Node structure of light steel roof lower hanging support hanger

By adopting a support hanger node structure composed of multiple purlins and connecting plates on the light steel roof, combined with an adjustable installation mechanism for fixed angle steel angle steel, the problem of large span and high load pipeline support on the light steel roof is solved, and the effect of aesthetics, cost saving and convenient installation is achieved.

CN222963479UActive Publication Date: 2025-06-10WUXI MUNICIPAL DESIGN INST
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Patent Information

Application Number
CN202422328441.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-23
Publication Date
2025-06-10
Estimated Expiration
2034-09-23

AI Technical Summary

Technical Problem

The prior art is difficult to effectively support large span and high load pipelines on light steel roofs, and the traditional support hanger installation method increases the design difficulty, construction cost and maintenance cost, affecting the aesthetics and environmental performance of the building.

Method used

The multi-stitched purlin, connecting plate, air duct fixed angle steel height adjustable installation mechanism, air duct fixed angle steel, fastening bolts and fastening nuts and other components are used to form a light steel roof under-mounted support hanger node structure. Through the combination of multi-stitched purlin and connecting plate, the height adjustable of the air duct fixed angle steel is achieved to meet the support needs of large spans and high loads.

Benefits of technology

It realizes that the light steel roof purlin can withstand large loads, avoids the need to increase the need for fixed beams, is beautiful and tidy, saves cost and is convenient to install, and is suitable for light steel roof buildings with large spans and high clearance.

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Abstract

The utility model relates to a node structure of a light steel roof lower hanging support hanger. The node structure comprises a multi-splicing purline, a connecting plate, an air pipe fixing angle steel height adjustable mounting mechanism, air pipe fixing angle steel, a fastening bolt and a fastening nut. The connecting plate upper section plate is fixed on the side surface of the purline main plate through a fastening bolt and a fastening nut, and the connecting plate upper section plate and the purline bottom plate are respectively arranged on two sides of the purline main plate; an air pipe fixing angle steel height-adjustable mounting mechanism is mounted on the lower section plate of the connecting plate, and air pipe fixing angle steel is mounted on the air pipe fixing angle steel height-adjustable mounting mechanism. The multi-splicing purline is fully utilized as a fixing part of the pipeline support hanger, so that the light steel roof purline can bear the weight load of various pipelines, the secondary addition of a fixing cross beam of the pipeline support hanger can be avoided, the manufacturing cost is saved, and the installation is convenient and fast.
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Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline support and hanger structures, and specifically discloses a node structure of a suspended support and hanger under a light steel roof. Background Art

[0002] Most industrial buildings are steel structure buildings with high spaces and large spans. The main structure has the characteristic of strong bearing capacity, and the spacing of steel frames generally ranges from 6 to 9 m. If only the steel frames are used as the support points of the air duct support and hanger, the spacing exceeds the maximum air duct support and hanger spacing specified by most specifications. Even if individual pipelines can meet the support and hanger spacing of this scale, the large spacing will inevitably lead to large loads. The finished air duct support and hanger itself has limited bearing capacity, and the commonly used independent support and hanger method still cannot complete the installation, or corresponding structural secondary beams are added on the main beam to provide force-bearing nodes for the installation of the top pipeline line in the later stage; in this way, the load of the suspended pipelines inside the building can be indirectly transmitted to the main load-bearing structure of the building through the support and hanger system connecting the main and secondary beams and other parts, and most of the added steel secondary beam nodes are fixed by welding.

[0003] The rooting points of traditional air duct support and hangers generally rely on expansion bolts driven into the wall body. However, in steel structure projects, drilling cannot be carried out on the main body of the steel structure, and welding with the steel structure is not allowed (affecting the performance of the steel structure), resulting in relatively cumbersome connection between traditional air duct support and hangers and the steel structure. The finished air duct support and hanger realizes perfect connection with the steel structure through its beam clamps and section steel clamps. However, different forms of clamps can bear different loads and have different connection forms with section steel. Therefore, section steel clamps that meet the bearing capacity can be selected to realize the connection between the support and hanger and the steel structure.

