CN116044044A - A prefabricated building wall - Google Patents

Abstract

The invention discloses an assembled building wall, which comprises a first building wall, wherein a second building wall is propped against the side wall of the first building wall, the first building wall and the second building wall are connected through a plurality of horizontal limiting devices, each horizontal limiting device comprises a mounting cavity which is arranged at the end part of the first building wall, a through groove is formed in the inner wall of one side of the mounting cavity in a penetrating manner, a cylindrical block is fixed at the end part of the second building wall, and a limiting groove is formed in the bottom of the cylindrical block. The advantages are that: through setting up horizontal stop device, can realize the downshifting and the reset of stopper at the cylindricality piece along logical groove horizontal slip in-process to usable stopper realizes the spacing to the cylindricality piece, combines the kicking block of spacing inslot portion, can realize stretching out the ejecting of piece and offset with the installation intracavity wall at the stopper in-process that resets, realizes the spacing to the cylindricality piece, can realize the installation of horizontal direction building wall fast, can effectively increase the installation effectiveness of wall body.

Description

A prefabricated building wall

technical field

The invention relates to the technical field of prefabricated buildings, in particular to a prefabricated building wall.

Background technique

Green building refers to a high-quality building that saves resources, protects the environment, reduces pollution, provides people with healthy, applicable and efficient use of space, and maximizes the harmonious coexistence of man and nature within the entire life cycle. Prefabricated buildings are Refers to the transfer of a large number of on-site operations in the traditional construction method to the factory, where the building components and accessories (such as floor slabs, wall panels, stairs, balconies, etc.) are processed and manufactured in the factory, and transported to the construction site, through reliable connection Buildings assembled and installed on site; however, most of the existing prefabricated buildings are only fixed by tools such as expansion bolts, screws, and anchors during assembly. Although the structure is firm, the prefabricated buildings are often used temporarily. After use, it needs to be disassembled, and most of the disassembly will be inconvenient to disassemble. It needs to be disassembled by destroying it. It cannot guarantee the integrity of the assembled wall and subsequent reuse, which will cause waste of materials and cannot be carried out. Reuse does not conform to the concept of green and energy-saving buildings. Therefore, we propose a prefabricated building wall that is easy to disassemble and reusable.

Contents of the invention

The purpose of the present invention is to solve the problem that the prior art is not convenient to disassemble and reuse, and propose a prefabricated building wall.

In order to achieve the above object, the present invention adopts the following technical solution: a prefabricated building wall, including a first building wall, the side wall of the first building wall is offset by a second building wall, the first The building wall and the second building wall are connected by a plurality of horizontal limiting devices. The horizontal limiting device includes an installation cavity opened at the end of the first building wall. slot, the end of the second building wall is fixed with a columnar block, the bottom of the columnar block is provided with a limiting slot, the inner top of the installation cavity is provided with a vertical slot, and the inner wall of the vertical slot The limit block is slidably connected, the bottom of the limit block is fixedly connected with the inner bottom of the vertical groove through the support spring, the inner bottom of the vertical groove is fixed with a guide rod, and the bottom of the limit block is opened in the chute , the guide rod is slidingly connected with the inner wall of the chute;

The ends of the columnar blocks are fixed with rectangular blocks, each of the columnar blocks is provided with a push-out limiting device, and the upper end of the first building wall abuts against a third building wall. The upper end of the first building wall and the bottom of the third building wall are jointly provided with a limit locking device, and the ends of the first building wall, the second building wall and the third building wall are all provided with pushing and separating device.

In the above-mentioned prefabricated building wall, the columnar block is correspondingly offset against the inner wall of the through groove, the limiting groove is corresponding to the limiting block, and both ends of the limiting block are inclined. The rectangular block corresponds to the oblique end of the limiting block, and the shapes of the first building wall, the second building wall and the third building wall are consistent.

In the above-mentioned prefabricated building wall, the ejection limiting device includes a top block that is penetratingly and slidably connected to the top of the limit groove, the upper end of the columnar block is provided with a storage tank, and the top block penetrates To the inside of the storage tank and against the inner wall of one side of the storage tank, the inner wall of the storage tank is slidably connected with a protruding block, one end of the protruding block is fixed to the end of the top block, and the other end of the protruding block is connected to the installation corresponding to the cavity wall.

