Welding device for connecting pipe of electromechanical equipment

Abstract

The invention relates to the technical field of pipe welding devices, in particular to an electromechanical equipment connecting pipe welding device which comprises a base, a moving mechanism is arranged at the top end of the base, an included angle adjusting mechanism is arranged on the moving mechanism, and a length adjusting mechanism and an inner side clamping mechanism are arranged on the included angle adjusting mechanism; the included angle adjusting mechanism comprises two vertical plates which are symmetrically arranged, rotating shafts rotationally penetrate through the two vertical plates, placing frames are fixedly connected to one ends of the two rotating shafts, square steel pipes are arranged on the inner walls of the two placing frames, and arc-shaped holes are formed in the outer sides, corresponding to the rotating shafts, of the two vertical plates in a penetrating mode; arc-shaped blocks are arranged on the inner walls of the two arc-shaped holes correspondingly, and the two arc-shaped blocks are fixedly connected with the two containing frames correspondingly. The included angle between the square steel pipes can be adjusted according to needs, so that the requirements of various included angles can be met, and the applicability and flexibility of the welding device are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe welding devices, and in particular to a welding device for connecting pipes of electromechanical equipment. Background Art

[0002] Electromechanical equipment generally refers to machinery, electrical appliances and electrical automation equipment, and the pipe connection welding device for electromechanical equipment is a special equipment integrating machinery, electricity and welding technologies, mainly used for the pipe connection welding operation of electromechanical equipment. Through specific structural and functional designs, it realizes the precise fixation, alignment and welding of pipe fittings, thereby improving the welding quality and efficiency.

[0003] Within the scope of the prior art, before the welding operation of square steel pipes, the weld interfaces of two square steel pipes need to be accurately butt-jointed, and then the welding process is carried out using a welding torch. However, during the butt-jointing process, the butt-joint angle of square steel pipes is usually limited to standard straight butt-joints or right-angle butt-joints, while there are diverse angle requirements in actual application scenarios, which results in the lack of necessary angle adjustment functions in existing welding devices, thus weakening their practicability and operation flexibility.

[0004] In addition, during the pre-treatment stage before welding square steel pipes, the pipe orifices need to be accurately cut. This process is often carried out using a handheld metal cutting machine. However, during the operation of the handheld cutting machine, due to the tremor of the operator's arm, it is inevitable to generate slight tremors of the cutting machine. This tremor will directly affect the flatness of the cut surface of the pipe orifice, making it difficult for the square steel pipes to form a tight gap fit during butt-jointing, ultimately having an adverse impact on the welding quality and efficiency, and increasing the risk of welding defects. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies in the background art and propose a welding device for connecting pipes of electromechanical equipment.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a welding device for connecting pipes of electromechanical equipment, including a base, a moving mechanism is arranged at the top of the base, an angle adjustment mechanism is arranged on the moving mechanism, and a length adjustment mechanism and an inner clamping mechanism are arranged on the angle adjustment mechanism; The angle adjustment mechanism includes vertical plates, two vertical plates are symmetrically arranged, rotating shafts penetrate through both vertical plates, one ends of the two rotating shafts are fixedly connected with placement frames respectively, square steel pipes are arranged on the inner walls of the two placement frames, arc-shaped holes are respectively arranged on the outer sides of the corresponding rotating shafts on the two vertical plates, arc-shaped blocks are arranged on the inner walls of the two arc-shaped holes, the two arc-shaped blocks are fixedly connected with the two placement frames respectively, and the arc-shaped blocks slide in the arc-shaped holes to adjust the angle between the placement frames and the horizontal plane; The length adjustment mechanism includes fixed blocks fixedly connected to the upper and lower ends of the placement frame. Square frames are slidably connected to the outer walls of the two groups of fixed blocks. Limiting plates are fixedly connected between the two groups of square frames. Placement seats that are adapted to the inner wall shape of the square steel pipe are fixedly connected to one end of the two limiting plates that are close to each other. The distance between the limiting plate and the placement frame is adjusted according to the length of the square steel pipe.

