EP2250062A1 - Crash-resistant front apron for a rail vehicle - Google Patents
Crash-resistant front apron for a rail vehicleInfo
- Publication number
- EP2250062A1 EP2250062A1 EP08873211A EP08873211A EP2250062A1 EP 2250062 A1 EP2250062 A1 EP 2250062A1 EP 08873211 A EP08873211 A EP 08873211A EP 08873211 A EP08873211 A EP 08873211A EP 2250062 A1 EP2250062 A1 EP 2250062A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier part
- front bumper
- front apron
- bumper according
- crash
- 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
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000003825 pressing Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 230000008439 repair process Effects 0.000 description 9
- 239000011152 fibreglass Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000009420 retrofitting 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
- B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
- B61D15/06—Buffer cars; Arrangements or construction of railway vehicles for protecting them in case of collisions
-
- 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
- B61D17/06—End walls
Definitions
- the invention relates to a crashworthy front apron for a rail vehicle having a front apron flap, which is fastened by means of support to the shell of the rail vehicle.
- Car body substructure of the rail vehicle is also referred to below as shell.
- Vehicle head are fixed in the front area laterally each by a pivot joint.
- the pivot joint is arranged at a side facing away from the bow end of the apron. If the Clutch block performs a lateral pivoting movement during cornering, these skirts are folded laterally outwards, so that the pivotal movement of the clutch block is left room.
- springs provide for the swinging back of the wing, so that the outer contour of the carriage profile is closed again flush.
- plastic is used not only for cover elements but also in the manufacture of the shell.
- the vehicle head of a modern rail vehicle can be manufactured in its entirety as a self-supporting plastic structure.
- the plastic is reinforced with fibers.
- GFP glass fiber reinforced plastic
- Metal structure - a longer repair time and is also expensive and expensive.
- the invention proposes a front apron, in which, in the event of a crash, the front apron flap together with a part of the carrying device is simply thrown off, so that the power flow for anchoring to the body substructure is interrupted.
- the discharge takes place so that the impact energy can cause no damage to the plastic structure of the vehicle head.
- only a comparatively much smaller, uncritical proportion of the impact energy reaches the supporting structure of the vehicle head.
- the ejection is effected by a slip-clutch release mechanism which is arranged between a first and a second carrier part.
- Preferred is an arrangement in which the support device in a side facing away from the bow side of the front apron flap is arranged.
- This arrangement corresponds, as already mentioned, the hitherto conventional arrangement of the support device with a pivoting front apron flap.
- the advantage arises in particular from the fact that in the case of a retrofit previously used support device can be easily replaced by the inventive two-part design of the carrier together with slip clutch release mechanism. The cost of retrofitting a rail vehicle with crash-prone aprons is low.
- first carrier part, the second carrier part together with the friction clutch and release mechanism therebetween are arranged along a vertical axis and this arrangement is suspended from the underside of the shell.
- a construction is advantageous in which the rotation of the first carrier part is guided in the other, second carrier part, preferably by a guide pin in a corresponding receptacle.
- the slip clutch trip mechanism may have clutch flanges where the friction forces can be calculated very well. This means that in the event of a crash by a predetermined contact pressure of the coupling flanges, possibly also by a corresponding formation of the roughness of the friction surfaces, the triggering threshold can be structurally specified so that the separation between the two support parts sure so that the plastic underbody structure of the vehicle head is not damaged. At the same time it can be ensured that at apron-free ride, in which the frictional connection should keep as stable as possible, the front apron does not loosen.
- the contact pressure means are designed so that the contact pressure is adjustable.
- the tripping threshold can be preset at the factory or, if necessary, readjusted during maintenance work.
- a simple construction can be designed so that slots and bores are formed on the coupling flanges. In undisturbed normal operation are each facing a slot and a hole. Through each slot with associated hole a pressing means, for example, a screw inserted and provided at the end with a nut. In terms of design, the rotational position is thus predetermined in a simple manner in which the separation is to take place in the event of a crash.
- the slots can simply be designed as elongated holes milled into the peripheral contour.
- the application of the contact pressure can also be supported by a spring element, such as a coil spring or a plate spring.
- a favorable embodiment may be characterized in that known return means, which bring the Bugschürzenklappe from a swung-out position back to an outer skin flush position, in the event of a crash to be used to generate from the collision force the torque that the desired separation process between the Carrier parts causes.
- known return means which bring the Bugschürzenklappe from a swung-out position back to an outer skin flush position, in the event of a crash to be used to generate from the collision force the torque that the desired separation process between the Carrier parts causes.
