Portable laser welding device for drainage pipeline maintenance

Abstract

The invention discloses a portable laser welding device for drainage pipeline maintenance. The portable laser welding device comprises a storage box, a lifting structure and a laser welding assembly. A second air cylinder drives an assembling seat to move downwards, the assembling seat drives a welding seat to move downwards, a uniform motor drives a transmission rod to rotate, the transmission rod drives a gear to rotate, the gear is meshed with a gear ring, the gear ring drives a T-shaped ring to rotate, and then a positioning seat is driven to rotate, so that two butted drainage pipelines rotate in the same direction at a constant speed; the welding position is heated and preheated through the electromagnetic heating piece, the cooling rate is reduced, the hydrogen embrittlement risk is reduced, argon is conveyed through the pump body like the jet head after preheating, the argon environment is formed at the welding position, welding work is conducted through the laser welding head, the circumference of a weld joint is welded at a constant speed along with constant-speed rotation of the butted drainage pipeline, and the welding quality is improved. The labor cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewer maintenance, in particular to a portable laser welding device for sewer maintenance. BACKGROUND

[0002] Sewer is a pipe system for draining waste water, rainwater and other liquids inside buildings or on land. The size range of sewer is wide, including both small pipes and large pipes. Small pipes (DN ≤ 300mm) are applied to internal drainage of buildings, and medium pipes (300mm ≤ DN ≤ 1000mm) are applied to municipal sewer main pipes and rainwater collection pipes.

[0003] A welding device for sewer is disclosed in Chinese patent No. CN117773401A, which comprises a base, a fixing mechanism, a welding mechanism and a heating mechanism. The fixing mechanism comprises a mounting plate fixedly installed on the side wall of the base. A circular hole is formed through the side wall of the mounting plate. A pipe clamp is fixedly installed on the side of the mounting plate close to the base, and the pipe clamp is aligned with the circular hole and has the same diameter. The welding mechanism comprises a fuel tank and a welding gun. The pipe is preheated and post-weld heat treated by the installed electric coil. The electromagnetic induction principle is used to convert electrical energy into heat energy, achieving fast and uniform heating effect. Preheating the pipe can reduce the risk of hydrogen-induced cold brittleness and improve the cold brittleness toughness of the weld. Heating the welded area can help release the residual stress generated during the pipe welding process, reducing the risk of deformation and cracking in the welded area.

[0004] The device in the above-mentioned patent has a large volume and is not convenient to move. The existing portable laser welding device is usually a laser welding gun. When laser welding is performed on small and medium-sized pipes, two workers need to manually weld around the pipe weld joint for one round, which requires a lot of manpower, is time-consuming and laborious, and the welding force is difficult to control, resulting in uneven welding. SUMMARY

[0005] The present application provides a portable laser welding device for sewer maintenance, which solves the problems of large volume, inconvenient movement, low portability, and uneven welding of the existing portable laser welding device, which is usually a laser welding gun. When laser welding is performed on small and medium-sized pipes, two workers need to manually weld around the pipe weld joint for one round, which requires a lot of manpower, is time-consuming and laborious, and the welding force is difficult to control, resulting in uneven welding.

[0006] The present application solves the above technical problems by the following technical solutions. The present application comprises:

[0007] The utility model provides a storage box, the bottom of storage box is equipped with storage groove, the top of storage box is equipped with placing groove, the inside of storage groove is equipped with storage structure, the bottom of storage structure is equipped with universal wheel,

[0008] Lifting structure is equipped in the inside of placing groove, lifting structure includes lifting piece on the inside wall of storage box and lifting plate on the side of lifting piece,

[0009] Laser welding assembly is equipped on the top of lifting structure, and laser welding assembly is used for uniform welding of drainage pipeline,

[0010] Laser welding assembly includes mounting bracket welded on the top of lifting plate, auxiliary frame welded on the side of mounting bracket, positioning structure on the inside wall of mounting bracket, uniform structure on the inside wall of auxiliary frame and laser welding structure on the top of mounting bracket.

