WO2000061314A1 - Vis helicoidale pour dispositifs d'ancrage de pilier a vis - Google Patents

Vis helicoidale pour dispositifs d'ancrage de pilier a vis Download PDF

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Publication number
WO2000061314A1
WO2000061314A1 PCT/AU2000/000282 AU0000282W WO0061314A1 WO 2000061314 A1 WO2000061314 A1 WO 2000061314A1 AU 0000282 W AU0000282 W AU 0000282W WO 0061314 A1 WO0061314 A1 WO 0061314A1
Authority
WO
WIPO (PCT)
Prior art keywords
blank
central hole
helical
flyte
screw pile
Prior art date
Application number
PCT/AU2000/000282
Other languages
English (en)
Inventor
Paul Anthony Camilleri
Original Assignee
Steel Foundations Technology Pty. Ltd.
Steel Foundations 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
Priority claimed from AUPP9600A external-priority patent/AUPP960099A0/en
Priority claimed from AUPQ3168A external-priority patent/AUPQ316899A0/en
Application filed by Steel Foundations Technology Pty. Ltd., Steel Foundations Ltd. filed Critical Steel Foundations Technology Pty. Ltd.
Priority to AU35438/00A priority Critical patent/AU753957B2/en
Publication of WO2000061314A1 publication Critical patent/WO2000061314A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles

Definitions

  • THIS INVENTION relates to a helical flyte for screw pile anchors.
  • screw pile anchors shall also include “screw piers” and “ground anchors”.
  • AU-B-17734/95 discloses the manufacture of ground anchors, or screw piers, where the helical flyte is formed by deformation of the tubular shank.
  • AU-A-40280/95 (STEEL FOUNDATIONS LIMITED) discloses the manufacture of screw piers, where preformed helical flytes are welded to the tubular body of the piers using a welding machine.
  • the present invention provides a method of forming a helical flyte for a screw pile anchor, including the steps of: a) cutting the blank, with a central hole, from a metal sheet; b) cutting a plurality of substantially radial slits in the blank from the central hole; c) deforming a plurality of tabs, defined by adjacent pairs of the slits, out of the plane of the blank; and d) deforming the blank into a substantially helical configuration.
  • the method further includes step (e) wherein a radial slit is cut in the central hole to the periphery before step (d).
  • Step (d) may be effected before step (c) if preferred.
  • the present invention resides in a helical flyte for a screw pile anchor including: a metal body of helical configuration about a central hole; and a plurality of tabs defined by adjacent pairs of substantially radial slits from the central hole, tabs being deformed out of the plane of the adjacent portions of the body.
  • the present invention resides in a method of forming a helical flyte for a screw pile anchor including the steps of: a) cutting a blank, with a central hole, from a metal sheet; b) forming a plurality of substantially radial deformations out of the planes of the respective adjacent portions of the blank; and c) deforming the blank into a substantially helical configuration.
  • the method may include a further step (d) where a radial slit is cut from the central hole to the periphery of the blank before step (c).
  • the deformations are of reducing width and height (or radius) in the radially upward direction.
  • the deformations terminate a distance from the periphery of the flyte.
  • the present invention resides in a helical flyte for a screw pile anchor including: a metal body of substantially helical configuration about a central hole; and a plurality of substantially radial deformations formed out of the planes of adjacent portions of the body.
  • the present invention resides in a method of forming a helical flyte for a screw pile anchor including the steps of: a) cutting a first blank, with a central hole, from a metal sheet; b) deforming the first blank into a substantially helical configuration; and c) cutting a second blank, of reduced diameter, with a central hole, from a metal sheet; d) deforming the second blank into a substantially helical configuration; e) locating the second blank above the first blank with the respective central holes co-axial; and f) welding, brazing or otherwise fastening the periphery of the second blank to the upper surface of the first blank.
  • the second blank on a radial line, is inclined at an angle of 10°-30° relative to the first blank.
  • the method includes a further step (a1 ) where a radial slit is cut from the central hole to the periphery of the first blank, before step (b); and a further step (d ), where a radial slit is cut from the central hole to the periphery of the second blank, before step (d).
  • the present invention resides in a helical flyte manufactured by the method of the fifth aspect.
  • the helical flyte may be substantially circular, square, hexagonal, octagonal or other shape in plan view; and is preferably fixed to the shaft or tubular shank of the screw pile anchor by welding of the tabs or deformations and/or the internal periphery of the central hole to the shaft or body.
  • FIG. 1 is a plan view of the helical flyte in accordance with the first embodiment
  • FIG. 2 is a side elevational view thereof
  • FIG. 3 is a perspective view thereof
  • FIG. 4 is a sectional view taken on line A-A in FIG. 1
  • FIG. 5 is a perspective view of the helical flyte in accordance with the second embodiment
  • FIG. 6 is a side elevational view thereof;
  • FIG. 7 is a perspective view showing the helical flyte attached to a tubular shaft of the screw pile anchor;
  • FIG. 8 is a perspective view of the helical flyte in accordance with the third embodiment.
  • FIG. 9 is a top plan view thereof;
  • FIG. 10 is a sectional view taken on line A-A on FIG. 8;
  • FIG. 11 is one side elevational view thereof;
  • FIG. 12 is a second side elevational view thereof.
  • the helical flyte 10 is substantially octagonal in plan view (with rounded corners) and is formed from a sheet metal blank 11 cut from a piece of metal sheet.
  • a central hole 12 is provided in the blank and a plurality of substantially radially extending slits 13 extend therefrom, terminating a distance from the periphery 14 of the flyte.
  • Respective tabs 15, defined by adjacent pairs of slits 13, are bent out of the planes of the respective adjacent portions of the body 11 , and as shown in FIGS. 2 to 4, are preferably deformed alternately upwardly and downwardly relative to the body 11.
  • a radial slit is cut from the central hole 12 to the periphery 14, and this defines the leading edge 16 and trailing edge 17 of the flyte 10 when it is deformed into the helical configuration.
  • the helical flyte 10 is attached to the tubular shaft (not shown) of the screw pile anchor (also not shown) by welding the inner edges 18 of the tabs 15 to the tubular shaft.
  • the alternative inclination of the tabs 15 provides bracing to the flyte 10 to ensure that it can sustain high vertical loads along the tubular shaft.
  • a plurality of substantially part-conical formations 25 extend substantially radially from the central hole 22 in the body 21 of the helical flyte.
  • Each formation 25 is of reducing width and height (or radius) in the radially-outward direction, and the helical flyte 20 is secured to the tubular shaft 30 (see FIG. 7) by welding the shaft 30 to the faces 28 of the formations 25 and the central hole 22.
  • the formations 25 provide rigidity and stiffness to the helical flyte 20.
  • the helical flyte 120 of the third embodiment is formed from a first blank 121 , of substantially octagonal shape, with a central hole 122, and radial slit 123, formed into a substantially helical formation.
  • a second blank 124 of substantially circular shape has a central hole 125 and a radial slit 126 and is also formed into a substantially helical shape.
  • the second blank 124 is placed on the first blank 121 , with the central holes 122, 125 co-axial.
  • the periphery 127 of the second blank is welded, brazed or otherwise fastened to the upper face of the first blank 121.
  • the inclined angle ⁇ between the first and second blanks 121 , 124 is preferably in the range of 5°-45°, more preferably 10°-30°, the second blank "bracing" the helical flyte against loads applied along the shaft of the screw pile anchor.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