In the above-mentioned prefabricated building wall, the end of the top block is fixed with a horizontal plate, and the horizontal plate is against the inner wall of the limiting groove. The inner top is connected, the top block is a trapezoidal block, and the bottom oblique end of the top block is against the upper oblique end of the limit block.

In the aforementioned prefabricated building wall, the position-limiting locking device includes a block fixed to the upper end of the first building wall, and the side wall of the third building wall is provided with a card slot. The blocks correspond to the card slots, the upper end of the first building wall is provided with a storage slot, the inner wall of the storage slot is slidably connected with a horizontal limiting plate, the upper end of the horizontal limiting plate is fixed with a mounting rod, and the horizontal The bottom of the limiting plate is fixedly connected with the inner bottom of the storage tank by a vertical spring.

In the above-mentioned prefabricated building wall, the side wall of the third building wall is provided with a horizontal groove, the inner wall of the horizontal groove is rotatably connected with fixing bolts, and the bottom of the third building wall is provided with a The installation groove, the end of the fixing bolt penetrates into the installation groove, and the upper end of the installation rod penetrates above the first building wall and corresponds to the installation groove.

In the above-mentioned prefabricated building wall, the clamping block is a wedge-shaped block, the clamping groove is a wedge-shaped groove, the side wall of the installation rod is provided with a threaded groove, and the fixing bolt corresponds to the threaded groove. The inner wall at one end of the installation groove is oblique, and the installation rod corresponds to the oblique end of the installation groove.

In the above-mentioned prefabricated building wall, the pushing and separating device includes two horizontal extruding plates slidingly connected to the inner walls of the two installation cavities, and the upper end of each of the horizontal extruding plates passes through a plurality of return springs It is connected with the inner top of the installation cavity, the two horizontal extruding plates are against the upper end of the top block, the ends of the two horizontal extruding plates are fixedly connected by connecting rods, and the inner bottom of the storage tank runs through the sliding connection There is a push rod, and the bottom of the push rod penetrates into the installation cavity and is fixed with the top of the horizontal extrusion plate.

Compared with the prior art, the present invention has the advantages of:

1. In the present invention, by setting the horizontal limiting device, the downward movement and reset of the limiting block can be realized during the horizontal sliding process of the cylindrical block along the through groove, so that the limiting block can be used to limit the cylindrical block. Combined with the top block inside the limit slot, during the reset process of the limit block, the protruding block can be pushed out and offset against the inner wall of the installation cavity, so as to realize the limit of the cylindrical block, so that the horizontal direction building can be quickly realized The installation of the wall can effectively increase the installation efficiency of the wall.

2. In the present invention, by setting the limit locking device on the first building wall, through the wedge-shaped block and slot and the fixing bolt connected with the installation rod, it is possible to facilitate the vertical movement of the upper and lower two building walls. Stable installation, which can facilitate the assembly and combination of multi-storey buildings.

3. In the present invention, by setting the horizontal limit device and the limit locking device inside the building wall, the contact between the internal structure and the outside air can be reduced after the building wall is installed, so that the prefabricated building wall can be avoided. The corrosion damage of the internal connection structure can effectively increase the service life of the internal parts of the building wall. Combined with the connection structure that is easy to install and disassemble, it can facilitate the repeated use of the building wall, effectively reduce the waste of resources, and facilitate energy-saving and environmentally friendly use.

Description of drawings

Fig. 1 is the structural representation of a kind of prefabricated building wall that the present invention proposes;

Fig. 2 is a main sectional view of a prefabricated building wall proposed by the present invention;

Fig. 3 is a side view of a prefabricated building wall proposed by the present invention;

Fig. 4 is a structural schematic diagram of the installation cavity part in the installation state in a prefabricated building wall proposed by the present invention;

Fig. 5 is an enlarged view of a columnar block part of a prefabricated building wall proposed by the present invention;

Fig. 6 is a structural schematic diagram of a position-limiting and locking device part of a prefabricated building wall proposed by the present invention.

