Auxiliary welding device for buried pipeline

Abstract

The utility model relates to the technical field of pipeline construction, in particular to a buried pipeline welding auxiliary device which comprises an alignment ring, a fixing pipe and an alignment pipe. The plurality of alignment assemblies are uniformly distributed and fixed on the alignment ring; a fixed ruler and an alignment ruler are arranged on the alignment assembly, scales are marked on the fixed ruler and the alignment ruler, calibration teeth are arranged on the sides, close to the scales, of the fixed ruler and the alignment ruler respectively, and the fixed ruler makes contact with the fixed pipe and displays the contact numerical value of the fixed pipe through the calibration teeth; the alignment ruler is in contact with the alignment tube and displays the contact value of the fixed tube through the calibration teeth; driving the alignment pipe to move to adjust the contact value between the alignment pipe and the alignment ruler until the contact value is the same as the contact value between the fixed ruler and the fixed pipe, and aligning the fixed pipe with the alignment pipe; the alignment pipe adjusting assemblies are arranged on the two sides of the alignment pipe and drive the alignment pipe to move and be aligned to the fixing pipe. The device can be used for quickly aligning the positions of the two welded pipes and improving the welding quality.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline construction, in particular to an underground pipeline welding auxiliary device. Background Art

[0002] During municipal construction, it is often necessary to dig up the ground and then lay pipes in the pits. In order to ensure the rapid progress of construction, most of the operations are to lay pipes while welding to ensure the efficiency of the construction.

[0003] However, during the welding process, since most pipes are moved using a sling, it is not easy for the sling to align the two pipe sections before welding. As a result, there are often uneven heights and mismatched axes between the two pipe ends, and manual adjustment is required before welding can be performed. Manual adjustment is extremely inconvenient during operation, and it is not easy to determine whether the two pipes are aligned during adjustment. The alignment effect is not easy to determine by the human eye, so an auxiliary device is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an underground pipeline welding auxiliary device which can easily adjust the axis centers of two pipeline ports and can quickly align them, so as to solve the problems existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following solutions: The utility model provides an underground pipeline welding auxiliary device, comprising:

[0006] An alignment ring is sleeved at the connection between the fixed tube and the alignment tube;

[0007] A plurality of alignment components are provided, which are evenly distributed and fixed on the alignment ring; a fixed ruler and an alignment ruler are provided on the alignment component, scales are marked on the fixed ruler and the alignment ruler, and calibration teeth are respectively provided on the fixed ruler and the alignment ruler near the scales, the fixed ruler contacts the fixed tube and displays the contact value of the fixed tube through the calibration teeth; the alignment ruler contacts the alignment tube and displays the contact value of the fixed tube through the calibration teeth; the alignment tube is driven to move and adjust the contact value between the alignment tube and the alignment ruler until it is the same as the contact value between the fixed ruler and the fixed tube, and the fixed tube is aligned with the alignment tube;

[0008] There are several alignment tube adjustment components, which are arranged on both sides of the alignment tube and drive the alignment tube to move and align with the fixed tube.

[0009] Preferably, the alignment assembly further comprises:

[0010] A fixed column, fixed on the alignment ring;

[0011] A horizontal plate is fixed on the side of the fixed column away from the alignment ring, the fixed ruler and the alignment ruler are slidably connected to the horizontal plate, and one end of the two calibration teeth away from the scale is fixed to the horizontal plate;

[0012] A spring is fixed between the fixed ruler and the transverse plate and between the alignment ruler and the transverse plate.

[0013] Preferably, the alignment ring includes a first half ring and a second half ring, two locking buckles are arranged between the first half ring and the second half ring, and pins are respectively inserted in the two locking buckles; the first half ring and the second half ring are installed and disassembled with each other through the two locking buckles and the pins.

[0014] Preferably, it also includes:

[0015] A movable plate is arranged on a side of the fixed tube away from the ground, an alignment slide rail is fixed on a side of the movable plate close to the fixed tube, and two alignment movable frame sliders are interactively connected on the alignment slide rail;

[0016] A pair of alignment movable frames, one end of the two alignment movable frames is respectively fixed to the first half ring and the second half ring, and the other end of the two alignment movable frames is respectively fixed to the two alignment movable frame sliders; the alignment tube adjustment assembly is slidably connected to the side of the movable plate close to the ground, and the clamping end of the alignment tube adjustment assembly is in contact with the alignment tube.

