Method for connecting wall bushing and cable bridge in civil air defense area

Abstract

A method for connecting a wall bushing and a cable bridge in a civil air defense area is characterized by comprising the following steps that a, a protection frame is manufactured, specifically, the size of the protection frame is determined according to a wall pre-buried bushing, the protection frame is provided with a rectangular bottom plate and a protection frame cover plate, and the rectangular bottom plate is provided with a plurality of through holes used for allowing the wall bushing to penetrate through; the four edges of the rectangular bottom plate are fixedly connected with the protection frame side plates through the protection frame inner turnups which are obliquely arranged, and the protection frame outer turnups are arranged on the protection frame side plates on one side in the length direction of the rectangular bottom plate, so that the protection frame outer turnups are perpendicular to the protection frame side plates; and b, a cable bridge end connector is manufactured, specifically, the width of the cable bridge is 400 mm, the cable bridge is used for cable laying, the cable bridge is provided with a cable bridge cover plate, and the end of the cable bridge is provided with a cable bridge lower flange. The method for connecting the wall bushing and the cable bridge in the civil air defense area has the advantages that the situations that the cable penetrates through the wall in a mess, the cable is mechanically damaged and corroded and the like are avoided, it is ensured that the cable is not damaged, and the quality and appearance requirements are met.

Description

Technical Field

[0001] The invention belongs to the technical field of house construction and installation engineering, and specifically relates to a method for connecting a wall bushing and a cable bridge in a civil air defense area. Background Art

[0002] With the rapid development and technological innovation of the urban construction industry, civil air defense projects, as an integral part of residential buildings and a crucial component of urban security, are crucial for the reliability of their electrical systems. Cable tray connections between pre-buried pipes in walls and installed in basements are crucial for electrical installation in civil air defense areas, directly impacting the safe operation and protective performance of the entire electrical system.

[0003] In basement civil air defense projects, in order to ensure stable power and signal transmission between different fire protection zones, and to meet the special requirements of civil air defense projects for airtight, fireproof, and explosion-proof protection, the embedded casings in the basement structural walls are often designed centrally. However, various cables are laid on cable trays. When the cable trays are connected to the wall casings, the cable trays and casings cannot be connected one-to-one, and the sizes are asymmetrical. The cables are messy when passing through the walls, and it is very easy for the cables to be mechanically damaged or corroded in the process of passing through the wall casings, and the safety and stability of the cables passing through the structural walls cannot be guaranteed.

[0004] Therefore, the known connection method between the wall bushing and the cable tray in the civil air defense area has the above-mentioned inconveniences and problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a safe and reliable method for connecting a wall bushing and a cable tray in a civil air defense area.

[0006] To achieve the above objectives, the technical solution of the present invention is: A method for connecting a wall bushing and a cable tray in a civil air defense area, characterized by comprising the following steps: a. Make a protective frame The size of the protective frame is determined according to the pre-embedded wall casing. The protective frame is provided with a rectangular bottom plate and a protective frame cover plate. The rectangular bottom plate is provided with a number of through holes for inserting the wall casing. The four sides of the rectangular bottom plate are fixedly connected to the protective frame side plates through the obliquely arranged protective frame inner flanges, so that the protective frame bottom plate and the protective frame side plates are perpendicular; the protective frame side plates on one side of the length of the rectangular bottom plate are provided with protective frame outer flanges, so that the protective frame outer flanges are perpendicular to the protective frame side plates; the protective frame cover plate is a rectangular cover plate with a cable tray socket, and the protective frame cover plate is provided with protective frame cover plate flanges around it so that the protective frame cover plate can be tightly attached to the protective frame; The wall bushing on the rectangular base plate is 150mm away from both sides and the upper edge of the rectangular base plate, and 200mm away from the lower edge; the inner flange width of the protective frame is 50mm, and the outer flange width of the protective frame is 150mm; b. Make the end connector of the cable tray The cable tray is 400mm wide and is used for laying cables. A cable tray bottom flange is set at the end of the cable tray. The height of the cable tray bottom flange is 150mm, which is the same height as the outer flange of the protective frame and is used to connect and fix the cable tray and the protective frame.

[0007] The method for connecting the wall bushing and the cable tray in the civil air defense area of ​​the present invention can be further implemented by adopting the following technical measures.

[0008] In the aforementioned method, the thickness of the protective frame body is 250 mm; the protective frame body is fixed to the structural wall by anchor nails, and the inner flange and the outer flange of the protective frame are fixed by electric welding.

