Fabricated handrail for railroad bridge

Abstract

The utility model discloses an assembly type handrail for a railway bridge. An existing railway bridge steel handrail is complex in construction and long in construction period. A fixing seat is arranged at the bottom of a vertical plate, and the fixing seat is connected with concrete road edges on the two sides of a bridge; a hand rail and a cross rod are arranged between every two adjacent vertical plates in a penetrating manner; the vertical plate is provided with a fixing assembly used for fixing the hand rail and the cross rod; the handrail and the end part of the cross rod have the same structure, one end is a necking section, and the other end is a corresponding open section; and the necking sections are inserted into the open sections, so that the adjacent hand rails or the adjacent cross rods are connected. The utility model has few welding points, is convenient to assemble, and shortens the construction period of the whole bridge.

Description

Technical Field

[0001] The utility model belongs to the technical field of steel railings for high-speed railway bridges, and in particular relates to an assembled railing for railway bridges. Background Art

[0002] Existing railway bridge steel railing construction requirements dictate the use of manual arc welding for steel railing posts, steel plates, and steel pipe handrails. This requires secure welding, and welded joints and welds must be secure and free of leaks and debris. This is a complex process, and welding can damage the anti-corrosion coating on the steel pipe surface. After welding, a second coat of anti-corrosion paint is required, adding to the on-site construction process. Furthermore, to ensure the free expansion and contraction of the steel pipe, a steel sleeve is installed at the beam joint between adjacent beams. One end of the sleeve is bolted, while the other end is free to extend. After installation, the connecting bolts and nuts must be sealed with M40 cement mortar. This construction arrangement is also inconvenient for on-site construction. To protect the connecting bolts and nuts from environmental corrosion, cement mortar must be used to seal the surface after installation, adding steps and extending the construction period. Utility Model Content

[0003] In order to make up for the shortcomings of the existing technology, the utility model provides an assembled railing for railway bridges, which has few welding points, is easy to assemble, and can be prefabricated in the factory. During on-site assembly, it is only necessary to tighten the fastening nuts, and there is no need to add the subsequent process of applying anti-corrosion paint, thereby shortening the construction period of the entire bridge.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0005] An assembled railing for a railway bridge comprises a plurality of vertical plates arranged at intervals, wherein the bottoms of the vertical plates are provided with fixing seats, and the fixing seats are fixedly connected to the concrete curbs on both sides of the railway bridge by fastening screws;

[0006] A handrail and a crossbar are provided between two adjacent vertical boards, and both ends of the handrail and the crossbar pass through the corresponding vertical boards;

[0007] A fixing assembly for fixing the handrail and crossbar is installed on the vertical plate, and the fixing assembly includes a fixing plate, and the fixing plate is installed on the vertical plate by a bolt assembly; the fixing plate is provided with an arc-shaped groove, the shape of the arc-shaped groove matches the handrail or crossbar; the arc-shaped groove is welded to the corresponding handrail or crossbar;

[0008] The handrails and crossbars have the same end structure, one end is a necked section, and the other end is a corresponding open section; the necked section is inserted into the open section to achieve connection between adjacent handrails or adjacent crossbars.

[0009] Furthermore, the vertical plate is an arc-shaped plate, the inner side of the vertical plate has a first arc surface, the outer side of the vertical plate has a second arc surface, and the width of the vertical plate gradually increases from top to bottom.

[0010] Furthermore, a number of support plates are installed between two adjacent vertical plates.

[0011] Furthermore, the handrails and crossbars are both hollow tubes.

[0012] Furthermore, the vertical plate is provided with through holes corresponding to the handrails and the crossbars.

[0013] Furthermore, the necked section is a conical section processed on the outer wall of the steel pipe, and the open section is a conical section processed on the inner wall of the steel pipe, and the two conical sections have the same shape and size.

[0014] Furthermore, the diameter of the handrail is greater than the diameter of the crossbar.

[0015] Beneficial effects of the utility model:

[0016] 1) The assembled railing of the utility model has few welding points and is easy to assemble. It can be prefabricated in the factory and then assembled on site.

[0017] 2) When assembling the utility model on site, it is only necessary to tighten the fastening nuts without re-welding, thereby not damaging the anti-corrosion coating on the surface of the handrails, crossbars and columns, and not adding the subsequent process of applying anti-corrosion coatings, thereby shortening the construction period of the entire bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the installation of the fixed component on the vertical plate;

[0020] Figure 3 for Figure 2 A magnified schematic diagram of point A in the middle;

[0021] Figure 4 for Figure 2 A magnified schematic diagram of point B in the middle;

[0022] Figure 5 is a structural diagram of the fixed plate;

[0023] Figure 6 Handrail docking diagram Figure 1 ;

[0024] Figure 7 Handrail docking diagram Figure 2 ;

[0025] In the figure, 1-vertical plate, 2-support plate, 3-handrail, 4-cross bar, 5-fixing assembly, 6-base, 7-pipe joint, 31-neck section, 51-fixing plate, 52-bolt assembly, 53-arc groove. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to specific implementation methods.

