A welding device for steel structure buildings

Abstract

The application discloses a welding device for steel structure buildings and belongs to the technical field of steel welding, which comprises a welding guide rail for controlling the welding of a main steel beam and a secondary steel beam, bolt modules for fastening connection are arranged between the main steel beam and the secondary steel beam, the side wall of the welding guide rail is assembled with the main steel beam through two L-shaped magnetic pressing plates, the side wall of the L-shaped magnetic pressing plate is connected with a C-shaped sliding frame for adjusting the installation position through a universal assembly, and the inner side wall of the C-shaped sliding frame is connected with adjusting balls for positioning the welding guide rail. Through the arrangement of the path offset assembly, the designed wave-shaped guide rail and the arc surface pushing plate system can be utilized to drive the welding gun to perform Z-shaped welding. The path can make the welding heat input more uniform, significantly reduce the welding deformation and residual stress, and make the weld metal more dense, so that the mechanical properties and the connecting strength of the weld are comprehensively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel welding, and particularly relates to a welding device for steel structure buildings. BACKGROUND

[0002] When connected, steel structure buildings usually adopt a connection mode combining high-strength bolts and electric welding.

[0003] In steel structure buildings, main steel beams and secondary steel beams are often connected through connecting plates by using a 'bolt first and then weld' process, that is, high-strength bolts are used for preliminary fastening, and then welding is performed. Although this process can use the clamping force of the bolts to reserve the freedom for welding shrinkage and reduce residual stress, it still faces significant challenges in actual high-altitude operations.

[0004] Firstly, construction personnel need to weld and tighten bolts at hidden parts such as the bottom and side of the component in a small space, which often requires unconventional operating postures. This not only has great construction difficulty and low efficiency, but also has high safety risks.

[0005] Secondly, manual operation cannot accurately control the tightening sequence and torque of the bolts, and the uniformity of the welding path, which easily leads to uneven initial stress and welding deformation at the structure connection, directly affecting the final connection quality and structure safety.

[0006] Therefore, there is an urgent need for a welding device that can adapt to complex high-altitude working conditions and achieve precise and automated construction. SUMMARY

[0007] The present application relates to the technical field of steel welding, and particularly relates to a welding device for steel structure buildings.

[0008] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0009] A welding device for steel structure buildings, comprising a welding guide rail for controlling the welding of a main steel beam and a secondary steel beam, a bolt module for fastening connection being arranged between the main steel beam and the secondary steel beam, the side wall of the welding guide rail being assembled with the main steel beam through two L-shaped magnetic pressing plates, the side wall of the L-shaped magnetic pressing plate being connected with a C-shaped sliding frame for adjusting the installation position through a universal assembly, and the inner side wall of the C-shaped sliding frame being connected with an adjusting ball for positioning the welding guide rail.

[0010] The welding guide rail side wall is rotationally connected with the retaining frame below through the steering seat.

[0011] Preferably, the bolt module comprises a connecting steel plate on both sides of the secondary steel beam, and a plurality of high-strength bolts are arranged on the connecting steel plate.

[0012] Preferably, the universal assembly comprises a universal hinge seat fixed on the L-shaped magnetic pressing plate, the universal hinge seat is rotationally connected with a compensation telescopic rod through a universal ball, and the compensation telescopic rod is rotationally connected with the C-shaped sliding frame through a universal joint.

[0013] Preferably, the upper and lower inner end faces of the C-shaped sliding frame are in rolling connection with adjusting balls, so that the C-shaped sliding frame can slide on the secondary steel beam, and two groups of hydraulic limiting columns are fixedly connected to the two sides of the C-shaped sliding frame.

[0014] Preferably, the welding guide rail side wall is rotationally connected with the retaining frame below through the steering seat.

[0015] Preferably, the screwing assembly comprises a screwing motor fixed on the output end of the hydraulic lifting rod, and a bolt screwing sleeve is fixed on the output end of the screwing motor through a propelling shaft.

[0016] Preferably, the compensation assembly comprises two position adjusting sliding blocks fixed on the bottom of the welding platform, two receiving grooves are arranged on the moving seat, and the two ends of the receiving grooves are fixedly connected with the two ends of the position adjusting sliding blocks through two reciprocating telescopic rods.

[0017] Preferably, the welding mechanism comprises a welding control seat fixed on the welding platform, and the welding control seat is connected with a welding mechanical arm.

[0018] Preferably, the path offset assembly comprises an arc surface pushing plate fixed on the side wall of the welding platform, two retaining frames above are fixedly connected with a wave-shaped guide rail, and a plurality of arc grooves matched with the arc surface pushing plate are arranged in the wave-shaped guide rail.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. The device can be quickly positioned on the I-beam through the setting of the C-shaped sliding frame, magnetic attraction, universal hinge and sliding adjustment, and can be firmly locked through the hydraulic limiting column, which saves the complicated manual measurement and fixing steps. The same installation method can be flexibly applied to the bottom of the main steel beam, and the welding operation in high altitude and multiple angles (including difficult positions such as overhead welding) can be easily realized, which greatly expands the construction range.

[0021] 2. The device can easily reach and tighten the bolts in the hidden parts of the I-beam, such as the traditional difficult construction, through the hydraulic lifting, advancing and deflecting mechanism, and the bolt tightening sleeve can realize the programmed and standardized operation of the bolt initial tightening and final tightening, effectively avoid the problem of over-tightening or over-tightening caused by manual operation, and lay a good foundation for controlling the welding residual stress and ensuring the initial quality of the node connection.

[0022] 3. The device can drive the welding gun to perform Z-shaped welding through the designed wave-shaped guide rail and arc surface push plate system, which can make the welding heat input more uniform, significantly reduce the welding deformation and residual stress, and make the weld metal more dense, thereby improving the mechanical properties and connection strength of the weld. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A perspective view of a welding device for a steel structure building is provided.

[0024] Figure 2 A zoomed-in view of the middle A. Figure 1

[0025] Figure 3 A perspective view of a welding device for a steel structure building is provided.

[0026] Figure 4 A perspective view of a welding device for a steel structure building is provided.

[0027] Figure 5 A perspective view of a welding device for a steel structure building is provided.

[0028] Figure 6 A perspective view of a welding device for a steel structure building is provided.

[0029] Figure 7 A perspective view of a welding device for a steel structure building is provided.

[0030] ​Figure 8 A structural schematic diagram of a path offset assembly in a welding device for a steel structure building is provided in the present application.

[0031] Figure 9 A structural schematic diagram of a compensation assembly in a welding device for a steel structure building is provided in the present application.

[0032] In the figure: 1, main steel beam; 2, secondary steel beam; 3, welding guide rail; 4, L-shaped magnetic pressing plate; 5, universal hinge seat; 6, universal ball; 7, compensation telescopic rod; 8, steering knuckle; 9, C-shaped sliding frame; 10, adjusting ball; 11, hydraulic limiting column; 12, steering seat; 13, retaining frame; 14, hydraulic lifting rod; 15, screwing motor; 16, pushing shaft; 17, bolt screwing sleeve; 18, wave-shaped guide rail; 19, moving seat; 20, position adjusting slider; 21, reciprocating telescopic rod; 22, welding platform; 23, welding control seat; 24, welding mechanical arm; 25, cambered surface pushing plate. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described in combination with 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 labor fall within the protection scope of the present application.

[0034] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be broadly understood, for example, "connected" can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside 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.

[0036] Embodiment, refer to Figures 1 to 9The utility model provides a welding device for steel structure building, including the welding guide rail 3 for controlling the welding of main steel beam 1 and secondary steel beam 2, and the bolt module for fastening connection is arranged between main steel beam 1 and secondary steel beam 2, the side wall of welding guide rail 3 is assembled with main steel beam 1 through two L type magnetic pressing plates 4, and the side wall of L type magnetic pressing plate 4 is connected with C type sliding frame 9 for adjusting installation position through universal assembly, and the inner side wall of C type sliding frame 9 is connected with adjusting ball 10 for positioning the position of welding guide rail 3,

[0037] Further, the bolt module includes connecting steel plates on both sides of the secondary steel beam 2, the connecting steel plates are provided with a plurality of high-strength bolts, the universal assembly includes a universal hinge seat 5 fixed to the L-shaped magnetic pressing plate 4, the universal hinge seat 5 is rotatably connected with a compensation telescopic rod 7 through a universal ball 6, the compensation telescopic rod 7 is rotatably connected with the C-shaped sliding frame 9 through a universal joint 8, the upper and lower inner end faces of the C-shaped sliding frame 9 are rotatably connected with the adjusting balls 10, which facilitates the sliding of the C-shaped sliding frame 9 on the secondary steel beam 2, two groups of hydraulic limiting columns 11 are fixedly connected to both sides of the C-shaped sliding frame 9, and the side wall of the welding guide rail 3 is rotatably connected with a retaining frame 13 located below through a steering seat 12.

[0038] It should be noted that the two C-shaped sliding frames 9 are sleeved on both sides of the secondary steel beam 2 (both the main steel beam 1 and the secondary steel beam 2 are I-shaped steel structures), then the entire device is slid on the secondary steel beam 2 by using the adjusting balls 10, and a preliminary stop is performed after the L-shaped magnetic pressing plate 4 contacts the edge position of the main steel beam 1, the inner side of the L-shaped magnetic pressing plate 4 is adaptively connected with the edge of the main steel beam 1, and then the positions of the two C-shaped sliding frames 9 are adjusted to make the two C-shaped sliding frames 9 in a symmetrical state on the secondary steel beam 2, during the adjustment, the rotation between the universal hinge seat 5 and the universal ball 6 is used for compensating the adjustment angle, and the expansion and contraction of the compensation telescopic rod 7 is used for compensating the adjustment displacement, so that the adjusted welding guide rail 3 is located at the edge position of the connection between the main steel beam 1 and the secondary steel beam 2, and then the hydraulic limiting columns 11 are controlled to be pressed on the secondary steel beam 2.

[0039] Based on the above advantages, the positioning and limiting of the welding guide rail 3 are realized, which facilitates the welding construction of the welding mechanism on the welding guide rail 3 on the connection part between the main steel beam 1 and the secondary steel beam 2, the same installation method can be used to install the welding guide rail 3 at the bottom of the main steel beam 1, which facilitates the subsequent welding of the bottom of the connection part between the main steel beam 1 and the secondary steel beam 2, realizes the multi-angle welding of the high-altitude steel structure, and reduces the overall welding difficulty.

[0040] The side wall of the welding guide rail 3 is fixed with two symmetrically arranged steering seats 12, one side of the welding guide rail 3 is provided with four retaining frames 13, the four retaining frames 13 are respectively fixed with two symmetrically arranged hydraulic lifting rods 14, and the output ends of the hydraulic lifting rods 14 are connected with a tightening assembly for tightening the bolt module.

[0041] Further, the screwing assembly comprises a screwing motor 15 fixed to the output end of the hydraulic lifting rod 14, and a bolt screwing sleeve 17 is fixed to the output end of the screwing motor 15 through a pushing shaft 16;

[0042] It should be noted that before the welding construction, the high-strength bolt is screwed into the connecting steel plate between the main steel beam 1 and the secondary steel beam 2, and a nut is screwed into the other end of the high-strength bolt, and then the hydraulic lifting rod 14 moves the bolt screwing sleeve 17 to the lowest high-strength bolt, and the pushing shaft 16 is used to allow the bolt screwing sleeves 17 on both sides to be sleeved on the end of the high-strength bolt and the nut, respectively, and then the two screwing motors 15 are controlled to drive rotation in opposite directions, so that the high-strength bolt and the nut are preliminarily tightened, and then the tightening is symmetrically performed from the center to the periphery, and the bolt screwing sleeve 17 is deflected inward by the turning seat 12, so as to facilitate the tightening of the high-strength bolt on the inner side of the main steel beam 1, thereby solving the problem that the high-strength bolt on the inner side of the I-beam is inconvenient to tighten during construction, and after the welding construction at the bottom and the top of the subsequent connecting part is completed, the high-strength bolt is tightened again by using the bolt screwing sleeve 17;

[0043] Based on the above benefits, the tightening degree of the front and rear bolt tightening construction can be standardized controlled, avoiding the process of manual tightening, which is based on experience, resulting in over-tightening or over-tightening at different stages, so that the residual stress of welding is large, affecting the connection strength of the overall steel structure;

[0044] The inner wall of the welding guide rail 3 is slidably connected with a moving seat 19, the moving seat 19 is connected with a welding platform 22 through a compensation assembly, the welding platform 22 is connected with a welding mechanism for welding the main steel beam 1 and the secondary steel beam 2, and the welding platform 22 is provided with a path offset assembly on one side for controlling the welding path.

[0045] Further, the compensation assembly comprises two position adjusting sliding blocks 20 fixed to the bottom of the welding platform 22, the moving seat 19 is provided with two receiving grooves, and the two ends of the receiving grooves are fixedly connected with the two ends of the position adjusting sliding blocks 20 through two reciprocating extension rods 21, the welding mechanism comprises a welding control seat 23 fixed to the welding platform 22, the welding control seat 23 is connected with a welding mechanical arm 24, and the path offset assembly comprises an arc surface pushing plate 25 fixed to the side wall of the welding platform 22, the two upper retaining frames 13 are fixedly connected with a wave-shaped guide rail 18, and the wave-shaped guide rail 18 is provided with a plurality of arc grooves matched with the arc surface pushing plate 25;

[0046] It should be noted that: when carrying out welding construction, the moving seat 19 is controlled to slowly slide on the welding guide rail 3, then the two position adjusting sliding blocks 20 in the receiving groove of the moving seat 19 will drive the welding platform 22 to move synchronously, the movement of the welding platform 22 will drive the welding control seat 23 and the arc surface pressing plate 25 to move together, in the process of slow movement of the arc surface pressing plate 25, the arc surface pressing plate 25 will be in constant contact with the wave-shaped guide rail 18, the arc surface pressing plate 25 is made of spring steel, through the elastic deformation performance of itself, the arc surface pressing plate 25 will reciprocate in and out of the arc surface groove of the wave-shaped guide rail 18, so as to exert a reciprocating pushing and pulling force on the welding platform 22 perpendicular to the moving direction of the welding platform 22, so that the welding platform 22 moves reciprocally under the action of the reciprocating rods 21 on both sides of the position adjusting sliding blocks 20, so that the welding control seat 23 and the welding mechanical arm 24 also move reciprocally perpendicular to the moving direction of themselves;

[0047] Based on the above benefits: this will cause the welding path of the welding mechanical arm 24 to be Z-shaped, so that the welding heat input is more uniform, the welding deformation and residual stress are reduced, and the overall welding quality is improved, at the same time, by changing the welding path, the weld metal can be made more dense, the mechanical properties of the weld are improved, and the strength and toughness of the entire steel structure building are enhanced;

[0048] In use, the two C-shaped sliding frames 9 are sleeved on the two sides of the secondary steel beam 2 (the primary steel beam 1 and the secondary steel beam 2 are both I-shaped steel structures), then the entire device is slid on the secondary steel beam 2 by using the adjusting ball 10, and after the L-shaped magnetic pressing plate 4 contacts the edge position of the primary steel beam 1, preliminary stopping is carried out, the inside of the L-shaped magnetic pressing plate 4 is adapted and connected to the edge of the primary steel beam 1 for magnetic attraction and adhesion, then the positions of the two C-shaped sliding frames 9 are adjusted to make the two C-shaped sliding frames 9 in a symmetrical state on the secondary steel beam 2, in the adjusting process, the rotation between the universal hinge seat 5 and the universal ball 6 is used for compensating the adjustment angle, and the extension and contraction of the compensation extension rod 7 is used for compensating the adjustment displacement, so that the adjusted welding guide rail 3 is located at the edge position of the connection between the primary steel beam 1 and the secondary steel beam 2, then the hydraulic limiting column 11 is controlled to be pressed on the secondary steel beam 2, so that the positioning and limiting of the welding guide rail 3 are realized, and the welding construction of the welding mechanism on the welding guide rail 3 on the connection part between the primary steel beam 1 and the secondary steel beam 2 is facilitated, the same installation mode can be adopted to install the welding guide rail 3 at the bottom of the primary steel beam 1, so as to facilitate the subsequent welding of the bottom of the connection part between the primary steel beam 1 and the secondary steel beam 2, realize multi-angle welding of the high-altitude steel structure, and reduce the overall welding difficulty;

[0049] Before the welding construction is carried out, the high-strength bolt is screwed into the connecting steel plate between the main steel beam 1 and the secondary steel beam 2, and the nut is screwed on the other end of the high-strength bolt, then the hydraulic lifting rod 14 moves the bolt tightening sleeve 17 to the lowest high-strength bolt, the advancing shaft 16 is used to allow the bolt tightening sleeves 17 on both sides to be sleeved on the end of the high-strength bolt and the nut, then the two tightening motors 15 are controlled to drive rotation in opposite directions, so that the high-strength bolt and the nut are preliminarily tightened, then the tightening is symmetrically applied from the center to the periphery, the bolt tightening sleeve 17 is deflected inward by the turning seat 12, so as to facilitate the tightening of the high-strength bolt on the inner side of the main steel beam 1, and the problem that the high-strength bolt on the inner side of the I-beam is inconvenient to tighten during construction is solved, after the welding construction at the bottom and the top of the subsequent connecting part is completed, the high-strength bolt is tightened again by using the bolt tightening sleeve 17, and the tightening degree of the bolt tightening construction before and after can be standardized controlled, so as to avoid the process of manual tightening, which is only based on experience, so as to cause the tightening to be too loose or too tight at different stages, and the residual stress of welding is large, and the connecting strength of the overall steel structure is affected.

[0050] During the welding construction, the moving seat 19 is controlled to slowly slide on the welding guide rail 3, so that the two position adjusting sliding blocks 20 in the receiving groove of the moving seat 19 drive the welding platform 22 to move synchronously, the movement of the welding platform 22 drives the welding control seat 23 and the arc surface pressing plate 25 to move together, in the process of slow movement of the arc surface pressing plate 25, the arc surface pressing plate 25 is in constant contact with the wave-shaped guide rail 18, the arc surface pressing plate 25 is made of spring steel, and through the elastic deformation performance of the arc surface pressing plate 25, the arc surface pressing plate 25 reciprocates in and out of the arc surface groove of the wave-shaped guide rail 18, so as to exert a reciprocating pushing and pulling force on the welding platform 22 perpendicular to the movement direction of the welding platform 22, so that the welding platform 22 moves reciprocally under the action of the reciprocating rods 21 on both sides through the position adjusting sliding blocks 20, so that the welding control seat 23 and the welding mechanical arm 24 also move reciprocally perpendicular to the movement direction of the welding control seat 23 and the welding mechanical arm 24, so that the welding path of the welding mechanical arm 24 is in the shape of Z, the welding heat input is more uniform, the welding deformation and residual stress are reduced, the overall welding quality is improved, and meanwhile, by changing the welding path, the weld metal can be made more dense, the mechanical properties of the weld are improved, and then the strength and toughness of the entire steel structure building are enhanced.

[0051] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A welding apparatus for steel structure buildings, comprising a welding guide rail (3) for controlling the welding of a main steel beam (1) and a secondary steel beam (2), characterized in that, A bolt module for fastening connection is provided between the main steel beam (1) and the secondary steel beam (2). The side wall of the welding guide rail (3) is assembled with the main steel beam (1) through two L-shaped magnetic pressure plates (4). The side wall of the L-shaped magnetic pressure plate (4) is connected to a C-shaped sliding frame (9) for adjusting the installation position through a universal assembly. The inner side wall of the C-shaped sliding frame (9) is connected to an adjusting ball (10) for positioning the welding guide rail (3). The welding guide rail (3) has two symmetrically arranged steering seats (12) fixed on its side wall. The welding guide rail (3) has four fixed frames (13) on one side. The four fixed frames (13) are respectively fixed with two symmetrically arranged hydraulic lifting rods (14). The output end of the hydraulic lifting rods (14) is connected to a tightening assembly for tightening the bolt module. The inner side wall of the welding guide rail (3) is slidably connected to a moving seat (19). The moving seat (19) is connected to a welding platform (22) through a compensation assembly. The welding platform (22) is connected to a welding mechanism for welding the main steel beam (1) and the secondary steel beam (2). The welding platform (22) has a path offset assembly for controlling the welding path on one side. The path offset component includes an arc-shaped push plate (25) fixed on the side wall of the welding platform (22), and two fixed frames (13) located above are fixedly connected to a waveform guide rail (18). The waveform guide rail (18) has multiple arc-shaped grooves that are adapted to the arc-shaped push plate (25).

2. The welding device for steel structure buildings according to claim 1, characterized in that, The bolt module includes connecting steel plates located on both sides of the secondary steel beam (2), and the connecting steel plates are provided with multiple high-strength bolts.

3. The welding device for steel structure buildings according to claim 1, characterized in that, The universal assembly includes a universal hinge seat (5) fixed on an L-shaped magnetic pressure plate (4). The universal hinge seat (5) is rotatably connected to a compensating telescopic rod (7) via a universal ball (6). The compensating telescopic rod (7) is rotatably connected to a C-shaped sliding frame (9) via a steering knuckle (8).

4. A welding device for steel structure buildings according to claim 1, characterized in that, The upper and lower inner end faces of the C-shaped sliding frame (9) are both connected to the adjusting ball (10) to facilitate the sliding of the C-shaped sliding frame (9) on the secondary steel beam (2). Two sets of hydraulic limit columns (11) are fixedly connected to both sides of the C-shaped sliding frame (9).

5. A welding device for steel structure buildings according to claim 1, characterized in that, The sidewall of the welding guide rail (3) is rotatably connected to the retaining frame (13) located below via a steering seat (12).

6. A welding apparatus for steel structure buildings according to claim 1, characterized in that, The tightening assembly includes a tightening motor (15) fixed to the output end of the hydraulic lifting rod (14), and the output end of the tightening motor (15) is fixed with a bolt tightening sleeve (17) via a push shaft (16).

7. A welding device for steel structure buildings according to claim 1, characterized in that, The compensation component includes two adjusting sliders (20) fixed to the bottom of the welding platform (22). The moving seat (19) has two storage slots. The two ends of the storage slots are fixedly connected to the two ends of the adjusting sliders (20) respectively by two reciprocating telescopic rods (21).

8. A welding apparatus for steel structure buildings according to claim 1, characterized in that, The welding mechanism includes a welding control seat (23) fixed on the welding platform (22), and the welding control seat (23) is connected to a welding robotic arm (24).

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