A welding positioning process for ship pipelines

Abstract

This invention belongs to the field of pipeline welding technology, specifically a positioning process for welding marine pipelines. The pipeline fixing units are symmetrically distributed around the central axis of the base and are movably mounted on the top of the base. The weld positioning unit is fixedly mounted on the top of the base. A power unit drives two support plates to move linearly along the guide trajectory of a linear slider and a linear guide rail. The movement of the support plates moves the lower and upper pipeline fixing seats and the clamped marine pipeline together until the ends of the two marine pipelines abut against the left and right sides of the positioning plates, respectively. The positioning plates create a gap the width of one positioning plate between the two marine pipelines. During welding, this prevents the weld between the two marine pipelines from being too large or too small, thus improving the strength of the weld joint.

Description

Technical Field

[0001] This invention belongs to the field of pipeline welding technology, specifically a welding positioning process for ship pipelines. Background Technology

[0002] Ship piping refers to the piping systems on a vessel, including those related to the propulsion system and the living quarters. When connecting different pipes within a ship's piping system, such as connecting pipes of different diameters or with different routes within the same system, welding is required. For example, in a fuel delivery system, welding is necessary when connecting a large-diameter pipe leading from the main fuel tank to a smaller-diameter pipe leading to the main engine to ensure smooth fuel delivery and a tight seal at the connection point.

[0003] A search revealed that Chinese patent application number 2025100466955 discloses a welding process for assembling ship pipes. This process ensures that the center of the fixed ring is always located on the axis of the ship pipe. Simultaneously, the extension length of the second hydraulic telescopic rod is adjusted so that it can contact the ship pipe. This process positions ship pipes of different sizes, enabling stable welding of the variable diameter pipe and the ship pipe after docking.

[0004] However, during the welding of ship pipelines, in order to ensure the welding strength, the gap between the two sets of pipelines should not be too large or too small. If the gap is too large, it will easily lead to incomplete welding, while if the weld is too small, the welding rod cannot be inserted between the two pipelines and can only weld the surface of the pipeline. Therefore, the strength of the welded pipeline is limited. Summary of the Invention

[0005] The purpose of this invention is to provide a welding and positioning process for ship pipelines to solve the problems mentioned in the background art.

[0006] This invention provides the following technical solution: a welding and positioning process for ship pipelines, characterized by comprising the following steps:

[0007] S1, place the two ship pipes inside the limiting grooves on the top of the left and right pipe fixing lower seats of the pipe fixing unit respectively, and ensure that the end of the pipe is in contact with the inner side of the L-shaped auxiliary mounting bracket. Then, fasten the pipe fixing upper seat on the top of the pipe fixing lower seat. The pipe fixing lower seat and the pipe fixing upper seat clamp and fix the pipe from top to bottom.

[0008] S2, the output rods of the left and right cylinders extend, pushing the two main pistons to move towards the two main oil cylinders, compressing the oil inside the main oil cylinders. Initially, under the elastic force of spring three and spring two, the main pistons will not slide along the inner wall of the main oil cylinders. The main pistons will push the main oil cylinders to move, causing the bearing plate to move linearly along the guide trajectory of the linear slider and the linear guide rail. The movement of the bearing plate will cause the lower pipe fixing seat, the upper pipe fixing seat, and the clamped ship pipe to move together. It will also cause the bearing bracket, the torsion bolt shaft, the L-shaped auxiliary mounting bracket, the rocker arm, and the sliding pin to move together, so that the sliding pin moves along the path direction of the path groove, thereby causing the rocker arm, the torsion bolt shaft, and the L-shaped auxiliary mounting bracket to rotate along the inside of the bearing bracket, so that the front and rear L-shaped auxiliary mounting brackets are moved away from the ends of the ship pipes. Then the ship pipes continue to move with the bearing plate until the ends of the left and right ship pipes abut against the left and right sides of the positioning plate, respectively.

[0009] S3, the cylinder output rod continues to extend, the main piston slides along the inner wall of the main cylinder, compressing the oil inside the main cylinder and auxiliary piston two. Since the elastic force of spring three is less than that of spring two, the oil inside the main cylinder is forced into the auxiliary piston two, pushing it and the insert rod downwards. This compresses and stores the spring three, while the insert rod moves downwards and inserts into the insertion hole. Through the insertion of the insert rod into the insertion hole, the left and right positions of the support plate and the ship's pipes are achieved. Then, the cylinder output rod continues to extend. Due to the limiting effect between the bottom of the insert rod and the bottom inner wall of the insertion hole, the insert rod... When the rod stops moving downwards, that is, when the auxiliary piston two stops moving downwards, the oil inside the main cylinder pushes the auxiliary piston one to move away from the main piston, causing the push rod and the wedge support to move together, so that the spring two is compressed and stored, and the wedge support moves and contacts the outer wall of the top wheel, thereby generating a downward wedge force on the top wheel, pushing the top wheel and the thrust plate downwards. The thrust plate drives the front and rear guide rods to slide downwards along the inside of the guide hole, thereby driving the positioning table and the positioning plate to move downwards, compressing the stored spring one, and the positioning plate moves downwards and moves away from the ends of the left and right ship pipes;

[0010] The pipe fixing units are symmetrically distributed around the central axis of the base and are movably installed on the top of the base.

[0011] A weld positioning unit is fixedly installed on the top of the base and located between two left and right pipe fixing units. The weld positioning unit is used for positioning pipe welds.

[0012] A power unit is fixedly installed at the bottom of the pipe fixing unit and is used to push the pipe fixing unit.

[0013] An auxiliary installation unit is fixedly installed at one end of the two pipe fixing units that are close to each other, and is used for positioning the two pipe fixing units.

[0014] As a preferred embodiment of the present invention, the pipe fixing unit includes:

[0015] A support plate, which is movably mounted on top of the base;

[0016] A pipe fixing lower seat is fixedly installed on the top of the bearing plate;

[0017] A pipe fixing upper seat, which is detachably mounted on top of a pipe fixing lower seat;

[0018] A groove is formed on the top of the pipe fixing seat;

[0019] The supports are fixedly installed at the top left and top right ends of the bearing plate, respectively.

[0020] The clamp is fixedly installed on the top of the support and is used to fix the pipe fixing seat.

[0021] As a preferred embodiment of the present invention, the pipe fixing unit further includes:

[0022] A linear slider is fixedly installed at the bottom left end and bottom rear end of the support plate, distributed front to back;

[0023] A linear guide rail is fixedly installed on the top of the base, with the linear slider slidably installed around the corresponding linear guide rail.

[0024] As a preferred embodiment of the present invention, the weld positioning unit includes:

[0025] A support platform, which is fixedly installed on the top of the base in a front-to-back distribution;

[0026] Guide platform, which is fixedly installed on the top of the support platform;

[0027] Guide holes, which are distributed front to back and are formed through the top of the guide platform;

[0028] Guide rod, which is slidably mounted inside the guide hole;

[0029] A positioning platform, which is fixedly installed on the top of two front and rear guide rods;

[0030] A positioning plate, which is fixedly installed on the top of the positioning platform;

[0031] Spring 1, the spring is set around the guide rod and fixedly installed between the top of the guide table and the bottom of the positioning table.

[0032] As a preferred embodiment of the present invention, the power unit includes:

[0033] A thrust plate, which is fixedly installed on the bottom of the outer wall of the front and rear guide rods;

[0034] The mounting slots are located on the left and right sides of the thrust plate;

[0035] Top wheel, which is rotatably installed inside the left and right mounting slots;

[0036] The cylinder is symmetrically arranged on the top of the base about the central axis of the base;

[0037] The main hydraulic cylinder is fixedly installed at the bottom of the support plate.

[0038] The main piston is slidably mounted on the inner wall of the main cylinder, and the output end of the cylinder is fixedly connected to the side of the main piston.

[0039] As a preferred embodiment of the present invention, the power unit further includes:

[0040] Auxiliary piston one, which is slidably mounted on the inner wall of the main oil cylinder at the end away from the cylinder;

[0041] Push rod, which is fixedly installed on the side of the auxiliary piston away from the cylinder, distributed front and rear, and moves through the inside of the main cylinder and extends to the outside of it;

[0042] A wedge force support is fixedly installed at the end of the front and rear push rods away from the auxiliary piston, and the position of the wedge force support corresponds to the position of the push wheel.

[0043] Spring 2 is sleeved around the outside of the push rod and fixedly installed between the auxiliary piston 1 and the inner wall of the main oil cylinder.

[0044] As a preferred embodiment of the present invention, the power unit further includes:

[0045] An auxiliary cylinder is fixedly installed on the lower part of the outer wall of the main cylinder, and the interior of the auxiliary cylinder is connected to the interior of the main cylinder.

[0046] Second auxiliary piston, which is slidably mounted on the inner wall of the auxiliary cylinder;

[0047] Insert rod, which is fixedly installed at the bottom of the auxiliary piston 2 and extends to the outer periphery of the bottom of the auxiliary cylinder;

[0048] Spring 3, which is sleeved around the plug rod and fixedly installed between the bottom of the auxiliary piston 2 and the inner side of the bottom of the auxiliary cylinder;

[0049] The sockets are distributed on the top of the base, and their size and position correspond to the plug rods.

[0050] As a preferred embodiment of the present invention, the auxiliary installation unit includes:

[0051] The bearing bracket is located on one side where the two bearing plates of the bearing bracket are close to each other.

[0052] Torsion bolt shaft, which is rotatably mounted inside the bearing bracket in a front-to-back distribution and is vertically arranged;

[0053] The L-shaped auxiliary mounting bracket is fixedly installed on the top of the torsion bolt shaft, and its height corresponds to the height of the pipe fixing seat.

[0054] A rocker arm, which is fixedly mounted on the bottom of the torsion bolt shaft;

[0055] A sliding pin is fixedly installed at the bottom of the rocker arm away from the torsion bolt shaft;

[0056] The path grooves are symmetrically distributed at the top left and right ends of the base, and the sliding pins are slidably connected inside the corresponding path grooves.

[0057] As a preferred embodiment of the present invention, the maximum elastic force of the third spring is less than the minimum elastic force of the two second springs.

[0058] Compared with the prior art, the beneficial effects of the present invention are:

[0059] 1. This invention uses a power unit to drive two left and right support plates to move linearly along the guide trajectory of a linear slider and a linear guide rail. The movement of the support plates causes the lower pipe fixing seat, the upper pipe fixing seat, and the clamped ship pipe to move together until the ends of the two ship pipes abut against the left and right sides of the positioning plate, respectively. The positioning plate creates a gap of one positioning plate width between the two ship pipes. During the welding process, this prevents the weld between the two ship pipes from being too large or too small, thus improving the strength of the pipe weld.

[0060] 2. In this invention, the end of the ship's pipeline stops moving when it comes into contact with the side of the positioning plate, causing the bearing plate and the main cylinder to stop moving as well. As the cylinder's output rod continues to extend, the main piston slides along the inner wall of the main cylinder, compressing the oil inside the main cylinder and the auxiliary piston. Since the elastic force of the third spring is less than that of the second spring, the oil inside the main cylinder is forced into the interior of the auxiliary piston, pushing the auxiliary piston and the insertion rod downwards. This causes the third spring to be compressed and stored, while the insertion rod moves downwards and inserts into the insertion hole. Through the insertion of the insertion rod into the insertion hole, the bearing plate and the ship's pipeline are positioned left and right.

[0061] 3. This invention utilizes a wedge-force support that moves and contacts the outer wall of the top wheel, generating a downward wedge force that pushes the top wheel and thrust plate downwards. The thrust plate then drives the two guide rods to slide downwards along the inside of the guide holes, thereby moving the positioning table and positioning plate downwards. The compressed spring stores its force, and the positioning plate moves downwards, separating from the ends of the two ship pipes without affecting the welding torch's welding of the two ship pipes. The insertion and positioning of the insertion rod and the insertion hole prevents the two ship pipes from moving left or right, ensuring that the two ship pipes will not move even after the insertion rod is removed from between them, thus guaranteeing the stability of the weld size and improving the welding strength. Attached Figure Description

[0062] Figure 1 This is a schematic diagram of the main structure of the device used in this invention;

[0063] Figure 2 This is a schematic diagram of the unfolded structure of the pipe fixing unit of the present invention;

[0064] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0065] Figure 4 This is a schematic diagram of the weld positioning unit of the present invention;

[0066] Figure 5 This is a bottom view of the pipe fixing unit of the present invention;

[0067] Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B;

[0068] Figure 7 This is a schematic diagram of the power unit of the present invention;

[0069] Figure 8 This is a side sectional view of the main hydraulic cylinder of the present invention.

[0070] In the diagram: 100, base; 200, pipe fixing unit; 201, bearing plate; 202, lower pipe fixing seat; 203, upper pipe fixing seat; 204, groove; 205, support; 206, clamp; 207, linear slider; 208, linear guide rail; 300, weld positioning unit; 301, support platform; 302, guide platform; 303, guide hole; 304, guide rod; 305, positioning platform; 306, positioning plate; 307, spring one; 400, power unit; 401, thrust plate; 402 403. Mounting slot; 404. Top wheel; 405. Cylinder; 406. Main oil cylinder; 407. Main piston; 408. Auxiliary piston one; 409. Top rod; 4000. Wedge support; 4010. Spring two; 4011. Auxiliary cylinder; 4012. Auxiliary piston two; 4013. Insert rod; 4014. Spring three; 4015. Insertion hole; 500. Auxiliary mounting unit; 501. Bearing bracket; 502. Torsion bolt shaft; 503. L-shaped auxiliary mounting bracket; 504. Rocker arm; 505. Sliding pin; 506. Path groove. Detailed Implementation

[0071] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0072] Please see Figures 1 to 8 A welding and positioning process for ship pipelines includes the following steps:

[0073] S1, place the two ship pipes into the limiting grooves at the top of the two pipe fixing lower seats 202 on the left and right sides of the pipe fixing unit 200, and ensure that the end of the pipe is in contact with the inner side of the L-shaped auxiliary mounting bracket 503. Then, fasten the pipe fixing upper seat 203 on the top of the pipe fixing lower seat 202. The pipe fixing lower seat 202 and the pipe fixing upper seat 203 clamp and fix the pipes from top to bottom.

[0074] S2, the output rods of the two cylinders 404 extend, pushing the two main pistons 406 towards the two main oil cylinders 405, compressing the oil inside the main oil cylinders 405. Initially, under the elastic force of spring three 4014 and spring two 4010, the main pistons 406 will not slide along the inner wall of the main oil cylinders 405. The main pistons 406 will push the main oil cylinders 405 to move, causing the support plate 201 to move linearly along the guide trajectory of the linear slider 207 and the linear guide rail 208. The movement of the support plate 201 causes the pipe fixing lower seat 202, the pipe fixing upper seat 203, and the clamped ship to move. The movement of the pipeline also causes the bearing bracket 501, torsion bolt shaft 502, L-shaped auxiliary mounting bracket 503, rocker arm 504 and sliding pin 505 to move together, so that the sliding pin 505 moves along the path direction of the path groove 506, thereby causing the rocker arm 504, torsion bolt shaft 502 and L-shaped auxiliary mounting bracket 503 to rotate along the inside of the bearing bracket 501, so that the front and rear L-shaped auxiliary mounting brackets 503 are removed from the end of the ship pipeline. Then the ship pipeline continues to move with the bearing plate 201 until the ends of the left and right ship pipelines abut against the left and right sides of the positioning plate 306 respectively.

[0075] S3, the output rod of cylinder 404 continues to extend, and the main piston 406 slides along the inner wall of the main cylinder 405, compressing the oil inside the main cylinder 405 and the auxiliary piston 4012. Since the elastic force of spring 3 4014 is less than that of spring 2 4010, the oil inside the main cylinder 405 is forced into the auxiliary piston 2 4012, pushing the auxiliary piston 2 4012 and the insertion rod 4013 downward, causing spring 3 4014 to be compressed and stored. The insertion rod 4013 moves downward and inserts into the insertion hole 4015. Through the insertion of the insertion rod 4013 and the insertion hole 4015, the left and right positions of the support plate 201 and the ship's pipes are positioned. Then, the output rod of cylinder 404 continues to extend. Due to the limiting action between the bottom of the insertion rod 4013 and the bottom inner wall of the insertion hole 4015... The oil inside the main cylinder 405 pushes the auxiliary piston 407 away from the main piston 406, causing the push rod 408 and the wedge support 409 to move together. This causes the spring 4010 to be compressed and stored, while the wedge support 409 moves and contacts the outer wall of the top wheel 403, thus generating a downward wedge force on the top wheel 403. This pushes the top wheel 403 and the thrust plate 401 downward. The thrust plate 401 drives the front and rear guide rods 304 to slide downward along the inside of the guide hole 303, thereby causing the positioning platform 305 and the positioning plate 306 to move downward, compressing the spring 307 and storing energy. The positioning plate 306 moves downward and moves away from the ends of the left and right ship pipes.

[0076] like Figure 2 and Figure 3As shown, the pipe fixing unit 200 includes a support plate 201, a lower pipe fixing seat 202, an upper pipe fixing seat 203, a groove 204, a support 205, a clamp 206, a linear slider 207, and a linear guide rail 208. The support plate 201 is movably disposed on the top of the base 100. The lower pipe fixing seat 202 is fixedly installed on the top of the support plate 201. The upper pipe fixing seat 203 is detachably disposed on the top of the lower pipe fixing seat 202. The groove 204 is formed on the top of the upper pipe fixing seat 203. The support 205 is fixedly installed at the top left and top right ends of the support plate 201. The clamp 206 is fixedly installed on the top of the support 205 and is used to fix the upper pipe fixing seat 203. The linear slider 207 is fixedly installed at the bottom left and bottom rear ends of the support plate 201. The linear guide rail 208 is fixedly installed at the top of the base 100. The linear slider 207 is slidably installed outside the corresponding linear guide rail 208.

[0077] Specifically, two ship pipes are placed inside the limiting grooves 204 at the top of the two lower pipe fixing seats 202 on the left and right sides of the pipe fixing unit 200. Then, the upper pipe fixing seat 203 is fastened to the top of the lower pipe fixing seat 202. Next, the upper pipe fixing seat 203 is positioned and fixed by clamps 206. The pipes are clamped and fixed from top to bottom by the lower pipe fixing seat 202 and the upper pipe fixing seat 203.

[0078] For further details, please refer to [link / reference]. Figure 4 :

[0079] The weld positioning unit 300 includes a support platform 301, a guide platform 302, a guide hole 303, a guide rod 304, a positioning platform 305, a positioning plate 306, and a spring 307. The support platform 301 is fixedly installed on the top of the base 100, distributed front and rear. The guide platform 302 is fixedly installed on the top of the support platform 301. The guide hole 303 is opened through the top of the guide platform 302, distributed front and rear. The guide rod 304 is slidably installed inside the guide hole 303. The positioning platform 305 is fixedly installed on the top of the two guide rods 304. The positioning plate 306 is fixedly installed on the top of the positioning platform 305. The spring 307 is sleeved around the guide rod 304 and fixedly installed between the top of the guide platform 302 and the bottom of the positioning platform 305.

[0080] Specifically, the power unit 400 drives the left and right support plates 201 to move linearly along the guide trajectory of the linear slider 207 and the linear guide rail 208. The movement of the support plates 201 causes the lower pipe fixing seat 202, the upper pipe fixing seat 203, and the clamped ship pipe to move together until the ends of the left and right ship pipes respectively abut against the left and right sides of the positioning plate 306. The positioning plate 306 creates a gap between the left and right ship pipes, which is the width of the positioning plate 306. During the welding process, this prevents the weld between the two ship pipes from being too large or too small, thus improving the strength of the pipe weld.

[0081] For further details, please refer to [link / reference]. Figures 6 to 8 :

[0082] The power unit 400 includes a thrust plate 401, a mounting groove 402, a top wheel 403, a cylinder 404, a main hydraulic cylinder 405, a main piston 406, an auxiliary piston 407, a push rod 408, a wedge support 409, a second spring 4010, an auxiliary cylinder 4011, an auxiliary piston 4012, an insertion rod 4013, a third spring 4014, and an insertion hole 4015. The thrust plate 401 is fixedly installed on the bottom of the outer wall of the front and rear guide rods 304. The mounting groove 402 is opened on the left and right sides of the thrust plate 401. The top wheel 403 rotates. The cylinders 404 are installed inside the left and right mounting slots 402, symmetrically arranged on the top of the base 100 about the central axis. The main cylinder 405 is fixedly installed at the bottom of the support plate 201, and the main piston 406 is slidably installed on the inner wall of the main cylinder 405. The output end of the cylinder 404 is fixedly connected to the side of the main piston 406. The auxiliary piston 407 is slidably installed on the inner wall of the main cylinder 405 at the end away from the cylinder 404. The push rod 408 is fixedly installed on the side of the auxiliary piston 407 away from the cylinder 404, distributed front and rear. The movement extends through the interior of the main cylinder 405 and outwards. A wedge support 409 is fixedly installed at the end of the two push rods 408 furthest from the auxiliary piston 407. The position of the wedge support 409 corresponds to the position of the push wheel 403. A second spring 4010 is sleeved around the push rod 408 and fixedly installed between the auxiliary piston 407 and the inner wall of the main cylinder 405. An auxiliary cylinder 4011 is fixedly installed on the lower part of the outer wall of the main cylinder 405, and its interior is connected to the interior of the main cylinder 405. The second auxiliary piston 4010... 12 is slidably installed on the inner wall of the auxiliary cylinder 4011. The insert rod 4013 is fixedly installed at the bottom of the auxiliary piston 4012 and extends to the outer periphery of the bottom of the auxiliary cylinder 4011. The spring 3 4014 is sleeved on the outer periphery of the insert rod 4013 and is fixedly installed between the bottom of the auxiliary piston 4012 and the inner side of the bottom of the auxiliary cylinder 4011. The insertion holes 4015 are distributed on the top of the base 100, and their specifications and positions correspond to the insert rod 4013. The maximum elastic force of the spring 3 4014 is less than the minimum elastic force of the two springs 2 4010.

[0083] Specifically, the output rods of the two cylinders 404 extend, pushing the two main pistons 406 towards the two main oil cylinders 405, compressing the oil inside the main oil cylinders 405. Initially, under the elastic force of springs 3 4014 and 2 4010, the main pistons 406 will not slide along the inner wall of the main oil cylinders 405. The main pistons 406 will push the main oil cylinders 405 to move, causing the support plate 201 to move linearly along the guide trajectory of the linear slider 207 and the linear guide rail 208. The movement of the support plate 201 causes the pipe fixing lower seat 202, the pipe fixing upper seat 203, and the clamped ship pipe to move together. When the end of the ship pipe abuts against the side of the positioning plate 306... When the movement stops, the support plate 201 and the main cylinder 405 also stop moving. As the output rod of cylinder 404 continues to extend, the main piston 406 slides along the inner wall of the main cylinder 405, compressing the oil inside the main cylinder 405 and the auxiliary piston 4012. Since the elastic force of spring 3 4014 is less than that of spring 2 4010, the oil inside the main cylinder 405 is forced into the auxiliary piston 2 4012, pushing the auxiliary piston 2 4012 and the insertion rod 4013 downward. This causes spring 3 4014 to be compressed and stored, while the insertion rod 4013 moves downward and inserts into the insertion hole 4015. Through the insertion rod 4013 and the insertion hole 4015... The insertion of cylinder 4013 (15) positions the bearing plate 201 and the ship's pipes left and right. Then, the output rod of cylinder 404 continues to extend. Due to the limiting effect between the bottom of the insertion rod 4013 and the bottom inner wall of the insertion hole 4015, the insertion rod 4013 stops moving downward, meaning that the auxiliary piston 4012 will not continue to move downward. At this time, the oil inside the main cylinder 405 pushes the auxiliary piston 407 to move away from the main piston 406, causing the push rod 408 and the wedge support 409 to move together. This causes the spring 4010 to be compressed and stored, while the wedge support 409 moves and contacts the outer wall of the top wheel 403, thereby generating a downward wedge force on the top wheel 403. The function is to push the top wheel 403 and the thrust plate 401 downwards. The thrust plate 401 drives the front and rear guide rods 304 to slide downwards along the inside of the guide hole 303, thereby driving the positioning table 305 and the positioning plate 306 to move downwards. The compression spring 307 stores force, and the positioning plate 306 moves downwards and moves away from the ends of the two ship pipes on the left and right sides, without affecting the welding torch's welding of the two ship pipes. Due to the insertion and positioning function of the insertion rod 4013 and the insertion hole 4015, the two ship pipes can be prevented from moving left and right. It is ensured that the two ship pipes will not move after the insertion rod 4013 is removed from between the two ship pipes, thus ensuring the fixity of the weld size and improving the welding strength.

