A method and apparatus for overlay welding of wind turbine joints

Abstract

This invention discloses a method and apparatus for overlay welding of fan joints, belonging to the field of pipeline overlay welding technology. This method and apparatus, by incorporating a fan, an elastic telescopic sleeve, and a suction cup, allows for rapid application of exhaust gas along one of the first conduits into a flexible hose when internal repair welding of the fan joint pipeline is required. Simultaneously, the elastic telescopic support gradually extends and contacts the fan joint pipeline, pushing the welding head into contact with it. This not only ensures effective welding of the fan joint pipeline but also allows the apparatus to be adapted for welding fan joint pipelines of different sizes. Furthermore, it rapidly cools the welding area of ​​the fan joint pipeline, preventing injury to personnel and accelerating the welding efficiency of the fan joint pipeline.

Description

Technical Field

[0001] This invention relates to the field of pipeline surfacing technology, and in particular to a method and apparatus for surfacing fan joints. Background Technology

[0002] As an economical and rapid process for material surface modification, welding is increasingly widely used in the manufacturing and repair of parts in various industrial sectors. To maximize the effectiveness of the weld overlay, the desired welding method is one with minimal base material dilution, high deposition rate, and excellent weld overlay performance—that is, a high-quality, high-efficiency, low-dilution welding technique. In practice, it is typically used to repair or reinforce the surfaces of metal materials such as plates, pipes, and plastics.

[0003] Currently, when welding fan ducts, it is usually used to repair or reinforce the fan ducts. However, in actual use, it is difficult to ensure the uniformity of the duct repair if manual welding is used. If robotic arm repair is used, the equipment cost is too high. In addition, a large amount of waste gas is generated during the duct repair and reinforcement process. At the same time, the repaired area will generate high temperature, which not only easily affects the environment, but also makes it difficult to ensure the safety of the duct repair personnel. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems mentioned above and / or existing pipe surfacing, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is that when welding fan ducts, the fan ducts are usually repaired or reinforced. However, in actual use, if manual welding is used, it is difficult to ensure the uniformity of the duct repair. If a robotic arm is used for repair, the equipment cost is too high. In addition, a large amount of waste gas is generated during the repair and reinforcement of the ducts. At the same time, the repaired area will generate high temperature, which not only easily affects the environment, but also makes it difficult to ensure the safety of the personnel repairing the ducts.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a welding device for repairing the outer or inner layer of a fan joint pipe, the fan joint welding device comprising: a support mechanism, a ventilation mechanism, a welding mechanism, and a fan joint pipe;

[0008] The support mechanism includes a base assembly, a fixing frame, a limiting assembly, a guiding assembly, and a positioning assembly. The base assembly includes a fixing seat and an adsorption hole. The limiting assembly includes a fixing plate, a limiting plate, a limiting groove, a limiting block, and a connecting rod. The guiding assembly includes a guide shell and a guide groove. The positioning assembly includes a central positioning shaft and a reinforcing bracket.

[0009] The ventilation mechanism includes a flow splitting assembly, a first duct, a fan, a second duct, and a hose. The flow splitting assembly includes a flow splitting shell, a flow channel, a first connecting plate, a second connecting plate, a positioning frame, and a sealing cover.

[0010] The welding mechanism includes a movable component, a flexible telescopic support, an adjusting rod, a pressure component, and a welding component. The movable component includes a movable frame, bearings, and pulleys. The pressure component includes a guide pipe, a suction cup, a third guide pipe, and a flexible telescopic sleeve. The welding component includes a welding head and a welding device. The wind turbine joint welding method includes the following welding steps:

[0011] S1. When using this device, two welding modes can be sampled. When selecting the first welding mode, the internal welding of the fan joint pipe is performed. In this case, the fan joint pipe needs to be placed outside the welding mechanism. After the extrusion position of the fan joint pipe is fixed by the external fixing mechanism, the device can be started. The second welding mode is to weld the outside of the fan joint pipe. In this case, the fan joint pipe needs to be fixed by the external fixing mechanism. Then, the adjusting rod is connected to the outer wall of the fan joint pipe. After the connection is completed, the device is started.

