Limiting tool for improving field butt joint precision of steel box arch

Abstract

The utility model provides a limiting tool for improving field butt joint precision of a steel box arch, which belongs to the technical field of field butt joint of the steel box arch and comprises a top plate matching piece, a web plate matching piece, a top stopping plate and a bottom plate matching piece, the top plate matching piece is arranged on the outer side of the end of the top plate, and the web plate matching piece is arranged on the inner side of the end of the web plate. The top stopping plate is arranged on the inner side of the end of the web, and the bottom plate matching piece is arranged on the inner side of the end of the bottom plate. Calibration during connection of the sections can be achieved by arranging the matching piece, meanwhile, the top stopping plate is arranged, the assembly distance between the two sections during connection can be guaranteed, the situation that the two sections are attached too close and inconvenient to install is avoided, meanwhile, the top stopping plate can achieve the automatic calibration effect, the two sections are clamped mutually, and the effect is better.

Description

Technical Field

[0001] This utility model relates to the field of on-site docking technology for steel box arches, and in particular to a limiting tooling for improving the accuracy of on-site docking of steel box arches. Background Technology

[0002] Existing steel arch bridges mostly employ an insertion-type connection method for member splicing. This involves installing a splice plate at the tail of the member to be hoisted, but not at the top, and then inserting it into the top of the already hoisted member to complete the connection. Alternatively, a splice plate can be installed at the top of the member, but not at the tail. After the members are transported to the hoisting site, installing the splice plates is the most time-consuming step before hoisting. Currently, most construction methods use a combination of manual labor and machinery to install the splice plates one by one onto the members. This method is fast for smaller and lighter splice plates, but it is unsuitable for larger splice plates weighing nearly two tons.

[0003] Existing steel box arch on-site docking is cumbersome and the accuracy cannot be guaranteed. Therefore, it is necessary to design a limiting tooling to improve the on-site docking accuracy of steel box arches. Utility Model Content

[0004] The purpose of this utility model is to provide a limiting tooling that improves the on-site docking accuracy of steel box arches, and to solve the technical problem that the on-site docking accuracy of existing steel box arches cannot be guaranteed.

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

[0006] A limiting fixture for improving the on-site docking accuracy of steel box arches includes a top plate matching component, a web plate matching component, a top stop plate, and a bottom plate matching component. The top plate matching component is located on the outer side of the top plate end, the web plate matching component is located on the inner side of the web plate end, the top stop plate is located on the inner side of the web plate end, and the bottom plate matching component is located on the inner side of the bottom plate end.

[0007] Furthermore, the top plate matching component includes two horizontal plates, a connecting plate, and a tie rod hole. The connecting plate is disposed between the two horizontal plates, and the tie rod hole is disposed on the horizontal plates.

[0008] Furthermore, the top plate matching parts of the two segments are fixed with tie rods passing through the horizontal plate, and bolts are tightened at both ends of the tie rods.

[0009] Furthermore, the top plate matching component, web plate matching component, and bottom plate matching component have the same structure, and are all fixed by tie rod connection.

[0010] Furthermore, the top stop plate is an inner steel plate welded to the end of the web plate, and a limit end face is provided at the front end of the top stop plate.

[0011] Furthermore, the limiting end face includes an upper platform, an inclined surface, and a lower platform. The upper platform and the lower platform are respectively disposed on the sides of the two ends of the inclined surface. The upper platform extends out of the end of the segment, and the lower platform is disposed inside the segment. The upper platform is engaged with the lower platform of another segment, and the lower platform is engaged with the upper platform of another segment.

[0012] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0013] This invention enables calibration during segment connection by setting matching parts, and the addition of a stop plate ensures the assembly distance between the two segments during connection, preventing them from fitting too close and making installation inconvenient. The stop plate also enables automatic calibration, and the two interlocking plates provide better performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the limiting tooling of this utility model;

[0015] Figure 2 This is the main view of the matching component of this utility model;

[0016] Figure 3 This is a top view of the matching component of this utility model;

[0017] Figure 4 This is a schematic diagram of the top stop plate structure of this utility model.

[0018] In the attached diagram, 1-top plate matching part, 2-web plate matching part, 3-top plate stop, 4-bottom plate matching part, 5-horizontal plate, 6-connecting plate, 7-tie rod hole, 8-tie rod, 9-segment dividing line, 10-upper platform, 11-sloping surface, 12-lower platform. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of this utility model, and these aspects can be achieved even without these specific details.

