EP4237306A1 - Grit system for a rail vehicle - Google Patents
Grit system for a rail vehicleInfo
- Publication number
- EP4237306A1 EP4237306A1 EP21819040.3A EP21819040A EP4237306A1 EP 4237306 A1 EP4237306 A1 EP 4237306A1 EP 21819040 A EP21819040 A EP 21819040A EP 4237306 A1 EP4237306 A1 EP 4237306A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- grit
- conveyor
- chamber
- conveying
- feed device
- 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
- 230000007480 spreading Effects 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 25
- 238000007689 inspection Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000011161 development Methods 0.000 description 12
- 230000018109 developmental process Effects 0.000 description 12
- 239000003795 chemical substances by application Substances 0.000 description 11
- 230000032258 transport Effects 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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
- B61C15/107—Preventing wheel slippage by depositing sand or like friction increasing materials with electrically or electromagnetically controlled sanding equipment
-
- 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
- B61C15/102—Preventing wheel slippage by depositing sand or like friction increasing materials with sanding equipment of mechanical or fluid type, e.g. by means of steam
Definitions
- the invention relates to a grit system for a rail vehicle.
- Rail vehicles generally suffer when wet or if the rails are covered with leaves, this means that they have their full driving or Difficult to get traction performance on the rails or can implement .
- grit systems which contain a grit (e.g. quartz sand with a specified grain size) and bring this into a wheel-rail gap if necessary and, if necessary, with compressed air support in order to increase the traction power on the rail.
- a grit e.g. quartz sand with a specified grain size
- Grit systems that require small amounts of compressed air can be implemented with little effort, but only allow a quantity of grit to be discharged intermittently.
- the spreading agent is applied to the rail at specific points.
- More complex grit systems which combine mechanical dosing of the grit with compressed air delivery of the grit. Allow these a gradual or stepless and speed-dependent spreading agent discharge onto the rails, however, have the disadvantage of relatively high compressed air consumption.
- a further disadvantage of such systems is that the spreading agent is applied in a pulsed form.
- the disadvantage of this is that the traction performance is reduced to the rails.
- the invention relates to a grit system for a rail vehicle with a grit container, with a conveyor and with a feed device.
- the grit container contains a grit and is connected to the conveyor so that the grit gets from the grit container into the conveyor.
- the conveyor is connected to the feed device, so that the grit gets from the conveyor into the feed device.
- the feed device is designed in such a way that the grit can be introduced in a targeted manner into a wheel and/or into a rail area of the rail vehicle.
- the conveyor device includes a driven screw conveyor rotating about a longitudinal axis, with which the grit is transported from the grit container into a conveyor chamber reached .
- Compressed air can be introduced into the conveying chamber in order to transport the spreading agent from the conveying chamber into the feed device.
- the conveying device has an elongate worm chamber in which the conveying worm is arranged.
- the screw chamber and/or the screw conveyor is preferably aligned horizontally or inclined upwards or downwards from the horizontal plane in order to optimally transport the grit within the conveyor device.
- the auger is connected to an electric motor that rotates or rotates the auger. set in rotation.
- the electric motor for controlling the rotational speed can be controlled steplessly, this preferably being achieved by varying the operating voltage or the operating current of the electric motor takes place.
- a conveying quantity of the grit can be adjusted for a given grain size of the grit by changing the rotational speed.
- the conveying chamber is arranged between the conveying device and the feed device, is designed hollow and into which compressed air can be introduced.
- the spreading material which is conveyed from an inlet zone of the conveying device over the entire screw chamber into an outlet zone of the conveying device, preferably falls vertically into the conveying chamber. At the lowest point of the conveying chamber, the compressed air that is introduced acts on the spreading material Compressed air t-supported zt is transported into the feeder.
- the delivery chamber is connected to a compressed air nozzle in a lateral area.
- the compressed air is controlled in such a way
- the compressed air captures the spreading material falling into the conveying chamber and transports it to the feed device, or
- This compressed air control reduces or prevents clumping of the spreading agent in the feed device or eliminates blockages or blockages there.
- compressed air is preferably blown into the feed device at fixed time intervals.
- the conveyor screw is designed in such a way that the conveyor device can be used during cleaning or Drying closes the system mechanically at the top.
- a transition from the conveying chamber to the feed device is designed according to the Venturi principle, for example as a Venturi nozzle or as a Laval nozzle, in order to additionally accelerate the mixture of spreading material and compressed air.
- the screw chamber or the conveying device has an inspection opening for cleaning purposes at its lowest point.
- the inspection opening also enables a clean exchange of system components.
- the inspection opening enables the spreading agent to be removed in a targeted, clean manner, e.g. into a bucket that is placed under the inspection opening.