[0017] Preferably, the alignment tube adjustment assembly comprises:

[0018] A clamping slide rail is fixed on the side of the movable plate close to the ground;

[0019] A pair of clamping movable frames, slidably connected to the clamping slide rails, and an alignment tube lifting assembly is provided at the contact end between the clamping movable frames and the alignment tube;

[0020] The clamping cylinder is fixed on the clamping slide rail, and the movable end of the clamping cylinder is fixed to the clamping movable frame.

[0021] Preferably, the alignment tube lifting assembly comprises:

[0022] A loading plate, one side of which is fixed to the clamping movable frame;

[0023] a fixed roller, one end of which is in contact with the carrier plate and the other end of which is in contact with the alignment tube;

[0024] A lifting cylinder is fixed on the carrier plate, and a lifting roller is fixed on the movable end thereof, and the other end of the lifting roller is in contact with the alignment tube.

[0025] Preferably, the movable plate is further provided with a plurality of lifting components, and the lifting components include:

[0026] A pair of lifting plates are arranged on both sides of the movable plate, a supporting transverse plate is fixed between each of the lifting plates, and each two adjacent supporting transverse plates are fixed by a fixed connecting plate;

[0027] A lifting motor is fixed on the end of the lifting plate away from the ground, a lifting roller is fixed to the driving end of the lifting motor, a steel cable is wound around the lifting roller, and a lifting hook is fixed to the other end of the steel cable;

[0028] A lifting buckle is fixed to the side of the movable plate away from the ground and is fixedly connected to the lifting hook;

[0029] The moving wheel is arranged on a side of the lifting plate away from the lifting buckle.

[0030] Preferably, connecting columns are fixed on several of the horizontal plates between the two calibration teeth, and a welding gun moving ring is fixed to one end of several of the connecting columns away from the horizontal plate; the welding gun moving ring includes a first welding gun moving ring and a second welding gun moving ring, and the first welding gun moving ring and the second welding gun moving ring together form a complete welding gun moving ring; the welding gun moving ring is interactively connected with a welding gun seat, and the welding gun seat fixes the welding gun on the side away from the welding gun moving ring.

[0031] The utility model discloses the following technical effects:

[0032] The utility model can align the fixed pipe and the aligning pipe before welding through the aligning component. At the same time, during the alignment operation of the fixed pipe and the aligning pipe, the position difference of the pipe bodies of the fixed pipe and the aligning pipe to be welded can be visualized through the fixed ruler and the aligning ruler, and the aligning pipe can be adjusted toward the fixed pipe according to the actual data of the fixed ruler and the aligning ruler, and the position of the aligning pipe can be adjusted according to the actual data through the adjusting component, so that the two pipes can be adjusted quickly and accurately, the adjustment efficiency can be accelerated to a certain extent, and the welding quality of subsequent welding operations can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 2 for Figure 1 Schematic diagram of the structure of part A;

[0036] Figure 3 It is a schematic diagram of the position relationship between the lifting assembly and the movable plate;

[0037] Figure 4 for Figure 3 Schematic diagram of the structure of part B;

[0038] Figure 5 It is a schematic diagram of the position relationship between the clamping slide rail and the movable plate;

[0039] Figure 6 It is a schematic diagram of the position relationship between the alignment slide rail and the movable plate;

