Building construction welding device and using method thereof

Abstract

The invention discloses a building construction welding device and a using method thereof, and relates to the technical field of welding, the building construction welding device comprises a base, a welding gun head is arranged at the top of the base, a rotating mechanism used for driving the welding gun head to rotate is arranged at the top of the base, and an inclining mechanism used for pushing down a welded hollow pipe is further arranged at the top of the base; the rotating mechanism comprises a supporting column fixedly connected to the top of the base, outer frame bodies are symmetrically and fixedly connected to the top of the supporting column, a plurality of connecting shafts are fixedly connected between the two outer frame bodies, limiting wheels are symmetrically and fixedly connected to the outer portion of each connecting shaft, and inner frame bodies are connected between the multiple limiting wheels in a rolling mode. The rotatable inner frame body is used for driving the welding gun head to rotate, fixing a pipe and moving the welding gun head, the requirement that a welder needs to frequently adjust the body posture or carry the pipe is reduced, physical output is reduced, meanwhile, the pipe is kept fixed, and errors caused by uneven movement or rotation of the pipe are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a construction welding device and a use method thereof. Background Art

[0002] Construction welding refers to the process of achieving atomic bonding between two or more metal components to form a permanent connection through heating or pressure (sometimes both) in construction projects. This technology is widely used in steel structures, reinforced concrete structures and other building parts that require metal connections.

[0003] During the construction process, welding equipment is sometimes used to weld building materials such as steel hollow pipes. When welding hollow pipes, if the circular butt weld between the pipes (i.e., the weld along the circumference of the pipe) is to be welded, the welder does not need to constantly adjust his posture to complete the circular butt weld. In this process, the welder's welding technology is required to be high, and it is difficult to ensure the consistency of the circular weld.

[0004] Therefore, the present invention provides a construction welding device and a method of using the same to compensate for and improve the deficiencies of the prior art. Summary of the invention

[0005] In view of the above problems, the invention provides a construction welding device and a method of using the same, which can effectively solve the problem of difficulty in welding hollow pipes in the prior art. In order to achieve the above objectives, the embodiment of the present application provides the following technical solutions:

[0006] The invention discloses a construction welding device, comprising a base, a welding gun head is arranged on the top of the base, a rotating mechanism for driving the welding gun head to rotate is arranged on the top of the base, and a tilting mechanism for pushing down a hollow pipe after welding is also arranged on the top of the base;

[0007] The rotating mechanism includes a pillar fixedly connected to the top of the base, an outer frame is symmetrically fixedly connected to the top of the pillar, a plurality of connecting shafts are fixedly connected between two of the outer frames, each of the connecting shafts is symmetrically fixedly connected to a limiting wheel on the outside, an inner frame is rollingly connected between the plurality of limiting wheels, a motor is fixedly connected to the side of the outer frame, an output end of the motor is fixedly connected to one end of the connecting shaft, a servo mechanism for maintaining a constant distance between the welding gun head and the hollow pipe is disposed inside the inner frame, and an impact mechanism for removing welding slag is also disposed inside the inner frame.

[0008] Furthermore, the outer frame is in a circular ring shape, and a notch is provided on the side of the outer frame. The inner frame is consistent in shape with the outer frame, and the diameter of the inner frame is smaller than that of the outer frame.

[0009] Furthermore, the servo mechanism includes a guide rod fixedly connected to the inner side of the inner frame, a mounting plate is slidably sleeved on the outside of the guide rod, a middle part of the mounting plate is fixedly connected to the welding gun head, and a first spring is sleeved on the outside of the guide rod between the inner frame and the mounting plate.

[0010] Furthermore, the bottom of the mounting plate is symmetrically fixedly connected with vertical rods, each vertical rod side is rotatably connected with a cross rod, one end of the cross rod away from the vertical rod is fixedly connected with a first roller, and the bottom of the first roller and the bottom of the welding gun head are on the same axis.

[0011] Furthermore, the impact mechanism includes a vertical plate fixedly connected to the side of the mounting plate, the side of the vertical plate is slidably connected to a sliding rod, one end of the sliding rod close to the welding gun head is fixedly connected to a hammer head, and a second spring is sleeved on the outside of the sliding rod between the hammer head and the vertical plate.