[0084] For further details, please refer to [link / reference]. Figure 3 and Figure 6 :

[0085] The auxiliary installation unit 500 includes a bearing bracket 501, a torsion bolt shaft 502, an L-shaped auxiliary installation bracket 503, a rocker arm 504, a sliding pin 505, and a path groove 506. The bearing bracket 501 has two bearing plates 201 on the side that are close to each other. The torsion bolt shaft 502 is rotatably installed inside the bearing bracket 501 and is vertically arranged. The L-shaped auxiliary installation bracket 503 is fixedly installed on the top of the torsion bolt shaft 502 and its height corresponds to the height of the pipe fixing base 202. The rocker arm 504 is fixedly installed on the bottom of the torsion bolt shaft 502. The sliding pin 505 is fixedly installed on the bottom of the rocker arm 504 away from the torsion bolt shaft 502. The path grooves 506 are symmetrically distributed on the top left and right ends of the base 100. The sliding pins 505 are slidably connected inside the corresponding path grooves 506.

[0086] Specifically, two ship pipes are placed inside the limiting grooves on the top of the left and right pipe fixing brackets 202, ensuring that the ends of the pipes contact the inner side of the L-shaped auxiliary mounting bracket 503. The distance between the ends of the ship pipes and the ends of the pipe fixing brackets 202 remains constant. This ensures that after the ship pipe ends contact the side of the positioning plate 306, the position of the insertion rod 4013 coincides with the position of the insertion hole 4015, allowing the insertion rod 4013 to be precisely inserted into the insertion hole 4015, thus positioning the ship pipes. Simultaneously, the support plate 201 moves, driving the pipe fixing... During the movement of the lower seat 202, the upper pipe fixing seat 203, and the clamped ship pipe, the bearing bracket 501, the torsion bolt shaft 502, the L-shaped auxiliary mounting bracket 503, the rocker arm 504, and the sliding pin 505 are also moved together. This causes the sliding pin 505 to move along the path direction of the path groove 506, thereby causing the rocker arm 504, the torsion bolt shaft 502, and the L-shaped auxiliary mounting bracket 503 to rotate along the inside of the bearing bracket 501. This allows the two L-shaped auxiliary mounting brackets 503 to move away from the end of the ship pipe without affecting the side contact between the end of the ship pipe and the positioning plate 306.

[0087] During operation, two ship pipes are placed inside the limiting grooves at the top of the left and right pipe fixing lower seats 202, ensuring that the ends of the pipes are in contact with the inner side of the L-shaped auxiliary mounting bracket 503. Then, the pipe fixing upper seat 203 is fastened to the top of the pipe fixing lower seat 202. Next, the pipe fixing upper seat 203 is positioned and fixed by the clamps 206. The pipes are clamped and fixed from top to bottom by the pipe fixing lower seat 202 and the pipe fixing upper seat 203.

[0088] The output rods of the two cylinders 404 extend, pushing the two main pistons 406 towards the two main oil cylinders 405, compressing the oil inside the main oil cylinders 405. Initially, under the elastic force of springs 3 4014 and 2 4010, the main pistons 406 will not slide along the inner wall of the main oil cylinders 405. The main pistons 406 will push the main oil cylinders 405 to move, causing the support plate 201 to move linearly along the guide trajectory of the linear slider 207 and the linear guide rail 208. The movement of the support plate 201 causes the pipe fixing lower seat 202, the pipe fixing upper seat 203, and the clamped ship pipe to move together, and also causes the bearing bracket 501, the torsion bolt shaft 502, the L-shaped auxiliary mounting bracket 503, and the rocker arm 50 4. The sliding pin 505 moves together with the sliding pin 505, causing the sliding pin 505 to move along the path direction of the path groove 506, thereby driving the rocker arm 504, the torsion bolt shaft 502 and the L-shaped auxiliary mounting bracket 503 to rotate along the inside of the bearing bracket 501, so that the front and rear L-shaped auxiliary mounting brackets 503 are moved away from the end of the ship pipe. Then the ship pipe continues to move with the bearing plate 201 until the ends of the left and right ship pipes respectively abut against the left and right sides of the positioning plate 306. The positioning plate 306 makes a gap of the width of the positioning plate 306 between the left and right ship pipes. During the welding process, it can prevent the weld between the two ship pipes from being too large or too small, and improve the strength of the pipe weld.

