Welding device and process for a corrugated web barrel structure

Abstract

The application discloses a kind of welding device and process of corrugated web round arch structure, belong to welding equipment technical field.A kind of welding device of corrugated web round arch structure, including rack, is used for clamping corrugated web and is installed with clamping assembly on rack, support seat is provided on rack, support seat is installed with protective cover, front end plasma nozzle and rear end plasma nozzle are installed in protective cover, further include: cladding is set in protective cover and is sent wire mechanism;Beat plate, reciprocating motion is realized on protective cover by the drive of wire feeding mechanism, by wire feeding mechanism forward rotation, makes that brazing wire enters welding point stably, wire feeding mechanism reverse rotation, drive beat plate along the reciprocating motion of slide groove on protective cover, gently knock processing is carried out to newly formed weld, help release residual stress and improve weld quality, finally, close all plasma nozzles, check the quality of weld, when necessary, carry out finishing.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a welding device and process for a corrugated web circular arch structure. Background Art

[0002] Due to its excellent mechanical properties and aesthetics, corrugated web arch structures have been widely used in many fields such as bridge construction, large industrial plants, and sports stadiums. This structure can not only withstand large loads, but also has good seismic resistance and durability. However, its complex geometry places higher demands on manufacturing and welding.

[0003] Although the advantages of the corrugated web arch structure are obvious, in the actual manufacturing process, due to the complex shape and large size of the corrugated web, the high temperature generated during welding will cause local thermal expansion and cooling contraction of the material, thereby generating large residual stress, affecting the overall stability and service life of the structure. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that the corrugated web after welding has large residual stress, which affects the overall stability and service life of the structure, and to propose a welding device and process for a corrugated web circular arch structure.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A welding device for a corrugated web circular arch structure comprises a frame, on which a clamping assembly for clamping the corrugated web is installed, a support seat is provided on the frame, a protective cover is installed on the support seat, a front plasma nozzle and a rear plasma nozzle are installed in the protective cover, and the front plasma nozzle and the rear plasma nozzle are individually controlled by wires. The device also includes: a wire feeding mechanism enclosed in the protective cover, the front plasma nozzle, the wire feeding mechanism and the rear plasma nozzle are arranged in sequence front to back along the welding direction; and a clapper, which realizes reciprocating motion on the protective cover through the drive of the wire feeding mechanism to perform tapping on the weld.

[0007] In order to accurately guide the drill rod and realize continuous feeding of the drill rod through the rotational movement of the wire feeding mechanism, preferably, the wire feeding mechanism includes a shell, and a rotating sleeve rotatably installed in the shell for the drill rod to pass through, a motor is fixedly installed on the protective cover, one end of the rotating sleeve passes through the protective cover and is transmission connected to the output end of the motor, a horizontal plate is fixedly installed on the other end of the rotating sleeve, the horizontal plate has a first tooth at the end away from the rotating sleeve, and also includes two oppositely arranged first rollers and a second roller, a clamping cavity for conveying the drill rod is formed between the first roller and the second roller, wherein a connecting piece transmission-connected to the horizontal plate is provided in the shell for driving the first roller to rotate.

[0008] In order to drive the first roller to rotate, the connecting member further includes a first shaft seat fixedly mounted on the inner wall of the shell, a first connecting shaft is rotatably mounted in the first shaft seat, a flat gear and a first bevel gear are respectively mounted at both ends of the first connecting shaft, and the flat gear is meshed and connected with the horizontal plate; a second shaft seat fixedly mounted on the inner wall of the shell, a second connecting shaft is rotatably mounted in the second shaft seat, the extension directions of the first connecting shaft and the second connecting shaft are perpendicular to each other, the first roller is fixedly mounted on the second connecting shaft, and a second bevel gear is arranged relative to the first roller, and the second bevel gear is meshed and connected with the first bevel gear.

