Ship pipeline welding and positioning process

Abstract

The invention belongs to the technical field of pipeline welding, and particularly relates to a ship pipeline welding positioning process, pipeline fixing units are bilaterally symmetrically distributed about the central axis of a base and movably mounted at the top of the base, and a welding seam positioning unit is fixedly arranged at the top of the base. A power unit drives a left bearing plate and a right bearing plate to linearly move along guide tracks of a linear sliding block and a linear guide rail, and the bearing plates move to drive a lower pipeline fixing seat, an upper pipeline fixing seat and a clamped ship pipeline to move together until the ends of the left ship pipeline and the right ship pipeline abut against the left side face and the right side face of a positioning plate correspondingly. The left ship pipeline and the right ship pipeline are spaced by a gap with the width equal to that of the positioning plate through the positioning plate, in the welding process, the welding seam between the two ship pipelines can be prevented from being too large or too small, and the strength of the pipeline welding position is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline welding, and in particular relates to a ship pipeline welding positioning process. Background Art

[0002] Ship piping refers to the pipes on board a ship, including those related to the power system and the living system. In a ship's piping system, welding is required to connect different pipes, such as connecting pipes of different diameters or pipes with different directions within the same system. For example, in a fuel oil delivery system, when connecting the large-diameter pipe leading from the main fuel storage tank to the small-diameter pipe leading to the main engine, welding is required to ensure smooth fuel delivery and a tight seal at the connection. After searching, Chinese patent application number 2025100466955 discloses a process for welding ship pipeline assemblies, in which the center of the fixed ring can always be located on the axis of the ship pipeline. At the same time, the extension length of the second hydraulic telescopic rod is adjusted so that the second hydraulic telescopic rod can contact the ship pipeline, and ship pipelines of different sizes can be positioned, so that the reducer and the ship pipeline can achieve stable welding after docking.

[0003] However, in the process of welding ship pipelines, in order to ensure welding strength, the gap between the two sets of pipelines should not be too large or too small. A gap that is too large may easily lead to incomplete welding, while a small weld seam may prevent the welding rod from extending between the two pipelines and can only weld the surface of the pipeline. Therefore, the strength of the pipeline after welding is limited. Summary of the Invention

[0004] The purpose of the present invention is to provide a ship pipeline welding positioning process to solve the problems raised in the above background technology.

[0005] The present invention provides the following technical solution: a ship pipeline welding positioning process, characterized in that it includes the following steps: S1. Place the two ship pipes in the limiting grooves on the top of the left and right pipe fixing lower seats of the pipe fixing unit, and ensure that the ends of the pipes are in contact with the inner side of the L-shaped auxiliary mounting frame. Then buckle 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 pipes up and down. When the oil pump is turned on, the oil pump will stop and the oil in the oil tank will stop working. S3, the output rod of the cylinder continues to extend, and the main piston slides along the inner wall of the main oil cylinder, compressing the oil in the main oil cylinder and the auxiliary piston 2. Since the elastic force of spring 3 is less than the elastic force of spring 2, the oil in the main oil cylinder presses into the interior of the auxiliary piston 2, pushing the auxiliary piston 2 and the plug rod downward, so that spring 3 is compressed and stored, and the plug rod moves downward and is inserted into the interior of the socket. Through the plugging of the plug rod and the socket, the left and right positions of the load plate and the ship pipeline are positioned. Then, the output rod of the cylinder continues to extend. Due to the limiting effect between the bottom of the plug rod and the bottom inner wall of the socket, the plug rod The rod stops moving downward, that is, the auxiliary piston 2 will not move further downward. At this time, the oil inside the main oil cylinder pushes the auxiliary piston 1 to move away from the main piston, driving the push rod and the wedge force bracket to move together, so that the spring 2 is compressed and stored, and the wedge force bracket 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 downward. The thrust plate drives the front and rear guide rods to slide downward along the inside of the guide hole, thereby driving the positioning platform and the positioning plate to move downward, compressing the spring 1 to store force, and the positioning plate moves downward and moves away from the ends of the left and right ship pipes. The pipe fixing units are symmetrically distributed about the central axis of the base and are movably mounted on the top of the base. A weld positioning unit, which is fixedly arranged on the top of the base and located between the left and right pipe fixing units, and is used for positioning the pipe weld; A power unit, the power unit being fixedly arranged at the bottom of the pipeline fixing unit and being used to push the pipeline fixing unit; The auxiliary installation unit is fixedly arranged at one end where the two pipe fixing units are close to each other, and is used for positioning the two pipe fixing units.

[0006] As a preferred solution of the present invention, the pipeline fixing unit includes: A carrying plate, the carrying plate being movably arranged on the top of the base; A pipe fixing lower seat, wherein the pipe fixing lower seat is fixedly mounted on the top of the bearing plate; A pipe fixing upper seat, wherein the pipe fixing upper seat is detachably arranged on the top of the pipe fixing lower seat; A groove is provided on the top of the pipe fixing upper seat; Supports, which are distributed front and back and fixedly mounted on the top left end and the top right end of the bearing plate; The clamp is fixedly installed on the top of the support and is used to fix the pipeline to the upper seat.

[0007] As a preferred solution of the present invention, the pipeline fixing unit further includes: Linear sliders, which are distributed front and back and fixedly mounted on the left end and rear end of the bottom of the bearing plate; The linear guide rails are fixedly installed on the top of the base in a front-to-back distribution, and the linear sliders are slidably installed on the periphery of the corresponding linear guide rails.

[0008] As a preferred solution of the present invention, the weld positioning unit includes: Support platforms, the support platforms are distributed front and back and fixedly installed on the top of the base; A guide platform, the guide platform is fixedly mounted on the top of the support platform; Guide holes, the guide holes are distributed front and back and are opened through the top of the guide platform; A guide rod, the guide rod being slidably mounted inside the guide hole; A positioning platform, which is fixedly mounted on the top of the front and rear guide rods; A positioning plate, the positioning plate is fixedly mounted on the top of the positioning platform; Spring 1, a set of springs is arranged on the periphery of the guide rod and is fixedly installed between the top of the guide platform and the bottom of the positioning platform.

[0009] As a preferred solution of the present invention, the power unit includes: A thrust plate, which is fixedly mounted on the bottom of the outer walls of the front and rear guide rods; A placement groove is provided on the left and right sides of the thrust plate; A top wheel, the top wheel being rotatably mounted inside the left and right mounting grooves; The cylinder is symmetrically arranged on the top of the base about the central axis of the base; A master oil cylinder, which is fixedly mounted on the bottom of the bearing plate; The main piston is slidably mounted on the inner wall of the main oil cylinder, and the output end of the cylinder is fixedly connected to the side of the main piston.

[0010] As a preferred solution of the present invention, the power unit further includes: Auxiliary piston 1, wherein the auxiliary piston 1 is slidably mounted on the inner wall of the main oil cylinder at an end away from the cylinder; A push rod, which is fixedly mounted on a side of the auxiliary piston away from the cylinder and is distributed front and back, and movably passes through the interior of the main cylinder and extends to the outside thereof; A wedge force bracket, the wedge force bracket is fixedly mounted on one end of the front and rear push rods away from the auxiliary piston, and the position of the wedge force bracket corresponds to the position of the push wheel; Spring 2 is sleeved on the periphery of the push rod and fixedly installed between the auxiliary piston 1 and the inner wall of the main oil cylinder.

[0011] As a preferred solution of the present invention, the power unit further includes: An auxiliary cylinder, wherein the auxiliary cylinder is fixedly mounted on the lower portion of the outer wall of the main oil cylinder, and the interior of the auxiliary cylinder is connected to the interior of the main oil cylinder; A second auxiliary piston, said second auxiliary piston being slidably mounted on the inner wall of the auxiliary cylinder; An insert rod, which is fixedly mounted on the bottom of the second auxiliary piston and extends to the periphery of the bottom of the auxiliary cylinder; Spring three, said spring three sets are arranged on the periphery of the insertion rod and fixedly installed between the bottom of the auxiliary piston two and the inner side surface of the bottom of the auxiliary cylinder; The sockets are distributed on the left and right sides and are opened on the top of the base, and the specifications and positions correspond to the insertion rods.

[0012] As a preferred solution of the present invention, the auxiliary installation unit includes: The bearing bracket is located on a side where the left and right bearing plates of the bearing bracket are close to each other; The torsion bolt shaft is rotatably mounted inside the bearing bracket in a front-to-rear distribution and is vertically arranged; An L-shaped auxiliary mounting bracket, which is fixedly mounted on the top of the torsion bolt shaft and has a height corresponding to the height of the pipe fixing lower seat; A rocker arm, the rocker arm being fixedly mounted on the bottom of the torsion bolt shaft; A sliding pin, the sliding pin being fixedly mounted on an end of the bottom of the rocker arm away from the torsion bolt shaft; The path grooves are symmetrically distributed front and back and are opened at the left and right ends of the top of the base, and the sliding pins are slidably connected to the corresponding path grooves.

[0013] As a preferred solution of the present invention, the maximum elastic force of the spring three is less than the minimum elastic force of the two springs two.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention uses a power unit to drive the left and right supporting plates to move linearly along the guide tracks of the linear slider and the linear guide rail. The movement of the supporting plates drives the pipe fixing lower seat, the pipe fixing upper seat, and the clamped ship pipe to move together until the ends of the left and right ship pipes respectively abut the left and right sides of the positioning plates. The positioning plates are used to separate the left and right ship pipes by a gap the width of the positioning plates. During the welding process, the weld between the two ship pipes can be prevented from being too large or too small, thereby improving the strength of the pipe weld.