[0012] Furthermore, the sliding rod is fixedly connected to a V-shaped connecting rod at one end away from the hammer head, the vertical plate is symmetrically slidably connected to the first push rod, one end of each of the first push rods is arc-shaped, the other end of each of the first push rods is fixedly connected to the V-shaped connecting rod, and a cam is fixedly connected to the side of each cross bar, and the cam matches the arc-shaped end of the first push rod.

[0013] Furthermore, the tilting mechanism includes a mounting frame symmetrically fixedly connected to the top of the base, each mounting frame having an L-shaped support plate rotatably connected to the top for placing hollow pipes, the mounting frame having an L-shaped plate rotatably connected to the top, the horizontal section of the L-shaped plate being rotatably connected to a connecting rod, the connecting rod being rotatably connected to the vertical section of the L-shaped support plate at one end away from the L-shaped plate, a sliding groove being provided in the vertical section of the L-shaped plate, a second push rod being slidably connected to the top of the mounting frame, the second push rod passing through the sliding groove, a first limit block being fixedly connected to the outside of the second push rod, and the mounting frame is also provided with a pressing mechanism for fixing the hollow pipes.

[0014] Furthermore, the pressing mechanism includes an extrusion plate fixedly connected to the horizontal section of the L-shaped plate, and a third spring is sleeved on the outside of the second push rod, and the third spring is located on a side of the sliding slot away from the first limit block.

[0015] Furthermore, each of the second push rods is fixedly connected to a second limit block at one end, the second push rod is fixedly connected to a first cross plate at one end away from the second limit block, the other end of the first cross plate is fixedly connected to another second push rod, the first cross plate is symmetrically fixedly connected to a second cross plate on the side surface, each second cross plate is rotatably connected to a second roller on the side surface, each of the second rollers is located on the inner side of the inner frame, and each of the inner frames is fixedly connected to an arc block on the inner side.

[0016] A method for using a construction welding device comprises the following steps:

[0017] S1. Place the pipes: Place the two hollow pipes to be welded on the bracket so that the joint of the two hollow pipes is directly below the welding head;

[0018] S2. Pipe welding: Use a welding gun to weld the joints of two hollow pipes. During the welding process, the welding gun is rotated by a rotating mechanism;

[0019] S3. Remove welding slag: During the welding process, the rotating mechanism drives the impact mechanism to hit the weld to remove the welding slag;

[0020] S4. Remove the pipe: After welding is completed, push the pipe off the bracket and check the quality of the weld.

[0021] Beneficial effects:

[0022] 1. This device is provided with a rotating mechanism. When welding hollow pipes, the rotatable inner frame is used to drive the welding gun head to rotate. The pipe is fixed and the welding gun head is moved, which reduces the need for the welder to frequently adjust the body posture or carry the pipe. At the same time, the pipe is kept fixed and the error caused by uneven movement or rotation of the pipe is reduced.

[0023] 2. This device is provided with a servo mechanism. When welding a rectangular hollow tube, the first roller moves along the surface of the rectangular tube, so that the distance from the welding gun head to the weld remains unchanged, which can ensure that each section of the weld receives the same heat input and amount of filling material, thereby forming a more uniform weld. The uniform welding process helps to reduce pores, cracks and other defects that may affect the strength and durability of the weld.

[0024] 3. This device is provided with an impact mechanism. During the rotation of the welding gun head, the servo mechanism is used to drive the hammer head to move back and forth. During this process, the hammer head continuously hits the weld. During the hammer welding process, the repeated impact of the hammer head can help release the thermal stress generated during welding, thereby reducing welding deformation and stress concentration, and improving the overall stability of the weld. At the same time, the impact of the hammer head can help shake off the incompletely melted slag from the weld surface, thereby reducing the problem of slag being wrapped inside the weld to form slag inclusion defects.

[0025] 4. The device is provided with a tiltable L-shaped support plate. During welding, the L-shaped support plate can provide support for the hollow pipe. When welding is completed, the L-shaped support plate can be tilted to push the pipe down. The tilted L-shaped support plate can quickly and smoothly remove the welded pipe from the work platform, realizing a smoother production process.

[0026] 5. This device is provided with an extrusion plate that rotates together with the L-shaped plate. When the L-shaped plate rotates, the hollow pipe can be pressed down and fixed on the L-shaped support plate. The fixed pipe can maintain a stable position, so that the position of the welding gun head and the pipe remains consistent during the entire welding process, thereby forming a uniform and high-quality weld. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a three-dimensional structural diagram of the present invention from a first viewing angle.

