ES1060275U - Anchorage case (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Anchoring sleeve of a screw in concrete construction elements, which having as means to establish drainage means for the cover, achieve a correct sealing of the cover, as well as facilitating a simple and correct positioning of the cover in the concrete element, of the type consisting of a sheath (1) provided with peripheral protrusions and a through-hole (2) having a thread, is characterized by the fact that a cannula extends from the end of the sheath (1) ( 3), after the inner bore (2), which extends in length to at least the face opposite that of the screw of a concrete component (6). (Machine-translation by Google Translate, not legally binding)

Description

Anchor cover.

Object of the invention

The present invention relates to a cover of anchoring of a screw in concrete construction elements, constituted by a hollow cylindrical configuration body that presents its internal threaded part, in which the screw is threaded, and external peripheral projections for anchoring the sheath in the concrete, finding its open limb, incorporating in solidarity a cannula, which aims to constitute a drainage route of liquid and aggregates, maintaining the internal part of the body of the case free of said elements, get a correct seal inside the case, and ensure precise positioning of the case when it is incorporated into the mold for manufacturing the concrete element in which has.

The object of the invention has application in Civil works related industries, whenever required the concrete arrangement of covers for screw anchoring, and preferably for use in fixing the rails of railway to concrete sleepers as a means of receiving the screws that link the rail to the crossbar itself.

Background of the invention

There are currently fixing devices of railroad track rails by linking to concrete sleepers, which generally consist of in the arrangement of sleeves in the formwork molds of the sleepers, so that when pouring and setting the concrete on said mold the sleeves are integrated in the sleepers, proceeding then to establish the link between anchor plates or the like that fix the position of the rail to the concrete crossbar by fixing screws that thread in said sleeves.

Some of these sleeves have their closed limb, with the aim of preventing water penetration or aggregates inside the sheath, which would oppose the screwed on the screw, which can lead to breakage of the sheath and cracking of concrete by the force exerted by the screw. The problem that this type of covers presents, once mounted, is that they do not ensure the tightness inside the same, so that when the water penetrates and accumulates in the bottom, it can freeze and form an ice plug against the which acts the screw during its screwed in the cover, having the same effect as a stone, causing the sheath to break and even the cracking of the concrete surrounding it.

There are other types of sleeves that solve partially the problem described above, which they incorporate a material plug easily destructible, or a thin sheet of the same material as the body of the case, once the case has been incorporated into the manufacture of the concrete element, having to practice a drilling in the concrete, either when molding the piece or after setting, that serves to drain the construction element, presenting the inconvenience of having to incorporate said plug in its manufacture,  In addition to having to be destroyed prior to screwing the  screw and the need to drill on its own concrete as drainage, being its main drawback, in addition to sealing problems inside the sleeve during the concreting, positioning and centering problems of the cover in the mold of the concrete element, which are not what sufficiently precise and tight, which is a given determinant the precision that is required, for example in the case of positioning of rail anchor bolts on sleepers of concrete, in which a position and inclination of the themselves very concrete, and which in turn allows adequate drainage of the inside the case as well as the evacuation of inclusions not desired, in order to ensure a free screwing without screw obstacles.

Description of the invention

The anchor sleeve of a screw in elements concrete construction proposed by the invention constitutes a breakthrough in devices of this type so far used, and solves the problem fully satisfactorily previously exposed, in the line of not specifying the incorporation of a through hole in the molding of the element constructive, not even after setting, to favor the evacuation of liquids, by arranging a cannula at the end of the sheath, which is part of it permanently, so it is not done it is necessary to mold any duct, extending said cannula to reach the face of the concrete element opposite to that of Screw insertion, such as the base support of a support of a rail support, fulfilling the double drainage function, thus favoring the exit of unwanted inclusions, getting a correct seal of the inside of the cover during concreting of the element constructive, and serving said positioning element cannula Accuracy of the sheath during molding manufacturing itself concrete building element, thereby simplifying the manufacture of it.

The anchor sleeve of a screw in elements Concrete construction object of the invention, is based on a sheath composed of a hollow cylindrical configuration body that it presents its threaded internal part, in which it receives the screw, and external peripheral projections for anchoring the cover in the concrete, incorporating at the end of the cover, the which is open, a cannula that extends from its limb and that constitutes a permanent drainage conduit, which seals the inside of the case and serves to position the sheath during the molding process by which the concrete building element.

The cannula is constituted as an extension of the threaded central bore of the sheath, in which it will normally engage a rod that fixes the W position of the sheath in the mold of formwork used to obtain for example a naughty concrete. Once the construction element has been concreted, the stem it is removed and the cover remains integral to the concrete element, being available to receive the fixing screw that link for example the rail to the crossbar.