[0009] In order to change the motion trajectory of the rotating sleeve by the forward and reverse rotation of the motor, further, the rotating sleeve includes two oppositely arranged wheels installed in the shell, and a hollow sleeve for the drill rod to pass through is fixedly installed on the wheels, wherein circumferentially arranged second teeth are fixedly installed on the opposite surfaces of the two wheels, and the cross-section of the second teeth is a right triangle, and the two wheels are meshed and connected through the second teeth.

[0010] In order to drive the clapper to move back and forth in a straight line through the extension rod, further, a first through groove is equidistantly provided on the outer edge surface of the shell, an extension rod is slidably installed in the first through groove, a connecting sleeve coaxial with the hollow sleeve is provided in the shell, and a bearing is installed between the connecting sleeve and the hollow sleeve, wherein a spring is provided in the first through groove, and the two ends of the spring are fixedly connected to the bottom surface of the first through groove and the extension rod respectively.

[0011] In order to enable the clapper to gently tap the newly formed weld during the linear reciprocating motion, thereby helping to release residual stress and improve the weld quality, further, a second through-groove corresponding to the first through-groove is provided on the protective cover, and an elastic rod is slidably installed in the second through-groove, and the two ends of the elastic rod are respectively fixedly connected to the clapper and the extension rod.

[0012] In order to enable the rear end plasma nozzle to freely adjust its position angle within a certain range and maintain the optimal wire filling angle, preferably, a slide groove is provided on the protective cover, and an adjustment handle is provided on the rear end plasma nozzle, and the adjustment handle is slidably connected to the slide groove, wherein a symmetrically arranged connecting pin is fixedly installed on the rear end plasma nozzle, a pin hole adapted to the connecting pin is provided on the inner wall of the protective cover, and a damping gasket is provided between the connecting pin and the pin hole.

[0013] In order to keep the nozzle in the optimal position at all times and ensure the welding quality, preferably, the welding device of the corrugated web arch structure also includes a cylinder fixedly mounted on the frame, a push block fixedly mounted on the output end of the cylinder, the push block is slidably connected to the frame, a horizontal rod is fixedly mounted on the push block, the horizontal rod and the extension direction of the frame are perpendicular to each other, and the support seat is slidably mounted on the horizontal rod and fixed by a locking bolt.

[0014] In order to ensure that the welding rod can be fully covered by the protective gas during the entire transportation process and improve the welding quality, the protective cover is further provided with a protective gas pipe for externally connecting the protective gas, and the protective gas pipe is located on both sides of the shell.

[0015] A welding process for a corrugated web circular arch structure comprises the following steps:

[0016] Step 1: Pre-treat the corrugated web to be welded, including surface cleaning and preheating;

[0017] Step 2: Fix the cleaned corrugated web;

[0018] Step 3: Perform welding operation and control the temperature of the welding area;

[0019] Step 4: After welding, use vibration aging treatment to eliminate residual stress

[0020] Compared with the prior art, the present invention provides a welding device and process for a corrugated web circular arch structure, which has the following beneficial effects:

[0021] 1. This corrugated web arch structure welding device uses a motor to drive one of the rotating wheels as the driving wheel to rotate forward. The right-angled edges of the two second teeth abut against each other, driving the other meshing driven wheel to rotate synchronously, thereby achieving stable feeding of the drill rod. When welding is completed, the rotating wheel that was originally rotating forward is driven as the driving wheel to rotate in the opposite direction. At this time, the beveled edges of the two second teeth abut against each other, generating a downward thrust on the other driven wheel, causing the extension rod to move linearly back and forth along the first through-groove. During this linear reciprocating motion, the clapper gently taps the newly formed weld, helping to release residual stress and improve weld quality.