[0029] Figure 2 It is a three-dimensional structural diagram of the present invention from a second viewing angle.

[0030] Figure 3 It is a three-dimensional structural diagram of the rotating mechanism in the present invention.

[0031] Figure 4 For the present invention Figure 3 A magnified view of the structure in FIG.

[0032] Figure 5 It is a three-dimensional structural diagram of the servo mechanism in the present invention.

[0033] Figure 6 For the present invention Figure 5 A magnified view of the structure at B in FIG.

[0034] Figure 7 It is a three-dimensional structural diagram of the tilting mechanism in the present invention.

[0035] Figure 8 It is a three-dimensional structural diagram of the pressing mechanism in the present invention.

[0036] The numbers in the figure represent: 10, base; 20, welding gun head; 30, rotating mechanism; 301, outer frame; 302, connecting shaft; 303, limiting wheel; 304, inner frame; 305, support; 306, motor; 40, servo mechanism; 401, guide rod; 402, mounting plate; 403, first spring; 404, vertical rod; 405, horizontal rod; 406, first roller; 50, impact mechanism; 501, vertical plate; 502, sliding rod; 503, hammer head; 504, second spring; 505, V-shaped connecting rod; 506, first push rod; 507, cam; 60, tilting mechanism; 601, mounting frame; 602, L-shaped support plate; 603, L-shaped plate; 604, connecting rod; 605, slide groove; 606, second push rod; 607, first limit block; 70, pressing mechanism; 701, extrusion plate; 702, third spring; 703, second limit block; 704, first horizontal plate; 705, second horizontal plate; 706, second roller; 707, arc block. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] The present invention will be further described below in conjunction with the embodiments.

[0039] See also Figures 1 to 8 A construction welding device of this embodiment includes a base 10, a welding gun head 20 is arranged on the top of the base 10, a rotating mechanism 30 for driving the welding gun head 20 to rotate is arranged on the top of the base 10, and a tilting mechanism 60 for pushing down the hollow pipe after welding is also arranged on the top of the base 10;

[0040] The rotating mechanism 30 includes a pillar 305 fixedly connected to the top of the base 10, an outer frame 301 is symmetrically fixedly connected to the top of the pillar 305, a plurality of connecting shafts 302 are fixedly connected between the two outer frames 301, each connecting shaft 302 is symmetrically fixedly connected to a limiting wheel 303 on the outside, an inner frame 304 is rollingly connected between the plurality of limiting wheels 303, a motor 306 is fixedly connected to the side of the outer frame 301, an output end of the motor 306 is fixedly connected to one end of the connecting shaft 302, a servo mechanism 40 for keeping the distance between the welding gun head 20 and the hollow pipe unchanged is arranged inside the inner frame 304, an impact mechanism 50 for removing welding slag is also arranged inside the inner frame 304, there are two motors 306, and the two motors 306 are connected to the two connecting shafts 302 farthest from each other;

[0041] The outer frame 301 is in a circular shape, and a notch is opened on the side of the outer frame 301 . The inner frame 304 is consistent in shape with the outer frame 301 , and the diameter of the inner frame 304 is smaller than that of the outer frame 301 .

[0042] During specific work, the two hollow pipes to be welded are aligned so that the joints of the two hollow pipes are aligned with the welding gun head 20, and then the two motors 306 are started to drive the two connecting shafts 302 to rotate. The two connecting shafts 302 drive the inner frame 304 to rotate one circle inside the outer frame 301 through the limiting wheels 303. The rotatable inner frame 304 is used to drive the welding gun head 20 to rotate. Fixing the pipe and moving the welding gun head 20 reduces the need for the welder to frequently adjust his body posture or carry the pipe, thereby reducing physical exertion.

[0043] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The servo mechanism 40 includes a guide rod 401 fixedly connected to the inner side of the inner frame 304, a mounting plate 402 is slidably sleeved on the outer side of the guide rod 401, a middle part of the mounting plate 402 is fixedly connected to the welding gun head 20, and a first spring 403 is sleeved on the outer side of the guide rod 401 between the inner frame 304 and the mounting plate 402;

[0044] The bottom of the mounting plate 402 is symmetrically fixedly connected with vertical rods 404, each vertical rod 404 is rotatably connected to a cross rod 405 on the side, and the cross rod 405 is fixedly connected to a first roller 406 at one end away from the vertical rod 404, and the bottom of the first roller 406 is on the same axis as the bottom of the welding gun head 20.