The cannula extends from the base of the sheath, in different ways possible. In a variant embodiment preferably the cover can be manufactured by means of a process of Joint injection with the sheath.

The manufacturing of the cover by constituting the cannula as a piece independent that fits the sheath either by clipping or by screwed.

Description of the drawings

To complement the description that is being performing and in order to help a better understanding of the characteristics of the invention, according to a preferred example of practical realization of it, is accompanied as an integral part of said description, a set of drawings where with character Illustrative and not limiting, the following has been represented:

Figure 1.- Shows a perspective view of the anchoring sleeve of a screw in construction elements of concrete, in which the sheath and cannula can be seen.

Figure 2.- Shows a sectional view of the tip of the 1 sheath in which the cannula is attached by clipping into the sheath, entering from outside the sheath.

Figure 3.- Shows a sectional view of the end of the sleeve on which the cannula is attached by clipping into the sheath, entering from inside the sheath.

Figure 4.- Shows a sectional view of the end of the sheath in which the cannula is injected along with the thread of the sheath.

Figure 5.- Shows a sectional view. partial formwork mold in which the element of concrete construction with the cover positioned for setting of the same.

Preferred Embodiment of the Invention

In view of the figures outlined you can be observed as the anchor sleeve of a screw in elements of Concrete construction object of the invention, is composed of a sheath (1), as can be seen in figure 1, provided with peripheral projections for anchoring the sheath in the concrete to facilitate its anchorage in the concrete during its setting in a formwork mold (7), shown in figure 5, which has an internal through hole (2) presenting a thread steak in which introduces a screw for fixing, for example of a rail, with a concrete construction element (6), which can be a sleeper, formed by concreting inside the mold formwork (7).

From the tip of the sheath (1) it extends a cannula (3) following the internal through hole (2), which extends over a certain length to at least the face opposite the screw of the concrete construction element (6), becoming a drainage pipe for evacuation of unwanted inclusions, such as liquid and aggregates.

The cannula (3) can have its free limb blind to prevent the inclusion of concrete during concreting and You can also have a series of slots (8) in the proximities of said limb that facilitate the cutting of the cannula (3) to open it outside.

Different embodiments are contemplated practice in the ways of linking the cannula (3) to the sheath (1), which are set out below.

In a variant, as shown in the Figure 4, the cannula (3) is manufactured together with the sheath (1) by injection, forming a single piece.

In another variant, as shown in the figure 3, the possibility of coupling the cannula (3) by clipping is contemplated on the inner through hole (2) of the sheath (1), incorporating an annular stop (4) at its coupling end with the sheath (1), having a perimeter projection at a distance angle (9) that establishes the fixation of the cannula (3), which manufactures by injection independently of the sheath (1), by clipping, resting on the perimeter edge of the drill through interior (2), guaranteeing the tightness of the sheath (1), especially during concreting, preventing the cannula (3) tilt, also the clipping can be done from the area outside of the sheath (1), as can be seen in the figure 2.

It also contemplates the fact that the highlight angular perimeter (9) is discontinuous.

Finally, the possibility that the cannula (3) is manufactured by injection independently to the sheath (1) and is provided at its end with a thread outer (5) that screws into the inner through hole (2).

Claims (6)

1. Anchor cover of a screw in concrete construction elements, which having as a means of draining the cover, achieving a correct sealing of the cover, as well as facilitating a simple and correct positioning of the cover in the concrete element , of the type consisting of a sheath (1) equipped with peripheral projections and an internal through hole (2) that has a thread fillet, it is characterized in that a cannula (3) extends from the end of the sheath (1). ), following the internal through hole (2), which extends in length to at least the opposite side of the screw of a concrete construction element (6). 2. Anchors cover of a screw in concrete construction elements, according to claim 1, characterized in that the cannula (3) has its blind free end to prevent the inclusion of concrete during casting and has a series of grooves (8) in the vicinity of said limb that facilitate the cutting of the cannula (3) to open it outside. 3. Anchors cover of a screw in concrete construction elements, according to the preceding claims, characterized in that the cannula (3) incorporates an annular stop (4) at its coupling end with the sheath (1) and slightly separated has an angular perimeter projection (9) that establishes the fixation of the cannula (3) by clipping and is supported on the perimeter edge of the inner through hole (2). 4. Anchor cover of a screw in concrete construction elements, according to claims 1 and 2, characterized in that the cannula (3) is extended forming a single piece with the sheath (1) obtained by injection. 5. Anchors cover of a screw in concrete construction elements, according to claim 1, characterized in that the cannula (3) is provided at its end with an external thread (5) that threaded into the internal through hole (2) . 6. Anchor cover for a screw in concrete construction elements, according to claim 3, characterized in that the angular perimeter projection (9) is discontinuous.