US3827132A - Prestressed rod laying means and method - Google Patents

Prestressed rod laying means and method Download PDF

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Publication number
US3827132A
US3827132A US00295921A US29592172A US3827132A US 3827132 A US3827132 A US 3827132A US 00295921 A US00295921 A US 00295921A US 29592172 A US29592172 A US 29592172A US 3827132 A US3827132 A US 3827132A
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US
United States
Prior art keywords
wires
series
block
bay
apertures
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
US00295921A
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English (en)
Inventor
R Bratchell
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.)
CONCRETE IND LTD AU
Monier Concrete Industries Ltd
Original Assignee
Monier Concrete Industries 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 Monier Concrete Industries Ltd filed Critical Monier Concrete Industries Ltd
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Publication of US3827132A publication Critical patent/US3827132A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
    • B28B23/043—Wire anchoring or tensioning means for the reinforcements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49838—Assembling or joining by stringing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49874—Prestressing rod, filament or strand
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53526—Running-length work
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53539—Means to assemble or disassemble including work conveyor
    • Y10T29/53543—Means to assemble or disassemble including work conveyor including transporting track
    • Y10T29/53548—Means to assemble or disassemble including work conveyor including transporting track and work carrying vehicle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/53696—Means to string

Definitions

  • ABSTRACT Means for laying a series of wires in parallel array within a series of aligned moulds in a bay wherein concrete is to be poured while the wires are retained in a strained condition comprising bolster means at each end of the bay, a series of reels at one end having the wires thereon, a series of blocks each containing apertures arranged in the pattern of the wires to be laid, abutment members for supporting blocks on each bolster, a trolley straddling the moulds and movable along the bay over the moulds, and collets on the wires arranged to frictionally engage respective wires when the collets are driven into respective apertures in a block.
  • This invention relates to means for and method of the laying of rods (wires) which are to be used in the prestressing of concrete articles.
  • one of the most time consuming portions of the entire operation is the laying out of the wires from which the reinforcing rods are formed, and typically there may be eighteen wires in each group and there may be five groups. It is not economical for the wires to be laid individually because of the time consumed, but on the other hand it is not regarded as being economically feasible to have say ninety reels of wire positioned at an end of a bay. Consequently, it has been the practice in the past to lay out a single group of wires at one time and in this example, eighteen reels are required and there are five operations of laying out the wires.
  • the main object of this invention is to provide improvements whereby the speed at which the groups of wires may be laid out can be increased, and the amount of labour can be reduced.
  • the means according to one form of the invention consists of means for the laying ofa series of wires in parallel array within a series of aligned moulds in a bay wherein concrete is to be poured while the wires are in a strained condition, comprising:
  • a. bolster means at each end of the bay of aligned moulds
  • the method (according to a form of the invention) of laying a series of wires in parallel array within a series of aligned moulds, wherein the means are as defined above, comprise the method of laying a series of wires in parallel array within a series of aligned moulds in a bay, wherein the means are according to claim 1, and comprising the steps:
  • FIG. 1 is a diagrammatic plan view of a bay containing a series of aligned moulds
  • FIG. 2 is a fragmentary perspective view which illustrates inter alia, aligned apertured blocks, a bolster and block support means at the reel end of the bay, and
  • FIG. 3 is a fragmentary elevation which illustrates inter alia, the trolley, bolster and abutment means at the other end of the bay, and
  • FIG. 4 is a section through an apertured block, showing wires secured thereto by collets.
  • a bay 10 for the pouring of concrete into'a series of aligned moulds is provided with a bolster 1 1 at each end.
  • a plurality of reels 12 each carrying a spool of wire which will eventually become reinforcing rods, the reels 12 being arranged so that the wires designated 14 can be drawn out in close proximity to one another, that is, in the pattern in which they are to be embedded in concrete ties.
  • a trestle 16 is positioned inwardly of the reels l2 and supports the wires 14 above the ground so that the wires do not become contaminated with dust.
  • a steel frame 18 (FIG. 2) is erected at the first end of the bay but inwardly from the reels 12, the steel frame having a pair of second transverse guide members 19 positioned one above the other, the guide members guiding a pattern plate 20 for transverse movement, the pattern plate 20 containing a plurality of apertures 21 which determine the pattern of the positioning of the reinforcing wires for any one row of a series of aligned moulds designated 23.
  • the pattern plate 20 can be moved from one location to another across the transverse guide means 19 as the successive rows of wires are to be laid out.
  • the pattern plate 20 has projecting forwardly therefrom a pair of spaced parallel angle members 24 which rest upon the bolster 11 at a point spaced inwardly from the frame 18, and the arrangement is such that as the pattern plate 20 is moved across so the angle members also move across from one side of the bay to the other.
  • the angle members constitute guide means, and support a plurality of blocks 26, there being the same number of pairs of blocks as there are rows of moulds 23.
  • the blocks 26 are load bearing members, and each is provided with a pattern of apertures 27 corresponding exactly to the apertures in the pattern plate 20, so that the wires from the reels may be passed through the pattern plate and simultaneously through all the blocks 26.
  • the angle guide members 24, however, have cut-out portions 29 in their horizontal flanges at the inner end, so that the innermost block 26 may be dropped through the cut-out portions to abut the bolster 11, the bolster 11 having a series of upstanding abutment arms 30 and a block support 31 extending across the bolster l1 and below the arms 30 to support the blocks 26.
  • the bolster 11 is anchored to a concrete slab in the ground.
  • the last of the blocks 26 through which the wires 14 pass is positioned onto a trolley 35 which is carried by wheels 36 which run on tracks 37 positioned one on each side of the bay l0, and the trolley 35 is coupled with a hauling winch 38 or a tractor so that it can be moved to the other end of the bay 10.
  • the tractor 39 is also arranged to return the trolley.
  • the wires 14 are fed from the reels 12 and through the pattern plate 20 and then through all the blocks 26 simultaneously, (the blocks 26 being retained in alignment on the angle guide members 24), the ries being secured to the last block through which they pass by means of tapered collets 41 (FIG. 4).
  • the last block 26 is then positioned onto the trolley 35 which is beyond the bolster l1, and the trolley is hauled outwardly by the hauling winch or tractor until that block is positionable against the tensioning bolster 43 at the other end of the bay l0, and is supported by a support 44 in like manner to the other end.
  • the block is positioned on the bolster as shown in FIG. 3 and the trolley is returned (above the rods which have been laid out in this manner).
  • the next last block 26 is then moved forwardly, the locking collets are secured to it and the block is dropped through the cut-out portions 29 in the angle guide members 24 to abut the bolster 11 at the reel end of the bay.
  • the wires are then cut, but at a point between the remaining blocks 26 and the bolster 11.
  • the pattern plate and guide means are then moved transversely in the transverse guide means of the steel frame, until aligned with the next pair of bolsters, and the operation is repeated.
  • the tensioning bolster 43 is moved by hydraulic cylinders 45 to which it is secured so as t0 stress the wires, and a wet mix of concrete is then poured into the moulds to thus form the ties.
  • Means for the laying of a series of wires in parallel array within a series of aligned moulds in a bay wherein concrete is to be poured while the wires are in a strained condition comprising:
  • a. bolster means at each end of the bay of aligned moulds
  • each bolster comprises a plurality of spaced upstanding arms, and each bolster further comprises a transversely extending block support beneath the arms.
  • Means according to claim 2 further comprising a pair of vertically spaced transversely extending guide members positioned between the reels and the bolster which is at the reel end of the bay, a pattern plate supported for transverse movement by the guide members and containing apertures arranged in said pattern and of diameter to allow respective said wires therethrough, and guide members arranged to support said blocks with corresponding block apertures aligned with one another and also aligned with the apertures of the pattem plate.
  • Means according to claim 1 further comprising hauling means for the hauling of said trolley along the bay.
  • Means according to claim 5 wherein said means for hauling the trolley comprises either winch means or a tractor.
  • the method of aligning a series of wires in parallel array in a series of aligned moulds in a bay which further comprises a pair of vertically spaced transversely extending guide members positioned between the reels and the bolster which is at the reel end of the bay, a pattern plate supported for transverse movement by the guide members and containing apertures arranged in said pattern and of diameter to allow respective said wires therethrough, and guide members arranged to support said blocks with corresponding block apertures aligned with one another and also aligned with the apertures of the pattern plate,

