Electrified railway contact grid structure type hard crossing structure

Abstract

The utility model discloses an electrified railway contact grid structure type hard crossing structure, which relates to the technical field of electrified railway contact nets and comprises steel upright posts, angle steel lattice type hard cross beams, davit adjusting bases and davits. The angle steel lattice type hard cross beam comprises a cross beam side section and a cross beam middle section. The cross beam side sections are spliced at two ends of the cross beam middle section; the cross beam edge section is fixed at the top position of the steel stand column through the beam column connecting plate; the steel stand column is installed on a civil engineering reserved foundation. The davit adjusting base is mounted on the middle section of the cross beam; the davit is fixed at the bottom of the davit adjusting base; the steel stand columns, the angle steel lattice type hard cross beams, the davit adjusting bases and the davits are all of an open section structure. According to the utility model, the technical problem that a micro-corrosion environment is easily formed in the rod piece under the conditions of high temperature, high humidity and heavy corrosion in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrified railway contact network, in particular to an electrified railway contact grid-type hard cross-over structure. Background Art

[0002] In recent years, my country's electrified railways have developed rapidly, especially the electrified railways in the southeast coastal areas, including the electrification of existing diesel railways and the transformation of existing electrified railways into urban public transportation projects. The notable features of such projects are that the economy along the project line is relatively developed, the land value is high, and the space available for the installation of overhead line equipment is limited; the existing railway network is intertwined, and the cross-construction operation is difficult; the marine climate characteristics such as high temperature, high humidity, and severe atmospheric corrosion are obvious. Such projects must comprehensively consider the comprehensive investment of the project, the difficulty of construction, and the convenience of operation and maintenance.

[0003] The contact network hard cross-over structure is an irreplaceable and important component of the electrification system. It is mainly divided into two parts: columns and beams. It is generally used in stations and multi-line parallel sections, spanning multiple lines. Its structural type and installation quality directly determine the quality of engineering construction and operational safety. The width of the contact network hard cross-over column directly determines the width of the railway roadbed, which in turn affects the scope of railway land acquisition. For projects along the line with a relatively developed economy and high land value, the width of the hard cross-over column has an impact on the investment in the roadbed project and the land acquisition costs. Therefore, the cross-sectional width of the hard cross-over column is required to be as small as possible under the premise of meeting the structural force.

[0004] At present, the hard span of the contact network of electrified railways generally adopts angle steel lattice hard span and steel pipe hard span. The columns and beams of angle steel lattice hard span are welded by angle steel. The column section is large, which occupies a large width of the railway roadbed and increases the civil engineering investment; the columns and beams of steel pipe hard span are welded by steel pipes. The cross section of the pillar is small, but the main rods are closed sections. Under high temperature, high humidity and heavy corrosion conditions, it is easy to form a micro-corrosion environment inside the rods, which poses a great safety hazard to railway operations and is not conducive to operation and maintenance. Utility Model Content

[0005] The purpose of the utility model is to provide an electrified railway contact grid-type hard cross-over structure in order to solve at least one of the above-mentioned technical problems.

[0006] In the first aspect, an embodiment of the utility model provides a contact grid-structured rigid cross-span structure of an electrified railway, comprising: steel columns, angle steel lattice-type rigid crossbeams, column adjustment bases and columns; wherein the angle steel lattice-type rigid crossbeams comprise beam side sections and beam middle sections; the beam side sections are spliced ​​at both ends of the beam middle section; the beam side sections are fixed to the top positions of the steel columns by beam-column connecting plates; the steel columns are installed on a reserved foundation for civil engineering; the column adjustment base is installed on the beam middle section, and the columns are fixed to the bottom of the column adjustment base; the steel columns, the angle steel lattice-type rigid crossbeams, the column adjustment bases and the columns are all open cross-section structures.

[0007] Furthermore, the steel column comprises a double H-shaped steel column; the double H-shaped steel column is welded together by two H-shaped steel columns and a column connecting plate.

[0008] Furthermore, the model of the H-shaped steel column is HW300×300×10×15, in millimeters.

[0009] Furthermore, a flange is provided at the bottom of the steel column, and the steel column is fixed to the reserved foundation of the civil engineering through the flange and a bolt assembly.

[0010] Furthermore, a crossbeam connecting plate is provided on the top of the steel column; the crossbeam side section is connected to the beam-column connecting plate by bolts, the beam-column connecting plate is connected to the crossbeam connecting plate by bolts, and the crossbeam side section is connected to the crossbeam middle section by bolts.