- Known gas springs are suitable for this purpose.
- the return means may be a spring means which, however, in the event of a crash, viewed in the longitudinal direction, acts as a rigid body in one direction and transmits in this direction either a tensile force or a compressive force to the first carrier part.
- Separation of the two support members can be achieved in particular when the friction surfaces are arranged obliquely to the longitudinal axis of the rail vehicle with respect to the vertical axis of the rail vehicle by an angle of about 75 °.
- FIG. 1 shows a vehicle head of a rail vehicle of new construction in a three-dimensional representation
- Figure 2 is a rail vehicle and a car in one
- FIG. 3 shows a rail vehicle after a collision with a collision force introduced obliquely from the front and a laterally deformable bow area, seen in a sketch from above;
- Figure 4 shows a front apron with a supporting device according to the prior art, shown schematically in a side and top view;
- Figure 5a is a sketch of a front apron according to the invention without the action of a collision force in a side and top view;
- FIG. 5b shows the front apron according to the invention according to FIG. 5a under the influence of a collision force in a side and top view;
- FIG. 5c shows the front apron according to the invention according to FIG. 5a in the state after the collision, in which the carrier parts are separated, in a side and top view;
- Figure 6a is a side and plan view of the coupling flange of the first support member;
- Figure 6b is a side and plan view of the coupling flange of the second carrier part
- Figure 6c is a side and top view of the first and second support member in an assembled
- FIG. 7 shows an embodiment of the invention
- FIG. 8 shows the front apron according to the invention according to FIG. 7, viewed in the direction of the bug
- Figure 9 is a perspective view of the second carrier part
- Figure 10 is a perspective view of the first carrier part.
- FIG. 1 shows in a three-dimensional representation a vehicle head 1 of a rail vehicle whose outer contour is covered by aprons 2, 3, 4 in the area towards the roadway.
- plastic is used nowadays not only in the production of the cover, or in the area of the bow 7 laterally arranged, pivoting front apron door 23, but also in the production of the vehicle head 1.
- the scenario of a collision of a rail vehicle 5 with a car 6 is outlined in FIGS. 2 and 3. Due to the force occurring in the event of a crash (arrow 21), it may not only damage the lateral Bugschürzenklappe 23, but by the force transmission of the
- Front apron 23 on the self-supporting plastic structure of the vehicle head 1 can cause considerable damage.
- the conventional attachment of the front apron 2 is sketched on the shell 16 of a car body underframe.
- the collision force (acting from left on the front apron flap 23 in FIG. 4) is transmitted to the shell 16 without damping and weakening by the rigid construction of the carrier device 8.
- FIGS. 5a, 5b and 5c show, in a schematic representation, the crashworthy configuration of the front apron 2 according to the invention. It prevents inadmissible high impact load from being transmitted to the structure of the shell 16 in the event of a crash:
- FIG. 5a shows the unloaded case.
- the crashworthy front apron 2 consists essentially of a support device 8, which is attached from a first support member 9 to which a front apron flap 23 is attached, and a second support member 10 which is fixed to the shell 16 and the carbody substructure. Between the first support part 9 and the second support part 10, a slip clutch release mechanism 11 is arranged.
- FIG. 5b the surface force acting on the front apron flap 23 in the event of a crash is indicated by a Arrow 21 indicated.
- a torque acts around the axis 13.
- the first support member 9 rotates with respect to the frame-mounted second support member 10th
- the friction coupling flanges 30 formed on the first carrier part 9 and on the second carrier part 10 are drawn in detail in a side view and in an axial plan view, respectively.
- the first carrier 9 has a guide pin 12
- the second carrier 10 has a corresponding bore 29.
- each of these coupling flanges 30 has slots 14 which extend from the outer contour into an oblong shape into the flange.
- the two coupling flanges 30 by means of bolts and nuts 15, which are inserted respectively in a slot 14 and in a bore 27, frictionally held together. Due to the structural design of the friction surfaces 25 and 24 and the contact force generated by the screw connection 15, a defined "Abschermoment" can be adjusted.
- FIG. 7 and in FIG. 8 a lateral front apron 2 arranged on the left in the bowing direction is shown in FIG Embodiment of the present invention can be seen in each case in a perspective view.
- the figure 7 shows seen from the center of the car in a viewing direction opposite to the bow direction 28, the front apron invention 2 on the inside of the front apron flap 23, the lower support member 9 is fixed by screws.
- the second support part 10 is mounted by four screws 15.
- the second carrier part 10 is screwed to the shell 16 (not shown in Figure 7) of the vehicle head.
