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
  • 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

Definitions

• the subject matter of the invention is a positioning and anchoring plate for a threaded sleeve or a spacer tube according to the preamble of patent claim 1.
• the threaded sleeve is a threaded sleeve for anchoring structural elements in a concrete structure.
• the spacer tube is a spacer tube for extending the base body of a threaded sleeve.
• Threaded sleeves of the type mentioned are cast into concrete during the construction of concrete structures in order to be able to fasten structural elements such as consoles, scaffolding, protective railings, hoists or formwork to the structure after the construction of the structure, such as a wall, a ceiling or a floor or an element (e.g. a staircase), or to be able to lift these structural elements using tension rods on which helical or spaced threads are arranged or using eyebolts.
• Such a threaded sleeve comprises a tubular base body, in the center of which is a threaded hole, into which threaded bolts, such as tension rods, can be screwed from one side.
• a cover plate is provided on the closed end opposite the open end.
• This cover plate which, on the one hand, closes the threaded bore and which projects radially beyond the periphery of the base body.
• This cover plate which also serves as an anchor element, can be designed as a circular disk or consist of disk sections in the area radially outside the periphery of the base body. From these disk sections or the periphery of the disk, several, for example three, webs run along the outer shell.
• the webs are conical in the area between the cover plate and the outer surface of the base body, then the edges of the webs run parallel to the axis.
• the base body is stepped, i.e. at the open end of the base body, its wall thickness is less than in the middle and in the area of the cover plate.
• Such threaded sleeves are used millions of times and can absorb loads of up to several tons, i.e. tensile forces that act axially outwards.
• the fastening of the familiar threaded sleeves is achieved by means of peg-shaped elements with a conical base, which are attached to the formwork of the concrete structure with a nail.
• the concrete sleeves to be fastened are pushed onto the conical part of the peg after the nail has been driven in.
• the peg therefore serves both as a holding element for the threaded sleeve and as a seal. the open side of the threaded hole, thus preventing cement water from penetrating the threaded hole.
• the tenon is removed from the threaded sleeve along with the formwork wall during formwork removal.
• the threaded sleeve is therefore always located in a superficial area of the structure.
• the extraction forces that can be extracted from the threaded sleeve are therefore limited solely by the threaded sleeve's position close to the surface of the structure, for example, to approximately 2800 kg.
• significantly more expensive and longer threaded sleeves made of other materials, such as steel are required.
• Another alternative to the relatively short plastic threaded sleeves are threaded sleeves with a longer thread section. However, this means that screwing in the tie rods is more time-consuming and consequently incurs additional (labor) costs.
• Longer threaded sleeves can be torn off the formwork by the liquid concrete when backfilling the formwork due to the large lever.
• New buildings inevitably require better insulation, which often results in insulating panels being installed on the exterior of concrete walls. These panels are inherently porous or less resilient, and therefore significantly less strong than the concrete wall. If the insulating panels are attached to the formwork panels during the construction of the wall, the threaded sleeves previously used, which are directly connected to the surface of the building, cannot simply be inserted into the insulating or lightweight panels; instead, they must be connected to the back of the concrete structure.
• the existing threaded sleeves could be provided with a longer base body.
• the threaded sleeves could have a length of 100 mm, 150 mm, or more.
• the fastening of such "long" threaded sleeves is difficult because of the high forces generated by the liquid concrete flowing in during concreting. Concrete or during insulation installation, forces acting transversely to the longitudinal axis can affect the threaded sleeves and tear them loose from the formwork. This results in no threaded sleeve at the desired location.
• An object of the present invention is to provide a threaded sleeve which can be used in a conventional manner and which can be adapted to the respective conditions on the construction site depending on the requirement of the extraction force to be ensured and the design of the concrete structure.
• a further object of the invention is to enable a threaded sleeve that can be used on both wooden and steel formwork.
• a further object of the invention is to enable a threaded sleeve that can absorb significantly greater pull-out forces by being arranged deeper in the structure and consequently being able to be positioned at a correspondingly suitable position in the structure.
• the positioning and anchoring plate With the positioning and anchoring plate according to the invention, it is possible to position and anchor the threaded sleeve in the concrete mass at different distances and angles to the surface of the structure using one and the same design.
• By attaching a spacer tube it is possible to arrange the threaded sleeve behind an insulation layer and/or to move it further into the interior of the structure in order to achieve a much higher pull-out force.
• any arrangement can be carried out with one and the same threaded sleeve without special stockkeeping.
• the connection between the short standard threaded sleeve and a spacer tube is made by simply plugging it on or by locking it into notches or by turning it in a thread.
• the attached spacer tube can further increase the pull-out force if the spacer tube also has threads.
• the spacer tube can be provided with predetermined breaking points so that the spacer tube can be either cut or sawn off and thus shortened at the desired point.
• a spacer tube protruding above a surface of a building, for example a floor slab, can be or curing of the structure without the need for cutting tools.
• a positioning or anchor plate can either be attached directly to the threaded sleeve or attached anywhere on the spacer tube.
