Equipment for steel structure fabrication and its construction method

Abstract

This invention discloses a device for steel structure processing, comprising a base plate; a shell is mounted on the top of the base plate, and a top plate is provided on one side edge via two support plates; several pairs of movable slots are symmetrically formed on the upper surface of the shell, and a fixing component is provided through the movable slot from the inner cavity outward at the movable slot, the fixing component including a front and rear clamping mechanism and a top pressing mechanism; a long slot is formed at the center of the top plate, and two slide rails are provided on both sides of the long slot, with a placement plate on the two slide rails; a first electric telescopic rod is passed through the middle of the placement plate at the long slot, and a protective shell is installed at the telescopic end of the first electric telescopic rod; an installation component is provided in the inner cavity of the protective shell, and a welding head is provided at its bottom; limiting plates connected to the installation component are provided on both sides of the top of the welding head; wherein, after the steel structure is placed on the shell, the steel structure is clamped on the front and rear sides and pressed on the top by the fixing component, and then welded by the welding head. Applying this invention can effectively ensure the welding quality of steel structures.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel structure processing, and particularly relates to a device for steel structure processing and a construction method thereof. BACKGROUND

[0002] Steel structure is a building structure form taking steel as the main load-bearing material, which is widely used in various buildings and projects, including industrial buildings, commercial buildings, bridges and towers, etc. The main advantages of steel structure include high strength, light weight, good durability and high construction flexibility. Steel structure needs to use processing equipment in the processing process, and the processing equipment includes many kinds, including welding equipment.

[0003] The existing steel structure welding equipment is inconvenient to position and fix the steel structure during welding, and the lack of corresponding limiting structure leads to the easy deviation of the steel structure during welding, which affects the welding quality. The structure deviation may lead to inaccurate weld position, affecting the welding strength and the integrity of the joint, and the rework and adjustment caused by the deviation increase the construction time and cost. For example, the steel structure welding equipment disclosed in the Chinese patent CN220407595U has the above-mentioned shortcomings.

[0004] Therefore, we need a device for steel structure processing and a construction method thereof to solve the above-mentioned problems. SUMMARY

[0005] The application provides a device for steel structure processing and a construction method thereof, which are used to solve the problems that the existing steel structure welding equipment is inconvenient to position and fix the steel structure during welding, and the lack of corresponding limiting structure leads to the easy deviation of the steel structure during welding, which affects the welding quality, and the structure deviation may lead to inaccurate weld position, affecting the welding strength and the integrity of the joint, and the rework and adjustment caused by the deviation increase the construction time and cost.

[0006] In order to achieve the above-mentioned application purposes, the application provides the following technical scheme:

[0007] The application discloses a device for steel structure machining, which comprises a bottom plate and a plurality of supporting legs arranged at the bottom of the bottom plate; a shell is arranged on the top of the bottom plate, and a top plate is arranged on one side edge of the shell through two supporting plates; a plurality of pairs of moving grooves are symmetrically arranged on the upper surface of the shell, and a fixing assembly is arranged on the outer surface of the shell from the inner cavity to the outside at the moving grooves; the fixing assembly comprises front and rear clamping mechanisms and a top pressing mechanism; a long groove is arranged at the center of the top plate, two slide rails are arranged on the two sides of the long groove, and a placing plate is arranged on the two slide rails; a first electric telescopic rod is arranged on the placing plate and penetrates the long groove, and a protection shell is arranged on the telescopic end of the first electric telescopic rod; an installation assembly is arranged in the inner cavity of the protection shell, and a welding head is arranged at the bottom of the installation assembly; limiting plates which are detachably connected with the installation assembly are arranged on the top of the two sides of the welding head; wherein, after the steel structure is placed on the shell, the front and rear clamping mechanisms and the top pressing mechanism of the fixing assembly are used for clamping the steel structure from the front and rear sides and pressing the top of the steel structure, and then welding processing is performed through the welding head.

