Full-angle welding device and welding method for high-strength steel pipeline

Abstract

The invention discloses a high-strength steel pipeline full-angle welding device which comprises a fixed welding table, a pushing assembly is connected to the side wall of the fixed welding table, a movable welding table is connected to the pushing assembly, clamping mechanisms are connected to the table top of the movable welding table and the table top of the fixed welding table, and a driving mechanism is connected to the bottom face of the fixed welding table. Connecting holes are formed in the table surfaces of the movable welding table and the fixed welding table, and the driving mechanism penetrates through the connecting holes to be connected with the clamping mechanism. The invention further discloses a welding method of the high-strength steel pipeline all-angle welding device. Two to-be-welded high-strength steel pipeline workpieces are placed in the two clamp rings, the electric push rod pushes the clamping plates to extrude and fix the high-strength steel pipeline workpieces, the transmission gears are connected with the annular toothed plates outside the clamp rings to drive the two clamp rings to rotate, and rotation of the to-be-welded high-strength steel pipeline workpieces is achieved; in this way, 360-degree dead-corner-free welding operation is carried out on the welding butt joint position of the high-strength steel pipeline in the welding process.

Description

Technical Field

[0001] The invention belongs to the technical field of welding equipment, and in particular relates to a full-angle welding device for a high-strength steel pipeline, and also relates to a welding method for the welding device. Background Art

[0002] High-strength steel is a type of steel with very high tensile strength and yield strength. With the development of modern manufacturing industries such as petrochemicals, hydropower engineering, bridge construction and the automotive industry, the requirements for material performance are getting higher and higher. As a high-performance material, high-strength steel has been widely used in many fields.

[0003] Characteristics of high-strength steel High strength: The tensile strength and yield strength of high-strength steel are much higher than those of ordinary steel, which enables it to use less material under the same load conditions, thereby reducing the weight of the structure. Good toughness: Despite its high strength, high-strength steel generally also has good toughness, able to maintain its integrity and functionality when impacted or deformed. Good processability: Despite the high strength of high-strength steel, it can still be cut, formed and welded through appropriate processes to meet different manufacturing needs. Corrosion resistance and wear resistance: Some types of high-strength steel also have good corrosion resistance and wear resistance, and can be used for a long time under harsh environmental conditions.

[0004] High-strength steel has a wide range of applications, generally in long-distance pipelines: high-strength steel is increasingly used in oil pipelines, hydropower pipelines, etc., because it can significantly reduce the weight of steel and significantly reduce the welding workload; bridge construction: the application of high-strength steel in bridge construction is also increasing, especially in bridges that need to span long distances or bear heavy loads; construction: in the construction field, high-strength steel is used to manufacture the frames and supporting structures of high-rise buildings, as well as the roofs and supporting structures of public facilities such as large stadiums and exhibition centers; aerospace: in the aerospace field, high-strength steel is used to manufacture key components of aircraft and spacecraft, such as wings, fuselages and landing gears. High-strength steel pipe workpieces are used in large quantities in the above-mentioned fields. When welding high-strength steel pipe workpieces, they need to be butt-welded tightly. However, after the high-strength steel pipe workpieces are butt-welded, it is often difficult to weld them 360 degrees without dead angles, resulting in low welding efficiency of high-strength steel pipes, and various welding quality defects are prone to occur, causing great safety hazards. Summary of the invention

[0005] The purpose of the present invention is to provide a high-strength steel pipeline full-angle welding device, which solves the problem that the welding structure in the prior art is difficult to weld the high-strength steel pipeline without dead angles.

[0006] Another object of the present invention is to provide a welding method for a high-strength steel pipeline full-angle welding device.

[0007] The technical solution adopted by the present invention is a high-strength steel pipe full-angle welding device, which includes a fixed welding table, a side wall of the fixed welding table is connected to a pushing assembly, the pushing assembly is connected to a mobile welding table, the table tops of the mobile welding table and the fixed welding table are both connected to a clamping mechanism, the bottom surface of the fixed welding table is connected to a driving mechanism, the table tops of the mobile welding table and the fixed welding table are both provided with connecting holes, and the driving mechanism is connected to the clamping mechanism through the connecting holes.

[0008] The present invention is also characterized in that: The clamping mechanism includes a clamp ring, a connecting hole is arranged directly below the clamp ring, a plurality of second electric push rods are evenly connected to the inner wall of the clamp ring along its circumference, a clamp plate is connected to the end of the second electric push rod away from the clamp ring, guide rail grooves are opened along the circumference of the opposite sides of the clamp ring, the guide rail grooves of the two clamp rings are respectively connected to the movable welding table and the fixed welding table through the supporting unit, the outer sides of the two clamp rings are connected to the annular tooth plate along their circumference, and the annular tooth plate is connected to the driving mechanism.

[0009] The support unit comprises a plurality of evenly arranged support wheels, the support wheels are arranged in the guide rail grooves, each support wheel is connected with a support plate, and the plurality of support plates are respectively connected with the movable welding platform and the fixed welding platform.

[0010] The clamping plate is configured as one of an arc-shaped plate and a flat plate.

[0011] The driving mechanism includes a forward and reverse motor, which is connected to the bottom surface of the fixed welding table. The output end of the forward and reverse motor is connected to a connecting component, and the connecting component is respectively connected to two transmission gears. The two transmission gears respectively pass through the connecting holes and mesh with the annular gear plate.

[0012] The connecting assembly includes a support cylinder, which is slidably connected to a support shaft. A limit groove is provided on the inner wall of the support cylinder along its length direction. The shaft body of the support shaft is connected to a limit strip along its length direction. The limit strip matches the limit groove. Both the support cylinder and the support shaft are connected to a fixed plate. The two fixed plates are respectively connected to a fixed welding table and a movable welding table. The support cylinder and the support shaft are connected to two transmission gears one by one. The end of the support shaft away from the support cylinder is connected to the forward and reverse motors.

[0013] The pushing assembly includes a first electric push rod, which is connected to the side wall of the fixed welding table. The end of the first electric push rod away from the fixed welding table is connected to the mobile welding table. The bottom of the mobile welding table is connected with a slide plate along its width direction. The bottom of the fixed welding table is provided with a slide groove along its width direction, and the slide plate matches the slide groove.

[0014] The tabletops of the fixed welding table and the mobile welding table are both connected with telescopic support rods, the ends of the telescopic support rods are connected with support guard plates, the two telescopic support rods are respectively arranged near the edges of the fixed welding table and the mobile welding table, and the two clamp rings are arranged between the two telescopic support rods.

[0015] Another technical solution adopted by the present invention is: The welding method of the high-strength steel pipeline full-angle welding device is specifically implemented according to the following steps: Step 1: Place two high-strength steel pipes to be welded between the clamping plates of two clamp rings respectively; Step 2: Place the pipe bodies of the two high-strength steel pipes on two supporting guard plates respectively, and adjust the two telescopic supporting rods to make the heights of the two high-strength steel pipes consistent; Step 3: The first electric push rod drives the mobile welding table to move so that the ports of the two high-strength steel pipes are aligned for welding; Step 4: Start the forward and reverse motors, which drive the annular gear plate to rotate through two transmission gears, and then drive the two high-strength steel pipes to perform full-angle welding.

[0016] The beneficial effects of the present invention are: The high-strength steel pipe full-angle welding device of the present invention places two high-strength steel pipe workpieces to be welded in two clamp rings, and pushes the clamping plate to squeeze and fix the high-strength steel pipe workpieces by an electric push rod. The two first electric push rods shrink and drive the mobile welding platform to approach the welding platform, driving the high-strength steel pipe workpieces fixed in the two clamp rings to be closely connected, and the transmission gear is connected to the annular tooth plate outside the clamp ring, driving the two clamp rings to rotate, so as to realize the rotation of the high-strength steel pipe workpiece to be welded. In this way, the welding joint of the high-strength steel pipe workpiece can be welded 360 degrees without dead angles during welding. Through this device, not only the welding efficiency of the high-strength steel pipe can be improved, but also the welding quality can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a full-angle welding device for high-strength steel pipelines according to the present invention; Figure 2 This is a diagram showing the use status of the full-angle welding device for high-strength steel pipelines of the present invention; Figure 3 It is a bottom view of the full-angle welding device for high-strength steel pipelines of the present invention; Figure 4 It is a schematic diagram of the connection structure of the movable welding table in the high-strength steel pipeline full-angle welding device of the present invention.