[0040] Among them, 1. fixed pipe; 2. alignment pipe; 3. pipe base; 4. alignment assembly; 5. alignment moving frame; 6. moving plate; 7. lifting assembly; 8. clamping moving frame; 9. moving wheel; 10. first half ring; 11. second half ring; 12. fixed column; 13. fixed ruler; 14. welding gun; 15. spring; 16. horizontal plate; 17. alignment ruler; 18. pin shaft; 19. welding gun seat; 20. first welding gun moving ring; 21. alignment pipe lifting assembly 1. Parts; 22. Guide rails; 23. Clamping cylinder; 24. Fixed roller; 25. Lifting roller; 26. Lifting cylinder; 27. Lifting motor; 28. Lifting roller; 29. ​​Steel cable; 30. Lifting buckle; 31. Lifting hook; 32. Second welding gun moving ring; 33. Lifting plate; 34. Calibration tooth; 35. Alignment moving frame slider; 36. Alignment slide rail; 37. Clamping slide rail; 38. Loading plate; 39. Support cross plate; 40. Fixed connecting plate. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Reference Figure 1-Figure 6The utility model discloses an underground pipeline welding auxiliary device, comprising: an alignment ring, which is sleeved at the connection between the fixed pipe 1 and the alignment pipe 2; an alignment component 4, which is provided with a plurality of them, which are evenly distributed and fixed on the alignment ring; a fixed ruler 13 and an alignment ruler 17 are provided on the alignment component 4, and scales are marked on the fixed ruler 13 and the alignment ruler 17, and calibration teeth 34 are respectively provided on the fixed ruler 13 and the alignment ruler 17 near the scale. The fixed ruler 13 contacts the fixed pipe 1 and displays the contact value of the fixed pipe 1 through the calibration teeth 34; the alignment ruler 17 contacts the alignment pipe 2 and displays the contact value of the fixed pipe 1 through the calibration teeth 34; the alignment pipe 2 is driven to move and adjust the contact value between the alignment pipe 2 and the alignment ruler 17 until it is the same as the contact value between the fixed ruler 13 and the fixed pipe 1, and the fixed pipe 1 is aligned with the alignment pipe 2; an alignment pipe adjustment component is provided with a plurality of them, which are arranged on both sides of the alignment pipe 2, and drive the alignment pipe 2 to move and align with the fixed pipe 1.

[0044] The alignment components 4 are preferably but not limited to being eight in number and are located at relative positions.

[0045] The device can align the fixed tube 1 and the alignment tube 2 before welding through the alignment component 4. At the same time, during the alignment operation of the fixed tube 1 and the alignment tube 2, the position difference between the two welded tube bodies of the fixed tube 1 and the alignment tube 2 can be visualized through the fixed ruler 13 and the alignment ruler 17, and the alignment tube 2 can be adjusted toward the fixed tube 1 according to the actual data of the fixed ruler 13 and the alignment ruler 17, and the position of the alignment tube 2 can be adjusted according to the actual data through the adjustment component, so that the two tubes can be adjusted quickly and accurately, the adjustment efficiency can be accelerated to a certain extent, and the welding quality of subsequent welding operations can be improved.

[0046] A further optimized solution is that the alignment assembly 4 also includes: a fixed column 12, fixed on the alignment ring; a cross plate 16, fixed on the side of the fixed column 12 away from the alignment ring, the fixed ruler 13 and the alignment ruler 17 are slidably connected to the cross plate 16, and the two calibration teeth 34 are fixed to the cross plate 16 at one end away from the scale; a spring 15, fixed between the fixed ruler 13 and the cross plate 16 and between the alignment ruler 17 and the cross plate 16.

[0047] Specifically, when performing the alignment operation, the alignment tube 2 is inserted into the end of the alignment component 4 with the alignment ruler 17, moved to the fixed tube 1, lowered to the corresponding height of the fixed tube 1, and the overall device is driven to insert the fixed tube 1 into the end of the alignment component 4 with the fixed ruler 13. It should be noted that the diameter of the circle enclosed by the plurality of fixed rulers 13 must be smaller than the outermost diameter of the fixed tube 1. When the fixed tube 1 is inserted into the end of the alignment component 4 with the fixed ruler 13, the circle enclosed by the plurality of fixed rulers 13 is stretched open under the action of the spring 15, and the scale on the fixed ruler 13 changes due to the stretching of the fixed tube 1. Finally, the scale on the fixed ruler 13 stays at a value at a certain display position under the position shielding of the calibration tooth 34. The position of the alignment tube 2 can be adjusted according to the actual data of the plurality of fixed rulers 13. At the same time, the value of the alignment ruler 17 changes accordingly when the position of the alignment tube 2 changes. When the value of the alignment ruler 17 is equal to the value of the corresponding fixed ruler 13, the alignment between the fixed tube 1 and the alignment tube 2 is completed.

[0048] A further optimized solution is that the alignment ring includes a first half ring 10 and a second half ring 11, two locking buckles are arranged between the first half ring 10 and the second half ring 11, and pins 18 are respectively inserted in the two locking buckles; the first half ring 10 and the second half ring 11 are installed and disassembled with each other through the two locking buckles and the pins 18.

