• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device (1) for spreading granules (2), in particular for spreading sand into the gap between rail (3) and wheel (4) of a rail vehicle (5), with a housing (6), at least one inlet (7) for the granules (2) and at least one outlet (8) for the granules (2), an axially movable metering piston (9) and a compressed air connection (11) opening into a pressure chamber (10) for actuating the metering piston (9) using compressed air to dose the granulate (2). In order to create a particularly simple and compact device (1), a conveying air chamber (12) with a compressed air connection (13) separate from the pressure chamber (10) is provided, and at least one bore (14) is provided in the metering piston (9), which bore ( 14) connects the conveying air chamber (12) to the at least one outlet (8) for the granules (2), so that the granules (2) can be conveyed to the at least one outlet (8) by means of compressed air.
    公开号:AT521564A1
    申请号:T50671/2018
    申请日:2018-08-06
    公开日:2020-02-15
    发明作者:Weiß Ralf；Reich Alexander；Bartling Werner
    申请人:Nowe Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a device for spreading granules, in particular for spreading sand into the gap between the rail and wheel of a rail vehicle, with a housing, at least one inlet for the granules and at least one outlet for the granules, an axially movable metering piston and an in a compressed air connection opening into a pressure chamber for actuating the dosing piston by means of compressed air for dosing the granulate.
    In the case of rail vehicles in particular, it is customary to spread the static friction between the vehicle wheel and the rail head for starting off or braking by scattering granules, in particular sand, into the gap between the rail and the rail wheel. For this purpose, such spreading devices are arranged in front of the wheels of the rail vehicle and controlled via the vehicle control, for example manually or also automatically. It is necessary to dose a suitable amount of granulate from a container provided for this purpose and to convey it to the gap between the rail and the wheel via a corresponding delivery line.
    Conventional devices for spreading granules therefore usually comprise a corresponding metering device and a discharge device separate therefrom. In addition to electrically, electromagnetically or pneumatically operated pistons, rotating cell wheels are also suitable for dosing a desired amount of granules.
    The metered granulate is usually conveyed via a conveyor line to the gap between the rail and the wheel, also using compressed air, as described, for example, in AT 403 559 B.
    Another spreading device operated via compressed air has become known, for example, from WO 2008/061650 A1.
    The metering and conveying devices of known devices for spreading granules are often relatively large, which is why such constructions are not very suitable for retrofitting existing rail vehicles with a limited amount of space. In addition, the transportation of the metered granulate / 24 over larger spatial distances requires a relatively high amount of energy or a high compressed air requirement.
    The object of the invention is to provide an above-mentioned device for spreading granules, which has a compact and space-saving structure, so that retrofitting is also possible with existing rail vehicles with limited space. The spreading device in question should also be distinguished by particularly high efficiency with regard to the required energy requirement. Disadvantages of known spreading devices should be avoided or at least reduced.
    The object according to the invention is achieved in that a conveying air chamber with a compressed air connection which is separate from the pressure chamber is provided, and in that at least one bore is provided in the metering piston, which bore connects the conveying air chamber with the at least one outlet for the granules, so that the granules are compressed by compressed air at least one outlet is eligible. According to the invention, a spatial and functional integration of the metering and conveying function is achieved by arranging a conveying air chamber that is separate from the pressure chamber and the at least one bore in the metering piston. In contrast to the prior art for conveying the metered granules, no separate device, for example a separate injector, is required, but the compressed air flow for conveying the granules to the outlet of the spreading device is via the conveying air chamber, which is located behind the metering piston, via the at least one Drilled hole in the dosing piston. The discharge of the conveying air at the front end of the metering piston takes place spatially separated from the inlet for the granulate, but in the immediate vicinity, so that the granulate and conveying air are optimally mixed. This contributes to a particularly efficient conveyance of the granulate to the desired location, usually the gap between the rail and the wheel, with minimal energy consumption. The present spreading device is essentially characterized by a piston metering without an injector. The structure of the spreading device is particularly space-saving and compact, which is why it is particularly suitable for retrofitting to rail vehicles with a low / 24
    Space available. The compact and relatively simple structure of the spreading device also results in reduced maintenance.
    According to a feature of the invention, a plurality of preferably annular bores are arranged in the metering piston. This improves the distribution of the conveying air and leads to a uniform conveying flow and consequently to a larger bridging conveying path or a lower energy expenditure and compressed air requirement.
