WO2003101693A1 - Appareil et procede de fabrication de traverses - Google Patents

Appareil et procede de fabrication de traverses Download PDF

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Publication number
WO2003101693A1
WO2003101693A1 PCT/AU2002/000698 AU0200698W WO03101693A1 WO 2003101693 A1 WO2003101693 A1 WO 2003101693A1 AU 0200698 W AU0200698 W AU 0200698W WO 03101693 A1 WO03101693 A1 WO 03101693A1
Authority
WO
WIPO (PCT)
Prior art keywords
cast
components
mould
shoulders
holes
Prior art date
Application number
PCT/AU2002/000698
Other languages
English (en)
Inventor
Lawrence Marcus Hadley
David John Leslie Priddle
Original Assignee
Austrak Pty Ltd
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 Austrak Pty Ltd filed Critical Austrak Pty Ltd
Priority to NZ536615A priority Critical patent/NZ536615A/en
Priority to AU2002308444A priority patent/AU2002308444B2/en
Priority to PCT/AU2002/000698 priority patent/WO2003101693A1/fr
Publication of WO2003101693A1 publication Critical patent/WO2003101693A1/fr

Links

Classifications

    • 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
    • B28B23/0056—Means for inserting the elements into the mould or supporting them in the mould

Definitions

  • This invention relates to an apparatus and method for manufacturing sleepers.
  • the invention relates to a method of forming concrete sleepers with pre-staged shoulders and therefore will be described in this context.
  • other settable materials such as composites, rubber and polyurethane's and other types of cast-in components may be used with the apparatus and method.
  • One production method for concrete sleepers that uses pre- staged sleepers incorporates the use of polyurethane mouldings that are fixed to a sleeper mould.
  • the pre-staged shoulders are manually pushed into the polyurethane mouldings to hold the shoulders in a desired position when concrete is poured into the mould.
  • the invention resides in an apparatus for manufacturing sleepers, the apparatus comprising: a mould for location of a settable material, said mould including a base having at least a pair of holes for location of two cast-in components; an engagement mechanism to engage said components that are located within the holes; and a spacer located between the cast-in components to space the cast-in components at a predetermine distance from each other; wherein the engagement mechanism exerts a longitudinal force and a normal force with respect to the base on said cast-in components to hold the cast-in components in a predetermined position within the mould.
  • the cast-in components may be shoulders. Normally, the shoulders are pre-staged shoulders.
  • the settable material is usually concrete. However, other settable materials such as composites, rubber and polyurethane's may be used.
  • the holes may be sized so that there is clearance between the holes and the shoulders during demoulding. Preferably, there is clearance between at least the front and back sides of the holes.
  • the engagement mechanism may include a pair of engagement members.
  • Each engagement member may be a spring.
  • each engagement member is a leaf spring.
  • the pair of engagement members may be rotatable.
  • each engagement member is mounted to a separate shaft.
  • An actuator may rotate the shafts.
  • the actuator may incorporate a push-pin attached to a cam.
  • the spacer is preferably a gauging plate.
  • the gauging plate is attached to the actuator. More preferably, the gauging plate is attached to the push-pin.
  • the gauging plate and engagement members are moved simultaneously.
  • a leading edge of the gauging plate is shaped to allow the plate to slide against the pair of pre-staged shoulders.
  • the leading edge of the plate is bevelled at its corners.
  • the invention resides in a method for manufacturing sleepers, the method comprising the steps of: locating a pair of cast-in components within a pair of holes located within a base of a mould; engaging the cast-in components using an engagement mechanism to exert a longitudinal force and a normal force on said cast-in components to hold the shoulders in a predetermined position within the mould; spacing the cast-in components using a spacing means a predetermined distance from each other; and pouring settable material into the mould.
  • the method of manufacturing the sleepers may include the additional step of demoulding the sleeper from the mould so that the cast-in components do not rub against the mould.
  • the engaging and spacing of the cast-in components occurs simultaneously.
  • the invention resides in a sleeper made by the above method and/or apparatus.
  • FIG. 1 is a perspective view of an underside of an apparatus to manufacture concrete sleepers according to an embodiment of the invention
  • FIG. 2 is a side cross-sectional view of the apparatus for manufacturing concrete sleeper according to FIG. 1 ;
  • FIG. 3 is a top view of the apparatus for manufacturing concrete sleepers according to FIG. 1 ;
  • FIG .4 is a top view of an engagement mechanism according to an embodiment of the invention.
  • FIG. 5 is a side view of the engagement mechanism according to FIG. 4;
  • FIG. 6 is an end view of the apparatus for manufacturing concrete sleepers in an unlocked position
  • FIG. 7 is an end view of the apparatus for manufacturing concrete sleepers in a first position
  • FIG. 8 is an end view of the apparatus for manufacturing concrete sleepers in a locked position
  • FIG. 9 is a perspective view of a sleeper constructed using the apparatus of FIG. 1.
