Steel box girder structure frame

Abstract

The utility model discloses a steel box girder structure frame which comprises a bottom plate, supporting plates are fixedly connected to the two ends of the top of the bottom plate, the tops of the two supporting plates are fixedly connected with the same top plate, protective sleeves are arranged at the top ends and the bottom ends of the supporting plates, and sliding grooves allowing the protective sleeves to slide are formed in the two sides of the two ends of each supporting plate. The protective sleeve is slidably connected with the sliding groove through a sliding block, the inner side of the protective sleeve is attached to the outer side of the supporting plate, and the protective sleeve slides towards the two ends of the supporting plate so that the protective sleeve can shield the welding position between the supporting plate and the bottom plate and the welding position between the supporting plate and the top plate. The steel box girder structure frame slides towards the bottom plate and the top plate through the protective sleeves, the protective sleeves can protect the welding positions, the situation that the welding positions are damaged in the using process, and the stability of steel box girder connection is affected is avoided, and therefore the service life of the steel box girder structure frame is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel box girder frameworks, and particularly relates to a steel box girder structure framework. Background Art

[0002] A steel box girder is a box-shaped structural beam welded by steel plates, generally composed of a top plate, a bottom plate, webs, diaphragms, longitudinal diaphragms, stiffeners, etc. connected by full welding. The top plate is an orthotropic bridge deck composed of cover plates and longitudinal stiffeners. It has the advantages of high strength, large stiffness, good torsion resistance, etc., and is widely used in bridge engineering. The design and manufacture of steel box girders need to consider various factors, such as loads, spans, service environments, etc. During the manufacturing process, it is necessary to ensure the welding quality and dimensional accuracy to ensure the structural stability and safety of the steel box girder. The advantages of steel box girders include: being able to span longer distances, adapting to complex terrains and traffic demands; relatively convenient construction, which can shorten the project cycle; having good durability and maintainability.

[0003] In the prior art, Chinese Patent CN221276302U discloses a steel box girder of a steel structure bridge, which relates to the technical field of steel structure bridges; and the present utility model includes a steel box girder body. Symmetrically distributed support plates are fixedly arranged on the inner wall of the steel box girder body. External sliding grooves are fixedly arranged on the opposite sides of the two support plates. An installation plate is fixedly installed on the inner wall of the steel box girder body. Symmetrically distributed connecting rods are fixedly arranged on the outer side of the installation plate. In this utility model, structures such as support plates, external sliding grooves, threaded rods, threaded sliding plates, inserting rods and connecting rods are arranged to facilitate the connection of two steel box girder bodies, avoiding the problem of inconvenient connection, thereby achieving the purpose of convenient connection. In this utility model, structures such as rotation, a first bevel gear and a second bevel gear are arranged to make the installation process relatively simple, avoiding the problem of cumbersome installation, thereby achieving the purpose of simple installation.

[0004] However, in the actual application of the steel box girder of the steel structure bridge provided in the above technical solution, there are still disadvantages. For example, the steel box girder body is usually welded by a top plate, a bottom plate and webs, and the welding joints are prone to corrosion. During long-term use, the welding joints are corroded and damaged, affecting the connection stability of the steel box girder, thereby affecting the supporting capacity and service life of the steel box girder. Summary of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the present utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the present utility model.

[0006] To solve the problem of poor stability of the steel box girder structure frame proposed in the above background art, the present utility model adopts the following technical solutions.

[0007] A steel box girder structure frame includes a bottom plate. At both ends of the top of the bottom plate, support plates are fixedly connected. The same top plate is fixedly connected to the tops of the two support plates. The support plates are fixedly connected to the bottom plate and the top plate respectively by welding. At the top and bottom ends of the support plates, protective sleeves are slidably installed. The protective sleeves slide towards the two ends of the support plates, so that the welding joints between the support plates and the bottom plate and between the support plates and the top plate can be shielded by the protective sleeves.

[0008] Preferably, sliding grooves for the protective sleeves to slide are opened on both sides at both ends of the support plates. The protective sleeves are slidably connected to the sliding grooves through sliders.

[0009] Preferably, side plates are fixedly connected to both the bottom plate and the top plate. A pressing plate is movably arranged on the side plates, and the pressing plate is rotatably connected to the side plates through a round shaft.

[0010] Preferably, one end of the pressing plate is fixedly connected with an insertion plate. A notch corresponding to the position of the insertion plate is opened on the support plate. Rotating the pressing plate can make the insertion plate penetrate through the support plate through the notch.

[0011] Preferably, when the insertion plate passes through the notch, the end of the pressing plate fits against the outside of the support plate and the pressing plate presses against the protective sleeve. A bevel edge is arranged on one side of the protective sleeve close to the pressing plate. Through the bevel edge, the pressing plate fits against the bevel edge of the protective sleeve to limit the protective sleeve.

