Railway steel pipe hard beam

Abstract

This utility model relates to a rigid crossbeam made of steel pipe for railways, comprising: a middle section of the crossbeam, including three main middle sections connected by web members to form a triangle; a side section of the crossbeam, including three main side sections connected to both ends of the middle main sections, also connected by web members to form a triangle, wherein the two lower chord main sections of the side sections gradually approach each other before connecting; and a column connected to the main side sections. By optimizing the crossbeam cross section to a triangular cross section, the upper chord mechanism is merged from two main sections into one, significantly reducing the self-weight of the rigid crossbeam. Simultaneously, the lower chord mechanism's ends gradually approach each other for easy fixing to the column. Compared to a suspended column, it has a larger bending moment value, can adapt to tunnels of various span types, saves labor costs, and reduces construction difficulty.

Description

Technical Field

[0001] This utility model relates to the technical field of rigid crossbeams made of steel pipes, specifically to a rigid crossbeam made of steel pipes for railways. Background Technology

[0002] Currently, in the construction of electrified railways, the supporting components for the overhead contact system and cables within tunnels are typically suspended columns. These columns are suspended from pre-reserved channels within the tunnel wall via bolted connections using connecting plates, diagonal braces, and other connectors. While widely used in tunnels, suspended columns present several challenges: due to their structural characteristics and installation method, their allowable bending moment is limited to only 20 kN·m, limiting their application to tunnels with smaller spans. For larger span tunnels, alternative reinforcement methods are necessary, significantly increasing construction difficulty and costs. Utility Model Content

[0003] Based on the above description, this utility model provides a railway steel pipe rigid crossbeam to solve the problems of high construction difficulty and high construction cost of hanging columns in related technologies.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A railway steel pipe rigid crossbeam, comprising: a crossbeam middle section, including three middle section main rods, the middle section main rods being connected to each other through middle section web members to form a triangle; a crossbeam side section, the crossbeam side section including three side section main rods, the side section main rods being connected to both ends of the middle section main rods, the side section main rods being connected to each other through side section web members to form a triangle, wherein the two side section main rods of the lower chord, at the ends away from the crossbeam middle section, gradually approach each other and are then connected; and a column, connected to the side section main rods.

[0005] Based on the above technical solution, the present invention can be further improved as follows.

[0006] Furthermore, the two ends of the side section main rod are provided with side section flange plates, and the two ends of the middle section main rod are provided with middle section flange plates. The side section flange plates are fixed to the middle section flange plates by bolts.

[0007] Furthermore, the side flange plate and the middle flange plate are respectively provided with a side connecting rod and a middle connecting rod on opposite sides. The side main rod is fixed to the inner side of the side connecting rod. A side damping pad is installed between the side main rod and the side flange plate. The middle main rod is fixed to the inner side of the middle connecting rod. A middle damping pad is installed between the middle main rod and the middle flange plate.

[0008] Furthermore, the side section connecting rod is provided with side section bolt holes, and the side section main rod is fixed inside the side section connecting rod by bolts. The middle section connecting rod is provided with middle section bolt holes, and the middle section main rod is fixed inside the middle section connecting rod by bolts.

[0009] Furthermore, both the edge bolt holes and the middle bolt holes are strip-shaped holes.

[0010] Furthermore, the side bolt holes are arranged around the circumference of the side connecting rod, and the middle bolt holes are arranged around the circumference of the middle connecting rod.

[0011] Furthermore, a side stiffening plate is fixed between the side connecting rod and the side flange plate, and a middle stiffening plate is fixed between the middle connecting rod and the middle flange plate.

[0012] Furthermore, the edge stiffening plate is arranged around the edge connecting rod, and the middle stiffening plate is arranged around the middle connecting rod.

[0013] Furthermore, the column is provided with a column connecting rod, which is connected to the side main column through the same structure as the middle main column.

[0014] Furthermore, the two side main rods of the lower chord gradually tilt downwards at the ends closest to the column.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: By optimizing the crossbeam cross section into a triangular cross section, the upper chord mechanism is combined from two main rods into one main rod, thereby significantly reducing the self-weight of the rigid crossbeam. At the same time, the ends of the lower chord mechanism gradually approach and connect to one point, which facilitates fixation with the column. Compared with the hanging column, it has a larger bending moment value, can adapt to tunnels of various span types, saves labor costs, and reduces construction difficulty. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of the railway steel pipe rigid crossbeam provided in this embodiment of the utility model; Figure 2 A schematic diagram of the lower chord structure of the beam side segment provided in an embodiment of this utility model; Figure 3 A side view of the beam side segment provided in an embodiment of this utility model; Figure 4 A side view of the middle section of the crossbeam provided in an embodiment of this utility model; Figure 5 A schematic diagram of the connection structure between the middle section and the edge section of the crossbeam provided in an embodiment of this utility model.

[0017] The attached diagram lists the components represented by each number as follows: 1. Crossbeam middle section; 11. Middle section main rod; 12. Middle section web member; 13. Middle section flange plate; 14. Middle section connecting rod; 15. Middle section shock-absorbing pad; 16. Middle section bolt hole; 17. Middle section stiffening plate; 2. Crossbeam side section; 21. Side section main rod; 22. Side section web member; 23. Side section flange plate; 24. Side section connecting rod; 25. Side section shock-absorbing pad; 26. Side section bolt hole; 27. Side section stiffening plate; 3. Column. Detailed Implementation

[0018] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0019] This utility model provides a rigid crossbeam made of steel pipe for railways, which can solve the problems of difficult construction and high construction cost of hanging columns in related technologies.

[0020] See Figures 1-4 As shown in the figure, a rigid crossbeam for railway steel pipes provided in this embodiment of the present invention includes: a middle section 1 of the crossbeam, comprising three middle main rods 11, which are connected by middle web members 12 to form a triangle; a side section 2 of the crossbeam, comprising three side main rods 21, which are connected to both ends of the middle main rods 11, and are connected by side web members 22 to form a triangle, wherein the two side main rods 21 of the lower chord gradually approach each other and then connect; and a column 3 connected to the side main rods 21. By optimizing the crossbeam cross section to a triangular cross section, that is, merging the upper chord mechanism from two main rods into one main rod, the self-weight of the rigid crossbeam is significantly reduced. At the same time, the ends of the lower chord mechanism gradually approach each other and connect to one point, which is convenient for fixing to the column. Compared with the hanging column, it has a larger bending moment value, can adapt to tunnels of various span types, saves labor costs, and reduces construction difficulty.

[0021] See Figure 5 As shown, in some embodiments, the two ends of the side section main rod 21 are provided with side section flange plates 23, and the two ends of the middle section main rod 11 are provided with middle section flange plates 13. The side section flange plates 23 are fixed to the middle section flange plates 13 by bolts. The middle section main rod 11 and the side section main rod 21 can be fixedly connected by flange plates. By adopting a modular design, it is convenient for measurement and installation on the construction site.

[0022] See Figure 5As shown, in some embodiments, the side flange plate 23 and the middle flange plate 13 are respectively provided with a side connecting rod 24 and a middle connecting rod 14 on opposite sides. The side main rod 21 is fixed to the inner side of the side connecting rod 24. A side damping pad 25 is installed between the side main rod 21 and the side flange plate 23. The middle main rod 11 is fixed to the inner side of the middle connecting rod 14. A middle damping pad 15 is installed between the middle main rod 11 and the middle flange plate 13. The damping pad can absorb the vibration of the beam, improve the stability of the beam, and extend the service life of the beam.

[0023] See Figure 5 As shown, in some embodiments, the side section connecting rod 24 is provided with side section bolt holes 26, and the side section main rod 21 is fixed in the side section connecting rod 24 by bolts. The middle section connecting rod 14 is provided with middle section bolt holes 16, and the middle section main rod 11 is fixed in the middle section connecting rod 14 by bolts. This makes installation convenient and provides high connection strength.

[0024] See Figure 5 As shown, in some embodiments, the side bolt holes 26 and the middle bolt holes 16 are both strip-shaped holes, allowing the bolts to move within the strip-shaped holes, thus reserving a certain space for the vibration of the crossbeam and reducing damage to the rigid connection of the crossbeam.

[0025] See Figure 5 As shown, in some embodiments, the side bolt holes 26 are arranged around the perimeter of the side connecting rod 24, and the middle bolt holes 16 are arranged around the perimeter of the middle connecting rod 14, thereby improving the connection strength of the crossbeam and ensuring stability.

[0026] See Figure 5 As shown, in some embodiments, a side stiffening plate 27 is fixed between the side connecting rod 24 and the side flange plate 23, and a middle stiffening plate 17 is fixed between the middle connecting rod 14 and the middle flange plate 13. The stiffening plate can distribute the force on the beam and avoid stress concentration.

[0027] See Figure 5 As shown, in some embodiments, the edge stiffening plate 27 is arranged around the edge connecting rod 24, and the middle stiffening plate 17 is arranged around the middle connecting rod 14, thereby improving the beam's resistance to bending deformation and structural strength.

[0028] See Figure 1 As shown, in some embodiments, the column 3 is provided with a column connecting rod, and the column connecting rod is connected to the side main column 21 through the same structure as the middle main column 11, thereby improving the seismic performance and structural strength of the entire railway cross beam.

[0029] See Figure 1 As shown, in some embodiments, the two side main rods 21 of the lower chord gradually tilt downwards at the end near the column 3, which optimizes the force transmission path and reduces the bending deformation of the crossbeam.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0031] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0032] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0033] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A railway steel tube hard beam, characterized by, It includes: The middle section (1) of the crossbeam includes three middle main rods (11), which are connected to each other through middle web members (12) to form a triangle; The side section (2) of the crossbeam includes three side section main rods (21). The side section main rods (21) are connected to both ends of the middle section main rod (11). The side section main rods (21) are connected to each other through side section web rods (22) to form a triangle. The two side section main rods (21) of the lower chord are connected after gradually approaching each other from the end away from the middle section (1) of the crossbeam. The column (3) is connected to the main rod (21) of the side section.

2. The railway steel pipe rigid crossbeam according to claim 1, characterized in that: The two ends of the side section main rod (21) are provided with side section flange plates (23), and the two ends of the middle section main rod (11) are provided with middle section flange plates (13). The side section flange plates (23) are fixed to the middle section flange plates (13) by bolts.

3. The railway steel pipe rigid crossbeam according to claim 2, characterized in that: The side flange plate (23) and the middle flange plate (13) are respectively provided with a side connecting rod (24) and a middle connecting rod (14) on opposite sides. The side main rod (21) is fixed to the inside of the side connecting rod (24). A side damping pad (25) is installed between the side main rod (21) and the side flange plate (23). The middle main rod (11) is fixed to the inside of the middle connecting rod (14). A middle damping pad (15) is installed between the middle main rod (11) and the middle flange plate (13).

4. The railway steel pipe rigid crossbeam according to claim 3, characterized in that: The side section connecting rod (24) is provided with side section bolt holes (26), and the side section main rod (21) is fixed in the side section connecting rod (24) by bolts. The middle section connecting rod (14) is provided with middle section bolt holes (16), and the middle section main rod (11) is fixed in the middle section connecting rod (14) by bolts.

5. The railway steel pipe rigid crossbeam according to claim 4, characterized in that: Both the side bolt holes (26) and the middle bolt holes (16) are strip-shaped holes.

6. The railway steel pipe rigid crossbeam according to claim 5, characterized in that: The side bolt holes (26) are arranged around the side connecting rod (24), and the middle bolt holes (16) are arranged around the middle connecting rod (14).

7. The railway steel pipe rigid crossbeam according to claim 5, characterized in that: A side stiffening plate (27) is fixed between the side connecting rod (24) and the side flange plate (23), and a middle stiffening plate (17) is fixed between the middle connecting rod (14) and the middle flange plate (13).

8. The railway steel pipe rigid crossbeam according to claim 7, characterized in that: The edge stiffening plate (27) is arranged around the edge connecting rod (24), and the middle stiffening plate (17) is arranged around the middle connecting rod (14).

9. The railway steel pipe rigid crossbeam according to claim 8, characterized in that: The column (3) is provided with a column connecting rod, and the column connecting rod is connected to the side section main rod (21) through the same structure as the middle section main rod (11).

10. The railway steel pipe rigid crossbeam according to claim 1, characterized in that: The two side main rods (21) of the lower chord gradually tilt downwards at the end near the column (3).

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