Fresh air pipeline welding device for old community transformation

Abstract

The invention relates to the technical field of welding devices, and particularly discloses a fresh air pipeline welding device for old community reconstruction, which comprises a placing base, a height adjusting device is fixedly connected to the top of the placing base, and first sliding sleeves are fixedly connected to the parts, positioned on two sides of the height adjusting device, of the top of the placing base; the fresh air pipeline welding device comprises a U-shaped connecting support, a first sliding sleeve is fixedly connected to the top of the U-shaped connecting support, a first sliding rod is slidably connected to the inner wall of the first sliding sleeve, an angle adjusting device is fixedly connected to the top of the U-shaped connecting support, a welding gun is fixedly connected to one side of the angle adjusting device, and clamping and fixing devices are fixedly connected to the top and the bottom of the U-shaped connecting support. The height adjusting device is arranged, so that fresh air pipelines of any height can be welded, the clamping and fixing device is arranged, so that two sets of pipelines needing to be welded can be clamped and fixed at the same time, and the problem of welding deviation caused by sliding due to unstable clamping is avoided.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to a welding device for fresh air ducts used in the renovation of old residential communities. Background Technology

[0002] With the deepening of the urban renewal strategy, the renovation of old residential communities has become an important livelihood project to improve the quality of life of residents and improve urban functions. Indoor environmental optimization is one of the core contents of the renovation of old urban residential communities. As a key facility for improving indoor air quality, the installation rate of fresh air systems in renovation projects has been increasing year by year. As a core component of the system, the installation quality of fresh air ducts directly determines the operating efficiency and service life of the fresh air system. Welding technology is a key link to ensure the sealing of duct connections and structural stability. This has created an urgent need for welding devices for fresh air ducts that are suitable for the construction scenarios of old residential communities.

[0003] Existing equipment has many limitations when welding fresh air ducts in old residential areas. The existing welding equipment lacks adjustment flexibility and is difficult to adapt to areas with narrow spaces and irregular duct layouts. When welding ducts of different heights, the position of the equipment needs to be adjusted frequently by hand, which makes construction difficult and welding efficiency low. In addition, welding can only be carried out in one direction and cannot flexibly adjust the welding angle and position, resulting in difficult welding operations and difficulty in guaranteeing welding quality. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides the following technical solution: a welding device for fresh air ducts in the renovation of old residential areas, comprising a base, a height adjustment device fixedly connected to the top of the base, and first sliding sleeves fixedly connected to both sides of the top of the base at the height adjustment device. A first sliding rod is slidably connected to the inner wall of each first sliding sleeve. A supporting circular plate is fixedly connected to the top of the height adjustment device, the bottom of the supporting circular plate is fixedly connected to the top of the first sliding rod, and a fixed end of an industrial robot is fixedly connected to the top of the supporting circular plate. The portion of the top of the supporting circular plate located on one side of the industrial robot is fixedly... A dust collection box is fixedly connected to the industrial robot. A U-shaped connecting bracket is fixedly connected to the execution end of the robot. An angle adjustment device is fixedly connected to the top of the U-shaped connecting bracket. A welding torch is fixedly connected to one side of the angle adjustment device. Clamping and fixing devices are fixedly connected to both the top and bottom of the U-shaped connecting bracket. Two sets of clamping and fixing devices are symmetrically distributed on the U-shaped connecting bracket. A first L-shaped connecting frame is fixedly connected to the bottom of the U-shaped connecting bracket. A dust collection hood is fixedly connected to the end of the first L-shaped connecting frame away from the U-shaped connecting bracket. A suction pipe is connected to one side of the dust collection hood. The end of the suction pipe away from the dust collection hood is connected to the top of the dust collection box.

[0005] Preferably, the top of the supporting circular plate is fixedly connected to the fixed end of the first pneumatic piston rod, the movable end of the first pneumatic piston rod is fixedly connected to the transverse support plate, and two sets of the first pneumatic piston rod are provided and symmetrically distributed on the top of the supporting circular plate.