[0018] In the figure: 1. fixed welding table, 2. mobile welding table, 3. first electric push rod, 4. clamp ring, 5. second electric push rod, 6. clamp plate, 7. guide groove, 8. support wheel, 9. support plate, 10. annular gear plate, 11. transmission gear, 12. support cylinder, 13. support shaft, 14. forward and reverse motor, 15. limit strip, 16. connecting hole, 17. telescopic support rod, 18. slide plate, 19. support guard plate, 20. fixed plate. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The present invention provides a high-strength steel pipeline full-angle welding device, such as Figure 1-2 As shown, it includes a fixed welding table 1, the side wall of the fixed welding table 1 is connected to a pushing component, the pushing component is connected to a mobile welding table 2, the table tops of the mobile welding table 2 and the fixed welding table 1 are both connected to a clamping mechanism, the bottom surface of the fixed welding table 1 is connected to a driving mechanism, the table tops of the mobile welding table 2 and the fixed welding table 1 are both provided with connecting holes 16, and the driving mechanism is connected to the clamping mechanism through the connecting holes 16. Two high-strength steel pipes to be welded are clamped in two clamping mechanisms respectively, and the pushing component is used to push the mobile welding table 2 to ensure that the ports of the two pipes are aligned, and then the welding operation can be carried out, and then the clamping mechanism is driven to rotate by the driving mechanism to drive the two pipes to rotate, and the full-angle welding operation can be carried out.

[0021] Example 1 The invention discloses a full-angle welding device for high-strength steel pipelines, comprising a fixed welding platform 1, a side wall of which is connected to a pushing assembly, which is connected to a mobile welding platform 2, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both connected to a clamping mechanism, the bottom surface of the fixed welding platform 1 is connected to a driving mechanism, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both provided with connecting holes 16, and the driving mechanism is connected to the clamping mechanism through the connecting holes 16.

[0022] The clamping mechanism includes a clamp ring 4, a connection hole 16 is arranged directly below the clamp ring 4, the inner wall of the clamp ring 4 is evenly connected with a plurality of second electric push rods 5 along its circumference, the end of the second electric push rod 5 away from the clamp ring 4 is connected with a clamp plate 6, the two opposite sides of the clamp ring 4 are provided with guide rail grooves 7 along its circumference, the guide rail grooves 7 of the two clamp rings 4 are respectively connected to the mobile welding table 2 and the fixed welding table 1 through the support unit, the outer sides of the two clamp rings 4 are connected with an annular tooth plate 10 along their circumference, and the annular tooth plate 10 is connected to the driving mechanism. The inner side wall of each clamp ring 4 is evenly connected with four second electric push rods 5 along its circumference, and the clamp plate 6 is tightly clamped with the pipeline by adjusting the second electric push rod 5, the driving mechanism drives the annular tooth plate 10, drives the clamp ring 4 to rotate, and then drives the pipeline to rotate, and during the rotation of the clamp ring 4, the support unit supports the clamp ring 4.

[0023] Example 2 The invention discloses a full-angle welding device for high-strength steel pipelines, comprising a fixed welding platform 1, a side wall of which is connected to a pushing assembly, which is connected to a mobile welding platform 2, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both connected to a clamping mechanism, the bottom surface of the fixed welding platform 1 is connected to a driving mechanism, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both provided with connecting holes 16, and the driving mechanism is connected to the clamping mechanism through the connecting holes 16.

[0024] The clamping mechanism includes a clamp ring 4, a connecting hole 16 is arranged directly below the clamp ring 4, the inner wall of the clamp ring 4 is evenly connected with a plurality of second electric push rods 5 along its circumference, the end of the second electric push rod 5 away from the clamp ring 4 is connected with a clamping plate 6, and the clamp ring 4 has guide grooves 7 on two opposite side surfaces along its circumference. The guide grooves 7 of the two clamp rings 4 are respectively connected to the movable welding table 2 and the fixed welding table 1 through the supporting units, and the outer sides of the two clamp rings 4 are connected with an annular tooth plate 10 along their circumference, and the annular tooth plate 10 is connected to the driving mechanism.

[0025] The support unit includes a number of evenly arranged support wheels 8, which are arranged in the guide rail groove 7, each support wheel 8 is connected to a support plate 9, and the plurality of support plates 9 are respectively connected to the mobile welding table 2 and the fixed welding table 1. Three support wheels 8 are matched and connected in each guide rail groove 7, and six support wheels 8 are connected to each clamp ring 4. Three support wheels 8 are arranged in the lower half of the clamp ring 4, and one of the support wheels 8 is arranged directly below the clamp ring 4, forming a triangle through the support plate 9. When the clamp ring 4 rotates, the support plate 9 plays a supporting and stabilizing role.

