Air duct flange assembly positioning system

Abstract

The application discloses a kind of air pipe flange assembly positioning systems, it includes clamping unit and inner support unit, the clamping unit includes multiple clamping pieces, each described clamping piece is arranged outside air pipe, and is enclosed to form a clamping interval coaxial with air pipe, each described clamping piece can reciprocate along the radial of air pipe, to be tightly contacted or separated with the outside wall of air pipe, each described clamping piece can also reciprocate along the axial of air pipe, to be contacted or separated with the inner end surface of flange;The inner support unit includes multiple inner support pieces, each described inner support piece is at least partially arranged in air pipe, and is enclosed to form an inner support area coaxial with air pipe, each described inner support piece can reciprocate along the radial of air pipe, to be contacted or separated with the inner wall of air pipe.The beneficial effects of the application are that: the present air pipe flange assembly positioning system can realize the anti-deformation support of air pipe and the accurate positioning of flange simultaneously during the assembly process of air pipe and flange.

Description

Technical Field

[0001] This invention relates to the field of duct processing technology, and in particular to a duct flange assembly and positioning system. Background Technology

[0002] Square ducts are a widely used type of pipe in ventilation and air conditioning systems, with flanges connecting the pipe sections at both ends. Due to the operating conditions and cost requirements of duct systems, square ducts typically have thinner walls, with low-pressure system ducts generally having a wall thickness between 0.5mm and 1.2mm. In the assembly and connection of ducts and flanges, riveting is usually used; that is, the flange is first fitted onto the end of the duct, and then the two are fixed together with rivets.

[0003] In the existing technology, flanges are usually made of four angle steels connected end to end by welding. The riveting assembly process of square air ducts and flanges is generally carried out in the following steps: First, the flange is put on the end of the air duct and the flange end face is flush with the end face of the air duct. Then, holes are drilled at the corresponding positions of the flange and the air duct to insert rivets. Finally, rivet pliers are used to rivet the air duct and the flange.

[0004] However, thin-walled ducts are prone to deformation during drilling. Due to the thin walls of square ducts, the large area of ​​one side wall panel and insufficient rigidity, coupled with the lack of effective internal support, the axial pressure applied by the drill bit when the operator drills a hole in the duct wall can cause indentation deformation of the duct wall. In severe cases, it can even lead to breakage in the hole area. This deformation not only damages the smoothness of the duct's appearance and affects its airtightness and structural strength, but may also cause the drilling position to deviate from the preset position, resulting in substandard drilling quality.

[0005] In addition, the flange is prone to movement during drilling, leading to misalignment. Since the flange is only assembled to the end of the duct by a sleeve method, there is no effective positioning constraint between the flange and the duct. During drilling, the contact force between the drill bit and the duct and flange can easily cause the flange to shift axially relative to the duct, thus affecting the assembly accuracy of the duct and flange.

[0006] Therefore, there is an urgent need to design a duct flange assembly and positioning system to simultaneously achieve deformation-resistant support for the duct and precise positioning of the flange during the assembly process of the duct and flange. Summary of the Invention

[0007] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a duct flange assembly and positioning system to solve the technical problem in the prior art that it is difficult to simultaneously achieve the anti-deformation support of the duct and the precise positioning of the flange during the assembly process of the duct and the flange.

[0008] To achieve the above-mentioned technical objectives, the present invention provides a duct flange assembly and positioning system, comprising: The clamping unit includes multiple clamping members, each of which is disposed outside the duct and encloses a clamping area coaxial with the duct. Each clamping member can move radially along the duct to abut or separate from the outer wall of the duct, and each clamping member can also move axially along the duct to abut or separate from the inner end face of the flange. The internal support unit includes multiple internal support members, each of which is at least partially disposed inside the duct and encloses an internal support area coaxial with the duct. Each of the internal support members can move radially along the duct to abut or separate from the inner sidewall of the duct. Each of the internal support members can also move axially along the duct to abut or separate from the outer end face of the flange.

[0009] Furthermore, the clamping member includes four clamping members, which correspond one-to-one with the four included angles of the air duct. Each clamping member has two mutually perpendicular abutting surfaces, which are used to abut or separate from the two adjacent outer side walls of the corresponding included angle of the air duct.

[0010] Furthermore, the movement path of the clamping member along the radial direction of the duct is parallel to the angle bisector of the 90° angle between the duct and the corresponding angle.

[0011] Furthermore, the angle bisector of the 90° angle formed by the two abutting surfaces coincides with the angle bisector of the corresponding 90° angle of the duct.