[0006] Preferably, the height adjustment device includes a gear adjustment box. A drive motor is fixedly connected to one side of the gear adjustment box. The drive shaft of the drive motor passes through one side of the gear adjustment box and is fixedly connected to a drive gear. A second sliding rod passes through and is slidably connected to the top and bottom of the gear adjustment box. A toothed rod passes through and is fixedly connected to the side of the second sliding rod. The side of the toothed rod meshes with one side of the drive gear. A second sliding sleeve is fitted and slidably connected to the portion of the second sliding rod extending below the gear adjustment box. A mounting bracket is fixedly connected to one side of the gear adjustment box. The end of the mounting bracket away from the gear adjustment box is fixedly connected to one side of the placement base. The bottom of the second sliding sleeve is fixedly connected to the top of the placement base. The top of the second sliding rod is fixedly connected to the bottom of the support circular plate. When the drive motor is started, the drive gear rotates. Through the meshing of the gear and the toothed rod, the toothed rod moves up and down, thereby driving the second sliding rod and the support circular plate to rise and fall synchronously. The first sliding rod slides along the first sliding sleeve to ensure movement stability. The support circular plate is adjusted to a suitable welding height. The first pneumatic piston rod is started to push the transverse support plate towards the wall and fit tightly, providing stable support for the device.

[0007] Preferably, the angle adjustment device includes a fixed bracket, a rotating shaft rotatably connected to the inner wall of the fixed bracket, a sector gear sleeved and fixedly connected to the rotating shaft, a toothed plate meshing with the side of the sector gear, a connecting block fixedly connected to the side of the sector gear away from the toothed plate, a fixed rod fixedly connected to the top of the toothed plate, and a movable end of a first electric telescopic rod fixedly connected to the bottom of the fixed rod. Two sets of the first electric telescopic rods are symmetrically distributed at the bottom of the fixed rod. The fixed bracket is fixedly connected to the top of a U-shaped connecting bracket, and the fixed end of the first electric telescopic rod is fixedly connected to the top of the U-shaped connecting bracket. One side of the connecting block is fixedly connected to the welding torch. When the first electric telescopic rod is activated, its movable end drives the fixed rod and the toothed plate to move up and down. The toothed plate meshes with the sector gear, causing the sector gear to rotate around the rotating shaft, which in turn drives the welding torch to rotate through the connecting block, thus achieving welding angle adjustment.

[0008] Preferably, the fixed end of the second pneumatic piston rod is fixedly connected to one side of the inner wall of the U-shaped connecting bracket, and sliding grooves are provided on both sides of the inner wall of the U-shaped connecting bracket. A sliding block is slidably connected to the inner wall of the sliding groove. The movable end of the second pneumatic piston rod is fixedly connected to a first connecting rod. Both ends of the first connecting rod are fixedly connected to one side of the sliding block. A push-pull rod is fixedly connected to the side of the sliding block away from the first connecting rod. The end of the push-pull rod away from the sliding block is fixedly connected to one side of the clamping and fixing device.

[0009] Preferably, the clamping and fixing device includes a support frame, a first rotating frame rotatably connected to one side of the support frame, an arc-shaped clamping plate fixedly connected to the end of the first rotating frame away from the support frame, a dust removal mechanism fixedly connected to one side of the arc-shaped clamping plate, buffer springs evenly fixedly connected to the bottom of the arc-shaped clamping plate, an anti-slip pad fixedly connected to the end of the buffer spring away from the arc-shaped clamping plate, a second rotating frame rotatably connected to the portion of the side of the first rotating frame located between the support frame and the arc-shaped clamping plate, and a connecting plate rotatably connected to the end of the second rotating frame away from the first rotating frame. The second rotating frame is provided in two sets and symmetrically distributed on one side of the connecting plate. The support frame is provided in two sets and symmetrically fixedly connected to the top and bottom of the U-shaped connecting bracket. The side of the connecting plate is fixedly connected to one end of the push-pull rod. When the second pneumatic piston rod is activated, it drives the first connecting rod, sliding block, push-pull rod and connecting plate to move. The second rotating frame rotates around the connection point with the first rotating frame, pushing the first rotating frame to rotate around the connection point with the support frame. This causes the two sets of arc-shaped clamps to move closer to and clamp the fresh air duct at the same time. The anti-slip pad fits the duct to prevent slippage, and the buffer spring buffers the clamping force.

