Magnetic control type opening rib group welding auxiliary device

Abstract

This utility model relates to a magnetically controlled welding auxiliary device for open ribs, belonging to the field of steel box girder manufacturing. The technical solution includes a triangular three-dimensional support, a universal ball bearing base, and a controllable magnetic base. The controllable magnetic base can control the on / off state of the magnetic force via a toggle switch, and can attract the open ribs using magnetic force. The side of the support has elongated holes arranged along the height direction, with each controllable magnetic base corresponding to one elongated hole. The controllable magnetic base is connected to the elongated hole via a first bolt, and its height can be adjusted. In this configuration, the relative position of the open rib and the panel can be freely adjusted, ensuring the perpendicularity of the open rib and the panel. Simultaneously, it prevents the open rib from tipping over during welding to the panel, eliminating the need for tooling plates for welding fixation, avoiding potential damage to the steel box girder structure during welding, and saving the need for post-weld repair work such as grinding, re-welding, NDT testing, and painting, thus reducing process and time costs.

Description

Technical Field

[0001] This utility model relates to the field of steel box girder manufacturing technology, and in particular to a magnetically controlled open rib welding auxiliary device. Background Technology

[0002] In the field of transportation infrastructure construction, steel box girders are widely used as an efficient and economical structural form. The design and manufacturing process of their stiffening rib system directly affects the overall performance of the bridge. Stiffening ribs for steel box girders are mainly divided into two categories: open stiffening ribs and closed stiffening ribs. Among them, open stiffening ribs occupy an important position due to their simple structure and convenient processing, specifically including plate ribs, spherical flattened ribs, L-shaped ribs, and inverted T-shaped ribs. Plate ribs, as the most widely used type of open stiffening rib, are not only suitable for local stiffening of major load-bearing parts such as bridge decks, bottom plates, and webs, but can also serve as supporting stiffening ribs to undertake the task of transferring concentrated loads. Their versatility and economy make them the preferred solution in steel box girder manufacturing. However, the manufacturing process of this type of stiffening rib involves complex positioning and welding processes, and traditional techniques have significant limitations in ensuring accuracy and stability.

[0003] In traditional manufacturing processes, single-piece anti-groove stiffeners are commonly used for positioning and welding stiffeners in steel box girders, as well as for controlling welding deformation. These stiffeners are temporarily fixed to the base material surface by welding, utilizing their rigidity to offset the shrinkage stress generated during welding, thus achieving precise assembly of the components. However, this process has fundamental flaws: the high temperatures generated during stiffener welding lead to localized thermal stress concentration in the base material, resulting in microcracks and structural damage; subsequent cutting and removal of the stiffeners further exacerbates mechanical damage to the base material surface, leaving irreparable marks on the component surface, affecting the bridge's appearance, and becoming a weak point for fatigue crack initiation under long-term loads. Studies show that base material damage significantly reduces the fatigue resistance of steel box girders, shortening the structure's lifespan under cyclic loading by 30%-50%. Furthermore, the repeated welding and removal of stiffeners in traditional processes is cumbersome, leading to low construction efficiency and failing to meet the large-scale production requirements of modern large-scale bridge projects. Therefore, overcoming the technical bottleneck of base material damage in traditional manufacturing processes has become a key issue for improving the service performance of steel box girders and promoting technological advancements in bridge engineering. Summary of the Invention

[0004] The purpose of this invention is to provide a magnetically controlled open rib welding auxiliary device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A magnetically controlled open rib welding auxiliary device includes:

[0007] The support structure is triangular in shape.

[0008] At least four omnidirectional ball bearing bases, spaced apart on the bottom surface of the bracket, are used to allow the bracket to slide freely on the panel; and

[0009] Controllable magnetic bases, at least four of which are spaced apart on the side of the bracket, can control the on / off state of the magnetic force by turning a switch, and can attract the open ribs by magnetic force.

[0010] The bracket has elongated holes along its height on its side. Each controllable magnetic base corresponds to one elongated hole. The controllable magnetic base is connected to the elongated hole by a first bolt and its height can be adjusted.

[0011] In one possible implementation, the omnidirectional ball bearing base includes: a base and a plurality of omnidirectional balls mounted on the base, the base being connected to the bottom of the bracket by a second bolt.

[0012] In one possible implementation, there are four universal ball bearing bases, each of which has four universal balls.

[0013] In one possible implementation, the allowable deviation of the flatness of the bottom surface of the bracket is less than 1 mm, and the height difference between the universal balls of all the universal ball bearing bases is less than 1 mm.

[0014] In one possible implementation, the planar error between the magnetic surfaces of all the controllable magnetic bases is less than 1 mm.

[0015] In one possible implementation, the verticality deviation between the bottom surface and the side surface of the bracket is less than 1 mm.

[0016] In one possible implementation, there are six controllable magnetic bases, respectively distributed on the upper, middle and lower parts of the side of the support.

[0017] In one possible implementation, the support is welded from channel steel.

[0018] The beneficial effects of the technical solution provided by this utility model include at least the following:

[0019] This technical solution includes a triangular three-dimensional bracket, a universal ball bearing base, and a controllable magnetic base. The controllable magnetic base can control the on / off state of the magnetic force by turning a switch, and can attract the opening ribs through magnetic force. The side of the bracket has elongated holes arranged along the height direction, with each controllable magnetic base corresponding to one elongated hole. The controllable magnetic base is connected to the elongated hole by a first bolt, and its height can be adjusted. In this configuration, the relative position of the opening ribs and the panel can be freely adjusted, ensuring the perpendicularity of the opening ribs and the panel. At the same time, it can prevent the opening ribs from tipping over during the welding process with the panel, eliminating the need for tooling plates for welding and fixing, avoiding potential damage to the steel box girder structure during welding, and saving the repair work that may be required after welding, such as grinding, re-welding, NDT inspection, and painting, thus reducing process and time costs. Attached Figure Description

[0020] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0021] Figure 1 This diagram illustrates the assembly of a magnetically controlled open rib welding auxiliary device provided in an exemplary embodiment of the present invention during the welding process between the open rib and the panel.

[0022] Figure 2 A schematic diagram of the front axle side of a magnetically controlled open rib welding auxiliary device provided in an exemplary embodiment of the present invention is shown.

[0023] Figure 3 A rear axle side schematic diagram of a magnetically controlled open rib welding auxiliary device provided in an exemplary embodiment of the present invention is shown.

[0024] In the diagram: 1. Bracket; 11. Long slotted hole; 12. First bolt; 2. Universal ball bearing base; 21. Base; 22. Universal ball bearing; 23. Second bolt; 3. Controllable magnetic base; 31. Torque switch; 32. Magnetic surface; 4. Panel; 5. Opening rib. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In this specification, identical components are represented by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings of this utility model, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions towards or away from a specific component, respectively. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Figure 1 This diagram illustrates the assembly of a magnetically controlled open rib welding auxiliary device provided in an exemplary embodiment of the present invention during the welding process between the open rib and the panel. Figure 2 This diagram shows a front axle side view of a magnetically controlled open rib welding auxiliary device provided in an exemplary embodiment of the present invention. The magnetically controlled open rib welding auxiliary device includes: a bracket 1, which is triangular in shape; at least four universal ball bearing bases 2, which are spaced apart on the bottom surface of the bracket 1, for allowing the bracket 1 to slide freely on the panel 4; and at least four controllable magnetic seats 3, which are spaced apart on the side surface of the bracket 1, which can control the on / off state of the magnetic force by turning a switch 31, and can attract the open rib 5 through the magnetic surface 32; wherein, the side surface of the bracket 1 has an elongated hole 11 arranged along the height direction, each controllable magnetic seat 3 corresponds to one elongated hole 11, and the controllable magnetic seat 3 is connected to the elongated hole 11 by a first bolt 12 and its height can be adjusted.

[0029] In this embodiment, a triangular three-dimensional bracket provides rigid support, utilizing structural stability to prevent the device from tipping over during welding. At least four omnidirectional ball bearing bases are spaced apart on the bottom surface, allowing the bracket to slide freely on the panel via ball rolling, facilitating flexible adjustment of the relative position of the opening ribs and the panel, thus improving welding positioning efficiency. The controllable magnetic base controls the magnetic force through a switch, eliminating the need for welding when adsorbing the opening ribs, avoiding damage to the base material, and the at least four spaced arrangement ensures even force distribution. The elongated side hole cooperates with the first bolt, allowing the controllable magnetic base to be adjusted along the height direction, adapting to opening ribs of different heights and enhancing the device's versatility. The entire structure achieves precise positioning and efficient welding through the synergy of mechanical adjustment and magnetic adsorption.

[0030] In detail, Figure 3The diagram shows a rear axle side view of a magnetically controlled open rib welding auxiliary device provided in an exemplary embodiment of the present invention. The universal ball bearing base 2 includes a base 21 and a plurality of universal balls 22 mounted on the base 21. The base 21 is connected to the bottom of the bracket 1 by a second bolt 23.

[0031] In this embodiment, the base of the universal ball bearing base is detachably connected to the bottom of the bracket by a second bolt, which facilitates installation, debugging and reuse; the multiple universal balls on it can rotate freely 360°, making the bracket move flexibly and smoothly on the panel, accurately adjusting the welding position of the open ribs, reducing manual pushing and pulling resistance, improving positioning efficiency, and ensuring the device is stable and does not shake during the welding process by fixing with bolts.

[0032] In one example, there are four universal ball bearing bases 2, each with four universal balls 22.

[0033] In one example, the controllable magnetic base 3 consists of six switchable 8T permanent magnet bases, which are distributed on the upper, middle and lower parts of the side of the bracket 1. When adapting to the opening ribs 5 of different heights, the controllable magnetic bases 3 of the upper, middle and lower parts can be selectively combined.

[0034] In one example, bracket 1 is welded from 6.5# channel steel.

