Air pipe and fireproof plate integrated tight assembling assembly

Abstract

The utility model discloses an air pipe and fireproof plate integrated tight assembling assembly, and relates to the technical field of ventilation pipelines. According to a traditional smoke exhaust air pipe fireproof plate wrapping method, after pipeline hoisting connection is completed, an outer wrapping frame composed of U-shaped light steel keels and transverse, longitudinal and bottom edge reinforcing beams are installed outside a high-altitude air pipe, and then self-tapping screws are matched with L-shaped keels to assemble fireproof plates. The utility model provides an air pipe and fireproof plate integrated tight assembly component which is characterized in that a U-shaped light steel keel is tightly attached to the outer wall of an air pipe pipeline, L-shaped angle steel is arranged on the covered edges of the four corners of the U-shaped keel, the L-shaped angle steel and the U-shaped keel are connected through self-tapping screws to form a supporting frame, and then a fireproof plate and the supporting frame are tightly connected through the self-tapping screws. And the effect of effectively reinforcing and sealing the gap is achieved. According to the utility model, the construction efficiency is higher, the operation space requirement during installation is small, the situation that the fireproof plates cannot be externally wrapped due to installation dead angles in the later period is avoided, the connection is tighter when the fireproof plates are wrapped by the multi-section air pipes, and the construction quality is higher.

Description

Technical Field

[0001] This utility model relates to the field of ventilation duct technology, specifically to an integrated and tightly assembled assembly of a duct and a fireproof board. Background Technology

[0002] According to the requirements of the Code for Fire Protection Design of Buildings GB50016-2014 (2018 Edition), when air ducts pass through fire-resistant partitions, floors, and firewalls, the air ducts within a 2.0m radius on both sides of the fire dampers and smoke exhaust fire dampers at the point of penetration should be made of fire-resistant ducts or the outer walls of the ducts should be fire-protected, and their fire resistance rating should not be lower than that of the fire-resistant partition. According to the Technical Standard for Building Smoke Control Systems GB51251-2017, smoke exhaust ducts and their connecting components should be able to maintain their structural integrity continuously at 280℃ for 30 minutes, and the fire resistance rating of the smoke exhaust ducts should not be less than 1 hour. The fire resistance performance of ventilation ducts is expressed by fire integrity and fire insulation. Galvanized steel sheets have good integrity, but cannot meet the insulation requirements. Therefore, the fire resistance limit of galvanized steel sheets is very short, and it is impossible to reach half an hour. As a result, the traditional construction method is to cover the ducts with fireproof boards after installation. This method is difficult to install, hard to control the quality, and is labor-intensive and time-consuming. When the construction site space is small and the distance is insufficient, the fireproof boards cannot be covered, such as in corners, corridors with dense pipelines, and other locations with no operating space. The inability to cover the fireproof boards can easily lead to installation dead corners.

[0003] The traditional method of covering smoke exhaust ducts with fireproof boards involves installing an outer frame composed of U-shaped light steel keels and reinforcing beams on the horizontal, vertical, and bottom edges of the duct after the duct is hoisted and connected. Then, fireproof boards are assembled with self-tapping screws and L-shaped keels. The self-tapping screws are spaced 150mm apart. All places with U-shaped light steel keels on the inside need to be fixed with self-tapping screws. When encountering duct hangers, irregularly shaped boards need to be cut to avoid them.

[0004] The existing technology has the following problems: low construction efficiency and high safety risks in split hoisting, difficult operation in installation dead corners, and loose connection of the outer fireproof board. Summary of the Invention

[0005] To address the aforementioned problems, this utility model aims to provide an integrated and tightly assembled component for air ducts and fireproof boards. This component allows for the installation of air ducts on the ground, followed by the wrapping of fireproof boards and subsequent hoisting of the entire assembly. This results in higher construction efficiency, reduces the safety risks associated with secondary work at height, and solves the problems of fireproof boards not being able to be wrapped in dead corners during the installation of electromechanical ventilation ducts, as well as the issues of poor fireproof board installation quality and loose installation.

[0006] The main idea of ​​the technical solution adopted in this utility model is to install light steel keel on the outer wall of the air duct in advance, and then connect the fireproof board to the keel frame tightly with self-tapping screws to achieve tight installation of the fireproof board.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An integrated and tightly assembled air duct and fireproof board assembly includes an air duct 3, a support frame, a fireproof board 6, and self-tapping screws 7. The air duct 3 is characterized in that the support frame is tightly attached to the outer wall of the duct, and the fireproof board 6 is installed on the periphery of the support frame and the fireproof board 6 and the support frame are tightly connected by the self-tapping screws 7.

