EP2081812A1 - Device for removing of moisture from railway rails - Google Patents
Device for removing of moisture from railway railsInfo
- Publication number
- EP2081812A1 EP2081812A1 EP07835200A EP07835200A EP2081812A1 EP 2081812 A1 EP2081812 A1 EP 2081812A1 EP 07835200 A EP07835200 A EP 07835200A EP 07835200 A EP07835200 A EP 07835200A EP 2081812 A1 EP2081812 A1 EP 2081812A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- moisture
- rail
- wheel
- removing unit
- wiping blade
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F19/00—Wheel guards; Bumpers; Obstruction removers or the like
- B61F19/06—Nets, catchers, or the like for catching obstacles or removing them from the track
- B61F19/08—Nets, catchers, or the like for catching obstacles or removing them from the track of the drop-down type
-
- 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
Definitions
- the present invention relates to a device, which is adapted to prevent the forming of a wheel flat on vehicle wheels, which run on a rail.
- a wheel flat is formed on a vehicle wheel when, in braking, the wheel is locked and slides on the rail.
- a vehicle wheel with a wheel flat is out-of-round and must for renewed use be turned in a lathe once more, which takes time and is expensive.
- the object of the invention is to reduce the risk of a vehicle wheel, in braking, being locked and thus sliding on a rail, that is to prevent the forming of a wheel flat.
- a further object is to increase friction against the rail as the speed of rotation of the wheel is being changed.
- a device which comprises a moisture removing unit, which is arranged in front of the wheel, seen in the travelling direction of the vehicle, to remove, in an active position, moisture from the upper side of the rail.
- the device advantageously comprises a rain sensor unit, which is arranged, when sensing moisture, to move the moisture removing unit to its active position, either only when the wheel is being braked, or when it is being both braked and accelerated.
- the device is thus suitably only active when there is a risk of the wheels sliding during braking and/or spinning during acceleration.
- the moisture removing unit comprises a moisture wiping unit, which comprises a wiping blade, which is movable between a starting position, in which it is spaced from the rail, and a working position, which corresponds to the active position of the moisture removing unit and in which the wiping blade abuts against the upper side of the rail to wipe moisture from the same.
- the wiping blade is preferably vertically adjustable by means of a cylinder assembly.
- the wiping blade is preferably inclined downwards backwards, seen in the travelling direction of the vehicle, to minimise wear, and it suitably forms an angle different from 90° to the longitudinal direction of the rail.
- Fig. 1 is a side view and shows a device according to the invention, applied to a vehicle wheel and arranged in a passive position.
- Fig. 2 is a detail view of the device in Fig. 1.
- Fig. 3 is a side view and shows a device according to the invention in an active position.
- Fig. 1 shows part of a chassis 1 for a vehicle, such as a railway engine or railway carriage, which chassis is supported by a vehicle wheel 2, which runs on a rail 3.
- a moisture removing unit 4 is arranged in front of the wheel, seen in the travelling direction of the vehicle.
- the moisture removing unit 4 is in Figs 1 and 2 in a passive position and in Fig. 3 in an active position.
- the moisture removing unit 4 is a moisture wiping unit 4 which comprises a wiping blade 5, which by means of a suitable joint 6, such as a screw joint, is attached to a blade holder 7.
- the blade holder 7 is in turn attached to a plate 8, which via a piston rod is connected to a piston (not shown) of a pneumatic cylinder assembly 9.
- This cylinder assembly can, of course, also be hydraulic.
- the wiping blade 5 is vertically adjustable by means of the cylinder assembly 9 and can be moved from a starting position to a working position. In the starting position, which is shown in Figs 1 and 2, the wiping blade 5 is spaced from the rail 3. In the working position, which is shown in Fig. 3, the wiping blade 5 abuts against the upper side of the rails 3 to wipe moisture from the same. The working position corresponds to the active position of the moisture wiping unit.
- the wiping blade is a scraper of rubber, Teflon, silicone or some other material that has the strength and rigidity that are necessary for this application.
- the wiping blade extends obliquely downwards backwards relative to the travelling direction of the vehicle. Of course, it could also be directed forwards, but this would cause greater wear on the blade in the working position.
- the wiping blade is inclined relative to the longitudinal direction of the rail, that is it makes an angle, which is different from 90°, to the longitudinal direction of the rail.
- the moisture wiping unit 4 is to be moved to its active position when the wheel is being braked and the rail is moist.