[0012] Preferably, a plurality of vertical plates are fixedly connected between the bottom plate and the top plate. Cross plates are fixedly connected to the plurality of vertical plates. When the insertion plate passes through the notch and abuts against the surface of the cross plate, round holes are arranged on both the cross plate and the insertion plate, and the relative fixation between the cross plate and the insertion plate is realized through the cooperation of a connecting column and a nut.

[0013] Preferably, a plurality of inclined rods are fixedly connected to both sides of the support plate. The plurality of inclined rods are evenly distributed with respect to the wide side of the top plate. The ends of the inclined rods are fixedly connected to the top plate to support the top plate through the inclined rods.

[0014] Preferably, a plurality of reinforcing cylinders are arranged on the bottom plate and the top plate. The reinforcing cylinders and the bottom plate and the top plate form an integral structure. A round hole is opened at the center of the reinforcing cylinder.

[0015] Preferably, a connecting rod is inserted into the reinforcing cylinder. Adjacent steel box girder structure frames can be spliced through the connecting rod.

[0016] Preferably, a connection groove is formed at the bottom of the bottom plate, and a plurality of connection holes penetrating the bottom plate are formed inside the connection groove. The plurality of connection holes are distributed in a rectangular array within the connection groove.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In the steel box girder structural framework of the present utility model, a protective sleeve is slidably assembled on the support plate, and the support plate is connected to the top plate and the bottom plate by welding. The sliding of the protective sleeve on the support plate can shield the welded joints, thereby protecting the welded joints from rusting and preventing the welded joints from being damaged during use, which affects the stability of the steel box girder structural framework, thus improving the service life. In addition, a pressing plate is provided in the steel box girder structural framework of the present utility model. The pressing plate can be rotated through a round shaft, so that the pressing plate leans against the support plate and presses the protective sleeve for limiting, preventing the protective sleeve from detaching from the welded joint. A notch is formed on the support plate of the present utility model for the insertion plate on the pressing plate to pass through and abut against the cross plate in the steel box girder structural framework, and the relative fixation between the insertion plate and the cross plate is realized through the cooperation of the connecting column and the nut, thereby ensuring the stability of the pressing plate for limiting the protective sleeve and enhancing the connection stability of the steel box girder structural framework and improving the supporting capacity of the steel box girder structural framework. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;

[0020] Figure 2 is the overall front view structure schematic diagram of the present utility model;

[0021] Figure 3 is the connection structure schematic diagram of the bottom plate and the support plate of the present utility model;

[0022] Figure 4 is the bottom view structure schematic diagram of the present utility model;

[0023] Figure 5 is the three-dimensional structure schematic diagram of the pressing plate of the present utility model;

[0024] Figure 6 is the three-dimensional structure schematic diagram of the bottom plate of the present utility model.

[0025] The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0026] 1, bottom plate; 2, support plate; 3, top plate; 4, protective sleeve; 5, sliding groove; 6, side plate; 7, pressing plate; 8, round shaft; 9, insertion plate; 10, connecting column; 11, notch; 12, vertical plate; 13, cross plate; 14, inclined rod; 15, reinforcing cylinder; 16, connecting rod; 17, connection groove; 18, connection hole. Detailed implementation manners

[0027] To make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings of the specification.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0029] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner of the present utility model. The "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. The present utility model provides the following embodiments.

[0030] Please refer to Figures 1-6 , which is a schematic structural diagram of a steel box girder structure framework in this embodiment. In this embodiment, the steel box girder structure framework includes a bottom plate 1. Both ends of the top of the bottom plate 1 are fixedly connected with support plates 2. The same top plate 3 is fixedly connected to the tops of the two support plates 2. Through the support plates 2, the top plate 3 and the bottom plate 1 can be welded, so that the support plates 2 are fixed to the top plate 3 and the bottom plate 1 to form a steel box girder structure framework.

[0031] In this embodiment, protective sleeves 4 are provided at both the top and bottom ends of the support plates 2. Sliding grooves 5 for the protective sleeves 4 to slide are opened on both sides at both ends of the support plates 2. The protective sleeves 4 are slidably connected to the sliding grooves 5 through sliders. The inner side of the protective sleeves 4 fits against the outer side of the support plates 2. The protective sleeves 4 can slide towards both ends of the support plates 2, so that the protective sleeves 4 shield and protect the welding joints between the support plates 2 and the bottom plate 1 and between the support plates 2 and the top plate 3, avoiding the problem of rusting at the welding joints and preventing damage to the welding joints during use from affecting the connection stability of the steel box girder structure framework, thereby improving the service life of the steel box girder structure framework.

[0032] As Figure 1 shown, in this embodiment, side plates 6 are fixedly connected to both sides of the bottom plate 1 and the top plate 3. A pressing plate 7 is provided on the side plates 6, and the pressing plate 7 is rotatably connected to the side plates 6 through a round shaft 8. By rotating the round shaft 8, the pressing plate 7 can be driven to rotate, so that the pressing plate 7 abuts against the support plates 2, and the pressing plate 7 presses the protective sleeves 4 to limit the protective sleeves 4 to prevent the protective sleeves 4 from disengaging from the welding joints.

[0033] As Figure 3 andFigure 5 As shown in the figure, in this embodiment, one end of the pressing plate 7 is fixedly connected with an inserting plate 9. A notch 11 corresponding to the position of the inserting plate 9 is formed on the supporting plate 2. Rotating the pressing plate 7 can make the inserting plate 9 pass through the notch 11. When the inserting plate 9 passes through the notch 11, the end of the pressing plate 7 abuts against the surface of the supporting plate 2. One side of the protective sleeve 4 close to the pressing plate 7 is provided with an inclined edge. When the pressing plate 7 abuts against the supporting plate 2, the surface of the pressing plate 7 presses against the inclined edge, thereby pressing and limiting the protective sleeve 4.

[0034] As Figure 1 , Figure 2 and Figure 4 As shown in the figure, further, a plurality of vertical plates 12 are fixedly connected between the bottom plate 1 and the top plate 3. A cross plate 13 is fixedly connected to the plurality of vertical plates 12, and the cross plate 13 and the vertical plates 12 are distributed in a cross shape. In this embodiment, round holes are formed in both the inserting plate 9 and the cross plate 13. A connecting column 10 is assembled in the round holes of the cross plate 13 and the inserting plate 9. Threads are provided at both ends of the connecting column 10. By assembling nuts with the threads of the connecting column 10, the inserting plate 9 can be fixed on the cross plate 13, thereby fixing the pressing plate 7 to facilitate the limiting of the protective sleeve 4. In addition, in this embodiment, by using the cooperation of the vertical plates 12 and the cross plate 13, the stability of the steel box girder structure framework can be further improved.

[0035] In this embodiment, a plurality of inclined rods 14 are fixedly connected to both sides of the supporting plate 2. The ends of the inclined rods 14 are fixedly connected to the top plate 3. The arrangement of the inclined rods 14 can enhance the supporting ability at both ends of the top plate 3, making it not easy for both ends of the top plate 3 to bend.

[0036] As Figure 1 , Figure 3 and Figure 6 As shown in the figure, in this embodiment, a plurality of reinforcing cylinders 15 are arranged on the bottom plate 1 and the top plate 3. The reinforcing cylinders 15 and the bottom plate 1 and the top plate 3 form an integral structure. A round hole is formed in the center of the reinforcing cylinder 15, and a connecting rod 16 is inserted into the round hole. By inserting the connecting rod 16 into the round hole, two adjacent steel box girder structure frameworks can be spliced, so that the two adjacent steel box girder structure frameworks form an integral structure, thereby improving the practicability of the steel box girder structure framework.

[0037] As Figure 4 As shown in the figure, in this embodiment, a connecting groove 17 is formed at the bottom of the bottom plate 1. A plurality of connecting holes 18 penetrating through the bottom plate 1 are formed inside the connecting groove 17. The plurality of connecting holes 18 are distributed in a rectangular array in the connecting groove 17. The connecting groove 17 can be used to install the bottom plate 1 on a concrete column. The concrete column is located in the connecting groove 17, and the steel bars in the concrete column pass through the connecting holes 18 in the connecting groove 17, thereby facilitating the fixing of the steel box girder structure framework in this embodiment.

[0038] Working principle: In the steel box girder structure framework of this embodiment, the support plate 2 in the steel box girder structure framework is welded to the top plate 3 and the bottom plate 1 to form the steel box girder structure framework. By using the cooperation of the chute 5 and the slider, the protective sleeves 4 at both ends of the support plate 2 can be slid towards the bottom plate 1 and the top plate 3 respectively, so that the protective sleeves 4 can shield the welded joints between the support plate 2 and the bottom plate 1 and between the support plate 2 and the top plate 3, playing a protective role, avoiding the problem of rust on the welded joints, preventing the welded joints from being damaged during use and affecting the stability of the connection of this steel box girder, thereby improving the service life of this steel box girder. In addition, in this embodiment, the pressing plate 7 can be driven to rotate by the round shaft 8, so that the pressing plate 7 abuts against the support plate 2, and the plug plate 9 on the pressing plate 7 passes through the notch 11 and is locked on the cross plate 13 through the cooperation of the nut and the connecting column 10 to limit the pressing plate 7. The pressing plate 7 presses the protective sleeve 4 to prevent the protective sleeve 4 from separating from the welded joint, enhancing the stability of the steel box girder structure framework and improving the supporting capacity of the steel box girder structure framework. By using the cooperation of the vertical plate 12 and the cross plate 13, the stability of the steel box girder structure framework in this embodiment can be further improved. The setting of the inclined rod 14 can enhance the supporting capacity at both ends of the top plate 3, making it not easy for both ends of the top plate 3 to bend. Through the setting of the reinforcing cylinder 15, multiple steel box girder structure frameworks can be spliced, thereby improving the practicability of the steel box girder structure framework. In addition, a connection groove 17 and a connection hole 18 are provided at the bottom of the steel box girder structure framework. The connection groove 17 can be used to install the bottom plate 1 and the concrete column, and the setting of the connection hole 18 facilitates the reinforcement bars in the concrete column to pass through, so as to facilitate the fixed installation of the steel box girder structure framework during use.

