Tool for constructional engineering welding

Abstract

The invention relates to the technical field of constructional engineering welding, in particular to a constructional engineering welding tool which comprises a switching mechanism arranged on the upper side of a bottom plate and an adjusting mechanism located on the outer side of the switching mechanism, and a locking mechanism is arranged on the adjusting mechanism; stable limiting and accurate butt joint of section steel with different sections can be achieved through rapid structural transformation of the welding tool, the same set of welding tool can adapt to steel with various section shapes of H-shaped steel, U-shaped steel, square pipes and angle steel, meanwhile, the size adjusting capacity is achieved so as to meet the machining requirements of the section steel with different specifications and sizes, and the welding tool is suitable for large-scale popularization and application. Therefore, the equipment investment and the warehouse management cost are remarkably reduced, the quick remodeling response capability of the production line to the section steel with different sections is greatly improved, and meanwhile, effective technical support is provided for a multi-variety and small-batch production mode; and adaptive adjustment can be carried out according to section contours of different profile steels, so that the profile steels can be stably locked on the limiting welding tool.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering welding, in particular to a building engineering welding tool. BACKGROUND

[0002] In the field of building engineering, the welding tool is the key process equipment in the process of steel structure manufacturing and installation, and its core function is to accurately position, reliably clamp, stably support or flexibly turn the welded parts, so as to effectively guarantee the precision, quality, efficiency and safety of the welding operation; Because various types of materials produced by the steel plant, such as H-shaped steel, U-shaped steel and square tube, are usually limited by production process and transportation conditions, they are all factory-finished with fixed standard length, and the actual building structure often needs to be designed with larger span continuous components, therefore, the welding tool is generally used in building engineering to perform end butt welding of multiple standard sections, so as to obtain overall components meeting the design length and mechanical property requirements.

[0003] In the prior art, in order to realize the end butt welding of standard length steel, a special welding tool matching the cross-sectional shape of the steel is usually needed, and during operation, two same steels to be spliced are clamped on the special limiting welding tool, so as to accurately position and rigidly lock the steels, and at the same time, ensure that the butt ends of the two steels are flat and aligned and maintain a preset gap, finally, the joint between the two steels is welded by welding equipment, thereby completing the firm connection between the two steels and forming an overall component meeting the design requirements.

[0004] However, the traditional butt welding of different cross-sectional shape steels has the following problems: in the prior art, since different cross-sectional steels need to be equipped with special welding tools during butt welding, not only does it significantly increase the initial investment cost of special welding tools in building construction process, but also the large number of welding tools leads to increased storage cost, complicated management and maintenance, and in the welding process, when different cross-sectional steels are switched for welding operation, the welding tool needs to be completely replaced and re-adjusted, which not only prolongs the production and processing downtime and affects the overall production efficiency, but also makes it difficult for welding processing to adapt to multi-variety and small-batch production requirements. SUMMARY

[0005] To achieve the above purpose, the present application provides the following technical scheme: a building engineering welding tool, comprising a bottom plate, a conversion mechanism and an adjusting mechanism located outside the conversion mechanism are arranged on the upper side of the bottom plate, and a locking mechanism is arranged on the adjusting mechanism.

[0006] The conversion mechanism comprises a horizontal movement adjusting part arranged on the upper side of the base plate and used for left-right movement adjustment, a butt joint positioning part arranged on the horizontal movement adjusting part, an adjusting limiting part arranged on the butt joint positioning part and used for adjusting and limiting the butt joint of the H-shaped steel, the U-shaped steel, the square tube and the angle steel, and a supporting and reinforcing part arranged on the adjusting limiting part and used for supporting and reinforcing the adjusting limiting part.

[0007] The adjusting mechanism comprises a lifting adjusting part arranged on the upper side of the base plate and used for up-down movement adjustment, and an adjusting driving part arranged on the lifting adjusting part.

[0008] The locking mechanism comprises a driven adjusting part arranged on the adjusting driving part and used for left-right movement adjustment, and a butt joint locking part arranged on the driven adjusting part and used for locking the butt joint of the H-shaped steel, the U-shaped steel, the square tube and the angle steel.