- system components can then be dismantled without having to carry out further complex protective measures on the surrounding components.
- the feed device is designed in such a way that the grit is introduced in a targeted manner into a wheel-rail gap of the rail vehicle.
- the grit container has a flange with a passage opening at its lowest point, which has a funnel-shaped flange with füröff fmbi the conveyor is connected. These are shaped in such a way that the spreading material is fed directly into the conveyor or entered the snail chamber.
- the grit system according to the invention enables the grit to be applied evenly and sparingly.
- the spreading material system according to the invention is operated with an extremely low consumption of compressed air, and the amount of air required is reduced to a functional minimum.
- a first functional principle which acts in a first section of the grit system and promoted in the grit via a mechanism or. is transported, and
- a second functional principle which acts in a second section of the grit system and in which the grit is transported via simply constructed components with Hil fe of compressed air and is ultimately applied to the rail.
- the spreading material system according to the invention reduces pollution of the environment with fine dust. This is achieved by an individual, speed-dependent conveyance of the spreading material, which is set via the rotation speed of the conveyor screw. This reduces the consumption of grit to the benefit of the environment and saves costs for the customer.
- FIG. 1 shows the arrangement according to the invention in an overview, and FIG. 2 to FIG. 4 with reference to FIG. 1 details of the arrangement according to the invention.
- FIG 1 shows the arrangement according to the invention in an overview.
- the grit system for a rail vehicle has a grit container 1 , a conveyor device 2 and a feed device 3 .
- the grit container 1 contains a grit SM and is connected to the conveyor 2 so that the grit SM passes from the grit container 1 into the conveyor 2 .
- connection between the grit container 1 and the conveying device 2 is provided at the lowest point of the grit container 1 .
- the conveyor device 2 is connected to the feed device 3 so that the spreading material SM passes from the conveyor device 2 into the feed device 3 .
- the feed device 3 is designed in such a way that the grit SM can be introduced in a targeted manner in an area of the wheel R and/or in an area of the rail SCH or in a wheel-rail gap RSCHS of the rail vehicle.
- FIG. 2 and FIG. 3 show details of the conveyor device 2 and the feed device 3.
- the conveyor device 2 contains a driven screw conveyor 2.5 rotating about a longitudinal axis, with which the grit SM is transported from the grit container 1 into the feed device 3.
- the conveyor device 2 has an elongate screw chamber 2.2 in which the screw conveyor 2.5 is arranged. Here screw chamber 2.2 and the screw conveyor 2.5 are aligned horizontally.
- the auger 2.5 is connected to an electric motor 2.1, which turns the auger 2.5 or causes it to rotate.
- the electric motor 2.1 can be controlled to control the rotational speed, so that a conveying quantity of the grit SM can be adjusted for a predetermined grain size of the grit SM by changing the rotational speed.
- the electric motor 2.1 rotates slower or faster by stepwise changes in an electrical voltage or current, so that the quantity of the spreading agent SM to be conveyed can be adjusted very precisely.
- the rotational speed of the screw conveyor 2.5 is therefore changed or adjusted depending on the grain size of the spreading material SM. This achieves a highly accurate flow rate.
- a hollow conveying chamber 2.4 is arranged between the conveying device 2 and the feed device 3, so that the spreading material SM, which is conveyed from an inlet zone EZ of the conveying device 2 via the entire screw chamber 2.2 into an outlet zone AZ of the conveying device 2, falls vertically into the conveying chamber 2.4 and there reaches a lowest point of the pumping chamber 2.4.
- a compressed air supply 2.3 is provided on the conveying chamber 2.4.
- This compressed air supply can be designed, for example, as a compressed air hose in order to supply compressed air to the conveying chamber 2.4 via a controllable compressed air nozzle 2.6.
- the spreading material container 1 has a flange with a through-opening, which is connected to a flange with a through-opening of the conveying device 2 . These together form a funnel, so that the spreading material SM reaches the conveying device 2 or the screw chamber 2.2 under the influence of gravity.
- the spreading agent SM can fall or reach the screw chamber 2.2 directly by gravity, i.e. without additional loosening elements, stirrers, etc.
- the screw conveyor 2.5 further supports this effect in that due to the (stirring) movement it performs in the lower ren interface area, a movement of the spreading agent SM is supported.
- the conveyor device 2 or the screw chamber 2.2 has an inspection opening WOE for cleaning purposes at its lowest point. This facilitates access to the entire system for cleaning purposes. Larger contaminants (e.g. cigarette butts, leaves, etc.) from the spreading agent SM can be easily removed via the inspection opening WOE without having to dismantle system components.
