Fastener mounting and connecting device for warm ventilation pipeline and application method of fastener mounting and connecting device

By combining vertical and lateral adjustment mechanisms, efficient adjustment and stable clamping of HVAC pipe connection fasteners are achieved, solving the size adaptability and stability problems of existing devices and improving the convenience and stability of HVAC pipe installation.

CN119289173APending Publication Date: 2025-01-10SHANGHAI INSTALLATION ENGINEERING GROUP CO LTD
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Patent Information

Application Number
CN202411513455.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-01-10

AI Technical Summary

Technical Problem

Existing HVAC duct connection fasteners are not easy to adjust for different sizes of HVAC ducts, and the limiting effect is not obvious, resulting in inconvenient installation and poor stability.

Method used

The HVAC duct installation and connection fastener device adopts a vertical adjustment mechanism and a side adjustment mechanism. The vertical adjustment mechanism adjusts the longitudinal dimension of the clamping, and the side adjustment mechanism adjusts the lateral dimension of the clamping. Combined with L-shaped clamping grooves and screw connections, it can achieve efficient adjustment and stable clamping of HVAC ducts.

Benefits of technology

The fastener device has improved versatility and practicality, ensuring stable connection of HVAC pipes in different sizes, preventing pipes from rolling around and enhancing connection stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a heating and ventilation pipeline mounting and connecting fastener device which is used for clamping a heating and ventilation pipeline and comprises an L-shaped base, a vertical adjusting mechanism and two side adjusting mechanisms. One end of the base is connected with the vertical adjusting mechanism, the other end of the base and the other end of the vertical adjusting mechanism are respectively connected with a group of side adjusting mechanisms, and the whole is C-shaped; the vertical adjusting mechanism is used for adjusting the longitudinal clamping size; the two sets of side adjusting mechanisms are used for adjusting the clamping transverse size. The distance between the top clamping plate and the base can be adjusted through the vertical adjusting mechanism, and the height position of the top clamping plate can be adjusted. The distance between the side clamping plate and the base and the distance between the side clamping plate and the top clamping plate are adjusted through the side adjusting mechanism according to needs, heating and ventilation pipelines of different sizes are fastened, and the universality and practicability of the fastener device are improved. And the surfaces of the clamping grooves are sawtooth-shaped, so that the clamping grooves achieve an effective pulling anti-skid effect on the outer wall of the heating and ventilation pipeline, the heating and ventilation pipeline is prevented from rolling randomly after being clamped, and the fastening stability is improved.
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Description

Technical Field

[0001] The invention belongs to the technical field of heating and ventilation pipes, and in particular relates to a heating and ventilation pipe installation and connection fastener device. Background Art

[0002] HVAC pipes have a wide range of applications. Purification system return air ducts, central air conditioning ventilation ducts, industrial supply and exhaust ventilation ducts, environmental protection system suction and exhaust ducts, mining gas extraction pipes, mining rubber cloth air ducts, the thickness and specifications of HVAC pipes can be changed according to requirements. Usually when connecting, the ends of the air ducts are always connected to accessories such as elbows and reducers. Under normal circumstances, there are no grooves and sealing rings at both ends of the HVAC pipes. HVAC is a general term for heating and ventilation. The design of heating and ventilation in architectural design is called HVAC design. All equipment related to heating and ventilation, such as air conditioners, ventilation ducts, control equipment, water heating boilers, pipes, radiators and electric heating equipment that use air as a heat medium, are generally called HVAC equipment. The recently popular HVAC is a new type of HVAC equipment, which is actually a small system central air conditioner. Its advantages solve both the heating and cooling problems and the air treatment problems. It can process air and create a more comfortable indoor environment. However, during the installation of HVAC equipment, it is inevitable to use pipes to transport gas. Due to the length of the pipes and environmental issues, multiple pipes often need to be pieced together. Therefore, connecting pipes are needed between pipes to connect the pipes.

