Preform connector and connection system

Abstract

The utility model relates to a preform connector (3) for connecting a first concrete preform (1) to a second concrete preform (2), comprising a base plate (4) and at least one casting anchor (5) connected to the base plate (4) for casting in the first concrete preform (1). The base plate (4) has an insertion opening (6) for a connecting element (7). The insertion opening (6) has a cross-sectional shape different from the circular shape. A connection system for connecting a first concrete preform (1) to a second concrete preform (2) comprises such a preform connector (3).

Description

Technical Field

[0001] The utility model relates to a prefabricated part connector for connecting a first prefabricated concrete part with a second prefabricated concrete part and a connection system with the prefabricated part connector. Background Art

[0002] A precast part connector and a connecting system for connecting precast concrete parts are known from EP 3 214 234 A1. Utility Model Content

[0003] The object of the present invention is to provide a precast part connector which simplifies the connection of precast concrete parts. Another object of the present invention is to provide a connection system for connecting precast concrete parts, in which assembly is simplified.

[0004] With regard to the precast part connector, the object is achieved by a precast part connector for connecting a first precast concrete part to a second precast concrete part, the precast part connector comprising a base plate and at least one cast-in anchor connected to the base plate for casting in the first precast concrete part, wherein the base plate has a through-opening for the connecting element and wherein the through-opening has a cross-sectional shape that deviates from a circular shape.

[0005] With regard to the connection system, the object is achieved by a connection system for connecting a first precast concrete part to a second precast concrete part, the connection system having a precast part connector, the precast part connector comprising a base plate and at least one cast-in anchor connected to the base plate for casting in the first precast concrete part, wherein the base plate has a through-opening for the connection element, and wherein the through-opening has a cross-sectional shape that deviates from a circular shape.

[0006] Since the through-opening has a cross-sectional shape that deviates from a circular shape, it is possible to compensate for different large deviations of the precast part connector in the installation position relative to the receptacle for the connecting element arranged in the other precast concrete part in different directions. Since less exact position tolerances must be observed, the installation of the precast part connector in the formwork for the precast concrete part is simplified. Since it is possible to compensate for larger position tolerances between the receptacle for the connecting element and the precast part connector, a simplified connection of the precast concrete parts is obtained at the construction site.

[0007] In particular, the through-opening comprises a region which has a rectangular shape and whose length is at least 80% of the length of the through-opening and whose width is at least 80% of the width of the through-opening. Thus, in this region, it is possible to compensate for position tolerances between the precast part connector and the receptacle for the connecting element arranged in the further precast concrete part both in the direction of the length of the through-opening and in the direction of the width of the through-opening over a large part of the total width and the total length of the through-opening.

[0008] In particular, the through-opening has two longitudinal sides arranged opposite to each other and two transverse sides arranged opposite to each other. In particular, the two longitudinal sides extend parallel to each other over at least 60% of the length of the through-opening. In particular, the two transverse sides extend parallel to each other over at least 60% of the width of the through-opening. In particular, the through-opening is designed as a rectangle with rounded corners.

[0009] In particular, the through openings extend over a majority of the substrate. The length of the through openings is in particular at least 60% of the length of the substrate measured in the same direction. The width of the through openings is in particular at least 60% of the width of the substrate measured in the same direction.

[0010] A simple design is obtained if the base plate and the at least one cast-in anchor are designed as a one-piece bent sheet metal part. In particular, the base plate is located in a base plane and the at least one cast-in anchor is bent at an angle relative to the base plate from the base plane. A particularly advantageous design is obtained if the angle is 45° to 80°, in particular 55° to 65°.

[0011] In particular, the base plate has two opposite edges, wherein at least one cast-in anchor element adjoins each of the two opposite edges.

[0012] In particular, the length of the substrate and the length of the through opening are measured from one edge to another edge and perpendicular to the edges. In particular, the width of the substrate and the width of the through opening can be measured parallel to at least one edge, in particular parallel to two edges.

[0013] An advantageous symmetrical introduction of force can be achieved if the preform connector has a plane of symmetry and the at least two cast-in anchors are arranged mirror-symmetrically with respect to the plane of symmetry.