    If the bores are inclined to the central axis of the metering piston, better conveyance of the granulate and higher acceleration can be achieved. Tilt angles in the range between 1 ° and 5 ° have proven to be particularly suitable.
    If a preferably annular granulate chamber connected to the at least one inlet for the granules is arranged around that end of the metering piston which faces the at least one outlet for the granules, an improved continuous feed of the granules can be ensured. Due to the essentially circular inflow of the granulate and the preferably annular outflow of the compressed air for conveying the granulate, the use of energy for conveying the granulate and the compressed air requirement can be further reduced, or the granulate can be transported over long distances to the desired location.
    The at least one inlet for the granulate is ideally inclined, preferably inclined by 30 ° to 60 °, in particular inclined by 45 °. Such an inclination of the granulate feed enables a regular and continuous inflow of the granulate to be achieved.
    If the end of the metering piston, which faces the at least one outlet for the granules, is pointed, a better metering of the granules can be achieved since the gap size can be varied continuously by moving the metering piston through the tip of the end of the metering piston.
    / 24
    According to a further feature of the invention, a spring is provided for resetting the metering piston. As a result, the dosing piston can be reset to the starting position without the use of compressed air. A spiral spring, which has a predefined proportional spring characteristic, is preferably used as the return spring. Alternatively, spring washer assemblies with comparable characteristics are also conceivable. In any case, the force of the return spring must bring about a quick and precise return of the dosing piston. In addition, the return spring prevents the granulate from running out unintentionally if the pressure drops.
    The spring is preferably arranged in a tight spring space. The arrangement of such a pressure-tight spring chamber, in which the return spring is arranged, forms a pressure cushion which facilitates the return of the metering piston.
    If a valve is arranged in this spring chamber, the metering piston can be reset in a controlled manner.
    The separation between the pressure chamber and the conveying air chamber can be formed by a separating element with a guide for the metering piston. The guide between the separating element and the metering piston can be formed, for example, by appropriate sealing lips.
    A bypass for guiding a portion of the compressed air used for conveying the granules to feed the granules can be arranged between the conveying air chamber and the at least one inlet for the granules. By guiding part of the compressed air used through such a bypass, a negative pressure in the inlet for the granules can be prevented, which could lead to a compression of the granules and consequently to a blockage of the conveyance of the granules. Even a slight, brief overpressure in the feed of the granulate can prevent the occurrence of an undesirable negative pressure and thus incorrect dosing or incorrect conveying.
    In order to be able to adjust the compressed air flowing in the bypass, a regulating screw is preferably provided in the bypass. In the simplest case, the regulating screw for adjusting the compressed air flowing through the bypass is formed by a conical screw, which changes the cross section of the bypass accordingly.
    A seal, preferably an O-ring, can be arranged between the metering piston and the housing. Such a seal, which is preferably made of elastic material, e.g. If rubber is formed, it can be ensured that no granules get into the outlet of the spreading device in the idle state.
    The at least one outlet for the granules can be connected to a delivery line. The conveying line, which can be fastened to the outlet via a corresponding flange or the like, transports the metered granulate to the intended location, in particular the gap between the wheel and rail of the rail vehicle, in order to increase the static friction between the wheel and rail and to facilitate starting and braking of the rail vehicle ,
    According to one embodiment variant, the metering piston is arranged essentially horizontally and the housing can be connected to a container for the granulate from below. This variant is particularly suitable for retrofitting the spreading device in existing vehicles, in particular rail vehicles, since the overall height is particularly low. In this case, the spreading device can simply be connected and attached to an existing granulate container from below.
    Alternatively, the metering piston can also be arranged substantially vertically and the housing in a container for the granulate. This variant is more suitable for a new construction of a rail vehicle, in which there is at most a larger space for accommodating the granulate container and the metering piston.
    According to a variant of the invention, the compressed air connections are connected to a common compressed air line with the interposition of a throttle valve. Here the dosing and conveying device of the spreading device in question is supplied via a common compressed air line or a common / 24 compressed air connection. This so-called single-line system is particularly suitable for a working pressure of 3 bar to 8 bar max. 10 bar, and is particularly suitable for bridging shorter conveying paths, e.g. below 1.5 m. Via the throttle valve or a flow resistance, the pressure for conveying the granulate can be reduced accordingly compared to the pressure for the movement of the metering piston.
    If a non-return valve is arranged in the compressed air line, a so-called after-blowing effect or a post-blowing function for blowing out the delivery line after a spreading process has ended can be achieved or improved. After switching off the compressed air supply, the dosing piston is moved back to its starting position. The remaining compressed air in the pressure chamber passes through the check valve via the compressed air line into the conveying air chamber and transports any granulate deposits in the conveying line to the end of the conveying line.