[0012] Furthermore, the clamping member includes two clamping rods, which are perpendicular to each other and are fixedly connected at one end. The inner surfaces of the two clamping rods respectively form a pressing surface.

[0013] Furthermore, the clamping unit also includes a first driving component and a second driving component. The first driving component is connected to each of the clamping members and is used to drive each of the clamping members to reciprocate radially along the duct. The second driving component is connected to the first driving component and is used to drive the first driving component to move axially along the duct.

[0014] Furthermore, the inner support includes four members, each corresponding to one of the four included angles of the duct. Each inner support has two mutually perpendicular inner support surfaces and an abutment surface. The two inner support surfaces are used to abut or separate from the two adjacent inner sidewalls of the duct at the corresponding included angle. The abutment surface is used to abut or separate from the outer end face of the flange.

[0015] Furthermore, the movement path of the inner support member along the radial direction of the duct is parallel to the angle bisector of the 90° angle between the corresponding angles of the duct and the duct.

[0016] Furthermore, the angle bisector of the 90° angle formed by the two inner support surfaces coincides with the angle bisector of the 90° angle of the corresponding included angle of the air duct.

[0017] Furthermore, the inner support unit also includes a third drive assembly and a fourth drive assembly. The third drive assembly is connected to each of the inner support members and is used to drive each of the inner support members to reciprocate radially along the duct. The fourth drive assembly is connected to the third drive assembly and is used to drive the third drive assembly to move axially along the duct.

[0018] Compared with the prior art, the beneficial effects of the present invention include: during use, each inner support member moves radially along the duct until it abuts against the inner wall of the duct, thereby supporting the interior of the duct. At the same time, each inner support member moves axially along the duct until it abuts against the outer end face of the flange. Then, each clamping member moves radially along the duct until it abuts against the outer wall of the duct, thereby clamping and fixing the duct. At the same time, each clamping member moves axially along the duct until it abuts against the inner end face of the flange, thereby working together with the inner support members to limit the axial movement of the flange and prevent the flange from moving axially relative to the duct. This duct flange assembly and positioning system can simultaneously achieve anti-deformation support of the duct and precise positioning of the flange during the assembly of the duct and the flange. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the existing duct flange assembly relationship; Figure 2 This is a three-dimensional structural diagram of the existing duct flange assembly relationship from another perspective; Figure 3 This is a three-dimensional structural diagram of a duct flange assembly and positioning system provided by the present invention; Figure 4 This is a three-dimensional structural diagram of the clamping unit provided by the present invention; Figure 5 This is a three-dimensional structural diagram of the clamping unit provided by the present invention from another perspective; Figure 6 This is a schematic diagram of the clamping unit provided by the present invention; Figure 7 This is a three-dimensional structural schematic diagram of the internal support unit provided by the present invention; Figure 8 This is a three-dimensional structural schematic diagram of the internal support unit provided by the present invention from another perspective; Figure 9 This is a schematic diagram of the internal support unit provided by the present invention; Figure 10 This is a three-dimensional structural diagram of the guide body provided by the present invention; In the diagram: 1 - Duct, 2 - Flange, 100 - Clamping unit, 110 - Clamping component, 111 - Clamping surface, 112 - Clamping rod, 120 - First drive assembly, 121 - Support frame, 1211 - Guide hole, 1212 - Slide groove, 122 - Guide shaft, 1221 - First through hole, 123 - First moving shaft, 124 - First drive shaft, 1241 - First thread, 125 - First moving block, 1251 - First threaded hole, 126 - First rotary drive Moving part, 200 - inner support unit, 210 - inner support component, 211 - inner support surface, 212 - abutting surface, 213 - inner support block, 214 - abutting block, 220 - third drive assembly, 221 - support base, 2211 - guide groove, 222 - guide body, 2221 - second through hole, 223 - second moving shaft, 224 - second drive shaft, 2241 - second thread, 225 - second moving block, 2251 - second screw hole, 226 - second rotation drive component. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0021] This invention provides a duct flange assembly and positioning system, the structure of which is as follows: Figure 3 - Figure 9 As shown, the device includes a clamping unit 100 and an inner support unit 200. The clamping unit 100 includes multiple clamping members 110, each of which is disposed outside the duct 1 and forms a clamping area coaxial with the duct 1. Each clamping member 110 can reciprocate radially along the duct 1 to abut or separate from the outer wall of the duct 1. Each clamping member 110 can also reciprocate axially along the duct 1 to abut or separate from the inner end face of the flange 2. The inner support unit 200 includes multiple inner support members 210, each of which is at least partially disposed inside the duct 1 and forms an inner support area coaxial with the duct 1. Each inner support member 210 can reciprocate radially along the duct 1 to abut or separate from the inner wall of the duct 1. Each inner support member 210 can also reciprocate axially along the duct 1 to abut or separate from the outer end face of the flange 2.

