Automatic circular seam welding device for oil conveying pipeline

Abstract

The invention discloses an automatic circular seam welding device for a petroleum conveying pipeline, and relates to the technical field of pipeline welding, the automatic circular seam welding device comprises a magnetic welding trolley main body and a fourth electric telescopic rod, and one end of the magnetic welding trolley main body is fixedly connected with the fourth electric telescopic rod; a first fixing seat is rotatably connected to the other end of the fourth electric telescopic rod, a welding head is placed on the inner side of the first fixing seat, a second fixing seat is fixedly connected to one end of the first fixing seat, a wire feeding head is placed on the inner side of the second fixing seat, and a dirt removing mechanism is fixedly connected to one end of the magnetic welding trolley body. According to the cleaning mechanism, cleaning liquid can be sprayed to the oil stain surface at the end of the pipeline through a water spraying cylinder, so that the oil stain is easier to clean, and meanwhile, a cleaning plate can drive bristles to quickly rotate at the end of the pipeline, so that the oil stain at the end of the pipeline is completely cleaned, and it is ensured that no oil stain is attached to the end of the pipeline; therefore, the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline welding, in particular to an automatic annular seam welding device for oil transportation pipelines. Background Art

[0002] The oil pipeline (also called pipeline, pipeline) is composed of oil pipes and their accessories, and is equipped with corresponding oil pump units according to the needs of the process flow. It is designed and installed into a complete pipeline system to complete the tasks of oil loading and unloading and transfer. There are many ways to connect oil pipelines, and welding is a more common way. When welding oil pipelines, it is necessary to weld the annular seams between adjacent pipelines. Before welding the pipelines, it is necessary to grind the ends of all pipelines into grooves to make the two ends of the pipeline present a cone, so that the deformation of the pipeline can be better controlled during welding. At present, there are two welding methods: manual welding and automatic welding. Among them, the commonly used welding equipment for automatic welding is the magnetic welding trolley.

[0003] The invention patent with the authorization announcement number CN117754198B discloses a large-scale pipeline welding device, including a mounting seat, a rotating ring rotatably connected on the inner wall of the mounting seat, a welding head is arranged on the inner wall of the rotating ring, a driving mechanism is arranged at one end of the rotating ring, and a cleaning mechanism is arranged on the inner wall of the rotating ring, and the cleaning mechanism includes a mounting assembly, a driving assembly, a rack assembly, a cleaning assembly, a scraping assembly and two first telescopic parts, and the top of the first telescopic part is arranged on the inner wall of the rotating ring; in the large-scale pipeline welding device of the invention, the driving assembly drives the cleaning assembly to reciprocate between the two pipelines through the rack assembly, thereby scraping off the oil stains at the pipeline port, and at the same time, the scraping assembly scrapes off the oil stains on the cleaning assembly, so that the cleaning assembly can continuously clean the end of the pipeline, without the need for manual cleaning by the staff, making the cleaning of the end of the pipeline more convenient; However, the above invention still has the following problems: the above invention mainly cleans the oil stains on the end of the pipe by rotating the cleaning head, and in order to realize the cleaning of the cleaning head by the first scraper, the surface of the cleaning head is not provided with a structure such as bristles, and the surface of the cleaning head is relatively smooth. At the same time, since the oil stains are hydrophobic and strongly adherent, it is easy to form a firm oil film on the surface of the pipe. The oil stains cannot be completely cleaned by simply rotating the cleaning head, and there will be oil stains left at the end of the pipe, thereby affecting the quality of welding; At the same time, the existing magnetic welding trolley does not have the function of automatically cleaning the oil stains at the end of the pipeline. Therefore, in view of the above problems, an automatic annular seam welding device for oil transportation pipelines is proposed. Summary of the invention

[0004] The object of the present invention is to provide an automatic annular seam welding device for oil pipelines to solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A circular seam automatic welding device for an oil pipeline comprises a magnetic welding trolley body and a fourth electric telescopic rod, one end of the magnetic welding trolley body is fixedly connected to the fourth electric telescopic rod, the other end of the fourth electric telescopic rod is rotatably connected to a first fixed seat, a welding head is placed on the inner side of the first fixed seat, one end of the first fixed seat is fixedly connected to a second fixed seat, a wire feeding head is placed on the inner side of the second fixed seat, one end of the magnetic welding trolley body is fixedly connected to a cleaning mechanism, one end of the cleaning mechanism is provided with a self-cleaning mechanism, one side of the welding head is provided with a positioning mechanism, and the positioning mechanism is fixedly connected to the cleaning mechanism, the cleaning mechanism comprises a cleaning plate, and the number of the self-cleaning mechanisms is two, and they are symmetrically distributed on both sides of the cleaning plate.

[0006] Preferably, the cleaning mechanism comprises a fixed plate fixedly connected to the main body of the magnetic welding trolley, one end of the fixed plate is fixedly connected to the second motor, the end of the main shaft of the second motor is fixedly connected to the connecting frame, and the connecting frame is rotatably connected to the fixed plate, the connecting frame is rotatably connected to the positioning mechanism, the other end of the connecting frame is fixedly connected to the first electric telescopic rod, the outer side of one end of the first electric telescopic rod is fixedly connected to the connecting cover, and the self-cleaning mechanism is arranged on the inner side of the connecting cover, one end of the connecting cover is rotatably connected to the door panel, the inner side of the connecting cover is fixedly connected to the first motor, the end of the main shaft of the first motor is fixedly connected to the rotating shaft, the inner side of the other end of the rotating shaft is fixedly connected to the first bearing, and the inner side of the first bearing is fixedly connected to the first electric telescopic rod, the outer side of the rotating shaft is slidably connected to the first adjusting component, one end of the first adjusting component is rotatably connected to the cleaning plate, one end of the cleaning plate is fixedly connected to the bristles, the inner side of the top end of the connecting cover is connected to a water spray barrel, the other end of the water spray barrel is connected to a water pump through a connecting pipe, the inlet end of the water pump is connected to a liquid storage tank, and a notch is opened at one end of the connecting cover.

[0007] Preferably, the first adjustment component includes a first movable cylinder slidably connected to the rotating shaft, the first movable cylinder is located in a self-cleaning mechanism and is slidably connected, there are two first movable cylinders, and they are symmetrically distributed on both sides of the rotating shaft, the outer sides of the two first movable cylinders are fixedly connected with connecting rings, the connecting rings are rotatably connected to the cleaning plate, the inner sides of one ends of the two first movable cylinders are spirally connected with first locking screws, and the first locking screws are fitted with the rotating shaft.

[0008] Preferably, four cleaning plates are arranged around each of the connecting rings, and adjacent cleaning plates around the same connecting ring are movably arranged, and adjacent cleaning plates around different connecting rings are rotatably connected.

