A steel box girder butt joint welding error platform correction device

Abstract

This utility model relates to the field of correction device technology, specifically a correction device for misaligned butt welds of steel box girders. It includes an electromagnet body, with a U-shaped frame fixed to one side of the electromagnet body by bolts. The advantages of this utility model are: the electromagnet body is attracted to the surface of one of the steel plates to be butt welded; the position of the L-shaped bracket is adjusted by the adjusting plate in the adjusting frame, and the locking bolts are tightened for fixation; the hydraulic cylinder is activated, and its output end applies a thrust to the other steel plate, causing the lower side steel plate at the misalignment to rise and the higher side steel plate to fall; after correction, the electromagnet body is shut off to separate it from the steel plate, eliminating the need for cutting. The electromagnet body uses magnetic force to replace the traditional welding and installation of the L-shaped bracket, saving the pre-welding and post-cutting processes and avoiding material waste; it also eliminates the need for post-cutting weld spatter grinding, reducing damage to the base material, lowering process complexity and labor costs, and significantly improving the efficiency of misalignment correction.

Description

Technical Field

[0001] This utility model relates to the field of correction device technology, and in particular to a correction device for misaligned butt welds of steel box girders. Background Technology

[0002] The steel box girder butt weld misalignment correction device is a specialized piece of equipment used in bridge steel structure construction to correct vertical misalignment of the steel plate edges during the butt weld of steel box girder segments. It can be defined as: a device that adjusts the relative position of the steel plates at the butt weld of a steel box girder using mechanical force, bringing the misaligned steel plates to the same horizontal plane. Specifically, this device typically consists of a force-applying component, a positioning mechanism, and a support structure. It generates directional force through hydraulic, mechanical, or manual drive, acting directly on the misaligned steel plates to achieve lifting, pressing, or translation adjustment.

[0003] Currently, L-shaped clamps combined with jacks are commonly used in engineering projects to correct misalignments. While this achieves basic adjustment, it has significant drawbacks. This method requires welding L-shaped clamps to the steel plates at the misalignment point, then using jacks to apply force between the clamps to raise the lower side and lower the higher side. After adjustment, the clamps must be removed. The primary problem with this process is high material waste; the clamps are only temporary tools and are discarded after use. Secondly, removing the clamps leaves raised weld scars on the steel plate surface, requiring additional grinding, which not only increases process complexity but may also damage the base material, affecting the structural integrity of the steel plate. Furthermore, both welding and clamp removal require professional personnel and must be timed to allow for welding cooling, resulting in a slow adjustment process, especially when multiple sections are continuously joined, significantly increasing labor costs and project timelines. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a misalignment correction device for butt welding of steel box girders, so as to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a steel box girder butt welding misalignment correction device, comprising an electromagnet body, a U-shaped frame fixedly mounted on one side of the electromagnet body by bolts, two symmetrically arranged support frames fixedly connected to the left and right sides of the U-shaped frame respectively, a slider slidably connected to the inner wall of each support frame, a spring fixedly connected between the slider and the support frame, an extension plate fixedly connected to the side of each slider away from the U-shaped frame, a caster wheel fixedly connected to the bottom surface of the extension plate, two symmetrically arranged adjustment frames fixedly connected to the top surface of the electromagnet body, an adjustment plate slidably connected inside each adjustment frame, a locking bolt rotatably connected to the top of each adjustment frame, the screw parts of the two locking bolts being threadedly connected to the two adjustment plates respectively, an L-shaped code plate fixedly connected between the two adjustment plates, and a hydraulic cylinder fixedly mounted inside the L-shaped code plate by bolts.

[0007] Preferably, each of the above-mentioned schemes has a plurality of linearly arrayed threaded holes on its top surface, and the screw portions of the two locking bolts are threadedly connected to the two adjusting plates respectively through the threaded holes.

[0008] Preferably, in any of the above solutions, the inner wall of the U-shaped frame is fixedly connected with two symmetrically arranged clamping plates, and the electromagnet body is clamped to the U-shaped frame through the clamping plates.

[0009] Preferably, one side of the slider is fixedly connected to two symmetrically arranged reinforcing ribs, and the top of each of the two reinforcing ribs is fixedly connected to the extension plate.

[0010] Preferably, in any of the above embodiments, a guide rod is fixedly connected to the top of the slider, the guide rod is located inside the spring, and the guide rod is slidably connected to the support frame.

