EP0725856A1 - A method of manufacturing concrete sleeper blocks for railroad switch-points, and a matrix and matrix array for use when applying the method - Google Patents
A method of manufacturing concrete sleeper blocks for railroad switch-points, and a matrix and matrix array for use when applying the methodInfo
- Publication number
- EP0725856A1 EP0725856A1 EP93913755A EP93913755A EP0725856A1 EP 0725856 A1 EP0725856 A1 EP 0725856A1 EP 93913755 A EP93913755 A EP 93913755A EP 93913755 A EP93913755 A EP 93913755A EP 0725856 A1 EP0725856 A1 EP 0725856A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- matrix
- matrices
- dishes
- holes
- promontories
- 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
- E01B7/00—Switches; Crossings
- E01B7/22—Special sleepers for switches or crossings; Fastening means therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/005—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects with anchoring or fastening elements for the shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/0064—Moulds characterised by special surfaces for producing a desired surface of a moulded article, e.g. profiled or polished moulding surfaces
Definitions
- the present invention relates to a method of manufactur ⁇ ing concrete sleeper blocks of varying lengths intended for railroad switch-points wherein respective sleeper blocks have a mutually different number of rail attach- ment devices in mutually different positions thereon, said rail attachment devices being mounted in raised surfaces, referred to as promontories on the concrete sleeper block, said promontories preferably having an inclined surface, wherein a number of matrices are placed in a long form bed and concrete is poured into the bed and allowed to cure and harden.
- Inclined rail positions are today a normal standard with conventional concrete sleeper blocks and are becoming increasingly normal in sleeper blocks intended for railroad switch-points.
- the degree of inclination varies in accordance with prevailing standards applied with the railroad system concerned.
- the inclined surface shall have a slope of 1:40.
- the permitted tolerance range is very small, allowing the slope to vary within the limits 1:42-1:38.
- the invention also relates to a matrix and a matrix array for the manufacture of concrete sleeper blocks of the aforesaid kind intended for rail- road switch-points.
- SE,B, 7812505-1 (publication number 415 868) (A-Betong) describes a method of manufacturing concrete sleeper blocks of varying lengths intended for railroad switch- points and having a different number of positions for rail attachment devices.
- This known method involves the use of a number of thin matrices whose lengths corres ⁇ pond to the lengths of the different sleeper blocks and exhibit detachably mounted attachment devices which are placed end-to-end in a long form bed with the attachment devices facing upwards.
- a number of reinforcing lines or corresponding devices are tensioned in the form bed and concrete is poured into the bed and allowed to cure and harden.
- the cured, coherent concrete body is then re ⁇ moved from the concrete form and the matrices are re ⁇ moved from the concrete body and the attachment means moulded therein, whereafter the concrete body is cut into lengths corresponding to the desired lengths of the sleeper blocks.
- the concrete body can be stripped from the form, by lifting the concrete body from the form bed and turning the concrete body prior to removal of the matrices.
- the matrices used with this known method comprise a number of mutually separata flat plates whose widths correspond generally to the upper surface of the sleeper blocks and the lengths of which vary to correspond with the desired length of individual sleeper blocks.
- the matrix plates are provided at predetermined, varying positions with holes for detachably mounting the attach ⁇ ment devices to be moulded in the sleeper blocks.
- switch-point concrete sleeper blocks to which the present invention refers shall be provided with integrated promontories which will enable rails to be mounted in an inclined and in a level position, and that in the former case very high accuracy demands are placed primarily on the degree to which these promontories are inclined.
- EP,A1,0 268 028 (Wayss & Freytag) describes an arrange ⁇ ment for fixating tubular structural parts in sleeper blocks intended for railroad switch-points.
- This ar ⁇ rangement includes a nipple which firmly anchors a pin to a rail attachment part on a form bottom.
- This ref ⁇ cation is not concerned with the manufacture of concrete sleeper blocks with which inclined rail positions are achieved in railroad switch-points.
- one object of the present invention is to provide a method which will enable automated manufacture of switch-point concrete sleeper blocks of the aforesaid kind for inclined rail positions in long form beds and with which the high accuracy requirements placed on the end product can be fulfilled.
- Another object of the invention is to provide a method with which sleeper blocks can be manufactured to the aforesaid degree of accuracy while keeping matrix costs down to a relatively low level.
- Another object of the invention is to provide a method which will enable manufacture of the sleeper blocks to be adapted with the degree of flexibility required by the fact that the lengths of the end products and the positions of the rail-supporting promontories vary with individual sleeper blocks.