[0004] However, the above methods have obvious disadvantages. For example, they increase the overall design difficulty; adding a certain number of secondary beams and different specifications of beam clamps only for installing the pipeline line not only increases the construction cost, reduces the overall aesthetic effect, but also increases the load of the overall building; and correspondingly increases the labor cost of construction enterprises and the maintenance cost in the later stage; it is not conducive to the promotion of green building and carbon comprehensive energy conservation and environmental protection development advocated by the construction industry. Therefore, the traditional pipeline support and hanger installation method is no longer applicable to the construction of light steel roof buildings such as industrial factories, warehouses, and exhibition centers today.

[0005] Therefore, it is necessary to propose a node structure of a suspended support and hanger under a light steel roof that does not weaken the strength of the structural steel beam and is applicable to large-span spaces, so as to be able to meet the pipeline installation problem under the light steel roof, and is convenient to use, does not need to be customized according to the project, and can be repeatedly turned over and used. Summary of the Invention

[0006] The purpose of the present utility model is to overcome the deficiencies in the prior art and provide a node structure of a hanging support under a light steel roof that can ensure that the roof steel purlins can bear large loads and is applicable to light steel roofs with large spans, high clear heights, and dense and complex pipeline area layouts.

[0007] According to the technical solution provided by the present utility model, the node structure of the hanging support under the light steel roof includes a multi - panel purlin, a connecting plate, a height - adjustable installation mechanism for an air duct fixing angle steel, an air duct fixing angle steel, fastening bolts and fastening nuts;

[0008] The purlin includes a purlin main board, a purlin top board, a purlin bottom board, a purlin top board folding plate and a purlin bottom board folding plate that are fixedly integrated; a purlin top board is fixed at the upper end of the purlin main board, the purlin top board is perpendicular to the purlin main board, a purlin top board folding plate is fixed at the other end of the purlin top board, the purlin top board folding plate is inclined downward, a purlin bottom board is fixed at the lower end of the purlin main board, the purlin bottom board is perpendicular to the purlin main board, a purlin bottom board folding plate is fixed at the other end of the purlin bottom board, the purlin bottom board folding plate is inclined upward, and the purlin bottom board and the purlin top board are arranged on both sides of the purlin main board;

[0009] The connecting plate includes a connecting plate upper segment plate and a connecting plate lower segment plate that are fixedly integrated, and the connecting plate upper segment plate and the connecting plate lower segment plate are connected by an obtuse - angle bend;

[0010] The air duct fixing angle steel includes an air duct fixing angle steel horizontal plate and an air duct fixing angle steel vertical plate that are fixedly integrated;

[0011] The connecting plate upper segment plate is fixed on the side of the purlin main board through a fastening bolt and a fastening nut, the connecting plate lower segment plate is arranged vertically, and the connecting plate upper segment plate and the purlin bottom board are arranged on both sides of the purlin main board;

[0012] An air duct fixing angle steel height - adjustable installation mechanism is installed on the connecting plate lower segment plate, and an air duct fixing angle steel is installed on the air duct fixing angle steel height - adjustable installation mechanism.

[0013] Preferably, the air duct fixing angle steel height - adjustable installation mechanism includes a bolt sleeve, a bolt suspension rod and a locking nut; the bolt sleeve is welded on the side of the connecting plate lower segment plate, the bolt sleeve is arranged vertically, the upper segment of the bolt suspension rod is installed in the bolt sleeve, and a locking nut is installed at the lower end of the bolt suspension rod;

[0014] A vertical fixing hole is opened on the air duct fixing angle steel horizontal plate, the lower end of the bolt suspension rod passes through the vertical fixing hole on the air duct fixing angle steel horizontal plate, and locking nuts are installed on the bolt suspension rod above and below the air duct fixing angle steel horizontal plate respectively, and the air duct fixing angle steel horizontal plate and the bolt suspension rod are fixed together through the locking nuts.

[0015] Preferably, the height-adjustable installation mechanism of the air duct fixing angle steel includes a hanging plate, a fixing bolt and a fixing nut; the hanging plate is arranged vertically, and a plurality of hanging plate installation holes are arranged at intervals in the height direction of the hanging plate. The hanging plate installation holes are oblong holes, and the length direction of the hanging plate installation holes is the vertical direction;

[0016] A transverse fixing hole is formed in the vertical plate of the air duct fixing angle steel. The stud section of the fixing bolt passes through the hanging plate installation hole and the transverse fixing hole on the vertical plate of the air duct fixing angle steel. A fixing nut is installed on the stud section of the fixing bolt. The vertical plate of the air duct fixing angle steel and the hanging plate are fixed together through the fixing bolt and the fixing nut. Brief Description of the Drawings

[0017] Figure 1 is the front view of Embodiment 1.