[0022] 2. The welding device of the corrugated web arch structure arranges the front plasma nozzle, wire feeding mechanism and rear plasma nozzle in sequence along the welding direction. During the welding process, the front plasma nozzle is first used to locally preheat the welding area to reduce the residual stress generated during the welding process, and then the rear plasma nozzle is used to complete the actual welding task to ensure the best welding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a welding device for a corrugated web circular arch structure proposed by the present invention;

[0024] Figure 2 This is a schematic overall plan view of a welding device for a corrugated web circular arch structure proposed by the present invention;

[0025] Figure 3 A schematic diagram of the protective cover structure of a welding device for a corrugated web circular arch structure proposed by the present invention;

[0026] Figure 4 This is a schematic diagram of the internal structure of a protective cover of a welding device for a corrugated web circular arch structure proposed by the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the rear end plasma nozzle of a welding device for a corrugated web circular arch structure proposed by the present invention;

[0028] Figure 6 This is a schematic structural diagram of a wire feeding mechanism of a welding device for a corrugated web circular arch structure proposed by the present invention;

[0029] Figure 7 This is a schematic diagram of the connecting piece structure of a welding device for a corrugated web circular arch structure proposed by the present invention.

[0030] In the figure: 1. Frame;

[0031] 2. Clamping assembly; 201. Mounting seat; 202. Rotating block; 203. Support rod; 204. Clamping block; 205. Clamping portion; 206. Mounting slot; 207. Clamping gasket; 208. Adjusting block; 209. Bidirectional screw;

[0032] 3. Support seat;

[0033] 4. Protective cover; 401. Second through groove; 402. Slide groove; 403. Pin hole; 404. Damping gasket; 405. Protective air pipe;

[0034] 5. Front plasma nozzle;

[0035] 6. Rear plasma nozzle; 601. Connecting pin;

[0036] 7. Wire feeding mechanism; 701. Housing; 702. Rotating sleeve; 703. Horizontal plate; 704. First tooth; 705. First roller; 706. Second roller; 707. First shaft seat; 708. First connecting shaft; 709. Flat gear; 710. First bevel gear; 711. Second shaft seat; 712. Second connecting shaft; 713. Second bevel gear; 714. Rotating wheel; 715. Hollow sleeve; 716. Second tooth; 717. First through slot; 718. Extension rod; 719. Connecting sleeve; 720. Spring;

[0037] 8. Clapper; 9. Motor; 10. Elastic rod; 11. Cylinder; 12. Push block; 13. Horizontal rod; 14. Adjustable handle. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0039] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0040] Example:

[0041] Reference Figure 1-7A welding device for a corrugated web arch structure includes a frame 1, a clamping assembly 2 for clamping the corrugated web is installed on the frame 1, a support base 3 is provided on the frame 1, and a protective cover 4 is installed on the support base 3. The protective cover 4 not only provides physical protection for internal components, but also reduces the leakage of harmful radiation such as ultraviolet rays and prevents external impurities from entering the welding area. A front plasma nozzle 5 and a rear plasma nozzle 6 are installed in the protective cover 4. The front plasma nozzle 5 is mainly used to locally preheat the welding area to reduce the residual stress generated during the welding process, and the rear plasma nozzle 6 is used to complete the actual welding task or refine the weld. The front plasma nozzle 5 The front plasma nozzle 5 and the rear plasma nozzle 6 are individually controlled by wires, and parameters such as power and gas flow can be adjusted according to specific needs to ensure the best welding effect. It also includes: a wire feeding mechanism 7 enclosed in the protective cover 4 to ensure that the welding wire can be smoothly and accurately fed into the welding point under a controlled environment. The front plasma nozzle 5, the wire feeding mechanism 7 and the rear plasma nozzle 6 are arranged in sequence front and back along the welding direction; the clapper 8, which is driven by the wire feeding mechanism 7 to realize reciprocating motion on the protective cover 4 to knock the weld. This mechanical vibration helps to release the residual stress generated during the welding process, improve the weld quality, and prevent cracks or other defects in subsequent use.

