EP2886746A1 - Device for inserting blocks made of compressible material in a building opening - Google Patents

Abstract

The present application relates to a device (10) for inserting blocks of compressible material into a building opening, having a flat bottom plate (12), a pair of guide walls (14, 16) spaced at a distance from one another perpendicular to the bottom plate (12). and their top edges (38) facing away from the bottom plate (12) extend obliquely in their longitudinal direction to the bottom plate (12), and a pair of expanding wedges (18, 20) with wedge-shaped plates (24), each with a leading edge (26). on one of the upper edges (38) of the guide walls (14,16) are guided displaceably.

Description

The present invention relates to a device for inserting blocks of compressible material into a building opening.

Wall openings in buildings for carrying electrical cables or pipes of building services are usually closed by blocks of insulating or fire protection materials. These may consist of mineral wool, glass wool, polyurethane (PU) or other flexible plastic foams, for example. The compressible blocks are individually juxtaposed and superimposed in the opening, so that it is walled up in a sense by the blocks. So that the filling material finds hold in the opening, the blocks are first compressed under a certain form and then inserted. When inserted, they strive back to their original shape, so that they can no longer move against each other. It is therefore not necessary to fix the blocks by additional means.

The pre-compression of the blocks, however, presents problems in practical handling. In particular, during installation, it proves difficult to simultaneously compress and deploy the blocks. Often, two people are needed to complete this process. This leads to an increased time and expense. Particular difficulties arise when the opening to be closed is not accessible from both sides. Apply pressure as evenly as possible to the block to be inserted so that it slides smoothly into the opening can. This is hardly possible with the usual tools and tools that are available on a construction site.

One attempt to solve the problem of precompression is to vacuumize the blocks in a film and thus provide them in already precompressed form. These vacuum blocks can be easily inserted into the opening. If the film is subsequently injured, air enters the vacuum pack and the block expands. However, such vacuum-sealed closure blocks are comparatively complicated to produce and therefore expensive.

Object of the present invention is therefore to provide relatively simple and inexpensive means for simplifying the installation of blocks of compressible material in building openings available, which allow in particular an individual to perform the installation process without much difficulty.

This object is achieved by a device having the features of claim 1.

The inventive device for inserting blocks of compressible material into a building opening, comprises a flat bottom plate, a pair of guide walls which are perpendicular to each other at a distance from the bottom plate and their upper edge facing away from the bottom plate in its longitudinal direction obliquely to the bottom plate, and a A pair of expanding wedges with wedge-shaped plates, which are each guided displaceably with a leading edge on one of the upper edges of the guide walls.

By means of this device, it is possible to increase the height of the opening for a block to be inserted by compressing the blocks in the row below. For this purpose, the bottom plate is inserted with its guide walls in the opening so that it covers the underlying blocks. Subsequently, the expanding wedges are placed with the tip forward on the guide walls and slid on this sliding into the opening. By pressure against the wedge back the expanding wedges between the guide walls of the bottom plate and the top or top of the opening are pressed, the lower edges of the wedges push the guide walls with the bottom plate down and thus compress the underlying blocks. With the other Insertion movement is thus widened the opening channel for receiving a further block between the guide walls in height. This block can thus be pushed between the guide walls on the bottom plate, which forms the bottom of the receiving space for the other block. After the block has been inserted, the expansion wedges, the guide walls and the bottom plate are pulled out of the bricked wall opening, so that the compressed blocks can expand again and pinch the block just inserted. This results in a strong bond between the blocks.

The heights of the guide walls and the wedge ridges are suitably adapted to the height of the blocks to be inserted, so that when inserting the expanding wedges results in a sufficiently high opening for receiving a block. In addition, the expansion wedges should have a sufficient length, since a relatively flat wedge shape with a small wedge angle allows a smooth insertion with little effort. The length of the expanding wedges can be considerably greater than that of the bottom plate.

According to a preferred embodiment of the present invention, the upper edges of the guide walls are inclined in accordance with the wedge angle of the expanding wedges, so that the upper edge of the spreading ledges guided on the guide walls runs parallel to the base plate and faces away from the respective leading edge. The guide walls thus taper in height, but in the opposite direction to the direction of taper of the expanding wedges, so that a uniform pressure on the blocks located under the bottom plate can be exercised by the parallel arrangement of the bottom plate and top edge of the expanding wedges.