[0022] In use, the duct 1 is placed on the lifting platform, which can be any existing lifting platform. Operating the lifting platform ensures that the clamping area formed by the clamping members 110 is coaxial with the duct 1. Then, each clamping member 110 moves axially along the duct 1, allowing the duct 1 to pass through the clamping area. Next, the flange 2 is fitted onto the end of the duct 1, making the end face of the flange 2 flush with the end face of the duct 1. Then, each inner support member 210 moves axially along the duct 1 until at least part of each inner support member 210 is inside the duct 1. Then, each inner support member 210 moves radially along the duct 1 until each inner support member 210 abuts against the inner wall of the duct 1, thereby supporting the interior of the duct 1. Simultaneously... Each inner support member 210 moves axially along the duct 1 until each inner support member 210 abuts against the outer end face of the flange 2. Then each clamping member 110 moves radially along the duct 1 until each clamping member 110 abuts against the outer side wall of the duct 1, thereby clamping and fixing the duct 1. At the same time, each clamping member 110 moves axially along the duct 1 until each clamping member 110 abuts against the inner end face of the flange 2, thereby working together with the inner support members 210 to limit the axial movement of the flange 2 and prevent the flange 2 from moving axially relative to the duct 1. This duct flange assembly positioning system can simultaneously achieve the anti-deformation support of the duct 1 and the precise positioning of the flange 2 during the assembly process of the duct 1 and the flange 2.

[0023] As a preferred embodiment, please refer to Figure 4 and Figure 6 The clamping member 110 includes four clamping members 110, which correspond one-to-one with the four included angles of the air duct 1. Each clamping member 110 has two mutually perpendicular abutting surfaces 111. The two abutting surfaces 111 are used to abut or separate from the two adjacent outer walls of the air duct 1 at the corresponding included angle. By setting four clamping members 110, a clamping area can be formed. Then, by abutting or separating the two adjacent outer walls of the air duct 1 at the corresponding included angle through the two abutting surfaces 212 of each clamping member 110, the clamping or releasing of the air duct 1 can be achieved, thereby improving the clamping effect of the air duct 1.

[0024] In another embodiment, the clamping member 110 includes two clamping members 110, which correspond one-to-one with the two opposite corners of the air duct 1. Each clamping member 110 has two mutually perpendicular abutting surfaces 111. The two abutting surfaces 111 are used to abut or separate one-to-one with the two adjacent outer walls of the corresponding angle of the air duct 1. By setting two clamping members 110, a clamping area can also be formed. Then, by abutting or separating one-to-one with the two adjacent outer walls of the corresponding angle of the air duct 1 through the two abutting surfaces 212 of each clamping member 110, the clamping or releasing of the air duct 1 can be achieved.

[0025] In another embodiment, the clamping member 110 includes three clamping members 110, which correspond one-to-one with the three diagonals of the air duct 1. Each clamping member 110 has two mutually perpendicular abutting surfaces 111. The two abutting surfaces 111 are used to abut or separate from the two adjacent outer walls of the corresponding angle of the air duct 1. By setting three clamping members 110, a clamping area can also be formed. Then, by abutting or separating the two adjacent outer walls of the corresponding angle of the air duct 1 through the two abutting surfaces 212 of each clamping member 110, the clamping or releasing of the air duct 1 can be achieved.

[0026] As a preferred embodiment, please refer to Figure 6 The movement path of the clamping member 110 along the radial direction of the air duct 1 is parallel to the angle bisector of the 90° angle of the corresponding angle of the air duct 1, thereby ensuring that the two abutting surfaces 111 of the clamping member 110 can simultaneously abut or separate from the two adjacent outer walls of the corresponding angle of the air duct 1.

[0027] As a preferred embodiment, please refer to Figure 6 The angle bisector of the 90° angle formed by the two abutting surfaces 111 coincides with the angle bisector of the 90° angle of the corresponding included angle of the air duct 1, thereby ensuring that the two abutting surfaces 111 of the clamping member 110 can simultaneously abut or separate from the two adjacent outer walls of the corresponding included angle of the air duct 1.