[0011] Preferably, the side of the mounting bracket is provided with a pipeline hole, and the inside wall of the mounting bracket is provided with a T-shaped ring groove, the positioning structure includes a T-shaped ring slidingly connected in the T-shaped ring groove, a positioning seat fixedly welded on one side of the T-shaped ring, and a positioning piece mounted on the positioning seat.

[0012] Preferably, the positioning piece includes a first air cylinder mounted on the outside wall of the positioning seat by bolts, a clamping plate fixedly mounted on the output shaft of the first air cylinder, and an elastic pad mounted on the inside wall of the clamping plate.

[0013] Preferably, the uniform structure includes a uniform motor mounted on the outside wall of the auxiliary frame by bolts, a transmission rod fixedly mounted on the output shaft of the uniform motor at both ends and rotatably mounted on the inside wall of the auxiliary frame, a gear fixedly sleeved on the outside of the transmission rod, and a gear ring fixedly sleeved on the outside of the T-shaped ring, the gear and the gear ring are engaged.

[0014] Preferably, the laser welding structure includes a second air cylinder mounted on the top of the mounting bracket by bolts, an assembly seat fixedly mounted on the output shaft of the second air cylinder, a laser welding piece mounted on the bottom of the assembly seat, and an assembly piece mounted in the inside of the assembly seat.

[0015] Preferably, the laser welding piece includes a welding seat, a laser welding head mounted on the bottom of the welding seat, a heating plate and an atmosphere plate mounted on the bottom of the welding seat, an electromagnetic heating sheet mounted on one side of the heating plate, a gas jet head mounted in the inside of the atmosphere plate, an argon gas tank mounted on the top of the lifting plate, and a gas pump mounted on the top of the argon gas tank by bolts, the gas pump is communicated with the connecting pipe on the outside wall of the atmosphere plate through a hose.

[0016] Preferably, the assembling seat is provided with an assembling groove in the bottom, a reset groove is formed in one side of the assembling groove, the assembling part comprises a reset plate welded on the inner wall of the reset groove by a reset spring, an assembling column and a limiting column fixedly welded on one side of the reset plate, and an assembling block fixedly welded on the top of the welding seat, a limiting hole is formed in the assembling block, the assembling block is matched with the assembling groove, and the limiting column is matched with the limiting hole.

[0017] Preferably, a guide groove is formed in the inner wall of the accommodating groove, the accommodating structure comprises a third air cylinder installed on the top wall of the accommodating groove by bolts, an accommodating plate fixedly installed on the output shaft of the third air cylinder, and a guide block fixedly welded on one side of the accommodating plate, the guide block is slidingly connected in the guide groove, and the universal wheel is installed on the bottom of the accommodating plate.

[0018] Preferably, a lifting cavity and a lifting groove are formed in the inner wall of the placing groove, the lifting part comprises a lifting motor installed in the lifting cavity by bolts, threaded rods rotatably installed on the top wall of the lifting groove at both ends and fixedly installed on the output shaft of the lifting motor, a threaded ring threadedly engaged with the threaded rods, and a threaded block fixedly welded on one side of the threaded ring, and the lifting plate is fixedly welded on one side of the threaded block.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] The second air cylinder drives the assembling seat to move downward, the assembling seat drives the welding seat to move downward, the uniform motor drives the transmission rod to rotate, the transmission rod drives the gear to rotate, the gear is engaged with the gear ring, the gear ring drives the T-shaped ring to rotate, thereby driving the positioning seat to rotate, so that the two butt-jointed drainage pipes rotate at a uniform speed in the same direction, the welding part is heated by the electromagnetic heating sheet, preheating treatment is performed, the cooling rate is reduced, the risk of hydrogen embrittlement is reduced, after preheating, the pump body delivers argon like a jet head, an argon environment is formed at the welding part, welding work is performed by the laser welding head, with the uniform rotation of the butt-jointed pipes, the welding seam is welded at a uniform speed, the welding quality is improved, and the labor cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional structure schematic diagram of the present application;

[0022] Figure 2 It is a three-dimensional structure schematic diagram of the present application from the top;

[0023] Figure 3 It is a three-dimensional structure schematic diagram of the present application in which the storage box is removed;

[0024] Figure 4 It is a three-dimensional structure schematic diagram of the present application in which the positioning structure and the uniform structure are shown.

