Auxiliary structure for pipeline welding based on laser detection
The use of laser-assisted detection structures enables precise alignment of pipe connections, solving the welding error problem caused by visual judgment and improving the quality and stability of pipe welding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 黑龙江省建筑安装集团有限公司
- Filing Date
- 2026-02-02
- Publication Date
- 2026-04-24
AI Technical Summary
In existing technologies, it is impossible to accurately determine whether pipe connections are aligned by visual inspection, leading to the accumulation of welding errors and affecting the pipe's load-bearing capacity and stable operation.
A laser-based pipe welding auxiliary structure is adopted, which uses a laser emitter and receiver to detect pipe alignment and adjusts the pipe position through a laser distance measurement module to ensure precise docking.
It achieves high-precision alignment of pipeline connections, reduces welding errors, and ensures the long-term safe operation of the pipeline system.
Smart Images
Figure CN121912151A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of auxiliary equipment for pipeline welding, and in particular to an auxiliary structure for pipeline welding based on laser detection. Background Technology
[0002] Currently, in the process of hydraulic test construction, pipeline welding is the core process to ensure the system's sealing and pressure resistance. Its quality and efficiency directly determine the project construction cycle and long-term operation and maintenance costs. Since hydraulic test systems usually need to withstand high pressure, pulsating loads and complex media environments, welded joints must not only meet strict mechanical performance and sealing requirements, but also have good comprehensive performance such as fatigue resistance and corrosion resistance.
[0003] However, in the existing technology, when connecting pipelines, it is not possible to accurately determine whether the two ends of the pipeline are aligned by visual inspection, which easily leads to welding errors. The superposition of multiple errors can cause a significant decrease in the load-bearing capacity of the pipeline, affecting the stable operation of the pipeline. Summary of the Invention
[0004] The purpose of this invention is to provide an auxiliary structure for pipeline welding based on laser detection, which aims to solve the technical problem in the prior art that when connecting pipelines, it is impossible to accurately determine whether the two ends of the pipeline are aligned by visual inspection, which easily leads to welding errors. The superposition of multiple errors can cause a significant decrease in the load-bearing capacity of the pipeline and affect the stable operation of the pipeline.
[0005] To achieve the above objectives, the present invention employs an auxiliary structure for pipeline welding based on laser detection, comprising a base, wherein the upper end of the base is provided with two assembly clamping units; Each clamping unit includes an adjustable base plate. The upper end of the adjustable base plate is provided with a first clamping detection component and a second clamping detection component. A circumferential detection unit is provided between the first clamping detection component and the second clamping detection component. The upper end of the adjustable base plate is provided with two sets of propulsion units and two sets of electromagnetic units. The electromagnetic units are adapted to the base.
[0006] The circumferential detection unit includes a detection ring, the outer wall of which is provided with two sets of mounting brackets, and the inner side of the detection ring is embedded with multiple sets of laser distance measurement modules, which are evenly distributed in a circle.
[0007] The first clamping detection component consists of two clamping assemblies, two sets of laser receivers, and one set of laser emitters. The second clamping detection component consists of two clamping assemblies, two sets of laser emitters, and one set of laser receivers.
[0008] Each clamping assembly includes a lifting arm, a first mounting plate on one side of the lifting arm, two sets of linear bearings on the inner side of the first mounting plate, a first telescopic electric cylinder on one side of the first mounting plate, a second mounting plate at the output end of the first telescopic electric cylinder, a clamping arc plate on one side of the second mounting plate, the clamping arc plate and the second mounting plate being detachably connected by bolts, and two sets of guide shafts on the outer wall of the clamping arc plate, the two sets of guide shafts being embedded inside the two sets of linear bearings.
[0009] The lifting arm includes a lifting outer cylinder, a second telescopic electric cylinder is provided inside the lifting outer cylinder, and an L-shaped support arm is provided inside the lifting outer cylinder, with the L-shaped support arm located at the output end of the second telescopic electric cylinder.
