Reinforcing rib support structure for smoke control composite air duct

Abstract

This utility model belongs to the technical field of duct reinforcement structure, and discloses a reinforcing support structure for a smoke-proof and exhaust composite duct. It includes a support beam, with a duct fixedly connected to its lower surface. The lower surface of the support beam has a slot with insertion holes. An installation block is installed within the slot. A reinforcing beam is fixedly connected to the lower surface of the installation block, and an installation beam is fixedly connected to the lower surface of the reinforcing beam. The installation beam has a slot with a connecting beam installed within it, and a second bolt is installed on the installation beam. Through the cooperation of the installation beam, slot, connecting beam, and second bolt, the two reinforcing beams are connected by the connecting beam, improving overall stability and transforming the independent reinforcing beams into a continuous load-bearing system. This increases the equivalent section modulus, significantly improving resistance to bending moment, shear, and torque. The integrated rigidity distribution reduces stress concentration at local weak sections, and the overall frame stiffness transmission path is more uniform.

Description

Technical Field

[0001] This utility model belongs to the technical field of duct reinforcement structure, specifically a reinforcing rib support structure for smoke-proof and exhaust composite ducts. Background Technology

[0002] Air ducts are piping systems used for air transport and distribution. There are two types: composite ducts and inorganic ducts. Composite ducts are represented by Durkduct ducts. They can be classified according to cross-sectional shape and material. In extreme conditions such as building fires, smoke control and exhaust systems need to maintain the integrity and airtightness of the ductwork to ensure unobstructed smoke exhaust, the availability of evacuation routes in fire scenarios, and the effective operation of fire-fighting equipment. This is often achieved by installing reinforcing ribs and supporting frames on the outside of the duct to improve its resistance to bending, torsion, and vibration, and to reduce the risk of deformation and leakage caused by thermal expansion and contraction.

[0003] Meanwhile, a large-diameter duct support and reinforcement structure, with application number CN202420449785.X, includes a mounting plate and a duct body: the mounting plate can be fixed to a wall, and the duct body can be fixed to the mounting plate; two sets of movable plates are disposed on the mounting plate, and the two sets of movable plates can move towards or away from each other along the length direction of the mounting plate, with the duct body located between the two sets of movable plates; two fixed rollers are rotatably connected between the two sets of movable plates; and two movable rollers are disposed between the two sets of movable plates, and the movable rollers can rise and fall along the height direction of the movable plates, by means of... The fixed rollers work together to clamp and fix the duct body; the mounting part, located on the mounting plate, guides and limits the movement of the moving plate as it moves along the length of the mounting plate; the positioning part, located on the mounting part, positions the moving plate; the lifting drive device, located on the moving plate, drives the moving roller to move and adjusts the position of the moving roller according to the diameter of the duct body; the limiting part, located on the duct body, limits the axial direction of the duct body when the fixed rollers and moving rollers clamp it.

[0004] However, the following problems were found in the implementation of the relevant technology: the welded structure is susceptible to damage from fire or high-temperature flue environments, which can alter the material properties of the weld joints. The weld area is prone to stress concentration points, which may lead to brittle fracture or leakage if not properly handled. Furthermore, welding operations pose risks of open flames, fumes, and high temperatures, placing higher demands on on-site fire safety and personnel health. Additionally, the reinforcement bars and support frames are installed at multiple points on-site, and the lack of precise positioning solutions can easily lead to the accumulation of concentricity errors, affecting sealing and load-bearing capacity.

[0005] Therefore, we propose a reinforced support structure for smoke prevention and exhaust composite ducts. Utility Model Content

[0006] To address the problems mentioned in the background art, this utility model provides a reinforcing support structure for smoke-proof and exhaust composite ducts. It features the advantages of installing the entire structure by bolt connection, avoiding welding operations, and improving installation efficiency by first snapping and then locking the connection. Additionally, it improves overall stability by connecting two reinforcing beams with connecting beams.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a reinforcing support structure for a smoke-proof and exhaust composite duct, comprising a support beam, a duct fixedly connected to the lower surface of the support beam, a slot provided on the lower surface of the support beam, an insertion hole provided on the slot, an installation block installed in the slot, a reinforcing beam fixedly connected to the lower surface of the installation block, a first bolt provided on the installation block, an insertion block fixedly connected to the upper surface of the installation block, an elastic column fixedly connected to the insertion block, a locking block fixedly connected to the other end of the elastic column, an installation beam fixedly connected to the lower surface of the reinforcing beam, a locking groove provided on the installation beam, a connecting beam installed in the locking groove, and a second bolt installed on the installation beam.

