EP2500232B1 - Gewichtsreduzierter Fahrgestellrahmen für ein Schienenfahrzeug - Google Patents

Gewichtsreduzierter Fahrgestellrahmen für ein Schienenfahrzeug Download PDF

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Publication number
EP2500232B1
EP2500232B1 EP20110158515 EP11158515A EP2500232B1 EP 2500232 B1 EP2500232 B1 EP 2500232B1 EP 20110158515 EP20110158515 EP 20110158515 EP 11158515 A EP11158515 A EP 11158515A EP 2500232 B1 EP2500232 B1 EP 2500232B1
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EP
European Patent Office
Prior art keywords
wall element
running gear
transverse beam
gear frame
wall
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.)
Not-in-force
Application number
EP20110158515
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English (en)
French (fr)
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EP2500232A1 (de
Inventor
Detlef Müller
Matthias Kwitniewski
Igor Geiger
Paul Gier
Heiko Mannsbarth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alstom Transportation Germany GmbH
Original Assignee
Bombardier Transportation GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bombardier Transportation GmbH filed Critical Bombardier Transportation GmbH
Priority to EP20110158515 priority Critical patent/EP2500232B1/de
Priority to ES11158515.4T priority patent/ES2470331T3/es
Priority to CN2012100692592A priority patent/CN102673598A/zh
Publication of EP2500232A1 publication Critical patent/EP2500232A1/de
Application granted granted Critical
Publication of EP2500232B1 publication Critical patent/EP2500232B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
    • B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
    • B61F5/50—Other details
    • B61F5/52—Bogie frames

Definitions

  • the present invention relates to a running gear frame for a rail vehicle, comprising two longitudinal beams and at least one transverse beam, the beams forming a substantially H-shaped configuration defining a longitudinal direction, a transverse direction and a height direction.
  • the transverse beam provides a structural connection between the longitudinal beams in said transverse direction.
  • at least one of the beams and/or at least one further structural component of the running gear frame is formed by a plurality of wall elements.
  • Such a type of running gear frame is disclosed by GB 384 036 A , US 2 090 498 A or EP 0 564 423 A1 .
  • the present invention further relates to a running gear comprising such a running gear frame and to a rail vehicle comprising such a running gear.
  • Modern rail vehicles in particular, high speed rail vehicles, typically use such running gears which have to meet a variety of different, partially contradictory requirements to meet the goal of providing good riding comfort at high speeds while consuming as few energy as possible.
  • high running speeds at the level of the running gear, require a very robust structure, in particular, of the running gear frame, adapted to take the considerable dynamic loads occurring, running stability at such high speeds is beneficially influenced by a comparatively low mass of the components of the running gear.
  • the present invention is based on the technical teaching that improvement of the dynamic behavior of the running gear, in particular, at high speeds, may be achieved at sufficient structural stability while at the same time reducing overall energy consumption of the vehicle if the running gear is reduced in weight while at the same time keeping its structural stability by using weight reduced but structurally equivalent components for the running gear frame.
  • This is achieved by using at least one (preferably more) weight reduced wall element(s) for the running gear frame showing at least one (otherwise nonfunctional) weight reduction recess at a less mechanically stressed location.
  • the weight reduction of the running gear frame achieved by this means is not only beneficial in terms of the overall energy consumption it is also advantageous in terms of the running stability at high speeds where a low moment of inertia, in particular about the yaw axis (i.e. the height axis) of the running gear is favorable.
  • the present invention relates to a running gear frame for a rail vehicle, comprising two longitudinal beams and at least one transverse beam, the beams forming a substantially H-shaped configuration defining a longitudinal direction, a transverse direction and a height direction, the transverse beam providing a structural connection between the longitudinal beams in the transverse direction.
  • At least one of the beams and/or at least one further structural component of the running gear frame is formed by a plurality of wall elements, at least one of the wall elements being a weight reduced wall element showing at least one otherwise nonfunctional weight reduction recess at a less mechanically stressed location.
  • the less mechanically stressed location is a location where, in a reference wall element and under any load collective to be expected under normal operation of the rail vehicle unit, a reference stress occurs that is less than 5% of a maximum reference stress (that occurs in the reference element).
  • the reference stress is less than 10%, more preferably less than 15% to 20%, of the maximum reference stress.
  • the reference wall element apart from having a continuous, recess-free wall design, is substantially identical to the corresponding wall element of the transverse beam showing the weight reduction recess and replaces this recessed wall element.
  • the maximum reference stress is a maximum mechanical stress occurring in the reference wall element under the respective one of the load collectives.
  • the reference stress and the maximum reference stress both are considered for the same load collective, i.e. at the same loading situation of the running gear frame, such that different maximum reference stresses may have to be considered depending on the loading situation.