- Another object of the invention is to provide a matrix for the manufacture of switch-point concrete sleeper blocks provided with integrated promontories which despite their relatively low costs can be used for long periods of time in the automated, mass production of such concrete sleeper blocks.
- the matrix dishes may be made of a softer material than the matrices themselves, so that the dished recesses or hollows can be formed with the aid of a press tool, the defining sides of these recesses preferably being in- clined to the main part of the matrix.
- the angle to which the recess walls are inclined shall correspond to the value of the inclined rail position in the railroad system concerned, with small tolerances.
- the matrix dishes shall be positioned accurately rela ⁇ tive to the matrices and fixed in said positions prior to securing said elements thereto.
- the matrix dishes may be provided with flanges which are secured to the matrices when the matrices are placed in a form bed.
- the flanges are conveniently provided with guide holes which are fitted over corresponding guide pins in the matrices.
- the matrix dishes can then be secured temporarily prior to being permanently secured to the matrices, for in ⁇ stance welded thereto.
- the matrices are made of a soft material
- the matrices are conveniently reinforced with a reinforcing or stiffening plate on the outer sides thereof.
- This reinforcing or stiffening plate may also be welded to respective matrix dishes.
- the types of attachment devices used in this respect may have different forms and may consist, for instance, of bolts, dowels, pandrol attachment means, etc., depending on the railroad system for which the sleeper block is intended.
- the longitudinal extension of the holes will preferably define an angle of between 0 and about 10° to the longi ⁇ tudinal axis of the matrices, meaning that the rail attachment devices will preferably be placed centrally along the matrix dishes.
- the matrix dishes may be manufactured from material other than steel, for instance extruded plastic material.
- the sleeper blocks In many cases it is convenient to provide the sleeper blocks with a drainage channel, which is taken into account in conjunction with configuring the matrices and the matrix dishes prior to placing said matrices and said dishes in the form bed.
- the angle at which the matrix dishes are inclined and the depths to which said dishes are dished can be varied to correspond to different types of railtrack systems. For instance, the lengths of the matrix dishes will preferably be longer in the case of more robust rails than would otherwise be the case.
- the matrix dishes are suitably secured to the upper sides of respective matri ⁇ ces when the matrices are positioned in the form bed. In some cases, however, the matrix dishes may be secured to the undersides of the matrices.
- the invention also relates to a matrix which is used in the aforedescribed method of manufacturing concrete sleeper blocks, said matrix being characterized mainly by the features set forth in Claim 7.
- the invention also relates to a matrix array for the manufacture of switch-point concrete sleeper blocks, the main features of the matrix array being set forth in Claim 11.
- Figure 1 is a perspective view of a matrix dishes ele ⁇ ment for use together with a matrix in the manufacture of a switch-point concrete sleeper block.
- Figure 2 is a sectional view of the matrix dishes ele ⁇ ment, taken on the line II-II in Figure 1.
- Figure 3 is a perspective view of a perforated matrix for the manufacture of sleeper blocks of the aforesaid kind, said matrix being intended to receive a number of matrix dishes shown in Figures 1 and 2.
- Figure 4 is a perspective view of part of a long form bed intended for the manufacture of concrete sleeper blocks, and shows a matrix and a matrix dish attached thereto placed in the bottom of the form bed.
- Figure 5 is a perspective view of a switch-point con ⁇ crete sleeper block manufactured with the aid of the matrix shown in Figure 4.
- Figure 6 is an end view of the concrete sleeper block shown in Figure 5.
- Figure 7 is a perspective view which illustrates the configuration and application of two mutually adjacent matrix dishes fitted to a matrix.
- the illustrated form bed used with the present invention has, in practice, a length which exceeds the values recited in these publications and may have a length of 150 m or longer for instance, and also that the number of matrices included in a matrix array of the kind concerned here may also exceed the values recited in said publications, and may comprise in num- ber, for instance, between 200 and 250 matrices, depend ⁇ ing on the railroad system concerned and the type of switch-point for which the concrete sleeper blocks are intended.
- the rail attachment devices cast in the blocks shall be located on promontories, or raised members, preferably on prom ⁇ ontories that have a sloping surface and are intended to enable rails to be laid in inclined positions.
- promontories may have a horizontal surface and shall be integrated in the sleeper blocks, and to this end those matrices 1 which are intended to be placed at the bottom of the form bed in which the sleeper blocks are cast are provided with elongated holes with rounded defining surfaces, as shown in Figure 3. Matrix dishes or trays 3 of the general kind illustrated in Figures 1 and 2 are mounted in these holes.
- the matrices have mutually the same thickness and width but vary in length and the holes in respective matrices are positioned differently in respective matrices, among other things depending on where the sleeper block being manufactured shall be placed in the track region of the switch-point concerned.