- Under the support device 9,10 a cam contour 20 can be seen, which is also attached to the inside of the front apron flap 23. At this cam contour 20 presses in a cornering of the coupling block (not shown in Figure 7).
- Figure 8 also shows a view of the inner surface of the front apron flap 23, seen here obliquely left in the direction 28 of the bow.
- the retrieving the unfolded front apron flap 23 is effected by two gas pressure springs 18.
- These gas springs 18 are hinged at one end to the first support member 9 and at its other end to the inner surface of the front apron flap 23.
- the gas pressure springs 18 When the gas pressure springs 18 are in a position in which the front apron flap 23 is flush with the outer contour, the gas pressure springs 18 have reached their maximum length. When stretched, they act in a way this operating position as a rigid body.
- the traction spring-loaded gas springs 18 in case of a collision, the surface force 21 is applied to the nose panel flap 23 which are hinged to the lower beam 9 will generate a torque about the axis 13 (shown in FIG the direction of the torque indicated by arrow 22). As soon as this torque 22 exceeds the static friction between the friction surfaces 24, 25 of the coupling flanges 30, the first carrier part 9 begins with respect to the second carrier part 10 about the axis
- the separation mechanism is designed so that it separates the force flow so early in a collision that the plastic fiber composite remains undamaged.
- the second carrier part 10 and, in FIG. 10, the first carrier part 9 can be seen enlarged in a perspective view.
- the second support member 10 When assembling the second support member 10 is rotated by 180 ° placed on the first support member 9, so that the guide pin 12 engages in the corresponding recess 29 and the two friction surfaces 24 and 25 abut each other.
- the contact force between the friction surfaces 24, 25 is, as already explained above, by means of screws and nuts 15 (FIGS. 7 and 8). causes each through one of the four holes 27 and through one of the four corresponding slots 14 are inserted therethrough.
- two holes 27 and two slots 14 are formed in each case.
- the slots 14 are designed as elongated holes which extend along approximately a circular arc and are open to the outer contour of the coupling flange 30.
- the length of the slots 14, the angle of rotation is predetermined, which is required in the event of a crash to separate the two parts 9 and 10.
- a defined "Abschermoment” can be achieved as already said by the structural design of the friction surfaces 24, 25 and by the tightening torque of the screw connection.
- the pivot axis 19 can be seen very well, on which the front apron flap 23 is articulated.
- FIGS. 7 and 8 show an embodiment of the invention in which the return means 18, which in the event of a crash transmit the torque to the first carrier part 9, viewed in the direction of the bow, are arranged in front of the carrier parts 9, 10. But it is also conceivable that the return means 18 seen in the bow direction 28, after the support members 9, 10 are arranged; In this case, the spring means 18 act when issued Bugschürzenklappe 23 as a tension spring.
- the return means 18 are here such that they are not further collapsible in their position in which the front apron flap 23 is flush-mounted, ie they act here in the event of a crash not as tie rods, but as push rods.
- a torque according to arrow 22 is generated in this variant, in the event of a crash.
- the trigger threshold relatively short of the maximum operating load at which the front apron flap is still stable to be supported on the substructure. This minimizes the overload on the underlying structure.
- An essential advantage of the invention results from the fact that the collision forces acting on the car substructure of a self-supporting vehicle head in the event of a crash are easy to estimate.
- the repair and uptime of the rail vehicle can be kept low. Complex repair and high repair costs on the substructure of the rail vehicle can be avoided.