[0009] Preferably, the horizontal movement adjusting part comprises rails symmetrically arranged on the upper side of the base plate, electric sliding blocks symmetrically arranged on the rails and used for left-right movement, and a moving table symmetrically arranged on the upper side of the electric sliding blocks.

[0010] Preferably, the butt joint positioning part comprises positioning seats symmetrically arranged on the upper side of the moving table, rotating grooves penetrating through the positioning seats from front to back, positioning grooves one penetrating through the positioning seats from front to back and arranged on the lower side of the rotating grooves and close to the center of the rails, and positioning grooves two penetrating through the positioning seats from front to back and symmetrically arranged on the upper side of the rotating grooves.

[0011] Preferably, the adjusting limiting part comprises an L-shaped limiting table rotatably arranged between the two positioning seats, rotating shafts symmetrically arranged on the two sides of the L-shaped limiting table and rotatably connected with the corresponding rotating grooves, knobs fixedly arranged on the sides of the rotating shafts away from the L-shaped limiting table, and screw grooves symmetrically arranged on the ends of the horizontal section and the vertical section of the L-shaped limiting table away from the rotating shafts and matched with the positioning grooves one and the positioning grooves two.

[0012] Preferably, the locking part comprises studs threadedly connected in the screw grooves, latches fixedly arranged on the sides of the studs close to the corresponding positioning seats and matched with the positioning grooves one and the positioning grooves two, and hexagonal heads fixedly arranged on the sides of the latches away from the studs and matched with the external hexagonal wrenches.

[0013] Preferably, the supporting and reinforcing part comprises a first air cylinder fixedly arranged on the lower side of the moving table, reinforcing tables arranged on the extending and retracting ends of the first air cylinder and used for up-down movement, guide rods one symmetrically arranged on the lower side of the reinforcing tables and slidably connected with the moving table, and inclined surfaces arranged on the opposite sides of the two reinforcing tables.

[0014] Preferably, the lifting adjusting part comprises a fixed table fixedly arranged on the upper side of the base plate through a plurality of supporting columns, a plurality of air cylinders II symmetrically fixedly arranged on the upper side of the fixed table, and a U-shaped lifting table symmetrically fixedly arranged on the upper side of the U-shaped lifting table and movably connected with the guide rods II.

[0015] Preferably, the adjusting driving part comprises a motor fixedly arranged on the right side of the U-shaped lifting table, a bidirectional screw rod rotatably connected with the U-shaped lifting table and fixedly arranged at the driving end of the motor, and guide rods III symmetrically fixedly arranged on the inner side of the U-shaped lifting table and located on the front and back sides of the bidirectional screw rod.

[0016] Preferably, the driven adjusting part comprises sliding seats symmetrically slidably arranged on the guide rods III and moving leftward and rightward, an adjusting plate fixedly arranged on the lower side of the front and back sliding seats, and a threaded seat fixedly arranged on the upper side of the adjusting plate and located between the two sliding seats and threadedly connected with the corresponding bidirectional screw rod.

[0017] Preferably, the butt joint locking part comprises a locking block fixedly arranged on the lower side of the adjusting plate, and inclined surfaces symmetrically arranged on the lower ends of the locking block and used for locking the diagonal steel, and a V-shaped groove arranged on the lower side of the locking block and penetrating through the front and back sides and used for locking the square tube.

[0018] Compared with the prior art, the present application has the following advantages: 1. The present application can realize stable positioning and precise butt joint of different cross-section steel through the cooperation of the conversion mechanism, the adjusting mechanism and the locking mechanism, so that the same set of welding tool can be adapted to H-shaped steel, U-shaped steel, square tube and angle steel with various cross-section shapes, and also has size adjusting capability to adapt to the processing needs of different specifications and sizes of steel, thereby not only significantly reducing the equipment investment and warehouse management cost, but also greatly improving the quick response capability of the production line to different cross-section steels, and providing effective technical support for multi-variety and small-batch production mode.