- the moisture removing unit is automatically connectable by means of a rain sensor 10 (schematically shown), which senses rain or moisture and which via a control unit 11 controls the moisture wiping unit.
- the rain sensor 10 is arranged on the front of the vehicle.
- the rain sensor 10 has such a sensitivity as to sense moisture, such as dew, and is activated even if there is no rain but the rail is moist.
- the rain sensor 10 signals to the control unit 10, which then moves the moisture wiping unit 4 to its active position to remove moisture from the upper side of the rail.
- the cylinder assembly being actuated, via a pressure transducer 12, by the control unit 11 to move, by means of the piston and the piston rod, the wiping blade 5 from its starting position to its working position.
- the cylinder assembly may also be actuated manually. It is also possible for the moisture removing unit to be connected in series to the windscreen wiper of the engine in such a manner that the moisture removing unit is moved to the active position when the wheel is being braked and the windscreen wipers are working.
- the moisture removing unit is controlled in the same way as described above, but with the difference that the unit is moved to the active position as the wheel is being accelerated.
- the moisture removing unit can thus also be a device which blows air onto the rail in order to dry it.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Regulating Braking Force (AREA)
- Braking Arrangements (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0602422A SE0602422L (en) | 2006-11-15 | ||
PCT/SE2007/001000 WO2008060220A1 (en) | 2006-11-15 | 2007-11-14 | Device for removing of moisture from railway rails |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2081812A1 true EP2081812A1 (en) | 2009-07-29 |
EP2081812A4 EP2081812A4 (en) | 2012-08-01 |
EP2081812B1 EP2081812B1 (en) | 2016-01-27 |
Family
ID=39401937
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07835200.2A Not-in-force EP2081812B1 (en) | 2006-11-15 | 2007-11-14 | Device for removing of moisture from railway rails |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2081812B1 (en) |
WO (1) | WO2008060220A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102320312A (en) * | 2011-07-01 | 2012-01-18 | 长春轨道客车股份有限公司 | Bogie obstruction guard and flange lubrication integrated device |
CN103661476B (en) * | 2013-09-23 | 2017-01-25 | 中车青岛四方机车车辆股份有限公司 | High-speed railway vehicle barrier-removing device |
JP6397666B2 (en) * | 2014-06-27 | 2018-09-26 | 西日本旅客鉄道株式会社 | Device |
US9631332B2 (en) * | 2014-08-28 | 2017-04-25 | Electro-Motive Diesel, Inc. | Movable sand plow for locomotive |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1270327A (en) * | 1968-08-16 | 1972-04-12 | Knorr Bremse Gmbh | Anti-slip or anti-skid devices for rail vehicles, in combination with rail cleaners or rail brakes and switch means |
US3777858A (en) * | 1971-03-30 | 1973-12-11 | Girling Ltd | Railway vehicle braking systems |
GB2355702A (en) * | 1999-11-01 | 2001-05-02 | Laserthor Ltd | Rail cleaning method and apparatus |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1527541A (en) * | 1924-05-16 | 1925-02-24 | Robert J Dougherty | Safety device for railway motor cars |
US2042029A (en) * | 1932-10-19 | 1936-05-26 | Firestone Tire & Rubber Co | Rail wiper |
SE461229B (en) * | 1987-05-11 | 1990-01-22 | Maehler & Soener | PROCEDURE AND DEVICE FOR CLEANING RAELS |
-
2007
- 2007-11-14 WO PCT/SE2007/001000 patent/WO2008060220A1/en active Application Filing
- 2007-11-14 EP EP07835200.2A patent/EP2081812B1/en not_active Not-in-force
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1270327A (en) * | 1968-08-16 | 1972-04-12 | Knorr Bremse Gmbh | Anti-slip or anti-skid devices for rail vehicles, in combination with rail cleaners or rail brakes and switch means |
US3777858A (en) * | 1971-03-30 | 1973-12-11 | Girling Ltd | Railway vehicle braking systems |
GB2355702A (en) * | 1999-11-01 | 2001-05-02 | Laserthor Ltd | Rail cleaning method and apparatus |
Non-Patent Citations (1)
Title |
---|
See also references of WO2008060220A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2081812A4 (en) | 2012-08-01 |
EP2081812B1 (en) | 2016-01-27 |
WO2008060220A1 (en) | 2008-05-22 |
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