[0008] Preferably, one end of the first bolt is threaded with a nut, and the nut is provided with an anti-slip plate.

[0009] Preferably, the first bolt passes through the mounting block and the support beam and is locked in the nut to fix the mounting block to the support beam.

[0010] Preferably, the insert block is provided with a groove, and the elastic post is located in the groove.

[0011] Preferably, the elastic column is composed of a telescopic sleeve and a spring.

[0012] Preferably, the mounting beam is provided with a threaded hole, and the second bolt is threadedly connected to the threaded hole.

[0013] Preferably, the connecting beam is fixed to the mounting beam by a second bolt and a threaded hole.

[0014] Preferably, the other end of the connecting beam is connected to a mounting beam on another reinforcing beam.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses slots, holes, mounting blocks, reinforcing beams, first bolts, insert blocks, elastic columns, and locking blocks to install the entire structure via bolt connection, avoiding welding operations and reducing safety risks from sparks, welding fumes, and high-temperature operations. At the same time, the installation method of first engaging and then locking eliminates the need for support, reduces alignment difficulties, allows for faster on-site assembly, has a larger error tolerance, facilitates factory prefabrication and rapid on-site assembly, and is equally convenient for maintenance. It also facilitates segmented and block installation, reducing the weight and complexity of a single hoisting operation.

[0016] 2. This utility model improves overall stability by using the installation beam, slot, connecting beam and second bolt to connect two reinforcing beams, transforming independent reinforcing beams into a continuous load-bearing system, increasing the equivalent section modulus, significantly improving the resistance to bending moment, shear and torque, and reducing stress concentration at local weak sections due to the integrated rigidity distribution, thereby reducing the risk of stress concentration at the connection point due to thermal expansion and contraction, wind pressure and pulsating loads. With the help of the connecting beam, the stiffness transmission path of the overall frame is more uniform and the coupling between the duct and the external frame is tighter. Attached Figure Description

[0017] Figure 1 This is a top view of the overall structure of this utility model; Figure 2 This is a bottom view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the support beam connection structure of this utility model; Figure 4 This is a schematic diagram of the reinforced beam connection structure of this utility model.

[0018] In the diagram: 1. Support beam; 2. Air duct; 3. Groove; 4. Insertion hole; 5. Mounting block; 6. Reinforcing beam; 7. First bolt; 8. Insertion block; 9. Elastic column; 10. Locking block; 11. Mounting beam; 12. Locking groove; 13. Connecting beam; 14. Second bolt. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1 to 4As shown, this utility model provides a reinforcing support structure for a smoke-proof and exhaust composite duct, including a support beam 1. A duct 2, specifically a smoke-proof and exhaust composite duct 2, is fixedly connected to the lower surface of the support beam 1. A slot 3 is provided on the lower surface of the support beam 1, and an insertion hole 4 is provided on the slot 3. An installation block 5 is installed in the slot 3. A reinforcing beam 6 is fixedly connected to the lower surface of the installation block 5. A first bolt 7 is provided on the installation block 5. An insertion block 8 is fixedly connected to the upper surface of the installation block 5. An elastic column 9 is fixedly connected to the insertion block 8. A locking block 10 is fixedly connected to the other end of the elastic column 9. An installation beam 11 is fixedly connected to the lower surface of the reinforcing beam 6. A locking groove 12 is provided on the installation beam 11. A connecting beam 13 is installed in the locking groove 12. A second bolt 14 is installed on the installation beam 11.

[0021] Specifically, one end of the first bolt 7 is threaded with a nut, and the nut is fitted with an anti-slip plate.

[0022] Furthermore, the first bolt 7 passes through the mounting block 5 and the support beam 1 and is locked in the nut to fix the mounting block 5 to the support beam 1.

