EP4263976A1 - Spannschloss zum verspannen von rahmenschalungselementen - Google Patents
Spannschloss zum verspannen von rahmenschalungselementenInfo
- Publication number
- EP4263976A1 EP4263976A1 EP21839357.7A EP21839357A EP4263976A1 EP 4263976 A1 EP4263976 A1 EP 4263976A1 EP 21839357 A EP21839357 A EP 21839357A EP 4263976 A1 EP4263976 A1 EP 4263976A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tooth
- track
- clamping device
- teeth
- turnbuckle
- 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
Links
- 238000009415 formwork Methods 0.000 title claims abstract description 74
- 210000000078 claw Anatomy 0.000 description 14
- 238000010276 construction Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 241000017561 Anoplogasteridae Species 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 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
- E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
-
- 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
- E04G17/04—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements
- E04G17/045—Connecting or fastening means for metallic forming or stiffening elements, e.g. for connecting metallic elements to non-metallic elements being tensioned by wedge-shaped elements
-
- 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
- E04G17/02—Connecting or fastening means for non-metallic forming or stiffening elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/06—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips
- F16B5/0607—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of clamps or clips joining sheets or plates to each other
Definitions
- the invention relates to a turnbuckle for clamping frame formwork elements according to the preamble of claim 1.
- a generic turnbuckle is known from WO 2005/007997 A1.
- Panel formwork elements are used to erect boundaries for bodies to be cast, in particular concrete bodies, such as parts of buildings. In order to obtain borders that can be poured out, several panel formwork elements usually have to be firmly connected or clamped together. Turnbuckles, which are also referred to as alignment locks, are used to brace the panel formwork elements.
- turnbuckles are used to connect adjacent panel formwork elements flush, flush and tightly to one another.
- Turnbuckles are used in particular to connect or brace two adjacent frame formwork elements to one another, with inner corners, outer corners, articulated corners and end formwork in particular also being able to be connected using the turnbuckles.
- the turnbuckles can also be used to connect a panel formwork element to an adjacent compensation element.
- Compensation elements are used to achieve length compensation and are typically arranged between two conventional panel formwork elements.
- the compensating elements are mostly made of wood, steel or aluminum.
- Conventional frame formwork elements generally have a formwork skin, a preferably peripheral frame with at least vertically running frame elements and horizontally running struts for stabilizing the frame.
- the braces generally run horizontally between two vertical frame members of the frame.
- vertical struts can also be provided in order to additionally stabilize the frame.
- Compensating elements can have a different structure, but as a rule a peripheral frame is also provided.
- compensation elements also represent panel formwork elements.
- turnbuckles are arranged in the area of the intersections of horizontally running struts and vertically running frame elements of the frame.
- One each The clamping jaw of the turnbuckle encompasses a section of a vertically running frame element of two panel formwork elements to be connected.
- the two clamping jaws and thus the panel formwork elements are then braced against one another by means of a wedge, ie the clamping jaws are moved towards one another.
- the turnbuckle generally has a traverse and a first clamping jaw, which is typically immovably connected to the traverse. Furthermore, the turnbuckle has a second clamping jaw, the second clamping jaw being displaceable in a clamping direction along the longitudinal axis of the traverse in the direction of the first clamping jaw in order to clamp the panel formwork elements.
- the clamping jaws preferably each have two claws, the two claws of a clamping jaw being at a distance from one another in such a way that a horizontal brace can be accommodated between the two claws.
- Such clamping jaws are also referred to as claws.
- turnbuckles are used adjacent.
- the turnbuckles are then typically on a straight line, z. B. among themselves, d. H. vertically offset from each other, arranged with parallel clamping movements of the clamping jaws.
- turnbuckles should be suitable for connecting panel formwork elements whose frames have different strengths, for example depending on whether external corners, articulated corners or the like are to be connected.
- the turnbuckle has a quick adjustment, so that the distance between the two clamping jaws of the turnbuckle can be quickly and easily set to the desired size adjusted, the turnbuckle attached and then the panel formwork elements braced.
- the turnbuckles should therefore have a suitable span, which should be able to be adjusted quickly.
- high forces can be applied in the short term so that the turnbuckle, when attached to two panel formwork elements, can reliably fix or brace them.
- the aforementioned turnbuckles which are tightened with a combination of hammer and wedge, have proven to be suitable for this.
- turnbuckles are known from the prior art, which can be operated without hitting tools.
- a length adjustment via a spindle is known, but this does not allow quick adjustment.
- turnbuckles known from the prior art are predominantly complex to handle or have bulky, bulky constructions.
- turnbuckles have prevailed in which the two clamping jaws, as described above, can be moved towards one another and braced with one another by means of a wedge that is driven in by a striking tool.
- Such turnbuckles have become established because on the one hand these turnbuckles ensure a flush, aligned and tight connection between frame formwork elements, and on the other hand such turnbuckles allow quick adjustment in order to adjust the turnbuckles to different spans between the frames of the frame formwork elements to be connected.
- Such a turnbuckle is disclosed in the generic document.
- the generic document describes that the direction in which the wedge is driven into the turnbuckle and the bracing direction enclose an angle a ⁇ 90° in order to improve the operation of the wedge.
- the object of the present invention is to improve the prior art, in particular to provide a turnbuckle for clamping panel formwork elements, in which the two clamping jaws can be moved towards and against one another easily and quickly can be clamped so that a tight connection can be produced between two panel formwork elements to be clamped.
- the turnbuckle according to the invention according to claim 1 for clamping frame formwork elements has a first clamping device, having a traverse and a first clamping jaw.
- the traverse has a guide section with a row of track teeth arranged one behind the other and running parallel to one another.
- the turnbuckle according to the invention has a second clamping device, having a second clamping jaw.
- the second clamping device can be displaced in a bracing direction along the longitudinal axis of the traverse in the direction of the first clamping jaw.
- the tracking teeth each extend in an arc from the direction of a first longitudinal edge of the traverse towards a second longitudinal edge of the traverse.