[0042] Preferably, in this embodiment, the clamping assembly 2 includes a mounting base 201 fixedly mounted on the frame 1, and two hinged clamping arms, which can rotate freely within a certain range in the mounting base 201 to accommodate corrugated webs of different shapes and sizes. Any clamping arm includes a rotating block 202 rotatably connected to the mounting base 201, a support rod 203 is fixedly mounted on the rotating block 202, and a clamping block 204 is fixedly mounted on the support rod 203. The clamping block 204 has two parts, a clamping portion 205 and a mounting groove 206. The clamping portion 205 is provided with a clamping portion 205 that can be used to clamp the corrugated web. The clamping gasket 207 of the plate is usually made of a wear-resistant and elastic material such as rubber or polyurethane, which can effectively prevent the surface of the corrugated web from being scratched and ensure good clamping force. An adjustment block 208 is rotatably installed in the mounting groove 206. The clamping assembly 2 also includes a bidirectional screw rod 209. The two adjustment blocks 208 are respectively threadedly installed at both ends of the bidirectional screw rod 209. By rotating the bidirectional screw rod 209, the two clamping arms can be synchronously moved closer or farther away, and the clamping block 204 can be fine-tuned according to the specific shape of the corrugated web, thereby achieving a tighter fit.

[0043] First, the corrugated web to be welded is placed on the frame 1 and fixed with the clamping assembly 2. The clamping assembly is designed to be multi-point adjustable and can be precisely adjusted according to the specific shape and size of the corrugated web to ensure that it remains stable throughout the welding process. The front plasma nozzle 5 is started to locally preheat the welding area to ensure that the material reaches the appropriate welding temperature. When the welding area reaches the appropriate temperature, the wire feeding mechanism 7 is started and rotates forward to allow the brazing wire to smoothly enter the welding point. At the same time, the rear plasma nozzle 6 begins to work to complete the welding task. After welding is completed, the wire feeding mechanism 7 rotates in the opposite direction, driving the clapper 8 to reciprocate along the slide 402 on the protective cover 4, gently tapping the newly formed weld to help release residual stress and improve the weld quality. Finally, all plasma nozzles are turned off, the quality of the weld is inspected, and trimming is performed if necessary. Clean the welding area to remove any residue or impurities to ensure that the weld surface is smooth and free of defects.

[0044] Reference Figure 6-Figure 7 The wire feeding mechanism 7 includes a shell 701 and a rotating sleeve 702 rotatably installed in the shell 701 for the drill rod to pass through. It can accurately guide the drill rod and realize continuous feeding of the drill rod through its rotational movement. A motor 9 is fixedly installed on the protective cover 4. One end of the rotating sleeve 702 passes through the protective cover 4 and is transmission-connected to the output end of the motor 9. A horizontal plate 703 is fixedly installed on the other end of the rotating sleeve 702. The end of the horizontal plate 703 facing away from the rotating sleeve 702 has a first tooth 704, and also includes two oppositely arranged first rollers 705 and second rollers 706. A clamping cavity for conveying the drill rod is formed between the first roller 705 and the second roller 706. The design of the clamping cavity ensures that the drill rod can be pushed to the welding area evenly and continuously, avoiding slipping or jamming of the drill rod. A connecting piece transmission-connected to the horizontal plate 703 is provided in the shell 701 for driving the first roller 705 to rotate.

[0045] Install the drill rod roll on the drill rod supply reel of the wire feeding mechanism 7, and ensure that the drill rod passes smoothly through the clamping cavity between the rotating sleeve 702, the first roller 705 and the second roller 706, start the motor 9 to drive the rotating sleeve 702 to rotate, and as the rotating sleeve 702 rotates, the first teeth 704 on the horizontal plate 703 begin to drive the connecting piece, and the connecting piece further drives the first roller 705 to rotate. The clamping cavity between the first roller 705 and the second roller 706 applies sufficient friction to the drill rod, ensuring that the drill rod is smoothly and continuously pushed forward. The drill rod is finally accurately fed into the welding area below the rear end plasma nozzle 6 to complete the welding operation.