[0011] Preferably, in any of the above solutions, a rubber anti-collision ring is fixedly connected to the inner wall of each support frame, and the top surface of the rubber anti-collision ring is in contact with the bottom surface of the slider.

[0012] Preferably, in any of the above solutions, the slider is fixedly connected to both the front and rear sides with pins, and the support frame is provided with slots on both the front and rear sides, through which the pins are slidably connected to the support frame.

[0013] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0014] 1. In use, the electromagnet body is attached to the surface of one of the steel plates to be aligned. The position of the L-shaped code plate is adjusted using the adjusting plate in the adjusting frame, and the locking bolts are tightened to secure it. The hydraulic cylinder is activated, and its output end applies a thrust to the other steel plate, causing the lower side steel plate at the misalignment point to rise and the higher side steel plate to fall. After correction is complete, the electromagnet body is turned off to separate it from the steel plate, eliminating the need for cutting. The electromagnet body uses magnetic force to fix the L-shaped code plate, replacing the traditional welding and installation process, eliminating the need for initial welding and subsequent code plate removal, and avoiding material waste. It also eliminates the need for post-cut weld spatter grinding, reducing damage to the base material, lowering process complexity and labor costs, and significantly improving the efficiency of misalignment correction.

[0015] 2. When moving the device, the casters contact the ground, and the spring-supported slider lifts the electromagnet body away from the steel plate. When the electromagnet body approaches the steel plate and is activated, the device's own weight compresses the spring, the slider moves upward along the support frame, and the electromagnet body adheres to the surface of the steel plate to complete the adsorption. The pin slides along the groove, working with the guide rod to ensure smooth movement of the slider. The casters facilitate flexible movement of the device on the surface of the steel box girder, adapting to the correction needs of different misalignment positions. The cooperation between the spring and the slider ensures that the electromagnet body fits tightly against the steel plate during adsorption, guaranteeing adsorption stability, and can be quickly lifted for easy transfer when not adsorbing. The limiting function of the guide rod and the pin prevents the slider from deviating during movement, improving the overall structural reliability. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the assembly of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the electromagnet body of this utility model;

[0018] Figure 3 This is a first-view structural diagram of the U-shaped frame of this utility model;

[0019] Figure 4 This is a second-view structural diagram of the U-shaped frame of this utility model.

[0020] In the diagram: 1-Electromagnet body, 2-U-shaped frame, 3-Support frame, 4-Slider, 5-Spring, 6-Extension plate, 7-Wheel caster, 8-Adjusting frame, 9-Adjusting plate, 10-Locking bolt, 11-L-shaped plate, 12-Hydraulic cylinder, 13-Threaded hole, 14-Clamping plate, 15-Reinforcing rib plate, 16-Guide rod, 17-Rubber anti-collision ring, 18-Pin, 19-Slot. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0022] like Figures 1 to 4As shown, a misalignment correction device for butt welds of steel box girders includes an electromagnet body 1. A U-shaped frame 2 is fixedly installed on one side of the electromagnet body 1 by bolts. Two symmetrically arranged support frames 3 are fixedly connected to the left and right sides of the U-shaped frame 2, respectively. A slider 4 is slidably connected to the inner wall of each support frame 3. A spring 5 is fixedly connected between the slider 4 and the support frame 3. An extension plate 6 is fixedly connected to the side of each slider 4 away from the U-shaped frame 2. A caster wheel 7 is fixedly connected to the bottom surface of the extension plate 6. Two symmetrically arranged adjustment frames 8 are fixedly connected to the top surface of the electromagnet body 1. An adjustment plate 9 is slidably connected inside each adjustment frame 8. A locking bolt 10 is rotatably connected to the top of each adjustment frame 8. The screw parts of the two locking bolts 10 are threadedly connected to the two adjustment plates 9, respectively. An L-shaped code plate 11 is fixedly connected between the two adjustment plates 9. A hydraulic cylinder 12 is fixedly installed inside the L-shaped code plate 11 by bolts.

[0023] As an optional technical solution of this utility model, the top surface of each adjusting plate 9 is provided with a plurality of linearly arrayed threaded holes 13. The screws of the two locking bolts 10 are threadedly connected to the two adjusting plates 9 through the threaded holes 13 respectively. The plurality of threaded holes 13 on the top surface of the adjusting plate 9 cooperate with the locking bolts 10, so that the position of the adjusting plate 9 in the adjusting frame 8 can be flexibly adjusted, thereby changing the relative distance between the L-shaped code plate 11 and the electromagnet body 1, so that the hydraulic cylinder 12 can be adapted to the misalignment of steel box beams of different widths, improving the adaptability of the device to different working conditions. At the same time, the locking method of the threaded connection ensures the stability of the position after adjustment and avoids loosening during the correction process.