- the second clamping device has at least one curved support tooth which can be rotated about an axis of rotation, with the support tooth being able to be screwed into a track between two track teeth and engaged with one of the track teeth by means of a turning movement, and with a gradient of the curved profile of the support tooth and a slope of the arcuate profile of the track teeth are adapted to one another in such a way that, after the support tooth has been brought into engagement with a track tooth, a further screwing-in movement of the support tooth applies a force to the second clamping device that is suitable for moving the second clamping device in the bracing direction to press.
- the turnbuckle according to the invention has an easy-to-use and robust structure with two clamping devices, the first clamping device being designed in a known manner with a crossbar and a first clamping jaw, and the second clamping device, which has a second clamping jaw, along the longitudinal axis of the crossbar in Direction is displaceable on the first jaw.
- This design has basically proven itself in practice, in particular since this type of movement allows a quick adjustment to be implemented in a simple manner. This means that the span or the distance between the two clamping jaws of the turnbuckle can be set quickly and easily to the distance that is required to clamp two panel formwork elements.
- Such a structure is known in principle from the prior art.
- the track teeth and the support tooth are preferably arranged in such a way or matched to one another with regard to the slope of their arcuate courses in such a way that the force applied to the clamping device preferably increases steadily the further the support tooth is screwed in.
- the arcuate course of the support tooth preferably corresponds to a worm geometry in such a way that turning in the support tooth causes a pulling movement on the track teeth of the traverse.
- the support teeth and the tracking teeth are configured in such a way that the lever ratio improves with increasing screwing-in movement and thus the force that presses the second clamping device in the bracing direction increases.
- the turnbuckle according to the invention can be realized in that the principle of a worm gear is realized or implemented two-dimensionally by the rotatable support tooth and the track teeth, which are formed on the guide section of the traverse.
- the geometry of a worm gear is transferred to the traverse.
- a toothing formed in this way which can also be referred to as rotary toothing, is particularly suitable for achieving that the second clamping device is pressed in the clamping direction.
- the screwing-in movement of the supporting tooth can be easily achieved without the use of a hammer, which reduces the noise on the construction site. Furthermore, a screwing-in movement and also a screwing-out movement can be implemented without requiring additional space above or below the turnbuckle, as is the case with the hammer/wedge solution from the prior art.
- the turnbuckle according to the invention can also be mounted on the lowest strut of a frame formwork element, since no additional space is required below the strut to operate the turnbuckle.
- the support tooth and the track teeth can be designed in a simple manner, in particular by choosing a suitable pitch, in such a way that the turnbuckle is prevented from opening by itself due to self-locking.
- the track teeth preferably have a gradient of >5 degrees, in particular 7 degrees and greater.
- the gradient can preferably be 5 degrees to 15 degrees, more preferably 5 degrees to 12 degrees, in particular 7 degrees to 10 degrees. These values have proven to be particularly suitable.
- the pitch of the track teeth preferably increases.
- the gradient is preferably between 5 degrees and 12 degrees, in particular between 7 degrees and 10 degrees.
- the force with which the second clamping device is pressed in the bracing direction can be adjusted.
- the turnbuckle according to the invention can be used to achieve stepless adjustment, in particular by the fact that the offset or the distance between the track teeth or their pitch is selected such that there is always a suitable track into which the support tooth can be screwed or the distance to an adjacent track is selected in such a way that if the bracing force to press the clamping device in the bracing direction is not sufficient to brace the frame formwork elements, the support tooth is screwed into an adjacent track (in the bracing direction), as a result the second clamping device is already displaced further in the clamping direction at the beginning of the screwing-in movement, i.e. in the direction of the first clamping jaw, so that further screwing in of the supporting tooth causes a correspondingly greater force with which the second clamping device is pressed in the clamping direction.
- More than one supporting tooth can also be provided. It is possible that several carrier teeth enter the same track one after the other. Furthermore, a plurality of support teeth can also be provided, which move into different, preferably adjacent, tracks.
- the arcuate profile of the support tooth and/or the arcuate profile of the tracking teeth is an involute at least in sections, preferably completely.
- arcuate course of the support tooth and the arcuate course of the track teeth is an involute at least in sections, preferably completely.
- the arcuate shape of the support tooth and/or the arcuate shape of the track teeth has a curvature at every point such that an involute results.
- the support tooth preferably has an arcuate profile that extends over an angular range of 10 to 180 degrees, preferably over 20 to 130 degrees, in particular over 30 to 110 degrees, more preferably over 40 to 100 degrees, in particular over 50 to 90 degrees .
- the second clamping device has a turntable, the support tooth being formed on a main surface of the turntable and the axis of rotation about which the support tooth can be rotated is the axis of rotation of the turntable.
- An arrangement of the support tooth on a main surface of a preferably flat turntable has proven to be particularly suitable for turning the support tooth into a track between two track teeth.
- the turntable can preferably be circular.
- the support tooth is preferably formed on a main surface of the turntable, which constitutes an underside of the turntable, ie faces the traverse.
- the turntable preferably has a diameter that is larger than the width of the traverse or an upper side of the traverse.
- the support tooth preferably extends on the main surface of the turntable over an angular range of 10 to 180 degrees, preferably 20 to 130 degrees, in particular 30 to 110 degrees, more preferably 40 to 100 degrees, in particular 50 to 90 degrees.
- a stop preferably a stop pin, is provided, which limits the screwing-in movement of the support tooth.
- a stop By means of a stop, preferably a stop pin, it is possible to haptically and/or optically transmit information to the user as to the position at which the supporting tooth is currently located or how far the supporting tooth is screwed in, in particular whether it is completely in a track between two track teeth is screwed in or completely screwed out. If the operator finds that the support tooth has been screwed in completely and the tensioning force generated is still insufficient, the user can remove the support tooth from the track again by turning it out and screw the support tooth into a further track running ahead in the bracing direction in order to increase the tensioning force .
- the stop is preferably rigidly connected to the turntable.
- the turntable is rotatably accommodated in a housing part of the second clamping device, the housing part being immovably connected to the second clamping jaw and wherein the housing part has a circular arc-shaped recess within which the stop can be moved.