According to a further preferred embodiment of the invention, the guide walls are arranged in particular transversely to its longitudinal extent displaceable on the bottom plate. The guide walls may for example be formed as separate parts that are loose on the bottom plate. This offers the advantage that each individual guide wall can be pulled out between the blocks separately from the remaining parts of the device.

The guide walls preferably have stops on their lower edges for limiting their displacement in their longitudinal extension direction. Thus, the position of the guide walls in the insertion direction of the expanding wedges is fixed. It also prevents that the guide walls can move during the insertion of the expanding wedges even in the opening into it. Further, the stopper serves as a handle for easier extraction of the guide walls after installation of the blocks.

Further preferably, at the upper edges of the wedge-shaped plates of the expanding wedges projecting transverse webs are provided on both sides, so that the expanding wedges have a substantially T-shaped cross-section. This embodiment has the advantage that the expanding wedge is significantly widened at its upper wedge flank and thus can pass on the pressure during insertion flat to the ceiling of the opening.

According to a further preferred embodiment, the bottom plate on its the wedge back of the expanding wedges associated edge on a downwardly bent flange. This flange serves as a stop for limiting the insertion depth of the bottom plate and facilitates the extraction of the bottom plate after insertion of the block.

The bottom plate, the guide walls and / or the expanding wedges can be made of flat and / or angled sheet metal blanks. Individual parts of the bottom plate, the guide walls or expanding wedges can also be welded or soldered together, such as the transverse webs of the expanding wedges to the upper edges of the wedge-shaped plates.

Preferably, the expansion wedges are guided on the guide walls according to the tongue and groove principle, so that the expanding wedges and the guide walls parallel to each other substantially in a plane perpendicular to the bottom plate. For this purpose, either the leading edges of the wedge-shaped plates of the expanding wedges are each provided with a guide groove in which the guide walls are guided with their upper edges, or the upper edges of the guide walls are provided with a guide groove in which the wedge-shaped plates of the expanding wedges are guided with their leading edges.

• Fig. 1 ist eine schematische, perspektivische Gesamtdarstellung einer Ausführungsform der erfindungsgemäßen Vorrichtung zum Einsetzen von Blöcken aus komprimierbarem Material in eine Gebäudeöffnung;
• Fig. 2 ist eine Seitenansicht der in Fig. 1 dargestellten Vorrichtung;
• Fig. 3 ist eine Draufsicht auf die Vorrichtung aus den Fig. 1 und 2;
• Fig. 4 ist ein schematischer Querschnitt durch die Vorrichtung aus Fig. 2 entlang der Schnittebene A-A;
• Fig. 5 ist ein schematischer Querschnitt durch eine andere Ausführungsform der erfindungsgemäßen Vorrichtung entlang der Schnittebene A-A aus Fig. 2;
• Fig. 6 ist eine Seitenansicht einer einzelnen Führungswand, die Bestandteil der Vorrichtung aus den Fig. 1 bis 5 ist; und
• Fig. 7 ist eine perspektivische Ansicht der Seitenwand aus Fig. 6.

In the following, a preferred embodiment of the present invention will be explained in more detail with reference to the drawing.

• Fig. 1 is a schematic, overall perspective view of an embodiment of the inventive device for inserting blocks of compressible material into a building opening;
• Fig. 2 is a side view of in Fig. 1 illustrated device;
• Fig. 3 is a plan view of the device from the Fig. 1 and 2 ;
• Fig. 4 is a schematic cross section through the device Fig. 2 along the cutting plane AA;
• Fig. 5 is a schematic cross-section through another embodiment of the device according to the invention along the cutting plane AA Fig. 2 ;
• Fig. 6 is a side view of a single guide wall, which is part of the device of the Fig. 1 to 5 is; and
• Fig. 7 is a perspective view of the side wall Fig. 6 ,

In the Fig. 1 illustrated device 10 is used for inserting blocks of compressible material in a building opening, for example, blocks of an insulating or fire protection material, such as mineral wool, glass wool, polyurethane (PU) or other soft foam. The blocks themselves are not shown in the figures. The device 10 comprises a rectangular bottom plate 12, on which perpendicular to it guide walls 14, 16 protrude, which are parallel to each other at a distance and extend partially over the bottom plate 12 away. The guide walls 14, 16, whose shape is to be explained in more detail below, are freely displaceable on the base plate 12. They can be moved laterally relative to each other, so that their distance from one another is selectable. Both the bottom plate 12 and the guide walls 14, 16 are made of angled sheet metal blanks.