    In an alternative variant, the compressed air connections are connected to two different compressed air lines. In this variant, two compressed air supplies are provided on the vehicle, which are transported into the pressure chamber or conveying air chamber via two different compressed air lines. This system is also for a working pressure of 3 bar to 8 bar up to max. Designed for 10 bar, but is suitable for bridging larger conveying paths, for example up to 15 m.
    If a vent valve is arranged in the compressed air line, the return of the dosing piston to the starting position can be supported.
    1 shows a schematic diagram of a device for spreading granules mounted on a rail vehicle;
    2 shows a side section through an embodiment variant of the device according to the invention for spreading granules in a horizontal arrangement;
    FIG. 3 shows a sectional view through the device for spreading granules according to FIG. 2 along the sectional line III 7/24
    III;
    Fig. 4 shows a vertical arrangement of the device for spreading granules in a container for the granules;
    5 shows a block diagram to illustrate a method for operating the device for spreading granules according to the invention;
    6 shows a block diagram to illustrate an alternative method for operating the device for spreading granules according to the invention; and
    7 shows a schematic time diagram to illustrate the control of the compressed air sources for operating the device for spreading granules.
    1 shows a basic illustration of a device 1 for spreading granules 2, which is mounted on a rail vehicle 5. The device 1 for spreading granules 2 is connected under a container 22 for the granules 2, and doses and conveys a desired amount of granules 2, via a conveying line 21 into the gap between the wheel 4 of a rail vehicle 5 and the rail 3 to reduce the friction to increase between rail 3 and wheel 4. The device 1 for spreading the granules 2 is generally controlled manually or automatically.
    FIG. 2 shows a side section through an embodiment variant of the device 1 according to the invention for spreading granules 2 in a horizontal arrangement under a container 22 for the granules 2. The device 1 includes a housing 6 with at least one inlet 7 for the granules 2 and at least one outlet 8 for the granules 2, to which a corresponding delivery line 21 is connected, which feeds the metered granules 2 to the desired location. For metering the granules 2 there is an axially movable metering piston 2 within the housing 6. The movement of the metering piston 9 takes place via compressed air which can be blown into the pressure chamber 10 via a compressed air connection 11. If the metering piston 9 is moved away from the starting position, the inlet 7 for the granules 2 is released, whereby a quantity of granules 7 corresponding to the axial displacement and duration of the displacement of the metering piston 9 can be metered in front of the metering piston 9. In the exemplary embodiment shown in FIG. 24, the inlet 7 for the granulate 2 is connected to a preferably annular granule chamber 15, so that a uniform, continuous inlet of the granulate 2 is possible. Separated from the pressure chamber 10 is a conveying air chamber 12 within the housing 6 of the device 1, into which conveying air chamber 12 compressed air can also be introduced via a corresponding compressed air connection 13. Via at least one bore 14 in the metering piston 9, the compressed air of the conveying air chamber 12 reaches the end of the metering piston 9 at the outlet 8 for the granulate and thus serves to convey the metered granulate 2 via the delivery line 21 to the desired location, in particular the gap between wheel 4 and Rail 3. A plurality of bores 14 are preferably arranged in an annular manner in the metering piston in order to achieve an annular distribution of the compressed air for conveying the granulate 2. An inclination of the bores 14 with respect to the central axis A of the metering piston 9, for example by an angle α between 1 ° and 5 °, supports the conveyance of the granules 2 with the least possible energy expenditure. The metering piston 9 can be pointed at the free end which faces the outlet 8 for the granules 2, which facilitates the metering of the granules 2. The inlet 7 for the granules 2 can also be provided with a certain inclination, preferably 30 ° to 60 °. A continuous inflow of the granulate 2 from a container 22 (not shown) is thereby achieved. A spring 16 is preferably used to automatically reset the metering piston 9 to the starting position. The spring 16 can be formed by a spiral spring which is arranged in a tight spring chamber 30. The spring chamber 30 can be vented via a valve 31 if necessary. In order to ensure tightness in the starting position of the metering piston 9 and to prevent undesired leakage of granules 2 from the inlet 7 to the outlet 8, a corresponding seal 20, in particular an O-ring made of a suitable elastic material, can be arranged. A separating element 17 with a corresponding guide for the metering piston 9 can be arranged to separate the pressure chamber 10 and the conveying air chamber 12. The separating element 17, like the element arranged in front of the conveying air chamber 12, is fastened to the housing 6 with corresponding locking screws (not shown), which is indicated by the dash-dotted lines. Corresponding guides and seals for the axially movable metering piston 9 are also arranged on the separating element 17 and also on / 24 (the element arranged in front of the conveying chamber 12).
