EP4139181A1 - Method for producing a large component of a vehicle body - Google Patents
Method for producing a large component of a vehicle bodyInfo
- Publication number
- EP4139181A1 EP4139181A1 EP21721862.7A EP21721862A EP4139181A1 EP 4139181 A1 EP4139181 A1 EP 4139181A1 EP 21721862 A EP21721862 A EP 21721862A EP 4139181 A1 EP4139181 A1 EP 4139181A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- light metal
- large component
- chamber
- opening
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 53
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 5
- 238000003801 milling Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/041—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures with bodies characterised by use of light metal, e.g. aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
- B61D17/08—Sides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/18—Floors
- B64C1/20—Floors specially adapted for freight
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Definitions
- the invention relates to a method for producing a large component of a vehicle body, in particular a rail vehicle, in an integral construction, and a light metal profile.
- Rail vehicles in particular passenger rail vehicles, are often manufactured in what is known as an integral construction, in which a plurality of light metal profiles are connected to one another to form large components such as side walls, underframes, roofs, etc.
- this type of production offers the advantage of designing fastening points as an integral part of the light metal profiles, for example so-called C-rails for receiving slot nuts can be integrated in the light metal profiles, so that these fastening means can be dispensed with.
- C-rails are also known as so-called T-slots.
- the large components constructed in this way are usually extensively machined after the welding process, for example to produce the window openings. It is customary to have sections protruding from the profiles, for example also C-rails, which are subsequently not needed to remove again. However, the quality of the profile surface in these areas is not suitable for use as a visible surface after removal, so that extensive reworking such as sanding must be carried out. If C-rails protrude from the profile, this is associated with disadvantages, in particular the installation space requirement of the components attached to the C-rail increases, since the height of the C-rail has to be added to the dimensions of the component. Furthermore, heavily loaded components introduce a torque into the profile, which must be taken into account when dimensioning the profile.
- Another disadvantage is that there is only a small contact surface of the component on the C-rail itself.
- special fastening means can be arranged on the profiles, for example blind rivet nuts or threaded inserts.
- the flexibility of fastening by means of C-rails is lost and complex manual work steps are required.
- any manufacturing tolerances that occur in connections to blind rivet nuts or threaded inserts must only be compensated for on the fastened component, which results in additional volume and weight in the component through compensation options.
- C-rails Another possibility for avoiding individual disadvantages of a C-rail protruding from the profile provides recessed C-rails, which are arranged within the profile, only the opening of the C-rail being visible. Such internal (recessed) C-rails cannot be used on visible surfaces either, or they have to be closed or covered in a complex manner.
- Another major disadvantage of internal C-rails is the difficult end-face connection of such profiles to other profiles, since there is a weld seam in the area of the internal C-rails is to be interrupted or a cover is to be welded in. This work, which is essentially to be carried out manually, makes the manufacture of a rail vehicle more complicated and expensive. What is sought is a way of fastening components to car bodies of rail vehicles which offers the flexibility of mounting on C-rails without the disadvantages associated therewith.
- the invention is therefore based on the object of specifying a method for producing a large component of a vehicle body in an integral design, in which components can be attached to conventional C-rails without weakening the structure of the large component as is necessary with conventional methods.
- a method for producing a large component of a vehicle body in an integral design is described, the large component being made up of a plurality of non-detachably connected light metal profiles, and a production step being the opening of a profile chamber arranged directly under a cover surface of a light metal profile along the longitudinal extent of the Provides profile chamber, the width of the opening produced is smaller than the inner width of the profile chamber.
- Another advantage of the invention is that, even after a car body has been completed and also when vehicles are in operation, corresponding assembly options can be created. Only local opening of a recessed profile chamber is required, which means that components can be retrofitted. For example, attachment points for ticket machines, handrails, displays, etc. can be created subsequently. For example, roof attachments such as antennas can be retrofitted on the outside.
- the manufacturing process for the manufacture of a car body comprises the permanent connection of a plurality of light metal profiles, usually by means of welding.
- a plurality of (also differently shaped) profiles are connected to one another in parallel or orthogonally.
