A hoop assembly is secured to a trunk support of a truss

Abstract

The application discloses a wind pipe support of a truss with a hoop assembly fixed thereon, comprising a hoop piece, a support and a protection piece; the hoop piece is fixed at the top chord / bottom chord of the truss, the hoop piece is divided into a double-hole hoop fixed at the top chord of a sub-truss and a single-hole hoop fixed at the bottom chord of a main truss; the support is fixedly arranged at the bottom of the hoop piece through an adjusting piece, the support can be connected with the single-hole hoop and the double-hole hoop respectively, and a plurality of pipe clamps are arranged on the support; the protection piece is arranged at the inner side of the hoop piece and directly contacts the truss, the protection piece can be wrapped around the truss and attached to the truss; the hoop piece is arranged in the mode of being additionally arranged, so that a fixing point between wind pipes can be provided, the protection piece is arranged, so that the effect of preventing the fireproof layer from being scratched when the hoop piece is tightly wrapped around the truss can be achieved, and the support is arranged, so that the wind pipes can be effectively arranged in order and the disorder of the wind pipes during installation can be avoided, and the appearance can be improved.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and more specifically, to a clamp assembly for fixing a duct support to a truss. Background Technology

[0002] With the development of my country's economy and the continuous progress of science and technology, large-span spatial steel structures of various shapes have been widely used in buildings such as stadiums, convention centers, theaters, large shopping malls, airports and train stations.

[0003] As a new type of energy-saving and environmentally friendly green building system, steel structure is increasingly being used in large-scale sports and exhibition projects for complex designs. However, the installation of trusses and ducts in large-scale sports and exhibition buildings greatly increases the difficulty of building electromechanical installation.

[0004] Welding is not allowed on the upper and lower chords of the main truss of the steel structure, because welding will affect the stress, so traditional welding connection methods cannot be used. Summary of the Invention

[0005] The purpose of this invention is to provide a duct support that is fixed to a truss with a clamp assembly, which enables the duct to be installed on a large steel truss system in a complete, aesthetically pleasing and intact manner without damaging the steel truss system.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a duct support fixed to a truss by a clamp assembly, comprising a clamp, a support, an adjusting component, and a protective component.

[0007] The truss system is divided into a main truss with an inverted triangular structure and a secondary truss with an upright triangular structure.

[0008] Clamping components are divided into single-hole clamps suitable for main trusses and double-hole clamps suitable for secondary trusses;

[0009] A single-hole clamp comprises a circular part and a triangular part integrally formed at the bottom of the circular part. The triangular part is provided with a fixing hole for the adjusting part to pass through. At least two single-hole clamps are respectively fixed to at least two adjacent or alternate spans located at the lower chord of the main truss.

[0010] The double-hole clamp is formed by the combination and connection of the arch and U-shaped parts; the duct is fixed to the upper chord of the sub-truss by the double-hole clamp;

[0011] The bracket is fixedly installed at the bottom of the clamp by an adjusting component. The bracket can be connected to a single-hole clamp and a double-hole clamp respectively. The bracket is provided with multiple pipe clamps.

[0012] The protective component is disposed on the inner side of the clamp and in direct contact with the truss. The protective component can wrap around the truss and can be attached to the truss.

[0013] Adjustable components allow for easy fixation of the duct after installation and provide a self-locking bracket.

[0014] Because current construction requirements require ensuring that the fireproof layer installed on the truss is not damaged and that there is no heat treatment fixing or alteration to the truss structure itself.

[0015] This solution provides fixing points between ducts by installing clamps. The use of protective components effectively prevents the clamps from scratching the fireproof layer when tightening the truss. The use of brackets effectively and neatly arranges the ducts, avoiding a messy appearance during duct installation.

[0016] The present invention is further configured such that: the support includes a rectangular frame structure composed of horizontal bars and vertical bars, wherein the top horizontal bar of the rectangular frame structure is connected to the double-hole clamp via a hanger.

[0017] Only by using a rectangular frame structure with double-hole clamps can the support stably bear the weight of the air duct, and only the rigidly connected rectangular frame structure can guarantee its rigidity requirements and prevent it from swaying.

[0018] The present invention is further configured such that: multiple pipe clamps are provided on the bottom crossbar of the rectangular frame structure.