  • certain locations may fulfill the requirements for being identified as a less mechanically stressed location under a first load collective (to be expected under normal operation of the vehicle and, hence, to be considered), these conditions may not be met under a further, different load collective (also to be expected under normal operation and, hence, also to be considered).
  • the specific location does not qualify as such a less mechanically stressed location in the sense of the present invention, and, hence, no recess is placed at this location.
  • only those load collectives will have to be considered wherein maximum stresses are to be expected during normal operation of the vehicle.
  • weight reduction recess typically, insofar distinguishes from other conventional recesses within components or wall elements as its single purpose is the weight reduction achieved. Hence, for this reason, such a weight reduction recess distinguishes from other recesses eventually present for (typically imperatively) providing access to another component of the vehicle or for immediately receiving further components of the vehicle.
  • the at least one weight reduced wall element is an upper wall element and/or a lower wall element of the transverse beam.
  • the at least one weight reduced wall element is an inner reinforcement wall element of the transverse beam such as, for example, the one confining the receptacle for the traction linkage element has outlined above.
  • the at least one weight reduced wall element is a support element of a lateral stop element of the transverse beam such as, for example, the one as outlined above.
  • the at least one further structural component may be a drive support unit for a drive unit of the running gear (e.g. a motor and/or a gear box etc.), the at least one weight reduced wall element being a wall element of the drive support unit.
  • a drive unit of the running gear e.g. a motor and/or a gear box etc.
  • the at least one weight reduced wall element being a wall element of the drive support unit.
  • the drive support unit comprises at least one drive support arm adapted to support the drive unit, the at least one weight reduced wall element being a wall element of the drive support arm, in particular, a web element of the drive support arm.
  • the drive support unit comprises at least one drive interface element adapted to form a support interface for the drive unit, the at least one weight reduced wall element being a wall element of the drive interface element, in particular, a hook-shaped element of the interface element.
  • the at least one further structural component is a brake support unit for a brake unit, the at least one weight reduced wall element being a wall element of the brake support unit.
  • the brake support unit comprises at least one brake support arm adapted to support the drive unit, the at least one weight reduced wall element being a wall element of the brake support arm, in particular, a web element of the brake support arm.
  • the brake support unit comprises at least one brake interface element adapted to form a support interface for the brake unit, the at least one weight reduced wall element being a wall element of the brake interface element, in particular, a hook-shaped element of the interface element.
  • the transverse beam is formed by a front wall element, a rear wall element, an upper wall element and a lower wall element, wherein, in the area of the transverse beam, the structural connection between the longitudinal beams being exclusively provided via the front wall element, the rear wall element, the upper wall element and the lower wall element.
  • a single transverse beam of suitable design further reduces the weight.
  • Structural stability of such a single transverse beam generally may be achieved by any suitable means.
  • the weight reduced wall elements may have any suitable configuration.
  • at least single ones of these wall elements may be formed as sandwich elements comprising two or more layers.
  • a favorably space-saving and easily manufactured configuration and is achieved if the front wall element and/or the rear wall element are exclusively formed by a sheet metal element. This is particularly the case if the sheet metal element is a single layer element easing manufacture considerably.
  • connection between the wall elements may be achieved by any suitable means.
  • the at least one weight reduced wall element is connected to another one of the wall elements using a welding process.
  • the at least one weight reduced wall element may be a cast element.
  • the transverse beam has a centrally located receptacle, the receptacle, in particular, comprising an interface element for a traction linkage element adapted to connect a supported vehicle component and the running gear frame in the longitudinal direction.
  • the transverse beam in the region of the centrally located receptacle, has a longitudinally salient section within at least one of a front wall section and a rear wall section.
  • Such a salient section (in particular, if this wall section is also supporting or forming the interface to the traction linkage element) not only improves the introduction and support of the loads within the transverse beam, it furthermore locally provides more space for receipt of the traction linkage element while keeping the remainder of the transverse beam compact.
  • the salient section in the longitudinal direction, provides a maximum longitudinal distance between the front wall section and the rear wall section which is 105% to 130% of a minimum longitudinal distance between the front wall section and the rear wall section.
  • a value of 110% to 120% of the minimum longitudinal distance is chosen, more preferably 110% to 115% of the minimum longitudinal distance.
  • the transverse beam may be a simple generally hollow component.
  • the transverse beam in the region of the centrally located receptacle, has at least one lateral wall element confining a receptacle for the traction linkage element, the lateral wall element being spaced from an adjacent one of the longitudinal beams.
  • a lateral wall element may serve as an inner reinforcement element allowing compact dimensions of the transverse beam at improved structural stability.
  • the respective lateral wall element may be rigidly connected only to one single of the adjacent walls of the transverse beam. However, preferably, it is connected to at least two of these adjacent walls to obtain, for example, the desired reinforcement properties.
