EP3805485A1 - Ancre - Google Patents

Ancre Download PDF

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Publication number
EP3805485A1
EP3805485A1 EP19202141.8A EP19202141A EP3805485A1 EP 3805485 A1 EP3805485 A1 EP 3805485A1 EP 19202141 A EP19202141 A EP 19202141A EP 3805485 A1 EP3805485 A1 EP 3805485A1
Authority
EP
European Patent Office
Prior art keywords
anchoring
anchor
securing
actuating
release position
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.)
Pending
Application number
EP19202141.8A
Other languages
German (de)
English (en)
Inventor
Michael FITZTHUM
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.)
Doka GmbH
Original Assignee
Doka GmbH
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 Doka GmbH filed Critical Doka GmbH
Priority to EP19202141.8A priority Critical patent/EP3805485A1/fr
Priority to CN202022192422.7U priority patent/CN214404270U/zh
Priority to US17/066,369 priority patent/US11680406B2/en
Publication of EP3805485A1 publication Critical patent/EP3805485A1/fr
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G5/00—Component parts or accessories for scaffolds
    • E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
    • E04G5/046—Means for fastening, supporting, or bracing scaffolds on or against building constructions for fastening scaffoldings on walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4114—Elements with sockets
    • E04B1/415—Elements with sockets with captive and extendable anchoring parts, e.g. spring-loaded bolts, hanging rings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/04—Cores for anchor holes or the like around anchors embedded in the concrete
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/002—Workplatforms, railings; Arrangements for pouring concrete, attached to the form
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
    • E04G17/14—Bracing or strutting arrangements for formwalls; Devices for aligning forms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/14—Conveying or assembling building elements
    • E04G21/142—Means in or on the elements for connecting same to handling apparatus
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/32—Safety or protective measures for persons during the construction of buildings
    • E04G21/3204—Safety or protective measures for persons during the construction of buildings against falling down
    • E04G21/3247—Storey high safety barrier hung from the facade and sliding up from level to level as work progresses