[0045] During specific operation, the first roller 406 rolls along the surface of the hollow tube during the rotation of the inner frame 304. When welding the rectangular hollow tube, the first roller 406 also rolls along the surface of the tube. At the same time, under the push of the elastic force of the first spring 403, the mounting plate 402 moves along the guide rod 401, so that the distance from the welding gun head 20 to the weld remains unchanged, which can ensure that each section of the weld receives the same heat input and amount of filling material, thereby forming a more uniform weld. The uniform welding process helps to reduce pores, cracks and other defects that may affect the strength and durability of the weld.

[0046] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 The impact mechanism 50 includes a vertical plate 501 fixedly connected to the side of the mounting plate 402, a sliding rod 502 is slidably connected to the side of the vertical plate 501, a hammer head 503 is fixedly connected to one end of the sliding rod 502 close to the welding gun head 20, and a second spring 504 is sleeved on the outside of the sliding rod 502 between the hammer head 503 and the vertical plate 501.

[0047] The sliding rod 502 is fixedly connected to a V-shaped connecting rod 505 at one end away from the hammer head 503, and the vertical plate 501 is symmetrically slidably connected to the first push rod 506. One end of each first push rod 506 is arc-shaped, and the other end of each first push rod 506 is fixedly connected to the V-shaped connecting rod 505. A cam 507 is fixedly connected to the side of each cross bar 405, and the cam 507 matches the arc-shaped end of the first push rod 506.

[0048] During specific operation, when the first roller 406 rotates, the first roller 406 synchronously drives the cross bar 405 to rotate, and the rotating cross bar 405 drives the cam 507 to squeeze onto the arc-shaped end of the first push rod 506, so that the first push rod 506 drives the slide bar 502 to synchronously move away from the pipe through the V-shaped connecting rod 505. At this time, the second spring 504 is squeezed and charged by the hammer head 503 and the vertical plate 501. When the arc-shaped end of the first push rod 506 is out of contact with the cam 507, the hammer head 503 hits the weld of the pipe under the push of the elastic force of the second spring 504. During the hammer welding process, the repeated impacts of the hammer head 503 can help release the thermal stress generated during welding, thereby reducing welding deformation and stress concentration. At the same time, the impact of the hammer head 503 can help shake off the incompletely melted slag from the weld surface, thereby reducing the problem of slag inclusion defects formed by being wrapped inside the weld.

[0049] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 The tilting mechanism 60 includes a mounting frame 601 symmetrically fixedly connected to the top of the base 10, each mounting frame 601 is rotatably connected to an L-shaped support plate 602 for placing hollow pipes at the top, the mounting frame 601 is rotatably connected to an L-shaped plate 603 at the top, the horizontal section of the L-shaped plate 603 is rotatably connected to a connecting rod 604, the connecting rod 604 is rotatably connected to the vertical section of the L-shaped support plate 602 at one end away from the L-shaped plate 603, the vertical section of the L-shaped plate 603 is provided with a slide groove 605, a second push rod 606 is slidably connected to the top of the mounting frame 601, the second push rod 606 passes through the slide groove 605, and the second push rod 606 is fixedly connected to the outside with a first limit block 607, and the mounting frame 601 is also provided with a pressing mechanism 70 for fixing the hollow pipe.

[0050] During specific work, when welding, the two hollow pipes are placed on two L-shaped support plates 602 respectively. After welding is completed, that is, when the inner frame 304 rotates one circle, the second push rod 606 pushes the L-shaped plate 603 to rotate on the mounting frame 601 through the first limit block 607. At this time, the horizontal section of the L-shaped plate 603 drives the L-shaped support plate 602 to rotate along the mounting frame 601 through the connecting rod 604, so that the L-shaped support plate 602 is in an inclined state. At this time, the hollow pipe after welding slides off the inclined L-shaped support plate 602, and the inclined L-shaped support plate 602 can quickly and smoothly remove the welded pipe from the work platform, realizing a smoother production process.

[0051] See also Figure 1 , Figure 2 , Figure 7 and Figure 8 The pressing mechanism 70 includes an extrusion plate 701 fixedly connected to the horizontal section of the L-shaped plate 603 , and a third spring 702 is sleeved on the outside of the second push rod 606 , and the third spring 702 is located on the side of the slide slot 605 away from the first limit block 607 .

