CN115397713A - Device for increasing the coefficient of adhesion in rail vehicles - Google Patents
Device for increasing the coefficient of adhesion in rail vehicles Download PDFInfo
- Publication number
- CN115397713A CN115397713A CN202180028063.6A CN202180028063A CN115397713A CN 115397713 A CN115397713 A CN 115397713A CN 202180028063 A CN202180028063 A CN 202180028063A CN 115397713 A CN115397713 A CN 115397713A
- Authority
- CN
- China
- Prior art keywords
- wheel
- cleaning
- rail
- rolling surface
- adhesion
- 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
- 238000004140 cleaning Methods 0.000 claims abstract description 43
- 238000005096 rolling process Methods 0.000 claims abstract description 28
- 238000001035 drying Methods 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 13
- 239000012530 fluid Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/12—Brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention relates to a device for increasing the coefficient of adhesion in rail vehicles. The apparatus has a rail vehicle wheel, a cleaning device, and a rail on which the rail vehicle travels. The wheels of the rail vehicle are coupled to the cleaning device such that the cleaning device acts on the wheels when required. The cleaning device is arranged and designed to at least reduce moisture adhering to the wheel rolling surface before the wheel rolling surface contacts the rail, thereby increasing the coefficient of adhesion in the region of contact of the wheel rolling surface with the rail.
Description
The invention relates to a device for increasing the coefficient of adhesion between a wheel of a rail vehicle and a rail on which the rail vehicle is running.
The coefficient of adhesion is understood to be the ratio between the tangential and normal forces that can be transmitted.
In a rail vehicle, a tangential force is understood to be a driving force which can be transmitted and which acts on the outer circumference of the rail vehicle wheel and drives or brakes the rail vehicle wheel in the longitudinal direction of the rail vehicle.
In a rail vehicle, the normal force is the force with which the wheels of the rail vehicle press against the rail on which the rail vehicle is running. The normal force is generated by the weight of the rail vehicle.
The coefficient of adhesion is important for the tractive or braking forces of the rail vehicle.
It is known to take measures on the rails in order to improve the tractive or braking forces of rail vehicles, which are also referred to as rail treatment.
It is known from WO 2019 219223A1 to determine, by means of a measuring unit, a lateral offset of a rail on which the rail vehicle travels relative to the region of action of the rail processing unit. The track treatment unit is used to apply an auxiliary medium (sand, water, air) to the running rails, thereby increasing the coefficient of adhesion between the rails and the wheels of the rail vehicle. As a result of these measures, the sliding between the wheels and the rail or rail is reduced and the braking and traction forces that can be transmitted are increased.
The object of the present invention is to provide a device by means of which the tractive or braking forces of a rail vehicle can be further improved.
This object is achieved by the features of claim 1. Advantageous refinements are specified in the dependent claims.
The invention relates to a device for increasing the coefficient of adhesion in rail vehicles. The apparatus has a rail vehicle wheel, a cleaning device, and a rail on which the rail vehicle travels. The wheels of the rail vehicle are coupled with the cleaning device such that the cleaning device acts on the wheels when required. The cleaning device is arranged and designed to at least reduce moisture adhering to the wheel rolling surface before the wheel rolling surface contacts the rail. This increases the coefficient of adhesion in the contact area between the rolling surface of the wheel and the rail.
In an advantageous development, the cleaning device is arranged and designed to remove moisture adhering to the rolling surface of the wheel by drying.
In an advantageous development, the cleaning device is arranged and designed to reduce or remove dirt adhering to the rolling surfaces of the wheels.
In an advantageous development, the cleaning device has at least one compressed air outlet, through which compressed air is directed at the wheel or the wheel rolling surface.
In an advantageous development, the outlet is arranged at the level of the wheel axis.
In an advantageous development, the cleaning device is designed as a mechanical cleaning system which acts on the wheel running surface.
In an advantageous development, the mechanical cleaning system has a cleaning pad or a cleaning brush. The cleaning pad or brush is movably supported so as to be pressed against the wheel rolling surface, if necessary, by means of a coupling system.
The friction forces generated in this case result in heating of the wheel, which additionally dries the wheel.
In an advantageous development, the coupling system is designed as a pneumatic system.
In an advantageous development, the cleaning device is coupled to the rail treatment unit. The rail treatment unit applies an auxiliary medium, preferably sand or air, to the rails in order to additionally increase the adhesion coefficient.