[0039] The above content further elaborates on the present utility model in combination with specific embodiments. It cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model pertains, without departing from the concept of the present utility model, several simple deductions or substitutions can still be made, which should all be regarded as falling within the protection scope determined by the claims submitted for the present utility model.

Claims

1. A steel box girder structural frame, comprising a bottom plate (1), wherein both ends of the top of the bottom plate (1) are fixedly connected to support plates (2), the tops of the two support plates (2) are fixedly connected to the same top plate (3), and the support plates (2) are fixedly connected to the bottom plate (1) and the top plate (3) respectively by welding, characterized in that: The top and bottom ends of the support plate (2) are both slidably mounted with protective sleeves (4), which slide toward both ends of the support plate (2) so that the protective sleeves (4) can cover the welding points between the support plate (2) and the bottom plate (1) and the welding points between the support plate (2) and the top plate (3).

2. The steel box girder structural frame according to claim 1, characterized in that: Both ends of the support plate (2) are provided with sliding grooves (5) for the protective sleeve (4) to slide, and the protective sleeve (4) and the sliding groove (5) are slidably connected via a sliding block.

3. The steel box girder structural frame according to claim 1, characterized in that: The bottom plate (1) and the top plate (3) are both fixedly connected with side plates (6), and a pressure plate (7) is movably provided on the side plate (6), and the pressure plate (7) is rotatably connected to the side plate (6) via a circular shaft (8).

4. The steel box girder structural frame according to claim 3, characterized in that: One end of the pressing plate (7) is fixedly connected to a plug plate (9), and a notch (11) corresponding to the position of the plug plate (9) is provided on the supporting plate (2). The pressing plate (7) can be rotated so that the plug plate (9) passes through the notch (11) and penetrates the supporting plate (2).

5. The steel box girder structural frame according to claim 4, characterized in that: When the insert plate (9) passes through the slot (11), the end of the pressing plate (7) fits against the outer side of the support plate (2) and the pressing plate (7) presses against the protective sleeve (4); a bevel is provided on one side of the protective sleeve (4) close to the pressing plate (7); the bevel is used to fit the pressing plate (7) and the bevel of the protective sleeve (4) to limit the position of the protective sleeve (4).

6. The steel box girder structural frame according to claim 5, characterized in that: A plurality of vertical plates (12) are fixedly connected between the bottom plate (1) and the top plate (3), and a horizontal plate (13) is fixedly connected to each of the vertical plates (12). When the plug plate (9) passes through the notch (11), it abuts against the surface of the horizontal plate (13). Circular holes are provided on the horizontal plate (13) and the plug plate (9), and the horizontal plate (13) and the plug plate (9) are relatively fixed by the mutual cooperation of the connecting column (10) and the nut.

7. The steel box girder structural frame according to claim 1, characterized in that: A plurality of inclined rods (14) are fixedly connected to both sides of the support plate (2); the plurality of inclined rods (14) are evenly distributed about the wide side of the top plate (3); the ends of the inclined rods (14) are fixedly connected to the top plate (3), and the top plate (3) is supported by the inclined rods (14).

8. The steel box girder structural frame according to claim 7, characterized in that: A plurality of reinforcing tubes (15) are arranged on the bottom plate (1) and the top plate (3); the reinforcing tubes (15) form an integrated structure with the bottom plate (1) and the top plate (3); a circular hole is opened at the center of the reinforcing tube (15).

9. The steel box girder structural frame according to claim 8, characterized in that: A connecting rod (16) is inserted into the reinforcing tube (15), and adjacent steel box beam structure frames can be spliced ​​together via the connecting rod (16).

10. The steel box girder structural frame according to any one of claims 1 to 9, characterized in that: The bottom of the base plate (1) is provided with a connection groove (17), and a plurality of connection holes (18) penetrating the base plate (1) are provided inside the connection groove (17). The plurality of connection holes (18) are arranged in the connection groove (17) and are distributed in a rectangular array.

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