[0025] Figure 5 The schematic diagram of the three-dimensional structure of the positioning structure and the uniform structure in the application is split;

[0026] Figure 6 The schematic diagram of the three-dimensional structure of the laser welding structure in the application is split;

[0027] Figure 7 The schematic diagram of the three-dimensional structure of the laser welding structure in the application is split;

[0028] Figure 8 The schematic diagram of the three-dimensional structure of the laser welding structure in the application is split;

[0029] Figure 9 The schematic diagram of the three-dimensional structure of the laser welding structure in the application is split;

[0030] The numbers in the figure represent:

[0031] 1, storage box;

[0032] 2, storage structure; 201, third cylinder; 202, storage plate; 203, guide block;

[0033] 3, universal wheel;

[0034] 4, lifting structure; 401, lifting piece; 402, lifting plate;

[0035] 5, laser welding assembly; 501, mounting frame; 502, auxiliary frame; 503, positioning structure; 5031, T-shaped ring; 5032, positioning seat; 5033, positioning piece; 504, uniform structure; 5041, uniform motor; 5042, transmission rod; 5043, gear; 5044, gear ring; 505, laser welding structure; 5051, second cylinder; 5052, assembling seat; 5053, laser welding piece; 5054, assembling piece;

[0036] 6, pipe hole;

[0037] 7, first cylinder; 8, clamping plate; 9, elastic pad;

[0038] 10, welding seat; 11, laser welding head; 12, heating plate; 13, atmosphere plate; 14, electromagnetic heating sheet; 15, air jet head; 16, argon tank; 17, air pump;

[0039] 18, return spring; 19, return plate; 20, assembling column; 21, limiting column; 22, assembling block;

[0040] 23, limiting hole;

[0041] 24, lifting motor; 25, threaded rod; 26, threaded ring; 27, threaded block. DETAILED DESCRIPTION

[0042] The above and other technical features and advantages of the present application will be more apparent from the following detailed description.

[0043] The embodiment provides a technical scheme: a portable laser welding device for sewer pipe maintenance, as shown in the figure, comprising a storage box 1, a lifting structure 4 and a laser welding assembly 5. Figures 1-9

[0044] The bottom of the storage box 1 is provided with a storage groove, and the top of the storage box 1 is provided with a placing groove. The inside of the storage groove is provided with a storage structure 2. The bottom of the storage structure 2 is provided with a universal wheel 3.

[0045] A guide groove is formed on the inner side wall of the storage groove. The storage structure 2 comprises a third air cylinder 201 mounted on the bottom of the inner top wall of the storage groove through bolts, a storage plate 202 fixedly installed on the output shaft of the third air cylinder 201, and a guide block 203 fixedly welded on one side of the storage plate 202. The guide block 203 is slidingly connected inside the guide groove. The universal wheel 3 is installed at the bottom of the storage plate 202.

[0046] The lifting structure 4 is installed inside the placing groove. The lifting structure 4 comprises a lifting piece 401 installed on the inner side wall of the storage box 1 and a lifting plate 402 installed on one side of the lifting piece 401.

[0047] A lifting cavity and a lifting groove are formed on the inner side wall of the placing groove. The lifting piece 401 comprises a lifting motor 24 installed inside the lifting cavity through bolts, a threaded rod 25 rotatably installed at both ends of the inner top wall of the lifting groove and fixedly installed on the output shaft of the lifting motor 24, a threaded ring 26 sleeved on the threaded rod 25 in a threaded manner, and a threaded block 27 fixedly welded on one side of the threaded ring 26. The lifting plate 402 is fixedly welded on one side of the threaded block 27.

