A quick self-locking connection device for prefabricated modular steel bridges

Abstract

This utility model relates to the field of prefabricated modular steel bridge connection technology. It discloses a quick self-locking connection device for prefabricated modular steel bridges, including a main connecting beam. A positioning folding plate is welded and fixed to the left side of the main connecting beam, and a second locking plate is welded and fixed to the middle of the right side of the main connecting beam. The positioning folding plate, with its bent end, facilitates the interlocking of modules. Simultaneously, a first locking plate with a groove is fixed at the top and bottom of the right side of the main connecting beam, and a second locking plate with a protruding block is fixed to the middle of the right side of the main connecting beam. This protruding block can be embedded in the groove. Therefore, the two modules can be positioned by the cooperation between the first and second locking plates, thereby improving the overall positioning capability.

Description

Technical Field

[0001] This utility model relates to the field of prefabricated modular steel bridge connection technology, specifically a quick self-locking connection device for prefabricated modular steel bridges. Background Technology

[0002] Steel bridges are bridges that use steel as the main construction material. They are characterized by high strength and high rigidity, which can reduce beam height and self-weight. Their components are mostly prefabricated in factories and assembled on site. The construction cycle is short and is not affected by the season. Steel structure bridges adopt steel truss beams, steel box beams, steel-concrete composite beams and other types. They are often assembled quickly by welding, high-strength bolts or new connection components.

[0003] Precast modular steel bridges are a type of bridge structure that uses factory prefabrication and on-site assembly technology. Their core feature is that the steel bridge is decomposed into modular components through standardized design, enabling rapid construction and flexible combination. In order to reduce on-site working time, precast modular steel bridges need to be equipped with corresponding self-locking connection devices. Generally, they mainly rely on the combination design of shear studs and ring main steel bars to achieve rapid locking between modules. However, if the positioning is not good when connecting the modules, it can easily affect the stability of the components after subsequent assembly. Utility Model Content

[0004] The purpose of this invention is to provide a quick self-locking connection device for prefabricated modular steel bridges, in order to solve the problem mentioned in the background art that generally relies on the combination design of shear studs and ring main steel bars to achieve quick locking between modules, and that if the positioning is not good when connecting the modules, it can easily affect the stability of the components after subsequent assembly.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick self-locking connection device for prefabricated modular steel bridges, comprising a main connecting beam, a positioning folding plate welded and fixed to the left side of the main connecting beam, a welding strip provided between the positioning folding plate and the main connecting beam, shear studs evenly distributed on the main connecting beam, a first clamping plate welded and fixed to the upper and lower positions of the right side of the main connecting beam, and a second clamping plate welded and fixed to the middle position of the right side of the main connecting beam.

[0006] As a further technical solution of this utility model, the first card plate is symmetrically distributed about the central axis of the main connecting beam, and the first card plate is provided with grooves.

[0007] As a further technical solution of this utility model, a first mounting hole is provided in the groove, and the first mounting hole is symmetrically distributed about the central axis of the first card plate.

[0008] As a further technical solution of this utility model, a protrusion is fixed on the front end face of the second card plate, and a second mounting hole is provided on the protrusion.

[0009] As a further technical solution of this utility model, the second mounting holes are symmetrically distributed about the central axis of the second card plate, and the distance between the two second mounting holes is the same as the distance between the two first mounting holes.

[0010] As a further technical solution of this utility model, the positioning plate has a bent end, and an anti-slip pad is bonded to the back end surface of the positioning plate.

[0011] As a further technical solution of this utility model, a rubber sleeve is provided on the outside of the shear nail, and a narrowing sleeve is fixedly connected below the rubber sleeve, and a serrated end is formed on the top surface of the rubber sleeve.

[0012] As a further technical solution of this utility model, the main connecting beam is filled with a solid layer, and intersecting reinforcing bars are evenly distributed in the solid layer.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the quick self-locking connection device for prefabricated modular steel bridges not only improves the positioning ability, but also improves the deformation resistance and stability of the quick self-locking connection device.

