A catenary narrow gauge limit double line arm support system

Abstract

The application discloses a catenary narrow shape limited double-line route cantilever arm support system, which comprises a double-spliced double-section H-shaped steel column, a flange plate is welded at the low end of the double-spliced double-section H-shaped steel column, an N-shaped connecting base is fixed on the double-spliced double-section H-shaped steel column through bolts, a cantilever square tube beam is fixed on the N-shaped connecting base through bolts, and a cable-stayed line is connected between the top outer wall of the double-spliced double-section H-shaped steel column and the cantilever square tube beam. The catenary narrow shape limited double-line route cantilever arm support system can meet the load requirements of 150kN.m of vertical line and 450kN.m of in-line line.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of catenary support systems, in particular to a catenary narrow clearance double-line arm support system. BACKGROUND

[0002] At present, in the construction of electrified railways, double-line railways usually adopt double-side support systems to meet the power supply requirements of catenaries. Depending on the specific circumstances of the project, the double-side support system has perfect solutions such as H-column arm system, lattice column arm system, and hard cross-span suspension system. However, as high-speed railway construction moves to more areas, such as mountainous areas, rivers, and bridges, the double-line construction in special areas has many characteristics, such as poor double-side construction conditions and small railway clearance. The construction cost of the normal double-side support system in this environment is extremely high, and the subsequent operation and maintenance are difficult. To solve this problem, a single-side support system that meets the power supply requirements of narrow clearance double-line catenaries needs to be researched.

[0003] The single-side double-line support system uses a cantilever beam connected to a suspension column as a suspension system. To meet the suspension load requirements, the cantilever beam is supported by a stay wire. The catenary support column needs to have large capacity and long column body. At the same time, to meet the small clearance problem, the flange of the support column needs to be optimized to reduce the size of the flange. SUMMARY

[0004] The purpose of the present application is to solve the problems in the prior art and provide a catenary narrow clearance double-line arm support system.

[0005] To achieve the above purpose, the present application adopts the following technical scheme: a catenary narrow clearance double-line arm support system, comprising a double-spliced double-section H-shaped steel column, a flange plate is welded to the low end of the double-spliced double-section H-shaped steel column, an N-shaped connecting base is bolted to the double-spliced double-section H-shaped steel column, a cantilever square tube beam is bolted to the N-shaped connecting base, and a stay wire is connected between the top end outer wall of the double-spliced double-section H-shaped steel column and the cantilever square tube beam.

[0006] Further description of the above technical scheme:

[0007] The double-spliced double-section H-shaped steel column is composed of two H-shaped steel columns and a connecting flange. The two H-shaped steel columns are connected and fixed by the connecting flange.

[0008] Further description of the above technical scheme:

[0009] A stiffener plate is welded between the flange plate and the double-spliced double-section H-shaped steel column.

[0010] Further description of the above technical scheme:

[0011] The bolt hole is formed at the upper surface corner of the flange plate, a plurality of bolt holes are formed, the distance between the adjacent two bolt holes is equal, and the ground bolt is threadedly connected in the bolt hole.

[0012] As a further description of the above technical solution:

[0013] The hanging column is further provided with a connecting flange welded at the top end of the hanging column, and the connecting flange is in bolted connection with the cantilever square tube beam.

[0014] As a further description of the above technical solution:

[0015] The N-shaped connecting base is composed of two base channel steels, two base angle steels, base angle steel stiffening plates, base channel steel pads and fixed angle steels, two base channel steels are welded between the two base angle steels, the base angle steel stiffening plates are welded on the two base angle steels, the base channel steel pads are arranged on the two base channel steels, the fixed angle steels are welded between the two base channel steels, and the connecting angle steels are welded between the two base angle steels.

[0016] As a further description of the above technical solution:

[0017] The size of the flange plate is 970mm*810mm.

[0018] As a further description of the above technical solution:

[0019] The two base angle steels are threadedly connected with the fastening bolts penetrating the double-spliced double-section H-shaped steel column, and the two ends of the fastening bolts are threadedly connected with the limiting nuts.

[0020] Compared with the prior art, the beneficial effects of the present application are:

[0021] 1、The contact net narrow shape limit double line arm support system comprises a double-spliced double-section H-shaped steel support column, a cantilever square tube beam, an N-shaped connecting base connecting the support column and the beam, and a cable-stayed line, and can meet the load requirements of 150kN.m in the vertical line and 450kN.m in the line.