[0014] For good anchoring of the cast anchor in the surrounding concrete and a material-saving design, it is particularly provided that at least one cast anchor is designed as a frame element with an opening. In particular, the cast anchor is designed to be closed around the opening.

[0015] In particular, the connection system has at least one latching plate with an opening for the connecting element. In the installed state, it is particularly provided that the latching plate abuts against the base plate of the preformed connector and the connecting element protrudes through the base plate of the preformed connector and the latching plate.

[0016] In particular, the latching plate is provided with a latching toothing on at least one of its flat sides. In particular, the base plate has at least one latching toothing corresponding to the latching toothing of the latching plate. In the mounted state, it is in particular provided that the latching teeth of the latching plate and the base plate engage with each other. In this way, the latching plate and the base plate can be prevented from shifting relative to each other transversely to the longitudinal direction of the latching teeth in a simple manner. A secure, positive connection transversely to the latching teeth is obtained.

[0017] In particular, the opening of the latching plate for the connecting element is designed as an elongated hole. In particular, the longitudinal direction of the elongated hole extends in the longitudinal direction of the teeth of the latching toothing of the latching plate. In order to adapt the position of the connecting element transversely to the longitudinal direction of the teeth of the latching toothing, it is necessary to at least partially loosen the connecting element and move the latching teeth transversely to each other. In order to adapt the position of the connecting element in the longitudinal direction of the elongated hole, the latching plate and the base plate can remain latched to each other and the connecting element can be moved in the elongated hole parallel to the longitudinal direction of the teeth of the latching toothing. As a result, a very strong connection and good positioning of the connecting element are achieved transversely to the longitudinal direction of the teeth of the latching toothing, and position tolerances between the precast concrete parts to be connected can be compensated in a simple manner in the longitudinal direction of the teeth of the latching toothing. The longitudinal direction of the latching toothing is in particular transverse to the orientation of the maximum forces to be transmitted between the precast concrete parts.

[0018] In particular, a disk for receiving the head of the connecting element is arranged on the latching plate, wherein the disk has a non-circular cross section. This makes it possible to provide a sufficiently large receiving surface for the head of the connecting element and at the same time to bring the disk close to adjacent components, for example to the edge of a recess in a precast concrete part or to a cast anchor of a precast part connector. This makes it possible, in particular, to compensate for relatively large positional tolerances between the precast part connector in the first precast concrete part and the receptacle for the connecting element in the second precast concrete part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following is an explanation of the embodiments of the present invention based on the accompanying drawings.

[0020] Figure 1 A schematic diagram showing two precast concrete parts connected to each other via a connection system,

[0021] Figure 2 and Figure 3 shows a perspective view of an embodiment of components of a connection system,

[0022] Figure 4 shows a perspective view of a preform connector,

[0023] Figure 5 Shows Figure 4 Side view of the preform connector in

[0024] Figure 6 Shows Figure 4 The prefabricated connectors in Figure 5 A side view in the direction of arrow VI,

[0025] Figure 7 Shows Figure 4 The prefabricated connectors in Figure 5 A side view in the direction of arrow VII,

[0026] Figure 8 shows a side view of the disc,

[0027] Fig. 9 Shows Figure 8 The disk in Figure 8 A top view in the direction of arrow IX,

[0028] Fig.10 A side view of the locking plate is shown,

[0029] Fig.11 Shows Fig.10 The card lock plate in Fig.10 A top view in the direction of arrow XI,

[0030] Fig.12 Another embodiment of the disc is shown,

[0031] Fig.13 Shows Fig.12 The disk in Fig.12 A top view in the direction of arrow XIII,

[0032] Fig.14 A side view of an embodiment of a latch plate is shown,

[0033] Fig.15 Shows Fig.14 The lock plate in Fig.14 A top view in the direction of arrow XV,

[0034] Fig.16 shows a perspective exploded view of a recess body for producing a recess in a first prefabricated concrete part,

[0035] Fig.17A perspective view showing the installation of the recess body and the precast element connector into a formwork for manufacturing a first concrete precast element is shown. DETAILED DESCRIPTION

