Variable-width multi-box steel box girder

Abstract

This invention relates to a variable-width multi-box steel box girder, wherein one end of two main box girders is widened, and an intermediate box girder is provided between the widened portions of the two main box girders. Multiple connecting components are provided between the two sides of the intermediate box girder and the two main box girders, and between the horizontal portions of the two main box girders. Each connecting component includes a connecting plate, with protruding plates fixedly connected to both sides of the connecting plate. Two protruding plates are respectively inserted into one side of the two main box girders, and both sides of the connecting plate are fixed to the two main box girders by bolts. A connecting mechanism is provided between the tops of the two main box girders, and cantilever mechanisms are provided on both sides of the two main box girders. This invention solves the problems of existing steel box girders, which are mostly installed by welding, resulting in a large workload and high cost, and also failing to provide warnings when the steel box girder shifts during use.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of steel box girder, and particularly relates to a variable-width multi-box steel box girder. BACKGROUND

[0002] The steel box girder, also known as a steel plate box girder, is a common structure form of a large-span bridge. It is generally used in a bridge with a large span, and is called a steel box girder because of its appearance like a box. The steel box girder is generally connected by a top plate, a bottom plate, a web plate, a transverse diaphragm, a longitudinal diaphragm and a stiffening rib, wherein the top plate is an orthotropic bridge deck plate composed of a cover plate and a longitudinal stiffening rib.

[0003] The variable-width steel box girder, as its name implies, is widened at some special positions. The traditional steel box girder is mostly completed by welding during installation, which is labor-intensive and has high investment cost. Meanwhile, the steel box girder cannot remind people when it deviates during use. In view of the above problems, the present application provides a variable-width multi-box steel box girder. SUMMARY

[0004] The application provides a variable-width multi-box steel box girder, which solves the problems in the prior art that the steel box girder is mostly completed by welding during installation, which is labor-intensive and has high investment cost, and the steel box girder cannot remind people when it deviates during use.

[0005] The application provides the following technical scheme:

[0006] A variable-width multi-box steel box girder comprises:

[0007] Two main box girders, one end of each main box girder is in a variable-width state, an intermediate box girder is arranged between the variable-width portions of the two main box girders, and a plurality of connecting assemblies are arranged between the two sides of the intermediate box girder and the two main box girders and between the horizontal portions of the two main box girders;

[0008] The connecting assembly comprises a connecting plate, and protruding plates are fixedly connected to the two sides of the connecting plate, the two protruding plates are respectively inserted into one side of the two main box girders, and the two sides of the connecting plate are fixed to the two main box girders by bolts;

[0009] A connecting mechanism is arranged between the top portions of the two main box girders, and cantilever mechanisms are arranged on the two sides of the two main box girders.

[0010] Further, the connecting mechanism comprises a top plate arranged above the plurality of connecting plates, a plurality of trapezoidal plates used in cooperation with the connecting plates are fixedly connected to the bottom of the top plate, a plurality of fixing bolts are fixed to the bottom of each trapezoidal plate, the bottom of each fixing bolt penetrates through the top of the connecting plate, and a nut for fixing the trapezoidal plate is threadedly connected to the bottom of each fixing bolt.

[0011] Further, the cantilever mechanism comprises a cantilever plate arranged at one side of the main box girder, the bottom of the cantilever plate is fixedly connected with a plurality of supporting plates, one side of the main box girder is fixedly connected with a plurality of groups of positioning sheets used in cooperation with the supporting plates, each group of the positioning sheets comprises two positioning sheets, and the plurality of supporting plates are fixedly connected with the plurality of groups of positioning sheets through bolts.

[0012] Further, one end of each of the supporting plates is fixedly connected with an extension block, and the extension block is inserted into the main box girder.

[0013] Further, the bottom of the main box girder is provided with a support, the top of the support is provided with a gasket for supporting the main box girder, and the two sides of the support are provided with alarm mechanisms for alarming when the main box girder moves.

[0014] Further, the alarm mechanism comprises a mounting plate fixedly connected to one side of the support, a light-shielding box fixedly connected to one side of the mounting plate, a transparent box with an open top fixedly connected to the bottom of the light-shielding box, a diaphragm fixedly connected between the inner walls of the light-shielding box, red ink on one side of the diaphragm, a plurality of through holes formed in the bottom of the light-shielding box, the through holes being located on the other side of the diaphragm, a plug rod inserted through one side of the light-shielding box, the plug rod being tapered at one end, the plug rod being slidably inserted through one side of the light-shielding box, a spring fixedly connected to the circumference of the plug rod, and the other end of the spring being fixedly connected to the light-shielding box.