[0015] 2. According to the present invention, when the end of the ship pipeline abuts against the side of the positioning plate, it stops moving, causing the load-bearing plate and the main oil cylinder to also stop moving. As the output rod of the cylinder continues to extend, the main piston will slide along the inner wall of the main oil cylinder, compressing the oil inside the main oil cylinder and the auxiliary piston 2. Since the elastic force of the spring 3 is less than the elastic force of the spring 2, the oil inside the main oil cylinder is pressed into the interior of the auxiliary piston 2, pushing the auxiliary piston 2 and the insertion rod downward, causing the spring 3 to be compressed and stored, and the insertion rod moves downward and is inserted into the interior of the socket. By plugging the insertion rod into the socket, the load-bearing plate and the ship pipeline are positioned left and right.

[0016] 3. The present invention moves the wedge force bracket 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 downward. The thrust plate drives the front and rear guide rods to slide downward along the inside of the guide hole, thereby driving the positioning platform and the positioning plate to move downward. Once the compression spring accumulates force, the positioning plate moves downward and moves away from the ends of the left and right ship pipes, which will not affect the welding of the two ship pipes by the welding gun; due to the plug-in positioning effect of the insertion rod and the insertion hole, the two ship pipes can be prevented from moving left and right, ensuring that the two ship pipes will not move after the insertion rod is removed from between the two ship pipes, thereby ensuring the stability of the weld size and improving the welding strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of the device used in the present invention; Figure 2 Schematic diagram of the expanded structure of the pipeline fixing unit of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the enlarged structure at A in the middle; Figure 4 Schematic diagram of the structure of the weld positioning unit of the present invention; Figure 5 Schematic diagram of the bottom view of the pipeline fixing unit of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure at B in the middle; Figure 7Schematic diagram of the structure of the power unit of the present invention; Figure 8 It is a schematic side sectional structure diagram of the master cylinder of the present invention.

[0018] In the figure: 100, base; 200, pipe fixing unit; 201, bearing plate; 202, pipe fixing lower seat; 203, pipe fixing upper seat; 204, groove; 205, support; 206, clamp; 207, linear slider; 208, linear guide; 300, weld positioning unit; 301, support platform; 302, guide platform; 303, guide hole; 304, guide rod; 305, positioning platform; 306, positioning plate; 307, spring 1; 400, power unit; 401, thrust plate; 402 , placement groove; 403, top wheel; 404, cylinder; 405, main oil cylinder; 406, main piston; 407, auxiliary piston one; 408, push rod; 409, wedge force bracket; 4010, spring two; 4011, auxiliary cylinder; 4012, auxiliary piston two; 4013, insertion rod; 4014, spring three; 4015, socket; 500, auxiliary mounting unit; 501, bearing bracket; 502, torsion bolt shaft; 503, L-shaped auxiliary mounting frame; 504, rocker arm; 505, sliding pin; 506, path groove. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0020] See also Figures 1 to 8 , a ship pipeline welding positioning process, comprising the following steps: S1: Place two ship pipelines in the limiting grooves on the top of the left and right pipeline fixing lower seats 202 of the pipeline fixing unit 200, respectively, and ensure that the ends of the pipelines are in contact with the inner side of the L-shaped auxiliary mounting bracket 503. Then, buckle the pipeline fixing upper seat 203 onto the top of the pipeline fixing lower seat 202. The pipeline fixing lower seat 202 and the pipeline fixing upper seat 203 clamp and fix the pipelines in place. S2, the output rods of the left and right cylinders 404 extend, pushing the two main pistons 406 to move toward 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 cylinder 405. The main pistons 406 will push the main oil cylinder 405 to move, driving the bearing plate 201 to move linearly along the guide track of the linear slider 207 and the linear guide rail 208. The bearing plate 201 moves, driving the pipeline fixing lower seat 202, the pipeline fixing upper seat 203 and the clamped ship. The pipe moves together, and also drives the bearing bracket 501, the torsion bolt shaft 502, the L-shaped auxiliary mounting frame 503, the rocker arm 504 and the 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, the torsion bolt shaft 502 and the L-shaped auxiliary mounting frame 503 to rotate along the inside of the bearing bracket 501, so that the front and rear L-shaped auxiliary mounting frames 503 are moved away from the ends of the ship pipe, and 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; S3, the output rod of the cylinder 404 continues to extend, and 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 the auxiliary piston 2 4012. Since the elastic force of the spring 3 4014 is less than the elastic force of the spring 2 4010, the oil inside the main oil cylinder 405 is pressed into the interior of the auxiliary piston 2 4012, pushing the auxiliary piston 2 4012 and the insertion rod 4013 downward, so that the spring 3 4014 is compressed and stored, and the insertion rod 4013 moves downward and is inserted into the interior of the socket 4015. Through the connection between the insertion rod 4013 and the socket 4015, the left and right positioning of the carrier plate 201 and the ship pipeline are carried out. Then, the output rod of the cylinder 404 continues to extend. Due to the limit action between the bottom of the insertion rod 4013 and the bottom inner wall of the socket 4015 The piston rod 4013 stops moving downward, that is, the auxiliary piston 2 4012 does not move downward any further. At this time, the oil in the main oil cylinder 405 pushes the auxiliary piston 1 407 to move away from the main piston 406, driving the push rod 408 and the wedge force bracket 409 to move together, so that the spring 2 4010 is compressed and stored, and the wedge force bracket 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 1 307 to store force, and the positioning plate 306 moves downward and moves away from the ends of the left and right ship pipelines. like Figure 2 and Figure 3As shown, the pipe fixing unit 200 includes a bearing plate 201, a pipe fixing lower seat 202, a pipe fixing upper seat 203, a groove 204, a support 205, a clamp 206, a linear slider 207 and a linear guide 208. The bearing plate 201 is movably arranged on the top of the base 100, the pipe fixing lower seat 202 is fixedly installed on the top of the bearing plate 201, the pipe fixing upper seat 203 is detachably arranged on the top of the pipe fixing lower seat 202, the groove 204 is opened on the top of the pipe fixing upper seat 203, the support 205 is fixedly installed on the top left end and the top right end of the bearing plate 201 in a front-to-back distribution, the clamp 206 is fixedly installed on the top of the support 205, the clamp 206 is used to fix the pipe fixing upper seat 203, the linear slider 207 is fixedly installed on the bottom left end and the bottom rear end of the bearing plate 201 in a front-to-back distribution, the linear guide 208 is fixedly installed on the top of the base 100 in a front-to-back distribution, and the linear slider 207 is slidably installed on the outside of the corresponding linear guide 208.