[0052] One end of each second push rod 606 is fixedly connected to the second limit block 703, one end of the second push rod 606 away from the second limit block 703 is fixedly connected to the first cross plate 704, the other end of the first cross plate 704 is fixedly connected to another second push rod 606, the side of the first cross plate 704 is symmetrically fixedly connected to the second cross plate 705, each second cross plate 705 is rotatably connected to the side of the second roller 706, each second roller 706 is located on the inner side of the inner frame 304, and each inner side of the inner frame 304 is fixedly connected to an arc block 707.

[0053] During specific operation, before welding, when the hollow tube is placed on the L-shaped support plate 602, the third spring 702 pushes the vertical section of the L-shaped plate 603 to the direction of the first limit block 607, so that the horizontal section of the L-shaped plate 603 is close to the top of the hollow tube, so that the extrusion plate 701 located at the horizontal section of the L-shaped plate 603 presses the hollow tube down on the L-shaped support plate 602 to fix the centered tube. The fixed tube can maintain a stable position, so that the position of the welding gun head 20 and the tube is kept consistent during the entire welding process, and the tube is kept fixed, which reduces the error caused by the movement or uneven rotation of the tube. When the welding is completed, that is, the inner frame 304 rotates a After the circle, the arc block 707 on the inner side of the inner frame 304 pushes the second roller 706, and the second roller 706 synchronously drives the two second push rods 606 to move through the second cross plate 705 and the first cross plate 704, and the second push rod 606 first pushes the L-shaped plate 603 to rotate on the mounting frame 601 through the first limit block 607. At this time, the horizontal section of the L-shaped plate 603 drives the L-shaped support plate 602 to rotate along the mounting frame 601 through the connecting rod 604, so that the L-shaped support plate 602 is in an inclined state. While the horizontal section of the L-shaped plate 603 rotates, the horizontal section of the L-shaped plate 603 drives the extrusion plate 701 to release the downward pressure on the hollow pipe, and then the L-shaped support plate 602 tilts to slide the welded hollow pipe.

[0054] A method for using a construction welding device comprises the following steps:

[0055] S1. Place pipes: Place the two hollow pipes to be welded on the bracket so that the joint of the two hollow pipes is directly below the welding head. Before welding, place the two hollow pipes on the L-shaped support plate 602 and fix the hollow pipes by the pressing mechanism 70.

[0056] S2. Welding pipes: Use a welding gun to weld the joints of two hollow pipes. During the welding process, the welding gun is driven to rotate by the rotating mechanism 30. During welding, the rotating mechanism 30 drives the welding gun head 20 to rotate. During welding, the servo mechanism 40 keeps the distance between the welding gun head 20 and the weld consistent.

[0057] S3. Removing welding slag: During the welding process, the rotating mechanism 30 drives the impact mechanism 50 to hit the weld to remove the welding slag. While welding, the impact mechanism 50 improves the quality of the weld. After welding is completed, the inner frame 304 simultaneously releases the downward pressure fixation of the hollow tube by the downward pressure mechanism 70.

[0058] S4. Remove the pipe: After welding is completed, push the pipe off the bracket and check the quality of the weld. The pressing mechanism 70 drives the tilting mechanism 60 at the same time, so that the L-shaped support plate 602 tilts and slides the welded hollow pipe.

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A construction welding device, characterized in that: The invention comprises a base (10), a welding gun head (20) is arranged on the top of the base (10), a rotating mechanism (30) is arranged on the top of the base (10) for driving the welding gun head (20) to rotate, and a tilting mechanism (60) is also arranged on the top of the base (10) for pushing down the hollow pipe after welding; The rotating mechanism (30) comprises a pillar (305) fixedly connected to the top of the base (10); an outer frame (301) is symmetrically fixedly connected to the top of the pillar (305); a plurality of connecting shafts (302) are fixedly connected between two of the outer frames (301); a limiting wheel (303) is symmetrically fixedly connected to the outside of each connecting shaft (302); an inner frame (304) is rollingly connected between the plurality of limiting wheels (303); a motor (306) is fixedly connected to the side of the outer frame (301); an output end of the motor (306) is fixedly connected to one end of the connecting shaft (302); a servo mechanism (40) for maintaining a constant distance between the welding gun head (20) and the hollow pipe is disposed inside the inner frame (304); and an impact mechanism (50) for removing welding slag is also disposed inside the inner frame (304).

