EP4226004A1 - Ankergreifer zum entfernen eines schalungsankers, schalungsanker zum anordnen an schalungelementen einer betonwandschalung, verfahren zum entfernen eines schalungsankers - Google Patents
Ankergreifer zum entfernen eines schalungsankers, schalungsanker zum anordnen an schalungelementen einer betonwandschalung, verfahren zum entfernen eines schalungsankersInfo
- Publication number
- EP4226004A1 EP4226004A1 EP21787348.8A EP21787348A EP4226004A1 EP 4226004 A1 EP4226004 A1 EP 4226004A1 EP 21787348 A EP21787348 A EP 21787348A EP 4226004 A1 EP4226004 A1 EP 4226004A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- anchor
- formwork
- gripper
- rod
- concrete
- 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.)
- Granted
Links
- 238000009415 formwork Methods 0.000 title claims abstract description 176
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 10
- 239000000314 lubricant Substances 0.000 claims description 9
- 239000012188 paraffin wax Substances 0.000 claims description 5
- VBICKXHEKHSIBG-UHFFFAOYSA-N 1-monostearoylglycerol Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 4
- DCXXMTOCNZCJGO-UHFFFAOYSA-N Glycerol trioctadecanoate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCC DCXXMTOCNZCJGO-UHFFFAOYSA-N 0.000 claims description 4
- 238000010276 construction Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 239000001993 wax Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/0642—Devices for extracting or inserting wall ties or parts thereof
-
- 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
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0651—One-piece elements
- E04G17/0652—One-piece elements fully recoverable
-
- 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
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/065—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning
- E04G17/0655—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts
- E04G17/0657—Tying means, the tensional elements of which are threaded to enable their fastening or tensioning the element consisting of several parts fully recoverable
Definitions
- Formwork ties for arranging on formwork elements of a concrete wall formwork, method for removing a formwork tie.
- the invention relates to an anchor gripper for removing a formwork anchor arranged between formwork elements of a concrete wall formwork according to the preamble of claim 1 .
- the invention further relates to a formwork anchor for arranging on formwork elements of a concrete wall formwork with an anchor rod and with an anchor gripper according to the preamble of claim 8 and a method for removing a formwork anchor arranged between formwork elements on the concrete wall formwork according to claim 11.
- Such formwork anchors are used in formwork technology for concreting concrete structures.
- the concrete wall formwork used in the construction sector is made up of formwork elements with a formlining.
- the formwork elements are supported and aligned, for example, by props.
- formwork anchors in such a double-skinned formwork.
- the formwork anchors have an anchor rod which is guided through through-holes in the formwork elements and which is fastened to the formwork elements by means of anchor rod attachments, for example anchor nuts.
- the formwork tie is therefore a connecting element that connects two formwork elements to one another.
- the concrete When pouring the concrete between the formwork elements, the concrete does not yet have the strength of the later component, but exerts pressure on the formwork.
- the formwork elements When forming a wall, the formwork elements, which are usually vertical, are connected to one another.
- the tie rod of the formwork tie is essentially located inside the concrete component.
- the formwork tie consists of several parts.
- the actual load transfer function is performed by a steel threaded rod, the tie rod. On each side it protrudes through a hole in the formwork, where it is secured on the outside, for example with a lock nut.
- the anchor rod In the event that the anchor rod is to be removed again after the formwork has been stripped, in the prior art it is accommodated in an empty tube which remains in the concrete component.
- a metal or plastic cone connects the empty pipe to the formwork on the sides so that the liquid concrete cannot leak out of the hole in the formwork.
- the formwork tie After removal, the formwork tie usually leaves a hole in the finished component, which can be closed with a spigot or plug or plastered over.
- the formwork elements are removed, whereby the formwork anchors must first be loosened and removed.
- the tie rod according to the prior art is guided in a sleeve or an empty pipe, the sleeve coming to rest on the inside of the formwork with the connecting cones inserted at its ends.
- a fastening device for the anchor rod of the formwork anchor has a Threaded sleeve with a screw-in channel that provides an internal thread for screwing in the anchor rod.
- An anchor plate is provided for resting the anchor rod attachment device on the formwork element.
- a threaded nut is provided which is coupled to the anchor plate at least in an axial direction and forms a thread pairing with the threaded sleeve.
- a conical anchor rod without spacer tubes and/or connection cones is installed in a concrete wall formwork under the designation MX anchor.
- articulated nuts are first positioned on a setting formwork and an eyebolt is tightened.
- the wall thickness of the concrete wall is set using spring pins on the anchor and countered with nuts.
- the anchor should be screwed through the closing formwork into the opposite joint nut and the ring bolt should be tightened.