Definitions

  • the invention further relates to an anchoring device and a component with such an anchor.
  • the invention relates to a method for at least partial recovery of an anchor from a component.
  • Such an anchor is for example from the WO2008 / 019408 A1 known.
  • the climbing formwork has climbing units that are held on already completed wall sections by means of climbing rails.
  • the climbing rails are carried by climbing shoes that are held on the wall with the help of anchors.
  • the anchors have conical sections adjacent to the wall surface, to which the climbing shoes can be screwed.
  • part of the anchor in particular the so-called locking anchor, is introduced into the structure as a foreign body which remains in the structure even after completion. Furthermore, the cost of materials is high.
  • the object of the invention is to alleviate or remedy at least individual disadvantages of the prior art.
  • the invention has a particular aim of making it possible to easily recover at least parts of the anchor for further uses.
  • the anchoring element is movable between an anchoring position for anchoring in the receiving opening and a release position for removal from the component, with a securing element which is movable between a first position and a second position and is designed to facilitate the movement of the anchoring element between the anchoring position and to block the release position in the first position and release in the second position.
  • the movement of the anchoring element is released so that the anchoring element can preferably be moved reversibly and without permanent deformation from the anchoring position to the release position (and vice versa).
  • the first position of the securing element the movement of the anchoring element is blocked, so that the anchoring element is reliably anchored in the undercut of the receiving opening.
  • the securing element preferably rests on the anchoring element in such a way that a movement of the anchoring element in the direction of the release position is prevented.
  • the removal of the anchoring element from the receiving opening is prepared by moving the securing element from the first position into the second position.
  • the anchoring element In the second position of the securing element, the anchoring element can be transferred from the anchoring position in which the anchoring element engages the undercut of the receiving opening in the component to the release position in which the anchoring element is completely moved out of the undercut of the receiving opening.
  • the securing element is preferably displaceable between the first and the second position, preferably in the axial direction, i.e. in the direction of the central longitudinal axis of the elongate anchor.
  • the anchoring element In the release position, the anchoring element can be removed from the receiving opening of the component, preferably together with the connecting element and the securing element.
  • the securing element is designed as a pull-out element for pulling the anchor out of the receiving opening, so that by applying a tensile force to the securing element, in particular via a tool, not only the release of the anchoring element is effected, but the anchor can also be pulled out of the receiving opening.
  • the anchoring element can passively be moved into the release position by contact with the (concrete) body of the component surrounding the anchor when the anchor is pulled out of the receiving opening via the securing element.
  • an actuating element is provided which is designed to transfer the anchoring element between the anchoring position and the release position.
  • a force is transmitted to the anchoring element in such a way that the anchoring element is moved, preferably inward, from the anchoring position to the release position.
  • the anchoring element is actively moved into the release position via the actuating element, the securing element being arranged in the second position.
  • the securing element and the actuating element are implemented by a securing and actuating element which causes the anchoring element to be unlocked and the anchoring element to be actively moved into the release position.
  • the securing element and the actuating element can be formed by different components.
  • a tool is preferably used which is releasably connected to the anchor only for the recovery of the anchoring element and possibly also the connecting element.
  • the anchor can be at least partially removed from the structure after use.
  • no unnecessary foreign bodies remain in the structure. In this way, the risk of corrosion that exists with conventional barrier anchors can be avoided. It is also advantageous that the anchor can be reused, whereby a cost saving can be achieved.
  • the anchoring element, the connecting element and the securing element, preferably also the actuating element, are preferably connected to one another so that they cannot be lost.
  • the anchor according to the invention can be used for various purposes in the construction of the structure.
  • the anchor holds a support arm, which can preferably be arranged in a horizontal position on a (concrete) ceiling.
  • a climbing profile which in particular carries a protective shield for shielding an outer edge of the ceiling when a building is being erected, is preferably attached to the support arm.
  • the anchor carries a platform with formwork, in particular with wall formwork, for pouring a (concrete) wall.
  • the anchor is arranged in a precast concrete part, a lifting element, for example a crane, being attached to the anchor for lifting the precast concrete part.
