Box type steel member welding and assembling and correcting equipment

Abstract

The application discloses a box-shaped steel component welding and assembling correction equipment and relates to the technical field of box-shaped steel production.The equipment comprises a support structure, the top surface of the bottom plate of the support structure is rotatably connected with a plurality of conveying rollers, and the top surface of the conveying rollers is placed with a box-shaped steel setting plate; the top surface of the support structure is fixedly connected with four supporting rods, the top ends of the four supporting rods are fixedly connected with a top plate; the surface of the supporting rods is slidably connected with a correction structure; the support structure and the correction structure are arranged, the box-shaped steel side plates on the two sides are moved to the top surface of the box-shaped steel setting plate through the auxiliary rollers, then the two side lifting plates are lifted, the box-shaped steel side plates are driven to rotate around the buffer rollers through the auxiliary rollers on the top surface, the setting plate and the magnetic roller connected with the lifting plate can adsorb the surface of the box-shaped steel side plates, the rotation is prevented from exceeding the vertical plane during the rotation, and the box-shaped steel side plates are pulled outwards through the extension of the electric telescopic rod, so that the box-shaped steel side plates can be kept vertical during the welding.

Description

Technical Field

[0001] This invention relates to the field of box-type steel production technology, and specifically to a welding, assembly, and straightening device for box-type steel components. Background Technology

[0002] Box-section steel, also known as box column, is a steel structural component welded from steel plates, typically with a rectangular or square cross-section. Due to its large cross-sectional area and the ability to incorporate internal reinforcing structures such as diaphragms, box-section steel possesses high bending stiffness and load-bearing capacity, and is frequently used in the column structures of high-rise buildings.

[0003] In the assembly and welding process of box-shaped steel sections, four steel plates are typically welded manually to form a ring. Because manual welding requires real-time correction of the perpendicularity between the steel plates to prevent skewing and resulting in poor quality of the finished box-shaped steel section, making it unsuitable for specific applications, existing technology provides equipment for the welding process of box-shaped steel sections. For example, CN114406590A discloses a box-shaped steel structure butt welding and assembly processing equipment and its processing method. This equipment includes a platform, a tilting structure with a first support and a second support, a first support rotatably mounted on the first support with a first through hole formed inside the first support, a first clamping frame rotatably mounted on the second support, and a drive motor mounted on the platform.

[0004] This type of box-section steel assembly and processing equipment requires fixing four plates separately and perpendicularly to each other. Before fixing the steel plates, they need to be hoisted to designated installation positions, adding a step to the box-section steel assembly process. This makes it difficult to directly apply such equipment, which requires hoisting steel plates to designated positions, to assembly line box-section steel production. Furthermore, during the welding process, if there are differences in weld thickness, skewing can occur, and the perpendicularity of the box-section steel cannot be adjusted in real time during welding. Summary of the Invention

[0005] The purpose of this invention is to solve the problems in the above-mentioned background technology, such as the need for hoisting in the assembly process of box-type steel, which increases the assembly steps, the difficulty in applying it to assembly line production when hoisting it to a designated position for installation, and the inability to adjust the verticality between steel plates in real time during the assembly process. Therefore, this invention proposes a welding assembly and straightening device for box-type steel components.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A welding assembly and straightening device for box-shaped steel components includes a support structure. A plurality of conveying rollers are rotatably connected to the top surface of the base plate of the support structure, and a box-shaped steel mounting plate is placed on the top surface of the conveying rollers. Four support rods are fixedly connected to the top surface of the support structure, and a top plate is fixedly connected to the top ends of the four support rods. A straightening structure is slidably connected to the surface of the support rods, the straightening structure comprising:

[0008] The lifting plate has two support rods on the same side that are slidably connected to a limiting connection; the top surface of the lifting plate is rotatably connected to an auxiliary roller, and a box-shaped steel side plate is placed on the top surface of the auxiliary roller; the opposite sides of the two lifting plates are slidably connected to a setting plate, and the opposite sides of the two setting plates are rotatably connected to a magnetic roller.

[0009] An auxiliary structure is provided above the base plate, the auxiliary structure including:

[0010] A double-headed cylinder is fixedly connected to the top plate, and the two output ends of the double-headed cylinder extend toward the lifting plate.

