Steel structure welding device for building construction

Abstract

The invention relates to the technical field of building construction, and discloses a steel structure welding device for building construction, which comprises a bottom frame, the outer surface of the bottom frame is fixedly connected with a clamping mechanism, a square tube is clamped in the clamping mechanism, and the outer surface of the clamping mechanism is fixedly connected with a welding mechanism. The outer surface of the clamping mechanism is fixedly connected with a scraping mechanism, a first torsional spring is arranged to drive a first arc-shaped frame, a welding gun is made to be attached to the surface of the square pipe all the time, and tight welding can be conducted at the corner. The magnetic suction plate drives the rotating frame through magnetic force to ensure that the welding gun is perpendicular to the surface of the square tube, and welding quality is improved. The roller is matched with the magnetic component to realize stable sliding of the welding gun on the surface of the square tube; the arc-shaped plate drives the scraper to cling to the lower part of the square tube under the elastic action of the torsional spring to continuously remove surface impurities, thereby avoiding influencing the welding quality and ensuring the welding effect.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a steel structure welding device for building construction. Background Art

[0002] In the field of modern construction engineering, steel structures are widely used due to their advantages such as high strength and light weight. The quality of their welding directly affects the overall performance. Construction, as a key link in transforming design into physical objects, often requires welding of steel structures. Therefore, reliable steel structure welding equipment has become an important equipment to ensure construction quality and efficiency.

[0003] The patent application with application number CN202210839403.X discloses a steel structure welding device for construction, including a supporting base plate, a supporting top plate is provided on one side of the supporting base plate, and supporting side plates for fixing the supporting top plate are provided at both ends of the supporting base plate. The supporting base plate is fixedly connected to a limiting slide rail on the side facing the supporting top plate, and the two ends of the limiting slide rail are slidably connected with a clamping mechanism for fixing the workpiece, and a welding mechanism is provided on the side of the supporting top plate facing the supporting base plate.

[0004] However, this patent also has the following shortcomings, that is, when welding square tubes, especially corner welding, the existing devices have obvious shortcomings. During the welding process, it is difficult to ensure that the welding gun always fits the surface of the square tube, and gaps are likely to appear at the corners, and the welding is not firm. At the same time, most devices cannot adjust the welding gun angle in real time, and it is difficult to ensure that it is perpendicular to the surface of the square tube, resulting in a decrease in welding quality. In response to this situation, a steel structure welding device for construction is specially proposed. Summary of the Invention

[0005] The object of the present invention is to provide a steel structure welding device for building construction to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A steel structure welding device for construction, comprising a base frame, a clamping mechanism fixedly connected to the outer surface of the base frame, a square tube clamped inside the clamping mechanism, a welding mechanism fixedly connected to the outer surface of the clamping mechanism, and the welding mechanism comprising:

[0007] A limiting ring, wherein the outer surface of the limiting ring is fixedly connected to a torsion spring 1, the outer surface of the torsion spring 1 is fixedly connected to an arc frame 1, and the torsion spring 1 is used to twist the arc frame 1;

[0008] Arc frame 2, wherein the interior of the arc frame 2 is rotatably connected to a rotating frame, the upper surface of the rotating frame is fixedly connected to a spring, the upper surface of the spring is fixedly connected to a welding gun, and the welding gun is used to weld the square pipe;

[0009] The outer surface of the rotating column is fixedly connected with a magnetic plate, the outer surface of the second arc-shaped frame is rotatably connected with a roller, and the magnetic plate is used for rotating adjustment of the welding gun.

[0010] According to the technical scheme, the outer surface of the clamping mechanism is fixedly connected with a scraping mechanism, the inner portion of the rotating frame is provided with a rotating groove, the rotating groove is rotatably connected with the rotating column, the limiting ring is fixedly connected with the clamping mechanism, and the rotating groove is used for rotating limiting of the rotating column.

