CN215520541U

CN215520541U - Passive window PVC-U pre-installation auxiliary frame structure for building

Info

Publication number: CN215520541U
Application number: CN202121337007.4U
Authority: CN
Inventors: 王玉亮; 王龙洋; 郝东岭; 李先久; 苏耀宗; 王万里
Original assignee: Henan Keraoen Door And Window Co ltd
Current assignee: Henan Keraoen Door And Window Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-01-14
Anticipated expiration: 2031-06-16

Abstract

The utility model discloses a passive window rabbet pre-mounting structure for a building, which solves the problems of high heat transfer coefficient and poor sealing effect of a passive building window in the prior art. The utility model comprises a pre-installed auxiliary frame, wherein a main frame is arranged on the inner periphery of the pre-installed auxiliary frame, a heightening frame is arranged between the lower part of the pre-installed auxiliary frame and the main frame, a back plate is arranged between the pre-installed auxiliary frame and the heightening frame and between the pre-installed auxiliary frame and the main frame, and the pre-installed auxiliary frame is connected to a wall body; sealing structures are arranged between the pre-installation auxiliary frame and the wall body, between the pre-installation auxiliary frame and the heightening frame and between the pre-installation auxiliary frame and the main frame; the pre-installation attaches and all is equipped with the steel lining in frame and the bed hedgehopping frame, and attaches the frame in the pre-installation and be multicavity type section bar with bed hedgehopping frame. The pre-installed auxiliary frame adopted by the utility model is a PVC-U pre-installed auxiliary frame; the steel lining improves the installation strength of the passive window; the multi-cavity design reduces the heat transfer coefficient of the rabbet part, and the sealing element of each gap improves the water tightness and the air tightness of the whole window.

Description

Passive window PVC-U pre-installation auxiliary frame structure for building

Technical Field

The utility model relates to the technical field of doors and windows, in particular to a passive PVC-U pre-installed auxiliary frame for a building window.

Background

In a passive building, a wall body can be adhered with heat-insulating materials in various ways to achieve a very low heat transfer coefficient, but a window part is a very weak link in the passive building due to the fact that the window part needs to be transparent and opened. The glass can reduce the heat transfer coefficient by increasing the number of glass layers, filling inert gas in a hollow layer, using Low-E glass, using vacuum glass and the like, but the connecting part between the window and the wall body needs to be connected with a wall body bearing part in order to ensure the strength, the bearing part is often a part with a high heat transfer coefficient, the condition that a heat transfer temperature curve is deviated towards the indoor space is easily caused, the problem is solved by adopting an external mounting mode, and the mounting cost and the difficulty of the mode are high.

The external hanging type mounting and installing process is complex and high in cost, but the heat transfer coefficient of the whole window can be effectively reduced, and the external hanging type mounting and installing device can be applied to passive buildings with high requirements on the heat transfer coefficient.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the background art, the utility model provides a passive building window PVC-U pre-installed auxiliary frame, and solves the problems of high heat transfer coefficient and poor sealing effect of the passive building window in the prior art.

The technical scheme of the utility model is realized as follows: a passive window PVC-U pre-installation auxiliary frame structure for a building comprises a pre-installation auxiliary frame, wherein a main frame is arranged on the inner periphery of the pre-installation auxiliary frame, a heightening frame is arranged between the lower part of the pre-installation auxiliary frame and the main frame, a back plate is arranged between the pre-installation auxiliary frame and the heightening frame and between the pre-installation auxiliary frame and the main frame, and the pre-installation auxiliary frame is connected to a wall body; sealing structures are arranged between the pre-installation auxiliary frame and the wall body, between the pre-installation auxiliary frame and the heightening frame and between the pre-installation auxiliary frame and the main frame; the pre-installation attaches and all is equipped with the steel lining in frame and the bed hedgehopping frame, and attaches the frame in the pre-installation and be multicavity type section bar with bed hedgehopping frame.