[0027] Figure 1 This is the main view of the embodiment of the utility model. Figure 1 As shown,

[0028] like Figure 1 and Figure 2 As shown, an assembled railing for a railway bridge includes a plurality of vertical plates 1 arranged at intervals. A fixing seat 6 is provided at the bottom of the vertical plate 1, and a fastening screw is installed on the fixing seat 6. In this embodiment, there are concrete curbs on both sides of the railway bridge, and fastening screws are buried in the concrete curbs. The top of the fastening screw protrudes, and then a through hole corresponding to the fastening screw is provided on the fixing seat 6. When the fixing seat 6 is installed, the fastening screw passes through the corresponding through hole and is then locked with a locking nut, thereby realizing the detachable installation of the vertical plate 1.

[0029] In this embodiment, if Figure 1 and Figure 2 As shown, the vertical plate 1 is an arc-shaped plate, and the inner side of the vertical plate 1 has a first arc surface 11, and the outer side of the vertical plate 1 has a second arc surface 12. The width of the vertical plate 1 gradually increases from top to bottom, so that the vertical plate 1 is in a bow shape with a small top and a large bottom, thereby ensuring the bearing capacity of the vertical plate 1 in the inner and outer directions, and making it difficult for the vertical plate 1 to bend in the inner and outer directions.

[0030] In this embodiment, if Figure 1 and Figure 2 As shown, a handrail 3 and a crossbar 4 are further provided between two adjacent vertical plates 1, and both ends of the handrail 3 and the crossbar 4 pass through the corresponding vertical plates 1. A fixing assembly 5 for fixing the corresponding handrail 3 and the crossbar 4 is also installed on the vertical plate 1, and through holes corresponding to the handrail 3 and the crossbar 4 are opened on the vertical plate 1;

[0031] In this embodiment, if Figure 3 、 Figure 4 and Figure 5As shown, the fixing assembly 5 includes a fixing plate 51, which is installed on the vertical plate 1 through a bolt assembly 52, and an arc-shaped groove 53 matching the corresponding handrail 3 or crossbar 4 is provided on the fixing plate 51, and the arc-shaped groove 53 is welded to the corresponding handrail 3 or crossbar 4. When the positions of the handrail 3 and the crossbar 4 are determined, the corresponding fixing plate 51 is installed under the corresponding handrail 3 and crossbar 4, so that the corresponding arc-shaped groove 53 is fitted with the corresponding handrail 3 and crossbar 4, and the fitting part is the welding surface, and then the welding surface is welded to achieve the stability of the position of the handrail 3, crossbar 4 and the vertical plate 1.

[0032] In this embodiment, if Figure 1 As shown, several support plates 2 are installed between two adjacent vertical plates 1. The structure of the support plates 2 is the same as that of the vertical plates 1, and a fixing seat 6 is also provided at the bottom of the support plates 2. The installation of the support plates 2 is the same as that of the vertical plates 1, and will not be repeated here. The handrails 3 and the cross bars 4 are supported by the support plates 2, thereby reducing the span of the handrails 3 and the cross bars 4, and thus avoiding the bending of the handrails 3 and the cross bars 4.

[0033] The handrail 3 and the crossbar 4 are both hollow tubes. Figure 6 As shown, one end of the handrail 3 and the cross bar 4 is provided with a tapered section 31, and the adjacent handrails 3 and cross bars 4 are connected by inserting the open section into the tapered section 31, thereby realizing the docking between adjacent handrails and adjacent cross bars 4; the tapered section is made by processing a conical section on the outer wall of the steel pipe, and the open section is made by processing a conical section on the inner wall of the steel pipe. The two conical sections have the same shape and size and are tightly fitted to ensure a tight connection; this makes the entire assembled railing look like a whole, and when docking, it is necessary to apply axial thrust to the corresponding handrails and cross bars 4. Since both the vertical plate 1 and the support plate 2 have through holes, the through holes can play a guiding role, so that the two adjacent handrails 3 and cross bars 4 are easy to align, thereby facilitating the docking between adjacent handrails and adjacent cross bars 4.

[0034] like Figure 7 As shown, adjacent handrails 3 and cross bars 4 can also be connected by pipe joints 7; the handrails 3 and cross bars 4 are both hollow tubes, and the handrails 3 and cross bars 4 are both seamless steel tubes; therefore, it is only necessary to match the matching pipe joints 7 according to the model of the seamless steel tube, and there is no need to perform secondary processing on the steel tube, so there is no need to make a necking, and the pipe joints 7 are also relatively easy to process and have low processing costs.

[0035] In this embodiment, if Figure 1 As shown, the diameter of the handrail 3 is larger than the diameter of the crossbar 4, thereby saving the cost of the assembled handrail.

[0036] During installation, the operator only needs to pass the handrail 3 and the cross bar 4 through the corresponding through holes. When the handrail 3 and the cross bar 4 are installed, the two ends of the handrail 3 and the cross bar 4 are supported by the vertical plate 1, so that the position of the handrail 3 and the cross bar 4 and the vertical plate 1 can be initially stabilized. When axial thrust is applied to the handrail 3 and the cross bar 4, the handrail 3 and the cross bar 4 can be moved axially, which facilitates the docking of two adjacent handrails 3 and two adjacent cross bars 4. When the installation position of the handrail 3 and the cross bar 4 is determined, it is fixed by the fixing assembly 5, so that the relative position of the handrail 3 and the vertical plate 1 is fixed, and the relative position of the cross bar 4 and the vertical plate 1 is fixed.

[0037] Several prefabricated railings are installed on both sides of the railway bridge. These prefabricated railings can be processed and welded in a factory. After being prefabricated in the factory, they are then transported to the site for installation. This requires only a small number of on-site construction steps, reducing labor costs and achieving a certain degree of prefabricated construction technology. Furthermore, there are few welding points, only the crossbar 4 and the fixing plate 51, and the handrail 3 and the fixing plate 51. After welding, an anti-corrosion coating is applied in the factory. After transportation to the construction site, only the fastening nuts need to be tightened, thereby shortening the construction period of the entire bridge.

[0038] In the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] The content of the present invention is not limited to the embodiments listed. Any equivalent transformation of the technical solution of the present invention made by ordinary technicians in this field after reading the description of the present invention is covered by the claims of the present invention.

Claims

1. An assembled railing for a railway bridge, characterized by: It comprises a plurality of vertical plates (1) arranged at intervals, wherein a fixing seat (6) is provided at the bottom of the vertical plates (1), and the fixing seat (6) is fixedly connected to the concrete curbs on both sides of the railway bridge by fastening screws; A handrail (3) and a crossbar (4) are provided between two adjacent vertical plates (1), and both ends of the handrail (3) and the crossbar (4) pass through the corresponding vertical plates (1); A fixing assembly (5) for fixing a handrail (3) and a crossbar (4) is installed on the vertical plate (1), wherein the fixing assembly (5) comprises a fixing plate (51), wherein the fixing plate (51) is installed on the vertical plate (1) via a bolt assembly (52); an arc-shaped groove (53) is provided on the fixing plate (51), wherein the shape of the arc-shaped groove (53) matches the handrail (3) or the crossbar (4); and the arc-shaped groove (53) is welded to the corresponding handrail (3) or the crossbar (4); The handrails (3) and crossbars (4) have the same end structure, with one end being a constricted section (31) and the other end being a corresponding open section; the constricted section (31) is inserted into the open section to achieve connection between adjacent handrails (3) or adjacent crossbars (4).

2. The assembled railing for a railway bridge according to claim 1, characterized in that: The vertical plate (1) is an arc-shaped plate, the inner side of the vertical plate (1) has a first arc surface (11), the outer side of the vertical plate (1) has a second arc surface (12), and the width of the vertical plate (1) gradually increases from top to bottom.

3. The assembled railing for a railway bridge according to claim 2, characterized in that: A plurality of support plates (2) are installed between two adjacent vertical plates (1).

4. The assembled railing for a railway bridge according to claim 3, characterized in that: The handrail (3) and the crossbar (4) are both hollow tubes.

5. The assembled railing for a railway bridge according to claim 4, characterized in that: The vertical plate (1) is provided with through holes corresponding to the handrail (3) and the crossbar (4).

6. The assembled railing for a railway bridge according to claim 5, characterized in that: The necking section (31) is a conical section processed on the outer wall of the steel pipe, and the opening section is a conical section processed on the inner wall of the steel pipe. The two conical sections have the same shape and size.

7. The assembled railing for a railway bridge according to claim 6, characterized in that: The diameter of the handrail (3) is greater than the diameter of the crossbar (4).

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