[0049] Specifically, before the alignment operation is performed, the first half ring 10 and the second half ring 11 are in a separated state. When the device clamps the alignment tube 2, the two locking buckles of the first half ring 10 and the second half ring 11 are locked by the pin 18. At this time, the first half ring 10 and the second half ring 11 are combined into a complete circular ring, and a plurality of alignment rulers 17 surround the alignment tube 2. Similarly, the diameter of the circle formed by the plurality of alignment rulers 17 must be smaller than the outermost diameter of the alignment tube 2. When the alignment tube 2 is located in the end of the alignment assembly 4 with the alignment ruler 17, under the action of the spring 15, the circle formed by the plurality of alignment rulers 17 is expanded, and at the same time, the scale on the alignment ruler 17 will change due to the expansion of the alignment tube 2.

[0050] A further optimization scheme also includes: a movable plate 6, which is arranged on the side of the fixed tube 1 away from the ground, and an alignment slide rail 36 is fixed on the side of the movable plate 6 close to the fixed tube 1, and two alignment movable frame sliders 35 are interactively connected on the alignment slide rail 36; a pair of alignment movable frames 5, one end of the two alignment movable frames 5 are respectively fixed to the first half ring 10 and the second half ring 11, and the two alignment movable frames 5 are respectively fixed to the two alignment movable frame sliders 35 away from the other end; an alignment tube adjustment assembly is slidably connected to the side of the movable plate 6 close to the ground, and the clamping end of the alignment tube 2 adjustment assembly is in contact with the alignment tube 2.

[0051] The length of the movable plate 6 and the actual number of the alignment tube adjustment components are set according to the actual length of the alignment tube 2 to ensure that the alignment tube 2 does not tilt during the alignment operation.

[0052] A further optimized solution is provided, in which the adjustment assembly of the alignment tube 2 includes: a clamping rail 37, fixed on the side of the movable plate 6 close to the ground; a pair of clamping movable frames 8, slidably connected to the clamping rail 37, and an alignment tube lifting assembly 21 is provided at the contact end of the clamping movable frame 8 and the alignment tube 2; a clamping cylinder 23, fixed on the clamping rail 37, and the movable end of the clamping cylinder 23 is fixed to the clamping movable frame 8.

[0053] Specifically, when adjusting the position of the alignment tube 2 , the left and right positions of the alignment tube 2 can be adjusted by adjusting the extension amounts of the movable ends of the two clamping cylinders 23 .

[0054] A further optimized solution is that the alignment tube lifting assembly 21 includes: a carrier plate 38, one side of which is fixed to the clamping movable frame 8; a fixed roller 24, one end of which is connected to the carrier plate 38 and the other end is in contact with the alignment tube 2; a lifting cylinder 26, which is fixed on the carrier plate 38 and has a lifting roller 25 fixed on its movable end, and the other end of the lifting roller 25 is in contact with the alignment tube 2.

[0055] The vertical position can be adjusted by two driving lifting cylinders 26 to adjust the positions of the two lifting rollers, so as to fine-tune the alignment tube 2 in the vertical direction.

[0056] A further optimized solution is that a plurality of lifting components 7 are also provided on the movable plate 6, and the lifting components 7 include: a pair of lifting plates 33, which are arranged on both sides of the movable plate 6, and a supporting cross plate 39 is fixed between each lifting plate 33, and each adjacent supporting cross plates 39 are fixed by a fixed connecting plate 40; a lifting motor 27, which is fixed to the end of the lifting plate 33 away from the ground, and a lifting roller 28 is fixed to the driving end of the lifting motor 27, and a steel cable 29 is wound around the lifting roller 28, and a lifting hook 31 is fixed to the other end of the steel cable 29; a lifting buckle 30, which is fixed to the side of the movable plate 6 away from the ground and fixedly connected to the lifting hook 31; a moving wheel 9, which is arranged on the side of the lifting plate 33 away from the lifting buckle 30.

[0057] In order to ensure smooth up and down movement of the movable plate 6, a guide rail 22 should be fixed to the lifting plate 33 on one side close to the movable plate 6, and a corresponding lifting buckle 30 is provided with a slot close to the lifting plate 33, and the slot is adapted to the guide rail 22. During the up and down movement of the movable plate 6, the slot is limited by the guide rail 22, so that the movable plate 6 will not produce horizontal displacement during the up and down movement.

[0058] A further optimized solution is that connecting columns are fixed on several horizontal plates 16 between the two calibration teeth 34, and a welding gun 14 moving ring is fixed to one end of several connecting columns away from the horizontal plate 16; the welding gun 14 moving ring includes a first welding gun moving ring 20 and a second welding gun moving ring 32, and the first welding gun moving ring 20 and the second welding gun moving ring 32 together form a complete welding gun 14 moving ring; the welding gun 14 moving ring is interactively connected with a welding gun seat 19, and the welding gun seat 19 fixes the welding gun 14 on the side away from the welding gun 14 moving ring.