[0008] Further, the fixing assembly comprises a second electric telescopic rod fixedly arranged on the left side of the inner cavity of the shell, a first toothed plate provided with straight teeth on the two sides is fixedly arranged on the telescopic end of the right side of the second electric telescopic rod, first rotating gears are respectively arranged on the front side and the rear side of the first toothed plate, and the two first rotating gears are movably connected with the shell through supporting rods; a connecting rod is fixedly arranged on the side opposite to the top of each of the two first rotating gears, a fixing frame is movably connected with the surface of the connecting rod, a waist-shaped long groove is arranged on the fixing frame along the length direction, and the connecting rod is arranged on the inner side of the waist-shaped long groove; a plurality of connecting plates corresponding to the moving grooves are fixedly arranged on the opposite sides of the two fixing frames, the connecting plates respectively extend from the corresponding moving grooves, and a fixed plate in the shape of "L" is fixedly arranged on the opposite side of each of the connecting plates; a threaded sleeve is fixedly arranged on the top of the fixed plate, a threaded rod is screw-connected in the inner cavity of the threaded sleeve, a rotating disc is fixedly arranged on the top of the threaded rod, and a clamping plate is movably connected with the bottom of the threaded rod.

[0009] Further, a stable plate is arranged on the surface of the second electric telescopic rod, and the side close to the shell of the stable plate is fixedly connected with the shell.

[0010] Further, a T-shaped limiting block is fixedly arranged on the bottom of the first toothed plate, a limiting shell is arranged on the surface of the limiting block, the inner cavity of the limiting shell is slidably connected with the limiting block, and the side close to the shell of the limiting shell is fixedly connected with the shell.

[0011] Further, a sliding block is fixedly arranged on each of the two sides of the fixing frame, a sliding rod is slidably connected in the inner cavity of the sliding block, and the side close to the shell of the sliding rod is fixedly connected with the shell.

[0012] Further, the two sides of the top of the clamping plate are fixedly provided with movable rods, the surface of the movable rod is movably connected with a movable sleeve, and the surface of the movable sleeve is fixedly connected with the inner cavity of the fixed plate.

[0013] Further, the installation assembly comprises a rotating rod, the rotating rod penetrates the front side of the inner cavity of the protection shell, the front side of the rotating rod is fixedly provided with a fixed disc, the rear side of the rotating rod is fixedly provided with a first bevel gear, the bottom of the first bevel gear is engaged with a second bevel gear, the inner cavity of the second bevel gear is fixedly provided with a transmission rod, the side close to the protection shell of the transmission rod is movably connected with the protection shell, the surface of the transmission rod is fixedly provided with a second rotating gear, the front side and the rear side of the second rotating gear are engaged with second toothed plates, the opposite sides of the two second toothed plates are fixedly provided with baffle plates, the opposite sides of the two baffle plates are fixedly provided with clamping blocks, and the inner side of the limiting plate is provided with fixed grooves matched with the clamping blocks.

[0014] Further, the opposite sides of the two second toothed plates are fixedly provided with positioning blocks, the inner cavities of the positioning blocks are slidably connected with positioning rods, and the two sides of the positioning rod are fixedly installed in the inner cavity of the protection shell.

[0015] Further, the two sides of the shell are fixedly provided with two positioning plates, and the side close to the bottom plate of the positioning plate is detachably connected with the bottom plate.

[0016] The construction method of the above-mentioned device for steel structure machining is as follows:

[0017] In use, the steel structure is placed on the top of the shell, the second electric telescopic rod is started, the first toothed plate is driven to move through the telescopic end of the second electric telescopic rod, the two first rotating gears are engaged with the front side and the rear side of the first toothed plate and rotate following the movement of the first toothed plate, then the first rotating gear drives the fixed frame to move through the connecting rod in rotation, the connecting plate moves following the movement of the fixed frame, the fixed plate moves following the movement of the connecting plate, the two fixed plates move close to each other, so as to clamp and fix the front side and the rear side of the steel structure; the rotating disc is rotated, the rotating disc drives the threaded rod to rotate and move towards the bottom when rotating, the clamping plate moves following the movement of the threaded rod, and the top of the steel structure is fixed through the clamping plate;

[0018] When the welding head is mounted and dismounted, the two limiting plates on the top of the welding head are clamped to the two sides of the protective shell, the fixed disc is rotated to drive the rotating rod to rotate, the rotating rod drives the first bevel gear to rotate when rotating, the first bevel gear drives the second bevel gear to rotate when rotating, the second bevel gear drives the transmission rod to rotate when rotating, the transmission rod drives the second rotating gear to rotate when rotating, the second rotating gear drives the two second tooth plates to move in opposite directions when rotating, the second tooth plate drives the baffle to move when moving, the baffle drives the clamping block to move when moving, the clamping block is moved into the fixed groove on the limiting plate, so that the limiting plate is quickly mounted; when the limiting plate needs to be dismounted, the fixed disc is reversely rotated, the clamping block is separated from the fixed groove in the limiting plate, so that the limiting plate is dismounted, that is, the dismounting of the welding head is completed.

[0019] Compared with the prior art, the device for steel structure processing and the construction method thereof can stably fix the front side, the back side and the top of the steel structure through the fixing assembly, prevent the steel structure from deviating during welding, ensure the accuracy of the welding position, enhance the welding strength and the reliability of the joint, prevent the structure from deforming due to the thermal stress generated during welding, reduce the structure deviation, reduce the safety hidden danger caused by instability, reduce the need for rework and adjustment, save time and cost. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the device for steel structure processing of the present application;

[0021] Figure 2 It is a structural bottom view schematic view of the device for steel structure processing of the present application;

[0022] Figure 3 It is a welding head front view schematic view of the device for steel structure processing of the present application;

[0023] Figure 4 It is a side view schematic view of the fixing assembly of the device for steel structure processing of the present application;

[0024] Figure 5 It is a bottom view schematic view of the fixing assembly of the device for steel structure processing of the present application;

[0025] Figure 6 It is a front view schematic view of the mounting assembly of the device for steel structure processing of the present application.

[0026] As shown in the figure, 1 is a bottom plate, 2 is an outer shell, 21 is a moving groove, 3 is a fixing assembly, 301 is a second electric telescopic rod, 302 is a first toothed plate, 303 is a first rotating gear, 304 is a supporting rod, 305 is a connecting rod, 306 is a fixing frame, 307 is a connecting plate, 308 is a fixing plate, 309 is a threaded sleeve, 310 is a threaded rod, 311 is a rotating disc, 312 is a clamping plate, 313 is a stabilizing plate, 314 is a limiting block, 315 is a limiting shell, 316 is a sliding block, 317 is a sliding rod, 318 is a movable rod, 319 is a movable sleeve, 4 is a supporting plate, 5 is a top plate, 51 is a long groove, 6 is a sliding rail, 7 is a placing plate, 8 is a first electric telescopic rod, 9 is a protective shell, 10 is a mounting assembly, 1001 is a rotating rod, 1002 is a fixing disc, 1003 is a first bevel gear, 1004 is a second bevel gear, 1005 is a transmission rod, 1006 is a second rotating gear, 1007 is a second toothed plate, 1008 is a baffle, 1009 is a clamping block, 1010 is a positioning block, 1011 is a positioning rod, 11 is a welding head, 12 is a limiting plate, 13 is a supporting leg, and 14 is a positioning plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application. Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meanings understood by those skilled in the art to which the present disclosure belongs. The "upper", "lower", "left", "right", "front", "back" and the like used in the patent application specification and claims of the present disclosure are only used to represent the relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship also changes accordingly. The terms such as "connection" or "connection" are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. The details of the present application are well known to those skilled in the art.