[0022] 2、The contact net narrow shape limit double line arm support system optimizes the design of the flange plate, and the size of the optimized flange is 970mm*810mm, which is 31% smaller than the size of the lattice steel column flange in the line direction, 20% smaller in the vertical line direction, and 45% smaller in the overall area.

[0023] 3、The contact net narrow limit double line route wrist arm support system provided with the stiffened plate guarantees the connection of the H-shaped steel column and the bottom flange plate is firm, and simultaneously increases the number of foundation bolts, a plurality of foundation bolts are arranged along the four directions of the flange plate, and the stability of the bottom of the H-shaped steel column is greatly increased.

[0024] 4、The contact net narrow limit double line route wrist arm support system, the H-shaped steel column and the cantilever square tube beam are connected through the N-shaped connecting base, the N-shaped connecting base is a special connecting device designed according to the size of the double-spliced H column and the steel pipe beam, is connected with the H column in the form of angle steel hoop, and is prevented from falling off through the arrangement of the fastening bolt. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 A contact net narrow limit double line route wrist arm support system structure schematic view is provided for the application;

[0026] Figure 2 A contact net narrow limit double line route wrist arm support system structure schematic view is provided for the application;

[0027] Figure 3 A contact net narrow limit double line route wrist arm support system N-shaped connecting base front view is provided for the application;

[0028] Figure 4 A contact net narrow limit double line route wrist arm support system N-shaped connecting base side view is provided for the application;

[0029] Figure 5 A contact net narrow limit double line route wrist arm support system double-spliced double-section H-shaped steel column cross section schematic view is provided for the application.

[0030] LEGEND:

[0031] 1, flange plate; 11, stiffened plate; 12, bolt hole; 2, N-shaped connecting base; 21, base channel steel; 22, base angle steel; 23, base angle steel stiffened plate; 24, base channel steel pad; 25, fixed angle steel; 3, connecting flange; 4, double-spliced double-section H-shaped steel column; 5, inclined cable; 6, cantilever square tube beam; 7, suspension column. DETAILED DESCRIPTION

[0032] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of the present application.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Referring to Figures 1-5 , including double-pinned double-section H-shaped steel column 4, double-pinned double-section H-shaped steel column 4 low end welded with flange plate 1, double-pinned double-section H-shaped steel column 4 on the bolt fixed with N-shaped connecting base 2, N-shaped connecting base 2 on the bolt fixed with cantilever square tube beam 6, double-pinned double-section H-shaped steel column 4 top end outer wall and cantilever square tube beam 6 between connecting with cable-stayed line 5.

[0035] Double-pinned double-section H-shaped steel column 4 is composed of two H-shaped steel columns and connecting flange 3, and the two H-shaped steel columns are connected and fixed through connecting flange 3.

[0036] In the embodiment, the double-pinned double-section H-shaped steel support has the structural characteristics of double-pinning and double-sectioning. Figure 1 As shown in Figure 5As shown, double splicing: in order to meet the load demand of large capacity along the line direction, two H-shaped steel columns are spliced and welded along the line direction, wherein the H-shaped steel column section forms GH240, GH260, GH280, GH300, GHT240 and other models, the example is GHT240, double section: under the condition of double line suspension, the longitudinal direction of the column meets the demand of cable-stayed line, and the height is designed to be 13m, while the commonly used H-shaped steel column on the current railway is 11m at most, which cannot meet the demand, after research and test, the existing H column is connected and formed by section flange, the first connecting section is 7.5-11m, the second connecting section is 2-5.5m according to the actual demand, and the connecting flange is the same as the column bottom flange plate 1.

[0037] The flange plate 1 and the double-spliced double-section H-shaped steel column 4 are welded with a stiffened plate 11.

[0038] The upper surface of the flange plate 1 is provided with bolt holes 12, a plurality of bolt holes 12 are provided, the distance between adjacent two bolt holes 12 is equal, and the bolt holes 12 are threadedly connected with anchor bolts.

[0039] As shown in the figure: Figure 2 The stiffened plate 11 is provided with 14 pieces to ensure the firm connection of the column body and the bottom flange, and the number of anchor bolts is increased, a total of 18 anchor bolts are arranged in four directions, which greatly increases the stability of the column bottom.