[0011] The push plate is fixedly connected to the output end of the double-headed cylinder, and a support roller is rotatably connected to the side of the push plate near the lifting plate.

[0012] As a further aspect of the present invention: a plurality of conveying rollers are arranged along a horizontal plane and are parallel to each other.

[0013] As a further aspect of the present invention: buffer rollers are rotatably connected to both sides of the top surface of the base plate, the buffer rollers are located on both sides of a plurality of conveying rollers, and the setting direction of the buffer rollers is perpendicular to the setting direction of the conveying rollers.

[0014] As a further aspect of the present invention: a gap is left between the double-headed cylinder and several conveying rollers, and the height of the gap is adapted to the height of the box-shaped steel mounting plate.

[0015] As a further aspect of the present invention: a welding pen structure is provided on the opposite side of the two support rods, the mounting bracket of the welding pen structure is fixedly connected to the surface of the support rod, a hydraulic cylinder is fixedly connected to the surface of each mounting bracket, the output end of the hydraulic cylinder is set towards the center of the base plate, and the output ends of the two hydraulic cylinders are fixedly connected to the welding pen.

[0016] As a further embodiment of the present invention: a limiting groove is provided on the outer surface of the two side support frames, and the lifting plate is slidably connected in the limiting groove.

[0017] As a further aspect of the present invention: a transmission screw is provided inside the support rod, and the transmission screw passes through the lifting plate and is threadedly connected.

[0018] As a further aspect of the present invention: two rotating shafts are rotatably connected inside the top plate, and a drive bevel gear is fixedly sleeved on the surface of the rotating shaft; the top end of the transmission screw extends into the top plate and is fixedly connected to a transmission bevel gear; the drive bevel gear and the transmission bevel gear are meshed together.

[0019] As a further aspect of the present invention: when the lifting plate is at its lowest point, the highest surfaces of the buffer roller and the auxiliary roller are located in the same plane.

[0020] The beneficial effects of this invention are:

[0021] (1) The present invention provides a box-shaped steel component welding assembly and straightening device, which sets up a support structure and a straightening structure. The box-shaped steel side plates on both sides are moved to the top surface of the box-shaped steel setting plate by the auxiliary roller of the straightening structure. Then, the lifting plates on both sides are lifted, and the box-shaped steel side plates are driven to rotate around the buffer roller by the auxiliary roller on the top surface. The setting plate and magnetic roller connected to the lifting plate can adsorb the surface of the box-shaped steel side plate. During the rotation, the rotation is prevented from exceeding the vertical plane. At the same time, the box-shaped steel side plates are pulled outward by the extension and retraction of the electric telescopic rod, thereby ensuring the verticality adjustment during the welding process.

[0022] (2) The box-shaped steel component welding assembly and straightening equipment of the present invention is provided with an auxiliary structure. The double-headed cylinder of the auxiliary structure can drive the push plate to extend and retract. The support roller on the surface of the push plate can push the bottom of the box-shaped steel side plate back and forth, thereby moving the bottom of the box-shaped steel side plate to the designated installation position. The box-shaped steel side plate will suddenly fall due to gravity during rotation. By moving the position of the push plate, the box-shaped steel side plate can fall directly onto the surface of the support roller when it falls. Then, as the push plate moves, it drives the support roller to rotate, allowing the box-shaped steel side plate to slowly rotate to both sides of the box-shaped steel top plate for buffering.

[0023] (3) The box-shaped steel component welding assembly and straightening equipment of the present invention is provided with a welding mechanism. The welding pen of the welding mechanism is moved by a hydraulic cylinder. The welding pen first performs straight welding on both sides of the box-shaped steel side plate and the box-shaped steel setting plate to fix them initially. Then the hydraulic cylinder drives the welding pen to retract, and the conveying roller below drives the box-shaped steel that has been initially welded to move. The box-shaped steel and the welding pen move relative to each other to complete the welding of the remaining position, thereby completing the positioning welding of the three sides of the box-shaped steel. The steel plate is then welded on the remaining side to complete the standardized production of the box-shaped steel. Attached Figure Description

[0024] The invention will now be further described with reference to the accompanying drawings.

[0025] Figure 1 This is a structural schematic diagram of a box-type steel component welding assembly and straightening device according to the present invention;

[0026] Figure 2 This is the present invention. Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 3 This is a front structural schematic diagram of a box-shaped steel component welding assembly and straightening device according to the present invention;

[0028] Figure 4 This is a schematic diagram of the base plate and the correction structure of the present invention;

[0029] Figure 5 This is a schematic diagram of the working process of a box-type steel component welding assembly and straightening device according to the present invention.

[0030] In the diagram: 1. Support structure; 11. Base plate; 12. Conveying roller; 13. Support rod; 14. Buffer roller; 15. Top plate; 2. Transmission structure; 21. Transmission motor; 22. Rotating shaft; 23. Drive bevel gear; 24. Transmission bevel gear; 25. Transmission screw; 26. Limiting groove; 3. Correction structure; 31. Lifting plate; 32. Auxiliary roller; 33. Electric telescopic rod; 34. Setting plate; 35. Magnetic roller; 4. Auxiliary structure; 41. Fixing rod; 42. Double-headed cylinder; 43. Push plate; 44. Support roller; 5. Welding structure; 51. Mounting frame; 52. Hydraulic cylinder; 53. Welding pen; 6. Box-type steel connecting plate; 7. Box-type steel side plate. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1-5As shown, this invention is a welding assembly and straightening device for box-shaped steel components, including a support structure 1. A plurality of conveying rollers 12 are rotatably connected to the top surface of the base plate 11 of the support structure 1. The conveying rollers 12 are located in the same horizontal plane and their orientations are parallel to each other. An electrical control device is installed inside the base plate 11, capable of controlling the synchronous rotation of the conveying rollers 12. Buffer rollers 14 are rotatably mounted on both sides of the top surface of the base plate 11, located on both sides of the conveying rollers 12, and their orientations are perpendicular to the conveying rollers 12. Support rods 13 are fixedly connected to the four corners of the top surface of the base plate 11, arranged vertically, and a top plate 15 is fixedly connected to the top of the four support rods 13. A transmission structure 2 is installed inside the top plate 15 and the support rods 13. Two drive motors 21 of the transmission structure 2 are fixedly connected to one side of the top plate 15, and the output ends of the two drive motors 21 extend into the top plate 15. A rotating shaft 22 is fixedly connected to the output end of the drive motor 21. The two rotating shafts 22 pass above two support rods 13 respectively, and rotate horizontally. A drive bevel gear 23 is fixedly connected to the surface of the two rotating shafts 22 above the support rods 13, and the drive bevel gear 23 is fitted onto the surface of the support rods 13. Limiting grooves 26 are formed on the surfaces of the lower support rods 13 on both sides of the drive motor 21. A straightening structure 3 is slidably connected to the two support rods 13 through the limiting grooves 26, and the straightening structure 3 is located on both sides of the drive motor 21. A drive screw 25 is rotatably installed inside each support rod 13, and the drive screw 25 is arranged vertically. The top end of the drive screw 25 extends into the top plate 15, and a drive bevel gear 24 is fixedly connected to the top end of the drive screw 25. The drive bevel gear 23 and the drive bevel gear 24 are meshed together.

[0033] The correction structure 3 includes two lifting plates 31 located on the surface of the support rod 13. Both ends of the lifting plates 31 extend into the limiting grooves 26 of the support rod 13 for slidable limiting connection. An internal transmission screw 25 passes through the lifting plates 31, and the transmission screw 25 is threadedly connected to the lifting plates 31. An auxiliary roller 32 is rotatably mounted on the top surface of both lifting plates 31. The direction of the auxiliary roller 32 is parallel to that of a buffer roller 14 on one side, and the top surfaces of the auxiliary roller 32 and the buffer roller 14 are on the same horizontal plane. An electric telescopic rod 33 is fixedly connected to the outer surface of both lifting plates 31. The output end of the electric telescopic rod 33 passes through the lifting plates 31 and extends above the conveying roller 12. A setting plate 34 is fixedly connected to the output end of the electric telescopic rod 33. A magnetic roller 35 is rotatably mounted on the side of the setting plates 34 that is close to each other. An electrical control device is installed inside the setting plate 34, which can drive the magnetic roller 35 to rotate and impart magnetism to it.

