EP1734201A2

EP1734201A2 - Device for clamping iron trestles or struts to be arranged in concrete floor slabs or walls

Info

Publication number: EP1734201A2
Application number: EP05023334A
Authority: EP
Inventors: Camillo Fumagalli
Original assignee: Fumagalli Edilizia Industriaizzata SpA
Current assignee: Fumagalli Edilizia Industriaizzata SpA
Priority date: 2005-06-17
Filing date: 2005-10-26
Publication date: 2006-12-20
Anticipated expiration: 2025-10-26
Also published as: ITMI20050221U1; DE602005011592D1; EP1734201B1; ATE417165T1; EP1734201A3

Abstract

The present invention relates to a device (1) for clamping iron trestles or struts (20) to be arranged in concrete floor slabs or walls, comprising at least a block (2) rigidly associated with a cross rod or rebar (3) and defining latching or clamping bodies (10) to be removably coupled to the base iron elements (20A,20B) of the trestles or struts (20).

On the block (2) are moreover provided a plurality of seats (14) for housing longitudinal iron elements (15).

Description

BACKGROUND OF THE INVENTION

The present invention relates to a device for clamping iron trestles or struts to be arranged in or inserted into concrete floor slabs or walls.
Strutted or trestled slabs for making concrete floors and walls are already known.
In particular, said strutted slabs are made starting from a concrete slab, reinforced by electrowelded iron struts or trestles and other reinforcing iron elements, with overlaying polystyrene blocks, which are clamped to the slab.
The thickness of said slabs conventionally varies from 4 to 6 cm and usually said slabs have a width of 120 cm and a length from 1 to 12 m, according to the building spans and floors to be made.
The polystyrene blocks have a height which can vary from 15 to 50 cm.
In making said floors and walls in a building yard, an additional reinforcing iron element is optionally added, an electrowelded net is arranged on the polystyrene blocks, and the concrete is cast so as to fill the gaps between the blocks, to form a covering layer above said blocks with a thickness of about 5 cm.
In prior approaches and methods, great problems are encountered in properly locating the struts or trestles which must be held in a proper position during the casting or pouring operations, both to prevent any floating phenomenon and to allow the concrete to fully and evenly embed therein the reinforcing iron elements and rebars.

SUMMARY OF THE INVENTION

Thus, the aim of the present invention is to solve the above mentioned problem, by providing a device for clamping iron trestles or struts to be arranged in concrete floors and walls, allowing to accurately and quickly locate the trestles and reinforcing iron elements, while holding them in their preset positions defined during the concrete casting operations.
Within the scope of the above mentioned aim, a main object of the invention is to provide such a clamping device which allows to greatly simplify all the slab making operations, thereby providing optimum results.
A further object of the present invention is to provide such a clamping device which, owing to its specifically designed constructional features, is very reliable and safe in operation.

BRIEF DESCRIPTION OF THE DRAWINGS

Further characteristics and advantages of the clamping device according to the present invention will become more apparent hereinafter from the following detailed disclosure of a preferred embodiment thereof, which is illustrated, by way of an indicative, but not limitative example, in the accompanying drawings, where:

Figure 1 is a schematic perspective view showing a clamping device or element applied to a reinforcing iron rod or rebar;
Figure 2 shows a cross iron rod or rebar with applied the clamping devices or elements according to the present invention;
Figure 3 shows, on an enlarged scale, a starting connection operation for connecting a base iron element to a block forming the clamping device or element;
Figure 4 shows an end operation or step for connecting the trestle or strut; and
Figure 5 shows the trestle or strut arrangement as embedded in the poured or cast concrete material.