[0009] Preferably, the self-cleaning mechanism includes a supporting shaft fixedly connected to the connecting cover, the top end of the supporting shaft is rotatably connected to a connecting disk, one end of the connecting disk is rotatably connected to a roller, the outer side of the roller is fixedly connected to a lever, the inner side of the roller is fixedly connected to a sleeve, the inner side of the sleeve is slidably connected to a universal joint, the inner side of one end of the sleeve is spirally connected to a third locking screw, and the third locking screw is fitted with the universal joint, the other end of the universal joint is fixedly connected to a bevel gear, one end of the bevel gear is meshed with a bevel gear ring, and one end of the bevel gear ring is provided with a second adjustment component.

[0010] Preferably, the second adjustment assembly includes a second movable cylinder fixedly connected to the bevel gear ring, and the second movable cylinder is slidably connected to the first movable cylinder, a second locking screw is spirally connected to the inner side of one end of the second movable cylinder, and the second locking screw is fitted with the first movable cylinder, a second bearing is fixedly connected to the outer side of the second movable cylinder, one end of the second bearing is fixedly connected to an L-shaped plate, the other end of the L-shaped plate is fixedly connected to a third bearing, and the third bearing is fixedly connected to the universal joint.

[0011] Preferably, the second adjustment assembly also includes a support column fixedly connected to the L-shaped plate, a guide rail is slidably connected to the inner side of the bottom end of the support column, and the guide rail is fixedly connected to the connecting cover, a fourth locking screw is spirally connected to the inner side of one end of the support column, and one end of the fourth locking screw is in contact with the guide rail.

[0012] Preferably, the positioning mechanism includes a first rotating seat fixedly connected to the connecting frame, an outer shell rotatably connected to the inner side of the first rotating seat, an inner shell slidably connected to the inner side of the outer shell, the other end of the inner shell is rotatably connected to the second rotating seat, one end of the second rotating seat is fixedly connected to the connecting shell, a temporary fixing component is provided on the inner side of the connecting shell, the inner sides of one end of the outer shell and the inner shell are fixedly connected to a limiting axis, and the outer shell and the inner shell are rotatably connected to the corresponding first rotating seat and second rotating seat through the limiting axis, one end of the first rotating seat and the second rotating seat are fixedly connected to a cross plate, and the cross plate and one end of the outer shell are fixedly connected to a second electric The electric telescopic rod is a movable telescopic rod, the other end of the second electric telescopic rod is fixedly connected with a clamping block, one end of the connecting shell is fixedly connected with the third electric telescopic rod, the other end of the third electric telescopic rod is rotatably connected with a rotating plate, the other end of the rotating plate is fixedly connected with a second positioning plate, one end of the second positioning plate is rotatably connected with the first positioning plate, one end of the first positioning plate and the second positioning plate are both rotatably connected with a second screw, the outer side of the second screw is spirally connected with a threaded cylinder, one end of the rotating shaft of the rotating plate is fixedly connected with the first screw, and the first screw is rotatably connected to the third electric telescopic rod, the outer side of the first screw is spirally connected with a threaded ring, and the threaded ring is in contact with the third electric telescopic rod.

[0013] Preferably, the temporary fixing assembly comprises a fifth electric telescopic rod fixedly connected to the connecting shell, the other end of the fifth electric telescopic rod is fixedly connected to an electromagnet, and the electromagnet is slidably connected to the connecting shell.

[0014] Preferably, one end of the dirt cleaning mechanism is fixedly connected to a hot air blower, the outlet end of the hot air blower is connected to an air outlet housing via a connecting pipe, and the air outlet housing is fixedly connected to the dirt cleaning mechanism.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. An automatic welding device for annular seams of oil pipelines. Through a cleaning mechanism, a water spray can be used to spray cleaning liquid onto the oily surface of the oil pipeline groove, making it easier to clean the oil. At the same time, a cleaning plate can be quickly rotated on the oil pipeline groove with bristles, so that the oil on the oil pipeline groove is completely cleaned, ensuring that no oil adheres to the oil pipeline groove, thereby improving the quality of welding. The first moving cylinder can adjust the inclination angle between adjacent cleaning plates according to the angle of the oil pipeline groove, ensuring that the bristles are in close contact with the pipe end, improving the cleaning effect, and at the same time improving the applicability of the device to meet the use requirements of different pipeline grooves.

[0016] 2. An automatic welding device for annular seams of oil pipelines. Through the bristle cleaning mechanism, when the cleaning plate with the bristles rotates on the groove of the oil pipeline, the roller and the lever will also rotate with the rotation of the cleaning plate, so that the lever moves the bristles, and the oil and foreign matter on the surface of the bristles are removed under the movement of the lever, so as to ensure that the bristles are always in a clean state, thereby further improving the effect of the bristle cleaning, and the roller can be adjusted accordingly according to the inclination angle of the cleaning plate, so as to meet different usage requirements and improve the applicability of the device.

[0017] 3. An automatic welding device for annular seams of oil pipelines. When there are impurities such as oil, scale, etc. on the surface of the workpiece, or the surface processing accuracy is not high and there are uneven surfaces, the adsorption force between the trolley and the workpiece surface will be uneven, which will cause the trolley to deviate from the predetermined welding trajectory during walking, resulting in inaccurate weld position, affecting the welding quality. In severe cases, re-welding may be required. Through the positioning mechanism, the first positioning plate and the second positioning plate are respectively fitted with the grooves of the pipes on both sides during welding, and the main body of the magnetic welding trolley is guided and positioned by the first positioning plate and the second positioning plate to ensure that when the adsorption force between the main body of the magnetic welding trolley and the surface of the workpiece is uneven, the main body of the magnetic welding trolley will not deviate, thereby improving the quality of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Figure 1 The present invention is a schematic diagram of the overall structure of an automatic annular seam welding device for oil pipelines.

[0020] Figure 2 The present invention is a schematic diagram of the internal installation structure of a connection cover of an automatic annular seam welding device for a petroleum pipeline.

[0021] Figure 3 The present invention is a schematic diagram of the installation structure of a connecting ring of an automatic annular seam welding device for a petroleum pipeline.

[0022] Figure 4 The present invention is a schematic diagram of the installation structure of a cleaning plate of an automatic annular seam welding device for a petroleum pipeline.

[0023] Figure 5 The present invention is a schematic diagram of the installation structure of a first bearing of an automatic annular seam welding device for a petroleum pipeline.

[0024] Figure 6 The present invention is a schematic diagram of the installation structure of a lever of an automatic annular seam welding device for a petroleum pipeline.