[0003] However, it still has the following disadvantages in actual use:

[0004] 1. The existing HVAC pipe connection fastener device is not convenient to adjust and use according to HVAC pipes of different sizes. Instead, fasteners of different sizes and models of HVAC pipes need to be produced and carried separately, which increases the cost and is not universal. At the same time, if the fastener model carried does not match the HVAC pipe model connected, it cannot be installed, which brings great inconvenience to the installation and reduces the practicality of the fastener device;

[0005] 2. The limiting effect of the existing HVAC pipe fastener device is not obvious, and the pipe is easy to rotate inside the fastener, affecting the stability of the connection.

[0006] Therefore, the existing HVAC pipe connection fastener devices cannot meet the needs in actual use, so there is an urgent need for improved technology in the market to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide a heating and ventilation duct installation and connection fastener device and an application method thereof, which can efficiently adjust a clamping assembly through a vertical adjustment mechanism and a lateral adjustment mechanism.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A heating and ventilation duct installation and connection fastener device is used to clamp the heating and ventilation duct, including an L-shaped base, a vertical adjustment mechanism, and two sets of side adjustment mechanisms; one end of the base is connected to the vertical adjustment mechanism, and the other end of the base and the other end of the vertical adjustment mechanism are respectively connected to a set of side adjustment mechanisms, forming a C shape as a whole; the vertical adjustment mechanism is used to adjust the longitudinal dimension of the clamping; the two sets of side adjustment mechanisms are used to adjust the transverse dimension of the clamping.

[0010] Preferably, the vertical adjustment mechanism includes a vertical plate, a top clamping plate and a first screw; the vertical plate is arranged on the top of the base, a plurality of first screw holes are opened inside the vertical plate, a top clamping plate is passed through the outside of the vertical plate, and at least one group of second screw holes is provided on the top clamping plate. The first screw is fastened to the second screw hole on the top clamping plate through any first screw hole on the vertical plate to adjust and clamp the longitudinal dimension of the HVAC pipe.

[0011] Preferably, the two groups of side adjustment mechanisms each include a horizontal plate, a side clamping plate and a second screw; the horizontal plates of the two groups of side adjustment mechanisms are respectively arranged at the other end of the base and the vertical adjustment mechanism, a plurality of third screw holes are opened inside the horizontal plate, a side clamping plate is passed through the outside of the horizontal plate, and at least one group of fourth screw holes is provided on the side clamping plate, and the second screw is fastened to the fourth screw hole on the side clamping plate through any third screw hole on the horizontal plate to adjust and clamp the lateral size of the HVAC pipe.

[0012] Preferably, the top clamping plate and the side clamping plates have the same structure as the base, and all adopt L-shaped clamping grooves. The top clamping plate, the side clamping plates and the clamping grooves of the base surround and cover the outer wall of the heating and ventilation duct.

[0013] Preferably, an anti-skid pad is laid on the clamping groove to prevent the HVAC pipe from rolling randomly after being clamped, thereby improving the stability of the fastening.

[0014] Preferably, the surface of the clamping groove adopts a serrated structure, which is used to pull and prevent the outer wall of the HVAC pipe from slipping, thereby preventing the HVAC pipe from rolling randomly after being clamped, and improving the stability of the fastening.

[0015] Preferably, the clamping groove adopts a semicircular inner arc shape, which is suitable for clamping the HVAC pipe at different angles.

[0016] The present invention is based on an application method of a heating and ventilation duct installation connecting fastener device, the steps are as follows:

[0017] Step S1: displacing the top clamping plate of the vertical adjustment mechanism on the vertical plate to increase the distance between the top clamping plate and the base; displacing the side clamping plates of the two sets of side adjustment mechanisms on the corresponding horizontal plates to increase the distance between the two sets of side clamping plates and the base or the top clamping plate respectively; forming a spacing that can accommodate two pipes;

[0018] Step S2: The ends of the two pipes are respectively installed into a C-shaped structure formed by the base, the vertical adjustment mechanism and the side adjustment mechanism;