[0059] Among them, the same as the first half ring 10 and the second half ring 11, when aligned, the first welding gun moving ring 20 and the second welding gun moving ring 32 are combined into a complete circle. During welding, the operator can directly move the welding gun seat 19 to make the welding gun 14 slide on the first welding gun moving ring 20 and the second welding gun moving ring 32, which can facilitate the operator to perform welding operations and improve welding efficiency to a certain extent.

[0060] Working process: drive the moving wheel 9 to clamp the alignment tube 2 between several clamping moving frames 8, and at the same time insert the alignment tube 2 into the end of the alignment component 4 with the alignment ruler 17, move it to the fixed tube 1, lower the alignment tube 2 to the corresponding height of the fixed tube 1, drive the whole device and insert the fixed tube 1 into the end of the alignment component 4 with the fixed ruler 13. It should be noted that the diameter of the circle enclosed by several fixed rulers 13 must be smaller than the outermost diameter of the fixed tube 1. When the fixed tube 1 is inserted into the end of the alignment component 4 with the fixed ruler 13, under the action of the spring 15, the circle enclosed by several fixed rulers 13 is expanded, and the scale on the fixed ruler 13 will change due to the expansion of the fixed tube 1. Finally, the scale on the fixed ruler 13 is at the position of the calibration tooth 34. When the fixed tube 1 and the alignment tube 2 are blocked and stay at a certain displayed position, the fixed ruler 13 is relatively fixed on the horizontal plate 16. Because the fixed tube 1 and the alignment tube 2 are not aligned, the corresponding fixed ruler 13 and alignment ruler 17 on the same horizontal plate 16 have different values. At this time, the value of the alignment ruler 17 can be adjusted by adjusting the position of the alignment tube 2. When the value of the alignment ruler 17 is equal to the value of the corresponding fixed ruler 13, the fixed tube 1 and the alignment tube 2 are aligned. When adjusting the position of the alignment tube 2, the left and right positions of the alignment tube 2 can be adjusted by adjusting the extension of the movable ends of the two clamping cylinders 23. The vertical position can be adjusted by adjusting the positions of the two jacking rollers through the two driving jacking cylinders 26 to fine-tune the alignment tube 2 in the vertical direction.

[0061] When the values ​​of all the alignment rulers 17 are equal to the values ​​of the corresponding fixed rulers 13, the welding of the fixed pipe 1 and the alignment pipe 2 can be carried out. During welding, the fixed pipe 1 and the alignment pipe 2 can be welded by the moving ring of the welding gun, which makes the welding work easier; after welding, the pin shaft 18 is manually disassembled and the first half ring 10 and the second half ring 11 are manually pulled apart, and the clamping cylinder 23 is driven to separate, so that the two clamping moving frames 8 are separated, and the lifting motor 27 is driven to make the lifting roller 28 wrap around the steel cable 29 to lift the moving plate 6; at this point, the welding of this section of the pipeline is completed, and when welding the next section of the pipeline, the above alignment and adjustment steps can be repeated.

[0062] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0063] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A buried pipeline welding auxiliary device, characterized in that: include: An alignment ring is sleeved at the connection between the fixed tube (1) and the alignment tube (2); A plurality of alignment components (4) are provided, which are evenly distributed and fixed on the alignment ring; a fixed ruler (13) and an alignment ruler (17) are provided on the alignment component (4); scales are marked on the fixed ruler (13) and the alignment ruler (17); calibration teeth (34) are provided on the fixed ruler (13) and the alignment ruler (17) near the scales; the fixed ruler (13) contacts the fixed tube (1) and displays the contact value of the fixed tube (1) through the calibration teeth (34); the alignment ruler (17) contacts the alignment tube (2) and displays the contact value of the fixed tube (1) through the calibration teeth (34); the alignment tube (2) is driven to move and adjust the contact value between the alignment tube (2) and the alignment ruler (17) until the contact value between the fixed ruler (13) and the fixed tube (1) is the same as the contact value between the fixed ruler (13) and the fixed tube (1), and the fixed tube (1) is aligned with the alignment tube (2); There are a plurality of alignment tube (2) adjustment components, which are arranged on both sides of the alignment tube (2) and drive the alignment tube (2) to move and align with the fixed tube (1).

