Magnetic pedestrian passage for steel box girder installation

Abstract

The utility model relates to the technical field of steel box girder pedestrian passageway, concretely is a kind of magnetic pedestrian passageway for steel box girder installation, including pedestrian passageway main body, the one side of pedestrian passageway main body is equipped with connecting angle steel, and the one side fixedly connected with upper channel steel and lower channel steel respectively located in the upper and lower of steel box girder edge, the other end of lower channel steel extends to steel box girder inner side, and the part of lower channel steel located in steel box girder inner side is equipped with clamping groove on, and lower channel steel is also equipped with the clamping groove steel of being inserted into cooperation by clamping groove, the region between clamping groove inside lower channel steel is also equipped with strong magnet, and strong magnet makes clamping groove steel when inserting into clamping groove can be firmly adsorbed and fixed.The magnetic pedestrian passageway for steel box girder installation can realize the quick disassembly of steel box girder construction pedestrian passageway by magnetic buckle, improve construction efficiency, and after repeated turnover use, durability is better, and safety is higher, and it is more significant for the steel box girder pedestrian passageway of repeated disassembly of each span.

Description

Technical Field

[0001] This utility model relates to the field of pedestrian walkway technology for steel box girders, specifically a magnetic pedestrian walkway for the installation of steel box girders. Background Technology

[0002] Steel box girders, also known as steel plate box girders, are a common structural form for long-span bridges. During the construction of steel box girders, pedestrian walkways need to be built at appropriate locations. These walkways provide a safe, high-altitude passage for construction workers to perform welding, bolting, and anti-corrosion coating operations on the top surface, web, or box girders, as well as for workers to move between adjacent segments during on-site assembly (such as cantilever assembly or scaffold assembly) after the steel box girders are prefabricated in sections.

[0003] Traditional steel box girder pedestrian walkways are usually fixed to the steel box girder with bolts to prevent them from moving. However, during installation and dismantling, operators often need to descend to the bottom of the steel box girder to connect the tie rods, which is inconvenient. In addition, after repeated use, the tie rods and holes are prone to wear, which reduces safety. Utility Model Content

[0004] The purpose of this invention is to provide a magnetic pedestrian walkway for the installation of steel box girders, so as to solve the problem mentioned in the background art that the traditional steel box girder pedestrian walkway, which uses bolt-fixed tie rods for installation, is inconvenient to install and dismantle.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetic pedestrian walkway for installing steel box girders, comprising a pedestrian walkway body, a connecting angle steel on one side of the pedestrian walkway body, and an upper channel steel and a lower channel steel respectively located above and below the edge of the steel box girder on one side of the connecting angle steel, for erecting the pedestrian walkway body on the steel box girder, the other end of the lower channel steel extending to the inner side of the steel box girder, a slot being formed on the portion of the lower channel steel located on the inner side of the steel box girder, and a snap-fit ​​channel steel being provided on the lower channel steel through the slot insertion, the snap-fit ​​channel steel being located on the inner side of the steel box girder to restrict the horizontal movement of the pedestrian walkway body, and a strong magnet being provided inside the lower channel steel in the area between the slots, the strong magnet enabling the snap-fit ​​channel steel to be firmly attracted and fixed when inserted into the slot.

[0006] Preferably, the buckle channel steel is an inverted "U" shaped structure with a top plate at the top, plug-in plates on both sides, and a grip handle on the top plate.

[0007] Preferably, two slots are provided on the lower channel steel, and the direction of the slots is perpendicular to the direction in which the main body of the pedestrian passage is inserted into the edge of the steel box girder. The shape and position of the slots correspond to the shape and position of the plug-in plate, and the depth of the slots is less than the height of the plug-in plate.

[0008] Preferably, the other end of the lower channel steel is also provided with a positioning plate, which is hinged to the lower channel steel so that the positioning plate can be located on one side of the lower channel steel or flipped to the surface of the lower channel steel.

[0009] Preferably, the positioning plate has two grooves on its surface, and the rear end of the plug-in plate has a protrusion that can slide and engage with the grooves on the positioning plate surface. When the positioning plate is flipped to the surface of the lower channel steel, the position of the groove on the positioning plate surface corresponds to the position of the slot on the lower channel steel.

[0010] Preferably, the end of the positioning plate is also provided with a magnetic block, which can be attracted to the surface of the lower channel steel when the positioning plate is flipped over.

[0011] Compared with existing technologies, the advantages of this utility model are as follows: This magnetic pedestrian walkway for steel box girder installation enables rapid assembly and disassembly of the walkway during steel box girder construction through magnetic snap-fit, improving construction efficiency. Furthermore, it exhibits good durability and enhanced safety after repeated use, making it particularly significant for steel box girder walkways that require repeated assembly and disassembly for each span. The device utilizes a strong magnet within the lower channel steel to provide magnetic attraction when the snap-fit ​​channel steel is inserted into the slot, thus firmly securing it. This magnetic fixing method simplifies installation, eliminating the need for operators to reach under the steel box girder to connect the tie rods. Assembly and disassembly can be performed blindly, enhancing safety. Additionally, the device includes a positioning plate with grooves that allow for precise and convenient insertion of the snap-fit ​​channel steel into the slots, further simplifying operation. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a magnetic pedestrian walkway for installing steel box girders according to the present invention;

[0013] Figure 2 This is a schematic cross-sectional view of the connection between the snap-fit ​​channel steel and the lower channel steel of a magnetic pedestrian walkway for steel box girder installation according to this utility model.