[0011] According to the technical scheme, the outer surface of the first arc-shaped frame is fixedly connected with a second arc-shaped frame, the spring is slidably connected with the rotating frame, the outer surface of the rotating groove is in contact with the outer surface of the rotating column, the outer surface of the second arc-shaped frame is rotatably connected with a roller, the roller is in contact with the outer surface of the square tube, and the roller is used for sliding of the welding gun.

[0012] According to the technical scheme, the clamping mechanism comprises a sliding frame, the sliding frame is fixedly connected with the base frame, the inner portion of the sliding frame is rotatably connected with a rotating ring, the inner portion of the rotating ring is screwedly connected with a first screw rod, the interval of the sliding frame is the same as the diameter of the first screw rod, and the sliding frame is used for rotating of the rotating ring.

[0013] According to the technical scheme, the clamping mechanism further comprises a first V-shaped clamping plate, the first V-shaped clamping plate is rotatably connected with the first screw rod, the outer surface of the first V-shaped clamping plate is clamped with a second V-shaped clamping plate, the inner portion of the second V-shaped clamping plate is rotatably connected with a second screw rod, the inner portion of the second V-shaped clamping plate is rotatably connected with a rotating sleeve one, the inner portion of the rotating sleeve one is screwedly connected with a third screw rod, the outer surface of the sliding frame is fixedly connected with a connecting rod, and the first V-shaped clamping plate and the second V-shaped clamping plate are used for limiting of the square tube.

[0014] According to the technical scheme, the outer surface of the first V-shaped clamping plate and the second V-shaped clamping plate is in contact with the outer surface of the square tube, the second screw rod is screwedly connected with the rotating ring, the third screw rod is screwedly connected with the first V-shaped clamping plate, the connecting rod is used for fixing of the sliding frame, and the third screw rod is used for fixing of the first V-shaped clamping plate and the second V-shaped clamping plate.

[0015] According to the technical scheme, the scraping mechanism comprises a second torsional spring, the second torsional spring is fixedly connected with the connecting rod, the outer surface of the second torsional spring is fixedly connected with an arc-shaped plate, the outer surface of the arc-shaped plate is fixedly connected with a scraping plate, the outer surface of the arc-shaped plate is fixedly connected with a through-hole plate, the inner portion of the through-hole plate is rotatably connected with a rotating sleeve two, the inner portion of the rotating sleeve two is screwedly connected with a fourth screw rod, and the fourth screw rod is used for limiting of the arc-shaped plate.

[0016] According to the technical scheme, the outer surface of the scraper is in contact with the outer surface of the square tube, the screw four is bolted with the arc-shaped plate, the torsional spring two is used for torsion of the arc-shaped plate, the scraper is located below the square tube, and the scraper is used for scraping the square tube.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] 1. The steel structure welding device for building construction is provided with a torsional spring one, which acts on the arc-shaped frame one to make it torsion, drives the welding gun to adhere to the surface of the square tube, and always adheres to the surface of the square tube during welding and can closely adhere to the corner of the square tube.

[0019] 2. The steel structure welding device for building construction is provided with a magnetic attraction plate, which is magnetically attracted to the square tube, so that the rotating frame drives the welding gun to rotate, and the welding gun is perpendicular to the surface of the square tube, so as to ensure the welding quality during the welding process.

[0020] 3. The steel structure welding device for building construction is provided with a roller, which is used for sliding on the surface of the welding part while the welding gun is perpendicular to the surface of the welding part, and the magnetic attraction assembly is used for attracting the square tube, so that the welding gun can continuously weld when welding at the corner of the welding part.

[0021] 4. The steel structure welding device for building construction is provided with an arc-shaped plate, so that the elastic force of the torsional spring makes it torsion, drives the scraper to closely adhere to the surface below the square tube, continuously scrapes off the impurities on the surface of the square tube, and avoids the influence of the impurities on the welding quality. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the main structure of the present application;

[0023] Figure 2 It is a schematic diagram of the main structure of the present application;

[0024] Figure 3 It is a schematic diagram of the clamping mechanism of the present application;

[0025] Figure 4 It is a schematic diagram of the V-shaped clamping plate of the present application;

[0026] Figure 5 It is a schematic diagram of the welding mechanism of the present application;

[0027] Figure 6 It is a schematic diagram of the welding mechanism of the present application;

[0028] Figure 7 It is a schematic diagram of the arc-shaped frame two of the present application;

[0029] Figure 8 It is a schematic diagram of the magnetic attraction plate of the present application;

[0030] Figure 9 Structure diagram of the scraping mechanism of the present application.

[0031] In the figure: 1, chassis; 2, square tube; 3, clamping mechanism; 31, sliding frame; 32, rotating ring; 33, screw one; 34, V-shaped clamping plate one; 35, V-shaped clamping plate two; 36, screw two; 37, rotating sleeve one; 38, screw three; 39, connecting rod; 4, welding mechanism; 41, limiting ring; 42, torsional spring one; 43, arc-shaped frame one; 44, arc-shaped frame two; 45, rotating frame; 451, welding gun; 452, spring; 46, rotating groove; 47, rotating column; 48, magnetic plate; 49, roller; 5, scraping mechanism; 51, torsional spring two; 52, arc-shaped plate; 53, scraper; 54, through-hole plate; 55, rotating sleeve two; 56, screw four. 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 some of the embodiments of the present application, not all the embodiments of the present application.

[0033] Examples of the described embodiments are shown in the drawings, in which the same or similar notations are used to denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the present application, unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting”, “fixing” and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Embodiment one: refer to Figures 1-4 The present application provides a technical solution: a steel structure welding device for building construction, comprising a chassis 1, the outer surface of the chassis 1 is fixedly connected with a clamping mechanism 3, the inside of the clamping mechanism 3 is clamped with a square tube 2, the outer surface of the clamping mechanism 3 is fixedly connected with a welding mechanism 4, the welding mechanism 4 comprises:

[0036] A limiting ring 41, the outer surface of the limiting ring 41 is fixedly connected with a torsional spring one 42, the outer surface of the torsional spring one 42 is fixedly connected with an arc-shaped frame one 43, the torsional spring one 42 is used for torsion of the arc-shaped frame one 43;

[0037] The arc-shaped frame two 44 is rotatably connected with a rotating frame 45 in the interior of the arc-shaped frame two 44, the upper surface of the rotating frame 45 is fixedly connected with a spring 452, the upper surface of the spring 452 is fixedly connected with a welding gun 451, and the welding gun 451 is used for welding the square tube 2;

[0038] The outer surface of the rotating column 47 is fixedly connected with a magnetic plate 48, the outer surface of the arc-shaped frame two 44 is rotatably connected with a roller 49, and the magnetic plate 48 is used for rotating adjustment of the welding gun 451.

[0039] The outer surface of the clamping mechanism 3 is fixedly connected with a scraping mechanism 5, the interior of the rotating frame 45 is provided with a rotating groove 46, the rotating groove 46 is rotatably connected with the rotating column 47, the limiting ring 41 is fixedly connected with the clamping mechanism 3, and the rotating groove 46 is used for rotating limiting of the rotating column 47.

[0040] The outer surface of the arc-shaped frame one 43 is fixedly connected with the arc-shaped frame two 44, the spring 452 is slidably connected with the rotating frame 45, the outer surface of the rotating groove 46 is in contact with the outer surface of the rotating column 47, the outer surface of the arc-shaped frame two 44 is rotatably connected with the roller 49, the roller 49 is in contact with the outer surface of the square tube 2, the roller 49 is used for sliding of the welding gun 451, the inclination angle of the rotating groove 46 is 45°, so that the rotating column 47 is rotated when the square tube 2 is in the plane, the magnetic plate 48 is parallel to the surface of the square tube 2, the upper part of the rotating groove 46 is closed, and the welding slag is prevented from falling into the rotating groove 46 and blocking the rotation of the rotating column 47.

[0041] When the corner welding of the square tube 2 is performed, the welding gun 451 slides at the corner of the square tube 2, so that the quality of continuous welding on the surface of the square tube 2 is reduced, and therefore the welding mechanism 4 is needed to assist the corner welding of the square tube 2, so that the welding gun 451 can stably pass through the corner during welding.

