A support structure for steel box girder manufacturing

Abstract

The utility model discloses a kind of steel box girder making support structures, relate to steel box girder technical field.The utility model includes base, base upper surface is opened with adjusting groove, adjusting groove both sides are fixed with support bar;Support bar inside is slidably connected with support block, and support block one side is fixed with moving strip;Moving strip top is fixed with support frame;Base both sides are fixed with support, and support one side is fixed with several positioning frame;Positioning frame upper surface is movably connected with positioning plate, and positioning plate surface is fixed with threaded tube;Threaded tube inside is threadedly connected with threaded rod.The utility model is through the effect of support frame, support frame is fixed by moving strip and support block, and support block can slide along support bar, can adjust position according to the different width of steel box girder, adapt the support demand of multiple specifications steel box girder, improve device versatility, and after adjusting in place, support frame can be cooperated with the support of base both sides, and form clamping force from steel box girder both sides.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel box girder technology, and in particular relates to a support structure for the fabrication of steel box girders. Background Technology

[0002] In bridge engineering, municipal infrastructure, and large transportation hub construction, steel box girders have become the preferred choice for core components such as main beams of long-span bridges and elevated roadways due to their advantages of high load-bearing capacity, excellent wind resistance, and good adaptability to construction cycles. During the prefabrication in the factory or on-site segmented fabrication of steel box girders, precise positioning and stable fixation are achieved through specialized support structures. The effectiveness of these supports directly determines the welding accuracy, assembly tolerances, and overall structural flatness of the steel box girder. Deviations or instability in the support structure can easily lead to welding misalignment, localized stress deformation, and even safety hazards during subsequent hoisting and installation. Therefore, the support structure is a crucial auxiliary device in the steel box girder fabrication process.

[0003] However, the support structures for steel box girders currently widely used in the industry generally suffer from the core problems of poor versatility and insufficient width adaptability. Existing support structures mostly adopt a one-to-one fixed design, meaning that the support frame is customized for a specific width of steel box girder. This fixed-size design necessitates the fabrication of multiple sets of support equipment for steel box girders of different specifications, significantly increasing equipment procurement costs and requiring substantial storage space to store support components of varying sizes, resulting in resource waste.

[0004] To address these issues, we provide a support structure for the fabrication of steel box girders. Utility Model Content

[0005] The purpose of this utility model is to provide a support structure for the fabrication of steel box girders. Through the action of the support frame, the support frame is fixed to the support block by the movable strip, and the support block can slide along the support strip. The position can be adjusted according to the different widths of the steel box girder, adapting to the support needs of various specifications of steel box girders, improving the versatility of the device. After adjustment, the support frame can cooperate with the brackets on both sides of the base to form a clamping force from both sides of the steel box girder, effectively limiting the lateral displacement of the steel box girder during the fabrication process, and providing a stable lateral support foundation for the steel box girder. This solves the problem that existing support structures mostly adopt a one-to-one fixed design, that is, a support frame is customized for a steel box girder of a specific width specification. This fixed size design leads to the need to process multiple sets of support equipment for steel box girders of different specifications, which not only greatly increases the equipment procurement cost, but also requires a lot of storage space to store support components of different specifications.

[0006] To solve the above technical problems, this utility model is achieved through the following technical solution: This utility model is a support structure for the fabrication of steel box girders, including a base, an adjustment groove is opened on the upper surface of the base, and support strips are fixed on both sides of the adjustment groove;

[0007] A support block is slidably connected inside the support bar, and a movable bar is fixed on one side of the support block;

[0008] A support frame is fixed to the top of the movable bar;

[0009] Both sides of the base are fixed with brackets, and one side of each bracket is fixed with several positioning frames.

[0010] A positioning plate is movably connected to the upper surface of the positioning frame, and a threaded tube is fixed to the surface of the positioning plate;

[0011] The threaded tube is internally connected to a threaded rod, and a bearing is fixed at one end of the threaded rod.

[0012] A transmission rod is fixed to the inner ring of the bearing, and a movable plate is fixed to one end of the transmission rod;

[0013] A first fixing hook is fixed on one side of the movable plate, and a second fixing hook is fixed on both sides of the support frame.

[0014] The present invention is further configured such that: the surface of the support bar and the support block are both provided with a first threaded hole, and a first bolt is threadedly connected inside the first threaded hole.

[0015] The present invention is further configured such that: a connecting plate is fixed to the bottom of the positioning plate, and a telescopic rod is fixed to one side of the connecting plate.

[0016] The present invention is further configured such that: a motor is fixed to one end of the telescopic rod, and the output shaft of the motor is fixedly connected to the threaded rod.

[0017] The present invention is further configured such that: a limit rod is fixed on one side of the movable plate, and a limit hole is opened on the surface of the positioning plate;

[0018] The limiting rod passes through the limiting hole.

[0019] The present invention is further configured such that: both ends of the positioning plate are fixed with fixing plates, and both the fixing plates and the surface of the bracket are provided with second threaded holes;

[0020] The second threaded hole has a second bolt connected to it.

[0021] The present invention is further configured such that: a support hole is provided at the bottom of the positioning plate;

[0022] The positioning frame has an "L" shaped structure, and a support rod is fixed inside the positioning frame;

[0023] The support rod is matched with the support hole.

[0024] This utility model has the following beneficial effects:

[0025] 1. This utility model utilizes a support frame, which is fixed to a support block via a movable strip. The support block can slide along the support strip, allowing its position to be adjusted according to different widths of the steel box girder. This adapts to the support requirements of various specifications of steel box girders, improving the versatility of the device. After adjustment, the support frame can cooperate with the brackets on both sides of the base to form a clamping force from both sides of the steel box girder, effectively limiting the lateral displacement of the steel box girder during manufacturing and providing a stable lateral support foundation. At the same time, second fixing hooks are fixed on both sides of the support frame, which can cooperate with the first fixing hook on the movable plate to form multi-directional fixation through the winding of fixing ropes, further enhancing the fixation stability of the steel box girder and reducing swaying or displacement of the steel box girder during manufacturing.

[0026] 2. This utility model utilizes the positioning plate, which has a support hole at the bottom that can be matched and connected with the support rod inside the "L"-shaped positioning frame. By selecting different positions of the support hole and the support rod, the positioning plate can be adjusted according to the height of the steel box girder to meet the support requirements of steel box girders of different heights. Furthermore, the positioning plate has fixing plates at both ends. By passing the second bolt through the second threaded hole of the fixing plate and the bracket, the positioning plate can be firmly fixed to the bracket to prevent displacement during the fixing of the steel box girder. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of a support structure for fabricating a steel box girder according to the present invention.

[0029] Figure 2 This is a side view structural diagram of the present invention.

[0030] Figure 3 For the present utility model Figure 2 Enlarged view of a portion of point A in the middle.

[0031] Figure 4 This is a schematic diagram of the support frame structure of this utility model.

[0032] Figure 5 For the present utility model Figure 4 Enlarged view of section B in the middle.

[0033] Figure 6 This is a schematic diagram of the movable plate structure of this utility model.

[0034] Figure 7 This is a schematic diagram of the positioning plate structure of this utility model.

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Base, 2-Adjustment groove, 3-Support bar, 4-Support block, 5-Moving bar, 6-Support frame, 7-Bracket, 8-Positioning frame, 9-Positioning plate, 10-Threaded pipe, 11-Threaded rod, 12-Bearing, 13-Transmission rod, 14-Movable plate, 15-First fixed hook, 16-Second fixed hook, 17-First threaded hole, 18-First bolt, 19-Connecting plate, 20-Telescopic rod, 21-Motor, 22-Limiting rod, 23-Limiting hole, 24-Fixed plate, 25-Second threaded hole, 26-Second bolt, 27-Supporting hole, 28-Supporting rod. Detailed Implementation

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0039] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model. Specific Implementation Example 1

[0041] Please see Figures 1-7This utility model is a support structure for the fabrication of steel box girders, including a base 1, an adjustment groove 2 on the upper surface of the base 1, and support bars 3 fixed on both sides of the adjustment groove 2; a support block 4 is slidably connected inside the support bar 3, and a movable bar 5 is fixed on one side of the support block 4; a support frame 6 is fixed on the top of the movable bar 5; brackets 7 are fixed on both sides of the base 1, and several positioning frames 8 are fixed on one side of the brackets 7; a positioning plate 9 is movably connected to the upper surface of the positioning frame 8, and a threaded tube 10 is fixed on the surface of the positioning plate 9; a threaded rod 11 is threadedly connected inside the threaded tube 10, and a bearing 12 is fixed at one end of the threaded rod 11; a transmission rod 13 is fixed to the inner ring of the bearing 12, and a movable plate 14 is fixed at one end of the transmission rod 13; a first fixing hook 15 is fixed on one side of the movable plate 14, and a second fixing hook 16 is fixed on both sides of the support frame 6.

[0042] Specifically, both the support bar 3 and the support block 4 have a first threaded hole 17 on their surfaces, and a first bolt 18 is threaded inside the first threaded hole 17.

[0043] Furthermore, a connecting plate 19 is fixed to the bottom of the positioning plate 9, and a telescopic rod 20 is fixed to one side of the connecting plate 19; a motor 21 is fixed to one end of the telescopic rod 20, and the output shaft of the motor 21 is fixedly connected to the threaded rod 11.

[0044] The operation process of this embodiment is as follows: Before using this device, first push the support frame 6. The support frame 6 is fixedly connected to the support block 4 through the moving strip 5, and the support block 4 is slidably connected inside the support strip 3. Under the action of the thrust, the support block 4 will slide along the length direction of the support strip 3, thereby driving the moving strip 5 and the support frame 6 to move above the adjustment groove 2 of the base 1. During the movement of the support frame 6, continuously measure the distance between the support frame 6 and the side bracket 7 to match the width of the steel box beam to be supported, ensuring that after the steel box beam is placed, the support frame 6 and the bracket 7 can form a stable clamp on the steel box beam from both sides. When the position of the support frame 6 is adjusted to a suitable position, stop pushing, insert the first bolt 18 into the aligned first threaded hole 17, and turn the first bolt 18 until the first bolt 18 is tightened, so that the support block 4 and the support strip 3 are tightly fixed, thereby fixing the position of the support frame 6 and preventing it from moving during subsequent operation and use. Then observe the height of the steel box beam to be supported to determine the approximate height position to which the positioning plate 9 needs to be adjusted. After completing the adjustment and fixing of the support frame 6 and the positioning plate 9, use hoisting equipment to... The equipment slowly lifts the steel box girder to be supported and places it stably on the base 1, ensuring that one side of the steel box girder is tightly fitted with the fixed support frame 6 and the other side is close to the bracket 7. This ensures the steel box girder is placed stably. The prepared fixing rope is then taken out, and one end of the rope is first looped around the first fixing hook 15 on one side of the movable plate 14. The rope is then pulled towards the steel box girder, looping around it to a suitable position to ensure close contact between the rope and the surface of the steel box girder. The rope is then pulled towards the support frame 6, looping around the second fixing hooks 16 on both sides of the support frame 6 to adjust the tension of the fixing rope. The safety rope can firmly fix the steel box girder to the supporting structure. If further strengthening of the fixing effect is required, the motor 21 can be started. The output shaft of the motor 21 drives the threaded rod 11 to rotate. Since the threaded rod 11 is threadedly connected to the threaded tube 10 and the threaded tube 10 is fixed on the surface of the positioning plate 9, the threaded rod 11 will move along the axial direction of the threaded tube 10 when it rotates. Through the bearing 12 and the transmission rod 13, the movable plate 14 is moved. The limiting rod 22 on one side of the movable plate 14 will slide along the limiting hole 23 on the surface of the positioning plate 9 to ensure that the movable plate 14 moves smoothly. The movement of the movable plate 14 further tightens the fixing ropes, making the steel box girder more secure. In this device, the support frame 6 is fixed to the support block 4 via the movable strip 5, and the support block 4 can slide along the support strip 3, adjusting its position according to the different widths of the steel box girder. This adapts to the support requirements of various specifications of steel box girders, improving the versatility of the device. After adjustment, the support frame 6 can cooperate with the brackets 7 on both sides of the base 1 to form a clamping force from both sides of the steel box girder, effectively limiting the lateral displacement of the steel box girder during the manufacturing process and providing a stable lateral support foundation for the steel box girder. At the same time, the support frame 6 is fixed with second fixing hooks 16 on both sides, which can cooperate with the first fixing hooks 15 on the movable plate 14 to form multi-directional fixation by winding the fixing ropes, further enhancing the fixation stability of the steel box girder and reducing the swaying or displacement of the steel box girder during manufacturing. Specific Implementation Example 2

[0046] Please see Figures 6-7 Based on the first specific embodiment, a limiting rod 22 is fixed on one side of the movable plate 14, and a limiting hole 23 is opened on the surface of the positioning plate 9; the limiting rod 22 passes through the limiting hole 23.