[0014] Figure 3 This is a top view schematic diagram of the lower channel steel structure of a magnetic pedestrian walkway for installing steel box girders according to this utility model.

[0015] Figure 4 This is a top view of the positioning plate of a magnetic pedestrian walkway for steel box girder installation, when it is flipped onto the surface of the lower channel steel.

[0016] Figure 5 This is a schematic diagram of the snap-fit ​​channel steel and the lower channel steel of a magnetic pedestrian passage for steel box girder installation according to the present invention.

[0017] Figure 6This is a top view of the structure of the magnetic pedestrian walkway for steel box girder installation, where the rear end of the plug plate mates with the groove on the surface of the positioning plate.

[0018] Figure 7 This is a schematic diagram of the existing steel box girder pedestrian walkway connection structure.

[0019] In the diagram: 1. Main body of pedestrian walkway; 2. Connecting angle steel; 3. Upper channel steel; 4. Lower channel steel; 5. Buckle channel steel; 501. Top plate; 502. Insertion plate; 6. Positioning plate; 7. Strong magnet; 8. Slot; 9. Magnetic block. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-7This utility model provides a technical solution: a magnetic pedestrian walkway for installing steel box girders, comprising a pedestrian walkway body 1, a connecting angle steel 2 on one side of the pedestrian walkway body 1, and an upper channel steel 3 and a lower channel steel 4 respectively located above and below the edge of the steel box girder, which are fixedly connected to the connecting angle steel 2 by welding. The upper channel steel 3 and the lower channel steel 4 are respectively set above and below the edge of the steel box girder to support the pedestrian walkway body 1 on the steel box girder. The other end of the lower channel steel 4 extends to the inside of the steel box girder. A slot 8 is formed on the part of the lower channel steel 4 located on the inside of the steel box girder, and a snap-fit ​​channel steel 5 is also provided on the lower channel steel 4, which is engaged with the slot 8. The snap-fit ​​channel steel 5 is located on the inside of the steel box girder to restrict the horizontal movement of the pedestrian walkway body 1, thereby cooperating with the upper channel steel 3 and the lower channel steel 4 to support the pedestrian walkway body 1. The main body 1 of the pedestrian walkway is securely fixed to the steel box girder. The snap-fit ​​channel steel 5 has an inverted "U" shape structure, with a top plate 501 at the top and insertion plates 502 on both sides. The top plate 501 also has a handle for easy handling of the snap-fit ​​channel steel 5. Two snap-fit ​​slots 8 are opened on the lower channel steel 4, and the opening direction of the snap-fit ​​slots 8 is perpendicular to the direction in which the main body 1 of the pedestrian walkway is snapped into the edge of the steel box girder. The shape and position of the snap-fit ​​slots 8 correspond to the shape and position of the insertion plates 502, and the depth of the snap-fit ​​slots 8 is less than the height of the insertion plates 502. This structure allows the snap-fit ​​channel steel 5 to be inserted into the snap-fit ​​slots 8 through the insertion plates 502 on both sides. After the insertion plates 502 are inserted into the snap-fit ​​slots 8, the remaining external part of the insertion plates 502 can resist the steel box girder and restrict the main body 1 of the pedestrian walkway. The horizontal movement allows the main body 1 of the pedestrian walkway to be stably erected on the steel box girder. A strong magnet 7 is also provided inside the lower channel steel 4 in the area between the slots 8. The strong magnet 7 allows the snap-on channel steel 5 to be firmly attracted and fixed when inserted into the slots 8. The snap-on channel steel 5 is securely connected to the lower channel steel 4 through magnetic attraction. A positioning plate 6 is also provided at the other end of the lower channel steel 4. The positioning plate 6 is hinged to the lower channel steel 4 via a pin or hinge, allowing the positioning plate 6 to be positioned on one side of the lower channel steel 4 or to be flipped onto the surface of the lower channel steel 4. Two grooves are provided on the surface of the positioning plate 6, and a protrusion on the rear end of the insertion plate 502 is provided that can slide and engage with the grooves on the surface of the positioning plate 6. Furthermore, when the positioning plate 6 is flipped onto the surface of the lower channel steel 4, the position of the grooves on the surface of the positioning plate 6 is aligned with the lower channel steel 4. The upper slot 8 corresponds to the lower slot 8. When the snap-fit ​​channel steel 5 is inserted into the slot 8 in the lower slot steel 4, the positioning plate 6 can be flipped to the surface of the lower slot steel 4. By inserting the protrusion at the rear end of the plug plate 502 into the groove on the surface of the positioning plate 6, the snap-fit ​​channel steel 5 can slide smoothly and accurately into the slot 8 through the sliding cooperation between the two. This avoids the inconvenience of adjusting the position of the snap-fit ​​channel steel 5 due to magnetic attraction when the direct insertion is inaccurate. The end of the positioning plate 6 is also provided with a magnetic block 9. When the positioning plate 6 is flipped to the surface of the lower slot steel 4, the magnetic block 9 can be attracted to the surface of the lower slot steel 4. This structure allows the positioning plate 6 to be easily fixed on the lower slot steel 4 by the magnetic block 9 at the end of the positioning plate 6 being attracted to the surface of the lower slot steel 4, which facilitates the positioning of the snap-fit ​​channel steel 5 when it is inserted into the slot 8.