• the positioning or anchor plate allows the threaded sleeve to be attached to the reinforcing bars with or without the spacer tube at any location within the structure, thereby further increasing the pull-out force.
• the threaded sleeve and/or the positioning or anchor plate can be made of plastic, fiber-reinforced plastic, metal, or other materials.
• the pull-out force can be further increased by the positioning or anchor plate because the pull-out cone is enlarged many times over and, when connected to reinforcing iron, can become even larger.
• Threaded sleeves can be positioned essentially anywhere using the positioning or anchor plate, and the threaded sleeve can be inserted perpendicular to the surface of the structure or at any other acute angle.
• Anchor plate installation is simple and involves attaching the positioning or anchor plate to the reinforcement elements with iron ties.
• the threaded sleeve is held securely and accurately in position by the positioning or anchor plate.
• the positioning or anchor plate offers the option of attaching the threaded sleeves to the reinforcement with iron ties, allowing for accurate positioning even on structures with steel formwork, without the need for an expensive and complex magnetic cone.
• the cover plate 11 can be designed as a circular disk (not shown) or, in the area outside the periphery of the lower section 3c, consist of circular ring sections. The cover plate 11 closes the lower end of the threaded bore 5.
• the base body 3 comprises the three cylinder sections 3a, 3b, and 3c. Of course, only one, two, or more than three cylinder sections could be present. Alternatively, the base body 3 can also have a surface area corresponding to the surface area of a truncated pyramid, truncated circular cone, or cylinder.
• notches 13 are recessed at intervals on the webs 9.
• the notches 13 can have a rectangular or V-shaped cross-section. With a rectangular cross-section, these have an axial height h.
• the flanks of the notches 13 can be parallel to one another and at a right angle to the axis A of the threaded sleeve 1 or, alternatively, can be arranged at an acute angle to the axis A.
• the flanks of the notches 13 are preferably not flat, but cambered or run at an acute angle to the axis A, so that the height h is smallest in the middle of the notches 13.
• the threaded sleeve 1 is preferably made of plastic, which can be additionally reinforced with fibers.
• the threaded sleeve 1 can also be manufactured as a metal injection-molded part, a metal deep-drawn or ironed part, or another material. A combination of plastic and metal is also possible.
• the spacer tube 15 comprises a centrally arranged cylindrical tubular body 17, the bore 19 of which has a diameter corresponding to the diameter of the threaded bore 5 in the threaded sleeve 1.
• webs 9a are formed on the outer surface of the tubular body 17, and incisions 13a are formed on the webs 9a.
• the webs 9 and incisions 13 correspond to the webs 9 and 13 on the threaded sleeve 1. They are therefore distributed in the same way over the outer surface of the tubular body 17.
• the lower end of the spacer tube 15 is designed as a short tubular cylinder 21, the outer diameter of which is larger than the outer diameter of the tubular body 17 and the inner diameter of which corresponds to the outer diameter of the section 3c on the base body 3.
• the jacket of the base body 3 can have a larger diameter on the threaded sleeve 1 in the area of the opening, such that in this An internal thread is provided in this area for screwing in the spacer tube 15.
• the internal thread on the threaded sleeve 1 and on the spacer tube 15 are not shown.
• the corresponding design of an internal thread on the spacer tube 15, if one is provided, is also not shown.
• the spacer tube 15 is pushed axially onto the threaded sleeve 1, whereby the hooks 23 must be located between the webs 9 during placement, the spacer tube 15 or the threaded sleeve 1 can then be rotated clockwise, whereby the hooks 23 engage and hook or lock into the notches 13 on the webs 9 of the base body 1, thus achieving a rigid, tight, and tensile-resistant connection between the two elements.
• each spacer tube 1 can not only be placed on the threaded sleeve 1, but the spacer tube 15 can also be arranged on a first spacer tube 1 already placed on a threaded sleeve 1 for further extension.
• each spacer tube 1 is provided at its upper end, i.e., opposite the tubular cylinder 21, with an axially extending opening 27 of the webs 9, as is also the case with the threaded sleeve 1.
• rows of knobs or projections arranged in the axial direction can be formed on the casing of the threaded sleeve 1 and on the spacer tube 15, between which the incisions 13 then arise (not shown). Accordingly, after the spacer tube 15 is placed on a threaded sleeve 1 or on a spacer tube 15 already placed on the threaded sleeve 1, the hooks 23 engage between the knobs or projections, thus forming a firm connection between the threaded sleeve 1 and the spacer tube 15.
• Other elements can also be positively attached to the knobs, projections, or incisions.
• rows of oblique teeth can be formed which, when a spacer tube 15 is attached, hook onto it and create an undetachable connection.
• FIG. 6 A conventional closure pin 29 is shown, which is inserted into the upper end of the threaded sleeve 1 or, if a spacer tube 15 is mounted on the sleeve, into the upper end of the mounted spacer tube 15.