[0018] Figure 2 is the left view of Embodiment 1.

[0019] Figure 3 is the front view of Embodiment 2.

[0020] Figure 4 is the left view of Embodiment 2. Detailed Embodiments

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0022] A node structure of a light steel roof hanging support hanger, as Figure 1 and Figure 2 shown, it includes a multi-laminated purlin 1, a connecting plate 2, a height-adjustable installation mechanism of the air duct fixing angle steel, an air duct fixing angle steel 3, a fastening bolt 4 and a fastening nut 5;

[0023] The purlin 1 includes a purlin main board 1.1, a purlin top board 1.2, a purlin bottom board 1.3, a purlin top board folding plate 1.4 and a purlin bottom board folding plate 1.5 which are integrally fixed; the purlin top board 1.2 is fixed at the upper end of the purlin main board 1.1, and the purlin top board 1.2 is perpendicular to the purlin main board 1.1. The purlin top board folding plate 1.4 is fixed at the other end of the purlin top board 1.2, and the purlin top board folding plate 1.4 is inclined downward. The purlin bottom board 1.3 is fixed at the lower end of the purlin main board 1.1, and the purlin bottom board 1.3 is perpendicular to the purlin main board 1.1. The purlin bottom board folding plate 1.5 is fixed at the other end of the purlin bottom board 1.3, and the purlin bottom board folding plate 1.5 is inclined upward. And the purlin bottom board 1.3 and the purlin top board 1.2 are arranged on both sides of the purlin main board 1.1;

[0024] The purlin main boards 1.1 in adjacent purlins 1 are closely arranged, the purlin top boards 1.2 in adjacent purlins 1 are closely arranged, and the purlin bottom boards 1.3 in adjacent purlins 1 are closely arranged;

[0025] The connecting plate 2 includes a connecting plate upper section plate 2.1 and a connecting plate lower section plate 2.2 which are integrally fixed, and the connecting plate upper section plate 2.1 and the connecting plate lower section plate 2.2 are connected by an obtuse-angle bend;

[0026] The air duct fixing angle steel 3 includes an air duct fixing angle steel horizontal plate 3.1 and an air duct fixing angle steel vertical plate 3.2 which are integrally fixed;

[0027] The connecting plate upper section plate 2.1 is fixed on the side of the purlin main board 1.1 through a fastening bolt 4 and a fastening nut 5. The connecting plate lower section plate 2.2 is vertically arranged, and the connecting plate upper section plate 2.1 and the purlin bottom board 1.3 are arranged on both sides of the purlin main board 1.1;

[0028] An air duct fixing angle steel height adjustable mounting mechanism is installed on the connecting plate lower section plate 2.2, and the air duct fixing angle steel 3 is installed on the air duct fixing angle steel height adjustable mounting mechanism.

[0029] The air duct fixing angle steel height adjustable mounting mechanism includes a bolt sleeve 6, a bolt suspension rod 7 and a locking nut 8; the bolt sleeve 6 is welded on the side of the connecting plate lower section plate 2.2, the bolt sleeve 6 is vertically arranged, the upper section of the bolt suspension rod 7 is installed in the bolt sleeve 6, and the locking nut 8 is installed at the lower end of the bolt suspension rod 7;

[0030] A vertical fixing hole is opened on the air duct fixing angle steel horizontal plate 3.1. The lower end of the bolt suspension rod 7 passes through the vertical fixing hole on the air duct fixing angle steel horizontal plate 3.1, and the locking nuts 8 are installed on the bolt suspension rod 7 above and below the air duct fixing angle steel horizontal plate 3.1 respectively. The air duct fixing angle steel horizontal plate 3.1 and the bolt suspension rod 7 are fixed together through the locking nuts 8.