[0025] Figure 7 The present invention is a schematic diagram of the installation structure of a universal joint of an automatic annular seam welding device for a petroleum pipeline.

[0026] Figure 8 The present invention is a schematic diagram of the installation structure of an outer shell of an automatic annular seam welding device for a petroleum pipeline.

[0027] Fig. 9 The present invention is a schematic diagram of the installation structure of a threaded barrel of an automatic annular seam welding device for a petroleum pipeline.

[0028] Fig.10 The present invention is a schematic diagram of the installation structure of a second electric telescopic rod of an automatic annular seam welding device for a petroleum pipeline.

[0029] Fig.11 The present invention is a schematic diagram of the installation structure of a clamping block of an automatic annular seam welding device for a petroleum pipeline.

[0030] Fig.12The present invention is a schematic diagram of the installation structure of an electromagnet of an automatic annular seam welding device for a petroleum pipeline.

[0031] Fig.13 The present invention is a schematic diagram of the installation structure of an automatic annular seam welding device for a petroleum pipeline when placed on a petroleum pipeline for use.

[0032] In the figure: 1, cleaning mechanism; 101, fixing plate; 102, connecting frame; 103, first electric telescopic rod; 104, connecting cover; 105, door panel; 106, notch; 107, first motor; 108, rotating shaft; 109, first bearing; 110, first moving cylinder; 111, first locking screw; 112, connecting ring; 113, cleaning plate; 114, brush; 115, water spray cylinder; 116, liquid storage tank; 117, water pump; 118, second motor; 2. Self-cleaning mechanism; 201. Second moving cylinder; 202. Second locking screw; 203. Bevel gear ring; 204. Bevel gear; 205. Second bearing; 206. L-shaped plate; 207. Third bearing; 208. Universal joint; 209. Sleeve; 210. Third locking screw; 211. Roller; 212. Push rod; 213. Connecting plate; 214. Support shaft; 215. Support column; 216. Fourth locking screw; 217. Guide rail; 3. Positioning mechanism; 301. outer shell; 302. second electric telescopic rod; 303. inner shell; 304. second rotating seat; 305. horizontal plate; 306. clamping block; 307. first rotating seat; 308. connecting shell; 309. electromagnet; 310. fifth electric telescopic rod; 311. limit shaft; 312. third electric telescopic rod; 313. rotating plate; 314. first screw; 315. threaded ring; 316. first positioning plate; 317. second screw; 318. threaded barrel; 319. second positioning plate; 4. Magnetic welding trolley body; 5. Fourth electric telescopic rod; 6. First fixed seat; 7. Second fixed seat; 8. Wire feeding head; 9. Hot air blower; 10. Air outlet shell; 11. Welding head. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific embodiments, wherein the accompanying drawings are only used for illustrative descriptions and represent only schematic diagrams rather than actual drawings, and should not be understood as limiting the present invention. In order to better illustrate the specific embodiments of the present invention, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Based on the specific embodiments of the present invention, all other specific embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, which 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 cannot be understood as a limitation on the present invention. In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The present invention is further explained below in conjunction with specific implementation methods.

[0035] like Figure 1-Figure 13 As shown, an automatic circumferential seam welding device for oil pipelines comprises a magnetic welding trolley body 4 and a fourth electric telescopic rod 5, one end of the magnetic welding trolley body 4 is fixedly connected to the fourth electric telescopic rod 5, the other end of the fourth electric telescopic rod 5 is rotatably connected to the first fixed seat 6, a welding head 11 is placed on the inner side of the first fixed seat 6, one end of the first fixed seat 6 is fixedly connected to the second fixed seat 7, a wire feeding head 8 is placed on the inner side of the second fixed seat 7, one end of the magnetic welding trolley body 4 is fixedly connected to a cleaning mechanism 1, one end of the cleaning mechanism 1 is provided with a self-cleaning mechanism 2, a positioning mechanism 3 is provided on one side of the welding head 11, and the positioning mechanism 3 is fixedly connected to the cleaning mechanism 1, the cleaning mechanism 1 comprises a cleaning plate 113, and the number of the self-cleaning mechanisms 2 is two, and they are symmetrically distributed on both sides of the cleaning plate 113.

[0036] As a further improvement of the present invention, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the cleaning mechanism 1 includes a fixed plate 101 fixedly connected to the magnetic welding trolley body 4, one end of the fixed plate 101 is fixedly connected to the second motor 118, the end of the main shaft of the second motor 118 is fixedly connected to the connecting frame 102, and the connecting frame 102 is rotatably connected to the fixed plate 101, the connecting frame 102 is rotatably connected to the positioning mechanism 3, the other end of the connecting frame 102 is fixedly connected to the first electric telescopic rod 103, the outer side of one end of the first electric telescopic rod 103 is fixedly connected to the connecting cover 104, and the self-cleaning mechanism 2 is arranged on the inner side of the connecting cover 104, one end of the connecting cover 104 is rotatably connected to the door panel 105, the inner side of the connecting cover 104 is fixedly connected to the first motor 107, and the end of the main shaft of the first motor 107 is fixedly connected A rotating shaft 108 is provided, and a first bearing 109 is fixedly connected to the inner side of the other end of the rotating shaft 108, and the inner side of the first bearing 109 is fixedly connected to the first electric telescopic rod 103, and a first adjusting component is slidably connected to the outer side of the rotating shaft 108, and a cleaning plate 113 is rotatably connected to one end of the first adjusting component, and a brush 114 is fixedly connected to one end of the cleaning plate 113, and a water spray barrel 115 is connected to the inner side of the top of the connecting cover 104, and the other end of the water spray barrel 115 is connected to a water pump 117 through a connecting pipe, and the inlet end of the water pump 117 is connected to a liquid storage tank 116, and the liquid storage tank 116 can be placed on the ground for use alone, and a notch 106 is provided at one end of the connecting cover 104, and the notch 106 can ensure that the cleaning plate 113 can extend out of the connecting cover 104. When the magnetic welding trolley body 4 is placed on the outside of the oil pipeline, the second motor 118 drives the connecting frame 102 to rotate relative to the fixed plate 101, and then the connecting frame 102 drives the cleaning plate 113 to rotate relative to the fixed plate 101 through the first electric telescopic rod 103, the first bearing 109, the rotating shaft 108, and the first adjusting component, so that the cleaning plate 113 with the bristles 114 can be attached to the groove of the oil pipeline, ensuring that the cleaning plate 113 can carry the bristles 114 to clean the oil pipeline groove surface oil stains and foreign matter, and the first motor 107 can drive the cleaning plate 113 and the bristles 114 to rotate relative to the groove of the oil pipeline through the rotating shaft 108 and the first adjusting component. The first motor 107 rotates counterclockwise with the rotating shaft 108, and the cleaning plate 113 and the brush 114 rotate to clean the oil stains and foreign objects, and the water pump 117 can spray the cleaning liquid inside the liquid storage tank 116 to the surface of the oil stains and foreign objects on the groove of the oil pipeline through the water spray barrel 115, so that the oil stains and foreign objects are easier to clean, thereby completely cleaning the oil stains on the groove of the oil pipeline, ensuring that no oil stains are attached to the groove of the oil pipeline, thereby improving the quality of welding, and the cleaning plate 113 will also move with the movement of the magnetic welding trolley body 4, so that the cleaning plate 113 with the brush 114 cleans the surroundings of the groove of the oil pipeline, and after cleaning, the groove of the oil pipeline can be welded through the welding head 11;The first motor 107 and the second motor 118 are both servo motors. ;

