CN104165716A - Monitoring system for wheel-rail forces of railway tracks - Google Patents
Monitoring system for wheel-rail forces of railway tracks Download PDFInfo
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- CN104165716A CN104165716A CN201410347233.9A CN201410347233A CN104165716A CN 104165716 A CN104165716 A CN 104165716A CN 201410347233 A CN201410347233 A CN 201410347233A CN 104165716 A CN104165716 A CN 104165716A
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- wheel
- strain rosette
- monitoring system
- strain
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Abstract
Disclosed is a monitoring system for wheel-rail forces of railway tracks. The monitoring system includes strain rosette acquisition devices, an NI9237 module, and a PC. The strain rosette acquisition devices are pasted on steel rails according to a shearing stress method, wherein the pasting positions are the rail web of a left rail, the rail flange of the left rail, the rail web of a right rail and the rail flange of the right rail. The strain rosette at each position is bridged through a flat cable and output ends of bridge circuits are connected to supporting bridge boxes which match the NI9237 module. Output ends of the bridge boxes are connected to four channels of the NI9237 module respectively through RJ-50 jacks. An output end of the NI9237 is connected with the PC through a USB interface. The monitoring system for the wheel-rail forces of the railway tracks is capable of monitoring the wheel-rail forces of each train which passes a test point and in a monitoring process, strain waves of the wheel-rail forces can be displayed in a real-time manner and peak values of wave peaks in the strain waves of the wheel-rail forces are extracted to obtain values of the wheel-rail forces through conversion of calibration coefficients.
Description
Technical field
The invention belongs to railway construction technical field, relate in particular to a kind of railroad track wheel rail force monitoring system.
Background technology
Stability during train operation and security are subject to the impact of several factors, comprise geologic condition, rolling stock, signal of communication, weather conditions, line condition etc.The parameter of assessment train operation stability and security mainly contains derailment coefficients and rate of wheel load reduction, and these two parameters are to be obtained by the calculating of wheel rail force.Therefore, wheel rail force being monitored is that assessment train operation is stablized and safe important measures.
At present, the mounting means of railroad track wheel rail force monitoring system is divided into two kinds, a kind of monitoring system is arranged on track checking car, wheel rail force when this monitoring system can only monitor track checking car operation, and the wheel rail force of other vehicles during through this section of circuit can not obtain; Another kind is that monitoring system is installed in orbit, although this monitoring system can monitor each train through the wheel rail force of measuring point, this observation process can not real-time reflecting when train operation.
Summary of the invention
Object of the present invention be just to provide a kind of can Real-Time Monitoring the railroad track wheel rail force monitoring system of every train wheel rail force during through measuring point.
Railroad track wheel rail force monitoring system of the present invention, comprise strain rosette harvester, NI 9237 modules, PC, strain rosette harvester sticks on rail by shear stress method, paste position is respectively the left rail web of the rail, the left rail flange of rail, the right rail web of the rail, the right rail flange of rail, and the strain that these four positions gather is corresponding left rail vertical force, left rail transverse force, right rail vertical force, right rail transverse force respectively; Strain rosette in each position is organized bridge by winding displacement, the output terminal on bridge road is connected on the bridge box supporting with NI 9237 modules, the output terminal of each bridge box is connected to respectively by RJ-50 socket in four passages of NI 9237 modules, and four passages gather respectively the wheel rail force strain of above four positions; The output terminal of NI 9237 is connected with PC by USB interface.
Strain rosette harvester is the strain of rail to be converted into the resistance of strain rosette, adopts strain rosette to measure by shear stress method the strain that rail is produced by wheel rail force; NI 9237 modules are a kind of modules that gather strain based on electric bridge, and this module can collect by electric bridge the resistance variations of strain rosette, thereby collects the strain of rail; PC completes the data acquisition of wheel rail force strain, data storage, Data Management Analysis, and shows.
When train process measuring point, to wheel rail force, strain formally gathers system, on the interface of the program that is presented at that the data that this process collects not only can be real-time, and can be kept in the middle of the data store path setting in advance; When train is completely after measuring point, gather and finish, system can be processed and analyze collected data.The raw data just having collected is being mingled with certain interference noise, mainly comprise baseline wander and broadband noise, data processing function can be eliminated above noise, obtain desirable valid data, thereby extract the peak value of wheel rail force strain waveform medium wave peak, analytic function converts wheel rail force strain value to by calibration coefficient the value of wheel rail force, and by the mutual calculating between wheel rail force, can access the value of derailment coefficients and rate of wheel load reduction.
