A steel pipe welding device suitable for construction engineering

Abstract

The application relates to the technical field of building steel pipe welding processing, and discloses a steel pipe welding device suitable for building engineering, which comprises a mounting table, a mounting groove is formed in the mounting table, two first bidirectional threaded rods are rotationally connected in the mounting groove, and the two first bidirectional threaded rods are drivingly connected through a transmission wheel and a transmission belt. The steel pipe welding device is used for placing two steel pipes into mounting rings, clamping and fixing the steel pipes through a clamping mechanism in the mounting rings, moving the steel pipes, automatically polishing the bevels of the two steel pipes through a steel pipe bevel polishing mechanism, automatically welding the steel pipes through a welding mechanism after polishing, and automatically polishing the welded seams, so that the bevel polishing and welding integration automatic processing of steel pipes of different sizes is realized, and the welding efficiency and welding effect of the steel pipes are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building steel pipe welding processing, in particular to a steel pipe welding device suitable for building engineering. BACKGROUND

[0002] Steel pipe has a hollow section, its length is much larger than the diameter or circumference of steel, according to the cross-sectional shape, it is divided into round, square, rectangular and special-shaped steel pipe, according to the material, it is divided into carbon structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe; according to the use, it is divided into conveying pipe, engineering structure, hot work equipment, petroleum and chemical industry, machinery manufacturing, geological drilling, high pressure equipment steel pipe, etc.; according to the production process, it is divided into seamless steel pipe and welded steel pipe, among which the seamless steel pipe is divided into hot rolling and cold rolling (pulling), and the welded steel pipe is divided into straight seam welded steel pipe and spiral seam welded steel pipe; the steel pipe used in building engineering is often insufficient in length, and professional welders are needed to weld two steel pipes.

[0003] At present, when the steel pipe for building engineering is welded, the clamping mechanism is usually used to clamp and fix the steel pipe, then the worker holds the grinder to grind the end face of the steel pipe, after grinding, the two steel pipes are butt jointed, then the welding gun head is held to weld the steel pipe, and after welding, the welding part is ground again. This welding method is more complicated, resulting in low welding efficiency of the steel pipe, and the precision of the manual grinding of the bevel is difficult to control, resulting in poor grinding effect of the bevel, thereby affecting the subsequent welding effect of the steel pipe. SUMMARY

[0004] The purpose of the present application is to provide a steel pipe welding device suitable for building engineering to solve the problems in the background art.

[0005] The purpose of the present application can be realized by the following technical scheme:

[0006] A steel pipe welding device suitable for building engineering, comprising a mounting table, a mounting groove is formed in the mounting table, two first bidirectional threaded rods are rotatably connected in the mounting groove, the two first bidirectional threaded rods are drivingly connected through a transmission wheel and a transmission belt, one end of one of the first bidirectional threaded rods is fixedly connected with a first motor through a shaft coupling, a transmission block is threadedly connected with the outer surface of the first bidirectional threaded rod, a first mounting plate is fixedly connected to the top of the transmission block, a mounting ring is rotatably connected to the first mounting plate, a clamping mechanism is arranged on the mounting ring, and the clamping mechanism is used for clamping and fixing the steel pipe; a driving mechanism connected with the mounting table is drivingly connected to one side of the mounting ring, and the driving mechanism is used for driving the mounting ring to rotate.

[0007] The top of the mounting table is fixedly connected with a mounting frame, a first electric telescopic rod is fixedly connected in the mounting frame, a steel pipe bevel polishing mechanism is fixedly connected to the bottom end of the first electric telescopic rod, the steel pipe bevel polishing mechanism is used for bevel polishing on one side of the steel pipe, and a welding mechanism is arranged in the mounting frame.

[0008] As a further scheme of the present application: the steel pipe bevel polishing mechanism comprises a transmission frame fixedly connected with the first electric telescopic rod, two transmission shafts are rotatably connected in the transmission frame, a second mounting plate is fixedly connected between the two transmission shafts through a connecting block, a second motor is fixedly connected on the second mounting plate, a first rotating shaft is fixedly connected to the output end of the second motor through a shaft coupling, two second rotating shafts rotatably connected with the second mounting plate are drivingly connected to the outer surface of the first rotating shaft through a transmission wheel and a transmission belt, a first polishing disc is fixedly connected to one end of the second rotating shaft, and a second polishing disc is fixedly connected to the other end of the second rotating shaft, and the outer surface of the transmission shaft is drivingly connected with a first transmission mechanism connected with the transmission frame.

