Welding device for assembling steel structure I-beam

Abstract

This invention relates to the field of building engineering technology, and in particular to a welding device for assembling steel I-beams; it includes a support plate and a handle fixedly mounted thereon; a fixing mechanism is provided on the support plate; the invention uses a driving part to cause the extrusion plate to clamp the side of the I-beam and align the support plate, a strong magnetic base to adsorb and fix the entire device, and a pushing part to adjust the ceramic plate so that the end face of the conductive block fits tightly against the bevel; the arc initiation and arc termination of welding are both performed on the conductive block; after welding, the pushing part is retracted so that the conductive block remains on the I-beam due to fusion; the ceramic plate can be directly removed for reuse, and the residual conductive block only needs to be cut off; thus, while avoiding the damage to the I-beam caused by spot welding and flame cutting, it realizes the recycling of the ceramic plate and the small-volume removal of the conductive block, effectively reducing the cost of consumables and the risk of damage to the I-beams in building engineering.

Description

Technical Field

[0001] This invention relates to the field of building engineering technology, and in particular to a welding device for assembling steel I-beams. Background Technology

[0002] Steel I-beams are among the most common assembled components in building construction. During the on-site assembly and welding of steel I-beams, the use of arc-starting plates is a common practice to ensure the quality of the ends of major load-bearing welds, such as butt welds. The function of the arc-starting plate is to: ignite the arc at one end when starting the arc, preventing incomplete fusion, porosity, or cracks on the I-beam; and extinguish the arc at the other end when ending the arc, transferring defects such as craters and shrinkage cavities to the arc-starting plate, ensuring that both ends of the main weld are defect-free.

[0003] The arc-starting plate is usually fixed to the end of the I-beam by spot welding, and it should be consistent with the weld of the I-beam. After welding, the arc-starting plate must be removed. The common removal method is flame cutting with a small amount of slack left, and then grinding it with an angle grinder until it is flush with the I-beam. Hammering is strictly prohibited. The reason why it must be removed is that the arc-starting and arc-ending defects are concentrated on the arc-starting plate. If it is left, it will form a stress concentration point, which is prone to fatigue cracks under dynamic loads, threatening the structural safety of the building project.

[0004] However, the following problems exist in the current welding process of I-beams in building construction: the arc-starting plate uses the same steel material as the I-beam. During welding, the weld pool naturally transitions from the arc-starting plate to the I-beam, causing the arc-starting plate and the I-beam to fuse together as a single unit at the weld end. There is no separable interface between the two. Therefore, after welding, the arc-starting plate cannot be directly removed. It must be cut off from the I-beam using flame cutting, and the cut surface must be ground and finished. Because the arc-starting plate and the I-beam are fused together, the cutting position must be close to the main weld area of ​​the I-beam. At the end face, the high-temperature heat-affected zone generated by flame cutting directly acts on the stress-bearing parts of the I-beam, changing its surface metallographic structure and causing local hardening or softening. Subsequent grinding operations further remove material, easily forming notches, steps, or irregular contours on the surface of the I-beam. Under the combined effect of these damages, obvious stress concentration points will be formed at the end of the main weld, which are very easy to induce fatigue cracks under dynamic or alternating loads, seriously threatening the structural safety of building projects. In addition, the entire steel arc-starting plate is completely cut off and scrapped after each use, resulting in high material costs and waste of resources.

[0005] Therefore, the removal of the arc-starting plate is complicated and easily damages the I-beam due to its integral fusion with the I-beam. At the same time, the entire arc-starting plate is scrapped, resulting in high costs and material waste. This is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0006] The present invention aims to overcome the above-mentioned shortcomings of the prior art and provide a welding device for assembling steel structure I-beams.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a welding device for assembling steel I-beams, comprising a support plate and a handle fixedly mounted thereon; a fixing mechanism is provided on the support plate; The fixing mechanism includes a strong magnetic base fixedly installed at the lower end of the support plate. Two extrusion plates are slidably installed at the lower end of the support plate. Movable plates are movably arranged at the opposite ends of the two extrusion plates. Two fixed rods are fixedly installed on the movable plates. Magnetic seats are fixedly installed on the opposite faces of the two fixed rods that are directly opposite each other. An arc-inducing component is arranged on the two magnetic seats that are directly opposite each other. The arc-starting component includes a ceramic plate, which is mounted on a magnetic base by magnetic adsorption. Two mounting slots are formed on the ceramic plate, and conductive blocks are installed in the mounting slots. The support plate is also provided with a driving part and a pushing part; the driving part is used to drive the extrusion plate to move, and the pushing part is used to adjust the position of the arc-starting assembly.