  • FIG. 1 An apparatus 10 for manufacturing concrete sleepers is shown in FIG. 1 , FIG. 2 and FIG. 3 comprising four concrete moulds 100 and two engagement mechanisms 200.
  • the concrete sleeper 11 that isproduced is shown in FIG. 9.
  • Each mould 100 is made of standard material, such as iron, and is used to produce a single concrete sleeper.
  • a pair of holes 110 and 120 are made of standard material, such as iron, and is used to produce a single concrete sleeper.
  • Each hole 110 and 111 is sized so that a pre-staged shoulder
  • the 300 can be easily located within the holes 110 and 111 with substantial clearance at the front side 112 and back side 113 of each of the holes.
  • the engagement mechanism 200 includes a push-pin 210 that is attached to a base 101 of the mould 100 by attachment plates 220.
  • the push-pin 210 is able to be reciprocated with respect to the attachment plates 220. Further details of the push-pin 210 are shown in FIG. 4 and FIG. 5.
  • Two shafts 230 located on opposite sides of the push-pin 210, extend through the attachment plates 220. The two shafts 230 are rotatable with respect to the attachment plates 220.
  • Two cams 240 are attached to the push-pin 210. Each cam
  • 240 has a slot 241 in which is located a lever 250.
  • Each lever 250 is attached to a different shaft 230. Reciprocation of the push-pin causes the levers 250 to move within the cams 240 to further cause the shafts 230 to be rotated.
  • leaf springs 260 are attached to and spaced along the length of each of the shafts 230.
  • the leaf springs 260 are attached to the shafts using nuts and bolts 262.
  • Each leaf spring 260 is curved adjacent an end to allow engagement of the leaf spring with a recess located within a pre-staged shoulder 300.
  • the gauging plates 270 are attached to the push-pin 210 between the push-pin 210 and the moulds 100.
  • the gauging plates 270 are arranged such that movement of the push-pin 210 causes the gauging plates 270 to cover a portion of the pairs of holes 110 and 111.
  • the gauging plates 270 are substantially rectangular in shape with corners 271 of the leading edge 272 being bevelled.
  • a concrete sleeper is produced using the apparatus by manually inserting pre-staged shoulders 300 in the holes 110 and 111 in the mould 100 as shown in FIG. 6.
  • the pre-staged shoulders 300 are easily located with the holes 110 and 111 due to the clearance provided by the holes 110 and 111.
  • the push-pin 200 is then moved causing the slots 241 located within cams 240 to act upon the respective levers 250.
  • the levers 250 then causes rotation of the shafts 230 and leaf springs 260.
  • the gauging plates 270 are also moved by the push-pin 210 to position between the gauging plate 270 and respective pairs of pre-stagged shoulders 300 and over a portion of the holes 110 and 111.
  • the gauging plates 270 are dimensioned and located between the pre-staged shoulders 300 so as to correlate with the required final cast position of the pre-staged shoulders 300 with respect to the desired rail gauge and rail width.
  • the leaf springs 260 As the leaf springs 260 are rotated, they contact respective pre- staged shoulders 300 as shown in FIG. 7. At the point of contact between each leaf spring 270 and the pre-staged shoulder 300, the direction of the force is mainly horizontal causing the pre-staged shoulder 300 to slide horizontally within the hole 110. As the shaft 230 continues to rotate, pre- stagged shoulder 300 moves until it abuts against the gauging plate 270. The gauging plate 270 has a two-point contact with the pre-stagged shoulder 300 whilst the leaf spring 260 has a single point of contact with pre-staged shoulder 300. This creates a self-aligning effect for the pre-staged shoulder 300.
  • the holes 110 and 111 are sized so that the base 101 of the mould 100 that extends with the mould 100 between two adjacent pre-staged shoulders 300 is of a smaller spacing than that provided by the gauging plate 270. Hence a gap 280 is created between the base 101 of the mould 100 and the pre-staged shoulder 300.
  • the direction of the leaf spring 260 force changes from horizontal to vertical. This change in force direction is created by the arc of rotation of the leaf spring 260, and the dimension strain of the leaf spring 260 bends and is pulled downward by the shaft.
  • the bending strength of the leaf spring 260 is selected to provide a balance between strong horizontal push force and a slow rate of build up of vertical holding force.
  • the cam 240 is designed so that the leaf spring 260 remains engaged without the need to continually apply force to the push-pin 210.
  • the pre-staged shoulder 300 is held in position via a downward vertical force creating a friction resistance to movement as shown in FIG. 8. Concrete is then placed within the mould 100. As the pre- staged shoulders 300 are held tightly to the base 101 of the mould 100, there is little or no leakage of concrete through the respective holes 110 and 111. Once the concrete has set, the leaf springs 260 are disengaged from the pre-staged shoulders 300 by moving the push-pin 210 in the opposite direction and sequence of operation for the engagement mechanism 200 is reversed.
  • the apparatus for manufacturing concrete mould 100 is relatively inexpensive to produce. An unskilled person can locate the pre- stagged shoulders 300 within the holes 110 and 111 in the mould 100 as the engagement mechanism ensures that the pre-staged shoulders 300 are located in their desired position regardless of their initial placement within the holes 110 and 111.