[0012] S2. When the device is running, the fan, welder and welding head will start. At this time, the driver set behind the central positioning shaft will gradually rotate the central positioning shaft, so that the central positioning shaft will gradually drive the movable frame and the elastic telescopic frame to rotate through the reinforcing bracket. Since the center of the fan joint pipe corresponds to the central positioning shaft, the welding head will rotate along the outer or inner wall of the fan joint pipe at the same time as it starts.

[0013] S3. During operation, the fan will extract gas from one of the first ducts. At this time, the outside gas will enter the fan through one of the suction cups, hoses and guide pipes, so that the fan can collect the exhaust gas generated during the welding of the fan joint pipe by extracting the gas.

[0014] S4. When it is necessary to repair and weld the inside of the fan joint pipe, simply start the fan. During operation, the fan will draw gas along one of the first conduits, the flow channel, and the second conduit to one of the hoses. The gas will then quickly enter the guide pipe connected to the third conduit. At this time, the fan will inject the gas into one of the hoses and the elastic telescopic sleeve. The elastic telescopic sleeve will expand rapidly while the suction cup discharges gas. Since the suction cup connected to the guide pipe is in contact with the fan joint pipe, the gas discharged by the fan can be quickly sprayed onto the welded part of the fan joint pipe. The elastic telescopic support will also gradually extend and contact the fan joint pipe, thereby pushing the welded head to fit with the fan joint pipe.

[0015] As a further aspect of the present invention: the support mechanism includes a base assembly, a fixing frame disposed on the base assembly, a limiting component, and a positioning component, wherein the limiting component is connected to the fixing frame; and...

[0016] The ventilation mechanism includes a flow-diverting component, a first duct connected to the flow-diverting component, a fan, and a second duct, wherein one end of the second duct is connected to the other side of the flow-diverting component; and...

[0017] A welding mechanism includes a movable component, a flexible telescopic support, an adjusting rod connected to the flexible telescopic support, and a welding component, wherein the movable component is fixedly connected to the flexible telescopic support; and,

[0018] The fan joint pipe is sleeved outside the welding mechanism, and the inner wall of the fan joint pipe overlaps with the elastic telescopic sleeve and the adjusting rod respectively.

[0019] As a further embodiment of the present invention: the upper part of the base assembly is fixedly connected to the bottom end of the fixing frame, one side of the upper part of the fixing frame is fixedly connected to the limiting component, the other side of the limiting component is fixedly connected to the guide component, and one side of the limiting component is fixedly connected to the positioning component.

[0020] As a further aspect of the present invention: the base assembly includes a fixing seat, and a plurality of adsorption holes are provided below the fixing seat;

[0021] The fixed base is fixedly connected to the bottom end of the fixed frame;

[0022] The limiting component includes a fixed plate, a limiting plate is fixedly connected to the front of the fixed plate, a limiting groove is opened on the back of the limiting plate, the limiting groove is an annular limiting groove, the cross-section of the limiting groove is T-shaped, three limiting blocks are engaged in the limiting groove, and the three limiting blocks are attracted to the fixed plate, and a connecting rod is fixedly connected to the other side of the limiting block.

[0023] The back of the fixed plate is fixedly connected to the side of the fixed frame, the front of the limiting plate is fixedly connected to the positioning component, and the other ends of the three connecting rods are fixedly connected to the same guide component.

[0024] As a further aspect of the present invention: the guiding component includes a guiding shell, the guiding shell being arc-shaped, and a guiding groove being formed inside the guiding shell;

[0025] The back of the guide shell is fixedly connected to one end of each of the three connecting rods;

[0026] The positioning component includes a central positioning shaft, and a reinforcing bracket is fixedly connected to the outside of the central positioning shaft.

[0027] One end of the back of the central positioning shaft is fixedly connected to the front of the limiting plate.

