CN220013341U - Bridge with insulating protector - Google Patents

Abstract

The utility model discloses a bridge with an insulation protection device, which comprises a steel box girder, wherein the insulation protection device is arranged on a box girder bottom plate of the steel box girder. The insulation protection device comprises an insulation box and a plurality of insulation rods; the insulating box is a hollow box body surrounded by insulating plates, and each side surface of the box body, which is vertical to the box girder bottom plate, is fixed on the box girder bottom plate to form a closed space; one end of each insulating rod is fixed on the box girder bottom plate, the other end of each insulating rod is fixed on the inner wall of the bottom plate of the insulating box through a connecting piece, and all insulating rods are located in the inner cavity of the insulating box. Through setting up the insulation case and setting up a plurality of insulating bars in the cavity of insulation case inside, can strengthen insulating effect, prevent to produce the potential safety hazard.

Description

Bridge with insulating protector

Technical Field

The utility model relates to the technical field of bridge construction, in particular to a bridge with an insulation protection device.

Background

For medium cities, road trolleys are a practical and inexpensive option. It is unnecessary to excavate tunnels in the ground, and the investment required for the road trolley line of the same mileage is only one third of that of the underground railway. The electric power of the road electric car drives the vehicle, so that the vehicle can not discharge waste gas, and the vehicle is a pollution-free environment-friendly transportation tool. In actual use, when the electric car passes through the urban overpass from the under-bridge, because the contact net wire of the electric car is a bare conductor, induction static electricity can be generated, and the bridge body of the bridge is electrified, so that potential safety hazards are generated.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides the bridge with the insulation protection device, and solves the problem that the electric car contacts a bridge body to generate static electricity so as to generate potential safety hazard.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the bridge with the insulation protection device comprises a steel box girder, wherein the insulation protection device is installed on a box girder bottom plate of the steel box girder. The insulation protection device comprises an insulation box and a plurality of insulation rods; the insulating box is a hollow box body surrounded by insulating plates, and each side surface of the box body, which is vertical to the box girder bottom plate, is fixed on the box girder bottom plate to form a closed space; one end of each insulating rod is fixed on the box girder bottom plate, the other end of each insulating rod is fixed on the inner wall of the bottom plate of the insulating box through a connecting piece, and all insulating rods are located in the inner cavity of the insulating box.

The beneficial effects of the utility model are as follows: the scheme can avoid static electricity generated by the girder body of the trolley contact overpass by arranging the insulation protection device. The insulating box is arranged, a plurality of insulating rods are arranged in the cavity of the insulating box, a certain space is reserved between the insulating plate and the box girder bottom plate, the insulating effect can be further enhanced, and the airtight box body can prevent dust or other sundries, animals and the like from entering the insulating protection device.

Further, a plurality of sleeves matched with the insulating rods are fixedly arranged on the bottom plate of the box girder, and all the insulating rods are inserted and combined with the sleeves and fixed by connecting pieces; the sleeve is brushed with insulating paint.

The technical scheme has the advantages that: the insulating rod can not be directly fixed with the steel box girder bottom plate together, so that a sleeve is required to be installed on the box girder bottom plate to assist in fixing the insulating rod, and insulating paint is required to be brushed on the sleeve to ensure the integral insulating effect.

Further, corner pieces are fixed at the corners of the inner wall of the insulation box, the corner pieces are used between the insulation plates, and the insulation plates are fixedly connected with the bottom plate of the box girder.

Further, the steel box girder is a structure formed by enclosing a box girder bottom plate, a top plate and a web plate, and a penetrating cavity is formed in the middle of the steel box girder. The bending moment born by the web plate is smaller, and under the condition of meeting the strength requirement, the hollow hole is formed in the middle of the steel box girder, so that the dead weight of the structure can be reduced, the consumption of structural materials can be reduced, and the materials can be saved.

Further, the insulation protection device covers the whole box girder bottom plate in the width direction of the steel box girder. The running direction of the electric car, namely the width direction of the steel box girder, needs to be covered by an insulating plate completely, so that static electricity is prevented from generating accidents.

Further, when the insulating box is formed by overlapping a plurality of insulating plates, the overlapping length between the adjacent insulating plates is 8-12 cm, and the overlapping parts are sealed by insulating glue after being fixedly connected so as to ensure the connection strength and the insulativity of the overlapping parts.

Further, insulating paint is brushed on non-insulating parts of the insulating protection device so as to ensure the overall insulativity of the insulating protection device.

Drawings

FIG. 1 is a schematic illustration of a bridge with insulation protection;

FIG. 2 is a schematic view of an insulation shield apparatus;

1, a steel box girder; 11. a box girder bottom plate; 12. a top plate; 13. a web; 14. a cavity; 2. an insulation protection device; 21. an insulation box; 22. an insulating rod; 23. a corner piece; 3. a connecting piece; 4. a sleeve.

Detailed Description

The following description of the embodiments of the present utility model is provided to facilitate understanding of the present utility model by those skilled in the art, but it should be understood that the present utility model is not limited to the scope of the embodiments, and all the utility models which make use of the inventive concept are protected by the spirit and scope of the present utility model as defined and defined in the appended claims to those skilled in the art.

As shown in fig. 1, the bridge with the insulation protection device in this scheme includes a steel box girder 1, wherein the steel box girder 1 is a structure formed by enclosing a box girder bottom plate 11, a top plate 12 and a web 13, and a through hole 14 is formed in the middle of the steel box girder 1. Because the bending moment born by the web 13 is smaller, under the condition of meeting the strength requirement, the hollow 14 is arranged in the middle of the steel box girder 1, so that the dead weight of the structure can be reduced, the consumption of structural materials can be reduced, and the materials can be saved.