[0036] Figure 1 The schematic diagram shows two precast concrete parts 1 and 2 connected to one another via a connection system 30. A precast connector 3 is partially cast into the first precast concrete part 1. It may be expedient to also cast a precast connector 3 into the second, oppositely disposed precast concrete part 2 in a similar manner to the first precast concrete part 1. In the preferred embodiment shown, however, the connection system 30 comprises only a single precast connector 3, which is cast into the first precast concrete part 1. Alternatively, a receiving element, which is designed here as a receiving sleeve 14, is inserted into the oppositely disposed precast concrete part 2.

[0037] The precast connector 3 comprises a base plate 4 and at least one, in particular as shown in the figure two, cast-in anchors 5 connected to the base plate 4. The precast connector 3 is cast into the concrete material of the first precast concrete part 1 in such a way that its cast-in anchors 5 are completely surrounded by the concrete material and the base plate 4 is surrounded by the concrete material only in sections adjacent to the two cast-in anchors 5. The central section of the base plate 4 is exposed and delimits a recess 15 open toward the flat side of the first precast concrete part 1 in the direction of the adjacent second precast concrete part 2. During assembly, the connecting element 7, which is designed here as a screw with an exemplary hexagonal head 11, is inserted into the recess 15 of the first precast concrete part 1 and is inserted through the base plate 4 of the precast connector 3 from the side of the base plate 4 facing away from the adjacent second precast concrete part 2 with the receiving sleeve 14 inserted therein and screwed into the receiving sleeve 14 of the second precast concrete part 2. The head 11 of the connecting element 7 is accessible via this recess.

[0038] The receiving sleeve 14 can be implemented as a cast sleeve anchor or a screw anchor. However, a pin that is subsequently inserted into a suitable drilled hole is also conceivable as an alternative. In particular, the receiving sleeve 14 has an internal thread for accommodating the external thread of the connecting element 7. However, a self-tapping receiving portion is also conceivable. Instead of the receiving sleeve 14, other receiving elements for the connecting element 7 can be provided. Within the scope of the utility model, it is conceivable, for example, that the connecting element 7 is not implemented as a screw, but as a quick tensioning element, a bayonet element or the like, wherein the mentioned receiving element is adapted to the design of the connecting element 7.

[0039] In order to position the connecting element 7 relative to the base plate 4 and subsequently fix it in a positively locking manner, a latching plate 20 is provided. As soon as the connecting element 7 is tightened on one side by means of a tool introduced into the recess 15, the two prefabricated concrete parts 1, 2 are also fixed in position relative to one another.

[0040] In this embodiment, the connecting element 7 has a head 11. The head 11 rests on a plate 12, which in turn bears against a latching plate 20. In the illustrated assembled state with respect to the plate 12, the head 11 presses the latching plate 20 against the base plate 4. A spacing element 29 is arranged between the two precast concrete parts 1 and 2, through which the connecting element 7 projects. The connecting element 7 clamps the second precast concrete part 2, the spacing element 29, the base plate 4 of the precast part connector 3, the latching plate 20 and the plate 12 against each other in the longitudinal direction of the connecting element 7 and thereby fixes the two precast concrete parts 1 and 2 to each other.

[0041] The cast anchor 5 and the base plate 4 are constructed together as a one-piece sheet metal bent part. Figure 2 In the embodiment of the present invention, the two cast-in anchors 5 each have an opening 8. The cast-in anchor 5 is designed as a closed, surrounding frame. The opening 8 has an approximately rectangular shape with rounded corners in this embodiment.

[0042] like Figure 2 As shown, the base plate 4 has edges 27 and 28 that are opposite to each other, to which cast anchors 5 are respectively connected. Figure 2 As also shown, the disk 12 has a Figure 1 . The cross section of the opening 13 can be adapted to the cross section of the connecting element 7 and in particular is only slightly larger than the cross section of the connecting element 7. The opening 13 is circular in this embodiment.

