JPH0133624B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a formwork panel having, at least in its edge portion, a plurality of edge webs projecting perpendicularly to the surface of the formwork panel and forming end faces of the formwork panel. the webs have connection points for securing the formwork panel to an adjacent formwork panel, and the formwork panel is at least partially tapered to facilitate removal of the formwork. Relates to forms of the type consisting of a plurality of constructed formwork panel sections. A formwork panel of this type is known from German Patent No. 1 264 735.
In this case, two wedge-shaped formwork sections are provided which in use constitute a rectangular formwork panel. In this case, by moving one of the formwork sections in its longitudinal direction, the formwork, in particular the inner formwork, is loosened when the formwork is removed. However, this formwork panel only works if there is sufficient space in the longitudinal direction of the formwork to allow movement of one of the formwork panel sections. Moreover, in this case, even though the formwork panel portion is configured in a wedge shape, it is difficult to remove the formwork. This is because the longitudinal movement of the formwork panel parts must actually take place on the concrete pouring plane, and the corresponding adhesion forces between the concrete and the wedge-shaped formwork panel parts create a great resistance. It is.

The object of the present invention is to improve the formwork panel mentioned at the beginning, so that it can be peeled off from the concrete side without any problems and can be easily removed from the shaft or similar.
Formwork removal between the two projecting walls is to be easily carried out without requiring sliding of the formwork panel sections on the concreting plane.

The object of the present invention is to provide a formwork panel of the type mentioned at the outset, in which the joints of the formwork panel parts are arranged in a plane which, viewed in cross section, is oblique to the formwork panel surface and the outer edge web. This problem was solved by being formed from a single member. With this configuration, one of the formwork panel parts has a tapered cross section as a whole, and when the formwork is removed, one of the formwork panel parts has a concreted surface. This allowed sufficient space to remove the remaining formwork panels. Therefore, even if there are restrictions due to ceilings or the like directly connected to this formwork panel, the formwork can be removed more easily than before.

According to an advantageous embodiment of the invention, the formwork panel surfaces of the formwork panel parts are aligned in one plane, and the fixing connections provided on the planar parts are aligned with one another in the fixing position. It has come to exist in In this case, this flat part can have holes for bayonet pins or the like. Advantageously, the shape and size of the hole provided in this flat element corresponds to the shape and size of the hole provided in the edge web of the formwork panel part.

Manufacture of the formwork panels is facilitated if the seams run parallel to the edges of the formwork panels. Although it is conceivable that this seam be inclined with respect to the above-mentioned edge so that the formwork panel section has the above-mentioned tapered cross section, it is also formed tapered in the longitudinal direction. This is not necessary, since the stripping movement of the tapered, widened formwork panel section takes place in the direction away from the concreted surface.

Each formwork panel section can have different widths. Further, the planar member of one formwork panel portion preferably forms an obtuse angle with respect to the formwork panel surface that connects to the edge of the formwork panel portion on the concrete side. With this structure, the wider formwork panel section expands in a tapered manner in the direction away from the formwork panel surface when viewed in cross section, and this wider formwork panel section first It must be removed from the formwork. The seams formed in this case are correspondingly larger. In particular, the planar members of one formwork panel section form an angle of 135° to the formwork panel plane, and the planar members of the other formwork panel section form an angle of 45° to the formwork panel plane of the formwork panel section. Advantageously, they form an angle of .degree. This construction provides, on the one hand, an advantageous degree of taper in the part of the formwork panel that is to be unformed first, and also because the angle of 45° is often very easy to measure and implement, so that the manufacturing It also becomes easier. Furthermore, it becomes relatively easy to bring the fixed portion close to the plane member.

Advantageously, the planar part of the narrow formwork part or parts of the narrow formwork section extends from the formwork panel surface to the outer edge web. This construction gives the formwork panel section in question a triangular cross section. As a result, the wider formwork section can make maximum use of the entire width of the formwork panel in order to obtain the largest possible formwork removal interval.

The overall width of the formwork panels in the working position corresponds to grid dimensions customary in the building industry and is advantageously approximately 25 cm. This allows the formwork panels according to the invention to be well adapted to the grid size ratios common in the building industry.

The invention will now be explained with reference to the illustrated embodiment.

When removing the formwork 1 from between two protruding walls 2, such as shafts or the like, difficulties may arise in removing the formwork due to the pressures created during concrete pouring.

In the first embodiment shown, therefore, the formwork panel 3 consists of two formwork panel parts 4, 5, which are formed partially tapered in the manner described below and which are assembled into a rectangular shape. It is provided within the formwork 1. This formwork panel 3 has an edge web 6 at its edge that projects at right angles to the surface to be concreted and forms both end faces.
This edge web 6 has connection points for fixing the formwork panel 3 to an adjacent formwork panel 7. This structure is shown in detail in FIG. 2, which shows that this connection point is located in the hole 8 for the plug pin 9.
It is formed as.