[0007] Preferably, the angle adjustment mechanism further includes a telescopic groove opened at the other end of the arc-shaped block. Telescopic columns are arranged on the inner walls of the two telescopic grooves. A tension spring is fixedly connected between each group of telescopic columns and the telescopic groove.

[0008] Preferably, connecting plates are fixedly connected to the other ends of the two telescopic columns. Clamping columns are fixedly connected to both sides of the corresponding telescopic columns at one end of the two connecting plates close to the vertical plate. Multiple groups of card slots that are adapted to the shape of the clamping columns are opened on both sides of the two vertical plates corresponding to the arc-shaped holes.

[0009] Preferably, the length adjustment mechanism further includes fixed frames fixedly connected to the outer sides of the corresponding fixed blocks at both ends of the placement frame. Hydraulic rods are fixedly penetrated through the two groups of fixed frames. Square plates are fixedly connected to the telescopic ends of the two groups of hydraulic rods. Multiple fixing cones for fixing the square frames are fixedly connected to both sides of one end of the two square plates that are close to each other.

[0010] Preferably, guide grooves are symmetrically opened at one end of the two groups of fixed blocks away from each other. Guide columns are arranged on the inner walls of each group of guide grooves. Each group of guide columns is fixedly connected to each square plate respectively.

[0011] Preferably, the inner clamping mechanism includes square grooves opened at one end of the placement seats away from each other. Telescopic holes are penetrated through the four sides of each square groove. Clamping columns for clamping and fixing from the inside of the square steel pipe are arranged on the inner walls of each telescopic hole. Inclined surfaces are arranged at one end of the two groups of clamping columns away from each other. Chute grooves are opened on the side of each group of telescopic holes away from the limiting plate. Sliding blocks are slidably connected to the inner walls of each chute groove. Springs are fixedly connected between each group of sliding blocks and the chute grooves.

[0012] Preferably, the inner clamping mechanism further includes U-shaped plates fixedly connected to one end of the limiting plates away from each other. Electric push rods are fixedly penetrated through the two U-shaped plates. Square blocks that are adapted to the shape of the square groove are fixedly connected to the telescopic ends of the two electric push rods.

[0013] Preferably, the moving mechanism includes a moving groove formed at the top end of the base. One side of the inner wall of the moving groove is rotatably connected to a bidirectional screw rod. One end of the base is fixedly connected to a motor, and the driving end of the motor is fixedly connected to the bidirectional screw rod. Both sides of the outer wall of the bidirectional screw rod are threadedly connected with moving seats adapted to the shape of the moving groove, and the two moving seats are respectively fixedly connected to the two vertical plates.

[0014] Preferably, in the middle of the top end of the base corresponding to both sides of the moving groove, there are fixedly connected U-shaped seats. A three-stage cylinder is fixedly penetrated through the top end of the U-shaped seat, and a grinding mechanism is fixedly installed at the telescopic end of the three-stage cylinder. A telescopic structure is fixedly connected between the U-shaped seat and the grinding mechanism.

