EP4202146A1 - Kupplung, kupplungssystem und verfahren - Google Patents

Kupplung, kupplungssystem und verfahren Download PDF

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Publication number
EP4202146A1
EP4202146A1 EP21217628.3A EP21217628A EP4202146A1 EP 4202146 A1 EP4202146 A1 EP 4202146A1 EP 21217628 A EP21217628 A EP 21217628A EP 4202146 A1 EP4202146 A1 EP 4202146A1
Authority
EP
European Patent Office
Prior art keywords
load
transmission
sleeve
receptacle
coupler
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Withdrawn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
EP21217628.3A
Other languages
English (en)
French (fr)
Inventor
Wolfram Schwertner
Claudio Hasler
Fabian CADUFF
Bernhard Winkler
Thomas Foser
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.)
Hilti AG
Original Assignee
Hilti AG
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 Hilti AG filed Critical Hilti AG
Priority to EP21217628.3A priority Critical patent/EP4202146A1/de
Priority to PCT/EP2022/087617 priority patent/WO2023118509A1/en
Publication of EP4202146A1 publication Critical patent/EP4202146A1/de
Withdrawn legal-status Critical Current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

Definitions

  • Described herein is a method of coupling an elongated element having an end portion to a sleeve having a wall enclosing a receptacle, a coupling device and associated parts thereof.
  • the method may include material deformation in order to achieve coupling.
  • the reinforced concrete may be subjected to some applied loading which will place the coupled reinforcing bar into a state of axial stress. For example, under loading imposed by a large earthquake, a concrete element may become cracked and deformed. This may require the coupled reinforcing bar to stretch to a high level of plastic strain. The coupling device will then be required to have sufficient capacity to resist the full range of likely stresses and strains that may be imparted when in use.
  • a further design constraint is to avoid weakening the coupled elements about the coupling region.
  • the coupling device should have sufficient strength so as to force any region of failure away from the coupling region. This is of particular importance in certain applications, such as reinforced concrete elements used in earthquake prone regions where the reinforcing bar can be subjected to high levels of induced plastic stress and associated strain.
  • Another constraint with workpiece support relates to dimensional size. If reinforcing bars of different supplies are used, it may be an object to accommodate bars of different diameters within the same coupling device. It should also be appreciated that there are applications when the workpieces have different cross-sectional area, different shape, or different grades of material.
  • a coupler for coupling to an end portion of an elongated element comprising a sleeve having a wall enclosing a receptacle and defining a sleeve axis, wherein the wall comprises an inner face facing the receptacle and a plurality of alternating first and second load-transmission sections, wherein the wall has a plurality of radial openings each defining a first load-transmission section, the coupler further comprising a plurality of load-transmission elements each configured to be inserted in one of the plurality of radial openings, wherein each of the plurality of first load-transmission sections comprises a support element opposite to the radial opening and projecting from the inner face into the receptacle above the inner face in the second load-transmission sections.
  • the support elements' projecting above the inner face in the second load-transmission sections provides for a distance between the elongated element and the inner face.
  • a uninterrupted circumferential gap between the elongate element and the inner face is provided in the second load-transmission sections.
  • a grout filled in the receptacle may distribute around the elongate element more evenly, thus enhancing the coupling quality or force of the system.
  • each of the plurality of radial openings comprises a thread and each of the plurality of load-transmission elements comprises a screw.
  • each of the plurality of load-transmission elements has a tip configured to cut into the longitudinal element. In this way, a form-locking load transmission between the load-transmission elements and the elongate element is increased.
  • each of the support elements comprises at least one bulge, or convex bulge, of the wall.
  • a bulge may be easily produced, e.g. by embossing from an outer face of the wall, and does not need to be inserted through an opening of the sleeve.
  • the plurality of second load-transmission sections comprises a plurality of load-transmission projections, wherein the support elements project from the inner face into the receptacle above the load-transmission projections.
  • the load-transmission projections may provide an undercut in an axial direction of the sleeve, thus increasing a form-locking load transmission between the wall and a grout filled in the receptacle.
  • At least one of the elongated element, the sleeve and the plurality of load-transmission elements comprises a metallic material, or an alloy, or steel.
  • the elongated element comprises a reinforcement bar and the coupler comprises a reinforcement-bar coupler.
  • a coupling system comprises the coupler and a grout configured to be filled into the receptacle.
  • a coupling system comprises the coupler according to any of the preceding claims and two reinforcement bars each having an end portion, wherein the receptacle receives the end portions of the reinforcement bars from opposite axial directions.
  • a method of coupling an elongated element having an end portion to a sleeve having a wall enclosing a receptacle comprises providing the elongated element and the sleeve, wherein the sleeve or a package of the sleeve has a first data storage storing a set of sleeve parameters, the method further comprising reading the set of sleeve parameters from the first data storage, inserting the end portion of the elongated element into the receptacle of the sleeve, and fastening the sleeve to the elongated element according to the set of sleeve parameters.
  • fastening the sleeve to the elongated element according to the set of sleeve parameters ensures reduces the risk of erroneously incorrectly fastening the sleeve to the elongated element.
  • a fastening tool may automatically apply the correct parameters to the fastening process, thus further ensuring correct fastening.
  • the set of sleeve parameters includes at least one of a type of the sleeve, a size of the sleeve, a number and kind of load-transmission elements to be used, a load to be applied to a load-transmission element, and an amount and kind of a grout to be used.
  • fastening the sleeve to the elongated element comprises driving a load-transmission element through the wall of the sleeve on the elongated element.
  • the load-transmission element comprises at least one of a stud, a nail and a screw.
  • the load-transmission element may be driven by at least one of a nail gun, a stud gun, a hydraulic press and a screw driver.
  • fastening the sleeve to the elongated element comprises filling the receptacle with a grout.
  • the grout comprises at least one of a mortar, a resin and a glue.
  • the grout is provided in a container which has a second data storage storing a set of grout parameters, and the method further comprises reading the set of grout parameters from the second data storage.
  • the set of grout parameters includes at least one of a type, a production lot, a production date and a composition, of the grout.
  • the method further comprises determining a set of coupling parameters of the method performed and transmitting the set of coupling parameters to a database.