[0046] Specifically, the connecting part includes a first shaft seat 707 fixedly mounted on the inner wall of the shell 701, a first connecting shaft 708 is rotatably mounted in the first shaft seat 707, a flat gear 709 and a first bevel gear 710 are respectively mounted at both ends of the first connecting shaft 708, and the flat gear 709 is meshed and connected with the horizontal plate 703; a second shaft seat 711 fixedly mounted on the inner wall of the shell 701, a second connecting shaft 712 is rotatably mounted in the second shaft seat 711, the extension directions of the first connecting shaft 708 and the second connecting shaft 712 are perpendicular to each other, the first roller 705 is fixedly mounted on the second connecting shaft 712, and a second bevel gear 713 is arranged relative to the first roller 705, and the second bevel gear 713 is meshed and connected with the first bevel gear 710.

[0047] The starting motor 9 drives the rotating sleeve 702 to rotate in the forward direction. The forward rotation of the rotating sleeve 702 drives the horizontal plate 703 to rotate. The first tooth 704 on the horizontal plate 703 meshes with the flat gear 709. As the horizontal plate 703 rotates, the flat gear 709 is driven to rotate, driving the first connecting shaft 708 to rotate. As the first connecting shaft 708 rotates, the first bevel gear 710 at the other end also begins to rotate. The meshing relationship between the bevel gears changes the direction of the force, driving the second bevel gear 713 to rotate, driving the second connecting shaft 712 to rotate. When the second connecting shaft 712 rotates, the first roller 705 fixed thereto also rotates. The clamping cavity between the first roller 705 and the second roller 706 applies sufficient friction to the drill rod, ensuring that the drill rod is smoothly and continuously advanced forward, and ultimately accurately delivered to the welding area below the front plasma nozzle 5.

[0048] Specifically, the rotating sleeve 702 includes two oppositely arranged wheels 714 installed in the housing 701, and a hollow sleeve 715 for the drill rod to pass through is fixedly installed on the rotating wheels 714. Among them, the opposite surfaces of the two rotating wheels 714 are fixedly installed with circumferentially arranged second teeth 716, and the cross section of the second teeth 716 is a right triangle. The two rotating wheels 714 are meshed and connected through the second teeth 716 to ensure that the drill rod maintains a stable propulsion speed and direction during the entire conveying process. When the motor 9 drives the rotating sleeve 702, one of the rotating wheels 714 is driven to rotate as a driving wheel. Since the second teeth 716 on the two rotating wheels 714 are engaged with each other, the rotation of the driving wheel will drive the other driven wheel to rotate synchronously. The synchronous rotation of the two rotating wheels 714 ensures the stable transmission of the drill rod in the hollow sleeve 715, avoiding the drill rod slipping or jamming caused by uneven force on one side. After passing through the hollow sleeve 715, the drill rod enters the clamping cavity between the first roller 705 and the second roller 706. The first roller 705 is driven to rotate by the connecting piece and cooperates with the second roller 706 to apply sufficient friction to the drill rod, ensuring that the drill rod can be continuously and evenly advanced forward.

[0049] Further, a first through groove 717 is equidistantly formed on the outer edge surface of the shell 701, an extension rod 718 is slidingly installed in the first through groove 717, a connecting sleeve 719 coaxial with the hollow sleeve 715 is arranged in the shell 701, a bearing is installed between the connecting sleeve 719 and the hollow sleeve 715, thereby reducing friction, improving the rotation efficiency of the rotating sleeve 702, and enhancing the stability of the system, wherein a spring 720 is arranged in the first through groove 717, and the two ends of the spring 720 are fixedly connected with the groove inner bottom surface of the first through groove 717 and the extension rod 718 respectively, so as to provide a restoring force for the extension rod 718, and enable the extension rod 718 to automatically reset when subjected to external force.