[0031] In Example 1 during installation and use, the light steel roof panel is fixed on the top plate 1.2 of the purlin, the structural steel beam 12 supports the purlin 1, the length direction of the structural steel beam 12 is perpendicular to the length direction of the purlin 1, the upper plate 2.1 of the connecting plate is fixed on the main board 1.1 of the purlin, the bolt sleeve 6 is fixed on the side of the lower plate 2.2 of the connecting plate, the air duct fixing angle steel 3 is fixed on the bolt hanger rod 7 through the lock nut 8, and the air duct 13 is fixed on the air duct fixing angle steel 3, so that both the air duct 13 and the light steel roof panel are supported by the structural steel beam 12.

[0032] The light steel roof hanging support and hanger node structure of Example 1 has the following advantages:

[0033] 1. This embodiment makes full use of the multi - joint purlin 1 as the fixing piece of the pipeline support and hanger (the components of this pipeline support and hanger include the bolt sleeve 6, the bolt hanger rod 7 and the lock nut 8). It can not only ensure that the purlin 1 of the light steel roof can bear the weight load of various pipelines, but also avoid adding a fixed cross - beam for the pipeline support and hanger for the second time, which is beautiful and tidy, saves cost and is convenient for installation.

[0034] 2. The components of the pipeline support and hanger can be processed in a standardized way, and all components are processed in the factory. This not only greatly improves the processing quality of the components, but also improves the processing speed and reduces the processing cost.

[0035] 3. The components of the pipeline support and hanger can be produced in a modular way. The length dimension of the components increases or decreases according to a fixed modulus, making the structure of the pipeline support and hanger change flexibly. The corresponding component modulus can be selected according to the layout of the pipeline lines at the construction site, which is convenient and flexible for construction, and the processing accuracy requirement is moderate.

[0036] 4. It is convenient for modular installation. According to the required installation height at the site, the length of the components with a fixed modulus is selected. Through dry construction methods such as bolt fixing and screw - in adjustment, dust - free, no - noise and pollution - free modular installation is realized, which improves the construction efficiency, is convenient for installation operation, ensures the installation quality, and reduces the danger of high - altitude operation.

[0037] 5. It has a wide range of applications. The pipeline support and hanger is suitable for the installation of pipeline support and hanger with large span, high clear height, various types of pipelines and dense laying in buildings such as light steel roof steel structure factories and reinforced concrete metal roof factories. In addition, it can also be used for the installation requirements of pipeline support and hanger in different construction environments such as single hanger installation and comprehensive hanger installation. Example

[0038] A light steel roof hanging support and hanger node structure, as Figure 3 and Figure 4 shown, it includes a multi - joint purlin 1, a connecting plate 2, a height - adjustable installation mechanism for the air duct fixing angle steel, an air duct fixing angle steel 3, a fastening bolt 4 and a fastening nut 5;

[0039] The purlin 1 includes a purlin main board 1.1, a purlin top board 1.2, a purlin bottom board 1.3, a purlin top board folding plate 1.4 and a purlin bottom board folding plate 1.5 which are integrally fixed; the purlin top board 1.2 is fixed at the upper end of the purlin main board 1.1, and the purlin top board 1.2 is perpendicular to the purlin main board 1.1. The purlin top board folding plate 1.4 is fixed at the other end of the purlin top board 1.2, and the purlin top board folding plate 1.4 is inclined downward. The purlin bottom board 1.3 is fixed at the lower end of the purlin main board 1.1, and the purlin bottom board 1.3 is perpendicular to the purlin main board 1.1. The purlin bottom board folding plate 1.5 is fixed at the other end of the purlin bottom board 1.3, and the purlin bottom board folding plate 1.5 is inclined upward. And the purlin bottom board 1.3 and the purlin top board 1.2 are arranged on both sides of the purlin main board 1.1;

[0040] The purlin main boards 1.1 in adjacent purlins 1 are closely arranged, the purlin top boards 1.2 in adjacent purlins 1 are closely arranged, and the purlin bottom boards 1.3 in adjacent purlins 1 are closely arranged;

[0041] The connecting plate 2 includes a connecting plate upper section plate 2.1 and a connecting plate lower section plate 2.2 which are integrally fixed, and the connecting plate upper section plate 2.1 and the connecting plate lower section plate 2.2 are connected by an obtuse-angle bend;

[0042] The air duct fixing angle steel 3 includes an air duct fixing angle steel horizontal plate 3.1 and an air duct fixing angle steel vertical plate 3.2 which are integrally fixed;