Preferably, the sealing structure comprises a foaming agent and a pre-pressing sealing strip, and the foaming agent is arranged between the pre-installation auxiliary frame and the wall body, between the pre-installation auxiliary frame and the heightening frame, and between the pre-installation auxiliary frame and the main frame; the pre-mounting auxiliary frame, the heightening frame and the back plate form a cavity with an opening at the upper part, a graphite polystyrene board is arranged in the cavity, and a pre-pressing sealing strip is arranged between the graphite polystyrene board and the pre-mounting auxiliary frame.

Preferably, a waterproof steam-proof film is arranged between the back plate close to the inner side and the foaming agent, the waterproof steam-proof film extends to a position between the wall body and a plastering layer on the wall body, and sealing glue is arranged at the joint of the plastering layer and the heightening frame and at the joint of the plastering layer and the main frame.

Preferably, the pre-installed auxiliary frame is a PVC-U pre-installed auxiliary frame, the cross section of the pre-installed auxiliary frame is L-shaped, the vertical plate of the pre-installed auxiliary frame faces the outer side of the wall body, and the steel lining is arranged inside the horizontal frame of the pre-installed auxiliary frame.

Preferably, an outer wall external thermal insulation piece is arranged on the outer side surface of the wall body, and waterproof and breathable films are arranged between the outer wall external thermal insulation piece and the wall body and between the outer wall external thermal insulation piece and the pre-installation auxiliary frame; a plastering layer is arranged on each wall body and the wall surface of the outer wall external heat insulation part, a flashing board inclined outwards is arranged on the upper part of the inner periphery of the plastering layer of the outer wall external heat insulation part, and the flashing board is connected with the main frame in a sealing way; the lower part of the inner periphery of the plastering layer of the external thermal insulation part of the external wall is provided with a water dripping line, and the flashing board and the plastering layer of the external thermal insulation part of the external wall and the flashing board and the heightening part are in sealing connection through a pre-pressing sealing strip. The main frame is detachably connected to the pre-mounting auxiliary frame and the heightening frame through self-tapping and self-drilling screws.

Preferably, an annular groove is formed in the wall body, the pre-installation auxiliary frame is arranged in the annular groove of the wall body, and the pre-installation auxiliary frame is fixed on the wall body through expansion screws.

Preferably, the lower part of the pre-mounting auxiliary frame is connected with a mounting bracket through self-tapping and self-drilling screws, the mounting bracket is fixed on the wall body through expansion screws, and a base plate is arranged between the mounting bracket and the wall body.

The utility model has the beneficial effects that: the pre-installed auxiliary frame adopted by the utility model is a PVC-U pre-installed auxiliary frame, and the corner part can be prevented from generating a gap through welding; the steel lining in the auxiliary frame is pre-installed, so that the installation strength of the passive window is improved; the pre-installed auxiliary frame is designed into a plurality of cavities isolated by steel liners, so that the heat transfer coefficient of the tongue-and-groove part is reduced; the back plate effectively reduces the pasting difficulty of the waterproof vapor-barrier film; meanwhile, the prepressing expansion sealing belt or the graphite polystyrene board at the lower part can be prevented from being pushed away from the corresponding position in the foaming process of the polyurethane foaming agent; the water tightness and air tightness of the whole window can be effectively improved by processing the gaps between the wall and the outer wall external heat insulation layer, the heightening frame and the apron flashing, the apron flashing and the outer wall external heat insulation layer, the wall and the back plate and the three-layer glass and the window sash.

Drawings

In order to illustrate the embodiments of the utility model more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic structural view of the present invention in example 1;

FIG. 2 is a schematic structural diagram of the left and right windows of the present invention;

FIG. 3 is a schematic view of the upper window structure of the present invention;

FIG. 4 is a schematic structural view of the present invention in example 2;