[0021] Specifically, the two ship pipelines are placed inside the limiting grooves 204 on the top of the left and right pipeline fixing lower seats 202 of the pipeline fixing unit 200 respectively, and then the pipeline fixing upper seat 203 is buckled on the top of the pipeline fixing lower seat 202, and then the pipeline fixing upper seat 203 is positioned and fixed by the clamp 206, and the pipeline fixing lower seat 202 and the pipeline fixing upper seat 203 are clamped and fixed up and down.

[0022] For further details, please refer to Figure 4 : 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 1 307. The support platform 301 is fixedly installed on the top of the base 100 in a front-to-back distribution, the guide platform 302 is fixedly installed on the top of the support platform 301, the guide holes 303 are distributed front-to-back and are opened through the top of the guide platform 302, the guide rod 304 is slidably installed inside the guide hole 303, the positioning platform 305 is fixedly installed on the top of the front and rear guide rods 304, the positioning plate 306 is fixedly installed on the top of the positioning platform 305, and the spring 1 307 is sleeved on the outer periphery of the guide rod 304 and fixedly installed between the top of the guide platform 302 and the bottom of the positioning platform 305.

[0023] Specifically, the power unit 400 drives the left and right supporting plates 201 to move linearly along the guide tracks of the linear slider 207 and the linear guide rail 208. The supporting plates 201 move, driving the pipeline fixing lower seat 202, the pipeline fixing upper seat 203 and the clamped ship pipeline to move together until the ends of the left and right ship pipelines respectively abut against the left and right sides of the positioning plate 306. The positioning plate 306 is used to separate the left and right ship pipelines. A gap of the width of the positioning plate 306 is formed between the left and right ship pipelines. During the welding process, the weld between the two ship pipelines can be prevented from being too large or too small, thereby improving the strength of the pipeline weld.