[0014] (1) A positioning plate is welded and fixed on the left side of the main connecting beam. The positioning plate has a bent end, which facilitates the interlocking of modules. At the same time, an anti-slip pad is glued and fixed on the wall of the positioning plate to improve the fit of the contact surface. Meanwhile, a first clamping plate is fixed at the upper and lower positions on the right side of the main connecting beam. A groove is opened on the first clamping plate. A second clamping plate is fixed at the middle position on the right side of the main connecting beam. A protruding block is fixed on the second clamping plate. The protruding block can be embedded in the groove. Therefore, the two modules can be positioned by the cooperation between the first clamping plate and the second clamping plate, thereby improving the overall positioning capability.

[0015] (2) By filling the main connecting beam with a solid layer and uniformly distributing reinforcing bars in the solid layer, the reinforcing bars are composed of two intersecting bars forming an X shape. In this way, the solid layer and the reinforcing bars work together to improve the overall resistance to deformation.

[0016] (3) By installing a rubber sleeve on the outside of the shear nail, and arranging a narrowing sleeve at the bottom of the rubber sleeve, the loosening problem is reduced after the rubber sleeve is installed. At the same time, a serrated end is formed at the top of the rubber sleeve, which facilitates the rubber sleeve to grip the outer wall of the shear nail and also facilitates the assembly of the rubber sleeve. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the first card plate of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the second card plate of this utility model;

[0020] Figure 4 This is a bottom view schematic diagram of the positioning folding plate structure of this utility model;

[0021] Figure 5 This is a bottom view schematic diagram of the shear nail structure of this utility model;

[0022] Figure 6 This is a partial side view sectional diagram of the main connecting beam of this utility model.

[0023] In the diagram: 1. Main connecting beam; 2. Shear stud; 3. Positioning folding plate; 4. First clamping plate; 5. Second clamping plate; 6. Groove; 7. First mounting hole; 8. Protrusion; 9. Second mounting hole; 10. Bent end; 11. Welding strip; 12. Anti-slip pad; 13. Rubber sleeve; 14. Narrowing sleeve; 15. Serrated end; 16. Solid layer; 17. Reinforcing rod. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-6 An embodiment of this utility model provides a quick self-locking connection device for prefabricated modular steel bridges, including a main connecting beam 1, a positioning folding plate 3 welded and fixed on the left side of the main connecting beam 1, a welding strip 11 provided between the positioning folding plate 3 and the main connecting beam 1, shear nails 2 evenly distributed on the main connecting beam 1, a first clamping plate 4 welded and fixed at the upper and lower positions on the right side of the main connecting beam 1, and a second clamping plate 5 welded and fixed at the middle position on the right side of the main connecting beam 1.

[0026] As a further technical solution of this utility model, the first card plate 4 is symmetrically distributed about the central axis of the main connecting beam 1, and the first card plate 4 is provided with a groove 6.

[0027] As a further technical solution of this utility model, a first mounting hole 7 is provided in the groove 6, and the first mounting hole 7 is symmetrically distributed about the central axis of the first card plate 4.

[0028] As a further technical solution of this utility model, a protrusion 8 is fixed on the front end face of the second card plate 5, and a second mounting hole 9 is provided on the protrusion 8.

[0029] As a further technical solution of this utility model, the second mounting holes 9 are symmetrically distributed about the central axis of the second card plate 5, and the distance between the two second mounting holes 9 is the same as the distance between the two first mounting holes 7.

[0030] As a further technical solution of this utility model, a bent end 10 is formed on the positioning folding plate 3, and an anti-slip pad 12 is bonded to the back end surface of the positioning folding plate 3.

[0031] As a further technical solution of this utility model, a rubber sleeve 13 is provided on the outside of the shear nail 2, and a narrowing sleeve 14 is fixedly connected below the rubber sleeve 13. A serrated end 15 is formed on the top surface of the rubber sleeve 13.

[0032] As a further technical solution of this utility model, the main connecting beam 1 is filled with a solid layer 16, and the solid layer 16 is evenly distributed with intersecting reinforcing rods 17.