- the arrangement of the turntable in a housing part which at least partially surrounds the turntable is advantageous, with the housing part preferably enclosing the turntable at least on an upper side.
- the turntable can have recesses in order to form the circular recess and/or a passage for the axis of rotation.
- the housing part can advantageously accommodate the turntable, ensure rotatability and protect the turntable from damage.
- the housing part is preferably immovably or rigidly or firmly connected to the second clamping jaw. It is advantageous if the housing part has a circular arc-shaped recess within which the stop, preferably a stop pin, can be moved.
- the stop or the stop pin preferably protrudes into the circular arc-shaped recess.
- the front ends of the arcuate recess can be used as end stops, so that the operator can tell whether the support tooth is fully screwed in or fully screwed out or in which intermediate position it is currently located.
- the arcuate recess in the housing part is designed in such a way that the position of the stop within the arcuate recess is visible to the operator when operating the turntable.
- the arcuate recess is preferably formed in a surface of the housing part which at least partially covers an upwardly directed main surface of the turntable, ie the upper side of the turntable. As a result, the stop protruding into the arcuate recess is clearly visible to the operator of the turntable.
- the axis of rotation of the turntable has an input member, preferably a sleeve or a stub pipe, to which a tool can be attached in order to turn the turntable.
- the input member of the turntable preferably a sleeve or a stub pipe, preferably protrudes through a corresponding opening in the housing part, so that the turntable is easy for the operator to operate.
- the input member can have a design that can be easily operated with conventional tools, preferably as quietly as possible, preferably also in such a way that appropriate forces can be applied quickly and easily to bring the support tooth into engagement with one of the track teeth and the desired force exercise in bracing on the second clamping device. It is advantageous if the input element of the axis of rotation has a profile which can be operated by means of a polygonal drive, preferably a hexagonal drive, or a hammer tip or an anchor rod, in particular a dywidag rod.
- the input element has a profile or a carrier profile which can be operated by means of a polygonal drive, preferably a hexagonal drive or also a square drive, in particular a ratchet or a wrench. It has also proven to be suitable if the input member is designed in such a way, for example by being designed as a stub pipe with a bore, that it is possible to operate the input member with a hammer tip or an anchor rod, in particular a dywidag rod frequently used on construction sites . This enables easy handling of the turnbuckle according to the invention on the construction site.
- tracking teeth are arranged in a uniform grid dimension.
- the offset (and thus the slope) around the two adjacent track teeth are offset from one another by 5 mm to 40 mm, preferably 6 mm to 35 mm, more preferably 6 mm to 30 mm, even more preferably 8 mm to 25 mm, very particularly preferably 10 mm to 20 mm, in particular 16 mm to 17 mm.
- the aforementioned values have proven to be particularly suitable, with the track teeth preferably each having a uniform grid dimension using the aforementioned values for the offset between two adjacent track teeth.
- the offset between two track teeth is to be understood as the offset by which two adjacent track teeth are offset from one another in the longitudinal direction of the traverse, as is shown with the reference symbol Z in FIG.
- the second clamping device is captively connected to the traverse of the first clamping device.
- a captive design in the clamping direction of the second clamping device results in a simple manner in that the first clamping jaw stands in the way of the second clamping jaw, so that protection against loss is formed in the clamping direction.
- an anti-loss device can preferably be implemented in that the traverse has a projection, for example in that a projection is formed or introduced in some other way in the end of the traverse facing away from the first clamping jaw.
- the second clamping device or the Traverse have a pin or generally have a stop element, so that a removal of the second clamping device against the clamping direction of the traverse is positively prevented.
- the arcuate course of the supporting tooth is selected in such a way that the supporting tooth can be rotated into a release position in which the supporting tooth does not impede movement of the second clamping device in or against the bracing direction.
- Such a design can be achieved in a simple manner by a suitable arcuate course of the support tooth, in particular by the fact that the unscrewing movement of the support tooth from a track between two track teeth can be far enough so that the support tooth can move the second clamping device in or is possible against the clamping direction.
- the second clamping device can be displaced along the guide section of the first clamping device when the carrier tooth is not in engagement with one of the tracking teeth.
- the arcuate course of the track teeth is selected in such a way that the track teeth enable stepless adjustment.
- the support tooth can be unscrewed again and brought into engagement with an adjacent track tooth.
- the beginning of the adjacent track tooth is positioned in such a way that right at the beginning, and thus steplessly, when the supporting tooth is screwed in, a force results that corresponds to the force at the end of the screwing-in movement in the aforesaid track tooth was present between the support tooth and the track tooth.
- the track teeth and their courses are preferably designed in such a way that the start of a track tooth follows the end of an adjacent track tooth that trails in the bracing direction.
- the track teeth preferably act together as if it were a single common track tooth or a rotating worm gearing.
- the second clamping device has an underside that can be screwed in together with the support tooth, with the catching tooth running ahead of the support tooth in the screwing-in direction, so that the catching tooth first enters one of the tracks between two track teeth.
- a catch tooth has proven to be particularly suitable for turning the support tooth reliably and without collision into the intended track. This is particularly suitable since no significant load is applied to the catch tooth and it can therefore be driven into the track between two track teeth without any damage to be expected. Even if the fang hits the tip of a trailing tooth, there is no risk of damage since the fang is not subjected to any significant load.
- the catch tooth ensures that the following support tooth does not hit a tip of a track tooth when engaging or entering a track, thereby reliably avoiding damage that could otherwise occur since the support tooth transmits high forces.
- the user has the option, without damage occurring, to move the second clamping device slightly in or against the bracing direction, so that the fang tooth moves into a track between two spur teeth.
- the catch tooth makes it possible for the following support tooth to already be aligned with a track between two track teeth before the support tooth enters the track.
- the catch tooth thus serves as a single-track tooth or as a centering lug.
- the catch tooth and the support tooth are preferably formed on the same main surface, preferably an underside of the turntable.
