EP1222041A1 - Procede d'ecrasement d'un tube - Google Patents

Procede d'ecrasement d'un tube

Info

Publication number
EP1222041A1
EP1222041A1 EP00969073A EP00969073A EP1222041A1 EP 1222041 A1 EP1222041 A1 EP 1222041A1 EP 00969073 A EP00969073 A EP 00969073A EP 00969073 A EP00969073 A EP 00969073A EP 1222041 A1 EP1222041 A1 EP 1222041A1
Authority
EP
European Patent Office
Prior art keywords
tube
land
portions
opposed
crushed
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.)
Withdrawn
Application number
EP00969073A
Other languages
German (de)
English (en)
Other versions
EP1222041A4 (fr
Inventor
Kevin William Weeks
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.)
Weeks Peacock Quality Homes Pty Ltd
Original Assignee
Weeks Peacock Quality Homes 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 Weeks Peacock Quality Homes Pty Ltd filed Critical Weeks Peacock Quality Homes Pty Ltd
Publication of EP1222041A1 publication Critical patent/EP1222041A1/fr
Publication of EP1222041A4 publication Critical patent/EP1222041A4/fr
Withdrawn legal-status Critical Current

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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • B21D41/045—Closing

Definitions

  • This invention relates to a method of crushing a tube.
  • the invention has particular, but not exclusive, application in preparing the end of a tube for connection with another member via a conventional fixing element such as a bolt.
  • web is used to refer to a strut or bracing element which extends between the upper and lower chord of a roof truss.
  • the invention resides in a method of crushing a tube, the method including:- pressing together opposed portions of the tube such that the opposed portions abut to define a land which is adapted to receive a fixing element, wherein opposed lateral portions of the tube adjacent the land do not abut but rather define sub-tubes which straddle the land and which extend lengthwise of the tube.
  • the invention resides in a method of forming a flattened region in a tube, the method including pressing together opposed portions of the tube, whilst not pressing together lateral opposed portions of the tube.
  • the invention resides in a method of forming a flattened region in a tube, the method including selectively pinching opposed portions of the tube together such that the opposed portions of the tubes abut at a central location and such that lateral sub-tubes are defined which straddle the pinched portion.
  • the invention resides in a method of forming a land on a tube, the method including:- compressing opposed peripheral portions into abutment to define the land, such that lateral ribs extend along either side of the land, the ribs being formed by the portions of the tube adjacent the abutting portions which define the land.
  • the invention resides in a method of crushing a tube, the method including:- crushing the tube between a pair of opposed crush members, at least one of the crush members being substantially narrower than the corresponding dimension of the tube and engaging the tube in a substantially central location whereby a central crushed region is defined between a pair of lateral non- crushed regions, said crushed region being adapted to receive a fixing element.
  • the invention resides in a tube including a crushed region wherein opposed portions of the tube have been crushed together to abut and define a land which is adapted to receive a fixing element, the tube further including longitudinally extending non-crushed regions located laterally either side of the crushed region.
  • the invention resides in a tube including:- a land at an end of the tube formed by compressing opposed peripheral portions of the tube into abutment, and ribs extending along either side of the land and formed by the portions of the tubular member adjacent the abutting peripheral portions.
  • FIG 1 is a plan view of a tube having a crushed or flattened end
  • FIG 2 is a frontal elevation of the tube of FIG 1 ;
  • FIG 3 is a right side elevation of the tube of FIG 1 with a bolt head present
  • FIG 4 is a right side elevation of the tube of FIG 1 with the bolt head absent; and FIG 5 is a right side elevation of the tube of FIG 1 with the nut and bolt present and with the tube fastened to a planer surface.
  • Tube 10 may be, for example, a web which in use extends between the upper and lower chords of a roof truss.
  • Tube 10 is originally formed from a planer sheet of material which is folded about a longitudinal axis to define the tube with an overlapping longitudinal seam 12 as best shown in FIG 2.
  • the seam may be welded, riveted, glued or fixed by any known means.
  • the preferred embodiment utilises an integral stitching method which swages together material in the overlapping seam region.
  • the end of the tube is tapered in frontal elevation.
  • a substantially triangular region 14 is more aggressively tapered and is pressed together into an abutting relationship adjacent the end of the tube.
  • a central region 18 the opposed peripheral portions of the tube are crushed together so as to be abutting and planer.
  • open sections 20 are defined either side of the central crushed region 18.
  • Each of the open sections 20 defines a sub-tube or rib which extends longitudinally of the tube 10 either side of the central crushed region 18.
  • the central crushed region 18 is adapted to receive a fixing element by virtue of one or more punched holes 16. As shown in FIG 3, the punched hole 16 receives a fixing element in the form of a nut and bolt arrangement 22.
  • the central crushed region 18 provides a flattened land which is adapted to receive a conventional fixing element such as nut and bolt arrangement 22.
  • the lateral non-crushed regions 20 provide additional structural strength as compared to a tube in which the entire end of the tube is pinched into an abutting relationship.
  • a planer surface eg the upper or lower chord of a truss
  • the end of the tube is deformed in that ribs or sub-tubes 20 are deformed upwardly in a wing-like manner by virtue of the engagement of the underside of the tube with the planer surface of the chord.
  • upward wing-like deformation of the sub-tubes 20 occurs under load, ie. the bolt is under tension as it is tightened. This results in a secure joint between the tube and chord.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Abstract