- a disadvantage of this prior art is the costly manufacture of the tie rod with a conical end which has an external thread in order to be screwed into the joint nut.
- the object of the invention is to provide a tool for easy dismantling of the formwork anchor and a formwork anchor which, after the concrete has hardened, avoids the disadvantages of the prior art and is easier to handle.
- the object of the invention is to specify a simplified method for removing a formwork anchor arranged between formwork elements of a concrete wall formwork.
- an anchor gripper for removing a formwork tie arranged between formwork elements of a concrete wall formwork according to claim 1 and with a formwork tie for arranging on formwork elements of a concrete wall formwork with an anchor rod and with an anchor gripper according to claim 8.
- the object is also achieved by a method for removing a formwork anchor arranged between formwork elements of a concrete wall formwork according to claim 11.
- an anchor gripper for removing a formwork anchor arranged between formwork elements of a concrete wall formwork, the anchor gripper being designed to release an anchor rod of the formwork anchor from the concrete and to remove the anchor rod from the concrete wall formwork, can be screwed onto the formwork anchor and can be connected to the formwork anchor in a rotationally fixed manner.
- the anchor gripper can be designed as a sleeve with an internal thread, which becomes an external thread corresponds to the anchor gripper and can be screwed onto a free end of the anchor rod.
- the anchor rod is generally braced at its ends that protrude outwards from the formwork elements or formwork walls by means of anchor fastening means.
- the tie rod is guided in a sleeve or an empty pipe, the sleeve coming to rest on the inside of the formwork with the connecting cones inserted at its ends.
- the anchor gripper according to the invention on the other hand, neither such sleeves or empty pipes nor connection cones are necessary.
- the anchor rod is removed.
- the anchor fasteners are removed.
- the anchor gripper designed as a tool is used, which is screwed onto an external thread of an outwardly protruding end of the anchor rod and fixed there, so that there is a non-positive connection between the anchor gripper and the anchor rod.
- a screwing tool can now be placed on the anchor gripper so that the anchor rod is then detached from the hardened concrete and removed from the concrete wall formwork by transferring a rotary movement from the screwing tool to the anchor rod.
- the anchor gripper placed and fixed on the anchor rod can be rotated in a first direction of rotation to release the anchor rod from the concrete, for example further into the concrete wall formwork.
- the direction of rotation can be changed so that the tie rod can be twisted out of the concrete and thus out of the concrete wall formwork using the anchor grab.
- the anchor rod is in-or only from one side of the concrete wall formwork unscrewed. This one-sided operability leads to significantly lower personnel requirements and thus to time and cost savings.
- the tie nut lying in the course of the thread loosens on the side of the concrete wall formwork opposite the tie gripper. It is not necessary to loosen this anchor nut beforehand, as is the case in the prior art. In this way, the dismantling time is reduced.
- the anchor rod Since the anchor rod is surrounded by concrete, a kind of counter-thread to the thread of the anchor rod is formed in the dried concrete, so that the anchor rod can be unscrewed from the dried concrete using a tool, for example a screwdriver, using an anchor gripper.
- the anchor rod is driven out of the dried concrete via this counter-thread formed in the concrete, so that the anchor rod can be removed from the concrete wall formwork in a simple and safe manner.
- an empty pipe is provided for the removal.
- concrete can get into the empty pipes during pouring, so that it is difficult or impossible to remove the anchor rod from the formwork. Such places in the concrete body then have to be rehabilitated at great expense.
- the anchor gripper can advantageously be used in numerous trades that work with anchor types of this type, for example also for bracing in supporting structure construction.
- the anchor gripper has a stop at its first free end, up to which the anchor gripper can be screwed onto the anchor rod.
- This The stop defines the maximum distance that the anchor gripper can be screwed onto the tie rod so that the tie rod lies flush and securely in the anchor gripper receptacle.
- fixing means in particular a threaded nut or lock nut that can be screwed onto the anchor rod, or at least one fixing screw for fixing the anchor gripper to the anchor rod. Because after the anchor gripper has been screwed onto the tie rod, it is fixed to the tie rod with fixing means in order to grip the tie rod of the formwork tie with the anchor gripper in a force-fitting manner.
- These fixing means can be fixing screws, for example grub screws, which fix the anchor gripper on the anchor rod.
- the grub screws can be screwed through threaded holes in the anchor gripper to fix the anchor gripper on the anchor rod.
- the threaded nut or lock nut can fix at least one section of the anchor gripper on the anchor rod.
- the second end of the anchor gripper has an external thread which corresponds to the lock nut, so that the lock nut can be screwed at least partially onto the second end of the anchor gripper.