[0028] As a preferred embodiment, please refer to Figure 4 and Figure 6 The clamping member 110 includes two clamping rods 112, which are perpendicular to each other and are fixedly connected at one end. The inner surfaces of the two clamping rods 112 respectively form a mating surface 111, thereby ensuring that the two mating surfaces 111 are perpendicular to each other and thus adapt to the two adjacent outer walls of the air duct 1.

[0029] As a preferred embodiment, please refer to Figure 4 and Figure 5The clamping unit 100 also includes a first drive assembly 120 and a second drive assembly (not shown in the figure). The first drive assembly 120 is connected to each clamping member 110 and is used to drive each clamping member 110 to reciprocate radially along the duct 1. The second drive assembly is connected to the first drive assembly 120 and is used to drive the first drive assembly 120 to move axially along the duct 1. By operating the first drive assembly 120, the first drive assembly 120 can drive each clamping member 110 to reciprocate radially along the duct 1, which can surround each clamping member 110. The size of the clamping area formed by the combination is adjusted to ensure that each clamping member 110 is abutted or separated from the outer wall of the air duct 1. Then, by controlling the second drive assembly, the second drive assembly drives the first drive assembly 120 to move along the axial direction of the air duct 1, thereby driving each clamping member 110 to move back and forth along the axial direction of the air duct 1. This allows the position of each clamping member 110 to be adjusted to ensure that the air duct 1 can pass through the clamping area, that is, the clamping area is fitted onto the air duct 1. In addition, it allows each clamping member 110 to abut or separate from the inner end face of the flange 2.

[0030] As a preferred embodiment, please refer to Figure 4 and Figure 5The first drive assembly 120 includes a support frame 121, four guide shafts 122, two first moving shafts 123, a first drive shaft 124, two first moving blocks 125, and a first rotation drive component 126. The support frame 121 is fitted onto the duct 1. The four guide shafts 122 are slidably inserted through the support frame 121 and can reciprocate along their own central axis. The four guide shafts 122 correspond one-to-one with the four included angles of the duct 1 and are fixedly connected one-to-one with the four clamping components 110. The central axis of the inner support guide shaft 122 is parallel to the bisector of the 90° angle of the corresponding included angle of the duct 1, and the central axis of the guide shaft 122 is parallel to the bisector of the 90° angle formed by the two abutting surfaces 111. The two first moving shafts 124 and 125 are respectively connected to the support frame 121, four guide shafts 122, two first moving shafts 123, two first drive shafts 124, two first moving blocks 125, and two first rotating drive components 126. 3. Parallel to each other and arranged along the length or width direction of the cross-section of the duct 1, one first moving shaft 123 slides through two of the guide shafts 122, and the other first moving shaft 123 slides through the other two guide shafts 122. The first drive shaft 124 is perpendicular to the two first moving shafts 123 and is arranged along the length or width direction of the cross-section of the duct 1. Both ends of the first drive shaft 124 are rotatably connected to the support frame 121. The first drive shaft 124 is provided with two first threads 1241 of equal length and opposite direction of rotation. Two first moving blocks 125 are fixedly connected to the two first moving shafts 123 one-to-one. Each of the two first moving blocks 125 has a first screw hole 1251, and the first moving blocks 125 are connected through the first screw hole. 1251 is sleeved on the first drive shaft 124. Two first screw holes 1251 are screwed one-to-one with two first threads 1241. The fixed end of the first rotation drive member 126 is fixedly connected to the support frame 121. The output end of the first rotation drive member 126 is coaxially fixedly connected to one end of the first drive shaft 124, used to drive the first drive shaft 124 to rotate. When the first rotation drive member 126 is activated, its output end rotates in either the forward or reverse direction, driving the first drive shaft 124 to rotate in either direction. Since the four guide shafts 122 all slide through the support frame 121, they are restricted by the support frame 121. That is, the two first moving shafts 123 and the two first moving blocks 125 are restricted by the support frame 121. The two first moving blocks 125 are screwed to the first drive shaft 124. Therefore, when the first drive shaft 124 rotates in the forward or reverse direction, the two first moving blocks 125 will move closer to each other or further away from each other, that is, the two first moving shafts 123 will move closer to each other or further away from each other. Since the guide shaft 122 can reciprocate along its own central axis, the bisector of the 90° angle between the central axis of the inner support guide shaft 122 and the corresponding angle of the air duct 1 is parallel to each other, and the central axis of the guide shaft 122 is parallel to the bisector of the 90° angle formed by the two abutting surfaces 111. One of the first moving shafts 123 slides through two of the guide shafts 122, and the other first moving shaft 123 slides through the other two guide shafts 122. Therefore,When two first moving axes 123 move closer together or further apart, all four first moving axes 123 will retract or separate, that is, the four clamping members 110 will retract or separate.