[0028] Embodiment 1

[0029] Please refer to Figures 1-6The application discloses a device for steel structure machining, which comprises a bottom plate 1, a plurality of supporting legs 13 arranged at the bottom of the bottom plate 1, an outer shell 2 arranged at the top of the bottom plate 1, a top plate 5 arranged at one side edge of the outer shell 2 through two supporting plates 4, a plurality of pairs of moving grooves 21 symmetrically arranged on the upper surface of the outer shell 2, a fixing assembly 3 arranged through the inner cavity of the outer shell 2 and outwardly at the moving grooves 21, a first electric telescopic rod 8 arranged through the long groove 51 at the center of the top plate 5, a protection shell 9 arranged at the telescopic end of the first electric telescopic rod 8, an installation assembly 10 arranged in the inner cavity of the protection shell 9, a welding head 11 arranged at the bottom of the installation assembly 10, and a limiting plate 12 arranged at the top of the welding head 11 and detachably connected with the installation assembly 10.

[0030] The front and rear clamping mechanisms and the top pressing mechanism of the fixing assembly 3 can stably fix the steel structure, prevent the steel structure from deviating in the welding process, ensure the accuracy of the welding position, enhance the welding strength and the reliability of the joint, prevent the structure from being deformed due to the thermal stress generated in the welding process, reduce the structure deviation, reduce the safety hidden danger caused by instability, reduce the need for rework and adjustment, save time and cost.

[0031] In the embodiment, the fixing assembly 3 comprises a second electric telescopic rod 301 fixedly arranged in the inner cavity of the outer shell 2, a first toothed plate 302 fixedly arranged at the telescopic end of the right side of the second electric telescopic rod 301 and provided with straight teeth on both sides, a first rotating gear 303 meshed with the front side and the rear side of the first toothed plate 302, respectively, two first rotating gears 303 movably connected with the outer shell 2 through a supporting rod 304, a connecting rod 305 fixedly arranged on the opposite side of the top of the two first rotating gears 303, a fixed frame 306 movably connected with the surface of the connecting rod 305, a waist-shaped long groove arranged along the length direction of the fixed frame 306 and the connecting rod 305 arranged inside the waist-shaped long groove, a plurality of connecting plates 307 fixedly arranged on the opposite side of the two fixed frames 306 and corresponding to the moving grooves 21, respectively, the connecting plates 307 respectively extending out of the corresponding moving grooves 21, a fixed plate 308 fixedly arranged on the opposite side of each connecting plate 307 and in an L shape, the above structures forming the front and rear clamping mechanisms, a threaded sleeve 309 fixedly arranged on the top of the fixed plate 308, a threaded rod 310 threadedly connected with the inner cavity of the threaded sleeve 309, a rotating disc 311 fixedly arranged on the top of the threaded rod 310, and a clamping plate 312 movably connected with the bottom of the threaded rod 310, the above structures forming the top pressing mechanism.

[0032] In the embodiment, the second electric telescopic rod 301 is sleeved with a stable plate 313, and the side close to the shell 2 is fixedly connected with the shell 2.

[0033] In the embodiment, the bottom of the first toothed plate 302 is fixedly installed with a T-shaped limiting block 314, the surface of the limiting block 314 is provided with a limiting shell 315, the inner cavity of the limiting shell 315 is matched with the limiting block 314 and is in sliding connection, and the side close to the shell 2 is fixedly connected with the shell 2.

[0034] In the embodiment, the two sides of the fixing frame 306 are fixedly installed with sliding blocks 316, the inner cavities of the sliding blocks 316 are in sliding connection with sliding rods 317, and the side close to the shell 2 is fixedly connected with the shell 2.

[0035] In the embodiment, the two sides of the top of the clamping plate 312 are fixedly installed with movable rods 318, the surface of the movable rod 318 is movably connected with a movable sleeve 319, and the surface of the movable sleeve 319 is fixedly connected with the inner cavity of the fixed plate 308.

