EP1389658B1 - Joint à filet de vis pour barres de transmission de force - Google Patents

Joint à filet de vis pour barres de transmission de force Download PDF

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Publication number
EP1389658B1
EP1389658B1 EP02018042A EP02018042A EP1389658B1 EP 1389658 B1 EP1389658 B1 EP 1389658B1 EP 02018042 A EP02018042 A EP 02018042A EP 02018042 A EP02018042 A EP 02018042A EP 1389658 B1 EP1389658 B1 EP 1389658B1
Authority
EP
European Patent Office
Prior art keywords
thread
coupling sleeve
bar
conical
diameter
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
EP02018042A
Other languages
German (de)
English (en)
Other versions
EP1389658A1 (fr
Inventor
Klaus Fröhlich
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.)
Leviat GmbH
Original Assignee
Halfen GmbH and Co KG
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 Halfen GmbH and Co KG filed Critical Halfen GmbH and Co KG
Priority to AT02018042T priority Critical patent/ATE347640T1/de
Priority to DE50208898T priority patent/DE50208898D1/de
Priority to EP02018042A priority patent/EP1389658B1/fr
Publication of EP1389658A1 publication Critical patent/EP1389658A1/fr
Priority to HK04106166A priority patent/HK1063493A1/xx
Application granted granted Critical
Publication of EP1389658B1 publication Critical patent/EP1389658B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
    • E04C5/165—Coaxial connection by means of sleeves
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/162—Connectors or means for connecting parts for reinforcements
    • E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction

Definitions

  • the invention relates to a screw connection for force-transmitting rods, in particular reinforcing rods for reinforced concrete parts of the type specified in the preamble of claim 1.
  • EP 0 059 680 B1 describes an anchor connection, by means of which anchors arranged in two different concrete sections are connected.
  • a receiving head is designed on one of the anchors at one end by forging the anchor material, in which a bore is arranged with internal thread.
  • a thread preferably made by thread rolling is provided, wherein the diameter at the bottom of the screw groove corresponds at least to the original diameter of the armature. For this purpose, it is necessary to increase this end of the anchor previously in diameter, which also takes place in a suitable manner by forging.
  • EP 0 077 952 A1 discloses a method for producing a bar end for the connection of reinforcing bars in reinforced concrete construction.
  • a shelled with conical expansion in the region of the expiring thread bar end is provided, on which a thread is rolled up with a thread rolling tool.
  • the conical expansion must be determined accordingly.
  • a slip screwed connection for rods in construction is known.
  • two components are to be connected, one of which is a rod-shaped element and the other a sleeve-shaped element into which the rod is screwed.
  • One of the elements has a thread shape on its contour facing the other element.
  • a partial thread or a flat bevel can be provided on the sleeve at the front end of the rod.
  • a threaded coupling for force-transmitting rods in particular reinforcing rods for reinforced concrete parts, is described.
  • a sleeve is provided which has a portion with an internal thread and which is connected to its other portion by radial compression with one end of a reinforcing bar.
  • the end of the other reinforcing bar has a head with an external thread, the head as a first separate part, which is then attached by butt welding to the reinforcing bar or can be designed as an upset by compression end.
  • the present invention is based on US-A-5,131,204 and its object is a screw connection for force-transmitting rods, in particular Reinforcing bars to create, which is easier and cheaper to produce.
  • the thread can be rolled up directly at the end of the second rod, without any previous processing of the rod end is required.
  • the conical course of the internal thread within the coupling sleeve, at least over a partial length, leads to a reduction of the thread diameter, which has the advantage that the sleeve has a smaller overall volume and thus a smaller volume at the end of the first rod must be transformed.
  • the processing steps for producing the screw connection are simplified, without weakening the screw connection with respect to the power transmission.
  • the external thread on the connection head has a smaller outer diameter than the diameter of the second rod, at least over a partial length. It is expedient that the external thread on its extending to the second rod transition region has the same cone shape, as the conical threaded portion at the outer end of the sleeve.
  • the outer diameter of the thread is constant over a partial length.
  • a design of the thread has proven, in which the partial length of the conical section is 0.15 to 0.3 times the total length of the thread.
  • a force transmission which meets the required tensile stresses is ensured even if the outer diameter of the outer thread is smaller than the diameter of the second rod itself.
  • Fig. 1 the end of a first rod 2 is shown, which is expanded by forging in diameter and designed as a coupling sleeve 4.
  • This coupling sleeve 4 comprises a bore 5 with an internal thread 6, wherein to the open end of the bore 5 through a conical threaded portion 7 is provided.
  • the front end of the coupling sleeve 4 is designed as a flange 8, in which are bores 9, which serve for example for the passage of fastening means on a formwork.
  • the internal thread 6 has an overall length 1, wherein the internal thread 6 over a partial length l 1 has a constant diameter, whereas the conical threaded portion 7 extends over the much shorter part length l 2 .
  • Fig. 2 shows the view according to arrow II in Fig. 1, i. the front view of the flange 8 with the centrally disposed bore 5 and internal thread 6 and conical threaded portion 7 and four evenly distributed over the circumference arranged holes 9th
  • Fig. 3 shows a section through the coupling sleeve 2 according to FIG. 1 and in addition a running on a second rod 3 connecting head 10 with external thread 11.
  • This external thread 11 has a transition region 12 to the second rod 3 out.
  • the external thread 11 has a partial length l 1 with an outer diameter D G , which is smaller than the diameter D of the second rod 3.
  • the outer diameter D G of the external thread 11 is 0.9 times the diameter D of the second rod 3.
  • the partial length l 2 is 0.15 to 0.3 times the total length 1 of the thread.
  • connection head 10 shows a screw connection 1 produced by screwing in the connection head 10 into the coupling sleeve 4 for the force-transmitting first and second rods 2, 3. Since the conical threaded portion 7 in the coupling sleeve 4 has the same contour as the conical thread in the transitional region 12 achieved a very favorable power transmission.
  • Fig. 5 shows an alternative embodiment of the coupling sleeve 4 on the first rod 2, said coupling sleeve 4 is provided at the front end with a smaller flange 13 than in the embodiment described above.
  • Fig. 6 shows a view in the direction of arrow VI in Fig. 5. Due to the smaller flange 13 of the coupling sleeve 4, the required material deformation is lower.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Reinforcement Elements For Buildings (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Claims (5)