[0037] As a further improvement of the present invention, Figure 2 , Figure 3 As shown, the first adjustment component includes a first movable cylinder 110 slidably connected to the rotating shaft 108, the first movable cylinder 110 is located in the self-cleaning mechanism 2 and is slidably connected, the number of the first movable cylinders 110 is two, and they are symmetrically distributed on both sides of the rotating shaft 108, the outer sides of the two first movable cylinders 110 are fixedly connected with a connecting ring 112, the connecting ring 112 is rotatably connected to the cleaning plate 113, the inner sides of one end of the two first movable cylinders 110 are spirally connected with a first locking screw 111, and the first locking screw 111 is fitted with the rotating shaft 108. When the inclination angle of the bevel of the oil pipeline of different production batches changes, the first locking screws on both sides of the vertical center line of the adjusting shaft 108 are adjusted. A movable cylinder 110 makes the first movable cylinder 110 move along the surface of the rotating shaft 108. At the same time, the first movable cylinder 110 will also move with the connecting ring 112, so that the connecting ring 112 and the cleaning plate 113 will rotate relative to each other, so that the inclination angle of the cleaning plate 113 changes, until the inclination angle of the cleaning plate 113 meets the inclination angle of the oil pipeline groove, ensuring that the bristles 114 are in close contact with the oil pipeline groove, improving the cleaning effect, and at the same time improving the applicability of the device to meet the use requirements of different batches of oil pipeline grooves. After the adjustment is completed, the rotating shaft 108 and the first movable cylinder 110 are fixed to each other through the first locking screw 111.

[0038] As a further improvement of the present invention, Figure 2 , Figure 3 and Figure 5 As shown, four cleaning plates 113 are arranged around each connecting ring 112, and the adjacent cleaning plates 113 around the same connecting ring 112 are movably arranged, and the adjacent cleaning plates 113 around different connecting rings 112 are rotatably connected to ensure normal adjustment of the cleaning plates 113.

[0039] As a further improvement of the present invention, Figure 2 , Figure 6 and Figure 7As shown, the self-cleaning mechanism 2 includes a support shaft 214 fixedly connected to the connecting cover 104, the top end of the support shaft 214 is rotatably connected to a connecting disk 213, one end of the connecting disk 213 is rotatably connected to a roller 211, the outer side of the roller 211 is fixedly connected to a lever 212, the inner side of the roller 211 is fixedly connected to a sleeve 209, the inner side of the sleeve 209 is slidably connected to a universal joint 208, the inner side of one end of the sleeve 209 is spirally connected to a third locking screw 210, and the third locking screw 210 is fitted with the universal joint 208, the other end of the universal joint 208 is fixedly connected to a bevel gear 204, one end of the bevel gear 204 is meshed with a bevel gear ring 203, and one end of the bevel gear ring 203 is provided with a second adjusting component, under the action of the connecting disk 213, the roller 211 can both rotate itself and move around the vertical center of the support shaft 214. The center line rotates to ensure that the roller 211 can be adjusted accordingly according to the inclination angle of the cleaning plate 113, so that the roller 211 and the adjacent cleaning plate 113 are in a parallel state, thereby meeting different usage requirements and improving the applicability of the device; when the shaft 108 rotates, the shaft 108 will rotate together with the second moving cylinder 201 through the first moving cylinder 110, and then the second moving cylinder 201 will rotate with the bevel gear ring 203, and then the bevel gear ring 203 will rotate with the sleeve 209, the roller 211 and the lever 212 through the bevel gear 204 and the universal joint 208 towards the direction close to the bristles 114, and the lever 212 will move the bristles 114, and the oil and foreign matter on the surface of the bristles 114 will be removed under the movement of the lever 212, thereby ensuring that the bristles 114 are always in a clean state, thereby further improving the cleaning effect of the bristles 114.

[0040] As a further improvement of the present invention, Figure 3 , Figure 5 As shown, the second adjustment assembly includes a second moving cylinder 201 fixedly connected to the bevel gear ring 203, and the second moving cylinder 201 is slidably connected to the first moving cylinder 110, a second locking screw 202 is spirally connected to the inner side of one end of the second moving cylinder 201, and the second locking screw 202 is fitted with the first moving cylinder 110, a second bearing 205 is fixedly connected to the outer side of the second moving cylinder 201, one end of the second bearing 205 is fixedly connected to an L-shaped plate 206, and the other end of the L-shaped plate 206 is fixedly connected There is a third bearing 207, and the third bearing 207 is fixedly connected to the universal joint 208. When the inclination angle of the cleaning plate 113 changes and the position of the roller 211 needs to be adjusted accordingly, the second movable cylinder 201 is rotated around the vertical center line of the support shaft 214 through the second bearing 205, the L-shaped plate 206, the third bearing 207, the universal joint 208 and the sleeve 209 with the roller 211 and the connecting plate 213, so that the roller 211 is in a parallel state with the adjacent cleaning plate 113; At the same time, the degree range of the oil pipeline groove is generally 30 degrees to 45 degrees, that is, the cleaning plate 113 will also be adjusted accordingly within the range of 30 degrees to 45 degrees, and the roller 211 will also be adjusted accordingly within the range of 30 degrees to 45 degrees with the cleaning plate 113. The length of the lever 212 can be designed according to actual needs to ensure that when the cleaning plate 113 and the roller 211 are adjusted accordingly within the range of 30 degrees to 45 degrees, the lever 212 can always be in contact with the bristles 114, ensuring that the lever 212 can always achieve the cleaning of the bristles 114.

[0041] As a further improvement of the present invention, Figure 6 As shown, the second adjustment component also includes a support column 215 fixedly connected to the L-shaped plate 206, and a guide rail 217 is slidably connected to the inner side of the bottom end of the support column 215, and the guide rail 217 is fixedly connected to the connecting cover 104, and a fourth locking screw 216 is spirally connected to the inner side of one end of the support column 215, and one end of the fourth locking screw 216 is in contact with the guide rail 217. The support column 215 will also move with the movement of the L-shaped plate 206. When the roller 211 is adjusted to a suitable position, the support column 215 and the guide rail 217 are fixed together by the fourth locking screw 216. Under the fixed support of the support column 215, the stability of the L-shaped plate 206, the bevel gear 204 and the roller 211 during operation can be improved.

[0042] As a further improvement of the present invention, Figure 8 , Fig. 9 , Fig.10 and Fig.11As shown, the positioning mechanism 3 includes a first rotating seat 307 fixedly connected to the connecting frame 102, an outer shell 301 rotatably connected to the inner side of the first rotating seat 307, an inner shell 303 is slidably connected to the inner side of the outer shell 301, the other end of the inner shell 303 is rotatably connected to the second rotating seat 304, one end of the second rotating seat 304 is fixedly connected to the connecting shell 308, and a temporary fixing component is arranged on the inner side of the connecting shell 308, the inner sides of one end of the outer shell 301 and the inner shell 303 are both fixedly connected to the limiting shaft 311, and the outer shell 301 and the inner shell 303 are both rotatably connected to the corresponding first rotating seat 307 and the second rotating seat 304 through the limiting shaft 311, one end of the first rotating seat 307 and the second rotating seat 304 are both fixedly connected to the cross plate 305, one end of the cross plate 305 and the outer shell 301 are both fixedly connected to the second electric telescopic rod 302, the other end of the second electric telescopic rod 302 is fixedly connected to the clamping block 306, and the clamping block 30 The shape of 6 can be designed according to the components to be clamped. When the limit shaft 311 needs to be clamped, the clamp block 306 is designed to be an arc-shaped clamp block that matches the limit shaft 311. When the inner shell 303 needs to be clamped, the clamp block 306 is designed to be a plate-shaped clamp block that matches the inner shell 303. When the first positioning plate 316 and the second positioning plate 319 move along the groove of the oil pipeline, the clamp block 306 fits tightly with the limit shaft 311 and the inner shell 303 to ensure that the outer shell 301 and the inner shell 303 do not shake, thereby ensuring the stability of the first positioning plate 316 and the second positioning plate 319 when working. When the outer shell 301 and the inner shell 303 rotate around the first rotating seat 307 and the second rotating seat 304 respectively, the first positioning plate 316 and the second positioning plate 319 can also be corrected to ensure that the first positioning plate 316 and the second positioning plate 319 can fit with the groove of the oil pipeline through subsequent adjustments; One end of the connecting shell 308 is fixedly connected to the third electric telescopic rod 312, the other end of the third electric telescopic rod 312 is rotatably connected to the rotating plate 313, the other end of the rotating plate 313 is fixedly connected to the second positioning plate 319, one end of the second positioning plate 319 is rotatably connected to the first positioning plate 316, one end of the first positioning plate 316 and the second positioning plate 319 are both rotatably connected to the second screw 317, the outer side of the second screw 317 is spirally connected to the threaded cylinder 318, and one end of the rotating shaft of the rotating plate 313 is fixedly connected to the first The first screw 314 is rotatably connected to the third electric telescopic rod 312, the outer side of the first screw 314 is spirally connected with a threaded ring 315, and the threaded ring 315 is in contact with the third electric telescopic rod 312, and the position of the rotating plate 313 can be limited and fixed by the friction between the threaded ring 315 and the third electric telescopic rod 312, and the third electric telescopic rod 312 can adjust the position of the first positioning plate 316 and the second positioning plate 319 through the rotating plate 313, and the rotating plate 313 and the third electric telescopic rod 312 are connected to each other. When the telescopic rod 312 rotates, the positions of the first positioning plate 316 and the second positioning plate 319 can be corrected, so that the first positioning plate 316 and the second positioning plate 319 can be placed on the inner side of the adjacent oil pipeline groove, so that the first positioning plate 316 and the second positioning plate 319 are respectively fitted with the oil pipeline grooves on both sides, and the first positioning plate 316 and the second positioning plate 319 will move with the movement of the magnetic welding trolley body 4. The magnetic welding trolley body 4 is guided and positioned by the first positioning plate 316 and the second positioning plate 319 to ensure that when the adsorption force between the magnetic welding trolley body 4 and the workpiece surface is uneven, the magnetic welding trolley body 4 will not deviate, thereby improving the quality of welding; and the threads on the surfaces of the second screws 317 on both sides of the threaded barrel 318 are arranged in opposite directions, ensuring that when the threaded barrel 318 rotates, the second screws 317 on both sides can move in opposite directions, so that the angle between the first positioning plate 316 and the second positioning plate 319 is adjusted accordingly with the change in the angle of the oil pipeline groove.

[0043] As a further improvement of the present invention, Fig.12As shown, the temporary fixing assembly includes a fifth electric telescopic rod 310 fixedly connected to the connecting shell 308, and the other end of the fifth electric telescopic rod 310 is fixedly connected to the electromagnet 309, and the electromagnet 309 is slidably connected to the connecting shell 308. When a circle of the oil pipeline groove is about to be welded, that is, the cleaning plate 113 moves to the initial position of welding, the fifth electric telescopic rod 310 brings the electromagnet 309 and is magnetically attracted to the surface of the oil pipeline to achieve the limit fixation of the connecting shell 308, thereby achieving the limit fixation of the third electric telescopic rod 312, the rotating plate 313, the first positioning plate 316 and the second positioning plate 319 through the connecting shell 308, ensuring the first electric telescopic rod 312, the rotating plate 313, the first positioning plate 316 and the second positioning plate 319. The first positioning plate 316 and the second positioning plate 319 are used to guide and limit the main body 4 of the magnetic welding trolley normally; when the electromagnet 309 is magnetically attracted to the oil pipeline, the second electric telescopic rod 302 is separated from the limit shaft 311 and the inner shell 303 with the clamping block 306, so that the inner shell 303 and the outer shell 301 can move freely, and at the same time, the second motor 118 rotates the connecting frame 102 upward, and then the connecting frame 102 is lifted upward with the cleaning plate 113 and the bristles 114 through the first electric telescopic rod 103, the rotating shaft 108, the first moving cylinder 110 and the connecting ring 112, so that the cleaning plate 113 and the bristles 114 are no longer attached to the groove of the oil pipeline When the welding head 11 is welded to the position of the first positioning plate 316 and the second positioning plate 319, the second electric telescopic rod 302 will again bring the clamping block 306 and the limiting block 319 to the outer shell 301 and the inner shell 303 through the fixing plate 101, the connecting frame 102 and the first rotating seat 307 to move relative to each other, thereby ensuring the normal movement of the magnetic welding trolley body 4 along the oil pipeline. At this time, the first positioning plate 316 and the second positioning plate 319 continue to guide and limit the magnetic welding trolley body 4 normally; when the welding head 11 is about to be welded to the position of the first positioning plate 316 and the second positioning plate 319, the second electric telescopic rod 302 will again bring the clamping block 306 and the limiting block 319 to the outer shell 301 and the inner shell 303 to move relative to each other through the fixing plate 101, the connecting frame 102 and the first rotating seat 307 to move relative to each other, thereby ensuring the normal movement of the magnetic welding trolley body 4 along the oil pipeline. The shaft 311 and the inner shell 303 fit tightly together to ensure that the outer shell 301 and the inner shell 303 do not shake, and then the second motor 118 rotates the connecting frame 102 upward, and then the connecting frame 102 lifts up the first positioning plate 316 and the second positioning plate 319 through the outer shell 301, the inner shell 303, the third electric telescopic rod 312 and the rotating plate 313, so that the first positioning plate 316 and the second positioning plate 319 are separated from the groove of the oil pipeline, ensuring that the first positioning plate 316 and the second positioning plate 319 will not affect the normal welding of the welding head 11, thereby ensuring that the welding head 11 can weld the annular seam of the oil pipeline.

