EP2709894A1 - System zur dynamischen messung der radlast eines zuges - Google Patents

System zur dynamischen messung der radlast eines zuges

Info

Publication number: EP2709894A1
Authority: EP; European Patent Office
Prior art keywords: splint; rail; splice; train; force sensors
Prior art date: 2011-05-20
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP12722547.2A

Other languages

English (en)

French (fr)

Other versions

EP2709894B8 (de

EP2709894B1 (de

Inventor

Philippe POULIGNY

Emmanuel LAURANS

Jean-Michel PISSOT

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

SNCF Reseau

Original Assignee

SNCF Mobilites

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

2011-05-20

Filing date

2012-04-30

Publication date

2014-03-26

2012-04-30 Application filed by SNCF Mobilites filed Critical SNCF Mobilites

2014-03-26 Publication of EP2709894A1 publication Critical patent/EP2709894A1/de

2016-03-23 Application granted granted Critical

2016-03-23 Publication of EP2709894B1 publication Critical patent/EP2709894B1/de

2016-06-01 Publication of EP2709894B8 publication Critical patent/EP2709894B8/de

Status Active legal-status Critical Current

2032-04-30 Anticipated expiration legal-status Critical

Links

Classifications

- 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
- B61K9/08—Measuring installations for surveying permanent way

Definitions

the present patent application relates to a system for dynamically measuring the wheel load of a train.
This information can indeed be used for different purposes.
this information can be used to calculate the amounts of the tolls determined according to the tonnage transported, to classify the lines according to the actual tonnage circulated, to determine the aggressiveness of new rolling stock, to determine the cumulative tonnage. circulated after works, etc.
the present invention is thus particularly intended to provide means for dynamically measuring the load of the wheels of a train which are easy to implement on a rail by an unqualified operator, and which can be easily reused on several sites successively.
This object of the invention is achieved with a system for dynamically measuring the load of the wheels of a train, comprising at least one splint capable of being pressed against the web of a railway track, this hatch incorporating force sensors, and including reservations adapted to receive including the electrical wiring and connectivity associated with said sensors.
the splice equipped with its sensors forms a one-piece assembly in which the sensors are pre-positioned. one against the other, and this set can be very easily fixed against the soul of the rail by means of "cés” (sort of clamps commonly used for the maintenance of railways) pinching the soul of the rail of share and else, and passing under this rail.
this set can be easily removed from its location to be positioned elsewhere on the soul of another rail.
the force sensors used can be strain gauges glued on the outer surface of the eclipse, in the measure of shear, flexion or compression, but also any type of sensor that can be introduced into the splice by drilling, inserts equipped with gauges or piezoelectric sensors in particular.
said reservations comprise at least one housing in which there is a power supply of said force sensors: this makes it possible to make the system according to the invention very compact and autonomous in energy;
said reservations comprise at least one housing in which there is a device for wireless transmission of the signals sent by said force sensors: this contributes to the compactness and autonomy of the system according to the invention, and makes it possible to collect and to process the measured data at a location distant from the site where the fishplates are located;
said eclipse comprises two pairs of two bidirectional gauges
said splint is formed of a material selected from the group consisting of metal alloys and plastics.
FIG. 1 represents a pair of rails equipped with a measurement system according to the invention, as well as a train intended to run on this measurement system,
FIG. 2 shows, in perspective, a section of a railroad track with a measuring system according to the invention
FIG. 2a is a schematic view of a rail equipped with a fishplate according to the invention, in one embodiment where the force sensors are strain gages,
FIG. 2b is a plan view of a rail equipped with two fishplates according to the invention in accordance with the embodiment of FIG. 2a, these two fishplates being shown at a distance from the rail to facilitate understanding,
FIG. 2c is a detailed view of zone Z of FIG. 2b, illustrating one of the gauge bridges used in the splice according to the invention
FIG. 3 represents a side view and a perspective view of a railway track rail equipped with a measuring system according to the invention, the holding members of this system being visible,
FIG. 4 shows the measurements obtained with the system according to the invention during the passage of a train.
FIG. 1 there is shown diagrammatically railways 1a, 1b of a railroad track, interconnected by a series of sleepers 3.
the invention proposes to place at least one measurement splice 7a against the web of the rail 1a and a splice 7b against the web of the rail 1b, and preferably two pairs of measuring splints 7a, 7b and 7c, 7d on each of the respective rails 1a, 1b.
These measurement splints make it possible to measure the charges of each of the wheels 5a, 5b, 5i, as is symbolized by the dashed lines 9 of FIG.
the splice 7a is substantially in the form of a parallelepipedal block 1 3, the dimensions of which are adapted so that this splash can come to press against the core 1 1 of the rail 1 a.
the material chosen to form the parallelepiped block 13 may be selected from metal alloys and plastics.
This block is equipped with force sensors 15a, 15b, placed against the core 1 1 of the rail 1a.
the force sensors 15a, 15b are strain gauges, they are preferably placed on the outer surface of the parallelepiped block 1 3, so as to be in intimate contact with the core January 1 when the block 13 is in place as shown in Figure 2 and following.
the block 13 furthermore preferably comprises a housing 17, able to receive a power supply (battery or accumulator for example), connected by electric cables to the two sensors 15a and 15b.
a power supply battery or accumulator for example
the housing 17 is also adapted to receive an electronic wireless transmission unit of the signals sent by the sensors 15a, 15b, this block being also connected by electric cables to each of these two sensors.
the four gauges J1, J2 and J3, J4 forming the two pairs are mounted in a Wheatstone bridge, the power supply of this bridge and the measuring the voltage on this bridge being made at the points indicated in Figure 2c.
This variant embodiment which is in this case prototypical, is less preferred than that indicated in FIG. 2, in which the measurement edi 7a forms a compact and autonomous assembly, its power supply and the transmission of the signals sent by force sensors that do not require external wiring.
the operator can simply flatten the parallelepiped block 13 against the core 1 1 of the rail 1a, without worrying about any question of wiring, the power supply and transmission means information to a remote location of the site where the edict is located being integrated within this splint.
two respective fishplates 7a, 7b and 7c, 7d on either side of the core of each of these rails are placed on each rail 1a, 1b.
each splice 7a, 7b, 7c, 7d comprises two pairs of bidirectional strain gauges, making it possible to carry out shear measurements on the splice.
the abscissa axis indicates the time, and the ordinate axis indicates the amplitude of the deformations of the rail during the passage of the wheels 5a, 5b ... 5i of the train 7: each peak P1, P2, ... Pi indicates the passage of a wheel, the pairs of peaks P1, P2 ... being representative of the passage of axles grouped conventionally in pairs on the train 7.
the measurement system according to the invention is extremely simple to implement by an unqualified operator, compact and autonomous, so that it does not require any particular connection.
these measuring plates can be used an unlimited number of times, so that it is no longer necessary to implement new force sensors for each new measurement campaign, contrary to what was the case. in the prior art.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Force Measurement Appropriate To Specific Purposes (AREA)