[0008] As a preferred embodiment, two sliding columns are fixedly installed on the upper end of the extrusion plate, and a sliding groove corresponding to each sliding column is provided on the support plate. After the two sliding columns on the same extrusion plate slide through the corresponding sliding groove, a slider is fixedly installed together.

[0009] As a preferred embodiment, the driving unit includes a T-shaped column disposed on a support plate. The vertical section of the T-shaped column slides through the support plate and the strong magnetic base. A tension spring is installed between the horizontal section of the T-shaped column and the support plate. Two connecting rods are hinged to the horizontal section of the T-shaped column, and the other end of the connecting rod is hinged to the corresponding slider.

[0010] As a preferred embodiment, two support rods are slidably installed on the left side of the support plate, and a fixed plate is fixedly installed on the left end of the support rods. A slide block corresponding to the movable plate is fixedly installed on the lower end of the fixed plate, and two slide rods are fixedly installed on the lower end of the slide block. A circular groove corresponding to the slide rods is opened on the upper end of the movable plate.

[0011] As a preferred embodiment, the pushing part includes a rotating shaft, and the two opposite ends of the extrusion plates are rotatably mounted with the rotating shaft. A drive rod is fixedly mounted on the rotating shaft, and the other end of the drive rod is hinged to the moving plate.

[0012] As a preferred embodiment, a spur gear is fixedly installed on the rotating shaft, a rack meshes with the spur gear, and a connecting plate is fixedly installed after the upper end of the rack slides through the support plate. An adjusting component is provided on the support plate.

[0013] As a preferred embodiment, the adjusting component includes two limiting posts fixedly installed at the lower end of the connecting plate. The limiting posts slide through the support plate. An adjusting bolt is rotatably installed on the connecting plate. A threaded hole that engages with the threaded adjusting bolt is provided on the support plate. A knob is fixedly installed on the adjusting bolt.

[0014] As a preferred embodiment, a magnetic plate that is attracted and fixed to the magnetic seat is fixedly installed at the lower end of the ceramic plate.

[0015] As a preferred embodiment, the outer circumference of the knob is knurled.

[0016] As a preferred embodiment, the mounting groove and the conductive block are interference fit.

[0017] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: This invention uses a driving unit to clamp the side of the I-beam with an extrusion plate and align the support plate. A strong magnetic base adsorbs and fixes the entire device. The pushing unit adjusts the ceramic plate to ensure that the end face of the conductive block fits tightly against the bevel. The arc initiation and termination of welding are both performed on the conductive block. After welding, the pushing unit retracts, leaving the conductive block as a fusion residue on the I-beam. The ceramic plate can be directly removed for reuse, and the residual conductive block only needs to be cut off. This avoids the damage to the I-beam caused by spot welding and flame cutting, while realizing the recycling of the ceramic plate and the small-volume removal of the conductive block, effectively reducing material costs and the risk of damage to the I-beam structure in building construction.

[0018] This invention utilizes the non-adhesive properties of the ceramic plate and the weld metal, combined with the structural design that allows the conductive block to remain naturally when the pushing part retracts and the ceramic plate to detach smoothly. This allows the ceramic plate to be directly removed without adhesion after welding, restoring it to its intact state without any hammering or flame cutting. Furthermore, it can be repeatedly adsorbed onto the magnetic base for subsequent welds, significantly reducing the waste of arc-starting material.

[0019] The conductive block of this invention only partially contacts and fuses with the bevel end face of the I-beam. Although the conductive block is firmly adhered to the end of the weld after welding, its volume is small and it is located at the edge of the end of the I-beam. It can be removed from the I-beam by conventional cutting methods. The cutting position is far away from the main stress area of ​​the I-beam. After simple grinding with an angle grinder, the end face of the I-beam can be flush with the weld. This avoids the serious damage and stress concentration problems of the heat-affected zone to the I-beam when cutting a whole arc-starting plate in traditional construction engineering.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 2 This is a schematic diagram of the drive unit of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the adjusting component of the present invention.