[0031] As a preferred embodiment, please refer to Figure 4 and Figure 5 The support frame 121 has four guide holes 1211, which correspond one-to-one with the four included angles of the air duct 1. The central axis of the guide hole 1211 is parallel to the angle bisector of the 90° angle of the corresponding included angle of the air duct 1, and the central axis of the guide hole 1211 is parallel to the angle bisector of the 90° angle formed by the two abutting surfaces 111. The four guide shafts 122 are slidably inserted through the four guide holes 1211, so that the four guide shafts 122 can be guided and limited by the four guide holes 1211 respectively.

[0032] As a preferred embodiment, please refer to Figure 4 and Figure 5 The support frame 121 has two sliding grooves 1212. The two ends of one first moving shaft 123 are slidably connected to the two sliding grooves 1212 respectively, and the two ends of the other first moving shaft 123 are slidably connected to the two sliding grooves 1212 respectively. The first moving shaft 123 can be guided and limited by the sliding grooves 1212.

[0033] As a preferred embodiment, please refer to Figure 4 and Figure 5 Each guide shaft 122 is provided with a first through hole 1221. One first moving shaft 123 is slidably inserted through the first through holes 1221 of two of the guide shafts 122, and the other first moving shaft 123 is slidably inserted through the first through holes 1221 of the other two guide shafts 122. The movement of the first moving shaft 123 can be converted into the movement of the guide shaft 122 along the axial direction of the guide hole 121 through the first through hole 1221.

[0034] In another embodiment, the first drive assembly 120 includes a support frame 121 and four first telescopic drive members. The support frame 121 is used to fit onto the air duct 1. The fixed ends of the four first telescopic drive members are all fixedly connected to the support frame 121. The output ends of the four first telescopic drive members correspond one-to-one with the four included angles of the air duct 1 and are fixedly connected one-to-one with the four clamping members 110. The central axis of the output end of the first telescopic drive member is parallel to the angle bisector of the 90° angle of the corresponding included angle of the air duct 1, and the central axis of the output end of the first telescopic drive member is parallel to the angle bisector of the 90° angle formed by the two abutting surfaces 111.

[0035] In a preferred embodiment, the second drive assembly is connected to the support frame 121, and the second drive assembly may adopt a lead screw and nut structure.

[0036] In another embodiment, the second drive component is connected to the support frame 121. The second drive component can also be a linear motor structure. The linear motor moves on the beam, thereby driving the first drive component 120 to move along the axial direction of the duct 1.

[0037] As a preferred embodiment, please refer to Figure 7 and Figure 9 The inner support member 210 includes four members, each corresponding to one of the four included angles of the duct 1. Each inner support member 210 has two mutually perpendicular inner support surfaces 211 and an abutment surface 212. The two inner support surfaces 211 are used to abut or separate from the two adjacent inner sidewalls of the duct 1 at the corresponding included angle. The abutment surface 212 is used to abut or separate from the outer end face of the flange 2. By setting four inner support members 210, a support area can be formed. Then, by the two inner support surfaces 211 of each inner support member 210 abutting or separating from the two adjacent inner sidewalls of the duct 1 at the corresponding included angle, the duct 1 can be supported, thus improving the support effect of the duct 1.

[0038] In another embodiment, the inner support member 210 includes two members, which correspond one-to-one with the two diagonals of the air duct 1. Each inner support member 210 has two mutually perpendicular inner support surfaces 211. The two inner support surfaces 211 are used to abut or separate one-to-one with the two adjacent inner sidewalls of the air duct 1 at the corresponding angle. By setting two inner support members 210, a support area can also be formed. The air duct 1 is supported by the two inner support surfaces 211 of each inner support member 210 abutting or separating one-to-one with the two adjacent inner sidewalls of the air duct 1 at the corresponding angle.

[0039] In another embodiment, the inner support member 210 includes three members, which correspond one-to-one with the three diagonals of the air duct 1. Each inner support member 210 has two mutually perpendicular inner support surfaces 211. The two inner support surfaces 211 are used to abut or separate one-to-one with the two adjacent inner sidewalls of the air duct 1 at the corresponding angle. By setting three inner support members 210, a support area can also be formed. Then, by the two inner support surfaces 211 of each inner support member 210 abutting or separating one-to-one with the two adjacent inner sidewalls of the air duct 1 at the corresponding angle, the air duct 1 is supported.

