Mounting structure for additional lead davit of steel structure bridge

Abstract

The utility model relates to the field of rail transit construction, in particular to a steel structure bridge additional wire davit installation structure which comprises a top plate and a bottom plate, a connecting assembly is arranged between the top plate and the bottom plate, the connecting assembly is detachably connected with the top plate and the bottom plate respectively, and the lower portion of the bottom plate is connected with a wire davit. The top plate and the bottom plate which are detachably connected are clamped on the upper side and the lower side of the bridge body, detachable installation of the wire davit on the bridge is achieved, the difficulty of bridge stringing construction is lowered, the safety of the construction process is improved, the installation position of the wire davit can be adjusted according to actual needs, and the wire davit is convenient to use. And later repairing work on the beam body is also avoided.

Description

Technical Field

[0001] The utility model relates to the field of rail transit construction, in particular to an additional wire suspension column installation structure for a steel structure bridge. Background Art

[0002] On steel structure bridges, due to the design of the beam itself, it is difficult to install the additional overhead wire on the existing beam at a suitable installation position that meets both the insulation distance and the limit requirements. Therefore, in the current construction of additional overhead wire suspension, the problem is generally solved by welding installation nodes on the existing beam.

[0003] According to existing technical requirements and specifications, the height of the protection line from the ground shall not be less than 4000mm, the dynamic distance between the positive feeder and the protection line shall not be less than 500mm, the minimum distance between the additional conductor and the cliff, retaining wall and rock when there is no wind is 500mm, and the minimum distance when calculating the maximum wind deviation is 75mm. If the general welding installation node method is adopted, the high-altitude construction work is designed, and the welding construction is carried out, the requirements for the process are extremely high, and there are safety hazards. The structural position of the steel structure bridge beam is different from the arrangement of the contact network pillars. There is a problem that there is no suitable installation node welding position in some positions, and welding is easy to damage the beam structure and surface coating. The later repair and restoration work will also increase the construction cost investment. This construction method is extremely difficult and costly.

[0004] Therefore, a technical solution is currently needed to solve the technical problems of installing conductor hangers on bridge beams by welding installation nodes, which have great construction difficulty, high safety risks and non-adjustable position. Utility Model Content

[0005] The purpose of the invention of the utility model is to provide an additional conductor hanger installation structure for steel structure bridges in view of the technical problems that the prior art uses welding installation nodes to install conductor hangers on bridge beams, which has great construction difficulty, high safety risks and non-adjustable positions.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A steel structure bridge additional wire hanger installation structure comprises a top plate and a bottom plate, a connecting component is provided between the top plate and the bottom plate, the connecting component is detachably connected to the top plate and the bottom plate respectively, and a wire hanger is connected to the lower part of the bottom plate.

[0008] The utility model discloses an additional wire hanger installation structure for a steel structure bridge. When in use, the bottom plate is placed at the bottom of the bridge beam, the top plate is placed at the top of the bridge beam, and the top plate and the bottom plate are tightened to each other through a connecting component, so that the top plate and the bottom plate are clamped at the upper and lower sides of the bridge beam, so that the wire hanger can be suspended and installed at the bottom of the bridge beam, and then the wire is installed through the wire hanger; the present application realizes the detachable installation of the wire hanger on the bridge by clamping the top plate and the bottom plate detachably connected to each other at the upper and lower sides of the bridge beam, thereby reducing the difficulty of bridge wiring construction and improving the safety of the construction process, and the installation position of the wire hanger can be adjusted according to actual needs, and also avoids the need to repair the beam at a later stage.

[0009] As a preferred solution of the utility model, the connection assembly includes a plurality of bolts, which are arranged on both sides of the top plate, and the top plate and the bottom plate are respectively provided with connection holes adapted to the bolts, and two nuts are sleeved on the bolts, and the top plate and the bottom plate are arranged between the two nuts. The detachable connection between the top plate and the bottom plate is realized, so that the top plate and the bottom plate are respectively clamped on the upper and lower sides of the bridge beam body, thereby realizing the detachable installation of the wire hanger on the bridge beam body.

[0010] As a preferred solution of the utility model, a gasket is provided between the top plate and the nut, and between the bottom plate and the nut. The gasket can abut between the nut and the top plate or the bottom plate, and the nut is subjected to a reaction force from the gasket during compression of the gasket, thereby improving the stability of the nut installation and preventing the nut from rotating, thereby preventing the nut from loosening and ensuring the stable installation of the wire hanger.

[0011] As a preferred solution of the utility model, the number of the bolts is four, which are symmetrically arranged on both sides of the top plate. Two bolts are arranged on both sides of the top plate respectively to tighten the top plate and the bottom plate arranged opposite to each other, so that the top plate and the bottom plate are installed more firmly on the bridge beam body.

[0012] As a preferred solution of the utility model, the conductor hanger is a channel steel, which is a long steel strip with a groove-shaped cross section, has high bending rigidity and load-bearing capacity under the premise of being light in weight, and can stably bear the load of large structures.