[0009] Furthermore, the supporting frame is a rectangular frame composed of L-shaped angle steel 4 and U-shaped light steel keel 8, and is fixed by self-tapping screws 7.

[0010] Furthermore, through the above technical solution, multiple U-shaped light steel keels 8 are installed at equal intervals between every two adjacent L-shaped angle steels 4.

[0011] Furthermore, the above technical solution provides that the upper and lower L-shaped angle steels 4 are respectively provided with threaded rod holes that penetrate the fireproof board.

[0012] Furthermore, through the above technical solution: the lead screw hole passes through the lead screw 5, wherein,

[0013] The top end of the lead screw 5 is connected to the M12 expansion anchor bolt 2 via a channel steel lifting lug 1;

[0014] The tail end of the lead screw 5 is fixed to the fireproof plate 6 by a connecting nut 9.

[0015] The beneficial effects of this utility model are:

[0016] 1. Energy saving and environmental protection: The construction of air ducts and fireproof panels can be integrated. By prefabricating them on the ground and then hoisting them for construction, the construction period can be shortened. Compared with traditional construction methods, it can reduce the waste caused by damage and bumps to the fireproof panels during the material cutting and secondary transportation process.

[0017] 2. Quality Control: Integrated installation avoids the need for dismantling and modification during the process due to insufficient space reserved for the fireproof board covering the duct; it comprehensively considers the optimization of pipelines, maintenance space for equipment, and subsequent operation space, and uses BIM for integrated pipeline layout to optimize the system, and batch processing of the ground improves the construction quality;

[0018] 3. Saves time and costs: Compared to traditional duct and fireproof panel installation procedures, the integrated installation process can reduce the use of machinery and equipment by half, saving labor input. This speeds up construction progress and reduces construction costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly described below.

[0020] Figure 1 This is a schematic diagram of an integrated and tightly assembled assembly of a duct and fireproof board according to the present invention.

[0021] Figure 2 This is a front view of an integrated and tightly assembled air duct and fireproof board assembly according to the present invention, with the fireproof boards on both sides of the air duct removed.

[0022] Figure 3 This is a front view of an integrated and tightly assembled air duct and fireproof board assembly according to the present invention.

[0023] Figure 4 This is a left view of an integrated and tightly assembled air duct and fireproof board assembly according to the present invention.

[0024] Figure 5 This is a top view of an integrated and tightly assembled air duct and fireproof board assembly according to the present invention.

[0025] In the diagram: 1. Channel steel lifting lug; 2. M12 expansion anchor bolt; 3. Air duct; 4. L-shaped angle steel; 5. Threaded rod; 6. Fireproof board; 7. Self-tapping screw; 8. U-shaped light steel keel; 9. Connecting nut. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] The inventors' experiments revealed that the traditional method of covering smoke exhaust ducts with fireproof boards involves installing an outer frame composed of U-shaped light steel keels as a support for fixing the fireproof boards after the duct is hoisted and connected. Then, the fireproof boards are assembled with self-tapping screws and L-shaped keels. This method has low construction efficiency, high safety risks, difficult operation in installation dead corners, loose connections of the fireproof boards, poor aesthetics when folding at bends and irregular parts, and complex construction process, occupying a lot of space and high cost.

[0029] Based on the above findings, this application proposes an integrated and tightly assembled assembly of air duct and fireproof board, which fixes single-section air ducts covered with fireproof boards on the ground and uses self-tapping screws for tight connection to achieve effective reinforcement and sealing of gaps.

[0030] Example

[0031] See Figures 1-5 This application discloses an integrated and tightly assembled assembly of air duct and fireproof board, including air duct 3, support frame, fireproof board 6, and self-tapping screws 7. The characteristic is that the support frame is tightly installed on the outer wall of the air duct 3, and the support frame and fireproof board 6 are tightly connected by self-tapping screws 7 to form an assembly. The assembly is hoisted by a hanger.

[0032] The support frame is a rectangular frame composed of L-shaped angle steel 4 and U-shaped light steel keel 8, and is fixed by self-tapping screws 7.

[0033] The U-shaped light steel keel 8 is evenly arranged on the outer wall of the air duct 3 in both the horizontal and vertical directions, with a spacing of 610mm between each keel. The position is adjusted appropriately to ensure that both ends of each fireproof board 6 are fixed to the U-shaped light steel keel 8. The cutting length of the U-shaped light steel keel 8 matches the cross-sectional dimensions of the air duct 6 and is less than the length of the air duct 3 and the fireproof board 6, with dimensions of 50×35×0.6mm.

