WO2012000061A1 - Wagons de marchandises - Google Patents

Wagons de marchandises Download PDF

Info

Publication number
WO2012000061A1
WO2012000061A1 PCT/AU2011/000834 AU2011000834W WO2012000061A1 WO 2012000061 A1 WO2012000061 A1 WO 2012000061A1 AU 2011000834 W AU2011000834 W AU 2011000834W WO 2012000061 A1 WO2012000061 A1 WO 2012000061A1
Authority
WO
WIPO (PCT)
Prior art keywords
bolster
casting
interface
center sill
center
Prior art date
Application number
PCT/AU2011/000834
Other languages
English (en)
Other versions
WO2012000061A8 (fr
Inventor
Jim Watters
Original Assignee
United Group Rail Services Limited
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
Priority claimed from AU2010902945A external-priority patent/AU2010902945A0/en
Application filed by United Group Rail Services Limited filed Critical United Group Rail Services Limited
Priority to CN2011800332764A priority Critical patent/CN103298677A/zh
Publication of WO2012000061A1 publication Critical patent/WO2012000061A1/fr
Publication of WO2012000061A8 publication Critical patent/WO2012000061A8/fr

Links

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
    • B61F1/00—Underframes
    • B61F1/02—Underframes with a single central sill
    • 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
    • B61F1/00—Underframes
    • B61F1/08—Details
    • B61F1/10—End constructions

Definitions

  • This invention is in the field of railway rolling stock, and in particular freight wagons.
  • the invention is a freight wagon end casting.
  • the invention is a method for manufacturing a freight wagon.
  • a typical freight wagon 10 will briefly be described with reference to Fig. 1.
  • the wagon 10 has a central sill 12 that runs longitudinally under the length of the wagon body 14. Near each end of the central sill 12 is a transverse wagon bolster 16.
  • the wagon bolsters 16 serve two purposes: First, they locate side bearers that provide roll stability by reacting on the bogie 18. Second, they provide a location 20 for lifting or jacking the wagon body. Under the cross formed by the sill 12 and each bolster 16 is a center pin or plate 22 that engages the bogie and allows rotation between the wagon and the bogie.
  • Manufacture of freight wagons generally involves the fabrication of separate subassemblies for the draft pocket rear stop plates, bolster, transition to center sill member and center plate. These sub assemblies are then brought together and welded to form the end structure of the wagon. The welding requires accurate jigging and setup.
  • the invention is a monolithic, steel, freight wagon end casting, comprising:
  • draft pocket rear stop surfaces to react against draft gear.
  • a center sill interface to connect to the center sill member.
  • a bolster interface to connect to a bolster.
  • the casting integrates four functional components of a freight wagon into a single monolith.
  • the four functional components are the draft pocket rear stops, center plate, bolster interface and the transition to the center sill member.
  • the monolithic casting integrates the highest fatigue loaded locations in the wagon structure, and results in superior fatigue performance. Both a lower probability of fatigue failure and a higher fatigue life. Fatigue failure is arguably the highest structural risk on a freight wagon.
  • the casting process offers flexibility of metal placement which enables more effective mass optimization than can be achieved with the contemporary fabrication approach. Mass savings in the order of 10% are envisaged with optimization. This mass reduction is highly beneficial as it can enable a higher payload for a fixed axle loading.
  • Another benefit of the casting is greater precision in the dimensions of the finished wagon end assembly.
  • the casting may also include a draft pocket interface comprising a weld preparation spigot for accepting the draft pocket webs, and top and bottom flanges.
  • the center sill interface may further include a spigot configured to be butt welded to the end of the center sill member.
  • the bolster interfaces may comprise an upright edge, and optionally, upper and lower horizontally extending edges.
  • a spigot could be provided for, say, a rectangular cross section bolster that would be connected either by welding or mechanical fastening.
  • the invention is a process for manufacturing freight wagons, comprising the steps of:
  • Casting a monolithic steel body comprising:
  • draft pocket rear stop surfaces At a first end, draft pocket rear stop surfaces.
  • a center sill interface At a second end opposite the first end, a center sill interface.
  • the casting may also include, at the first end an interface to draft pocket webs and flanges.
  • Fig. 2(a) is a pictorial view of a first end of a freight wagon end casting.
  • Fig. 2(b) is a plan view of the freight wagon end casting.
  • Fig. 2(c) is a pictorial view of the other end of the freight wagon end casting.
  • Fig. 2(d) is an elevation of the first end of the freight wagon end casting.
  • Fig. 2(e) is a side elevation of the freight wagon end casting.
  • Fig. 2(f) is an elevation of the other end of the freight wagon end casting.
  • Fig. 2(g) is a view from below of the freight wagon end casting.
  • Fig. 2(i) is a section through A - A shown in Fig. 2(d).
  • Fig. 2(j) is a section through B- B shown in Fig. 2(e)
  • Fig. 3 is a pictorial view of the freight wagon end casting in situ in a wagon. Best Modes of the Invention Referring now to Figs. 2, the invention is a bespoke steel casting 100 that integrates four entirely different functional components of a freight wagon into a monolith.
  • the four functional components are: At the second end, the transition 102 to the center sill member 12. At the first end the inclusion of the draft pocket rear stops 104.
  • the bolster interface 108 including an upright edge 1 10, and upper 1 12 and lower 1 14 horizontally extending edges.
  • a central hollow column 118 passes vertically through the casting 100.
  • Horizontally extending ribs 120 and 122 extend through the casting to strengthen it longitudinally for the high coupler buff loads transmitted via the draft gear into the rear stops 104 of the casting 100.
  • This is configured as a spigot 102 that enables the sill member 12 to be both located onto and aligned with the casting 100.
  • the spigot 102 is profiled to achieve a full penetration butt weld to the end of the sill member 12. Alternatively, this could be modified to accommodate a mechanical fastened connection.
  • the direct load path from the dominantly loaded rear stops 104 through the casting 100 to the center sill 12 can be seen in Fig. 3. This feature is responsible for imparting very high fatigue performance by concentrating the coupler load into the sill member 12 without significant diffusion of load into any other structure, for instance a hopper, that is not specifically configured to accommodate it. As the sill member 12 and its connection is sized and configured for high loads, very high fatigue performance is realized.
  • the function of the bolster 16 is to provide an interface to the wagon for lifting and jacking, and to react the vertical sidebearer reactions that control wagon roll. In both cases the loading is dominantly vertical.
  • the casting 100 provides an upright edge 1 10 for butt welding to the web of the bolster. Upright edge 1 10 both locates the bolster 16 and provides a weld preparation for the connection. Similarly, the casting provides an interface in the form of upper 1 12 and lower 1 14 horizontally extending edges that both locate and facilitate welding to the upper 18 and lower 20 flanges of the bolster 16. Significant manufacturing setup time is saved relative to conventional full fabrication methods because of this ready interface. Alternatively a spigot similar to 102 could be provided for a rectangular cross section bolster that would be connected either by welding or mechanical fastener. Center Plate 106
  • Center plates 106 are conventionally either welded or huck bolted to a wide thick base flange. Both processes are slow and tedious requiring careful setup. For bolt on center plates it is usual to machine this flange to ensure correct seating of the center plate casting. There are two downsides to this process; firstly, extra thickness is required to provide for a machining allowance and secondly it is an additional process. Welding the center plate castings is usual, but introduces its own challenges in the form of the weld shrinkage causing misalignment. Careful compensation measures are required, which takes time and is vulnerable to error.
  • the rear stops 104 for the draft gear are the most heavily loaded components in a freight wagon. As a consequence heavy gusseting is necessary. This introduces two major problems: First, gusset plates are thick and require full preparation butt welds. This necessitates profiling plates and machining the weld preparations which is expensive. Second, when the gussets are welded into location their spacing is close and the available space makes visibility for welding and indeed welding access somewhat difficult, this can have a negative effect on weld quality and inspection.
  • the casting 100 eliminates any need for welding and in fact provides a homogeneous integration of the stops and gussets into the casting.
  • a coupler 204 is connected to each end of the wagon.
  • the draft gear of the coupler (its elastic components) are received in a draft pocket 206 in front of the rear stops 104.
  • the bolster may have a hollow rectangular cross section similar to the sill beam.
  • the spigots of the sill beam, bolster and draft pocket may be modified to accept a mechanically fastened connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

La présente invention concerne le domaine du matériel roulant ferroviaire, et en particulier des wagons de marchandises. Un premier aspect de l'invention concerne une pièce coulée d'extrémité de wagon de marchandises. Un second aspect de l'invention concerne un procédé de fabrication d'un wagon de marchandises. L'invention concerne une pièce coulée d'extrémité de wagon de marchandises en acier, monolithique, comprenant : au niveau d'une première extrémité, des surfaces de butée arrière de logement de dispositif de traction, destinées à agir contre le dispositif de traction; au niveau d'une seconde extrémité opposée à la première extrémité, une interface de longrine centrale destinée au raccordement à l'élément longrine centrale; sur chaque côté, une interface de traverse destinée au raccordement à une traverse; en dessous, un plateau central destiné à venir en prise avec le bogie.
PCT/AU2011/000834 2010-07-02 2011-07-01 Wagons de marchandises WO2012000061A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011800332764A CN103298677A (zh) 2010-07-02 2011-07-01 货运货车

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2010902945A AU2010902945A0 (en) 2010-07-02 Freight wagons
AU2010902945 2010-07-02

Publications (2)

Publication Number Publication Date
WO2012000061A1 true WO2012000061A1 (fr) 2012-01-05
WO2012000061A8 WO2012000061A8 (fr) 2012-03-01

Family

ID=45401237

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2011/000834 WO2012000061A1 (fr) 2010-07-02 2011-07-01 Wagons de marchandises

Country Status (2)

Country Link
CN (1) CN103298677A (fr)
WO (1) WO2012000061A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902947A (en) * 1955-07-20 1959-09-08 Gen Steel Castings Corp Railway draft sill and body bolster structure
US5704296A (en) * 1996-09-13 1998-01-06 Mcconway & Torley Corporation Cast draft sill with low profile center plate
US6986432B2 (en) * 2003-01-30 2006-01-17 Asf-Keystone, Inc. Common cast draft sill for type E and F draft gear

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200999045Y (zh) * 2006-12-27 2008-01-02 中国南车集团北京二七车辆厂 货物转向架底座
CN101121410A (zh) * 2007-09-13 2008-02-13 中国南车集团眉山车辆厂 驮背-集装箱运输专用车

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2902947A (en) * 1955-07-20 1959-09-08 Gen Steel Castings Corp Railway draft sill and body bolster structure
US5704296A (en) * 1996-09-13 1998-01-06 Mcconway & Torley Corporation Cast draft sill with low profile center plate
US6986432B2 (en) * 2003-01-30 2006-01-17 Asf-Keystone, Inc. Common cast draft sill for type E and F draft gear

Also Published As

Publication number Publication date
WO2012000061A8 (fr) 2012-03-01
CN103298677A (zh) 2013-09-11

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