EP12722547.2A 2011-05-20 2012-04-30 System zur dynamischen messung der radlast eines zuges Active EP2709894B8 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR1154405A FR2975359B1 (fr)	2011-05-20	2011-05-20	Systeme de mesure dynamique de la charge des roues d'un train
PCT/IB2012/052153 WO2012160461A1 (fr)	2011-05-20	2012-04-30	Systeme de mesure dynamique de la charge des roues d'un train

Publications (3)

Publication Number	Publication Date
EP2709894A1 true EP2709894A1 (de)	2014-03-26
EP2709894B1 EP2709894B1 (de)	2016-03-23
EP2709894B8 EP2709894B8 (de)	2016-06-01

Family

ID=46146996

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP12722547.2A Active EP2709894B8 (de)	2011-05-20	2012-04-30	System zur dynamischen messung der radlast eines zuges

Country Status (4)

Country	Link
EP (1)	EP2709894B8 (de)
ES (1)	ES2571540T3 (de)
FR (1)	FR2975359B1 (de)
WO (1)	WO2012160461A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN106289606A (zh) *	2015-05-20	2017-01-04	北京中科用通减振技术有限公司	扣件纵向阻力测试装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR3001237B1 (fr) *	2013-01-21	2016-03-11	Sncf	Dispositif de surveillance de la geometrie d'une voie ferree ; rail, traverse, voie ferree et systeme comprenant un tel dispositif.
CN109291954A (zh) *	2018-11-28	2019-02-01	华东交通大学	一种内嵌式智能铁轨及其制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2004068132A1 (de) *	2003-01-30	2004-08-12	Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.	Verfahren und vorrichtung zur ultraschalluntersuchung eines schienenstrangs hinsichtlich fehlstellen
ES2275219T3 (es) *	2003-05-07	2007-06-01	Armscor Business (Proprietary) Limited	Medio de sujecion para un transductor de rail.
GB2413390A (en) *	2004-02-26	2005-10-26	Balfour Beatty Plc	Thermally induced stress indication device
US20070214892A1 (en) *	2006-03-15	2007-09-20	Turner Joseph A	System and methods to determine and monitor changes in rail conditions over time

2011
- 2011-05-20 FR FR1154405A patent/FR2975359B1/fr not_active Expired - Fee Related
2012
- 2012-04-30 ES ES12722547T patent/ES2571540T3/es active Active
- 2012-04-30 EP EP12722547.2A patent/EP2709894B8/de active Active
- 2012-04-30 WO PCT/IB2012/052153 patent/WO2012160461A1/fr active Application Filing

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2012160461A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN106289606A (zh) *	2015-05-20	2017-01-04	北京中科用通减振技术有限公司	扣件纵向阻力测试装置
CN106289606B (zh) *	2015-05-20	2019-08-27	北京中科用通科技股份有限公司	扣件纵向阻力测试装置

Also Published As

Publication number	Publication date
EP2709894B8 (de)	2016-06-01
EP2709894B1 (de)	2016-03-23
FR2975359A1 (fr)	2012-11-23
ES2571540T3 (es)	2016-05-25
FR2975359B1 (fr)	2013-05-17
WO2012160461A1 (fr)	2012-11-29

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Publication	Publication Date	Title
EP2709894B1 (de)	2016-03-23	System zur dynamischen messung der radlast eines zuges
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