In the figure: 1 first building wall, 2 second building wall, 3 column block, 4 installation cavity, 5 through slot, 6 limit slot, 7 vertical slot, 8 limit block, 9 support spring, 10 Guide rod, 11 chute, 12 rectangular block, 13 storage slot, 14 top block, 15 horizontal plate, 16 connection spring, 17 extension block, 18 third building wall, 19 block, 20 card slot, 21 storage slot , 22 horizontal limit plates, 23 vertical springs, 24 mounting rods, 25 horizontal grooves, 26 fixing bolts, 27 mounting grooves, 28 thread grooves, 29 horizontal extrusion plates, 30 return springs, 31 connecting rods, 32 ejector rods.

Detailed ways

The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

Referring to Figures 1-6, a prefabricated building wall includes a first building wall 1, the side wall of the first building wall 1 is offset by a second building wall 2, the first building wall 1 and the second building wall The wall 2 is connected by a plurality of horizontal limiting devices. The horizontal limiting device includes an installation cavity 4 opened at the end of the first building wall 1. A through groove 5 is opened through the inner wall of one side of the installation cavity 4. The second building wall The end of the body 2 is fixed with a cylindrical block 3, the bottom of the cylindrical block 3 is provided with a limiting groove 6, and the inner top of the installation cavity 4 is provided with a vertical groove 7, and the inner wall of the vertical groove 7 is slidingly connected with the limiting block 8, When the limit block 8 is reset, the oblique end enters the inside of the limit groove 6 completely, and the vertical end is offset against the end of the limit groove 6, and the separation of the limit block 8 and the limit groove 6 cannot be realized by pulling the cylindrical block 3, thereby Can realize the spacing to cylindrical block 3, the bottom of spacing block 8 is fixedly connected with the inner bottom of vertical groove 7 by support spring 9, and the inner bottom of vertical groove 7 is fixed with guide bar 10, and the bottom of spacing block 8 The bottom is opened in the chute 11, and the guide rod 10 is slidably connected with the inner wall of the chute 11; the end of the cylindrical block 3 is fixed with a rectangular block 12, and the inside of each cylindrical block 3 is provided with a ejection limit device. The upper end of the building wall 1 is offset by a third building wall 18, and the upper end of the first building wall 1 and the bottom of the third building wall 18 are jointly provided with a limit locking device. The first building wall 1 and the second building wall The ends of the wall body 2 and the third building wall body 18 are all provided with a push separation device; the cylindrical block 3 is correspondingly offset against the inner wall of the through groove 5, the limit groove 6 corresponds to the limit block 8, and the two ends of the limit block 8 All are oblique, the rectangular block 12 corresponds to the oblique end of the limit block 8, the first building wall 1, the second building wall 2 and the third building wall 18 have the same shape, by setting a horizontal limit device, by The positions of the quasi-cylindrical block 3 and the through groove 5 move the building wall horizontally, so that the limiting block 8 can be squeezed and reset, so that the limiting block 8 can be used to realize the positioning of the limiting groove 6 in the cylindrical block 3. The position is limited, so that the installation of the building wall can be quickly realized, and the installation efficiency can be effectively increased.

The ejection limiting device includes a top block 14 that is slidably connected to the top of the limit groove 6. The upper end of the cylindrical block 3 is provided with a storage tank 13. The top block 14 penetrates into the storage tank 13 and is connected to the inner wall of the storage tank 13. To counteract, the inner wall of the storage tank 13 is slidably connected with a protruding block 17, one end of the protruding block 17 is fixed to the end of the top block 14, and the other end of the protruding block 17 is corresponding to the inner wall of the installation cavity 4; the end of the top block 14 is fixed There is a horizontal plate 15, the horizontal plate 15 is against the inner wall of the limiting groove 6, the upper end of the limiting groove 6 is connected with the inner top of the limiting groove 6 through a connecting spring 16, the top block 14 is a trapezoidal block, and the bottom oblique end of the top block 14 It is offset against the oblique end of the upper end of the limit block 8. By setting the ejection limit device, the ejection of the protruding block 17 can be realized during the reset process of the limit block 8 and it can be offset against the inner wall of the installation cavity 4, so that the column can be aligned. The limiting effect of the shape block 3 is better, which is convenient for fast and stable installation and use of building walls in the horizontal direction.