[0019] 2. The present application can also realize adaptive adjustment according to the cross-section profile of different steels through the cooperation of the conversion mechanism, the adjusting mechanism and the locking mechanism, so as to stably lock the steels on the limiting welding tool, thereby providing reliable rigid support and locking for various cross-section steels during welding, effectively controlling the deviation of the butt joint part of the steel, thereby ensuring the stability of the steel end splicing, and maintaining the high-precision butt joint requirement, and thus making the welding joints of different cross-section steels all meet the specified welding precision standard. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The figure is a structural schematic view of the present application.

[0021] Figure 2 The figure is a structural schematic view of the conversion mechanism.

[0022] Figure 3 Part structure diagram of horizontal adjustment part.

[0023] Figure 4 Part structure diagram of adjustment limiting part.

[0024] Figure 5 Part structure diagram of locking part.

[0025] Figure 6 Part structure diagram of supporting and reinforcing part.

[0026] Figure 7 Part structure diagram of adjustment mechanism.

[0027] Figure 8 Part structure diagram of adjustment driving part.

[0028] Figure 9 Part structure diagram of locking mechanism.

[0029] Figure 10 H-shaped steel assembly positioning diagram.

[0030] Figure 11 U-shaped steel assembly positioning diagram.

[0031] Figure 12 Square tube assembly positioning diagram.

[0032] Figure 13 Angle steel assembly positioning diagram.

[0033] In the figure: 1, base plate; 2, conversion mechanism; 21, horizontal adjustment part; 211, guide rail; 212, electric sliding block; 213, moving table; 22, butt joint positioning part; 221, positioning seat; 222, rotating groove; 223, positioning groove one; 224, positioning groove two; 23, adjustment limiting part; 231, L-shaped limiting table; 232, rotating shaft; 233, knob; 234, threaded groove; 24, locking part; 241, stud; 242, bolt; 243, hexagonal head; 25, supporting and reinforcing part; 251, air cylinder one; 252, reinforcing table; 253, guide rod one; 3, adjustment mechanism; 31, lifting adjustment part; 311, fixed table; 312, air cylinder two; 313, U-shaped lifting table; 314, guide rod two; 32, adjustment driving part; 321, motor; 322, bidirectional screw; 323, guide rod three; 4, locking mechanism; 41, driven adjustment part; 411, sliding seat; 412, adjustment plate; 413, threaded seat; 42, butt joint locking part; 421, locking block; 422, V-shaped groove. DETAILED DESCRIPTION

[0034] 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.

[0035] Please see Figure 1 A welding fixture for building construction includes a base plate 1, a conversion mechanism 2 and an adjustment mechanism 3 located outside the conversion mechanism 2 on the upper side of the base plate 1, and a locking mechanism 4 on the adjustment mechanism 3.

[0036] Please see Figure 1 and Figure 2 The conversion mechanism 2 includes a horizontal adjustment part 21 disposed on the upper side of the base plate 1 for left and right movement adjustment. The horizontal adjustment part 21 is provided with a docking positioning part 22. The docking positioning part 22 is provided with an adjustment limiting part 23 that adapts to the stable positioning and precise docking requirements of various cross-sectional shapes of steel such as H-beams, U-beams, square tubes and angle steel through structural conversion adjustment, and a support and reinforcement part 25 that supports and reinforces the adjustment limiting part 23. The adjustment limiting part 23 is provided with a locking part 24 that cooperates with the docking positioning part 22 to stably lock the adjustment limiting part 23.

[0037] Please see Figure 2 and Figure 3 The lateral adjustment unit 21 includes a guide rail 211 symmetrically fixed on the upper side of the base plate 1, and an electric slider 212 symmetrically slidably mounted on the guide rail 211 for left and right movement. A moving platform 213 is fixedly mounted on the upper side of the symmetrical electric sliders 212.

