Small-size steel member box girder

Abstract

The utility model discloses a small-size steel member box girder, and relates to the field of steel box girders, the small-size steel member box girder comprises a box girder body, three connecting mechanisms mounted on one side of the box girder body and three clamping assemblies mounted on the other side of the box girder body, and each connecting mechanism comprises a connecting seat fixedly connected to the box girder body; a clamping groove is formed in the outer wall of one side of the connecting base, openings are formed in the inner walls of the two sides of the clamping groove, limiting blocks are slidably connected to the inner walls of the two openings, a mounting cavity is formed in the connecting base, and a driving assembly for driving the limiting blocks to move is arranged on the inner wall of the mounting cavity. The connecting mechanisms and the clamping assemblies are arranged on the box girder bodies, the box girder bodies needing to be spliced are conveniently positioned through mutual clamping between the connecting mechanisms and the clamping assemblies, and the box girder bodies needing to be spliced are conveniently and stably connected and positioned through cooperation between the multiple connecting mechanisms and the clamping assemblies; the problem that positioning is inconvenient when an existing steel beam body is spliced is solved.

Description

Technical Field

[0001] This application relates to the field of steel box girders, and particularly to a small-sized steel member box girder. Background Art

[0002] A steel box girder, also known as a steel plate box girder, is a commonly used structural form for long-span bridges. It is generally used in bridges with larger spans. Because its shape resembles a box, it is called a steel box girder. Due to environmental restrictions in the construction of some bridges, such as directly above a subway station, the station is in the form of an underground platform, the distance from the top of the structure to the current ground is only 2.8m, and there is also an underground pedestrian passage from the station to the subway entrance below the structure. Therefore, considering the transportation conditions and construction conditions, it is determined to set up a falsework on-site and use the on-site falsework for the assembly of segmented steel structures, and then hoist the assembled steel structure as a whole.

[0003] During the installation of a small-sized steel box girder, the steel box girder needs to be spliced first. During the actual splicing process, the steel box girder needs to be positioned first and then welded. However, in the actual operation process, due to the relatively large volume of the steel box girder, it is inconvenient to position the steel box girder. Summary of the Utility Model

[0004] In order to solve the problem that it is inconvenient to position the existing steel box girder during splicing, this application provides a small-sized steel member box girder.

[0005] A small-sized steel member box girder provided by this application includes a box girder body, three connecting mechanisms installed on one side of the box girder body, and three clamping components installed on the other side of the box girder body. The connecting mechanism includes a connecting seat fixedly connected to the box girder body, and a clamping groove is formed on the outer wall of one side of the connecting seat. Openings are formed on both inner walls of the clamping groove, and limiting blocks are slidably connected to the inner walls of the two openings. An installation cavity is formed inside the connecting seat, and a driving component for driving the limiting block to move is arranged on the inner wall of the installation cavity.

[0006] With the above structure, by arranging a connecting mechanism and a clamping component on the box girder body, the clamping component is inserted into the clamping groove in the connecting mechanism, and then the driving component drives the limiting block to be inserted into the clamping component.

[0007] The driving component includes two rotating plates rotatably connected to the inner wall of the installation cavity, and the two limiting blocks are respectively fixedly connected to the two rotating plates.

[0008] With the above mechanism, the rotation of the rotating plate in the installation cavity can easily drive the limiting block to move, and controlling the movement of the limiting block can directly disassemble and assemble the clamping component.

[0009] The driving assembly further includes a screw rod rotatably connected to the inner wall of the installation cavity, and a threaded sleeve is screwed on the outer wall of the screw rod. Two driving plates are rotatably connected to the outer wall of the threaded sleeve, and one ends of the two driving plates are respectively rotatably connected to the two rotating plates.

[0010] With the above structure, when the screw rod in the installation cavity rotates, it directly drives the threaded sleeve to move. When the threaded sleeve moves, it directly pushes the rotating plate to rotate through the driving plate, thereby facilitating the adjustment of the position of the limiting block.

[0011] One side outer wall of the connecting seat is rotatably connected with a rotating part, and the cross-section of the rotating part is a regular hexagon. One end of the transmission shaft of the rotating part is fixedly connected to the screw rod.

[0012] With the above structure, the rotating part is provided to facilitate directly driving the screw rod to rotate. The cross-section of the rotating part is a regular hexagon, which is convenient for cooperating with a socket wrench for driving.

[0013] The clamping component includes a clamping seat fixedly connected to the box girder body, and a clamping plate is fixedly connected to one side outer wall of the clamping seat. The clamping plate is inserted into the clamping groove.

[0014] With the above structure, through the cooperation between the clamping plate and the clamping groove, it is convenient to connect and position the box girder bodies to be spliced with each other.

[0015] Limiting grooves are formed on both outer walls of the clamping plate, and the specifications of the limiting grooves match the specifications of the limiting blocks.