- the anchor gripper When fixing the anchor gripper on the anchor rod by means of a threaded or lock nut that can be screwed on, a second end of the anchor gripper that faces the anchor rod during assembly can be designed to taper conically, so that when the nut is tightened, the threaded or lock nut presses this second end of the anchor gripper onto the anchor rod pressed so that the anchor gripper is thereby fixed to the anchor rod.
- the anchor gripper has a polygonal, preferably hexagonal, cross-section for applying a tool, in particular a screwing tool. In this way, standard screwing tools, such as cordless screwdrivers, can be placed directly on the anchor gripper with a corresponding attachment and a screwing movement of the screwing tool can be transferred to the anchor gripper.
- a formwork anchor for arranging on formwork elements of a concrete wall formwork with an anchor rod and with an anchor gripper, in particular with an anchor gripper as described above.
- the anchor rod has an essentially continuous external thread, so that it can be loosened and unscrewed from the hardened concrete in a particularly simple manner.
- a counter-thread to the external thread of the anchor rod is created in the hardened concrete, so that the anchor rod can be easily rotated out of the concrete by means of this pair of threads.
- Another advantage of the internal thread formed in the concrete is the possibility of subsequently, i. H. to use this thread after removing the anchor rod, for example for assembly purposes for wall connections, corner formations or the like. This internal thread is easily accessible from both sides of the formwork and can be used with or without lock nuts.
- the anchor rod can be provided with a release agent or lubricant, in particular it can be pretreated.
- This release agent or lubricant can be a stearic or paraffin wax to prevent bonding between be concrete and anchor rod.
- sprayable waxes can be used. It is also conceivable to spray the anchor rod with a concrete release agent.
- Another independent idea of the invention relates to a method for removing a formwork anchor arranged between formwork elements of a concrete wall formwork, with an anchor gripper being screwed onto the formwork anchor and being non-rotatably connected to the formwork anchor to release an anchor rod of the formwork anchor from the concrete and to remove the anchor rod from the concrete wall formwork .
- An advantageous embodiment of the method according to the invention provides that the anchor gripper is screwed onto the anchor rod up to a stop of the anchor gripper.
- the anchor gripper which is screwed onto the anchor rod, in particular onto a free end of the anchor rod, is fixed to the anchor rod.
- the anchor fastening means provided on the formwork anchor, in particular on the formwork heads, are removed.
- the anchor rod can be provided with a release agent or lubricant, preferably stearin or paraffin wax, to prevent a connection between the concrete and the anchor rod.
- a release agent or lubricant preferably stearin or paraffin wax
- the anchor grip placed and fixed on the anchor rod is rotated in a first direction of rotation to release the anchor rod from the concrete, in particular that the anchor rod with the anchor grip to release from the concrete further into the concrete wall formwork is screwed in and after loosening the concrete, the direction of rotation is changed so that the anchor rod is screwed out of the concrete and thus out of the concrete wall formwork by means of the anchor gripper.
- anchor fasteners in particular anchor nuts
- anchor nuts are attached to the formwork elements to hold and/or guide the anchor rod, with the anchor nuts being secured by means of an anchor nut holder against unintentional loosening or falling when the anchor rod is dismantled.
- unscrewing the tie rod the tie nut lying in the course of the thread loosens on the side of the concrete wall formwork opposite the anchor gripper and is now secured by means of the tie nut holder in the event of an uncontrolled fall.
- the tie nut holder can be attached approximately centrically to the tie hole in the formwork. In this way, time and thus costs are saved, especially when used several times on the same construction project, since the anchor nut does not have to be reassembled.
- Figure 1 a concrete wall formwork with formwork elements and with a formwork tie with tie rod
- FIG. 2 shows a concrete wall formwork according to FIG. 1 with an am
- Figure 3 shows the anchor grab according to the invention in a first
- FIG. 4 shows the anchor gripper according to the invention in a second
- FIG. 5 shows a detailed view of the anchor rod with a release agent or lubricant applied to it.
- FIG. 1 shows a concrete wall formwork 15 with formwork elements 5 for concreting concrete walls or structures.
- the two sides of a concrete wall are usually each formed by means of a formwork element 5 .
- the concrete pressure that occurs when the concrete is poured is absorbed by the formwork anchors 10 in such a double-skinned formwork.
- Such a formwork anchor 10 is also shown in FIG.
- a formwork anchor 10 is shown with an anchor rod 3, which is passed through through-holes in the formwork elements 5 and protrudes from the formwork elements 5.
- the formwork tie 10 is fastened to the formwork elements 5 by means of tie rod fastening devices 16, for example anchor nuts.