[0019] By using multiple pipe clamps, multiple ducts can be fixed according to usage requirements.

[0020] The present invention is further configured such that: the support includes a crossbar, wherein a plurality of pipe clamps are provided in the middle of the crossbar.

[0021] The use of a crossbar structure is to ensure that the air ducts can be fixed at the bottom of the long-span truss.

[0022] The present invention is further configured such that: the two ends of the crossbar are respectively connected to two adjacent single-hole clamps.

[0023] By using a single-hole clamp, the hanger rod only needs to be passed through the single hole and connected to one end of the crossbar to achieve fixation. Both ends of the crossbar are fixed by the above structure, thus forming a good fixing effect. Because the hanger rod and the crossbar are rigidly connected and the material is also rigid, it can be guaranteed that it will not wobble.

[0024] The invention is further configured such that the protective component is a rubber ring that can be glued end to end.

[0025] By using rubber rings that are glued together end to end, the installation process can be optimized for high-altitude operations, making the installation simpler and preventing situations that require coordination, thereby avoiding more accidents. It can also solve the problem of damage to the fire-retardant paint on the truss when fixing metal parts to the truss.

[0026] The present invention is further configured such that the suspension rod is a fully threaded rod.

[0027] By using all-screw screws, we can ensure the simplest installation method during use. The simplest mechanical structure is also the most robust, the most durable, the easiest to find suitable parts for, and the most economical structure, thus avoiding uncontrollable situations caused by complex installation methods.

[0028] The present invention is further configured such that when the clamp is fixed at the upper chord of the sub-truss, the steps are as follows:

[0029] Step S1: Weld the horizontal and vertical bars of the support frame to form a rectangular frame structure on the ground;

[0030] Step S2: Install the pipe clamps on the ground within the rectangular frame of the rectangular frame structure according to the spacing and quantity of the ductwork;

[0031] Step S3: Install the double-hole clamp on the upper chord of the sub-truss, and insert two downward hanging rods at the bottom of the double-hole clamp;

[0032] Step S4: The assembled support frame on the ground is fixedly connected to the bottom of the hanger rod with bolts. The balance of the support frame is adjusted by adjusting the bolts on the hanger rod.

[0033] Step S5: When installing the duct, insert it into the pipe clamp set inside the rectangular frame structure of the bracket, and after attaching / clamping the anti-slip rubber pad on the contact surface between the duct and the pipe clamp, tighten the fixing bolts between the pipe clamp and the rectangular frame structure.

[0034] By adopting the above installation steps, the bracket can be fixed first, and the height of each lowest part of the bracket can be adjusted, so as to achieve a faster and more aesthetically pleasing fixing effect. The tilt of the bracket can also be adjusted.

[0035] The present invention is further configured such that when the clamp is fixed at the lower chord of the main truss, the steps are as follows:

[0036] Step S1: Install the pipe clamps on the crossbars of the bracket on the ground according to the spacing and quantity of the ductwork;

[0037] Step S2: Install a single-hole clamp on the lower chord of each of the two adjacent / interval inverted triangular tube trusses, and insert a downward hanging rod into the bottom of each single-hole clamp;

[0038] Step S3: The length of the hanger depends on the height of the lower chord of the main truss, and the bottom of the support is at the same horizontal level after installation;

[0039] Step S4: Fix the two ends of the completed support frame assembled on the ground to the hanging rods from step 2 respectively;

[0040] Step S5: When installing the duct, insert it into the pipe clamp set on the crossbar of the support, and after attaching / clamping the anti-slip rubber pad on the contact surface between the duct and the pipe clamp, tighten the fixing bolt between the pipe clamp and the crossbar.

[0041] By installing a hanger and a single-hole clamp at each end of the crossbar, the two ends of the crossbar can be effectively fixed to the adjacent main truss, forming a fixed position for the air duct. Furthermore, the presence of the full-thread hanger can effectively adjust the height difference between the two trusses and make the transition area between them smoother.