[0038] Please see Figure 2 and Figure 3 The docking positioning part 22 includes a positioning seat 221 symmetrically fixed on the upper side of the moving platform 213. The positioning seat 221 has a through-rotating groove 222. The positioning seat 221 has a first positioning groove 223 through-rotating groove 223 on the lower side of the through-rotating groove 222 and on the side near the center of the guide rail 211. The positioning seat 221 has a second positioning groove 224 through-rotating groove 224 symmetrically on the left and right sides above the through-rotating groove 222.

[0039] The electric slider 212 can drive the corresponding moving platform 213 to move left and right along the guide rail 211 for adjustment, and the moving platform 213 will then drive the corresponding positioning seat 221 to move and adjust synchronously.

[0040] Please see Figure 2 , Figure 4 and Figure 5The adjusting limiting part 23 includes an L-shaped limiting platform 231 rotatably disposed between two positioning seats 221. The L-shaped limiting platform 231 has symmetrically fixed rotating shafts 232 on its front and rear sides, which are rotatably connected to the corresponding rotating grooves 222. A knob 233 is fixedly disposed on the side of the rotating shaft 232 away from the L-shaped limiting platform 231. The horizontal and vertical sections of the L-shaped limiting platform 231 are symmetrically provided with threaded grooves 234 that cooperate with the positioning groove 1 223 and the positioning groove 224.

[0041] Please see Figure 2 , Figure 4 and Figure 5 The locking part 24 includes a stud 241 with an internal thread connection to the threaded groove 234. A pin 242 is fixedly provided on the side of the stud 241 near the corresponding positioning seat 221, which is engaged with the positioning groove 1 223 and the positioning groove 224. A hexagonal head 243 is fixedly provided on the side of the pin 242 away from the stud 241, which is used to assemble with an external hexagonal wrench (not shown in the figure).

[0042] When using the L-shaped limiting platform 231 to stably limit the movement of H-beams or U-beams, first use the knob 233 to rotate and adjust the shaft 232 and the L-shaped limiting platform 231 until the longitudinal extension of the L-shaped limiting platform 231 is completely vertical and located below the transverse extension. Simultaneously, the transverse extensions of the two symmetrical L-shaped limiting platforms 231 are completely horizontal and located on opposite sides of the two vertical sections (e.g., ...). Figure 10 and Figure 11 As shown), at this time, the threaded groove 234 on the L-shaped limiting platform 231 is exactly aligned with the corresponding positioning groove 223. Then, using an external hex wrench and hex head 243, the stud 241 is threaded into the corresponding threaded groove 234. The pin 242 is simultaneously inserted and positioned in the corresponding positioning groove 223, thereby stably locking the L-shaped limiting platform 231 in the current state. Next, the horizontal sections of two H-beams or U-beams are placed on the upper side of the horizontal sections of the two symmetrical L-shaped limiting platforms 231, and the vertical sections of the H-beams or U-beams are placed outside the vertical sections of the corresponding L-shaped limiting platforms 231. At the same time, the ends of the two H-beams or U-beams are stably connected. Then, the electric slider 212 drives the two moving platforms 213 to move in opposite directions. The positioning seat 221 then drives the two symmetrical L-shaped limiting platforms 231 to move in opposite directions synchronously until the vertical section of the L-shaped limiting platform 231 is stably attached to the corresponding vertical section on the H-beam or U-beam (e.g., Figure 10 or Figure 11 As shown), this provides stable support and limiting for the two H-beams or U-beams, and in conjunction with the locking mechanism 4, it can stably lock and position the H-beams or U-beams on the L-shaped limiting platform 231.