[0036] In the embodiment, the mounting assembly 10 comprises a rotating rod 1001 penetrating through the front side of the inner cavity of the protection shell 9, a fixed disc 1002 fixedly installed on the front side of the rotating rod 1001, a first bevel gear 1003 fixedly installed on the rear side of the rotating rod 1001, a second bevel gear 1004 meshing with the bottom of the first bevel gear 1003, a transmission rod 1005 fixedly installed in the inner cavity of the second bevel gear 1004, the side close to the protection shell 9 being movably connected with the protection shell 9, a second rotating gear 1006 fixedly installed on the surface of the transmission rod 1005, a second toothed plate 1007 meshing with the front side and the rear side of the second rotating gear 1006, a baffle 1008 fixedly installed on the side opposite to the two second toothed plates 1007, a clamping block 1009 fixedly installed on the side opposite to the two baffles 1008, and a fixed groove matched with the clamping block 1009 being formed in the inner side of the limiting plate 12.

[0037] In the embodiment, the side opposite to the two second toothed plates 1007 is fixedly installed with a positioning block 1010, the inner cavity of the positioning block 1010 is in sliding connection with a positioning rod 1011, and the two sides of the positioning rod 1011 are fixedly installed in the inner cavity of the protection shell 9.

[0038] In the embodiment, the two sides of the shell 2 are fixedly installed with two positioning plates 14, and the side close to the bottom plate 1 is detachably connected with the bottom plate 1.

[0039] Embodiment 2

[0040] The construction method of the device for steel structure machining in Embodiment 1 is characterized in that the specific operation is as follows:

[0041] In use, the steel structure is placed on the top of the shell 2, and the second electric telescopic rod 301 is started to move the first toothed plate 302 in use, the two first rotating gears 303 are engaged on the front side and the rear side of the first toothed plate 302 and rotate with the first toothed plate 302, then the first rotating gear 303 drives the fixed frame 306 to move through the connecting rod 305, the connecting plate 307 moves with the fixed frame 306, the fixed plate 308 moves with the connecting plate 307, and the two fixed plates 308 are close to each other to fix the front side and the rear side of the steel structure, the threaded rod 310 is rotated by rotating the rotating disc 311, the threaded rod 310 is screwed in the inner cavity of the threaded sleeve 309, and the threaded rod 310 moves to the bottom during rotation, the clamp plate 312 moves with the threaded rod 310, the top of the steel structure is fixed by the clamp plate 312, the steel structure is more stable during welding, and the equipment is prevented from deviating during welding of the steel structure, so that welding failure is avoided, the first electric telescopic rod 8 is started to move the protective shell 9, the mounting assembly 10, the welding head 11 and the limiting plate 12, the welding head 11 contacts the surface of the steel structure, so that the steel structure is welded, and the welding head 11 is moved left and right through the slide rail 6, which is more convenient in use.

[0042] When the welding head 11 needs to be installed and disassembled, the two limiting plates 12 are clamped to the two sides of the protective shell 9, the fixed disc 1002 is rotated to drive the rotating rod 1001 to rotate, the first bevel gear 1003 is rotated to drive the second bevel gear 1004 to rotate, the second bevel gear 1004 is rotated to drive the transmission rod 1005 to rotate, the second rotating gear 1006 is rotated to drive the two second toothed plates 1007 to move in opposite directions, the baffle 1008 is moved to drive the clamping block 1009 to move, the clamping block 1009 is moved into the fixed groove on the limiting plate 12, so that the limiting plate 12 is quickly installed; when the limiting plate 12 needs to be disassembled, the fixed disc 1002 is rotated in reverse to separate the clamping block 1009 from the limiting plate 12, so that the limiting plate 12 is disassembled, the welding head 11 is installed on the limiting plate 12 and is installed and disassembled with the limiting plate 12, and it is more convenient to disassemble, replace or maintain the welding head 11.