  • the transverse beam is formed by a wall element set consisting of a front wall element, a rear wall element, an upper wall element and a lower wall element, the lateral wall element forming an inner reinforcement element of the transverse beam rigidly connected to at least two, preferably at least three, more preferably all, of the walls of the wall element set.
  • the lateral wall element may have any suitable shape selected, for example, as a function of the desired or necessary force flux within the transverse beam. Particularly good reinforcement properties are achieved if the lateral wall element, in a view along the height direction is substantially V-shaped. Such a configuration has the advantage that, for example, torsional rigidity of the transverse beam is greatly improved. Furthermore, preferably, a root section of the V-shaped lateral wall element is arranged such that it faces away from the traction linkage element. In this case, a compact configuration is achieved with a concentrated reinforcement in the area of the receptacle, e.g. receiving a traction linkage. Furthermore, the root section of the V-shaped lateral wall element may serve as a structurally highly stable interface for a transverse damping element connected to the traction linkage element and damping transverse motion of the traction linkage element.
  • the transverse beam in the region of a traction linkage element connected to the running gear frame (in particular received within the transverse beam), has at least one lateral stop element adapted to limit lateral motion of the traction linkage element in the transverse direction.
  • a very simple arrangement which is easy to manufacture is achieved if the lateral stop element is at least partially located outside the transverse beam.
  • the lateral stop element is located in the region of an upper wall section of the transverse beam.
  • the lateral stop element transversely abuts against an edge section of the upper wall section such that a favorable introduction of the transverse forces into the upper wall section is achieved predominantly resulting in sheer loads and largely avoiding bending loads in the upper wall section (thereby allowing lighter design of the latter).
  • the lateral stop element protrudes, in the height direction, from the transverse beam.
  • at least one lateral support element is associated to the lateral stop element, the lateral support element extending in the transverse direction.
  • the present invention may be used for any desired rail vehicle operating at any desired nominal operating speed.
  • the beneficial effect of the present invention or a particularly visible in the high-speed operations preferably, the running gear it is adapted for a nominal operating speed above 250 km/h, preferably above 300 km/h, more preferably above 350 km/h.
  • the present invention furthermore relates to a running gear with a running gear frame according to the invention as it has been outlined above. It further relates to a rail vehicle with a running gear frame according to the invention as it has been outlined above.
  • the vehicle 101 is a high-speed rail vehicle with a nominal operating speed above 250 km/h, more precisely above 300 km/h to 380 km/h.
  • the vehicle 101 comprises a wagon body (not shown) supported by a suspension system on the running gear 102.
  • the running gear 102 comprises two wheel units in the form of wheel sets 103 supporting a preferred embodiment of a running gear frame 104 according to the invention via a primary spring unit 105.
  • the running gear frame 104 supports the wagon body via a secondary spring unit 106.
  • the drive unit 107 comprises a motor unit 108 (suspended to the running gear frame 104) and a gearing 109 (sitting on the shaft of the wheel set 103) connected via a motor shaft 110. Both drive units 107 are of substantially identical design and arranged substantially symmetrically with respect to the center of the running gear frame 104.
  • the running gear frame 104 is of generally H-shaped design with a middle section in the form of a transverse beam 104.1 located between the wheel sets 103 and rigidly connecting two longitudinal beams 104.2.
  • the interface of the running gear 102 to the wagon body (not shown) is formed by a bolster 111 rigidly connected to the wagon body and supported on the running gear frame 104 via the secondary spring unit 106.
  • a traction linkage 112 comprising a traction linkage element 112.1.
  • a first end of the traction linkage element 112.1 is articulated to the transverse beam 104.1 at a first articulation location 112.2, while a second end of the traction linkage element 112.1 is articulated, at a second articulation location 112.3, to a console element in the form of an elongated arm 113 of the bolster 111.
  • the transverse beam 104 is a substantially box shaped element formed by a plurality of wall elements, namely (seen in the positive x-direction) a front wall element 104.3 and a rear wall element 104.4 as well as (seen in the z- direction) an upper wall element 104.5 and a lower wall element 104.6.
  • Figure 3 shows a partially sectional view of the running gear frame 104 where part of the upper wall element 104.5 as well as a part of an upper wall of the right longitudinal beam 104.2 have been removed for providing a better overview over the inner structure of the transverse beam 104.1 and the longitudinal beams 104.2.
  • the traction linkage element 112.1 is received within a centrally located receptacle 104.7 of the transverse beam 104.1.
  • the receptacle 104.7 is confined by the wall elements 104.3 to 104.6 as well as by two lateral wall elements 104.8 located on both sides of the center of the running gear frame 104.
  • Each lateral wall element 104.8 is spaced from the respective adjacent longitudinal beam 104.2 and is substantially V-shaped in a view along the height direction, a root section 104.9 of the lateral wall element 104.8 facing away from the traction linkage element 112.1 and towards the associated longitudinal beam 104.2.