[0010] Preferably, the dust removal mechanism includes an arc-shaped slide rail, an electric slider slidably connected to the inner wall of the arc-shaped slide rail, a second L-shaped connecting frame fixedly connected to the top of the electric slider, a fixed end of a second electric telescopic rod fixedly connected to the end of the second L-shaped connecting frame away from the electric slider, a cleaning plate fixedly connected to the movable end of the second electric telescopic rod, cleaning brushes evenly fixedly connected to the bottom of the cleaning plate, a third L-shaped connecting frame fixedly connected to both sides of the second L-shaped connecting frame, a cold air fan fixedly connected to the end of the third L-shaped connecting frame away from the second L-shaped connecting frame, and the arc-shaped slide rail fixedly connected to one side of the arc-shaped clamping plate. Before welding, the second electric telescopic rod is activated, moving the cleaning plate and cleaning brushes down to the surface of the pipe. The electric slider is activated, moving the cleaning plate along the arc-shaped slide rail, and the cleaning brushes sweep dust and impurities from the pipe surface. At the same time, the cold air fan is activated to blow out cold air to further remove residual dust and cool the pipe during welding. The dust collection hood collects the swept and blown-down dust and welding fumes in real time and sends them to the dust collection box for centralized treatment.

[0011] This invention provides a welding device for fresh air ducts used in the renovation of old residential communities. It has the following beneficial effects: 1. The ventilation duct welding device used in the renovation of this old residential area uses a drive motor that, through gears and racks, moves a support circular plate up and down. This allows for precise adjustment to different welding heights without the need for manual temporary support structures. It is adaptable to various welding scenarios, enhancing the device's flexibility. When the support circular plate moves, the first and second sliding rods slide within their corresponding sleeves, forming a bidirectional guide to prevent the support circular plate from tilting during adjustment and ensure that the welding reference surface is level. Once the height is set, the first pneumatic piston rod pushes the transverse support plate tightly against the wall, providing stable support for the device. This prevents the device from shifting due to arc vibration or the impact of pipe connection during welding, thus avoiding problems such as weld joint misalignment and uneven welds, and improving welding accuracy.

[0012] 2. The new air duct welding device used in the renovation of this old residential area has a first electric telescopic rod that drives the toothed plate to move up and down. Through the meshing transmission between the toothed plate and the sector gear, the welding torch is driven to rotate flexibly around the rotating shaft. This allows for multi-angle adjustment without moving the entire device, shortening the angle adaptation time, meeting the needs of different welding positions, and avoiding the reduction in welding accuracy caused by improper welding torch angle.

[0013] 3. The fresh air duct welding device used in the renovation of this old residential area uses a second pneumatic piston rod to drive two sets of arc-shaped clamps to approach synchronously, which can clamp two sections of fresh air duct at the same time, ensuring precise alignment at the duct joint and laying the foundation for welding quality. The anti-slip pads on the inner side of the arc-shaped clamps can increase the friction with the duct surface, preventing the duct from sliding due to vibration during welding and ensuring a continuous and smooth weld. The elastic deformation of the buffer spring can offset the rigid impact force during instantaneous clamping, avoiding excessive clamp pressure that could cause duct deformation, protecting the appearance and structural integrity of the duct, thus ensuring the duct is firmly fixed and avoiding clamping damage. It is compatible with circular fresh air ducts of different diameters, eliminating the need to change clamps, improving operational flexibility and efficiency, and reducing welding waste caused by duct displacement and deformation.