Claims

1. An apparatus for steel structure processing, characterized in that, The utility model provides a steel structure fixing device, including bottom plate (1) and be located bottom of bottom plate (1) multiple support leg (13), bottom plate (1) top is equipped with shell (2), and one side edge is along through two support plate (4) is equipped with top plate (5), shell (2) upper surface front and back symmetry is equipped with several pairs of mobile slot (21), and is provided with fixed assembly (3) from the inner chamber to the outside at mobile slot (21) place, fixed assembly (3) includes front and back side clamping mechanism and top pressing mechanism, top plate (5) center place is equipped with long slot (51), and long slot (51) both sides correspond to be equipped with two slide rail (6), and two slide rail (6) are commonly provided with the placement plate (7), and the first electric telescopic rod (8) is installed to the middle part of placement plate (7) at long slot (51) place, and the telescopic end of first electric telescopic rod (8) is installed with protective shell (9), and the inner chamber of protective shell (9) is provided with mounting assembly (10), and its bottom is provided with welding head (11), and the both sides of welding head (11) top are provided with the limiting plate (12) of detachable connection with mounting assembly (10), wherein: after the steel structure is placed on shell (2), the front and back side clamping and top pressing of steel structure are carried out through the front and back side clamping mechanism and top pressing mechanism of fixed assembly (3) respectively, and then welding processing is carried out through welding head (11), The fixed assembly (3) includes a second electric telescopic rod (301) fixedly installed in the inner chamber of the shell (2), the telescopic end of the second electric telescopic rod (301) on the right side is fixedly installed with a first toothed plate (302) provided with straight teeth on both sides, the front side and the rear side of the first toothed plate (302) are respectively engaged with a first rotating gear (303), and the two first rotating gears (303) are respectively movably connected with the shell (2) through a support rod (304); the opposite side of the top of the two first rotating gears (303) is fixedly installed with a connecting rod (305), the surface of the connecting rod (305) is movably connected with a fixing frame (306), the fixing frame (306) is provided with a waist-shaped long slot along the length direction, and the connecting rod (305) is arranged on the inner side of the waist-shaped long slot; the opposite side of the two fixing frames (306) is fixedly installed with a plurality of connecting plates (307) corresponding to the mobile slots (21) one by one, the connecting plates (307) are respectively arranged to extend from the corresponding mobile slots (21), and the opposite side of each connecting plate (307) is fixedly installed with a fixed plate (308) in the shape of "L"; the top of the fixed plate (308) is fixedly installed with a threaded sleeve (309), the inner chamber of the threaded sleeve (309) is threadedly connected with a threaded rod (310), the top of the threaded rod (310) is fixedly installed with a rotating disc (311), and the bottom of the threaded rod (310) is movably connected with a clamping plate (312).

2. The apparatus for processing of steel structures according to claim 1, characterized in that, The surface of the second electric telescopic rod (301) is sleeved with a stable plate (313), and the side close to the shell (2) of the stable plate (313) is fixedly connected with the shell (2).

3. The apparatus for processing of steel structures according to claim 1, characterized in that, The bottom of the first toothed plate (302) is fixedly provided with a T-shaped limiting block (314), the surface of the limiting block (314) is provided with a limiting shell (315), the inner cavity of the limiting shell (315) is matched with the limiting block (314) and is in sliding connection, and the side close to the shell (2) is fixedly connected with the shell (2).

4. The apparatus for processing a steel structure according to claim 1, wherein Both sides of the fixing frame (306) are fixedly provided with sliding blocks (316), the inner cavity of the sliding block (316) is in sliding connection with a sliding rod (317), and the side close to the shell (2) of the sliding rod (317) is fixedly connected with the shell (2).

5. The apparatus for processing of steel structures according to claim 1, characterized in that, Both sides of the top of the clamping plate (312) are fixedly provided with movable rods (318), the surface of the movable rod (318) is movably connected with a movable sleeve (319), and the surface of the movable sleeve (319) is fixedly connected with the inner cavity of the fixed plate (308).