  • lateral wall elements 104.8 form inner reinforcement wall elements of the transverse beam 104.1.
  • the lateral wall elements are rigidly connected to the adjacent wall elements 104.3 to 104.6 of the transverse beam 104.1.
  • This configuration has the advantage that, for example, torsional rigidity of the transverse beam 104.1 about the transverse axis (y-direction) is greatly improved. Furthermore, a compact configuration is achieved with a concentrated reinforcement in the area of the traction linkage 112.
  • the root section 104.9 of one of the lateral wall elements 104.8 further serves as a structurally highly stable interface for a transverse damping element (only schematically indicated in Figure 3 by its line of action 114) connected to either the traction linkage element 112.1 or, preferably, to the corresponding interface of the console 113.
  • the damping element 114 damps motion in the transverse direction (y-direction) between the running gear frame 104 and the bolster 111. It will be appreciated that, with other embodiments, of the invention such a damping element may be provided at each side of the running gear.
  • connection between the traction linkage element 112.1 and the console 113 (at the second articulation location 112.3) is provided via a fork shaped end section 113.1 reaching through an opening 104.10 of the upper wall element 104.5 down into the receptacle 104.7 such that each of its free ends is rigidly connected (e.g. via screws or the like) to a free end of an axle element 112.4 of the traction linkage element 112.1.
  • the axle element 112.2 is received within an elastic bearing (e.g. a conventional rubber bearing) of the traction linkage element 112.1 allowing relative motion between the traction linkage element 112.1 and the axle element 112.2.
  • a similar connection is provided at the other, first end of the traction linkage element 112.1 (i.e. at the first articulation location 112.2), where each of the free ends of an further axle element 112.5 (elastically held within the traction linkage element 112.1) is rigidly connected (e.g. via screws or the like) to an adjacent interface element 104.11 rigidly mounted to the front wall 104.3 of the transverse beam 104.1.
  • a lateral stop device 115 comprising two lateral stop elements 115.1 is provided to limit lateral motion of the bolster 111 with respect to the running gear frame 104 (and, hence, also lateral motion of the traction linkage element 112.1) in the transverse direction.
  • the lateral stop elements 115.1 are provided laterally at both sides of the opening 104.10 in the upper wall element 104.5 and are partially located outside the transverse beam 104.1.
  • Each lateral stop element 115.1 further reaches into the receptacle 104.7 and transversely abuts against an edge section of the upper wall element 104.5 such that a favorable introduction of the transverse forces into the upper wall element 104.5 is achieved predominantly resulting in sheer loads and largely avoiding bending loads in the upper wall element 104.5.
  • two lateral support elements 115.2 are provided for the part of the respective lateral stop element 115.1 protruding (in the height direction) from the transverse beam 104.1. These lateral support elements 115.2 extending in the transverse direction.
  • a drive support unit 116 for each one of the drive units 107 is mounted to the (transversally) central part of the front wall element 104.3 and the rear wall element 104.4, respectively.
  • Each drive support unit 116 comprises a lower support structure 116.1 and a plurality of drive support arms 116.2 mounted thereon.
  • Each of the drive support arms 116.2 forms a hook-shaped interface element for the drive unit 107 to support the latter.
  • the running gear frame 104 is a weight reduced yet structurally highly stable component, weight reduction while keeping structural stability being achieved by several, independently applicable approaches (yet these approaches are preferably combined to achieve the maximum effect).
  • the weight reduction of the running gear frame 104 achieved by these means is not only beneficial in terms of the overall energy consumption of the vehicle 101.
  • One of these approaches is to reduce the structure of the transverse beam to a minimum by providing the structural connection between the two longitudinal beams 104.2 in the (longitudinally) central area of the running gear frame 104 exclusively by the four wall elements 104.3 to 104.6.
  • a very compact and lightweight configuration is achieved by simply avoiding a conventional structure with two generally box-shaped transverse beams.
  • transverse beam 104.1 Furthermore, structural stability of the transverse beam 104.1 is increased (without noticeably increasing weight) by a longitudinally salient section 104.12 within the front wall section 104.3 and a longitudinally salient section 104.13 within the rear wall section 104.4 of the transverse beam 104.1. Both salient sections 104.12, 104.13 are substantially centrally located (in the transverse direction) and are formed in the area of the receptacle 104.7.
  • salient sections 104.12, 104.13 improve the introduction and support of the loads within the transverse beam 104.1. Furthermore, apart from increasing the bending resistance and the torsional resistance (via an increase in the respective second moment of area of the transverse beam 104.1), the salient sections 104.12, 104.13 also locally provide more space for receipt of the traction linkage element 112.1 while keeping the remainder of the transverse beam 104.1 compact.
