Pipe laser welding device for building construction

Abstract

The invention relates to a pipe laser welding device for building construction, and belongs to the technical field of pipe welding, the pipe laser welding device comprises a frame body assembly, a laser welding machine, a pretreatment assembly, an adjusting assembly and a pipe fixing assembly, the frame body assembly is composed of a table body with a notch formed in one side of the upper surface, and a supporting frame is installed in the table body; the laser welding machine is fixedly installed on one side of the upper surface of the table body, the pretreatment assembly is fixedly installed in the table body, the adjusting assemblies are symmetrically distributed on the two sides of the pretreatment assembly, and the pipe fixing assemblies are installed at the movable ends of the upper portions of the adjusting assemblies. According to the pipe welding device, the pipe is driven to rotate, moves up and down and left and right and drives the pipe to rotate, a grinding wheel and a polishing brush are adopted for pretreatment in the pretreatment assembly, the smoothness of the position of a welding end is improved, then the butt joint effect of the welding end face is improved in the subsequent welding process, and the welding effect is improved by enabling the pipe to rotate to form the circumferential laser welding effect in the welding process.

Description

Technical Field

[0001] This invention relates to the field of pipe welding technology, and in particular to a laser welding device for pipes used in construction. Background Technology

[0002] Pipes are materials used to make pipe fittings. Different pipe fittings require different pipe materials. They are widely used in construction, such as scaffolding, embedded pipes, and drainage pipes. All these applications require pipes to be cut or welded to specific lengths for on-site use. In applications with high sealing requirements, the quality of the weld significantly affects the performance and lifespan of the pipe. For example, in pipelines transporting water, poor welding often leads to leaks at the weld point. Currently, laser welding is widely used for pipe welding due to its ease of operation and excellent welding results. Laser welding is a fusion welding technology that uses a high-energy-density laser beam as a heat source, melting the surface through a focused laser beam. The principle of material connection is based on the generation of in-phase light waves by stimulated emission of a medium to form a high-energy laser beam. However, during welding, the alignment between the pipes, the roughness of the contact surface, and the presence of adhering substances all seriously affect the welding quality. When the two pipes are misaligned, rough, or have adhering debris, holes will appear at the welding position, resulting in defects and affecting the later use effect. Currently, some pipe laser welding devices are in use, but the degree of automation in handling the pipes is low. The pipe welding ends need to be processed multiple times before laser welding is performed. Moreover, misalignment problems are prone to occur during the welding process, which reduces the laser welding effect and makes it inconvenient to use. Summary of the Invention

[0003] To overcome the technical defects of the existing technology, the present invention provides a pipe laser welding device for construction, which facilitates the pretreatment of the pipe ends, and after the pretreatment, enables precise docking between two pipes, and the pipes rotate, thereby improving the welding effect.

[0004] The technical solution adopted in this invention is: a pipe laser welding device for construction, comprising a frame assembly, a laser welding machine, a pretreatment assembly, an adjustment assembly, and a pipe fixing assembly. The frame assembly supports the entire structure and includes a table with a notch on one side of its upper surface. The table consists of several table legs and a tabletop. A support frame is fixedly installed on the table between the table legs. The laser welding machine is fixedly installed on one side of the tabletop within the table, with the laser welding head of the laser welding machine located above the center point of the notch. The pretreatment assembly is fixedly installed inside the table, directly below the center point of the notch, and is used for grinding and polishing the ends of the pipes. The adjustment assembly is symmetrically distributed on both sides of the pretreatment assembly and is mounted on the support frame. The pipe fixing assembly is installed on the movable end above the adjustment assembly and is used to adjust the distance and height between the pipes on both sides. The pipe fixing assembly moves up and down at the notch position via the adjustment assembly, facilitating automated processing and welding of the pipes, improving work efficiency and welding quality.

[0005] Preferably, the two sides of the pretreatment component are fixedly installed on the lower side of the desktop and located at both ends of the notch. A blocking plate is fixedly installed symmetrically in the middle of the notch above the pretreatment component. The blocking plate is made of a comb-shaped elastic plastic sheet or a rubber sheet to facilitate the shielding of debris generated during polishing.

