EP1375765A2 - Closure for connections in concrete constructions - Google Patents

Abstract

The protective box structures with a hollow box or rail shape, for the connections to join concrete sections together, have a box and a closure (1) to shut off one or both open sides of the box.. The closure has the configuration giving the shape and dimensions to be inserted into the box in a positive fit with a friction lock. The closure has a stopper plate (2) to cover the open end of the box/rail, in one piece with a shaft (3), which fits within the hollow box/rail. The side surfaces (4) of the closing plate are aligned at an inward angle to the shaft, with sealing surfaces (4.1,4.2).

Description

The invention relates to a storage box and a closure element for the protective and supportive reception of the head ends of Connection connections as used in concrete construction.

Such a deposit box for the reception of the Connection connections in concrete construction usually have a box or rail-shaped open on both sides, completed a hollow body forming basic structure.

This is usually a U-rail, the after Inserting the loop or eyelet not to be inserted into the concrete the head portion of the connection terminal element with a Covering lid is closed.

For closing the front sides of such storage boxes are the various means known. It is common, such Face walls, the intrusion spilled liquid To prevent concrete sludge mass in the storage box by means of according to assembled tabs to close with the groove-shaped profile structure of the storage box by screwing, Welding, jamming or latching are connected. Production and assembly of such boxes run in the Way that first the gutter profile is made, this then with provided the end walls, then with the or to protective connecting terminal elements fitted and finally closed with a lid. The lid can be mounted on the trough-shaped profile can be pressed or pushed on and if desired, be secured by additional adhesive tape windings. The sealing connection of the front wall to the underside of the lid remains critical.

From the common state of the art is still known at Use of U-profiles made of sheet metal in their manufacture auszustanzen front side flaps, which then after the Auffalzen the long side walls forming one only one-sided, namely open on the lid-side open box as front walls by 90 ° become. Critical remains the sealing connection of the bent End wall to the folded longitudinal side wall.

Finally, it is also known from the prior art that the open ends of the already with the Connection connection elements populated and with a lid Covered storage boxes with a solid tape covering to stick together. It can, to a depression of the tape through To prevent concrete sludge, before applying the lid to the U-shaped rail space-filling moldings, mostly made of styrofoam, introduced to support the structural strength of the adhesive tapes be.

The connection terminal elements, as intended in here in question storage boxes should be introduced to at Need to connect the precast concrete part to others Concrete structural elements can be available Reinforcing bars, grommets made of reinforcing wires or elastic Be steel rope loops. Because of its easy handling on the Construction site will be mainly elastic on a large scale Steel wire rope loops used as connection connection elements. In this case, a loop formed from the steel cable is used as a connection head locked in the deposit box, while the opposite angled "foot" of the connection terminal from the Put out deposit box protruding into the concrete casting mold and when Pouring the precast concrete part with poured in and thereby in the concrete anchored. The restraint of such as Connecting terminal serving high elastic steel cord This is usually done so that the steel cable either before the insertion into the caddy floor by means of a Terminal molding is fixed bent at right angles, or, alternatively, relaxed, that is, extending in a plane into which Implementation used in the box floor and then exciting bent and fixed bent at right angles under holding elements, either on a separate intermediate molding or else itself formed on the storage box profile or otherwise provided are.

These two process steps, namely the onset of angled head portions of the connection terminals in the Deposit box and the preceding or adjoining one Closing the two end faces of the storage box are the two most complex processes in the production of sealed Deposit boxes with pourable and bendable Connection terminals. All the more so as with the Connection connection elements populated and sealed Deposit boxes by the requirement of entering the different construction site requirements not according to the strategies mass production can be produced, but to a large extent Construction site specific to be requested and in the corresponding Small series must be manufactured and delivered. This is true especially for such storage boxes too, as longer rails configured and equipped with multiple connection ports.