- the matrix dishes 3 have asymmetric dished or recessed portions 3a which are intended to form in the sleeper block promontories or raised surfaces that have sloping surfaces.
- the matrix dishes are made from a grade of steel which can be press-shaped and which will enable the matrix dishes to be manufactured by stretching or pressing operations, with the aid of suitably configured tools.
- the matrix dishes 3 have circumferentially extending flanges 3b which are intended to bottom against the regions that lie adjacent the hole edges of the matrices when the matrix dishes are inserted into the holes.
- the sleeper blocks, and not least their promontories, must be manufactured extremely accurately, and conse ⁇ quently it is highly essential that the matrix dishes are positioned and fixed accurately in the holes before being secured to the matrices.
- the dish flanges 3b are provided with guide holes 5 for coaction with pins (not shown) outstanding from the matrices, so as to enable the matrix dishes to be guided to correct positions when inserted into the holes.
- the dishes Prior to securing the matrix dishes, which is normally effected by welding the dishes to respective matrices, the dishes are conveniently fixed in their correct positions with the aid of clamping devices.
- the matrix dishes are provided with holes 4 for receiv ⁇ ing anchoring devices 12 (cf Figure 4) for attachment devices which function to hold the rails on the sleeper blocks. These anchoring devices 12 are embedded in the concrete sleeper blocks.
- the matrix dishes 3 are made of a softer grade of steel than the matrices, as beforementioned, the dishes are provided with a central reinforcing or stiffening plate 3c.
- Figure 4 illustrates a part of a form bed in which a matrix 1 onto which a matrix dish 3 has been welded is shown in a position in which it forms the bottom of the form bed.
- a plurality of similar matrices of varying lengths are placed adjacent one another in the manner described in the aforesaid earlier published specifica ⁇ tions.
- Figure 4 shows two parts of a matrix 1 which has been cut through the middle. It will be understood ,however, that although not shown a further two matrix dishes are inserted in this cut-away area.
- the matrix dishes inserted in the holes in the matrices 1 are welded to the matrices.
- Figure 4 illustrates one such seam weld.
- Alternative welding methods, for in- stance spot welding, are also conceivable in this re ⁇ gard.
- the matrix dishes may be glued to respective matrices.
- Figure 5 illustrates a finished concrete element that has been manufactured in the form bed.
- the concrete element is referenced 10 and the raised surfaces or promontories formed by the matrix dishes and exhibiting sloping upper surfaces are referenced 10a.
- Figure 5 also shows anchoring devices 12 for anchoring rail attachment devices.
- Figure 6 is an end view of the sleeper block 10 shown in Figure 5 provided with a promontory 10a and an anchoring device 12 embedded in the sleeper block, said anchoring device having an anchoring part 12a which extends within said block.
- Figure 7 illustrates an embodiment of the invention in which a matrix 1 has two dish receiving holes located close together.
- the matrix dishes will therefore en ⁇ croach upon each other's space and it is necessary to modify the mutually facing end parts of the dishes.
- a matrix array which includes a plurality of matri ⁇ ces 1 to which matrix dishes have been fitted and which have essentially the same width but varying lengths, and in which the positions of those holes in which the matrix dishes 3 are mounted may vary.
- the number of matrices used in such a matrix array can vary within wide limits, depending on the track system concerned and the characteristics of the switch-point in question.
- the angle at which the upper surface of the promontories on the manufactured sleeper blocks is inclined may also vary. According to American practice, the degree of inclination is 1:40, whereas according to Swedish and
- the invention can also be applied to provide sleeper blocks with promontories or raised surfaces which have generally horizontal surfaces, i.e. which do not slope.
- the matrix dishes are adapted accordingly and may have a generally symmetrical configuration.
- the invention can also be applied in those cases in which the matrices are placed in the form bed so as to coincide with a vertical plane, i.e. so that the promon ⁇ tories on the matrix dishes project out from one side of respective matrices.