[0044] As a further improvement of the present invention, Figure 1As shown, one end of the cleaning mechanism 1 is fixedly connected to a hot air blower 9, the outlet end of the hot air blower 9 is connected to an air outlet shell 10 through a connecting pipe, and the air outlet shell 10 is fixedly connected to the cleaning mechanism 1, the air outlet shell 10 is hollow, and the bottom of the air outlet shell 10 is provided with an air outlet facing the bevel of the oil pipeline. After cleaning by the cleaning plate 113 and the brush 114, the hot air blower 9 blows hot air to the cleaned area through the air outlet shell 10, and the cleaned area is quickly dried by the hot air to ensure that the normal welding of the welding head 11 is not affected.

[0045] Working process: after the main body 4 of the magnetic welding trolley is placed on the outside of the oil pipeline, the second motor 118 drives the connecting frame 102 to rotate relative to the fixed plate 101, and then the connecting frame 102 drives the cleaning plate 113 to rotate relative to the fixed plate 101 through the first electric telescopic rod 103, the first bearing 109, the rotating shaft 108, and the first adjusting component, so that the cleaning plate 113 with the bristles 114 can fit together with the groove of the oil pipeline, ensuring that the cleaning plate 113 can drive the bristles 114 to clean the oil pipeline groove surface oil stains and foreign matter, and the first motor 107 can drive the cleaning plate 113 and the bristles 114 to rotate relative to the groove of the oil pipeline through the rotating shaft 108 and the first adjusting component, and the first motor 107 drives the rotating shaft 108 to rotate counterclockwise, through the cleaning The rotation of the plate 113 and the bristles 114 can realize the cleaning of oil stains and foreign objects, and the water pump 117 can spray the cleaning liquid inside the liquid storage tank 116 to the surface of oil stains and foreign objects on the groove of the oil pipeline through the water spray barrel 115, so that the oil stains and foreign objects are easier to clean, thereby completely cleaning the oil stains on the groove of the oil pipeline, ensuring that no oil stains adhere to the groove of the oil pipeline, thereby improving the quality of welding, and the cleaning plate 113 will also move with the movement of the magnetic welding trolley body 4, so that the cleaning plate 113 carries the bristles 114 to clean the surroundings of the groove of the oil pipeline. At the same time, after cleaning with the cleaning plate 113 and the bristles 114, the hot air blower 9 blows hot air to the cleaned area through the air outlet shell 10, and the cleaned area is quickly dried by the hot air, ensuring that the normal welding of the welding head 11 will not be affected; When the inclination angle of the oil pipeline groove of different production batches changes, the first moving cylinder 110 on both sides of the vertical center line of the rotating shaft 108 is adjusted to make the first moving cylinder 110 move along the surface of the rotating shaft 108, and at the same time, the first moving cylinder 110 will also move with the connecting ring 112, so that the connecting ring 112 and the cleaning plate 113 rotate relative to each other, so that the inclination angle of the cleaning plate 113 changes, until the inclination angle of the cleaning plate 113 meets the inclination angle of the oil pipeline groove, ensuring that the bristles 114 are in close contact with the oil pipeline groove, improving the cleaning effect, and at the same time improving the applicability of the device to meet the use requirements of different batches of oil pipeline grooves. The first locking screw 111 is used to realize the mutual fixation between the rotating shaft 108 and the first moving cylinder 110. When the rotating shaft 108 rotates, the rotating shaft 108 will rotate with the second moving cylinder 201 through the first moving cylinder 110, and then the second moving cylinder 201 will rotate with the bevel gear ring 203, and then the bevel gear ring 203 will rotate with the sleeve 209, the roller 211 and the lever 212 through the bevel gear 204 and the universal joint 208 toward the direction of the bristles 114, so that the lever 212 moves the bristles 114, and the oil and foreign matter on the surface of the bristles 114 are removed under the movement of the lever 212, so as to ensure that the bristles 114 are always in a clean state, thereby further improving The bristles 114 have a cleaning effect; when the inclination angle of the cleaning plate 113 changes and the position of the roller 211 needs to be adjusted accordingly, the second movable cylinder 201 is rotated around the vertical center line of the support shaft 214 with the roller 211 and the connecting plate 213 through the second bearing 205, the L-shaped plate 206, the third bearing 207, the universal joint 208 and the sleeve 209, so that the roller 211 and the adjacent cleaning plate 113 are in a parallel state; at the same time, the degree range of the oil pipeline groove is generally 30 degrees to 45 degrees, that is, the cleaning plate 113 will also be adjusted accordingly within the range of 30 degrees-45 degrees, and the roller 211 will also rotate with the cleaning plate 113 at 30 degrees-45 degrees The length of the lever 212 can be designed according to actual needs, so that when the cleaning plate 113 and the roller 211 are adjusted within the range of 30 degrees to 45 degrees, the lever 212 can always be in contact with the bristles 114, so that the lever 212 can always realize the cleaning of the bristles 114; the support column 215 will also move with the movement of the L-shaped plate 206. When the roller 211 is adjusted to a suitable position, the support column 215 and the guide rail 217 are fixed together by the fourth locking screw 216. Under the fixed support of the support column 215, the stability of the L-shaped plate 206, the bevel gear 204 and the roller 211 during operation can be improved; When the first positioning plate 316 and the second positioning plate 319 move along the groove of the oil pipeline, the clamping block 306 fits tightly with the limiting shaft 311 and the inner shell 303 to ensure that the outer shell 301 and the inner shell 303 do not shake, thereby ensuring the stability of the first positioning plate 316 and the second positioning plate 319 during operation, and when the outer shell 301 and the inner shell 303 rotate around the first rotating seat 307 and the second rotating seat 304 respectively, the first positioning plate 316 and the second positioning plate 319 can also be corrected to ensure that the first positioning