[0025] Figure 4 This is a schematic diagram of the pushing part of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure between the ceramic plate and the conductive block of the present invention.

[0027] Reference numerals: 10, Support plate; 11, Handle; 2, Fixing mechanism; 20, Strong magnetic base; 21, Extrusion plate; 210, Sliding column; 211, Sliding block; 22, Moving plate; 220, Support rod; 221, Fixing plate; 222, Sliding seat; 223, Sliding rod; 23, Fixing rod; 24, Magnetic seat; 3, Arc-initiating assembly; 30, Ceramic plate; 300, Magnetic plate; 31, Mounting groove; 32, Conductive block; 4, Drive unit; 40, T-shaped column; 41, Tension spring; 42, Connecting rod; 5, Pushing part; 50, Rotating shaft; 51, Drive rod; 52, Spur gear; 53, Rack; 54, Connecting plate; 6, Adjusting component; 60, Limiting column; 61, Adjusting bolt; 62, Knob. Detailed Implementation

[0028] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] like Figure 1 and Figure 2 As shown, a welding device for assembling steel I-beams includes a support plate 10 and a handle 11 fixedly installed thereon; a fixing mechanism 2 is provided on the support plate 10.

[0030] For ease of description, using Figure 1 The direction of the coordinate arrow is defined as forward, right, and up, and the opposite direction is backward, left, and down.

[0031] like Figure 1 , Figure 2 and Figure 3 As shown, the fixing mechanism 2 includes a strong magnetic base 20 fixedly installed at the lower end of the support plate 10. The strong magnetic base 20 adopts a mechanical permanent magnet structure, which has a rotatable permanent magnet and a magnetic circuit switching mechanism inside, and a control knob (not shown in the figure) on the outside. By rotating the control knob, the position or magnetic pole direction of the permanent magnet can be changed, thereby controlling the on / off of the magnetic circuit. When the control knob is turned to the magnetic on position, the magnetic lines of force of the permanent magnet form a closed loop through the working surface of the strong magnetic base 20, generating an attraction force; when the control knob is turned to the magnetic off position, the magnetic lines of force short-circuit themselves inside the strong magnetic base 20, the magnetic field on the working surface disappears, and the attraction force is released; the lower end of the support plate 10 Two extrusion plates 21 are slidably installed. Movable plates 22 are movably installed at opposite ends of the two extrusion plates 21. Two fixed rods 23 are fixedly installed on the movable plates 22. Magnetic seats 24 are fixedly installed on the opposite surfaces of the two front-to-back fixed rods 23. The magnetic seats 24 also adopt a mechanical permanent magnet structure. Each magnetic seat 24 has an independent control knob (not shown in the figure) on its outside, which is used to control the opening and closing of its magnetic circuit. When the magnet is turned on, the working surface of the magnetic seat 24 generates an adsorption force; when the magnet is turned off, the adsorption force is released. An arc-inducing component 3 is jointly provided on the two front-to-back magnetic seats 24. A pushing part 5 and a driving part 4 are provided on the support plate 10.

[0032] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the arc-starting assembly 3 includes a ceramic plate 30 that is magnetically attached to a magnetic base 24. Two mounting slots 31 are formed on the ceramic plate 30, and conductive blocks 32 are installed in the mounting slots 31.

[0033] like Figure 4 and Figure 5 As shown, a magnetic plate 300 that is attracted and fixed to the magnetic seat 24 is fixedly installed at the lower end of the ceramic plate 30.

[0034] like Figure 5 As shown, the mounting groove 31 and the conductive block 32 are interference fit.

[0035] like Figures 1 to 5As shown, in specific work, the assembly and bolting of the I-beams and columns in the building project are carried out first. The I-beams are hoisted to the designed positions of the columns, aligning the end flanges of the I-beams with the predetermined connection surfaces of the column bodies. The bolt holes on the steel plates of the columns are aligned with the bolt holes on the web of the I-beams. The operators first insert a small number of high-strength bolts and apply an initial tightening torque, which is about half of the design final tightening torque. The purpose of these small number of bolts is to temporarily fix the I-beams in the designed positions, establishing a precise reference for the free insertion of all subsequent bolts. After the initial tightening of the positioning bolts is completed, the remaining high-strength bolts can be smoothly inserted into their respective bolt holes. Throughout the process, it is strictly forbidden to use hammers or strong pry bars to force the bolts in. After all the bolts are inserted, all the high-strength bolts are finally tightened in a symmetrical order from the center of the bolt group outwards, until the designed final tightening torque value is reached. At this point, the bolted parts of the bolted-welded hybrid connection node are completely tightened, and the welding process can be carried out independently.