    In order to prevent a negative pressure in the inlet 7 for the granules 2, a bypass 18 can be arranged between the conveying air chamber 12 and the inlet 7 for the granules 2, via which bypass 18 part of the compressed air used to convey the granules 2 to the inlet 7 of the granules 2 to be led. The amount of compressed air passed through the bypass 18 can be adjusted via a regulating screw 19 in the bypass 18.
    FIG. 3 shows a sectional view through the device 1 for spreading granules 2 according to FIG. 2 along the section line III-III.
    In this embodiment variant, the device 1 for spreading granules 2 is arranged essentially horizontally under a container 22 for the granules 2. From the sectional view according to FIG. 3 it can be seen that six bores 14 are arranged annularly in the metering piston 9 in the metering piston 9. The annular granule chamber 15 is also clearly visible in this sectional view. The horizontal arrangement of the device 1 is particularly suitable for retrofitting existing rail vehicles with limited space.
    FIG. 4 shows a vertical arrangement of the device 1 for spreading granules 2 in a container 22 for the granules 2. In this embodiment variant, which takes up more overall height than a horizontal arrangement, the device 1 for spreading the granules 2 is arranged in the container 22 for the granules 2. Otherwise, the function of the device 1 does not differ from that of the horizontal arrangement according to FIGS. 2 and 3.
    5 shows a block diagram to illustrate a method for operating the device 1 according to the invention for spreading granules 2. In this so-called introduction system, a compressed air source 27 is connected via a common compressed air line to both the pressure chamber 10 or its compressed air connection 11 and to the Conveying air chamber 12 or its compressed air connection 13. The desired level of compressed air for the movement of the metering piston 9 on the one hand and the conveyance of the granulate on the other hand can be set via a compressed air regulator 28 and a throttle / 24 valve 23. A check valve 26 in the compressed air line 24 serves to cause the so-called after-blowing effect, in which, after the metering and conveying process has ended, the compressed air present in the pressure chamber 10 does not expand into the pressure line 24, but rather enters the conveying air chamber 12 and the remaining granules 2 in the conveyor line 21 transported away.
    6 shows a block diagram to illustrate an alternative method for operating the device 1 according to the invention for spreading granules 2. In the alternative method, two compressed air lines 24, 25 are connected to the compressed air connections 11 for the pressure chamber 10 and 13 for the conveying air chamber 12, respectively. The level of compressed air desired for the movement of the metering piston 9 and the conveyance of the granules 2 can be set by means of appropriate compressed air regulators and a corresponding throttle valve 23. In this so-called two-line system, the metering chamber 10 is supplied and the conveying air chamber 12 is supplied via separate compressed air lines 24, 25, and the function of metering and delivery can be controlled and regulated independently of one another.
    Finally, FIG. 7 shows a schematic time diagram to illustrate the regulation of the compressed air sources for operating the device 1 for spreading granules 2. The compressed air p1 for moving the metering piston is controlled in accordance with the desired metering of the granules 2. After switching off the compressed air p1 for the movement of the metering piston 9, the pressure p1 in the pressure chamber 10 slowly drops. The compressed air p2 for conveying the granules is activated longer beyond the switch-off time of the metering piston 9 in order to achieve a safe transport of the granules 2 through the conveying line 21 and a corresponding blowing out of the conveying line 21.
    The present device 1 for spreading granules 2 is characterized by fewer components, a space-saving design, a lower weight and lower costs, as a result of which a wide use is also possible for retrofitting existing rail vehicles. In addition, the spreading device in question is characterized by short reaction times, low wear and low energy consumption.
    权利要求:
    Claims (20)
    [1]
    claims:
    1. Device (1) for spreading granules (2), in particular for spreading sand into the gap between rail (3) and wheel (4) of a rail vehicle (5), with a housing (6), at least one inlet (7 ) for the granules (2) and at least one outlet (8) for the granules (2), an axially movable metering piston (9) and a compressed air connection (11) opening into a pressure chamber (10) for actuating the metering piston (9) by means of compressed air for metering the granulate (2), characterized in that a conveying air chamber (12) with a compressed air connection (13) is provided, which is separate from the pressure chamber (10), and that at least one bore (14) is provided in the metering piston (9) Bore (14) connects the conveying air chamber (12) to the at least one outlet (8) for the granules (2), so that the granules (2) can be conveyed to the at least one outlet (8) by means of compressed air.