[0042] The clamping mechanism 3 comprises a sliding frame 31, the sliding frame 31 is fixedly connected with the base frame 1, the interior of the sliding frame 31 is rotatably connected with a rotating ring 32, the interior of the rotating ring 32 is threadedly connected with a screw rod one 33, the interval of the sliding frame 31 is the same as the diameter of the screw rod one 33, and the sliding frame 31 is used for rotating the rotating ring 32.

[0043] The clamping mechanism 3 further comprises a V-shaped clamping plate one 34, the V-shaped clamping plate one 34 is rotatably connected with the screw rod one 33, the outer surface of the V-shaped clamping plate one 34 is clamped with a V-shaped clamping plate two 35, the interior of the V-shaped clamping plate two 35 is rotatably connected with a screw rod two 36, the interior of the V-shaped clamping plate two 35 is rotatably connected with a rotating sleeve one 37, the interior of the rotating sleeve one 37 is threadedly connected with a screw rod three 38, the outer surface of the sliding frame 31 is fixedly connected with a connecting rod 39, and the V-shaped clamping plate one 34 and the V-shaped clamping plate two 35 are used for limiting the square tube 2.

[0044] The outer surface of the V-shaped clamping plate one 34 and the V-shaped clamping plate two 35 is in contact with the outer surface of the square tube 2, the screw two 36 is in threaded connection with the rotating ring 32, the screw three 38 is in threaded connection with the V-shaped clamping plate one 34, the connecting rod 39 is used for fixing the sliding frame 31, the screw three 38 is used for fixing the V-shaped clamping plate one 34 and the V-shaped clamping plate two 35, when the square tube 2 is clamped by the screw one 33, the square tube 2 is supported by the high foot support of the base 1, so that the screw one 33 is not in contact with the ground when the screw one 33 rotates, the screw three 38 is in rotating connection with the V-shaped clamping plate two 35 by the rotating sleeve one 37, so that the V-shaped clamping plate one 34 and the V-shaped clamping plate two 35 clamp the square tube 2 by the rotation of the rotating sleeve one 37.

[0045] When the corner welding of the square tube 2 is carried out by the welding mechanism 4, if the square tube 2 is not rotated, the welding quality of the square tube 2 is affected, so the clamping mechanism 3 is needed to clamp the square tube 2, and the rotating ring 32 is used to rotate the square tube 2, so that the square tube 2 can be welded.

[0046] The working principle of the embodiment is as follows: when the steel structure welding device for building construction is used, the square tube 2 is placed in the center of the V-shaped clamping plate one 34 and the V-shaped clamping plate two 35, the screw three 38 is rotated to drive the V-shaped clamping plate two 35 to move inward, the square tube 2 is clamped by the V-shaped clamping plate one 34 and the V-shaped clamping plate two 35, the square tube 2 is clamped by the screw one 33 and the V-shaped clamping plate one 34, the square tube 2 is limited by the screw one 33 and the rotating ring 32 and the V-shaped clamping plate one 34 and the rotating ring 32, at this time the torsional spring one 42 is twisted to the arc-shaped frame one 43, the welding gun 451 is above the square tube 2, the welding gun 451 is in contact with the surface of the square tube 2 by the spring 452, at this time the magnetic plate 48 is magnetically attracted to the square tube 2, the rotating column 47 is rotated around the rotating groove 46, the rotating frame 45 is rotated in the arc-shaped frame two 44 by the contact between the rotating column 47 and the rotating groove 46, so that the welding gun 451 is tightly attached to the surface of the square tube 2, at this time the rotating ring 32 is rotated in the sliding frame 31, the screw one 33 is slid in the sliding groove of the sliding frame 31, so that the square tube 2 is rotated, the roller 49 is in contact with the surface of the square tube 2 and rotates by the magnetic attraction of the magnetic plate 48, when the corner of the square tube 2 is passed, the rotating column 47 is rotated around the rotating groove 46 by the magnetic attraction of the magnetic plate 48, so that the magnetic plate 48 is parallel to the surface of the square tube 2, the rotating frame 45 is rotated around the arc-shaped frame two 44 by the rotating column 47, so that the welding gun 451 is perpendicular to the surface of the square tube 2, so that the welding gun 451 continuously welds the corner of the square tube 2, at this time the surface of the square tube 2 is continuously welded by the rotation of the rotating ring 32.