[0036] After the bolts are tightened, preparations for the butt weld are made. Before welding, the operator moves the entire device to the predetermined welding end position of the I-beam flange by holding the handle 11. First, the support plate 10 is moved down and attached to the upper surface of the I-beam. During the downward movement, the downward movement of the support plate 10 drives the drive unit 4, which in turn drives the two pressing plates 21 to move relative to each other. This causes the two pressing plates 21 to automatically adjust the distance between the two sets of magnetic seats 24 to a position that matches the width of the I-beam flange. At the same time, the support plate 10 is aligned as a whole. At this time, the operator manually controls the strong magnetic base 20 to be energized. The strong magnetic base 20 is firmly attached to the upper surface of the I-beam, thereby locking and maintaining the aligned state of the support plate 10 and preventing the device from shifting during the welding process.

[0037] After the support plate 10 is fixed, the operator removes the arc-starting assembly 3, which includes a ceramic plate 30. Two mounting slots 31 are formed on the ceramic plate 30, and a conductive block 32 is installed in each slot 31 via an interference fit. The interference fit is designed to ensure that during welding, the conductive block 32 maintains a firm connection with the ceramic plate 30, preventing loosening or displacement, thus ensuring the positional accuracy and arc stability of arc initiation and termination. Simultaneously, the interference fit also ensures that the conductive block 32 does not require additional screws or adhesives after being pressed into the ceramic plate 30, simplifying the assembly and construction process. The operator places the ceramic plate 30 on two opposing magnetic... On seat 24, a fan-shaped weld hole has been opened at the predetermined welding end position of the I-beam flange according to the process requirements. The weld hole passes through the web of the I-beam. When placed, the ceramic plate 30 and the conductive block 32 pass through the weld hole in the web of the I-beam. Since a magnetic plate 300 is fixedly installed at the lower end of the ceramic plate 30, the magnetic seat 24 is magnetically activated by manual control. The magnetic seat 24 then firmly attracts the magnetic plate 300, thereby fixing the entire arc-starting assembly 3 at the predetermined welding position. Subsequently, the operator finely adjusts the position of the ceramic plate 30 through the pushing part 5 so that the conductive block 32 at the end of the ceramic plate 30 is closely attached to the bevel end face of the I-beam flange and the end face of the beam column, ensuring that the conductive block 32 only contacts the I-beam locally with its end face.

[0038] At the start of the welding operation, the welder guides the welding torch to the conductive block 32 at one end of the arc ignition assembly 3, and stably ignites the arc on the conductive block 32. After the arc stabilizes, it is moved to the bevel of the I-beam flange for formal welding. Because the conductive block 32 has good conductivity and fits tightly against the end face of the I-beam, the arc ignition process is stable with very little spatter. When welding reaches the end, the arc is moved to the conductive block 32 at the other end to extinguish the arc, so that all welding defects such as arc craters and porosity generated during arc ignition and arc termination are concentrated on the conductive block 32, and the two ends of the main weld remain intact and defect-free.

[0039] After welding, the entire device is moved away from the I-beam and column by the pushing part 5. During the movement, since the conductive block 32 has been metallurgically fused with the I-beam during welding and is firmly bonded to the end of the weld, and the ceramic plate 30 and the conductive block 32 are in an interference fit, when the entire device is pulled back, the conductive block 32 is subjected to the pulling force of the I-beam, which can overcome the friction of the interference fit and naturally detach from the mounting groove 31 of the ceramic plate 30, thereby automatically separating the conductive block 32 from the ceramic plate 30. Then, the operator demagnetizes the magnetic base 24 and directly removes the ceramic plate 30 from the magnetic base 24. Since the ceramic plate 30 and the weld metal are not physically and chemically bonded, the surface of the ceramic plate 30 is smooth and free of adhering substances, and remains intact. The operator manually controls the strong magnetic base 20 to demagnetize, releasing the entire device from the adsorption of the I-beam, and moves the device to the next weld position to begin the welding preparation work for the next weld.