    [2]
    2. Device (1) according to claim 1, characterized in that in the metering piston (9) a plurality of preferably annular holes (14) are arranged.
    [3]
    3. Device (1) according to claim 2, characterized in that the bores (14) to the central axis (A) of the metering piston (9) are arranged inclined.
    [4]
    4. Device (1) according to one of claims 1 to 3, characterized in that around that end of the metering piston (9) which faces the at least one outlet (8) for the granules (2), one with the at least one inlet (7) for the granulate (2) connected preferably annular granulate chamber (15) is arranged.
    [5]
    5. Device (1) according to one of claims 1 to 4, characterized in that the at least one inlet (7) for the granules (2) is inclined, preferably inclined by 30 ° to 60 °, in particular inclined by 45 °.
    [6]
    6. The device (1) according to any one of claims 1 to 5, characterized in that the end of the metering piston (9) which the
    13/24 at least one outlet (8) for the granulate (2) faces, is pointed.
    [7]
    7. Device (1) according to one of claims 1 to 6, characterized in that a spring (16) for resetting the metering piston (9) is provided.
    [8]
    8. The device (1) according to claim 7, characterized in that the spring (16) is arranged in a tight spring chamber (30).
    [9]
    9. The device (1) according to claim 8, characterized in that a valve (31) is arranged in the spring chamber (30).
    [10]
    10. The device (1) according to one of claims 1 to 9, characterized in that the separation between the pressure chamber (10) and the conveying air chamber (12) is formed by a separating element (17) with a guide for the metering piston (9).
    [11]
    11. The device (1) according to any one of claims 1 to 10, characterized in that between the conveying air chamber (12) and the at least one inlet (7) for the granulate (2), a bypass (18) for guiding a portion of the to promote Granules (2) used compressed air for the inlet (7) of the granules (2) is arranged.
    [12]
    12. The device (1) according to claim 11, characterized in that a regulating screw (19) is provided in the bypass (18).
    [13]
    13. The device (1) according to any one of claims 1 to 12, characterized in that a seal (20), preferably an O-ring, is arranged between the metering piston (9) and the housing (6).
    [14]
    14. The device (1) according to any one of claims 1 to 13, characterized in that the at least one outlet (8) for the granules (2) is connected to a delivery line (21).
    [15]
    15. The device (1) according to any one of claims 1 to 14, characterized in that the metering piston (9) is arranged substantially horizontally and the housing (6) from below to a container (22) for the granules (2) can be connected ,
    14/24
    [16]
    16. The device (1) according to any one of claims 1 to 15, characterized in that the metering piston (9) is arranged substantially vertically and the housing (6) is arranged in a container (22) for the granules (2).
    [17]
    17. The device (1) according to any one of claims 1 to 16, characterized in that the compressed air connections (11, 13) are connected to a common compressed air line (24) with the interposition of a throttle valve (23).
    [18]
    18. The device (1) according to claim 17, characterized in that a check valve (26) is arranged in the compressed air line (24).
    [19]
    19. Device (1) according to one of claims 1 to 16, characterized in that the compressed air connections (11, 13) are connected to two different compressed air lines (24, 25).
    [20]
    20. The device (1) according to claim 19, characterized in that a vent valve (29) is arranged in the compressed air line (24).