  1. Assemblage vissé (1) pour des barres transmettant des forces, en particulier des barres d'armature pour des éléments en béton armé, se composant d'un manchon d'accouplement (4), à filet intérieur (6), formé sur une extrémité d'une première barre (2), et d'une tête de raccordement (10), à filet extérieur (11), prévue au niveau d'une extrémité d'une deuxième barre (3), où le filet intérieur (6) du manchon d'accouplement (4) présente, au moins sur une longueur partielle (12) du filetage, une partie de filetage conique (7), caractérisé en ce que le filet extérieur (11), au niveau de la tête de raccordement (10), au moins sur une longueur partielle (l1), présente un diamètre extérieur (DG) plus petit par rapport au diamètre (D) de la deuxième barre (3), et la longueur partielle (12) de la partie conique (7) est égale de 0,15 fois à 0,3 fois la longueur totale (1) du filetage (6, 11).
  2. Assemblage vissé selon la revendication 1, caractérisé en ce que la forme conique du filet extérieur (11), sur la deuxième barre (3), est adaptée au filet intérieur conique.
  3. Assemblage vissé selon la revendication 1, caractérisé en ce que le filet extérieur (11), au niveau de sa zone de transition (12) s'étendant vers la deuxième barre (3), a la même forme de cône que la partie de filetage conique (7) du manchon d'accouplement (4).
  4. Assemblage vissé selon la revendication 1, caractérisé en ce que, sur la longueur partielle (l1), le diamètre extérieur (DG) du filet extérieur (11) est constant.
  5. Assemblage vissé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le diamètre extérieur (DG) du filet extérieur (11) est à peu près égal à 0,9 fois le diamètre (D) de la deuxième barre (3).
EP02018042A 2002-08-13 2002-08-13 Joint à filet de vis pour barres de transmission de force Expired - Lifetime EP1389658B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT02018042T ATE347640T1 (de) 2002-08-13 2002-08-13 Schraubverbindung für kraftübertragende stäbe
DE50208898T DE50208898D1 (de) 2002-08-13 2002-08-13 Schraubverbindung für kraftübertragende Stäbe
EP02018042A EP1389658B1 (fr) 2002-08-13 2002-08-13 Joint à filet de vis pour barres de transmission de force
HK04106166A HK1063493A1 (en) 2002-08-13 2004-08-17 Screw threaded joint for load transmitting bars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02018042A EP1389658B1 (fr) 2002-08-13 2002-08-13 Joint à filet de vis pour barres de transmission de force

Publications (2)

Publication Number Publication Date
EP1389658A1 EP1389658A1 (fr) 2004-02-18
EP1389658B1 true EP1389658B1 (fr) 2006-12-06

Family

ID=30470250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02018042A Expired - Lifetime EP1389658B1 (fr) 2002-08-13 2002-08-13 Joint à filet de vis pour barres de transmission de force

Country Status (4)

Country Link
EP (1) EP1389658B1 (fr)
AT (1) ATE347640T1 (fr)
DE (1) DE50208898D1 (fr)
HK (1) HK1063493A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103469967B (zh) * 2013-08-20 2016-03-16 张晨 钢筋砼构件装配式建筑构件钢筋连接套筒

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4619096A (en) 1981-01-15 1986-10-28 Richmond Screw Anchor Co., Inc. Rebar splicing and anchoring
DE3141928C2 (de) 1981-10-22 1984-12-20 Wayss & Freytag Ag, 6000 Frankfurt Bewehrungsstab für Stahlbeton
EP0379141A1 (fr) * 1989-01-17 1990-07-25 Heribert Hiendl Connexion d'armature de béton
DE4140407C2 (de) * 1991-12-07 1994-11-10 Hiendl Heribert Verfahren zum Herstellen einer Verbindung zwischen wenigstens zwei Längen eines Betonstahls
DE4418744A1 (de) * 1994-05-28 1995-11-30 Wayss & Freytag Ag Schraubverbindung für einen Rundstab
DE19626649A1 (de) 1996-07-03 1998-01-08 Deha Ankersysteme Schraubkupplung für kraftübertragende Stäbe
DE19753755C2 (de) 1997-12-04 2001-07-05 Deha Ankersysteme Schlupfarme Schraubverbindung für Stäbe im Bauwesen mit geometrisch definierter Konterung

Also Published As

Publication number Publication date
HK1063493A1 (en) 2004-12-31
DE50208898D1 (de) 2007-01-18
ATE347640T1 (de) 2006-12-15
EP1389658A1 (fr) 2004-02-18

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