EP1704525A1 - Procede pour evaluer l'ecart entre la situation a un instant donne d'un site et un etat "normal" pour les conditions de fonctionnement de pneumatiques de vehicules de genie civil operant sur ce site - Google Patents
Procede pour evaluer l'ecart entre la situation a un instant donne d'un site et un etat "normal" pour les conditions de fonctionnement de pneumatiques de vehicules de genie civil operant sur ce siteInfo
- Publication number
- EP1704525A1 EP1704525A1 EP05700774A EP05700774A EP1704525A1 EP 1704525 A1 EP1704525 A1 EP 1704525A1 EP 05700774 A EP05700774 A EP 05700774A EP 05700774 A EP05700774 A EP 05700774A EP 1704525 A1 EP1704525 A1 EP 1704525A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parameters
- deviation
- site
- area
- tires
- Prior art date
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 44
- 238000007596 consolidation process Methods 0.000 claims abstract description 5
- 239000004575 stone Substances 0.000 claims description 16
- 230000009467 reduction Effects 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000000576 coating method Methods 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 238000012876 topography Methods 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 2
- 230000006872 improvement Effects 0.000 description 23
- 238000011156 evaluation Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000002028 premature Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C19/00—Tyre parts or constructions not otherwise provided for
Definitions
- the present invention relates to the technical sector of tires, in particular tires of civil engineering vehicles and similar machines (field of intensive agriculture, vehicles operating in ports, and the like) and more broadly to all the sites where operate such heavy vehicles under stable conditions or at least stable conditions for a sufficient period of time (for example, on the same site, one can possibly have a period of stable conditions “of dry season” and other stable conditions “of season of rain ”and the like); more specifically, the invention relates to a method for evaluating the difference between the situation at a given instant in a site and a “normal” state as regards the operating conditions of such tires, over a time range corresponding to stable operating conditions.
- Civil engineering tires and other similar vehicles represent a considerable budget for operators of sites such as surface mines, construction, and similar operations.
- the cost of tires can represent up to 20% of operating costs.
- An order of magnitude for such large tires is of the order, depending on the vehicle and its size, from 8,000 (for a 33.00R51; 38 tonnes of nominal load capacity per tire) to € 25,000 (for a 59 / 80 R 63 with 100 tonnes capacity) for a tire.
- the tire budget can represent, depending on the size, from 5 to 10 or even 15 M € per year on the basis of vehicles equipped with six tires with a full restocking of the vehicle after one year.
- the tire manufacturer has a convergent interest, which is to seek to understand the cause of premature tire damage, so that its manufacturing is not questioned.
- the invention relates to a method for evaluating the difference between the situation at a given instant of a site and a "normal" state with regard to the operating conditions of heavy vehicle tires of the Civil Engineering type or the like on this site. , in which :
- the user determines n characteristic parameters of the operating conditions of the tires in said zone; • the user assigns to each parameter a deviation dimension (x;) and introduces this dimension into a device capable of automatically performing a consolidation I of the dimensions of the n parameters; and
- normal state of an area of a site is meant a state of the area in which the operating conditions of the tires comply with the conditions for which they were designed. The tires can then offer their users an expected service and lifespan.
- the parameters characteristic of the operation of the tires belong to the following group:
- the characteristic parameters of the topography of the circuits belong in particular to the following group:
- the parameters characteristic of the contact conditions between the tires and the tracks of the circuit belong in particular to the following group:
- the device can also perform an arithmetic mean of the deviation ratings weighted by weighting factors (f r ) given for each of the n parameters, so that: n ⁇ X ,
- the weighting factors (f,) can be between 0.1 and 3, and preferably between 0.5 and 2.
- Each parameter of an area can have a scale of values between 1 and m, preferably 1 corresponding to poor operating conditions and m to "normal" operating conditions of the tires.