The limit locking device comprises a block 19 fixed to the upper end of the first building wall 1, and the side wall of the third building wall 18 is provided with a card slot 20, and the block 19 corresponds to the card slot 20, and the first building wall 1 The upper end of the upper end is provided with a storage tank 21, the inner wall of the storage tank 21 is slidingly connected with a horizontal limit plate 22, the upper end of the horizontal limit plate 22 is fixed with a mounting rod 24, and the bottom of the horizontal limit plate 22 is connected to the storage tank by a vertical spring 23. 21 The inner bottom is fixedly connected; the side wall of the third building wall 18 is provided with a horizontal groove 25, and the inner wall of the horizontal groove 25 is rotatably connected with a fixing bolt 26, and the bottom of the third building wall 18 is provided with a mounting groove 27, and the fixing bolt 26 The end of the installation rod 24 penetrates to the inside of the installation groove 27, and the upper end of the installation rod 24 penetrates to the top of the first building wall 1 and corresponds to the inside of the installation groove 27; there are 19 wedge-shaped blocks, the groove 20 is a wedge-shaped groove, and the installation rod 24 A threaded groove 28 is opened through the side wall of the side wall, and the fixing bolt 26 corresponds to the threaded groove 28. The inner wall at one end of the installation groove 27 is oblique, and the installation rod 24 corresponds to the oblique end of the installation groove 27. By setting a limit locking device, it can It is convenient to realize the stable installation of the building wall in the vertical direction, thereby facilitating the assembly and use of buildings with different heights.

The pushing and separating device includes two horizontal extruding plates 29 that are slidingly connected to the inner walls of the two mounting chambers 4, and the upper end of each horizontal extruding plate 29 is connected with the inner top of the mounting chamber 4 through a plurality of return springs 30. The extruding plates 29 are all against the upper ends of the top block 14, and the ends of the two horizontal extruding plates 29 are fixedly connected by connecting rods 31. The inner bottom of the storage tank 21 runs through and is slidably connected with a push rod 32, and the bottom of the push rod 32 penetrates to The inside of the installation cavity 4 is fixed with the upper end of the horizontal extruding plate 29. By setting the push separation device, after the upper building wall is separated, the ejector rod 32 can be pressed to realize the top block 14, the extension block 17 and the limit block 8. The downward movement of the building wall can facilitate the separation of the building wall in the horizontal direction, the disassembly and use of the building wall, and the mutual separation of the building wall can be realized without destroying the building wall, which is convenient for the reuse of the building wall. Effectively reduce the waste of resources, and facilitate the use of energy saving and environmental protection.

In the present invention, in the installation process of the assembled wall, firstly, it is necessary to correspond to the through groove 5 of the side wall of the first building wall 1 in the horizontal direction and the columnar block 3 of the side wall of the second building wall 2. The second building wall 2, so that the column block 3 at the end of the second building wall 2 enters the interior of the installation cavity 4 along the through groove 5, and at the same time, the approach of the first building wall 1 and the second building wall 2 can be realized , when the cylindrical block 3 enters the interior of the installation cavity 4, the rectangular block 12 at the end of the cylindrical block 3 will abut against the oblique end surface of the limit block 8, so that the horizontally movable cylindrical block 3 and rectangular Block 12 pushes down, and realizes the vertical sliding of stopper 8 along guide bar 10 and vertical groove 7, and then by the end of columnar block 3, stopper 8 can be pushed to the below of columnar block 3, simultaneously Full compression of the support spring 9 can be achieved, and after the end of the first building wall 1 and the end of the second building wall 2 are offset, the limiting groove 6 at the bottom of the columnar block 3 just corresponds to the limiting block 8, At this time, under the action of the support spring 9 in the compressed state, the upward movement and reset of the stop block 8 along the guide rod 10 and the inner wall of the vertical groove 7 can be quickly realized, and then the stop block 8 can enter the inside of the stop slot 6 , so that the limit block 8 can be used to limit the position of the column block 3, and then the horizontal connection between the first building wall 1 and the second building wall 2 can be realized;