[0042] In summary, the present invention has the following beneficial effects: by using an additional clamping method to set the clamping parts, a fixing point can be provided between the air ducts; by using protective parts, the fireproof layer can be effectively prevented from being scratched when the clamping parts are tightened on the truss; and by setting the bracket, the air ducts can be arranged neatly and effectively, avoiding the messiness of the air duct installation and affecting the aesthetics. Attached Figure Description

[0043] Figure 1 This is a schematic diagram of the installation of the air duct fixed on the sub-truss in Embodiment 1 of the present invention;

[0044] Figure 2 This is a schematic diagram of the installation of the air duct fixed on the inverted triangular truss in Embodiment 1 of the present invention;

[0045] Figure 3 This is Embodiment 1 of the present invention. Figure 1 A close-up view of the installation location of the central duct;

[0046] Figure 4 This is Embodiment 1 of the present invention. Figure 2 A close-up view of the installation location of the central duct;

[0047] Figure 5 This is in Embodiment 1 of the present invention Figure 1 Enlarged view of point A in the middle;

[0048] Figure 6 This is in Embodiment 1 of the present invention Figure 2 Enlarged view at point B in the middle;

[0049] Figure 7 This is a schematic diagram of the double-hole clamp in Embodiment 1 of the present invention;

[0050] Figure 8This is a schematic diagram of the single-hole clamp in Embodiment 1 of the present invention;

[0051] Figure 9 This is a schematic diagram of the structure of the suspension rod in Embodiment 1 of the present invention;

[0052] Figure 10 This is a schematic diagram of the connection between the suspension rod and the bracket in Embodiment 4 of the present invention;

[0053] Figure 11 This is a schematic diagram of the structure of the crossbar of the support in Embodiment 5 of the present invention;

[0054] Figure 12 This is in embodiment 5 of the present invention. Figure 11 Enlarged view of point C;

[0055] Figure 13 This is a cross-sectional view of the rotating block in Embodiment 5 of the present invention.

[0056] In the picture:

[0057] 1. Clamping parts;

[0058] 11. Single-hole clamp; 111. Circular component; 1111. First fixing plate; 112. Triangular component; 1121. Second fixing plate; 113. Connecting plate;

[0059] 12. Double-hole clamp; 121. Door arch component; 122. U-shaped component;

[0060] 2. Hanging rod;

[0061] 3. Support; 31. Crossbar; 311. Slide groove; 312. Slider; 3121. Rotating block; 32. Vertical bar; 33. Pipe clamp. Detailed Implementation

[0062] The following is in conjunction with the appendix Figure 1-6 The present invention will be described in further detail below.

[0063] Example 1

[0064] As a new type of energy-saving and environmentally friendly green building system, steel structure is increasingly being used in large-scale sports and exhibition projects for complex designs. However, the installation of trusses and ducts in large-scale sports and exhibition buildings greatly increases the difficulty of building electromechanical installation. Furthermore, the upper and lower chords of the main truss of the steel structure cannot be welded, as this would affect the stress. Therefore, traditional welding connection methods cannot be used.

[0065] like Figure 1 , Figure 2 As shown, a clamp assembly is fixed to the duct support 3 of the truss, including a clamp, a support 3, a hanger 2, and a protective component.

[0066] In order to avoid using heat treatment methods such as welding to fix the support 3 on the truss, and because it was found during the construction of the conference center of the Xiamen New International Convention and Exhibition Center that the internal trusses are roughly divided into two types: secondary trusses and inverted triangular trusses, with the inverted triangular truss being the main truss, and multiple structural steel beams are irregularly and unevenly interspersed inside, according to the on-site analysis, it is impossible to lay / install air ducts inside.

[0067] To address the issue of the inability to weld the truss mentioned above, this solution employs a mechanical fixing method. Since the truss steel pipes come in various steel pipe structures, such as square steel pipes and round steel pipes, this solution utilizes clamps of various specifications and shapes for selection.

[0068] The clamp 1 is installed on the upper / lower chord of the truss. The clamp 1 is divided into a double-hole clamp 12 fixed on the upper chord of the secondary truss and a single-hole clamp 11 fixed on the lower chord of the main truss.

