Beam bottom protective cover for overpass existing high-speed steel-concrete composite beam

Abstract

The utility model provides a beam bottom protective cover for an overpass existing high-speed steel-concrete composite beam, which belongs to the technical field of beam bottom protection and comprises a pair of rod bodies, and a plurality of inserting rods are fixedly arranged on the rod bodies along the length direction; the number of the fixing cylinders is multiple, the fixing cylinders are fixedly arranged on the adjacent side walls of the adjacent steel box girders in the length direction of the steel box girders, and the inserting rods are correspondingly matched with the fixing cylinders in an inserting mode; the steel wire mesh is fixedly connected between the pair of rod bodies, the steel wire mesh is arranged in an upper arch shape, a closing plate is hinged to each mesh opening of the steel wire mesh, and the closing plates are used for closing the mesh openings of the steel wire mesh; the multiple sets of supporting pieces are arranged in the length direction of the rod bodies and located between the pair of rod bodies, and the supporting pieces are located below the steel wire gauze and used for supporting the steel wire gauze. According to the utility model, the safety problem caused by the falling of materials or tools during the construction of an overpass existing high-speed steel-concrete composite beam bridge can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of beam bottom protection, and particularly relates to a beam bottom protective cover for a steel-concrete composite beam spanning an existing expressway. Background Art

[0002] A steel-concrete composite beam spanning an existing expressway refers to a new bridge or structure built above the steel-concrete composite beam bridge of an existing expressway. This overpass design is used to increase traffic capacity, connect new roads or transform the existing traffic network. During the construction process, safety must be ensured to avoid damage to the existing bridge and properly handle traffic interference.

[0003] During the construction of a steel-concrete composite beam bridge spanning an existing expressway, the gap between adjacent beam bodies becomes a potential safety hazard. Since the gap is above a busy expressway, if construction materials or tools accidentally fall during construction, they may directly fall into the gap and onto the expressway, seriously threatening the safety of passing vehicles. Such falling accidents can not only cause traffic accidents, but also lead to casualties and property losses. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a beam bottom protective cover for a steel-concrete composite beam spanning an existing expressway, which can avoid safety problems caused by the falling of materials or tools during the construction of a steel-concrete composite beam bridge spanning an existing expressway.

[0005] The embodiment of the utility model is realized by the following technical solutions: A beam bottom protective cover for a steel-concrete composite beam spanning an existing expressway, comprising: a rod body, a pair of which are provided, and a plurality of insertion rods are fixedly arranged along the length direction of the rod body;

[0006] Fixed cylinders, the number of which is multiple, are fixedly arranged on adjacent side walls of adjacent steel box girders along the length direction of the steel box girder, and the insertion rods are correspondingly inserted and matched with the fixed cylinders;

[0007] A wire mesh, which is fixedly connected between a pair of the rod bodies, is arranged in an upward arch shape, and a closing plate is hingedly arranged at each mesh opening of the wire mesh, and the closing plate is used to close the mesh opening of the wire mesh;

[0008] Support members, multiple groups of which are arranged along the length direction of the rod body and are located between a pair of the rod bodies, and the support members are located below the wire mesh and are used to support the wire mesh.

[0009] Further, a torsion spring is arranged at the hinge joint of the closing plate and the wire mesh, and the torsion spring is used to drive the closing plate to keep closing the mesh opening of the wire mesh.

[0010] Further, a rubber pad is fixedly arranged on the top wall of the closing plate.

[0011] Further, the closing plate comprises a plurality of series plates which are hinged to each other, and the direction of the hinge axis between the plurality of series plates is the same as the direction of the hinge axis of the closing plate on the wire mesh.

[0012] Further, the support member comprises a first strut and a second strut, the first strut and the second strut are connected to each other and are respectively hinged on the two side rod bodies.

[0013] Further, a plurality of springs are arranged on the top walls of the first strut and the second strut. One end of each spring on the first strut and the second strut is fixedly connected to the corresponding first strut and second strut, and the other ends are all fixedly connected to the wire mesh together.

