• 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:
    Air supply for an air spring (3) of a rail vehicle, comprising a main cross member (1) of at least one extruded light metal profile (2), which is aligned in the installation position of the main cross member (1) in the longitudinal direction of the rail vehicle and an air spring arranged on the main cross member (1) ( 3), wherein the main cross member (1) comprises at least one closed profile chamber (4) with a circular cross section, which extends over a certain length of the extruded light metal profile (2), and wherein at least one bore (5) in a wall of the main cross member (1 ) connects the gas space (6) of the air spring with the profile chamber (4).
    公开号:AT518866A4
    申请号:T50759/2016
    申请日:2016-08-23
    公开日:2018-02-15
    发明作者:Mayer Wilhelm
    申请人:Siemens Ag Oesterreich；
    IPC主号:
    专利说明:

    Confession
    Air supply for an air spring of a rail vehicle
    Technical area
    The invention relates to an air supply for an air spring of a rail vehicle.
    State of the art
    Passenger rail vehicles are very often equipped with air suspension, as this ensures good suspension comfort and allows easy-to-implement level control. This is particularly necessary in suburban rail vehicles such as subways, in which a constant floor height is required even with changing loading conditions. Air suspensions typically include a compressed air supply with a compressor and compressed air accumulator, associated lines and controls and per chassis usually two compressed air springs (rubber bellows). The air pressure system of the air spring is equipped with means for aeration and venting. In this way, an automatic level control can be created, which allows, for example, that subways always have the lowest possible level difference between the platform and the passenger floor level, regardless of their loading state. The air springs are usually constructed so that they are supported in the installed state at its top by the subframe, more precisely, the main cross member. The contact point air spring main cross member also forms a sealing surface of the air spring, which have an open, kugelkalottenähnliche shape when removed. By this construction, it is possible to guide the compressed air connection of an air spring through a limiting wall of the main cross member (lower chord) and provide at this point a connection means for connecting a compressed air line. Regardless of the embodiment of the undercarriage (steel or light metal construction), this connection device is critical because it is accessible only after the manufacture of the undercarriage with great difficulty. A maintenance or repair would be done only with removal of the entire chassis and possibly other components. From the prior art, no solutions are known which would allow accessibility of the connection point between a compressed air line and an air spring in the installed state of the air spring, since this connection means is arranged inside a main cross member. A simple solution, the supply of compressed air by means of a flexible compressed air line at another location, such as the wheel-side mounting plate is associated with such significant disadvantages that this solution is generally not implemented. In particular, the significantly lower durability of a flexible air duct in contrast to a permanently laid line requires that this solution is avoided as far as possible.
    Presentation of the invention
    The invention is therefore based on the object to provide an air supply for an air spring of a rail vehicle, which ensures easy maintenance, in particular, a maintenance with built-in chassis should be able to.
    The object is achieved by an air supply for an air spring of a rail vehicle with the features of claim 1. Advantageous embodiments are the subject of the subordinate claims.
    The basic idea of the invention is an air supply for an air spring of a rail vehicle is described which comprises a main cross member of at least one extruded light metal profile, which is aligned in the installation position of the main cross member in the longitudinal direction of the rail vehicle and arranged on the main cross member air spring, the main cross member at least one closed Profile chamber having a circular cross section which extends over a certain length of the extruded light metal profile, and wherein at least one bore in a wall of the main cross member connects the gas space of the air spring with the profile chamber.
    As a result, the advantage can be achieved to realize an air duct to a rail vehicle air spring, which can be constructed very easily and with a minimum of required components. In particular, all maintenance or. Sealing points of the air supply that are virtually inaccessible to conventional solutions when installed. Such an air supply according to the invention is simpler and less expensive to expand and the maintenance costs are substantially reduced compared to conventional air supply.
    According to the invention, the air supply per supply air spring comprises a closed profile chamber with a circular
    Cross section in the main crossbeam. The main cross member is constructed of at least one extruded light metal profile, wherein in general several light metal profiles are non-detachably connected (welded) together. This construction is in particular common in light metal vehicles. The light metal profiles used in this case typically comprise a plurality of webs and straps which form closed chambers, whereby the strength is increased and the weight is lowered. The closed profile chamber with a circular cross-section is formed here as well as the other (typically triangular) chambers in the manufacturing process of the light metal profile simultaneously with these. The closed profile chamber with a circular cross section thereby extends over the entire length of the light metal profile. The connection of the gas space of the air spring takes place through a hole in a wall (belt) of the main cross member, normal to the longitudinal direction of the light metal profile.