  • the salient sections 104.12, 104.13 in the longitudinal direction, provide a maximum longitudinal distance LD max between the front wall element 104.3 and the rear wall element 104.4 which is 110% of a minimum longitudinal distance LD min between the front wall element 104.3 and the rear wall section 104.4.
  • this LD min is in the longitudinal distance between the front wall element 104.3 and the rear wall section 104.4 transversely outside of the salient sections 104.12, 104.13, which is in particular present at the respective connection between the front wall section 104.3 and the rear wall section 104.4 and the longitudinal beam 104.2.
  • the salient sactions104.12, 104.13, in the transverse direction, extend over a transverse distance TDS of about 45% of the inner transverse distance TDL between the longitudinal beams 104.2. Hence, by this means, only a moderate increase in the size of the transverse beam 104.1 is achieved while obtaining the above advantages.
  • the transverse distance TDS may vary from 25% to 65% of the longitudinal beam distance TDL, preferably from 35% to 55% of the longitudinal beam distance TDL, more preferably from 40% to 50% of the longitudinal beam distance TDL.
  • a further (nevertheless individually applicable) approach followed in the present example for reducing the weight of the running gear frame 104 is to use a plurality of weight reduced wall elements at several locations within the running gear frame 104 as will be explained in the following.
  • This weight reduction approach is based on the idea to modify the structure of the transverse beam (compared to conventional running gear frames of this type) insofar as each of these weight reduced wall elements shows at least one (otherwise nonfunctional) weight reduction recess at a less mechanically stressed location.
  • the present running gear frame 104 shows such weight reduction recesses 104.14 in the upper wall element 104.5, the lower wall element 104.6 and the reinforcement wall elements 104.8 of the transverse beam 104.1 as well as within inner reinforcement elements 104.15 of the longitudinal beams 104.2. Furthermore, such weight reduction recesses 115.3 also provided in the natural support elements 115.2. Finally, such weight reduction recesses 116.3 also provided within the lower support structure 116.1 and within the drive support arms 116.2 of the drive support unit 116.
  • weight reduction recess 104.14, 115.3, 116.3 typically, insofar distinguishes from other conventional recesses within components or wall elements as its single purpose is the weight reduction achieved. Hence, for this reason, such a weight reduction recess 104.14, 115.3, 116.3 distinguishes from other recesses (such as, for example, the opening 104.10) eventually present for (typically imperatively) providing access to another component of the vehicle or for immediately receiving further components of the vehicle.
  • the less mechanically stressed location for the weight reduction recess 104.14, 115.3, 115.3 is a location where, in a reference wall element and under any load collective LC i to be expected under normal operation of the rail vehicle 101, a reference stress RS i occurs that is less than 20% of a maximum reference stress RS max (that occurs in the reference element).
  • the reference wall element apart from having a continuous, recess-free wall design, is substantially identical to the corresponding wall element of the running gear frame 104 showing the weight reduction recess 104.14, 115.3, 116.3 and replaces this recessed wall element.
  • the maximum reference stress RS max , i is a maximum mechanical stress occurring in the reference wall element under the respective one of the load collectives LC i .
  • the reference stress RS i and the maximum reference stress RS max,i both are considered for the same load collective LC i , i.e. at the same loading situation of the running gear frame 104, such that different maximum reference stresses RS max,i may have to be considered depending on the loading situation.
  • certain locations may fulfill the requirements for being identified as a less mechanically stressed location under a first load collective LC 1 , (to be expected under normal operation of the vehicle and, hence, to be considered), these conditions may not be met under a further, different load collective LC 2 (also to be expected under normal operation and, hence, also to be considered).
  • the specific location does not qualify as such a less mechanically stressed location in the sense of the present invention, and, hence, no recess is placed at this location. It will be further appreciated that, with certain embodiments of the invention, only those load collectives LC i will have to be considered wherein maximum stresses are to be expected during normal operation of the vehicle 101.
  • a further advantage of the present embodiment of the rail vehicle 101 lies within the arrangement of the traction linkage 112 and its points of articulation providing advantageous transmission of the longitudinal forces resulting when accelerating or braking the vehicle 101 as will be outlined in the following.
  • the articulation locations 112.2 and 112.3 (more precisely the pivot axis) of the traction linkage element 112.1, in the height direction, are located at a second and a third height level above a track level (of the track as indicated by the dashed contour 117 in Figure 1 ) which is substantially identical to the first height level of the wheel unit axis of the wheel units 103.
  • This arrangement of the articulation locations 112.2 and 112.3 reduces the pitching moment (about the wheel axis) and, hence, the disposition of the running gear 102 to develop pitching oscillation (i.e. oscillation about a pitching axis running in the transverse direction) of the running gear frame 104. This is beneficial since such pitching oscillation is adverse in terms of running stability, derailment risk and passenger comfort, in particular, at high speeds.