[0022] Working principle: When using this magnetic pedestrian walkway for steel box girder installation, firstly, the main body 1 of the pedestrian walkway is secured to the upper and lower sides of the steel box girder edge via the upper channel steel 3 and lower channel steel 4 on the connecting angle steel 2, thus setting the main body 1 of the pedestrian walkway on the steel box girder. Then, the positioning plate 6 is flipped onto the surface of the lower channel steel 4, and the magnetic block 9 at the end of the positioning plate 6 can be attracted to the lower channel steel 4, thereby fixing the positioning plate 6. At this time, the groove on the surface of the positioning plate 6 corresponds to the position of the slot 8 on the lower channel steel 4. Next, the protrusions at the rear ends of the insert plates 502 on both sides of the buckle channel steel 5 are inserted into the grooves on the surface of the positioning plate 6, and then the buckle is slid downwards. The channel steel 5, with its snap-fit ​​channel steel 5 positioned in the groove on the surface of the positioning plate 6, allows the plug-in plate 502 to be smoothly and accurately inserted into the slot 8 on the lower channel steel 4. Under the attraction of the strong magnet 7 inside the lower channel steel 4, the snap-fit ​​channel steel 5 can be firmly fixed in the lower channel steel 4. The upper part of the snap-fit ​​channel steel 5 can prevent the pedestrian walkway body 1 from moving horizontally, thus allowing the pedestrian walkway body 1 to be stably installed on the steel box girder. When disassembly is required, the snap-fit ​​channel steel 5 is taken out upwards, the positioning plate 6 is flipped from the surface of the lower channel steel 4 to one side of the lower channel steel 4, and then the pedestrian walkway body 1 is removed, thus completing a series of operations.

[0023] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A magnetic pedestrian walkway for installing steel box girders, comprising a pedestrian walkway body (1), wherein a connecting angle steel (2) is provided on one side of the pedestrian walkway body (1), and an upper channel steel (3) and a lower channel steel (4) respectively located above and below the edge of the steel box girder are fixedly connected to one side of the connecting angle steel (2), for erecting the pedestrian walkway body (1) on the steel box girder, characterized in that: The other end of the lower channel steel (4) extends to the inner side of the steel box girder. The portion of the lower channel steel (4) located on the inner side of the steel box girder is provided with a slot (8). The lower channel steel (4) is also provided with a snap-fit ​​channel steel (5) that is inserted and engaged through the slot (8). The snap-fit ​​channel steel (5) located on the inner side of the steel box girder restricts the horizontal movement of the pedestrian passage body (1). The area between the slots (8) inside the lower channel steel (4) is also provided with a strong magnet (7). The strong magnet (7) enables the snap-fit ​​channel steel (5) to be firmly attracted and fixed when inserted into the slot (8).

2. A magnetic pedestrian walkway for installing steel box girders according to claim 1, characterized in that: The buckle channel steel (5) is an inverted "U" shaped structure with a top plate (501) on the top and plug-in plates (502) on both sides. The top plate (501) is also equipped with a grip handle.

3. A magnetic pedestrian walkway for installing steel box girders according to claim 2, characterized in that: Two slots (8) are provided on the lower channel steel (4), and the direction of the slots (8) is perpendicular to the direction of the pedestrian passage main body (1) being inserted into the edge of the steel box beam. The shape and position of the slots (8) correspond to the shape and position of the plug plate (502), and the depth of the slots (8) is less than the height of the plug plate (502).

4. A magnetic pedestrian walkway for installing steel box girders according to claim 2, characterized in that: The other end of the lower channel steel (4) is also provided with a positioning plate (6), which is hinged to the lower channel steel (4) so ​​that the positioning plate (6) can be located on one side of the lower channel steel (4) or flipped to the surface of the lower channel steel (4).

5. A magnetic pedestrian walkway for installing steel box girders according to claim 4, characterized in that: The positioning plate (6) has two grooves on its surface, and the plug plate (502) has a protruding post on its rear end that can slide and cooperate with the grooves on the surface of the positioning plate (6). When the positioning plate (6) is flipped to the surface of the lower channel steel (4), the position of the groove on the surface of the positioning plate (6) corresponds to the position of the slot (8) on the lower channel steel (4).

6. A magnetic pedestrian walkway for installing steel box girders according to claim 5, characterized in that: The positioning plate (6) is also provided with a magnetic block (9) at its end. When the positioning plate (6) is flipped to the surface of the lower channel steel (4), the magnetic block (9) can be attracted to the surface of the lower channel steel (4).

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