- the device receives a deviation reduction rating ( ⁇ XJ ) between the conditions at a given instant and the normal operating conditions of the tires for the parameter in the zone; and • the device consolidates the deviation reduction ratings of the n parameters of the zone and generates PA, index of potential reduction in deviation of the zone and / or PAo o relative index of potential reduction in deviation of the zone , so that :
- This step identifies the areas and points where the impact on the deviation index will be greatest.
- the device also calculates:
- the device can also advantageously carry out an additional step of comparing the deviation indices and / or improvement potentials obtained with the indices and / or potentials obtained for the same area during a previous evaluation.
- the method according to the invention can advantageously include steps for generating the data obtained on a presentation medium.
- a presentation medium can be such as a computer screen, paper printing, transmission by any means to a remote site, or from this remote site.
- the remote site can in particular be a central or regional database where all the results of the sites subjected to the process are stored, including the recommendations for improvement made, and the real improvements observed, and all other information allowing an operator on site to search the database for the best parameters to consider, or to validate their choice of parameters.
- the data generated on the presentation medium can in particular be chosen from the following:
- the subject of the invention is also a device for implementing the method according to the invention, comprising:
- This device is preferably able to cooperate with a means of presenting the results.
- the invention also relates to a computer system comprising the above device.
- the invention also relates to software comprising code elements programmed for the implementation of the method according to the invention, when said software is loaded into a computer system and executed by the computer system.
- the invention also extends to software in the form of a product recorded on a medium readable by a computer system, comprising code elements programmed according to the method of the invention.
- FIG. 1 shows a schematic diagram of the steps of the method according to the invention
- FIG. 2 represents an example of a screen showing the index of deviation of an area, here the transport tracks, its potential for improvement, and the comparison with the values obtained during a previous evaluation.
- the example below represents a simulation of implementation of the method according to the invention on an open pit mining site. This implementation can easily be carried out using software installed on a portable computer.
- FIG. 1 presents a schematic diagram of the different stages of the method according to the invention.
- identification data such as:
- the user delimits and defines in the site one or more zones in which the characteristics of the site and in particular of the functioning of the tires are substantially homogeneous and stable. Usually the user chooses at least three zones: • a vehicle loading area;
- the user determines the objective parameters or criteria having an impact on the life of the tires, by the physical effects of these parameters or criteria on the tire itself (direct effect) or on the vehicle ( with indirect effect on the tire).
- the user can define the following deviation parameters: loading area topography
- each deviation parameter it is desirable, to facilitate its evaluation, to define a scale, for example from 1 to 5 (1, most abnormal situation for tires, 5, normal operating situation for tires), and to illustrate in a few sentences concrete situations more or less distant from normal conditions for tires.
- topography of the tracks • bulging of the surface of the track: too large a bulge generates significant radial forces with regard to the tires; • slope: it has also been shown that the slope has a significant effect on the service life of tires; driving under load and uphill on a slope at 10% can reduce the service life by 19%; a slope of 12% can lead to a reduction in service life of up to 36%; rolling under load and downhill on a slope of 8% can reduce the life of the tire by 39%; downhill, a slope of 10% can lead to a reduction in service life of 56%; • slope of the slopes of the tracks (superelevation): the inclination or superelevation can be significant when cornering or at U-turn points; the angle of inclination, the radius of the turn and the speed of the vehicle are
- the six deviation parameters selected for the loading area can be used. However, it is possible to add the following parameter if necessary: tire / track contact conditions * presence of dangerous protuberances: ferrous elements introduced into the concrete to reinforce it or sharp angles in concrete may exist in the crusher area.
- the device After evaluating the deviation factors for each of the parameters and entering this data into the device, the device calculates the deviation index I for each zone, the relative deviation index 1 % as well as the potential for PA improvement and / or PAo o .
- the system can also calculate the impact on the deviation index of the improvement potentials evaluated: I A - or I A% (relative potential deviation index after implementation of the envisaged improvement program).
- the software then presents a synthetic screen of all of these results as presented for example in FIG. 2.