  • this solution has the advantage that the articulation locations 112.2 and 112.3 are located comparatively low (in the height direction) such that pitch moments about the wheel-rail contact points are reduced, which may lead to undesired wheel unloading at the leading wheel unit 103 (when accelerating) or at the trailing wheel unit 103 (when braking) which increases the derailment risk.
  • connection between the components of the running gear frame 104 is provided using a welding process.
  • this technique or other connecting techniques may be used either alone or in arbitrary combinations.
  • sheet metal elements as well as cast or forged elements may be used either alone or in arbitrary combinations for the running gear frame.
  • a further preferred embodiment of a running gear 202 according to the invention comprising a preferred embodiment of the running gear frame 204 will be described in the following.
  • the running gear 202 is also used in the vehicle 101.
  • the running gear 202 and, in particular, the running gear frame 204 in their basic design and functionality largely correspond to the running gear 102 and the running the frame 104, such that only the differences will be discussed here.
  • like components are given the same reference numerals increased by the value 100.
  • explicit reference is made to the explanations given above unless explicit deviating statements are made in the following in this respect.
  • the running gear 202 is a non-driven running gear having no drive unit supported therein.
  • the running gear 202 comprises two brake support units 216 each adapted to support a brake unit (not shown in detail).
  • a brake support unit 216 for each one of the brake units is mounted to the (transversally) central part of the front wall element 204.3 and the rear wall element 204.4, respectively.
  • Each brake support unit 216 comprises a lower support structure 216.1 and a plurality of brake support arms 216.2 mounted thereon.
  • Each of the brake support arms 216.2 at its free end, carries a cast interface element 216.4 for the brake unit to support the latter.
  • a web element 216.5 of the respective support arm 216.2 is provided with a weight reduction recess 216.3 at a less mechanically stressed location fulfilling the requirements as outlined above in the context of the first embodiment.
  • the interface element 216.4 also is provided with a weight reduction recess 216.3 at a less mechanically stressed location fulfilling the requirements as outlined above in the context of the first embodiment.

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  • Mechanical Engineering (AREA)
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Claims (14)

  1. Fahrwerksrahmen für ein Schienenfahrzeug, umfassend:
    - zwei Längsträger (104.2) und
    - wenigstens einen Querträger (104.1; 204.1),
    - wobei die Träger eine im Wesentlichen H-förmige Anordnung bilden, die eine Längsrichtung, eine Querrichtung und eine Höhenrichtung definiert, wobei der Querträger (104.1; 204.1) eine strukturelle Verbindung zwischen den Längsträgern (104.2) in der Querrichtung bereitstellt,
    - wobei wenigstens einer der Träger (104.1, 104.2) und/oder wenigstens ein weiteres strukturelles Bauteil (115, 116; 216) des Fahrwerksrahmens von einer Vielzahl von Wandelementen (104.3 bis 104.6, 104.8, 104.15 115.2, 116.2; 204.3 bis 204.6, 216.5) gebildet werden,
    dadurch gekennzeichnet, dass
    - wenigstens eines der Wandelemente (104.3 bis 104.6, 104.8, 104.15 115.2, 116.2; 204.3 bis 204.6, 216.5) ein gewichtsreduziertes Wandelement ist, das an einer mechanisch weniger beanspruchten Stelle wenigstens eine ansonsten nichtfunktionelle Gewichtsreduktionsaussparung (104.14, 115.3, 116.3; 216.3) aufweist,
    - die mechanisch weniger beanspruchte Stelle eine Stelle ist, an der in einem Referenzwandelement und unter einem bei normalem Betrieb der Schienenfahrzeugeinheit zu erwartenden Lastkollektiv eine Referenzbeanspruchung auftritt, die weniger als 5 %, bevorzugt weniger als 10 %, weiter bevorzugt weniger als 15 % bis 20 % einer maximalen Referenzbeanspruchung ist,
    - das Referenzwandelement abgesehen davon, dass es eine kontinuierliche, aussparungsfreie Wandgestaltung hat, im Wesentlichen mit dem Wandelement, das die Gewichtsreduktionsaussparung (104.14, 115.3, 116.3; 216.3) aufweist, identisch ist und es ersetzt,
    - die maximale Referenzbeanspruchung eine maximale mechanische Beanspruchung ist, die unter dem jeweiligen der Lastkollektive in dem Referenzwandelement auftritt.
  2. Fahrwerksrahmen nach Anspruch 1, wobei
    - das wenigstens eine gewichtsreduzierte Wandelement ein oberes Wandelement (104.5; 204.5) und/oder ein unteres Wandelement (104.6; 204.6) von einem der Träger, insbesondere dem Querträger (104.1; 204.1), ist
    und/oder
    - das wenigstens eine gewichtsreduzierte Wandelement ein inneres Verstärkungswandelement (104.8) von einem der Träger ist
    und/oder
    - das wenigstens eine gewichtsreduzierte Wandelement ein Stützelement (115.2) eines seitlichen Anschlagelements (115.1) des Querträgers (104.1; 204.1) ist.
