DE29903396U1 - Table head - Google Patents

Description

Franz Pfleger *: ' : : :* : AktfeCizdichen 29812254,5

80687 Munich *

TABLE HEAD

Description

The invention relates to a table head with the aid of which, on the construction site, local formwork for ceilings and joist floors, made of profiled wood H-beams and individual supports made of steel or aluminum, can be manufactured using the conventional formwork method and implemented as a larger table unit.

Previously, the local ceiling formwork was made up of H-beams and individual supports with cross heads, beam forks, four-way heads or support heads, which were loosely attached to the individual supports. After each use, the formwork had to be dismantled into all its individual parts, cleaned, transported and reassembled.

This method requires many work steps, is very time-consuming, leads to the loss of individual parts, and damage to the H-beams and formwork. Even when the same operation is repeated, it is difficult to achieve cost reductions using the conventional method.

In contrast, pure formwork systems require a high level of planning effort, additional ground and dismantling costs, or pre-assembly in the factory including transport of elements, all of which can only be economically justified if they are used at least 8 to 10 times on a construction site.

The invention is therefore based on the idea of designing a table head in such a way that it can be formed locally on the one hand and moved as a table unit on the other.

This object is achieved according to the inventor in that, as stated in claim 1, a tensioning device presses the formwork support grid together with the table head to form a node point, in a tension- and compression-resistant manner.

According to the inventor, this is possible during the formwork process or subsequently on the finished slab table unit covered with formwork.

The table head is first attached to the support plate of the single support with screws or using a wedge device.

For a locally manufactured table unit with a rectangular or square floor plan, at least 4 nodes are required.

According to the inventor, bracing and anti-tilt protection, with normally at least 2 supports per table unit in the upper support layer on which the formwork is attached, is achieved in that, as stated in claim 1, the height of the fork frames on the table head ensures fork support of the formwork supports even in the assembled state.

According to the invention, an additional contribution is made to accident prevention.

For all temporary steel-wood connections, such as those required for these and similar construction site elements, costly and complex marking work and fastenings by drilling for screws and bolts, and thus damage and weakening of the wooden formwork parts, are unavoidable.

Even with the often necessary changes on the construction site, the conversion or addition can hardly be carried out by the construction site personnel or the time, technical and economic effort required is disproportionately high.

According to the inventor, this is solved by arranging claws on the contact surfaces of the steel table head and the clamping units, according to claim 1, which press into the H-formwork supports when clamped and thus create a temporary and firm hold at the node.

An embodiment of the table head according to the invention is explained using the drawings as an example. They show:

Figure 1 a perspective top view of the table head without H-beam
Figure 2 shows a cross-section with H-beam and clamping units
Figure 3 shows a longitudinal section with H-beam and clamping units

Figure 4 Alternative; Table head with threaded rod frames and clamping profile - cross section
Figure 5 Alternative; table head, longitudinal section

As shown in the drawing, the table head consists of a base plate (1) and holes (3) for fastening to the head plate (14) of the single support (15) using screws.

Alternatively, this fastening can also be carried out using a wedge device that is arranged on the underside of the base plate (1). According to claim 1, four, preferably angle iron, fork frames (2) are arranged on the base plate (1) in such a way that in the lower layer a double yoke made of H-beams (11) and crossing at right angles at the top, according to the invention the height of the fork frames (2) accommodates the formwork support (12) also still mounted in the fork frames (2).

According to the invention, claws (4) are arranged on the base plate (1) in such a way that they can press into the H-beams (11).

According to the invention, a clamping unit according to claim 1 consists of two flat iron brackets (5) which are bent inwards towards each other in a hook-like manner at the top and have claws (6) arranged at their upper end so that they grip the lower chord of the formwork support (12), at the lower end of the brackets (5) which are also bent inwards and are provided with a square cutout (8) vertically one above the other. A centering screw (7) with a square attachment (8) is led downwards through these.

When used on the construction site, the screw (7) is passed through a hole (9) in the base plate (1) and pre-tensioning is preferably created between the formwork support (12) and the base plate (1) using a manually operated wing nut (10).

According to the invention, the fork frames (2) can alternatively consist of threaded rods (16) welded to the base plate (1) according to claim 5. Two threaded rods (16) could then preferably be attached to both sides of the formwork support (12) with an angle iron clamping profile (17) with two holes (18) to the diameter and distance of the threaded rods (16), whereby the horizontal leg part of the angle iron clamping profile (17) with claws (19) forms the contact and pressure surface to the upper edge of the lower flange of the formwork support (12).

and the vertical leg part with claws (19) forms ^the contact and pressure surface to the upper edge of the double yoke supports (11). According to the invention, the threaded rods (16) thus have two functions, namely as a fork frame (16) and as a tension rod (16).

The support grid (11+12) consisting of double yoke (11) and formwork support (12) is preferably temporarily connected to the base plate (1) using a manually operated wing nut (20) via the angle iron clamping profiles (17) on the threaded rods (16).

Claims (6)

s R Protection claims 1. Table head for connecting H-formwork support grids (11+12) crossing essentially at right angles , characterized in that the table head consists of a base plate (1) with holes (3) as well as claws (4) and welded angle profile fork frames (2) which are arranged in the plan in the corners of the crossing H-beams (11+12). and with clamping devices (5+7+10) on the right and left of the double yoke support (11), which clamps the support grid (11+12) to the base plate (1). 2. Table head according to claim 1, characterized in that the height of the fork frames (2) on the base plate (1) extends into the region of the upper formwork support (12). 3. Table head according to claim 1, characterized in that a clamping device consists of two C-shaped flat iron brackets (5) of a clamping screw (7) with a square neck, which penetrate the two flat iron brackets (5) lying one above the other vertically at the bottom with a square cutout (8), as well as the base plate (1) with a bore (9) which forms the abutment for the wing nut (10). 4. Table head according to claim 1 , characterized in that the base plate (1) and flat iron brackets (5) are provided with claws (4+6) on the contact surfaces of the H-beams (11+12). 5. Table head according to claim 1 , characterized in that the fork frames (2) alternatively consist of threaded rods (16). 6. Table head according to claim 5 , characterized in that the clamping device consists of an angle iron (17) with claws (4+19) on the contact surfaces of the H-beams (11+12) and bores (18) at the distance of the threaded rods (16), with wing nuts (20) attached to the threaded rods (16).