EP4561886A1 - Sandstreuanlage für ein schienenfahrzeug - Google Patents
Sandstreuanlage für ein schienenfahrzeugInfo
- Publication number
- EP4561886A1 EP4561886A1 EP23777151.4A EP23777151A EP4561886A1 EP 4561886 A1 EP4561886 A1 EP 4561886A1 EP 23777151 A EP23777151 A EP 23777151A EP 4561886 A1 EP4561886 A1 EP 4561886A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sand
- storage container
- rail vehicle
- force measurement
- spreading system
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C15/00—Maintaining or augmenting the starting or braking power by auxiliary devices and measures; Preventing wheel slippage; Controlling distribution of tractive effort between driving wheels
- B61C15/08—Preventing wheel slippage
- B61C15/10—Preventing wheel slippage by depositing sand or like friction increasing materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
- B61C17/02—Bunkers; Tanks; Tenders; Water or fuel pick-up or scoop apparatus; Water or fuel supply fittings
Definitions
- the invention relates to a sand-spreading system for a rail vehicle.
- Sand-spreading systems are used to increase the friction of the wheels of a rail vehicle on the rails by sprinkling the rails with sand, e.g. when starting off heavy vehicles, in adverse weather conditions or on steep gradients, and to increase the braking effect.
- the movement of rail vehicles relies on the friction of the wheels on the rails. If this is not large enough, the wheels can slide on the rails, which prevents both acceleration and braking. This can be counteracted by sprinkling the rails with sand.
- the invention is based on the object of demonstrating an improved sand spreading system and a method for operating a sand spreading system.
- the invention also relates to a method, a corresponding device or a system for data processing, a corresponding computer program, a corresponding computer-readable, preferably non-volatile, storage medium, and a corresponding data carrier signal.
- Advantageous embodiments and further developments are the subject of subclaims.
- a storage container for sand to be applied to the rails.
- the storage container is connected to the rail vehicle via at least one bearing that enables force measurement.
- the connection between the storage container and the rail vehicle is preferably made on a car body, in particular on a railcar. This connection is not rigid; rather, at least one bearing is provided which enables a relative movement between the component of the rail vehicle via which the connection between the storage container and the rail vehicle is made and the storage container. In addition to this at least one bearing, further connections can exist.
- the at least one bearing enables force measurement. Since the sand within the storage container exerts a weight corresponding to its mass, a change in the mass of the sand results in a change in weight, which can be determined by means of the force measurement. This takes advantage of the fact that a change in mass leads to a relative movement between the storage container and the rail vehicle via the bearing.
- the force measurement is carried out using at least one strain sensor.
- a part of the bearing or a component connected to it can be stretched or compressed, which can be detected by the strain sensor and converted into a force.
- the storage container is connected to the rail vehicle via a rotation bearing and a linear bearing that enables force measurement.
- the arrangement of the rotation bearing and linear bearing can be different. It is important that a change in mass in the storage container leads to a movement in the linear bearing, which can be detected using the force measurement.
- a plurality of such linear bearings can be provided in addition to the rotation bearing.
- the storage container is connected to the rail vehicle via two linear bearings that enable force measurement. This is particularly advantageous if there is no rotation bearing.
- the arrangement of the two linear bearings is such that a change in mass in the storage container leads to a movement in the linear bearings, which can be detected with the force measurement.
- the change in the mass of the sand to be distributed in the storage container can be determined via the force measurement, e.g. B. It can be determined whether too much or too little sand is applied per sanding process. Depending on this result, appropriate measures can then be taken to correct the amount of sand applied.
- sand is spread from a storage container onto the rails as part of a sanding process while the vehicle is traveling.
- the change in the mass of the sand in the storage container due to the sanding process is determined via a force measurement at a bearing via which the storage container is connected to the rail vehicle.
- the device or system for data processing has an input for receiving measured values from a force measurement of a sand spreading system, as well as means for calculating a change in the mass of the sand in the storage container due to a sanding process, and a memory for storing the calculated change in mass.
- the computer program for a sand spreading system has means for receiving measured values of a force measurement, as well as means for calculating a change in the mass of the sand in the storage container due to a sanding process, and an output for outputting the calculated change in mass.
- This output can be sent to a memory and/or to a display or other type of message, e.g. for the train driver.
- the method according to the invention and/or one or more functions, features and/or steps of the method according to the invention can be computer-aided. It can be carried out or implemented, for example, by means of one or more computers, processors, application-specific integrated circuits (ASIC), digital signal processors (DSP) and/or so-called “field programmable gate arrays” (FPGA). It can also be carried out at least partially in a cloud and/or in an edge computing environment.