[0024] For further details, please refer to Figures 6 to 8 : The power unit 400 includes a thrust plate 401, a placement groove 402, a top wheel 403, a cylinder 404, a main oil cylinder 405, a main piston 406, an auxiliary piston 1 407, a push rod 408, a wedge force bracket 409, a spring 2 4010, an auxiliary cylinder 4011, an auxiliary piston 2 4012, a plug rod 4013, a spring 3 4014 and a socket 4015. The thrust plate 401 is fixedly mounted on the bottom of the outer wall of the front and rear guide rods 304. The placement groove 402 is opened on the left and right sides of the thrust plate 401. The top wheel 403 rotates Installed inside the left and right placement grooves 402, the cylinder 404 is symmetrically arranged on the top of the base 100 about the central axis of the base 100, the main oil cylinder 405 is fixedly installed at the bottom of the carrier plate 201, and the main piston 406 is slidably installed on the inner wall of the main oil cylinder 405. The output end of the cylinder 404 is fixedly connected to the side of the main piston 406. The auxiliary piston 1 407 is slidably installed on the inner wall of the main oil cylinder 405 away from the cylinder 404. The push rod 408 is distributed front and back and fixedly installed on the side of the auxiliary piston 1 407 away from the cylinder 404. And it moves through the interior of the main oil cylinder 405 and extends to its outside. The wedge force bracket 409 is fixedly installed on the end of the front and rear two push rods 408 away from the auxiliary piston 1 407. The position of the wedge force bracket 409 corresponds to the position of the top wheel 403. The second spring 4010 is sleeved on the outer periphery of the push rod 408 and fixedly installed between the auxiliary piston 1 407 and the inner wall of the main oil cylinder 405. The 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. The auxiliary piston 2 40 12 is slidably mounted on the inner wall of the auxiliary cylinder 4011, the insertion rod 4013 is fixedly mounted on the bottom of the auxiliary piston 2 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 insertion rod 4013 and fixedly mounted between the bottom of the auxiliary piston 2 4012 and the inner side surface of the bottom of the auxiliary cylinder 4011, the insertion holes 4015 are distributed on the left and right sides and are opened on the top of the base 100, and the specifications and positions correspond to the insertion rod 4013, and the maximum elastic force of the spring 3 4014 is less than the minimum elastic force of the two springs 4010.

[0025] Specifically, the output rods of the left and right cylinders 404 are extended to push the two main pistons 406 toward the two main oil cylinders 405, compressing the oil inside the main oil cylinders 405. Initially, under the elastic force of the spring three 4014 and the spring two 4010, the main piston 406 will not slide along the inner wall of the main oil cylinder 405. The main piston 406 will push the main oil cylinder 405 to move, driving the supporting plate 201 to move in a straight line along the guide track of the linear slider 207 and the linear guide rail 208. The supporting plate 201 moves, driving the pipeline fixing lower seat 202, the pipeline fixing upper seat 203 and the clamped ship pipeline to move together. When the end of the ship pipeline hits the side of the positioning plate 306, the main piston 406 will not slide along the inner wall of the main oil cylinder 405. When the connection is made, the movement stops, causing the bearing plate 201 and the main oil cylinder 405 to stop moving. As the output rod of the cylinder 404 continues to extend, the main piston 406 will slide along the inner wall of the main oil cylinder 405, compressing the oil inside the main oil cylinder 405 and the auxiliary piston 2 4012. Since the elastic force of the spring 3 4014 is less than the elastic force of the spring 2 4010, the oil pressure inside the main oil cylinder 405 is pressed into the interior of the auxiliary piston 2 4012, pushing the auxiliary piston 2 4012 and the insertion rod 4013 downward, causing the spring 3 4014 to be compressed and stored, and the insertion rod 4013 moves downward and is inserted into the interior of the socket 4015. 15 is inserted, thereby positioning the load plate 201 and the ship's pipeline to the left and right. Then, the output rod of the 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, that is, the auxiliary piston 2 4012 does not move further downward. At this time, the oil inside the main oil cylinder 405 pushes the auxiliary piston 1 407 to move away from the main piston 406, driving the push rod 408 and the wedge force bracket 409 to move together, so that the spring 2 4010 is compressed and stored, and the wedge force bracket 409 moves and contacts the outer wall of the top wheel 403, thereby generating a downward wedge force on the top wheel 403. The top wheel 403 and the thrust plate 401 are pushed downward, and 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 1 307 to store force, and the positioning plate 306 moves downward and moves away from the ends of the left and right ship pipes, which will not affect the welding of the two ship pipes by the welding gun; due to the plug-in positioning effect of the insertion rod 4013 and the insertion hole 4015, the two ship pipes can be prevented from moving left and right, ensuring that the two ship pipes will not move after the insertion rod 4013 is removed from between the two ship pipes, thereby ensuring the fixity of the weld size and improving the welding strength.

[0026] For further details, please refer to Figure 3 and Figure 6 : The auxiliary mounting unit 500 includes a bearing bracket 501, a torsion bolt shaft 502, an L-shaped auxiliary mounting frame 503, a rocker arm 504, a sliding pin 505 and a path groove 506. The torsion bolt shaft 502 is rotatably mounted inside the bearing bracket 501 on the side surface where the left and right bearing plates 201 of the bearing bracket 501 are close to each other, and is vertically arranged. The L-shaped auxiliary mounting frame 503 is fixedly mounted on the top of the torsion bolt shaft 502, and its height corresponds to the height of the pipe fixed lower seat 202. The rocker arm 504 is fixedly mounted on the bottom of the torsion bolt shaft 502. The sliding pin 505 is fixedly mounted on the end of the bottom of the rocker arm 504 away from the torsion bolt shaft 502. The path grooves 506 are symmetrically distributed front and back and are opened at the left and right ends of the top of the base 100. The sliding pin 505 is slidably connected to the corresponding path grooves 506.