- the delivery chamber 2.4 is connected to a compressed air nozzle 2.6 in a lateral area. This is controlled in such a way
- That compressed air with an active conveying device 2 or with an active conveying screw 2.5 captures the spreading agent SM falling into the conveying chamber 2.4 and transports this compressed air with support into the feed device 3, or
- a transition from the pumping chamber 2 . 4 to the feed device 3 is preferably designed as a Venturi nozzle VT or as a Laval nozzle, as shown here.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Cleaning In General (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Screw Conveyors (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020215952.1A DE102020215952A1 (en) | 2020-12-15 | 2020-12-15 | Grit system for a rail vehicle |
PCT/EP2021/081976 WO2022128294A1 (en) | 2020-12-15 | 2021-11-17 | Grit system for a rail vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4237306A1 true EP4237306A1 (en) | 2023-09-06 |
Family
ID=78820432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21819040.3A Pending EP4237306A1 (en) | 2020-12-15 | 2021-11-17 | Grit system for a rail vehicle |
Country Status (5)
Country | Link |
---|---|
US (1) | US11952017B2 (en) |
EP (1) | EP4237306A1 (en) |
CN (1) | CN116583452A (en) |
DE (1) | DE102020215952A1 (en) |
WO (1) | WO2022128294A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102022213013A1 (en) | 2022-12-02 | 2024-06-13 | Siemens Mobility GmbH | Spreading agent system for a rail vehicle |
DE102022213002A1 (en) | 2022-12-02 | 2024-06-13 | Siemens Mobility GmbH | Spreading agent system for a rail vehicle |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1360627A (en) * | 1920-05-26 | 1920-11-30 | Robert D Dreisbach | Automatic sander for locomotives and the like |
GB328597A (en) | 1929-01-28 | 1930-04-28 | Marie Paul Robert Jourdain | Improvements in sanding gear chiefly adapted for use upon locomotives |
US1781637A (en) | 1930-03-05 | 1930-11-11 | Edward J Gilligan | Track sander |
US2256288A (en) * | 1939-09-29 | 1941-09-16 | Westinghouse Air Brake Co | Rail sanding apparatus |
US2342895A (en) * | 1942-06-04 | 1944-02-29 | Edmund P Kelly | Track sanding device |
US2377938A (en) * | 1943-05-11 | 1945-06-12 | Earl W Hoffman | Locomotive sand trap |
US2529751A (en) * | 1947-03-17 | 1950-11-14 | Morris B Brewster Co Inc | Sand trap |
US4114932A (en) | 1977-07-05 | 1978-09-19 | Fred Freeberg | Motor vehicle wheel track sanding device |
FR2713182B1 (en) * | 1993-12-01 | 1996-02-02 | Belles Ondes Forges | Sandblaster comprising a container containing a granular material, in particular sand, associated with a driving wheel. |
DE102012214643A1 (en) | 2012-08-17 | 2014-02-20 | Bombardier Transportation Gmbh | Spreader discharge system for vehicles, in particular rail vehicles, and method for spreading of grit |
DE202014004632U1 (en) | 2014-06-10 | 2014-08-29 | Klein Anlagenbau Ag | Spreader for the discharge of bulk material, in particular of brake sand, on rail-bound vehicles |
AT516916B1 (en) * | 2015-02-26 | 2021-05-15 | Knorr Bremse Gmbh | Dosing system for a sanding system of a rail vehicle |
CN107380176B (en) * | 2017-08-31 | 2019-04-26 | 中车青岛四方车辆研究所有限公司 | Rail vehicle stucco system and stucco method |
DE102017122860A1 (en) | 2017-10-02 | 2019-04-04 | Knorr-Bremse Systeme für Schienenfahrzeuge GmbH | Flow device and method for controlling and / or adjusting a pressure in a pneumatic sand conveyor device for a rail vehicle and a sand conveyor device with a flow device |
-
2020
- 2020-12-15 DE DE102020215952.1A patent/DE102020215952A1/en not_active Withdrawn
-
2021
- 2021-11-17 US US18/257,635 patent/US11952017B2/en active Active
- 2021-11-17 EP EP21819040.3A patent/EP4237306A1/en active Pending
- 2021-11-17 WO PCT/EP2021/081976 patent/WO2022128294A1/en active Application Filing
- 2021-11-17 CN CN202180083812.5A patent/CN116583452A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
US11952017B2 (en) | 2024-04-09 |
CN116583452A (en) | 2023-08-11 |
DE102020215952A1 (en) | 2022-06-15 |
WO2022128294A1 (en) | 2022-06-23 |
US20240043046A1 (en) | 2024-02-08 |
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