[0015] Further, one end of each of the plug rods is provided with an arc plate fixedly connected to the main box girder.

[0016] Further, one end of each of the plug rods is provided with an arc plate fixedly connected to the main box girder.

[0017] Further, the inner walls of the main box girder and the intermediate box girder are fixedly connected with filling frames, and the two sides of the filling frames are fixedly connected with a plurality of reinforcing plates.

[0018] The beneficial effects of the present application are as follows:

[0019] 1. The variable-width multi-box steel box girder disclosed in the present application can be assembled between the main box girder, the connecting mechanism and the cantilever mechanism, so that the steel box girder can be assembled through bolts during installation, reducing construction cost and improving installation efficiency.

[0020] 2. The variable-width multi-box steel box girder disclosed in the present application can be connected and fixed by the intermediate box girder on both sides of the main box girder at the variable-width position of the steel box girder through the cooperation of the main box girder, the intermediate box girder and the connecting assembly, thereby improving the installation stability of the variable-width position and improving the load capacity.

[0021] 3. The variable-width multi-box steel box girder disclosed in this invention, by installing alarm mechanisms on both sides of the support, allows the diaphragm in the alarm mechanism to be punctured by the insertion rod after the main box girder on the support is displaced, thereby causing the red liquid inside to fall into the transparent box, which is convenient for inspection personnel to observe.

[0022] 4. The variable-width multi-box steel box girder disclosed in this invention can be assembled with bolts, reducing construction costs and improving installation efficiency. At the same time, the middle box girder is used to connect and fix the main box girders on both sides, thereby improving the installation stability at the variable-width position and increasing the load-bearing capacity. After the main box girder on the support is displaced, the diaphragm in the alarm mechanism can be punctured by the insertion rod, allowing the red liquid inside to fall into the transparent box for easy observation by inspection personnel.

[0023] Other advantages, objectives, and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination, or may be learned from practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0024] To make the objectives, technical solutions, and advantages of the present invention clearer, the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein:

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a variable-width multi-box steel box girder from a first perspective according to the present invention;

[0026] Figure 2 This is a three-dimensional structural schematic diagram of a variable-width multi-box steel box girder from a second perspective according to the present invention;

[0027] Figure 3 This is an exploded structural diagram showing the connection between the cantilever mechanism and the main box girder of a variable-width multi-box steel box girder according to the present invention.

[0028] Figure 4 This is a schematic diagram of the connection mechanism and the connection structure of the main box girder of the variable-width multi-box steel box girder according to the present invention;

[0029] Figure 5 This is a schematic diagram of the installation structure of the alarm mechanism for a variable-width multi-box steel box girder according to the present invention.

[0030] Reference numerals: 1. Main box girder; 2. Cantilever mechanism; 3. Connecting mechanism; 4. Alarm mechanism; 5. Intermediate box girder; 6. Connecting assembly; 7. Filler frame; 8. Reinforcing plate; 9. Cantilever plate; 10. Support plate; 11. Extension block; 12. Positioning piece; 13. Top plate; 14. Trapezoidal plate; 15. Connecting plate; 16. Protruding plate; 17. Fixing bolt; 18. Nut; 19. Support; 20. Washer; 21. Mounting plate; 22. Light-shielding box; 23. Transparent box; 24. Diaphragm; 25. Perforation; 26. Insert rod; 27. Spring; 28. Curved panel. Detailed Implementation

[0031] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0033] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "front," and "rear" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] Reference Figures 1-5A variable-width multi-box steel box girder is provided, wherein one end of the two main box girders 1 is in a variable-width state, and an intermediate box girder 5 is provided between the variable-width parts of the two main box girders 1. Multiple connecting components 6 are provided between the two sides of the intermediate box girder 5 and the two main box girders 1, and between the horizontal parts of the two main box girders 1. Through the cooperative use of the main box girders 1, the intermediate box girder 5 and the connecting components 6, the intermediate box girder 5 can be used to connect and fix the two main box girders 1 at the variable-width position of the steel box girder, thereby improving the installation stability at the variable-width position and improving the load-bearing capacity.

[0035] The connecting assembly 6 includes a connecting plate 15, with protruding plates 16 fixedly connected to both sides of the connecting plate 15. The two protruding plates 16 are respectively inserted into one side of the two main box beams 1, and the two sides of the connecting plate 15 are respectively fixed to the two main box beams 1 by bolts.

[0036] A connecting mechanism 3 is provided between the tops of the two main box beams 1, and a cantilever mechanism 2 is provided on both sides of the two main box beams 1.

[0037] Reference Figure 4 The connecting mechanism 3 includes a top plate 13, which is positioned above multiple connecting plates 15. Multiple trapezoidal plates 14 that cooperate with the connecting plates 15 are fixedly connected to the bottom of the top plate 13. Multiple fixing bolts 17 are fixed to the bottom of each trapezoidal plate 14. The bottom of each fixing bolt 17 passes through the top of the connecting plate 15, and each fixing bolt 17 is threaded with a nut 18 for fixing the trapezoidal plate 14. The assembly configuration between the main box girder 1, the connecting mechanism 3, and the cantilever mechanism 2 allows the steel box girder to be assembled with bolts during installation, reducing construction costs and improving installation efficiency.

[0038] Reference Figure 3 The cantilever mechanism 2 includes a cantilever plate 9, which is disposed on one side of the main box girder 1. Multiple support plates 10 are fixedly connected to the bottom of the cantilever plate 9. Multiple sets of positioning plates 12 that cooperate with the support plates 10 are fixedly connected to one side of the main box girder 1. Each set of positioning plates 12 consists of two pieces. The multiple support plates 10 are fixed to the multiple sets of positioning plates 12 by bolts. When installing the cantilever plate 9, the support plate 10 is inserted into the two positioning plates 12 and extended into the main box girder 1, and then fixed by bolts. One end of each support plate 10 is fixedly connected to an extension block 11, which is inserted into the main box girder 1.

[0039] The bottom of the main box girder 1 is provided with a support 19, and the top of the support 19 is provided with a pad 20 for supporting the main box girder 1. The pad 20 is made of rubber sheet and steel sheet in an alternating layer, which is an existing finished product used for shock absorption. Both sides of the support 19 are provided with an alarm mechanism 4 for alarming when the main box girder 1 moves.

[0040] Reference Figure 5The alarm mechanism 4 includes a mounting plate 21, which is fixedly connected to one side of the support 19. A light-shielding box 22 is fixedly connected to one side of the mounting plate 21. A transparent box 23 with an open top is fixedly connected to the bottom of the light-shielding box 22. A diaphragm 24 is fixedly connected between the inner walls of the light-shielding box 22. One side of the diaphragm 24 is provided with red ink. The bottom of the light-shielding box 22 has multiple through holes 25 located on the other side of the diaphragm 24. A through rod 26 is inserted into one side of the mounting plate 21. One end of the rod 26 is tapered and slides through the light-shielding box 23. On one side of the light box 22, a spring 27 is fixedly connected to the circumference of the insertion rod 26. The other end of the spring 27 is fixed to the light-shielding box 22. When the main box beam 1 moves left and right, the insertion rod 26 is pushed by the arc panel 28 to pierce the diaphragm 24, causing the red ink inside to flow out. Then, it flows into the transparent box 23 through the perforation 25, making it easy to find during inspection. One end of the insertion rod 26 is equipped with an arc panel 28, and the arc panel 28 is fixed to the main box beam 1. The end of the insertion rod 26 near the arc panel 28 is rotatably connected to a roller, which facilitates the movement of the insertion rod 26 by the arc panel 28.

[0041] Reference Figure 2 The inner walls of the main box girder 1 and the intermediate box girder 5 are fixedly connected with infill frames 7, and multiple reinforcing plates 8 are fixedly connected to both sides of the infill frames 7. The stability and load-bearing capacity of the main box girder 1 and the intermediate box girder 5 are increased by the infill frames 7 and the reinforcing plates 8.

[0042] During the installation of the variable-width multi-box steel box girder, multiple connecting plates 15 are inserted between the two main box girders 1, and then the connecting plates 15 are fixed with bolts. Then the main box girder 1 is hoisted onto the installed support 19. After the installation is completed, the top plate 13 is hoisted onto the multiple connecting plates 15, and the fixing bolts 17 at the bottom of the trapezoidal plate 14 are inserted into the connecting plates 15 and then fixed with nuts 18, thereby completing the fixing of the top plate 13. During the installation of the cantilever plate 9, the support plate 10 is inserted into the two positioning pieces 12 and extended into the main box girder 1, and then fixed with bolts.