6. An apparatus for processing steel structures according to any one of claims 1-5, characterized in that, The mounting assembly (10) comprises a rotating rod (1001), the rotating rod (1001) penetrates through the front side of the inner cavity of the protection shell (9) in a movable manner, the front side of the rotating rod (1001) is fixedly provided with a fixed disc (1002), the rear side of the rotating rod (1001) is fixedly provided with a first bevel gear (1003), the bottom of the first bevel gear (1003) is engaged with a second bevel gear (1004), the inner cavity of the second bevel gear (1004) is fixedly provided with a transmission rod (1005), the side close to the protection shell (9) of the transmission rod (1005) is movably connected with the protection shell (9), the surface of the transmission rod (1005) is fixedly provided with a second rotating gear (1006), the front side and the rear side of the second rotating gear (1006) are engaged with a second toothed plate (1007), the opposite side of each of the two second toothed plates (1007) is fixedly provided with a baffle (1008), the opposite side of each of the two baffles (1008) is fixedly provided with a clamping block (1009), and the inner side of the limiting plate (12) is provided with a fixed groove matched with the clamping block (1009).

7. An apparatus for processing steel structures according to claim 6, characterized in that, The opposite side of each of the two second toothed plates (1007) is fixedly provided with a positioning block (1010), the inner cavity of the positioning block (1010) is in sliding connection with a positioning rod (1011), and both sides of the positioning rod (1011) are fixedly provided in the inner cavity of the protection shell (9).

8. The apparatus for processing of steel structures according to claim 1, characterized in that, Both sides of the shell (2) are fixedly provided with two positioning plates (14), and the side close to the bottom plate (1) of the positioning plate (14) is detachably connected with the bottom plate (1).

9. The construction method of an apparatus for processing a steel structure according to claim 6 or 7, wherein The specific operation is as follows: In use, the steel structure is placed on the top of the shell (2), the second electric telescopic rod (301) is started, the first toothed plate (302) is driven to move by the telescopic end of the second electric telescopic rod (301), the two first rotating gears (303) are engaged on the front side and the back side of the first toothed plate (302) and rotate following the movement of the first toothed plate (302), then the first rotating gears (303) drive the fixed frame (306) to move through the connecting rod (305) during rotation, the connecting plate (307) moves following the movement of the fixed frame (306), the fixed plate (308) moves following the movement of the connecting plate (307), the two fixed plates (308) are close to each other, so that the front side and the back side of the steel structure are clamped and fixed; the clamping plate (312) moves following the movement of the threaded rod (310) by rotating the rotating disc (311), the threaded rod (310) rotates and moves to the bottom, the clamping plate (312) moves following the movement of the threaded rod (310), the top of the steel structure is fixed by the clamping plate (312); When the welding head (11) is installed and disassembled, the two limiting plates (12) on the top of the welding head (11) are clamped to the two sides of the protective shell (9), the fixed disc (1002) is rotated to drive the rotating rod (1001) to rotate, the rotating rod (1001) rotates to drive the first bevel gear (1003) to rotate, the first bevel gear (1003) rotates to drive the second bevel gear (1004) to rotate, the second bevel gear (1004) rotates to drive the transmission rod (1005) to rotate, the transmission rod (1005) rotates to drive the second rotating gear (1006) to rotate, the second rotating gear (1006) rotates to drive the two second toothed plates (1007) to move in opposite directions, the second toothed plates (1007) move to drive the baffle (1008) to move, the baffle (1008) moves to drive the clamping block (1009) to move, the clamping block (1009) is moved into the fixed groove on the limiting plate (12), so that the limiting plate (12) is quickly installed; when the limiting plate (12) needs to be disassembled, the fixed disc (1002) is rotated in reverse, the clamping block (1009) is separated from the fixed groove in the limiting plate (12), so that the limiting plate (12) is disassembled, that is, the welding head (11) is disassembled.

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