And when the limit block 8 moves up into the limit groove 6, the oblique end of the limit block 8 will first contact the oblique end of the trapezoidal top block 14 at the bottom, so that under the push of the limit block 8, the The top block 14 and the horizontal plate 15 move up vertically along the inside of the limiting groove 6, thereby realizing the compression of the connecting spring 16, and at the same time, during the upward movement of the top block 14, the extension block 17 will be driven along the storage tank 13 The inside slides out, so that the end of the protruding block 17 can be offset against the inner wall of the installation cavity 4, so that the protruding block 17 can be used to realize the stable limit of the cylindrical block 3 and the inside of the installation cavity 4, combined with the limit block 8 Corresponding to the limit groove 6 at the bottom of the cylindrical block 3, the fast and stable connection between the first building wall 1 and the second building wall 2 can be quickly realized during the insertion of the cylindrical block 3 into the installation cavity 4, which can make the building The assembly of the wall is more convenient and the installation efficiency is higher;

And after the transfer of the bottom building wall is completed, by pressing the installation rod 24 on the upper end of the first building wall 1, the installation rod 24 drives the horizontal limit plate 22 to slide down along the storage groove 21 inner wall, and the vertical spring can be vertically mounted simultaneously. 23, after the installation rod 24 completely crosses the upper end of the first building wall 1, the third building wall 18 is moved to the top of the first building wall 1, and the wedge-shaped locking block 19 and the slot 20 are aligned. , the third building wall 18 is clamped on the first building wall 1, after the third building wall 18 completely corresponds to the first building wall 1, the vertical spring 23 in the compressed state will drive the horizontal limit The position plate 22 moves upwards so that the horizontal limit plate 22 is against the inner top of the storage tank 21. At this time, by turning the fixing bolt 26 at the end of the third building wall 18, the end of the fixing bolt 26 is screwed to the end of the installation rod 24. The inside of the threaded groove 28 of the upper part, so that the horizontal limit plate 22 with the bottom and the top of the storage tank 21 can be used closely and the installation rod 24 whose end is connected with the fixing bolt 26 can strengthen the first building wall 1 and the third building. The stability of the connection of the wall 18 facilitates the stable use of the prefabricated building wall;

And in the building wall dismounting process, at first need to rotate the fixed bolt 26 inside the horizontal groove 25, make the fixed bolt 26 separate from the installation rod 24, now by pulling the third building wall 18, the installation rod 24 and the installation can be realized. The inner wall of the inclined end of the groove 27 is offset and gradually moves downward, and at the same time, the separation of the locking groove 20 at the bottom of the third building wall 18 and the upper end block 19 of the first building wall 1 can be realized, and after the disassembly of the upper building wall is completed, By pressing the ejector rod 32 inside the storage tank 21, the horizontal extruding plate 29 can move down and slide along the inside of the installation cavity 4, and the two horizontal extruding plates 29 can move down simultaneously under the connection of the connecting rod 31 , after the bottom of the horizontal extrusion plate 29 abuts against the upper ends of the top block 14 and the extension block 17, it will push the top block 14 and the extension block 17 to move down, so that the separation of the extension block 17 from the inner wall of the installation cavity 4 can be realized, and at the same time, it can be used The top block 14 realizes the extrusion of the limit block 8, so that the limit block 8 moves downward. After the cylindrical block 3 corresponds to the oblique end of the limit block 8, it can be realized by moving the second building wall 2. The downward movement of the limit block 8 and the extraction of the cylindrical block 3 can make the disassembly work of the prefabricated building wall more convenient, and facilitate the disassembly and use of the prefabricated wall;

Moreover, the connecting parts inside the building wall are all set inside the wall. After the building wall is installed, the contact between the internal structure and the outside can be effectively reduced, thereby avoiding corrosion damage to the prefabricated building wall, thereby effectively increasing the building capacity. The service life of the internal parts of the wall, combined with the connection structure that is easy to install and disassemble, can facilitate the reuse of building walls, effectively reduce the waste of resources, and facilitate energy-saving and environmentally friendly use.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (8)

1. The utility model provides an assembled building wall, includes first building wall (1), its characterized in that, the lateral wall of first building wall (1) offsets has second building wall (2), first building wall (1) and second building wall (2) are connected through a plurality of horizontal stop device, horizontal stop device is including setting up installation cavity (4) in first building wall (1) tip, through groove (5) have been seted up in the one side inner wall of installation cavity (4), the tip of second building wall (2) is fixed with cylindricality piece (3), spacing groove (6) have been seted up to the bottom of cylindricality piece (3), vertical groove (7) have been seted up at the interior top of installation cavity (4), the inner wall sliding connection of vertical groove (7) has stopper (8), the bottom of stopper (8) is through supporting spring (9) and the interior bottom fixed connection of vertical groove (7), the interior bottom of vertical groove (7) is fixed with guide bar (10), the bottom of stopper (8) is set up in spout (11), guide bar (11) sliding connection with spout (11);