[0033] Evenly distributed intersecting reinforcing rods 17 are further distributed in the solid layer 16, and two intersecting reinforcing rods 17 form a reinforcing component;

[0034] Furthermore, the two modules can be positioned by the cooperation between the first card plate 4 and the second card plate 5. Here, during positioning, the first card plate 4 and the second card plate 5 need to be matched one-to-one for positioning during connection.

[0035] Furthermore, the design of the bent end 10 allows the modules to interlock, forming a stepped shape when interlocked, thus reducing loosening.

[0036] Working principle: First, a rubber sleeve 13 is fitted over the shear nail 2. A narrowing sleeve 14 is positioned below the rubber sleeve 13. Therefore, after the rubber sleeve 13 is fully fitted, the loosening problem is reduced. Simultaneously, a serrated end 15 is formed at the top of the rubber sleeve 13, facilitating the gripping of the rubber sleeve 13 onto the outer wall of the shear nail 2. A bent end 10 is formed on the positioning folding plate 3. This bent end 10 design allows the modules to engage. Furthermore, the positioning folding plate 3... Anti-slip pads 12 are adhered and fixed to the wall surface to improve the fit of the contact surface. At the same time, a first clamping plate 4 is fixed at the upper and lower positions on the right side of the main connecting beam 1. A groove 6 is opened on the first clamping plate 4. A second clamping plate 5 is fixed at the middle position on the right side of the main connecting beam 1. A protruding block 8 is fixed on the second clamping plate 5. The protruding block 8 can be embedded in the groove 6. Therefore, the two modules can be positioned by the cooperation between the first clamping plate 4 and the second clamping plate 5, so as to complete the subsequent connection between modules.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A quick self-locking connection device for prefabricated modular steel bridges, comprising a main connecting beam (1), characterized in that: A positioning plate (3) is welded and fixed on the left side of the main connecting beam (1). A welding strip (11) is provided between the positioning plate (3) and the main connecting beam (1). Shear nails (2) are evenly distributed on the main connecting beam (1). A first clamping plate (4) is welded and fixed at the upper and lower positions on the right side of the main connecting beam (1). A second clamping plate (5) is welded and fixed at the middle position on the right side of the main connecting beam (1).

2. The quick self-locking connection device for prefabricated modular steel bridges according to claim 1, characterized in that: The first card plate (4) is symmetrically distributed about the central axis of the main connecting beam (1), and the first card plate (4) is provided with a groove (6).

3. A quick self-locking connection device for prefabricated modular steel bridges according to claim 2, characterized in that: The groove (6) is provided with a first mounting hole (7), which is symmetrically distributed about the central axis of the first card plate (4).

4. A quick self-locking connection device for prefabricated modular steel bridges according to claim 1, characterized in that: The front end face of the second card plate (5) is fixed with a protrusion (8), and the protrusion (8) is provided with a second mounting hole (9).

5. A quick self-locking connection device for prefabricated modular steel bridges according to claim 4, characterized in that: The second mounting holes (9) are symmetrically distributed about the central axis of the second card plate (5), and the distance between the two second mounting holes (9) is the same as the distance between the two first mounting holes (7).

6. A quick self-locking connection device for prefabricated modular steel bridges according to claim 1, characterized in that: The positioning folding plate (3) has a bent end (10) formed on it, and an anti-slip pad (12) is bonded to the back end surface of the positioning folding plate (3).

7. A quick self-locking connection device for prefabricated modular steel bridges according to claim 1, characterized in that: The shear nail (2) is fitted with a rubber sleeve (13), and a narrowing sleeve (14) is fixedly connected below the rubber sleeve (13). A serrated end (15) is formed on the top surface of the rubber sleeve (13).

8. A quick self-locking connection device for prefabricated modular steel bridges according to claim 1, characterized in that: The main connecting beam (1) is filled with a solid layer (16), and intersecting reinforcing bars (17) are evenly distributed in the solid layer (16).

Images