  3. Fahrwerksrahmen nach Anspruch 1 oder 2, wobei
    - das wenigstens eine weitere strukturelle Bauteil eine Antriebsstützeinheit (116) für eine Antriebseinheit (107) ist,
    - das wenigstens eine gewichtsreduzierte Wandelement ein Wandelement der Antriebsstützeinheit (116) ist.
  4. Fahrwerksrahmen nach Anspruch 3, wobei
    - die Antriebsstützeinheit (116) wenigstens einen Antriebsstützarm aufweist, der zum Abstützen der Antriebseinheit (107) ausgeführt ist, wobei das wenigstens eine gewichtsreduzierte Wandelement ein Wandelement des Antriebsstützarms (116.2) ist, insbesondere ein Stegelement des Antriebsstützarms (116.2),
    und/oder
    - die Antriebsstützeinheit (116) wenigstens ein Antriebsschnittstellenelement (116.2) aufweist, das zum Bilden einer Stützschnittstelle für die Antriebseinheit (107) ausgeführt ist, wobei das wenigstens eine gewichtsreduzierte Wandelement ein Wandelement des Antriebsschnittstellenelements (116.2) ist, insbesondere ein hakenförmiges Element des Schnittstellenelements (116.2).
  5. Fahrwerksrahmen nach einem der Ansprüche 1 bis 4, wobei
    - das wenigstens eine weitere strukturelle Bauteil eine Bremsenstützeinheit (216) für eine Bremseinheit ist,
    - das wenigstens eine gewichtsreduzierte Wandelement ein Wandelement der Bremsenstützeinheit (216) ist.
  6. Fahrwerksrahmen nach Anspruch 5, wobei
    - die Bremsenstützeinheit (216) wenigstens einen Bremsenstützarm (216.2) aufweist, der zum Tragen der Bremseinheit ausgeführt ist, wobei das wenigstens eine gewichtsreduzierte Wandelement ein Wandelement des Bremsenstützarms (216.2) ist, insbesondere ein Stegelement (216.5) des Bremsenstützarms (216.2),
    und/oder
    - die Bremsenstützeinheit (216) wenigstens ein Bremsenschnittstellenelement (216.4) aufweist, das zum Bilden einer Stützschnittstelle für die Bremseinheit ausgeführt ist, wobei das wenigstens eine gewichtsreduzierte Wandelement ein Wandelement des Bremsenschnittstellenelements (216.4) ist, insbesondere ein hakenförmiges Element des Schnittstellenelements.
  7. Fahrwerksrahmen nach einem der Ansprüche 1 bis 6, wobei
    - der Querträger (104.1; 204.1) von einem vorderen Wandelement (104.3), einem hinteren Wandelement (104.4; 204.4), einem oberen Wandelement (104.5; 204.5) und einem unteren Wandelement (104.6; 204.6) gebildet wird,
    - in dem Bereich des Querträgers (104.1; 204.1) die Strukturverbindung zwischen den Längsträgern (104.2) ausschließlich über das vordere Wandelement (104.3), das hintere Wandelement (104.4; 204.4), das obere Wandelement (104.5; 204.5) und das untere Wandelement (104.6; 204.6) bereitgestellt wird,
    und/oder
    - das vordere Wandelement (104.3) und/oder das hintere Wandelement (104.4; 204.4) ausschließlich von einem Blechelement gebildet werden, wobei das Blechelement insbesondere ein einlagiges Element ist.
  8. Fahrwerksrahmen nach einem der Ansprüche 1 bis 7, wobei
    - das wenigstens eine gewichtsreduzierte Wandelement (104.3 bis 104.6, 104.8, 104.15 115.2, 116.2; 204.3 bis 204.6, 216.5) mithilfe eines Schweißverfahrens mit einem weiteren der Wandelemente (104.3 bis 104.6, 104.8, 104.15 115.2, 116.2; 204.3 bis 204.6, 216.5) verbunden ist, wobei
    - das wenigstens eine gewichtsreduzierte Wandelement (104.3 bis 104.6, 104.8, 104.15 115.2, 116.2; 204.3 bis 204.6, 216.5) insbesondere ein Gusselement oder ein Blechelement ist.
