Assembly type steel frame bridge joint connecting structure

Abstract

The utility model discloses an assembly type steel frame bridge joint connecting structure which comprises a vertical beam and a cross beam. Cross beams are movably installed on the two sides of the vertical beams, reinforcing pieces are movably installed at the top ends and the bottom ends of the adjacent sides of the cross beams, and bolts are movably installed at the joints of the vertical beams and the cross beams. Through the arrangement of the gaskets and the arrangement of the first gasket and the second gasket between the bolt and the nut, when the nut is locked, the sawteeth can be embedded into the surface of the bolt and the surface of the joint respectively, the gaskets are tightly attached to each other, the wedge-shaped grooves are meshed, and when the bolt is vibrated and tends to loosen and rotate, the nut is prevented from being loosened. Due to the fact that the inclination angle of the wedge-shaped groove is larger than the thread pitch of the bolt thread, the lift generated by the gasket is larger than the lift generated by the nut, the nut can be further tightened, looseness is prevented, the wedge-shaped effect is generated below the nut, the bolt of the assembly type steel frame bridge joint connecting structure is not prone to looseness, and the joint connecting strength and stability are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of assembled steel frame bridges, in particular to an assembled steel frame bridge node connection structure. Background Art

[0002] The joint connections of prefabricated steel-frame bridges are crucial for ensuring structural stability and safety. These connections must not only bear the weight of the bridge itself, but also external loads such as vehicles and pedestrians, and maintain stable performance under various environmental conditions. Prefabricated steel-frame bridges employ a variety of joint connection types, with bolted connections being the most common.

[0003] The traditional existing technical solutions have the following defects: the bolt-connected prefabricated steel frame bridge node connection structure will be subject to vibration and impact caused by vehicles, wind loads, etc. during use. These external forces may cause slight loosening of the bolt connection. The loosening of the bolts will lead to a decrease in the clamping force of the connection part, thereby weakening the strength and stability of the node connection, making the connection part more susceptible to damage when the steel frame bridge is under load. Utility Model Content

[0004] The utility model aims to provide a prefabricated steel frame bridge node connection structure to solve the defect that bolts of the existing prefabricated steel frame bridge node connection structure are easy to loosen.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: an assembled steel frame bridge node connection structure, comprising a vertical beam and a horizontal beam; horizontal beams are movably installed on both sides of the vertical beams, and reinforcement plates are movably installed on the top and bottom ends of adjacent sides of the horizontal beams, and bolts are movably installed at the connections between the vertical beams and the horizontal beams; the bolts comprise a nut, a first gasket and a second gasket; the nut is movably installed on the outside of the bolt, a first gasket is movably provided on the outside of the bolt on one side of the nut, and a second gasket is provided on one side of the first gasket.

[0006] Preferably, support blocks are movably installed at both ends of the vertical beam, and the support blocks are in an "X" cross shape.

[0007] Preferably, the reinforcing plates are mounted on the vertical beams and the horizontal beams by bolts, and the reinforcing plates are triangular in shape.

[0008] Preferably, the nut and the bolt are threadedly connected, and the first gasket and the second gasket are both sleeved on the outside of the bolt.

[0009] Preferably, the second gasket includes serrations and a wedge-shaped groove, and the wedge-shaped groove is provided on a side opposite to the first gasket and the second gasket.

[0010] Preferably, the wedge-shaped grooves are meshed with each other, and a snap-fit ​​structure is formed between the wedge-shaped grooves.

[0011] Preferably, the serrations are arranged on the side opposite to the first gasket and the second gasket, and the teeth of the serrations are opposite to each other.

[0012] The utility model provides an assembled steel frame bridge node connection structure, which has the advantages that: by providing a gasket, a first gasket and a second gasket provided between the bolt and the nut, when the nut is locked, the serrations will be embedded in the surface of the bolt and the connection respectively, and the first gasket and the second gasket are tightly fitted together, so that the wedge-shaped grooves are meshed. When the bolt is vibrated and tends to loosen and rotate, because the inclination angle of the wedge-shaped groove is greater than the pitch of the bolt thread, the lift generated by the gasket is greater than the lift generated by the nut, which will further tighten the nut to prevent loosening, and thus generate a wedge effect under the nut, so that the bolts of the assembled steel frame bridge node connection structure are not easy to loosen, thereby enhancing the strength and stability of the node connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from a top view;

[0014] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model in a disassembled state viewed from above;

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of the utility model in a disassembled state when viewed from above;

[0016] Figure 4 This is a schematic diagram of the three-dimensional structure of the bolt of the utility model;

[0017] Figure 5 This is a schematic diagram of the three-dimensional structure of the second gasket of the present invention.