DESCRIPTION OF THE PREFERRED EMBODIMENT

With reference to the number references of the above mentioned figures, the clamping device or element for clamping iron trestles or struts to be arranged in concrete floor slabs and walls, according to the invention, which has been generally indicated by the reference number 1, comprises a plurality of blocks 2 which are clamped to a cross rod element or rebar 3.
Typically, with rod elements or rebars having a width of 118 cm to be used for making slabs of 120 cm, two side blocks and a central block would be provided.
The block 2 comprises an elongated central body 4 coating the rebar 3 and which, at its end portions, is coupled to coupling or latching bodies 10 which, on a side thereof, comprise a plurality of foot elements 11, including respective tooth pattern, defining housing seats which are arranged substantially perpendicular to the rebar 3.
At the bottom, on a side opposite to the foot elements 11, are provided a plurality of bearing feet 12 for bearing on the caisson while holding the rebar 3 in a raised condition.
Between the latching bodies 10 a plurality of seats are arranged for housing therein longitudinal iron elements 15, said seats comprising respective recesses 14 made in a single body with the central body 4.
With the above disclosed arrangement, a set number of cross rod elements or rebars 3 are preliminarily arranged in the caisson, each said rebar having three blocks 2 bearing by their feet 12 on the caisson bottom.
After having properly located the cross rebars, the trestles or struts 20 are engaged, in particular by coupling the first base iron element 20A in the seats defined by said feet 11 and laterally arranged, as schematically shown, in figure 3.
Then, the rod elements or rebars 15 are located, to be properly arranged on the recesses 14 and then, by a rotary operation, the second base iron element 20B is coupled in the latching body 10, while locking the trestle or strut 20 which will be thus restrained by a stable coupling of the base iron elements 20A and 20B.
The above disclosed toothed feet 11 will provide a plurality of seats allowing to use trestles or struts having widths within a given width range.
With the above disclosed arrangement, the clamping devices or elements, formed by the block 2, allows to hold in a raised condition the trestles or struts with respect to the casting bench, thereby allowing the concrete material to fully encompass and cover the two iron elements arranged at the bottom of the trestle.
Moreover, said trestles or struts are held in a spaced condition from one another at accurate and even distances.
Likewise are held in their preset positions the longitudinal iron elements to be arranged inside the trestles, since they are located on the recesses 14 allowing them to be spaced by an accurate and even spacing, to provide in turn an accurate and even thickness of concrete covering the iron elements.
From the above disclosure it should be apparent that the invention fully achieves the intended aim and objects.
In fact, the invention provides a clamping device or element for clamping iron trestles or struts to be arranged in concrete floors or walls, thereby providing an optimum location of said trestles, while simplifying all the casting operations and providing a high quality end product.
The invention, as disclosed, is susceptible to several modifications and variations, all of which will come within the scope of the invention.
Moreover, all the constructional details can be replaced by other technically equivalent elements.
In practicing the invention, the used materials, as well as the contingent size and shapes can be any, according to requirements.

Claims

A clamping device for clamping iron trestles or struts to be arranged in concrete floor slabs or walls, characterized in that said clamping device comprises at least a block rigidly associated with a cross rebar, defining a plurality of latching bodies which can be removably coupled to the base iron elements of the trestles, on said block at least a seat for housing at least a longitudinal rod element being provided.
A clamping device, according to the preceding claim, characterized in that said clamping device comprises, on each cross rod element or rebar, a central block and two further blocks arranged at end portions of said rebar.
A clamping device, according to claim 1, characterized in that said block comprises an elongated central body intercoupling said latching bodies arranged at the ends of said block.
A clamping device, according to claim 1, characterized in that said latching bodies define, on a top thereof, a plurality of toothed foot elements for defining corresponding coupling seats with trestle base iron elements, arranged substantially perpendicular to said rebar, said latching body defining, at bottom end portions thereof, a plurality of bearing feet for providing a set spacing from the bottom of the caisson.
A clamping device, according to claim 1, characterized in that said block comprises a plurality of recesses defining a plurality of corresponding housing seats for housing longitudinal rebars.
A clamping device, according to claim 1, characterized in that a base iron element or rebar is preliminarily clamped in one of said latching bodies and, after having engaged said longitudinal rebars in said seats, the other base iron element or rebar is coupled in the other latching body.
A clamping device for clamping iron trestles or struts to be arranged in concrete floor slabs and walls, according to the preceding claims, and substantially as broadly disclosed and illustrated for the intended aim and objects.