[0040] As a preferred embodiment, please refer to Figure 9 The inner support 210 moves radially along the duct 1 and the angle bisector of the 90° angle between the inner support 210 and the duct 1 is parallel to each other, thus ensuring that the two inner support surfaces 211 of the inner support 210 can simultaneously abut or separate from the two adjacent inner sidewalls of the duct 1 at the corresponding angle.

[0041] As a preferred embodiment, please refer to Figure 9The bisector of the 90° angle formed by the two inner support surfaces 211 coincides with the bisector of the 90° angle of the corresponding angle of the air duct 1, thus ensuring that the two inner support surfaces 211 of the inner support member 210 can simultaneously abut or separate from the two adjacent inner sidewalls of the corresponding angle of the air duct 1.

[0042] As a preferred embodiment, please refer to Figure 7 and Figure 8 Each inner support member 210 includes an inner support block 213 and an abutment block 214 connected to each other. Each inner support block 213 is disposed inside the air duct 1 and encloses to form an inner support area. Each inner support block 213 has two inner support surfaces 211. Each abutment block 214 is disposed outside the air duct 1 and has an abutment surface 212. This ensures that the two inner support surfaces 211 are perpendicular to each other and thus fit with two adjacent inner sidewalls of the air duct 1.

[0043] In a preferred embodiment, each inner support block 213 is provided with a clearance groove (not shown in the figure) to provide clearance space for the cutter head. The clearance groove is located on the two inner support surfaces 211.

[0044] As a preferred embodiment, please refer to Figure 7 and Figure 8 The inner support unit 200 also includes a third drive assembly 220 and a fourth drive assembly (not shown in the figure). The third drive assembly 220 is connected to each inner support member 210 and is used to drive each inner support member 210 to reciprocate radially along the duct 1. The fourth drive assembly is connected to the third drive assembly 220 and is used to drive the third drive assembly 220 to move axially along the duct 1. By operating the third drive assembly 220, the third drive assembly 220 can drive each inner support member 210 to reciprocate radially along the duct 1, enabling the movement of each inner support member 210. The size of the inner support area formed by the enclosure is adjusted to ensure that each inner support member 210 abuts or separates from the inner side wall of the air duct 1. Then, by controlling the fourth drive component, the fourth drive component drives the third drive component 220 to move along the axial direction of the air duct 1, thereby driving each inner support member 210 to move back and forth along the axial direction of the air duct 1. This allows the position of each inner support member 210 to be adjusted, ensuring that at least a part of each inner support member 210 can move into the air duct 1. In addition, each inner support member 210 can abut or separate from the outer end face of the flange 2.

[0045] As a preferred embodiment, please refer to Figure 7 and Figure 10The third drive assembly 220 includes a support base 221, four guide bodies 222, two second moving shafts 223, a second drive shaft 224, two second moving blocks 225, and a second rotation drive component 226. All four guide bodies 222 are slidably connected to the support base 221 and can reciprocate. Each of the four guide bodies 222 corresponds to one of the four included angles of the duct 1 and is fixedly connected to one of the four inner support components 210. The movement path of each guide body 222 is parallel to the bisector of the 90° angle formed by the corresponding included angles of the duct 1, and also parallel to the bisector of the 90° angle formed by the two abutting surfaces 111. The two second moving shafts 223 are parallel to each other and both move along the length or width direction of the cross-section of the duct 1. The duct is configured such that one second moving shaft 223 slides through two guide bodies 222, and another second moving shaft 223 slides through two other guide bodies 222. A second drive shaft 224 is perpendicular to the two second moving shafts 223 and is positioned along the length or width of the duct's cross-section. The second drive shaft 224 has two second threads 2241 of equal length but opposite directions. Two second moving blocks 225 are fixedly connected to the two second moving shafts 223 one-to-one. Each second moving block 225 has a second screw hole 2251 and is fitted onto the second drive shaft 224 via the screw hole 2251. The two second screw holes 2251 and the two second threads 2241 are screwed together one-to-one. The second rotating drive... The fixed end of the moving member 226 is fixedly connected to the support base 221. The output end of the second rotation driving member 226 is coaxially fixedly connected to one end of the second drive shaft 224, and is used to drive the second drive shaft 224 to rotate. When the second rotation driving member 226 is activated, its output end rotates in the forward or reverse direction, driving the second drive shaft 224 to rotate in the forward or reverse direction. Since all four guide bodies 222 are slidably connected to the support base 221, they are restricted by the support base 221. That is, the two second moving shafts 223 and the two second moving blocks 225 are restricted by the support base 221. Furthermore, the two second moving blocks 225 are screwed to the second drive shaft 224. Therefore, when the second drive shaft 224 rotates in the forward or reverse direction, the two guide bodies 222... The two moving blocks 225 will move closer to each other or further away from each other, that is, the two second moving shafts 223 will move closer to each other or further away from each other. Since the guide body 222 can move back and forth, the moving path of the guide body 222 is parallel to the bisector of the 90° angle formed by the corresponding angle of the air duct 1, and the moving path of the guide body 222 is parallel to the bisector of the 90° angle formed by the two abutting surfaces 111. One of the second moving shafts 223 slides through two of the guide bodies 222, and the other second moving shaft 223 slides through the other two guide bodies 222. Therefore, when the two second moving shafts 223 move closer to each other or further away from each other, the four second moving shafts 223 will retract or separate from each other, that is, the four inner support members 210 retract or separate from each other.