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
US00295921A 1971-11-11 1972-10-10 Prestressed rod laying means and method Expired - Lifetime US3827132A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPA696871 1971-11-11

Publications (1)

Publication Number Publication Date
US3827132A true US3827132A (en) 1974-08-06

Family

ID=3764850

Family Applications (1)

Application Number Title Priority Date Filing Date
US00295921A Expired - Lifetime US3827132A (en) 1971-11-11 1972-10-10 Prestressed rod laying means and method

Country Status (5)

Country Link
US (1) US3827132A (enrdf_load_stackoverflow)
JP (1) JPS5333966B2 (enrdf_load_stackoverflow)
GB (1) GB1357836A (enrdf_load_stackoverflow)
HK (1) HK39778A (enrdf_load_stackoverflow)
MY (1) MY8300198A (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4077440A (en) * 1975-11-03 1978-03-07 Nilcon Engineering Ab Reinforcement elements for elongate concrete building blocks manufactured by sliding form casting and a method and a machine to produce such elements
US4095326A (en) * 1975-05-06 1978-06-20 Societe Technique Pour L'utilisation De La Precontrainte Method and apparatus for inserting post-stressing tendons in concrete structures
US4149306A (en) * 1978-02-06 1979-04-17 Charles Pankow, Inc. Portable tensioning system for producing pre-stressed concrete beams
US4249873A (en) * 1977-03-28 1981-02-10 B. M. Costamagna et Cie Manufacture of prestressed products
US4884958A (en) * 1987-12-11 1989-12-05 Lowndes Corporation Apparatus for setting up and pouring concrete forms
US5439629A (en) * 1992-02-11 1995-08-08 Dyckerhoff & Widmann Aktiengesellschaft Method and apparatus for producing prefabricated components from pretensioned prestressed concrete
US20030047826A1 (en) * 2001-09-12 2003-03-13 Hamilton Form Co., Inc. Preparing strand cable for concrete mold
US20030098524A1 (en) * 2001-11-27 2003-05-29 Jordan A. Kenneth Strand feeder device
US6842960B2 (en) * 2001-11-27 2005-01-18 Hamilton Form Co., Inc. Method of feeding strand into a mold