[0023] Furthermore, the insert 8 is provided with a groove, and the elastic post 9 is located in the groove.

[0024] It is worth noting that the elastic column 9 is composed of a telescopic sleeve and a spring.

[0025] It is worth noting that the mounting beam 11 is provided with threaded holes, and the second bolt 14 is threadedly connected to the threaded holes.

[0026] It is worth mentioning that the connecting beam 13 is fixed to the mounting beam 11 by the second bolt 14 and threaded holes.

[0027] It is worth emphasizing that the other end of the connecting beam 13 is connected to the mounting beam 11 on another reinforcing beam 6.

[0028] Among them, support beam 1 and air duct 2 are existing technologies and will not be described in detail; the "front, rear, left, and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.

[0029] Working principle: First, a support beam 1 is prefabricated, with a slot 3 and a insertion hole 4 pre-drilled on it. Then, the support beam 1 is installed in the factory building, and the air duct 2 is installed on the support beam 1. Next, the mounting block 5 on a reinforcing beam 6 is aligned with the slot 3 and inserted into the support beam 1, while the insertion block 8 is inserted into the insertion hole 4. The support beam 1 compresses the locking block 10, and the elastic column 9 is compressed backward under pressure. After the locking block 10 passes through the insertion hole 4, it pops out and locks onto the upper surface of the support beam 1, thereby fixing the position of the reinforcing beam 6 and preventing it from falling. Then, the first bolt 7 is passed through the mounting block 5 and the support beam 1, and locked with a nut to stably fix the position of the reinforcing beam 6. The reinforcing beam 6 strengthens the structural stability of the air duct 2. Then, multiple reinforcing beams 6 are installed in sequence. Then, the connecting beam 13 is inserted into the slot 12 on the mounting beam 11, and the position of the connecting beam 13 is locked with the second bolt 14, thereby strengthening the connection between the two reinforcing beams 6.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reinforcing support structure for a composite smoke-proof and exhaust duct, comprising a support beam (1), characterized in that: The lower surface of the support beam (1) is fixedly connected to the air duct (2). The lower surface of the support beam (1) is provided with a slot (3). The slot (3) is provided with an insertion hole (4). An installation block (5) is installed in the slot (3). The lower surface of the installation block (5) is fixedly connected to the reinforcing beam (6). The installation block (5) is provided with a first bolt (7). The upper surface of the installation block (5) is fixedly connected to the insertion block (8). The insertion block (8) is fixedly connected to the elastic column (9). The other end of the elastic column (9) is fixedly connected to the locking block (10). The lower surface of the reinforcing beam (6) is fixedly connected to the installation beam (11). The installation beam (11) is provided with a locking groove (12). The locking groove (12) is installed with a connecting beam (13). The installation beam (11) is installed with a second bolt (14).

2. The reinforcing rib support structure for a smoke-proof and exhaust composite duct according to claim 1, characterized in that: One end of the first bolt (7) is threaded with a nut, and the nut is provided with an anti-slip plate.

3. The reinforcing rib support structure for a smoke-proof and exhaust composite duct according to claim 1, characterized in that: The first bolt (7) passes through the mounting block (5) and the support beam (1) and is locked in the nut to fix the mounting block (5) to the support beam (1).

4. The reinforcing rib support structure for a smoke-proof and exhaust composite duct according to claim 1, characterized in that: The insert (8) is provided with a groove, and the elastic column (9) is located in the groove.

5. The reinforcing rib support structure for a smoke-proof and exhaust composite duct according to claim 1, characterized in that: The elastic column (9) is composed of a telescopic sleeve and a spring.

6. The reinforcing rib support structure for a smoke-proof and exhaust composite duct according to claim 1, characterized in that: The mounting beam (11) is provided with a threaded hole, and the second bolt (14) is threadedly connected to the threaded hole.

7. The reinforcing rib support structure for a smoke-proof and exhaust composite duct according to claim 1, characterized in that: The connecting beam (13) is fixed to the mounting beam (11) by the second bolt (14) and threaded hole.

8. The reinforcing rib support structure for a smoke-proof and exhaust composite duct according to claim 1, characterized in that: The other end of the connecting beam (13) is connected to the mounting beam (11) on another reinforcing beam (6).

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