Based on this specific structural problem the invention is based on the technical problem, in particular the Front closure of the storage boxes to be designed so that with easier and faster assembly handling a denser and against the Pressure of liquid concrete sludge also mechanically stable Closure of the custody box can be obtained. It is one Another aspect of the invention, including the mold elements and moldings for clamping and inserting the connection connection elements in to further develop the storage box so that with the closing the side panels of the storage boxes on the one hand and with the Insertion of the connection terminal elements to be developed Moldings on the other hand, a synergism can be achieved that too one in his technical characteristics improved stocked and locked deposit box, which is also cheaper than can be produced by the known method.

The invention solves this problem by the formation of Sidewall closure element as a sealing plug, and indeed especially as axially pressed into the storage box inside Plugs. This is compared to the bonding of the Front side an increased tightness and pressure resistance is achieved opposite the screwing of separately manufactured sidewalls Reduction of manufacturing costs and also an improvement in the Tightness of the front wall closure is achieved over the Bending punched molded rail straps material, a Stamping process and a bending process saved, and is opposite the insertion of closure bodies in the for this purpose first still open storage box a tension-free lid closure allows to achieve a higher tightness and eventually become the Completion procedure costs lowered because of the onset of a Closure body and for the secure peripheral sealing of the body the depository does not require two processes and examinations, but only one process, namely the axial impressions of the plug in the already closed deposit box. In this process takes place the peripheral seal already at the axial impressions of the plug With. In particular, this aspect of the invention can thereby be perfected that the configuration and sizing of Closure plug are designed so that this in the front Edge section of the initially still open Verwankkastenseite with Tight fit and frictional connection ties.

Due to the formation of an over the front edge of the Trolley profile cross-collar on the plug, whose axial inner side when pressing the plug flush with the axial outer contour of the storage box adjoins, not only the Tightness of the closure, but also the reproducibility of Indentation depth can be improved without it being in the working stroke or too in the manufacture of the plug to increase the Assembly effort or material costs comes.

To continue before a machine closing the stocked Deposit boxes, for example, a rapid pre-assembly of the plug By hand, the sealing plugs are preferred axially tapered inwards with slightly inwardly inclined radially inwards Equipped pyramid surfaces, so that the plug at least in the Application area a total of truncated pyramidal Exterior configuration. This allows the plug in the Deposit box opening be firmly and sealingly wedged.

In addition, the plugs, whatever they are configured in detail, with be provided with elastic pawls, which in configurative cooperative Recesses are latched on the inside of the front open storage box are formed.

According to a particularly advantageous embodiment of the invention is the Side wall plug of the deposit box in particular so configured to be on a tray insertable into the custody box Shank or bridge the connection terminal element, in particular preferably already in the intended angled form, pre-assembled wears. By closing the open end wall surface of the custody box is thus simultaneously and in the same work cycle also the connection terminal in the storage box used, positioned and fixed.

In particular, when the plug simultaneously as Shaped body for holding, fixing and configuring a Connecting connection element, in particular an elastic Wire rope loop as a connection connection, serves, is after one further embodiment of the invention, in the bottom of the storage box itself after axially outward opening a cut provided, the one Passage of the concrete side foot of the Connection connection element when pushing in the stuffing box allows. Advantageous are in connection with it on the bottom side Area of the shaft portion of the sealing plug axially extending grooves formed, which axially to each other opposite inner edges of the bottom section of the Storage box to form a tongue and groove plain bearing connection take up. The passage opening in the storage box is characterized Closed concrete slurry.

Further embodiments of the invention are the subject of Dependent claims.