[0089] When the end of the ship's pipe abuts against the side of the positioning plate 306, it stops moving, causing the bearing plate 201 and the main cylinder 405 to also stop moving. As the output rod of the cylinder 404 continues to extend, the main piston 406 slides along the inner wall of the main cylinder 405, compressing the oil inside the main cylinder 405 and the auxiliary piston 4012. Since the elastic force of the third spring 4014 is less than that of the second spring 4010, the oil inside the main cylinder 405 is forced into the auxiliary piston 4012, pushing the auxiliary piston... Piston 4012, along with insert rod 4013, moves downward, compressing and storing energy in spring 4014. Insert rod 4013 then moves downward and inserts into insertion hole 4015. Through the insertion of insert rod 4013 into insertion hole 4015, the bearing plate 201 and the ship's pipes are positioned laterally. Then, the output rod of cylinder 404 continues to extend. Due to the limiting effect between the bottom of insert rod 4013 and the bottom inner wall of insertion hole 4015, insert rod 4013 stops moving downward, thus stopping the auxiliary piston 401. 2. It will not continue to move downwards. At this time, the oil inside the main cylinder 405 pushes the auxiliary piston 407 to move away from the main piston 406, causing the push rod 408 and the wedge support 409 to move together. This causes the spring 4010 to be compressed and stored, while the wedge support 409 moves and contacts the outer wall of the top wheel 403, thereby generating a downward wedge force on the top wheel 403. This pushes the top wheel 403 and the thrust plate 401 downwards. The thrust plate 401 drives the two guide rods 304 to move along the inside of the guide hole 303. Sliding downwards causes the positioning platform 305 and positioning plate 306 to move downwards, compressing the spring 307 and storing force. The positioning plate 306 moves downwards and moves away from the ends of the two ship pipes on the left and right sides, without affecting the welding torch's welding of the two ship pipes. Due to the insertion and positioning effect of the insertion rod 4013 and the insertion hole 4015, the two ship pipes can be prevented from moving left and right. This ensures that the two ship pipes will not move after the insertion rod 4013 is removed from between them, thus ensuring the fixity of the weld size and improving the welding strength.

[0090] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A welding and positioning process for ship pipelines, characterized in that, It includes a base (100), a pipe fixing unit (200), a weld positioning unit (300), a power unit (400), and an auxiliary installation unit (500); The pipe fixing unit (200) includes: A support plate (201) is movably disposed on top of the base (100); The pipe fixing lower seat (202) is fixedly installed on the top of the bearing plate (201); The upper pipe fixing seat (203) is detachably mounted on the top of the lower pipe fixing seat (202); The weld positioning unit (300) includes: A support platform (301) is fixedly installed on the top of the base (100) in a front-to-back distribution; A guide platform (302) is fixedly installed on the top of a support platform (301); Guide holes (303) are distributed front to back and are opened through the top of the guide platform (302); Guide rod (304), which is slidably mounted inside guide hole (303); The power unit (400) includes: A thrust plate (401) is fixedly installed on the bottom of the outer wall of the front and rear guide rods (304); The mounting groove (402) is provided on the left and right sides of the thrust plate (401); Top wheel (403), which is rotatably installed inside the left and right mounting slots (402); Cylinder (404), the cylinder (404) is symmetrically arranged on the top of the base (100) about the central axis of the base (100); The main hydraulic cylinder (405) is fixedly installed at the bottom of the bearing plate (201); The main piston (406) is slidably mounted on the inner wall of the main cylinder (405), and the output end of the cylinder (404) is fixedly connected to the side of the main piston (406). The power unit (400) also includes: Auxiliary piston one (407) is slidably mounted on the inner wall of the main cylinder (405) at one end away from the cylinder (404); Push rod (408), which is fixedly installed on the side of the auxiliary piston (407) away from the cylinder (404) and moves through the inside of the main oil cylinder (405) and extends to its outside; A wedge force bracket (409) is fixedly installed at the end of the front and rear push rods (408) away from the auxiliary piston (407), and the position of the wedge force bracket (409) corresponds to the position of the push wheel (403); Spring 2 (4010) is sleeved around the top rod (408) and fixedly installed between the auxiliary piston 1 (407) and the inner wall of the main oil cylinder (405); An auxiliary cylinder (4011) is fixedly installed on the lower part of the outer wall of the main oil cylinder (405), and the interior of the auxiliary cylinder (4011) is connected to the interior of the main oil cylinder (405). Auxiliary piston two (4012) is slidably mounted on the inner wall of auxiliary cylinder (4011); Insert rod (4013), which is fixedly installed at the bottom of auxiliary piston two (4012) and extends to the bottom periphery of auxiliary cylinder (4011); Spring 3 (4014) is sleeved around the plug rod (4013) and fixedly installed between the bottom of the auxiliary piston 2 (4012) and the inner side of the bottom of the auxiliary cylinder (4011); The sockets (4015) are distributed on the top of the base (100) and their specifications and positions correspond to those of the plug rod (4013); The auxiliary installation unit (500) includes: Bearing bracket (501), the bearing bracket (501) on the side surface where the two bearing plates (201) are close to each other; Torsion bolt shaft (502), which is rotatably mounted inside bearing bracket (501) in a front-to-back distribution and is vertically arranged; L-shaped auxiliary mounting bracket (503) is fixedly mounted on the top of the torsion bolt shaft (502), and its height corresponds to the height of the pipe fixing seat (202); A rocker arm (504) is fixedly mounted on the bottom of a torsion bolt shaft (502); A sliding pin (505) is fixedly installed at the bottom of the rocker arm (504) away from the torsion bolt shaft (502); The path groove (506) is symmetrically distributed at the top left and right ends of the base (100), and the sliding pin (505) is slidably connected inside the corresponding path groove (506). It also includes the following steps: S1, place the two ship pipes inside the limiting grooves on the top of the two pipe fixing lower seats (202) of the pipe fixing unit (200), and ensure that the end of the pipe is in contact with the inner side of the L-shaped auxiliary mounting bracket (503). Then, fasten the pipe fixing upper seat (203) on the top of the pipe fixing lower seat (202). The pipe fixing lower seat (202) and the pipe fixing upper seat (203) clamp and fix the pipes from top to bottom. S2, the output rods of the two cylinders (404) extend, pushing the two main pistons (406) towards the two main oil cylinders (405), compressing the oil inside the main oil cylinders (405). Initially, under the elastic force of spring three (4014) and spring two (4010), the main pistons (406) will not slide along the inner wall of the main oil cylinders (405). The main pistons (406) will push the main oil cylinders (405) to move, causing the bearing plate (201) to move linearly along the guide trajectory of the linear slider (207) and the linear guide rail (208). The movement of the bearing plate (201) causes the lower pipe fixing seat (202), the upper pipe fixing seat (203), and the clamped... The ship's pipeline moves together, which also drives the bearing bracket (501), torsion bolt shaft (502), L-shaped auxiliary mounting bracket (503), rocker arm (504) and sliding pin (505) to move together, so that the sliding pin (505) moves along the path direction of the path groove (506), thereby driving the rocker arm (504), torsion bolt shaft (502) and L-shaped auxiliary mounting bracket (503) to rotate along the inside of the bearing bracket (501), so that the front and rear L-shaped auxiliary mounting brackets (503) are removed from the end of the ship's pipeline. Then the ship's pipeline continues to move with the bearing plate (201) until the ends of the left and right ship's pipelines abut against the left and right sides of the positioning plate (306) respectively. S3, the output rod of cylinder (404) continues to extend, the main piston (406) slides along the inner wall of the main oil cylinder (405), compressing the oil inside the main oil cylinder (405) and auxiliary piston two (4012). Since the elastic force of spring three (4014) is less than the elastic force of spring two (4010), the oil inside the main oil cylinder (405) is forced into the interior of auxiliary piston two (4012), pushing auxiliary piston two (4012) along with insert rod (4014) 13) Moving downwards compresses and stores the energy in spring three (4014), while the insertion rod (4013) moves downwards and inserts into the interior of the insertion hole (4015). Through the insertion of the insertion rod (4013) and the insertion hole (4015), the left and right positions of the support plate (201) and the ship's pipes are achieved. Then, the output rod of the cylinder (404) continues to extend. Due to the limiting action between the bottom of the insertion rod (4013) and the bottom inner wall of the insertion hole (4015), The oil inside the main cylinder (405) pushes the auxiliary piston (407) away from the main piston (406), causing the push rod (408) and the wedge support (409) to move together, thus compressing the spring (4010) and storing its power. The wedge support (409) moves and contacts the outer wall of the top wheel (403), thereby generating a downward wedge force on the top wheel (403), pushing the top wheel (403) and the thrust plate (401) downward. The thrust plate (401) drives the front and rear guide rods (304) to slide downward along the inside of the guide hole (303), thereby driving the positioning platform (305) and the positioning plate (306) to move downward, compressing the spring (307) and storing its power. The positioning plate (306) moves downward and moves away from the ends of the left and right ship pipes. Among them, the pipe fixing unit (200) is symmetrically distributed on the left and right sides of the central axis of the base (100) and is movably installed on the top of the base (100); Weld positioning unit (300), the weld positioning unit (300) is fixedly installed on the top of the base (100) and located between the left and right pipe fixing units (200), the weld positioning unit (300) is used for pipe weld positioning; A power unit (400) is fixedly installed at the bottom of the pipe fixing unit (200) and is used to push the pipe fixing unit (200). An auxiliary installation unit (500) is fixedly installed at one end of two pipe fixing units (200) that are close to each other, and is used for positioning the two pipe fixing units (200).