- FIG. 2 gives an example of a synthetic zone report which can be obtained with the method according to the invention.
- the area concerned is a "runway" area.
- the identification data are arranged at the top of the sheet.
- a table brings together the zone deviation parameters with their chosen deviation factors.
- the variance factors are presented in the form of a value (scale from 1. to 5) accompanied by the corresponding explanatory sentence. The operator can also indicate his comments.
- the values obtained are 2 for the undulations parameter, 3 for the stones presence and slope parameters and 4 for the bulging, inclination, aggregates, 180 ° turn and water parameters.
- ⁇ XJ are values evaluated by taking into account the concrete possibilities of improving the parameter of deviation concerned, either by modifying the conditions of use of the vehicles, or maintenance of the tracks or even by modifying the types of tires used. For example, if the site is located in a humid tropical zone, there is very little chance of improving it with regard to the presence of water. On the other hand, a “presence of stones” parameter can be assigned a high potential improvement value if the stone spills in the working area of the vehicles are simply due to a lack of instructions or precautions that are easy and inexpensive to implement.
- a parameter such as "protrusions” can be assigned a value of ⁇ x; low or very low if the site does not have the means necessary for the development to be carried out, or very high, for example 2 or 3 or 4 if the site has a budget and that development is therefore possible.
- difference index I is also represented graphically with a range scale. This presentation is complementary because, as many precise values are compulsory for the calculation, it is generally not necessary to have a numerical value to visualize and synthesize the global value or "difference index" of the area.
- the screen includes a movable mark which is positioned as a function of the value obtained by the calculation here 3.4 which corresponds on the screen to "good” compared to a scale of 5, the value 3 , 4 corresponds approximately to 69%>.
- this step can be carried out in a successive mode, that is to say complete study of each zone, then passage to another zone, that is to say in masked mode that is to say study of each zone to each step.
- the objective of the invention is indeed not only to search for the causes of tire damage on a given site, but also to propose remedies. It is therefore important to have the "potential for improvement" of each area considered, in order to focus efforts (infrastructure efforts, rehabilitation, maintenance, etc.) on the area (s) with the most high potential, that is to say an improvement of which will lead to the greatest impact on the life of the tire, at equal cost.
- the process allows a dynamic correlation from one visit / measurement to another and / or in relation to the potential of the site.
- the stages of comparison with a previous measurement make it possible to visualize the improvements obtained by the implementation of such or such recommendation.
- these steps require periods that are as “stable” as possible, that is to say periods over which it is possible to carry out several measurements or evaluation, and calculations by the method of the invention, without the results being distorted by changes in conditions: the differences observed can then be attributed to the improvements made.
- the process makes it possible to improve the recommendation of tires by taking into account exogenous but essential factors of the site on which the vehicles operate.
- the invention also makes it possible, by the same type of database and calculation, to possibly recommend a change in the allocation of road maintenance vehicles such as graders. Recommendation of tires:
- the parameters used above, as well as the weighting factors are a function of the tire used on site (type, structure, rubber, geometry of the tread, etc.).
- the user therefore preferably integrates a database correlating each type of tire, rubber, etc. with each of the deviation parameters (for example, effect of increasing rubber hardness on the parameters, working pressure, and the like).
- a computer calculation then simply makes it possible to visualize the impact of the choice of a particular tire on the deviation index of an area, and on its potential.
- the invention makes it possible, by the same type of database and calculation, to possibly recommend a change of machine or vehicle. This will only be possible when the fleet is renewed.
- the invention leads to the following advantages: attribution of the real causes to premature degradation of a tire; recommendation to improve the site (or change the type of tire); by recurring measurements over time over a “stable” period, compare curves (for example month by month) such as: - evolution of the tire budget for the period; evolution of the area deviation index; evolution of the area's potential; possible change in climatic conditions (presence of rainwater or not, etc.); possibly unexpected events (accidental unloading, subsidence of a roadway, etc.); in order to make it possible to correlate all of this information and allow the site operator to define a diagnosis and to decide, in cooperation with site staff, the improvements to be made and their implementation schedule.
