Intelligent auxiliary positioning device for ship round pipe welding

Abstract

The application relates to the field of round pipe welding clamping technology and discloses an intelligent auxiliary positioning device for ship round pipe welding, which is used to solve the problem of deformation of the welding position of the round pipe and influence on the welding quality. The device is characterized by the following steps: center positioning of the pipe through a fixing chuck, rotating a moving ring, moving the fixing ring along a guide rod, pushing the inclined block to perform secondary clamping positioning on the pipe, thereby ensuring that the axes of the two round pipe welding ends are on the same straight line, ensuring that the end portions of the two round pipes are always parallel when the pipe rotates, thereby avoiding the deformation of the welding position of the round pipe and the influence on the welding quality when the pipe rotates, continuously rotating the moving ring after the secondary clamping positioning, moving the fixing ring and the round pipe along the guide rod until the end portion of the round pipe abuts against the positioning disc, and controlling the size of the gap between the end portions of the two round pipes, thereby facilitating the formation of a molten pool during welding and preventing the shrinkage of the weld metal during welding from being greatly constrained to cause welding stress and deformation.

Description

TECHNICAL FIELD

[0001] The application relates to the field of round pipe welding clamping technology, in particular to an intelligent auxiliary positioning device for ship round pipe welding. BACKGROUND

[0002] The ship round pipe is an indispensable component of the ship system, in order to run various systems of the ship, such as the power system, the fire fighting system, the bilge water system and the like, various media need to be transmitted through the round pipe to realize the specific functions, and in the ship manufacturing and maintenance, the welding of the ship round pipe is a key process for processing the round pipe.

[0003] In the welding of the ship round pipe, the end portions of the two round pipes need to be fixed on the auxiliary positioning device, after the round pipes are fixed, the welding device is used to weld the connecting portions of the two round pipes, after a part of the arc edge is welded, the round pipe is rotated, the above mode is repeated until the end portions of the whole round pipe are welded; as the length of the ship round pipe is relatively long, only one end of the ship round pipe can be fixed on the auxiliary positioning device, under the action of the gravity of the other end of the ship round pipe, the gap above the butt joint of the two round pipes is large and the gap below the butt joint is small, when the round pipe is rotated subsequently, the welding portion of the round pipe will be deformed to some extent, thereby affecting the welding quality. SUMMARY

[0004] The application provides an intelligent auxiliary positioning device for ship round pipe welding, which has the advantages of preventing the existence of the difference between the upper and lower gaps of the welding portion of the ship round pipe, and solves the problem that the welding portion of the ship round pipe is deformed when the round pipe is rotated to affect the welding quality.

[0005] To achieve the above object, the application adopts the following technical scheme: an intelligent auxiliary positioning device for ship round pipe welding, which comprises a base, a support table and a fixed chuck, a mounting groove is formed in the fixed chuck, and the mounting groove is provided with: a spiral disc movably arranged at the middle position of the mounting groove, a spiral strip is arranged on the opposite side of the spiral disc on the two fixed chucks, and a plurality of transmission teeth are arranged in an annular array on the other side of the spiral disc; a plurality of bevel gears are arranged in an annular array on the side of the spiral disc close to the transmission teeth, the bevel gears are meshed with the transmission teeth of the spiral disc, and the two ends of the bevel gears are movably inserted into the side walls of the mounting grooves of the fixed chucks; a plurality of fixed blocks are arranged in an annular array on the side of the spiral disc close to the spiral strip, the fixed blocks are clamped on the spiral strip, and one end of the fixed blocks penetrates through the side walls of the mounting grooves of the fixed chucks and points to the axial center; a plurality of balls are embedded in the ends of the bevel gears facing the axial center of the fixed chuck; and an auxiliary fixing disc for secondary positioning of the round pipe is arranged at the top end of the support table close to one side of the middle position of the two fixed chucks.

[0006] Further, the support table at the bottom end of the auxiliary fixing disc is sequentially provided with a fixed groove and a moving groove, the auxiliary fixing disc comprises: a connecting ring, fixedly installed in the fixed groove of the support table; a moving ring, movably arranged in the moving groove of the support table, an inner wall of the moving ring is provided with an internal thread; a fixed ring, movably arranged at the shaft center of the connecting ring and the moving ring, an outer wall of the fixed ring is provided with an external thread, the external thread of the fixed ring is threadedly connected with the internal thread of the moving ring; a plurality of extrusion grooves, arranged on the inner wall of the connecting ring in an annular array; an inclined block, slidably installed in the extrusion groove, and one end penetrates the fixed ring, the side wall of the inclined block towards the extrusion groove is embedded with a permanent magnet block on the inner wall of the extrusion groove towards the inclined block; the two sides of the fixed ring are penetrated by guide rods, the guide rods are L-shaped, the guide rods comprise horizontal rods and vertical rods, the end of the horizontal rod is fixedly connected to the outer wall of the fixed chuck, and the end of the vertical rod is fixedly connected to the base.

[0007] Further, the permanent magnet block on the inclined block and the permanent magnet block on the extrusion groove generate mutual attraction magnetic force.

[0008] Further, the outer side wall of the moving ring is provided with a plurality of manual grooves.

[0009] Further, the bottom end of the extrusion groove is fixedly installed with an elastic block, the elastic block is tightly attached to the inclined surface of the inclined block, the base at the middle position of the two support tables is fixedly installed with a positioning mechanism, the positioning mechanism comprises: a gas cylinder, fixedly installed on the base at the middle position of the two support tables; a support frame, fixedly connected to the output end of the gas cylinder; a plurality of support shafts, fixedly installed on the support frame; a roller, one end movably arranged on the support shaft; a positioning disc, movably arranged among the plurality of rollers.

[0010] Further, the two ends of the roller are fixedly sleeved with limit rings.

[0011] Further, the lower side of the opposite surface of the two fixed rings is provided with a clamping groove, the roller at the lowermost end is provided with an expansion groove, the expansion groove is connected with: an expansion pipe, one end of the expansion pipe is slidably installed in the expansion groove, a plurality of spiral grooves, arranged on the inner walls of the expansion groove and each section of the expansion pipe; a plurality of guide blocks, fixedly installed on the outer side wall of each section of the expansion pipe, and slidably installed in the spiral groove; a supporting spring, fixedly connected to the end of each section of the expansion pipe; a clamping block, fixedly connected to one end of the expansion pipe towards the fixed ring; a plurality of bristles are fixedly installed on the positioning disc, a transmission groove is arranged on the outer wall of the roller, a tooth block is fixedly installed on the side wall of the positioning disc, and the tooth block on the positioning disc is engaged with the transmission groove on the roller.

[0012] Further, the clamping block is wedge-shaped, and the tip of the clamping block faces downward.

[0013] Further, the supporting spring is always in a compressed state.

[0014] This application has the following beneficial effects:

[0015] 1. The intelligent auxiliary positioning device for welding circular pipes in ships provided in this application uses a fixed chuck to center the pipe and rotates a moving ring to push the fixed ring along the crossbar of the guide rod, thereby moving the inclined block towards the center of the fixed ring to perform secondary clamping and positioning of the pipe. This ensures that the axes of the two circular pipe welding ends are on the same straight line. When the pipe welding part rotates, it ensures that the ends of the two circular pipes are always parallel, thereby avoiding deformation of the circular pipe welding joint when the circular pipe rotates, which would affect the welding quality.

[0016] 2. The intelligent auxiliary positioning device for welding circular pipes in this application involves a wedge moving towards the center of a fixed ring to perform secondary clamping and positioning of the pipe. Then, the moving ring continues to rotate, causing the fixed ring and the circular pipe to move along the guide rod until the end of the circular pipe abuts against the positioning plate. This controls the size of the gap between the ends of the two circular pipes, thereby facilitating the formation of the molten pool during welding and preventing the weld metal from being excessively constrained during welding, which could lead to welding stress and deformation.

[0017] 3. The intelligent auxiliary positioning device for welding circular tubes of ships provided in this application involves inserting a locking block into the locking groove on the fixed ring as the fixed ring moves along the guide rod, causing the fixed ring to push the telescopic tube into the drum. At the same time, the guide block on the telescopic tube slides along the spiral groove, causing the drum to rotate. The rotating drum drives the positioning disk and the brush to rotate, thereby cleaning the end of the circular tube with the brush to prevent impurities from being present at the end of the circular tube. This prevents impurities from melting into the molten metal during welding and affecting the welding strength of the circular tube. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0019] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein:

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the support platform, the fixed chuck, and the auxiliary fixed plate of the present invention;

[0022] Figure 3 This is a cross-sectional view of the support platform and fixed chuck of the present invention;

[0023] Figure 4 This is a cross-sectional view of the support platform and auxiliary fixing plate of the present invention;

[0024] Figure 5This is a schematic diagram of the positioning mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram showing the connection between the roller and the telescopic tube of the present invention.

[0026] In the diagram: 1. Base; 2. Support platform; 201. Fixed groove; 202. Moving groove; 3. Fixed chuck; 301. Spiral disc; 302. Bevel gear; 303. Fixed block; 304. Ball bearing; 4. Auxiliary fixed disc; 401. Connecting ring; 402. Moving ring; 403. Fixed ring; 404. External thread; 405. Extrusion groove; 406. Elastic block; 407. Inclined block; 408. Snap-fit ​​groove; 5. Positioning mechanism; 501. Cylinder; 502. Support frame; 503. Roller; 504. Positioning disc; 505. Telescopic tube; 506. Spiral groove; 507. Guide block; 508. Support spring; 509. Clamping block; 510. Brush bristles; 6. Guide rod. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0028] Example 1, please refer to Figures 1-3 A smart auxiliary positioning device for welding circular pipes in ships includes a base 1, a support platform 2, and a fixed chuck 3. Support platforms 2 are fixedly installed on both sides of the upper end of the base 1, and a fixed chuck 3 is fixedly installed on the upper end of the support platform 2. The fixed chuck 3 is annular, and the axes of the fixed chuck 3 on the two support platforms 2 are on the same straight line. An installation groove is provided inside the fixed chuck 3, and a spiral disk 301, a bevel gear 302, a fixing block 303, and a ball bearing 304 are provided in the installation groove. The spiral disk 301 is movably fitted in the middle of the installation groove, and the spiral disk 301 is coaxial with the fixed chuck 3. Spiral strips are provided on the opposite sides of the spiral disk 301 on the two fixed chucks 3. On the other side of 301, a number of transmission teeth are arranged in a ring array. On the side of the spiral disk 301 close to the transmission teeth, a number of bevel gears 302 arranged in a ring array are provided. The bevel gears 302 mesh with the transmission teeth on the spiral disk 301. The two ends of the bevel gears 302 are respectively movably inserted into the side wall of the mounting groove of the fixed chuck 3. On the side of the spiral disk 301 close to the spiral strip, a number of fixing blocks 303 arranged in a ring array are provided. The fixing blocks 303 are locked on the spiral strip of the spiral disk 301. One end of the fixing block 303 passes through the side wall of the mounting groove on the fixed chuck 3 and points to the axis. A ball 304 is embedded in the end of the bevel gear 302 facing the axis of the fixed chuck 3.

[0029] Please see Figure 1 , Figure 2 and Figure 4 An auxiliary fixing plate 4 for secondary positioning of the round tube is provided on the top of the support platform 2 and on one side near the middle of the two fixed chucks 3. A fixing groove 201 and a moving groove 202 are sequentially formed on the support platform 2 at the bottom of the auxiliary fixing plate 4. The auxiliary fixing plate 4 includes a connecting ring 401, a moving ring 402, a fixing ring 403, an external thread 404, a pressing groove 405, and a wedge block 407. The connecting ring 401 is fixedly installed in the fixing groove 201 of the support platform 2, and the moving ring 402 is movably disposed in the moving groove 202 of the support platform 2. The connecting ring 401 and the moving ring 402 are on the same straight line as the axis of the fixed chuck 3. The inner wall of the moving ring 402 has an internal thread. The fixing ring 403 is movably sleeved at the axis of the connecting ring 401 and the moving ring 402. The outer wall of the ring 403 is provided with an external thread 404. The external thread 404 of the fixed ring 403 is threadedly connected to the internal thread of the moving ring 402. The inner wall of the connecting ring 401 is provided with a number of extrusion grooves 405 arranged in a ring array. An inclined block 407 is slidably installed in the extrusion groove 405. One end of the inclined block 407 near the axis of the fixed ring 403 passes through the fixed ring 403, and the inclined block 407 points to the axis of the fixed ring 403. Permanent magnets are embedded on the side wall of the inclined block 407 facing the extrusion groove 405 and the inner wall of the extrusion groove 405 facing the inclined block 407. Guide rods 6 pass through both sides of the fixed ring 403. The guide rods 6 are L-shaped and include a horizontal rod and a vertical rod. The end of the horizontal rod is fixedly connected to the outer wall of the fixed chuck 3, and the end of the vertical rod is fixedly connected to the base 1.

[0030] After inserting one end of the round tube into the middle of the fixed chuck 3 and the auxiliary fixed plate 4, the bevel gear 302 is rotated by a wrench, causing the bevel gear 302 to drive the spiral plate 301 to rotate. The spiral strip on the spiral plate 301 pushes the fixed block 303 to move towards the axis, so that the ball 304 on the fixed block 303 abuts against the outer wall of the round tube, thus positioning the round tube for the first time. Then, the moving ring 402 is rotated, so that the internal thread of the moving ring 402 rotates relative to the external thread 404 of the fixed ring 403, thereby pushing the two fixed rings 403 to move relative to each other. The fixed rings 403 drive the inclined block 407 to move synchronously. The inclined surface of the inclined block 407 is squeezed by the extrusion groove 405, thereby causing the inclined block 407 to move towards the outer wall of the round tube. The inclined block 407 performs secondary clamping and positioning of the round tube, thus ensuring that the axes of the two round tube welding ends are on the same straight line. When the pipe welding part rotates, it ensures that the ends of the two round tubes are always parallel, thus avoiding deformation of the round tube welding point when the round tube rotates, which would affect the welding quality.

[0031] The permanent magnet on the inclined block 407 and the permanent magnet on the extrusion groove 405 generate a magnetic force that attracts each other; the permanent magnet on the extrusion groove 405 attracts the permanent magnet on the inclined block 407, causing the inclined block 407 to slide into the extrusion groove 405, thus resetting the inclined block 407.

[0032] Please see Figure 4 The outer wall of the moving ring 402 is provided with several manual grooves to facilitate the rotation of the moving ring 402 by construction personnel.

[0033] Please see Figure 4 An elastic block 406 is fixedly installed at the bottom end of the extrusion groove 405, and the elastic block 406 is in close contact with the inclined surface of the inclined block 407; please refer to Figure 1 and Figure 5 A positioning mechanism 5 is fixedly installed on the base 1 located between the two support platforms 2. The positioning mechanism 5 includes a cylinder 501, a support frame 502, a roller 503, and a positioning plate 504. The cylinder 501 is fixedly installed on the base 1 located between the two support platforms 2. The output end of the cylinder 501 is vertically upward, and the support frame 502 is fixedly connected to the output end of the cylinder 501. The support frame 502 is arc-shaped, and several support shafts are fixedly installed on the support frame 502. The rollers 503 are movably sleeved on the support shafts, and a movably positioned plate is located between the rollers 503. Positioning disc 504: After the round tube is positioned for the second time, the moving ring 402 continues to rotate. At this time, the inclined block 407 squeezes the elastic block 406. At the same time, the fixing ring 403 and the inclined block 407 clamp the round tube and move synchronously, so that the end of the round tube moves towards the positioning disc 504. When the ends of the round tubes on both sides abut against the positioning disc 504, the gap between the ends of the two round tubes is determined, ensuring the size of the gap between the ends of the two round tubes. This facilitates the formation of the molten pool during welding and prevents the shrinkage of the weld metal during welding from being greatly constrained, which would lead to welding stress and deformation.

[0034] Limiting rings are fixedly sleeved at both ends of the roller 503. The limiting rings are used to limit the positioning disk 504 and prevent the positioning disk 504 from slipping off the roller 503.

[0035] The working principle of Embodiment 1 of the present invention is as follows:

[0036] Please see Figures 1-5After inserting one end of the round tube into the middle of the fixed chuck 3 and the auxiliary fixed plate 4, the bevel gear 302 is rotated by a wrench, causing the bevel gear 302 to drive the spiral plate 301 to rotate. The spiral strip on the spiral plate 301 pushes the fixed block 303 to move towards the axis, so that the ball 304 on the fixed block 303 abuts against the outer wall of the round tube, thus positioning the round tube for the first time. Then, the moving ring 402 is rotated, so that the internal thread of the moving ring 402 rotates relative to the external thread 404 of the fixed ring 403, thereby pushing the two fixed rings 403 to move relative to each other. The fixed rings 403 drive the inclined block 407 to move synchronously. The inclined surface of the inclined block 407 is squeezed by the extrusion groove 405, thereby causing the inclined block 407 to move towards the outer wall of the round tube. The inclined block 407 performs secondary clamping and positioning of the round tube, thus ensuring that the axes of the two round tube welding ends are on the same straight line. When the pipe welding part rotates, it ensures that the ends of the two round tubes are always parallel, thus avoiding deformation of the round tube welding point when the round tube rotates, which affects the welding quality.

[0037] After the round tube is positioned a second time, the moving ring 402 continues to rotate. At this time, the inclined block 407 squeezes the elastic block 406. At the same time, the fixed ring 403 and the inclined block 407 clamp the round tube and move synchronously, so that the end of the round tube moves towards the positioning plate 504. When the ends of the round tubes on both sides abut against the positioning plate 504, the gap between the ends of the two round tubes is determined, ensuring the size of the gap between the ends of the two round tubes. This facilitates the formation of the molten pool during welding and prevents the shrinkage of the weld metal during welding from being greatly constrained, which would lead to welding stress and deformation.

[0038] Example 2 is a further improvement upon Example 1. Unlike Example 1, please refer to [link / reference needed]. Figure 1 and Figure 4 The two retaining rings 403 have snap-fit ​​grooves 408 on their lower sides facing each other. Please refer to [link / reference]. Figure 5 and Figure 6The lowest roller 503 has a telescopic groove, and a telescopic tube 505 is slidably installed in the telescopic groove. Several spiral grooves 506 are formed on the inner walls of the telescopic groove and each section of the telescopic tube 505. Several guide blocks 507 are fixedly installed on the outer wall of each section of the telescopic tube 505, and the guide blocks 507 are slidably installed in the spiral grooves 506. A support spring 508 is fixedly connected to the end of each section of the telescopic tube 505. A locking block 509 is fixedly connected to the end of the telescopic tube 505 facing the fixing ring 403. Several bristles 510 are fixedly installed on the positioning disc 504. A transmission groove is formed on the outer wall of the roller 503. Tooth blocks are fixedly installed on the side wall of the positioning disc 504. Engages with the transmission groove on the roller 503; as the fixed ring 403 and the inclined block 407 drive the round tube to move toward the positioning disk 504, the locking block 509 inserts into the locking groove 408. At this time, the moving fixed ring 403 squeezes the locking block 509 and the telescopic tube 505. The retracted telescopic tube 505 drives the guide block 507 to move synchronously. The guide block 507 slides along the spiral groove 506, thereby pushing the telescopic tube 505 and the roller 503 to rotate. The rotating roller 503 drives the positioning disk 504 and the brush 510 to rotate, thereby cleaning the end of the round tube with the brush 510 to prevent impurities from being present at the end of the round tube, thus preventing impurities from melting into the molten metal during welding and affecting the welding strength of the round tube.

[0039] The locking block 509 is wedge-shaped, and the tip of the locking block 509 faces downward. When the cylinder 501 drives the support frame 502 and its connecting structure to move downward, the locking block 509 can slide out from the locking groove 408 on the fixing ring 403 to prevent the locking groove 408 from jamming the locking block 509 and affecting the downward movement of the support frame 502 and its connecting structure.

[0040] The support spring 508 is always in a compressed state; the compressed support spring 508 provides support for the extension of the telescopic tube 505, ensuring that the telescopic tube 505 is in an extended state when there is no external force.

[0041] The working principle of Embodiment 2 of the present invention is as follows:

[0042] Please see Figures 1-6 As the fixed ring 403 and the inclined block 407 move the round tube toward the positioning disk 504, the locking block 509 is inserted into the locking groove 408. At this time, the moving fixed ring 403 squeezes the locking block 509 and the telescopic tube 505. The retracted telescopic tube 505 drives the guide block 507 to move synchronously. The guide block 507 slides along the spiral groove 506, thereby pushing the telescopic tube 505 and the roller 503 to rotate. The rotating roller 503 drives the positioning disk 504 and the brush 510 to rotate, thereby cleaning the end of the round tube with the brush 510 to prevent impurities from being present at the end of the round tube, thus preventing impurities from melting into the molten metal during welding and affecting the welding strength of the round tube.