[0014] 4. The new ventilation duct welding device used in the renovation of this old residential area features a second electric telescopic rod that drives the cleaning brush along an arc-shaped slide rail. This allows for comprehensive cleaning of dust and other impurities on the pipe joint surfaces, preventing impurities from causing porosity and slag inclusions in the weld, which would affect weld strength and sealing. This improves the purity of the weld surface, enhances welding quality, and extends the service life of the pipes. The cool air blown out by the air cooler further removes residual dust and cools the pipes during welding, preventing localized thermal deformation caused by high temperatures. The dust collection hood collects dust and welding fumes generated during cleaning and transports them to a dust collection box for centralized treatment, preventing dust and fumes from escaping into the working environment, preventing dust from contaminating the inside of the pipes, and protecting the health of the operators. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the fresh air duct welding device for the renovation of old residential areas according to the present invention; Figure 2 This is a schematic diagram of the U-shaped connecting bracket connection structure of the present invention; Figure 3 This is a schematic diagram of the connection structure of the height adjustment device of the present invention; Figure 4 This is a schematic diagram of the internal connection structure of the height adjustment device of the present invention; Figure 5 This is a schematic diagram of the angle adjustment device of the present invention; Figure 6 This is a schematic diagram of the U-shaped connecting bracket structure of the present invention; Figure 7 This is a schematic diagram of the connection structure of the clamping and fixing device of the present invention; Figure 8 This is a schematic diagram of the connection structure of the dust removal mechanism of the present invention.

[0016] In the diagram: 1. Base; 2. Height adjustment device; 3. First sliding sleeve; 4. First sliding rod; 5. Supporting circular plate; 6. Industrial robot; 7. Clamping and fixing device; 8. Dust suction pipe; 9. U-shaped connecting bracket; 10. Angle adjustment device; 11. Welding torch; 12. Dust collection box; 13. First L-shaped connecting frame; 14. Dust collection hood; 15. First pneumatic piston rod; 16. Horizontal support plate; 21. Gear adjustment box; 22. Drive motor; 23. Drive gear; 24. Second sliding rod; 25. Gear rack; 26. Second sliding sleeve; 27. Mounting bracket; 91. Second pneumatic piston rod; 92. Sliding groove; 93. Sliding block; 94. First connecting rod; 95. Push-pull rod; 101. Fixed bracket; 102. Rotating shaft; 103. Sector gear; 104. Tooth plate; 105. First electric telescopic rod; 106. Connecting block; 107. Fixed rod; 71. Support frame; 72. First rotating frame; 73. Arc-shaped clamp; 74. Dust removal mechanism; 75. Buffer spring; 76. Anti-slip mat; 77. Second rotating frame; 78. Connecting plate; 741. Arc-shaped slide rail; 742. Electric slider; 743. Second L-shaped connecting frame; 744. Second electric telescopic rod; 745. Cleaning plate; 746. Cleaning brush; 747. Third L-shaped connecting frame; 748. Air cooler. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] For the first embodiment, please refer to... Figures 1-4This invention provides a technical solution: a welding device for fresh air ducts used in the renovation of old residential areas, comprising a base 1, a height adjustment device 2 fixedly connected to the top of the base 1, first sliding sleeves 3 fixedly connected to both sides of the top of the base 1 at the height adjustment device 2, first sliding rods 4 slidably connected to the inner walls of the first sliding sleeves 3, a support circular plate 5 fixedly connected to the top of the height adjustment device 2, the bottom of the support circular plate 5 fixedly connected to the top of the first sliding rods 4, and a fixed end of an industrial robot 6 fixedly connected to the top of the support circular plate 5. A dust collection box 12 is fixedly connected to the side of the industrial robot 6. A U-shaped connecting bracket 9 is fixedly connected to the execution end of the industrial robot 6. An angle adjustment device 10 is fixedly connected to the top of the U-shaped connecting bracket 9. A welding torch 11 is fixedly connected to one side of the angle adjustment device 10. Clamping and fixing devices 7 are fixedly connected to both the top and bottom of the U-shaped connecting bracket 9. Two sets of clamping and fixing devices 7 are provided and symmetrically distributed on the U-shaped connecting bracket 9. A first L-shaped connecting frame 13 is fixedly connected to the bottom of the U-shaped connecting bracket 9. A dust collection hood 14 is fixedly connected to the end of the first L-shaped connecting frame 13 away from the U-shaped connecting bracket 9. A suction pipe 8 is connected to one side, and the end of the suction pipe 8 away from the dust collection hood 14 is connected to the top of the dust collection box 12. The fixed end of the first pneumatic piston rod 15 is fixedly connected to the top of the supporting circular plate 5, and the movable end of the first pneumatic piston rod 15 is fixedly connected to the transverse support plate 16. Two sets of the first pneumatic piston rod 15 are provided and symmetrically distributed on the top of the supporting circular plate 5. The height adjustment device 2 includes a gear adjustment box 21. A drive motor 22 is fixedly connected to one side of the gear adjustment box 21. The drive shaft of the drive motor 22 passes through one side of the gear adjustment box 21 and is fixedly connected to a drive gear 23. The top of the gear adjustment box 21... The second sliding rod 24 is slidably connected through the top and bottom of the gearbox 21. A toothed rod 25 is fixedly connected through the side of the second sliding rod 24. The side of the toothed rod 25 meshes with one side of the drive gear 23. A second sliding sleeve 26 is sleeved and slidably connected to the part of the second sliding rod 24 extending below the gear adjustment box 21. A mounting bracket 27 is fixedly connected to one side of the gear adjustment box 21. The end of the mounting bracket 27 away from the gear adjustment box 21 is fixedly connected to one side of the placement base 1. The bottom of the second sliding sleeve 26 is fixedly connected to the top of the placement base 1. The top of the second sliding rod 24 is fixedly connected to the bottom of the support circular plate 5.