[0024] As an optional technical solution of this utility model, the inner wall of the U-shaped frame 2 is fixedly connected with two symmetrically arranged clamping plates 14. The electromagnet body 1 is clamped to the U-shaped frame 2 through the clamping plates 14. The clamping plates 14 on the inner wall of the U-shaped frame 2 are clamped to the electromagnet body 1, which can further enhance the connection stability of the two on the basis of bolt fixing, prevent the electromagnet body 1 from shifting or shaking due to vibration or force during operation, ensure the firmness of the electromagnet body 1 when adsorbing steel plate, and at the same time, the clamping structure facilitates the quick positioning and installation of the electromagnet body 1, improving assembly efficiency.

[0025] As an optional technical solution of this utility model, two symmetrically arranged reinforcing ribs 15 are fixedly connected to one side of the slider 4. The top of the two reinforcing ribs 15 are fixedly connected to the extension plate 6. The connection between the reinforcing ribs 15 on one side of the slider 4 and the extension plate 6 can enhance the connection strength between the slider 4 and the extension plate 6, prevent the extension plate 6 from bending or breaking due to excessive force when supporting the weight of the device or moving, ensure that the caster wheel 7 stably supports the device, extend the service life of the components, and ensure the structural reliability of the device when moving and working.

[0026] As an optional technical solution of this utility model, a guide rod 16 is fixedly connected to the top of the slider 4. The guide rod 16 is located inside the spring 5 and is slidably connected to the support frame 3. The guide rod 16 at the top of the slider 4 is located inside the spring 5 and is slidably connected to the support frame 3. It can provide guidance and limit for the spring 5, prevent the spring 5 from twisting or deviating during the extension and retraction process, ensure that the spring 5 is always subjected to axial force, maintain the stability of its elastic performance, and at the same time, the guide rod 16 assists the slider 4 to slide smoothly along the support frame 3 and avoids the slider 4 from getting stuck.

[0027] As an optional technical solution of this utility model, a rubber anti-collision ring 17 is fixedly connected to the inner wall of each support frame 3. The top surface of the rubber anti-collision ring 17 is in contact with the bottom surface of the slider 4. The rubber anti-collision ring 17 on the inner wall of the support frame 3 is in contact with the bottom surface of the slider 4, which can play a buffering role when the slider 4 moves down, reduce the impact force between the slider 4 and the support frame 3, avoid wear and deformation due to hard contact, reduce the noise when the device moves or works, and extend the service life of the support frame 3 and the slider 4.

[0028] As an optional technical solution of this utility model, the front and rear sides of the slider 4 are fixedly connected with pins 18, and the front and rear sides of the support frame 3 are provided with slots 19. The pins 18 are slidably connected to the support frame 3 through the slots 19. The pins 18 of the slider 4 slide through the slots 19 of the support frame 3, which can further restrict the movement trajectory of the directional block 4, prevent the slider 4 from rotating or tilting in the support frame 3, and ensure that the slider 4 moves smoothly in a straight line. In conjunction with the guide rod 16, the spring 5 is subjected to more even force. At the same time, the pins 18 can also serve as a limiting component for the slider 4 to prevent the slider 4 from falling out of the support frame 3.

[0029] A misalignment correction device for butt welds of steel box girders, the working principle of which is as follows:

[0030] 1): When in use, attach the electromagnet body 1 to the surface of one of the steel plates to be docked, adjust the position of the L-shaped code plate 11 by adjusting the adjusting plate 9 in the adjusting frame 8, and tighten the locking bolt 10 to fix it.

[0031] 2): Start hydraulic cylinder 12, and its output end applies a thrust to another steel plate, causing the lower side steel plate at the misalignment to rise and the higher side steel plate to fall.

[0032] 3) After correction, close the electromagnet body 1 to separate it from the steel plate; no cutting is required. The electromagnet body 1 is fixed by magnetic force, replacing the traditional welding installation of the L-shaped code plate, eliminating the need for initial welding and subsequent code plate removal, and avoiding waste of code plate material.