Claims

1. A smart auxiliary positioning device for welding circular pipes in ships, comprising a base (1), a support platform (2), and a fixed chuck (3), characterized in that: The fixed chuck (3) has an installation slot, and the installation slot is provided with: The spiral disk (301) is movably positioned in the middle of the mounting slot. The spiral disk (301) on the two fixed chucks (3) has a spiral strip on one side facing each other, and the other side of the spiral disk (301) has a number of transmission teeth arranged in a ring array. A number of bevel gears (302) are arranged in a ring array on one side of the spiral disk (301) close to the transmission teeth. The bevel gears (302) mesh with the transmission teeth of the spiral disk (301). The two ends of the bevel gears (302) are respectively movably inserted into the side wall of the mounting groove of the fixed chuck (3). Several fixing blocks (303) are arranged in a ring array on one side of the spiral disk (301) close to the spiral strip. The fixing blocks (303) are clamped on the spiral strip. One end of the fixing block (303) passes through the side wall of the mounting groove on the fixing chuck (3) and points to the axis. A ball (304) is embedded in one end of a bevel gear (302) facing the axis of the fixed chuck (3); An auxiliary fixing plate (4) for secondary positioning of the round tube is provided on the top of the support platform (2) and on the side near the middle position of the two fixing chucks (3). The auxiliary fixing plate (4) has a fixing groove (201) and a moving groove (202) sequentially formed on the support platform (2) at the bottom end. The auxiliary fixing plate (4) includes: The connecting ring (401) is fixedly installed in the fixing groove (201) of the support platform (2); The movable ring (402) is movably disposed in the movable groove (202) of the support platform (2), and the inner wall of the movable ring (402) is provided with internal threads; A fixed ring (403) is movably sleeved at the axis of the connecting ring (401) and the moving ring (402). The outer wall of the fixed ring (403) is provided with an external thread (404), and the external thread (404) of the fixed ring (403) is threadedly connected to the internal thread of the moving ring (402). Several extrusion grooves (405) are formed on the inner wall of the connecting ring (401) and arranged in a ring array; An inclined block (407) is slidably installed in the extrusion groove (405), and one end of it passes through a fixing ring (403). Permanent magnet blocks are embedded on the side wall of the inclined block (407) facing the extrusion groove (405) and the inner wall of the extrusion groove (405) facing the inclined block (407). Guide rods (6) are passed through both sides of the fixing ring (403). The guide rods (6) are L-shaped and include a horizontal rod and a vertical rod. The end of the horizontal rod is fixedly connected to the outer wall of the fixing chuck (3), and the end of the vertical rod is fixedly connected to the base (1). An elastic block (406) is fixedly installed at the bottom end of the extrusion groove (405). The elastic block (406) is in close contact with the inclined surface of the inclined block (407). A positioning mechanism (5) is fixedly installed on the base (1) at the middle position of the two support platforms (2). The positioning mechanism (5) includes: The cylinder (501) is fixedly installed on the base (1) in the middle position of the two support platforms (2); The support frame (502) is fixedly connected to the output end of the cylinder (501); Several support shafts are fixedly installed on the support frame (502); One end of the roller (503) is movably sleeved on the support shaft; The positioning plate (504) is movably positioned between several rollers (503); The two fixing rings (403) have snap-fit ​​grooves (408) on their lower sides facing each other, and the roller (503) at the lowest end has a telescopic groove, on which the following are connected: The telescopic tube (505) is slidably installed in the telescopic groove at one end. Several spiral grooves (506) are formed on the inner wall of the expansion groove and each expansion pipe (505); Several guide blocks (507) are fixedly installed on the outer side wall of each telescopic tube (505) and slidably installed in the spiral groove (506); A support spring (508) is fixedly connected to the end of each telescopic tube (505); The locking block (509) is fixedly connected to one end of the telescopic tube (505) facing the fixing ring (403); A number of bristles (510) are fixedly installed on the positioning disk (504), a transmission groove is provided on the outer wall of the roller (503), and a toothed block is fixedly installed on the side wall of the positioning disk (504). The toothed block on the positioning disk (504) meshes with the transmission groove on the roller (503).

2. The intelligent auxiliary positioning device for welding circular tubes in ships according to claim 1, characterized in that: The permanent magnet on the inclined block (407) and the permanent magnet on the extrusion groove (405) generate a magnetic force that attracts each other.

3. The intelligent auxiliary positioning device for welding circular tubes in ships according to claim 1, characterized in that: The outer wall of the moving ring (402) is provided with several manual grooves.

4. The intelligent auxiliary positioning device for welding circular tubes in ships according to claim 1, characterized in that: Limiting rings are fixedly sleeved at both ends of the roller (503).

5. The intelligent auxiliary positioning device for welding circular tubes in ships according to claim 1, characterized in that: The card block (509) is wedge-shaped, with its tip pointing downwards.

6. The intelligent auxiliary positioning device for welding circular tubes in ships according to claim 1, characterized in that: The support spring (508) is always in a compressed state.

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