Railroad track wheel rail force monitoring system of the present invention, wheel rail force in the time of can monitoring every train through measuring point, in observation process, wheel rail force strain waveform can be real-time show, and extract the peak value of wheel rail force strain waveform medium wave peak, by the conversion of calibration coefficient, obtain the value of wheel rail force.
Accompanying drawing explanation
Fig. 1 is that schematic diagram is arranged in connection of the present invention;
Fig. 2 is wheel track vertical force strain rosette paster and group bridge mode schematic diagram;
Fig. 3 is wheel-rail lateral force strain rosette paster and group bridge mode schematic diagram.
Embodiment
A kind of railroad track wheel rail force monitoring system, comprise strain rosette harvester, NI 9237 modules, PC, strain rosette harvester sticks on rail by shear stress method, paste position is respectively the left rail web of the rail, the left rail flange of rail, the right rail web of the rail, the right rail flange of rail, and the strain that these four positions gather is corresponding left rail vertical force, left rail transverse force, right rail vertical force, right rail transverse force respectively; Strain rosette in each position is organized bridge by winding displacement, the output terminal on bridge road is connected on the bridge box supporting with NI 9237 modules, the output terminal of each bridge box is connected to respectively by RJ-50 socket in four passages of NI 9237 modules, and four passages gather respectively the wheel rail force strain of above four positions; The output terminal of NI 9237 is connected with PC by USB interface.
Test wheel track vertical force strain rosette paster and group bridge mode are as shown in Figure 2, strain rosette 1,2,3,4,1', 2', 3', the 4' of test vertical force P is attached to respectively on two sections of pillow box center line 110mm, patch location on the natural axis of web of the rail both sides, the longitudinal angle at 45 ° of the direction of foil gauge and rail in strain rosette.
Test wheel-rail lateral force strain rosette paster and group bridge mode as shown in Figure 3, are tested the strain rosette A of transverse force H
1, B
1, A
2, B
2, A
1', B
1', A
2', B
2' be attached to respectively from two sections resting the head on box center line 110mm apart from 20mm place, flange of rail edge the longitudinal angle at 45 ° of the direction of foil gauge and rail in strain rosette.
System connection arrangenent diagram in orbit as shown in Figure 1, at the web of the rail and the flange of rail of the left and right rail in monitoring point, carries out paster and group bridge by strain rosette paster and the group bridge mode of testing wheel track vertical force and transverse force in Fig. 2 and Fig. 3.Winding displacement is caused by track have certain distance apart from track, the situation thereby the scene that do not affect is open to traffic.Always have four strands of winding displacements, per share winding displacement has comprised each strain rosette paste position Qiao road output line, and these bridge road output lines are connected on the bridge box supporting with NI 9237 modules by the group bridge mode of shear stress method.
Claims (3)
1. a railroad track wheel rail force monitoring system, comprise strain rosette harvester, NI 9237 modules, PC, it is characterized in that: strain rosette harvester sticks on rail by shear stress method, paste position is respectively the left rail web of the rail, the left rail flange of rail, the right rail web of the rail, the right rail flange of rail, strain rosette in each position is organized bridge by winding displacement, the output terminal on bridge road is connected on the bridge box supporting with NI 9237 modules, the output terminal of each bridge box is connected to respectively in four passages of NI 9237 modules by RJ-50 socket, the output terminal of NI 9237 is connected with PC by USB interface.
2. railroad track wheel rail force monitoring system according to claim 1, it is characterized in that: the strain rosette of test vertical force is attached to respectively on two sections of pillow box center line 110mm, patch location on the natural axis of web of the rail both sides, the longitudinal angle at 45 ° of the direction of foil gauge and rail in strain rosette.