[0069] The space at the bottom of the lower chord of the sub-truss is insufficient to place the air duct and its ancillary structures, but the air duct can pass through and be placed inside the frame of the sub-truss;

[0070] The most stable position is to suspend the duct at the upper chord of the sub-truss. The web members include vertical members 32 and diagonal members. First, the load-bearing capacity of the web members is much smaller than that of the chord members. Second, since the web members are installed at an angle as a whole, if the clamps are placed on the web members, they may slip due to long-term heavy loads. Therefore, the fixing points need to be placed on the chord members.

[0071] In order for the clamp 1 to stably support the support 3, the most stable method is to use a triangular method for fixing and suspending, so as to ensure its stability during use. Therefore, a double-hole clamp 12 with two lifting holes at the bottom for the hanger 2 to pass through is used on the sub-truss.

[0072] As shown in the figure, the double-hole clamp 12 is a split structure. Its top structure is a U-shaped piece 122 and its bottom structure is a door arch piece 121. The two are fixed together by corresponding through holes on their side walls and a fixing bolt is installed in the through hole to form a complete clamp, thus forming the structure shown in the figure.

[0073] Among them, the bottom two corners of the arch component 121 are provided with chamfered plates, which are inclined plates, and have holes of the same diameter for the suspension rod 2 to pass through.

[0074] The main truss is generally an inverted triangular truss, but it may also be trapezoidal or other structures. Since its internal space is usually small, the fixing point needs to be set at the lower chord of the main truss.

[0075] The clamp 1 fixed on the lower chord needs to be fixed vertically, so the bottom of the clamp 1 only needs a vertically downward lifting hole;

[0076] The top of the single-hole clamp 11 is provided with a circular part 111. The circular part 111 has a circular structure with an opening at the bottom. A connecting plate 113 is provided on one side of the opening, and a first fixing plate 1111 is provided on the other side. The other end of the connecting plate 113 is connected to the top of the triangular part 112.

[0077] The top of the triangular piece 112 is open, one end of which is connected to one of the fixing plates of the circular structure, and the other end of the opening of the triangular piece 112 is provided with a second fixing plate 1121;

[0078] The connecting plate 113, the first fixing plate 1111, and the second fixing plate 1121 are all provided with fixing holes in the middle. The connecting plate 113, the first fixing plate 1111, and the second fixing plate 1121 are tightly abutted together by fixing bolts passing through the fixing holes.

[0079] The bracket 3 is fixedly installed at the bottom of the clamp 1 by means of an adjusting component. The bracket 3 can be connected to the single-hole clamp 11 and the double-hole clamp 12 respectively. Multiple pipe clamps 33 are fixedly installed on the bracket 3 according to design requirements.

[0080] The protective component is located inside the clamp 1 and is in direct contact with the truss. The protective component can wrap around the truss and can be attached to the truss. The protective component is a rubber ring that can be glued end to end, and the two ends of the rubber ring are provided with adhesive.

[0081] The adjusting component is rod 2, which is a threaded rod.

[0082] As a preferred embodiment, as shown in the figure, the lifting rod 2 is a threaded rod with fixing bolts at both ends. Alternatively, the lifting rod 2 may have a limit head at one end, a threaded rod at the other end, and a fixing bolt at the other end.

[0083] The air duct is fixed to the upper chord of the secondary truss by double-hole clamps 12;

[0084] The main truss is fixed to two adjacent / alternating spans and located at the lower chord of the main truss by at least two single-hole clamps 11.

[0085] As shown in the figure, the bracket 3 includes a rectangular frame structure composed of a horizontal bar 31 and a vertical bar 32. The top horizontal bar 31 of the rectangular frame structure is connected to the double-hole clamp 12 through the hanger 2.

[0086] Multiple pipe clamps 33 are installed on the bottom crossbar 31 of the rectangular frame structure to fix the air duct to the upper chord of the sub-truss.

[0087] The support 3 includes a crossbar 31, wherein a plurality of pipe clamps 33 are provided in the middle of the crossbar 31.

[0088] A suspension rod 2 perpendicular to the horizontal bar 31 is set at each end of the horizontal bar 31. A single-hole clamp 11 is set at the other end of the suspension rod 2. The two single-hole clamps 11 are fixed at the lower chord of the two adjacent trusses, thereby realizing the span hoisting.

[0089] Example 2

[0090] A method for fixing a clamp assembly to a duct support of a truss includes an installation method for a secondary truss with an equilateral triangular structure and an installation method for a main truss with an inverted triangular structure.