[0048] In a specific implementation, the laser welding assembly 5 is installed on the top of the lifting structure 4. The laser welding assembly 5 is used for uniform welding of the sewer pipe.

[0049] The laser welding assembly 5 comprises a mounting frame 501 fixedly welded on the top of the lifting plate 402, an auxiliary frame 502 fixedly welded on one side of the mounting frame 501, a positioning structure 503 installed on the inner side wall of the mounting frame 501, a uniform structure 504 installed on the inner side wall of the auxiliary frame 502, and a laser welding structure 505 installed on the top of the mounting frame 501.

[0050] ​Further, the mounting frame 501 is provided with a pipeline hole 6 on one side, and a T-shaped ring 5031 slot is formed on the inner side wall of the mounting frame 501. The positioning structure 503 comprises a T-shaped ring 5031 slidably connected in the T-shaped ring 5031 slot, a positioning seat 5032 fixedly welded on one side of the T-shaped ring 5031, and a positioning piece 5033 arranged on the positioning seat 5032. The positioning piece 5033 comprises a first air cylinder 7 mounted on the outer side wall of the positioning seat 5032 through bolts, a clamping plate 8 fixedly arranged on the output shaft of the first air cylinder 7, and an elastic pad 9 arranged on the inner side wall of the clamping plate 8.

[0051] Further, the uniform structure 504 comprises a uniform motor 5041 mounted on the outer side wall of the auxiliary frame 502 through bolts, a transmission rod 5042 fixedly arranged at both ends of the output shaft of the uniform motor 5041 and rotatably mounted on the inner side wall of the auxiliary frame 502, a gear 5043 fixedly sleeved on the outer side of the transmission rod 5042, and a tooth ring 5044 fixedly sleeved on the outer side of the T-shaped ring 5031. The gear 5043 is engaged with the tooth ring 5044.

[0052] Further, the laser welding structure 505 comprises a second air cylinder 5051 mounted on the top of the mounting frame 501 through bolts, an assembly seat 5052 fixedly arranged on the output shaft of the second air cylinder 5051, a laser welding piece 5053 arranged on the bottom of the assembly seat 5052, and an assembly piece 5054 arranged in the assembly seat 5052.

[0053] Further, the laser welding piece 5053 comprises a welding seat 10, a laser welding head 11 arranged on the bottom of the welding seat 10, a heating plate 12 and an atmosphere plate 13 arranged on the bottom of the welding seat 10, an electromagnetic heating sheet 14 arranged on one side of the heating plate 12, a gas jet head 15 arranged in the inner side of the atmosphere plate 13, an argon gas tank 16 arranged on the top of the lifting plate 402, and a gas pump 17 mounted on the top of the argon gas tank 16 through bolts. The gas pump 17 is connected in communication with the connecting pipe on the outer side wall of the atmosphere plate 13 through a hose.

[0054] Further, the bottom of the assembly seat 5052 is provided with an assembly slot, and a reset slot is formed on one side of the assembly slot. The assembly piece 5054 comprises a reset plate 19 welded on the inner side wall of the reset slot through a reset spring 18, an assembly column 20 and a limiting column 21 fixedly welded on one side of the reset plate 19, and an assembly block 22 fixedly welded on the top of the welding seat 10. A limiting hole 23 is formed on the assembly block 22. The assembly block 22 cooperates with the assembly slot, and the limiting column 21 cooperates with the limiting hole 23.

[0055] In use, the threaded rod 25 is driven to rotate by the lifting motor 24, the threaded ring 26 is driven to move by the threaded rod 25, the threaded block 27 is driven to move by the threaded ring 26, the lifting plate 402 is driven to move by the threaded block 27, the relative position of the laser welding assembly 5 and the storage box 1 is controlled by the lifting plate 402, the storage plate 202 is driven to move by the third cylinder 201, the guide block 203 is driven to move by the storage plate 202, the relative position of the universal wheel 3 and the storage box 1 is controlled by the guide block 203 sliding in the guide groove, the working position of the laser welding assembly 5 is adjusted conveniently, and the laser welding assembly 5 is moved conveniently.