[0026] The clamping plate 6 is configured as an arc plate or a flat plate. The clamping plates 6 have different arc angles. Different clamping plates 6 are selected according to pipes of different sizes to ensure that the clamping plates 6 and the pipes are tightly fitted and clamped.

[0027] Example 3 The invention discloses a full-angle welding device for high-strength steel pipelines, comprising a fixed welding platform 1, a side wall of which is connected to a pushing assembly, which is connected to a mobile welding platform 2, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both connected to a clamping mechanism, the bottom surface of the fixed welding platform 1 is connected to a driving mechanism, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both provided with connecting holes 16, and the driving mechanism is connected to the clamping mechanism through the connecting holes 16.

[0028] The clamping mechanism includes a clamp ring 4, a connecting hole 16 is arranged directly below the clamp ring 4, the inner wall of the clamp ring 4 is evenly connected with a plurality of second electric push rods 5 along its circumference, the end of the second electric push rod 5 away from the clamp ring 4 is connected with a clamping plate 6, and the clamp ring 4 has guide grooves 7 on two opposite side surfaces along its circumference. The guide grooves 7 of the two clamp rings 4 are respectively connected to the movable welding table 2 and the fixed welding table 1 through the supporting units, and the outer sides of the two clamp rings 4 are connected with an annular tooth plate 10 along their circumference, and the annular tooth plate 10 is connected to the driving mechanism.

[0029] The support unit includes a plurality of evenly arranged support wheels 8, which are arranged in the guide rail groove 7, each support wheel 8 is connected to a support plate 9, and the plurality of support plates 9 are respectively connected to the mobile welding table 2 and the fixed welding table 1.

[0030] The clamping plate 6 is configured as a curved plate or a flat plate.

[0031] like Figure 3 As shown, the driving mechanism includes a forward and reverse motor 14, which is connected to the bottom surface of the fixed welding table 1, and the output end of the forward and reverse motor 14 is connected to a connecting assembly, and the connecting assembly is respectively connected to two transmission gears 11, and the two transmission gears 11 respectively pass through the connecting holes 16 and mesh with the annular gear plate 10. The forward and reverse motor 14 serves as a power source, and drives the two transmission gears 11 to rotate through the connecting assembly, and the transmission gears 11 then drive the clamp ring 4 to rotate through the annular gear plate 10.

[0032] The connection assembly includes a support cylinder 12, which is slidably connected to a support shaft 13. The inner wall of the support cylinder 12 is provided with a limit groove along its length direction. The shaft body of the support shaft 13 is connected with a limit strip 15 along its length direction. The limit strip 15 matches the limit groove. The support cylinder 12 and the support shaft 13 are both connected with a fixed plate 20. The two fixed plates 20 are respectively connected to the fixed welding platform 1 and the mobile welding platform 2. The support cylinder 12 and the support shaft 13 are connected to the two transmission gears 11 in a one-to-one correspondence. The end of the support shaft 13 away from the support cylinder 12 is connected to the forward and reverse motor 14. The plate surfaces of the two fixed plates 20 are both provided with round holes. The support cylinder 12 and the support shaft 13 pass through the round holes of the two fixed plates 20 respectively. The forward and reverse motor 14 drives the support shaft 13 to rotate. The limit strip 15 is clamped with the limit groove to ensure that the support shaft 13 drives the support cylinder 12 to rotate, thereby driving the two transmission gears 11 to rotate. When the mobile welding platform 2 moves, the support shaft 13 retracts in the support cylinder 12.

[0033] Example 4 The invention discloses a full-angle welding device for high-strength steel pipelines, comprising a fixed welding platform 1, a side wall of which is connected to a pushing assembly, which is connected to a mobile welding platform 2, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both connected to a clamping mechanism, the bottom surface of the fixed welding platform 1 is connected to a driving mechanism, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both provided with connecting holes 16, and the driving mechanism is connected to the clamping mechanism through the connecting holes 16.

[0034] The clamping mechanism includes a clamp ring 4, a connecting hole 16 is arranged directly below the clamp ring 4, the inner wall of the clamp ring 4 is evenly connected with a plurality of second electric push rods 5 along its circumference, the end of the second electric push rod 5 away from the clamp ring 4 is connected with a clamping plate 6, and the clamp ring 4 has guide grooves 7 on two opposite side surfaces along its circumference. The guide grooves 7 of the two clamp rings 4 are respectively connected to the movable welding table 2 and the fixed welding table 1 through the supporting units, and the outer sides of the two clamp rings 4 are connected with an annular tooth plate 10 along their circumference, and the annular tooth plate 10 is connected to the driving mechanism.