[0015] Compared with the prior art, the present invention has the following beneficial effects: Through the provided angle adjustment mechanism, the arc-shaped block can slide in the arc-shaped hole, and the fixation of the arc-shaped block is completed through the cooperation of the clamping column and the clamping groove, so that the angle between the placement frame and the horizontal plane can be adjusted. Therefore, the angle between the square steel pipes can be adjusted according to needs, so that the requirements of various angles can be met, improving the applicability and flexibility of the welding device. And after adjusting the angle, the cutting surface of the pipe orifice of the square steel pipe is polished by the grinding mechanism to ensure the smoothness and flatness of the cutting surface, so that the gaps can be closely fitted during butt joint, thereby ensuring the welding effect and welding efficiency of the square steel pipe. Through the provided length adjustment mechanism, the square frame can be stretched and the distance between the limiting plate and the placement frame can be changed according to the length of the square steel pipe. Therefore, it can be applicable to square steel pipes of different lengths and can be combined in different ways; Through the provided inner clamping mechanism, the square steel pipe can be clamped and fixed from the inside by the clamping columns, ensuring that the steel pipe maintains a stable shape and position during the welding process, avoiding deformation or displacement caused by external forces, and ensuring the precise alignment of the butt joint surfaces of the square steel pipes, improving the welding accuracy and quality, reducing the generation of welding defects, and preventing deformation of the outer wall of the square steel pipe and ensuring the integrity of the outer wall of the square steel pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of a welding device for connecting pipes of an electromechanical device according to the present invention; Figure 2 is a rear top view of a welding device for connecting pipes of an electromechanical device according to the present invention; Figure 3 is a structural display diagram on the vertical plate of a welding device for connecting pipes of an electromechanical device according to the present invention; Figure 4 is a cross-sectional view of a fixing block of a welding device for connecting pipes of an electromechanical device according to the present invention; Figure 5Schematic diagram of separation of square steel pipe and placement seat of a welding device for connecting pipes of electromechanical equipment according to the present invention; Figure 6 Cross-sectional view of the placement seat of a welding device for connecting pipes of electromechanical equipment according to the present invention; Figure 7 Another perspective cross-sectional view of the placement seat of a welding device for connecting pipes of electromechanical equipment according to the present invention; Figure 8 Cross-sectional view of the arc-shaped block of a welding device for connecting pipes of electromechanical equipment according to the present invention.

[0017] In the figure: 1, base; 2, vertical plate; 3, rotating shaft; 4, placement frame; 5, square steel pipe; 6, arc-shaped hole; 7, arc-shaped block; 8, fixed block; 9, square frame; 10, limiting plate; 11, placement seat; 12, telescopic groove; 13, telescopic column; 14, tension spring; 15, connecting plate; 16, clamping column; 17, clamping groove; 18, fixed frame; 19, hydraulic rod; 20, square plate; 21, fixed cone; 22, telescopic structure; 23, guiding groove; 24, guiding column; 25, square groove; 26, telescopic hole; 27, clamping column; 28, sliding groove; 29, sliding block; 30, spring; 31, U-shaped plate; 32, electric push rod; 33, square block; 34, moving groove; 35, bidirectional screw; 36, motor; 37, moving seat; 38, U-shaped seat; 39, three-stage cylinder; 40, grinding mechanism; 41, brazing torch. Detailed implementation manners

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0019] As Figures 1 - 8 shown, a welding device for connecting pipes of electromechanical equipment includes a base 1. Symmetrically fixed to the top of the base 1 are placement frames. On both placement frames are placed brazing torches 41. The two brazing torches 41 are used to perform welding treatment on the butt joint of the square steel pipe 5. A moving mechanism is arranged at the top of the base 1. An angle adjustment mechanism is arranged on the moving mechanism. A length adjustment mechanism and an inner clamping mechanism are arranged on the angle adjustment mechanism. By means of the arranged moving mechanism, the vertical plates 2 can move towards each other, so that the cutting surfaces of the square steel pipes 5 are closely attached. By means of the arranged angle adjustment mechanism, it can be adjusted according to the angle between the square steel pipes 5, improving applicability and flexibility. By means of the arranged length adjustment mechanism, it can be applicable to square steel pipes 5 of different lengths and perform different combinations. By means of the arranged inner clamping mechanism, it can ensure that the butt joints of the square steel pipes 5 are accurately aligned, improving the precision and quality of welding, reducing the generation of welding defects, and preventing deformation of the outer wall of the square steel pipe 5, ensuring the integrity of the outer wall of the square steel pipe 5; AsFigure 1 , Figure 2 As shown in the figure, the angle adjustment mechanism includes a vertical plate 2. There are two symmetrically arranged vertical plates 2. A rotating shaft 3 penetrates through both vertical plates 2. One end of each of the two rotating shafts 3 is fixedly connected to a placement frame 4. Square steel pipes 5 are arranged on the inner walls of the two placement frames 4. Arc-shaped holes 6 are respectively penetrated on the outer sides of the two vertical plates 2 corresponding to the rotating shafts 3. Arc-shaped blocks 7 are arranged on the inner walls of the two arc-shaped holes 6. The two arc-shaped blocks 7 are respectively fixedly connected to the two placement frames 4. The arc-shaped blocks 7 slide in the arc-shaped holes 6 to adjust the angle between the placement frame 4 and the horizontal plane; As Figure 1 , Figure 3 , Figure 5 As shown in the figure, the length adjustment mechanism includes fixing blocks 8 fixedly connected to the upper and lower ends of the placement frame 4. Square frames 9 are slidably connected to the outer walls of the two groups of fixing blocks 8. Limiting plates 10 are fixedly connected between the two groups of square frames 9. Placement seats 11 that are adapted to the inner wall shape of the square steel pipe 5 are fixedly connected to one end of the two limiting plates 10 close to each other. The distance between the limiting plate 10 and the placement frame 4 is adjusted according to the length of the square steel pipe 5.

