EP2219927A1 - Poutre sollicitée en flexion en acier, destinée à un système d'aiguillage pour trains à sustentation magnétique - Google Patents

Poutre sollicitée en flexion en acier, destinée à un système d'aiguillage pour trains à sustentation magnétique

Info

Publication number
EP2219927A1
EP2219927A1 EP08858402A EP08858402A EP2219927A1 EP 2219927 A1 EP2219927 A1 EP 2219927A1 EP 08858402 A EP08858402 A EP 08858402A EP 08858402 A EP08858402 A EP 08858402A EP 2219927 A1 EP2219927 A1 EP 2219927A1
Authority
EP
European Patent Office
Prior art keywords
bending beam
hollow profile
cover plates
longitudinal direction
plates
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
Application number
EP08858402A
Other languages
German (de)
English (en)
Other versions
EP2219927B1 (fr
Inventor
Karl Fichtner
Wolfgang Kirstein
Robert Lippert
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.)
ThyssenKrupp Transrapid GmbH
Original Assignee
ThyssenKrupp Transrapid 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 ThyssenKrupp Transrapid GmbH filed Critical ThyssenKrupp Transrapid GmbH
Publication of EP2219927A1 publication Critical patent/EP2219927A1/fr
Application granted granted Critical
Publication of EP2219927B1 publication Critical patent/EP2219927B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B25/00—Tracks for special kinds of railways
    • E01B25/30—Tracks for magnetic suspension or levitation vehicles
    • E01B25/34—Switches; Frogs; Crossings