[0010] Each propulsion unit includes an outer propulsion cylinder, inside which is a third telescopic electric cylinder. Inside the outer propulsion cylinder is an inner propulsion cylinder, which is located at the output end of the third telescopic electric cylinder. The upper end of the inner propulsion cylinder is provided with a roller frame, inside which is a propulsion wheel. A drive motor is provided on one side of the roller frame, and the output end of the drive motor is adapted to the propulsion wheel.
[0011] The adjustable base plate includes a mounting panel, a guide plate at the lower end of the mounting panel, and multiple sets of rollers at the lower end of the mounting panel.
[0012] Each electromagnetic unit includes an electromagnetic chamber, the interior of which is provided with a magnetic column, and the outer wall of the magnetic column is provided with an energized coil.
[0013] The base includes a slide rail, the slide rail has multiple sets of guide rods inside, and the upper end of the slide rail has two sets of positioning components.
[0014] Each of the positioning components includes a limiting plate, and the limiting plate has multiple sets of limiting guide posts inside, with a magnetic positioning plate at the upper end of the multiple sets of limiting guide posts.
[0015] This invention discloses an auxiliary structure for pipe welding based on laser detection. The base serves as the foundation of the entire auxiliary structure. Two sets of clamping units are disposed at the upper end of the base to clamp two pipes to be welded. In each set of clamping units, a first clamping detection component and a second clamping detection component simultaneously clamp the pipes and perform laser alignment on the two pipes. In use, the two pipes are clamped onto the two sets of clamping units respectively, and then the presence of a single pipe is detected by the laser emitter and the laser receiver. After a single pipe is tested and found to be straight, the remaining compatible laser emitters and receivers perform alignment checks on the two sets of clamping units. This alignment check continues until each compatible laser emitter and receiver detects an alignment signal, completing the alignment of the two pipes. If the two pipes are not aligned, multiple laser distance measurement modules perform outer circle distance checks on the two sets of pipes, reading the distance data from each module. Then, the laser distance measurement modules for each set of pipes are aligned. The distance data from the optical distance measurement module is compared and one of the clamping units is adjusted. The height and left and right movement of the pipeline are adjusted by the first clamping detection component and the second clamping detection component until the two sets of pipelines are aligned. When the two sets of pipelines are aligned, each set of laser receivers can receive the laser signal of the corresponding laser emitter. At the same time, the parameters of the two sets of circumferential detection units are the same. Each set of laser emitters consists of an emitter body and a collimator coaxially mounted at the front end of its output port, ensuring that the emitted laser beam has a very small divergence angle and that the central axis of the beam is strictly coincident with the optical center of the collimator, forming a stable reference straight line. The laser receiver consists of a receiver body and a linear CCD embedded in its cavity and optically coupled, used for high-precision detection of the position of the laser spot on the CCD photosensitive surface. The above structure realizes the transformation of pipeline docking from rough to precise, from manual experience judgment to data-driven automatic adjustment, which greatly improves the docking coaxiality and welding quality, effectively reduces the welding error of pipeline docking, and ensures the long-term safe operation of the pipeline system. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of an auxiliary structure for pipeline welding based on laser detection according to the present invention.
[0018] Figure 2 This is a front view of an auxiliary structure for pipeline welding based on laser detection according to the present invention.
[0019] Figure 3 This is the invention Figure 2 A cross-sectional view of the internal structure along the AA line.
[0020] Figure 4 This is the invention Figure 3 A cross-sectional view of the internal structure of the BB line.
[0021] Figure 5 This is the invention Figure 3 A cross-sectional view of the internal structure of the CC line.
[0022] Figure 6 This is a partial structural schematic diagram of an auxiliary structure for pipeline welding based on laser detection according to the present invention.