[0019] In use, the drive motor 22 is started, which drives the drive gear 23 to rotate. Since the side of the rack 25 meshes with one side of the drive gear 23, the rotation of the drive gear 23 will cause the rack 25 to move up and down, which in turn will cause the second sliding rod 24 to slide up and down in the gear adjustment box 21 and the second sliding sleeve 26. The up and down movement of the second sliding rod 24 will cause the support plate 5 to move up and down, thereby adjusting the support plate 5 to a suitable welding height. At the same time, the up and down movement of the support plate 5 will cause the first sliding rod 4 to slide on the inner wall of the first sliding sleeve 3, ensuring the stability of the movement of the support plate 5. When the support plate 5 moves to the welding position, the first pneumatic piston rod 15 is started. The first pneumatic piston rod 15 extends and drives the transverse support plate 16 to move towards the walls on both sides of the fresh air duct until the transverse support plate 16 is tightly attached to the wall, thereby providing stable support for the entire welding device, preventing the device from shifting due to vibration or external force during the welding process, affecting the welding accuracy, and improving the stability of the welding.

[0020] Second embodiment, please refer to Figures 1-5 Based on the first embodiment, the present invention provides a technical solution: the angle adjustment device 10 includes a fixed bracket 101, a rotating shaft 102 is rotatably connected to the inner wall of the fixed bracket 101, a sector gear 103 is sleeved and fixedly connected to the rotating shaft 102, a toothed plate 104 meshes with the side of the sector gear 103, a connecting block 106 is fixedly connected to the side of the sector gear 103 away from the toothed plate 104, a fixed rod 107 is fixedly connected to the top of the toothed plate 104, the movable end of the first electric telescopic rod 105 is fixedly connected to the bottom of the fixed rod 107, two sets of the first electric telescopic rod 105 are provided and symmetrically distributed at the bottom of the fixed rod 107, the fixed bracket 101 is fixedly connected to the top of the U-shaped connecting bracket 9, the fixed end of the first electric telescopic rod 105 is fixedly connected to the top of the U-shaped connecting bracket 9, and one side of the connecting block 106 is fixedly connected to the welding torch 11.

[0021] In use, the first electric telescopic rod 105 is activated. The movable end of the first electric telescopic rod 105 drives the fixed rod 107 to move up and down. The fixed rod 107 drives the toothed plate 104 to move up and down. Since the toothed plate 104 meshes with the side of the sector gear 103, the up and down movement of the toothed plate 104 will drive the sector gear 103 to rotate around the rotating shaft 102. The rotation of the sector gear 103 will drive the connecting block 106 to rotate. The rotation of the connecting block 106 will then drive the welding torch 11 to rotate, thereby realizing the adjustment of the angle of the welding torch 11 to meet the needs of different welding positions and angles, and improving the applicability and flexibility of the welding device.