[0027] Specifically, the two ship pipes are placed in the limiting grooves on the top of the left and right pipe fixing lower seats 202 respectively, and the ends of the pipes are ensured to contact the inner side of the L-shaped auxiliary mounting bracket 503, so that the distance between the ends of the ship pipes and the ends of the pipe fixing lower seat 202 is always fixed. After the ends of the ship contact the side of the positioning plate 306, the position of the insertion rod 4013 coincides with the position of the insertion hole 4015, so that the insertion rod 4013 is accurately inserted into the inside of the insertion hole 4015, thereby realizing the positioning of the ship pipes, and the bearing plate 201 moves, driving the pipe fixing When the lower seat 202, the pipe fixing upper seat 203 and the clamped ship pipe move together, 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 driven 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, 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, which will not affect the side contact between the end of the ship pipe and the positioning plate 306.

[0028] During operation, two ship pipes are placed in the limiting grooves on the top of the left and right pipe fixing lower seats 202 respectively, and the ends of the pipes are ensured to contact the inner side of the L-shaped auxiliary mounting frame 503. Then, the pipe fixing upper seat 203 is buckled on the top of the pipe fixing lower seat 202. Then, the pipe fixing upper seat 203 is positioned and fixed by the clamp 206, and the pipe fixing lower seat 202 and the pipe fixing upper seat 203 are clamped and fixed up and down. The output rods of the left and right cylinders 404 extend to push the two main pistons 406 toward the two main oil cylinders 405, compressing the oil inside the main oil cylinders 405. Initially, under the elastic force of the spring three 4014 and the spring two 4010, the main pistons 406 will not slide along the inner wall of the main oil cylinder 405. The main pistons 406 will push the main oil cylinder 405 to move, driving the bearing plate 201 to move linearly along the guide track of the linear slider 207 and the linear guide rail 208. The bearing plate 201 moves, driving the pipeline fixing lower seat 202, the pipeline fixing upper seat 203 and the clamped ship pipeline to move together, and also driving the bearing bracket 501, the torsion bolt shaft 502, the L-shaped auxiliary mounting bracket 503, the rocker arm 50 4 and the sliding pin 505 move together, so that the sliding pin 505 moves 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 frame 503 to rotate along the inside of the bearing bracket 501, so that the front and rear L-shaped auxiliary mounting frames 503 are removed from the ends of the ship pipeline, and then the ship pipeline continues to move with the bearing plate 201 until the ends of the left and right ship pipelines respectively abut against the left and right sides of the positioning plate 306. The positioning plate 306 is used to separate the left and right ship pipelines from each other by a gap of the width of the positioning plate 306. During the welding process, the weld between the two ship pipelines can be prevented from being too large or too small, thereby improving the strength of the pipeline weld; When the end of the ship's pipeline abuts against the side of the positioning plate 306, it stops moving, causing the bearing plate 201 and the main oil cylinder 405 to 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 oil cylinder 405, compressing the oil inside the main oil cylinder 405 and the auxiliary piston 2 4012. Since the elastic force of the spring 3 4014 is less than the elastic force of the spring 2 4010, the oil inside the main oil cylinder 405 is pressed into the interior of the auxiliary piston 2 4012, pushing the auxiliary piston 2 4012 to move. Plug 2 4012 and rod 4013 move downward, compressing spring 3 4014 to store force, and rod 4013 moves downward to be inserted into socket 4015. Through the insertion of rod 4013 and socket 4015, the left and right positions of carrier plate 201 and ship pipeline are positioned. Then, the output rod of cylinder 404 continues to extend. Due to the limiting effect between the bottom of rod 4013 and the bottom inner wall of socket 4015, rod 4013 stops moving downward, that is, auxiliary piston 2 401 2 will not continue to move downward. At this time, the oil in the main oil cylinder 405 pushes the auxiliary piston 1 407 to move away from the main piston 406, driving the push rod 408 and the wedge force bracket 409 to move together, so that the spring 2 4010 is compressed and stored, and the wedge force bracket 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 along the inner wall of the guide hole 303. It slides downward, thereby driving the positioning platform 305 and the positioning plate 306 to move downward, compressing the spring 1 307 to store force, and the positioning plate 306 moves downward and moves away from the ends of the left and right ship pipes, which will not affect the welding of the two ship pipes by the welding gun; due to the plug-in positioning effect of the insertion rod 4013 and the insertion hole 4015, the two ship pipes can be prevented from moving left and right, ensuring that the two ship pipes will not move after the insertion rod 4013 is removed from between the two ship pipes, thereby ensuring the stability of the weld size and improving the welding strength.