- the offset between two adjacent track teeth and the offset between the fang and the supporting tooth is formed such that when the fang in a track enters between two track teeth, the support tooth, without colliding with an end face of one of the track teeth, enters a further track between two track teeth that is offset in the bracing direction.
- Such a selection of the offset or the distance--viewed in the chipping direction--between two adjacent track teeth or between the catching tooth and the supporting tooth can reliably ensure collision-free retraction of the supporting tooth.
- the distances are such that the fang and the support tooth move into adjacent tracks or a track between the fang and the support tooth remains free.
- the fang has a length that is less than 50%, preferably less than 40%, more preferably less than 30%, even more preferably less than 20%, in particular less than 10%, the length of the curved course of the supporting tooth.
- the fang and the supporting tooth can be of identical design. However, it has turned out to be particularly suitable if the fang has a significantly shorter length than the supporting tooth. Since the fang only has the task of ensuring that the carrier tooth is driven into the track without colliding, a significantly shorter length is sufficient here, which also ensures that the fang is easy to produce and that the turning movement of the carrier tooth in and out is not otherwise disturbed or impeded Even after entering the track, if possible does not come into engagement with a track tooth.
- the second clamping device has an arc-shaped secondary support tooth which can be screwed into one of the tracks between two track teeth and engaged with one of the track teeth by the screwing-in movement, preferably a track tooth which engages with the track tooth on which the support tooth engages , Is adjacent, wherein the supporting tooth is arranged in front of the secondary supporting tooth in the screwing-in direction.
- the clamping device has a supporting tooth in order to exert a suitable force on the clamping device in the clamping direction.
- the second clamping device has an arc-shaped secondary supporting tooth in addition to the supporting tooth.
- the supporting tooth and the secondary supporting tooth form a double involute.
- the arcuate shape of the secondary support tooth can preferably correspond to the arcuate shape of the support tooth, but it is also possible for the secondary support tooth to have a length that is longer or shorter than the length of the support tooth.
- the turntable is arranged in the width direction of the traverse in such a way that the axis of rotation of the turntable is located centrally between the longitudinal edges of the traverse and runs orthogonally to a surface of the traverse.
- Such an arrangement of the turntable with respect to the traverse has proven to be particularly suitable, in particular to operate the turntable advantageously and to retract the support tooth and, if necessary, the fang tooth and/or the secondary support tooth in the desired manner into tracks between two track teeth.
- the axis of rotation runs orthogonally to a surface of the traverse results in a particularly suitable operation of the axis of rotation when the turnbuckle is fastened to two panel formwork elements in the usual way.
- the axis of rotation then runs in the horizontal direction, namely orthogonally to the surface of the frame formwork elements, so that operation is possible for the operator in a simple manner.
- the turntable is designed as an eccentric disk or the turntable has an eccentrically arranged axis of rotation.
- a span of a distance between the first clamping jaw and the second clamping jaw is 0 mm to 400 mm, preferably 0 mm to 350 mm, more preferably 0 mm to 300 mm, in particular 0 mm to 250 mm.
- the lower value of the distance in the aforementioned examples is not 0 mm, but 80 mm, preferably 100 mm. This is because it is generally not necessary to push them together in such a way that the clamping jaws touch.
- the aforementioned values for the span between the first clamping jaw and the second clamping jaw mean that the turnbuckle can be constructed in a cost-effective and robust manner.
- the turnbuckle can also be quickly and easily adjusted to the desired size. It has happened shown that the aforementioned spans are sufficient to connect the common frame formwork elements with each other.
- the turnbuckles used clamp a typically straight boundary line between the frame formwork elements.
- the turnbuckles are preferably arranged one below the other or one above the other on a straight line that runs parallel to this boundary line, with the bracing movements of the clamping jaws of the turnbuckles running parallel to one another.
- the first clamping device and the second clamping device are preferably forged parts.
- the clamping jaws and the traverse are preferably made of steel.
- the traverse is preferably a rolled tube.
- the tracking teeth in the traverse are preferably produced by profiling the tube.
- the fang preferably has a maximum thickness of 3.5 mm to 5 mm, preferably 3.8 mm to 4.8 mm, in particular 4.3 mm, possibly +/- 0.2 mm.
- the distance between the beginning and the end of the fang, i.e. the two tips, is preferably 6 mm to 15 mm, more preferably 8 mm to 12 mm, in particular 9.6 mm, possibly +/- 0.4 mm.
- the support tooth preferably has a maximum thickness of 4 mm to 7 mm, preferably 4 mm to 6 mm, in particular 5 mm, possibly +/- 0.2 mm.
- the distance between the beginning and the end of the support tooth, i.e. the two tips, is preferably 50 mm to 80 mm, more preferably 60 mm to 75 mm, in particular 68.9 mm, if necessary +/- 2 mm.
- the majority of the track teeth particularly preferably all track teeth, have a thickness that varies over the length of the track teeth.
- Most of the track teeth, preferably all track teeth have a maximum thickness in the range of 3.5 mm to 7 mm, preferably 4 mm to 6 mm, in particular 4.6 to 5 mm.
- the distance between the beginning and the end of one of the tracking teeth, i.e. its two tips, is preferably 15 mm to 40 mm, more preferably 20 mm to 30 mm, in particular 24 mm, possibly +/- 2 mm.
- the turnbuckle can be operated in a particularly advantageous manner. Furthermore, the turnbuckle can be produced in a particularly simple manner with a pivot axis arranged in this way; in particular, the track teeth can be formed particularly advantageously on the upper side of the crossbeam.
- the upper side of the traverse is also referred to as the surface of the traverse in the application.
- the first longitudinal edge of the traverse and the second longitudinal edge of the traverse delimit the traverse in the width direction (transverse to the longitudinal axis).
- the upper side of the traverse is formed between the first longitudinal edge of the traverse and the second longitudinal edge of the traverse.
- the upper side of the traverse is the surface or side of the traverse that faces away from an underside of the traverse that serves to rest against the panel formwork elements to be braced.
- the traverse is preferably a tube, in particular a rolled tube, with the track teeth being formed on the upper side, preferably by profiling the tube.