plate 316 and the second positioning plate 319 can fit together with the groove of the oil pipeline through subsequent adjustments; the position of the rotating plate 313 can be limited and fixed by the friction between the threaded ring 315 and the third electric telescopic rod 312, and the third electric telescopic rod 312 can adjust the positions of the first positioning plate 316 and the second positioning plate 319 through the rotating plate 313, and when the rotating plate 313 and the third electric telescopic rod 312 rotate , the positions of the first positioning plate 316 and the second positioning plate 319 can be corrected, so that the first positioning plate 316 and the second positioning plate 319 can be placed on the inner side of the adjacent oil pipeline groove, so that the first positioning plate 316 and the second positioning plate 319 are respectively fitted with the oil pipeline grooves on both sides, and the first positioning plate 316 and the second positioning plate 319 will move with the movement of the magnetic welding trolley body 4, and the magnetic welding trolley body 4 is guided and positioned by the first positioning plate 316 and the second positioning plate 319 to ensure that when the adsorption force between the magnetic welding trolley body 4 and the workpiece surface is uneven, the magnetic welding trolley body 4 will not deviate, thereby improving the quality of welding; and the threads on the surfaces of the second screws 317 on both sides of the threaded barrel 318 are arranged in opposite directions, ensuring that when the threaded barrel 318 rotates, the second screws 317 on both sides can move in opposite directions, so that the angle between the first positioning plate 316 and the second positioning plate 319 is adjusted accordingly with the change of the angle of the oil pipeline groove; When a circle of the oil pipeline groove is about to be welded, that is, the cleaning plate 113 moves to the initial position of welding, at this time, the fifth electric telescopic rod 310 with the electromagnet 309 is magnetically attracted to the surface of the oil pipeline to achieve the limit fixation of the connecting shell 308, thereby achieving the limit fixation of the third electric telescopic rod 312, the rotating plate 313, the first positioning plate 316 and the second positioning plate 319 through the connecting shell 308, ensuring the normal guiding limit of the first positioning plate 316 and the second positioning plate 319 to the magnetic welding trolley body 4; when the electromagnet 309 is magnetically attracted to the oil pipeline, at this time, the second electric telescopic rod 310 is magnetically attracted to the surface of the oil pipeline to achieve the limit fixation of the connecting shell 308, thereby achieving the limit fixation of the third electric telescopic rod 312, the rotating plate 313, the first positioning plate 316 and the second positioning plate 319 through the connecting shell 308, ensuring the normal guiding limit of the first positioning plate 316 and the second positioning plate 319 to the magnetic welding trolley body 4; The movable telescopic rod 302 brings the clamping block 306 to separate from the limit shaft 311 and the inner shell 303, so that the inner shell 303 and the outer shell 301 can move freely. At the same time, the second motor 118 brings the connecting frame 102 to rotate upward, and then the connecting frame 102 is lifted upward with the cleaning plate 113 and the brush 114 through the first electric telescopic rod 103, the rotating shaft 108, the first moving cylinder 110 and the connecting ring 112, so that the cleaning plate 113 and the brush 114 are no longer attached to the groove of the oil pipeline, ensuring the normal welding of the welding head 11. At this time, the main body 4 of the magnetic welding trolley continues to move with the welding head 11 During dynamic welding, the main body 4 of the magnetic welding trolley will move relative to the outer shell 301 and the inner shell 303 through the fixing plate 101, the connecting frame 102 and the first rotating seat 307, so as to ensure the normal movement of the main body 4 of the magnetic welding trolley along the oil pipeline. At this time, the first positioning plate 316 and the second positioning plate 319 continue to guide and limit the main body 4 of the magnetic welding trolley normally; when the welding head 11 is about to be welded to the position of the first positioning plate 316 and the second positioning plate 319, the second electric telescopic rod 302 again brings the clamping block 306 to fit tightly with the limiting shaft 311 and the inner shell 303 , ensuring that the outer shell 301 and the inner shell 303 do not shake, then the second motor 118 rotates the connecting frame 102 upward, and then the connecting frame 102 lifts the first positioning plate 316 and the second positioning plate 319 upward through the outer shell 301, the inner shell 303, the third electric telescopic rod 312 and the rotating plate 313, so that the first positioning plate 316 and the second positioning plate 319 are separated from the groove of the oil pipeline, ensuring that the first positioning plate 316 and the second positioning plate 319 will not affect the normal welding of the welding head 11, thereby ensuring that the welding head 11 can weld the annular seam of the oil pipeline.

[0046] The above is a preferred embodiment of the present invention. The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the protection scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic welding device for annular seams of oil pipelines, comprising a magnetic welding trolley body (4) and a fourth electric telescopic rod (5), characterized in that: One end of the magnetic welding trolley body (4) is fixedly connected to a fourth electric telescopic rod (5), the other end of the fourth electric telescopic rod (5) is rotatably connected to a first fixed seat (6), a welding head (11) is placed inside the first fixed seat (6), one end of the first fixed seat (6) is fixedly connected to a second fixed seat (7), a wire feeding head (8) is placed inside the second fixed seat (7), one end of the magnetic welding trolley body (4) is fixedly connected to a cleaning mechanism (1), one end of the cleaning mechanism (1) is provided with a self-cleaning mechanism (2), one side of the welding head (11) is provided with a positioning mechanism (3), and the positioning mechanism (3) is fixedly connected to the cleaning mechanism (1), the cleaning mechanism (1) comprises a cleaning plate (113), and the number of the self-cleaning mechanisms (2) is two and they are symmetrically distributed on both sides of the cleaning plate (113).