  • the set of coupling parameters includes at least one of a type of the sleeve, a size of the sleeve, a type of the load-transmission element, a size of the load-transmission, a load applied to the load-transmission element, a type of the grout, a composition of the grout, a production lot of the grout, a composition of the grout, an amount of the grout filled in the receptacle.
  • the method further comprises using the set of coupling parameters to verify correct coupling of the elongated element.
  • a coupling system comprises an elongated element, a sleeve, wherein the sleeve or a package of the sleeve has a first data storage storing a set of sleeve parameters, the coupling system further comprising a reader configured to read the set of sleeve parameters from the first data storage.
  • the coupling system further comprises a load-transmission element configured to be driven through the wall of the sleeve according to the set of sleeve parameters.
  • the coupling system further comprises a grout configured to be filled in the receptacle according to the set of sleeve parameters.
  • a coupler 100 provided to be coupled to an end portion of an elongated element such as a reinforcement bar is shown.
  • the coupler 100 comprises a sleeve 110 having a wall 120 that encloses a receptacle 130 and that defines a sleeve axis 140.
  • the wall 120 comprises an inner face 125 facing the receptacle 130 and comprises a plurality of alternating first load-transmission sections 150 and second load-transmission sections 160.
  • the wall 120 is provided with two radial openings 155 each defining a first load-transmission section 150.
  • Each of the plurality of first load-transmission sections 150 comprises a support element 156 opposite to the respective radial opening 155 and projecting from the inner face 125 into the receptacle 130 above the inner face 125 in the second load-transmission sections 160.
  • Each support element 156 is formed as a bulge embossed from an outer face126 of the wall 120.
  • Each of the second load-transmission sections 160 comprises one or more load-transmission projections 161. However, the support elements 156 project from the inner face 125 into the receptacle 130 above the load-transmission projections 161.
  • a coupling system 200 comprising a longitudinal element 210 such as a reinforcement bar and the coupler 100 of Figs. 1-2 is shown in a cross-sectional front-view sectioned at a level of a first load-transmission section ( Fig. 3 ) and at a level of a second load-transmission section ( Fig. 4 ), respectively.
  • the coupling system 200 further comprises a plurality of load-transmission elements 170 inserted in the plurality of radial openings. Each radial opening is provided with a thread and each load-transmission element 170 is formed as a screw having a counter-thread and is screwed into a respective radial opening by an electric screw driver 220.
  • Each load-transmission element 170 has a tip 175 that cuts into the longitudinal element 210 for a form-locking load transmission in an axial direction.
  • the elongated element 210, the sleeve 110 and the plurality of load-transmission elements 170 are made of steel.
  • the support elements 156 project above the load-transmission projections 161 projecting from the inner face 125 in the second load-transmission sections.
  • a distance between the elongated element 210 and the inner face 125 is thus provided in the second load-transmission sections. In this way, an uninterrupted circumferential gap 211 between the elongate element 210 and the inner face 125 is provided in the second load-transmission section.
  • the sleeve 110 has a first data storage 115 formed as a RFID tag, a one- or two-dimensional bar code, a color code or the like, and storing a set of sleeve parameters.
  • the set of sleeve parameters include a type of the sleeve 110, a size of the sleeve 110, a number and kind of load-transmission elements 170 to be used, a load such as a torque to be applied to a load-transmission element 170, and an amount and kind of a grout to be used in the receptacle 130, if applicable.
  • the electric screw driver 220 comprises a reader 225 configured to read the set of sleeve parameters from the first data storage 115.
  • the screw driver 220 automatically applies a load, e.g. a torque to the load-transmission element 170 according to the set of sleeve parameters read from the first data storage 115.
  • the reader 225 may further be configured to read a set of grout parameters such as a type, a production lot, a production date and a composition, of a grout that is intended to be filled in the receptacle 230.
  • the set of grout parameters may be read from a second data storage provided on a container of the grout.
  • the reader 225 may determine a set of coupling parameters of the coupling method performed, such as a type of the sleeve, a size of the sleeve, a type of the load-transmission element, a size of the load-transmission, a load applied to the load-transmission element, a type of the grout, a composition of the grout, a production lot of the grout, a composition of the grout, and an amount of the grout filled in the receptacle.
  • the reader 225 may then, e.g. during battery charging via a battery charging device, transmit the set of coupling parameters to an external database where some or all of the set of coupling parameters may be used to verify correct coupling of the elongated element 210.
  • a third data storage e.g. a one- or two-dimensional bar code, may be provided on a sealing element (not shown) that is visible only after filling the sleeve with a sufficient amount of grout.
  • Such a third data storage may contain data confirming filling the sleeve with the right amount of grout.
  • Such confirmation data may be contained in the set of coupling parameters.
  • the coupling system comprises a sleeve 310 having a wall 320, a load-transmission element 370 and a plurality of support elements 356.
  • the support elements 356 are formed as screws driven through the wall 320.
  • the coupling system 400 comprises a coupler having a sleeve 410 and coupled to an end portion of each of two reinforcement bars 510.
  • the sleeve 410 has a wall 420 that encloses a receptacle 430 filled with a grout such as an epoxy resin and that defines a sleeve axis 440.
  • the wall 420 comprises an inner face 425 facing the receptacle 430 and comprises a plurality of alternating first load-transmission sections 450 and second load-transmission sections 460.
  • the wall 420 is provided with two radial openings 455 each defining a first load-transmission section 450.
  • Each of the plurality of first load-transmission sections 450 comprises a support element 456 opposite to the respective radial opening 455 and projecting from the inner face 425 into the receptacle 430 above the inner face 425 in the second load-transmission sections 460.
  • Each of the second load-transmission sections 460 comprises one or more load-transmission projections 461 providing an undercut in an axial direction of the sleeve 410, thus creating a form-locking load transmission between the wall 420 and the grout in the receptacle 430.
  • a load applied to any of the longitudinal elements 510 is thus transmitted to the to the other of the longitudinal elements 510 via both the load-transmission elements 470 and the load-transmission projections 461.
  • the grout in the receptacle 430 is evenly distributed around the elongate element 510 within a gap between the elongate elements 510 and the inner face 425, particularly the load-transmission projections 461.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP21217628.3A 2021-12-23 2021-12-23 Kupplung, kupplungssystem und verfahren Withdrawn EP4202146A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21217628.3A EP4202146A1 (de) 2021-12-23 2021-12-23 Kupplung, kupplungssystem und verfahren
PCT/EP2022/087617 WO2023118509A1 (en) 2021-12-23 2022-12-22 Coupler, coupling system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21217628.3A EP4202146A1 (de) 2021-12-23 2021-12-23 Kupplung, kupplungssystem und verfahren