[0006] Preferably, the pretreatment component includes a U-shaped mounting bracket, with both ends of the mounting bracket fixedly connected to the desktop. A U-shaped retainer is fixedly mounted in the middle of the mounting bracket in a direction perpendicular to the notch, and a grinding wheel is rotatably mounted in the middle of the retainer. Annular polishing brushes are fixedly mounted on both sides of the grinding wheel. A drive motor is fixedly mounted at the lower end of the mounting bracket, and the drive motor drives the grinding wheel, facilitating grinding and deburring of the pipe ends.

[0007] Preferably, a driven pulley is fixedly installed on the shaft end of the grinding wheel on one side of the retainer, and a drive pulley is fixedly installed on the output end of the drive motor. A connecting belt is sleeved between the drive pulley and the driven pulley to facilitate driving the grinding wheel and processing the end of the pipe.

[0008] Preferably, the adjusting component includes a fixing plate, which is fixedly mounted on the support frame and symmetrically distributed on the support frame with respect to the pretreatment components. An adjusting cylinder is fixedly mounted on the fixing plate, and a lifting frame is fixedly mounted on the output end of the adjusting cylinder. Horizontal electric slide rails are installed parallel to each other on both sides of the lifting frame. A bidirectional electric slide rail is fixedly mounted between the movable ends of the two horizontal electric slide rails, perpendicular to the horizontal electric slide rails. The pipe fixing component is mounted on the two movable ends of the bidirectional electric slide rails, facilitating the adjustment of the position of the pipe fixing component.

[0009] Preferably, the fixed plate has a guide hole, and the lifting frame is fixedly installed with a T-shaped guide rod. The guide rod is inserted into the guide hole. There are two bidirectional electric slide rails, and a connecting frame is fixedly installed between the two bidirectional electric slide rails to improve the stability of the lifting frame during lifting.

[0010] Preferably, the pipe fixing assembly includes two symmetrical mounting plates. A mounting base is fixedly installed at the lower end of the mounting plate. The mounting base is fixedly connected to the movable end of the bidirectional electric slide rail. One side of the mounting plate has an arc-shaped structure. A rotating ring is slidably engaged on the inner side of the arc-shaped structure on the mounting plate. An electric telescopic rod is fixedly installed in the middle of the rotating ring. An arc-shaped clamping plate is fixedly installed at the telescopic end of the electric telescopic rod, which facilitates clamping and fixing of the pipe and allows the pipe to move with the movement of the pipe fixing assembly and rotate with the rotation of the rotating ring.

[0011] Preferably, a T-shaped slide bar is fixedly installed inside the arc-shaped structure on the mounting plate, and a slide bracket that matches the slide bar is fixedly installed on the outer side of the rotating ring. The slide bracket is slidably engaged with the slide bar. Both rotating rings are semi-arc structures and are combined to form a circular ring structure. Teeth are fixedly installed on the outer side of one end of the rotating ring, and a servo motor is fixedly installed on one side of the mounting plate. A gear is fixedly installed on the output end of the servo motor. The gear meshes with the teeth to facilitate the rotation of the rotating ring, thereby rotating the pipe.

[0012] Preferably, telescopic sleeves are fixedly installed inside the rotating ring on both the upper and lower sides of the electric telescopic rod, and one end of the telescopic sleeve is fixedly connected to one side of the clamping plate.

[0013] Preferably, a power supply control box with energy storage function is fixedly installed at one outer end of the rotating ring. The power supply control box is electrically connected to the electric telescopic rod, which facilitates the power supply and control of the electric telescopic rod without the need for an external power source, thus avoiding affecting the rotation of the rotating ring.

[0014] The beneficial effects of this invention are as follows: By using a pipe fixing assembly, the pipes to be welded are fixed and moved up and down, left and right, and rotated. When passing through the pre-treatment assembly, the burrs are polished by a grinding wheel and a polishing brush in sequence, improving the smoothness of the welding end position. This improves the butt joint effect of the welding end face during subsequent welding. The distance between the pipes is adjusted by a transverse electric slide rail, and the height of the pipes is adjusted by an adjusting cylinder, achieving a precise butt joint effect between the pipes on both sides. During welding, a servo motor drives the rotating ring to rotate, causing the pipe to rotate and forming a circumferential laser welding effect, improving the uniformity of welding. In use, the degree of automation is high, and no manual intervention is required in the pre-treatment and welding processes, improving welding efficiency and welding effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure during welding according to the present invention;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention without the insertion of the tubing;

[0017] Figure 3 This is a schematic diagram of the pipe pretreatment process according to the present invention;

[0018] Figure 4 This is a schematic diagram of the frame assembly in this invention;

[0019] Figure 5 This is a schematic diagram of the pre-processing component in this invention;

[0020] Figure 6 This is a schematic diagram of the structure of the adjustment component in this invention;

[0021] Figure 7 This is a partial structural diagram of the adjustment component in this invention;

[0022] Figure 8 This is a schematic diagram of the pipe fixing assembly in this invention;

[0023] Figure 9 This is a schematic diagram of the structure of the pipe fixing assembly after an explosion in this invention;

[0024] Figure 10 This is a schematic diagram of the pipe fixing assembly after an explosion, taken from another angle.

[0025] Explanation of reference numerals in the attached figures: 1. Frame assembly; 101. Notch; 102. Table body; 103. Support frame; 104. Blocking plate; 2. Laser welding machine; 3. Pre-treatment assembly; 301. Mounting bracket; 302. Retainer; 303. Grinding wheel; 304. Polishing brush; 305. Drive motor; 306. Driven pulley; 307. Drive pulley; 308. Connecting belt; 4. Adjustment assembly; 401. Fixing plate; 402. Adjusting cylinder; 40 3. Lifting frame; 404. Horizontal electric slide rail; 405. Bidirectional electric slide rail; 406. Guide hole; 407. Guide rod; 408. Connecting frame; 5. Pipe fixing assembly; 501. Mounting plate; 502. Mounting base; 503. Rotary ring; 504. Electric telescopic rod; 505. Clamping plate; 506. Slide bar; 507. Slide carriage; 508. Gear; 509. Servo motor; 5010. Gear; 5011. Telescopic sleeve; 5012. Power supply control box. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figures 1-10As shown, this embodiment provides a pipe laser welding device for construction, including a frame assembly 1, a laser welding machine 2, a pretreatment assembly 3, an adjustment assembly 4, a pipe fixing assembly 5, and the frame assembly 1. The frame assembly 1 is used to support the entire structure, and includes a table 102 with a notch 101 on one side of its upper surface. When the adjustment assembly 4 moves the pipe fixing assembly 5 up and down, the upper end of the adjustment assembly 4 and the pipe fixing assembly 5 are adjusted along the notch 101 at the upper and lower ends of the table 102. The table 102 is composed of several table legs and a tabletop. A support frame 103 is fixedly installed on the table body 102 between the table legs to facilitate the fixation of the adjustment component 4. The laser welding machine 2 is fixedly installed on one side of the upper surface of the tabletop in the table body 102, and the laser welding head of the laser welding machine 2 is located above the center point of the notch 101. When the two pipes are fixed and aligned by the pipe fixing components 5 on both sides, the alignment position is located at the laser welding head position, which facilitates welding at the pipe joint. The pretreatment component 3 is fixedly installed inside the table body 102, located directly below the center point of the notch 101, and is used for grinding and polishing the ends of the pipes. The light source facilitates pre-treatment of the pipe ends, grinding them to a vertically flat surface. Polishing is then performed to remove debris, dirt, and burrs generated during grinding, improving the cleanliness of the ends and thus enhancing the stability and quality of subsequent welding. Adjustment components 4 are symmetrically distributed on both sides of the pre-treatment component 3 and mounted on the support frame 103, allowing for position adjustment of the two pipes on either side. Pipe fixing components 5 are installed on the movable end above the adjustment components 4, used to adjust the position of the pipes on both sides. The distance and height between the pipes are adjusted, and the pipe fixing component 5 moves up and down at the notch 101 position through the adjusting component 4. In use, the two pipes are clamped and fixed in the pipe fixing components 5 on both sides and kept stable. When the adjusting component 4 moves the pipe fixing component 5, the pipes move and are rotated through the pipe fixing component 5, which improves the processing effect during pretreatment and the uniformity during welding. During welding, the laser welding head of the laser welding machine 2 remains stationary, while the pipes being welded rotate synchronously and slowly, forming a circumferential laser welding effect.

[0028] As a technical optimization solution of the present invention, specifically as follows: Figure 4As shown, the two sides of the pretreatment component 3 are fixedly installed on the lower side of the desktop and located at both ends of the notch 101. The middle position of the notch 101 is located above the pretreatment component 3 and is symmetrically fixedly installed with a baffle plate 104. The baffle plate 104 is made of a comb-shaped elastic plastic sheet or a rubber sheet. When the adjusting component 4 drives the tube fixing component 5 to move up and down, the tube moves up and down. During the movement, the end of the tube contacts the baffle plate 104, causing the baffle plate 104 to deform. The middle position of the baffle plate 104 is in a broken state, which facilitates the tube to pass through the baffle plate 104 and adjust its position between the top and bottom of the desktop. During pretreatment and welding, the baffle plate 104 prevents the debris from splashing upwards during grinding or polishing and the debris from falling downwards during welding, thus providing auxiliary protection.

[0029] As a technical optimization solution of the present invention, specifically as follows: Figure 5 As shown, the pretreatment component 3 includes a U-shaped mounting bracket 301. Both ends of the mounting bracket 301 are fixedly connected to the desktop. A U-shaped retainer 302 is fixedly mounted in the middle of the mounting bracket 301, perpendicular to the notch 101, to facilitate the fixation of the pretreatment component 3. A grinding wheel 303 is rotatably mounted in the middle of the retainer 302. When the tube contacts the surface of the grinding wheel 303, the high-speed rotation of the grinding wheel 303 achieves the effect of grinding the end of the tube. During grinding, the tube itself rotates slowly, which helps improve the uniformity of the end face during grinding and allows for precise docking between the two tubes after grinding. Annular polishing brushes 304 are fixedly mounted on both sides of the grinding wheel 303. After the tube is ground, the distance between the two tubes increases, and the brushes continue to move downwards, allowing the tubes to dock precisely with the surface of the tube. When the polishing brush 304 contacts the grinding wheel 303, the polishing brush 304 continues to rotate, and the pipe itself also rotates, which facilitates the polishing of the end face, effectively removing foreign objects and burrs attached to the end face, and improving the welding quality during subsequent welding. The lower end of the mounting bracket 301 is fixedly mounted with a drive motor 305, which drives the grinding wheel 303. The shaft end of the grinding wheel 303 is fixedly mounted with a driven pulley 306 on one side of the retainer 302. The output end of the drive motor 305 is fixedly mounted with a drive pulley 307. A connecting belt 308 is sleeved between the drive pulley 307 and the driven pulley 306. During pretreatment, the drive motor 305 drives the drive pulley 307 to rotate, and through the connecting belt 308, the driven pulley 306 rotates, thereby achieving the effect of driving the grinding wheel 303.

[0030] As a technical optimization solution of the present invention, specifically as follows: Figure 6 and Figure 7As shown, the adjustment component 4 includes a fixing plate 401, which is fixedly mounted on the support frame 103. The fixing plates 401 are symmetrically distributed on the support frame 103 as the pre-treatment component 3, facilitating the adjustment of the pipes on both sides. An adjustment cylinder 402 is fixedly mounted on the fixing plate 401, and a lifting frame 403 is fixedly mounted on the output end of the adjustment cylinder 402. The height of the lifting frame 403 is adjusted by adjusting the cylinder 402, thereby adjusting the height of the pipe fixing component 5, facilitating the adjustment of the pipe position. Horizontal electric slide rails 404 are installed parallel to each other on both sides of the lifting frame 403. The horizontal electric slide rails 404 are linear electric slide rails, and the two horizontal electric slide rails 404 operate synchronously. A bidirectional electric slide rail 405 is fixedly mounted between the movable ends of the two horizontal electric slide rails 404 in a state perpendicular to the horizontal electric slide rails 404. The horizontal electric slide rail 404 facilitates the adjustment of the position of the bidirectional electric slide rail 405, thereby achieving the effect of adjusting the distance between the pipes. The bidirectional electric slide rail 405 adopts a bidirectional ball screw module slide with positive and negative threads. The pipe fixing component 5 is installed on the two movable ends of the bidirectional electric slide rail 405. When the bidirectional electric slide rail 405 is started, the two movable ends move in opposite directions. The fixed plate 401 has a guide hole 406, and the lifting frame 403 is fixedly installed with a T-shaped guide rod 407. The guide rod 407 is inserted into the guide hole 406, which improves the stability of the lifting frame 403 when lifting and lowering, and facilitates the stable adjustment of the height of the pipe fixing component 5. There are two bidirectional electric slide rails 405, and a connecting frame 408 is fixedly installed between the two bidirectional electric slide rails 405 to improve the stability of the distance between the bidirectional electric slide rails 405.

[0031] As a technical optimization solution of the present invention, specifically as follows: Figure 8-10As shown, the pipe fixing assembly 5 includes two symmetrical mounting plates 501. A mounting base 502 is fixedly mounted on the lower end of each mounting plate 501. The mounting base 502 is fixedly connected to the movable end of a bidirectional electric slide rail 405, facilitating movement of the mounting plates 501 via the bidirectional electric slide rail 405, thus adjusting the distance between the mounting plates 501. One side of each mounting plate 501 has an arc-shaped structure. A rotating ring 503 is slidably engaged on the inner side of the arc-shaped structure of each mounting plate 501. When the two mounting plates 501 contact each other, the two rotating rings 503 contact each other, forming a circular structure that facilitates the rotation of the pipe. An electric telescopic rod 504 is fixedly installed in the middle of the interior of the mounting plate 501. An arc-shaped clamping plate 505 is fixedly installed at the telescopic end of the electric telescopic rod 504. When the pipe is placed between the two clamping plates 505, the electric telescopic rod 504 is activated, causing it to push the clamping plates 505 to move, thereby clamping the pipe between the clamping plates 505 and fixing it in place. A T-shaped sliding strip 506 is fixedly installed inside the arc-shaped structure of the mounting plate 501. A slide bracket 507 that matches the sliding strip 506 is fixedly installed on the outer side of the rotating ring 503. The slide bracket 507 slides and engages with the sliding strip 506. Both rotating rings 503 are semi-arc-shaped. The components are arranged to form a circular structure. When the rotating ring 503 rotates, it facilitates the rotation of the rotating ring 503 via the slide 507 and slide bar 506, providing a guiding effect for the rotating ring 503. A tooth 508 is fixedly installed on the outside of one end of the rotating ring 503, and a servo motor 509 is fixedly installed on the mounting plate 501 on one side. A gear 5010 is fixedly installed on the output end of the servo motor 509. The gear 5010 meshes with the tooth 508. When the pipe needs to be rotated, the servo motor 509 drives the gear 5010 to rotate, so that the gear 5010 drives the tooth 508, facilitating the rotation of the rotating ring 503 on the mounting plate 501. The rotating mechanism facilitates pipe driving. Inside the rotating ring 503, telescopic sleeves 5011 are fixedly installed on both the upper and lower sides of the electric telescopic rod 504. One end of the telescopic sleeve 5011 is fixedly connected to one side of the clamping plate 505, improving the load-bearing capacity of the clamping plate 505 and facilitating its movement. A power supply control box 5012 with energy storage function is fixedly installed on one end of the outer side of the rotating ring 503. The power supply control box 5012 is electrically connected to the electric telescopic rod 504, eliminating the need for an external power source for the electric telescopic rod 504. This facilitates power supply and control of the electric telescopic rod 504, preventing external cables from affecting the pipe's rotation and simplifying its use.

[0032] The foregoing has shown and described the basic principles, main features and advantages of this invention. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from the spirit and scope of this invention. All such changes and modifications fall within the scope of this invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A laser welding device for pipes used in construction, characterized in that, include: The frame assembly (1) is used to support the whole, and the frame assembly (1) includes a table body (102) with a notch (101) on one side of the upper surface. The table body (102) is composed of several table legs and a tabletop. A support frame (103) is fixedly installed on the table body (102) between the table legs. A laser welding machine (2) is fixedly installed on one side of the upper surface of the tabletop in the table body (102), and the laser welding head of the laser welding machine (2) is located above the center point of the notch (101); The pre-processing component (3) is fixedly installed inside the table body (102) and located directly below the center point of the notch (101) for grinding and polishing the end of the pipe. Adjustment components (4) are symmetrically distributed on both sides of the pretreatment component (3) and are mounted on the support frame (103); Pipe fixing assembly (5) is installed on the upper movable end of the adjusting assembly (4) for adjusting the distance and height between the pipes on both sides, and the pipe fixing assembly (5) moves up and down at the notch (101) position through the adjusting assembly (4).