2. The buried pipeline welding auxiliary device according to claim 1, characterized in that: The alignment assembly (4) further comprises: A fixed column (12), fixed on the alignment ring; A transverse plate (16) is fixed on a side of the fixed column (12) away from the alignment ring, the fixed ruler (13) and the alignment ruler (17) are slidably connected to the transverse plate (16), and the ends of the two calibration teeth (34) away from the scale are fixed to the transverse plate (16); A spring (15) is fixed between the fixed ruler (13) and the transverse plate (16) and between the alignment ruler (17) and the transverse plate (16).

3. The buried pipeline welding auxiliary device according to claim 1, characterized in that: The alignment ring comprises a first half ring (10) and a second half ring (11), two locking buckles are arranged between the first half ring (10) and the second half ring (11), and pins (18) are respectively inserted in the two locking buckles; the first half ring (10) and the second half ring (11) are installed and disassembled with each other through the two locking buckles and the pins (18).

4. The buried pipeline welding auxiliary device according to claim 3, characterized in that: Also includes: A movable plate (6) is arranged on a side of the fixed tube (1) away from the ground, an alignment slide rail (36) is fixed on a side of the movable plate (6) close to the fixed tube (1), and two alignment movable frame sliders (35) are interactively connected to the alignment slide rail (36); A pair of alignment movable frames (5), one end of the two alignment movable frames (5) is respectively fixed to the first half ring (10) and the second half ring (11), and the other end of the two alignment movable frames (5) is respectively fixed to the two alignment movable frame sliders (35); the alignment tube (2) adjustment component is slidably connected to the side of the movable plate (6) close to the ground, and the clamping end of the alignment tube (2) adjustment component is in contact with the alignment tube (2).

5. The buried pipeline welding auxiliary device according to claim 4, characterized in that: The alignment tube (2) adjustment assembly comprises: A clamping slide rail (37) fixed on a side of the movable plate (6) close to the ground; A pair of clamping movable frames (8) are slidably connected to the clamping slide rail (37), and the contact ends of the clamping movable frames (8) and the alignment tube (2) are provided with alignment tube lifting assemblies (21); The clamping cylinder (23) is fixed on the clamping slide rail (37), and the movable end of the clamping cylinder (23) is fixed to the clamping movable frame (8).

6. The buried pipeline welding auxiliary device according to claim 5, characterized in that: The alignment tube lifting assembly (21) comprises: A loading plate (38), one side of which is fixed to the clamping movable frame (8); a fixed roller (24), one end of which is in contact with the carrier plate (38) and the other end of which is in contact with the alignment tube (2); A lifting cylinder (26) is fixed on the carrier plate (38), and a lifting roller (25) is fixed on the movable end, and the other end of the lifting roller (25) is in contact with the alignment tube (2).

7. The buried pipeline welding auxiliary device according to claim 4, characterized in that: The movable plate (6) is also provided with a plurality of lifting components (7), and the lifting components (7) include: A pair of lifting plates (33) are arranged on both sides of the movable plate (6), a supporting transverse plate (39) is fixed between each of the lifting plates (33), and each two adjacent supporting transverse plates (39) are fixed by a fixed connecting plate (40); A lifting motor (27) is fixed on one end of the lifting plate (33) away from the ground, a lifting roller (28) is fixed on the driving end of the lifting motor (27), a steel cable (29) is wound around the lifting roller (28), and a lifting hook (31) is fixed on the other end of the steel cable (29); A lifting buckle (30) is fixed to the side of the movable plate (6) away from the ground and is fixedly connected to the lifting hook (31); The moving wheel (9) is arranged on a side of the lifting plate (33) away from the lifting buckle (30).

8. The buried pipeline welding auxiliary device according to claim 2, characterized in that: Connecting columns are fixed on a plurality of the transverse plates (16) between the two calibration teeth (34), and a welding gun (14) moving ring is fixed on one end of the plurality of connecting columns away from the transverse plate (16); the welding gun (14) moving ring comprises a first welding gun moving ring (20) and a second welding gun moving ring (32), and the first welding gun moving ring (20) and the second welding gun moving ring (32) together form a complete welding gun (14) moving ring; the welding gun (14) moving ring is interactively connected with a welding gun seat (19), and the welding gun seat (19) fixes the welding gun (14) on the side away from the welding gun (14) moving ring.

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