Cette invention concerne une vis hélicoïdale (10) destinée à des dispositifs d'ancrage de piliers à vis, fabriquée à partir d'une ébauche de métal plate (11), comportant un orifice central (12). Des paires de fentes adjacentes (13) disposées de manière radiale définissent des volets respectifs (15) qui sont pliés hors du plan des parties adjacentes respectives du corps (11), les extrémités intérieures (18) des volets (15) étant soudées à l'arbre tubulaire du dispositif d'ancrage de piliers à vis.
PCT/AU2000/000282 1999-04-07 2000-04-04 Vis helicoidale pour dispositifs d'ancrage de pilier a vis WO2000061314A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU35438/00A AU753957B2 (en) 1999-04-07 2000-04-04 A helical flyte for screw pile anchors

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AUPP9600 1999-04-07
AUPP9600A AUPP960099A0 (en) 1999-04-07 1999-04-07 Improvements in screw pile anchors
AUPQ3168A AUPQ316899A0 (en) 1999-09-28 1999-09-28 Improvements in screw pile anchors
AUPQ3168 1999-09-28

Publications (1)

Publication Number Publication Date
WO2000061314A1 true WO2000061314A1 (fr) 2000-10-19

Family

ID=25646020

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2000/000282 WO2000061314A1 (fr) 1999-04-07 2000-04-04 Vis helicoidale pour dispositifs d'ancrage de pilier a vis

Country Status (1)

Country Link
WO (1) WO2000061314A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1358954A1 (fr) * 2002-04-29 2003-11-05 United Technologies Corporation Noyau formé pour des passages de refroidissement formés par coulage et définition d'article amélioré
US11949370B2 (en) 2020-09-14 2024-04-02 Nextracker Llc Support frames for solar trackers

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU996655A1 (ru) * 1981-01-06 1983-02-15 За витель Воздухоопорное сооружение
RU1787886C (ru) * 1990-11-26 1993-01-15 Научно-производственное объединение по механизации и автоматизации производства машин для хлопководства "Технолог" Рабочий орган винтового конвейера
EP0578628A1 (fr) * 1992-07-07 1994-01-12 Deutsche Voest-Alpine Industrieanlagenbau Gmbh Dispositif pour convoyer en doses des matières en vrac

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU996655A1 (ru) * 1981-01-06 1983-02-15 За витель Воздухоопорное сооружение
RU1787886C (ru) * 1990-11-26 1993-01-15 Научно-производственное объединение по механизации и автоматизации производства машин для хлопководства "Технолог" Рабочий орган винтового конвейера
EP0578628A1 (fr) * 1992-07-07 1994-01-12 Deutsche Voest-Alpine Industrieanlagenbau Gmbh Dispositif pour convoyer en doses des matières en vrac

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Derwent World Patents Index; Class Q35, AN 1994-042154/05 *
DATABASE WPI Derwent World Patents Index; Class Q42, AN 1983-849385/51 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1358954A1 (fr) * 2002-04-29 2003-11-05 United Technologies Corporation Noyau formé pour des passages de refroidissement formés par coulage et définition d'article amélioré
US11949370B2 (en) 2020-09-14 2024-04-02 Nextracker Llc Support frames for solar trackers

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