[0043] The cross section of the penetration opening 6 is significantly larger than the cross section of the connecting element 7. Figure 2 As shown, the through-opening 6 has a cross section that deviates from a circular shape. In this embodiment, the through-opening 6 is approximately rectangular with rounded corners. The through-opening 6 extends over a large area of ​​the base plate 4.

[0044] The through opening 6 has two mutually opposite longitudinal sides 9 and two mutually opposite transverse sides 10. The longitudinal sides 9 extend in a central region perpendicular to the edges 27 and 28 of the base plate 4. The transverse sides 10 extend in a central region parallel to the edges 27 and 28 of the base plate 4.

[0045] The latching plate 20 has an opening 16 for the connecting element 7 . The opening 16 has a cross section that deviates from a circular shape. In this exemplary embodiment, the opening 16 is designed as an elongated hole. The opening 16 has a longitudinal direction 17 .

[0046] In the assembled state, the Figure 2On the flat side visible in the figure, the latching plate 20 is provided with a latching toothing 21. The base plate 4 carries a latching toothing 22 corresponding thereto on its surface facing the latching plate 20. In the illustrated embodiment, the two latching toothings 21, 22 are each formed by parallel teeth 23, 31. The teeth 23 of the latching toothing 21 extend in a longitudinal direction 24. The teeth 31 of the latching toothing 22 of the base plate 4 extend in a longitudinal direction 25. In the assembled state, i.e. when the two prefabricated concrete parts 1 and 2 are connected to one another via the connecting system 30, the longitudinal directions 24 and 25 are oriented parallel to one another.

[0047] The longitudinal direction 17 of the opening 16 runs parallel to the longitudinal directions 24 and 25 of the latching teeth 21 and 22 .

[0048] During assembly, the locking plate 20 is placed on the upper side of the base plate 4 according to the arrow 18 so that the locking teeth 21 and 22 can lie on each other and engage with each other. As long as the connecting element 7 has not yet been tensioned, the functional unit consisting of the connecting element 7, the disk 12 and the locking plate 20 can be positioned relative to the preform connector 3 in a locking manner. However, as soon as the connecting element 7 is tensioned, a form fit is produced at least in the axial direction of the connecting element 7 and in the locking direction 19, while at least one force fit occurs perpendicular to the locking direction 19 due to the clamping force acting. The locking direction 19 is perpendicular to the longitudinal direction 25 of the teeth 31 of the base plate 4 and parallel to the base plane E ( Figure 5 ).

[0049] The longitudinal directions 24 and 25 of the latching teeth 21 and 22 are arranged parallel to the edges 27 and 28 of the base plate 4 in the assembled state. The longitudinal direction 17 of the opening 16 also runs parallel to the edges 27 and 28 of the base plate 4 in the assembled state. In the longitudinal direction 17, the connecting element 7 can be moved in the opening 16 even when the latching teeth 21 and 22 are engaged with each other. This makes it possible to compensate for positional tolerances between the receiving sleeve 14 and the prefabricated part connector 3 in this direction in a simple manner. In the latching direction 19, relatively high forces can be transmitted between the prefabricated concrete parts 1 and 2 via the connecting system 30. In order to move in the latching direction 19, the connecting element 7 must be loosened to such an extent that the latching teeth 21 and 22 can be disengaged.

[0050] Figure 3 The following embodiment is shown, in which the locking teeth 21 and 22 are connected with the locking teeth 21 and 22 according to Figure 2 In all figures, the same reference numerals represent elements that correspond to each other. For elements that are not described in more detail, reference is made to the description of the previous figures.

[0051] In accordance with Figure 3In the embodiment of the invention, the longitudinal directions 24, 25 of the latching teeth 21 and 22 and the longitudinal direction 17 of the opening 16 extend perpendicularly to the edges 27 and 28. Figure 3 In the embodiment of the present invention, the connecting element 7 can be simply formed on the base plane E ( Figure 5 ) in a direction parallel to the longitudinal edges 27 and 28. The latching teeth 21 and 22 engage with one another in a direction parallel to the longitudinal edges 27 and 28. The latching direction 19 is oriented parallel to the longitudinal edges 27 and 28. In this direction, due to the latching teeth 21 and 22 engaging with one another, higher forces can be transmitted between the prefabricated concrete parts 1 and 2.