• the threaded sleeve 1, with or without the spacer tube 15 can be fastened to a formwork wall before the structure is concreted, in a conventional manner, and the threaded hole can be protected against the penetration of concrete water.
• the Figures 7 to 10 show a positioning or anchor plate 31, which can be placed directly onto a threaded sleeve 1 and/or onto a spacer tube 15, which is fastened to the threaded sleeve 1, at a predeterminable distance from the cover plate 11.
• the positioning and anchor plate 31 comprises a recess 33, which is preferably arranged in the center of the positioning and anchor plate 31.
• the recess 33 which forms a socket 34
• circular ring sections 35 are formed, the ends of which are spaced apart by a distance X.
• the distance X corresponds to the thickness s of the webs 9 or 9a or the bosses or knobs.
• the axial extent of the circular ring sections 35 corresponds to the axial extent h of the incisions 13.
• the number of circular ring sections 35 corresponds to the number of webs 9, 9a or the number of rows of knobs. Together, these form a type of bayonet closure.
• the pull-out force i.e., the load-bearing capacity of the threaded sleeve 1 and the pull-out cone on the structure, is significantly increased, preventing it from breaking out of the structure's surface under high loads.
• Attaching the threaded sleeve 1 to the reinforcing iron also ensures that during concreting, i.e., when pouring the liquid concrete, the threaded sleeve 1 does not become detached from the formwork and thus displaced or even torn unusably into the interior of the structure.
• threaded sleeves 1 can be securely arranged even when using steel formwork without the need for expensive and complex cones.
• a continuous thread or a thread consisting of a plurality of threaded sections can be arranged on the casing of the tubular body 17 of threaded sleeve 1 and on spacer tube 15, onto which thread the positioning and anchoring plate 31, in whose socket 34 a thread is arranged, can be screwed and can be axially positioned in this way (no illustrations).
• the threaded sleeve 1 can be a threaded sleeve 1 for anchoring structural elements such as formwork, brackets, scaffolding, protective railings and lifting tools in a concrete structure with the aid of a tension rod or a screw formed with a thread, wherein the threaded sleeve 1 comprises a tubular base body 3 with a cylindrical threaded bore 5 and a cover plate 11 closing the threaded bore 5 on one side, wherein means for non-positively or positively placing and connecting a spacer tube 15 with a central cylindrical bore 19 and/or a positioning and anchoring plate 31 are formed on the base body 3.
• incisions 13 can be recessed at intervals or incisions 13 can be formed between the knobs or bosses by intervals, in which, after the spacer tube 15 has been pushed onto the base body 3 and after rotation of the spacer tube 15, tangentially aligned hooks 23 are formed at the lower end of the spacer tube 15, which engage in the incisions 13 on the base body 3 and can be latched there.
• An internal thread can be formed on the lower end of the spacer tube 15, which is intended to mesh with the external thread on the threaded sleeve 1.
• the incisions 13 can have conical or cambered edge areas or the knobs and humps can have conical flanks and the hooks 23 on the spacer tube 15 can have conical side surfaces and engage essentially without play in the notches 13 on the base body 3.
• the spacer tube 15 comprises a plurality of fully or partially circumferential predetermined breaking grooves 25, which are arranged in the region of the incisions 13 or between the knobs or bumps.
• One or more threads or thread sections can be formed in the bore 19 in the spacer tube 15.
• the positioning and anchoring plate according to the invention is a positioning and anchoring plate for placing and fastening on the tubular section of the base body 3 of a threaded sleeve 1 or a spacer tube 15, with a grid body 37 with a central recess 33 for passing through the cylindrical section of the threaded sleeve 1 or the spacer tube 15, wherein means for positively or non-positively fastening the grid body 37 to the cylindrical section are formed in the recess 33.
• the means comprise a circumferential socket 34 which is formed in the recess 33 and is formed from a plurality of spaced-apart tangentially spaced circular ring sections 35 arranged on the circumference of the recess 33.
• flanks of the circular ring sections 35 have inclined inlet areas in the axial and radial directions.
• the spaced circular ring sections 35 are intended to lie between axially extending webs 9 on the threaded sleeve 1 during sliding on.
• the axial length of the circular ring sections 35 corresponds to the axial length of the incisions 13 in the webs 9.
• the threaded sleeve 1 or the spacer tube 15 after sliding on and by rotating about the axis of symmetry A of the threaded sleeve 1 or the spacer tube 15, it can be locked to the threaded sleeve 1 or the spacer tube 15 by means of barbs formed on the circular ring sections 35.
• an internal thread with one thread turn or with several thread turn sections is formed in the recess 33.
• Means for positioning and fastening a positioning and anchor plate 31 can be formed on the casing of the tubular body 17.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Mechanical Engineering (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Joining Of Building Structures In Genera (AREA)
• Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)

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• 2016
  • 2016-01-11 CH CH00033/16A patent/CH712025A2/de unknown
  • 2016-12-01 EP EP16201695.0A patent/EP3190244B1/fr active Active
  • 2016-12-01 EP EP25192244.9A patent/EP4613954A3/fr active Pending

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