[0019] Step S3: by adjusting the position of the top clamping plate on the vertical plate, shortening the distance between the top clamping plate and the base, adjusting the clamping grooves of the top clamping plate and the base to clamp the HVAC pipe, and passing the first screw rod through the second screw hole on the top clamping plate and the first screw hole on the vertical plate corresponding to the second screw hole in sequence, thereby fixing the position of the top clamping plate on the vertical plate and clamping the longitudinal position of the HVAC pipe;

[0020] Step S4: By adjusting the position of the side clamping plate on the horizontal plate, shortening the distance between the side clamping plate and the base and between the side clamping plate and the top clamping plate, the HVAC pipe is clamped by adjusting the clamping grooves of the two sets of side clamping plates, the base and the top clamping plate, and the second screw rod is passed through the fourth screw hole on the side clamping plate and the third screw hole on the vertical plate corresponding to the fourth screw hole in sequence, thereby fixing the position of the two sets of side clamping plates on the horizontal plate and clamping the horizontal position of the HVAC pipe.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention can adjust the distance between the top clamping plate and the base through the vertical adjustment mechanism, so as to complete the height adjustment of the top clamping plate. The distance between the side clamping plate and the base and the distance between the side clamping plate and the top clamping plate can be adjusted as needed through the side adjustment mechanism to fasten HVAC pipes of different sizes, thereby improving the versatility and practicality of the fastener device.

[0023] 2. The present invention makes the surface of the clamping groove serrated, so that the clamping groove can achieve an effective pulling and anti-slip effect on the outer wall of the HVAC pipe, avoid the HVAC pipe from rolling randomly after being clamped, and improve the stability of the fastening. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of a structural device for installing and connecting fasteners in a heating and ventilation duct according to an embodiment of the present invention;

[0025] Figure 2 for Figure 1 A is a schematic diagram of the partially enlarged structure of the middle part;

[0026] Figure 3 for Figure 1 Schematic diagram of the partially enlarged structure of B.

[0027] The serial numbers in the figure are as follows:

[0028] 1. Base; 201. Vertical plate; 202. First screw hole; 203. Top clamping plate; 204. First inner slot hole; 205. Second screw hole; 206. First screw rod; 301. Horizontal plate; 302. Third screw hole; 303. Side clamping plate; 304. Second inner slot hole; 305. Fourth screw hole; 306. Second screw rod; 4. Clamping groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] like Figure 1 As shown, a heating and ventilation duct installation and connection fastener device disclosed in the present invention is used to clamp the heating and ventilation duct, including an L-shaped base 1, a vertical adjustment mechanism, and two sets of side adjustment mechanisms.

[0031] One end of the base 1 is connected to the vertical adjustment mechanism, and the other end of the base 1 and the other end of the vertical adjustment mechanism are respectively connected to a set of side adjustment mechanisms, forming a C shape as a whole; the vertical adjustment mechanism is used to adjust the longitudinal dimension of the clamping; the two sets of side adjustment mechanisms are used to adjust the lateral dimension of the clamping.

[0032] like Figure 2 As shown, the vertical adjustment mechanism includes a vertical plate 201, a top clamping plate 203 and a first screw 206. The vertical plate 201 is arranged on the top of the base 1, and a plurality of first screw holes 202 are opened inside the vertical plate 201. The top clamping plate 203 is passed through the outside of the vertical plate 201 and passes through the first inner slot hole 204 on the top clamping plate 203. The top clamping plate 203 can be displaced on the vertical plate 201 through the first inner slot hole 204 to adjust the longitudinal position.

[0033] like Figure 3 As shown, two groups of second screw holes 205 are provided on the top clamping plate 203, and two first screw rods 206 are respectively fastened and connected through the two groups of first screw holes 202 on the vertical plate 201 and the two groups of second screw holes 205 on the top clamping plate 203 to adjust the longitudinal dimension of the clamped HVAC pipe. It is convenient for the fastener to quickly adjust the spacing between the base 1 and the top clamping plate 203 as needed, and it is convenient to be applicable to the exterior of HVAC pipes of various sizes, which improves the practicality of the fastener device, and through the two first screw rods 206, the two groups of second screw holes 205 and the first screw hole 202 are threadedly connected, a more stable clamping can be achieved.