[0050] Since the cross section of the second tooth 716 is a right triangle, when one of the two rotating wheels 714 is driven to rotate forward as a driving wheel, the right angle edges of the two second teeth 716 abut to drive the other driving wheel connected in mesh to rotate synchronously, thereby realizing stable conveying of the welding rod, when the welding is completed, the one rotating wheel 714 originally rotating forward is driven to rotate reversely, at this time, the oblique angle edges of the two second teeth 716 abut to generate a downward thrust on the other driving wheel, so that the extension rod 718 linearly reciprocates along the first through groove 717, the second through groove 401 corresponding to the first through groove 717 is formed in the protective cover 4, and the elastic rod 10 is slidingly installed in the second through groove 401, the two ends of the elastic rod 10 are fixedly connected with the clapper 8 and the extension rod 718 respectively, and the clapper 8 softly strikes the newly formed weld in the linear reciprocating process, thereby helping to release residual stress and improve the weld quality.

[0051] Referring to Figure 4-Figure 5 Since too small wire filling angle will affect the melting effect of the rear end plasma nozzle 6 on the wire, and too large wire filling angle will increase the inclination angle of the rear end plasma nozzle 6 and increase the size of the welding torch, therefore, the sliding groove 402 is formed in the protective cover 4, the adjusting handle 14 is sleeved on the rear end plasma nozzle 6, and the adjusting handle 14 is slidingly connected in the sliding groove 402, so that the rear end plasma nozzle 6 can be freely adjusted in position angle within a certain range, and the angle range is between 20° and 40°, wherein the connecting pins 601 symmetrically arranged are fixedly installed on the rear end plasma nozzle 6, the pin holes 403 adapted to the connecting pins 601 are formed in the inner wall of the protective cover 4, and the damping gaskets 404 are arranged between the connecting pins 601 and the pin holes 403, so that the position of the adjusted nozzle is more stable, and small displacement caused by external factors is avoided.

[0052] The welding device of the corrugated web round arch structure further comprises a cylinder 11 fixedly installed on the rack 1, a push block 12 fixedly installed at the output end of the cylinder 11, the push block 12 being slidingly connected to the rack 1, a horizontal rod 13 fixedly installed on the push block 12, the horizontal rod 13 being perpendicular to the extension direction of the rack 1, and the support seat 3 being slidingly installed on the horizontal rod 13 and fixed by locking bolts.

[0053] 1. Initial position adjustment:

[0054] Before starting welding, the operator can start the cylinder 11 according to the specific situation of the welding area, and push the push block 12 to slide along the rack 1 to the appropriate position;

[0055] The push block 12 drives the horizontal rod 13 to move, so that the support seat 3 also moves to the ideal position correspondingly;

[0056] 2. Fixing of the support seat 3:

[0057] After finding the ideal position, the support seat 3 is fixed on the horizontal rod 13 by locking bolts to ensure that it remains stationary during the welding process;

[0058] The protective cover 4, the front-end plasma nozzle 5, the rear-end plasma nozzle 6 and other components installed on the support seat 3 are also fixed in the appropriate position;

[0059] 3. Welding process:

[0060] Start the welding equipment, and the front-end plasma nozzle 5 and the rear-end plasma nozzle 6 perform welding operations according to the preset parameters. Due to the accurate positioning of the support seat 3, the nozzles can always maintain the best position, ensuring the welding quality.

[0061] The protective cover 4 has a protective gas pipe 405 inside, which is used to connect protective gas such as argon or nitrogen to protect the welding area from oxidation or other pollution. The protective gas pipe 405 is located on both sides of the shell 701 to ensure that the filler wire is fully covered with protective gas during the entire conveying process, improving the welding quality.