[0043] When adjusting the L-shaped limiting platform 231 to stabilize and limit the square tube or angle steel, first use the knob 233 to rotate the shaft 232 and the L-shaped limiting platform 231 until the opening of the L-shaped limiting platform 231 faces upward and the longitudinal extension section and the transverse extension section are symmetrically distributed (e.g., Figure 12 or Figure 13 As shown), at this time, the threaded groove 234 on the L-shaped limiting platform 231 is exactly aligned with the corresponding positioning groove 224. Then, using an external hex wrench and hex head 243, the stud 241 is threaded into the corresponding threaded groove 234. The pin 242 is simultaneously inserted and positioned in the corresponding positioning groove 224, thereby stably locking the L-shaped limiting platform 231 in the current state. Next, the right-angled ends of the two square tubes or angle steels are placed in the upward-facing opening of the corresponding single L-shaped limiting platform 231, and the ends of the two square tubes or angle steels are stably connected. Thus, the two extensions of the L-shaped limiting platform 231 stably limit and support the square tubes or angle steels (e.g., Figure 12 or Figure 13 As shown in the figure, and in conjunction with the locking mechanism 4, the square tube or angle steel can be stably locked and positioned on the L-shaped limiting platform 231.

[0044] The above-described operation method enables stable positioning and precise docking of steel sections with different cross-sections through rapid structural changes in the welding fixture. This allows the same welding fixture to be adapted to various cross-sectional shapes of steel, including H-beams, U-beams, square tubes, and angle steel. It also has the ability to adjust the size to meet the processing requirements of steel sections with different specifications and dimensions. This not only significantly reduces equipment investment and warehousing management costs but also greatly improves the production line's ability to quickly change to different cross-section steel sections. Furthermore, it provides effective technical support for multi-variety, small-batch production models.

[0045] Please see Figure 2 and Figure 6 The support and reinforcement part 25 includes a cylinder 251 fixedly installed on the lower side of the moving platform 213. The telescopic end of the cylinder 251 is fixedly installed with a reinforcement platform 252 that moves up and down. The reinforcement platform 252 is symmetrically fixedly installed with guide rods 253 that are slidably connected to the moving platform 213 on the lower side. The opposite sides of the two reinforcement platforms 252 are both inclined surfaces.

[0046] When the H-beam or U-beam is stably limited by the two symmetrical L-shaped limiting platforms 231, the cylinder 251 drives the reinforcing platform 252 to move upward until the upper surface of the reinforcing platform 252 is in contact with the lower surface of the corresponding horizontal section of the L-shaped limiting platform 231 (e.g., Figure 10 or Figure 11 As shown in the figure, the L-shaped limiting platform 231 supporting and limiting H-shaped steel or U-shaped steel is supported and reinforced by the reinforcing platform 252, which to a certain extent prevents the L-shaped limiting platform 231 from bending and deforming downward during the supporting and limiting process.

[0047] When the L-shaped limiting platform 231 is used to stably limit the square tube or angle steel, the cylinder 251 drives the reinforcing platform 252 to move upward until the inclined surface on the reinforcing platform 252 is in contact with the lower side of the corresponding extension of the L-shaped limiting platform 231 (e.g., Figure 12 or Figure 13 As shown in the figure, the L-shaped limiting platform 231 supporting the limiting square tube or angle steel is supported and reinforced by the reinforcing platform 252, which to a certain extent prevents the L-shaped limiting platform 231 from bending and deforming downward during the supporting and limiting process.

[0048] Please see Figure 1 The adjustment mechanism 3 includes a lifting adjustment part 31 disposed on the upper side of the base plate 1 and used for vertical movement adjustment, and an adjustment drive part 32 is disposed on the lifting adjustment part 31.

[0049] Please see Figure 1 and Figure 7 The lifting adjustment unit 31 includes a fixed platform 311 fixedly mounted on the upper side of the base plate 1 by multiple support columns. A second cylinder 312 is symmetrically fixedly mounted on the upper side of the fixed platform 311. A U-shaped lifting platform 313 that moves up and down is fixedly mounted on the telescopic end of the second cylinder 312. A second guide rod 314 that is slidably connected to the fixed platform 311 is symmetrically fixedly mounted on the upper side of the U-shaped lifting platform 313.

[0050] Please see Figure 1 , Figure 7 and Figure 8 The adjustment drive unit 32 includes a motor 321 fixedly installed on the right side of the U-shaped lifting platform 313. The drive end of the motor 321 is fixedly provided with a bidirectional screw 322 that is rotatably connected to the U-shaped lifting platform 313. Guide rods 323 are symmetrically fixedly installed on the inner side of the U-shaped lifting platform 313 and on the front and rear sides of the bidirectional screw 322.