[0091] When clamp 1 is fixed to the upper chord of the sub-truss, the steps are as follows:

[0092] Step S1: Weld the horizontal bar 31 and the vertical bar 32 of the support 3 to form a rectangular frame structure on the ground;

[0093] Step S2: Install the pipe clamps 33 on the ground within the rectangular frame of the rectangular frame structure according to the spacing and quantity of the ductwork;

[0094] Step S3: Install double-hole clamps 12 on the upper chord of the sub-truss, and insert two downward hanging rods 2 at the bottom of the double-hole clamps 12;

[0095] Step S4: The completed support frame 3, assembled on the ground, is fixedly connected to the bottom of the tie rod using bolts;

[0096] Step S5: When installing the duct, insert it into the pipe clamp 33 set inside the rectangular frame structure of bracket 3, and after attaching / clamping the anti-slip rubber pad on the contact surface between the duct and the pipe clamp 33, tighten the fixing bolts between the pipe clamp 33 and the rectangular frame structure.

[0097] When clamp 1 is fixed to the lower chord of the main truss, the steps are as follows:

[0098] Step S1: Install the pipe clamps 33 on the crossbars 31 of the bracket 3 on the ground according to the spacing and quantity of the ductwork;

[0099] Step S2: Install a single-hole clamp 11 on the lower chord of each of the two adjacent / interval inverted triangular tube trusses, and insert a downward hanging rod 2 into the bottom of each single-hole clamp 11.

[0100] Step S3: The length of the hanger 2 depends on the height of the lower chord of the main truss. After installation, the bottom of the bracket 3 is at the same horizontal level.

[0101] Step S4: Fix the two ends of the completed support frame 3 assembled on the ground to the hanging rod 2 from step 2 respectively;

[0102] Step S5: When installing the duct, insert it into the pipe clamp 33 set on the crossbar 31 of the bracket 3, and after attaching / clamping the anti-slip rubber pad on the contact surface between the duct and the pipe clamp 33, tighten the fixing bolt between the pipe clamp 33 and the crossbar 31.

[0103] When the duct passes through the equilateral triangle position of the truss, the space inside the secondary truss is sufficient for most of the duct to pass through. In order to solve the above technical problems, a single clamp 1 is used in conjunction with the hanger 2 and the bracket 3 to achieve fixation. The clamp 1 is fixed to the upper chord of the secondary truss to achieve the fixation effect.

[0104] When the duct passes through the inverted triangle position of the truss, the inverted triangle truss is generally the main truss. The main truss has many structural chords, and its internal space is insufficient to install the duct or allow the duct to pass through. In order to solve the above problems, two clamps 1 are fixed to the lower chords of two adjacent inverted triangle trusses respectively. This can fix the duct in the simplest way and also facilitate adjustment.

[0105] Example 3

[0106] The difference between Example 3 and Examples 1 and 2 is that, based on the duct installation spacing calculated by BIM technology, the duct spacing is first arranged on the ground, and then installed by overall hoisting. In the actual work case of the Xiamen New International Convention and Exhibition Center, the splicing, assembly, and maintenance of traditional ducts are all high-altitude operations with a high risk factor. Since this solution involves the installation of new ducts, the duct system also needs to be coordinated with the main building structure and interior decoration construction, which can easily lead to multiple back-to-back maintenance issues.

[0107] This solution adopts overall splicing and hoisting. After the air duct is hoisted as a whole using large machinery, it is fixed sequentially starting from the end of the air duct. The angle and dimensions of the air duct installation position are reconfirmed through the installation instructions for each part of the fixed air duct.

[0108] Debugging and connecting the various duct sections are major challenges in duct installation.

[0109] To ensure that the duct can be adjusted and moved again after installation, the duct in this solution is fixed with pipe clamps (33) to facilitate secondary adjustments. The duct has both flexible and rigid components.

[0110] During construction, flexible ducts can be fixed in stages, that is, fixed with multiple clamps 33 at intervals, so that a part in the middle has a stretching margin, and finally achieves partial movement. This allows for a margin when the duct ends are connected. After connection, the clamps 1 and 33 are adjusted in turn.