- One or more interacting computer programs are used for the computer-aided process. If several programs are used, they can be stored together on and executed by one computer, or on different computers in different locations. Since this is functionally equivalent, “the computer program” and “the computer” are formulated in the singular here.
- Figure 1 a section of a sand spreading system with spreading pipe in the area of the rail
- Figures 2A, 2B, 2C the attachment of a sand container of a sand spreading system with different configurations for force determination
- Figure 3 an evaluation system .
- Rail vehicles usually have a sand spreading system. This is used to blow sand from a storage container under the wheels using compressed air in order to increase the friction between the wheel and the rail, i.e. to improve the adhesion of the wheel-rail system.
- the aim of this procedure is to increase the friction between the wheel and the rail.
- the spreading of sand is mainly used for e.g. B. due to reduced friction coefficients due to wetness, or strong pulling or braking forces. The increased friction increases the traction ons or Braking effect is improved and wheels slipping can be prevented.
- Figure 1 shows a section of a sand spreading system.
- the spreading tube la is used to specifically spread the sand 1c onto the rail 1b.
- the sand to be spread is in a container, not shown in the figure, to which the spreading tube la is connected directly or via a hose.
- the sand spreading system can have a diagnostic option based on optics, which detects whether or not there is sand in the outlet area. For this purpose, light is guided to the sensor head le using an optical fiber.
- the arrangement of the sensor head le is such that, depending on whether or not sand is currently being spread from the spreading tube la, light is detected by a photo element in the sensor head le: if sand comes out of the spreading tube la, the sensor does not receive a light signal and vice versa.
- Sanding is triggered when the driver in the locomotive orders this by pressing a button.
- the proper functioning of the sand spreading system can be checked: it can be detected whether sand is coming out of the spreading pipe in accordance with the signal triggered by the driver.
- the measured signal can be compared with the corresponding requirement and an “OK” or “Not OK” status can be assigned.
- FIG. 1 The sand spreading system shown in Figure 1 is therefore modified to enable the mass reduction to be recorded for each individual sanding process.
- Figures 2A, 2B and 2C show three configurations as examples.
- the container B which contains the sand, is connected to a car body WK of the rail vehicle. This connection is used to attach the container B to the rail vehicle. Instead of the car body WK, another component of the vehicle can also be used.
- the connection is made via a pivot bearing DL and a bearing with force detection FL .
- the pivot bearing DL allows a rotational movement of the container B about an axis perpendicular to the image plane .
- the bearing FL enables a translation, namely a relative movement between the container B and the car body WK in the longitudinal direction, namely in the horizontal direction indicated by the double arrow .
- the bearing with force detection FL can be implemented with a strain sensor .
- This electrical component reacts to stretching or compressing deformations with a change in electrical resistance .
- strain sensors When strain sensors are used, forces and loads can be reliably measured via measured strains .
- a strain gauge can be glued to a component; however, screwable strain sensors are preferably used .
- the weight F of the sand in container B points downwards. As the amount of sand in container B decreases, the extensometer stretches in the horizontal direction indicated by the double arrow. The change in weight of container B, including the sand in it, can be calculated from the electrical signal from the extensometer.
- the decisive factor here is the geometric design of the container. In an embodiment like in Figure 2A with a trapezoidal cross-section, the ratio of L2/L1 is crucial for this.
- the structure of Figure 2B differs from that of Figure 2A in that the bearing with force determination FL enables a relative movement between the container B and the car body WK in the longitudinal direction, namely in the vertical direction indicated by the double arrow. As the amount of sand in container B decreases, the extensometer is compressed in the horizontal direction indicated by the double arrow. Otherwise, the comments on FIG. 2A apply accordingly.
- the structure of Figure 2C differs from those of Figures 2A and 2B in that no pivot bearing DL is provided. Rather, the container B is connected to the car body WK via two bearings with force determination FL. Both enable a relative movement between the container B and the car body WK in the longitudinal direction, in each case in the vertical direction indicated by the double arrow.
- the sand spreading system known from the state of the art is supplemented by sensors for measuring the force at the fastening points.
- a force measurement can be used to draw conclusions about the contents of the container.
- the sensors integrated into the fastening determine the change in the weight force and thus a change in the mass of the container, which is caused by the application of sand during a sanding process.
- the mass reduction corresponds to the amount of sand applied, so a quantitative statement can be made about the amount of sand applied per sanding process.
- a test sanding should be carried out before using the system described during operation.
- a standard sand spreading system should dispense approximately 650g of sand per sanding process within a sanding process lasting 30 seconds.
- the mass of container B reduced during the test sanding is determined using the arrangement described. From this, a percentage deviation from the nominal value of 650g can be calculated.
- test sandings can also be carried out in order to be able to create statistics on the deviations.