    It is particularly advantageous to use a closed profile chamber with a circular cross section for air guidance, as this is easy to connect to the compressed air system of the vehicle and can be easily sealed at the side facing away from the terminal by means of a threaded plug. As a result, all else required for the preparation of the connection welding can be omitted. Furthermore, by the leadership in a separate, compared to a chamber of the main cross member significantly smaller chamber, the spring behavior of the air spring is not affected, since the coupled to the air spring air volume is very low.
    Another advantage of a closed profile chamber with a circular cross section for air guidance is that the main cross member is not subject to approval as a pressure vessel, which causes a significant simplification of the required strength and maintenance checks. For this purpose, it is necessary to carry out the closed profile chamber with a circular cross section with a substantially smaller cross section than the other, generally triangular chambers of the main cross member. Typically, the closed profile chamber is to be designed with a circular cross section with a diameter of 20 mm.
    Furthermore, by the very simple
    Sealing possibilities of the profile chamber with a circular cross section, a complicated sealing of a chamber of the main cross member are bypassed.
    A preferred embodiment of the invention provides to produce the profile chamber with a circular cross section following the production of the light metal profile by means of a machining step (drilling). As a result, the production tool for the light metal profile (Preßmatrizze) can be made simpler and it is possible to equip even a portion of the length of the light metal profile with a profile chamber with a circular cross-section.
    It is advantageous, the closed profile chamber is provided with a circular cross-section at both ends with an internal thread and to close at one end with a screwed plug and provide at its other end a screwed connection flange to which the further piping of the air supply is to be connected. In this way, all sealing points are arranged outside the main cross member and are therefore easily accessible for maintenance. Instead of a plug, a further connecting flange can also be screwed in at the other end of the profile chamber with a circular cross-section. As a result, the wiring in the base can be simplified, as such a further connection for the pressure supply of the air suspension is available, which can be used for example for a pressure gauge or the connection of the air spring of the opposite air spring.
    However, in case of damage to the thread for the screwed connection flange, the repair of this thread is very complicated.
    In a further development of the invention, it is therefore advisable to make the air connection to the profile chamber with a circular cross-section with a connector which is inserted into the profile chamber and which is sealed against the inner wall of the profile chamber with a circular cross-section and a bore in its longitudinal direction and in This bore has an opening transverse bore, via which the air supply takes place. The attachment of the fitting to the light metal profile is preferably carried out by means of at least one screw, wherein the screw are oriented parallel to the longitudinal axis of the fitting. In this way, the manufacturing technology critical cutting a large internal thread can be avoided. At most, even smaller, much less critical and easier to repair internal threads are produced. A particular advantage of this embodiment is that even a plug and the associated thread can be omitted since the profile chamber with a circular cross section is depressurized even outside the region of the connecting piece.
    Brief description of the drawings
    They show by way of example:
    Fig.l main cross member, view in the vehicle longitudinal direction.
    Fig.2 main cross member, oblique view.
    Fig.3 main cross member, sectional view, threaded connection. Fig.4 main cross member, sectional view, fitting. Fig.5 main cross member with connector, detail.
    Fig.6 connector.
    EMBODIMENT OF THE INVENTION FIG. 1 shows an example and schematically a
    Main cross member in a view in the vehicle longitudinal direction. It is shown a main cross member (1) of a rail vehicle, as he can preferably be used in light metal vehicles. The main cross member 1 is composed of a plurality of extruded light metal profiles 2, which are welded together. Two air springs 3 are arranged on both sides and transmit forces in the vertical direction between the main cross member 1 and the chassis. This chassis is not shown in the schematic diagram Fig.l. In the area of the air springs 3, one of the light metal profiles 2 is in each case provided with a profile chamber 4 with a circular cross section, which extends over the entire longitudinal extension of the respective light metal profile 2.
    2 shows an example and schematically a main cross member in an oblique view. It is the main cross member 1 of Fig.l shown, in particular, the rounded running outlets are recognizable to the longitudinal members of the rail vehicle. The profile chambers 4 with circular cross-section are easily accessible on both sides, so that attached to them assemblies are easy to maintain.
    3 shows an example and schematically main cross member with threaded connection in a sectional view. It is shown a section through a main cross member 1 in the vehicle longitudinal direction in the region of an air spring 3. The air spring 3 is arranged below the main cross member 1, or the light metal profile 2 and has a gas space 6, which is to be acted upon by the air spring system of the vehicle with changing gas pressure. The light metal profile 2 is shown cut in the region of a profile chamber 4 with a circular cross section, wherein one end of the profile chamber 4 is closed by means of a screwed plug 7 and the other end is equipped with a threaded connection flange 8. This connection flange 8 has a bore in the longitudinal direction, via which compressed air can flow into the profile chamber 4. The profile chamber 4 is connected in the region of the underlying gas chamber 6 of the air spring 3 with a bore 5.
    4 shows an example and schematically main cross member with connector in a sectional view. It is, as in Fig.3 a main cross member 1 of a rail vehicle in
    Area of an air spring 3 shown, but instead of a screwed connecting flange 8, a connecting piece 9 is inserted into the profile chamber 4. The other components, such as air spring 3 and bore 5 are unchanged from the embodiment shown in Figure 3, but the profile chamber 4 is not closed with a screwed plug 7, since the use of a fitting 9, the profile chamber is depressurized at this point.
    5 shows by way of example and schematically a detail of a main cross member with connector. It is the region of the light metal profile 2 shown in Figure 4 in a sectional view, in which a connector 9 is inserted. The connector 9 has a longitudinal bore, or recess and is releasably connected by means of a fastening 10 with the light metal profile 2. The connecting piece 9 is sealed relative to the profile chamber 4 by means of seals 13, which are arranged on both sides of the bore 5, which allows an air flow between the gas chamber 6 and the profile chamber 4. A transverse bore 11 connects the recess in the connecting piece 9 with the profile chamber 4, so that a gas flow between the gas space 6 of the air spring 3 and the outer terminal of the connecting piece 9 is made possible. In this case, only the area of the profile chamber 4 is applied to the transverse bore 11 between the seals 13 with compressed air, which allows the elimination of a screwed plug 7.
    6 shows an example and schematically a connector.
    It is shown a connector 9, as used in the embodiment shown in FIGS. 4 and 5.
    The connecting piece 9 is substantially cylindrical and has a fastening 10 for releasable attachment to a light metal profile 2. In figurative
    Embodiment, the attachment 10 is formed as a molding (tab) through which a screw parallel to the longitudinal axis of the connecting piece 9 can be produced. The connector 9 is provided in its cylindrical part with grooves 12, in which seals 13 can be inserted. In the exemplary embodiment shown, four grooves 12 are provided in two groups of two grooves 12, so that each sealing point two seals 13 act in succession.
    Between the two groups of grooves 12, a transverse bore 11 is arranged, which connects the recess 9 provided in the interior of the connecting piece with the profile chamber 4.
    List of designations 1 Main cross member 2 Extruded light metal profile 3 Air spring 4 Profile chamber with circular cross section 5 Bore 6 Gas space of air spring 7 Plug 8 Bolted flange 9 Fitting 10 Fastening 11 Cross hole 12 Groove 13 Seal
    权利要求:
    Claims (6)
    [1]
    claims
    1. Air supply for an air spring (3) of a rail vehicle, comprising a main cross member (1) made of at least one extruded light metal profile (2), which is aligned in the installed position of the main cross member (1) in the longitudinal direction of the rail vehicle and one on the main cross member (1) arranged Air spring (3), characterized in that the main cross member (1) comprises at least one closed profile chamber (4) with a circular cross section, which extends over a certain length of the extruded light metal profile (2), and wherein at least one bore (5) in one Wall of the main cross member (1) connects the gas space (6) of the air spring with the profile chamber (4).
    [2]
    2. Air supply for an air spring (3) of a rail vehicle according to claim 1, characterized in that the closed profile chamber (4) is produced with a circular cross section directly during the manufacturing process of the extruded light metal profile (2) by the extrusion process and over the entire length of extruded aluminum profiles extends.
    [3]
    3. air supply for an air spring (3) of a rail vehicle according to claim 1, characterized in that the closed profile chamber (4) is made with a circular cross section by means of a machining operation.
    [4]
    4. Air supply for an air spring (3) of a rail vehicle according to one of claims 1 to 3, characterized in that the closed profile chamber (4) is provided with a circular cross-section at both ends with an internal thread, wherein a connecting flange (8) or a Plug (7) are screwed into the internal thread.
    [5]
    5. air supply for an air spring of a rail vehicle according to one of claims 1 to 3, characterized in that in the closed profile chamber (4) with a circular cross-section, a connecting piece (9) is inserted, which against the inner wall of the profile chamber (4) with a circular cross-section is sealed and has a bore in its longitudinal direction and an opening into this bore transverse bore (11), via which the air is supplied into the profile chamber with a circular cross-section.
    [6]
    6. air supply for an air spring of a rail vehicle according to claim 5, characterized in that the connecting piece is connected to the extruded light metal profile by means of at least one screw, wherein the screw are oriented parallel to the longitudinal axis of the connecting piece.