According to the invention, the seam 10 of the two formwork panel parts is formed by two planar elements 12 which, seen in cross section, are arranged obliquely to the formwork panel surface 11 and the outer edge web 6. A planar member 12 is provided, which in the illustrated embodiment is made of flat iron. Also, in the drawings, at least the formwork panel portion 4
The planar member 12 is provided continuously over its entire length. Of course, it is advantageous if this structure is also applied to the flat part 12 of the other formwork panel part 5. However, in some cases such planar elements are only partially provided, so that even though they provide a place for the connection point 13, both formwork panel parts 4 and 5
is sufficient to combine. When the formwork panel surfaces 11 of both formwork panel sections 4 and 5 are aligned in the same plane, the planar member 12 forms a seam 10.
The connection points 13 located at are aligned with one another and brought into a fixed position. In the illustrated embodiment, this fixing point 13 is also provided with a hole for a plug-in pin 9. The shape and size of the holes in the planar element 12 correspond to the shape and size of the holes in the edge web 6. This makes it possible to use the same plug-in pin 9 for both types of fastening. This construction facilitates parts stocking.

Formwork removal is started by first removing the formwork panel part 4 in the direction of arrow 1 (FIGS. 2 and 3) after the relevant fixing member has been released, so that the formwork panel 3 is removed. If the seam 10 runs parallel to the edge and edge web of the formwork panel, removal of the formwork is made very easy.

A keyhole-shaped hole 8 or 13 is provided in the flat part 12, as well as in the edge web 6, for the plug-in pin 9. In this case, the plug-in pin 9 has a transverse pin 14 on the one hand and a counterstop 15 on the other hand for holding together the planar parts and the edge web which come into contact with each other. After the insertion pin 9 has been inserted, it can be opened into the fixed position shown. In this case, therefore, the insertion pins 9, which are already provided in many such types of formwork, can be used to insert the formwork panel 3 and into both formwork panel parts 4, 5 of the formwork panel. It can be used for mutual fixation.

In the illustrated embodiment, the two forming the formwork panel 3 are
the two formwork panel sections 4 and 5 have different widths;
Flat member 12 of the wider formwork panel section 4
and the formwork panel surface 11 connected to the concrete-side edge 16 of the formwork panel portion 4 form an obtuse angle. This obtuse angle is 135° in the illustrated embodiment. Correspondingly, the planar member 12 of the narrow formwork panel section 5 and its formwork panel surface 11 form an angle of 45°. As a result, in the working position, both planar parts 12 abut each other, with which the two-part formwork panel is reinforced and at the same time given the desired position to the formwork panel. Contrary to the previously described configuration, the formwork panel part 4 with the obtusely arranged planar part 12 to be unformed first has the same width as the other formwork panel part 5. It is also possible for the formwork panel section 5 to be narrower or narrower than the formwork panel section 5.

As can be seen from FIGS. 2 and 3, the planar element 12 of the formwork panel part 5 extends from the formwork panel surface 11 approximately to the outer edge 17 of the edge web 6 belonging to the formwork panel part 5. There is. The formwork panel part 5 thereby has a triangular cross section. As a result, this formwork panel part 5 on the one hand has a relatively high stiffness and, by being reinforced, at least compensates for the weakening that the seam 10 causes in the formwork panel 3. The fact that the wide formwork panel part 4 can be given as wide a width as possible also results in a correspondingly large formwork release seam after this formwork panel part 4 has been removed. .

In the embodiment shown, the formwork 11 of both formwork panel parts 4 and 5 is made of sheet metal. As a result, it is possible to bond well to the planar member 12 by, for example, welding.

As can be seen in FIGS. 1 and 2, the formwork tie rods 18 each extend within the edge web 6 of the formwork panel 3, thereby allowing the tie nuts 1
9 is adapted to partially act on the formwork panel 3. When removing the formwork, first the post nut 19 is released, and then all the insertion pins 9 provided at the diagonal seam 10 are released. The bayonet pins 9 in the edge webs 6 of the wide formwork panel sections 4 are then removed. The formwork panel part 4 is then removed in the direction of the arrow 1, i.e. in a direction somewhat oblique to the concreted surface; this removal movement is caused by the degree to which the formwork part 4 tapers in its cross-sectional direction. This is facilitated by having the following. After this formwork part 4 is removed (see the formwork panel part indicated by the dashed line in FIG. 2), the formwork panel 1
A mold removal gap is formed which is large enough to allow the remaining mold part 5 to be removed from the mold without any problems. Longitudinal sliding along the concreted surface is avoided.

The formwork panel shown in the embodiment of FIG. 2, as mentioned above, consists of two formwork panel parts 4 and 5 which, in the position of use, are releasably connected to each other at a diagonal seam 10. Furthermore, the fourth
The figure shows a variant embodiment of the invention which has its own significance. In this drawing, parts that correspond to FIG. 2 are designated using the same reference numerals for ease of understanding, even if some changes have been made.