[0009] As a further scheme of the present application: the first transmission mechanism comprises a second electric telescopic rod fixedly connected with the transmission frame, a first transmission rack is fixedly connected to one end of the second electric telescopic rod, and a first transmission gear fixedly sleeved with the transmission shaft is meshingly connected on one side of the first transmission rack.

[0010] As a further scheme of the present application: the welding mechanism comprises a third motor fixedly connected with the mounting frame, a second bidirectional screw rod rotatably connected with the mounting frame is fixedly connected to the output end of the third motor through a shaft coupling, two third mounting plates are threadedly matched on the outer surface of the second bidirectional screw rod, a guide rod fixedly connected with the mounting frame is slidingly connected on the third mounting plates, a welding gun head is fixedly connected on one side of one of the third mounting plates, and a knocking mechanism is arranged on the other third mounting plate.

[0011] As a further scheme of the present application: the knocking mechanism comprises a mounting box fixedly connected with the third mounting plate, a fourth motor is fixedly connected in the mounting box, a third rotating shaft is fixedly connected to the output end of the fourth motor through a shaft coupling, a cam is fixedly sleeved on the outer surface of the third rotating shaft, a transmission plate slidingly connected with the mounting box is slidingly connected on the outer surface of the cam, a knocking hammer slidingly connected with the mounting box is fixedly connected on one side of the transmission plate, and a spring fixedly connected with the mounting box is fixedly connected on one side of the transmission plate.

[0012] As a further scheme of the present application: the clamping mechanism comprises a functional cavity formed on the mounting ring, a transmission gear ring is rotatably connected in the functional cavity, a plurality of second transmission gears are rotatably connected with the functional cavity and meshingly connected with the inner surface of the transmission gear ring, the outer surface of the second transmission gears is meshingly connected with a second transmission rack, one side of the second transmission rack is fixedly connected with a transmission column that is slidingly connected with the mounting ring, one end of the transmission column is fixedly connected with a clamping plate, one side of the clamping plate is fixedly connected with a rubber friction pad, and the inner surface of the transmission gear ring is drivingly connected with a second transmission mechanism that is connected with the mounting ring.

[0013] As a further scheme of the present application: the second transmission mechanism comprises a third electric telescopic rod that is fixedly connected with the mounting ring, one end of the third electric telescopic rod is fixedly connected with a third transmission rack that is slidingly connected with the mounting ring, one side of the third transmission rack is meshingly connected with a third transmission gear, a fourth rotating shaft that is rotatably connected with the mounting ring is fixedly sleeved in the middle of the third transmission gear, and the outer surface of the fourth rotating shaft is fixedly sleeved with a fourth transmission gear that is meshingly connected with the transmission gear ring.

[0014] As a further scheme of the present application: the driving mechanism comprises a transmission ring that is fixedly connected with the mounting ring, one side of the mounting table is fixedly connected with a fifth motor, the output end of the fifth motor is fixedly connected with a fifth rotating shaft that is rotatably connected with the mounting table through a shaft coupling, the outer surface of the fifth rotating shaft is fixedly sleeved with a first gear, and the outer surface of the first gear is meshingly connected with a second gear that is fixedly sleeved with the transmission ring.

[0015] The present application has the following advantages:

[0016] (1) By placing two steel pipes into the mounting ring, then clamping and fixing the steel pipes through the clamping mechanism in the mounting ring, then moving the steel pipes, and then automatically polishing the bevels of the two steel pipes through the steel pipe bevel polishing mechanism, after polishing, the steel pipes are automatically welded through the welding mechanism, and the welded welds are automatically polished, so that the bevel polishing and welding integration of steel pipes of different sizes is realized, and the welding efficiency and effect of the steel pipes are greatly improved.