[0014] Further, reinforcing rods are fixedly arranged between all the first struts and between the second struts.

[0015] Further, a notch groove is formed at the insertion end of the insertion rod, the notch groove is arranged in a V shape, and a flaring rod is fixedly arranged on the inner wall of the fixed cylinder, and the flaring rod is arranged opposite to the notch groove.

[0016] Further, a buffer mesh cylinder is fixedly arranged above the rod body, the buffer mesh cylinder is arranged along the length direction of the rod body, and the buffer mesh cylinder is attached to the side wall of the steel box girder.

[0017] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0018] 1. By installing a wire mesh on the adjacent side walls of adjacent steel box girders, the mesh opening of the wire mesh can effectively prevent materials or tools from falling below the highway due to the presence of the closing plate. Its support member can improve the support strength of the wire mesh and prevent the wire mesh from collapsing. Therefore, during the construction of the steel-concrete composite beam bridge spanning the existing highway, it can effectively avoid safety problems caused by the falling of materials or tools. At the same time, the insertion rod and the fixed cylinder of the rod body can facilitate the installation of the wire mesh.

[0019] 2. By arranging a plurality of springs on the top walls of the first strut and the second strut and connecting the springs to the wire mesh, the springs can play a buffering role to prevent the heavy object from directly acting on the first strut, the second strut and the wire mesh after falling onto the wire mesh, thereby causing damage to the first strut, the second strut and the wire mesh. Description of the Drawings

[0020] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0021] Figure 1 It is a schematic diagram of the overall structure of the upper-crossing existing high-speed steel-concrete composite beam bottom protective cover provided by the present utility model;

[0022] Figure 2 It is a schematic diagram of a partial structure of the present utility model aiming to show the wire mesh, spring and support member;

[0023] Figure 3 It is a schematic diagram of a partial structure of the present utility model aiming to show the support member, rod body and wire mesh;

[0024] Figure 4 It is a schematic diagram of the structure of the wire mesh and the closing plate of the present utility model;

[0025] Figure 5 For the present utility model Figure 4 An enlarged view of part A in;

[0026] Figure 6 It is a schematic diagram of the structure of the fixing cylinder, notch groove and inserting rod of the present utility model;

[0027] Icon: 1 - steel box girder, 11 - fixing cylinder, 111 - flared rod, 2 - rod body, 21 - inserting rod, 211 - notch groove, 22 - buffer mesh cylinder, 3 - wire mesh, 31 - mesh opening, 32 - closing plate, 321 - series plate, 322 - rotating rod, 323 - torsion spring, 4 - support member, 41 - first support rod, 412 - perforation, 42 - second support rod, 5 - rubber pad, 6 - spring, 7 - strengthening rod. Specific embodiments

[0028] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the attached drawings here can be arranged and designed in various different configurations.

[0029] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts fall within the scope of protection of the present invention.

[0030] Embodiment

[0031] The following is further described in conjunction with specific embodiments. Refer to Figures 1 - 6 As shown, the present invention is an upper-crossing existing high-speed steel-concrete composite beam bottom protective cover, including a rod body 2. The cross-section of the rod body 2 is square, and there is a pair of rod bodies 2 between two adjacent steel box girders 1. A plurality of insertion rods 21 are welded to the rod body 2 along the length direction. Among them, the number of fixed cylinders 11 is multiple, and the fixed cylinders 11 are welded to the adjacent side walls of the adjacent steel box girders 1 along the length direction of the steel box girders 1. The insertion rods 21 are correspondingly inserted and matched with the fixed cylinders 11. By aligning and directly inserting the insertion rods 21 on the rod body 2 into the fixed cylinders 11, the rod body 2 can be fixed.