[0047] Embodiment two: please refer toFigures 5-9 On the basis of embodiment one, the application provides technical solutions: the scraping mechanism 5 comprises a torsion spring two 51, the torsion spring two 51 is fixedly connected with the connecting rod 39, the outer surface of the torsion spring two 51 is fixedly connected with an arc-shaped plate 52, the outer surface of the arc-shaped plate 52 is fixedly connected with a scraper 53, the outer surface of the arc-shaped plate 52 is fixedly connected with a through-hole plate 54, the inside of the through-hole plate 54 is rotatably connected with a rotating sleeve two 55, the inside of the rotating sleeve two 55 is screwedly connected with a screw four 56, and the screw four 56 is used for limiting the arc-shaped plate 52.

[0048] The outer surface of the scraper 53 is in contact with the outer surface of the square tube 2, the screw four 56 is boltedly connected with the arc-shaped plate 52, the torsion spring two 51 is used for torsion of the arc-shaped plate 52, the scraper 53 is located below the square tube 2, and the scraper 53 is used for scraping the square tube 2; when the scraper 53 scrapes the surface of the square tube 2, the through-hole plate 54 supports the arc-shaped plate 52, so that the scraper 53 does not drive the arc-shaped plate 52 to deform, and meanwhile, the rotating sleeve two 55 and the screw four 56 are rotated to adjust the distance between the torsion spring two 51 and the through-hole plate 54.

[0049] When the square tube 2 is welded, if the surface of the square tube 2 is not treated, the welding gun 451 may slide on the surface of the square tube 2 when corner welding of the square tube 2 is performed, so that the welding quality is reduced, and therefore, the scraping mechanism 5 is needed to scrape the square tube 2 to ensure the welding quality.

[0050] The working principle of the embodiment is as follows: when the steel structure welding device for building construction is used, after the square tube 2 is clamped, the arc-shaped plate 52 is rotated around the connecting rod 39 by the driving of the torsion spring two 51, and the scraper 53 is pushed to be unable to contact the square tube 2; meanwhile, the torsion spring two 51 is elastically pushed to rotate with the square tube 2, contacts the surface of the square tube 2, removes impurities on the surface of the square tube 2, and contacts the corners of the square tube 2 through the scraper 53 to scrape the two sides of the corners, so that the corners of the square tube 2 remain clean, the square tube 2 does not slide when corner welding of the square tube 2 is performed, and when square tubes 2 with different diameters are clamped, the screw four 56 is rotated to change the distance between the torsion spring two 51 and the through-hole plate 54, so that the torsion spring two 51 is expanded or contracted, the opening is increased or reduced, and the scraper 53 is attached to the surface of the square tube 2 to remove impurities.

[0051] It is to be noted that, in the present text, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0052] Finally, it should be noted that the above-mentioned only constitutes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications, equivalent replacements, and improvements of the technical solutions described in the foregoing embodiments can be made. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A steel structure welding device for construction, comprising a base frame (1), wherein the outer surface of the base frame (1) is fixedly connected to a clamping mechanism (3), a square tube (2) is clamped inside the clamping mechanism (3), and the outer surface of the clamping mechanism (3) is fixedly connected to a welding mechanism (4), characterized in that: The welding mechanism (4) comprises: A limiting ring (41), wherein the outer surface of the limiting ring (41) is fixedly connected to a torsion spring 1 (42), and the outer surface of the torsion spring 1 (42) is fixedly connected to an arc frame 1 (43), and the torsion spring 1 (42) is used to twist the arc frame 1 (43); A second arc frame (44), wherein the interior of the second arc frame (44) is rotatably connected to a rotating frame (45), the upper surface of the rotating frame (45) is fixedly connected to a spring (452), the upper surface of the spring (452) is fixedly connected to a welding gun (451), and the welding gun (451) is used to weld the square tube (2); A rotating column (47) is fixedly connected to a magnetic plate (48) on its outer surface, and a roller (49) is rotatably connected to the outer surface of the arc frame (44), and the magnetic plate (48) is used to perform rotational adjustment on the welding gun (451).