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54116552U (enrdf_load_stackoverflow) * 1978-02-01 1979-08-15
JPS5916180Y2 (ja) * 1979-10-17 1984-05-12 オリエンタルコンクリ−ト株式会社 ブレストレスト緊張用治具
JPS61124793U (enrdf_load_stackoverflow) * 1985-01-24 1986-08-06
US5747074A (en) 1995-02-02 1998-05-05 Ollendick; David P. Apparatus for the manufacturing of prestressed reinforced concrete railroad ties and the like
DE102007004038B4 (de) * 2007-01-22 2016-10-27 Rail.One Gmbh Verfahren zur Herstellung von Weichenschwellen und nach diesem Verfahren hergestellte Weichenschwelle
DE102007008704B4 (de) * 2007-02-20 2014-04-17 Rail.One Gmbh Verfahren zur Herstellung einer Betonschwelle
ES2330072B1 (es) * 2008-06-02 2010-06-22 Pacadar, S.A. Banco para la fabricacion por moldeo de elementos de hormigon pretensados.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863206A (en) * 1952-08-27 1958-12-09 Kirchner Ignatz Adolf Apparatus for prestressing reinforcing wires for reinforced concrete parts in mass production
US3314131A (en) * 1964-04-29 1967-04-18 Ibm Wire threading method and apparatus
US3384939A (en) * 1964-02-11 1968-05-28 American Concrete Crosstie Co Closed path concrete forming and curing apparatus
US3437316A (en) * 1964-01-22 1969-04-08 Baltimore Concrete Plank Corp Cable looping means
US3676263A (en) * 1970-03-26 1972-07-11 Ridge Ply Inc Machine for making stress laminated panel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863206A (en) * 1952-08-27 1958-12-09 Kirchner Ignatz Adolf Apparatus for prestressing reinforcing wires for reinforced concrete parts in mass production
US3437316A (en) * 1964-01-22 1969-04-08 Baltimore Concrete Plank Corp Cable looping means
US3384939A (en) * 1964-02-11 1968-05-28 American Concrete Crosstie Co Closed path concrete forming and curing apparatus
US3314131A (en) * 1964-04-29 1967-04-18 Ibm Wire threading method and apparatus
US3676263A (en) * 1970-03-26 1972-07-11 Ridge Ply Inc Machine for making stress laminated panel

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4095326A (en) * 1975-05-06 1978-06-20 Societe Technique Pour L'utilisation De La Precontrainte Method and apparatus for inserting post-stressing tendons in concrete structures
US4077440A (en) * 1975-11-03 1978-03-07 Nilcon Engineering Ab Reinforcement elements for elongate concrete building blocks manufactured by sliding form casting and a method and a machine to produce such elements
US4249873A (en) * 1977-03-28 1981-02-10 B. M. Costamagna et Cie Manufacture of prestressed products
US4149306A (en) * 1978-02-06 1979-04-17 Charles Pankow, Inc. Portable tensioning system for producing pre-stressed concrete beams
US4884958A (en) * 1987-12-11 1989-12-05 Lowndes Corporation Apparatus for setting up and pouring concrete forms
US5439629A (en) * 1992-02-11 1995-08-08 Dyckerhoff & Widmann Aktiengesellschaft Method and apparatus for producing prefabricated components from pretensioned prestressed concrete
US20030047826A1 (en) * 2001-09-12 2003-03-13 Hamilton Form Co., Inc. Preparing strand cable for concrete mold
US6877688B2 (en) * 2001-09-12 2005-04-12 Hamilton Form Co., Inc. Preparing strand cable for concrete mold
US20030098524A1 (en) * 2001-11-27 2003-05-29 Jordan A. Kenneth Strand feeder device
US6842960B2 (en) * 2001-11-27 2005-01-18 Hamilton Form Co., Inc. Method of feeding strand into a mold
US6871839B2 (en) * 2001-11-27 2005-03-29 Hamilton Form Co., Inc. Strand feeder device

Also Published As

Publication number Publication date
JPS5333966B2 (enrdf_load_stackoverflow) 1978-09-18
GB1357836A (en) 1974-06-26
JPS4859124A (enrdf_load_stackoverflow) 1973-08-18
HK39778A (en) 1978-07-21
MY8300198A (en) 1983-12-31

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