A multi-layered air duct fixing device

Abstract

This invention discloses a multi-layer duct fixing device, comprising multiple sets of support plates and two vertically arranged hangers. The support plates are cuboid structures, with two arm sleeves fixedly installed on the front and rear side walls of each support plate. An extension arm is movably fitted inside each arm sleeve. A connecting block is fixedly installed at the outer ends of two adjacent extension arms. A vertical through-hole is formed on the connecting block, through which the hanger moves. The outer wall of the hanger has external threads, and multiple sets of limiting bolts are connected to these threads. Each set of limiting bolts is located on the upper and lower sides of the corresponding connecting block, used to vertically limit the connection block. Adjustable limiting plates are provided on the top two side walls of the support plates, and the duct to be fixed is clamped between the support plates and the limiting plates. This invention solves the problems of poor adaptability, inability to flexibly match ducts of different sizes and layers, insufficient installation stability, and low construction efficiency of existing duct fixing devices.

Description

Technical Field

[0001] This invention relates to the field of duct construction technology, and more specifically, to a multi-layer duct fixing device. Background Technology

[0002] Existing duct fixing devices on the market are mostly fixed structures, making it difficult to adapt to the installation needs of ducts of different sizes and with different numbers of layers. When the duct size changes, corresponding fixing components need to be replaced, which not only increases installation costs but also reduces installation efficiency. Furthermore, in existing fixing devices, the positions of the hangers are mostly fixed, unable to be flexibly adjusted according to the duct width. This leads to uneven stress during duct fixing, and long-term use can easily result in loosening and displacement, affecting the duct's sealing and stability. In addition, for the installation of multi-layer ducts, existing devices lack specialized layer support and limiting structures. When multiple ducts are stacked, they are prone to shaking and misalignment, posing safety hazards. Moreover, the installation process is cumbersome, requiring significant manpower and time, and cannot meet the requirements for efficient, convenient, and universal installation. Therefore, developing a flexible, adaptable, stable, and convenient multi-layer duct fixing device is key to overcoming the shortcomings of existing technologies. Summary of the Invention

[0003] The purpose of this invention is to solve the problems mentioned in the background art. This invention provides a multi-layer duct fixing device, which solves the problems of poor adaptability of existing duct fixing devices, inability to flexibly match ducts of different sizes and numbers of layers, insufficient installation stability, and low construction efficiency.

[0004] The present invention adopts the following technical solution:

[0005] A multi-layer duct fixing device includes multiple sets of support plates and two vertically arranged hangers. The support plates are cuboid structures. Two arm sleeves are fixedly installed on the front and rear side walls of each support plate. An extension arm is movably sleeved inside the arm sleeve. The outer ends of two adjacent extension arms are fixedly installed with a connecting block. A vertical through hole is opened on the connecting block. The hanger is movably inserted through the through hole of the connecting block.

[0006] The outer wall of the boom is provided with external threads, and multiple sets of limiting bolts are connected to the outer wall of the boom. Each set of limiting bolts is located on the upper and lower sides of the corresponding connecting block, and is used to vertically limit the connecting block.

[0007] The top two side walls of the support plate are equipped with adjustable limiting plates, and the air duct to be fixed is clamped between the support plate and the limiting plates.

[0008] Furthermore, the height of the arm sleeve is less than the height of the support plate. The support plate has symmetrical adjustment grooves on the upper and lower sides at both ends. The adjustment grooves have first threaded holes. The bottom of the limiting plate is installed at the first threaded hole, and the end of the limiting plate is located on the outside of the support plate.

[0009] Furthermore, each hanger is equipped with a mounting plate at the top, and the mounting plate is fitted with bolts for fixed connection to the top of the wall.

[0010] Furthermore, the limiting plate is L-shaped.

[0011] Furthermore, the arm sleeve has multiple sets of vertically distributed through holes at equal intervals, and the extension arm has a fixed threaded hole corresponding to the position of the through hole. A second fixing bolt passes through the through hole and passes through the fixed threaded hole to achieve relative fixation between the extension arm and the arm sleeve.

[0012] Furthermore, the vertical section of the limiting plate is equipped with a pad mounting hole, and a pad is installed at the pad mounting hole, with the pad fitting against the side wall of the air duct.