[0034] The two sets of side adjustment mechanisms each include a horizontal plate 301, a side clamping plate 303 and a second screw 306. The horizontal plates 301 of the two sets of side adjustment mechanisms are respectively arranged at the other end of the base 1 and the vertical adjustment mechanism, a plurality of third screw holes 302 are opened inside the horizontal plate 301, and a side clamping plate 303 is passed through the outside of the horizontal plate 301. The two sets of horizontal plates 301 pass through the second inner slot holes 304 on the two sets of side clamping plates 303, respectively. The two sets of side clamping plates 303 can be correspondingly displaced on the two sets of horizontal plates 301 through the second inner slot holes 304 to adjust the horizontal position.

[0035] A group of fourth screw holes 305 are provided on the side clamping plate 303, and the second screw rod 306 is fastened to the fourth screw hole 305 on the side clamping plate 303 through any third screw hole 302 on the cross plate 301 to adjust the lateral dimension of the clamped HVAC pipe. It is convenient to quickly adjust the spacing dimensions between the base 1 and the side clamping plate 303 and the top clamping plate 203 and the side clamping plate 303 as needed, and adjust the lateral spacing dimensions. It is suitable for the exterior of HVAC pipes of various sizes, which improves practicality.

[0036] Furthermore, in this embodiment, the top clamping plate 203 and the side clamping plate 304 have the same structure as the base 1, and both adopt an L-shaped clamping groove 4. The top clamping plate 203, the side clamping plate 304 and the clamping groove 4 of the base 1 are enclosed and covered on the outer wall of the heating and ventilation duct.

[0037] Furthermore, in the present embodiment, the size of the first inner slot hole 204 matches the size of the vertical plate 201, and the size of the second inner slot hole 304 matches the size of the horizontal plate 301; this facilitates the fastener to be more stable during the process of adjusting the upper and lower dimensions and the lateral dimensions, avoids deviation, and improves the use effect of the fastener.

[0038] Furthermore, in this embodiment, the clamping groove 4 adopts a semicircular inner arc shape, which is suitable for clamping the HVAC pipe at different angles, and an anti-slip pad is laid on the clamping groove 4 to prevent the HVAC pipe from rolling randomly after being clamped, thereby improving the stability of the fastening.

[0039] Furthermore, in the present embodiment, the surface of the clamping groove 4 adopts a serrated structure, which is used to pull and prevent the outer wall of the HVAC pipe from slipping, thereby preventing the HVAC pipe from rolling randomly after being clamped, and improving the stability of the fastening.

[0040] Furthermore, in this embodiment, the outer wall thread of the first screw rod 206 is meshed with the inner wall thread of the first screw hole 202 and the second screw hole 205, and the outer wall thread of the second screw rod 306 is meshed with the inner wall thread of the third screw hole 302 and the fourth screw hole 305; this facilitates the firm fixation of the fastener after the size is adjusted to avoid slipping, thereby improving the stability of the fastener clamping.

[0041] The application method of the heating and ventilation duct installation connecting fastener device of the present invention comprises the following steps:

[0042] Step S0: displacing the top clamping plate 203 of the vertical adjustment mechanism on the vertical plate 201 to increase the distance between the top clamping plate 203 and the base 1; displacing the side clamping plates 303 of the two sets of side adjustment mechanisms on the corresponding horizontal plates 301 to increase the distance between the two sets of side clamping plates 303 and the base 1 or the top clamping plate 203 respectively; forming a spacing for two pipes to be placed;

[0043] Step S1: The ends of the two pipes are respectively installed into a C-shaped structure formed by the base 1, the vertical adjustment mechanism and the side adjustment mechanism;