2. A steel structure welding device for construction according to claim 1, characterized in that: The outer surface of the clamping mechanism (3) is fixedly connected to a scraping mechanism (5), a rotating groove (46) is provided inside the rotating frame (45), the rotating groove (46) is rotatably connected to the rotating column (47), the limiting ring (41) is fixedly connected to the clamping mechanism (3), and the rotating groove (46) is used to rotationally limit the rotating column (47).

3. A steel structure welding device for construction according to claim 2, characterized in that: The outer surface of the arc frame 1 (43) is fixedly connected to the arc frame 2 (44), the spring (452) is slidably connected to the rotating frame (45), the outer surface of the rotating groove (46) is in contact with the outer surface of the rotating column (47), the outer surface of the arc frame 2 (44) is rotatably connected to a roller (49), the roller (49) is in contact with the outer surface of the square tube (2), and the roller (49) is used to slide the welding gun (451).

4. A steel structure welding device for construction according to claim 2, characterized in that: The clamping mechanism (3) comprises a sliding frame (31), the sliding frame (31) is fixedly connected to the base frame (1), the sliding frame (31) is internally rotatably connected to a rotating ring (32), the internal thread of the rotating ring (32) is connected to a screw rod (33), the spacing of the sliding frame (31) is the same as the diameter of the screw rod (33), and the sliding frame (31) is used to rotate the rotating ring (32).

5. A steel structure welding device for construction according to claim 4, characterized in that: The clamping mechanism (3) further comprises a V-shaped clamping plate (34), wherein the V-shaped clamping plate (34) is rotatably connected to the screw rod (33), the outer surface of the V-shaped clamping plate (34) is clamped with a V-shaped clamping plate (35), the interior of the V-shaped clamping plate (35) is rotatably connected to the screw rod (36), the interior of the V-shaped clamping plate (35) is rotatably connected to the rotating sleeve (37), the internal thread of the rotating sleeve (37) is connected to the screw rod (38), the outer surface of the sliding frame (31) is fixedly connected to the connecting rod (39), and the V-shaped clamping plate (34) and the V-shaped clamping plate (35) are used to limit the other pipe (2).

6. A steel structure welding device for construction according to claim 5, characterized in that: The outer surfaces of the V-shaped clamping plate 1 (34) and the V-shaped clamping plate 2 (35) are in contact with the outer surface of the square tube (2), the screw rod 2 (36) is threadedly connected to the rotating ring (32), the screw rod 3 (38) is threadedly connected to the V-shaped clamping plate 1 (34), the connecting rod (39) is used to fix the sliding frame (31), and the screw rod 3 (38) is used to fix the V-shaped clamping plate 1 (34) and the V-shaped clamping plate 2 (35).

7. A steel structure welding device for construction according to claim 2, characterized in that: The scraping mechanism (5) includes a second torsion spring (51), the second torsion spring (51) is fixedly connected to the connecting rod (39), the outer surface of the second torsion spring (51) is fixedly connected to an arc plate (52), the outer surface of the arc plate (52) is fixedly connected to a scraper (53), the outer surface of the arc plate (52) is fixedly connected to a through-hole plate (54), the interior of the through-hole plate (54) is rotatably connected to a second rotating sleeve (55), the interior of the second rotating sleeve (55) is threadedly connected to a fourth screw (56), and the fourth screw (56) is used to limit the arc plate (52).

8. A steel structure welding device for construction according to claim 7, characterized in that: The outer surface of the scraper (53) contacts the outer surface of the square tube (2), the screw rod (56) is bolted to the arc plate (52), the torsion spring (51) is used to twist the arc plate (52), and the scraper (53) is located below the square tube (2). The scraper (53) is used to scrape the square tube (2).

Images