[0023] 1-Detection ring, 2-Mounting bracket, 3-Laser distance measurement module, 4-Laser receiver, 5-Laser emitter, 6-First mounting plate, 7-Linear bearing, 8-First telescopic electric cylinder, 9-Second mounting plate, 10-Clamping arc plate, 11-Guide shaft, 12-Lifting outer cylinder, 13-Second telescopic electric cylinder, 14-L-arm, 15-Pushing outer cylinder, 16-Third telescopic electric cylinder, 17-Pushing inner cylinder, 18-Roller frame, 19-Pushing wheel, 20-Drive motor, 21-Mounting panel, 22-Guide plate, 23-Roller, 24-Electromagnetic chamber, 25-Magnetic column, 26-Electrified coil, 27-Slide rail, 28-Guide slide rod, 29-Limiting plate, 30-Limiting guide column, 31-Magnetic positioning plate. Detailed Implementation
[0024] Please see Figures 1 to 6 , Figure 1 This is a schematic diagram of an auxiliary structure for pipeline welding based on laser detection according to the present invention; Figure 2 This is a front view of an auxiliary structure for pipeline welding based on laser detection according to the present invention; Figure 3 This is the invention Figure 2 A cross-sectional view of the internal structure of the AA line; Figure 4 This is the invention Figure 3 A cross-sectional view of the internal structure of the BB line; Figure 5 This is the invention Figure 3 A cross-sectional view of the internal structure of the CC line; Figure 6 This is a partial structural diagram of an auxiliary structure for pipeline welding based on laser detection according to the present invention, wherein, Figure 6 The dashed line in the middle represents the matching path between laser receiver 4 and laser transmitter 5.
[0025] The present invention provides an auxiliary structure for pipeline welding based on laser detection, including a base, wherein the upper end of the base is provided with two assembly clamping units; Each clamping unit includes an adjustable base plate. The upper end of the adjustable base plate is provided with a first clamping detection component and a second clamping detection component. A circumferential detection unit is provided between the first clamping detection component and the second clamping detection component. The upper end of the adjustable base plate is provided with two sets of propulsion units and two sets of electromagnetic units. The electromagnetic units are adapted to the base.
[0026] In this embodiment, the base serves as the foundation of the entire auxiliary structure. Two sets of clamping units are installed at the upper end of the base to clamp the two pipes to be welded. In each clamping unit, the first clamping detection component and the second clamping detection component clamp the pipes while simultaneously performing laser alignment on the two pipes. During use, the two pipes are clamped onto the two sets of clamping units. Then, the laser emitter 5 and the laser receiver 4 work together to detect whether a single pipe is bent. After a single pipe is found to be straight, the remaining compatible laser emitter 5 and laser receiver 4 perform alignment detection on the two sets of clamping units, thus achieving alignment detection of the two sets of pipes. Alignment of the two pipes is completed when the compatible laser emitter 5 and laser receiver 4 detect alignment signals. If the two pipes are not aligned, multiple sets of laser distance measurement modules 3 measure the outer diameter of the two sets of pipes. The system detects the distance by reading the distance data of each laser distance measurement module 3. Then, it compares the distance data of each laser distance measurement module 3 in the two sets of pipelines and adjusts one of the clamping units. The first clamping detection component and the second clamping detection component adjust the height and left and right movement of the pipeline until the two sets of pipelines are aligned. When the two sets of pipelines are aligned, each set of laser receivers 4 can receive the laser signal of the corresponding laser emitter 5. At the same time, the parameters of the two sets of circumferential detection units are the same. Each set of laser emitters 5 consists of an emitter body and a collimator coaxially mounted at the front end of its light outlet to ensure that the emitted laser beam has a very small divergence angle and that the central axis of the beam is strictly coincident with the optical center of the collimator to form a stable reference straight line. The laser receiver 4 consists of a receiver body and a linear CCD embedded in its cavity and optically coupled to it for high-precision detection of the position of the laser spot on the CCD photosensitive surface. In the early stage of pipe connection, the distance between the two sets of clamping units can be adjusted according to the pipe size and welding requirements. Then, the clamping units are fixed by the magnetic adsorption of the electromagnetic unit and the base. After the two sets of pipes are welded, the pushing unit moves to the lower end of the pipe to lift the pipe. After the first clamping detection component and the second clamping detection component release the clamp on the pipe, the pushing unit moves the pipe to one side and pushes it to automatically unload the welded pipe.
[0027] Furthermore, the circumferential detection unit includes a detection ring 1, the outer wall of the detection ring 1 is provided with two sets of mounting brackets 2, and the inner side of the detection ring 1 is embedded with multiple sets of laser distance measurement modules 3, which are evenly distributed circumferentially.
[0028] In this embodiment, the detection ring 1 is an annular frame and is fixed to the adjustment base plate by two sets of mounting brackets 2. Multiple sets of laser distance measurement modules 3 are respectively embedded in the inner side of the detection ring 1 to collect distance data of the entire outer circle of the pipeline. The comparison value of the two sets of outer circle data is used to make a direction and distance movement reference for the alignment adjustment between pipelines.
[0029] Furthermore, the first clamping detection component consists of two clamping assemblies, two sets of laser receivers 4, and one set of laser emitters 5; The second clamping detection component consists of two clamping assemblies, two sets of laser emitters 5 and one set of laser receivers 4.
[0030] In this embodiment, the clamping unit includes a first clamping detection component and a second clamping detection component, comprising a total of three sets of laser emitters 5 and three sets of laser receivers 4. The clamping component is used to clamp and align the pipeline. Among the three sets of laser emitters 5 and three sets of laser receivers 4, two sets of laser emitters 5 and two sets of laser receivers 4 are used to perform alignment detection on the first clamping detection component and the second clamping detection component. The remaining set of laser emitters 5 and one set of laser receivers 4 are matched with the laser emitters 5 and laser receivers 4 in another set of clamping units to monitor the alignment of the two sets of clamping units.
[0031] Furthermore, each clamping assembly includes a lifting arm, a first mounting plate 6 on one side of the lifting arm, two sets of linear bearings 7 on the inner side of the first mounting plate 6, a first telescopic electric cylinder 8 on one side of the first mounting plate 6, a second mounting plate 9 at the output end of the first telescopic electric cylinder 8, a clamping arc plate 10 on one side of the second mounting plate 9, the clamping arc plate 10 and the second mounting plate 9 being detachably connected by bolts, and two sets of guide shafts 11 on the outer wall of the clamping arc plate 10, the two sets of guide shafts 11 being embedded inside the two sets of linear bearings 7.
[0032] In this embodiment, the clamping assembly is an actuator for clamping the pipeline and making slight attitude adjustments. The lifting arm provides the main vertical adjustment capability. The first mounting plate 6 is fixed to the end of the lifting arm, and the linear bearing 7 is embedded inside the first mounting plate 6. The guide shaft 11 is inserted into the corresponding linear bearing 7. The clamping arc plate 10 is located at one end of the guide shaft 11, ensuring that the clamping arc plate 10 can only move linearly in the horizontal direction without any rotational freedom. When the first telescopic electric cylinder 8 is activated, it pushes the second mounting plate 9 and the clamping arc plate 10 connected thereto to move along the direction defined by the guide shaft 11, thereby clamping or releasing the pipeline. The inner arc surface shape of the clamping arc plate 10 matches the outer diameter of the pipeline, and the clamping arc plate 10 can be replaced with a suitable one according to different pipeline outer diameters by means of bolt connection.
[0033] Furthermore, the lifting arm includes a lifting outer cylinder 12, a second telescopic electric cylinder 13 is provided inside the lifting outer cylinder 12, and an L-shaped support arm 14 is provided inside the lifting outer cylinder 12, with the L-shaped support arm 14 located at the output end of the second telescopic electric cylinder 13.
[0034] In this embodiment, the lifting arm is a key lifting mechanism connecting the clamping assembly and the adjusting base plate. The lifting outer cylinder 12 is vertically fixed on the adjusting base plate as a fixed outer sleeve. The cylinder body of the second telescopic electric cylinder 13 inside is also fixed at the bottom. The vertical section of the L-arm 14 is connected to the top of the piston rod of the second telescopic electric cylinder 13, and its horizontal section is used to install the first mounting plate 6 of the clamping assembly. When the second telescopic electric cylinder 13 extends or retracts, it drives the L-arm 14 to drive the entire clamping assembly above to perform a vertical lifting and lowering movement. This movement mainly achieves two functions: first, when initially placing the pipeline, it lowers the clamping mechanism to a low position for easy operation; second, during the centering adjustment process, according to the control system command, it performs a slight vertical lifting or lowering to correct the angular deviation or height difference of the pipeline in the vertical plane.
[0035] Furthermore, each propulsion unit includes a propulsion outer cylinder 15, inside which is provided a third telescopic electric cylinder 16, and inside which is provided a propulsion inner cylinder 17. The propulsion inner cylinder 17 is located at the output end of the third telescopic electric cylinder 16. The upper end of the propulsion inner cylinder 17 is provided with a roller frame 18, inside which is provided a propulsion wheel 19. A drive motor 20 is provided on one side of the roller frame 18, and the output end of the drive motor 20 is adapted to the propulsion wheel 19.
[0036] In this embodiment, the outer propulsion cylinder 15 is fixed to the adjusting base plate, and the third telescopic electric cylinder 16 inside controls the lifting and lowering of the inner propulsion cylinder 17. In the non-working state, the third telescopic electric cylinder 16 is in the retracted state, and the inner propulsion cylinder 17, the roller frame 18 above it, and the propulsion wheel 19 are lowered to a low position and do not contact the pipeline. When the pipeline needs to be propelled, the third telescopic electric cylinder 16 extends and lifts the inner propulsion cylinder 17 until the propulsion wheel 19 inside the roller frame 18 reliably abuts against the lower surface of the pipeline. Subsequently, the drive motor 20 starts and drives the propulsion wheel 19 to rotate on the roller frame 18. The friction between the propulsion wheel 19 and the pipe wall is converted into a force that drives the pipeline to slide along its axial direction. By controlling the speed and direction of the drive motor 20, precise control of the pipeline's forward and backward movement and speed can be achieved.
[0037] Furthermore, the adjusting base plate includes a mounting panel 21, a guide plate 22 is provided at the lower end of the mounting panel 21, and multiple sets of rollers 23 are provided at the lower end of the mounting panel 21.
[0038] In this embodiment, the mounting panel 21 is slidably mounted inside the base via the guide plate 22. The rollers 23 and the guide plate 22 facilitate linear movement adjustment of the clamping unit, thereby adjusting the distance between the two sets of clamping units.
[0039] Furthermore, each set of electromagnetic units includes an electromagnetic chamber 24, the interior of which is provided with a magnetic column 25, and the outer wall of the magnetic column 25 is provided with an energized coil 26.
[0040] In this embodiment, after the position adjustment of the clamping unit is completed, the energizing coil 26 is energized. The current in the energizing coil 26 generates a magnetic field, which causes uniform electromagnetic force at both ends of the magnetic guide post 25. The electromagnetic force formed makes the magnetic guide post 25 magnetically attracted and fixed to the base, ensuring the rapid fixing of the clamping unit.
[0041] Furthermore, the base includes a slide rail 27, the slide rail 27 is provided with multiple sets of guide slide rods 28 inside, and the upper end of the slide rail 27 is provided with two sets of positioning components.
[0042] In this embodiment, the slide rail 27 and the guide slide rod 28 provide a precise sliding surface for the guide plate 22 of the adjusting base plate. The length of the slide rail 27 determines the maximum adjustable distance between the two clamping units to accommodate pipeline sections of different lengths.
[0043] Furthermore, each of the positioning components includes a limiting plate 29, and the limiting plate 29 has multiple sets of limiting guide posts 30 inside, and the upper end of the multiple sets of limiting guide posts 30 is provided with a magnetic positioning plate 31.