Figur 1

ein erstes Ausführungsbeispiel eines Verwahrkastenverschlussstopfens in perspektivischer Darstellung;

Figur 2

ein zweites Ausführungsbeispiel des Verschlussstopfens , ebenfalls in perspektivischer Darstellung;

Figur 3

ein drittes Ausführungsbeispiel des Verschlussstopfens;

Figur 4

ein viertes Ausführungsbeispiel des Verschlussstopfens, ebenfalls in perspektivischer Darstellung;

Figur 5

die offene Stirnseite eines kastenförmigen Verwahrkastens für Verbindungsanschlüsse im Betonbau zur Aufnahme des Verschlussstopfens und zur Durchführung einer Drahtseilverbindungsschlaufe; und

Figur 6

in schematischer Draufsicht und teilweise im Schnitt ein zweites Ausführungsbeispiel für die Durchführung eines in den Stopfenschaft eingesetzten Verbindungsanschlusselementes.

The invention is explained in more detail below with reference to embodiments in conjunction with the drawings. Show it:

FIG. 1

a first embodiment of a storage bin closure plug in perspective view;

FIG. 2

a second embodiment of the sealing plug, also in perspective view;

FIG. 3

a third embodiment of the sealing plug;

FIG. 4

a fourth embodiment of the sealing plug, also in perspective view;

FIG. 5

the open end of a box-shaped Verwahrkastens for connection connections in concrete construction for receiving the sealing plug and to carry out a cable connection loop; and

FIG. 6

in a schematic plan view and partly in section, a second embodiment for the implementation of a connector used in the plug connection element.

In the figure 1 is a first embodiment of a Closure stopper with the features of the invention shown, the for closing the open end of a storage box with trapezoidal cross section is used. The sealing plug 1 has two configurational main structures, namely a Closing plug plate 2 for sealing the open Front of the storage box, and a shaft 3, which is integral with the closure plug plate 2 is connected.

The side surfaces 4 of the closure plate 2 are the shaft 3, so, based on the longitudinal extension of the storage box, after axial inside to, with a slight inclination conical, truncated pyramid or formed wedge-shaped tapered and serve as sealing surfaces of the Closure plug 1 with respect to the front-side edge region of the Inner wall surface of the storage box (10) (Fig. 5). Here are the in Transverse direction short sealing surfaces 4.1 and the long sealing surfaces 4.2 with the two opposite surfaces 5.1 or 5.2 of the shaft 3 each in a plane, so that the Shaft 3 is slightly wedge-shaped. They serve in this Configuration facilitated and guided insertion of the Closing plug 1 in the open end wall of the storage box.

In this case, the inclination of the sealing surfaces 4 of the closure plate 2 is so dimensioned that when properly installed the Sealing plug during axial impressions of the sealing plug 1 in the Verwahrkasten 10 after training a snug fit with Friction locking and sealing the plug in the storage box fixed, the axially outer end face 6 of the closure plate 2 with the front edge 15 of the storage box 10 is aligned.

The shaft 3 serves in the manner described above first the easier insertion of the sealing plug. In the in Figure 1 shown manner is for the embodiment described here the shaft 3 of the closure plate 2 of the sealing plug 1 At the same time it is designed so that it can be bent or bent angled fixing a connection terminal element is used. To For this purpose, the shaft 3 has a continuously open vertical Opening 7 on that as a passage for the foot of one here not shown and to be protected in the storage box Connection terminal element serves while in the storage box to be received head portion of the connection terminal element under undercuts 8.1 and 8.2 coaxial with the extension of the Storage box or coplanar to the bottom and lid is held. To the implementation of the to be fixed in the concrete casting Foot section through the bottom 9 of the storage box 10 to allow (Figure 5), is in the trolley bottom 9 a Section 11 is provided which the axial sealing impressions of Veschlußstopfens 1 in the open end of the storage box 10th even when the stopper 1 at the same time as Mounting support for the connection connection element is used.

In addition, the closure plug 1 elastically latching Pawls 27 (Figure 1), which in the insertion of the Stopfens in the storage box 10 in associated recesses 28th (Fig. 6) in the inner wall of the storage box 10 undetachably engage.