[0022] Third embodiment, please refer to Figures 1-7Based on the second embodiment, the present invention provides a technical solution: a fixed end of a second pneumatic piston rod 91 is fixedly connected to one side of the inner wall of a U-shaped connecting bracket 9; sliding grooves 92 are provided on both sides of the inner wall of the U-shaped connecting bracket 9; sliding blocks 93 are slidably connected to the inner wall of the sliding grooves 92; a first connecting rod 94 is fixedly connected to the movable end of the second pneumatic piston rod 91; both ends of the first connecting rod 94 are fixedly connected to one side of the sliding block 93; a push-pull rod 95 is fixedly connected to the side of the sliding block 93 away from the first connecting rod 94; the end of the push-pull rod 95 away from the sliding block 93 is fixedly connected to one side of a clamping and fixing device 7; the clamping and fixing device 7 includes a support frame 71; a first rotating frame 72 is rotatably connected to one side of the support frame 71; the first rotating frame 7... 2. An arc-shaped clamping plate 73 is fixedly connected to the end away from the support frame 71. A dust removal mechanism 74 is fixedly connected to one side of the arc-shaped clamping plate 73. Buffer springs 75 are evenly fixedly connected to the bottom of the arc-shaped clamping plate 73. An anti-slip pad 76 is fixedly connected to the end of the buffer spring 75 away from the arc-shaped clamping plate 73. A second rotating frame 77 is rotatably connected to the part of the side of the first rotating frame 72 located between the support frame 71 and the arc-shaped clamping plate 73. A connecting plate 78 is rotatably connected to the end of the second rotating frame 77 away from the first rotating frame 72. Two sets of the second rotating frame 77 are provided and symmetrically distributed on one side of the connecting plate 78. Two sets of the support frame 71 are provided and symmetrically fixedly connected to the top and bottom of the U-shaped connecting bracket 9. The side of the connecting plate 78 is fixedly connected to one end of the push-pull rod 95.

[0023] In use, activating the second pneumatic piston rod 91 causes the movable end of the second pneumatic piston rod 91 to move the first connecting rod 94. The movement of the first connecting rod 94 causes the sliding block 93 to slide on the inner wall of the sliding groove 92. The sliding of the sliding block 93 further drives the push-pull rod 95 to move. The movement of the push-pull rod 95 then drives the connecting plate 78 to move. Since the second rotating frame 77 is rotatably connected to both the first rotating frame 72 and the connecting plate 78, the movement of the connecting plate 78 causes the second rotating frame 77 to rotate around its connection point with the first rotating frame 72. This causes the first rotating frame 72 to rotate around its connection point with the support frame 71. The rotation of the first rotating frame 72 will cause the two sets of arc-shaped clamps 73 to move towards the fresh air duct at the same time, until the two sets of arc-shaped clamps 73 tightly clamp the two sets of fresh air ducts. Then, welding work is carried out at the connection between the two sets of ducts. The anti-slip pad 76 is in close contact with the surface of the fresh air duct, effectively preventing the fresh air duct from sliding during the welding process. At the same time, the buffer spring 75 can play a certain buffering role to avoid the arc-shaped clamps 73 from exerting too much clamping force on the fresh air duct and causing damage.

[0024] For the fourth embodiment, please refer to [link / reference]. Figures 1-8Based on the third embodiment, the present invention provides a technical solution: the dust removal mechanism 74 includes an arc-shaped slide rail 741, an electric slider 742 is slidably connected to the inner wall of the arc-shaped slide rail 741, a second L-shaped connecting frame 743 is fixedly connected to the top of the electric slider 742, a fixed end of a second electric telescopic rod 744 is fixedly connected to the end of the second L-shaped connecting frame 743 away from the electric slider 742, a cleaning plate 745 is fixedly connected to the movable end of the second electric telescopic rod 744, a cleaning brush 746 is evenly fixedly connected to the bottom of the cleaning plate 745, a third L-shaped connecting frame 747 is fixedly connected to both sides of the second L-shaped connecting frame 743, a cooler 748 is fixedly connected to the end of the third L-shaped connecting frame 747 away from the second L-shaped connecting frame 743, and the arc-shaped slide rail 741 is fixedly connected to one side of the arc-shaped clamping plate 73.