[0034] An auxiliary structure 4 is provided on the bottom surface of the top plate 15, and the fixing rod 41 of the auxiliary structure 4 is fixedly connected to the bottom surface of the top plate 15. A double-headed cylinder 42 is fixedly connected to the bottom end of the fixing rod 41. The double-headed cylinder 42 is square in shape, and there is a gap between the bottom end of the double-headed cylinder 42 and the conveying roller 12. The gap is adapted to the height of the box-shaped steel connecting plate 6. The output ends of the double-headed cylinder 42 on both sides extend towards the lifting plates 31 on both sides. A push plate 43 is fixedly connected to the output end of the double-headed cylinder 42. A support roller 44 is rotatably provided on the side of the push plate 43 near the straightening structure 3.

[0035] Two support rods 13, away from the drive motor 21, are fixedly connected to a welded structure 5. The mounting bracket 51 of the welded structure 5 is fixedly connected to the opposite side of the two support rods 13. A hydraulic cylinder 52 is fixedly connected to the surface of the mounting bracket 51. The output ends of the two hydraulic cylinders 52 are arranged along the direction close to the fixed rod 41. A welding pen 53 is fixedly connected to the output ends of the two hydraulic cylinders 52. The welding pens 53 on both sides are arranged facing the vertical plane of the center of the bracket structure 1.

[0036] When using this box-shaped steel component welding assembly and straightening equipment, the box-shaped steel connecting plate 6 is placed on the top surface of several conveying rollers 12, and the bottom of the double-headed cylinder 42 fixes the position of the box-shaped steel connecting plate 6. Then, the two box-shaped steel side plates 7 to be welded are moved to the top surface of the buffer roller 14 and auxiliary roller 32 by an external drive device, moving the box-shaped steel side plates 7 to both sides of the top surface of the box-shaped steel connecting plate 6. Then, transmission is carried out through the transmission structure 2, and the output end of the transmission motor 21 of the transmission structure 2 drives the rotating shaft 22 to rotate. During the rotation of the rotating shaft 22, the driving bevel gear 23 on the surface rotates, thereby driving the meshing driven bevel gear to rotate. When the driven bevel gear rotates, it drives the four transmission screws 25 to rotate. The lifting plate 31, with threads threaded through the surface of the transmission screws 25, is subjected to the thread force and the limiting action of the limiting groove 26, and begins to lift outside the two support rods 13. During the ascent of the lifting plate 31, the auxiliary roller 32 on the top surface of the lifting plate 31 and the bottom surface of the box-shaped steel side plate 7 rotate relative to each other around the buffer roller 14, causing the box-shaped steel side plates 7 to rotate and tilt towards the box-shaped steel connecting plate 6. During the rotation of the box-shaped steel side plate 7, it may accelerate its fall due to its own weight. At this time, the double-headed cylinder 42 of the auxiliary structure 4 is activated. The output end of the double-headed cylinder 42 drives the push plate 43 to move, causing the support roller 44 on the surface of the push plate 43 to move closer to the box-shaped steel side plate 7. When the box-shaped steel side plate 7 accelerates its fall, it will contact the surface of the support roller 44. With the subsequent rotation of the lifting plate 31 and the rotation of the support roller 44 itself, the box-shaped steel side plate 7 slowly rotates to the top surface of the box-shaped steel connecting plate 6, avoiding collision with the top surface of the box-shaped steel due to excessive speed during rotation. During the ascent of the lifting plate 31, the box-shaped steel side plate 7 may rotate excessively, exceeding the originally set vertical direction. When the lifting plate 31 rises to a certain level, the electric telescopic rod 33 on the surface of the lifting plate 31 is activated. The output end of the electric telescopic rod 33 drives the setting plate 34 and the magnetic roller 35 to contact the outer surface of the box-shaped steel side plate 7. The electrical control equipment inside the setting plate 34 causes the magnetic roller 35 to become magnetic, thus attracting the magnetic roller 35 to the surface of the box-shaped steel side plate 7. Since the magnetic roller 35 is magnetically attached and can rotate, and the lifting plate 31 is in a continuous rising phase, the magnetic roller 35 rotates along with the setting plate 34 as it rises, and remains magnetically attracted to the surface of the box-shaped steel side plate 7, preventing the box-shaped steel side plate 7 from rotating excessively beyond the originally set vertical plane. The auxiliary roller 32 of the lifting plate 31 provides an upward rotational force to the box-shaped steel side plate 7, and the lateral magnetic roller 35 provides a lateral force to the box-shaped steel side plate 7, allowing the box-shaped steel side plate 7 to rotate smoothly. At the same time, the magnetism of the magnetic roller 35 itself prevents the box-shaped steel side plate 7 from rotating excessively.By activating the double-headed cylinder 42 of the auxiliary structure 4, the output end of the double-headed cylinder 42 drives the push plate 43 and the support roller 44 to move back and forth, pushing the bottom end of the box-shaped steel side plate 7 and moving the bottom end of the box-shaped steel side plate 7 to the designated welding position. When the lifting structure drives the box-shaped steel side plate 7 to rotate to the vertical direction on both sides of the box-shaped steel connecting plate 6, the auxiliary structure 4 adjusts the position of the box-shaped steel side plate 7 and assists in the rotation. Then, the welding structure 5 completes the welding of the box-shaped steel connecting plate 6 and the box-shaped steel side plate 7, and the hydraulic cylinders 52 on both sides are activated. The output end of the hydraulic cylinder 52 drives the welding pen 53 to move. The welding pen 53 moves to the welding point of the box-shaped steel side plate 7 and the box-shaped steel connecting plate 6, and then the welding pen 53 is activated to start welding. During the welding process, the hydraulic cylinder 52 is continuously activated so that the welding pen 53 welds a straight weld seam on the box-shaped steel side plate 7 and the box-shaped steel connecting plate 6, thereby allowing the box-shaped steel side plate 7 and the box-shaped steel connecting plate 6 to achieve initial stability. Subsequently, the output end of the hydraulic cylinder 52 drives the welding pen 53 to retract, activating several conveying rollers 12 inside the base plate 11. The conveying rollers 12 move the pre-fixed box-shaped steel connecting plate 6 and box-shaped steel side plate 7. At this time, the welding pens 53 on both sides are activated. During the movement, the pre-fixed box-shaped steel moves relative to the welding pens 53 on both sides, allowing the welding pens 53 on both sides to weld the remaining unwelded parts. This completes the welding and fixing between the box-shaped steel side plate 7 and the box-shaped steel connecting plate 6. After the welding and fixing are completed, the box-shaped steel is removed. At this point, the partial straightening welding of the box-shaped steel has been completed. The box-shaped steel sheets are then directly positioned and welded to the top surface of the box-shaped steel side plates 7, thus completing the standardized welding and forming of the box-shaped steel.