[0040] For the conductive blocks 32 that remain and adhere to the weld end, the operator will use flame cutting or plasma cutting to remove them from the I-beam. Since the conductive blocks 32 are small and the cutting position is far away from the main stress area of ​​the I-beam, the damage to the I-beam is minimal. After cutting, the residual protrusions are finely ground with an angle grinder so that the end face of the I-beam is flush with the weld end. The removed conductive blocks 32 can be collected and melted into new conductive blocks 32. The removed ceramic plate 30 can be cleaned and reinstalled on the magnetic base 24, and new conductive blocks 32 can be pressed in to form a new arc-starting assembly 3, realizing the reuse of the ceramic plate 30.

[0041] Furthermore, considering that this device needs to be used extensively for high-altitude operations at construction sites, and to facilitate one-handed operation and movement during high-altitude work, reducing operator hand fatigue and the risk of accidental device falls, this device can be lightweighted while ensuring structural strength. Specifically, the main load-bearing components such as the support plate 10, extrusion plate 21, and moving plate 22 are made of aluminum alloy, while the handle 11 and non-load-bearing support components are made of engineering plastic injection molding. While meeting functional requirements, each component minimizes its wall thickness or is designed with a hollow structure. After lightweighting, the weight of the entire device is controlled within a range that ordinary workers can easily operate with one hand. This makes it easier and safer for operators to move, align, and disassemble the device at heights, thereby effectively improving the efficiency and safety of construction site work.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, two sliding columns 210 are fixedly installed on the upper end of the extrusion plate 21. The support plate 10 has a sliding groove corresponding to the sliding column 210. The two sliding columns 210 on the same extrusion plate 21 slide through the corresponding sliding groove and are fixedly installed together with the slider 211.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the driving unit 4 includes a T-shaped column 40 disposed on the support plate 10. The vertical section of the T-shaped column 40 slides through the support plate 10 and the strong magnetic base 20. A tension spring 41 is installed between the horizontal section of the T-shaped column 40 and the support plate 10. Two connecting rods 42 are hinged to the horizontal section of the T-shaped column 40. The other end of the connecting rod 42 is hinged to the corresponding slider 211.

[0044] like Figures 1 to 3As shown, during actual operation, the operator holds handle 11 and moves the entire device above the I-beam, so that the support plate 10 is roughly aligned with the upper surface of the I-beam. Then, the support plate 10 is moved downward. During the downward movement of the support plate 10, the strong magnetic base 20, which is fixedly installed at the lower end of the support plate 10, moves downward along with the support plate 10. The lower end of the vertical section of the T-shaped column 40 first contacts the upper surface of the I-beam. Since the lower end of the vertical section of the T-shaped column 40 is supported by the I-beam, as the support plate 10 continues to move downward, the T-shaped column 40 moves upward relative to the support plate 10. That is, the vertical section of the T-shaped column 40 slides upward, and the horizontal section of the T-shaped column 40 gradually moves away from the support plate 10. At the same time, the tension spring 41 installed between the horizontal section of the T-shaped column 40 and the support plate 10 is gradually stretched.

[0045] When the horizontal section of the T-shaped column 40 moves away from the support plate 10, the two connecting rods 42 hinged at both ends of the horizontal section of the T-shaped column 40 move accordingly. Each connecting rod 42 pulls the slider 211 hinged to it to slide towards the T-shaped column 40. The sliding of the slider 211 drives the two pressing plates 21 to move relative to each other along the lower end of the support plate 10 through the sliding column 210, that is, the two pressing plates 21 move closer to each other. As the support plate 10 continues to move downward, the T-shaped column 40 is further lifted, and the two pressing plates 21 continue to move relative to each other. When the two pressing plates 21 are pressed tightly against the sides of the I-beam from both sides, the support plate 10 is automatically aligned under the clamping action of the pressing plates 21, so that the support plate 10 is parallel to the upper surface of the I-beam. When the support plate 10 moves down to be completely in contact with the upper surface of the I-beam, the strong magnetic base 20 fixedly installed at the lower end of the support plate 10 is simultaneously in contact with the upper surface of the I-beam. At this time, the operator manually controls the strong magnetic base 20 to be magnetized, and the strong magnetic base 20 is firmly attached to the I-beam, locking the alignment state of the support plate 10.

