EP0334862B1 - Cast iron sleeper with built-in rail anchors - Google Patents

Cast iron sleeper with built-in rail anchors Download PDF

Info

Publication number
EP0334862B1
EP0334862B1 EP87907625A EP87907625A EP0334862B1 EP 0334862 B1 EP0334862 B1 EP 0334862B1 EP 87907625 A EP87907625 A EP 87907625A EP 87907625 A EP87907625 A EP 87907625A EP 0334862 B1 EP0334862 B1 EP 0334862B1
Authority
EP
European Patent Office
Prior art keywords
sleeper
cast iron
built
rail
cast
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.)
Expired - Lifetime
Application number
EP87907625A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0334862A1 (en
Inventor
Fulvio De Carli
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.)
ALTI FORNI E FERRIERE DI SERVOLA SpA
Original Assignee
ALTI FORNI E FERRIERE DI SERVOLA SpA
ATTIVITA IND TRIESTINE SpA
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 ALTI FORNI E FERRIERE DI SERVOLA SpA, ATTIVITA IND TRIESTINE SpA filed Critical ALTI FORNI E FERRIERE DI SERVOLA SpA
Priority to AT87907625T priority Critical patent/ATE67539T1/de
Publication of EP0334862A1 publication Critical patent/EP0334862A1/en
Application granted granted Critical
Publication of EP0334862B1 publication Critical patent/EP0334862B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
    • E01B3/44—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from other materials only if the material is essential

Definitions

  • This invention has, as a subject, a cast iron sleeper with built in anchorages (hooks) for rail track.
  • the average life of the wood sleepers ranges from 15 to 20 years.
  • Said pre-compressed reinforced concrete sleeper has replaced wood in its function of stress distributor, but it has not obviated the need to separately arrange anchorages, prior to preparation, seasoning, impregnation, and bituminization work on the sleeper; all this is definitely expensive.
  • Patents US-A-1626082 and US-A-1671877 are also known to exist. They concern cast iron sleepers which have an anchorage obtained by means of pins, drift bolts or other means. Patent US-A-1626082 in particular deals with a sleeper, where the junction of the rail with the sleeper is obtained by means of drift bolts passing through a bearing block, inserting themselves whithin special cavities provided in the sleeper.
  • the major deficiency of this invention is its high constructive complexity: the construction of the sleeper apart from bearing blocks, the drilling of holes in the sleeper itself, the difficulty of insertion and fastening of pins in the pre-arranged holes.
  • Patent US-A-1671877 presents a deficiency too: in this case, in fact, there are only some bearing pins which keep each rail in position, preventing sideways movement. This system of steady retention does not seem to be very safe, considering the high speed of modern trains.
  • each anchorage 2 includes an inclined support surface for the rail flange limited by two parallel pawls, one of which has been located towards the sleeper centre, and the other towards its outer side.
  • the invention in question obtained by casting makes it possible to obtain a rail sleeper 1 with well-defined mechanical characteristics, able optimally to meet the necessary requirements of strength and resistance of the track to the specific pressure stresses, distributing them on a wide surface, and allowing ⁇ by using anchorages 2 obtained by casting (in a single piece, with the rail track casting) ⁇ the track to be locked by the classical dogs and plate system.
  • the cast iron rail sleeper 1 in question has a practically unlimited life, it does not need to be imported; thanks to its structure and shape, it optimally distributes stresses; it lends the track a strength suitable to heavy and very fast traffic; it does not require plate anchorage arrangements, since they already are obtained by casting.
  • the anticipated gauge is obtained; as the anchoring (hook), is a cast product, it does not shift (unlike all types used so far: possible shifting of bolts, dowels, etc. due to vibrations and material wear); the gauge is fixed and set; maintenance is practically unnecessary; safety is maximum.
  • said sleeper 1 can have any section (if anticipated cast anchorages (hooks) are built in).
  • said sleeper 1 can be totally hollow, with different thicknesses, and completely filled up with inert material (for example: sand), in order to dampen vibrations, thus giving a lighter cast.
  • inert material for example: sand
  • Table 1 Figure 1 shows the sleeper 1 front view
  • Figure 2 shows a sleeper 1 cross section
  • Figure 3 shows the sleeper 1 upper view.
  • Thickness, shape, length, sections ⁇ as shown in the drawing ⁇ represent one of the best solution for the functionality, the optimal shape, and overall weight.

Landscapes

  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Ropes Or Cables (AREA)
  • Railway Tracks (AREA)
  • Earth Drilling (AREA)
  • Braking Arrangements (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
  • Basic Packing Technique (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP87907625A 1986-11-17 1987-11-13 Cast iron sleeper with built-in rail anchors Expired - Lifetime EP0334862B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87907625T ATE67539T1 (de) 1986-11-17 1987-11-13 Gusseiserne schwelle mit eingebauten schienenankern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT828187 1986-11-17
IT8682818A IT8682818A0 (it) 1986-11-17 1986-11-17 Traversa in ghisa di fusione con agganci incorporati per binario ferroviario.

Publications (2)

Publication Number Publication Date
EP0334862A1 EP0334862A1 (en) 1989-10-04
EP0334862B1 true EP0334862B1 (en) 1991-09-18

Family

ID=11319501

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87907625A Expired - Lifetime EP0334862B1 (en) 1986-11-17 1987-11-13 Cast iron sleeper with built-in rail anchors

Country Status (23)

Country Link
EP (1) EP0334862B1 (it)
JP (1) JPH02500921A (it)
KR (1) KR890700182A (it)
CN (1) CN1013975B (it)
AT (1) ATE67539T1 (it)
AU (1) AU609434B2 (it)
BG (1) BG50052A3 (it)
DD (1) DD275084A5 (it)
DE (1) DE3773215D1 (it)
DK (1) DK387988D0 (it)
ES (1) ES2005698A6 (it)
FI (1) FI892171A (it)
GR (1) GR871737B (it)
HU (1) HUT54218A (it)
IN (1) IN168978B (it)
IT (1) IT8682818A0 (it)
NO (1) NO883101D0 (it)
PL (1) PL268838A1 (it)
PT (1) PT86152B (it)
TR (1) TR23522A (it)
WO (1) WO1988003973A1 (it)
YU (1) YU207887A (it)
ZA (1) ZA878599B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09327524A (ja) * 1996-06-13 1997-12-22 Hamamatsu Photonics Kk ベッド

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1626082A (en) * 1926-12-14 1927-04-26 William R Halferty Railway tie
US1671877A (en) * 1927-07-02 1928-05-29 Frank J Strzyzewski Rail tie
BE770637A (fr) * 1971-07-29 1971-12-01 Schmitz Charles J E N Perfectionnements aux traverses pour voies de chemin de fer.
DE2410433A1 (de) * 1974-03-05 1975-09-18 Klaus Dipl Ing Dr Hack Eisenbahnschwellen oder andere plattenelemente mit funktionsgerechter formgebung fuer den einschienen- oder doppelschienenverkehr aus einem verbundstoff mit vorwiegend gummielastischen wekrrkstoffeigenschaften
GB1504670A (en) * 1976-10-20 1978-03-22 Andersson J Sleeper

Also Published As

Publication number Publication date
ES2005698A6 (es) 1989-03-16
CN87107900A (zh) 1988-06-15
ZA878599B (en) 1988-05-11
DK387988A (da) 1988-07-12
EP0334862A1 (en) 1989-10-04
WO1988003973A1 (en) 1988-06-02
FI892171A0 (fi) 1989-05-05
ATE67539T1 (de) 1991-10-15
PL268838A1 (en) 1988-07-21
TR23522A (tr) 1990-03-01
DE3773215D1 (de) 1991-10-24
NO883101L (no) 1988-07-12
JPH02500921A (ja) 1990-03-29
NO883101D0 (no) 1988-07-12
GR871737B (en) 1988-03-17
HUT54218A (en) 1991-01-28
IN168978B (it) 1991-08-03
AU609434B2 (en) 1991-05-02
YU207887A (en) 1991-02-28
FI892171A (fi) 1989-05-05
PT86152B (pt) 1994-09-30
PT86152A (pt) 1988-12-15
AU8236987A (en) 1988-06-16
KR890700182A (ko) 1989-03-10
DD275084A5 (de) 1990-01-10
IT8682818A0 (it) 1986-11-17
BG50052A3 (en) 1992-04-15
CN1013975B (zh) 1991-09-18
DK387988D0 (da) 1988-07-12

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