- the underside of the traverse facing away from the top is preferably used to rest against the frame formwork elements to be braced.
- the traverse preferably also has two side surfaces which extend orthogonally to the top and which preferably run plane-parallel to one another in order to connect the top of the traverse to the underside of the traverse.
- the upper side, the lower side and the two side surfaces preferably form a rectangle when viewed in cross-section of the traverse.
- the support tooth is formed on a main surface of the rotating disc, which is a bottom side of the rotating disc, i. H. facing the traverse.
- the bottom of the turntable or the main surface runs plane-parallel to the top of the traverse.
- the screwing-in movement of the supporting tooth runs in a plane which preferably runs at least approximately plane-parallel to the upper side or the surface of the traverse.
- the first clamping jaw and the second clamping jaw protrude with their clamping surfaces beyond the underside of the traverse. Provision can be made for the first clamping jaw and/or the second clamping jaw to have claws, preferably two claws each, preferably at their ends, preferably in such a way that two panel formwork elements to be clamped together are preferably located between the underside of the traverse and the clamping jaws are clamped together between the clamping surfaces and in particular the claws.
- FIG. 1 shows an arrangement of three frame formwork elements, the middle frame formwork element being clamped to the outer frame formwork elements via three turnbuckles according to the invention
- FIG. 2 shows a perspective view of a turnbuckle
- FIG. 3 shows a perspective representation of a turnbuckle according to FIG. 1 with a partial section through a housing part and a rotary disc of a second clamping device of the turnbuckle;
- FIG. 4 shows a perspective illustration of a turnbuckle according to FIG. 1 with a partial section
- FIG. 5 is a plan view of a turnbuckle in a sectional view showing the turnbuckle in an embodiment with a support tooth and a secondary support tooth;
- FIG. 6 shows an illustration according to FIG. 5, with the support tooth and the secondary support tooth each being in engagement with a track tooth;
- FIG. 7 shows a view of an underside of a second clamping device of a turnbuckle in an embodiment with a supporting tooth and a secondary supporting tooth;
- FIG. 8 shows a cross section through a second clamping device of a turnbuckle
- FIG. 9 shows a plan view of a turnbuckle with a partial section through a housing and a rotary disk of a second clamping device in an embodiment with a supporting tooth and a catching tooth in a release position;
- FIG. 10 shows a perspective illustration of the turnbuckle according to FIG. 9;
- FIG. 11 shows an illustration according to FIG. 9 in a position in which the catching tooth and the supporting tooth have each moved into a track between the track teeth
- FIG. 12 shows a perspective representation of the turnbuckle according to FIG. 11;
- FIG. 13 shows an illustration according to FIG. 9 in a position in which the support tooth has moved into a track between two track teeth up to its end position;
- FIG. 14 shows a perspective illustration of the turnbuckle according to FIG. 13;
- FIG. 15 shows a perspective representation of a second clamping device of the turnbuckle
- FIG. 16 shows a view of an underside of a clamping device of a turnbuckle, in an embodiment with a supporting tooth and a catching tooth;
- FIG. 17 shows a section through the second clamping device according to FIG. 15;
- Figure 18 is a sectional plan view of a turnbuckle showing the turnbuckle in a configuration having a support tooth and a fang;
- Figure 19 shows an enlarged view of detail IXX from Figure 18.
- FIG. 1 shows six turnbuckles 1 according to the invention, which connect panel formwork elements 2 to one another.
- a panel formwork element 2 in the center in the plane of the figure forms a right-angled outer corner with a panel formwork element 2 on the right in the plane of the figure.
- three turnbuckles 1 are provided, for example.
- the frame formwork element 2 in the middle in the plane of the drawing is also connected to a frame formwork element 2 on the left in the plane of the picture, which run together in one plane, also by means of three turnbuckles 1 according to the invention.
- the turnbuckles 1 according to the invention are fundamentally suitable for connecting or bracing two adjacent panel formwork elements 2 to one another, with inner corners, outer corners, articulated corners and stop ends being able to be connected using the turnbuckles 1 according to the invention.
- the turnbuckles 1 according to the invention are also suitable for connecting a panel formwork element 2 to an adjacent compensating element.
- Such compensating elements also represent frame formwork elements within the scope of the present invention.
- the frame formwork elements 2 to be connected can preferably be made of wood, plastic, steel or aluminum.
- the turnbuckles 1 according to the invention can be used to connect adjoining frame formwork elements 2 flush, aligned and tightly to one another.
- the turnbuckles 1 according to the invention serve in particular to connect two panel formwork elements 2 positioned next to one another, which run in a common plane, to one another, as illustrated in FIG.
- the turnbuckles 1 according to the invention are generally arranged in the area of intersections of horizontally running struts 3 and vertically running frame elements 4 of the panel formwork elements 2, as is shown by way of example with regard to the panel formwork element 2 in the center of the image plane and the left panel formwork element 2 in Figure 1.
- the panel formwork elements 2 have, in a manner not described in detail, a formwork skin which faces the material to be filled and hardened.
- the frame formwork elements 2 are preferably frame formwork elements for producing bodies to be cast, in particular concrete bodies, in particular parts of buildings.
- the frame formwork elements 2 abut one another in a known manner with an interface.
- the boundary surface is shown in FIG.
- the boundary line 5 is each spanned by three turnbuckles 1 .
- the turnbuckles 1 each also span a vertically running frame element of the frame formwork elements 2 to be connected to each other. Furthermore, the turnbuckles 1 are preferably arranged on the horizontally running struts 3 of the frame formwork elements 2, in particular in the same way as is the case with the three turnbuckles 1, which are the middle one Connect frame formwork element 2 to the left frame formwork element 2, is shown.
- FIGS. 2 to 19 show the turnbuckle 1 according to the invention for clamping frame formwork elements 2 in various embodiments.
- the turnbuckles 1 shown in FIGS. 2 to 19 have a first clamping device 6 and a second clamping device 7, which together form the turnbuckle 1 in the exemplary embodiment.
- the first clamping device 6 has a traverse 8 which is preferably designed in one piece with a first clamping jaw 9 .