- strain gauges described here is the preferred method, as strain gauges are inexpensive and widely available products. Nevertheless, alternative sensors can be used, e.g. based on pressure measurements.
- Figure 3 shows schematically an evaluation system SYS. While the components explained in more detail below are simply present in the figure, it is also possible that these are present in multiple versions, e.g. B. as a distributed system. In this way, the functionality of the SYS evaluation system can be divided into several systems, possibly hierarchically linked to one another. This or these are preferably located in the locomotive.
- the evaluation system SYS comprises a computing unit or a processor PRO. This is connected to a memory MEM in which a computer program PROGRAM is stored.
- the memory MEM is preferably a non-volatile computer-readable data storage medium. Storage can be carried out in any way that is suitable for ensuring readability by a computing unit, such as magnetic storage, e.g. using a floppy disk, optical storage, e.g. using a CD, magneto-optical storage, ROM (Read Only Memory) storage, RAM (Random Access Memory) storage, EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), flash memory.
- the steps of the procedure explained above are carried out.
- measured values from the force measurement are received and the change in mass of the sand in the container is calculated from this.
- the mathematical relationships required for this, which result from the geometry of the container, are part of the PROGRAM program.
- a processor integrated in the strain sensor The processor PRO has an input and output unit IN/OUT connected, via which information can be exchanged between the SYS evaluation system and other components and/or a user.
- measured values can be received and results can be output.
- This interface can be designed in a suitable manner, e.g. B. via radio or cable, and communication can take place via appropriate standards.
- the SYS evaluation system can make a quantitative statement about the amount of sand applied based on the calculated mass reduction. This can be spent and used in different ways:
- the mass of the sand applied can be stated after each sanding process. This can, for example, be displayed to the driver and/or saved in a file and, if necessary, evaluated at a later point in time.
- the information obtained on the amount of sand spread can be used to adjust the sand spreading system. If, for example, it is determined that too much sand is being spread on average, the spreading system can be mechanically readjusted during maintenance. This adjustment can be made for fixed as well as variable amounts of sand per sanding process. With a variable amount of sand, for example, two different amounts of 400 grams or 650 grams per 30-second sanding process can be requested, or the required amount of sand can be determined depending on the speed of the rail vehicle.
- this measuring technology can also be used to determine the filling level of the container.
- the amount of sand in the container can be stored. By deducting the amount of sand discharged during each sanding process, a warning can be issued when a certain minimum filling level is reached. This means that viewing windows or similar measures that serve to roughly determine the amount of sand remaining can be dispensed with.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022210339.4A DE102022210339A1 (de) | 2022-09-29 | 2022-09-29 | Sandstreuanlage für ein Schienenfahrzeug |
| PCT/EP2023/075160 WO2024068279A1 (de) | 2022-09-29 | 2023-09-13 | Sandstreuanlage für ein schienenfahrzeug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4561886A1 true EP4561886A1 (de) | 2025-06-04 |
Family
ID=88204171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP23777151.4A Pending EP4561886A1 (de) | 2022-09-29 | 2023-09-13 | Sandstreuanlage für ein schienenfahrzeug |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4561886A1 (de) |
| DE (1) | DE102022210339A1 (de) |
| WO (1) | WO2024068279A1 (de) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2433684A (en) * | 1937-08-09 | 1947-12-30 | Damond Emile | Intermittent and automatic outflow of various materials |
| SU135900A1 (ru) * | 1960-03-16 | 1960-11-30 | И.И. Артемов | Песочница дл рудничных локомотивов |
| SU1418133A1 (ru) * | 1987-02-26 | 1988-08-23 | Ворошиловградский машиностроительный институт | Песочница локомотива |
| EP1048542A3 (de) * | 1999-04-30 | 2000-12-06 | Siemens Aktiengesellschaft | Verfahren und Vorrichtung zur Erhöhung der Normalkraft eines Schienenfahrzeugs |