- the invention also covers all the embodiments and all the applications which will be directly accessible to those skilled in the art on reading the present application, their own knowledge, and possibly simple routine tests.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0400253A FR2865053B1 (fr) | 2004-01-12 | 2004-01-12 | Procede pour evaluer l'ecart entre la situation a un instant donne d'un site et un etat "normal" pour les conditions de fonctionnement de pneumatiques de vehicules de genie civil operant sur ce site. |
| PCT/EP2005/000129 WO2005066855A1 (fr) | 2004-01-12 | 2005-01-10 | Procede pour evaluer l’ecart entre la situation a un instant donne d’un site et un etat <<normal>> pour les conditions de fonctionnement de pneumatiques de vehicules de genie civil sur ce site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1704525A1 true EP1704525A1 (fr) | 2006-09-27 |
Family
ID=34684950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05700774A Withdrawn EP1704525A1 (fr) | 2004-01-12 | 2005-01-10 | Procede pour evaluer l'ecart entre la situation a un instant donne d'un site et un etat "normal" pour les conditions de fonctionnement de pneumatiques de vehicules de genie civil operant sur ce site |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7660679B2 (fr) |
| EP (1) | EP1704525A1 (fr) |
| AU (1) | AU2005204075B2 (fr) |
| CA (1) | CA2587108C (fr) |
| FR (1) | FR2865053B1 (fr) |
| WO (1) | WO2005066855A1 (fr) |
| ZA (1) | ZA200605464B (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414269B (zh) * | 2022-03-30 | 2022-06-17 | 江苏天鑫机械科技有限公司 | 一种推土机驾驶室抗沙测试台架 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19611364B4 (de) * | 1996-03-22 | 2005-10-20 | Daimler Chrysler Ag | Verfahren und Vorrichtung zur Fahrzeugreifenüberwachung |
| US5913917A (en) * | 1997-08-04 | 1999-06-22 | Trimble Navigation Limited | Fuel consumption estimation |
| JP3320653B2 (ja) * | 1998-05-08 | 2002-09-03 | 株式会社ブリヂストン | タイヤ摩耗寿命予測方法 |
| DE60024574T2 (de) * | 1999-12-20 | 2006-08-24 | Trw Automotive U.S. Llc, Livonia | Vorrichtung und Verfahren zur Überprüfung des Betriebszustandes eines Fahrzeugreifens |
| CN1321838C (zh) * | 2001-12-21 | 2007-06-20 | 株式会社普利司通 | 路面状况及轮胎行驶状态的推断方法和装置及利用它们的防滑刹车系统和车辆控制 |
| FR2837300B1 (fr) * | 2002-03-13 | 2004-05-28 | Michelin Soc Tech | Methode et systeme de preconisation de pneumatiques et de calcul sur site des pressions de gonflage desdits pneumatiques pour un vehicule de genie civil |
-
2004
- 2004-01-12 FR FR0400253A patent/FR2865053B1/fr not_active Expired - Fee Related
-
2005
- 2005-01-10 EP EP05700774A patent/EP1704525A1/fr not_active Withdrawn
- 2005-01-10 WO PCT/EP2005/000129 patent/WO2005066855A1/fr not_active Ceased
- 2005-01-10 AU AU2005204075A patent/AU2005204075B2/en not_active Ceased
- 2005-01-10 CA CA2587108A patent/CA2587108C/fr not_active Expired - Fee Related
-
2006
- 2006-07-03 ZA ZA2006/05464A patent/ZA200605464B/en unknown
- 2006-07-12 US US11/484,686 patent/US7660679B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005066855A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2005204075B2 (en) | 2009-11-19 |
| CA2587108A1 (fr) | 2005-07-21 |
| US20070150210A1 (en) | 2007-06-28 |
| AU2005204075A1 (en) | 2005-07-21 |
| WO2005066855A1 (fr) | 2005-07-21 |
| US7660679B2 (en) | 2010-02-09 |
| ZA200605464B (en) | 2007-12-27 |
| FR2865053B1 (fr) | 2006-06-16 |
| FR2865053A1 (fr) | 2005-07-15 |