[0044] Step S2: by adjusting the position of the top clamping plate 203 on the vertical plate 201, shortening the distance between the top clamping plate 203 and the base 1, adjusting the clamping groove 4 of the top clamping plate 203 and the base 1 to clamp the HVAC pipe, and passing the first screw 206 through the second screw hole 205 on the top clamping plate 203 and the first screw hole 202 on the vertical plate 201 corresponding to the second screw hole 205 in sequence, thereby fixing the position of the top clamping plate 203 on the vertical plate 201 and clamping the longitudinal position of the HVAC pipe;

[0045] When it is necessary to adjust the longitudinal position, that is, the height position, the upper and lower first screw rods 206 are twisted forward to engage in the first screw hole 202 and the second screw hole 205, rotated forward and removed, and the top clamping plate 203 is pulled up and down according to the size of the HVAC pipe to be tightened so that it can be inserted into the outside of the vertical plate 201 through the first inner slot hole, thereby adjusting the distance between the top clamping plate 203 and the base 1. After adjustment, the first screw hole 202 is aligned with the second screw hole 205, and the first screw 206 is twisted and engaged and installed into the first screw hole 202 and the second screw hole 205 that are aligned after adjustment, thereby completing the height position adjustment of the top clamping plate 203.

[0046] Step S3: By adjusting the position of the side clamping plate 303 on the horizontal plate 301, shortening the distance between the side clamping plate 303 and the base 1 and between the side clamping plate 303 and the top clamping plate 203, the HVAC pipe is clamped by adjusting the clamping grooves 4 of the two groups of side clamping plates 303 and the base 1 and the top clamping plate 203, and the second screw 306 is passed through the fourth screw hole 305 on the side clamping plate 303 and the third screw hole 302 on the vertical plate 201 corresponding to the fourth screw hole 305 in sequence, thereby fixing the position of the two groups of side clamping plates 303 on the horizontal plate 301 and clamping the horizontal position of the HVAC pipe.

[0047] When the second screw 306 in the side clamp plate needs to be adjusted, the second screw 306 is engaged with the third screw hole 302 and the fourth screw hole 305, and is taken out forward, and the side clamp plate 303 is pulled leftward at the same time, and the second inner slot hole 304 is sleeved in the cross plate 304. The side clamp plate 303 installed on the right end of the base 1 and the top clamp plate 203 moves leftward on the outer wall of the cross plate 301 at the same time, and the distance between the side clamp plate 303 and the base 1 and the distance between the side clamp plate 303 and the top clamp plate 203 are adjusted as needed to make the distances between the two the same. The second screw 306 is engaged and installed into the third screw hole 302 and the fourth screw hole 305 that are aligned after adjustment, so that the semicircular clamping groove 4 opened in the base 1, the top clamp plate 203 and the upper and lower side clamp plates 303 at the right end are clamped on the outer wall of the docking HVAC pipe after adjusting the size, which is convenient for fastening HVAC pipes of different sizes, thereby improving the versatility and practicality of the fastener device.

[0048] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heating and ventilation duct installation and connection fastener device, used for clamping the heating and ventilation duct, characterized in that: It comprises an L-shaped base (1), a vertical adjustment mechanism, and two sets of side adjustment mechanisms; One end of the base (1) is connected to a vertical adjustment mechanism, and the other end of the base (1) and the other end of the vertical adjustment mechanism are respectively connected to a set of side adjustment mechanisms, forming a C-shape as a whole; the vertical adjustment mechanism is used to adjust the longitudinal dimension of the clamping; the two sets of side adjustment mechanisms are used to adjust the transverse dimension of the clamping.

2. A heating and ventilation duct installation and connection fastener device according to claim 1, characterized in that: The vertical adjustment mechanism comprises a vertical plate (201), a top clamping plate (203) and a first screw rod (206); The vertical plate (201) is arranged on the top of the base (1), and a plurality of first screw holes (202) are opened inside the vertical plate (201). A top clamping plate (203) is passed through the outside of the vertical plate (201), and at least one group of second screw holes (205) is provided on the top clamping plate (203). The first screw rod (206) is fastened and connected with the second screw hole (205) on the top clamping plate (203) through any first screw hole (202) on the vertical plate (201) to achieve adjustment and clamping of the longitudinal dimension of the HVAC pipe.