[0032] The wire mesh 3 is fixedly connected between a pair of rod bodies 2. The wire mesh 3 is arranged in an upward arch shape. The arched wire mesh 3 can guide the dropped objects to both sides of the wire mesh 3, preventing the dropped objects from concentrating in the middle of the wire mesh 3, resulting in stress concentration at the middle position of the wire mesh 3 and causing deformation and damage at this position. A closing plate 32 is hingedly arranged at each mesh opening 31 of the wire mesh 3. The closing plate 32 is used to close the mesh opening 31 of the wire mesh 3. A buffer mesh cylinder 22 is fixedly installed above the rod body 2. The buffer mesh cylinder 22 is arranged along the length direction of the rod body 2 and fits on the side wall of the steel box girder 1. The buffer mesh cylinder 22 can effectively buffer the dropped objects and prevent impact damage to the steel box girder 1.

[0033] Refer to Figure 4 and Figure 5 At the hinge of the closing plate 32 and the wire mesh 3, a torsion spring 323 is provided. The torsion spring 323 is used to drive the closing plate 32 to keep the mesh opening 31 of the wire mesh 3 closed. Specifically, a rotating rod 322 is rotatably penetrated through one end of the closing plate 32. The rotating rod 322 is fixedly connected to the position of the mesh opening 31 of the wire mesh 3. The torsion spring 323 is sleeved on the rotating rod 322. One end of the torsion spring 323 is fixedly connected to the wire mesh 3, and the other end is fixedly connected to the closing plate 32. A rubber pad 5 is adhesively bonded to the top wall of the closing plate 32. The rubber pad 5 can play a buffering role and protect the closing plate 32 and the wire mesh 3 from being damaged.

[0034] Refer to Figure 4 and Figure 5, in order to facilitate the opening of the closing plate 32 and the folding of the wire mesh 3, and at the same time adapt to the arched shape of the wire mesh 3, the closing plate 32 is composed of multiple series-connected plates 321. The multiple series-connected plates 321 are hinged to each other. The direction of the hinge axis between the multiple series-connected plates 321 is the same as the direction of the hinge axis of the closing plate 32 on the wire mesh 3.

[0035] Referring to Figure 2 and Figure 3 , in order to facilitate the support of the wire mesh 3 and at the same time adapt to the arched shape of the wire mesh 3, multiple groups of support members 4 are arranged along the length direction of the rod body 2 and are located between a pair of rod bodies 2. The support member 4 is composed of a first strut 41 and a second strut 42. The first strut 41 and the second strut 42 are connected to each other and are respectively hinged to the two side rod bodies 2. The direction of the hinge axis at the ends of the first strut 41 and the second strut 42 is the same as the length direction of the rod body 2. Reinforcing rods 7 are installed between all the first struts 41 and between the second struts 42. The multiple reinforcing rods 7 are respectively passed through between all the first struts 41 and between the second struts 42. Perforations 412 for the reinforcing rods 7 to pass through are correspondingly provided between the first struts 41 and on the second struts 42, so as to improve the strength of the first strut 41 and the second strut 42, and at the same time facilitate the disassembly and installation of the reinforcing rods 7.

[0036] Referring to Figure 1 and Figure 3 , multiple springs 6 are installed on the top walls of the first strut 41 and the second strut 42. One end of each spring 6 on the first strut 41 and the second strut 42 is fixedly connected to the corresponding first strut 41 and the second strut 42, and the other ends are all fixedly connected to the wire mesh 3 together. The springs 6 can effectively play a buffering role.

[0037] Referring to Figure 6 , in order to facilitate the fixing of the insertion rod 21 into the fixing cylinder 11, a notch groove 211 is provided at the insertion end of the insertion rod 21. The notch groove 211 is arranged in a V shape. An expanding rod 111 is fixedly welded to the inner wall of the fixing cylinder 11. The cross section of the expanding rod 111 is trapezoidal. In other embodiments, the expanding rod 111 can be a square rod or a rod of other shapes. The expanding rod 111 is arranged opposite to the notch groove 211. During the process of inserting the insertion end of the insertion rod 21 into the fixing cylinder 11, the expanding rod 111 will gradually expand the notch groove 211, so that the position of the notch groove 211 of the insertion rod 21 is expanded and abuts against the inner wall of the fixing cylinder 11, so as to improve the fixing effect on the insertion rod 21, and at the same time, it is also more convenient to disassemble the insertion rod 21, the rod body 2 and the wire mesh 3 later.