[0062] A welding process for a corrugated web round arch structure, comprising the following steps:

[0063] Step one

[0064] Workpiece preparation: check whether the corrugated web to be welded meets the specification requirements, clean the welding area, and remove impurities such as oil stains and rust;

[0065] Equipment inspection: confirm that all components, such as the clamping assembly 2, the wire feeding mechanism 7, the front-end plasma nozzle 5, the rear-end plasma nozzle 6, etc., are in good condition and are calibrated;

[0066] Parameter setting: setting the operating parameters of the front plasma nozzle 5 and the rear plasma nozzle 6, such as current, gas flow, etc., according to the material type and thickness, and adjusting the gas supply of the protective gas pipe 405;

[0067] Step 2

[0068] Workpiece fixing: Use the clamping assembly 2 to fix the corrugated web to the frame 1. Use the bidirectional screw 209 to adjust the opening and closing between the two clamping arms so that the clamping gasket 207 on the clamping part 205 is in close contact with the corrugated web to ensure a secure clamping.

[0069] Adjust the position of the support base 3 to the optimal welding position and secure it with locking bolts;

[0070] Step 3

[0071] Preheating treatment: Start the front plasma nozzle 5 to preheat the welding area locally to reduce the residual stress generated during the welding process. The preheating temperature should be determined according to the material type and is usually between 100°C and 300°C.

[0072] Step 4

[0073] Welding operation: The welding rod smoothly passes through the hollow sleeve 715 and enters the clamping cavity between the first roller 705 and the second roller 706;

[0074] Start the motor 9: drives the rotating sleeve 702 to rotate, thereby driving the drill rod to move forward;

[0075] Start welding: Start the front plasma nozzle 5 and the rear plasma nozzle 6, and perform welding operations according to the preset parameters. The protective gas pipe 405 provides inert gas protection to prevent oxidation reaction;

[0076] Step 5

[0077] After welding is completed, the reversing motor 9 drives the driving wheel to rotate in the opposite direction, so that the beveled edges of the two second teeth 716 abut against each other, generating a downward thrust, causing the extension rod 718 to move linearly back and forth along the first through slot 717;

[0078] The movement of the extension rod 718 is transmitted to the clapper 8 through the elastic rod 10, so that the clapper 8 performs a linear reciprocating motion along the second through groove 401 on the protective cover 4, gently tapping the newly formed weld to help release residual stress and improve the quality of the weld;

[0079] Step 6

[0080] Weld inspection and repair: Turn off all plasma nozzles and check the quality of the weld, including appearance, size, strength and other indicators;

[0081] If necessary, perform weld trimming to remove excess slag or irregularities to ensure the weld surface is smooth and free of defects;

[0082] Step 7

[0083] Cleaning and maintenance: Clean the welding area, remove any residue or impurities, and ensure that the welding point surface is smooth and free of defects;

[0084] Perform comprehensive inspection and maintenance on welding equipment to ensure that all components are functioning properly and prepare for the next welding task.