in the figure: 1-wall body, 2-foaming agent, 3-graphene benzene board, 4-waterproof vapor-barrier film, 5-sealant, 6-back board, 7-expansion screw, 8-self-tapping self-drilling screw, 9-glass edge filling piece, 10-three glass, 11-external wall external thermal insulation piece, 12-plastering layer, 13-flashing board, 14-waterproof breathable film, 15-pre-installation auxiliary frame, 16-pre-pressing sealing strip, 17-main frame, 18-diamond mesh, 19-heightening frame, 20-steel liner, 21-drip line, 23-installation support and 24-backing plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1 to 3, in example 1, a passive PVC-U pre-installed auxiliary frame structure for architectural window includes a pre-installed auxiliary frame 15, a main frame 17 is arranged on the inner periphery of the pre-installation auxiliary frame 15, a heightening frame 19 is arranged between the lower part of the pre-installation auxiliary frame 15 and the main frame 17, a back plate 6 is arranged between the pre-installation auxiliary frame 15 and the heightening frame 19 and between the pre-installation auxiliary frame 15 and the main frame 17, the back plate 6 is divided into a front L-shaped plate and a rear L-shaped plate, two L-shaped plates are arranged between the pre-installation auxiliary frame 15 and the heightening frame 19, a back plate 6 is arranged between the pre-installation auxiliary frame 15 and the main frame 17 and close to the inner side of the wall body 1, a passive window is generally designed with a back rib, so as to facilitate the subsequent installation of the heightening frame 19 and accessories, but the adhesion of the waterproof and steam-proof film in the subsequent room is difficult due to the uneven structure, the back plate 6 does not influence the installation of the function expansion accessory, and the pre-installation auxiliary frame 15 is connected to the wall body 1; sealing structures are arranged between the pre-installation auxiliary frame 15 and the wall body 1, between the pre-installation auxiliary frame 15 and the heightening frame 19 and between the pre-installation auxiliary frame 15 and the main frame 17, the sealing degree of the sealing structures to the passive building is further increased, and meanwhile, the heat transfer coefficient is also reduced. The cross construction is avoided, the construction period of the project is shortened, and the resource waste and hidden risks caused by the cross construction are reduced; steel linings 20 are arranged in the pre-installation auxiliary frame 15 and the heightening frame 19, and steel lining cavities are designed to enhance the installation strength of the follow-up passive window; the pre-installed auxiliary frame 15 and the heightening frame 19 are both multi-cavity profiles, and the inner part of the pre-installed auxiliary frame and the heightening frame are designed with multiple cavities, so that the heat transfer coefficient of the tongue-and-groove part is effectively reduced; meanwhile, cross construction can be avoided, the construction period of a project is shortened, and resource waste and hidden risks caused by the cross construction are reduced.

In the embodiment, the sealing structure comprises a foaming agent 2 and a pre-pressing sealing tape 16, wherein the foaming agent 2 is a polyurethane foaming agent, and the pre-pressing sealing tape 16 is a silicone sealing tape; foaming agents 2 are arranged between the pre-installation auxiliary frame 15 and the wall body 1, between the pre-installation auxiliary frame 15 and the heightening frame 19 and between the pre-installation auxiliary frame 15 and the main frame 17; the pre-mounting auxiliary frame 15, the heightening frame 19 and the back plate 6 form a chamber with an opening at the upper part, the graphite polystyrene board 3 is arranged in the chamber, and a pre-pressing sealing strip 16 is arranged between the graphite polystyrene board 3 and the pre-mounting auxiliary frame 15. A polyurethane foaming agent and a silicone sealant are injected between the main frame 17 and the heightening frame 19 to form a first seal, a silicone sealant is injected between the graphite polystyrene board 3 and the PVC-U pre-installation auxiliary frame and the heightening frame 19, a polyurethane foaming agent is injected between the PVC-U pre-installation auxiliary frame and the heightening frame 19 to form a second seal, and a polyurethane foaming agent is injected between the PVC-U pre-installation auxiliary frame and the wall body 1 to form a third seal.

In this embodiment, a waterproof vapor-barrier film 4 is disposed between the back panel 6 close to the inner side and the foaming agent 2, the waterproof vapor-barrier film 4 extends between the wall 1 and a plastering layer 12 on the wall 1, and a sealant 5 is disposed at a joint between the plastering layer 12 and the heightening frame 19 and at a joint between the plastering layer 12 and the main frame 19. The waterproof vapor-barrier film 4 prevents water vapor from entering the room, and the whole sealing performance is ensured; the sealant 5 further increases the sealing performance between the plastering layer 12 and the elevating frame 19 and between the plastering layer 12 and the main frame 19.