[0056] The laser welding assembly 5 is moved to the top of the storage box 1 by the lifting motor 24, the drainage pipeline to be welded is inserted into the positioning seat 5032 through the pipeline hole 6, the clamping plate 8 is driven to move by the first cylinder 7, the elastic pad 9 is driven to move by the clamping plate 8, and the stainless steel drainage pipeline is clamped and fixed by the two elastic pads 9.

[0057] The assembly seat 5052 is driven to move downward by the second cylinder 5051, the welding seat 10 is driven to move downward by the assembly seat 5052, the transmission rod 5042 is driven to rotate by the uniform motor 5041, the gear 5043 is driven to rotate by the transmission rod 5042, the gear 5043 is engaged with the gear ring 5044, the T-shaped ring 5031 is driven to rotate by the gear ring 5044, and then the positioning seat 5032 is driven to rotate, so that the two butt-jointed drainage pipelines rotate uniformly in the same direction, the welding position is heated by the electromagnetic heating sheet 14, preheating treatment is performed, the cooling rate is reduced, the hydrogen embrittlement risk is reduced, after preheating, argon is delivered by the pump body like a jet head 15 to form an argon environment at the welding position, and welding work is performed by the laser welding head 11, with the uniform rotation of the butt-jointed pipeline, the welding seam is welded uniformly in the circumferential direction, the welding quality is improved, and the labor cost is reduced.

[0058] After welding is completed, the laser welding head 11 stops working, and the electromagnetic heating sheet 14 continues to work to perform heat treatment on the welding position to eliminate residual stress.

[0059] The reset plate 19 is driven to move by the assembly column 20, the reset plate 19 extrudes the reset spring 18, the limit column 21 is driven to move by the reset plate 19, the relative position of the limit column 21 and the limit hole 23 is controlled, and then the relative position of the assembly seat 5052 and the welding seat 10 is controlled, so that the laser welding piece 5053 is repaired and replaced simply and conveniently.

[0060] The above is only a preferred embodiment of the present application, which is only illustrative but not limiting for the present application. It is understood by those skilled in the art that many changes, modifications and even equivalents can be made to the present application within the spirit and scope defined by the claims of the present application, and all shall fall within the protection scope of the present application.

Claims

1. A portable laser welding device for sewer maintenance, characterized by, Include: The storage box (1) is provided with a storage groove at the bottom, and a placing groove is provided at the top. The storage structure (2) is installed inside the storage groove. The bottom of the storage structure (2) is provided with a universal wheel (3); The lifting structure (4) is installed inside the placing groove. The lifting structure (4) includes a lifting piece (401) installed on the inner side wall of the storage box (1) and a lifting plate (402) installed on one side of the lifting piece (401); The laser welding assembly (5) is installed on the top of the lifting structure (4). The laser welding assembly (5) is used for uniform welding of the drainage pipeline; The laser welding assembly (5) includes a mounting bracket (501) fixedly welded on the top of the lifting plate (402), an auxiliary frame (502) fixedly welded on one side of the mounting bracket (501), a positioning structure (503) installed on the inner side wall of the mounting bracket (501), a uniform structure (504) installed on the inner side wall of the auxiliary frame (502), and a laser welding structure (505) installed on the top of the mounting bracket (501).

2. A portable laser welding apparatus for sewer maintenance as defined in claim 1, wherein The mounting bracket (501) is provided with a pipeline hole (6) on one side. A T-shaped ring (5031) groove is formed in the inner side wall of the mounting bracket (501). The positioning structure (503) includes a T-shaped ring (5031) slidingly connected inside the T-shaped ring (5031) groove, a positioning seat (5032) fixedly welded on one side of the T-shaped ring (5031), and a positioning piece (5033) installed on the positioning seat (5032).