    类似技术:
    公开号 | 公开日 | 专利标题
    AT516916B1|2021-05-15|Dosing system for a sanding system of a rail vehicle
    DE2443909A1|1975-10-23|PISTON PUMP
    DE1556561C3|1978-06-15|Pneumatic pressure conveyor
    CH669826A5|1989-04-14|
    EP3768563B1|2021-06-30|Device for spreading granulate
    EP3057844B1|2019-12-18|Metering device for granular material
    CH623927A5|1981-06-30|
    DE2041766A1|1971-05-06|Pressure regulator
    DE19725345C2|2002-11-07|lubricator
    DE2219199B2|1977-12-29|Bulk material pneumatic conveyor - has valves in control pipe matching pressure drop to that in main pipe
    DE202004013138U1|2005-04-14|Air distributor for a compressed air-operated powder delivery unit of a powder coating device
    DE8017547U1|1980-10-09|DOSING DEVICE FOR POWDER, IN PARTICULAR FUEL POWDER
    DE1087974B|1960-08-25|Device for the pneumatic conveying of grainy or dust-like material, especially concrete, in a pipeline
    EP2105207B1|2011-11-30|Receptable for powder-form substances, conveyer system for powder-form substances and method for operating the same
    DE19752005A1|1999-05-27|Powder outlet tube to liquid mixer
    DE60208005T2|2006-08-17|METHOD FOR INJECTION IN A CLOSED LIQUID SYSTEM
    DE2311765A1|1973-09-20|MEDIUM SUPPLY SYSTEM FOR SUPPLYING A MEDIUM CONSUMER UNIT FROM AT LEAST TWO MEDIUM PRESSURE SOURCES
    DE1426584C3|1980-04-30|Control device for a double-acting working cylinder
    CH417469A|1966-07-15|Control for pneumatic conveying device
    DE19644727C2|2003-07-31|Control nozzle for accelerating and controlling conveyed goods in pneumatic solids conveying systems
    DE1601961C|1971-07-22|Device for repairing the linings of high temperature furnace
    DE1178240B|1964-09-17|Device for regulating the air pressure in inflatable, preferably cushion-shaped hollow bodies
    CH659692A5|1987-02-13|DEVICE FOR FEEDING LUBRICANT.
    DE1043375B|1958-11-13|Pressure regulating device
    DE2051141A1|1972-04-20|Dosing and conveying device for electrostatic powder coating systems
    同族专利:
    公开号 | 公开日
    CN112512892A|2021-03-16|
    EP3768563A1|2021-01-27|
    CA3102482A1|2020-02-13|
    EP3768563B1|2021-06-30|
    AT521564B1|2022-01-15|
    ES2883777T3|2021-12-09|
    PL3768563T3|2021-12-13|
    US20210146966A1|2021-05-20|
    RU2753376C1|2021-08-13|
    WO2020030559A1|2020-02-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR593382A|1925-02-11|1925-08-21|Compressed air operated sand pit for all vehicles on rail or not|
    EP0656292A1|1993-12-01|1995-06-07|Forges De Belles-Ondes|Sanding device with a recipient containing granular matter, particularly sand, for a wheel of a rail coach|
    WO2015055723A1|2013-10-15|2015-04-23|Werner Bartling|Metering device for granular material|
    US1356982A|1920-04-24|1920-10-26|William S Griswold|Track-sander|
    US2243243A|1940-01-16|1941-05-27|New York Air Brake Co|Sander|
    US2360226A|1942-03-23|1944-10-10|Viloco Railway Equipment Co|Sander for locomotive valves|
    US2606780A|1950-11-07|1952-08-12|Tobias J Loftus|Sand pipe dispensing nozzle|
    SU1211119A1|1984-05-04|1986-02-15|Производственное Объединение "Ворошиловградский Тепловозостроительный Завод Им.Октябрьской Революции"|Device for controlling locomotive sand box|
    AT403559B|1995-01-11|1998-03-25|Goldmann Norbert|SPREADER|
    AT504600A1|2006-11-24|2008-06-15|Goldmann Norbert|METHOD AND DEVICE FOR CONTROLLING SANDING VOLUMES IN RAIL VEHICLES|AT522142B1|2019-04-26|2020-08-15|Nowe Gmbh|Device for filling a container with bulk material, in particular sand|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50671/2018A|AT521564B1|2018-08-06|2018-08-06|Device for spreading granules|ATA50671/2018A| AT521564B1|2018-08-06|2018-08-06|Device for spreading granules|
    CA3102482A| CA3102482A1|2018-08-06|2019-08-05|Device for spreading granulate|
    PCT/EP2019/070955| WO2020030559A1|2018-08-06|2019-08-05|Device for spreading granulate|
    EP19752152.9A| EP3768563B1|2018-08-06|2019-08-05|Device for spreading granulate|
    RU2021100763A| RU2753376C1|2018-08-06|2019-08-05|Device for spreading granular material|
    US17/262,442| US20210146966A1|2018-08-06|2019-08-05|Device for spreading granulate|
    PL19752152T| PL3768563T3|2018-08-06|2019-08-05|Device for spreading granulate|
    ES19752152T| ES2883777T3|2018-08-06|2019-08-05|Granule spreading device|
    CN201980045280.9A| CN112512892A|2018-08-06|2019-08-05|Device for scattering particles|
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