[0025] In use, after the clamping and fixing device 7 clamps and fixes the fresh air duct, before welding, the second electric telescopic rod 744 of the dust removal mechanism 74 is activated. The movable end of the second electric telescopic rod 744 will drive the cleaning plate 745 to move downwards until the cleaning brush 746 is in close contact with the surface of the fresh air duct. At this time, the electric slider 742 is activated. The electric slider 742 slides along the arc-shaped slide rail 741, thereby driving the cleaning plate 745 and the cleaning brush 746 to move along the surface of the fresh air duct. The cleaning brush 746 cleans the dust and impurities on the surface of the fresh air duct, providing a good environment for subsequent welding operations and ensuring welding quality. While cleaning, the air cooler 748 is turned on. The cold air blown out by the air cooler 748 can further blow away the dust remaining on the surface of the fresh air duct, and can also cool the fresh air duct during welding to prevent the high temperature generated during welding from damaging the duct, thereby improving the welding quality. While the dust removal mechanism 74 is cleaning, the dust collection hood 14 collects the swept and blown dust to prevent the dust from flying around and polluting the environment. The dust is sucked into the dust collection box 12 through the suction pipe 8 for centralized treatment. At the same time, the welding fumes can be collected in real time during welding to ensure that the fumes do not escape into the surrounding environment.

[0026] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A welding device for fresh air ducts used in the renovation of old residential communities, characterized in that: The system includes a base (1), a height adjustment device (2) fixedly connected to the top of the base (1), and first sliding sleeves (3) fixedly connected to the portions of the top of the base (1) on both sides of the height adjustment device (2). A first sliding rod (4) is slidably connected to the inner wall of the first sliding sleeve (3). A support circular plate (5) is fixedly connected to the top of the height adjustment device (2). The bottom of the support circular plate (5) is fixedly connected to the top of the first sliding rod (4). The fixed end of an industrial robot (6) is fixedly connected to the top of the support circular plate (5). A dust collection box (12) is fixedly connected to the portion of the top of the support circular plate (5) on one side of the industrial robot (6). A U-shaped connector is fixedly connected to the execution end of the industrial robot (6). The bracket (9) has an angle adjustment device (10) fixedly connected to the top of the U-shaped connecting bracket (9), a welding gun (11) fixedly connected to one side of the angle adjustment device (10), and clamping and fixing devices (7) fixedly connected to the top and bottom of the U-shaped connecting bracket (9). The clamping and fixing devices (7) are arranged in two sets and symmetrically distributed on the U-shaped connecting bracket (9). The bottom of the U-shaped connecting bracket (9) has a first L-shaped connecting frame (13) fixedly connected to the bottom. The end of the first L-shaped connecting frame (13) away from the U-shaped connecting bracket (9) is fixedly connected to a dust collection hood (14). A dust collection pipe (8) is connected to one side of the dust collection hood (14), and the end of the dust collection pipe (8) away from the dust collection hood (14) is connected to the top of the dust collection box (12).

2. The welding device for fresh air ducts used in the renovation of old residential areas according to claim 1, characterized in that: The top of the support circular plate (5) is fixedly connected to the fixed end of the first pneumatic piston rod (15), and the movable end of the first pneumatic piston rod (15) is fixedly connected to the transverse support plate (16). The first pneumatic piston rod (15) is provided in two sets and symmetrically distributed on the top of the support circular plate (5).

3. The welding device for fresh air ducts used in the renovation of old residential areas according to claim 1, characterized in that: The height adjustment device (2) includes a gear adjustment box (21). A drive motor (22) is fixedly connected to one side of the gear adjustment box (21). The drive shaft of the drive motor (22) passes through one side of the gear adjustment box (21) and is fixedly connected to a drive gear (23). A second sliding rod (24) passes through and is slidably connected to the top and bottom of the gear adjustment box (21). A rack (25) passes through and is fixedly connected to the side of the second sliding rod (24). The side of the rack (25) meshes with one side of the drive gear (23). A second sliding sleeve (26) is sleeved and slidably connected to the part of the second sliding rod (24) extending to the bottom of the gear adjustment box (21). A mounting bracket (27) is fixedly connected to one side of the gear adjustment box (21).

4. The welding device for fresh air ducts used in the renovation of old residential areas according to claim 3, characterized in that: The end of the mounting bracket (27) away from the gear adjustment box (21) is fixedly connected to one side of the placement base (1), the bottom of the second sliding sleeve (26) is fixedly connected to the top of the placement base (1), and the top of the second sliding rod (24) is fixedly connected to the bottom of the support circular plate (5).