3. A heating and ventilation duct installation and connection fastener device according to claim 2, characterized in that: Both sets of the side adjustment mechanisms include a horizontal plate (301), a side clamping plate (303) and a second screw rod (306); The two groups of the horizontal plates (301) of the side adjustment mechanism are respectively arranged on the base (1) and the other end of the vertical adjustment mechanism, and a plurality of third screw holes (302) are opened inside the horizontal plate (301). A side clamping plate (303) is passed through the outside of the horizontal plate (301), and at least one group of fourth screw holes (305) is provided on the side clamping plate (303). The second screw rod (306) is fastened and connected with the fourth screw hole (305) on the side clamping plate (303) through any third screw hole (302) on the horizontal plate (301) to adjust and clamp the transverse dimension of the HVAC pipe.

4. A heating and ventilation duct installation and connection fastener device according to claim 3, characterized in that: The top clamping plate (203) and the side clamping plate (303) have the same structure as the base (1), and both use an L-shaped clamping groove (4). The top clamping plate (203), the side clamping plate (303) and the clamping groove (4) of the base (1) enclose and cover the outer wall of the heating and ventilation duct.

5. A heating and ventilation duct installation and connection fastener device according to claim 4, characterized in that: The clamping groove (4) is provided with an anti-skid pad to prevent the HVAC pipe from rolling randomly after being clamped, thereby improving the stability of the fastening.

6. A heating and ventilation duct installation and connection fastener device according to claim 4, characterized in that: The surface of the clamping groove (4) adopts a serrated structure, which is used to pull and prevent the outer wall of the HVAC pipe from slipping, thereby preventing the HVAC pipe from rolling randomly after being clamped, and improving the stability of the fastening.

7. A heating and ventilation duct installation and connection fastener device according to claim 4, characterized in that: The clamping groove (4) adopts a semicircular inner arc shape, which is suitable for clamping the HVAC pipe at different angles.

8. An application method of a heating and ventilation duct installation and connection fastener device according to any one of claims 1 to 7, characterized in that: Here are the steps: Step S0: displacing the top clamping plate (203) of the vertical adjustment mechanism on the vertical plate (201) so that the distance between the top clamping plate (203) and the base (1) is increased; displacing the side clamping plates (303) of the two sets of side adjustment mechanisms on the corresponding horizontal plates (301) so that the distance between the two sets of side clamping plates (303) and the base (1) or the top clamping plate (203) is increased respectively, so as to form a spacing that can accommodate two pipes; Step S1: The ends of the two pipes are respectively installed into a C-shaped structure formed by the base (1) and the vertical adjustment mechanism and the side adjustment mechanism; Step S2: by adjusting the position of the top clamping plate (203) on the vertical plate (201), shortening the distance between the top clamping plate (203) and the base (1), adjusting the clamping groove (4) of the top clamping plate (203) and the base (1) to clamp the HVAC pipe, and passing the first screw rod (206) through the second screw hole (205) on the top clamping plate (203) and the first screw hole (202) on the vertical plate (201) corresponding to the second screw hole (205) in sequence, thereby fixing the position of the top clamping plate (203) on the vertical plate (201) and clamping the longitudinal position of the HVAC pipe; Step S3: By adjusting the position of the side clamping plate (303) on the horizontal plate (301), the distance between the side clamping plate (303) and the base (1) and the distance between the side clamping plate (303) and the top clamping plate (203) is shortened, and the HVAC pipe is clamped by adjusting the clamping grooves (4) of the two groups of side clamping plates (303) and the base (1) and the top clamping plate (203), and the second screw rod (306) is passed through the fourth screw hole (305) on the side clamping plate (303) and the third screw hole (302) on the vertical plate (201) corresponding to the fourth screw hole (305) in sequence, thereby fixing the position of the two groups of side clamping plates (303) on the horizontal plate (301) and clamping the horizontal position of the HVAC pipe.