  • the anchoring element in particular at its rear end, in a preferred embodiment has an expanding part which in the anchoring position with respect to the outside of the connecting element at its rear end area in a radial direction Projecting outward direction and in the release position is arranged in the radial direction the same distance or further inward than the outside of the connecting element at its rear end region.
  • the expansion part in the anchoring position, produces a form-fitting connection between the anchoring element and the receiving opening of the component.
  • the expansion part By transferring the anchoring element, preferably by means of the actuating element or passively via the surrounding (concrete) body of the component, into the release position, the expansion part is moved so far displaced inside that the expansion part does not protrude beyond the outside of the connecting element on the anchoring element side.
  • the anchoring element In the release position, the anchoring element can be pulled out of the receiving opening in the axial direction, preferably together with the connecting element and the securing element, preferably also with the actuating element. Reuse of the anchoring element, in particular also the connecting element and the securing element, preferably also the actuating element, is thus made possible in a particularly simple manner.
  • the anchoring element has several, in particular three, spreading parts, which are preferably arranged at regular angular intervals in the circumferential direction.
  • the anchoring element has several, in particular three, spreading parts, which are preferably arranged at regular angular intervals in the circumferential direction.
  • exactly three identical expansion parts are provided, which are each distributed in the circumferential direction offset by 120 degrees to one another.
  • the terms “axial”, “radial” and “tangential” etc. refer to the central longitudinal axis of the armature. If the anchor is used in the construction of a structure, the location and direction information, such as “vertical”, “horizontal” etc., refer to a structure with horizontal ceilings and vertical walls. If the building geometry differs, the location and direction information must be transferred accordingly.
  • intermediate spaces are preferably formed between the expansion parts in the anchoring position, which spaces are at least partially, in particular completely, closed in the release position.
  • the gaps can be used to release the movement of the expansion parts from the outer anchoring to the inner release position, i.e. inwards.
  • the expansion parts preferably abut one another on the inside in the release position. In this version, the gaps are completely closed in the release position.
  • the release position For transferring the anchoring element from the anchoring the release position is the securing and / or the actuating element in a preferred embodiment, preferably in the interior of the anchoring and / or the connecting element, movably, in particular displaceable in the axial direction, arranged.
  • the movement of the actuating element, preferably in the axial direction can be converted into the displacement of the anchoring element, preferably radially inward, in order to release the engagement of the anchoring element in the undercut of the receiving opening and thus removing the anchoring element from the receiving opening to enable.
  • the anchoring element In order to release the anchoring element, it is particularly advantageous if the anchoring element can be pivoted between the anchoring position and the release position.
  • the securing element and / or the actuating element is axially displaceable so that the axial displacement of the securing element is converted into the release of the anchoring element or the axial displacement of the actuating element is converted into the pivoting of the anchoring element.
  • the connecting element has a pivot axis, in particular essentially perpendicular to the axial direction, for the pivotable arrangement of the anchoring element, wherein preferably several pivot axes, in particular essentially perpendicular to the axial direction, are provided for the pivotable arrangement of the expansion parts of the anchoring element.
  • a longitudinal section of the connecting element which can also extend over essentially the entire length of the connecting element, has a non-circular outer contour in cross section (viewed perpendicular to the longitudinal axis), in particular an angular outer contour, for example a hexagonal outer contour.
  • This embodiment has the advantage that torsional forces, ie forces that would cause the armature to rotate about its longitudinal axis, can be reliably diverted into the component.
  • Effective force transmission to the anchoring element on the one hand and stable and secure anchoring on the other hand can be achieved if the securing and actuating element has an actuating head for transferring the anchoring element from the anchoring position to the release position, the actuating head in the anchoring position on the inside on the expansion part of the anchoring element is applied.
  • the actuating head in the anchoring position, preferably blocks a movement, in particular pivoting, of the expansion part, preferably inward, from the inside. A malfunction of the anchor in the anchoring position can advantageously be reliably avoided in this way.
  • the actuating head By moving the actuating head away from the expansion part, in particular in the axial direction, the movement of the expansion part can be released in order to prepare for the removal of the anchoring element from the receiving opening of the component.
  • the actuating head is preferably widened in relation to a longitudinal section of the securing and actuating element that preferably adjoins the front.