[0011] Furthermore, the suspension column adjustment base is installed on the lower chord angle steel of the beam in the middle section of the beam through connecting bolts.

[0012] Furthermore, an adjustment mounting hole is provided on the suspension column adjustment base, and the suspension column is installed on the adjustment mounting hole through a connecting bolt.

[0013] Furthermore, the suspension column comprises a rectangular suspension column welded together by a rectangular steel pipe and a steel plate.

[0014] Furthermore, the model of the rectangular steel pipe is 200×100×8, in millimeters.

[0015] The utility model provides a hard cross-over structure of an electrified railway contact grid structure, which adopts a modular design to facilitate measurement and installation construction at the construction site; the main components all adopt open cross-sections, which significantly improves the process quality of the structural anti-corrosion layer processing, improves the ventilation and air permeability conditions of the structure, eliminates the formation of a micro-corrosion environment for the components, improves the corrosion resistance of the hard cross-over structure, increases the service life of the contact network hard cross-over, and facilitates operation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 An overall schematic diagram of a hard cross-over structure of an electrified railway contact grid structure provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a cross-sectional view of the top of a steel column provided in an embodiment of the utility model;

[0019] Figure 3 A schematic structural diagram of a beam edge section provided in an embodiment of the utility model;

[0020] Figure 4 A schematic diagram of the structure of a middle section of a beam provided in an embodiment of the utility model;

[0021] Figure 5 A schematic diagram of a connection node structure between a steel column and a beam edge section provided in an embodiment of the utility model;

[0022] Figure 6 A schematic diagram of the bottom cross-section of a steel column provided in an embodiment of the utility model;

[0023] Figure 7 A schematic diagram of a connection node between a hanging column and a middle section of a beam provided in an embodiment of the utility model.

[0024] In the figure: 1. Steel column, 11. H-shaped steel column, 12. Column connecting plate, 13. Beam connecting plate, 14. Flange, 2. Angle steel lattice hard beam, 21. Beam side section, 22. Beam middle section, 23. Beam lower chord angle steel, 3. Hanging column adjustment base, 31. Adjustment installation hole, 4. Hanging column, 5. Beam-column connecting plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Figure 1The figure is a schematic diagram of an overall structure of a hard cross-over structure of an electrified railway contact grid structure provided according to an embodiment of the utility model. Figure 1 As shown, the structure includes: a steel column 1, an angle steel lattice type hard beam 2, a hanging column adjustment base 3 and a hanging column 4.

[0027] Specifically, Figure 1 As shown, the angle steel lattice rigid beam 2 includes a beam side section 21 and a beam middle section 22; the beam side section 21 is spliced ​​at both ends of the beam middle section 22; the beam side section 21 is fixed to the top position of the steel column 1 through the beam-column connecting plate 5; the steel column 1 is installed on the reserved foundation of the civil engineering; the hanging column adjustment base 3 is installed on the beam middle section 22, and the hanging column 4 is fixed to the bottom of the hanging column adjustment base 3.

[0028] In the embodiment of the utility model, the steel column 1, the angle steel lattice type rigid beam 2, the suspension column adjustment base 3 and the suspension column 4 are all open cross-section structures.

[0029] Figure 2 Schematic diagram of the top cross section of a steel column provided according to an embodiment of the utility model. Figure 2 As shown, the steel column 1 includes a double H-shaped steel column; the double H-shaped steel column is welded together by two H-shaped steel columns 11 and a column connecting plate 12.

[0030] Preferably, the model of the H-shaped steel column 11 is HW300×300×10×15, in millimeters.

[0031] like Figure 1 and Figure 2 As shown, a crossbeam connecting plate 13 is provided on the top of the steel column 1 .

[0032] Figure 3 is a structural schematic diagram of a beam edge section provided according to an embodiment of the utility model, Figure 4 Schematic diagram of the structure of the middle section of a beam provided according to an embodiment of the utility model. Figure 3 and Figure 4 As shown, in the embodiment of the utility model, the side section 21 of the cross beam and the middle section 22 of the cross beam are both formed by welding angle steel and steel plates in sections, and the side section 21 of the cross beam and the middle section 22 of the cross beam are connected by bolts.