[0033] In summary, when using this steel box girder butt welding misalignment correction device, the electromagnet body 1 is attracted to the surface of one of the steel plates to be butt welded. The position of the L-shaped code plate 11 is adjusted by the adjusting plate 9 in the adjusting frame 8, and the locking bolt 10 is tightened to fix it. The hydraulic cylinder 12 is started, and its output end applies a thrust to the other steel plate, causing the lower side steel plate at the misalignment to rise and the higher side steel plate to fall. After the correction is completed, the electromagnet body 1 is turned off to separate it from the steel plate, and no cutting operation is required. The electromagnet body 1 replaces the traditional L-shaped code plate welding installation with magnetic fixation, eliminating the pre-welding and post-cutting of code plate processes and avoiding code plate material waste; at the same time, it eliminates the step of grinding weld scars after cutting, reducing damage to the base material, reducing process complexity and labor costs, and significantly improving the efficiency of misalignment correction. When the device is moved, the caster wheel 7 contacts the ground, and the spring 5 supports the slider 4 to lift the electromagnet body 1 away from the steel plate; when the electromagnet body 1 approaches the steel plate and is activated, the device's own weight compresses the spring 5, the slider 4 moves upward along the support frame 3, and the electromagnet body 1 adheres to the surface of the steel plate to complete the adsorption; the pin shaft 18 slides along the slot 19, and the guide rod 16 ensures the smooth movement of the slider 4. The caster wheel 7 allows the device to move flexibly on the surface of the steel box girder, adapting to the correction needs of different misalignment positions; the cooperation between the spring 5 and the slider 4 allows the electromagnet body 1 to fit tightly against the steel plate when adsorbing, ensuring adsorption stability, and can be quickly lifted for easy transfer when not adsorbing; the limiting function of the guide rod 16 and the pin 18 prevents the slider 4 from deviating during movement, improving the reliability of the overall structure.

Claims

1. A device for correcting misalignment in butt welds of steel box girders, characterized in that: The electromagnet body (1) is provided with a U-shaped frame (2) fixedly mounted on one side of the electromagnet body (1) by bolts. Two symmetrically arranged support frames (3) are fixedly connected to the left and right sides of the U-shaped frame (2). A slider (4) is slidably connected to the inner wall of each support frame (3). A spring (5) is fixedly connected between the slider (4) and the support frame (3). An extension plate (6) is fixedly connected to the side of each slider (4) away from the U-shaped frame (2). A caster wheel (7) is fixedly connected to the bottom surface of the extension plate (6). Two symmetrically arranged adjustment frames (8) are fixedly connected to the top surface of the electromagnet body (1). An adjustment plate (9) is slidably connected inside each adjustment frame (8). A locking bolt (10) is rotatably connected to the top of each adjustment frame (8). The screws of the two locking bolts (10) are threadedly connected to the two adjustment plates (9). An L-shaped code plate (11) is fixedly connected between the two adjustment plates (9). A hydraulic cylinder (12) is fixedly mounted inside the L-shaped code plate (11) by bolts.

2. The device for correcting misalignment in butt welds of steel box girders according to claim 1, characterized in that: Each of the adjustment plates (9) has a number of linearly arrayed threaded holes (13) on its top surface, and the screws of the two locking bolts (10) are threadedly connected to the two adjustment plates (9) through the threaded holes (13).

3. The device for correcting misalignment in butt welds of steel box girders according to claim 2, characterized in that: The inner wall of the U-shaped frame (2) is fixedly connected to two symmetrically arranged clamping plates (14), and the electromagnet body (1) is clamped to the U-shaped frame (2) through the clamping plates (14).

4. The misalignment correction device for butt welds of steel box girders according to claim 3, characterized in that: Two symmetrically arranged reinforcing ribs (15) are fixedly connected to one side of the slider (4), and the top of the two reinforcing ribs (15) are fixedly connected to the extension plate (6).

5. The device for correcting misalignment in butt welds of steel box girders according to claim 4, characterized in that: The top of the slider (4) is fixedly connected to a guide rod (16), which is located inside the spring (5) and is slidably connected to the support frame (3).

6. The device for correcting misalignment in butt welds of steel box girders according to claim 5, characterized in that: Each of the support frames (3) has a rubber anti-collision ring (17) fixedly connected to its inner wall, and the top surface of the rubber anti-collision ring (17) is in contact with the bottom surface of the slider (4).

7. A device for correcting misalignment in butt welds of steel box girders according to claim 6, characterized in that: The slider (4) is fixedly connected to the front and rear sides with pins (18), and the support frame (3) is provided with slots (19) on both the front and rear sides. The pins (18) are slidably connected to the support frame (3) through the slots (19).

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