A second embodiment of a sealing plug 1 with the Features of the invention is shown in FIG. The out there Closure plate 2 and shaft part 3 existing sealing plug. 1 serves primarily dense in the manner described above Closing the open end face of the storage box 10th At the same time, however, the cuboid shaft 3 is configured so that He specifically designed a comfortable pre-assembly of an elastic Steel cable loop allows as a connection terminal element. To For this purpose, the undercuts 8.3 and 8.4 on the shaft 3 are not up to the axially inner wall 12 of the plug closure plate 2 and also not aligned with the sealing surface 4.1 of the closure plate. 2 educated. The axially shortened design of the Undercuts 8.3, 8.4 an initially relaxed insertion of a plane elastic wire rope loops in the opening 7 and a subsequent right-angled elastic bending of the Loop head to axially inside and pressing the Cable loop wires under the undercuts against the elastic Preload. The deepening of the undercuts 8.3, 8.4 and thus also the surfaces 5.1 of the shaft 3 ensure that an am Shank fixed connection terminal element, in particular so a elastic wire rope loop, when closing the storage box with the equipped plug a grinding of the closure element on Lid or the imposition of a bias on the lid after can be excluded radially outward.

Furthermore, the shaft 3 in the manner shown in Figure 2 with two axially extending guide grooves 13 provided, which the parallel to each other opposite axial portions 14 of the Floor 9 of the storage box 10 in the area of the section 11 as Lead spring, absorb sealing and stabilizing. It is the Bottom surface 5.2 of the shaft 3 of the sealing plug 1 in its axial inside lying on the inside in the storage box Surface of the bottom 9 supported flat. The sealing surfaces 4 of Stopper plate 2 seal in the same manner as in the above Connection with the figure 1 explained on the inner wall of the Storage box 10 in the region of the front side edge 15th

A third embodiment of the invention is shown in FIG. 3 shown, also in perspective view. That one Sealing plug 1 shown differs from the two previously described sealing plug according to the embodiments 1 and 2 in that the closure plate 2 axially outward with a Stop plate 16 connected, in one piece connected to this, is formed, whose axially inner wall surface the Closing plug plate 2 surrounds a collar. This orbiting Collar surface 17 of the stop plate 16 is coplanar with the Closure plate 2 and the front side edges 15 of Custody box 10 aligned. It allows such a in the Repetitive production reproducible insertion of sealing plugs into the storage box 10 and also serves as an additional sealing surface in cooperation with the front side edges 15 of the Storage box 10. It should be noted here that the Representation of Figure 3 as well as all other representations of Explanation of the invention serve and no scale relationships demonstrate. In the actual configuration, the width of the Collar surface 17 dimensioned so that they are at least substantially is equal to the width of the front side edges 15 of the storage box, so that the outer peripheral surfaces 18 of the stop plate 16 with the Outer surfaces 19 of the storage box 10 are aligned.

In development of the basic pattern of the illustrated in Figure 1 and in Connection with this described closure stopper 1 of Invention, the sealing plug 1 according to that in Figure 3 shown third embodiment of the invention axially inside an insertion bevel 20, which is also a machine insertion of the sealing plug in the storage box 10 by accordingly controlled production machines allows. At the same time the in Figure 3 shown sealing plug 1 on the axially outer Rear side of the opening 7 with two parallel to each other aligned guide grooves 21 which provide the guide, fixation and holding a closure element inserted in the stopper improve and at the same time improve the tightness of the implementation.

FIG. 4 shows a fourth exemplary embodiment of the invention shown, which is a further embodiment of the illustrated in Figure 2 Closing plug shows. The sealing plug shown in Figure 4 Specially designed for preassembled recording elastic Wire rope loops as connection connection element. From the in 2 shown embodiment differs from that in Figure 4 embodiment shown above all by an extension of the Shutter plate shaft 3 in the axial direction and an arrangement of Undercuts 8.3, 8.4 at a greater axial distance from the Bending curvature of the elastic rope loop. This will make larger Curvature radii and improved resilience of the elastic steel cable loop allows. Such an enlargement of the Bending radius can be promoted by bending the elastic steel cable loop over a bar 22 with rounded Bending edge 23 is carried out as a crossbar between the Durchführungsdurchbrechung 7 and the Niederhaltern or Undercuts 8.3, 8.4 is provided.