[0046] As a preferred embodiment, please refer to Figure 7 and Figure 8 The support base 221 has four guide grooves 2211, which correspond one-to-one with the four included angles of the air duct 1. The length direction of the guide groove 2211 is parallel to the angle bisector of the 90° angle of the corresponding included angle of the air duct 1, and the length direction of the guide groove 2211 is parallel to the angle bisector of the 90° angle formed by the two abutting surfaces 111. The four guide bodies 222 are slidably connected to the four guide grooves 2211, so that the four guide bodies 222 can be guided and limited by the four guide grooves 2211 respectively.

[0047] As a preferred embodiment, please refer to Figure 7 and Figure 8 Each guide body 222 is provided with a second through hole 2221. One second moving shaft 223 is slidably inserted through the second through holes 2221 of two of the guide bodies 222, and the other second moving shaft 223 is slidably inserted through the second through holes 2221 of the other two guide bodies 222. The movement of the second moving shaft 223 can be converted into the movement of the guide body 222 along the length direction of the guide groove 2211 through the second through hole 2221.

[0048] In another embodiment, the third drive assembly 220 includes a support base 221 and four second telescopic drive members. The fixed ends of the four second telescopic drive members are all fixedly connected to the support base 221. The output ends of the four second telescopic drive members correspond one-to-one with the four included angles of the air duct 1 and are fixedly connected one-to-one with the four inner support members 210. The central axis of the output end of the second telescopic drive member is parallel to the angle bisector of the 90° angle of the corresponding included angle of the air duct 1, and the central axis of the output end of the second telescopic drive member is parallel to the angle bisector of the 90° angle formed by the two abutting surfaces 111.

[0049] In a preferred embodiment, the fourth drive assembly is connected to the support base 221, and the fourth drive assembly may adopt a lead screw and nut structure.

[0050] In another embodiment, the fourth drive component is connected to the support base 221. The fourth drive component can also be a linear motor structure. The linear motor moves on the beam, thereby driving the third drive component 220 to move along the axial direction of the duct 1.

[0051] To better understand this invention, the following is combined with... Figure 1 - Figure 10 The working principle of the technical solution of the present invention will be described in detail below: In use, the duct 1 is placed on the lifting platform, which can be any existing lifting platform. Operating the lifting platform ensures that the clamping area formed by the clamping members 110 is coaxial with the duct 1. Then, by operating the second drive component, the second drive component drives the first drive component 120 to move axially along the duct 1, thereby causing the clamping members 110 to move back and forth axially along the duct 1. This allows the position of the clamping members 110 to be adjusted so that the duct 1 passes through the clamping area, that is, the clamping area is fitted onto the duct 1. Then, the flange 2 is fitted onto the duct 1. The flange 2 end face is aligned with the duct 1 end face. Then, by controlling the fourth drive assembly, the third drive assembly 220 is driven to move axially along the duct 1, thereby driving each inner support member 210 to reciprocate axially along the duct 1. This allows the position of each inner support member 210 to be adjusted, so that at least a portion of each inner support member 210 can be moved into the duct 1 until the abutment surface 212 of each inner support member 210 abuts against the outer end face of the flange 2. Then, by controlling the third drive assembly 220, the third drive assembly 220 can drive each inner support member 210 axially along the duct 1. The radial reciprocating movement of the duct 1 adjusts the size of the inner support area formed by the inner support members 210 until each inner support member 210 abuts against the inner wall of the duct 1, thereby supporting the interior of the duct 1. Then, by controlling the first drive assembly 120, the first drive assembly 120 can drive each clamping member 110 to reciprocate radially along the duct 1, adjusting the size of the clamping area formed by the clamping members 110 until each clamping member 110 abuts against the outer wall of the duct 1, thereby clamping and fixing the duct 1. At the same time, by controlling... The second drive assembly drives the first drive assembly 120 to move axially along the duct 1, thereby causing each clamping member 110 to reciprocate axially along the duct 1. This allows for adjustment of the position of each clamping member 110 until each clamping member 110 abuts against the inner end face of the flange 2. Together with the inner support member 210, this system limits the axial movement of the flange 2, preventing it from moving axially relative to the duct 1. This duct flange assembly and positioning system can simultaneously achieve anti-deformation support for the duct 1 and precise positioning of the flange 2 during the assembly of the duct 1 and the flange 2.