[0037] Working principle of the invention: The box-shaped steel component welding assembly and straightening device of the present invention, by setting up a support structure 1 and a straightening structure 3, the box-shaped steel side plates 7 on both sides are moved to the top surface of the box-shaped steel connecting plate 6 by the auxiliary rollers 32 of the straightening structure 3. Then, the lifting plates 31 on both sides are lifted, and the auxiliary rollers 32 on the top surface drive the box-shaped steel side plates 7 to rotate around the buffer rollers 14. The setting plate 34 and magnetic roller 35 connected to the lifting plate 31 can attract the surface of the box-shaped steel side plates 7, and prevent excessive rotation beyond the vertical plane during the rotation. At the same time, the electric telescopic rod 33 extends and retracts to drive the box-shaped steel side plates 7 outward. Pulling; by setting up an auxiliary structure 4, the double-headed cylinder 42 of the auxiliary structure 4 can drive the push plate 43 to extend and retract. The support roller 44 on the surface of the push plate 43 can push the bottom of the box-shaped steel side plate 7 back and forth, thereby moving the bottom of the box-shaped steel side plate 7 to the designated installation position; the box-shaped steel side plate 7 will suddenly fall due to gravity during rotation. By moving the position of the push plate 43, the box-shaped steel side plate 7 can fall directly onto the surface of the support roller 44 when it falls. Then, as the push plate 43 moves, it drives the support roller 44 to rotate, allowing the box-shaped steel side plate 7 to slowly rotate to both sides of the box-shaped steel top plate 15 for buffering. By setting up a welding mechanism, the welding pen 53 of the welding mechanism is moved by the hydraulic cylinder 52. The welding pen 53 will first perform straight welding on both sides of the box-shaped steel side plate 7 and the box-shaped steel connecting plate 6 to initially fix them. Then the hydraulic cylinder 52 drives the welding pen 53 to retract, and the conveying roller 12 below drives the box-shaped steel that has been initially welded to move. The box-shaped steel and the welding pen 53 move relative to each other to complete the welding of the remaining positions, thereby completing the positioning welding of the three sides of the box-shaped steel. The steel plates are then welded on the remaining sides to complete the standardized production of the box-shaped steel.