The apparatus 10 further includes a pair of expansion wedges 18, 20, each of which expanding wedge 18, 20 slidably extends along one of the guide walls 14, 16 over the bottom plate 12, such that its tip 22 extends beyond the bottom plate 12 protrudes. The length of the expanding wedges 18, 20 is dimensioned considerably larger than the length of the bottom plate 12 in this direction.

Each of the expanding wedges 18, 20 comprises a wedge-shaped, in use perpendicular to the bottom plate 12 standing plate 24 (see Fig. 2 ), whose lower edge represents a leading edge 26, which is a lower wedge flank with a guide groove 26 '(see Fig. 4 ), in which the upper edge 38 of the corresponding guide wall 14, 16 is guided. At the upper edge 28 of the wedge plate 24 of the expanding wedge 18, 20 by horizontal transverse webs 30, 32 widened, so that the expanding wedges 18, 20 have a total of T-shaped cross section, as in 4 and 5 can be seen.

The wedge-shaped plate 24 sits with its guide groove 26 'on the upper edge 38 of the corresponding guide wall 14, 16 and is slidably guided on this. The terms "top" and "bottom" and "horizontal" and "vertical" refer here and in the entire description and in the claims to the position of use of the device 10 shown in the drawing in a building or wall opening, not shown.

At the rear ends of the expanding wedges 18, 20, which form the wedge ridges 34, the transverse webs 30, 32 are angled vertically downwards. The wedge ridges 34 are used to insert the expanding wedges 18, 20 in the wall opening.

The side walls 14, 16 themselves have no uniform height, but are in accordance with the 6 and 7 also wedge-shaped. The obliquely to the bottom plate extending upper edges 38 of the guide walls 14, 16 are slightly inclined in the direction of the wedge back 34 corresponding to the wedge angle of the expanding wedges 18, 20, so that the height of the guide walls 14, 16 decreases to the wedge ridge 34 back. The guide walls 14, 16 and the expanding wedges 18, 20 thus taper in opposite directions, ie the wedge tips 22 are on the side of the highest points 40 on the front ends of the guide walls 14, 16.

At their opposite rear ends, the guide walls 14, 16 downwardly angled flanges 42, which have a horizontally resting on the bottom plate 12 legs and a vertical leg 46. While the horizontal leg 44 for a secure state of the guide wall 14, 16 on the bottom plate 12th ensures the vertical leg 46 serves as a stop for limiting the displacement of the guide wall 14, 16 in its longitudinal direction to the wedge tip 22 back. Each of the guide walls 14, 16 is thus freely displaceable on the bottom plate 12, with the restriction that the respective guide wall 14, 16 can be pushed onto the bottom plate 12 only up to the stop 46.

As in Fig. 4 shown, the guide edges 26 of the wedge-shaped plates 24 of the expanding wedges 18, 20 are provided with a guide groove 26 ', in which the guide walls 14,16 are guided with their upper edges 38. For this purpose, the wedge-shaped plates 24 can be produced, for example, from three sheet metals 24 ', 24 "that are connected to one another, in particular welded or soldered in. The middle plate 24" has a smaller height than the two outer plates 24'. The guide wall 14 can then be inserted into the guide groove 26 'thus formed.

According to another embodiment of the invention, in Fig. 5 is shown, the upper edges 38 of the guide walls 14,16 are provided in a corresponding manner with a guide groove 38 ', in which the wedge-shaped plates 24 of the expanding wedges 18, 20 are guided with their leading edges.