[0052] In accordance with Figure 3 In the embodiment of the present invention, the openings 8 of the cast anchor 5 each have a protrusion 32. The protrusion 32 is in particular an extension or an enlargement of the opening 8. The protrusion 32 is used to simply visually distinguish Figure 2 and Figure 3 Different types of preform connectors 3 are shown in FIG. Other means for visually distinguishing different types of preform connectors 3 may also be provided. By appropriately selecting the orientation of the latching teeth 21 and 22, the connection system 30 can be adapted to the forces to be transmitted.

[0053] Figures 4 to 7 The preform connector 3 is shown in detail. In this embodiment, the Figure 3 The preform connector 3, wherein the opening 8 for casting the anchor 5 has a protrusion 32. Figure 5 As shown, the base plate 4 has a base plane E. The cast anchor 5 is bent upwards by an angle α or β relative to the base plane E. The angles α, β are in particular 45° to 80°. Particularly advantageously, the angles α, β are approximately 55° to 65°. The angles α and β are in particular the same size. However, different angles α and β may also be advantageous.

[0054] The preform connector 3 has a symmetry plane S. In particular, the preform connector 3 is designed mirror-symmetrically with respect to the symmetry plane S. The cast-in anchor 5 is arranged and designed mirror-symmetrically with respect to the symmetry plane S.

[0055] Figure 6 and Figure 7 The design of the through-opening 6 is shown in detail. The base plate 4 has a length a and a width b. The width b is measured parallel to the edges 27 and 28, in particular at one of the edges 27 or 28. The length a is measured from one edge 27 to the other edge 28, in particular perpendicular to the width b. The through-opening 6 has a length c and a width d measured perpendicular thereto. The width d is measured parallel to the edges 27 and 28. The length c is measured perpendicular to the edges 27 and 28.

[0056] The longitudinal sides 9 extend parallel to one another over the length h of the longitudinal sides 9. In particular, the length h is at least 60% of the length c of the through-opening 9. The transverse sides 10 extend parallel to one another over the width i of the transverse sides 10. In particular, the width i is at least 60% of the width d of the through-opening 6.

[0057] like Figure 7 As shown, the through-opening 6 has an imaginary rectangular area 36. The area 36 has a length f, which is in particular at least 80% of the length c of the through-opening 6. The area 36 has a width g, which is in particular at least 80% of the width d of the through-opening 6.

[0058] Figures 8 to 11 A first embodiment of a disk 12 and an associated locking plate 20 is shown. The diameter k of the opening 13 of the disk 12 corresponds in particular approximately to the width m of the opening 16 of the locking plate 20. The diameter k and the width m are in particular coordinated with the width of the connecting element 7 and are slightly greater than this width. In this embodiment, Figure 8 and Fig. 9 A disk 12 is shown, the diameter k of the opening 13 of which is smaller than Fig.12 and Fig.13 The diameter k of the opening 13 of the disk 12 in FIG. Fig.10 and Fig.11 The locking plate 20 has an opening 16, which has a Fig.10 and Fig.11 The opening 16 shown has a smaller width m. In both exemplary embodiments, the longitudinal direction 17 of the opening 16 runs parallel to the longitudinal direction 24 of the teeth 23 of the latching toothing 21 .

[0059] Fig.16 and Fig.17 A recess body 33 is shown, which can be used to produce the recess 15 when producing the precast concrete part 1. The recess body 33 has a base 34. A compensation plate 35 is fixed to the base 34 by means of screws 37. The compensation plate 35 can be provided to compensate for height differences in different thicknesses. The recess body 33 has a projection 38, the outer contour of which is adapted to the contour of the through-opening 6. The projection 38 is surrounded by a contact surface 39 for the precast part connector 3.