[0009] After adopting the above technical solution, the method for connecting the wall bushing and the cable tray in the civil air defense area of ​​the present invention has the following advantages: 1. Avoid messy cable penetration through the wall, mechanical damage and corrosion of the cable when passing through the wall casing; 2. Ensure that the cable is not damaged; 3. Meet the quality perception requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic diagram of the connection structure between the wall bushing and the cable tray according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the protective frame structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the cable tray connection end structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the connection between the protection frame and the cable tray according to an embodiment of the present invention; Figure 5 Schematic diagram of a protective frame cover according to an embodiment of the present invention.

[0011] In the figure: 1 protective frame bottom plate, 2 protective frame cover plate, 3 cable tray cover plate, 4 cable tray, 5 anchor nails, 6 protective frame side plates, 7 casing, 8 protective frame inner flange, 9 protective frame outer flange, 10 cable tray lower flange, 11 protective frame cover flange, 12 cable tray socket. DETAILED DESCRIPTION

[0012] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0013] Example 1 The basement construction area of ​​the residential building is 63,000 square meters, and the construction area of ​​the civil air defense area is 1.5 square meters, including 8 protection units and 1 fixed power station. There are many wall bushings in the civil air defense area, with the most wall bushings having 12 wire pipes, and all of them are introduced from a 400mm wide cable tray. In order to better avoid the cables from being messy and damaged when passing through the wall, a square cable protection frame is designed at the multi-tube wall bushing, and the cable tray is connected to the cable protection frame. After the cables are laid, the cable tray cover and the protection frame cover are installed to fully enclose the cables, effectively avoiding mechanical damage and corrosion of the cables.

[0014] Please refer to Figure 1-Figure 5 The method for connecting a wall bushing and a cable tray in a civil air defense area of ​​the present invention comprises the following steps: a. Make a protective frame The size of the protective frame is determined according to the pre-embedded sleeve in the wall. The protective frame is provided with a rectangular protective frame bottom plate 1 and a protective frame cover plate 2. A number of through holes are provided on the rectangular bottom plate for inserting the wall sleeve 7. The four sides of the rectangular bottom plate are fixedly connected to the protective frame side plate 6 through the obliquely arranged protective frame inner flange 8, so that the protective frame bottom plate and the protective frame side plate are perpendicular; the protective frame side plate on one side of the length of the rectangular bottom plate is provided with a protective frame outer flange 9, so that the protective frame outer flange and the protective frame side plate are perpendicular; the protective frame cover is a rectangular cover with a cable tray socket 12, and the protective frame cover is provided with a protective frame cover flange 11 around it, so that the protective frame cover can be close to the protective frame; the thickness of the protective frame body is 250mm; the protective frame body is fixed to the structural wall by anchor nails 5, and the protective frame inner flange and the protective frame outer flange are each fixed by electric welding.

[0015] The wall bushing on the rectangular base plate is 150mm away from both sides and the upper edge of the rectangular base plate, and 200mm away from the lower edge; the inner flange width of the protective frame is 50mm, and the outer flange width of the protective frame is 150mm; b. Make the end connector of the cable tray The cable tray 4 is 400mm wide and is used for laying cables. The cable tray is provided with a cable tray cover 3. A cable tray lower flange 10 is provided at the end of the cable tray. The height of the cable tray lower flange is 150mm, which is the same height as the outer flange of the protective frame and is used to connect and fix the cable tray to the protective frame.

[0016] The invention discloses a method for connecting a wall bushing and a cable bridge in a civil air defense area. The wall bushing and cable bridge connection system is composed of a wall bushing protection frame, a protection frame cover plate, a cable bridge, a cable bridge cover plate and anchor nails.

[0017] The specific operation method of connecting the wall bushing in the civil air defense area with the cable bridge of the present invention is as follows: (1) According to the wall sleeve of the civil air defense wall, a sleeve protection frame is made and the cable tray is fixed on the protection frame. After the wiring is completed, the cables are sealed with the cover of the protection frame and the cover of the cable tray.

[0018] (2) The dimensions of the protective frame are determined based on the pre-embedded wall casing. The left and right sides and top of the protective frame are 150 mm from the outermost casing edge and 200 mm from the lower casing edge. The inner and outer edges of the protective frame are 50 mm long and 150 mm long, respectively. The thickness of the protective frame is 250 mm. The protective frame is fixed to the structural wall with anchors, and the frame flange is fixed by electric welding.

[0019] (3) The cable tray is 400mm wide and is used for laying cables. A lower flange is set at the end of the cable tray with a height of 150mm, the same height as the outer flange of the protective frame, and is used to connect the cable tray to the protective frame in the future.

[0020] (4) The cable tray is connected to the wall bushing protection frame by fixing the bottom flange of the cable tray to the outer flange of the protection frame with anchor nails. Since the cable tray flange is at the same height as the outer flange of the protection frame, when fixing the cable tray, ensure that the bottom of the cable tray is not higher than the upper edge of the outer flange of the protection frame.