Abstract

La présente invention concerne un appareil de fabrication de traverses. Cet appareil comprend: un moule destiné à placer une matière durcissable, ce moule comprenant une base possédant au moins une paire de trous destinés à placer deux éléments coulés, un mécanisme de mise en contact destiné à entrer en contact avec ces deux éléments coulés situés à l'intérieur des trous, et une entretoise située entre ces deux éléments coulés destinée à espacer l'un de l'autre ces éléments coulés d'une distance prédéterminée. Le mécanisme de mise en contact exerce une force longitudinale et une force orthogonale par rapport à la base de ces éléments coulés de façon à tenir ces éléments coulés dans une position prédéterminée à l'intérieur du moule.
PCT/AU2002/000698 2002-05-31 2002-05-31 Appareil et procede de fabrication de traverses WO2003101693A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NZ536615A NZ536615A (en) 2002-05-31 2002-05-31 An apparatus and method for manufacturing sleepers
AU2002308444A AU2002308444B2 (en) 2002-05-31 2002-05-31 An apparatus and method for manufacturing sleepers
PCT/AU2002/000698 WO2003101693A1 (fr) 2002-05-31 2002-05-31 Appareil et procede de fabrication de traverses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AU2002/000698 WO2003101693A1 (fr) 2002-05-31 2002-05-31 Appareil et procede de fabrication de traverses

Publications (1)

Publication Number Publication Date
WO2003101693A1 true WO2003101693A1 (fr) 2003-12-11

Family

ID=29588477

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2002/000698 WO2003101693A1 (fr) 2002-05-31 2002-05-31 Appareil et procede de fabrication de traverses

Country Status (2)

Country Link
AU (1) AU2002308444B2 (fr)
WO (1) WO2003101693A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2435285A (en) * 2006-02-21 2007-08-22 Pandrol Ltd Fastening railway rails
KR100750387B1 (ko) 2006-10-14 2007-08-27 주식회사 삼안 이중 결속클립을 이용한 철도 레일 체결장치

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387181A (en) * 1972-04-05 1975-03-12 Dow Mac Concrete Ltd Manufacture of railway sleepers
US4666123A (en) * 1985-05-09 1987-05-19 Genji Abe Fixture for making railroad ties
US4717114A (en) * 1985-07-10 1988-01-05 Monier Limited Concrete sleeper mould
WO1996026820A1 (fr) * 1995-02-28 1996-09-06 Grimbergen Holding B.V. Moule de mise en forme pour la fabrication de traverses de voie ferree
GB2328176A (en) * 1997-08-14 1999-02-17 Tarmac Uk Ltd A moulding apparatus for a concrete article having an insert

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1387181A (en) * 1972-04-05 1975-03-12 Dow Mac Concrete Ltd Manufacture of railway sleepers
US4666123A (en) * 1985-05-09 1987-05-19 Genji Abe Fixture for making railroad ties
US4717114A (en) * 1985-07-10 1988-01-05 Monier Limited Concrete sleeper mould
WO1996026820A1 (fr) * 1995-02-28 1996-09-06 Grimbergen Holding B.V. Moule de mise en forme pour la fabrication de traverses de voie ferree
GB2328176A (en) * 1997-08-14 1999-02-17 Tarmac Uk Ltd A moulding apparatus for a concrete article having an insert

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2435285A (en) * 2006-02-21 2007-08-22 Pandrol Ltd Fastening railway rails
US7845578B2 (en) 2006-02-21 2010-12-07 Pandrol Limited Railway rail fastening clip
US7954727B2 (en) 2006-02-21 2011-06-07 Pandrol Limited Anchoring devices for rail fastening clips
US8146835B2 (en) 2006-02-21 2012-04-03 Pandrol Limited Sealing plate for railway rail clip anchoring device and sleeper manufacturing method
KR100750387B1 (ko) 2006-10-14 2007-08-27 주식회사 삼안 이중 결속클립을 이용한 철도 레일 체결장치

Also Published As

Publication number Publication date
AU2002308444B2 (en) 2007-09-20
AU2002308444A1 (en) 2003-12-19

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