In a preferred refinement, the compressed air is conducted through the heating device before being discharged through the compressed air outlet. The heating device is designed to heat the compressed air, so that the heated compressed air, which is discharged via the compressed air outlet, additionally dries the wheel rolling surface or the wheel.
In a preferred development, the heating device is arranged between the compressed-air generator and the compressed-air outlet, so that the compressed air reaches the heating device as a compressed-air stream.
In a preferred development, the heating device is arranged and designed in such a way that it surrounds the compressed air flow.
In a preferred development, the heating device is designed as a heatable pipe or copper pipe, through which a volumetric flow of compressed air is conducted for heating.
In a preferred refinement, the heating device is arranged and designed in such a way that it is surrounded by a volumetric flow of compressed air.
In a preferred refinement, the heating device is designed as a heating wire which is arranged in the compressed air volume flow in order to heat the latter.
In a preferred refinement, the heating device is designed as a heat exchanger which transfers the heat of the fluid into the compressed air volume flow.
In a preferred refinement, the fluid for heat input is transformer oil, which is used in a transformer cooling circuit of the rail vehicle for heat output of the transformer.
In a preferred refinement, the fluid for heat input is engine cooling water, which is used in an engine cooling circuit of the rail vehicle to output heat from the engine.
The invention achieves the drying or cleaning of wheels of rail vehicles.
In a preferred development, it is recognized that even when the rails are cleaned or dry, delays in the generation of tractive or braking forces can occur. This delay is caused by the wheels of the rail vehicle and the invention therefore proceeds.
If the rolling circle of the wheel changes when the wheel rolls on the rail, the invention also immediately starts to increase the traction or braking force.
When the rolling circle of the wheel is not dry or not dry enough as a whole, the present invention immediately starts to increase the traction or braking force.
The present invention immediately begins to increase traction or braking force when there is a surplus of lubricating fluid from the rim lubrication device on the wheel.
The invention achieves both an increase in tractive force and an improvement in braking effect in rail vehicles.
By means of the advantageous arrangement of the compressed air outlet, compressed air for drying or cleaning the wheels can be saved, while the cleaning or drying effect on the wheels is maintained or enhanced.
Due to the advantageous arrangement of the compressed air outlet, a special profile of the wheel with a conical rolling surface and rim is used in order to effectively remove water and dirt from the wheel.
By using the cleaning device in combination with the track treatment unit, the traction and braking force can be rapidly improved.
The invention is explained in detail below by way of example with the aid of the figures. In the drawings:
FIG. 1 shows a first embodiment of the invention, and
fig. 2 shows a second embodiment of the invention.
Fig. 1 shows a first embodiment of the invention in accordance with a running gear FW of a rail vehicle.
The running gear FW comprises a frame 1 to which wheel sets with wheels 3 are fixed.
The wheels 3 are in contact with the rails 2 in a partial region, i.e. in the contact region BU.
Two compressed air outlets 4 are directed at the wheel 3, through which compressed air DL passes onto the wheel rolling surface RLF.
These components realize the cleaning device.
The two compressed air outlets 4 are arranged opposite each other with respect to the wheel diameter or at the height of the wheel axis, so that they act on the wheel rolling surface RLF from both sides.
Moisture or dirt on the wheel 3 is removed or the wheel 3 and thus the contact range BU is dried on the wheel rolling surface RLF by means of the two compressed air outlets 4 in order to improve the traction or braking force.
Fig. 2 shows a second embodiment of the running gear FW according to the invention of a rail vehicle.
The running gear FW comprises a frame 1 to which wheel sets with wheels 3 are fixed.
The wheel 3 is in contact with the rail 2 in a partial region, i.e. the contact region BU.
The mechanical cleaning system 5 is pressed, for example by means of a pneumatic system 6, against the wheel rolling surface RLF when required, in order to dry the moisture of the wheel rolling surface or to clean the wheel rolling surface.
These components realize the cleaning device.
The mechanical cleaning system 5 comprises a cleaning pad or brush which is applied to the wheels 3 for cleaning or drying.
The friction forces generated in this case result in heating of the wheel 3, which additionally dries the wheel 3.
Claims (10)
1. An apparatus for improving the coefficient of adhesion in a rail vehicle,
the device has rail vehicle wheels, a cleaning device and a rail on which the rail vehicle runs,
-wherein the wheels of the rail vehicle are coupled with the cleaning device such that the cleaning device acts on the wheels when required,
-wherein the cleaning device is arranged and designed to at least reduce the adhesion of moisture on the wheel rolling surface before the wheel rolling surface contacts the rail,
-so as to increase the coefficient of adhesion in the contact area of the rolling surface of the wheel with the rail.