- the first jaw 9 is rigidly or fixedly or immovably connected to the traverse 8 .
- the traverse 8 has a guide section 10 with a row of track teeth 11 arranged one behind the other and running parallel to one another.
- the guide section 10 is formed on an upper side of the traverse 8 .
- the traverse 8 is essentially a tubular element or a toothed rack, preferably with an essentially rectangular cross section.
- the guide section 10 is formed in one piece with the upper side of the traverse 8 or the guide section 10 is provided by the upper side of the traverse 8 .
- the track teeth 11 can be formed, preferably embossed, from the upper side of the traverse 8 using known measures, or can be connected to the upper side of the traverse 8 in a suitable manner.
- the track teeth 11 extend in an arc from the direction of a first longitudinal edge 12 of the traverse 8 in the direction of a second longitudinal edge 13 of the traverse 8.
- the track teeth 11 protrude beyond the top of the traverse 8 addition.
- the second clamping device 7 of the turnbuckle 1 has a second clamping jaw 14 .
- the first jaw 9 and, analogously, the second jaw 14 each have two claws 9a and 14a, respectively.
- the distance between the claws 9a and 14a is chosen such that a horizontally running strut 3 can be accommodated between the claws 9a and the claws 14a.
- the second clamping jaw 14 can be displaced in a bracing direction along the longitudinal axis of the traverse 8 in the direction of the first clamping jaw 9 .
- the bracing direction is denoted by the arrow A in FIGS.
- the second clamping device 7 has an arc-shaped supporting tooth 15 which can be rotated about an axis of rotation 16 .
- the support tooth 15 can be screwed into a track 17 between two track teeth 11 and engaged with one of the track teeth 11 by a turning movement.
- a slope of the curved course of the support tooth 15 and a slope of the curved course of the track teeth 11 is adapted to one another in such a way that, after the support tooth 15 has been brought into engagement with a track tooth 11, a further screwing-in movement of the support tooth 15 causes the second clamping device 7 to have a Force applied, which is suitable to press the second clamping device 7 in the clamping direction.
- FIGS. 9 to 14 The turning of the support tooth 15 into a track 17 between two track teeth 11 is shown in FIGS. 3 to 7, in FIGS. 9 to 14, in FIG. 16 and in FIG. A particularly good representation of different positions of the support tooth 15 is shown in FIGS. 9 to 14.
- FIGS. 3 to 8 and FIGS. 9 to 19 show two different embodiments of the turnbuckle 1 . What both embodiments have in common is that the support tooth 15 enters a track 17 between two track teeth 11. In addition, further measures illustrated in FIGS. 3 to 8 and 9 to 19 can be added, which are explained in more detail below.
- the exemplary embodiment according to FIGS. 2 to 4 also differs from the exemplary embodiment according to FIGS. 5 to 8 in that the arcuate course of the track teeth 11 is different (from left to right or from right to left—viewed in the image plane). However, this has no influence on the basic function. Therefore, this difference will not be discussed in more detail below.
- the arcuate shape of the carrier tooth 15 and/or the arcuate shape of the track teeth 11 is preferably an involute at least in sections, in the exemplary embodiment completely.
- the arcuate shape of the carrier tooth 15 and the arcuate shape of the tracking teeth 11 have a curvature at each point such that an involute results.
- the arcuate profile of the support tooth 15 is an involute relative to the axis of rotation 16 about which the support tooth 15 rotates.
- the second clamping device 7 has a turntable 18 .
- the support tooth 15 is formed on a main surface 18a of the turntable 18, which is the underside of the turntable 18 in the exemplary embodiment.
- the axis of rotation 16, about which the support tooth 15 can be rotated, is the axis of rotation of the turntable 18 in the exemplary embodiment Screwing movement is screwed into a track 17 between two track teeth 11.
- the turntable 18 is arranged in the width direction of the traverse 8 in such a way that the axis of rotation 16 of the turntable 18 is located centrally between the longitudinal edges 12 , 13 of the traverse 8 and runs orthogonally to an upper side of the traverse 8 .
- the second clamping device 7 has a stop 19 which limits the screwing-in movement of the supporting tooth 15.
- the stop 19 is designed as a stop pin in the exemplary embodiment.
- the turntable 18 is rotatably accommodated in a housing part 20 of the second clamping device 7 .
- the housing part 20 is immovably or rigidly or fixedly connected to the second clamping jaw 14 .
- the housing part 20 has a recess 21 in the shape of a circular arc, within which the stop pin 19 can be moved.
- the stop pin 19 and the recess 21 thus serve as a rotation angle indicator.
- the housing part 20 can be provided with a designation so that it can be seen in which position the supporting tooth 15, whose position is indicated by the stop pin 19, is located.
- the housing part 20 can preferably bear the designation or “+”.
- the arcuate recess 21 can preferably extend over an angular range of 10 to 180 degrees, in particular 50 to 150 degrees.
- the exemplary embodiment shows that the circular recess 21 extends over an angular range of 120 to 160 degrees. The circular recess 21 thus limits the movement of the carrier tooth 15 to a corresponding angular range.
- the arcuate recess 21 is formed in the housing part 20 in such a way that the position of the stop pin 19 within the arcuate recess 21 is visible to the operator when operating the turntable 18 .
- the arcuate recess 21 is thus preferably formed on the upper side of the housing part 20 facing away from the rotary disk 18 .
- the axis of rotation 16 of the turntable 20 has an input member 22 to which a tool can be attached in order to turn the turntable 18 .
- the input member 22 can be formed, for example, as a sleeve or stub pipe. In the exemplary embodiment it is provided that the input member 22 has a profile which can be operated by means of a polygonal drive, in the exemplary embodiment a hexagonal drive.
- the input member 22 can also be designed in such a way that it can be operated using a hammer tip or an anchor rod, in particular a dywidag rod.
- the input member 22 can have a correspondingly suitable bore, for example.
- the second clamping device 7 is captively connected to the traverse 8 of the first clamping device 6 .