[0018] In the figure: 1, vertical beam; 2, reinforcement plate; 3, cross beam; 4, support block; 5, bolt; 51, nut; 52, first gasket; 53, second gasket; 531, ratchet; 532, wedge groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 5The utility model provides an assembled steel frame bridge node connection structure, including a vertical beam 1 and a cross beam 3; cross beams 3 are movably installed on both sides of the vertical beam 1, and the top and bottom ends of the adjacent sides of the cross beam 3 are movably installed with reinforcement plates 2, and support blocks 4 are movably installed at both ends of the vertical beam 1, and the support blocks 4 are in an "X" cross shape, and bolts 5 are movably installed at the connection between the vertical beam 1 and the cross beam 3. The reinforcement plates 2 and the vertical beam 1 and the cross beam 3 are all installed by bolts 5, and the reinforcement plates 2 are triangular in shape. The bolts 5 include nuts 51, first washers 52 and second washers 53; the nuts 51 are movably installed on the outside of the bolts 5, and the bolts A first washer 52 is movably provided on the outside of the bolt 5 on one side of the nut 51, and a second washer 53 is provided on one side of the first washer 52. The nut 51 and the bolt 5 are threadedly connected. The first washer 52 and the second washer 53 are both sleeved on the outside of the bolt 5. The second washer 53 includes serrations 531 and wedge-shaped grooves 532. The wedge-shaped grooves 532 are provided on opposite sides of the first washer 52 and the second washer 53. The wedge-shaped grooves 532 are meshed with each other, and a locking structure is formed between the wedge-shaped grooves 532. The serrations 531 are provided on the opposite sides of the first washer 52 and the second washer 53, and the teeth of the serrations 531 are opposite to each other.

[0021] Refer to the attached Figure 1 、 Figure 4 and Figure 5 When the device is used, first insert the support block 4 between the vertical beam 1 through the bolt 5 to limit the position, then fix the cross beam 3 and the bolt 5 inserted into the vertical beam 1, and finally fix the reinforcement pieces 2 at the corners of the cross beam 3 through the bolt 5. The first gasket 52 and the second gasket 53 are set between the bolt 5 and the nut 51. Rotate the nut 51 to lock the connection. The serrations 531 will be embedded in the surface of the bolt 5 and the connection respectively. The first gasket 52 and the second gasket 53 fit tightly together, so that the wedge groove 532 meshes with each other. When the bolt When the bolt 5 is subjected to vibration and tends to loosen and rotate, the lift generated by the washer is greater than the lift generated by the nut 51 because the inclination angle of the wedge-shaped groove 532 is greater than the pitch of the bolt 5 thread, thereby further tightening the nut 51 to prevent loosening. Therefore, a wedge effect is generated under the nut 51, which strengthens the strength and stability of the node connection. At the same time, the reinforcement sheet 2 can enhance the firmness between the cross beam 3 and the vertical beam 1 and enhance the compressive resistance. The "X"-shaped support block 4 inside the vertical beam 1 improves the strength of the vertical beam 1 and strengthens the stability of the node.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A prefabricated steel frame bridge node connection structure, comprising a vertical beam (1) and a horizontal beam (3); Its characteristics are: Both sides of the vertical beam (1) are movably mounted with a cross beam (3), and the top and bottom ends of adjacent sides of the cross beam (3) are movably mounted with a reinforcement plate (2), and the connection between the vertical beam (1) and the cross beam (3) is movably mounted with a bolt (5); The bolt (5) comprises a nut (51), a first washer (52) and a second washer (53); The nut (51) is movably mounted on the outside of the bolt (5); a first washer (52) is movably provided on the outside of the bolt (5) on one side of the nut (51), and a second washer (53) is provided on one side of the first washer (52).

2. The assembled steel frame bridge node connection structure according to claim 1, characterized in that: Support blocks (4) are movably mounted on both ends of the vertical beam (1), and the support blocks (4) are in an "X" cross shape.

3. The assembled steel frame bridge node connection structure according to claim 1, characterized in that: The reinforcing plate (2) and the vertical beam (1) and the horizontal beam (3) are all installed via bolts (5), and the reinforcing plate (2) is triangular in shape.

4. The assembled steel frame bridge node connection structure according to claim 1, characterized in that: The nut (51) and the bolt (5) are threadedly connected, and the first washer (52) and the second washer (53) are both sleeved on the outside of the bolt (5).

5. The assembled steel frame bridge node connection structure according to claim 1, characterized in that: The second gasket (53) comprises serrations (531) and a wedge-shaped groove (532), and the wedge-shaped groove (532) is arranged on a side opposite to the first gasket (52) and the second gasket (53).

6. The assembled steel frame bridge node connection structure according to claim 5, characterized in that: The wedge-shaped grooves (532) are meshed with each other, and a snap-fit ​​structure is formed between the wedge-shaped grooves (532).

7. The assembled steel frame bridge node connection structure according to claim 5, characterized in that: The saw teeth (531) are arranged on the side opposite to the first gasket (52) and the second gasket (53), and the teeth between the saw teeth (531) are opposite.

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