2. An apparatus according to claim 1, wherein the cleaning device is arranged and designed to remove moisture adhering to the rolling surface of the wheel by drying.
3. An apparatus according to claim 1 or 2, wherein the cleaning means is arranged and designed to reduce or remove dirt adhering to the rolling surfaces of the wheels.
4. Device according to one of the preceding claims, wherein the cleaning means have at least one compressed air outlet through which compressed air is directed against the wheel or the wheel rolling surface.
5. The apparatus of claim 4, wherein the compressed air outlet is disposed at the height of the wheel axis.
6. Device according to one of claims 1 to 3, wherein the cleaning means are designed as a mechanical cleaning system which acts on the wheel rolling surface.
7. The apparatus as set forth in claim 6, wherein,
-wherein the mechanical cleaning system has a cleaning pad or a cleaning brush,
-wherein the cleaning pad or brush is movably supported to be pressed against the wheel rolling surface by a coupling system, if necessary.
8. The apparatus of claim 7, wherein the cleaning pad or brush is disposed at the height of the wheel axis.
9. The device according to claim 7, wherein the coupling system is designed as a pneumatic system.
10. The apparatus according to one of the preceding claims,
-wherein the cleaning device is coupled with a track handling unit,
-wherein the track handling unit applies an auxiliary medium, preferably sand or air, onto the steel rails in order to additionally increase the adhesion coefficient.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020203183.5A DE102020203183A1 (en) | 2020-03-12 | 2020-03-12 | Arrangement for increasing the coefficient of adhesion in a rail vehicle |
| DE102020203183.5 | 2020-03-12 | ||
| PCT/EP2021/055242 WO2021180524A1 (en) | 2020-03-12 | 2021-03-03 | Arrangement for increasing the adhesion coefficient in a rail vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115397713A true CN115397713A (en) | 2022-11-25 |
Family
ID=74873702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180028063.6A Pending CN115397713A (en) | 2020-03-12 | 2021-03-03 | Device for increasing the coefficient of adhesion in rail vehicles |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4096982B1 (en) |
| CN (1) | CN115397713A (en) |
| DE (1) | DE102020203183A1 (en) |
| WO (1) | WO2021180524A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102021214556A1 (en) | 2021-12-16 | 2023-06-22 | Siemens Mobility GmbH | rail vehicle |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE6924556U (en) | 1969-06-18 | 1969-11-20 | Bergische Stahlindustrie | DEVICE FOR CLEANING BANDAGES OF RAIL VEHICLE WHEELS |
| DE7720982U1 (en) | 1977-07-05 | 1978-01-12 | Thyssen Industrie Ag, 4300 Essen | CLEANING DEVICE FOR THE RUNNING SURFACE OF A RAILWAY WHEEL |
| DE20319041U1 (en) | 2003-12-09 | 2004-04-15 | Dierl, Ludwig, Dipl.-Ing. | Train rail cleaning device, comprises press brush, press shoe, air jet nozzle and brush roll |
| DE102011110051A1 (en) | 2011-08-12 | 2013-02-14 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Pneumatic track cleaning device for rail vehicle, has cleaning section that is arranged in upstream of contact surface of rail to remove particles adhered to contact surface |
| CN107031668A (en) * | 2016-11-25 | 2017-08-11 | 青岛思锐科技有限公司 | Locomotive tread sweeping control device |
| PL3781451T3 (en) | 2018-05-17 | 2022-06-13 | Siemens Mobility GmbH | Track-conditioning unit with device for rail drying |
| WO2019219223A1 (en) | 2018-05-17 | 2019-11-21 | Siemens Mobility GmbH | Controllable track conditioning unit |
| CN109664914A (en) * | 2019-01-25 | 2019-04-23 | 吕振国 | A kind of system for restoring adhesion strength for disc braking freight locomotive |
-
2020
- 2020-03-12 DE DE102020203183.5A patent/DE102020203183A1/en not_active Ceased
-
2021
- 2021-03-03 EP EP21711771.2A patent/EP4096982B1/en active Active
- 2021-03-03 WO PCT/EP2021/055242 patent/WO2021180524A1/en active Search and Examination
- 2021-03-03 CN CN202180028063.6A patent/CN115397713A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102020203183A1 (en) | 2021-09-16 |
| EP4096982B1 (en) | 2024-02-28 |
| EP4096982A1 (en) | 2022-12-07 |
| WO2021180524A1 (en) | 2021-09-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |