ES1060723U - Device for handling slabs in prefabricated elements of concrete (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Device for fitting handles in prefabricated concrete elements, specifically handles formed by a short cylindrical bar endowed with disc-shaped expansions, one of which is intended to be embedded in the concrete mass, and the other to form the handle properly speaking, characterized in that it is constituted by the functional combination of a body of plastic nature, which forms a kind of hemispherical bowl, with a wide flat chamfer in its polar zone, affected by a central hole and by a plurality of radial cuts that allow its elastic deformation for coupling inside said bowl of the discoidal expansion of the handle constituting the handle itself, and a lid engageable under pressure to the mouth of said cup, and which forms with the latter a chamber that is substantially watertight, intended for be embedded in the concrete mass, so that the the top is coplanar with the outer surface of the plate. (Machine-translation by Google Translate, not legally binding)

Description

Device for recessing handles in elements Precast concrete.

Object of the invention

The present invention relates to a device which has been specially designed for the attachment of handles metal in precast concrete elements, such as plates, pillars, beams and other prefabricated building elements, which need handles designed to facilitate their mobility.

The object of the invention is to achieve a device that allows the accessible sector of said handles be easily independent of the constituent concrete of the element constructive, without such handles protruding from the general surface of it.

The device is of special application in the scope of manufacturing concrete construction elements prefabricated, for construction and public works in general.

Background of the invention

The large precast concrete elements, mentioned in the previous paragraph, they are manipulated with the contest of cranes or other similar elements, for what it is it is necessary that said elements incorporate clamping devices that facilitate this task, clamping devices that obviously they should not stand out either by the faces or by the edges of the concrete elements, so that they do not interfere in the coupling between them.

In this sense handles are used materialized in a short steel bar equipped with expansions discoidal of its ends, so that half of said bar and an extreme expansion are embedded in the concrete mass of the constructive element, while the rest of the handle is outside said concrete mass, but inside a receptacle defined in it.

For the preparation of this receptacle it is used usually a rubber body, of hemispherical configuration, hollow, equipped with a diametral cut in its curved surface that expands in a central hole at its midpoint, so that said hole adjusts dimensionally to the handle bar, while inside the body the expansion is housed discoidal and corresponding handle. This rubber body mounted on the corresponding end of the handle is also embedded in the concrete mass during element setting prefabricated, and at the end of said setting it is necessary to carry out the breakage of the concrete surrounding said body, so that it is totally released and to be able to decouple it from the handle, so that at your This last time can be used.

This is a problem that focuses fundamentally in the following aspects:

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The removal of set concrete that wraps the rubber body it requires hammering operations with chisel and hammer, constituting a task quite tiresome, slow and at risk of accident for the operator

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By hitting effect necessary for the breakage of concrete that Wraps around the rubber body an irregular finish occurs in the constructive element, which forces manipulations of rectification of the same through masonry.

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He cost of the constituent material of said rubber body, forces a reuse of it, a number of times that normally It ranges between 3 and 5, but this reuse is conditioned by the skill of the operator during the beating for his release, since that such a hit can destroy the rubber body.

Description of the invention

The device for recessing handles in precast concrete elements that the invention proposes, solves the problem fully satisfactorily previously exposed, so that said device complies with fully fulfilling its function, without the need to carry out maneuvers of beating and breaking of the concrete mass, to the release of it, so that the plate finish after its assembly is markedly better and does not require any operation subsequent grinding of it.

To do this and more specifically the device which is recommended is constituted by the functional combination two pieces of plastic, low cost, one in the form of spherical cap, near the hemisphere, with a sharp chamfer plane in its polar zone, with a hole centered in said sector plane for passage of the bar that participates in the handle, and with a plurality of emerging radial cuts of said central hole Deformable fin determinants that allow access to the discoidal and corresponding expansion of the handle inwards of said cap, while the other piece materializes in a lid that closes the mouth of it and that engages under pressure in said mouth.

Said cover also incorporates in its external face a diametral channel on its surface, which facilitates movement elastic of the same at the time of disassembly and a couple of recessed or small cavities that allow the coupling of a clamp for disassembly of the lid with respect to the body.

According to this structuring and in situation for mounting the device on the corresponding end of the handle, said device, specifically the combination of its body and its cover, defines a camera substantially watertight in whose interior houses the corresponding area of the handle, and device and handle are introduced into the mold to obtain the precast concrete element, so that the lid of the device is flush with the surface of the element constructive.