[0017] (2) through the first electric telescopic rod drive transmission frame to move down, then through the first transmission mechanism in the transmission frame drive transmission shaft and mounting plate rotation, thereby adjusting the angle of the first polishing disc, then through the drive mechanism drive steel pipe rotation, realize the polishing of steel pipe groove, at the same time in polishing, continue to drive the second mounting plate rotation, make the first polishing disc and steel pipe end face produce certain extrusion force realize the first polishing disc to the end face of steel pipe inclined polishing, make the end face of two steel pipe evenly polished into a certain angle groove, thereby realize the automatic and even polishing of the end face of two steel pipes, greatly improve the efficiency and polishing effect of steel pipe groove polishing.

[0018] (3) when the steel pipe groove is polished, then through the cooperation of the welding mechanism, realize the full automatic welding of the butt joint of two steel pipes with different diameters, greatly improve the efficiency of steel pipe welding, also improve the applicability of the welding device, at the same time after welding, through the knocking mechanism, the weld of the welding place is automatically knocked and cleaned, at the same time through the knocking of the welding place, the residual stress generated in the welding process is eliminated in time, the influence of residual stress on the welding place is reduced, at the same time after knocking, then drive the second polishing disc to be perpendicular to the welding place, then polish the welding place through the second polishing disc, so that the welding place is polished flat, which is convenient for subsequent paint spraying and corrosion prevention of the welding place of steel pipe.

[0019] (4) through the steel pipe into the mounting ring, then through the third electric telescopic rod drive third transmission rack to move, the third transmission rack drive the third transmission gear to rotate, the third transmission gear drive the fourth rotating shaft to rotate, the fourth rotating shaft drive the transmission gear ring to rotate through the fourth transmission gear, the transmission gear ring drive the second transmission gear to rotate, the second transmission gear drive the second transmission rack to move, the second transmission rack drive the transmission column and clamping plate to move, the clamping plate drive the rubber friction pad to clamp and fix the steel pipe, so as to realize the stable clamping and fixing of steel pipe with different diameters. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described below in combination with the drawings.

[0021] Figure 1 is the first perspective view of the external structure of the application;

[0022] Figure 2 is the second perspective view of the external structure of the application;

[0023] Figure 3 is the third perspective view of the external structure of the application;

[0024] Figure 4 is the perspective view of the internal structure of the application;

[0025] Figure 5 is the external structure perspective view of the groove polishing mechanism of the present application;

[0026] Figure 6 is the internal structure perspective view of the installation box of the present application;

[0027] Figure 7 is the internal structure side view of the installation ring of the present application;

[0028] Figure 8 is the enlarged view of A in the present application; Figure 1

[0029] Figure 9 is the enlarged view of B in the present application; Figure 3

[0030] Figure 10 is the enlarged view of C in the present application. Figure 4

[0031] In the figure: 1, installation table; 2, installation groove; 3, first bidirectional threaded rod; 4, first motor; 5, transmission block; 6, first installation plate; 7, installation ring; 8, installation frame; 9, first electric telescopic rod; 11, transmission frame; 12, transmission shaft; 13, second installation plate; 14, second motor; 15, first rotating shaft; 16, second rotating shaft; 17, first polishing disc; 18, second polishing disc; 21, second electric telescopic rod; 22, first transmission rack; 23, first transmission gear; 31, third motor; 32, second bidirectional threaded rod; 33, third installation plate; 34, guide rod; 35, welding gun head; 41, installation box; 42, fourth motor; 43, third rotating shaft; 44, cam; 45, transmission plate; 46, knocking hammer; 47, spring; 51, functional cavity; 52, transmission gear ring; 53, second transmission gear; 54, second transmission rack; 55, transmission column; 56, clamping plate; 57, rubber friction pad; 61, third electric telescopic rod; 62, third transmission rack; 63, third transmission gear; 64, fourth rotating shaft; 65, fourth transmission gear; 71, transmission ring; 72, fifth motor; 73, fifth rotating shaft; 74, first gear; 75, second gear. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0033] Embodiment one