- Another advantage is the fact that already in operation rail vehicles can be retrofitted with the front apron invention with little effort.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Transportation (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT3892008 | 2008-03-12 | ||
PCT/EP2008/065649 WO2009112095A1 (en) | 2008-03-12 | 2008-11-17 | Crash-resistant front apron for a rail vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2250062A1 true EP2250062A1 (en) | 2010-11-17 |
EP2250062B1 EP2250062B1 (en) | 2014-12-31 |
Family
ID=40419059
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08873211.0A Active EP2250062B1 (en) | 2008-03-12 | 2008-11-17 | Crash-resistant front apron for a rail vehicle |
Country Status (3)
Country | Link |
---|---|
US (1) | US8375869B2 (en) |
EP (1) | EP2250062B1 (en) |
WO (1) | WO2009112095A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1755300A2 (en) | 2002-07-05 | 2007-02-21 | British Broadcasting Corporation | Synchronisation in multicarrier receivers |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010023318A1 (en) * | 2010-06-10 | 2011-12-15 | Voith Patent Gmbh | Device for pivoting one or more nose flaps of a track-guided vehicle and Bugklappenmodul |
RU2558400C2 (en) * | 2010-09-20 | 2015-08-10 | Бомбардир Транспортацион Гмбх | Light composite structure of rail vehicle cabin |
RU2014109777A (en) * | 2011-08-17 | 2015-09-27 | Войс Патент Гмбх | DEVICE FOR TURNING ONE OR MORE FRONT FOLDING COVERS OF ROTARY VEHICLE |
DE102013224470A1 (en) * | 2013-11-29 | 2015-06-03 | Voith Patent Gmbh | Rail vehicle nose flap and rail vehicle with it |
DE102016210514B3 (en) * | 2016-06-14 | 2017-08-24 | Siemens Aktiengesellschaft | Multi-part apron for a vehicle |
CN107628043B (en) * | 2017-09-21 | 2020-04-28 | 中车株洲电力机车有限公司 | Rail vehicle apron board and mounting method |
DE102018109236A1 (en) * | 2018-04-18 | 2019-10-24 | Bombardier Transportation Gmbh | Front hood for a rail vehicle car, method for assembling at least one front hood and rail vehicle car with at least one front hood |
CN113060168A (en) * | 2019-12-16 | 2021-07-02 | 中车唐山机车车辆有限公司 | Apron board limiting device of rail train and rail train |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2319061C3 (en) | 1973-04-14 | 1980-01-31 | Linke-Hofmann-Busch, Waggon-Fahrzeug- Maschinen Gmbh, 3320 Salzgitter | Apron flap for the outer cladding of a rail vehicle |
DE3818839A1 (en) | 1988-06-03 | 1989-12-07 | Messerschmitt Boelkow Blohm | RAIL VEHICLE |
DE3931171A1 (en) | 1988-06-03 | 1991-04-04 | Messerschmitt Boelkow Blohm | Tram car with central coupler buffer - has pairs of guide faces in opposite transverse directions, each with one force transmission side |
CZ905888A3 (en) | 1988-12-30 | 1993-04-14 | Skoda Kp | Device for the reduction of aerodynamic resistance of a vehicle |
DE4415793A1 (en) | 1994-05-05 | 1995-11-09 | Ammendorf Waggonbau | Access apron for underbody equipment of high speed rail vehicles |
DE4445182C1 (en) | 1994-12-17 | 1995-12-21 | Bergische Stahlindustrie | Railcar coupling block with bilateral anchor plates |
US6158356A (en) * | 1997-02-10 | 2000-12-12 | Gec Alsthom Transport Sa | Energy absorber device having a parallelepiped shape for absorbing impacts to a vehicle |
DE19714118C1 (en) | 1997-04-05 | 1998-09-03 | Daimler Benz Ag | Attachment, in particular bumper, of a motor vehicle |
US6196135B1 (en) * | 1998-04-17 | 2001-03-06 | Kinki Sharyo Co., Ltd. | Shock absorbing underframe structure for railroad car |
DE19956856A1 (en) * | 1999-11-25 | 2001-05-31 | Siemens Duewag Gmbh | Rail vehicle, especially for passenger conveyance on outer suburban rail services, has shock absorber units supported on deformable sandwich construction containing foam metal and supporting section of footplate of driver's cab |
AT408874B (en) * | 2000-02-18 | 2002-03-25 | Siemens Sgp Verkehrstech Gmbh | DEFORMING ELEMENT FOR A RAIL VEHICLE |
JP2002096728A (en) | 2000-09-25 | 2002-04-02 | Tokyu Car Corp | Operator room structure for rail road vechicle |
JP4943905B2 (en) * | 2006-05-10 | 2012-05-30 | 株式会社日立製作所 | Collision energy absorbing device and rail vehicle equipped with the same |
-
2008
- 2008-11-17 EP EP08873211.0A patent/EP2250062B1/en active Active
- 2008-11-17 WO PCT/EP2008/065649 patent/WO2009112095A1/en active Application Filing
- 2008-11-17 US US12/921,405 patent/US8375869B2/en active Active
Non-Patent Citations (1)
Title |
---|
See references of WO2009112095A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1755300A2 (en) | 2002-07-05 | 2007-02-21 | British Broadcasting Corporation | Synchronisation in multicarrier receivers |
Also Published As
Publication number | Publication date |
---|---|
US20110011302A1 (en) | 2011-01-20 |
WO2009112095A1 (en) | 2009-09-17 |
US8375869B2 (en) | 2013-02-19 |
EP2250062B1 (en) | 2014-12-31 |
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