In this embodiment, the pre-mounting auxiliary frame 15 is a PVC-U pre-mounting auxiliary frame, the cross section of the pre-mounting auxiliary frame 15 is L-shaped, the vertical plate of the pre-mounting auxiliary frame 15 faces the outer side of the wall, and the steel lining 20 is disposed inside the horizontal frame of the pre-mounting auxiliary frame 15. The PVC-U type pre-installed auxiliary frame is adopted, the auxiliary frame can be produced in a welding mode, and no gap exists at the corner; the interior of the pre-installed auxiliary frame 15 is designed into a multi-cavity through a steel lining 20, so that the heat transfer coefficient at the rabbet is effectively reduced; the steel lining cavity simultaneously enhances the installation strength of the subsequent passive window.

In the embodiment, the outer side surface of the wall body 1 is provided with an outer wall external thermal insulation member 11, and the outer wall external thermal insulation member 11 of the wall body 1 is fitted with the shape of the pre-installed auxiliary frame 15 and can wrap the pre-installed auxiliary frame therein; between outer wall external thermal insulation spare 11 and the wall body 1 and outer wall external thermal insulation spare 11 and pre-installation attach and be equipped with waterproof ventilated membrane 14 between the frame 15, waterproof ventilated membrane 14's one end setting attaches the middle part that the frame 15 is close to the horizontal frame of outer wall external thermal insulation spare 11 in pre-installation, and the other end extends to outer wall external thermal insulation spare 11 and wall body 1 junction, and waterproof ventilated membrane 14 improves the leakproofness of window

In this embodiment, the wall 1 and the wall surface of the external thermal insulation member 11 are both provided with a plastering layer 12, the upper part of the inner periphery of the plastering layer 12 of the external thermal insulation member 11 is provided with a flashing 13 inclining outwards, and the flashing 13 is connected with the main frame 17 in a sealing manner. The lower part of the inner periphery of the plastering layer 12 of the external thermal insulation member 11 of the external wall is provided with a water dripping line 21, and the flashing 13 and the plastering layer 12 of the external thermal insulation member 11 of the external wall and the flashing 13 and the heightening member 19 are hermetically connected through a pre-pressing sealing strip 16. The flashing 13 and the drip line 21 are made of impermeable materials, the flashing 13 and the drip line 21 facilitate the flow of rainwater, and the pre-pressing sealing strip 16 has strong adhesion and can fixedly connect the flashing 13 to the wall 1.

In this embodiment, the main frame 17 is detachably connected to the pre-mount auxiliary frame 15 and the heightening frame 19 by self-tapping screws 8, and the self-tapping screws 8 are inserted into the steel bushings 20 on the pre-mount auxiliary frame 15 and the heightening frame 19. The upper frame, the left frame and the right frame of the main frame 17 are fixed on the wall body 1 through the pre-installed auxiliary frame 15 by self-tapping self-drilling screws 8, and the self-tapping self-drilling screws 8 further ensure the connection stability; the whole window is installed indoors, the risk of outdoor installation is reduced, the secondary window exchange can be realized through detachable connection, and the outer heat insulation part 11 of the outer wall is not damaged. The outer side of the inner periphery of the main frame 17 is connected with a diamond net 18, three glasses 10 are arranged on the window sash of the outer side of the inner periphery of the main frame 17, the three glasses 10 are three pieces of glass arranged in parallel, a vacuum layer is arranged between adjacent peeling-off pieces, and a glass edge filling piece 9 is arranged between the three glasses 10 and the window sash of the main frame 17. The arrangement of the diamond net 18 replaces the common window screen, so that the cleaning is convenient; the glass edge filling member 9 serves as a buffer, so that the sealing performance can be further ensured, and the glass is protected.

In this embodiment, an annular groove is formed in the wall 1, the pre-installation auxiliary frame 15 is arranged in the annular groove, the pre-installation auxiliary frame 15 is fixed on the wall 1 through an expansion screw 7, and the expansion screw 7 penetrates through a steel lining 20 arranged inside the pre-installation auxiliary frame 15 and is fixedly connected to the wall 1 through the expansion screw 7. The annular groove is provided with a tongue-and-groove, and the installation mode of tongue-and-groove installation is adopted, so that the heat transfer coefficient of the connecting part of the window and the wall body 1 can be effectively reduced, and the installation cost and difficulty are not increased. The annular groove forms tongue-and-groove type installation, and an externally-hung installation stress member and auxiliary materials are not needed in the installation, so that the installation cost and the installation time are reduced.