[0034] Please refer to​​​Figures 1-10 The utility model is a kind of steel pipe welding device suitable for construction engineering, including installation platform 1, installation groove 2 is set on installation platform 1, two first two-way threaded rods 3 are rotatably connected in installation groove 2, two first two-way threaded rods 3 are drivenly connected by transmission wheel and transmission belt, one end of one of first two-way threaded rods 3 is fixedly connected with first motor 4 by coupling, first motor 4 is controlled by PLC programming control, can control first motor 4 and rotate and rotation angle, the outer surface of first two-way threaded rod 3 is threadedly matched with transmission block 5, the top of transmission block 5 is fixedly connected with first mounting plate 6, first mounting plate 6 is rotatably connected with mounting ring 7, clamping mechanism is provided on mounting ring 7, and clamping mechanism is used to clamp and fix steel pipe;The side of mounting ring 7 is drivenly connected with the drive mechanism connected with installation platform 1, and drive mechanism is used to drive mounting ring 7 to rotate;

[0035] The top of installation platform 1 is fixedly connected with mounting bracket 8, first electric telescopic rod 9 is fixedly connected in mounting bracket 8, the bottom of first electric telescopic rod 9 is fixedly connected with steel pipe beveling polishing mechanism, and steel pipe beveling polishing mechanism is used to polish the side of steel pipe, and welding mechanism is arranged in mounting bracket 8, and welding mechanism is used to weld steel pipe.

[0036] Drive mechanism includes transmission ring 71 fixedly connected with mounting ring 7, fifth motor 72 is fixedly connected on the side of installation platform 1, fifth motor 72 is controlled by PLC programming control, can control fifth motor 72 and rotate and rotation angle, the output of fifth motor 72 is fixedly connected with the fifth rotating shaft 73 rotatably connected with installation platform 1 by coupling, first gear 74 is fixedly sleeved on the outer surface of fifth rotating shaft 73, and second gear 75 is fixedly sleeved on the outer surface of first gear 74 and is engaged with transmission ring 71.

[0037] Fifth motor 72 drives fifth rotating shaft 73 to rotate, and fifth rotating shaft 73 drives transmission ring 71 to rotate by first gear 74 and second gear 75.

[0038] By putting two steel pipes into the mounting ring 7, then clamping and fixing the steel pipes through the clamping mechanism in the mounting ring 7, then moving the first bidirectional threaded rod 3 driven by the first motor 4, the first mounting plate 6 and the mounting ring 7 on both sides of the mounting table 1 are driven to move close to each other, at this time the second gear 75 on the transmission ring 71 slides on the first gear 74, thereby driving the two steel pipes to move close to each other, and moving to a certain extent, then driving the mounting ring 7 to rotate through the driving mechanism, the mounting ring 7 drives the steel pipes to rotate, at the same time, the one end of the steel pipe is beveling and polishing through the cooperation of the steel pipe beveling and polishing mechanism, when the polishing is finished, then the two steel pipes are moved close to each other, the two steel pipes are butt jointed, at the same time, the driving mechanism is started, the steel pipes are rotated, then the welding mechanism is used to weld the connection part of the two steel pipes, after welding, the steel pipe welding part is polished through the steel pipe beveling and polishing mechanism, so that the welding part is polished flat, which is convenient for subsequent paint spraying and corrosion prevention, thereby realizing the beveling and polishing and welding integration of the steel pipes, and greatly improving the welding efficiency and welding effect of the steel pipes.

[0039] Embodiment two

[0040] On the basis of embodiment one, please refer to Figure 3 Figure 4 Figure 5 Figure 9 And Figure 10 As shown in the figure, the steel pipe beveling and polishing mechanism comprises a transmission frame 11 fixedly connected with the first electric telescopic rod 9, two transmission shafts 12 are rotatably connected in the transmission frame 11, a second mounting plate 13 is fixedly connected on the second mounting plate 13 through a connecting block, a second motor 14 is fixedly connected on the second mounting plate 13, the second motor 14 is controlled to rotate forward and reverse and the rotation angle through PLC programming control, a first rotating shaft 15 is fixedly connected to the output end of the second motor 14 through a shaft coupling, the outer surface of the first rotating shaft 15 is drivingly connected with two second rotating shafts 16 rotatably connected with the second mounting plate 13 through transmission wheels and transmission belts, a first polishing disc 17 is fixedly connected to one end of the second rotating shaft 16, and a second polishing disc 18 is fixedly connected to the other end of the second rotating shaft 16, the outer surface of the transmission shaft 12 is drivingly connected with a first transmission mechanism connected with the transmission frame 11.