[0044] In this embodiment, the limiting plate 29 is placed inside the slide rail 27. Under the action of the guide post, it prevents the magnetic positioning plate 31 from detaching from the slide rail 27. At the same time, under the action of the limiting plate 29 and the guide post, the magnetic positioning plate 31 can move up and down. When the electromagnetic unit is not energized, there is a gap between the magnetic positioning plate 31 and the magnetic guide post 25 to prevent direct contact from affecting the normal movement of the adjustment base plate. When the electromagnetic unit is energized, the magnetic guide post 25 has electromagnetic force, and the short-distance high-intensity electromagnetic force will attract the magnetic positioning plate 31 upward, so that the magnetic positioning plate 31 moves upward and magnetically matches the magnetic guide post 25.
[0045] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.
Claims
1. An auxiliary structure for pipe welding based on laser detection, characterized in that, Includes a base, the upper end of which is provided with two assembly clamping units; Each clamping unit includes an adjustable base plate. The upper end of the adjustable base plate is provided with a first clamping detection component and a second clamping detection component. A circumferential detection unit is provided between the first clamping detection component and the second clamping detection component. The upper end of the adjustable base plate is provided with two sets of propulsion units and two sets of electromagnetic units. The electromagnetic units are adapted to the base.
2. The auxiliary structure for pipeline welding based on laser detection as described in claim 1, characterized in that, The circumferential detection unit includes a detection ring. The outer wall of the detection ring is provided with two sets of mounting brackets. Multiple sets of laser distance measurement modules are embedded in the inner side of the detection ring. The multiple sets of laser distance measurement modules are evenly distributed in a circle.
3. The auxiliary structure for pipeline welding based on laser detection as described in claim 1, characterized in that, The first clamping detection component consists of two clamping assemblies, two sets of laser receivers, and one set of laser emitters; The second clamping detection component consists of two clamping assemblies, two sets of laser emitters, and one set of laser receivers.
4. The auxiliary structure for pipeline welding based on laser detection as described in claim 3, characterized in that, Each clamping assembly includes a lifting arm, a first mounting plate on one side of the lifting arm, two sets of linear bearings on the inner side of the first mounting plate, a first telescopic electric cylinder on one side of the first mounting plate, a second mounting plate on the output end of the first telescopic electric cylinder, a clamping arc plate on one side of the second mounting plate, the clamping arc plate and the second mounting plate being detachably connected by bolts, and two sets of guide shafts on the outer wall of the clamping arc plate, the two sets of guide shafts being embedded inside the two sets of linear bearings.
5. The auxiliary structure for pipeline welding based on laser detection as described in claim 4, characterized in that, The lifting arm includes a lifting outer cylinder, inside which is a second telescopic electric cylinder, and inside which is an L-shaped support arm, which is located at the output end of the second telescopic electric cylinder.
6. The auxiliary structure for pipeline welding based on laser detection as described in claim 1, characterized in that, Each propulsion unit includes an outer propulsion cylinder, inside which is a third telescopic electric cylinder. Inside the outer propulsion cylinder is an inner propulsion cylinder, which is located at the output end of the third telescopic electric cylinder. At the upper end of the inner propulsion cylinder is a roller frame, inside which is a propulsion wheel. On one side of the roller frame is a drive motor, and the output end of the drive motor is adapted to the propulsion wheel.
7. The auxiliary structure for pipeline welding based on laser detection as described in claim 1, characterized in that, The adjustable base plate includes a mounting panel, a guide plate at the lower end of the mounting panel, and multiple sets of rollers at the lower end of the mounting panel.
8. The auxiliary structure for pipeline welding based on laser detection as described in claim 1, characterized in that, Each electromagnetic unit includes an electromagnetic chamber, the interior of which is provided with a magnetic column, and the outer wall of the magnetic column is provided with an energized coil.
9. The auxiliary structure for pipeline welding based on laser detection as described in claim 1, characterized in that, The base includes a slide rail, the slide rail has multiple sets of guide rods inside, and the upper end of the slide rail has two sets of positioning components.
10. The auxiliary structure for pipeline welding based on laser detection as described in claim 9, characterized in that, Each of the positioning components includes a limiting plate, and the limiting plate has multiple sets of limiting guide posts inside, with a magnetic positioning plate at the upper end of the multiple sets of limiting guide posts.