[0013] Beneficial effects

[0014] 1. Highly adaptable, it can flexibly meet the installation needs of ducts of different sizes and layers. By adjusting the position of the limiting plate in the adjustment groove and fixing it with the first fixing bolt, it can adapt to ducts of different lengths. By pulling the extension arm to adjust the position of the connecting block and fixing it with the second fixing bolt, it can adapt to ducts of different widths. At the same time, the number of support plates can be flexibly selected according to the number of duct layers, without the need to replace the fixing parts, thus reducing installation costs.

[0015] 2. High installation stability: The duct is clamped between multiple support plates, and the L-shaped limiting plate fits tightly with the outer wall of the duct, which can effectively limit the left and right and up and down displacement of the duct, and prevent the duct from shaking or shifting. At the same time, the hanger limits the connection block up and down through the limiting bolts, ensuring the stability of the connection block and the support plate, thereby ensuring the firmness of the entire duct fixing structure and reducing the risk of loosening after long-term use.

[0016] 3. Convenient and efficient installation: All components of the device adopt a detachable structure with bolt connections, making installation and disassembly simple and requiring no complicated construction tools. At the same time, each adjustment structure is easy to operate, enabling quick positioning and fixing of the duct, saving manpower and construction time.

[0017] 4. The structure is reasonably designed. The support plate can provide uniform support for the air duct. The movable sleeve structure of the arm sleeve and the extension arm is reasonably designed, which is smooth and reliable. The mounting plate at the top of the hanger can ensure a firm connection between the hanger and the wall. The overall structure has strong stability and long service life, which can effectively ensure the safe and stable operation of the ventilation and air conditioning system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of an embodiment of the present invention;

[0020] Figure 3 This is a partial schematic diagram of an embodiment of the present invention;

[0021] Figure 4 This is a partial schematic diagram of another embodiment of the present invention.

[0022] In the diagram: 1. Air duct; 2. Mounting plate; 10. Hanger rod; 11. Limit bolt; 12. Support plate; 13. Adjustment groove; 14. First threaded hole; 15. Limiting plate; 151. Pad mounting hole; 16. First fixing bolt; 17. Arm sleeve; 18. Through hole; 19. Second fixing bolt; 20. Extension arm; 21. Connecting block; 22. Through hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0024] This invention discloses a multi-layer duct fixing device, including multiple sets of support plates 12 and two vertically arranged hangers 10. The support plates 12 are cuboid structures. Two arm sleeves 17 are fixedly installed on the front and rear side walls of each support plate 12. An extension arm 20 is movably sleeved in the arm sleeve 17. The outer ends of two adjacent extension arms 20 are fixedly installed with a connecting block 21. A vertical through hole 22 is opened on the connecting block 21. The hanger 10 is movably inserted through the through hole 22 of the connecting block.

[0025] The outer wall of the boom 10 is provided with external threads, and the outer wall of the boom 10 is threaded with multiple sets of limiting bolts 11. Each set of limiting bolts 11 is located on the upper and lower sides of the corresponding connecting block 21, and is used to vertically limit the connecting block 21.

[0026] The top two side walls of the support plate 12 are provided with adjustable limiting plates 15, and the air duct 1 to be fixed is clamped between the support plate 12 and the limiting plates 15.

[0027] Two support plates 12 limit the top and bottom of the air duct 1, and the limiting plate 15 limits the sides of the air duct 1.

[0028] In the figure, one end of the duct 1 is clamped between two vertically distributed support plates 12 and between four limiting plates 15 on the two support plates 12. The support plates 12 and the limiting plates 15 limit the four sides of the duct 1.

[0029] Each duct 1 requires at least two sets of this invention to maintain stable fixation. If the duct 1 is very long, additional sets of this invention can be added to secure the duct 1.

[0030] In one embodiment of the present invention, the height of the arm sleeve 17 is less than the height of the support plate 12. In this way, when the air duct 1 is fixed, only the support plate 12 contacts the surface of the air duct 1, while the arm sleeve 17 cannot contact the air duct 1.

[0031] The support plate 12 has symmetrical adjustment grooves 13 on its upper and lower sides at both ends. A first threaded hole 14 is provided at the adjustment groove 13. The bottom of the limiting plate 15 is installed at the first threaded hole 14, and the end of the limiting plate 15 is located on the outside of the support plate 12. In this way, the limiting plate 15 can contact and limit the movement of the air duct 1.