- the exemplary embodiment provides that the traverse 8 has corresponding formations 23 or, in general, limiting stops, which can also be pins or edges that interact with corresponding complementary elements on the second clamping device 7 in such a way that the second clamping device 7 the traverse 8 cannot be removed. Securing against loss in the bracing direction can preferably result from the fact that the first clamping jaw 9 and the second clamping jaw 14 collide with one another, that is to say stand in the way of one another in the bracing direction.
- the arcuate course of the supporting tooth 15 is selected in such a way that the supporting tooth 15 can be rotated into a release position in which the supporting tooth 15 does not impede movement of the second clamping device 7 in or against the clamping direction .
- This enables quick setting to be implemented.
- a release position of the support tooth 15 is shown in FIGS. 2, 7, 9, 10 and 15 to 18. In the figures, this is also symbolized in part by the fact that the stop pin 19 is rotated up to the end of the arcuate recess 21 marked with .
- the arcuate course of the track teeth 11 is selected in such a way that the track teeth 11 enable stepless adjustment.
- the track teeth 11 are designed or arranged in such a way that the end of a track tooth 11 corresponds to the start of an adjacent track tooth 11 .
- the second clamping device 7 has a curved secondary support tooth 24.
- the secondary support tooth 24 can be screwed into one of the tracks 17 between two track teeth 11 and engaged with one of the track teeth 11 by the turning movement.
- the secondary support tooth 24 preferably engages a track tooth 11 which is adjacent to the track tooth 11 on which the support tooth 15 engages.
- the support tooth 15 dem Secondary support tooth 24 is arranged leading in the screwing direction.
- a reverse arrangement can also be selected here.
- the supporting tooth 15 and the secondary supporting tooth 24 are each designed as an involute.
- Figures 2 to 8 also serve as a disclosure for a variant of the turnbuckle 1, in which only one support tooth 15 and no secondary support tooth 24 is provided.
- the support tooth 15 can be provided both by the support tooth 15 and by the secondary support tooth 24 according to FIGS.
- Figures 9 to 19 show another variant of the turnbuckle 1. It is provided here that the second clamping device 7 has a catch tooth 25 which can be screwed in together with the support tooth 15 . The catch tooth 25 runs ahead of the support tooth 15 in the screwing-in direction, so that the catch tooth 25 first moves into one of the tracks 17 between two track teeth 11 .
- the offset between two adjacent track teeth 11 and the offset between the catch tooth 25 and the support tooth 15 is formed in the bracing direction such that when the catch tooth 25 enters a track 17 between two track teeth 11, the support tooth 15 without colliding with an end face one of the track teeth 11 moves into a further track 17 that is offset in the bracing direction between two track teeth 11 .
- the catch tooth 25 has a length which is less than 50%, preferably less than 40%, more preferably less than 30%, even more preferably less than 20%, in particular less than 10%. , the length of the curved course of the supporting tooth 15.
- Figures 9 and 10 show a representation of the turnbuckle 1, in which the support tooth 15 is in a release position, which means that the second clamping device 7 along the Guide section or along the longitudinal axis of the traverse 8, within the limits that are predetermined by the captive, is movable.
- Figures 11 and 12 show an illustration of the turnbuckle 1, in which the support tooth 15 has entered a section in a track 17 between two track teeth 11. It is provided that the catch tooth 25 enters a track 17 first. The catch tooth 25 is not in engagement with one of the track teeth 11, while the support tooth 15 is in engagement with one of the track teeth 11.
- Figures 13 and 14 show an illustration of the turnbuckle 1, in which the support tooth 15 is in the opposite end position from the release position, that is, the support tooth 15 is completely screwed into the track 17. If it turns out that the force with which the frame formwork elements 2 are clamped in the end position is not sufficient, the support tooth 15 is turned out of the track 17 again, the clamping device is then moved further in the direction of the clamping direction in the release position, so that the support tooth 15 can be screwed again into an adjacent track 17 that is further ahead in the bracing direction, which then results in a correspondingly higher bracing force.
- a span of a distance between the first clamping jaw 6 and the second clamping jaw 7 is 0 mm to 400 mm, preferably 0 mm to 300 mm, particularly preferably 0 mm to 250 mm.
- the turntable 18 is designed as an eccentric disk or the turntable 18 has an eccentrically arranged axis of rotation 16 such that when the support tooth 15 is turned into a track 17 between two track teeth 11 by a turning movement and in is brought into engagement with one of the track teeth 11, a further screwing-in movement of the support tooth 15 causes the support tooth 15 to apply a force to the track tooth 11, with which it is engaged, which is suitable for the second clamping device 7 in the bracing direction to press.
- FIGS. 18 and 19 show further details, in particular advantageous dimensions, for the catch tooth 25, the support tooth 15 and the tracking teeth 11.
- the details and in particular the dimensions can be advantageous for all the exemplary embodiments and variants shown in FIGS. 2 to 17 or the ones described above. It can be provided in particular that the secondary support tooth 24 is designed in such a way as is shown below with regard to the support tooth 15 .
- the fang 25 shown in FIG. 19 preferably has a maximum thickness of 3.5 mm to 5 mm, preferably 3.8 mm to 4.8 mm, in particular 4.3 mm, possibly +/- 0.2 mm.
- the distance between the beginning and the end of the fang 25, ie the two tips, is preferably 6 mm to 15 mm, more preferably 8 mm to 12 mm, in particular 9.6 mm, possibly +/- 0.4 mm.
- the distance between the beginning and the end of the fang 25 is measured like this is shown below with respect to the measurement of the distance L between the beginning and the end of one of the tracking teeth 11.
- the support tooth 15 (see FIG. 18) preferably has a maximum thickness T of 4 mm to 7 mm, preferably 4 mm to 6 mm, in particular 5 mm, possibly +/- 0.2 mm.
- the distance between the beginning and the end of the support tooth 15, i.e. the two tips, is preferably 50 mm to 80 mm, more preferably 60 mm to 75 mm, in particular 68.9 mm, if necessary +/- 2 mm.