2. A construction welding device according to claim 1, characterized in that: The outer frame (301) is in the shape of a ring, and a notch is provided on the side of the outer frame (301); the inner frame (304) is consistent in shape with the outer frame (301), and the diameter of the inner frame (304) is smaller than that of the outer frame (301).

3. A construction welding device according to claim 2, characterized in that: The servo mechanism (40) comprises a guide rod (401) fixedly connected to the inner side of the inner frame (304); a mounting plate (402) is slidably sleeved on the outside of the guide rod (401); a middle portion of the mounting plate (402) is fixedly connected to the welding gun head (20); and a first spring (403) is sleeved on the outside of the guide rod (401) between the inner frame (304) and the mounting plate (402).

4. A construction welding device according to claim 3, characterized in that: The bottom of the mounting plate (402) is symmetrically fixedly connected to vertical rods (404), and each of the vertical rods (404) is rotatably connected to a cross rod (405) on its side. One end of the cross rod (405) away from the vertical rod (404) is fixedly connected to a first roller (406), and the bottom of the first roller (406) is on the same axis as the bottom of the welding gun head (20).

5. A construction welding device according to claim 4, characterized in that: The impact mechanism (50) comprises a vertical plate (501) fixedly connected to the side of the mounting plate (402), a sliding rod (502) slidably connected to the side of the vertical plate (501), a hammer head (503) fixedly connected to one end of the sliding rod (502) close to the welding gun head (20), and a second spring (504) is sleeved on the outside of the sliding rod (502) between the hammer head (503) and the vertical plate (501).

6. A construction welding device according to claim 5, characterized in that: The end of the sliding rod (502) away from the hammer head (503) is fixedly connected to a V-shaped connecting rod (505), and the vertical plate (501) is symmetrically slidably connected to a first push rod (506), one end of each of the first push rods (506) is arc-shaped, and the other end of each of the first push rods (506) is fixedly connected to the V-shaped connecting rod (505), and a cam (507) is fixedly connected to the side of each of the cross bars (405), and the cam (507) matches the arc-shaped end of the first push rod (506).

7. A construction welding device according to claim 6, characterized in that: The tilting mechanism (60) comprises a mounting frame (601) symmetrically fixedly connected to the top of the base (10); each mounting frame (601) is rotatably connected to an L-shaped support plate (602) for placing hollow pipes at the top; the mounting frame (601) is rotatably connected to an L-shaped plate (603) at the top; the horizontal section of the L-shaped plate (603) is rotatably connected to a connecting rod (604); the connecting rod (604) is rotatably connected to the vertical section of the L-shaped support plate (602) at one end away from the L-shaped plate (603); a sliding groove (605) is provided in the vertical section of the L-shaped plate (603); a second push rod (606) is slidably connected to the top of the mounting frame (601); the second push rod (606) passes through the sliding groove (605); the second push rod (606) is fixedly connected to the outside with a first limit block (607); and the mounting frame (601) is also provided with a pressing mechanism (70) for fixing the hollow pipes.

8. A construction welding device according to claim 7, characterized in that: The pressing mechanism (70) comprises an extrusion plate (701) fixedly connected to the horizontal section of the L-shaped plate (603); a third spring (702) is sleeved on the outside of the second push rod (606); and the third spring (702) is located on a side of the slide groove (605) away from the first limit block (607).

9. A construction welding device according to claim 8, characterized in that: One end of each second push rod (606) is fixedly connected to a second limit block (703), one end of the second push rod (606) away from the second limit block (703) is fixedly connected to a first cross plate (704), the other end of the first cross plate (704) is fixedly connected to another second push rod (606), the first cross plate (704) is symmetrically fixedly connected to a second cross plate (705) on the side, each second cross plate (705) is rotatably connected to a second roller (706) on the side, each second roller (706) is located on the inner side of the inner frame (304), and each inner side of the inner frame (304) is fixedly connected to an arc block (707).

10. A method for using a construction welding device according to claim 9, characterized in that: The following steps are involved: S1. Place the pipes: Place the two hollow pipes to be welded on the bracket so that the joint of the two hollow pipes is directly below the welding head; S2. Welding pipes: using a welding gun to weld the joints of two hollow pipes, and during the welding process, the welding gun is driven to rotate by a rotating mechanism (30); S3. Removing welding slag: During the welding process, the rotating mechanism (30) drives the impact mechanism (50) to strike the weld to remove the welding slag; S4. Remove the pipe: After welding is completed, push the pipe off the bracket and check the quality of the weld.

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