[0020] As Figure 2 , Figure 8 As shown in the figure, the angle adjustment mechanism further includes a telescopic groove 12 opened at the other end of the arc-shaped block 7. Telescopic columns 13 are arranged on the inner walls of the two telescopic grooves 12. A tension spring 14 is fixedly connected between each group of telescopic columns 13 and the telescopic groove 12. The other ends of the two telescopic columns 13 are fixedly connected to a connecting plate 15. Clamping columns 16 are fixedly connected to both sides of the two connecting plates 15 close to the vertical plate 2 corresponding to the telescopic columns 13. Multiple groups of clamping grooves 17 that are adapted to the shape of the clamping columns 16 are respectively opened on both sides of the two vertical plates 2 corresponding to the arc-shaped holes 6. After the placement frame 4 rotates to the required angle, release the connecting plate 15. The elastic reset effect of the tension spring 14 will drive the telescopic column 13 to drive the connecting plate 15 to move towards the direction close to the arc-shaped block 7. At this time, the clamping column 16 is inserted into the appropriate clamping groove 17, so as to fix the positions of the arc-shaped block 7 and the placement frame 4. The angle between the square steel pipes 5 can be adjusted according to needs to meet various welding requirements. Through the cooperation of the clamping column 16 and the clamping groove 17, it is ensured that the placement frame 4 remains stable at the adjusted angle and is not easy to shake. The angle adjustment can be completed only by simply pulling the connecting plate 15, and the operation is convenient.

[0021] As Figure 3 , Figure 4As shown in the figure, the length adjustment mechanism further includes fixing frames 18 fixedly connected to the outer sides of the corresponding fixing blocks 8 at both ends of the placement frame 4. Hydraulic rods 19 are fixedly penetrated through both groups of fixing frames 18. Square plates 20 are fixedly connected to the telescopic ends of both groups of hydraulic rods 19. A plurality of fixing cones 21 for fixing the square frame 9 are fixedly connected to both sides of the mutually approaching ends of the two square plates 20. Guide grooves 23 are symmetrically opened at the mutually remote ends of the two fixing blocks 8. Guide posts 24 are arranged on the inner walls of each group of guide grooves 23. Each group of guide posts 24 and each square plate 20 are fixedly connected respectively. According to the length of the square steel pipe 5, the position of the square frame 9 on the fixing block 8 is adjusted. Then, the hydraulic rod 19 is started to push the square plate 20 to move in the mutually approaching direction. The fixing cones 21 will pierce into the outer surface of the square frame 9, thereby fixing the position of the square frame 9. At the same time, the guide posts 24 slide in the guide grooves 23 to ensure the stability of the square plate 20 during the movement process. It can be applicable to square steel pipes 5 of different lengths, improving the versatility of the welding device.