[0060] like Fig.17 As shown, the precast connector 3 can be placed on the protrusion 38. The recess body 33 can be fixed to a template 40 for manufacturing the first precast concrete part 1 with the precast connector 3 arranged thereon. For this purpose, for example, screws can be screwed into the recess body 33 through the template 40. Fig.17 The compensation plate 35 is shown in FIG. Fig.16The height of the compensating plate 35 is advantageously selected such that the recess body 33 projects as far as the flat side of the first prefabricated concrete part 1 to be produced. The recess body 33 forms a recess 15 ( Figure 1 ). Instead of being screwed, the recess body 33 can also be fixed to the template 40 via one or more magnets, in particular when the template is formed from metal.

Claims

1. A precast component connector (3) for connecting a first precast concrete component (1) to a second precast concrete component, the precast component connector comprising a base plate (4) and at least one casting anchor (5) connected to the base plate (4) and cast in the first precast concrete component (1), wherein: The base plate (4) has a through opening (6) for a connecting element (7). The invention is characterized in that the penetration opening (6) has a cross-sectional shape different from a circular shape.

2. The preform connector according to claim 1, It is characterized in that The through-opening (6) comprises an area (36) having a rectangular shape, a length (f) of the area being at least 80% of a length (c) of the through-opening (6), and a width (g) of the area being at least 80% of a width (d) of the through-opening (6).

3. The preform connector according to claim 1, It is characterized in that The insertion opening (6) has two longitudinal sides (9) arranged opposite to each other and two transverse sides (10) arranged opposite to each other, wherein the two longitudinal sides (9) extend parallel to each other over at least 60% of the length (c) of the insertion opening (6), and wherein the two transverse sides (10) extend parallel to each other over at least 60% of the width (d) of the insertion opening (6).

4. The preform connector according to claim 1, It is characterized in that The length (c) of the through-opening (6) is at least 60% of the length (a) of the substrate (4) measured in the same direction, and the width (d) of the through-opening (6) is at least 60% of the width (b) of the substrate (4) measured in the same direction.

5. The preform connector according to claim 1, It is characterized in that The base plate (4) and the at least one cast-in anchor (5) are constructed as a one-piece bent sheet metal part, the base plate (4) being located in a base plane (E), and the at least one cast-in anchor (5) being bent upward from the base plane (E) relative to the base plate (4) at an angle (α, β).

6. The preform connector according to claim 5, It is characterized in that The angle (α, β) is 45° to 80°.

7. The preform connector according to claim 1, It is characterized in that The base plate (4) has two opposite edges (27, 28), and at least one cast-in anchor (5) adjoins each of the two opposite edges (27, 28).

8. The preform connector according to claim 1, It is characterized in that The preform connector (3) has a symmetry plane (S), and at least two cast anchors (5) are arranged in a mirror-symmetrical manner with respect to the symmetry plane (S).

9. The preform connector according to claim 1, It is characterized in that At least one cast-in anchor (5) is designed as a frame element with a first opening (8).

10. A connection system for connecting a first precast concrete part (1) to a second precast concrete part, comprising a precast part connector (3), the precast part connector comprising a base plate (4) and at least one cast-in anchor (5) connected to the base plate (4) for casting in the first precast concrete part (1), wherein: The base plate (4) has a through-opening (6) for a connecting element (7), wherein the through-opening (6) has a cross-sectional shape different from a circular shape.

11. The connection system according to claim 10, It is characterized in that The connection system comprises at least one locking plate (20) having a second opening (16) for the connection element (7).

12. The connection system according to claim 11, It is characterized in that The locking plate (20) is provided with a first locking tooth portion (21) on at least one of its flat sides, and the base plate (4) has at least one second locking tooth portion (22) corresponding to the first locking tooth portion (21) of the locking plate (20).

13. The connection system according to claim 11, It is characterized in that The second opening (16) is designed as an elongated hole.

14. The connection system according to claim 13, It is characterized in that The first longitudinal direction (17) of the elongated hole extends in the second longitudinal direction (24) of the teeth (23) of the first latching tooth system (21) of the latching plate (20).

15. The connection system according to claim 11, It is characterized in that A disk (12) for receiving a head (11) of the connecting element (7) is arranged on the locking plate (20), wherein the disk (12) has a non-circular cross section.

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