  9. Fahrwerksrahmen nach einem der Ansprüche 1 bis 9, wobei
    - der Querträger (104.1; 204.1) eine mittig angeordnete Aufnahme (104.7) hat, wobei die Aufnahme (104.7) insbesondere ein Schnittstellenelement für ein Traktionsverbindungselement (112.1) aufweist, das zum Verbinden einer abgestützten Fahrzeugkomponente (111) und des Fahrwerksrahmens in der Längsrichtung ausgeführt ist,
    - der Querträger (104.1; 204.1) in der Region der mittig angeordneten Aufnahme (104.7) einen längs auskragenden Abschnitt (104.12, 104.13) innerhalb eines vorderen Wandabschnitts und/oder eines hinteren Wandabschnitts hat,
    - der auskragende Abschnitt (104.12, 104.13) insbesondere in der Längsrichtung zwischen dem vorderen Wandabschnitt und dem hinteren Wandabschnitt eine maximale Längsdistanz bereitstellt, die 105 % bis 130 %, bevorzugt 110 % bis 120 %, weiter bevorzugt 110 % bis 115 % einer Mindestlängsdistanz zwischen dem vorderen Wandabschnitt und dem hinteren Wandabschnitt beträgt.
  10. Fahrwerksrahmen nach Anspruch 9, wobei
    - der Querträger (104.1; 204.1) wenigstens ein seitliches Wandelement (104.8) hat, das die zentral angeordnete Aufnahme (104.7) begrenzt,
    - das seitliche Wandelement (104.8) von einem benachbarten der Längsträger (104.2) beabstandet ist,
    wobei insbesondere
    - der Querträger (104.1; 204.1) von einem Wandelementesatz gebildet wird, der aus einem vorderen Wandelement (104.3), einem hinteren Wandelement (104.4; 204.4), einem oberen Wandelement (104.5; 204.5) und einem unteren Wandelement (104.6; 204.6) besteht, wobei das seitliche Wandelement (104.8) ein inneres Verstärkungselement des Querträgers (104.1; 204.1) bildet, das mit wenigstens zwei, bevorzugt wenigstens drei, besonders bevorzugt allen der Wände des Wandelementesatzes starr verbunden ist,
    und/oder
    - das seitliche Wandelement (104.8) in einer Ansicht entlang der Höhenrichtung im Wesentlichen V-förmig ist, wobei ein Wurzelabschnitt des V-förmigen seitlichen Wandelements (104.8) insbesondere von dem Traktionsverbindungsselement (112.1) weg gekehrt ist.
  11. Fahrwerksrahmen nach einem der Ansprüche 1 bis 10, wobei
    - der Querträger (104.1; 204.1) in der Region der zentral angeordneten Aufnahme (104.7) wenigstens ein seitliches Anschlagelement (115.1) hat, das zum Einschränken der Seitwärtsbewegung des Traktionsverbindungselements (112.1) in der Querrichtung ausgeführt ist,
    wobei insbesondere
    - das seitliche Anschlagelement (115.1) wenigstens teilweise außerhalb des Querträgers (104.1; 204.1) liegt
    und/oder
    - das seitliche Wandelement (104.8) in der Region eines oberen Wandabschnitts des Querträgers (104.1; 204.1) liegt
    und/oder
    - das seitliche Anschlagelement (115.1) in der Höhenrichtung von dem Querträger (104.1; 204.1) vorsteht, wobei wenigstens ein seitliches Stützelement (115.2) dem seitlichen Anschlagelement (115.1) zugeordnet ist, wobei das seitliche Stützelement (115.2) in der Querrichtung verläuft, insbesondere bis zu der Region eines inneren Verstärkungselements (104.8), das sich in dem Querträger (104.1; 204.1) befindet.
  12. Fahrwerk mit einem Fahrwerksrahmen (104; 204) nach einem der Ansprüche 1 bis 11.
  13. Fahrwerk nach Anspruch 12, wobei es für eine Nennbetriebsgeschwindigkeit über 250 km/h, bevorzugt über 300 km/h, mehr bevorzugt über 350 km/h ausgeführt ist.
  14. Schienenfahrzeug mit einem Fahrwerk (102; 202) nach Anspruch 12 oder 13.
EP20110158515 2011-03-16 2011-03-16 Gewichtsreduzierter Fahrgestellrahmen für ein Schienenfahrzeug Not-in-force EP2500232B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20110158515 EP2500232B1 (de) 2011-03-16 2011-03-16 Gewichtsreduzierter Fahrgestellrahmen für ein Schienenfahrzeug
ES11158515.4T ES2470331T3 (es) 2011-03-16 2011-03-16 Bastidor de tren de rodadura de peso reducido para un vehículo ferroviario
CN2012100692592A CN102673598A (zh) 2011-03-16 2012-03-15 轨道车辆的减重运行机构框架

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Application Number Priority Date Filing Date Title
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CN104802822A (zh) * 2015-04-29 2015-07-29 长春轨道客车股份有限公司 标准动车组拖车转向架构架
CN104802821A (zh) * 2015-04-29 2015-07-29 长春轨道客车股份有限公司 新型高速动车组非动力转向架

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