The sealing plug with the features of the invention are used for Closing the open ends of storage boxes with box-shaped or rail-shaped hollow body basic structure as they for the protection of connection connection elements in precast concrete construction be used. Even if the recognizable benefits of Closure stopper with the features of the invention also in Connection with initially open channel-shaped boxes, which only after the axial impressions of the sealing plug with a lid be closed, can be used, so come the advantages of Closure stopper with the features of the invention especially then fully effective when it comes already as finished and closed, only frontally open hollow box profile to seal trained deposit boxes. Such a one-piece trained, closed except for the end faces Box body profile as Verwahrkasten body is shown in Figure 5. The Verwahrkastenprofil is trapezoidal in cross-section, so that itself with an open lid closing the open end faces by adhesive tape or screwing in weirs no longer useful is possible. However, such storage boxes for concrete construction are despite its trapezoidal cross section with the sealing plug with the Features of the invention effortlessly and even by machines and in the If necessary, even with pre-assembled connection connection elements can be fitted and reliably closed and concrete sludge-tight.

In the storage box shown in Figure 5 is the illustrated open End face for receiving plugs determined as they described above in connection with FIGS. 1 to 4 have been. In the bottom 9 of the storage box 10 is a cutout 11th provided by the axially inward the foot sections performed the connection terminal elements can be introduced. As in the storage box shown in Figure 5, can in the axial inside lying end-side stop edge 24 recesses 25th be formed, which performed for a sealing recording of the Strands of a connection terminal element are configured. she for example, with appropriately guided and configured Guiding grooves 21 cooperate, which in the figures 3 and 4 for the shown there and in connection with These figures are explained.

Finally, FIG. 6 shows an alternative form of embodiment of the invention Section 11 of a storage box 10 shown in which the Recesses for the feedthroughs of the connection terminals not at the axially inner stop edge 24 side by side lie, but in the mutually parallel axial Edges 14 as a mirror symmetry opposite each other Recesses 26 are provided.

In Figures 1 to 4 and in Figures 5 and 6 are Deposit box configurations and closure elements based on Examples with the features of the invention described by a Constellation go out, in which the closure element at the same time Carrier of a particular pre-assembled Connection terminal element is. Especially when using relatively short and with only a single connection terminal element equipped storage boxes 10 is the axially opposite open Front side of the storage box usually also with an axially in closed the storage box depressible stopper, the with or without shank part 3 and with or without stop plate 16 by means closed a Viefussopfens, only the closure function the closure plate 2 has. If such a kind of unpopulated open end of the storage box has no cutout 11, can such an open front even with plugs of example in the figures 1 and 3 shown type with a Durchführungsdurchbrech 7 sealed tight and tight. This allows for such a configuration, the storage only a single plug type for both the to be loaded and for the unmounted faces of the deposit boxes. On the other hand, should the Deposit boxes alternately with one or two Connecting connection elements be equipped, so the Closing plug next to the sealing closure plate 2 a Shank 3 of the type shown in particular in Figure 1, in which at least no opening 7 is open.

In summary, the invention thus discloses a storage box and a closure member for closing one or both open ones Front sides of such a storage box with box-shaped or Rail-shaped hollow body basic structure for the concrete density Receiving connection connection elements. The Closure elements are considered to be axially in the storage box Configurable push-in plugs, creating a reliable and automatable sealing and sealing also not rectangular or non-square storage box profiles becomes.