[0028] As a further aspect of the present invention: the front and rear of the diversion component are respectively connected to two first conduits and two second conduits, the other ends of the two first conduits are respectively connected to the air inlet and air outlet of the fan, and the other end of the second conduit is fixedly connected to a hose, and both hoses are connected to the diversion component through the second conduit.

[0029] The fan is fixedly connected to the fixed base, and the other end of the first duct connected to the fan inlet is connected to the fixed base, and the other ends of the two hoses are connected to the adjusting rod.

[0030] As a further aspect of the present invention: the diversion assembly includes a diversion shell, and two flow grooves are formed inside the diversion shell. The two flow grooves are two arc-shaped grooves with different inner and outer diameters. One side of the two flow grooves is respectively engaged with the first connecting plate and the second connecting plate. The diversion shell is fixedly connected to the positioning frame. Two sealing covers are fixedly connected to the outside of the diversion shell, and the two sealing covers are respectively connected to the two flow grooves.

[0031] The first connecting plate and the second connecting plate are respectively connected to the two first conduits, the other side of the positioning frame is fixedly connected to the limiting plate, and the two sealing covers are respectively connected to one end of the two second conduits.

[0032] As a further embodiment of the present invention: one side of the movable component is fixedly connected to one end of the elastic telescopic bracket, and the other side of the elastic telescopic bracket is fixedly connected to the adjusting rod and the welding component respectively, and the adjusting rod is connected to two pressure components respectively;

[0033] The movable component is slidably connected in the guide groove, and the adjusting rod is connected to two flexible hoses.

[0034] As a further aspect of the present invention: the movable component includes a movable frame, and six bearings are snapped into the movable frame, with the same pulley sleeved inside two bearings at corresponding positions;

[0035] The pulley is slidably connected in the guide groove, and the other side of the movable frame is fixedly connected to the elastic telescopic bracket.

[0036] The welding assembly includes a welding head, which is connected to a welder;

[0037] The welding head is fixedly connected to one side of the elastic telescopic bracket, and the welding device is fixedly connected to one side of the elastic telescopic bracket.

[0038] As a further embodiment of the present invention: the pressure assembly includes a guide tube, one end of which is connected to a suction cup, and the other end of which is fixedly connected to a third guide tube. The other end of the third guide tube is fixedly connected to an elastic telescopic sleeve, and the elastic telescopic sleeve is connected to the guide tube through the third guide tube.

[0039] The elastic telescopic sleeve is fixedly connected to the elastic telescopic bracket, and the guide tube is connected to the adjusting rod.

[0040] Compared with the prior art, the beneficial effects of the present invention are as follows: The fan joint welding method and device, by setting up a fan, an elastic telescopic sleeve and a suction cup, when it is necessary to repair and weld the inside of the fan joint pipe, simply start the fan. During the operation of the fan, the extracted gas will be discharged into a hose along one of the first conduits, the flow groove and the second conduit. This allows the gas discharged by the fan to be quickly sprayed onto the welded part of the fan joint pipe, and the elastic telescopic support will gradually extend and contact the fan joint pipe, thereby pushing the welding head to fit into the fan joint pipe. This not only ensures the welding effect of the fan joint pipe, but also allows the device to be adapted to welding fan joint pipes of different sizes. At the same time, it achieves rapid cooling of the welding position of the fan joint pipe, avoiding injury to personnel, and can also speed up the welding efficiency of the fan joint pipe. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0042] Figure 1 This is a three-dimensional structural diagram of the wind turbine joint overlay welding method and apparatus provided in the embodiments of the present invention.

[0043] Figure 2 This is a three-dimensional structural diagram of the fan joint pipeline in the fan joint welding method and apparatus provided in the embodiments of the present invention.

[0044] Figure 3 This is a three-dimensional structural diagram of the support mechanism in the wind turbine joint overlay welding method and device provided in the embodiments of the present invention.

[0045] Figure 4 This is a three-dimensional structural diagram of the welding mechanism in the wind turbine joint welding method and apparatus provided in the embodiments of the present invention.

[0046] Figure 5 This is a three-dimensional structural diagram of the pressure component in the wind turbine joint overlay welding method and device provided in the embodiments of the present invention.

[0047] Figure 6 This is a three-dimensional structural diagram of the ventilation mechanism in the fan joint overlay welding method and device provided in the embodiments of the present invention.

[0048] Figure 7 This is a three-dimensional cross-sectional structural diagram of the shunt component in the wind turbine joint overlay welding method and device provided in the embodiments of the present invention.

[0049] Figure 8 This is a three-dimensional cross-sectional structural diagram of the limiting component in the wind turbine joint overlay welding method and device provided in the embodiments of the present invention. Detailed Implementation

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0052] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure will be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth.

[0053] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0054] Example 1

[0055] like Figure 1-3 and Figure 6 As shown, the present invention provides a technical solution: a welding device for repairing the outer or inner layer of a fan joint pipe, the fan joint welding device comprising a support mechanism 100, a ventilation mechanism 200, and a welding mechanism 300, and the fan joint welding method comprising the following welding steps:

[0056] The support mechanism 100 includes a base assembly 101, a fixing frame 102 disposed on the base assembly 101, a limiting component 103, and a positioning component 105, wherein the limiting component 103 is connected to the fixing frame 102; and,

[0057] The ventilation mechanism 200 includes a flow distribution assembly 201, a first duct 202 connected to the flow distribution assembly 201, a fan 203, and a second duct 204, wherein one end of the second duct 204 is connected to the other side of the flow distribution assembly 201; and,

[0058] The welding mechanism 300 includes a movable component 301, a flexible telescopic support 302, an adjusting rod 303 connected to the flexible telescopic support 302, and a welding component 305, wherein the movable component 301 is fixedly connected to the flexible telescopic support 302; and,

[0059] The fan joint pipe 400 is sleeved outside the welding mechanism 300, and the inner wall of the fan joint pipe 400 overlaps with the elastic telescopic sleeve 304d and the adjusting rod 303 respectively.

[0060] Furthermore: the base assembly 101 is fixedly connected to the bottom end of the fixing frame 102 at the top; one side of the fixing frame 102 is fixedly connected to the limiting assembly 103 at the top; the other side of the limiting assembly 103 is fixedly connected to the guide assembly 104; one side of the limiting assembly 103 is fixedly connected to the positioning assembly 105; the base assembly 101 includes a fixing seat 101a; several suction holes 101b are provided below the fixing seat 101a; the fixing seat 101a is fixedly connected to the bottom end of the fixing frame 102 at the top; the limiting assembly 103 includes a fixing plate 103a; a limiting plate 103b is fixedly connected to the front of the fixing plate 103a; a limiting groove 103c is provided on the back of the limiting plate 103b; the limiting groove 103c is an annular limiting groove; the cross-section of the limiting groove 103c is T-shaped; three limiting blocks 103d are engaged in the limiting groove 103c, and the three... Each limiting block 103d and the fixed plate 103a are attracted to each other. A connecting rod 103e is fixedly connected to the other side of the limiting block 103d. The back of the fixed plate 103a is fixedly connected to the corresponding side of the fixed frame 102. The front of the limiting plate 103b is fixedly connected to the positioning component 105. The other ends of the three connecting rods 103e are fixedly connected to the same guide component 104. The guide component 104 includes a guide shell 104a, which is arc-shaped. A guide groove 104b is provided inside the guide shell 104a. The back of the guide shell 104a is fixedly connected to the corresponding end of the three connecting rods 103e. The positioning component 105 includes a central positioning shaft 105a. A reinforcing bracket 105b is fixedly connected to the outside of the central positioning shaft 105a. One end of the back of the central positioning shaft 105a is fixedly connected to the front of the limiting plate 103b.

[0061] The front and rear of the diversion assembly 201 are respectively connected to two first conduits 202 and two second conduits 204. The other ends of the two first conduits 202 are respectively connected to the air inlet and air outlet of the fan 203. The other end of the second conduit 204 is fixedly connected to a hose 205, and both hoses 205 are connected to the diversion assembly 201 through the second conduit 204. The fan 203 is fixedly connected to the mounting base 101a. The other end of one of the first conduits 202 connected to the air inlet of the fan 203 is connected to the mounting base 101a. The other ends of the two hoses 205 are connected to the adjusting rod 303. The diversion assembly 201 includes a diversion shell 201a, and two flow channels are opened inside the diversion shell 201a. The passage 201b has two arc-shaped grooves with different inner and outer diameters. One side of each of the two passage 201b is respectively engaged with the first connecting plate 201c and the second connecting plate 201d. The flow divider shell 201a is fixedly connected to the positioning frame 201e. Two sealing covers 201f are fixedly connected to the outside of the flow divider shell 201a, and the two sealing covers 201f are respectively connected to the two passage 201b. The first connecting plate 201c and the second connecting plate 201d are respectively connected to the two first conduits 202. The other side of the positioning frame 201e is fixedly connected to the limiting plate 103b. The two sealing covers 201f are respectively connected to one end of the two second conduits 204.

[0062] In this embodiment, when it is necessary to repair and weld the inside of the fan joint pipe 400, it is only necessary to start the fan 203. During operation, the fan 203 will discharge the extracted gas along one of the first conduits 202, the flow channel 201b, and the second conduit 204 into one of the hoses 205. This allows the gas to quickly enter the guide pipe 304a connected to the third conduit 304c. At this time, the fan 203 will inject the gas into one of the hoses 205 and the elastic telescopic sleeve 304d. This causes the elastic telescopic sleeve 304d to expand rapidly while the suction cup 304b discharges the gas. Since the suction cup 304b connected to the guide pipe 304a is at this time... When 4b is in contact with the fan joint pipe 400, the gas emitted by the fan 203 can be quickly sprayed onto the welded part of the fan joint pipe 400. The elastic telescopic bracket 302 will also gradually extend and come into contact with the fan joint pipe 400, thereby pushing the welding head 305a to fit into the fan joint pipe 400. This not only ensures the welding effect of the fan joint pipe 400, making the device adaptable to welding fan joint pipes 400 of different sizes, but also achieves rapid cooling of the welding position of the fan joint pipe 400, avoiding injury to personnel, and can also speed up the welding efficiency of the fan joint pipe 400.

[0063] Example 2

[0064] Combined with appendix Figure 2 and attached Figure 4 It is found that: one side of the movable component 301 is fixedly connected to one end of the elastic telescopic bracket 302, the other side of the elastic telescopic bracket 302 is fixedly connected to the adjusting rod 303 and the welding component 305 respectively, the adjusting rod 303 is connected to the two pressure components 304 respectively, the movable component 301 is slidably connected in the guide groove 104b, and the adjusting rod 303 is connected to the two hoses 205.

[0065] The movable component 301 includes a movable frame 301a, which has six bearings 301b snapped into it. Two bearings 301b with corresponding positions are fitted with the same pulley 301c. The pulley 301c is slidably connected in the guide groove 104b. The other side of the movable frame 301a is fixedly connected to the elastic telescopic bracket 302. The welding component 305 includes a welding head 305a, which is connected to the welder 305b. The welding head 305a is fixedly connected to one side of the elastic telescopic bracket 302, and the welding device 305b is fixedly connected to one side of the elastic telescopic bracket 302. The pressure assembly 304 includes a guide tube 304a, one end of which is connected to the suction cup 304b, and the other end of which is fixedly connected to a third conduit 304c. The other end of the third conduit 304c is fixedly connected to an elastic telescopic sleeve 304d, which is connected to the guide tube 304a through the third conduit 304c. The elastic telescopic sleeve 304d is fixedly connected to the elastic telescopic bracket 302, and the guide tube 304a is connected to the adjusting rod 303.

[0066] In this embodiment: When the device is running, the fan 203, welder 305b, and welding head 305a will start. At this time, the driver set behind the central positioning shaft 105a will gradually rotate the central positioning shaft 105a, so that the central positioning shaft 105a will gradually drive the movable frame 301a and the elastic telescopic support 302 to rotate through the reinforcing bracket 105b. Since the center of the fan joint pipe 400 corresponds to the central positioning shaft 105a, the welding head 305a will rotate along the outer or inner wall of the fan joint pipe 400 at the same time as it starts. It moves at a uniform speed and achieves a uniform welding effect, so that the device can achieve automated welding during use, avoiding the uneven welding that occurs when welding manually, thereby ensuring the effect of the device on pipe repair and welding.

[0067] Example 3

[0068] Combined with appendix Figure 5 and attached Figure 6The results show that: S1. When using this device, two welding modes can be sampled. When selecting the first welding mode, the internal welding of the fan joint pipe 400 is performed. At this time, the fan joint pipe 400 needs to be placed outside the welding mechanism. After the extrusion position of the fan joint pipe 400 is fixed by the external fixing mechanism, the device can be started. The second welding mode is to weld the external of the fan joint pipe 400. At this time, after the fan joint pipe 400 is fixed by the external fixing mechanism, the adjusting rod 303 is connected to the outer wall of the fan joint pipe 400. After the connection is completed, the device is started.

[0069] S2. When the device is running, the fan 203, welder 305b and welding head 305a will start. At this time, the driver set behind the central positioning shaft 105a will gradually rotate the central positioning shaft 105a, so that the central positioning shaft 105a will gradually drive the movable frame 301a and the elastic telescopic support 302 to rotate through the reinforcing bracket 105b. Since the center of the fan joint pipe 400 corresponds to the central positioning shaft 105a, the welding head 305a will rotate along the outer or inner wall of the fan joint pipe 400 at the same time as it starts.

[0070] S3. During operation, the blower 203 will extract gas from one of the first ducts 202. At this time, the outside gas will enter the blower 203 through one of the suction cups 304b, the hose 205 and the guide pipe 304a. This allows the blower 203 to collect the exhaust gas generated during the welding of the blower joint pipe 400 by extracting the gas, thus preventing exhaust gas leakage. This not only ensures the safety of personnel but also reduces the pollution caused by the device to the environment.

[0071] S4. When it is necessary to repair and weld the inside of the fan joint pipe 400, simply start the fan 203. During operation, the fan 203 will draw gas along one of the first conduits 202, the flow channel 201b, and the second conduit 204 and discharge it into one of the hoses 205. This allows the gas to quickly enter the guide pipe 304a connected to the third conduit 304c. At this time, the fan 203 will inject the gas into one of the hoses and the elastic telescopic sleeve 304d. This causes the elastic telescopic sleeve 304d to expand rapidly while the suction cup 304b discharges gas. Since the suction cup 304b connected to the guide pipe 304a is in contact with the fan joint pipe 400, the gas discharged by the fan 203 can be quickly sprayed onto the welded part of the fan joint pipe 400. The elastic telescopic support 302 will also gradually extend and contact the fan joint pipe 400, thereby pushing the welding head 305a to fit with the fan joint pipe 400.

[0072] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0073] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0074] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A welding device for wind turbine joints, used for repairing the outer or inner layer of the welded surface of wind turbine joint pipes, characterized in that, The wind turbine joint overlay welding device includes a support mechanism (100), an air exchange mechanism (200), and an overlay welding mechanism (300): The support mechanism (100) includes a base assembly (101), a fixing frame (102) disposed on the base assembly (101), a limiting component (103), and a positioning component (105), wherein the limiting component (103) is connected to the fixing frame (102), and the positioning component (105) includes a central positioning shaft (105a), with a driver disposed behind the central positioning shaft (105a); and, The ventilation mechanism (200) includes a flow splitting component (201), a first conduit (202) connected to the flow splitting component (201), a fan (203), and a second conduit (204). One end of the second conduit (204) is connected to the other side of the flow splitting component (201). The flow splitting component (201) includes a flow splitting shell (201a). Two flow grooves (201b) are formed inside the flow splitting shell (201a). The two flow grooves (201b) are two arc-shaped grooves with different inner and outer diameters. One side of the two flow grooves (201b) is respectively engaged with the first connecting plate (201c) and the second connecting plate (201d). The flow splitting shell (201a) is fixedly connected to the positioning frame (201e). Two sealing covers (201f) are fixedly connected to the outside of the flow splitting shell (201a). The two sealing covers (201f) are respectively connected to the two flow grooves (201b). The first connecting plate (201c) and the second connecting plate (201d) are respectively connected to the two first conduits (202), the other side of the positioning frame (201e) is fixedly connected to the limiting plate (103b), and the two sealing covers (201f) are respectively connected to one end of the two second conduits (204); as well as, The surfacing mechanism (300) includes a movable component (301), an elastic telescopic bracket (302), an adjusting rod (303) connected to the elastic telescopic bracket (302), and a welding component (305). The movable component (301) is fixedly connected to the elastic telescopic bracket (302). The driver is used to drive the surfacing mechanism (300) to rotate around the central positioning axis (105a). The surfacing mechanism (300) also includes a pressure component (304). The pressure component (304) includes an elastic telescopic sleeve (304d). The elastic telescopic sleeve (304d) is fixedly connected to the elastic telescopic bracket (302) and communicates with the ventilation mechanism (200) via the adjusting rod (303). as well as, The fan joint pipe (400) is sleeved outside the welding mechanism (300), and the inner wall of the fan joint pipe (400) overlaps with the elastic telescopic sleeve (304d) and the adjusting rod (303) respectively.

2. The wind turbine joint overlay welding device as described in claim 1, characterized in that: The base assembly (101) is fixedly connected to the bottom of the fixing frame (102) at the top. One side of the fixing frame (102) is fixedly connected to the limiting assembly (103). The other side of the limiting assembly (103) is fixedly connected to the guide assembly (104). One side of the limiting assembly (103) is fixedly connected to the positioning assembly (105).

3. The wind turbine joint overlay welding device as described in claim 2, characterized in that: The base assembly (101) includes a fixing seat (101a), and a plurality of suction holes (101b) are provided below the fixing seat (101a). The fixing base (101a) is fixedly connected to the bottom end of the fixing frame (102); The limiting component (103) includes a fixed plate (103a), a limiting plate (103b) is fixedly connected to the front of the fixed plate (103a), a limiting groove (103c) is opened on the back of the limiting plate (103b), the limiting groove (103c) is an annular limiting groove, the cross-section of the limiting groove (103c) is T-shaped, three limiting blocks (103d) are engaged in the limiting groove (103c), and the three limiting blocks (103d) are attracted to the fixed plate (103a), and a connecting rod (103e) is fixedly connected to the other side of the limiting block (103d). The back of the fixed plate (103a) is fixedly connected to the side of the fixed frame (102), the front of the limiting plate (103b) is fixedly connected to the positioning component (105), and the other end of the three connecting rods (103e) is fixedly connected to the same guide component (104).

4. The wind turbine joint overlay welding device as described in claim 3, characterized in that: The guide assembly (104) includes a guide shell (104a), which is arc-shaped and has a guide groove (104b) inside. The back of the guide shell (104a) is fixedly connected to one end of each of the three connecting rods (103e); The positioning component (105) includes a central positioning shaft (105a), and a reinforcing bracket (105b) is fixedly connected to the outside of the central positioning shaft (105a). One end of the back of the central positioning shaft (105a) is fixedly connected to the front of the limiting plate (103b).

5. The wind turbine joint overlay welding device as described in claim 3, characterized in that: The front and rear of the diversion component (201) are connected to two first conduits (202) and two second conduits (204) respectively. The other ends of the two first conduits (202) are connected to the air inlet and air outlet of the fan (203) respectively. The other end of the second conduit (204) is fixedly connected to a hose (205), and both hoses (205) are connected to the diversion component (201) through the second conduit (204). The fan (203) is fixedly connected to the fixed base (101a), and the other end of the first conduit (202) connected to the air inlet of the fan (203) is connected to the fixed base (101a), and the other ends of the two hoses (205) are connected to the adjusting rod (303).