[0016] With the above structure, the rotating plate rotates to drive the limiting block to insert into the limiting groove, so as to conveniently fix the clamping plate in the clamping groove.

[0017] One end of the clamping plate is fixedly connected with a rubber pad, and the rubber pad is in contact with the inner wall of the clamping groove.

[0018] With the above structure, the rubber pad on the clamping plate is convenient for protecting the clamping plate and the clamping groove, and reducing the friction between the clamping plate and the clamping groove.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. By providing a connecting mechanism and a clamping component on the box girder body, the mutual clamping between the connecting mechanism and the clamping component facilitates the positioning of the box girder bodies to be assembled. The cooperation between multiple connecting mechanisms and clamping components facilitates the stable connection and positioning of the box girder bodies to be spliced, solving the problem that it is inconvenient to position when splicing existing steel beam bodies.

[0021] 2. The present application facilitates the driving of the limiting block to insert into the limiting groove in the clamping plate when the rotating plate in the driving component rotates by arranging the driving component in the connecting seat, thereby facilitating the connection and positioning of the box girder body to be spliced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a small-sized steel member box girder according to an embodiment of the present application;

[0023] Figure 2 FIG. 2 is a schematic diagram mainly showing the three-dimensional structure according to an embodiment of the present application;

[0024] Figure 3 FIG. 3 is a schematic diagram mainly showing the structure of the connecting mechanism according to an embodiment of the present application;

[0025] Figure 4 FIG. 4 is a schematic diagram mainly showing the sectional structure of the connecting mechanism according to an embodiment of the present application;

[0026] Figure 5 FIG. 5 is a schematic diagram mainly showing the structure of the clamping component according to an embodiment of the present application;

[0027] Reference numerals: 1, box girder body; 2, connecting mechanism; 3, clamping component; 4, connecting seat; 5, rotating part; 6, clamping groove; 7, installation cavity; 8, driving component; 9, screw; 10, threaded sleeve; 11, driving plate; 12, rotating plate; 13, limiting block; 14, clamping seat; 15, clamping plate; 16, limiting groove; 17, rubber pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following further elaborates on the present application in Figures 1 - 5 combination with the attached drawings.

[0029] An embodiment of the present application discloses a small-sized steel member box girder.

[0030] Referring to Figures 1 - 4 , a small-sized steel member box girder includes a box girder body 1, three connecting mechanisms 2 installed on one side of the box girder body 1, and three clamping components 3 installed on the other side of the box girder body 1, and the connecting mechanisms 2 and the clamping components 3 are in one-to-one correspondence;

[0031] During use, the falsework is set according to the actual situation on site, and the segmented steel structure is assembled using the on-site falsework. Subsequently, the assembled steel structure is hoisted integrally. The segmented assembly uses a 400t crawler crane, and the overall hoisting uses a double-crane lift of a 350t + 400t crawler crane. The hoisting form is high-low hoisting to avoid directly setting a support above the subway station structure, thereby avoiding inevitable damage to the underground station structure caused by excessive beam load during the construction process.

[0032] Referring to Figures 3 - 4, The connecting mechanism 2 for splicing the auxiliary box girder body 1 includes a connecting seat 4 fixedly connected to the box girder body 1, and a clamping groove 6 is provided on the outer wall of one side of the connecting seat 4. Openings are provided on both inner walls of the clamping groove 6, and limiting blocks 13 are slidably connected to the inner walls of the two openings. An installation cavity 7 is provided inside the connecting seat 4, and a driving component 8 for driving the limiting block 13 to move is arranged on the inner wall of the installation cavity 7;

[0033] The driving component 8 in the installation cavity 7 of the connecting seat 4 facilitates driving the limiting block 13 to act, and the setting of the limiting block 13 facilitates fixing the clamping component 3;

[0034] Refer to Figure 4 , The driving component 8 for adjusting the actions of the two limiting blocks 13 includes two rotating plates 12 rotatably connected to the inner wall of the installation cavity 7. The two limiting blocks 13 are respectively fixedly connected to the two rotating plates 12. The driving component 8 further includes a screw rod 9 rotatably connected to the inner wall of the installation cavity 7, and a threaded sleeve 10 is screwed on the outer wall of the screw rod 9. Two driving plates 11 are rotatably connected to the outer wall of the threaded sleeve 10, and one ends of the two driving plates 11 are respectively rotatably connected to the two rotating plates 12. A rotating part 5 is rotatably connected to the outer wall of one side of the connecting seat 4, and the cross-section of the rotating part 5 is a regular hexagon. One end of the transmission shaft of the rotating part 5 is fixedly connected to the screw rod 9;

[0035] The rotation of the rotating plate 12 in the installation cavity 7 facilitates driving the limiting block 13 to move. Controlling the movement of the limiting block 13 facilitates directly disassembling and assembling the clamping component 3. When the screw rod 9 rotates, it directly drives the threaded sleeve 10 to move. When the threaded sleeve 10 moves, it directly pushes the rotating plate 12 to rotate through the driving plate 11, thereby facilitating adjusting the position of the limiting block 13. The setting of the rotating part 5 facilitates directly driving the screw rod 9 to rotate. The cross-section of the rotating part 5 is a regular hexagon, which facilitates driving with a socket wrench.