The guide of the expanding wedges on the guide walls can also be done in any other way, which ensures that the expanding wedges and the guide walls are held in a plane parallel to each other to exert a compression pressure on blocks to be compressed.

The mode of operation of the device 10 shown here will be described below. The device 10 is used in parts in a building opening, which is already partially, but not completely closed by block-shaped blocks of compressible insulating material. For example, the blocks are stacked in rows while the last top row area is still open.

In this situation, the bottom plate 12 is placed on the top row of blocks already in use and inserted into the opening until the downwardly angled flange 48 of the bottom plate 12 abuts the blocks already in use. Subsequently, the guide walls 14, 16 are placed at a distance next to each other perpendicular to the bottom plate 12 and inserted until the rear stops 46 on both sides of the flange 48 of the bottom plate 12 abut on the already inserted blocks. Finally, the expanding wedges 18, 20 are placed with their guide grooves 26 'on the guide walls 14, 16. In this position, the expanding wedges 18, 20 on the guide walls 14, 16 slidably move, while the side walls of the guide grooves 26 'perpendicular to both sides of the guide walls 14, 16 abut.

The expanding wedges 18, 20 can first be pushed so far into the opening until the tops 28 of the transverse webs 30, 32 abut the ceiling of the opening. This situation is in Fig. 2 shown. The guide walls 14, 16 and the widths of the expanding wedges 18, 20 may be dimensioned so that in this situation the expanding wedges 18, 20 abut with their tops 28 on the ceiling of the opening. When the wedges 18, 20 are pushed in by pressure from their wedge-back 34, the bottom plate 12 is pressed down evenly and compresses the underlying elastic blocks, so that the opening is widened.

In the expanded opening, a further block of compressible material between the expanding wedges 18, 20 and the guide walls 14, 16 are then inserted until it closes in the direction of insertion with the other blocks. Subsequently, the expanding wedges 18, 20, the guide walls 14, 16 and the bottom plate 12 can be completely pulled out of the opening. The blocks below the bottom plate 12 may then expand again to form a strong bond between these blocks and the newly inserted block.

This process can be repeated on an adjacent block in the same row, until the last block that completely closes the opening.

Claims (8)

Apparatus (10) for inserting blocks of compressible material into a building opening, comprising a flat bottom plate (12), a pair of guide walls (14,16) spaced apart from one another perpendicularly to the bottom plate (12) and the ones thereof Bottom plate (12) facing away from upper edges (38) in its longitudinal direction obliquely to the bottom plate (12), and a pair of expanding wedges (18, 20) with wedge-shaped plates (24), each with a leading edge (26) on one of the upper edges ( 38) of the guide walls (14,16) are guided displaceably. Apparatus according to claim 1, characterized in that the upper edges (38) of the guide walls (14,16) according to the wedge angle of the expanding wedges (18, 20) are inclined so that the side facing away from the respective leading edge upper edge of the guided on the guide walls expanding wedges (18,20) parallel to the bottom plate (12). Apparatus according to claim 1 or 2, characterized in that the guide walls (14,16) are arranged in particular transversely to its longitudinal extent displaceable on the bottom plate (12). Apparatus according to claim 3, characterized in that the guide walls (14,16) have at their lower edges stops (46) for limiting their displacement in their longitudinal direction. Device according to one of the preceding claims, characterized in that on the upper edges (28) of the wedge-shaped plates (24) of the expanding wedges (18,20) on both sides projecting transverse webs (30,32) are provided, so that the expanding wedges (14, 16) have a substantially T-shaped cross-section. Device according to one of the preceding claims, characterized in that the bottom plate (12) on its the wedge back (34) of the expanding wedges (18,20) associated edge has a downwardly angled flange (48). Device according to one of the preceding claims, characterized in that the guide edges (26) of the wedge-shaped plates (24) of the expanding wedges (18, 20) with a Guide groove (26 ') are provided, in which the guide walls (14,16) are guided with their upper edges (38). Device according to one of claims 1 to 6, characterized in that the upper edges (38) of the guide walls (14,16) are provided with a guide groove in which the wedge-shaped plates (24) of the expanding wedges (18, 20) with their leading edges ( 26) are guided.

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