[0051] The cylinder 312 can drive the U-shaped lifting platform 313 to move up and down for adjustment. The U-shaped lifting platform 313 then drives the corresponding motor 321, bidirectional screw 322 and guide rod 323 to move up and down synchronously for adjustment.

[0052] Please see Figure 1 and Figure 7 The locking mechanism 4 includes a driven adjustment part 41 disposed on the adjustment drive part 32 and used to adjust left and right movement in conjunction with the adjustment drive part 32. The driven adjustment part 41 is provided with a butt locking part 42 that is adapted to lock various cross-sectional shapes of steel such as H-beams, U-beams, square tubes and angle steel in conjunction with the adjustment limit part 23.

[0053] Please see Figure 7 , Figure 8 and Figure 9The driven adjustment part 41 includes a slide block 411 that is symmetrically slidably disposed on the guide rod 323 and moves left and right. An adjustment plate 412 is fixedly disposed on the lower side of the front and rear symmetrical slide blocks 411. A threaded seat 413 that is threadedly connected to the corresponding bidirectional screw 322 is fixedly disposed on the upper side of the adjustment plate 412 and located between the two slide blocks 411.

[0054] The motor 321 can drive the bidirectional screw 322 to rotate in a specific direction. The bidirectional screw 322 then moves synchronously in opposite directions or towards each other through the synchronous thread transmission with the symmetrical thread seat 413. The thread seat 413 then drives the corresponding adjusting plate 412 and slide 411 to move left and right along the guide rod 323 for adjustment, thereby causing the symmetrical adjusting plate 412 to move synchronously in opposite directions or towards each other along the guide rod 323.

[0055] Please see Figure 7 , Figure 8 and Figure 9 The docking locking part 42 includes a locking block 421 fixedly disposed on the lower side of the adjusting plate 412. The lower end of the locking block 421 is symmetrically provided with inclined surfaces for locking the angle steel. The lower side of the locking block 421 is provided with a V-shaped groove 422 that runs through the front and back and locks the square tube.

[0056] When two H-beams or U-beams are stably supported and limited on two symmetrical L-shaped limiting platforms 231, the cylinder 312 drives the U-shaped lifting platform 313 to move downward. The guide rod 323 then drives the corresponding sliding block 411 and the locking block 421 on the lower side of the adjusting plate 412 to move downward synchronously until the locking block 421 stably adheres and presses against the upper surface of the horizontal section of the corresponding H-beam or U-beam. The two H-beams or U-beams are then stably supported and limited on the two symmetrical L-shaped limiting platforms 231 without any forward or backward displacement (e.g., ...). Figure 10 or Figure 11 As shown), at this time, welding can be performed on the joint of the two H-beams or U-beams joined at both ends using welding equipment (not shown in the figure). The motor 321 drives the bidirectional screw 322 to rotate in a specific direction, causing the symmetrical adjusting plates 412 to move synchronously in opposite directions until the adjusting plates 412 are stably fitted to the inner side of the corresponding vertical section on the upper side of the H-beam (as shown in the figure). Figure 10 As shown in the figure, this further limits and locks the H-beam.

[0057] When the two square tubes are stably supported on the corresponding L-shaped limiting platform 231, the motor 321 first drives the adjusting plate 412 and the locking block 421 to move left and right until the V-groove 422 on the locking block 421 is aligned with the right-angle end of the upper end of the corresponding square tube. Then, the cylinder 312 drives the adjusting plate 412 and the locking block 421 to move downward until the V-groove 422 on the locking block 421 is stably fitted and pressed against the right-angle end of the upper end of the corresponding square tube. The two square tubes are then stably supported on the corresponding L-shaped limiting platform 231 and will not shift back and forth (e.g., Figure 12 As shown in the figure, the joint of the two square tubes can be welded by welding equipment (not shown in the figure). At the same time, the locking of the square tube can be released during the welding process to allow the square tube to be flipped and adjusted. After the flipping and adjustment is completed, the square tube is quickly locked and the joint is welded and reinforced, thereby completing the overall welding process of the joint of the two square tubes.