[0047] Specifically, both ends of the positioning plate 9 are fixed with fixing plates 24, and the fixing plates 24 and the bracket 7 are both provided with second threaded holes 25; the second threaded holes 25 are internally threaded with second bolts 26.

[0048] Furthermore, the bottom of the positioning plate 9 has a support hole 27; the positioning frame 8 has an "L" shaped structure, and a support rod 28 is fixed inside the positioning frame 8; the support rod 28 matches the support hole 27.

[0049] The operation process of this embodiment is as follows: When using this device, since the positioning frame 8 has an "L" shaped structure and a support rod 28 is fixed inside, and the bottom of the positioning plate 9 has a support hole 27 that matches the support rod 28, the height of the positioning plate 9 can be adjusted by fitting the support holes 27 at different positions on the corresponding support rods 28 inside the positioning frame 8. After the height of the positioning plate 9 is adjusted to a suitable level, align the second threaded holes 25 on the surfaces of the fixing plates 24 and the bracket 7 at both ends of the positioning plate 9, insert the second bolt 26 into the aligned second threaded holes 25, and use a wrench to turn the second bolt 26 clockwise to tighten the fixing plates 24 and the bracket 7. The positioning plate 9 is securely fixed to prevent it from moving up and down during subsequent use. In this device, the bottom of the positioning plate 9 has a support hole 27, which can be matched and connected with the support rod 28 inside the "L"-shaped positioning frame 8. By selecting different positions of the support hole 27 and the support rod 28, the position can be adjusted according to the height of the steel box girder to meet the support requirements of steel box girders of different heights. The positioning plate 9 is provided with fixing plates 24 at both ends. By passing the second bolt 26 through the fixing plate 24 and the second threaded hole 25 of the bracket 7, the positioning plate 9 can be firmly fixed to the bracket 7 to prevent it from shifting during the fixing of the steel box girder.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A support structure for fabricating steel box girders, comprising a base (1), characterized in that: The upper surface of the base (1) has an adjustment groove (2), and support bars (3) are fixed on both sides of the adjustment groove (2). The support bar (3) is slidably connected to a support block (4), and a movable bar (5) is fixed on one side of the support block (4). The top of the movable bar (5) is fixed with a support frame (6); The base (1) has brackets (7) fixed on both sides, and several positioning frames (8) are fixed on one side of the brackets (7). The positioning frame (8) is movably connected to a positioning plate (9), and a threaded tube (10) is fixed to the surface of the positioning plate (9). The threaded tube (10) is internally threaded with a threaded rod (11), and a bearing (12) is fixed at one end of the threaded rod (11). The inner ring of the bearing (12) is fixed with a transmission rod (13), and a movable plate (14) is fixed at one end of the transmission rod (13). The movable plate (14) is fixed with a first fixing hook (15) on one side, and the support frame (6) is fixed with a second fixing hook (16) on both sides.

2. The support structure for fabricating a steel box girder according to claim 1, characterized in that, The support bar (3) and the support block (4) are both provided with a first threaded hole (17), and a first bolt (18) is threaded inside the first threaded hole (17).

3. The support structure for fabricating a steel box girder according to claim 1, characterized in that, The bottom of the positioning plate (9) is fixed with a connecting plate (19), and a telescopic rod (20) is fixed on one side of the connecting plate (19).

4. The support structure for fabricating a steel box girder according to claim 3, characterized in that, One end of the telescopic rod (20) is fixed with a motor (21), and the output shaft of the motor (21) is fixedly connected to the threaded rod (11).

5. The support structure for fabricating a steel box girder according to claim 1, characterized in that, A limit rod (22) is fixed on one side of the movable plate (14), and a limit hole (23) is opened on the surface of the positioning plate (9). The limiting rod (22) passes through the limiting hole (23).

6. The support structure for fabricating a steel box girder according to claim 1, characterized in that, The positioning plate (9) is fixed with a fixing plate (24) at both ends, and the fixing plate (24) and the bracket (7) are both provided with a second threaded hole (25). The second threaded hole (25) is internally threaded with a second bolt (26).

7. The support structure for fabricating a steel box girder according to claim 1, characterized in that, The bottom of the positioning plate (9) has a support hole (27); The positioning frame (8) has an "L" shaped structure, and a support rod (28) is fixed inside the positioning frame (8). The support rod (28) matches the support hole (27).

Images