Publications (1)

Publication Number Publication Date
EP4202146A1 true EP4202146A1 (de) 2023-06-28

Family

ID=79021654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21217628.3A Withdrawn EP4202146A1 (de) 2021-12-23 2021-12-23 Kupplung, kupplungssystem und verfahren

Country Status (2)

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EP (1) EP4202146A1 (de)
WO (1) WO2023118509A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4666326A (en) * 1982-09-11 1987-05-19 Metal Bond (Technology) Limited Reinforcing bar coupling system
US5974761A (en) * 1995-11-10 1999-11-02 Mochizuki; Hitoshi Mortar grout splice sleeve for reinforcing bars
EP1424453A1 (de) * 2002-11-26 2004-06-02 Pfeifer Holding GmbH & Co. KG Verbindungsmuffe
CN112964861A (zh) * 2021-04-09 2021-06-15 上海市城市建设设计研究总院（集团）有限公司 便于施工后检测的智能灌浆套筒及其施工检测方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4666326A (en) * 1982-09-11 1987-05-19 Metal Bond (Technology) Limited Reinforcing bar coupling system
US5974761A (en) * 1995-11-10 1999-11-02 Mochizuki; Hitoshi Mortar grout splice sleeve for reinforcing bars
EP1424453A1 (de) * 2002-11-26 2004-06-02 Pfeifer Holding GmbH & Co. KG Verbindungsmuffe
CN112964861A (zh) * 2021-04-09 2021-06-15 上海市城市建设设计研究总院（集团）有限公司 便于施工后检测的智能灌浆套筒及其施工检测方法

Also Published As

Publication number Publication date
WO2023118509A1 (en) 2023-06-29

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