[0035] The support unit includes a plurality of evenly arranged support wheels 8, which are arranged in the guide rail groove 7, each support wheel 8 is connected to a support plate 9, and the plurality of support plates 9 are respectively connected to the mobile welding table 2 and the fixed welding table 1.

[0036] The clamping plate 6 is configured as a curved plate or a flat plate.

[0037] The driving mechanism includes a forward and reverse motor 14, which is connected to the bottom surface of the fixed welding table 1. The output end of the forward and reverse motor 14 is connected to a connecting component, and the connecting component is respectively connected to two transmission gears 11. The two transmission gears 11 respectively pass through the connecting holes 16 and engage with the annular gear plate 10.

[0038] The connecting assembly includes a support cylinder 12, which is slidably connected to a support shaft 13. A limiting groove is provided on the inner wall of the support cylinder 12 along its length direction. The shaft body of the support shaft 13 is connected to a limiting strip 15 along its length direction. The limiting strip 15 matches the limiting groove. The support cylinder 12 and the support shaft 13 are both connected to a fixed plate 20. The two fixed plates 20 are respectively connected to a fixed welding table 1 and a movable welding table 2. The support cylinder 12 and the support shaft 13 are connected to two transmission gears 11 one by one. The end of the support shaft 13 away from the support cylinder 12 is connected to a forward and reverse motor 14.

[0039] The pushing assembly includes a first electric push rod 3, which is connected to the side wall of the fixed welding table 1. The end of the first electric push rod 3 away from the fixed welding table 1 is connected to the mobile welding table 2. The bottom of the mobile welding table 2 is connected with a slide plate 18 along its width direction. The bottom of the fixed welding table 2 is provided with a slide groove along its width direction, and the slide plate 18 matches the slide groove. The first electric push rod 3 is set to two, connected to the two ends of the same side as the fixed welding table 1, and the slide plate 18 is also set to two, respectively arranged near the two sides of the bottom of the mobile welding table 2. When the first electric push rod 3 pushes the mobile welding table 2, the slide plate 18 slides in the slide groove to ensure the stability of the mobile welding table 2 during the movement process.

[0040] Example 5 The invention discloses a full-angle welding device for high-strength steel pipelines, comprising a fixed welding platform 1, a side wall of which is connected to a pushing assembly, which is connected to a mobile welding platform 2, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both connected to a clamping mechanism, the bottom surface of the fixed welding platform 1 is connected to a driving mechanism, the surfaces of the mobile welding platform 2 and the fixed welding platform 1 are both provided with connecting holes 16, and the driving mechanism is connected to the clamping mechanism through the connecting holes 16.

[0041] The clamping mechanism includes a clamp ring 4, a connecting hole 16 is arranged directly below the clamp ring 4, the inner wall of the clamp ring 4 is evenly connected with a plurality of second electric push rods 5 along its circumference, the end of the second electric push rod 5 away from the clamp ring 4 is connected with a clamping plate 6, and the clamp ring 4 has guide grooves 7 on two opposite side surfaces along its circumference. The guide grooves 7 of the two clamp rings 4 are respectively connected to the movable welding table 2 and the fixed welding table 1 through the supporting units, and the outer sides of the two clamp rings 4 are connected with an annular tooth plate 10 along their circumference, and the annular tooth plate 10 is connected to the driving mechanism.

[0042] The support unit includes a plurality of evenly arranged support wheels 8, which are arranged in the guide rail groove 7, each support wheel 8 is connected to a support plate 9, and the plurality of support plates 9 are respectively connected to the mobile welding table 2 and the fixed welding table 1.

[0043] The clamping plate 6 is configured as a curved plate or a flat plate.

[0044] The driving mechanism includes a forward and reverse motor 14, which is connected to the bottom surface of the fixed welding table 1. The output end of the forward and reverse motor 14 is connected to a connecting component, and the connecting component is respectively connected to two transmission gears 11. The two transmission gears 11 respectively pass through the connecting holes 16 and engage with the annular gear plate 10.