[0020] like Figure 1-2As shown, a limiting fixture for improving the on-site docking accuracy of steel box arches includes a top plate matching component 1, a web plate matching component 2, a top stop plate 3, and a bottom plate matching component 4. The top plate matching component 1 is located on the outer side of the top plate end, the web plate matching component 2 is located on the inner side of the web plate end, the top stop plate 3 is located on the inner side of the web plate end, and the bottom plate matching component 4 is located on the inner side of the bottom plate end. There are four top plate matching components 1, and four web plate matching components 2 on each of the two web plates. There are three bottom plate matching components 4.

[0021] In this embodiment of the utility model, such as Figure 2-3 As shown, the top plate matching component 1 includes two horizontal plates 5, a connecting plate 6, and a tie rod hole 7. The connecting plate 6 is located between the two horizontal plates 5, and the tie rod hole 7 is located on the horizontal plate 5. Tie rods 8 are used to fix the two segments of the top plate matching component 1 through the horizontal plates 5, and bolts are used at both ends of the tie rods 8 for tightening. The top plate matching component 1, the web plate matching component 2, and the bottom plate matching component 4 have the same structure, all connected and fixed by tie rods 8. There are two connecting plates 6, one on each side of the tie rod 8. The top plate matching component 1 is made of steel plate and is fixed by welding.

[0022] In this embodiment of the utility model, such as Figure 4 As shown, the top plate 3 is an inner steel plate welded to the end of the web plate, and a limiting end face is provided at the front end of the top plate 3. The limiting end face includes an upper platform 10, an inclined surface 11, and a lower platform 12. The upper platform 10 and the lower platform 12 are respectively located on the sides of both ends of the inclined surface 11. The upper platform 10 extends out of the end of the segment, and the lower platform 12 is located inside the segment. The upper platform 10 is engaged with the lower platform 12 of another segment, and the lower platform 12 is engaged with the upper platform 10 of another segment. The inclined surface 11 provides better fit during installation, resulting in better installation efficiency. Precise positioning is not required; instead, the two inclined surfaces of the inclined surface 11 are used for calibration, leading to better installation results.

[0023] The mating parts are welded to the panel using 8mm and 12mm fillet welds. The top plate is welded to the panel with an 8mm weld leg, and all welds must be full welds. Areas that would affect the high-strength bolt connection should be bolted on after the mating parts are removed.

[0024] 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 limiting tooling for improving the on-site docking accuracy of steel box arches, characterized in that: It includes a top plate matching component (1), a web plate matching component (2), a top plate stop (3), and a bottom plate matching component (4). The top plate matching component (1) is located on the outer side of the top plate end, the web plate matching component (2) is located on the inner side of the web plate end, the top plate stop (3) is located on the inner side of the web plate end, and the bottom plate matching component (4) is located on the inner side of the bottom plate end.

2. The limiting tooling for improving the on-site docking accuracy of steel box arches according to claim 1, characterized in that: The top plate matching component (1) includes two horizontal plates (5), a connecting plate (6) and a tie rod hole (7). The connecting plate (6) is located between the two horizontal plates (5), and the tie rod hole (7) is located on the horizontal plate (5).

3. The limiting tooling for improving the on-site docking accuracy of steel box arches according to claim 2, characterized in that: The top plate matching parts (1) of the two segments are fixed with tie rods (8) passing through the cross plate (5), and bolts are set at both ends of the tie rods (8) for tightening.

4. The limiting tooling for improving the on-site docking accuracy of steel box arches according to claim 1, characterized in that: The top plate matching part (1), the web plate matching part (2) and the bottom plate matching part (4) have the same structure, and are all connected and fixed by tie rods (8).

5. The limiting tooling for improving the on-site docking accuracy of steel box arches according to claim 1, characterized in that: The top plate (3) is an inner steel plate welded to the end of the web plate, and the front end of the top plate (3) is provided with a limiting end face.

6. The limiting tooling for improving the on-site docking accuracy of steel box arches according to claim 5, characterized in that: The limiting end face includes an upper platform (10), an inclined surface (11), and a lower platform (12). The upper platform (10) and the lower platform (12) are respectively disposed on the sides of both ends of the inclined surface (11). The upper platform (10) extends out of the end of the segment, and the lower platform (12) is disposed inside the segment. The upper platform (10) is engaged with the lower platform (12) of another segment, and the lower platform (12) is engaged with the upper platform (10) of another segment.

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