6. The wind turbine joint overlay welding device as described in claim 4, characterized in that: The movable component (301) is fixedly connected to one end of the elastic telescopic bracket (302) on one side, and the other side of the elastic telescopic bracket (302) is fixedly connected to the adjusting rod (303) and the welding component (305) respectively. The adjusting rod (303) is connected to two pressure components (304) respectively. The movable component (301) is slidably connected in the guide groove (104b), and the adjusting rod (303) is connected to the two hoses (205).

7. The wind turbine joint overlay welding device as described in claim 1, characterized in that: The movable component (301) includes a movable frame (301a), in which six bearings (301b) are snapped together, and two bearings (301b) at corresponding positions are fitted with the same pulley (301c). The pulley (301c) is slidably connected in the guide groove (104b), and the other side of the movable frame (301a) is fixedly connected to the elastic telescopic bracket (302); The welding assembly (305) includes a welding head (305a) connected to a welder (305b); The welding head (305a) is fixedly connected to one side of the elastic telescopic bracket (302), and the welder (305b) is fixedly connected to one side of the elastic telescopic bracket (302).

8. The wind turbine joint overlay welding device as described in claim 1, characterized in that: The pressure assembly (304) includes a guide tube (304a), one end of which is connected to a suction cup (304b), and the other end of which is fixedly connected to a third conduit (304c). The other end of the third conduit (304c) is fixedly connected to an elastic telescopic sleeve (304d), and the elastic telescopic sleeve (304d) is connected to the guide tube (304a) through the third conduit (304c).

9. A method for overlaying welding of a fan joint, applied in a welding apparatus for repairing the outer or inner layer of a fan joint pipe, comprising the following welding steps: S1. When using this device, two welding modes can be sampled. When selecting the first welding mode, the internal of the fan joint pipe (400) is welded. At this time, the fan joint pipe (400) needs to be placed outside the welding mechanism. After the extrusion position of the fan joint pipe (400) is fixed by the external fixing mechanism, the device can be started. The second welding mode is to weld the outside of the fan joint pipe (400). At this time, the fan joint pipe (400) needs to be fixed by the external fixing mechanism. Then, the adjusting rod (303) is connected to the outer wall of the fan joint pipe (400). After the connection is completed, the device is started. S2. When the device is running, the fan (203), welder (305b) and welding head (305a) will start. At this time, the driver set behind the central positioning shaft (105a) will gradually rotate the central positioning shaft (105a), so that the central positioning shaft (105a) will gradually drive the movable frame (301a) and the elastic telescopic support (302) to rotate through the reinforcing bracket (105b). Since the center of the fan joint pipe (400) corresponds to the central positioning shaft (105a), the welding head (305a) will rotate along the outer or inner wall of the fan joint pipe (400) at the same time as it starts, so as to achieve the overlay welding of the inner or outer wall. S3. During operation, the blower (203) will extract gas from one of the first conduits (202). At this time, the outside gas will enter the blower (203) through one of the suction cups (304b), the hose (205) and the guide pipe (304a), so that the blower (203) can collect the waste gas generated during the welding of the blower joint pipe (400) of the device by extracting gas. S4. When it is necessary to repair and weld the inside of the fan joint pipe (400), simply start the fan (203). During operation, the fan (203) will discharge the extracted gas along one of the first conduits (202), the flow channel (201b), and the second conduit (204) into one of the hoses (205), allowing the gas to quickly enter the guide pipe (304a) connected to the third conduit (304c). At this time, the fan (203) will inject the gas into one of the hoses and the elastic telescopic sleeve (304d). Inside, the elastic telescopic sleeve (304d) expands rapidly while the suction cup (304b) discharges gas. Since the suction cup (304b) connected to the guide pipe (304a) is in a close fit with the fan joint pipe (400) at this time, the gas discharged by the fan (203) can be quickly sprayed onto the welded part of the fan joint pipe (400), and the elastic telescopic bracket (302) will also gradually extend and contact the fan joint pipe (400), thereby pushing the welding head (305a) to fit with the fan joint pipe (400).

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