[0045] The connecting assembly includes a support cylinder 12, which is slidably connected to a support shaft 13. A limiting groove is provided on the inner wall of the support cylinder 12 along its length direction. The shaft body of the support shaft 13 is connected to a limiting strip 15 along its length direction. The limiting strip 15 matches the limiting groove. The support cylinder 12 and the support shaft 13 are both connected to a fixed plate 20. The two fixed plates 20 are respectively connected to a fixed welding table 1 and a movable welding table 2. The support cylinder 12 and the support shaft 13 are connected to two transmission gears 11 one by one. The end of the support shaft 13 away from the support cylinder 12 is connected to a forward and reverse motor 14.

[0046] The pushing assembly includes a first electric push rod 3, which is connected to the side wall of the fixed welding table 1. The end of the first electric push rod 3 away from the fixed welding table 1 is connected to the mobile welding table 2. The bottom of the mobile welding table 2 is connected with a slide plate 18 along its width direction. The bottom of the fixed welding table 2 is provided with a slide groove along its width direction, and the slide plate 18 matches the slide groove.

[0047] like Figure 4 As shown, the tabletops of the fixed welding table 1 and the mobile welding table 2 are both connected with telescopic support rods 17, the ends of the telescopic support rods 17 are connected with support guard plates 19, the two telescopic support rods 17 are respectively arranged near the edges of the fixed welding table 1 and the mobile welding table 2, and the two clamp rings 4 are arranged between the two telescopic support rods 17. The support guard plate 19 is used to support the pipe to be welded, and the height of the telescopic support rod 17 is adjustable, which is used to adjust the height of the support guard plate 19 to ensure that the ports of the two pipes are aligned.

[0048] Example 6 The welding method of the high-strength steel pipeline full-angle welding device of the present invention is specifically implemented according to the following steps: Step 1: Place two high-strength steel pipes to be welded between the clamping plates 6 of two clamp rings 4 respectively; Step 2: The pipe bodies of the two high-strength steel pipes are placed on two supporting guard plates 19 respectively, and the two telescopic supporting rods 17 are adjusted to make the heights of the two high-strength steel pipes consistent; Step 3: The first electric push rod 3 drives the mobile welding table 2 to move so that the ports of the two high-strength steel pipes are aligned for welding; Step 4: The forward and reverse motors 14 are started, and the annular gear plate 10 is driven to rotate through the two transmission gears 11, thereby driving the two high-strength steel pipes to perform full-angle welding.

[0049] The working principle of the high-strength steel pipeline full-angle welding device of the present invention is as follows: Replace the clamp 6 of a suitable model, place the two high-strength steel pipe workpieces to be welded in the two clamp rings 4, push the clamp 6 through the second electric push rod 5 to squeeze and fix the high-strength steel pipe workpiece, and the support guard plate 19 is used to auxiliary support the welded pipe. The two first electric push rods 3 shrink and drive the mobile welding table 2 to approach the fixed welding table 1, drive the high-strength steel pipe workpieces fixed in the two clamp rings 4 to dock tightly, and under the drive of the forward and reverse motors 14, the two transmission gears 11 rotate under the connection of the support cylinder 12 and the support shaft 13, drive the two clamp rings 4 to rotate, and realize the rotation of the high-strength steel pipe workpiece to be welded, so that the welding joint of the high-strength steel pipe workpiece can be welded 360 degrees without dead angles during welding.

[0050] The high-strength steel pipe full-angle welding device of the present invention places two high-strength steel pipe workpieces to be welded in two clamp rings, and pushes the clamping plate to squeeze and fix the high-strength steel pipe workpieces through the electric push rod. The two first electric push rods shrink and drive the mobile welding platform to approach the welding platform, drive the high-strength steel pipe workpieces fixed in the two clamp rings to be closely connected, and the transmission gear is connected to the annular tooth plate outside the clamp ring, driving the two clamp rings to rotate synchronously, so as to realize the rotation of the high-strength steel pipe workpiece to be welded. In this way, 360-degree non-dead-angle welding operation can be performed on the welding joint of the high-strength steel pipe workpiece during welding.

Claims

1. High-strength steel pipeline full-angle welding device, characterized in that: The invention comprises a fixed welding table (1), the side wall of the fixed welding table (1) is connected to a pushing component, the pushing component is connected to a movable welding table (2), the table tops of the movable welding table (2) and the fixed welding table (1) are both connected to a clamping mechanism, the bottom surface of the fixed welding table (1) is connected to a driving mechanism, the table tops of the movable welding table (2) and the fixed welding table (1) are both provided with a connecting hole (16), and the driving mechanism is connected to the clamping mechanism through the connecting hole (16).