[0036] Refer to Figures 2 - 5 , The clamping component 3 cooperating with the connecting mechanism 2 includes a clamping seat 14 fixedly connected to the box girder body 1, and a clamping plate 15 is fixedly connected to the outer wall of one side of the clamping seat 14. The clamping plate 15 is inserted into the clamping groove 6. Limiting grooves 16 are provided on both outer walls of the clamping plate 15, and the specifications of the limiting grooves 16 match the specifications of the limiting blocks 13. A rubber pad 17 is fixedly connected to one end of the clamping plate 15, and the rubber pad 17 is in contact with the inner wall of the clamping groove 6.

[0037] During use, through the cooperation between the clamping plate 15 and the clamping groove 6, it is convenient to connect and position the spliced box girder bodies 1. The rotation of the rotating plate 12 drives the limiting block 13 to insert into the limiting groove 16, thereby facilitating fixing the clamping plate 15 in the clamping groove 6. The rubber pad 17 on the clamping plate 15 facilitates protecting the clamping plate 15 and the clamping groove 6, reducing the friction between the clamping plate 15 and the clamping groove 6.

[0038] The implementation principle of a small-sized steel member box girder in an embodiment of this application is as follows: During splicing, the two box girder bodies 1 to be spliced are brought closer to each other. When the clamping plate 15 in the clamping assembly 3 is inserted into the clamping groove 6, the rubber pad 17 is pressed against the inner wall of the clamping groove 6. At this time, the rotating part 5 is rotated. When the rotating part 5 rotates, it drives the screw rod 9 to rotate. When the screw rod 9 rotates, it directly drives the threaded sleeve 10 to move. When the threaded sleeve 10 moves towards the clamping groove 6, it drives the rotating plate 12 to rotate through the driving plate 11. When the rotating plate 12 rotates, it directly drives the limiting block 13 to be inserted into the limiting groove 16 on the clamping plate 15, thereby facilitating the connection and assembly of the two box girder bodies 1.

[0039] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A small-sized steel member box girder, comprising a box girder body (1), three connecting mechanisms (2) installed on one side of the box girder body (1), and three clamping components (3) installed on the other side of the box girder body (1), characterized in that: The connecting mechanism (2) includes a connecting seat (4) fixedly connected to the box girder body (1), and a clamping groove (6) is formed on the outer wall of one side of the connecting seat (4). Openings are formed on the inner walls of both sides of the clamping groove (6), and limiting blocks (13) are slidably connected to the inner walls of the two openings. An installation cavity (7) is formed inside the connecting seat (4), and a driving component (8) for driving the limiting block (13) to move is arranged on the inner wall of the installation cavity (7).

2. The box girder of a small-sized steel member according to claim 1, characterized in that: The driving component (8) includes two rotating plates (12) rotatably connected to the inner wall of the installation cavity (7), and the two limiting blocks (13) are respectively fixedly connected to the two rotating plates (12).

3. A small-sized steel member box girder according to claim 2, characterized in that: The driving component (8) further includes a screw rod (9) rotatably connected to the inner wall of the installation cavity (7), and a threaded sleeve (10) is screwed on the outer wall of the screw rod (9). Two driving plates (11) are rotatably connected to the outer wall of the threaded sleeve (10), and one ends of the two driving plates (11) are respectively rotatably connected to the two rotating plates (12).

4. A small-sized steel member box girder according to claim 3, characterized in that: A rotating part (5) is rotatably connected to the outer wall of one side of the connecting seat (4), and the cross section of the rotating part (5) is a regular hexagon. One end of the transmission shaft of the rotating part (5) is fixedly connected to the screw rod (9).

5. The small-sized steel member box girder according to claim 4, characterized in that: The clamping component (3) includes a clamping seat (14) fixedly connected to the box girder body (1), and a clamping plate (15) is fixedly connected to the outer wall of one side of the clamping seat (14). The clamping plate (15) is inserted into the clamping groove (6).

6. The small-sized steel member box girder according to claim 5, characterized in that: Limiting grooves (16) are formed on the outer walls of both sides of the clamping plate (15), and the specifications of the limiting grooves (16) are matched with the specifications of the limiting blocks (13).

7. A small-sized steel member box girder according to claim 6, characterized in that: One end of the clamping plate (15) is fixedly connected with a rubber pad (17), and the rubber pad (17) is in contact with the inner wall of the clamping groove (6).

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