[0038] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A welding, assembly, and straightening device for box-shaped steel components, characterized in that, The system includes a support structure (1), on which a plurality of conveying rollers (12) are rotatably connected to the top surface of the base plate (11) of the support structure (1), and a box-shaped steel connecting plate (6) is placed on the top surface of the plurality of conveying rollers (12); four support rods (13) are fixedly connected to the top surface of the support structure (1), and a top plate (15) is fixedly connected to the top end of the four support rods (13); a straightening structure (3) is slidably connected to the surface of the support rods (13), the straightening structure (3) comprising: A lifting plate (31) is slidably limited to the surfaces of two support rods (13); an auxiliary roller (32) is rotatably connected to the top surface of the lifting plate (31), and a box-shaped steel side plate (7) is placed on the top surface of the auxiliary roller (32); a setting plate (34) is slidably connected to the opposite side of the two lifting plates (31), and a magnetic roller (35) is rotatably connected to the opposite side of the two setting plates (34). An auxiliary structure (4) is provided above the base plate (11), the auxiliary structure (4) including: A double-headed cylinder (42) is fixedly connected to the top plate (15), and the two output ends of the double-headed cylinder (42) extend toward the lifting plate (31); A push plate (43) is fixedly connected to the output end of a double-headed cylinder (42), and a support roller (44) is rotatably connected to the side of the push plate (43) near the lifting plate (31).

2. The box-type steel component welding assembly and straightening equipment according to claim 1, characterized in that, Several conveying rollers (12) are arranged along the horizontal plane and are parallel to each other.

3. The box-type steel component welding assembly and straightening equipment according to claim 1, characterized in that, The top surface of the base plate (11) is rotatably connected to two sides of the buffer rollers (14). The buffer rollers (14) are located on both sides of several conveying rollers (12), and the setting direction of the buffer rollers (14) is perpendicular to the setting direction of the conveying rollers (12).

4. The box-type steel component welding assembly and straightening equipment according to claim 1, characterized in that, A gap is left between the double-headed cylinder (42) and several conveying rollers (12), and the height of the gap is adapted to the height of the box-shaped steel connecting plate (6).

5. The box-type steel component welding assembly and straightening equipment according to claim 1, characterized in that, A welding pen (53) structure is provided on the opposite side of the two support rods (13). The mounting bracket (51) of the welding pen (53) structure is fixedly connected to the surface of the support rod (13). A hydraulic cylinder (52) is fixedly connected to the surface of each mounting bracket (51). The output end of the hydraulic cylinder (52) is set towards the center of the base plate (11). The output ends of the two hydraulic cylinders (52) are fixedly connected to the welding pen (53).

6. The box-type steel component welding assembly and straightening equipment according to claim 1, characterized in that, Limiting grooves (26) are provided on the outer surface of the two side support frames, and the lifting plate (31) is slidably connected in the limiting grooves (26).

7. The box-type steel component welding assembly and straightening equipment according to claim 6, characterized in that, The support rod (13) is equipped with a transmission screw (25), which passes through the lifting plate (31) and is threaded.

8. The box-type steel component welding assembly and straightening equipment according to claim 7, characterized in that, The top plate (15) is rotatably connected to two rotating shafts (22), and the surface of the rotating shafts (22) is fixedly fitted with a drive bevel gear (23); the top end of the transmission screw extends into the top plate (15) and is fixedly connected to a transmission bevel gear (24); the drive bevel gear (23) and the transmission bevel gear (24) are meshed together.

9. The box-type steel component welding assembly and straightening equipment according to claim 1, characterized in that, When the lifting plate (31) is at its lowest point, the highest surfaces of the buffer roller (14) and the auxiliary roller (32) are in the same plane.

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