- machining operations are typically carried out on the connected profiles, for example bores and millings for cable routing within the profiles or for the production of window cutouts.
- the method according to the invention provides as an additional production step the opening of a profile chamber arranged directly under a cover surface of a light metal profile along the longitudinal extent of the profile chamber before, the width of the opening produced in the process is smaller than the inner width of the profile chamber.
- the light metal profiles used for the production of a large component are produced by means of an extrusion process. This method means that the profiles have the same cross section over their entire length. Typically, these profiles have a rectangular cross-section with two parallel top surfaces, triangular chambers closed between these top surfaces to increase stability and means for connecting to adjacent profiles, depending on the connection method used. For example, these connection means can be designed differently with regard to arc welding and friction stir welding.
- C-rails are designed as moldings on a top layer or sunk.
- the opening of a recessed C-rail also extends over the entire length of the profile due to the manufacturing process and thus largely over points where no C-rail is necessary.
- a specially shaped light metal profile is therefore proposed for the production method according to the invention, which provides a countersunk C-rail with a closed opening.
- a C-rail is arranged directly under a cover layer of the profile and represents a closed one Hollow chamber, which extends over the entire length of the profile.
- the profile can be produced in a conventional manner by means of an extrusion process, for which only the respective press die has to be designed accordingly.
- the manufacturing process now provides for the removal of the top surface of the profile above the recessed hollow chamber; it is essential that the width of the opening produced is less than the inside width of the profile chamber.
- the C-rail sunk into the light metal profile with a closed opening is designed as a closed hollow chamber, that is to say has no openings to further chambers in the light metal profile. Fire protection in a vehicle is improved in this way, since it slows down the spread of fire and prevents a fire from spreading along further hollow chambers in the profile and slows down burning through the other top surface of the light metal profile.
- a slot nut to be introduced into the C-rail is held in the C-rail in a form-fitting manner, but can be displaced along the longitudinal extension of the C-rail.
- the dimensions of the hollow chamber to be used as a C-rail is to be dimensioned with regard to the size of the slot nuts to be introduced.
- measuring means can automatically detect these centering devices and control the production of the opening accordingly.
- all features can be used which can be produced during the production process of the profile, that is to say extend with a constant cross section over the entire length of the profile. It can for example, linear formations or notches can be used.
- Notches in particular are advantageous for this purpose, since they do not protrude from the top surface of the profile and there is thus a significantly lower probability of damage during storage and transport of the profile.
- This is particularly advantageous because, in general, profile parts protruding from the top surface should be avoided in order to be able to avoid damage to these parts and to be able to ensure easier transport and stackability of the profiles.
- the use of a profile according to the invention with a concealed profile chamber ensures these properties, so that the use of a notch as a centering device is particularly advantageous.
- the present invention is suitable for the production of all vehicles that are made in integral construction from light metal profiles, in particular for the production of rail vehicles, since a larger number of C-rails are usually provided on these for the attachment of technical equipment or interior fittings.
- Fig. 1 Light metal profile with recessed C-rail, partly open.
- Fig. 2 Light metal profile with recessed C-rail - section.
- Fig. 3 Light metal profile with recessed C-rail, partly open - view.
- Fig. 4 Light metal profile with attached C-rail.
- FIG.l shows an example and schematically
- Light metal profile with a recessed, partially open C-rail A light metal profile 1 is shown, as it is when building a large component of a
- a light metal profile 1 is inextricably connected to one another with a plurality of further profiles which have the same or different cross-sections. Further profiles are not shown in Fig.l to simplify the representation.
- the light metal profile 1 is designed as a closed hollow profile with a rectangular cross section.
- a closed profile chamber 3 is arranged under a cover layer 2 of the light metal profile 1, which chamber has a cross section which is designed to accommodate a groove note. This assumes that a sliding block to be introduced into the profile chamber 3 is slidably mounted therein and secured against twisting and jamming.
- an opening 4 is made, which breaks through the cover layer 2 in the middle of the profile chamber 3.
- FIG.l shows an application in which the concealed profile chamber 3 is opened only over a certain longitudinal section of the light metal profile 1.