[0035] It is worth mentioning that the allowable deviation of the flatness of the bottom surface of bracket 1 is less than 1mm, and the height difference between the universal balls 22 of all universal ball bearing bases 2 is less than 1mm. The flatness error between the magnetic surfaces 32 of all controllable magnetic bases 3 is less than 1mm. The perpendicularity deviation between the bottom surface and the side surface of bracket 1 is less than 1mm.

[0036] In this embodiment, the flatness of the bracket bottom surface, the height difference of the universal ball bearings, the plane error of the magnetic surface of the magnetic seat, and the deviation of the verticality between the bottom surface and the side surface are all controlled within 1mm. This ensures that the bracket is installed stably, the ball bearings slide smoothly under synchronous force, the magnetic seat adheres tightly to the open rib and the force is uniform when adsorbing the open rib, and at the same time ensures the perpendicularity of the open rib to the panel, avoiding positioning offset or structural tilting due to dimensional deviation, improving the welding accuracy and stability, reducing manual adjustment costs, and ensuring the welding quality of the steel box girder.

[0037] Next, the working principle of a magnetically controlled open rib welding auxiliary device involved in the embodiments of this utility model will be explained.

[0038] First, place the magnetically controlled open rib welding auxiliary device on the panel 4, and pre-fix the controllable magnetic base 3 to the top of the long waist hole 11 on the side of the bracket 1 with the first bolt 12 to ensure that the initial positioning height is consistent.

[0039] Next, align and attach the opening rib 5 to the magnetic surface 32 of the controllable magnetic base 3, and simultaneously turn on the magnetic force by turning the switch 31, using the magnetic force to stably fix the opening rib 5 to the magnetic surface 32.

[0040] Next, push the bracket 1, and relying on the flexible sliding characteristics of the universal ball bearing base 2, precisely move the opening rib 5 to the welding area of ​​the panel 4.

[0041] Finally, loosen the first bolt 12 so that the controllable magnetic seat 3 moves vertically downward along the long slot 11 under the gravity of the open rib 5 until the bottom surface of the open rib 5 is tightly attached to the panel 4. Then tighten the first bolt 12 to lock the position and form a rigid positioning support, so that the welding operation can be carried out.

[0042] In summary, this technical solution includes a triangular three-dimensional bracket, a universal ball bearing base, and a controllable magnetic base. The controllable magnetic base can control the on / off state of the magnetic force by turning a switch, and it can attract the opening ribs using magnetic force. The side of the bracket has elongated holes arranged along the height direction, with each controllable magnetic base corresponding to one elongated hole. The controllable magnetic base is connected to the elongated hole by a first bolt, and its height can be adjusted. In this configuration, the relative position of the opening ribs and the panel can be freely adjusted, ensuring the perpendicularity of the opening ribs and the panel. It also prevents the opening ribs from tipping over during the welding process with the panel, eliminating the need for tooling plates for welding fixation, avoiding potential damage to the steel box girder structure during welding, and eliminating the need for post-weld repair work such as grinding, re-welding, NDT inspection, and painting, thus reducing process and time costs.

[0043] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A magnetically controlled open rib welding auxiliary device, characterized in that, include: The support (1) is triangular in shape; Universal ball bearing bases (2), at least four of which are spaced apart on the bottom surface of the bracket (1), for allowing the bracket (1) to slide freely on the panel (4); and Controllable magnetic bases (3), at least four of which are spaced apart on the side of the support (1), can control the on / off of the magnetic force by turning the switch (31), and can attract the opening ribs (5) through the magnetic surface (32); The bracket (1) has an elongated hole (11) on its side along the height direction. Each controllable magnetic base (3) corresponds to one elongated hole (11). The controllable magnetic base (3) is connected to the elongated hole (11) by a first bolt (12) and its height can be adjusted.

2. The magnetically controlled open rib welding auxiliary device according to claim 1, characterized in that, The universal ball bearing base (2) includes: a base (21) and a plurality of universal balls (22) mounted on the base (21). The base (21) is connected to the bottom of the bracket (1) by a second bolt (23).

3. The magnetically controlled open rib welding auxiliary device according to claim 2, characterized in that, There are four universal ball bearing bases (2), and each universal ball bearing base (2) has four universal balls (22).

4. The magnetically controlled open rib welding auxiliary device according to claim 2, characterized in that, The allowable deviation of the flatness of the bottom surface of the bracket (1) is less than 1 mm, and the height difference between the universal balls (22) of all the universal ball bases (2) is less than 1 mm.

5. The magnetically controlled open rib welding auxiliary device according to claim 1, characterized in that, The planar error between the magnetic surfaces (32) of all the controllable magnetic bases (3) is less than 1 mm.

6. The magnetically controlled open rib welding auxiliary device according to claim 1, characterized in that, The verticality deviation between the bottom surface and the side surface of the bracket (1) is less than 1 mm.

7. The magnetically controlled open rib welding auxiliary device according to claim 1, characterized in that, There are six controllable magnetic bases (3), which are respectively distributed on the upper, middle and lower parts of the side of the support (1).

8. The magnetically controlled open rib welding auxiliary device according to claim 1, characterized in that, The bracket (1) is welded from channel steel.

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