[0058] It should be noted that the welding method can be existing electric arc welding or resistance welding, or other methods.

[0059] When the two angle steels are stably supported and limited on the corresponding L-shaped limiting platform 231, the adjusting plate 412 and locking block 421 are first moved left and right by the motor 321 until the symmetrical inclined surface at the lower end of the locking block 421 is aligned with the upward opening of the corresponding angle steel. Then, the adjusting plate 412 and locking block 421 are moved downward by the cylinder 312 until the symmetrical inclined surface at the lower end of the locking block 421 is stably pressed against the inner wall of the upward opening of the corresponding angle steel. The two angle steels are then stably supported and limited on the corresponding L-shaped limiting platform 231 and will not shift back and forth (e.g., Figure 13 As shown in the figure, the joints of the two angle steels connected at both ends can be welded using welding equipment (not shown in the figure).

[0060] The above-described operation method allows for adaptive adjustments based on the cross-sectional profiles of different steel sections to ensure stable locking onto the limiting welding fixture. This provides reliable rigid support and locking for various cross-sectional steel sections during welding, effectively controlling the offset of the steel section joints and ensuring the stability of the steel end splicing. It also maintains high precision requirements for the joints, enabling welded joints of different cross-sectional steel sections to meet the specified welding precision standards.

[0061] It should be noted that existing technologies can also use specialized welding fixtures to stably limit and lock the connection of steel sections with one or two specific cross-sectional shapes and a single size specification. Although this is technically easier to implement and simpler to operate, it only solves the problem of limiting and locking the connection of steel sections with a limited number of cross-sectional shapes and a single size specification. When using this existing technology to stably limit and lock the connection of steel sections with multiple cross-sectional shapes and different sizes, it is still necessary to change and disassemble the welding fixture, resulting in high initial investment costs for the welding fixture, long production downtime, and low efficiency. However, in the solution of this invention, the connection positioning part 22, through structural conversion adjustment and in conjunction with the adaptive adjustment of the connection locking part 42, can achieve stable limiting of steel sections with multiple cross-sectional shapes and different sizes. The positioning and docking locking significantly reduce equipment investment and warehousing management costs, and greatly improve the production line's ability to quickly change over steel sections of different cross-sections, providing effective technical support for multi-variety, small-batch production modes. Meanwhile, compared to existing welding fixtures, the added mechanical structures such as the conversion mechanism 2 and locking mechanism 4 are all conventional and ordinary mechanical components, without any high-cost precision parts. They require only a one-time investment for long-term use, thus the cost of adding these structures is low. Compared to the significant reduction in equipment and warehousing management costs and the increased production efficiency from rapid changeover, the cost of adding these structures is negligible. In summary, the above-mentioned technical solution of this invention is a specific improvement based entirely on the existing technology and aimed at solving the technical problems.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A welding fixture for building construction, comprising a base plate, characterized in that: The upper side of the base plate is provided with a conversion mechanism and an adjustment mechanism located outside the conversion mechanism, and the adjustment mechanism is provided with a locking mechanism; The conversion mechanism includes a horizontal adjustment part disposed on the upper side of the base plate for left and right movement adjustment. The horizontal adjustment part is provided with a docking positioning part. The docking positioning part is provided with an adjustment limiting part that adapts to the stable positioning and precise docking requirements of various cross-sectional shapes of steel such as H-beams, U-beams, square tubes and angle steel through structural conversion adjustment, and a support and reinforcement part that supports and reinforces the adjustment limiting part. The adjustment limiting part is provided with a locking part that cooperates with the docking positioning part to stably lock the adjustment limiting part. The adjustment mechanism includes a lifting adjustment part disposed on the upper side of the base plate and used for vertical movement adjustment, and the lifting adjustment part is provided with an adjustment drive part. The locking mechanism includes a driven adjustment part that is mounted on the adjustment drive part and moves left and right in coordination with the adjustment drive part. The driven adjustment part is provided with a butt locking part that is adapted to lock various cross-sectional shapes of steel such as H-beams, U-beams, square tubes and angle steel in coordination with the adjustment limit part.