Claims (14)

Storage box and closure element for closing an open end of a storage box with a box-shaped or rail-shaped hollow body basic structure for connection connections in concrete construction,
marked by
the configuration of the closure element as axially in the storage box (10) collapsible sealing plug (1). Deposit box and closure element according to claim 1,
marked by
a configuration and dimensioning of the plug (1) for a fit with frictional engagement in the storage box (10). Storage box and closure element according to one of claims 1 or 2,
marked by
a collar-like stop plate (16) of the plug (1) in its peripheral configuration and in its peripheral dimension (18) when closing the storage box (10) with the plug flush with the outer contour surfaces (19) of the storage box (10) is connectable. A deposit box and closure element according to any one of claims 1 to 3,
marked by
a wedge-shaped or truncated pyramid-shaped outer configuration (4; 5.1, 5.2) of the plug (1). A deposit box and closure element according to any one of claims 1 to 4,
marked by
Pawl members (27, 28) on the inner wall of the storage box (10) and on an associated portion of the outer wall of the closure plug (1) which prevent non-destructive withdrawal of the plug from the storage box. A deposit box and closure element according to any one of claims 1 to 5,
marked by
a in the bottom (9) of the storage box (10) formed axially aligned and axially outwardly open slot-like feed-through cutout (11) for the passage of the Vergussseitigen foot end of a connection element, the head part is kept protected until proper erecting in the storage box. A deposit box and closure element according to any one of claims 1 to 6,
marked by
at least one perpendicular to the plane defined by the bottom (9) of the storage box aligned groove or groove (21) in the plug (1) for guiding and aligning led out of the storage box Vergussseitigen foot end of the connection connection element. Deposit box and closure element according to one of claims 1 to 7,
marked by
a plug-in suitable Vormontierbarkeit a wire rope loop on the sealing plug (1). A deposit box and closure element according to any one of claims 1 to 8,
marked by
a cofunctional configuration and dimension of the axially inner edge (24) of an axially directed in the bottom (9) of the Verwahrkastens (10) formed and axially outwardly open slot-like Durchführungsausnehmung (11) and aligned perpendicular to the plane defined by the bottom and lid of the custody box extending groove or guide groove (21) in the plug (1) for guiding and aligning led out of the storage box Vergussseitigen foot end of the connecting element such that the axially inner edge (24) of the slot (11) and, based on the storage box (10 ), axially outer profile of the guide groove (21) in the plug (1) together form a circumferentially limited opening whose cross-sectional profile by configuration and dimension is equal to or only slightly larger than the cross-sectional profile of the performed connection element at this point. A deposit box and closure element according to any one of claims 1 to 9,
marked by
a cofunctional configuration and dimensioning of recesses (26) in the axially extending inner edges (14) in the bottom (9) of the Verwahrkastens (10) formed axially aligned and axially outwardly open slot-like feedthrough recess (11) and two perpendicular to the through the floor (9) of the storage box (2) defined plane extending and, based on the storage box, in the transverse direction outwardly open grooves in the plug (1) for guiding, aligning and sealing led out of the storage box Vergussseitigen foot end (11) of a connection element (1). A deposit box and closure element according to any one of claims 1 to 10,
marked by
an integral with the stopper (1) neck or shaft (3) which is equipped at its axially inner end with positioning means or hold-down means (8) for the connection terminal element. A deposit box and closure element according to any one of claims 1 to 11,
marked by
a stopper with an integral web-like and rigid shaft (3), which at its axial side surfaces in the region of its bottom edges each having an axially aligned and axially inwardly open groove (13) for receiving the respectively facing axial inner longitudinal edge (14) of the slot-like feedthrough recess (11 ) having. A deposit box and closure element according to any one of claims 1 to 12,
marked by
an integral with the stopper (1) web-like and rigid shank portion (3) with a crossbar (22) as a bending edge and / or bending positioning edge (23) for the connection connection element. A deposit box and closure element according to any one of claims 1 to 10,
marked by
an elastic steel cable loop as a connection element.

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