2. The pipe laser welding device for construction as described in claim 1, characterized in that: The two sides of the pretreatment component (3) are fixedly installed on the lower side of the desktop and located at both ends of the notch (101). The middle position of the notch (101) is located above the pretreatment component (3) and a blocking plate (104) is fixedly installed symmetrically from front to back. The blocking plate (104) is made of one of the elastic plastic sheet or rubber sheet with a comb-shaped structure.

3. The pipe laser welding device for construction as described in claim 1, characterized in that: The pretreatment component (3) includes a U-shaped mounting bracket (301), with both ends of the mounting bracket (301) fixedly connected to the desktop. A U-shaped retainer (302) is fixedly mounted in the middle of the mounting bracket (301) in a direction perpendicular to the notch (101). A grinding wheel (303) is rotatably mounted in the middle of the retainer (302). A ring-shaped polishing brush (304) is fixedly mounted on both sides of the grinding wheel (303). A drive motor (305) is fixedly mounted at the lower end of the mounting bracket (301), and the drive motor (305) drives the grinding wheel (303).

4. The pipe laser welding device for construction as described in claim 3, characterized in that: The driven pulley (306) is fixedly installed on the shaft end of the grinding wheel (303) on one side of the retainer (302), and the drive pulley (307) is fixedly installed on the output end of the drive motor (305). A connecting belt (308) is sleeved between the drive pulley (307) and the driven pulley (306).

5. The pipe laser welding device for construction as described in claim 1, characterized in that: The adjustment component (4) includes a fixing plate (401), which is fixedly installed on the support frame (103). The fixing plate (401) is symmetrically distributed on the support frame (103) as the pretreatment component (3). An adjustment cylinder (402) is fixedly installed on the fixing plate (401). A lifting frame (403) is fixedly installed at the output end of the adjustment cylinder (402). A transverse electric slide rail (404) is installed on both sides of the lifting frame (403) in a parallel state. A bidirectional electric slide rail (405) is fixedly installed between the movable ends of the two transverse electric slide rails (404) in a state perpendicular to the transverse electric slide rails (404). The pipe fixing component (5) is installed on the two movable ends of the bidirectional electric slide rail (405).

6. The pipe laser welding device for construction as described in claim 5, characterized in that: The fixed plate (401) has a guide hole (406), and the lifting frame (403) is fixedly installed with a T-shaped guide rod (407). The guide rod (407) is inserted into the guide hole (406). There are two bidirectional electric slide rails (405), and a connecting frame (408) is fixedly installed between the two bidirectional electric slide rails (405).

7. The pipe laser welding device for construction as described in claim 5, characterized in that: The pipe fixing assembly (5) includes two mounting plates (501) that are symmetrical front and back. A mounting base (502) is fixedly installed at the lower end of the mounting plate (501). The mounting base (502) is fixedly connected to the movable end of the bidirectional electric slide rail (405). One side of the mounting plate (501) is an arc-shaped structure. A rotating ring (503) is slidably engaged on the inner side of the arc-shaped structure on the mounting plate (501). An electric telescopic rod (504) is fixedly installed in the middle of the inner side of the rotating ring (503). An arc-shaped clamping plate (505) is fixedly installed at the telescopic end of the electric telescopic rod (504).

8. The pipe laser welding device for construction as described in claim 7, characterized in that: A T-shaped slide bar (506) is fixedly installed inside the arc-shaped structure on the mounting plate (501). A slide bracket (507) that matches the slide bar (506) is fixedly installed on the outer side of the rotating ring (503). The slide bracket (507) is slidably engaged with the slide bar (506). Both rotating rings (503) are semi-arc structures and are combined to form a circular ring structure. A tooth (508) is fixedly installed on the outer side of one end of the rotating ring (503). A servo motor (509) is fixedly installed on one side of the mounting plate (501). A gear (5010) is fixedly installed on the output end of the servo motor (509). The gear (5010) meshes with the tooth (508).

9. The pipe laser welding device for construction as described in claim 7, characterized in that: The inside of the rotating ring (503) is fixedly installed with telescopic sleeves (5011) on both the upper and lower sides of the electric telescopic rod (504), and one end of the telescopic sleeve (5011) is fixedly connected to one side of the clamp (505).

10. The pipe laser welding device for construction according to claim 7, characterized in that: One end of the outer side of the rotating ring (503) is fixedly installed with a power supply control box (5012) with energy storage function, and the power supply control box (5012) is electrically connected to the electric telescopic rod (504).

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