5. The welding device for fresh air ducts used in the renovation of old residential areas according to claim 1, characterized in that: The angle adjustment device (10) includes a fixed bracket (101), a rotating shaft (102) is rotatably connected to the inner wall of the fixed bracket (101), a sector gear (103) is sleeved and fixedly connected to the rotating shaft (102), a toothed plate (104) meshes with the side of the sector gear (103), a connecting block (106) is fixedly connected to the side of the sector gear (103) away from the toothed plate (104), a fixed rod (107) is fixedly connected to the top of the toothed plate (104), the movable end of the first electric telescopic rod (105) is fixedly connected to the bottom of the fixed rod (107), two sets of the first electric telescopic rod (105) are provided and symmetrically distributed at the bottom of the fixed rod (107), the fixed bracket (101) is fixedly connected to the top of the U-shaped connecting bracket (9), the fixed end of the first electric telescopic rod (105) is fixedly connected to the top of the U-shaped connecting bracket (9), and one side of the connecting block (106) is fixedly connected to the welding torch (11).

6. The welding device for fresh air ducts used in the renovation of old residential areas according to claim 1, characterized in that: The fixed end of the second pneumatic piston rod (91) is fixedly connected to one side of the inner wall of the U-shaped connecting bracket (9). Sliding grooves (92) are provided on both sides of the inner wall of the U-shaped connecting bracket (9). Sliding blocks (93) are slidably connected to the inner wall of the sliding grooves (92). The movable end of the second pneumatic piston rod (91) is fixedly connected to the first connecting rod (94). Both ends of the first connecting rod (94) are fixedly connected to one side of the sliding block (93). A push-pull rod (95) is fixedly connected to the side of the sliding block (93) away from the first connecting rod (94). The end of the push-pull rod (95) away from the sliding block (93) is fixedly connected to one side of the clamping and fixing device (7).

7. The welding device for fresh air ducts used in the renovation of old residential areas according to claim 6, characterized in that: The clamping and fixing device (7) includes a support frame (71), a first rotating frame (72) is rotatably connected to one side of the support frame (71), an arc-shaped clamp (73) is fixedly connected to one end of the first rotating frame (72) away from the support frame (71), a dust removal mechanism (74) is fixedly connected to one side of the arc-shaped clamp (73), a buffer spring (75) is evenly fixedly connected to the bottom of the arc-shaped clamp (73), an anti-slip pad (76) is fixedly connected to one end of the buffer spring (75) away from the arc-shaped clamp (73), a second rotating frame (77) is rotatably connected to the part of the side of the first rotating frame (72) located between the support frame (71) and the arc-shaped clamp (73), a connecting plate (78) is rotatably connected to one end of the second rotating frame (77) away from the first rotating frame (72), and two sets of the second rotating frames (77) are provided and symmetrically distributed on one side of the connecting plate (78).

8. The welding device for fresh air ducts used in the renovation of old residential areas according to claim 7, characterized in that: The support frame (71) is provided with two sets and is symmetrically fixedly connected to the top and bottom of the U-shaped connecting bracket (9). The side of the connecting plate (78) is fixedly connected to one end of the push-pull rod (95).

9. A welding device for fresh air ducts used in the renovation of old residential areas according to claim 7, characterized in that: The dust removal mechanism (74) includes an arc-shaped slide rail (741), an electric slider (742) is slidably connected to the inner wall of the arc-shaped slide rail (741), a second L-shaped connecting frame (743) is fixedly connected to the top of the electric slider (742), a fixed end of a second electric telescopic rod (744) is fixedly connected to the end of the second L-shaped connecting frame (743) away from the electric slider (742), a cleaning plate (745) is fixedly connected to the movable end of the second electric telescopic rod (744), a cleaning brush (746) is evenly fixedly connected to the bottom of the cleaning plate (745), a third L-shaped connecting frame (747) is fixedly connected to both sides of the second L-shaped connecting frame (743), a cooler (748) is fixedly connected to the end of the third L-shaped connecting frame (747) away from the second L-shaped connecting frame (743), and the arc-shaped slide rail (741) is fixedly connected to one side of the arc-shaped clamp (73).

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