[0022] As Figure 5 , Figure 6 , Figure 7 shown in the figure, the inner clamping mechanism includes square grooves 25 opened at the mutually remote ends of the placement seat 11. Telescopic holes 26 are penetrated through the four sides of each square groove 25. Clamping columns 27 for clamping and fixing from the inner side of the square steel pipe 5 are arranged on the inner walls of each telescopic hole 26. Inclined surfaces are arranged at the mutually remote ends of the two groups of clamping columns 27. Chute grooves 28 are opened at the sides of the two groups of telescopic holes 26 away from the limiting plate 10. Sliding blocks 29 are slidably connected to the inner walls of each chute groove 28. Springs 30 are fixedly connected between each group of sliding blocks 29 and the chute grooves 28. The inner clamping mechanism further includes U-shaped plates 31 fixedly connected to the mutually remote ends of the limiting plate 10. Electric push rods 32 are fixedly penetrated through both U-shaped plates 31. Square blocks 33 adapted to the shape of the square groove 25 are fixedly connected to the telescopic ends of the two electric push rods 32. When the square steel pipe 5 is placed on the placement seat 11, the electric push rod 32 is started to push the square block 33 to move towards the inner side of the square groove 25. The square block 33 will contact the inclined surface on the clamping column 27, causing the clamping column 27 to generate a force to move outwards, thereby clamping and fixing the square steel pipe 5. The design of the springs 30 and the sliding blocks 29 allows the clamping columns 27 to have a certain buffering and resetting ability when subjected to external forces, clamping from the inner side of the square steel pipe 5, ensuring that the steel pipe maintains a stable shape and position during the welding process, avoiding deformation of the outer wall of the square steel pipe 5 due to clamping, and ensuring the integrity of the outer wall of the square steel pipe 5.

[0023] As Figure 1 , Figure 2As shown in the figure, the moving mechanism includes a moving groove 34 formed at the top end of the base 1. One side of the inner wall of the moving groove 34 is rotatably connected to a bidirectional screw 35. One end of the base 1 is fixedly connected to a motor 36. The driving end of the motor 36 is fixedly connected to the bidirectional screw 35. Both sides of the outer wall of the bidirectional screw 35 are threadedly connected to moving seats 37 that are adapted to the shape of the moving groove 34. The two moving seats 37 are respectively fixedly connected to the two vertical plates 2. When the motor 36 is started, the bidirectional screw 35 will rotate and push or pull the moving seats 37 through the threading effect. Since the moving seats 37 are fixedly connected to the vertical plates 2, all the mechanisms on the vertical plates 2 will move accordingly. And a plurality of triangular blocks are fixedly connected between the vertical plates 2 and the moving seats 37, so that the vertical plates 2 and the moving seats 37 can be strengthened to ensure stability.

[0024] As Figure 1 、 Figure 2 shown in the figure, U-shaped seats 38 are fixedly connected to both sides of the middle part of the top end of the base 1 corresponding to the moving groove 34. A three-stage cylinder 39 is fixedly penetrated through the top end of the U-shaped seat 38. A grinding mechanism 40 is fixedly installed at the telescopic end of the three-stage cylinder 39. A telescopic structure 22 is fixedly connected between the U-shaped seat 38 and the grinding mechanism 40. The design of the three-stage cylinder 39 and the grinding mechanism 40 allows the cutting surface of the square steel pipe 5 to be ground during the moving process, improving the welding quality. The telescopic structure 22 is composed of a telescopic sleeve and a telescopic rod, which can change with the change of the grinding mechanism 40 and limit the grinding mechanism 40.