La présente invention concerne un tube (10) comprenant une partie centrale écrasée (18) en vue de recevoir un élément de fixation (22) et des zone latérales non écrasées (20) disposées de part et d'autre de la région écrasée (18) procurant ainsi une solidité structurelle additionnelle au tube.
EP00969073A 1999-10-05 2000-10-05 Procede d'ecrasement d'un tube Withdrawn EP1222041A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPQ3258A AUPQ325899A0 (en) 1999-10-05 1999-10-05 Method of crushing a tube
AUPQ325899 1999-10-05
PCT/AU2000/001209 WO2001024955A1 (fr) 1999-10-05 2000-10-05 Procede d'ecrasement d'un tube

Publications (2)

Publication Number Publication Date
EP1222041A1 true EP1222041A1 (fr) 2002-07-17
EP1222041A4 EP1222041A4 (fr) 2004-03-31

Family

ID=3817418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00969073A Withdrawn EP1222041A4 (fr) 1999-10-05 2000-10-05 Procede d'ecrasement d'un tube

Country Status (5)

Country Link
EP (1) EP1222041A4 (fr)
JP (1) JP2003511236A (fr)
AU (1) AUPQ325899A0 (fr)
CA (1) CA2386364A1 (fr)
WO (1) WO2001024955A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133086C1 (de) * 2001-07-11 2003-01-09 Froh Carl Gmbh Gasführungsrohr aus Metall für Luftsäcke von Kraftwagen und Verfahren zu dessen Herstellung
DE10201002A1 (de) * 2002-01-11 2003-07-31 Ulrich Huperz Schweistechnik G Verschluß eines Gasleitsystems
CN110404990A (zh) * 2019-08-14 2019-11-05 山东广泰环保科技有限公司 一种压管设备、复合管拉拔设备及拉拔工艺

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594051A (en) * 1945-06-25 1947-10-31 Henry Fierz Improvements in or relating to method of constructing joints in trusses made of structural tubes, and metal tubes for such constructions
DE822899C (de) * 1949-08-06 1951-11-29 Dalmine Societa Per Azioni Stahlskelettbauweise
GB2036550A (en) * 1978-11-20 1980-07-02 Brandoli Luigi Longitudinal cross-member for a vehicle seat

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT362112B (de) * 1979-08-06 1981-04-27 Interwaco Ag Fachwerkskonstruktion
EP0402175B1 (fr) * 1989-06-09 1994-12-28 Brian Francis Mooney Méthode et dispositif pour le formage du bout d'un tube métallique aplati et pour la fermeture et l'étanchement
DE4122862C2 (de) * 1991-07-10 1996-08-29 Ges Innenhochdruckverfahren Verbindung von Hohlteilen sowie Verfahren zu ihrer Herstellung
AU684155B2 (en) * 1994-06-08 1997-12-04 Carlo Muneretto Structural steel alternative

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB594051A (en) * 1945-06-25 1947-10-31 Henry Fierz Improvements in or relating to method of constructing joints in trusses made of structural tubes, and metal tubes for such constructions
DE822899C (de) * 1949-08-06 1951-11-29 Dalmine Societa Per Azioni Stahlskelettbauweise
GB2036550A (en) * 1978-11-20 1980-07-02 Brandoli Luigi Longitudinal cross-member for a vehicle seat

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO0124955A1 *

Also Published As

Publication number Publication date
JP2003511236A (ja) 2003-03-25
AUPQ325899A0 (en) 1999-10-28
EP1222041A4 (fr) 2004-03-31
WO2001024955A1 (fr) 2001-04-12
CA2386364A1 (fr) 2001-04-12

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