[0043] The connecting plate upper section plate 2.1 is fixed on the side surface of the purlin main board 1.1 through a fastening bolt 4 and a fastening nut 5. The connecting plate lower section plate 2.2 is vertically arranged, and the connecting plate upper section plate 2.1 and the purlin bottom board 1.3 are arranged on both sides of the purlin main board 1.1;

[0044] An air duct fixing angle steel height adjustable mounting mechanism is installed on the connecting plate lower section plate 2.2, and the air duct fixing angle steel 3 is installed on the air duct fixing angle steel height adjustable mounting mechanism.

[0045] The air duct fixing angle steel height adjustable mounting mechanism includes a hanging plate 9, a fixing bolt 10 and a fixing nut 11; the hanging plate 9 is vertically arranged, and a plurality of hanging plate mounting holes 9.1 which are spaced apart are formed in the height direction of the hanging plate 9. The hanging plate mounting holes 9.1 are waist-shaped long holes, and the length direction of the hanging plate mounting holes 9.1 is the vertical direction;

[0046] A transverse fixing hole is formed in the air duct fixing angle steel vertical plate 3.2. The stud section of the fixing bolt 10 passes through the hanging plate mounting hole 9.1 and the transverse fixing hole in the air duct fixing angle steel vertical plate 3.2, and a fixing nut 11 is installed on the stud section of the fixing bolt 10. The air duct fixing angle steel vertical plate 3.2 and the hanging plate 9 are fixed together through the fixing bolt 10 and the fixing nut 11.

[0047] In Example 2 during installation and use, the light steel roof panel is fixed on the top plate 1.2 of the purlin, the structural steel beam 12 supports the purlin 1, the length direction of the structural steel beam 12 is perpendicular to the length direction of the purlin 1, the upper plate 2.1 of the connecting plate is fixed on the main plate 1.1 of the purlin, the hanging plate 9 is fixed on the side surface of the lower plate 2.2 of the connecting plate, and the air duct 13 is fixed on the air duct fixing angle steel 3, so that both the air duct 13 and the light steel roof panel are supported by the structural steel beam 12.

[0048] The light steel roof hanging support and hanger node structure of Example 2 has the following advantages:

[0049] 1. Make full use of the multi - spliced purlin 1 as the fixing part of the pipeline support and hanger (the components of this pipeline support and hanger include the hanging plate 9, the fixing bolt 10 and the fixing nut 11). It can not only ensure that the purlin of the light steel roof can bear the weight load of various pipelines, but also avoid adding a fixed cross beam for the pipeline support and hanger secondly, which is beautiful and tidy, saves cost and is convenient for installation.

[0050] 2. The components of the pipeline support and hanger can be processed in a standardized way, and all components are processed in the factory. This not only greatly improves the processing quality of the components, but also improves the processing speed and reduces the processing cost.

[0051] 3. The components of the pipeline support and hanger can be produced in a modular way. The length dimensions of the components are increased or decreased by a fixed modulus, so that the structure of the pipeline support and hanger device can change flexibly. The corresponding component modulus can be selected according to the layout of the pipeline lines at the construction site, which is convenient and flexible for construction and has a moderate requirement for processing accuracy.

[0052] 4. It is convenient for modular installation. According to the required installation height on site, the length of the components with a fixed modulus is selected. Through dry construction methods such as bolt fixing and screw - in adjustment, dust - free, no - noise and pollution - free modular installation is realized, which improves the construction efficiency, is convenient for installation operation, ensures the installation quality and reduces the danger of high - altitude operation.

[0053] 5. It has a wide range of applications. The pipeline support and hanger is suitable for the installation of pipeline support and hanger with large span, high clear height, various types of pipelines and dense laying in buildings such as light steel roof steel structure workshops and reinforced concrete metal roof workshops. In addition, it can also be used for the installation requirements of pipeline support and hanger in different construction environments such as single - hanger installation and comprehensive - hanger installation.