The formwork panel 3 in the embodiment of FIG. 4 consists of three formwork panel parts 4, 5 and 5a, and in cross-section, in order to releasably connect the three formwork panels 4, 5 and 5a. Look, formwork panel side 1
It has two seams 10 extending diagonally from 1 and in directions away from each other. In the illustrated embodiment,
Both seams 10 are arranged symmetrically about a center line M extending perpendicularly to the form panel surface 11. The removal of the formwork is thereby carried out exactly at right angles to the concrete pouring surface in the direction of arrow 2.

The main advantage of the embodiment according to FIG. 4, which has a central formwork panel part 4 which corresponds approximately to an isosceles trapezoid in cross-section, is that the edge web 6, especially in the case of shaft formwork, is
This occurs when the tightening positions are not arranged symmetrically when viewed in the longitudinal direction of the formwork panel.

[Brief explanation of drawings]

The drawings show several embodiments of the invention, FIG. 1 being a schematic plan view of the formwork in the area of two projecting walls, and FIG. FIG. 3 is an enlarged cross-sectional view of a formwork panel of the present invention consisting of two formwork panel sections tapered to form a formwork panel. FIG. 4 is a diagram corresponding to FIG. 2 showing a variant embodiment of the invention; FIG. 1...Formwork, 2...Wall, 3, 7...Formwork panel, 4,
5, 5a...Formwork panel part, 6...Edge web, 8...
Hole, 9... Insert pin, 10... Seam, 11... Formwork panel surface, 12... Plane member, 13... Connection location, 1
4...Horizontal pin, 15...Opposing stopper, 16, 17...
Edge, 18...Formwork tie rod, 19...Chiyou nut.

Claims (1)

[Scope of Claims] 1 A formwork panel having a plurality of edge webs projecting at least at an edge portion at right angles to the surface of the formwork panel and forming an end face of the formwork panel, comprising:
these webs have connection points for fixing the formwork panel to an adjacent formwork panel;
In a type of formwork panel consisting of a plurality of formwork panel parts tapered at least in part to facilitate removal from the formwork, the seam of formwork panel parts 4, 5, 5a; 10
However, when viewed in cross section, the planar member 1 is arranged obliquely to the formwork panel surface 11 and the outer edge web 6.
A formwork panel characterized by being formed by 2. 2. A patent claim in which when the formwork panel surfaces of the formwork panel parts 4, 5, 5a are aligned with each other in the same plane, the connection points provided on the planar member 12 are aligned with each other and are in fixed positions. The formwork panel described in item 1. 3. Formwork panel according to claim 1, in which the planar member 12 has holes for the insertion pins 9. 4. Formwork panel according to claim 3, wherein the shape and size of the holes provided in the planar part 12 correspond to the shape and size of the holes provided in the edge web. 5. Formwork panel according to claim 4, wherein the seam 10 of the formwork panel 3 runs parallel to the edge of the formwork panel 3 in the longitudinal direction. 6. The planar member 12 has a keyhole-shaped hole for the fixing insertion pin 9, and the insertion pin 9 has a horizontal pin on one side and a corresponding stopper 15 on the opposite side, and the insertion pin 9 has a corresponding stopper 15 on the opposite side. Formwork panel according to claim 1, in which the insertion pin (9) is pivotable to a fixed position after being inserted. 7 flat member 12 of one formwork panel section 4;
The form panel surface 11 connected to the edge 16 on the concrete side of the planar member 12 forms an obtuse angle.
A formwork panel according to claim 1. 8. The planar member 12 of one formwork panel section 4 and the formwork panel surface 11 form an angle of 135°, and the planar member 12 of the formwork panel section 5 connected to the formwork panel section 4 and the formwork panel surface 11 form an angle of 135°. A formwork panel according to claim 1, wherein the formwork panel face (11) forms an angle of 45°. 9 Formwork panel portion 4 constituting the formwork panel,
2. A formwork panel according to claim 1, wherein 5 and 5a have different widths. 10. The planar member 12 of the narrower formwork panel part extends from the formwork panel surface 11 of the formwork panel part approximately to the outer edge 17 of the edge web 6 of the formwork panel part; A formwork panel according to claim 1. 11. The formwork panel according to claim 1, wherein the formwork panel surface 11 of the formwork panel portions 4, 5, 5a is made of a thin plate. 12 At least one formwork panel section 4 or 5
A formwork panel according to claim 1, wherein the planar member 12 is provided continuously over the entire length of the formwork panel section 4 or 5. 13 Formwork panel parts 4, 5, 5 in working position
Formwork panel according to claim 1, characterized in that the overall width a corresponds to grid size ratios customary in the building industry and is preferably 25 cm. 14 Formwork panel parts 4, 5 with two formwork panels
Formwork panel according to claim 1, characterized in that in the position of use the two formwork panel parts (4, 5) are releasably connected at a diagonal seam (10). 15 Formwork panel section 4 with three formwork panels,
5, 5a, consisting of three formwork panel sections 4,
5, 5a, it has two seams 10 extending obliquely from the formwork panel surface and away from each other, viewed in cross section;
A formwork panel according to claim 1. 16. The formwork panel according to claim 15, wherein the two seams 10 are arranged symmetrically with respect to a center line M extending perpendicularly to the formwork panel surface.