2. The high-strength steel pipeline full-angle welding device according to claim 1 is characterized in that: The clamping mechanism comprises a clamp ring (4), the connecting hole (16) is arranged directly below the clamp ring (4), the inner wall of the clamp ring (4) is evenly connected to a plurality of second electric push rods (5) along its circumference, the ends of the second electric push rods (5) away from the clamp ring (4) are connected to a clamping plate (6), the clamp ring (4) has guide grooves (7) formed on two opposite side surfaces along its circumference, the guide grooves (7) of the two clamp rings (4) are respectively connected to the movable welding table (2) and the fixed welding table (1) through a supporting unit, and the outer sides of the two clamp rings (4) are connected to an annular tooth plate (10) along their circumference, and the annular tooth plate (10) is connected to a driving mechanism.

3. The high-strength steel pipeline full-angle welding device according to claim 2 is characterized in that: The support unit comprises a plurality of evenly arranged support wheels (8), wherein the support wheels (8) are arranged in the guide rail groove (7), each of the support wheels (8) is connected to a support plate (9), and the plurality of support plates (9) are respectively connected to the mobile welding table (2) and the fixed welding table (1).

4. The high-strength steel pipeline full-angle welding device according to claim 2 is characterized in that: The clamping plate (6) is configured as one of an arc-shaped plate and a flat plate.

5. The high-strength steel pipeline full-angle welding device according to claim 1 is characterized in that: The driving mechanism comprises a forward and reverse motor (14), the forward and reverse motor (14) being connected to the bottom surface of the fixed welding table (1), the output end of the forward and reverse motor (14) being connected to a connecting assembly, the connecting assembly being respectively connected to two transmission gears (11), the two transmission gears (11) respectively passing through the connecting holes (16) to mesh with the annular gear plate (10).

6. The high-strength steel pipeline full-angle welding device according to claim 5 is characterized in that: The connection assembly comprises a support cylinder (12), the support cylinder (12) being slidably connected to a support shaft (13), the inner wall of the support cylinder (12) being provided with a limit groove along its length direction, the shaft body of the support shaft (13) being connected to a limit strip (15) along its length direction, the limit strip (15) matching the limit groove, the support cylinder (12) and the support shaft (13) being both connected to a fixed plate (20), the two fixed plates (20) being respectively connected to a fixed welding table (1) and a movable welding table (2), the support cylinder (12) and the support shaft (13) being connected to two transmission gears (11) in a one-to-one correspondence, and the end of the support shaft (13) away from the support cylinder (12) being connected to a forward and reverse motor (14).

7. The high-strength steel pipeline full-angle welding device according to claim 1 is characterized in that: The pushing assembly comprises a first electric push rod (3), the first electric push rod (3) being connected to a side wall of a fixed welding table (1), the end of the first electric push rod (3) away from the fixed welding table (1) being connected to a movable welding table (2), the bottom of the movable welding table (2) being connected to a slide rail plate (18) along its width direction, the bottom of the fixed welding table (2) being provided with a slide groove along its width direction, the slide rail plate (18) matching the slide groove.

8. The high-strength steel pipeline full-angle welding device according to claim 1 is characterized in that: The tabletops of the fixed welding table (1) and the movable welding table (2) are both connected to telescopic support rods (17), the ends of the telescopic support rods (17) are connected to support guard plates (19), the two telescopic support rods (17) are respectively arranged close to the edges of the fixed welding table (1) and the movable welding table (2), and the two clamp rings (4) are arranged between the two telescopic support rods (17).

9. The welding method of the high-strength steel pipeline full-angle welding device according to any one of claims 1 to 8, characterized in that: Follow the steps below to implement it: Step 1: Place two high-strength steel pipes to be welded between the clamping plates (6) of two clamp rings (4) respectively; Step 2: The pipe bodies of the two high-strength steel pipes are respectively placed on two supporting guard plates (19), and the two telescopic supporting rods (17) are adjusted so that the heights of the two high-strength steel pipes are consistent; Step 3: The first electric push rod (3) drives the movable welding table (2) to move so that the ends of the two high-strength steel pipes are aligned for welding; Step 4: The forward and reverse motors (14) are started, and the annular toothed plate (10) is driven to rotate through the two transmission gears (11), thereby driving the two high-strength steel pipes to perform full-angle welding.

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