DE7303701U - TENSION PIECE - Google Patents

Description

Tension

The invention relates to a tensioning piece, in particular for devices for tensioning beguiling formwork, with a contact plate and an internal thread located on it for screwing in a threaded rod or the like. having screw connection part.

When erecting concrete formwork, a tie rod is often used to tension the formwork, which at least is provided with a thread in the area of its front end and at the other end e.g. a hexagonal head, a handle or the like. having. This tie rod is passed through the formwork from one side, whereby they can pass through a tubular spacer and are inserted one on top of the other The clamping piece located on the formwork side is screwed in. Such devices are used especially there

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sets where an outside of the formwork is not or only is difficult to access

The clamping piece that is used to screw in the clamping rod usually has the shape of a plate, which is in one of the internal threads for screwing in the tension rod containing approach continues. The Plattcnte.il deo clamping piece is provided with holes for nailing to the external squared timber and / or with a claw to be driven into the wood, so that the clamping piece can be attached to the relevant part of the formwork before the tie rod is screwed in.

When building a formwork, it can happen that the The passage in one of the formwork walls, which is used to guide the tensioning rod, is not exactly in line with the tensioning piece attached to the other side of the formwork. Difficulties arise in such cases because calibration cannot freely adjust the clamping piece to the direction of the clamping rod. Problems in this regard arise particularly with formwork in which the a formwork wall does not run parallel to the other formwork wall, but is inclined with respect to this or at an angle to her.

The aim of the invention is to solve existing difficulties and inadequacies in the mentioned and similar cases.

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opportunities to fix and a simple and robust clamping piece for screwing in a threaded rod or the like. to create that can adapt to the respective circumstances and adjust itself accordingly, anyway but a safe implementation of the screwing process is permitted.

For this purpose, the invention provides that the contact plate is provided in a manner known per se with a dome-shaped seat for receiving one end of the screw part, which is adapted to the shape of the seat, and which is held movably relative to the contact plate, and the screw part at its end facing the contact plate serves as a rotation lock has flat and mutually parallel boundary surfaces which lie between two flat surfaces adjacent to them on a part holding the screw connection part on the contact pad.

A clamping piece is thus created, the screw connection part of which changes depending on the circumstances of the application in question can adjust by pivoting relative to the contact plate and is safely guided and prevented from rotating about its axis. It stands out the clamping piece also has a simple structure, robustness and great stability.

As an advantageous further embodiment of the clamping piece, the invention provides that the screw connection part at its end facing the contact plate is at least partially designed as a spherical head and is supported by an in their interior at least partially encompassed spherical cap-shaped cap and through this on the contact plate is held.

The cap is expediently firmly connected to the contact plate. It can especially after the insertion of the Screwed part welded to the contact plate or fixed by gluing on this. But it is It is also not ruled out that the cap can be detachably connected to the contact plate, for example by means of a thread or a screw cap.

The screw connection part can be designed in its area facing away from the contact plate as it is for the Intended use is most favorable. In particular, it can also have a smooth shaft.

The clamping piece can be made of steel or another metal or, if necessary, and at least partially also from another metal Material, e.g. plastic.

Further details and features of the invention are provided explained below with reference to an embodiment of the clamping piece shown in the drawing. Show it;

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Fig. 1 a clamping piece seen from the outside,

Fig. 2 is a partially cut-away side view of the clamping piece and

Fig. 3 and '+ two side views of the screw connection part of the clamping piece according to FIGS. 1 and 2.

The contact plate 1, for example punched in the die, has a bulged central part la, four of which to the corners the plate towards stiffeners go out in the form of bead-like expressions Ib. On the outside the middle part of the contact plate has a dome-shaped seat 2, the shape of which corresponds to the spherical head-like end part U of a screw connection 3 is adapted, which is otherwise formed by a smooth shaft 5 and with an internal thread 6 for screwing in a threaded rod

7 (Fig. 2) is provided.

The head 4 of the screw connection part is covered by a cap

8 overlaps, which is welded to the contact plate 1 and whose shape inside the shape of the spherical head U of the screw connection part is adapted. The screw connection part 3 is held securely in this way and can be a Swivel movement in the sense of the arrows shown in Fig. 2 relative to the contact plate 1 and εο-with adjust at the angle as required.

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The ball head 4 of the Verechraubunge.teiles 3 is on two opposite sides flattened. The resulting flat boundary surfaces 9 are between two adjacent flat surfaces 10 of the cap 8 (Fig. 1), so that the Versohraubungeteil 3 although in one The plane can pivot freely, but is secured against rotating about its axis.

In the contact plate 1 holes 11 are provided so that Bie on a square timber or on another part of a Formwork can be nailed. A tie rod can then be passed through from the other side of the formwork Guide the formwork through and screw it into the screw connection of the fixed clamping piece.

Although the clamping piece can be used with particular advantage in the construction of concrete formwork, however, it is not limited to this use.

All of the features mentioned in the above description or shown in the drawing are intended, provided that the known state of the art allows it to be viewed individually or in combinations as falling under the invention

Protection claims:

Claims (5)

t f til * protection requirements 1. Clamping piece, especially for devices for clamping concrete formwork, with a contact plate and an on this located, an internal thread for screwing in a threaded rod or the like. having screw connection part, characterized in that the contact plate (1) in a known manner with a dome-shaped Seat C2) for receiving an end (If) which is adapted to the shape of the seat (2) and is movable relative to the contact plate (1) held screw connection part (3) is provided and the screw connection part (3) on its the contact plate (1) facing end (4) as a rotation lock two flat and parallel boundary surfaces (9) has, the between two adjacent flat surfaces ClO) on one of the screwing part C3) on the Support plate Cl) holding part (8) lie. 2. Clamping piece according to claim 1, characterized in that the screw connection part (3) at its end facing the contact plate Cl) is at least partially designed as a spherical head C4) and is overlapped by an at least partially spherical cap (8) in its interior and through this at the Attachment plate CD is held. j -2- 3. Clamping unit according to claim 2, characterized in that the cap (8) is firmly connected to the contact plate (1)
is. S. H. clamping piece according to claim 2, characterized in that the cap (8) is detachably connected to the contact plate (1). / 5. Clamping piece according to one of claims 1 to 4, characterized in that that the screw connection part (3) in its area facing away from the contact plate Cl) as essentially smooth shaft (5) is formed.