2. The ship pipeline welding positioning process according to claim 1, characterized in that, The pipe fixing unit (200) also includes: A groove (204) is formed on the top of the pipe fixing seat (203); Support (205), the support (205) is fixedly installed at the top left end and top right end of the bearing plate (201) in a front and rear distribution; Clamp (206), the clamp (206) is fixedly installed on the top of the support (205), the clamp (206) is used to fix the pipe fixing seat (203).

3. The ship pipeline welding positioning process according to claim 2, characterized in that, The pipe fixing unit (200) also includes: A linear slider (207) is fixedly installed at the bottom left end and bottom rear end of the support plate (201) in a front-to-back distribution. Linear guide rail (208) is fixedly installed on the top of base (100) in a front-to-back distribution, and linear slider (207) is slidably installed on the periphery of the corresponding linear guide rail (208).

4. The ship pipeline welding positioning process according to claim 3, characterized in that, The weld positioning unit (300) also includes: Positioning platform (305), which is fixedly installed on the top of the front and rear guide rods (304); Positioning plate (306), the positioning plate (306) is fixedly installed on the top of the positioning platform (305); Spring 1 (307) is sleeved around the guide rod (304) and fixedly installed between the top of the guide platform (302) and the bottom of the positioning platform (305).

5. The ship pipeline welding positioning process according to claim 4, characterized in that, The maximum elastic force of the third spring (4014) is less than the minimum elastic force of the two second springs (4010).

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