[0054] Finally, it should be noted that the above - mentioned specific implementation manners are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A light steel roof hanging bracket node structure, characterized by: It comprises a multi-piece purlin (1), a connecting plate (2), a height-adjustable installation mechanism for an air duct fixing angle steel, an air duct fixing angle steel (3), a fastening bolt (4) and a fastening nut (5); The purlin (1) comprises a purlin main plate (1.1), a purlin top plate (1.2), a purlin bottom plate (1.3), a purlin top plate folding plate (1.4) and a purlin bottom plate folding plate (1.5) which are fixed integrally; the purlin top plate (1.2) is fixed at the upper end of the purlin main plate (1.1), the purlin top plate (1.2) is arranged vertically with the purlin main plate (1.1), the purlin top plate folding plate (1.4) is fixed at the other end of the purlin top plate (1.2), and the purlin bottom plate folding plate (1.5) is fixed at the upper end of the purlin main plate (1.1). The plate folding plate (1.4) is arranged downwardly in an inclined manner, a purlin bottom plate (1.3) is fixed to the upper end of the purlin main plate (1.1), the purlin bottom plate (1.3) and the purlin main plate (1.1) are arranged vertically, a purlin bottom plate folding plate (1.5) is fixed to the other end of the purlin bottom plate (1.3), the purlin bottom plate folding plate (1.5) is arranged upwardly in an inclined manner, and the purlin bottom plate (1.3) and the purlin top plate (1.2) are arranged on both sides of the purlin main plate (1.1); The connecting plate (2) comprises an upper connecting plate section (2.1) and a lower connecting plate section (2.2) which are fixedly connected to each other, and the upper connecting plate section (2.1) and the lower connecting plate section (2.2) are connected to each other at an obtuse angle; The air duct fixed angle steel (3) comprises an air duct fixed angle steel horizontal plate (3.1) and an air duct fixed angle steel vertical plate (3.2) which are fixed in one piece; The connecting plate upper plate (2.1) is fixed to the side of the purlin main plate (1.1) by means of fastening bolts (4) and fastening nuts (5); the connecting plate lower plate (2.2) is arranged vertically; the connecting plate upper plate (2.1) and the purlin bottom plate (1.3) are arranged on both sides of the purlin main plate (1.1); A height-adjustable installation mechanism for the air duct fixed angle steel is installed on the lower section plate (2.2) of the connecting plate, and an air duct fixed angle steel (3) is installed on the height-adjustable installation mechanism for the air duct fixed angle steel.

2. The node structure of the light steel roof under-hanging support bracket as claimed in claim 1 is characterized by: The height-adjustable installation mechanism for the air duct fixed angle steel comprises a bolt sleeve (6), a bolt hanger (7) and a locking nut (8); the bolt sleeve (6) is welded to the side surface of the lower section plate (2.2) of the connecting plate, the bolt sleeve (6) is arranged vertically, the upper section of the bolt hanger (7) is installed in the bolt sleeve (6), and the locking nut (8) is installed at the lower end of the bolt hanger (7); A vertical fixing hole is provided on the air duct fixing angle steel horizontal plate (3.1), and the lower end of the bolt hanger (7) passes through the vertical fixing hole on the air duct fixing angle steel horizontal plate (3.1). The bolt hangers (7) above and below the corresponding air duct fixing angle steel horizontal plate (3.1) are both installed with locking nuts (8), and the air duct fixing angle steel horizontal plate (3.1) and the bolt hangers (7) are fixed together by the locking nuts (8).

3. The node structure of the light steel roof under-hanging support bracket according to claim 1 is characterized in that: The height-adjustable installation mechanism for the air duct fixed angle steel comprises a hanging plate (9), a fixing bolt (10) and a fixing nut (11); the hanging plate (9) is arranged vertically, and a plurality of hanging plate installation holes (9.1) arranged at intervals are opened in the height direction of the hanging plate (9); the hanging plate installation holes (9.1) are waist-shaped long holes, and the length direction of the hanging plate installation holes (9.1) is the vertical direction; A transverse fixing hole is provided on the duct fixing angle steel vertical plate (3.2); the stud section of the fixing bolt (10) passes through the hanger plate mounting hole (9.1) and the transverse fixing hole on the duct fixing angle steel vertical plate (3.2); a fixing nut (11) is installed on the stud section of the fixing bolt (10); the duct fixing angle steel vertical plate (3.2) and the hanger plate (9) are fixed together by the fixing bolt (10) and the fixing nut (11).