[0025] Working principle: First, pull the connecting plate 15 outward so that the clamping column 16 moves out of the range of the clamping groove 17. At this time, rotate the placing frame 4 around the center line of the rotating shaft 3, so that the angle between the placing frame 4 and the horizontal plane can be changed. After the placing frame 4 rotates to an appropriate angle, the telescopic column 13 makes a reset movement under the elastic reset action of the tension spring 14 and drives the connecting plate 15 to move towards the arc-shaped block 7. At this time, the clamping column 16 is inserted into the appropriate clamping groove 17 to complete the limit fixation of the arc-shaped block 7, thereby completing the limit fixation of the placing frame 4. Therefore, the angle between the square steel pipes 5 can be adjusted as needed, thereby improving the applicability and flexibility of the welding device; After placing the square steel pipe 5 cut as required in the placement frame 4 and sleeving it on the outer wall of the placement seat 11 at the same time, start the electric push rod 32 at this time to push the square block 33 to move towards the inside of the square groove 25. The square block 33 will contact the inclined surface on the clamping column 27, so that a force for the clamping column 27 to move outward can be generated, and the square steel pipe 5 can be clamped and fixed by the clamping column 27, so that the square steel pipe 5 is tightly fixed on the placement seat 11. At this time, start the three-stage cylinder 39 to drive the grinding mechanism 40 to move upward, and make the grinding mechanism 40 located between the two square steel pipes 5. At this time, push the limit plate 10 to make the cut surface of the square steel pipe 5 contact the grinding mechanism 40. Then start the hydraulic rod 19 to push the square plate 20 to move towards each other, and make the fixing cone 21 pierce the outer surface of the square frame 9 to complete the fixing of the square frame 9. Similarly, operate on the other side according to the above steps, so that the cut surfaces of the square steel pipes 5 on both sides are on the same horizontal plane, and square steel pipes 5 of different lengths can be welded together. At the same time, the cut surface is polished by the grinding mechanism 40 to make the cut surface smooth and flat, ensuring that the gap of the butting surface is tightly fitted, so as to ensure the welding effect and welding quality; After the grinding is completed, reverse-start the three-stage cylinder 39 to drive the grinding mechanism 40 to move downward to prevent affecting the butt joint of the square steel pipe 5. Then start the motor 36 to drive the bidirectional screw 35 to rotate, and through the thread effect of the bidirectional screw 35, the moving seat 37 can be moved towards each other, and the polished cut surfaces are closely butted together. Then pick up the brazing torch 41 from the placement rack and perform welding treatment on the butt joint of the square steel pipe 5.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for connecting a pipe of an electromechanical device, comprising a base (1), characterized in that: The top of the base (1) is provided with a moving mechanism, the moving mechanism is provided with an angle adjustment mechanism, and the angle adjustment mechanism is provided with a length adjustment mechanism and an inner clamping mechanism; The angle adjustment mechanism comprises a vertical plate (2), wherein two vertical plates (2) are symmetrically arranged, and a rotating shaft (3) is rotatably passed through the two vertical plates (2), and one end of each of the two rotating shafts (3) is fixedly connected to a placement frame (4), and the inner walls of the two placement frames (4) are provided with a square steel pipe (5), and the outer sides of the corresponding rotating shafts (3) on the two vertical plates (2) are penetrated by arc holes (6), and the inner walls of the two arc holes (6) are provided with arc blocks (7), and the two arc blocks (7) are respectively fixedly connected to the two placement frames (4), and the arc blocks (7) slide in the arc holes (6) to adjust the angle between the placement frame (4) and the horizontal plane; The length adjustment mechanism comprises fixed blocks (8) fixedly connected to the upper and lower ends of the placement frame (4); the outer walls of the two groups of the fixed blocks (8) are slidably connected to square frames (9); a limiting plate (10) is fixedly connected between the two groups of the square frames (9); one end of the two limiting plates (10) close to each other is fixedly connected to a placement seat (11) that matches the shape of the inner wall of the square steel pipe (5); and the distance between the limiting plate (10) and the placement frame (4) is adjusted according to the length of the square steel pipe (5).