[0041] The first transmission mechanism comprises a second electric telescopic rod 21 fixedly connected with the transmission frame 11, a first transmission rack 22 is fixedly connected to one end of the second electric telescopic rod 21, and a first transmission gear 23 is fixedly sleeved with the transmission shaft 12 and meshingly connected on one side of the first transmission rack 22.

[0042] The first polishing disc 17 is adhered to the end of the steel pipe by rotating the second rotating shaft 16 by a certain angle. Then the driving mechanism is started to drive the mounting ring 7 and the steel pipe to rotate. At this time, the first polishing disc 17 polishes the end face of the steel pipe, and at the same time, the second mounting plate 13 is continuously driven to rotate, so that a certain extrusion force is generated between the first polishing disc 17 and the end face of the steel pipe, thereby realizing the inclined polishing of the first polishing disc 17 to the end face of the steel pipe. The end faces of the two steel pipes are uniformly polished into a certain angle bevel, thereby realizing automatic and uniform polishing of the end faces of the two steel pipes, greatly improving the efficiency and polishing effect of the steel pipe bevel polishing.

[0043] Embodiment three

[0044] On the basis of embodiment two, referring to Figure 3 、 Figure 6 Figure 9 and Figure 10 , the welding mechanism includes a third motor 31 fixedly connected with the mounting frame 8. The third motor 31 is controlled by PLC programming to control the forward and reverse rotation and the rotation angle of the third motor 31. The output end of the third motor 31 is fixedly connected with a second double-threaded rod 32 rotatably connected with the mounting frame 8 through a shaft coupling. The outer surface of the second double-threaded rod 32 is threadedly connected with two third mounting plates 33. The third mounting plates 33 are slidably connected with guide rods 34 fixedly connected with the mounting frame 8. One side of one of the third mounting plates 33 is fixedly connected with a welding gun head 35 connected with an external welding machine. The welding gun head 35 is a prior art and will not be described in detail here. The other third mounting plate 33 is provided with a knocking mechanism.

[0045] When the polishing is completed, the first electric telescopic rod 9 drives the steel pipe bevel polishing mechanism to move upwards, and then drives the two steel pipes to abut against each other, so that the polished steel pipes are butt-jointed. Then the third motor 31 drives the second double-threaded rod 32 to rotate, and the second double-threaded rod 32 drives the two third mounting plates 33 to move towards each other. According to the size of the diameter of the steel pipe, the third mounting plate 33 and the welding gun head 35 are moved to the welding position. Then the welding gun head 35 welds the steel pipes. At the same time, the driving mechanism is started to drive the steel pipes to rotate, thereby realizing automatic welding of the butt-joint of the two steel pipes of different diameters, greatly improving the efficiency of the steel pipe welding, and also improving the applicability of the welding device.

[0046] The knocking mechanism comprises a mounting box 41 fixedly connected with the third mounting plate 33, a fourth motor 42 fixedly connected in the mounting box 41, the fourth motor 42 being capable of being controlled to rotate forward and backward and rotate at an angle through PLC programming control, a third rotating shaft 43 fixedly connected to an output end of the fourth motor 42 through a shaft coupling, a cam 44 fixedly sleeved on an outer surface of the third rotating shaft 43, a transmission plate 45 slidably connected with the cam 44 and the mounting box 41, a knocking hammer 46 fixedly connected to one side of the transmission plate 45 and slidably connected with the mounting box 41, and a spring 47 fixedly connected to one side of the transmission plate 45 and fixedly connected with the mounting box 41.

[0047] When the welding is completed, the welding gun head 35 stops working, the steel pipe is continuously driven to rotate, the third rotating shaft 43 is driven to rotate by the fourth motor 42, the cam 44 is driven to rotate by the third rotating shaft 43, the transmission plate 45 is driven to reciprocatingly slide in the mounting box 41 by the cam 44, the knocking hammer 46 is driven to reciprocatingly move by the transmission plate 45, the knocking hammer 46 knocks the welded steel pipe to knock off the welding skin after welding, realizes automatic cleaning of the welding skin, eliminates the residual stress generated at the welding position in the welding process in time through knocking, reduces the influence of the residual stress at the welding position, and further improves the welding effect of the steel pipe. When the knocking is completed, the transmission shaft 12 and the second mounting plate 13 are driven to rotate by the first transmission mechanism in the transmission frame 11, the second mounting plate 13 is rotated to be perpendicular to the ground, the second polishing disc 18 on the second rotating shaft 16 on the second mounting plate 13 is rotated to be directly above the welding position of the steel pipe, the transmission frame 11 is driven to move downward by the first electric telescopic rod 9, the second motor 14 is started to drive the second rotating shaft 16 and the second polishing disc 18 to rotate, the second polishing disc 18 polishes the welding position of the steel pipe, and the steel pipe is driven to rotate, so that the welding position of the steel pipe is polished, and subsequent paint spraying and corrosion prevention are facilitated.