3. A portable laser welding apparatus for sewer maintenance as defined in claim 2, wherein The positioning piece (5033) includes a first air cylinder (7) mounted on the outer side wall of the positioning seat (5032) by bolts, a clamping plate (8) fixedly installed on the output shaft of the first air cylinder (7), and an elastic pad (9) installed on the inner side wall of the clamping plate (8).

4. A portable laser welding apparatus for sewer maintenance as defined in claim 2, wherein The uniform structure (504) includes a uniform motor (5041) mounted on the outer side wall of the auxiliary frame (502) by bolts, a transmission rod (5042) fixedly installed at both ends of the output shaft of the uniform motor (5041) and rotatably mounted on the inner side wall of the auxiliary frame (502), a gear (5043) fixedly sleeved on the outer side of the transmission rod (5042), and a gear ring (5044) fixedly sleeved on the outer side of the T-shaped ring (5031). The gear (5043) is engaged with the gear ring (5044).

5. A portable laser welding apparatus for sewer maintenance as defined in claim 4, wherein The laser welding structure (505) includes a second air cylinder (5051) mounted on the top of the mounting bracket (501) by bolts, a splicing seat (5052) fixedly installed on the output shaft of the second air cylinder (5051), a laser welding piece (5053) installed on the bottom of the splicing seat (5052), and a splicing piece (5054) installed inside the splicing seat (5052).

6. A portable laser welding apparatus for sewer maintenance as defined in claim 5, wherein The laser welding piece (5053) comprises a welding seat (10), a laser welding head (11) arranged at the bottom of the welding seat (10), a heating plate (12) and an atmosphere plate (13) arranged at the bottom of the welding seat (10), an electromagnetic heating sheet (14) arranged at one side of the heating plate (12), a gas jet head (15) arranged at the inner side of the atmosphere plate (13), an argon tank (16) arranged at the top of the lifting plate (402), and a gas pump (17) mounted on the top of the argon tank (16) by bolts, wherein the gas pump (17) is connected to the connecting pipe on the outer side wall of the atmosphere plate (13) through a hose.

7. A portable laser welding apparatus for sewer maintenance as defined in claim 6, wherein The assembling seat (5052) is provided with an assembling groove at the bottom, and a reset groove is arranged at one side of the assembling groove. The assembling piece (5054) comprises a reset plate (19) welded to the inner side wall of the reset groove through a reset spring (18), an assembling column (20) and a limiting column (21) fixedly welded to one side of the reset plate (19), and an assembling block (22) fixedly welded to the top of the welding seat (10), wherein a limiting hole (23) is arranged on the assembling block (22), the assembling block (22) is matched with the assembling groove, and the limiting column (21) is matched with the limiting hole (23).

8. A portable laser welding device for sewer maintenance as defined in claim 1, wherein A guide groove is arranged on the inner side wall of the receiving groove. The receiving structure (2) comprises a third air cylinder (201) mounted on the inner top wall of the receiving groove by bolts, a receiving plate (202) fixedly arranged on the output shaft of the third air cylinder (201), and a guide block (203) fixedly welded to one side of the receiving plate (202), wherein the guide block (203) is slidingly connected in the guide groove, and the universal wheel (3) is arranged at the bottom of the receiving plate (202).

9. A portable laser welding apparatus for sewer maintenance as defined in claim 1, wherein A lifting cavity and a lifting groove are arranged on the inner side wall of the placing groove. The lifting piece (401) comprises a lifting motor (24) mounted in the lifting cavity by bolts, a threaded rod (25) rotatably mounted on the inner top wall of the lifting groove and fixedly arranged on the output shaft of the lifting motor (24), a threaded ring (26) threadedly engaged on the threaded rod (25), and a threaded block (27) fixedly welded to one side of the threaded ring (26), wherein the lifting plate (402) is fixedly welded to one side of the threaded block (27).

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