN112406951B (en) * | 2020-12-02 | 2022-03-22 | 中车青岛四方机车车辆股份有限公司 | Rail vehicle, control method and control system for tread profile of rail vehicle |
| CN112816043B (en) * | 2020-12-30 | 2023-01-06 | 北京万集科技股份有限公司 | Method and system for determining vehicle type of vehicle |
| CN113252778B (en) * | 2021-04-12 | 2022-11-11 | 西南交通大学 | Acceleration-based elastic strip fatigue damage monitoring method |
-
1992
- 1992-04-06 CN CN 92108085 patent/CN1027360C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1065431A (en) | 1992-10-21 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |