AU8236987A - Cast iron sleeper with built-in rail anchors - Google Patents
Cast iron sleeper with built-in rail anchorsInfo
- Publication number
- AU8236987A AU8236987A AU82369/87A AU8236987A AU8236987A AU 8236987 A AU8236987 A AU 8236987A AU 82369/87 A AU82369/87 A AU 82369/87A AU 8236987 A AU8236987 A AU 8236987A AU 8236987 A AU8236987 A AU 8236987A
- Authority
- AU
- Australia
- Prior art keywords
- sleeper
- previous
- fact
- built
- anchorages
- 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
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
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)
- Earth Drilling (AREA)
- Railway Tracks (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Braking Arrangements (AREA)
- Basic Packing Technique (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Clamps And Clips (AREA)
- Connection Of Plates (AREA)
- Joining Of Building Structures In Genera (AREA)
Abstract
Rail sleeper (1), directly obtained by cast iron, with built in anchorages (hooks) (2), suitable to be used for tracks locking. Cast anchorages (hooks) (2), built in with the rail sleeper (1), guarantee the locking with no need of fastening movable plates, while ensuring the anticipated gauge already at the casting stage. The adopted material guarantees resistance and non-wearing in the long term.
Description
Cast iron sleeper with built-in rail anchors.
This invention has, as a subject, a cast iron sleeper with built in anchorages (hooks) for rail track. It is known that - at present - the most used rail sleeper is in wood, of the most different kinds, suitably treated and processed, on which the track linking items are set.
The average life of the wood sleeper ranges between 15-20 years.
The continuous increases in costs, and the procurement difficulty - to a very large extent, it is import wood - required to replace this typical part of the track.
Futhermore, there also exists the sleeper made up of pre-compressed reinforced concrete - with built in wooden wedges - to fix - by screwing up the dowels - the anchoring plates on which the track shall be locked.
Said pre-compressed reinforced concrete sleeper has replaced wood in its function of stress distributor, but it has kept the need to separately arrange anchorages, prior to a preparation, seasoning, impregnation, and bituminization work on the sleeper; all this is definitely expensive.
There exists, even though it is going to be finally neglected, the steel sleeper, obtained by hot forging and holed for the fitting of locking items; it is not widely used both for the high cost, and for the packing of sleepers difficulty, since this type of sleeper discharges stresses on the short edges of the same, and does not totally lay on the ballast.
The subject invention - obtained by casting - allows to obtain a rail sleeper 1 with well-defined mechanical characteristics, able to meet - in a very optimal way - the necessary principles of strenght and resistance of the track to the pressure specific stresses, distributing them on a wide surface, and allowing - by
using anchorages 2 obtained by casting (in a single piece, with the rail track 1 casting) - the track locking by the classical dogs and plate system.
As for the intrinsic characteristics of the material, the cast iron rail sleeper 1 of the subject 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 strenght suitable to heavy and very fast traffic; it does not require the plates anchorages arrangement, since they already are obtained by casting.
Furthermore, it has further and important advantages, with respect to the traditional types of sleepers. Already during the casting, the anticipated gauge is obtained, the anchoring (hook), being a casting product, does not shift (on the contrary to what happens with all used types: possible shifting of bolts, dowels, etc., due to vibrations and material wear); the gauge is fix and set; mainte nance is practically unnecessary; safety is maximum. We wish to state - as an example - that the shape relative to casting of the cast iron sleeper is prepared with the moulding in stop block of a sand + resin mixture. The model is removed, and the cores relative to the cast brackets are inserted. Cores vary in accordance to the anchorages (hooks) geometry, able to meet the supply required variables. The mould is painted and, after the hardening of the forming mixture, is prepared for the pouring stage.
The liquid cast iron - thanks to analyses suitable to the cast required mechanical characteristics - is poured in the mould, which - once the hardening process is finished - is shaken out and deburred. If necessary, a mechanical process is carried out to give anchorages (hooks) the precise required geometry in the coupling with
fastening dogs.
It is then so obtained a cast iron sleeper 1 with built in anchorages (hooks) for rail track.
It can be added, that said sleeper 1 can have any section (if anticipated cast anchorages (hooks) are built in).
Moreover, said sleeper 1 can totally be hollow, with different thicknesses, and completely filled up with inert material (for example: sand), in order to dampen vibrations, and so obviously obtaining a lighter cast. The invention shall be better understood following the enclosed drawing, which shows a practical and schematic example of manufacture of the invention itself. 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 solutions with respect to the functionality, the optimal shape, and also with respect to the overall weight.
We therefore point out that what described and shown in Table 1 is a practical and schematic example of the invention, since its shapes, dimensions, manufacturing and material details can vary, without forgetting the inspiring and building principle of the invention itself.
Claims (1)
- Claims1) Cast iron sleeper with built in anchorages (hooks) for rail track, characterized by the fact of being made up of a rail sleeper (1), and of anchorages (2); the whole is cast obtained and therefore forming a single piece.2) According to the previous claim, the sleeper is characterized by the fact of having long term well-defined mechanical characteristics meeting the necessary, constant principles of strength and resistance. 3) According to the previous claims, the sleeper is characterized by the fact of having a seemingly unlimited life.4) According to the previous claims, the sleeper is characterized by the fact that - thanks to its very homogeneous structure - it optimally distributes stresses. 5) According to the previous claims, the sleeper is characterized by the fact it gives the track a strength suitable to heavy and very fast traffic.6) According to the previous claims, the sleeper is characterized by the fact that it does not need the arrangement of anchoring plates (2), these being already cast built.7) According to the previous claims, the sleeper is characterized by the fact that - already at the casting stage - the anticipated gauge is obtained.8) According to the previous claims, the sleeper is characterized by the fact that anchorages (2) - being manufactured by casting - do not shift, and the gauge is set and fixed.9) According to the previous claims, the sleeper totally corresponds to what described and shown in the enclosed drawing.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8682818A IT8682818A0 (en) | 1986-11-17 | 1986-11-17 | CAST IRON CROSSPIECE WITH INCORPORATED HOOKS FOR RAILWAY TRACK. |
IT82818/86 | 1986-11-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU8236987A true AU8236987A (en) | 1988-06-16 |
AU609434B2 AU609434B2 (en) | 1991-05-02 |
Family
ID=11319501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU82369/87A Ceased AU609434B2 (en) | 1986-11-17 | 1987-11-13 | Cast iron sleeper with built-in rail anchors |
Country Status (23)
Country | Link |
---|---|
EP (1) | EP0334862B1 (en) |
JP (1) | JPH02500921A (en) |
KR (1) | KR890700182A (en) |
CN (1) | CN1013975B (en) |
AT (1) | ATE67539T1 (en) |
AU (1) | AU609434B2 (en) |
BG (1) | BG50052A3 (en) |
DD (1) | DD275084A5 (en) |
DE (1) | DE3773215D1 (en) |
DK (1) | DK387988D0 (en) |
ES (1) | ES2005698A6 (en) |
FI (1) | FI892171A (en) |
GR (1) | GR871737B (en) |
HU (1) | HUT54218A (en) |