Specifically, the outdoor side of the concrete wall 1 needs to be reserved with a tongue-and-groove of 100x50mm, so as to ensure subsequent normal installation. And (3) mounting the PVC pre-mounting auxiliary frame which is penetrated with the steel lining 20 and welded into a reserved rabbet, pumping a polyurethane foaming agent 2 into the L-shaped mounting gap, plugging redundant foaming agent 2 into the mounting gap after the foaming agent 2 is dried completely, and sticking a waterproof breathable film 14 on the outdoor side according to the standard requirement.

The outer wall outer insulation layer 11 is adhered, and attention needs to be paid to the fact that the pre-installed auxiliary frame 15 needs to be completely covered by the outer wall outer insulation layer 11. When the lower side heightening frame 19 of the passive window is installed, a polyurethane foaming agent 2 and a sealant 5 are required to be sprayed on the corresponding position of the back. Sticking a prepressing sealing strip 16 on the inner side of a cantilever of a pre-installed auxiliary frame 15, sticking a waterproof vapor-barrier film 4 on a back plate 6 on the indoor side of a driven window according to requirements, sticking a graphite polystyrene board 3 on the outdoor side of a heightening frame 19 on the lower side of the driven window by using a sealant 5, and sticking a layer of sealant 5 on the outer side of the graphite polystyrene board 3.

And horizontally pushing the passive window to the pre-installation auxiliary frame 15, pumping a polyurethane foaming agent 3 into the installation gap, plugging redundant foaming agent 2 into the installation gap after the foaming agent 3 is dried completely, and sticking the waterproof and steam-insulating film 4 in place. A prepressing seal strip 16 is adhered to the back and the side of the apron 13 and then installed to the corresponding position. And constructing an indoor plastering layer 12 and the sealant 5 around the passive window.

As shown in fig. 2, the difference between the embodiment 2 and the embodiment 1 is that the lower part of the pre-installed auxiliary frame 15 is connected with an installation support 23 through a self-tapping self-drilling screw 8, the cross section of the installation support 23 is L-shaped, the self-tapping self-drilling screw 8 penetrates through a transverse plate of the installation support 23 from bottom to top and is connected to a steel lining 20 in the pre-installed auxiliary frame 15 for fixation, a vertical plate of the installation support 23 is fixed on the wall 1 through three parallel expansion screws 7, and a backing plate 24 is arranged between the installation support 23 and the wall 1; the backing plate 24 is a polyurethane backing plate, ensuring sealability. The pre-installation auxiliary frame 15 is directly fixed on the wall surface by adopting the installation support 23, the external thermal insulation member 11 of the external wall is cut according to the pre-installation auxiliary frame 15, and the waterproof breathable film 14 is pasted between the pre-installation auxiliary frame 15 and the external thermal insulation member 11 of the external wall until the connection extension part with the wall body 1.

When the installation is carried out, the installation bracket is fixed according to the preset size and position. And (3) mounting the PVC-U pre-mounting auxiliary frame which is threaded with the steel lining and welded on the fixed mounting bracket, and sticking a waterproof breathable film on the outdoor side according to the standard requirement. The other steps are the same as in embodiment 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a passive form window PVC-U for building installs in advance attaches frame structure which characterized in that: the prefabricated wall body is characterized by comprising a pre-installed auxiliary frame (15), wherein a main frame (17) is arranged on the inner periphery of the pre-installed auxiliary frame (15), a padding frame (19) is arranged between the lower part of the pre-installed auxiliary frame (15) and the main frame (17), a back plate (6) is arranged between the pre-installed auxiliary frame (15) and the padding frame (19) and between the pre-installed auxiliary frame (15) and the main frame (17), and the pre-installed auxiliary frame (15) is connected to the wall body (1); sealing structures are arranged between the pre-installation auxiliary frame (15) and the wall body (1), between the pre-installation auxiliary frame (15) and the heightening frame (19) and between the pre-installation auxiliary frame (15) and the main frame (17); the pre-installation auxiliary frame (15) and the heightening frame (19) are both internally provided with steel linings (20), and the pre-installation auxiliary frame (15) and the heightening frame (19) are both multi-cavity type profiles.