[0040] It also includes a hanging column 7, and the top end of the hanging column 7 is welded with a connecting flange 3, and the connecting flange 3 is bolted and fixedly connected with the cantilever square tube beam 6.

[0041] The N-shaped connecting base 2 is composed of two base channel steels 21, two base angle steels 22, base angle steel stiffened plates 23, base channel steel pads 24 and fixed angle steels 25, two base channel steels 21 are welded between the two base angle steels 22, the base angle steel stiffened plates 23 are welded on the two base angle steels 22, the base channel steel pads 24 are arranged on the two base channel steels 21, and the fixed angle steels 25 are welded between the two base channel steels 21, and the connecting angle steels are welded between the two base angle steels 22.

[0042] In this embodiment, as shown in the figures: Figure 1 , Figure 3 and Figure 4 The double-spliced double-section H-shaped steel column 4 and the cantilever square tube beam 6 are connected by the N-shaped connecting base 2, the N-shaped connecting base 2 is a special connecting device designed according to the size of the double-spliced double-section H-shaped steel column 4 and the cantilever square tube beam 6, which is connected with the double-spliced double-section H-shaped steel column 4 in the form of angle steel hoop to prevent the base from falling off, and is connected with the cantilever square tube beam 6 in the form of penetrating bolt to strengthen the connection fastness.

[0043] The size of the flange plate 1 is 970mmx810mm.

[0044] In the embodiment, the double-spliced double-segment H-shaped steel column 4 is optimized in design of the flange plate 1 under the premise of guaranteeing load requirements to meet the clearance requirement. After optimization, the size of the flange is 970 mm x 810 mm. Compared with the size of the lattice steel column flange, which is 1416 mm x 1016 mm, the size in the direction of the line is reduced by 31%, the size perpendicular to the line is reduced by 20%, and the overall occupied area is reduced by 45%.

[0045] The two base angle steels 22 are threadedly connected with a fastening bolt penetrating through the double-spliced double-segment H-shaped steel column 4, and the two ends of the fastening bolt are threadedly connected with limit nuts.

[0046] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A catenary narrow gauge limited double line cantilever support system, characterized in that, The utility model provides a kind of double-pinned double-segment H-shaped steel column (4), the flange plate (1) is welded in low end of the double-pinned double-segment H-shaped steel column (4), the N-shaped connecting base (2) is bolted on the double-pinned double-segment H-shaped steel column (4), the cantilever square tube beam (6) is bolted on the N-shaped connecting base (2), and the inclined cable (5) is connected between the top end outer wall of the double-pinned double-segment H-shaped steel column (4) and the cantilever square tube beam (6);The double-pinned double-segment H-shaped steel column (4) is composed of two H-shaped steel columns and connecting flange (3), and the two H-shaped steel columns are connected and fixed by the connecting flange (3). The N-shaped connecting base (2) is composed of two base channel steels (21), two base angle steels (22), base angle steel stiffening plates (23), base channel steel pads (24) and fixed angle steels (25), two base channel steels (21) are welded between the two base angle steels (22), the base angle steel stiffening plates (23) are welded on the two base angle steels (22), the base channel steel pads (24) are arranged on the two base channel steels (21), the fixed angle steels (25) are welded between the two base channel steels (21), and the connecting angle steels are welded between the two base angle steels (22).

2. The catenary narrow profile bounded double line system of claim 1, wherein, The flange plate (1) and the double-pinned double-segment H-shaped steel column (4) are welded with the stiffening plate (11).

3. The catenary narrow profile containment twin line arm support system of claim 1, wherein, The bolt holes (12) are arranged on the upper surface of the flange plate (1), the bolt holes (12) are arranged in a plurality of numbers, the spacing between adjacent bolt holes (12) is equal, and the ground bolt is threadedly connected in the bolt hole (12).

4. The catenary narrow profile containment twin line arm support system of claim 1, wherein, The utility model also includes a davit (7), the connecting flange (3) is welded on the top end of the davit (7), and the connecting flange (3) is bolted and fixedly connected with the cantilever square tube beam (6).

5. The catenary narrow profile containment twin line arm support system of claim 1, wherein, The size of the flange plate (1) is 970mm×810mm.

6. The catenary narrow profile bounded twin line arm support system of claim 1, wherein, The fastening bolt penetrating the double-pinned double-segment H-shaped steel column (4) is threadedly connected between the two base angle steels (22), and the limit nuts are threadedly connected at both ends of the fastening bolt.

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