[0038] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A bottom protective cover for a steel-concrete composite beam spanning over an existing high-speed railway, characterized in that: Including: Rod bodies (2), there are a pair of the rod bodies (2), and a plurality of inserting rods (21) are fixedly arranged along the length direction of the rod bodies (2); Fixed cylinders (11), the number of the fixed cylinders (11) is multiple, the fixed cylinders (11) are fixedly arranged on adjacent side walls of adjacent steel box girders (1) along the length direction of the steel box girders (1), and the inserting rods (21) are in corresponding plug-in fit with the fixed cylinders (11); Steel wire mesh (3), the steel wire mesh (3) is fixedly connected between a pair of the rod bodies (2), the steel wire mesh (3) is arranged in an upward arch shape, and a closing plate (32) is hingedly arranged at each mesh opening (31) of the steel wire mesh (3), and the closing plate (32) is used to close the mesh opening (31) of the steel wire mesh (3); Support members (4), multiple groups of the support members (4) are arranged along the length direction of the rod bodies (2) and are located between a pair of the rod bodies (2), and the support members (4) are located below the steel wire mesh (3) and are used to support the steel wire mesh (3).

2. The bottom protection cover of the overpassing existing high-speed steel-concrete composite beam according to claim 1, wherein: A torsion spring (323) is arranged at the hinge of the closing plate (32) and the steel wire mesh (3), and the torsion spring (323) is used to drive the closing plate (32) to keep closing the mesh opening (31) of the steel wire mesh (3).

3. The bottom protective cover of the overpassing existing high-speed steel-concrete composite beam according to claim 2, characterized in that: A rubber pad (5) is fixedly arranged on the top wall of the closing plate (32).

4. The bottom protective cover of the overcrossing existing high-speed steel-concrete composite beam according to claim 3, characterized in that: The closing plate (32) includes a plurality of series-connected plates (321), the plurality of series-connected plates (321) are hingedly arranged with each other, and the direction of the hinge axis between the plurality of series-connected plates (321) is the same as the direction of the hinge axis of the closing plate (32) and the steel wire mesh (3).

5. The bottom protective cover for the composite steel-concrete beam spanning over the existing high-speed railway as claimed in claim 1, wherein: The support member (4) includes a first strut (41) and a second strut (42), the first strut (41) and the second strut (42) are connected to each other and are respectively hingedly arranged on the two side rod bodies (2).

6. The bottom protective cover of the overpassing existing high-speed steel-concrete composite beam according to claim 5, characterized in that: A plurality of springs (6) are arranged on the top walls of the first strut (41) and the second strut (42), one ends of the respective springs (6) on the first strut (41) and the second strut (42) are fixedly connected to the corresponding first strut (41) and second strut (42), and the other ends are fixedly connected to the steel wire mesh (3) together.

7. The bottom protective cover of the upper-crossing existing high-speed steel-concrete composite beam according to claim 6, characterized in that: Reinforcing rods (7) are fixedly arranged between all the first struts (41) and between the second struts (42).

8. The bottom protective cover of the overpassing existing high-speed steel-concrete composite beam according to claim 1, characterized in that: A notch groove (211) is formed at the insertion end of the inserting rod (21), the notch groove (211) is arranged in a V shape, and an expanding rod (111) is fixedly arranged on the inner wall of the fixed cylinder (11), and the expanding rod (111) is arranged opposite to the notch groove (211).

9. The bottom protective cover for the upper-crossing existing high-speed steel-concrete composite beam according to claim 1, characterized in that: A buffer mesh cylinder (22) is fixedly arranged above the rod body (2), the buffer mesh cylinder (22) is arranged along the length direction of the rod body (2), and the buffer mesh cylinder (22) is attached to the side wall of the steel box girder (1).

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