[0021] (5) The protective frame cover is used as a cover to seal the cable tray wall sleeve area after the cable is installed. The thickness of the protective cover is 20mm, and the length and width are determined according to the size of the sleeve protection frame, ensuring that the cover can fit tightly against the protection frame. A bridge socket is set in the middle of the lower part of the protective cover. The size of the bridge socket is made according to the size of the cable tray, ensuring that the protective frame cover can fit tightly against the cable tray cover after installation.

[0022] The installation sequence of the wall bushing and cable tray in the civil air defense area of ​​the present invention is as follows: (1) Determine the size of the casing protection frame; →2) Make the frame around the casing protection frame; →3) Fold the inner and outer edges of the protection frame; →4) Fix the protection frame to the structural wall; →5) Make the end connector of the cable tray; →6) Lay the cables in the cable tray; →7) Install the cable tray cover; →8) Make and install the casing protection frame cover.

[0023] The operation requirements for the connection and installation of the wall bushing and cable tray in the civil air defense area of ​​the present invention are as follows: (1) Requirements for setting up protective frame: The protective frame is used to enclose the cables at the wall bushing. The size of the frame must meet the space requirements when laying the cables, and it must be tightly attached to the structural wall when fixed to prevent later corrosion.

[0024] The protective frame cover should not be too large compared to the size of the protective frame. Ensure that the cover is tightly sealed to the frame on all sides and there is no gap between it and the cable tray cover.

[0025] (2) Connection requirements between cable tray and protective frame The connection between the cable tray and the casing protection frame is tight and cannot penetrate into the interior. Therefore, the cable tray flange must meet the rigidity requirements. The cable tray is fixed to the outside of the protection frame with anchor nails.

[0026] The height of the flange under the bridge frame must not exceed the height of the protective frame to avoid scratches to subsequent maintenance personnel after exceeding the protective frame.

[0027] The present invention has substantial characteristics and significant technological progress. The method for connecting wall sleeves and cable trays in civil air defense areas of the present invention is applicable to all connection ranges involving wall sleeves and cable trays in construction projects. Sleeve protection frames of corresponding sizes are made according to the number of wall sleeves, and the cable tray is connected to the protection frame. After the sleeve cover and the protection frame cover are installed, the problem of messy cable penetration through the wall is solved, and the cables are easily mechanically damaged and corroded in the process of passing through the wall sleeves. It also ensures that the cables are not damaged when passing through the structural wall safely and stably, and can better meet the quality and appearance requirements.

[0028] The method for connecting the wall bushing and the cable bridge in the civil air defense area of ​​the present invention has been used in the Xiejiaji shed reconstruction project in Huainan City, with obvious effects, and has been fully recognized by the construction unit and the supervision unit.

[0029] The above embodiments are intended to illustrate the present invention only and are not intended to limit the present invention. Persons skilled in the art may make various modifications or variations without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions are intended to fall within the scope of the present invention and are defined by the claims.

Claims

1. A method for connecting a wall bushing and a cable tray in a civil air defense area, characterized in that The following steps are involved: a. Make a protective frame The size of the protective frame is determined according to the pre-embedded wall casing. The protective frame is provided with a rectangular bottom plate and a protective frame cover plate. The rectangular bottom plate is provided with a number of through holes for inserting the wall casing. The four sides of the rectangular bottom plate are fixedly connected to the protective frame side plates through the obliquely arranged protective frame inner flanges, so that the protective frame bottom plate and the protective frame side plates are perpendicular; the protective frame side plates on one side of the length of the rectangular bottom plate are provided with protective frame outer flanges, so that the protective frame outer flanges are perpendicular to the protective frame side plates; the protective frame cover plate is a rectangular cover plate with a cable tray socket, and the protective frame cover plate is provided with protective frame cover plate flanges around it so that the protective frame cover plate can be tightly attached to the protective frame; The wall bushing on the rectangular base plate is 150mm away from both sides and the upper edge of the rectangular base plate, and 200mm away from the lower edge; the inner flange width of the protective frame is 50mm, and the outer flange width of the protective frame is 150mm; b. Make the end connector of the cable tray The cable tray is 400mm wide and is used for laying cables. The cable tray is provided with a cable tray cover. A cable tray bottom flange is provided at the end of the cable tray. The height of the cable tray bottom flange is 150mm, which is the same height as the outer flange of the protective frame and is used to connect and fix the cable tray and the protective frame.

2. The method for connecting a wall bushing and a cable tray in a civil air defense area according to claim 1, characterized in that: The thickness of the protective frame body is 250mm; the protective frame body is fixed to the structural wall by anchor nails, and the inner flange and the outer flange of the protective frame are fixed by electric welding.

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