2. The passive architectural window PVC-U pre-mount auxiliary frame structure of claim 1, wherein: the sealing structure comprises a foaming agent (2) and a pre-pressing sealing strip (16), and the foaming agent (2) is arranged between the pre-installation auxiliary frame (15) and the wall body (1), between the pre-installation auxiliary frame (15) and the heightening frame (19), and between the pre-installation auxiliary frame (15) and the main frame (17); the pre-mounting auxiliary frame (15), the heightening frame (19) and the back plate (6) form a cavity with an opening at the upper part, a graphite polystyrene board (3) is arranged in the cavity, and a pre-pressing sealing strip (16) is arranged between the graphite polystyrene board (3) and the pre-mounting auxiliary frame (15).

3. The passive building window PVC-U pre-mounted auxiliary frame structure according to claim 2, wherein: a waterproof vapor-barrier film (4) is arranged between the back plate (6) close to the inner side and the foaming agent (2), the waterproof vapor-barrier film (4) extends to a position between the wall body (1) and a plastering layer (12) on the wall body (1), and a sealant (5) is arranged at the joint of the plastering layer (12) and the heightening frame (19) and the joint of the plastering layer (12) and the main frame (19).

4. The passive building window PVC-U pre-mounted auxiliary frame structure according to claim 3, wherein: the pre-installation auxiliary frame (15) is a PVC-U pre-installation auxiliary frame, the cross section of the pre-installation auxiliary frame (15) is L-shaped, a vertical plate of the pre-installation auxiliary frame (15) faces the outer side of a wall body, and a steel lining (20) is arranged inside a transverse frame of the pre-installation auxiliary frame (15).

5. The passive window for building PVC-U pre-installed auxiliary frame structure according to any one of claims 1 to 4, wherein: the outer side surface of the wall body (1) is provided with an outer wall external heat insulation piece (11), and waterproof breathable films (14) are arranged between the outer wall external heat insulation piece (11) and the wall body (1) and between the outer wall external heat insulation piece (11) and the pre-installation auxiliary frame (15).

6. The passive building window PVC-U pre-installed auxiliary frame structure according to claim 5, characterized in that: the wall body (1) and the wall surface of the outer wall external heat insulation piece (11) are both provided with a plastering layer (12), the upper part of the inner periphery of the plastering layer (12) of the outer wall external heat insulation piece (11) is provided with a flashing board (13) which inclines towards the outside, and the flashing board (13) is connected with the main frame (17) in a sealing way.

7. The passive building window PVC-U pre-installed auxiliary frame structure according to claim 6, characterized in that: the lower part of the inner periphery of the plastering layer (12) of the external thermal insulation piece (11) of the external wall is provided with a water dripping line (21), and the flashing board (13) is hermetically connected with the plastering layer (12) of the external thermal insulation piece (11) of the external wall and the flashing board (13) is hermetically connected with the heightening piece (19) through a pre-pressing sealing strip (16).

8. The passive building window PVC-U pre-installed auxiliary frame structure according to any one of claims 1 to 4/6/7, wherein: the main frame (17) is detachably connected to the pre-installation auxiliary frame (15) and the heightening frame (19) through self-tapping self-drilling screws (8).

9. The passive architectural window PVC-U pre-mount auxiliary frame structure of claim 8, wherein: an annular groove is formed in the wall body (1), the pre-installation auxiliary frame (15) is arranged in the annular groove, and the pre-installation auxiliary frame (15) is fixed on the wall body (1) through an expansion screw (7).

10. The passive architectural window PVC-U pre-mount auxiliary frame structure of claim 8, wherein: the lower part of the pre-installed auxiliary frame (15) is connected with an installation support (23) through self-tapping self-drilling screws (8), the installation support (23) is fixed on the wall body (1) through expansion screws (7), and a base plate (24) is arranged between the installation support (23) and the wall body (1).