Once the setting phase of the concrete, the device cover can be removed with the contest of the corresponding clamp while the bowl It constitutes a lost element, which is definitely inserted within the concrete constitutive of the building element and it configures a kind of bell in whose bosom it is located, in conditions of free accessibility, the corresponding limb of the handle, on which any type of mooring can be made appropriate, for handling the prefabricated element with a crane or similar.

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 part member of that description, a set of drawings where with illustrative and non-limiting nature, what has been represented next:

Figure 1. - Shows an exploded perspective. of a device to embed handles in elements precast concrete made according to the purpose of the present invention, with the complementary handle.

Figure 2. - Sample, according to an elevation view lateral and in section, the same device of the previous figure properly assembled and implanted in a prefabricated element of concrete.

Figure 3. - Shows, according to a view in perspective, a detail of the set represented in the figure above, at the level of one of the handles of the concrete element and after removal of the device cover.

Preferred Embodiment of the Invention

In view of the figures outlined and especially of Figure 1, can be seen as the device that the proposed invention has been specially designed for handles in those that define a cylindrical bar (1), of short length, topped by its ends in two discoidal expansions (2) and (3), of which one of them (3) is destined to remain definitely embedded in the mass of the concrete (4) constitutive of the constructive element, as well as the corresponding half of the bar (1), while the rest of the handle is intended for constitute the handle itself.

Well, the device of the invention is materializes in a plastic bowl (5), tending to the hemispherical configuration, but with a wide flat faceting and circular (6) on its polar zone, faceted (6) that incorporates a central hole (7), of diameter substantially coincident with the of the bar (1) constituting the handle, hole (7) of which a plurality of radial sections (8) fin determinants emerge in the form of a circular trapezoid (9), also in radial arrangement, topped by its inner limb on a layered pin (10) that improves the adaptation to the bar (1), so that said faceting plane (6) is susceptible to radial deformation, extending from considerable shape of the hole size (7), to allow passage through the discoidal expansion (3) of the handle, and after said coupling and by elastic recovery of the material, its adaptation to the bar (1) thereof.

The bowl (5) is complemented with a lid (11), circular, equipped on its perimeter with a flange (12) of suitable characteristics to allow pressure coupling from it to the mouth of the bowl (5), to stabilize conveniently these pieces with each other, housing inside the discoidal expansion (2) of the handle.

To improve this fixation, the cover (11) incorporate an alignment on its inner face circumference) of bumps (13) snap-in to the discoidal expansion (2) of the handle, to center and stabilize conveniently these pieces with each other, also incorporating said cover (11), as opposed to the channel or diametral groove (14) external, a pair of wide internal protuberances (15) which correspond to external recesses (16) to which they are attachable the arms of a clamp (17) to remove said cover (11) once concrete setting has occurred (4) constituting the plate and to free the accessible area of the handle (1-2), as shown in the figure 3.

Claims (3)

1. Device for recessing handles in prefabricated concrete elements, specifically handholds constituted by a short cylindrical bar provided at its ends of discoidal expansions, one of which is intended to be embedded in the concrete mass, and the other to constitute the handle proper, characterized in that it is constituted by the functional combination of a body of a plastic nature, which forms a kind of hemispherical bowl, with a wide flat chamfer in its polar zone, affected by a central hole and by a plurality of radial cuts that allow its elastic deformation for coupling inside said cup of the discoidal expansion of the handle constituting the handle itself, and a lid that can be snapped into the mouth of said cup, and which forms a substantially sealed chamber for the latter, intended for be embedded in the concrete mass, so that the lid is coplanar with the outer surface of the plate. 2. Device for recessing handles in prefabricated concrete elements, according to claim one, characterized in that the hole of the flat facet of the bowl is of diameter in accordance with that of the handle bar, the radial cuts emerging from said hole determine isoscelic trapecial fins , with an obtuse bend in its inner extremity and affect an area of said flat facet higher than that defined by the discoidal and corresponding expansion of the handle. 3. Device for recessing handles in prefabricated concrete elements, according to previous claims, characterized in that the lid has on its periphery with means of pressure coupling to the mouth of the bowl, on its inner face with ribs of coupling to pressure to protrusions of the outer face of the discoidal expansion of the handle, and on its outer face a diametral channel and a pair of recesses in diametral opposition, for coupling a clamp or decoupling tool of said lid with respect to the bowl, once it has been produced the setting of the concrete.