    类似技术:
    公开号 | 公开日 | 专利标题
    AT518866B1|2018-02-15|Air supply for an air spring of a rail vehicle
    AT514235B1|2020-03-15|Drill pipe
    EP3208173A1|2017-08-23|Bogie for a rail vehicle, method for compensating the variation of wheels diameter for rail vehicles and rail vehicle
    EP2619058B1|2019-12-04|Control valve assembly of an air pressure brake for a railway vehicle
    AT516921B1|2017-03-15|Arrangement for fastening a coupling element to a car body of a vehicle
    EP0038978A2|1981-11-04|Pressure control device with indicator for at least two vessels jointly connected under pressure
    EP2753519B1|2015-11-18|Control valve seals and control valves comprising a control valve seal
    WO2009092490A2|2009-07-30|Tensioning device for the endless drive in a timing system on a motor vehicle
    DE102014221284A1|2016-04-21|Spring isolator for a vehicle suspension and vehicle suspension
    EP3347256B1|2021-02-17|Rail vehicle body comprising an earthing point
    DE102019204593A1|2020-10-01|Annular sealing body, tubular body arrangement with such an annular sealing body and method for assembling such a tubular body arrangement
    DE10229964C1|2003-07-17|Blocking device for pressurized medium line uses 2 diagonally opposing circular segment closure elements
    DE102007011025A1|2008-09-11|Arrangement for influencing vehicle tire contact surface has high pressure hoses on tire inner side in transition region between each of two side walls and tire running surface supplied with gas under controllable or regulated pressure
    DE102015100928B4|2019-05-29|Body assembly for a motor vehicle and method for producing such a body assembly
    EP2006242B1|2013-10-16|Pneumatic platform, in particular for vehicles
    AT521916B1|2021-01-15|Spring arrangement
    DE102017124487B4|2020-11-12|Clamping device for clamping a rim flange with a tire bead of a tire that can be filled with compressed gas
    DE102013103861A1|2014-11-06|Lifting platform with hydraulic coupling of the lifting rams
    WO2021198174A1|2021-10-07|Pneumatic device having a seal device and method therefor
    DE102013000703A1|2014-07-17|Pressure medium operated swing motor has connecting device that is made of open channel, which is opened at deactivated swing motor and is reduced in its effective cross-section at defined tilt angle
    DE102017212890A1|2019-01-31|Device for stabilizing a hollow core for the production of a fiber composite component
    DE102013109373B4|2016-09-01|Control valve arrangement of a compressed air brake for a rail vehicle
    DE102011109182A1|2012-08-23|Arrangement for bearing and braking of wheel of vehicle, has screw connection that is provided with screw bolt, where screw bolt is provided with screw shaft
    DE102010020525A1|2011-11-17|Residual pressure holding valve, particularly for hydro-pneumatic spring strut of motor vehicle, has valve housing with air inlet and air outlet and valve body that is arranged in valve housing
    DE10120324B4|2005-11-17|Electropneumatic double control valve with a sealing arrangement
    同族专利:
    公开号 | 公开日
    AT518866B1|2018-02-15|
    EP3464014B1|2020-07-01|
    EP3464014A1|2019-04-10|
    WO2018036969A1|2018-03-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    AT502761A3|2005-10-04|2009-03-15|Siemens Transportation Systems|SUPPORT FOR RAIL VEHICLES|
    ES2547431T3|2011-06-29|2015-10-06|Bombardier Transportation Gmbh|Undercarriage for rail vehicle with pneumatic spring device|
    DE112013002072B4|2012-04-17|2017-02-23|Hitachi, Ltd.|Rail vehicle body structure|FR3078671B1|2018-03-07|2020-11-27|Alstom Transp Tech|RAILWAY VEHICLE INCLUDING A CAST IRON LOAD CROSSBODY|
    法律状态:
    2019-09-15| PC| Change of the owner|Owner name: SIEMENS MOBILITY GMBH, AT Effective date: 20190814 |
    2021-12-15| HC| Change of the firm name or firm address|Owner name: SIEMENS MOBILITY AUSTRIA GMBH, AT Effective date: 20211108 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50759/2016A|AT518866B1|2016-08-23|2016-08-23|Air supply for an air spring of a rail vehicle|ATA50759/2016A| AT518866B1|2016-08-23|2016-08-23|Air supply for an air spring of a rail vehicle|
    PCT/EP2017/071038| WO2018036969A1|2016-08-23|2017-08-21|Air feed for an air spring of a rail vehicle|
    EP17761035.9A| EP3464014B1|2016-08-23|2017-08-21|Air feed for an air spring of a rail vehicle|
    [返回顶部]