[0013] As a preferred solution of the utility model, the wire hanger is provided with a plurality of gussets, which are evenly arranged along the length direction of the wire hanger, so as to improve the strength of the entire wire hanger and be welded with the flange of the main limb to make it have greater rigidity to withstand transverse shear force.

[0014] As a preferred solution of the utility model, the conductor suspension column is provided with a lightning arrester shoulder frame mounting hole group, a positive feeder shoulder frame mounting hole group and a protection line shoulder frame mounting hole group from top to bottom, so as to facilitate the installation of the lightning arrester shoulder frame, the positive feeder shoulder frame and the protection line shoulder frame on the conductor suspension column, thereby facilitating the hanging of the lightning arrester, the positive feeder and the protection line.

[0015] As a preferred solution of the utility model, the center distance between the lightning arrester shoulder mounting hole group and the positive feeder shoulder mounting hole group is d, 1100mm≤d≤1300mm, ensuring that the lightning arrester and the positive feeder maintain a sufficient safety distance after installation to avoid interference with each other.

[0016] As a preferred solution of the utility model, the center distance between the positive feeder shoulder mounting hole group and the protection line shoulder mounting hole group is D, 900mm≤D≤1100mm. Ensure that the positive feeder and the protection line maintain a sufficient safety distance after installation to avoid interference with each other.

[0017] As a preferred solution of the utility model, it also includes a stiffening plate, which is connected to the wire hanging column and the bottom plate respectively. The stiffening plate can enhance the connection between the wire hanging column and the bottom plate and ensure the safety of the wire hanging.

[0018] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0019] 1. This application realizes the detachable installation of the wire hanger on the bridge by clamping the top plate and the bottom plate which are detachably connected to each other on the upper and lower sides of the bridge beam;

[0020] 2. No need to perform complicated welding operations on the beam, reducing the difficulty of bridge wiring construction;

[0021] 3. The construction process can be carried out standing on the beam to improve the safety of the construction process;

[0022] 4. The installation position of the wire hanging column can be adjusted according to actual needs, which is more suitable for the installation of wires;

[0023] 5. The construction does not require any destructive operations on the beam, nor does it change the existing structure of the beam, thus avoiding the need for later repairs to the beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an additional wire suspender installation structure for a steel structure bridge of the utility model;

[0025] Figure 2 yes Figure 1 Enlarged view of area A in the middle;

[0026] Figure 3It is a side view of the wire hanger and the bottom plate of the utility model;

[0027] Figure 4 This is a use state diagram of an additional wire suspender installation structure for a steel structure bridge of the utility model;

[0028] Markings in the figure: 1-top plate, 2-bottom plate, 3-connecting assembly, 31-bolt, 4-conductor hanger, 41-lightning arrester shoulder frame mounting hole group, 42-positive feeder shoulder frame mounting hole group, 43-protective wire shoulder frame mounting hole group, 5-nut, 6-gasket, 7-stiffening plate, 8-lightning arrester, 81-lightning arrester shoulder frame, 9-positive feeder, 91-positive feeder shoulder frame, 10-protective wire, 101-protective wire shoulder frame, 11-beam. DETAILED DESCRIPTION

[0029] The utility model is described in detail below in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0031] Example 1

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, the present embodiment is an additional wire hanger installation structure for a steel structure bridge, comprising a top plate 1 and a bottom plate 2, a connecting component 3 is provided between the top plate 1 and the bottom plate 2, the connecting component 3 is detachably connected to the top plate 1 and the bottom plate 2 respectively, and a wire hanger 4 is connected to the lower part of the bottom plate 2.

[0033] When in use, the bottom plate 2 is placed at the bottom of the bridge beam 11, the top plate is placed at the top of the bridge beam 11, and the top plate 1 and the bottom plate 2 are tightened to each other through the connecting component 3, so that the top plate 1 and the bottom plate 2 are clamped at the upper and lower sides of the bridge beam 11, so that the wire hanger 4 can be suspended and installed at the bottom of the bridge beam 11, and then the wire is installed through the wire hanger 4; the present application realizes the detachable installation of the wire hanger 4 on the bridge by clamping the top plate 1 and the bottom plate 2 that are detachably connected to each other at the upper and lower sides of the bridge beam 11, thereby reducing the difficulty of bridge wiring construction and improving the safety of the construction process. Moreover, the installation position of the wire hanger 4 can be adjusted according to actual needs, which also avoids the need to repair the beam 11 at a later stage.

[0034] Specifically, the connecting assembly 3 includes a plurality of bolts 31, which are arranged on both sides of the top plate 1. The top plate 1 and the bottom plate 2 are respectively provided with connecting holes adapted to the bolts 31. Two nuts 5 are sleeved on the bolts 31. The top plate 1 and the bottom plate 2 are arranged between the two nuts 5, thereby realizing a detachable connection between the top plate 1 and the bottom plate 2, so that the top plate 1 and the bottom plate 2 are respectively clamped on the upper and lower sides of the bridge beam 11, thereby realizing a detachable installation of the conductor hanger 4 on the bridge beam 11.