[0032] The function of the adjusting groove 13 is to adjust the position of the limiting plate 15. By adjusting the position of the limiting plate 15, the two sides of the air duct 1 can be limited. Therefore, the present invention can fix air ducts 1 of various widths.

[0033] In one embodiment of the present invention, each of the hanging rods 10 is equipped with a mounting plate 2 at its top, and the mounting plate 2 is provided with bolts for fixed connection to the top of the wall.

[0034] When installing the multi-layer duct 1, firstly, fix the mounting plate 2 at the top of the hanger 10 to the top wall surface of the wall with bolts to stabilize the hanger 10. Then, select the number of support plates 12 according to the actual number of ducts 1. When installing a single layer of duct 1, one or two support plates 12 can be used. If one support plate 12 is used, the duct 1 is installed on the top wall surface of the support plate 12. If two support plates 12 are used, to ensure the stability of the duct 1, the duct 1 can be installed between two support plates 12. If two ducts 1 are installed, three support plates 12 can be used, and the duct 1 is installed between three support plates 12.

[0035] After the support plate 12 is installed, the air duct 1 is placed on the top wall of the support plate 12. The support plate 12 is located at the bottom center of the air duct 1, which can provide support and stability. The air duct 1 is then inserted. Since the air ducts come in different lengths, an adjustable limiting plate 15 can be set to meet the installation requirements of different air duct sizes. After the limiting plate 15 is adjusted to a suitable position, it is fixed with the first fixing bolt 16. The other side of the limiting plate 15 is in contact with the wall of the air duct, which makes the style more stable after installation.

[0036] In one embodiment of the present invention, the limiting plate 15 is L-shaped.

[0037] In one embodiment of the present invention, the arm sleeve 17 has multiple sets of vertically distributed through holes 18 at equal intervals. The extension arm 20 has fixed threaded holes corresponding to the positions of the through holes 18. A second fixing bolt 19 passes through the through hole 18 and through the fixed threaded hole, thereby fixing the extension arm 20 and the arm sleeve 17 relative to each other. The connection position between the extension arm 20 and the arm sleeve 17 can be adjusted, so that air ducts 1 of various sizes can be installed.

[0038] In one embodiment of the present invention, a pad mounting hole 151 is installed on the vertical section of the limiting plate 15, and a pad is installed at the pad mounting hole 151, with the pad fitting against the side wall of the air duct. The pad can protect the air duct 1.

[0039] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A multi-layer duct fixing device, characterized in that: It includes multiple sets of support plates and two vertically arranged suspension rods. The support plates are cuboid structures. Two arm sleeves are fixedly installed on the front and rear side walls of each support plate. An extension arm is movably sleeved inside the arm sleeve. The outer ends of two adjacent extension arms are fixedly installed with a connecting block. A vertical through hole is opened on the connecting block. The suspension rod is movably inserted through the through hole of the connecting block. The outer wall of the boom is provided with external threads, and multiple sets of limiting bolts are connected to the outer wall of the boom. Each set of limiting bolts is located on the upper and lower sides of the corresponding connecting block, and is used to vertically limit the connecting block. The top two side walls of the support plate are equipped with adjustable limiting plates, and the air duct to be fixed is clamped between the support plate and the limiting plates.

2. The multi-layer duct fixing device according to claim 1, characterized in that: The height of the arm sleeve is less than the height of the support plate. The support plate has symmetrical adjustment grooves on the upper and lower sides at both ends. The adjustment grooves have first threaded holes. The bottom of the limiting plate is installed at the first threaded hole, and the end of the limiting plate is located on the outside of the support plate.

3. The multi-layer duct fixing device according to claim 1, characterized in that: Each hanger rod is equipped with a mounting plate at its top, and the mounting plate has bolts for fixed connection to the top of the wall.

4. A multi-layer duct fixing device according to claim 2, characterized in that: The limiting plate is L-shaped.

5. A multi-layer duct fixing device according to claim 1, characterized in that: The arm sleeve has multiple sets of vertically distributed through holes at equal intervals. The extension arm has a fixed threaded hole corresponding to the position of the through hole. A second fixing bolt passes through the through hole and passes through the fixed threaded hole to achieve relative fixation between the extension arm and the arm sleeve.

6. A multi-layer duct fixing device according to claim 1, characterized in that: The vertical section of the limiting plate is equipped with a pad mounting hole, and a pad is installed at the pad mounting hole, with the pad fitting against the side wall of the air duct.

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