[0029] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A ship pipeline welding positioning process, characterized in that: The following steps are involved: S1, respectively placing two ship pipelines inside the limiting grooves on the top of the left and right pipeline fixing lower seats (202) of the pipeline fixing unit (200), and ensuring that the ends of the pipelines are in contact with the inner side of the L-shaped auxiliary mounting frame (503), and then buckling the pipeline fixing upper seat (203) on the top of the pipeline fixing lower seat (202), and the pipeline fixing lower seat (202) and the pipeline fixing upper seat (203) clamp and fix the pipelines up and down; S2, the output rods of the left and right cylinders (404) extend, pushing the two main pistons (406) to move toward the two main oil cylinders (405), compressing the oil inside the main oil cylinder (405). Initially, under the elastic force of spring three (4014) and spring two (4010), the main piston (406) will not slide along the inner wall of the main oil cylinder (405). The main piston (406) will push the main oil cylinder (405) to move, driving the bearing plate (201) to move linearly along the guide track of the linear slider (207) and the linear guide rail (208). The bearing plate (201) moves, driving the pipeline fixed lower seat (202), the pipeline fixed upper seat (203) and the clamped The ship pipeline moves together, and also drives the bearing bracket (501), the torsion bolt shaft (502), the L-shaped auxiliary mounting frame (503), the rocker arm (504) and the 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), the torsion bolt shaft (502) and the L-shaped auxiliary mounting frame (503) to rotate along the inside of the bearing bracket (501), so that the front and rear L-shaped auxiliary mounting frames (503) are moved away from the ends of the ship pipeline, and then the ship pipeline continues to move with the bearing plate (201) until the ends of the left and right ship pipelines respectively abut against the left and right sides of the positioning plate (306); S3, the output rod of the cylinder (404) continues to extend, and 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 the auxiliary piston 2 (4012). Since the elastic force of the spring 3 (4014) is less than the elastic force of the spring 2 (4010), the oil pressure inside the main oil cylinder (405) is pressed into the interior of the auxiliary piston 2 (4012), pushing the auxiliary piston 2 (4012) together with the insertion rod (4010). 13) moves downward, so that the spring three (4014) is compressed and stored, and the plug rod (4013) moves downward and is inserted into the inside of the socket (4015). By plugging the plug rod (4013) and the socket (4015), the left and right sides of the carrier plate (201) and the ship pipeline are positioned. Then, the output rod of the cylinder (404) continues to extend. Due to the limit action between the bottom of the plug rod (4013) and the bottom inner wall of the socket (4015), the bearing plate (201) and the ship pipeline are positioned. The plunger (4013) stops moving downward, that is, the auxiliary piston (4012) does not continue to move downward. At this time, the oil in the main oil cylinder (405) pushes the auxiliary piston (407) to move away from the main piston (406), driving the push rod (408) and the wedge force bracket (409) to move together, so that the spring (4010) is compressed and stored, and the wedge force bracket (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) to store force, and the positioning plate (306) moves downward and moves away from the ends of the left and right ship pipelines. The pipe fixing units (200) are symmetrically distributed about the central axis of the base (100) and are movably mounted on the top of the base (100); A weld positioning unit (300), the weld positioning unit (300) being fixedly arranged on the top of the base (100) and located between the left and right pipe fixing units (200), the weld positioning unit (300) being used for positioning the pipe weld; A power unit (400), the power unit (400) being fixedly disposed at the bottom of the pipeline fixing unit (200) and being used to push the pipeline fixing unit (200); An auxiliary installation unit (500) is fixedly arranged at one end of the two pipe fixing units (200) that are close to each other, and is used for positioning the two pipe fixing units (200).

2. A ship pipeline welding positioning process according to claim 1, characterized in that: The pipeline fixing unit (200) comprises: A carrying plate (201), the carrying plate (201) being movably arranged on the top of the base (100); A pipe fixing lower seat (202), wherein the pipe fixing lower seat (202) is fixedly mounted on the top of the bearing plate (201); A pipeline fixing upper seat (203), wherein the pipeline fixing upper seat (203) is detachably arranged on the top of the pipeline fixing lower seat (202); A groove (204), wherein the groove (204) is formed on the top of the pipeline fixing upper seat (203); Supports (205), the supports (205) are distributed front and back and fixedly mounted on the top left end and the top right end of the bearing plate (201); A clamp (206) is fixedly mounted on the top of the support (205), and the clamp (206) is used to fix the pipeline fixing upper seat (203).

3. A ship pipeline welding positioning process according to claim 2, characterized in that: The pipeline fixing unit (200) further includes: Linear sliders (207), the linear sliders (207) are distributed front and back and fixedly mounted on the left end and rear end of the bottom of the supporting plate (201); The linear guide rails (208) are fixedly mounted on the top of the base (100) in a front-to-back distribution, and the linear sliders (207) are slidably mounted on the periphery of the corresponding linear guide rails (208).