[0048] Embodiment Four

[0049] On the basis of Embodiment One, refer to Figure 1 Figure 7 and Figure 8 As shown in Figs. 7 to 9, the clamping mechanism comprises a functional cavity 51 formed in the mounting ring 7, a transmission gear ring 52 rotatably connected in the functional cavity 51, a plurality of second transmission gears 53 rotatably connected with the functional cavity 51 and meshingly connected with an inner surface of the transmission gear ring 52, a second transmission rack 54 meshingly connected with an outer surface of the second transmission gears 53, a transmission column 55 slidably connected with the mounting ring 7 and fixedly connected to one side of the second transmission rack 54, a clamping plate 56 fixedly connected to one end of the transmission column 55, a rubber friction pad 57 fixedly connected to one side of the clamping plate 56, and a second transmission mechanism transmissionally connected with the mounting ring 7 and connected to an inner surface of the transmission gear ring 52.

[0050] The second transmission mechanism comprises a third electric telescopic rod 61 fixedly connected with the mounting ring 7, one end of the third electric telescopic rod 61 is fixedly connected with a third transmission rack 62 in sliding connection with the mounting ring 7, one side of the third transmission rack 62 is meshingly connected with a third transmission gear 63, the middle of the third transmission gear 63 is fixedly sleeved with a fourth rotating shaft 64 in rotating connection with the mounting ring 7, and the outer surface of the fourth rotating shaft 64 is fixedly sleeved with a fourth transmission gear 65 in meshing connection with the transmission gear ring 52.

[0051] By placing the steel pipe into the mounting ring 7, then moving the third transmission rack 62 by the third electric telescopic rod 61, the third transmission rack 62 drives the third transmission gear 63 to rotate, the third transmission gear 63 drives the fourth rotating shaft 64 to rotate, the fourth rotating shaft 64 drives the transmission gear ring 52 to rotate through the fourth transmission gear 65, the transmission gear ring 52 drives the second transmission gear 53 to rotate, the second transmission gear 53 drives the second transmission rack 54 to move, the second transmission rack 54 drives the transmission column 55 and the clamping plate 56 to move, and the clamping plate 56 drives the rubber friction pad 57 to clamp and fix the steel pipe, so that the steel pipe of different diameters can be stably clamped and fixed.

[0052] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the implementation range of the present application. Any equivalent changes and improvements made according to the application scope of the present application should still belong to the patent coverage range of the present application.