  • the anchoring element in particular at the front end, has an actuating arm onto which the actuating head of the securing and actuating element can be pushed in order to move the anchoring element into the release position, in particular to pivot it.
  • the actuating arm preferably rests on the front longitudinal section of the securing and actuating element, which preferably has a smaller radial extent than the actuating head.
  • the actuating arm of the anchoring element preferably has a run-on surface on which a further run-on surface of the actuating head strikes when the securing and actuating element is actuated. As a result, the anchoring element is moved into the release position.
  • the impact of the actuating head on the contact surface of the actuating arm preferably causes the expansion part to pivot. Conversely, pushing in the securing and actuating element causes the armature to be arranged in the anchoring position. The process is therefore reversible.
  • the securing element has a holding opening, in particular with a thread, for attaching a tool, in particular a pulling tool.
  • the securing element is also designed as an actuating element, the tool can be brought into engagement, in particular in threaded engagement, with the holding opening of the securing and actuating element in order to actuate the securing and actuating element, in particular to move it in the axial direction, and thus the anchoring element to solve from the undercut of the receiving opening of the component.
  • the connecting element preferably has an internal thread for a fastening screw.
  • the connecting element preferably has a cylindrical section and / or a conical section, in particular at the front end. The cone shape is used so that the part can be removed from the concrete after use.
  • the fastening screw is connected to the connecting element, the fastening screw preferably securing the securing and actuating element against a transfer of the anchoring element from the anchoring position to the release position.
  • a securing means for example a spring, is provided which secures the securing and actuating element - regardless of the presence of the fastening screw - against a transfer of the anchoring element from the anchoring to the release position.
  • the actuating element is designed as a screw which is displaced in the axial direction by rotation.
  • a securing means can be omitted.
  • the anchoring element can be received in a sealing sleeve which preferably has at least one predetermined breaking point.
  • the predetermined breaking point can run spirally along the outer surface of the sealing sleeve and is used for easier removal after use.
  • the sealing sleeve is designed to be elastic and is captively connected to the anchoring element and / or to the connecting element.
  • a sealing sleeve is preferred, but not essential.
  • the receiving opening can be made with a flow cone, which is then removed.
  • the receiving opening can be produced with the aid of a placeholder, for example made of Styrofoam, which is then removed, for example chemically or thermally, before the anchor is inserted into the receiving opening.
  • the receiving opening can be formed by a bore.
  • the anchor can be used to lift the precast concrete element, for example between a vertical and a horizontal position.
  • the precast concrete part can also be loaded onto a truck.
  • FIG. 1 a first example of the use of an anchor 1 in the erection of a structure 2, here a multi-storey building, is shown.
  • a structure 2 here a multi-storey building
  • FIG. 1 a first example of the use of an anchor 1 in the erection of a structure 2, here a multi-storey building, is shown.
  • several, here four, ceilings 3 storeys on top of one another have already been concreted.
  • a plurality of horizontal support arms 4 are arranged on the lower ceilings 3, each of which has a climbing shoe 5 for a vertical climbing profile 6 at the front end.
  • a protective shield is attached to the climbing profile 6, with which the open sides of the floors 3 are secured during the construction process.
  • the climbing profile 6 can be set up with the help of a self-climbing device or a crane (not shown).
  • the anchors 1 With the anchors 1, the support arms 4 are temporarily attached to the ceilings.
  • the anchors 1 are arranged vertically in the ceilings.
  • a second example of the use of the anchor 1 in the erection of vertical walls 7 of successive storeys of the structure 2 is shown.
  • the anchor 1 is concreted in the horizontal state in a first (top) wall 7a in order to carry a platform 8 for a wall formwork 9 in the next concreting step.
  • a further anchor 1 carries the platform 8 on a second wall 7b (located under the uppermost wall 7a) from a previous concreting step, on which the wall formwork 9 is arranged for concreting the uppermost wall 7a.
  • another anchor 1 is arranged on a third wall 7c below the second wall 7b in order to enable the stage 8 to be braced.
  • a crane climbing system is shown. In the case of a self-climbing system (not shown), a climbing profile can be held by the lower anchor via a climbing shoe.
  • the anchor 1 is shown in different functional positions.
  • the anchor 1 is used for the reversibly detachable attachment of a support element, for example the support arm 4 (cf. Fig. 1 ) or the platform 8 for the wall formwork 9 (cf. Fig. 2 ) into a receiving opening 10 of a component, in particular the ceiling 3 (cf. Fig. 1 ) or wall 7 (cf. Fig. 2 ) arranged.
  • the anchor 1 is preferably concreted into the structural element, that is to say is introduced into the formwork space before concreting.
  • the receiving opening 10 has on the rear side, ie on the side facing away from the outside of the component, an undercut 11 in which an anchoring element 12 of the anchor 1 can be anchored in such a way that the anchor 1 is in the axial direction, ie in the direction of a central longitudinal axis 12a of the elongated anchor 1, is secured against removal from the component.