the end fixing rectangular block (12) of cylindricality piece (3), every the inside of cylindricality piece (3) all is provided with ejecting stop device, the upper end of first building wall body (1) offsets has third building wall body (18), the upper end of first building wall body (1) and the bottom of third building wall body (18) are provided with spacing locking device jointly, the tip of first building wall body (1), second building wall body (2) and third building wall body (18) all is provided with promotes separator.

2. The fabricated building wall according to claim 1, wherein the cylindrical blocks (3) are correspondingly abutted against the inner walls of the through grooves (5), the limiting grooves (6) are correspondingly provided with limiting blocks (8), two ends of each limiting block (8) are inclined, the rectangular blocks (12) are correspondingly provided with inclined ends of each limiting block (8), and the shapes of the first building wall (1), the second building wall (2) and the third building wall (18) are consistent.

3. The fabricated building wall according to claim 1, wherein the ejection limiting device comprises a top block (14) penetrating through the top of the limiting groove (6), the upper end of the cylindrical block (3) is provided with a storage groove (13), the top block (14) penetrates through the storage groove (13) and abuts against the inner wall of one side of the storage groove (13), the inner wall of the storage groove (13) is slidably connected with an extension block (17), one end of the extension block (17) is fixed with the end of the top block (14), and the other end of the extension block (17) corresponds to the inner wall of the installation cavity (4).

4. The assembled building wall according to claim 3, wherein a horizontal plate (15) is fixed at the end of the top block (14), the horizontal plate (15) abuts against the inner wall of the limit groove (6), the upper end of the limit groove (6) is connected with the inner top of the limit groove (6) through a connecting spring (16), the top block (14) is a trapezoid block, and the bottom inclined end of the top block (14) abuts against the upper inclined end of the limit block (8).

5. The assembled building wall according to claim 3, wherein the limiting and locking device comprises a clamping block (19) fixed at the upper end of the first building wall (1), a clamping groove (20) is formed in the side wall of the third building wall (18), the clamping block (19) corresponds to the clamping groove (20), a storage groove (21) is formed in the upper end of the first building wall (1), a horizontal limiting plate (22) is slidably connected to the inner wall of the storage groove (21), a mounting rod (24) is fixed at the upper end of the horizontal limiting plate (22), and the bottom of the horizontal limiting plate (22) is fixedly connected with the inner bottom of the storage groove (21) through a vertical spring (23).

6. The fabricated building wall according to claim 5, wherein the side wall of the third building wall (18) is provided with a horizontal groove (25), the inner wall of the horizontal groove (25) is rotatably connected with a fixing bolt (26), the bottom of the third building wall (18) is provided with a mounting groove (27), the end of the fixing bolt (26) penetrates into the mounting groove (27), and the upper end of the mounting rod (24) penetrates into the upper portion of the first building wall (1) and corresponds to the mounting groove (27).

7. The assembled building wall according to claim 6, wherein the clamping block (19) is a wedge-shaped block, the clamping groove (20) is a wedge-shaped groove, the side wall of the mounting rod (24) is provided with a threaded groove (28) in a penetrating manner, the fixing bolt (26) corresponds to the threaded groove (28), the inner wall at one end of the mounting groove (27) is inclined, and the mounting rod (24) corresponds to the inclined end of the mounting groove (27).

8. The fabricated building wall according to claim 5, wherein the pushing and separating device comprises two horizontal extrusion plates (29) slidably connected with the inner walls of the two installation cavities (4), the upper ends of each horizontal extrusion plate (29) are connected with the inner tops of the installation cavities (4) through a plurality of return springs (30), the two horizontal extrusion plates (29) are abutted against the upper ends of the jacking blocks (14), the end parts of the two horizontal extrusion plates (29) are fixedly connected through connecting rods (31), ejector rods (32) penetrate through the inner bottoms of the storage grooves (21) and are slidably connected, and the bottoms of the ejector rods (32) penetrate through the installation cavities (4) and are fixed with the upper ends of the horizontal extrusion plates (29).

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