[0035] Furthermore, a gasket 6 is provided between the top plate 1 and the nut 5, and between the bottom plate 2 and the nut 5. The gasket 6 can abut between the nut 5 and the top plate 1 or the bottom plate 2. During the process of the nut 5 compressing the gasket 6, the nut 5 is subjected to a reaction force from the gasket 6, thereby improving the installation stability of the nut 5 and preventing it from rotating, thereby preventing the nut 5 from loosening and ensuring the stable installation of the wire hanger 4.

[0036] Furthermore, the number of the bolts 31 is four, which are symmetrically arranged on both sides of the top plate 1. Two bolts 31 are respectively arranged on both sides of the top plate 1 to tighten the relatively arranged top plate 1 and bottom plate 2 to each other, so that the top plate 1 and bottom plate 2 are installed more firmly on the bridge beam 11.

[0037] Example 2

[0038] like Figure 1 , Figure 3 and Figure 4 As shown, in this embodiment, the difference from Embodiment 1 is that the conductor hanger 4 is a 16a channel steel with a total length of 3000 mm. The channel steel is a long steel strip with a grooved cross-section. It has high bending stiffness and bearing capacity while being light in weight, and can stably withstand the load of large structures.

[0039] Specifically, the conductor hanger 4 is provided with a lightning arrester shoulder frame mounting hole group 41, a positive feeder shoulder frame mounting hole group 42 and a protection line shoulder frame mounting hole group 43 from top to bottom, the lightning arrester 8 is connected to the lightning arrester shoulder frame mounting hole group 41 through the lightning arrester shoulder frame 81, the positive feeder 9 is connected to the positive feeder shoulder frame mounting hole group 42 through the positive feeder shoulder frame 91, and the protection line 10 is connected to the protection line shoulder frame mounting hole group 43 through the protection line shoulder frame 101. The center distance between the lightning arrester shoulder frame mounting hole group 41 and the positive feeder shoulder frame mounting hole group 42 is d, 1100mm≤d≤1300mm, the center distance between the positive feeder shoulder frame mounting hole group 42 and the protection line shoulder frame mounting hole group 43 is D, 900mm≤D≤1100mm, and the above hole groups all include a number of φ18 bolt holes.

[0040] Furthermore, a plurality of gusset plates 44 are provided on the conductor hanger 4, and the gusset plates 44 are evenly arranged along the length direction of the conductor hanger 4, which can improve the strength of the entire conductor hanger 4 and are welded to the main limb flange to make it have greater rigidity for bearing lateral shear force.

[0041] Example 3

[0042] like Figure 1 and Figure 3 As shown, this embodiment is different from Embodiment 2 in that it further includes a stiffening plate 7, which is connected to the wire hanger 4 and the bottom plate 2 respectively. The stiffening plate 7 can enhance the connection between the wire hanger 4 and the bottom plate 2 to ensure the safety of the wire suspension.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel structure bridge additional wire suspender installation structure, characterized in that: The invention comprises a top plate (1) and a bottom plate (2), wherein a connecting assembly (3) is provided between the top plate (1) and the bottom plate (2), wherein the connecting assembly (3) is detachably connected to the top plate (1) and the bottom plate (2), respectively, wherein a wire hanger (4) is connected to the lower part of the bottom plate (2), wherein the connecting assembly (3) comprises a plurality of bolts (31) which are arranged on both sides of the top plate (1), and wherein the top plate (1) and the bottom plate (2) are respectively provided with connecting holes adapted to the bolts (31). The bolt (31) is sleeved with two nuts (5), the top plate (1) and the bottom plate (2) are arranged between the two nuts (5), the conductor hanger (4) is provided with a plurality of gusset plates (44), the plurality of gusset plates (44) are evenly arranged along the length direction of the conductor hanger (4), and the conductor hanger (4) is provided with a lightning protection line shoulder frame mounting hole group (41), a positive feed line shoulder frame mounting hole group (42) and a protection line shoulder frame mounting hole group (43) in sequence from top to bottom.

2. The additional wire suspender installation structure for a steel structure bridge according to claim 1 is characterized in that: A gasket (6) is provided between the top plate (1) and the nut (5), and between the bottom plate (2) and the nut (5).

3. The additional wire suspender installation structure for a steel structure bridge according to claim 1 is characterized in that: The number of the bolts (31) is four, and they are symmetrically arranged on both sides of the top plate (1).

4. The additional wire suspender installation structure for a steel structure bridge according to claim 1, characterized in that: The conductor hanger (4) is a channel steel.

5. The additional wire suspender installation structure for a steel structure bridge according to claim 1, characterized in that: The center distance between the lightning protection line shoulder frame mounting hole group (41) and the positive feed line shoulder frame mounting hole group (42) is d, 1100mm≤d≤1300mm.

6. The additional wire suspender installation structure for a steel structure bridge according to claim 1, characterized in that: The center distance between the positive feeder shoulder frame mounting hole group (42) and the protection line shoulder frame mounting hole group (43) is D, 900mm≤D≤1100mm.

7. The additional wire suspender installation structure for a steel structure bridge according to any one of claims 1 to 6, characterized in that: It also includes a stiffening plate (7), wherein the stiffening plate (7) is connected to the wire hanger (4) and the bottom plate (2) respectively.

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