[0085] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A welding device for a corrugated web circular arch structure, comprising a frame (1), on which a clamping assembly (2) for clamping the corrugated web is mounted, characterized in that: The frame (1) is provided with a support base (3), a protective cover (4) is installed on the support base (3), a front plasma nozzle (5) and a rear plasma nozzle (6) are installed in the protective cover (4), the front plasma nozzle (5) and the rear plasma nozzle (6) are controlled separately through a wire, and further comprises a wire feeding mechanism (7) enclosed and arranged in the protective cover (4), the front plasma nozzle (5), the wire feeding mechanism (7) and the rear plasma nozzle (6) are arranged in sequence in a front-to-back direction along the welding direction; a clapper (8) is driven by the wire feeding mechanism (7) to realize a reciprocating motion on the protective cover (4) to perform a knocking process on the weld seam; The wire feeding mechanism (7) includes a housing (701) and a rotating sleeve (702) rotatably mounted in the housing (701) for the rod to pass through. A motor (9) is fixedly mounted on the protective cover (4). One end of the rotating sleeve (702) passes through the protective cover (4) and is transmission-connected to the output end of the motor (9). A horizontal plate (703) is fixedly mounted on the other end of the rotating sleeve (702). The end of the horizontal plate (703) facing away from the rotating sleeve (702) has a first tooth (704). The mechanism also includes two first rollers (705) and a second roller (706) arranged opposite to each other. A clamping cavity for conveying the rod is formed between the first roller (705) and the second roller (706). A connecting member transmission-connected to the horizontal plate (703) is provided in the housing (701) for driving the first roller (705) to rotate. The connecting member includes a first shaft seat (707) fixedly mounted on the inner wall of the housing (701), a first connecting shaft (708) being rotatably mounted in the first shaft seat (707), a flat gear (709) and a first bevel gear (710) being mounted at both ends of the first connecting shaft (708), the flat gear (709) being meshedly connected with the horizontal plate (703); a second shaft seat (711) fixedly mounted on the inner wall of the housing (701), a second connecting shaft (712) being rotatably mounted in the second shaft seat (711), the extension directions of the first connecting shaft (708) and the second connecting shaft (712) being perpendicular to each other, the first roller (705) being fixedly mounted on the second connecting shaft (712), and a second bevel gear (713) being arranged relative to the first roller (705), the second bevel gear (713) being meshedly connected with the first bevel gear (710); The rotating sleeve (702) includes two oppositely arranged rotating wheels (714) installed in the housing (701), and a hollow sleeve (715) for the drill rod to pass through is fixedly installed on the rotating wheels (714), wherein circumferentially arranged second teeth (716) are fixedly installed on opposite surfaces of the two rotating wheels (714), and the cross section of the second teeth (716) is a right triangle, and the two rotating wheels (714) are meshed and connected via the second teeth (716); First through-grooves (717) are equidistantly provided on the outer edge surface of the shell (701), an extension rod (718) is slidably installed in the first through-grooves (717), a connecting sleeve (719) coaxial with the hollow sleeve (715) is provided in the shell (701), a bearing is installed between the connecting sleeve (719) and the hollow sleeve (715), wherein a spring (720) is provided in the first through-grooves (717), and two ends of the spring (720) are fixedly connected to the bottom surface of the first through-grooves (717) and the extension rod (718), respectively; The protective cover (4) is provided with a second through-slot (401) corresponding to the first through-slot (717), an elastic rod (10) is slidably mounted in the second through-slot (401), and two ends of the elastic rod (10) are fixedly connected to the clapper board (8) and the extension rod (718), respectively.

2. The welding device for a corrugated web circular arch structure according to claim 1, characterized in that: The protective cover (4) is provided with a slide groove (402), and the rear end plasma nozzle (6) is provided with an adjustment handle (14), and the adjustment handle (14) is slidably connected in the slide groove (402). A symmetrically arranged connecting pin (601) is fixedly mounted on the rear plasma nozzle (6), a pin hole (403) adapted to the connecting pin (601) is provided on the inner wall of the protective cover (4), and a damping gasket (404) is provided between the connecting pin (601) and the pin hole (403).

3. The welding device for a corrugated web circular arch structure according to claim 1, characterized in that: The welding device for the corrugated web arch structure further comprises a cylinder (11) fixedly mounted on the frame (1), a push block (12) fixedly mounted on the output end of the cylinder (11), the push block (12) being slidably connected to the frame (1), a horizontal rod (13) fixedly mounted on the push block (12), the horizontal rod (13) and the extension direction of the frame (1) being perpendicular to each other, and the support seat (3) being slidably mounted on the horizontal rod (13) and fixed by a locking bolt.

4. The welding device for a corrugated web circular arch structure according to claim 2, characterized in that: The protective cover (4) has a protective gas pipe (405) inside for connecting to an external protective gas, and the protective gas pipe (405) is located on both sides of the shell (701).

5. A welding process for a corrugated web circular arch structure, a welding device for a corrugated web circular arch structure according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: Pre-treat the corrugated web to be welded, including surface cleaning and preheating; Step 2: Fix the cleaned corrugated web; Step 3: Perform welding operation and control the temperature of the welding area; Step 4: After welding is completed, vibration aging treatment is used to eliminate residual stress.

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