IN (1) | IN168978B (en) |
IT (1) | IT8682818A0 (en) |
NO (1) | NO883101D0 (en) |
PL (1) | PL268838A1 (en) |
PT (1) | PT86152B (en) |
TR (1) | TR23522A (en) |
WO (1) | WO1988003973A1 (en) |
YU (1) | YU207887A (en) |
ZA (1) | ZA878599B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09327524A (en) * | 1996-06-13 | 1997-12-22 | Hamamatsu Photonics Kk | Bed |
Family Cites Families (5)
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 (en) * | 1971-07-29 | 1971-12-01 | Schmitz Charles J E N | IMPROVEMENTS AT CROSSINGS FOR RAILWAY TRACKS. |
DE2410433A1 (en) * | 1974-03-05 | 1975-09-18 | Klaus Dipl Ing Dr Hack | Railway sleeper for single or double track traffic - is made of composite, elastic material and has indentations for insertion of rails |
GB1504670A (en) * | 1976-10-20 | 1978-03-22 | Andersson J | Sleeper |
-
1986
- 1986-11-17 IT IT8682818A patent/IT8682818A0/en unknown
-
1987
- 1987-11-13 IN IN896/CAL/87A patent/IN168978B/en unknown
- 1987-11-13 DD DD87309024A patent/DD275084A5/en not_active IP Right Cessation
- 1987-11-13 WO PCT/IT1987/000097 patent/WO1988003973A1/en active IP Right Grant
- 1987-11-13 AU AU82369/87A patent/AU609434B2/en not_active Ceased
- 1987-11-13 EP EP87907625A patent/EP0334862B1/en not_active Expired - Lifetime
- 1987-11-13 JP JP62507105A patent/JPH02500921A/en active Pending
- 1987-11-13 AT AT87907625T patent/ATE67539T1/en not_active IP Right Cessation
- 1987-11-13 HU HU876157A patent/HUT54218A/en unknown
- 1987-11-13 GR GR871737A patent/GR871737B/en unknown
- 1987-11-13 DE DE8787907625T patent/DE3773215D1/en not_active Expired - Fee Related
- 1987-11-16 PL PL26883887A patent/PL268838A1/en unknown
- 1987-11-17 TR TR762/87A patent/TR23522A/en unknown
- 1987-11-17 YU YU02078/87A patent/YU207887A/en unknown
- 1987-11-17 PT PT86152A patent/PT86152B/en not_active IP Right Cessation
- 1987-11-17 ZA ZA878599A patent/ZA878599B/en unknown
- 1987-11-17 ES ES8703281A patent/ES2005698A6/en not_active Expired
- 1987-11-17 CN CN87107900A patent/CN1013975B/en not_active Expired
-
1988
- 1988-07-12 DK DK387988A patent/DK387988D0/en not_active Application Discontinuation
- 1988-07-12 KR KR1019880700814A patent/KR890700182A/en not_active Application Discontinuation
- 1988-07-12 NO NO883101A patent/NO883101D0/en unknown
-
1989
- 1989-05-05 FI FI892171A patent/FI892171A/en not_active Application Discontinuation
- 1989-06-16 BG BG88866A patent/BG50052A3/en unknown
Also Published As
Publication number | Publication date |
---|---|
ES2005698A6 (en) | 1989-03-16 |
CN87107900A (en) | 1988-06-15 |
ZA878599B (en) | 1988-05-11 |
DK387988A (en) | 1988-07-12 |
EP0334862A1 (en) | 1989-10-04 |
WO1988003973A1 (en) | 1988-06-02 |
FI892171A0 (en) | 1989-05-05 |
ATE67539T1 (en) | 1991-10-15 |
PL268838A1 (en) | 1988-07-21 |
TR23522A (en) | 1990-03-01 |
DE3773215D1 (en) | 1991-10-24 |
NO883101L (en) | 1988-07-12 |
JPH02500921A (en) | 1990-03-29 |
NO883101D0 (en) | 1988-07-12 |
GR871737B (en) | 1988-03-17 |
HUT54218A (en) | 1991-01-28 |
IN168978B (en) | 1991-08-03 |
AU609434B2 (en) | 1991-05-02 |
YU207887A (en) | 1991-02-28 |
FI892171A (en) | 1989-05-05 |
PT86152B (en) | 1994-09-30 |
PT86152A (en) | 1988-12-15 |
KR890700182A (en) | 1989-03-10 |
DD275084A5 (en) | 1990-01-10 |
IT8682818A0 (en) | 1986-11-17 |
BG50052A3 (en) | 1992-04-15 |
EP0334862B1 (en) | 1991-09-18 |
CN1013975B (en) | 1991-09-18 |
DK387988D0 (en) | 1988-07-12 |
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