3. railroad track wheel rail force monitoring system according to claim 1, it is characterized in that: the strain rosette of test transverse force is attached to respectively from two sections resting the head on box center line 110mm apart from 20mm place, flange of rail edge, the longitudinal angle at 45 ° of the direction of foil gauge and rail in strain rosette.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347233.9A CN104165716A (en) | 2014-07-21 | 2014-07-21 | Monitoring system for wheel-rail forces of railway tracks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347233.9A CN104165716A (en) | 2014-07-21 | 2014-07-21 | Monitoring system for wheel-rail forces of railway tracks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104165716A true CN104165716A (en) | 2014-11-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410347233.9A Pending CN104165716A (en) | 2014-07-21 | 2014-07-21 | Monitoring system for wheel-rail forces of railway tracks |
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| CN (1) | CN104165716A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014528A (en) * | 2017-05-03 | 2017-08-04 | 上海工程技术大学 | A kind of wheel rail force on-line monitoring system, monitoring method and static demarcating method |
| CN107328496A (en) * | 2017-08-03 | 2017-11-07 | 华东交通大学 | A kind of method based on rail vertical motion Characteristics Detection rail longitudinal force |
| CN107532960A (en) * | 2015-04-28 | 2018-01-02 | 中国铁道科学研究院 | A kind of wheel track vertical force ground Total continuity measuring method and system |
| CN107560764A (en) * | 2017-08-03 | 2018-01-09 | 华东交通大学 | A kind of method based on rail lateral dynamic characteristics detection rail longitudinal force |
| CN109532939A (en) * | 2018-09-30 | 2019-03-29 | 中国铁路上海局集团有限公司科学技术研究所 | One kind being used for hump yard rolling performance testing detection method |
| CN110702278A (en) * | 2019-09-16 | 2020-01-17 | 同济大学 | Wheel rail stress measurement wire connector and measuring device |
| CN111964927A (en) * | 2020-08-27 | 2020-11-20 | 中南大学 | Wheel-rail force trackside monitoring method and system |
| CN114878055A (en) * | 2022-05-30 | 2022-08-09 | 浙江大学 | Nondestructive train wheel rail force monitoring system |
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| GB2285865A (en) * | 1994-01-14 | 1995-07-26 | Westland Aerospace Ltd | Strain measurement system |
| GB2371114A (en) * | 2001-01-13 | 2002-07-17 | Roger West | Plug type strain sensor for a railway rail |
| CN102116691A (en) * | 2009-12-31 | 2011-07-06 | 中国铁道科学研究院机车车辆研究所 | Continuous measurement method and device for force measuring wheel set |
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2014
- 2014-07-21 CN CN201410347233.9A patent/CN104165716A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2285865A (en) * | 1994-01-14 | 1995-07-26 | Westland Aerospace Ltd | Strain measurement system |
| GB2371114A (en) * | 2001-01-13 | 2002-07-17 | Roger West | Plug type strain sensor for a railway rail |
| CN102116691A (en) * | 2009-12-31 | 2011-07-06 | 中国铁道科学研究院机车车辆研究所 | Continuous measurement method and device for force measuring wheel set |
Non-Patent Citations (1)
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| 李奕璠等: "测力钢轨轮轨力连续输出算法", 《交通运输工程学报》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532960A (en) * | 2015-04-28 | 2018-01-02 | 中国铁道科学研究院 | A kind of wheel track vertical force ground Total continuity measuring method and system |
| CN107532960B (en) * | 2015-04-28 | 2019-06-18 | 中国铁道科学研究院 | A kind of wheel track vertical force ground Total continuity measurement method and system |
| CN107014528A (en) * | 2017-05-03 | 2017-08-04 | 上海工程技术大学 | A kind of wheel rail force on-line monitoring system, monitoring method and static demarcating method |
| CN107328496A (en) * | 2017-08-03 | 2017-11-07 | 华东交通大学 | A kind of method based on rail vertical motion Characteristics Detection rail longitudinal force |
| CN107560764A (en) * | 2017-08-03 | 2018-01-09 | 华东交通大学 | A kind of method based on rail lateral dynamic characteristics detection rail longitudinal force |
| CN109532939A (en) * | 2018-09-30 | 2019-03-29 | 中国铁路上海局集团有限公司科学技术研究所 | One kind being used for hump yard rolling performance testing detection method |
| CN109532939B (en) * | 2018-09-30 | 2020-04-28 | 中国铁路上海局集团有限公司科学技术研究所 | Test detection method for railway humping operation |
| CN110702278A (en) * | 2019-09-16 | 2020-01-17 | 同济大学 | Wheel rail stress measurement wire connector and measuring device |
| CN111964927A (en) * | 2020-08-27 | 2020-11-20 | 中南大学 | Wheel-rail force trackside monitoring method and system |
| CN111964927B (en) * | 2020-08-27 | 2022-02-15 | 中南大学 | Wheel-rail force trackside monitoring method and system |
| CN114878055A (en) * | 2022-05-30 | 2022-08-09 | 浙江大学 | Nondestructive train wheel rail force monitoring system |
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Application publication date: 20141126 |