Claims

1. A steel pipe welding device suitable for construction engineering, comprising a mounting platform, characterized in that, The mounting platform has a mounting slot, in which two first bidirectional threaded rods are rotatably connected. The two first bidirectional threaded rods are connected by a transmission wheel and a transmission belt. One end of one of the first bidirectional threaded rods is fixedly connected to a first motor via a coupling. A transmission block is threaded onto the outer surface of the first bidirectional threaded rod. A first mounting plate is fixedly connected to the top of the transmission block. A mounting ring is rotatably connected to the first mounting plate. The mounting ring is equipped with a clamping mechanism for clamping and fixing the steel pipe. A drive mechanism connected to the mounting platform is driven to one side of the mounting ring for rotating the mounting ring. A mounting frame is fixedly connected to the top of the mounting platform. A first electric telescopic rod is fixedly connected inside the mounting frame. A steel pipe beveling and grinding mechanism is fixedly connected to the bottom end of the first electric telescopic rod. The steel pipe beveling and grinding mechanism is used to bevele one side of the steel pipe. A welding mechanism is installed inside the mounting frame. The welding mechanism is used to weld the steel pipe. The steel pipe beveling and grinding mechanism includes a transmission frame fixedly connected to a first electric telescopic rod. Two transmission shafts are rotatably connected inside the transmission frame. A second mounting plate is fixedly connected between the two transmission shafts via a connecting block. A second motor is fixedly connected to the second mounting plate. The output end of the second motor is fixedly connected to a first rotating shaft via a coupling. Two second rotating shafts, rotatably connected to the second mounting plate, are driven by a transmission wheel and a transmission belt on the outer surface of the first rotating shaft. A first grinding disc is fixedly connected to one end of the second rotating shaft, and a second grinding disc is fixedly connected to the other end of the second rotating shaft. A first transmission mechanism connected to the transmission frame is driven by the outer surface of the transmission shaft. The first transmission mechanism drives the second mounting plate to rotate, thereby causing the grinding discs on the second rotating shafts to rotate at a certain angle. The first transmission mechanism includes a second electric telescopic rod fixedly connected to the transmission frame. One end of the second electric telescopic rod is fixedly connected to a first transmission rack, and one side of the first transmission rack is meshed with a first transmission gear fixedly sleeved with the transmission shaft. Before welding, the second mounting plate is rotated to create a certain pressure between the first grinding disc and the end face of the steel pipe, so that the first grinding disc can perform inclined grinding on the end face of the steel pipe; after welding, the welded part of the steel pipe is ground by the steel pipe bevel grinding mechanism.

2. The steel pipe welding device suitable for construction engineering according to claim 1, characterized in that, The welding mechanism includes a third motor fixedly connected to the mounting bracket. The output end of the third motor is fixedly connected to a second bidirectional threaded rod rotatably connected to the mounting bracket via a coupling. The outer surface of the second bidirectional threaded rod is threaded with two third mounting plates. A guide rod fixedly connected to the mounting bracket is slidably connected to the third mounting plate. A welding gun head is fixedly connected to one side of one of the third mounting plates, and a striking mechanism is provided on the other third mounting plate.

3. A steel pipe welding device suitable for construction engineering according to claim 2, characterized in that, The striking mechanism includes a mounting box fixedly connected to a third mounting plate. A fourth motor is fixedly connected inside the mounting box. The output end of the fourth motor is fixedly connected to a third rotating shaft via a coupling. A cam is fixedly sleeved on the outer surface of the third rotating shaft. A transmission plate that is slidably connected to the mounting box is slidably connected to the outer surface of the cam. A striking hammer that is slidably connected to the mounting box is fixedly connected to one side of the transmission plate. A spring that is fixedly connected to the mounting box is fixedly connected to one side of the transmission plate.

4. A steel pipe welding device suitable for construction engineering according to claim 1, characterized in that, The clamping mechanism includes a functional cavity on the mounting ring, a transmission gear ring rotatably connected inside the functional cavity, a plurality of second transmission gears rotatably connected to the functional cavity on the inner surface of the transmission gear ring, a second transmission rack on the outer surface of the second transmission gears, a transmission column slidably connected to the mounting ring fixedly connected to one side of the second transmission rack, a clamping plate fixedly connected to one end of the transmission column, a rubber friction pad fixedly connected to one side of the clamping plate, and a second transmission mechanism connected to the mounting ring drivingly connected to the inner surface of the transmission gear ring.

5. A steel pipe welding device suitable for construction engineering according to claim 4, characterized in that, The second transmission mechanism includes a third electric telescopic rod fixedly connected to the mounting ring. One end of the third electric telescopic rod is fixedly connected to a third transmission rack that is slidably connected to the mounting ring. A third transmission gear is meshed with one side of the third transmission rack. A fourth rotating shaft that is rotatably connected to the mounting ring is fixedly sleeved in the middle of the third transmission gear. A fourth transmission gear that meshes with the transmission gear ring is fixedly sleeved on the outer surface of the fourth rotating shaft.

6. A steel pipe welding device suitable for construction engineering according to claim 1, characterized in that, The drive mechanism includes a transmission ring fixedly connected to the mounting ring, a fifth motor fixedly connected to one side of the mounting platform, and a fifth rotating shaft rotatably connected to the mounting platform via a coupling at the output end of the fifth motor. A first gear is fixedly sleeved on the outer surface of the fifth rotating shaft, and a second gear fixedly sleeved on the outer surface of the first gear is meshed with the transmission ring.

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