Definitions

  • the invention relates to a bending beam of the type specified in the preamble of claim 1.
  • a known switch assembly of the type of interest here consists of a so-called. Biegeweiche (eg., "Maglev Transrapid - The new dimension of travel", Hestra- Verlag Darmstadt 1989, pages 32 to 35, DE 10 2004 015 495 Al).
  • An essential part of such Biegeweiche is a bendable, made of steel carrier of the above-mentioned genus, the z. B. 78 m long or longer or shorter and carries the infrastructure or equipment from this.
  • the bending beam is stationarily arranged at one end and, moreover, movably mounted on rails by means of a plurality of supporting frames and wheels mounted thereon, which rails are arranged transversely to its longitudinal direction, which is also the direction of travel or x-direction.
  • the support frames along the rails can be moved back and forth, whereby the carrier is elastically bent and selectively aligned with one of several, branching from the switch driveways.
  • the carrier may be composed of a plurality of interconnected in its longitudinal direction sections.
  • the bending beam usually contains as a basic element consisting of a box section with a rectangular cross-section hollow body composed of two lateral web plates, a lower flange and a top flange and stiffened by internal transverse walls (bulkheads).
  • the bending beam in the extensions of the bulkheads mounted cantilevers (support plates) and supported on these cover plates, where various functional parts of the infrastructure such.
  • As sliding strips, side guide rails and retaining elements for the stator of a long stator linear motor od. Like. Are attached.
  • the cover plates and the functional parts consist of sections which are comparatively short in the longitudinal direction of the travel path and form individual track elements. These preferably have a pitch of the magnetic levitation railway dependent length of z. B. 2064 mm and are separated by narrow, transverse to the hollow body extending column.
  • the cover plates have a number of slots, in order to avoid that they warp or fold during elastic bending of the bending beam perpendicular to its surface, ie in the z-direction, ie a reduction of the stiffness and stress of the switch to the z- Axis is achieved.
  • Welds for example, which connect the cantilevers and bulkheads with the web plates and where virtually the entire track is supported, form so-called cross joints, which are particularly stressed in the elastically deformed state of the bending beam and when driving over a vehicle and limit the fatigue strength of the bending beam. Fatigue cracks will therefore occur first in these welds. Especially in the case of 3-way switches, the forced deformations and the driving operation lead to high voltage amplitudes which increase the risk of fatigue even further. Another disadvantage is that the welds are partially visible from the outside neither readily accessible yet. This applies z. B. for the connections between the top flange and the cover plates as well as for the close to the top flange connections between the web plates and provided on the cantilever inner edges.
  • the technical problem underlying the invention is to improve the bending beam of the type described above in that it has an increased fatigue strength and allows a greater number of Weichenver einen and vehicle crossings.
  • the solution to this problem is inventively with the characterizing features of claim 1.
  • the cantilevers are each divided into a pressure and tension strut.
  • a distribution of the forces resulting from the ferry operation and the positive deformation is possible on tensile forces which act essentially only on the tension struts and in the y direction and on compression forces which act essentially only on the compression struts and predominantly in the z direction , These forces therefore no longer need to be absorbed solely by the inner edges or by the welds connecting them to the web plates.
  • the invention makes it possible to arrange the inner edges of the struts and connected to the upper straps ends of the tie rods with sufficient distances from each other. As a result, non-visible and inaccessible welds are largely avoided.
  • the risk of tearing underlying load-bearing welds can be arranged so that they are well visible and, if necessary, better accessible than before from the outside. Because of the reduced loads in the area of the cross joints, more favorable notch cases can also be assigned, i.
  • the welds can be designed so that defined in standards curbs can be clearly assigned. Overall, the invention therefore leads to reduced stresses in the welds, increased fatigue strength and a longer life of the entire switch assembly.
  • Fig. 3 is a schematic plan view of the bending beam and attached thereto Ausriistungser the switch assembly of Figures 1 and 2;
  • Figures 4 and 5 are sections taken along lines IV-IV and V-V of Figure 3;
  • FIG. 6 is a schematic plan view corresponding to FIG. 3 of a bending beam according to the invention.
  • FIGS 7 and 8 are sections taken along lines VII-VII and VIII-VIII of Figure 6;
  • FIG. 9 shows a plan view of a single cover plate of the bending support according to FIG. 6;
  • FIG. 10 shows a section along the line X-X of FIG. 7 solely by means of a top flange and a tie bar of a cantilever arm connected thereto;
  • Fig. 11 is a section along the line XI-XI of Fig. 7 solely by a drawstring of a cover plate and an associated tension strut of a cantilever.
  • Fig. 1 to 5 contains a conventional switch assembly in the form of a bending weir for magnetic levitation trains a bendable, made of steel and over the entire length of the switch, for example, about 78 m long bending beam 1.
  • each web plate 5 vertically from it in the y direction to the right or left projecting support plates or cantilevers 8 attached to the ends of webs 9 are attached.
  • On the webs 9 are arranged parallel to the cantilevers 8 and preferably in their extensions (y-direction) arranged ribs 10, on the outer faces of equipment 11 are mounted in the form of the tracking of the vehicles serving side guide rails.
  • a seelite- rail is provided on each longitudinal side of the bending beam 1, wherein the arrangement is preferably mirror-symmetrical to xz plane of the imaginary coordinate system.
  • cover plates 12 are supported on both sides of the hollow section 2 and in a symmetrical arrangement, where further, not shown equipment in the form of sliding strips can be attached, which serve to settle the vehicles and how the equipment 11 over the entire length of the bending beam 1 extend.
  • the bending beam 1 is provided on the underside of the webs 9 with equipment parts 14 in the form of stator carriers, the z. B. are used for attachment of stator of a long stator linear motor.
  • the described parts 1 to 14 are made of steel and are undetachably joined together by welding to form the apparent from Fig. 1 to 4 bending beam 1.
  • the bending beam 1 to z. B. six supports 16 to 21 supported, wherein it is fixedly connected to a first support, here the support 16, while on the other supports 17 to 21 in a known manner transverse to the longitudinal direction, i. in y-direction and can be moved substantially horizontally back and forth.
  • the equipment parts 10 and 14 and the cover plates 12 which can be seen from FIGS. 4 and 5 are not combined with the hollow profile 2 when the switch arrangement is actuated. bent. They consist rather of z. B. only about 2 m long sections, which are arranged in the installed state in the x direction one behind the other and separated by narrow gaps 22 (Fig. 3) from each other, so that they automatically arrange on bending of the hollow section 2 along a traverse.
  • the cover plates 12 are expediently provided with slots 12a running parallel to the x- and y-axis, in order to facilitate the bending of the hollow profile 2 and to avoid distortions or folds of the cover plates 12 in the z-direction, which due to their coupling could result in the cantilevers 8.
  • the initially described problems of the described bending beam 1 are mainly due to in Fig. 3 and 4 partially indicated by the reference numeral 24 welds in the area of the cross joints between the inner and outer sides of the web plates 5, the bulkheads 6, 7 and inner edges 8a of the cantilevers 8.
  • These welds 24 carry not only the cantilevers 8 and their associated equipment parts 11 and 14, but also the loads occurring when driving over a vehicle.
  • the cover plates 12 are supported almost exclusively on the cantilever arms 8 and along short center webs 12b and with the formation of further welds 25 with the hollow sections 2 and their upper chords 3 are connected (see Fig .. 3 and 5).
  • the end sections 12c of the cover plates 12, which are likewise each connected to an associated cantilever 8, have no connection to the hollow profile 2, but are separated from it by further gaps 26 (FIGS. 3 and 4).
  • the welds 25 and the upper ends of the welds 24 of the cross joints are not visible and accessible from all sides required, which complicates or prevents necessary maintenance and repair work.
  • an inventive bending beam 31 according to FIG. 6 to 11
  • a hollow profile 32 which is composed of a top flange 33, a bottom flange 34, web plates 35 and bulkheads 36, 37, and cantilevers 38, at which webs 39, ribs 40, equipment 41, with slots 42a, middle portions 42b and end portions 42c provided cover plates 42 and equipment 44 are attached, but the cantilevers 38 and cover plates 42 are designed differently than before.
  • the cantilevers 38 have two sections merging into one another, of which a lower section a compression strut 38b provided with an inner edge 38a and upper portion is formed as a tension strut 38c.
  • the pressure strut 38b is connected with its inner edge 38a to an associated web plate 35 and connected thereto by welding. From the inner edge 38a and thus from the hollow profile 32, the pressure strut 38b extends obliquely upwards and outwards to a transition region 38d, which is welded to the web 39.
  • the tension strut 38c is formed, which extends from there substantially in the y-direction and the hollow profile 2 and includes with the pressure strut 38b an acute angle.
  • the parts 38a to 38d are, as FIG. 6 shows, preferably provided on a plane-parallel, integrally produced sheet-metal component.
  • Figures 7 and 8 show that those struts 38b which are supported at a bulkhead 6 extended over approximately one half the height of the hollow section 2 terminate at a correspondingly short inner edge 38a ( Figure 7), whereas those struts are compressed 38b, which are adjacent to a substantially over the entire height of the hollow profile 32 extending bulkhead 37, are provided with a z-directional extension 38e and therefore have a correspondingly elongated inner edge 38a (Fig. 8), which is close to the lower flange 4 comes up.
  • the cover plates 42 are, as in particular Fig. 9 can be seen in a single representation of the left in Fig. 6 cover plate, according to a particularly preferred and previously held for the best embodiment of the invention in the region of their two End portions 42c each provided with a hollow profile 32 toward the recess 42d, in each of which an integrally formed on the cover plate 42, extending substantially in the y direction drawstring 42e protrudes.
  • the outer sides of the web plates 35 are connected only to the inner edges 38 a of the pressure struts 38 b of the cantilever arms 38.
  • the cantilever arms 38 (FIGS. 6 and 7) assigned to the end sections 42c of the cover plates 42 are connected to the bottom sides of their tension struts 38c
  • the cantilevers 38 (FIGS. 6 and 8) assigned to the center webs 42b of the cover plates 42 are fastened with their tension struts 38c to the undersides of these center webs 42b.
  • the hollow profile 32 facing the end of the central web 42 b and the drawstrings 42 d of the cover plates 42 are connected along short welds 45 and 46 with the upper flange 33 of the hollow section 32.
  • the top flange 33 is preferably provided with laterally formed lugs 33a and 33b, which in x-
  • the welding is preferably carried out on both sides of the lugs 33a and 33b, as shown in Fig. 10 in a section showing only the tie rod 38c and an associated approach 33a of the upper chord in the region of the interface 47 in high magnification.
  • the reference numeral 48 indicates the welds on both sides of the attachment 33a.
  • FIG. 11 shows a schematic, enlarged section in the region of the connection of a drawstring 42e of the cover plate 42 and a tie bar 38c of an associated cantilever 38, corresponding to Fig. 9 on both sides of the drawstring 42e to see the associated parts of the cover 42 mounted in the recess 42d are. Welds 49 extending in the y-direction are also indicated.
  • the described construction of the bending beam 32 brings numerous advantages.
  • all forces eg arrow F in FIG. 7 that result from the driving operation and the forced deformation are distributed to the tension and compression struts 38b, 38c, as indicated by arrows 50 in FIG. 7 and 8 is indicated.
  • the welding seams 51 FIG. 6) corresponding to the weld seams 24 (FIG. 3), which connect the pressure struts 38b to the web plates 35, are considerably relieved in the area of the cross joints.
  • the supporting welds which mainly include the welds 48 and 51, with a relatively large distance in the z-direction from each other.
  • the distances between the upper flange 33 facing ends of the tie rods 38c and z in the direction of the upper ends of the inner edges 38a of the struts 38b as shown in FIG. 7 and 8 are preferably chosen so large that the welds 48, 51 not only of all required Pages are visible, but can also be easily achieved with conventional testing or maintenance equipment. As a result, for example, the repair of cracks or the re-welding of welds is facilitated.
  • a further significant advantage consists in the fact that a bending of the bending beam 31 leads to an elastic forced deformation of the tension straps 42e of the cover plates 42, which favors the flexibility of the bending operation and reliably avoids distortions of the cover plates 42. Regardless, the various roadway parts continue to be easy to produce.
  • the invention is not limited to the described embodiment, which could be modified in many ways. This applies in particular to the apparent from Fig. 6 and 9 shape and size of the slots 42a and recesses 42d in the cover plates 42 and the compounds of the cover plates 42 and cantilevers 38 with the equipment parts 41 and 44. Furthermore, the special shape of the cover plates 42 and the cantilever arms 38 and their pressure and Zustben 38b, 38c are made dependent on the needs of the case. Finally, it should be understood that the various features may be applied in combinations other than those described and illustrated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Railway Tracks (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Resistance Welding (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