[0052] The duct flange assembly and positioning system provided by this invention has the following advantages: (1) Each inner support 210 abuts against the inner wall of the air duct 1, thereby supporting the interior of the air duct 1. Each clamping member 110 abuts against the outer wall of the air duct 1, thereby clamping and fixing the air duct 1. (2) The contact surface 212 of each inner support 210 abuts against the outer end face of the flange 2, and each clamping member 110 abuts against the inner end face of the flange 2, thereby working together with the inner support 210 to limit the axial movement of the flange 2 and prevent the flange 2 from moving axially relative to the duct 1. (3) This duct flange assembly and positioning system can simultaneously achieve the anti-deformation support of duct 1 and the precise positioning of flange 2 during the assembly process of duct 1 and flange 2.

[0053] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A duct flange assembly and positioning system, characterized in that, include: The clamping unit includes multiple clamping members, each of which is disposed outside the duct and encloses a clamping area coaxial with the duct. Each clamping member can move radially along the duct to abut or separate from the outer wall of the duct, and each clamping member can also move axially along the duct to abut or separate from the inner end face of the flange. The internal support unit includes multiple internal support members, each of which is at least partially disposed inside the duct and encloses an internal support area coaxial with the duct. Each of the internal support members can move radially along the duct to abut or separate from the inner sidewall of the duct. Each of the internal support members can also move axially along the duct to abut or separate from the outer end face of the flange.

2. The duct flange assembly and positioning system according to claim 1, characterized in that, The clamping components include four, each of which corresponds to one of the four included angles of the air duct. Each clamping component has two mutually perpendicular abutting surfaces, which are used to abut or separate from the two adjacent outer side walls of the corresponding included angle of the air duct.

3. The duct flange assembly and positioning system according to claim 2, characterized in that, The movement path of the clamping member along the radial direction of the duct is parallel to the angle bisector of the 90° angle between the clamping members and the duct.

4. The duct flange assembly and positioning system according to claim 3, characterized in that, The angle bisector of the 90° angle formed by the two abutting surfaces coincides with the angle bisector of the 90° angle of the corresponding angle of the air duct.

5. The duct flange assembly and positioning system according to claim 4, characterized in that, The clamping member includes two clamping rods, which are perpendicular to each other and are fixedly connected at one end. The inner surfaces of the two clamping rods respectively form a pressing surface.

6. The duct flange assembly and positioning system according to claim 1, characterized in that, The clamping unit further includes a first driving component and a second driving component. The first driving component is connected to each of the clamping members and is used to drive each of the clamping members to reciprocate radially along the duct. The second driving component is connected to the first driving component and is used to drive the first driving component to move axially along the duct.

7. The duct flange assembly and positioning system according to claim 1, characterized in that, The inner support includes four members, each corresponding to one of the four included angles of the duct. Each inner support has two mutually perpendicular inner support surfaces and an abutment surface. The two inner support surfaces are used to abut or separate from the two adjacent inner sidewalls of the duct at the corresponding included angle. The abutment surface is used to abut or separate from the outer end face of the flange.

8. The duct flange assembly and positioning system according to claim 7, characterized in that, The movement path of the inner support member along the radial direction of the duct is parallel to the angle bisector of the 90° angle between the corresponding angles of the duct and the duct.

9. The duct flange assembly and positioning system according to claim 8, characterized in that, The angle bisector of the 90° angle formed by the two inner support surfaces coincides with the angle bisector of the 90° angle of the corresponding included angle of the air duct.

10. The duct flange assembly and positioning system according to claim 1, characterized in that, The inner support unit further includes a third drive assembly and a fourth drive assembly. The third drive assembly is connected to each of the inner support members and is used to drive each of the inner support members to reciprocate radially along the duct. The fourth drive assembly is connected to the third drive assembly and is used to drive the third drive assembly to move axially along the duct.

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