[0033] Figure 5 The following is a schematic diagram of a connection node structure between a steel column and a beam edge section provided according to an embodiment of the utility model. Figure 3 and Figure 5 As shown, in the embodiment of the utility model, the cross beam side section 21 is connected to the beam-column connecting plate 5 by bolts, the beam-column connecting plate 5 is connected to the cross beam connecting plate 13 by bolts, and the cross beam connecting plate 13 is connected to the H-shaped steel column 11 by bolts.

[0034] Figure 6 Schematic diagram of the bottom cross section of a steel column provided according to an embodiment of the utility model. Figure 1 and Figure 6 As shown, a flange 14 is provided at the bottom of the steel column 1, and the steel column 1 is fixed to the reserved foundation of the civil engineering through the flange 14 and a bolt assembly.

[0035] Figure 7 Schematic diagram of a connection node between a suspender column and a middle section of a beam provided according to an embodiment of the utility model. Figure 7 As shown, the suspender adjustment base 3 is installed on the lower chord angle steel 23 of the beam in the middle section 22 of the beam through connecting bolts.

[0036] Preferably, if Figure 7 As shown, an adjustment installation hole 31 is provided on the suspension column adjustment base 3, and the suspension column 4 is installed on the adjustment installation hole 31 through connecting bolts.

[0037] Preferably, in the embodiment of the utility model, the suspension column 4 comprises a rectangular suspension column welded from a rectangular steel pipe and a steel plate, wherein the model of the rectangular steel pipe is 200×100×8, in millimeters.

[0038] From the above description, it can be seen that the embodiment of the utility model provides a hard cross-over structure of an electrified railway contact grid structure. The cross-section of the columns of the hard cross-over structure is small, and the width of the railway roadbed occupied is small, thus saving the investment in civil engineering projects. The hard cross-over structure adopts a modular design, which is convenient for measurement and installation construction at the construction site. The main components of the hard cross-over all adopt open cross-sections, which significantly improves the process quality of the structural anti-corrosion layer processing, improves the ventilation and air permeability conditions of the structure, eliminates the formation of a micro-corrosion environment of the components, improves the corrosion resistance of the hard cross-over structure, and increases the service life of the contact network hard cross-over, facilitating operation and maintenance.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A contact grid-type hard cross-over structure for an electrified railway, characterized in that: include: Steel columns, angle steel lattice rigid beams, column adjustment bases and columns; wherein the angle steel lattice rigid beams include a beam side section and a beam middle section; the beam side sections are spliced ​​at both ends of the beam middle section; the beam side sections are fixed to the top of the steel columns through beam-column connecting plates; the steel columns are installed on the reserved foundation of civil engineering; the column adjustment base is installed on the beam middle section, and the column is fixed to the bottom of the column adjustment base; The steel columns, the angle steel lattice-type rigid cross beams, the suspension column adjustment base and the suspension column are all open cross-section structures.

2. The contact grid structure hard cross-over structure of the electrified railway according to claim 1, characterized in that: The steel columns include double H-shaped steel columns; the double H-shaped steel columns are welded together by two H-shaped steel columns and a column connecting plate.

3. The contact grid structure hard cross-over structure of the electrified railway according to claim 2, characterized in that: The model of the H-shaped steel column is HW300×300×10×15, in millimeters.

4. The contact grid structure hard cross-over structure of the electrified railway according to claim 1, characterized in that: A flange is provided at the bottom of the steel column, and the steel column is fixed to the reserved foundation of the civil engineering through the flange and a bolt assembly.

5. The contact grid structure hard cross-over structure of the electrified railway according to claim 1, characterized in that: A crossbeam connecting plate is provided on the top of the steel column; The side section of the cross beam is connected to the beam-column connecting plate by bolts, the beam-column connecting plate is connected to the cross beam connecting plate by bolts, and the side section of the cross beam is connected to the middle section of the cross beam by bolts.

6. The contact grid structure hard cross-over structure of the electrified railway according to claim 1, characterized in that: The suspension column adjustment base is installed on the lower chord angle steel of the beam in the middle section of the beam through connecting bolts.

7. The contact grid structure hard cross-over structure of the electrified railway according to claim 1, characterized in that: An adjustment installation hole is provided on the suspension column adjustment base, and the suspension column is installed on the adjustment installation hole through a connecting bolt.

8. The contact grid structure hard cross-over structure of the electrified railway according to claim 1, characterized in that: The suspension column comprises a rectangular suspension column formed by welding a rectangular steel pipe and a steel plate.

9. The contact grid structure hard cross-over structure of the electrified railway according to claim 8, characterized in that: The model of the rectangular steel pipe is 200×100×8, in millimeters.

Images