- the formwork anchor 10 is therefore a connecting element that connects two formwork elements 5 to one another.
- the anchor gripper 1 In order to facilitate the removal of the anchor rod 3 from the hardened concrete wall, the anchor gripper 1 according to the invention is provided.
- the anchor rod 3 is accommodated in an empty tube arranged between the formwork elements 5 in order to remove it from the hardened concrete.
- the empty pipe remains in the concrete component.
- such an empty pipe is not necessary in the case of the present anchor gripper 1 or formwork anchor 10 .
- the early strength development and the sufficient stripping time should not be too advanced. Because then the easy and quick unscrewing of the anchor rod is guaranteed.
- a suitable early strength can be determined, for example, with a so-called kneading bag test.
- experience shows that under optimal conditions, the anchor rod 3 can be loosened and removed from the concrete without any problems even after a few days.
- FIG. 2 shows the concrete wall formwork 15 with the formwork elements 5 and the formwork anchor 10 with the anchor rod 3, the anchor gripper 1 according to the invention being placed on a first free end 4 of the anchor rod 3 and connected to the anchor rod 3 in a torque-proof manner.
- the anchor fastening means 16 are first removed after the concrete has hardened. Then comes the one trained as a tool Anchor gripper 1 is used and is screwed onto an external thread 6 of the outwardly protruding end 4 of the anchor rod 3 and fixed there.
- the anchor gripper 1 is designed as a sleeve with an internal thread 2 which corresponds to the external thread 6 of the anchor rod 3 to form a thread pairing, so that the anchor gripper 1 can be screwed onto a free end 4 of the anchor rod 3 .
- the anchor gripper 1 When the anchor gripper 1 is arranged on the anchor rod 3, the anchor gripper 1 is screwed onto the anchor rod 3 up to a stop 8 of the anchor gripper 1 shown in FIGS. 3 and 4 and then fixed.
- the anchor gripper 1 can be fixed to the anchor rod 3 in various ways by means of fixing means in order to grip the formwork anchor 10 on the anchor rod 3 in a non-positive manner using the anchor gripper 1 and to remove it from the concrete wall.
- these fixing means are fixing screws 11, for example grub screws, which fix the anchor gripper 1 by screwing the fixing screws 11 through threaded holes 12 of the anchor gripper 1 in the direction of the anchor rod 3 and fixing the anchor gripper 1 to the anchor rod 3.
- the further embodiment of the invention according to FIG. 4 shows a fixation of the anchor gripper 1 on the anchor rod 3 by means of screw-on threaded or lock nuts 9.
- a second end 13 of the anchor gripper 1 which faces the anchor rod 3 during the assembly of the formwork anchor 10, can be designed to taper conically. so that the threaded or lock nut 9 presses this second end 13 onto the anchor rod 3 in the direction of the anchor gripper 1 by tightening the nut 9 in order to fix the anchor gripper 1 on the anchor rod 3 .
- the second end 13 of the anchor gripper 1 has an external thread 14 which corresponds to the lock nut 9 so that the lock nut 9 can be at least partially screwed onto the end 13 of the anchor gripper 1 .
- a screwing tool (not shown here), for example a cordless screwdriver, can be placed on the anchor gripper 1 so that the anchor rod 3 is then detached from the hardened concrete and removed from the concrete wall formwork 15 .
- the anchor gripper 1 is rotated in a first direction of rotation by means of the screwing tool, so that the anchor rod 3, which is non-positively connected to the anchor gripper 1, also moves in the first direction of rotation.
- the anchor rod 3 with the anchor gripper 1 is initially screwed further into the concrete wall formwork 15 in order to release it from the concrete.
- the direction of rotation of the screwing tool is reversed so that the anchor rod 3 is completely unscrewed from the concrete and thus from the concrete wall formwork 15 by means of the positively connected anchor gripper 1 .
- the anchor rod 3 is only coming in from one side of the concrete wall formwork 15 or unscrewed. This one-sided operability leads to significantly lower personnel requirements and thus to time and cost savings.
- the anchor gripper 1 for applying the tool in particular the screwing tool, has a polygonal cross-section, in this case a hexagonal cross-section.
- a rotary movement can be transmitted via the anchor gripper 1 to the anchor rod 3, so that the anchor rod 3 rotates in the hardened concrete layer.
- the anchor rod 3 has a continuous external thread 6 so that it can be loosened and unscrewed from the hardened concrete in a particularly simple manner.
- the detailed view according to FIG. 5 shows that the anchor rod 3 is provided with a separating agent or lubricant 17 to simplify detachment from the hardened concrete, in particular it is pretreated, this being a stearin or paraffin wax to prevent a connection between concrete and anchor rod 3 can act.