[0046] The aforementioned drive unit 4 structure utilizes the contact between the lower end of the T-shaped column 40 and the I-beam during the downward movement of the support plate 10 to convert the downward force into the clamping action of the pressing plate 21. This achieves the linkage between the downward movement of the support plate 10 and the clamping of the I-beam by the pressing plate 21, eliminating the need for separate operation of the pressing plate 21. Simultaneously, the clamping action of the pressing plate 21 ensures that the support plate 10 is in a straight position before being attracted by the strong magnetic base 20, improving the positioning accuracy of the device. After welding, when the operator lifts the entire device upward through the pushing part 5, the support plate 10 moves upward relative to the I-beam, the lower end of the T-shaped column 40 loses the pushing force of the I-beam, the tension spring 41 contracts and resets, pulling the horizontal section of the T-shaped column 40 towards the support plate 10. Through the connecting rod 42, the slider 211 and the pressing plate 21 are pushed away from the T-shaped column 40, causing the two pressing plates 21 to release their clamping of the I-beam, providing a gap for the device to be removed from the I-beam.

[0047] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two support rods 220 are slidably installed on the left side of the support plate 10. A fixing plate 221 is fixedly installed on the left end of the support rods 220. A slide block 222 corresponding to the moving plate 22 is fixedly installed on the lower end of the fixing plate 221. Two slide rods 223 are fixedly installed on the lower end of the slide block 222. A circular groove corresponding to the slide rods 223 is opened on the upper end of the moving plate 22.

[0048] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the pushing part 5 includes a rotating shaft 50. The two extrusion plates 21 are rotatably mounted on opposite ends of the rotating shaft 50. A drive rod 51 is fixedly mounted on the rotating shaft 50. The other end of the drive rod 51 is hinged to the moving plate 22.

[0049] like Figure 3 and Figure 4 As shown, a spur gear 52 is fixedly installed on the rotating shaft 50, and a rack 53 meshes with the spur gear 52. The upper end of the rack 53 slides through the support plate 10 and is fixedly installed with a connecting plate 54. An adjusting component 6 is provided on the support plate 10.

[0050] like Figure 3 As shown, the adjusting component 6 includes two limiting posts 60 fixedly installed at the lower end of the connecting plate 54. The limiting posts 60 slide through the support plate 10. An adjusting bolt 61 is rotatably installed on the connecting plate 54. A screw hole that is threadedly engaged with the adjusting bolt 61 is opened on the support plate 10. A knob 62 is fixedly installed on the adjusting bolt 61.

[0051] like Figure 3 As shown, the outer circumference of the knob 62 is knurled.

[0052] like Figures 1 to 4As shown, during actual operation, after the strong magnetic base 20 attracts the I-beam and the extrusion plate 21 clamps both sides of the I-beam, the operator rotates the knob 62 to drive the adjusting bolt 61 to rotate. Since the adjusting bolt 61 is threadedly engaged with the screw hole on the support plate 10, and the adjusting bolt 61 is rotatably connected to the connecting plate 54, rotating the adjusting bolt 61 causes the connecting plate 54 to move axially along the adjusting bolt 61. The movement of the connecting plate 54 drives the two racks 53 to move up and down synchronously, while the limiting post 60 slides, ensuring that the connecting plate 54 moves smoothly without deflection. The up-and-down movement of the racks 53 drives the spur gear 52 meshing with them to rotate. The spur gear 52 is fixed on the rotating shaft 50, thus... The rotating shaft 50 is driven to rotate. When the rotating shaft 50 rotates, the drive rod 51 fixed on it swings accordingly. The other end of the drive rod 51 is hinged to the moving plate 22. Therefore, the swing of the drive rod 51 will push the moving plate 22 to move relative to the slide 222. After the moving plate 22 moves, the fixed rod 23 on it drives the magnetic seat 24 and the arc-starting assembly 3 adsorbed on the magnetic seat 24 to move as a whole, thereby precisely adjusting the degree of contact between the conductive block 32 at the end of the ceramic plate 30 and the bevel end face of the I-beam flange and the end face of the beam column. When the conductive block 32 is tightly attached to the end face of the I-beam, the knob 62 is stopped from rotating, and the position is maintained by the self-locking action of the adjusting bolt 61 and the screw hole.