[0111] During construction, when connecting rigid air ducts, only the pipe clamps 33 at both ends of the unit section need to be tightened, which makes it easier to connect two adjacent air duct units. Simply tighten or loosen the pipe clamps 33 to connect the two unit air ducts.

[0112] Example 4

[0113] The difference between Example 4 and Examples 1, 2, and 3 is that, in order to solve the problem of possible swaying after the duct is installed, the hanger 2 is composed of two parts: the part connected to the clamp 1 is a straight rod, and the part connected to the bracket 3 is an arc-shaped rod.

[0114] The fixing holes on bracket 3 are strip-shaped;

[0115] like Figure 10 After the arc-shaped rod passes through the fixing hole on the support and is fixed at one end of the clamp 1, the bracket 3 can form a self-locking effect. When the arc-shaped rod passes through the fixing hole of the bracket 3, the arc shape of the rod and the strip-shaped fixing hole form a stable anti-shaking structure.

[0116] With the above settings, because the rod has a self-locking function after it is fixed, it can effectively temporarily fix the bracket 3 during installation, thereby solving the problem of temporary fixation during installation. Only one fixing nut needs to be set at the end of the arc rod to prevent it from falling off, instead of directly tightening it.

[0117] When a portion of bracket 3 is misaligned and fine-tuning is required for duct installation, the holes on bracket 3 are strip-shaped structures. By moving a portion of bracket 3 upwards, fine-tuning can be achieved. When left or right movement is required but the height cannot be changed, the curvature of the arc-shaped portion can be bent to achieve a certain range of offset.

[0118] If the second bending of the rod cannot be performed, the construction worker can set the arc-shaped rod section to achieve the effect of left and right offset.

[0119] Example 5

[0120] The difference between Example 5 and Example 4 is that the current difficulty in duct installation is that secondary adjustments after installation are very inconvenient. When making detailed adjustments, multiple points often need to be constructed and coordinated at the same time to ensure that the duct is installed "horizontally and vertically" and aesthetically pleasing, that is, the visual effect after the duct is installed.

[0121] To more easily solve the problem of ducts being unable to move left or right after installation, such as Figure 13 As shown, a slider 312 that can slide within the aforementioned strip-shaped fixing hole is added;

[0122] A rotating block 3121 is provided in the middle of the slider 312 for the rotating block 3121 to have an arc-shaped through hole for the arc-shaped rod to pass through.

[0123] As a preferred option: to accommodate the installation of curved and straight rods, such as Figure 13 As shown, the rotating block 3121 is also provided with a straight hole that communicates with the arc-shaped hole, so that the arc-shaped hole can be adapted to the arc-shaped rod part and the straight hole part can be adapted to the straight rod part, thus providing a wider range of adjustment.

[0124] When the arc-shaped rod is fixedly connected to the clamp 1, it can be connected to the straight hole through the straight rod part to achieve the maximum range of left and right movement after installation;

[0125] When the arc-shaped rod is fitted and connected to the arc-shaped hole, it can limit the range of left and right movement of the bracket 3 to a certain extent compared to the fit between the straight hole and the straight rod.

[0126] When the relative position of slider 312 and arc rod is fixed by nut, the height of the air duct can be determined;

[0127] Once the height is determined, sufficient lateral clearance will be provided when the duct connects to other ducts to facilitate subsequent duct connections.

[0128] After installation using the above method, the aesthetic issues of duct installation can be more easily overcome by adjusting the left-right range and up-down height of bracket 3.