- This release agent or lubricant 17 can be applied to the anchor rod 3 before the formwork anchor 10 is installed.
- sprayable waxes can be used. It is also conceivable to spray the anchor rod with a concrete release agent.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020126213.2A DE102020126213B3 (de) | 2020-10-07 | 2020-10-07 | Ankergreifer zum Entfernen eines Schalungsankers, Schalungsanker zum Anordnen an Schalungselementen einer Betonwandschalung, Verfahren zum Entfernen eines Schalungsankers |
PCT/EP2021/077111 WO2022073873A1 (de) | 2020-10-07 | 2021-10-01 | Ankergreifer zum entfernen eines schalungsankers, schalungsanker zum anordnen an schalungelementen einer betonwandschalung, verfahren zum entfernen eines schalungsankers |
Publications (3)
Publication Number | Publication Date |
---|---|
EP4226004A1 true EP4226004A1 (de) | 2023-08-16 |
EP4226004C0 EP4226004C0 (de) | 2024-07-03 |
EP4226004B1 EP4226004B1 (de) | 2024-07-03 |
Family
ID=78085651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21787348.8A Active EP4226004B1 (de) | 2020-10-07 | 2021-10-01 | Anordnung zum entfernen eines schalungsankers, schalungsanker zum anordnen an schalungelementen einer betonwandschalung, verfahren zum entfernen eines schalungsankers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP4226004B1 (de) |
DE (1) | DE102020126213B3 (de) |
WO (1) | WO2022073873A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114753626B (zh) * | 2022-05-18 | 2024-08-06 | 广东省建筑工程集团有限公司 | 一种用于结合铝木模板的连接件及使用方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH485097A (de) * | 1968-01-26 | 1970-01-31 | Brandstaetter Rolf | Schalungsspanner |
US3613216A (en) * | 1967-06-05 | 1971-10-19 | Chester I Williams | Method for securing forms from a position of safety |
JP2000345705A (ja) * | 1999-06-08 | 2000-12-12 | Yoshitaka Hirukotani | コンクリート壁突出ボルト除去装置 |
CN201133080Y (zh) * | 2007-12-05 | 2008-10-15 | 中国水利水电第五工程局 | 可方便拆卸的对拉螺栓配套装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3122873A1 (de) | 1981-06-10 | 1983-01-13 | Betomax Kunststoff- Und Metallwarenfabrik Gmbh & Co Kg, 4040 Neuss | "aus einem anlagestueck und einem mutternkoerper bestehende vorrichtung, insbesondere fuer das bauwesen" |
DE29612397U1 (de) | 1996-07-17 | 1996-09-19 | Kempf, Robert, 63755 Alzenau | Zweiteiliger Werkzeugeinsatz zum Eindrehen bzw. Ausdrehen von Gewindestangen |
DE102007031107A1 (de) | 2007-07-04 | 2009-01-08 | Stahlwerk Annahütte Max Aicher GmbH & Co. KG | Ankerstab für eine Schalung |
DE102012203678A1 (de) | 2012-03-08 | 2013-09-12 | Peri Gmbh | Ankerstabbefestigungsvorrichtung, Schalungsanker sowie Betonwandschalung |
US9528284B2 (en) | 2014-04-07 | 2016-12-27 | Kadar Developments Ltd. | Concrete form snap tie breaker |
-
2020
- 2020-10-07 DE DE102020126213.2A patent/DE102020126213B3/de active Active
-
2021
- 2021-10-01 EP EP21787348.8A patent/EP4226004B1/de active Active
- 2021-10-01 WO PCT/EP2021/077111 patent/WO2022073873A1/de unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613216A (en) * | 1967-06-05 | 1971-10-19 | Chester I Williams | Method for securing forms from a position of safety |
CH485097A (de) * | 1968-01-26 | 1970-01-31 | Brandstaetter Rolf | Schalungsspanner |
JP2000345705A (ja) * | 1999-06-08 | 2000-12-12 | Yoshitaka Hirukotani | コンクリート壁突出ボルト除去装置 |
CN201133080Y (zh) * | 2007-12-05 | 2008-10-15 | 中国水利水电第五工程局 | 可方便拆卸的对拉螺栓配套装置 |
Non-Patent Citations (1)
Title |
---|
See also references of WO2022073873A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102020126213B3 (de) | 2021-12-30 |
WO2022073873A1 (de) | 2022-04-14 |
EP4226004C0 (de) | 2024-07-03 |
EP4226004B1 (de) | 2024-07-03 |
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