2. The welding fixture for building construction according to claim 1, characterized in that: The lateral adjustment unit includes guide rails symmetrically fixed on the upper side of the base plate, and electric sliders that move left and right symmetrically are slidably arranged on the guide rails. A moving platform is fixedly arranged on the upper side of the symmetrical electric sliders.

3. The welding fixture for building construction according to claim 2, characterized in that: The docking positioning part includes a positioning seat symmetrically fixed on the upper side of the moving platform. The positioning seat has a through-rotating groove. The positioning seat has a first through-rotating positioning groove on the lower side of the rotating groove and on the side near the center of the guide rail. The positioning seat has a second through-rotating positioning groove symmetrically on the upper side of the rotating groove.

4. The welding fixture for building construction according to claim 3, characterized in that: The adjusting and limiting part includes an L-shaped limiting platform rotatably disposed between two positioning seats. The L-shaped limiting platform has symmetrically fixed rotating shafts on its front and rear sides that are rotatably connected to the corresponding rotating slots. A knob is fixedly disposed on the side of the rotating shaft away from the L-shaped limiting platform. The horizontal and vertical sections of the L-shaped limiting platform are symmetrically provided with threaded grooves that mate with positioning slot one and positioning slot two.

5. The welding fixture for building construction according to claim 4, characterized in that: The locking part includes a stud with an internal threaded connection in the threaded groove. A pin is fixedly provided on the side of the stud near the corresponding positioning seat, which is engaged with positioning groove one and positioning groove two. A hexagonal head is fixedly provided on the side of the pin away from the stud, which is used to assemble with an external hexagonal wrench.

6. The welding fixture for building construction according to claim 2, characterized in that: The support and reinforcement part includes a cylinder 1 fixedly installed on the lower side of the moving platform. The telescopic end of the cylinder 1 is fixedly equipped with a reinforcement platform that moves up and down. The lower side of the reinforcement platform is symmetrically equipped with guide rods 1 that are slidably connected to the moving platform. The opposite sides of the two reinforcement platforms are both inclined surfaces.

7. The welding fixture for building construction according to claim 1, characterized in that: The lifting adjustment unit includes a fixed platform fixedly mounted on the upper side of the base plate by multiple support columns. Cylinder 2 is symmetrically fixedly mounted on the upper side of the fixed platform. A U-shaped lifting platform that moves up and down is fixedly mounted on the telescopic end of cylinder 2. Guide rod 2 that slides and is symmetrically fixedly mounted on the upper side of the U-shaped lifting platform.

8. The welding fixture for building construction according to claim 7, characterized in that: The adjustment drive unit includes a motor fixedly installed on the right side of the U-shaped lifting platform. The drive end of the motor is fixedly equipped with a bidirectional screw that is rotatably connected to the U-shaped lifting platform. Guide rods three are symmetrically fixedly installed on the inner side of the U-shaped lifting platform and on the front and rear sides of the bidirectional screw.

9. A welding fixture for building construction according to claim 8, characterized in that: The driven adjustment part includes slide blocks that are symmetrically slidably mounted on the guide rod three and can move left and right. An adjustment plate is fixedly mounted on the lower side of the front and rear symmetrical slide blocks. A threaded seat that is threadedly connected to the corresponding bidirectional screw is fixedly mounted on the upper side of the adjustment plate and located between the two slide blocks.

10. A welding fixture for building construction according to claim 9, characterized in that: The docking locking part includes a locking block fixedly installed on the lower side of the adjusting plate. The lower end of the locking block has symmetrical inclined surfaces for locking the angle steel, and the lower side of the locking block has a V-shaped groove that runs through the front and back and locks the square tube.

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