[0034] The L-shaped angle steel 4 is used to fix the U-shaped light steel keel 8. It is set at the four corners of the arranged U-shaped light steel keel 8 to form an edge, and is connected by self-tapping screws 7 to form a frame, which fastens the U-shaped light steel keel 8 to the side wall of the air duct 3, laying the foundation for the installation of the fireproof board 6. The upper and lower L-shaped angle steel 4 are respectively provided with threaded rod holes for passing through the fireproof board, so that the threaded rod can pass through the threaded rod holes. The length of the L-shaped angle steel 4 is less than the length of the air duct 3 and greater than the length of the fireproof board 6, with a size of L40×4mm.

[0035] Duct 3 is a rectangular pipe used for air transport and distribution. The left and right end faces are flange faces, and duct 3 can be extended by bolt connection.

[0036] Fireproof board 6 is a fire-resistant building material for surface decoration made of asbestos-free fiber reinforced calcium silicate board. It uses galvanized steel sheet air duct. The width of the fireproof board 6 on the top and bottom of the air duct 3 is greater than that of the fireproof board 6 at the front and back of the air duct 3. The fireproof board 6 on the top and bottom of the air duct 3 has screw holes at the four corners to facilitate the passage of screws.

[0037] The hanger includes channel steel lifting lugs 1, M12 expansion bolts 2, threaded rods 5, and connecting nuts 9. The channel steel lifting lugs 1 are respectively fitted onto the top of the threaded rods 5. The M12 expansion bolts 2 are respectively embedded in the holes above the channel steel lifting lugs 1, and are aligned with the threaded rods 5. The tail end of the threaded rods 5 is fixed to the L-shaped angle steel 4 at the bottom of the duct 3 by the connecting nuts 9. All of the above parts are existing products and will not be described in detail here.

[0038] The outer wall of the air duct 3 is fitted with a U-shaped light steel keel 8. L-shaped angle steel 4 is installed at the four corners of the U-shaped light steel keel 8. The L-shaped angle steel 4 is connected to the U-shaped keel 8 with self-tapping screws 7 to form a frame. The threaded rod 5 runs through the entire frame. The bottom of the threaded rod 5 is fixed to the base of the L-shaped angle steel 4 at the bottom of the air duct 3 by the connecting nut 9. The fireproof board 6 is passed through the threaded rod 5 and is evenly and tightly connected to the supporting frame by a large number of self-tapping screws 7.

[0039] It is worth noting that when fixing the single-section fireproof duct covering board 6 on the ground, ST4.2 self-tapping screws 7 are used. When fixing the fireproof board 6, ensure that the spacing between the self-tapping screws 7 is not less than 150mm to effectively reinforce and seal gaps. After the fireproof duct covering board is processed in multiple sections on the ground, special attention should be paid to protecting the finished product during the hoisting process to prevent cracking caused by human impact.

[0040] One usage process in this embodiment is as follows: A U-shaped light steel keel is tightly installed on the outer wall of the air duct 3. L-shaped angle steel 4 is installed around the four corners of the U-shaped light steel keel 8. The L-shaped angle steel 4 is fixed to the U-shaped light steel keel 8 with self-tapping screws 7 to form a support frame. Then, the threaded rods 5 are inserted into the threaded rod holes of the L-shaped angle steel 4 respectively. The bottom is fixed to the L-shaped angle steel 4 at the bottom of the air duct 3 by connecting nuts 9. Then, the fireproof board 6 is passed through the threaded rods 5 and the fireproof board 6 is evenly and tightly connected to the support frame by a large number of self-tapping screws 7. Finally, the channel steel lifting lugs 1 and M12 expansion anchors 2 are embedded in the threaded rods 5 in sequence.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A duct and fireproof board integrated close fitting assembly comprising a duct (3), a support frame, a fireproof board (6), a self-tapping screw (7), characterized in that, The air pipe (3) is tightly arranged with a support frame outside the pipe wall, a fireproof plate (6) is installed on the periphery of the support frame and is tightly connected with the support frame through self-tapping screws (7), the support frame is a rectangular frame composed of L-shaped angle steels (4) and U-shaped light steel keels (8) and is fixed through self-tapping screws (7), a plurality of U-shaped light steel keels (8) are installed at equal intervals between every two adjacent L-shaped angle steels (4), a screw hole penetrating through the fireproof plate is formed in each of the upper and lower L-shaped angle steels (4), and the screw hole penetrates through a lead screw (5).

2. The integrated tight fitting assembly of air duct and fireproof plate according to claim 1, characterized in that: The top end of the lead screw (5) is connected with an M12 expansion anchor bolt (2) through a channel steel hanger (1), and the tail end of the lead screw (5) is fixed on the fireproof plate (6) through a connecting nut (9).

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