| CA2587108C (fr) | 2013-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20250164256A1 (en) | Cloud-based dynamic vehicle sharing system and method | |
| CN105139475B (zh) | 用于产生车辆使用模型的设备和系统 | |
| EP3084418B1 (fr) | Méthode de détection acoustique de l'état de la route et du pneumatique | |
| EP3390965B1 (fr) | Procédé de représentation cartographique de données concernant l'état d'une route | |
| FR3122011A1 (fr) | Procédé de détermination de la quantité d’émissions polluantes émises par un véhicule sur un brin d’un réseau routier | |
| Heidari et al. | Pavement deterioration modeling for forest roads based on logistic regression and artificial neural networks | |
| WO2019016445A1 (fr) | Méthode de détection de l'état de la route et du pneumatique | |
| EP3297886A2 (fr) | Procédé de détermination d'une vitesse limite de roulage | |
| FR2902909A1 (fr) | Procede de determination de limites de roulage d'un vehicule | |
| EP3458325B1 (fr) | Procédé de proposition d'une vitesse de roulage | |
| Vavouranakis et al. | Smartphone-based telematics for usage based insurance | |
| EP3880498A1 (fr) | Procede de determination de la charge appliquee sur un pneumatique | |
| da Silva et al. | Development of global quality index of unpaved roads | |
| WO2005066855A1 (fr) | Procede pour evaluer l’ecart entre la situation a un instant donne d’un site et un etat <<normal>> pour les conditions de fonctionnement de pneumatiques de vehicules de genie civil sur ce site | |
| FR3009261A1 (fr) | Procede d'assistance d'aide a la conduite, procede de generation d'un indicateur de trajet, equipement d'aide a la conduite, systeme associe | |
| Walcott-Bryant et al. | Harsh brakes at potholes in Nairobi: Context-based driver behavior in developing cities | |
| WO2021214407A1 (fr) | Procede de determination d'au moins un itineraire entre au moins deux points en fonction d'un exposome personalise et application associee | |
| WO2021001631A1 (fr) | Procédé et dispositif d'évaluation d'une zone géographique | |
| FR3156968A1 (fr) | Procédé de détermination d’une quantité d’au moins un polluant émis par un ensemble de véhicules au sein d’un réseau routier | |
| SANTOS | Functional evaluation of pathologies in flexible pavement | |
| EP2562518B1 (fr) | Dispositif et procédé d'évaluation de la conduite d'un véhicule | |
| Sanjaya et al. | Study on Monthly Rainfall Trend Impact on Reservoir Simulation in Greater Bandung | |
| WO2024056319A1 (fr) | Procédé de détermination d'un rayon dynamique compensé d'une roue d'un véhicule, procédé d'estimation de la profondeur d'une bande de roulement d'un pneumatique et véhicule automobile pour mettre en œuvre lesdits procédés | |
| Tarnini et al. | Assessing Pavement Crash Susceptibility for Consideration in Pavement Management Decisions | |
| Wang et al. | Division of Engineering Research on Call Task# 3-Investigation on Pavement Friction Demand Categories and Highway Condition-Based Friction Demand SN Threshold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20060814 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FOURIE, FREDERIC Inventor name: HOVELL, CHADMICHELIN AUSTRALIA PTY, LTD |
|
| DAX | Request for extension of the european patent (deleted) | ||
| R17P | Request for examination filed (corrected) |
Effective date: 20060814 |
|
| 17Q | First examination report despatched |
Effective date: 20110117 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
| 18W | Application withdrawn |
Effective date: 20120228 |