L'invention concerne une poutre sollicitée en flexion (31) en acier, destinée à un système d'aiguillage pour trains à sustentation magnétique. La poutre sollicitée en flexion (31) comprend un profilé creux (32) s'étendant dans un sens longitudinal (x) et flexible dans un sens transversal (y), lequel profilé creux est pourvu d'âmes latérales (35) et d'une membrure supérieure (33), une pluralité de bras en porte-à-faux (38), espacés dans le sens longitudinal (x), s'étendant dans le sens transversal (y) et reliés aux âmes (35), ainsi qu'une pluralité de coiffes (42) placées les unes derrière les autres dans le sens longitudinal (x) et s'appuyant sur les bras en porte-à-faux (38), les joints entre les âmes (35), les bras en porte-à-faux (38) et les coiffes (42) étant constitués de joints soudés. Selon l'invention, les bras en porte-à-faux (38) présentent chacun un arc-boutant (38b), relié à une âme (35) et saillant de cette dernière en biais vers le haut et l'extérieur, ainsi qu'un tirant (38c) formé sur l'arc-boutant et saillant en direction du profilé creux (32), tirant au moyen duquel les bras en porte-à-faux sont reliés aux coiffes (42) et à la membrure supérieure (33).
EP08858402A 2007-12-11 2008-11-28 Poutre sollicitée en flexion en acier, destinée à un système d'aiguillage pour trains à sustentation magnétique Not-in-force EP2219927B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202007017388U DE202007017388U1 (de) 2007-12-11 2007-12-11 Biegeträger aus Stahl für eine Weichenanordnung bei Magnetschwebebahnen
PCT/DE2008/001979 WO2009074130A1 (fr) 2007-12-11 2008-11-28 Poutre sollicitée en flexion en acier, destinée à un système d'aiguillage pour trains à sustentation magnétique