- the distance between the beginning and the end of the support tooth 15 is measured in the manner described below with respect to the measurement of the distance L between the beginning and the end of one of the tracking teeth 11.
- the majority of the track teeth 11, particularly preferably all track teeth 11, have a thickness that changes over the length of the track teeth 11.
- the majority of the track teeth 11, particularly preferably all track teeth 11, have a maximum thickness S1, S2 in the range of 3.5 mm to 7 mm, preferably 4 mm to 6 mm, in particular 4.6 to 5 mm.
- the thickness S1 of the tracking teeth 11 is 4 mm to 5 mm, in particular 4.6 mm, if necessary +/- 2 mm, in a first, more strongly curved section.
- the thickness S2 of the tracking teeth 11 is 0.2 mm to 1 mm, in particular 0.4 mm, more in a second, less strongly curved section than in the first, more strongly curved section.
- S1 is 4.6 mm, possibly +/- 0.2 mm
- S2 is 5 mm, possibly +/- 0.2 mm.
- the distance between the beginning and the end of one of the tracking teeth, i.e. its two tips, is preferably 15 mm to 40 mm, more preferably 20 mm to 30 mm, in particular 24 mm, possibly +/- 2 mm.
- the distance is shown in Figure 19 with the reference character L. Furthermore, FIG. 19 clarifies how the distance is to be measured.
- the turnbuckle 1 can be operated in a particularly advantageous manner. Furthermore, the turnbuckle 1 can be produced in a particularly simple manner with a rotation axis 16 arranged in this way;
- the first longitudinal edge of the traverse 8 and the second longitudinal edge of the traverse 8 delimit the traverse 8 in the width direction (transverse to the longitudinal axis).
- the upper side of the traverse 8 is formed between the first longitudinal edge of the traverse 8 and the second longitudinal edge of the traverse 8 .
- the upper side of the traverse 8 is the surface or side of the traverse 8 that faces away from an underside of the traverse 8, which serves to rest against the panel formwork elements 2 to be braced.
- the traverse 8 is preferably a tube, in particular a rolled tube, with the track teeth 11 being formed on the upper side, preferably by profiling the tube.
- the underside of the traverse 8 facing away from the upper side preferably serves to rest against the frame formwork elements 2 to be braced.
- the traverse 8 preferably also has two side surfaces which extend orthogonally to the upper side and which preferably run plane-parallel to one another in order to encircle the upper side of the traverse 8 to be connected to the underside of the traverse 8.
- the upper side, the lower side and the two side surfaces preferably form a rectangle when viewed in cross-section of the traverse 8 .
- the supporting tooth 15 is formed on a main surface 18a of the rotary disk 16, which is a lower side of the rotary disk 18, i. H. the traverse 8 faces.
- the underside of the turntable 18 or the main surface 18a runs plane-parallel to the top of the traverse 8.
- the screwing-in movement of the supporting tooth 15 runs in a plane which runs plane-parallel to the upper side or the surface of the traverse 8 .
- the first clamping jaw 9 and the second clamping jaw 14 protrude with their clamping surfaces over the underside of the traverse 8 also. It can be provided that the first jaw 9 and / or the second jaw 14, preferably at each end, claws 9a and 14a, preferably two claws 9a and 14a, preferably such that two to be clamped together Frame formwork elements 2 between the underside of the traverse 8 and the clamping jaws 9, 14 are preferably clamped together between the clamping surfaces and in particular the claws 9a, 14a.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020133600.4A DE102020133600A1 (de) | 2020-12-15 | 2020-12-15 | Spannschloss zum Verspannen von Rahmenschalungselementen |
PCT/EP2021/085235 WO2022128799A1 (de) | 2020-12-15 | 2021-12-10 | Spannschloss zum verspannen von rahmenschalungselementen |
Publications (1)
Publication Number | Publication Date |
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EP4263976A1 true EP4263976A1 (de) | 2023-10-25 |
Family
ID=79283127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP21839357.7A Pending EP4263976A1 (de) | 2020-12-15 | 2021-12-10 | Spannschloss zum verspannen von rahmenschalungselementen |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP4263976A1 (de) |
AU (1) | AU2021399778A1 (de) |
CA (1) | CA3204284A1 (de) |
DE (1) | DE102020133600A1 (de) |
WO (1) | WO2022128799A1 (de) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8535906U1 (de) | 1985-12-20 | 1991-03-28 | Peri-Werk Artur Schwoerer Gmbh & Co Kg, 7912 Weissenhorn, De | |
DE3941937A1 (de) | 1989-12-19 | 1991-06-27 | Oesterr Doka Schalung | Spannschloss zum verbinden von rahmen-schalungselementen |
GB2275315B (en) | 1993-02-18 | 1996-09-11 | Bramley Alexander Smith | A self-adjusting support or restraint |
DE10028556C1 (de) | 2000-06-09 | 2001-09-27 | Meyer Keller Noe Schalttech | Spannzwinge zur Verbindung von zwei aneinandergrenzenden Schalungselementen einer Betonschalung |
DE10331359B4 (de) | 2003-07-11 | 2010-07-15 | Peri Gmbh | Spannschlossvorrichtung mit schräg geführtem Keil |
JP5704778B1 (ja) | 2014-08-21 | 2015-04-22 | Rtb株式会社 | コンクリート型枠作業用工具 |
-
2020
- 2020-12-15 DE DE102020133600.4A patent/DE102020133600A1/de active Pending
-
2021
- 2021-12-10 CA CA3204284A patent/CA3204284A1/en active Pending
- 2021-12-10 AU AU2021399778A patent/AU2021399778A1/en active Pending
- 2021-12-10 EP EP21839357.7A patent/EP4263976A1/de active Pending
- 2021-12-10 WO PCT/EP2021/085235 patent/WO2022128799A1/de unknown
Also Published As
Publication number | Publication date |
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CA3204284A1 (en) | 2022-06-23 |
WO2022128799A1 (de) | 2022-06-23 |
DE102020133600A1 (de) | 2022-06-15 |
AU2021399778A1 (en) | 2023-06-29 |
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