| DE102017009127A1 (de) * | 2017-06-30 | 2019-01-03 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Schienenfahrzeug mit Sensoreinrichtung zur Messung von Reibungsbremskräften einer Reibungsbremseinrichtung |
| CN207670402U (zh) * | 2017-11-15 | 2018-07-31 | 山东科技大学 | 一种电机车撒砂装置 |
| CN209258124U (zh) * | 2018-09-27 | 2019-08-16 | 河南师范大学 | 一种机车沙箱 |
| CN211918648U (zh) * | 2020-04-14 | 2020-11-13 | 田海军 | 一种电气铁路电力机车安全运行装置 |
| CN112622943B (zh) * | 2020-12-15 | 2022-08-05 | 西南交通大学 | 一种列车撒沙系统及控制方法 |
-
2022
- 2022-09-29 DE DE102022210339.4A patent/DE102022210339A1/de not_active Withdrawn
-
2023
- 2023-09-13 WO PCT/EP2023/075160 patent/WO2024068279A1/de not_active Ceased
- 2023-09-13 EP EP23777151.4A patent/EP4561886A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2024068279A1 (de) | 2024-04-04 |
| DE102022210339A1 (de) | 2024-04-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2162326B1 (de) | Verfahren zur beurteilung der kompatibilität von bremsanlagen einer fahrzeugkombination und vorrichtung zur beurteilung der kompatibilität | |
| EP2812225B1 (de) | Verfahren zum erzeugen von handlungsempfehlungen für den führer eines schienenfahrzeugs oder steuersignalen für das schienenfahrzeug mittels eines fahrerassistenzsystems und fahrassistenzsystem | |
| EP3089895B1 (de) | Verfahren und steuergerät zum betrieb eines fahrzeugs, insbesondere eines schienenfahrzeugs. | |
| DE102020208908A1 (de) | System und Verfahren zum Erkennen von Bremsvibrationen in Fahrzeugen | |
| DE10146031A1 (de) | Verfahren zur Bestimmung des Reifenluftdrucks und der Radlast von Fahrzeugreifen | |
| DE102022127155A1 (de) | Verfahren zur Überwachung der Bremswirkung eines Fahrzeugs, Bremsensteuergerät, Bremssystem und Fahrzeug | |
| EP3119650B1 (de) | Druckluftbremsanordnung für ein schienenfahrzeug | |
| EP3310637A1 (de) | Prüfeinrichtung und verfahren zur überprüfung eines definierten profils von einem zugverband aus fahrzeugen, insbesondere schienenfahrzeugen | |
| WO2023041766A1 (de) | Verfahren zum erkennen einer beschädigung an einem transportsystem und steuereinrichtung dafür | |
| DE112004000892T5 (de) | Überschlagerkennung mit Hilfe von Reifendrucksensoren | |
| DE102010015571A1 (de) | System und Verfahren zur Ermittlung des Masseschwerpunktes bei Schienenfahrzeugen | |
| EP1800982B1 (de) | Verfahren zur Ermittlung der Güte der Abstimmung der Bremsanlagen eines Zugfahrzeugs und eines Anhängefahrzeugs | |
| EP4561886A1 (de) | Sandstreuanlage für ein schienenfahrzeug | |
| DE102020123221A1 (de) | Verfahren zum Ermitteln und Überwachen eines Beladungszustandes von Kraftfahrzeugen auf Verkehrswegen | |
| WO2024223211A1 (de) | Verfahren zum bestimmen einer bremsleistung für ein fahrzeug, insbesondere nutzfahrzeug, computerprogramm und/oder computerlesbares medium, steuergerät, und fahrzeug | |
| DE102008049174B4 (de) | Verfahren zur Ansteuerung des elektronischen Stabilitätsprogramms (ESP) von Fahrzeuganhängern | |
| DE102011087594A1 (de) | Verfahren zur Funktionsüberwachung von Rad-Schwingungsdämpfern | |
| EP3990322B1 (de) | Verfahren zur kalibrierung der orientierung eines in einem fahrzeug vorgesehenen beschleunigungssensors | |
| DE102023101693A1 (de) | Verfahren und system zur diagnose der entgleisung eines schienenfahrzeugs und zur diagnose des gleises | |
| DE102022200376A1 (de) | Verfahren zum Überwachen der äquivalenten Konizität eines Schienenfahrzeug-Schiene-Systems | |
| DE102015113357B4 (de) | Verfahren zur Analyse und/oder Überwachung von Brücken sowie ein entsprechendes System | |
| DE102023111076A1 (de) | Verfahren zum Bestimmen einer Bremsleistung für eine zur kabellosen Kommunikation eingerichteten Datenverarbeitungsvorrichtung eines Fahrzeugs, Fahrzeug, Verfahren für einen fahrzeugexternen Server, fahrzeugexterner Server | |
| DE102023125299A1 (de) | Verfahren zum Betreiben eines elektropneumatischen Bremssystems für ein Fahrzeug, insbesondere Nutzfahrzeug, Computerprogramm und/oder computerlesbares Medium, Steuergerät, und Fahrzeug | |
| DE102015017237B3 (de) | Verfahren zur Analyse und/oder Überwachung von Brücken sowie entsprechendes System | |
| DE102023111075A1 (de) | Verfahren zum Bestimmen einer Bremsgröße für ein Fahrzeug, insbesondere Nutzfahrzeug, Computerprogramm und/oder computerlesbares Medium, Steuergerät, und Fahrzeug |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| 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 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20250227 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS MOBILITY GMBH |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) |