  • the anchoring element 12 is shown in each case in the anchoring position in which the anchoring element 12 engages positively in the undercut 11 of the receiving opening 10 of the component.
  • the anchor 1 On the front side (ie towards the outside of the component), the anchor 1 has a connecting element 13, which can be connected to the support element in a reversible and detachable manner.
  • the connecting element 13 has a cylindrical section at the rear and a section conically widened towards the front at the front.
  • the connecting element 13 has an internal thread 14 which can be connected to an external thread 15 of a fastening screw 16.
  • the fastening screw 16 is attached to the connecting element 13. In this position, the armature 1 can carry the support element.
  • the fastening screw 16 is unscrewed from the connecting element 13 (cf. Fig. 5 ).
  • the armature 1 also has a securing and actuating element 17, with which the anchoring element 12 of the in Figures 3 to 6 outer anchoring position shown in an in Figures 7 to 9 inner release position shown can be transferred in order to enable recovery of at least the anchoring element 12 and the connecting element 13.
  • the anchoring element 12, the connecting element 13 and the securing and actuating element 17 are preferably formed from metal.
  • the anchoring element 12 has at least one expansion part 18 at its rear end, in the area of the undercut 11 of the receiving opening 10.
  • the expansion part 18 protrudes outward beyond the outside of the connecting element 13 at its rear end region in the radial direction (perpendicular to the longitudinal axis 12) in order to produce a form fit between the anchoring element 12 and the receiving opening 10.
  • the expansion part 18, viewed in the radial direction is arranged to be the same distance or further inward than the outside of the connecting element 13 at its rear end region, in order to enable extraction in the axial direction.
  • the anchoring element 12 has several, here three, identical expansion parts 18, which are arranged at regular angular intervals in the circumferential direction (i.e. tangentially with respect to the cylindrical section of the connecting element 13). In the outer anchoring position, separate spaces are formed between the expansion parts 18, which in the release position are at least partially closed, in the embodiment shown, completely.
  • the securing and actuating element 17 is movably arranged in the interior of the anchoring element 13, in the embodiment shown displaceable in the axial direction.
  • the displacement of the securing and actuating element 17 causes the anchoring element 12 to pivot between the anchoring position and the release position.
  • the expansion parts 18 are mounted on the connecting element 13 via pivot axes 19.
  • the securing and actuating element 17 has an actuating head 20 at the rear end. In the outer anchoring position, the actuating head 20 rests on the inside against the expansion parts 18 of the anchoring element 12.
  • the securing and actuating element 17 has a holding opening 22 at the front end, to which a tool 23 can be attached in a reversibly releasable manner in order to remove the armature 1 from the component.
  • the holding opening 22 has a thread 24 into which the tool 23 can be screwed.
  • a sealing sleeve 25 shaped corresponding to the receiving opening 10 is also provided, which surrounds the anchor 1 in the receiving opening 10 of the component at least so far that the setting in concrete of the anchor 1 does not impair the functions of the anchor 1.
  • the sealing sleeve 25 can have predetermined breaking points 26 in order to facilitate a later removal of the sealing sleeve 25 from the component.
  • the armature 1 is arranged in the receiving opening 10 of the component.
  • the fastening screw 16 is connected to the connecting element 13 in such a way that the fastening screw 16 secures the securing and actuating element 17 against a transfer of the anchoring element 12 from the outer anchoring to the inner release position (cf. Fig. 4 ).
  • the fastening screw 16 is then unscrewed from the connecting element 13 (cf. Fig. 5 ).
  • the tool 23 is then attached to the securing and actuating element 17 of the armature 1 (cf. Fig. 6 ).
  • the tool 23 has a handle 27, with which the screwing in of the tool into the holding opening 22 of the securing and actuating element 17 and pulling out the armature is facilitated.
  • the anchoring element 12 of the anchor 1 can then be transferred from the outer anchoring position to the inner release position (cf. Fig. 7 ).
  • armature 1 in the area of the connecting element 13 is shown schematically, which in the embodiment shown has an angular, here hexagonal, outer contour in order to enable torsional forces to be derived, see double arrow 28.
  • the internal structure of the connecting element 13 is not shown.
EP19202141.8A 2019-10-09 2019-10-09 Ancre Pending EP3805485A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP19202141.8A EP3805485A1 (fr) 2019-10-09 2019-10-09 Ancre
CN202022192422.7U CN214404270U (zh) 2019-10-09 2020-09-29 锚栓、锚固装置和构件
US17/066,369 US11680406B2 (en) 2019-10-09 2020-10-08 Anchor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19202141.8A EP3805485A1 (fr) 2019-10-09 2019-10-09 Ancre

Publications (1)

Publication Number Publication Date
EP3805485A1 true EP3805485A1 (fr) 2021-04-14

Family

ID=68242423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19202141.8A Pending EP3805485A1 (fr) 2019-10-09 2019-10-09 Ancre

Country Status (3)

Country Link
US (1) US11680406B2 (fr)
EP (1) EP3805485A1 (fr)
CN (1) CN214404270U (fr)

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