[0053] The push part 5 and the adjusting part 6 structure realize the adjustment of the position of the ceramic plate 30, and the self-locking after adjustment ensures that the contact gap between the conductive block 32 and the I-beam always meets the requirements of the construction engineering specifications during the welding process. The knurling on the outer wall of the knob 62 makes it easy for the operator to apply force stably even when wearing gloves. When it is necessary to disassemble the device, rotate the knob 62 in the opposite direction to make the drive rod 51 swing in the opposite direction, so that the ceramic plate 30 can be pulled away from the end face of the I-beam.

[0054] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0055] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0056] 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 device for assembling steel I-beams, comprising a support plate and a handle fixedly mounted thereon, characterized in that: A fixing mechanism is provided on the support plate; The fixing mechanism includes a strong magnetic base fixedly installed at the lower end of the support plate, two extrusion plates slidably installed at the lower end of the support plate, a movable plate movably arranged at the opposite ends of the two extrusion plates, two fixed rods fixedly installed on the movable plate, magnetic seats fixedly installed on the opposite faces of the two fixed rods facing each other, and an arc-inducing component is commonly arranged on the two magnetic seats facing each other. The arc-starting component includes a ceramic plate, which is mounted on a magnetic base by magnetic adsorption. Two mounting slots are formed on the ceramic plate, and conductive blocks are installed in the mounting slots. The support plate is also provided with a driving part and a pushing part; the driving part is used to drive the extrusion plate to move, and the pushing part is used to adjust the position of the arc-starting assembly.

2. The welding device for assembling steel I-beams according to claim 1, characterized in that: Two sliding columns are fixedly installed at the upper end of the extrusion plate. The support plate has a sliding groove corresponding to each sliding column. The two sliding columns on the same extrusion plate slide through the corresponding sliding groove and are then fixedly installed with a slider.

3. The welding device for assembling steel I-beams according to claim 2, characterized in that: The drive unit includes a T-shaped column mounted on a support plate. The vertical section of the T-shaped column slides through the support plate and the strong magnetic base. A tension spring is installed between the horizontal section of the T-shaped column and the support plate. Two connecting rods are hinged to the horizontal section of the T-shaped column, and the other end of the connecting rods is hinged to the corresponding slider.

4. The welding device for assembling steel I-beams according to claim 1, characterized in that: Two support rods are slidably installed on the left side of the support plate. A fixed plate is fixedly installed on the left end of the support rods. A slide block corresponding to the movable plate is fixedly installed on the lower end of the fixed plate. Two slide rods are fixedly installed on the lower end of the slide block. A circular groove corresponding to the slide rods is opened on the upper end of the movable plate.

5. The welding device for assembling steel I-beams according to claim 1, characterized in that: The pushing part includes a rotating shaft, and the two extrusion plates are rotatably mounted on opposite ends of the rotating shaft. A drive rod is fixedly mounted on the rotating shaft, and the other end of the drive rod is hinged to the moving plate.

6. The welding device for assembling steel I-beams according to claim 5, characterized in that: A spur gear is fixedly installed on the rotating shaft, and a rack meshes with the spur gear. The upper end of the rack slides through the support plate and is fixedly installed with a connecting plate. An adjusting component is provided on the support plate.

7. The welding device for assembling steel I-beams according to claim 6, characterized in that: The adjusting component includes two limiting posts fixedly installed at the lower end of the connecting plate. The limiting posts slide through the support plate. An adjusting bolt is rotatably installed on the connecting plate. A threaded hole that mates with the threaded adjusting bolt is opened on the support plate. A knob is fixedly installed on the adjusting bolt.

8. The welding device for assembling steel I-beams according to claim 1, characterized in that: A magnetic plate is fixedly installed at the lower end of the ceramic plate and is attracted and fixed to the magnetic seat.

9. A welding device for assembling steel I-beams according to claim 7, characterized in that: The outer circumference of the knob is knurled.

10. A welding device for assembling steel I-beams according to claim 1, characterized in that: The mounting groove and the conductive block are interference fit.

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