2. The automatic welding device for annular seams of oil pipelines according to claim 1 is characterized in that: The cleaning mechanism (1) comprises a fixing plate (101) fixedly connected to a main body (4) of the magnetic welding trolley; one end of the fixing plate (101) is fixedly connected to a second motor (118); a main shaft end of the second motor (118) is fixedly connected to a connecting frame (102); the connecting frame (102) is rotatably connected to the fixing plate (101); the connecting frame (102) is rotatably connected to a positioning mechanism (3); the other end of the connecting frame (102) is fixedly connected to a first electric telescopic rod (103); an outer side of one end of the first electric telescopic rod (103) is fixedly connected to a connecting cover (104); the self-cleaning mechanism (2) is arranged on the inner side of the connecting cover (104); one end of the connecting cover (104) is rotatably connected to a door panel (105); the inner side of the connecting cover (104) is fixedly connected to the first electric telescopic rod (103); The motor (107) comprises a first motor (107), a main shaft end of the first motor (107) being fixedly connected to a rotating shaft (108), the other end of the rotating shaft (108) being fixedly connected to the inner side of a first bearing (109), and the inner side of the first bearing (109) being fixedly connected to a first electric telescopic rod (103), a first adjusting component being slidably connected to the outer side of the rotating shaft (108), a cleaning plate (113) being rotatably connected to one end of the first adjusting component, a brush (114) being fixedly connected to one end of the cleaning plate (113), a water spraying cylinder (115) being connected to the inner side of the top end of the connecting cover (104), the other end of the water spraying cylinder (115) being connected to a water pump (117) through a connecting pipe, the inlet end of the water pump (117) being connected to a liquid storage tank (116), and a notch (106) being provided at one end of the connecting cover (104).

3. The automatic welding device for annular seams of oil pipelines according to claim 2 is characterized in that: The first adjustment component comprises a first movable cylinder (110) slidably connected to the rotating shaft (108); the first movable cylinder (110) is slidably connected to the self-cleaning mechanism (2); there are two first movable cylinders (110) and they are symmetrically distributed on both sides of the rotating shaft (108); the outer sides of the two first movable cylinders (110) are fixedly connected to a connecting ring (112); the connecting ring (112) is rotatably connected to the cleaning plate (113); the inner sides of one end of the two first movable cylinders (110) are spirally connected to a first locking screw (111), and the first locking screw (111) is in contact with the rotating shaft (108).

4. The automatic welding device for annular seams of oil pipelines according to claim 3 is characterized in that: Four cleaning plates (113) are arranged around each connecting ring (112), and adjacent cleaning plates (113) around the same connecting ring (112) are movably arranged, and adjacent cleaning plates (113) around different connecting rings (112) are rotatably connected.

5. The automatic welding device for annular seams of oil pipelines according to claim 2 is characterized in that: The self-cleaning mechanism (2) comprises a support shaft (214) fixedly connected to the connection cover (104); the top end of the support shaft (214) is rotatably connected to a connection disk (213); one end of the connection disk (213) is rotatably connected to a roller (211); the outer side of the roller (211) is fixedly connected to a lever (212); the inner side of the roller (211) is fixedly connected to a sleeve (209); the inner side of the sleeve (209) is slidably connected to a universal joint (208); the inner side of one end of the sleeve (209) is spirally connected to a third locking screw (210), and the third locking screw (210) is fitted to the universal joint (208); the other end of the universal joint (208) is fixedly connected to a bevel gear (204); one end of the bevel gear (204) is meshed with a bevel gear ring (203); and one end of the bevel gear ring (203) is provided with a second adjustment component.

6. The automatic welding device for annular seams of oil pipelines according to claim 5 is characterized in that: The second adjustment assembly comprises a second movable cylinder (201) fixedly connected to the bevel gear ring (203), and the second movable cylinder (201) is slidably connected to the first movable cylinder (110); a second locking screw (202) is spirally connected to the inner side of one end of the second movable cylinder (201), and the second locking screw (202) is fitted with the first movable cylinder (110); a second bearing (205) is fixedly connected to the outer side of the second movable cylinder (201); one end of the second bearing (205) is fixedly connected to an L-shaped plate (206); the other end of the L-shaped plate (206) is fixedly connected to a third bearing (207), and the third bearing (207) is fixedly connected to a universal joint (208).

7. The automatic welding device for annular seams of oil pipelines according to claim 5 is characterized in that: The second adjustment assembly further comprises a support column (215) fixedly connected to the L-shaped plate (206); a guide rail (217) is slidably connected to the inner side of the bottom end of the support column (215); the guide rail (217) is fixedly connected to the connection cover (104); a fourth locking screw (216) is spirally connected to the inner side of one end of the support column (215); and one end of the fourth locking screw (216) is in contact with the guide rail (217).

8. The automatic welding device for annular seams of oil pipelines according to claim 2 is characterized in that: The positioning mechanism (3) comprises a first rotating seat (307) fixedly connected to the connecting frame (102); an outer shell (301) rotatably connected to the inner side of the first rotating seat (307); an inner shell (303) slidably connected to the inner side of the outer shell (301); a second rotating seat (304) rotatably connected to the other end of the inner shell (303); one end of the second rotating seat (304) fixedly connected to a connecting shell (308); a temporary fixing member is provided on the inner side of the connecting shell (308); The outer shell (301) and the inner shell (303) are both fixedly connected to the inner sides of one end with a limiting shaft (311), and the outer shell (301) and the inner shell (303) are both rotatably connected to the corresponding first rotating seat (307) and the second rotating seat (304) through the limiting shaft (311), and one end of the first rotating seat (307) and the second rotating seat (304) are both fixedly connected to a transverse plate (305), and one end of the transverse plate (305) and the outer shell (301) are both fixedly connected to a second electric The telescopic rod (302) is fixedly connected to a clamping block (306) at the other end of the second electric telescopic rod (302), one end of the connecting shell (308) is fixedly connected to a third electric telescopic rod (312), the other end of the third electric telescopic rod (312) is rotatably connected to a rotating plate (313), the other end of the rotating plate (313) is fixedly connected to a second positioning plate (319), one end of the second positioning plate (319) is rotatably connected to a first positioning plate (316), and the first positioning plate (316) is fixedly connected to a second positioning plate (319). 16) and one end of the second positioning plate (319) are both rotatably connected to a second screw rod (317), the outer side of the second screw rod (317) is spirally connected to a threaded barrel (318), one end of the rotating shaft of the rotating plate (313) is fixedly connected to a first screw rod (314), and the first screw rod (314) is rotatably connected to the third electric telescopic rod (312), the outer side of the first screw rod (314) is spirally connected to a threaded ring (315), and the threaded ring (315) is in close contact with the third electric telescopic rod (312).

9. The automatic annular seam welding device for oil pipeline according to claim 8, characterized in that: The temporary fixing assembly comprises a fifth electric telescopic rod (310) fixedly connected to the connection shell (308); the other end of the fifth electric telescopic rod (310) is fixedly connected to an electromagnet (309), and the electromagnet (309) is slidably connected to the connection shell (308).

10. The automatic annular seam welding device for oil pipeline according to claim 1, characterized in that: One end of the cleaning mechanism (1) is fixedly connected to a hot air blower (9), an outlet end of the hot air blower (9) is connected to an air outlet housing (10) via a connecting pipe, and the air outlet housing (10) is fixedly connected to the cleaning mechanism (1).

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