- the top layer 2 remains in the remaining section untouched, so that the strength of the light metal profile is not reduced and the surface of a large component constructed in this way is not perforated and, if necessary, can be used as a visible surface without further measures.
- FIG. 2 shows an example and schematically a light metal profile with a recessed C-rail in a sectional view.
- the light metal profile 1 from FIG. 1 is shown in a sectional view normal to the longitudinal extension of the light metal profile 1.
- the cutting plane is laid through a section in which the profile chamber 3 is not open.
- Light metal profile with a recessed, partially open C-rail in a normal view It is a view of the top surface 2 of a light metal profile 1, as shown in Fig.l is shown.
- the opening 4 extends over a certain longitudinal section of the light metal profile 1. In the embodiment shown, the opening 4 begins at one end of the light metal profile 1;
- Such last-mentioned versions require measures for introducing a slot nut or specially shaped fastening means.
- a light metal profile 5 according to the prior art is shown, which comprises an attached C-rail 6.
- a section of the C-rail 6 has been removed, which is typically done by means of milling.
- This remaining section 7 is then to be removed by grinding, which is typically done manually. Since damage to the surface can hardly be avoided, the light metal profiles 5 treated in this way have to be cemented, sanded and painted before being used as a visible surface.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50334/2020A AT522977B1 (en) | 2020-04-20 | 2020-04-20 | Process for the production of a large component of a vehicle body |
PCT/EP2021/059670 WO2021213860A1 (en) | 2020-04-20 | 2021-04-14 | Method for producing a large component of a vehicle body |
Publications (1)
Publication Number | Publication Date |
---|---|
EP4139181A1 true EP4139181A1 (en) | 2023-03-01 |
Family
ID=75657727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21721862.7A Withdrawn EP4139181A1 (en) | 2020-04-20 | 2021-04-14 | Method for producing a large component of a vehicle body |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4139181A1 (en) |
AT (1) | AT522977B1 (en) |
WO (1) | WO2021213860A1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201224406Y (en) * | 2008-06-20 | 2009-04-22 | 长春轨道客车股份有限公司 | Connection structure of end lower part and lower hinge apparatus of aluminum alloy vehicle body low floor light rail vehicle |
DE102010036517B4 (en) * | 2010-07-20 | 2014-07-10 | Bombardier Transportation Gmbh | Floor for vehicles with hollow profiles for attachment, as well as vehicle with floor |
DE102012209049A1 (en) * | 2012-05-30 | 2013-12-05 | Siemens Aktiengesellschaft | Car body construction for vehicles |
DE102012221564A1 (en) * | 2012-11-26 | 2014-05-28 | Siemens Aktiengesellschaft | Car body part |
DE102013111903B3 (en) * | 2013-10-29 | 2014-12-24 | Bombardier Transportation Gmbh | Fastening device for a transitional profile in a railway vehicle, kit for a fastening device and method for attaching a transitional profile |
AT516921B1 (en) * | 2015-03-10 | 2017-03-15 | Siemens Ag Oesterreich | Arrangement for fastening a coupling element to a car body of a vehicle |
WO2017093297A1 (en) * | 2015-12-02 | 2017-06-08 | Siemens Ag Österreich | Hollow profile |
AT520978B1 (en) * | 2018-02-21 | 2019-11-15 | Siemens Ag Oesterreich | Method for producing a rail vehicle component from light metal hollow sections |
-
2020
- 2020-04-20 AT ATA50334/2020A patent/AT522977B1/en active
-
2021
- 2021-04-14 WO PCT/EP2021/059670 patent/WO2021213860A1/en unknown
- 2021-04-14 EP EP21721862.7A patent/EP4139181A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AT522977A4 (en) | 2021-04-15 |
WO2021213860A1 (en) | 2021-10-28 |
AT522977B1 (en) | 2021-04-15 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20220927 |
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AK | Designated contracting states |
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DAX | Request for extension of the european patent (deleted) | ||
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18D | Application deemed to be withdrawn |
Effective date: 20230610 |