Publications (2)

Publication Number Publication Date
EP2219927A1 true EP2219927A1 (fr) 2010-08-25
EP2219927B1 EP2219927B1 (fr) 2013-02-20

Family

ID=39244859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08858402A Not-in-force EP2219927B1 (fr) 2007-12-11 2008-11-28 Poutre sollicitée en flexion en acier, destinée à un système d'aiguillage pour trains à sustentation magnétique

Country Status (5)

Country Link
US (1) US8371228B2 (fr)
EP (1) EP2219927B1 (fr)
CN (1) CN101868393B (fr)
DE (1) DE202007017388U1 (fr)
WO (1) WO2009074130A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108203902A (zh) * 2018-02-11 2018-06-26 北京交通大学 一种适用于磁浮交通的∏型轨
CN110438852B (zh) * 2018-05-05 2024-09-20 中铁宝桥集团有限公司 一种适应磁悬浮运行车辆测速的道岔梁结构
JP7100761B2 (ja) * 2019-01-23 2022-07-13 中▲車▼青▲島▼四方▲機車車▼輌股▲分▼有限公司 磁気浮上列車の軌道用の分岐器
CN111535086B (zh) * 2020-06-10 2024-09-20 中铁宝桥集团有限公司 磁浮道岔小位移转辙锁定一体装置及方法
CN113356647B (zh) * 2021-06-13 2023-01-13 中国建筑第八工程局有限公司 一种双肢悬挑型钢柱系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5575001A (en) 1978-11-29 1980-06-06 Tokyo Shibaura Electric Co Simple joint type branching apparatus for track of constant conductive magnetic float vehicle
DE4038339A1 (de) * 1990-12-01 1992-06-04 Industrieanlagen Betriebsges Stellvorrichtung fuer biegeweichen
DE20208421U1 (de) 2002-05-28 2003-10-09 ThyssenKrupp Technologies AG, 45128 Essen Biegeträger aus Stahl für eine Spurwechseleinrichtung bei Fahrwegen von Magnetschwebefahrzeugen
CN2687161Y (zh) * 2004-01-16 2005-03-23 上海迈祥工程技术咨询有限公司 磁浮列车轨道线路道岔机构
DE102004015495A1 (de) 2004-03-26 2005-10-13 Thyssenkrupp Transrapid Gmbh Weichenanordnung für Magnetschwebebahnen und dafür geeignete Biegeträger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009074130A1 *

Also Published As

Publication number Publication date
US8371228B2 (en) 2013-02-12
CN101868393A (zh) 2010-10-20
US20100269728A1 (en) 2010-10-28
CN101868393B (zh) 2013-04-03
DE202007017388U1 (de) 2008-03-27
WO2009074130A1 (fr) 2009-06-18
EP2219927B1 (fr) 2013-02-20

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