- This method of manufacturing sleep ⁇ er blocks is normally applied in the United Kingdom, among other countries.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Railway Tracks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9201889 | 1992-06-18 | ||
SE9201889A SE470359B (en) | 1992-06-18 | 1992-06-18 | Methods of manufacture of a concrete gear grinder block as well as matrix and matrix set for use in application of the method |
PCT/SE1993/000534 WO1993025756A1 (en) | 1992-06-18 | 1993-06-16 | A method of manufacturing concrete sleeper blocks for railroad switch-points, and a matrix and matrix array for use when applying the method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0725856A1 true EP0725856A1 (en) | 1996-08-14 |
EP0725856B1 EP0725856B1 (en) | 2000-05-10 |
Family
ID=20386543
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93913755A Expired - Lifetime EP0725856B1 (en) | 1992-06-18 | 1993-06-16 | A method of manufacturing concrete sleeper blocks for railroad switch-points, and a matrix and matrix array for use when applying the method |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0725856B1 (en) |
AT (1) | ATE192804T1 (en) |
AU (1) | AU668961B2 (en) |
DE (1) | DE69328632D1 (en) |
FI (1) | FI98396C (en) |
NO (1) | NO304319B1 (en) |
SE (1) | SE470359B (en) |
WO (1) | WO1993025756A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10219331A1 (en) * | 2002-04-30 | 2003-11-13 | Leonhard Moll Betonwerke Gmbh | Correction device for correcting support elements embedded in concrete sleepers |
FR2907809B1 (en) * | 2006-10-25 | 2011-07-08 | Vossloh Cogifer | DEVICE FOR THE DIRECT FASTENING OF A RAIL TO A CONCRETE SUPPORT |
CN101121281B (en) * | 2007-08-03 | 2010-05-19 | 中铁十四局集团有限公司 | High-speed switch sleeper long line method construction prestressed rib positioning device |
AT514166B1 (en) * | 2013-04-10 | 2015-08-15 | Voestalpine Weichensysteme Gmbh | Track section for rail vehicles |
CN105155367B (en) * | 2015-08-13 | 2017-03-15 | 中铁十一局集团有限公司 | A kind of installation system and installation method for magnetic-levitation |
DE102017125152B4 (en) | 2017-06-23 | 2021-01-28 | Leonhard Moll Betonwerke Gmbh & Co Kg | Process for the production of prestressed concrete sleepers or prestressed concrete switch rails |
PL3424662T3 (en) | 2017-06-23 | 2021-11-08 | Leonhard Moll Betonwerke Gmbh & Co Kg | Method for producing prestressed concrete parts |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB913090A (en) * | 1960-12-07 | 1962-12-19 | Dow Mac Products Ltd | A method of moulding concrete sleepers with embedded hoops |
FR2401272A1 (en) * | 1977-08-26 | 1979-03-23 | Costamagna & Cie B M | IMPROVEMENTS IN THE MANUFACTURING BY MOLDING OF CONCRETE RAILWAY TIES |
SE404996B (en) * | 1978-01-13 | 1978-11-13 | Straengbetong Ab | DEVICE FOR CONCRETE MOLDS |
SE415868B (en) * | 1978-12-05 | 1980-11-10 | A Betong Ab | SET TO MANUFACTURE CONCRETE SLIPPING BULK AND MATERIAL SETUP FOR EXECUTION OF THE SET |
IT1151920B (en) * | 1982-07-09 | 1986-12-24 | Betong Ab Sabema Material Ab A | METHOD FOR THE PRODUCTION OF CONCRETE BEAMS AND SERIES OF DIES TO REALIZE THIS METHOD |
-
1992
- 1992-06-18 SE SE9201889A patent/SE470359B/en not_active IP Right Cessation
-
1993
- 1993-06-16 AT AT93913755T patent/ATE192804T1/en not_active IP Right Cessation
- 1993-06-16 EP EP93913755A patent/EP0725856B1/en not_active Expired - Lifetime
- 1993-06-16 WO PCT/SE1993/000534 patent/WO1993025756A1/en active IP Right Grant
- 1993-06-16 DE DE69328632T patent/DE69328632D1/en not_active Expired - Lifetime
- 1993-06-16 AU AU43675/93A patent/AU668961B2/en not_active Expired
-
1994
- 1994-12-16 NO NO944900A patent/NO304319B1/en unknown
- 1994-12-16 FI FI945930A patent/FI98396C/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9325756A1 * |
Also Published As
Publication number | Publication date |
---|---|
FI945930A (en) | 1994-12-16 |
NO304319B1 (en) | 1998-11-30 |
AU668961B2 (en) | 1996-05-23 |
SE9201889D0 (en) | 1992-06-18 |
WO1993025756A1 (en) | 1993-12-23 |
NO944900D0 (en) | 1994-12-16 |
NO944900L (en) | 1994-12-16 |
FI945930A0 (en) | 1994-12-16 |
FI98396C (en) | 1997-06-10 |
SE470359B (en) | 1994-01-31 |
SE9201889L (en) | 1993-12-19 |
FI98396B (en) | 1997-02-28 |
EP0725856B1 (en) | 2000-05-10 |
AU4367593A (en) | 1994-01-04 |
ATE192804T1 (en) | 2000-05-15 |
DE69328632D1 (en) | 2000-06-15 |
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