[0129] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A clamp assembly for fixing a duct support to a truss, characterized in that: The truss system is divided into a main truss with an inverted triangular structure and a secondary truss with an upright triangular structure. The clamping components (1) are divided into single-hole clamps (11) suitable for main trusses and double-hole clamps (12) suitable for secondary trusses. A single-hole clamp (11) comprises a circular part (111) and a triangular part (112) integrally formed at the bottom of the circular part (111). The triangular part (112) is provided with a fixing hole for the adjustment part to pass through. The main truss is fixed to at least two adjacent or alternate spans and located at the lower chord of the main truss by at least two single-hole clamps (11). The double-hole clamp (12) is formed by combining and connecting the arch member (121) and the U-shaped member (122); the air duct is fixed to the upper chord of the sub-truss by the double-hole clamp (12); The bracket (3) is fixedly installed at the bottom of the clamp (1) by means of an adjusting member. The bracket (3) can be connected to the single-hole clamp (11) and the double-hole clamp (12) respectively. The bracket (3) is provided with multiple pipe clamps (33). The bracket (3) includes a rectangular frame structure composed of a horizontal bar (31) and a vertical bar (32). The top horizontal bar (31) of the rectangular frame structure is connected to the double-hole clamp (12) by means of a hanging rod (2). The protective component is disposed on the inner side of the clamp (1) and in direct contact with the truss. The protective component can wrap around the truss and can be attached to the truss. Adjustable components that allow for easy fixing of the duct after installation and provide self-locking brackets; The two ends of the crossbar (31) are connected to two adjacent single-hole clamps (11) by the hanger (2); the hanger (2) is composed of two sections, one of which is a straight rod connected to the clamp (1) and the other of which is an arc rod connected to the bracket (3); the fixing hole provided on the bracket (3) is strip-shaped. A slider (312) that can slide inside the aforementioned strip-shaped fixing hole is added. A rotating block (3121) is provided in the middle of the slider (312). The rotating block (3121) has an arc-shaped through hole in the middle for the arc rod to pass through. The rotating block (3121) also has a straight hole that communicates with the arc-shaped hole, so that the arc-shaped hole can be used to fit the arc rod part and the straight hole part can be used to fit the straight rod part.

2. The duct support for fixing a clamp assembly to a truss according to claim 1, characterized in that: Multiple pipe clamps (33) are provided on the bottom crossbar (31) of the rectangular frame structure.

3. The clamp assembly for fixing the duct support (3) of the truss according to claim 1, characterized in that: Multiple pipe clamps (33) are provided in the middle of the crossbar (31).

4. A clamp assembly for fixing a duct support to a truss according to any one of claims 1-3, characterized in that: The protective component is a rubber ring that is glued end to end.

5. The duct support for fixing a clamp assembly to a truss according to claim 1, characterized in that: The lifting rod (2) is a threaded rod.

6. A method for fixing a clamp assembly to a duct support of a truss according to claim 1, characterized in that, When the clamp (1) is fixed at the upper chord of the sub-truss, the steps are as follows: Step S1: Weld the horizontal bar (31) of the support (3) and the vertical bar (32) of the support (3) to form a rectangular frame structure on the ground; Step S2: Install the pipe clamps (33) on the ground according to the spacing and quantity of the ductwork; Step S3: Install the double-hole clamp (12) on the upper chord of the sub-truss and insert two downward hanging rods (2) at the bottom of the double-hole clamp (12); Step S4: The completed bracket (3) assembled on the ground is fixedly connected to the bottom end of the tie rod with bolts; Step S5: When installing the duct, insert it into the pipe clamp (33) set inside the rectangular frame structure of the bracket (3), and after pasting / clamping the anti-slip rubber pad on the contact surface between the duct and the pipe clamp (33), tighten the fixing bolt between the pipe clamp (33) and the rectangular frame structure.

7. The method for fixing a clamp assembly to a duct support of a truss according to claim 1, characterized in that: When the clamp (1) is fixed at the lower chord of the main truss, the steps are as follows: Step S1: Install the pipe clamps (33) on the crossbars (31) of the bracket (3) on the ground according to the spacing and number of ducts; Step S2: Install a single-hole clamp (11) on the lower chord of two adjacent / interval inverted triangular tube trusses respectively, and insert a downward hanging rod (2) into the bottom of the single-hole clamp (11) respectively; Step S3: The length of the hanger (2) depends on the height of the lower chord of the main truss, and the bottom of the bracket (3) is at the same horizontal level after installation; Step S4: Fix the two ends of the completed support frame (3) assembled on the ground to the hanging rod (2) in step 2 respectively; Step S5: When installing the duct, insert it into the pipe clamp (33) set on the crossbar (31) of the bracket (3), and after pasting / clamping the anti-slip rubber pad on the contact surface between the duct and the pipe clamp (33), tighten the fixing bolt between the pipe clamp (33) and the crossbar (31).

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