4. A ship pipeline welding positioning process according to claim 3, characterized in that: The weld positioning unit (300) comprises: Support platforms (301), the support platforms (301) are distributed front and back and fixedly mounted on the top of the base (100); A guide platform (302), wherein the guide platform (302) is fixedly mounted on the top of the support platform (301); Guide holes (303), the guide holes (303) are distributed front and back and penetrate through the top of the guide platform (302); A guide rod (304), wherein the guide rod (304) is slidably mounted inside the guide hole (303); A positioning platform (305), the positioning platform (305) is fixedly mounted on the top of the front and rear guide rods (304); A positioning plate (306), the positioning plate (306) being fixedly mounted on the top of the positioning platform (305); Spring 1 (307), wherein the spring 1 (307) is sleeved on the periphery of the guide rod (304) and fixedly installed between the top of the guide platform (302) and the bottom of the positioning platform (305).

5. A ship pipeline welding positioning process according to claim 4, characterized in that: The power unit (400) comprises: A thrust plate (401), the thrust plate (401) being fixedly mounted on the bottom of the outer walls of the front and rear guide rods (304); A placement groove (402), wherein the placement groove (402) is provided on the left side and the right side of the thrust plate (401); A top wheel (403), the top wheel (403) being rotatably mounted inside the left and right mounting grooves (402); A cylinder (404), the cylinder (404) being disposed on the top of the base (100) in a bilaterally symmetrical manner about the central axis of the base (100); A main oil cylinder (405), wherein the main oil cylinder (405) is fixedly mounted on the bottom of the bearing plate (201); A main piston (406) is slidably mounted on the inner wall of the main oil cylinder (405), and the output end of the cylinder (404) is fixedly connected to the side of the main piston (406).

6. A ship pipeline welding positioning process according to claim 5, characterized in that: The power unit (400) further includes: Auxiliary piston 1 (407), wherein the auxiliary piston 1 (407) is slidably mounted on the inner wall of the main oil cylinder (405) at one end away from the cylinder (404); A push rod (408), the push rod (408) is fixedly mounted on a side of the auxiliary piston (407) away from the cylinder (404) and is movable through the interior of the main oil cylinder (405) and extends to the outside thereof; A wedge force bracket (409), the wedge force bracket (409) is fixedly mounted on one 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 top wheel (403); Spring 2 (4010), said spring 2 (4010) is sleeved on the periphery of the push rod (408) and fixedly installed between the auxiliary piston 1 (407) and the inner wall of the main oil cylinder (405).

7. A ship pipeline welding positioning process according to claim 6, characterized in that: The power unit (400) further includes: An auxiliary cylinder (4011), wherein the auxiliary cylinder (4011) is fixedly mounted on the lower portion 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 2 (4012), wherein the auxiliary piston 2 (4012) is slidably mounted on the inner wall of the auxiliary cylinder (4011); An inserting rod (4013), the inserting rod (4013) is fixedly mounted on the bottom of the second auxiliary piston (4012) and extends to the periphery of the bottom of the auxiliary cylinder (4011); Spring three (4014), said spring three (4014) is sleeved on the periphery of the insertion rod (4013) and fixedly installed between the bottom of the auxiliary piston two (4012) and the inner side surface of the bottom of the auxiliary cylinder (4011); The sockets (4015) are distributed on the left and right sides and are opened on the top of the base (100), and the specifications and positions correspond to those of the plug rod (4013).

8. A ship pipeline welding positioning process according to claim 7, characterized in that: The auxiliary installation unit (500) comprises: A bearing bracket (501), the bearing bracket (501) being located on a side surface where the left and right bearing plates (201) are close to each other; A torsion bolt shaft (502), the torsion bolt shaft (502) is rotatably mounted inside the bearing bracket (501) in a front-to-rear distribution and is vertically arranged; An L-shaped auxiliary mounting frame (503), the L-shaped auxiliary mounting frame (503) being fixedly mounted on the top of the torsion bolt shaft (502), and having a height corresponding to that of the pipeline fixed lower seat (202); A rocker arm (504), wherein the rocker arm (504) is fixedly mounted on the bottom of the torsion bolt shaft (502); A sliding pin (505), wherein the sliding pin (505) is fixedly mounted on an end of the bottom of the rocker arm (504) away from the torsion bolt shaft (502); The path grooves (506) are symmetrically distributed front and back and are opened at the left and right ends of the top of the base (100), and the sliding pins (505) are slidably connected inside the corresponding path grooves (506).

9. A ship pipeline welding positioning process according to claim 8, characterized in that: The maximum elastic force of the spring three (4014) is less than the minimum elastic force of the two spring twos (4010).

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