[0043] The alarm mechanism 4 is installed on both sides of the support 19. After installation, when the main box beam 1 moves left and right, the diaphragm 24 is pierced by the insert rod 26 pushed by the arc panel 28, so that the red ink inside flows out and then flows into the transparent box 23 through the perforation 25, making it easy to find during inspection. When the main box beam 1 moves back and forth, the arc surface of the arc panel 28 is used to push the insert rod 26, and the alarm is triggered in the same way.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A variable-width multi-box steel box girder, characterized in that, include: Two main box beams (1), one end of the two main box beams (1) is widened, and an intermediate box beam (5) is provided between the widened part of the two main box beams (1). Multiple connecting components (6) are provided between the two sides of the intermediate box beam (5) and the two main box beams (1) and between the horizontal part of the two main box beams (1). The connecting assembly (6) includes a connecting plate (15), and protruding plates (16) are fixedly connected to both sides of the connecting plate (15). The two protruding plates (16) are respectively inserted into one side of the two main box beams (1). The two sides of the connecting plate (15) are respectively fixed to the two main box beams (1) by bolts. A connecting mechanism (3) is provided between the tops of the two main box beams (1), and a cantilever mechanism (2) is provided on both sides of the two main box beams (1). The connecting mechanism (3) includes a top plate (13), which is disposed above a plurality of connecting plates (15). The bottom of the top plate (13) is fixedly connected to a plurality of trapezoidal plates (14) that cooperate with the connecting plates (15). The bottom of each trapezoidal plate (14) is fixed with a plurality of fixing bolts (17). The bottom of each fixing bolt (17) passes through the top of the connecting plate (15). The bottom of each fixing bolt (17) is threaded with a nut (18) for fixing the trapezoidal plate (14). The cantilever mechanism (2) includes a cantilever plate (9), which is disposed on one side of the main box girder (1). Multiple support plates (10) are fixedly connected to the bottom of the cantilever plate (9). Multiple sets of positioning plates (12) that cooperate with the support plates (10) are fixedly connected to one side of the main box girder (1). Each set of positioning plates (12) consists of two pieces. The multiple support plates (10) are respectively fixed to the multiple sets of positioning plates (12) by bolts.

2. The variable-width multi-box steel box girder according to claim 1, characterized in that, One end of each support plate (10) is fixedly connected to an extension block (11), and each extension block (11) is inserted into the main box girder (1).

3. A variable-width multi-box steel box girder according to claim 1, characterized in that, The bottom of the main box girder (1) is provided with a support (19), and the top of the support (19) is provided with a pad (20) for supporting the main box girder (1). Both sides of the support (19) are provided with an alarm mechanism (4) for alarming when the main box girder (1) moves.

4. A variable-width multi-box steel box girder according to claim 3, characterized in that, The alarm mechanism (4) includes a mounting plate (21), which is fixedly connected to one side of the support (19). A light shielding box (22) is fixedly connected to one side of the mounting plate (21). A transparent box (23) with an open top is fixedly connected to the bottom of the light shielding box (22). A diaphragm (24) is fixedly connected between the inner walls of the light shielding box (22). A red ink is provided on one side of the diaphragm (24). A plurality of through holes (25) are opened at the bottom of the light shielding box (22). The through holes (25) are located on the other side of the diaphragm (24). A through rod (26) is inserted into one side of the mounting plate (21). One end of the rod (26) is conical. The rod (26) slides through one side of the light shielding box (22). A spring (27) is fixedly connected to the circumference of the rod (26). The other end of the spring (27) is fixed to the light shielding box (22).

5. A variable-width multi-box steel box girder according to claim 4, characterized in that, One end of each of the insert rods (26) is provided with an arc panel (28), and the arc panel (28) is fixed to the main box girder (1).

6. A variable-width multi-box steel box girder according to claim 5, characterized in that, Each of the insert rods (26) has a roller rotatably connected to one end near the arc panel (28).

7. A variable-width multi-box steel box girder according to claim 1, characterized in that, The inner walls of the main box girder (1) and the intermediate box girder (5) are fixedly connected with filling frames (7), and multiple reinforcing plates (8) are fixedly connected to both sides of the filling frames (7).

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