2. A welding device for connecting a pipe of electromechanical equipment according to claim 1, characterized in that: The angle adjustment mechanism further comprises a telescopic slot (12) provided at the other end of the arc block (7), the inner walls of the two telescopic slots (12) being provided with telescopic columns (13), and a tension spring (14) being fixedly connected between each group of the telescopic columns (13) and the telescopic slots (12).

3. A welding device for connecting a pipe of electromechanical equipment according to claim 2, characterized in that: The other ends of the two telescopic columns (13) are fixedly connected to a connecting plate (15), and the ends of the two connecting plates (15) close to the vertical plates (2) are fixedly connected to clamping columns (16) on both sides corresponding to the telescopic columns (13), and the two vertical plates (2) are provided with a plurality of groups of clamping grooves (17) matching the shape of the clamping columns (16) on both sides corresponding to the arc-shaped holes (6).

4. A welding device for connecting a pipe of electromechanical equipment according to claim 3, characterized in that: The length adjustment mechanism also includes a fixing frame (18) fixedly connected to the outer sides of the corresponding fixing blocks (8) at both ends of the placement frame (4), and hydraulic rods (19) are fixedly passed through the two sets of the fixing frames (18), and the telescopic ends of the two sets of the hydraulic rods (19) are fixedly connected to square plates (20), and the two sets of the square plates (20) are fixedly connected to a plurality of fixing cones (21) for fixing the square frame (9) on both sides of one end close to each other.

5. A welding device for connecting a pipe of electromechanical equipment according to claim 4, characterized in that: The two groups of fixed blocks (8) are symmetrically provided with guide grooves (23) at one end away from each other, and the inner wall of each group of guide grooves (23) is provided with guide columns (24), and each group of guide columns (24) is fixedly connected to each square plate (20).

6. A welding device for connecting a pipe of electromechanical equipment according to claim 1, characterized in that: The inner clamping mechanism comprises a square groove (25) formed at one end of the placement seat (11) away from each other, each of the square grooves (25) is provided with telescopic holes (26) on four sides, and the inner wall of each telescopic hole (26) is provided with a clamping column (27) for clamping and fixing from the inner side of the square steel pipe (5), and two groups of the clamping columns (27) are provided with inclined surfaces at one end away from each other, and the two groups of the telescopic holes (26) are provided with a sliding groove (28) on one side away from the limit plate (10), and each sliding groove (28) is slidably connected to the inner wall of the sliding groove (28), and a spring (30) is fixedly connected between each group of the sliding blocks (29) and the sliding groove (28).

7. A welding device for connecting a pipe of electromechanical equipment according to claim 6, characterized in that: The inner clamping mechanism further comprises a U-shaped plate (31) fixedly connected to one end of the limit plate (10) that is away from each other, an electric push rod (32) is fixedly passed through the two U-shaped plates (31), and a square block (33) matching the shape of the square groove (25) is fixedly connected to the telescopic ends of the two electric push rods (32).

8. The welding device for connecting a pipe of an electromechanical device according to claim 1, characterized in that: The moving mechanism comprises a moving groove (34) provided at the top of the base (1); a bidirectional screw (35) is rotatably connected to one side of the inner wall of the moving groove (34); a motor (36) is fixedly connected to one end of the base (1); a driving end of the motor (36) is fixedly connected to the bidirectional screw (35); both sides of the outer wall of the bidirectional screw (35) are threadedly connected to moving seats (37) that match the shape of the moving groove (34); and two moving seats (37) are fixedly connected to the two vertical plates (2) respectively.

9. A welding device for connecting a pipe of electromechanical equipment according to claim 8, characterized in that: A U-shaped seat (38) is fixedly connected to both sides of the movable groove (34) corresponding to the middle of the top of the base (1), a three-stage cylinder (39) is fixedly passed through the top of the U-shaped seat (38), a grinding mechanism (40) is fixedly installed at the telescopic end of the three-stage cylinder (39), and a telescopic structure (22) is fixedly connected between the U-shaped seat (38) and the grinding mechanism (40).

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