As shown in fig. 2, the insulating protection device 2 is installed on the box girder base plate 11 in the scheme, so that static electricity generated by the contact of an electric car with a girder body of an overpass can be avoided, and potential safety hazards are generated. The insulation protection device 2 comprises an insulation box 21 and a plurality of insulation bars 22, wherein the insulation bars 22 are preferably epoxy resin insulation bars; the insulating box 21 is a hollow box body surrounded by insulating plates, the insulating plates are preferably epoxy resin insulating plates, hard collision and scratch of the insulating plates should be avoided in the processes of storage, scattering, transportation, installation and use, contact with corrosive objects and flammable objects are avoided, fire sources are avoided, the plate surfaces are kept clean, and the insulating plates are strictly forbidden to stand people or heavy objects are placed. Each side surface of the insulating box 21 perpendicular to the box girder bottom plate 11 is fixed on the box girder bottom plate 11, and a closed space is formed between the insulating box 21 and the box girder bottom plate 11, so that dust or other sundries, small animals and the like can be prevented from entering the box body. One end of the insulating rod 22 is fixed on the box girder base plate 11, and the other end is fixed on the inner wall of the base plate of the insulating box 21 through the connecting piece 3, wherein the connecting piece 3 is preferably a self-tapping rivet. All the insulating rods 22 are positioned in the inner cavity of the insulating box 21, and after the insulating rods 22 are installed, tensile strength and bending strength tests are required to be carried out, so that firm connection is ensured.

The structure of the insulation protection device 2 can ensure that a certain space is reserved between the insulation board and the box girder bottom plate 11, and can further strengthen the insulation effect. When the insulating plate is used as an insulating medium between the box girder base plate 11 and the charged body, and the charged body is close to the insulating plate, surface discharge may occur between the charged body and the insulating plate. This arrangement provides an air gap between the insulating plate and the beam base plate 11 to form a secondary insulation. And most of the voltage can be applied to the air gap, and the voltage born on the insulating plate is lower, so that the surface discharge can be effectively prevented, the service life of the insulating plate is prolonged, and the insulating effect is further enhanced.

Specifically, the box girder bottom plate 11 is fixedly provided with a plurality of sleeves 4 matched with the insulating rods 22, all the insulating rods 22 are inserted with the sleeves 4 and fixed by the connecting piece 3, the sleeves 4 are preferably steel sleeves, the strength is high, and insulating paint needs to be brushed on the sleeves 4 to ensure the integral insulating effect; the connection 3 here is preferably a bolt. Corner pieces 23 are fixed at corners of the inner wall of the insulating box 21, the corner pieces 23 are used between insulating plates, and the insulating plates are fixedly connected with the box girder bottom plate 11. All non-insulating parts of the insulation protection device 2, such as the corner piece 23 and the connecting piece 3, are painted with insulating paint to ensure the overall insulation effect of the insulation protection device 2.

In this embodiment, the insulating protection device 2 preferably covers the entire bottom plate 11 of the steel box girder 1 in the width direction thereof, and the traveling direction of the electric car, that is, the width direction of the steel box girder 1, needs to be covered with an insulating plate, thereby preventing occurrence of static electricity.

In one embodiment, when the insulation box 21 is formed by overlapping a plurality of insulation plates, the overlapping length between adjacent insulation plates is 8-12 cm, preferably 10cm, and the overlapping parts are sealed by using insulation glue after fixedly connecting by bolts so as to ensure the connection strength and insulation of the overlapping parts.

To sum up, this scheme is through setting up insulation box 21 and setting up a plurality of insulating bars 22 in the cavity inside of insulation box 21, can strengthen insulating effect, prevents to produce the potential safety hazard.

Claims (7)

1. Bridge with insulating protector, its characterized in that: the steel box girder comprises a steel box girder (1), wherein an insulation protection device (2) is arranged on a box girder bottom plate (11) of the steel box girder (1);

the insulation protection device (2) comprises an insulation box (21) and a plurality of insulation rods (22); the insulation box (21) is a hollow box body surrounded by insulation plates, and each side surface of the box body, which is vertical to the box girder bottom plate (11), is fixed on the box girder bottom plate (11) to form a closed space; one end of each insulating rod (22) is fixed on the box girder bottom plate (11), the other end of each insulating rod is fixed on the inner wall of the bottom plate of the insulating box (21) through a connecting piece (3), and all the insulating rods (22) are located in the inner cavity of the insulating box (21).

2. The bridge with insulation protection device of claim 1, wherein: the box girder bottom plate (11) is fixedly provided with a plurality of sleeves (4) matched with the insulating rods (22), and all the insulating rods (22) are inserted with the sleeves (4) and fixed by connecting pieces (3); and insulating paint is brushed on the sleeve (4).

3. The bridge with insulation protection device of claim 1, wherein: corner pieces (23) are fixed at the corners of the inner wall of the insulation box (21).

4. The bridge with insulation protection device of claim 1, wherein: the steel box girder (1) is a structure formed by enclosing a box girder bottom plate (11), a top plate (12) and a web plate (13), and a penetrating cavity (14) is formed in the middle of the steel box girder (1).

5. The bridge with insulation protection device of claim 1, wherein: the insulation protection device (2) covers the whole box girder bottom plate (11) in the width direction of the steel box girder (1).

6. The bridge with insulation protection device of claim 1, wherein: when the insulating box (21) is formed by overlapping a plurality of insulating plates, the overlapping length between the adjacent insulating plates is 8-12 cm, and the overlapping parts are sealed by insulating glue after being fixedly connected.

7. A bridge with insulation protection device according to any one of claims 1-3, characterized in that: insulating paint is brushed on non-insulating parts of the insulating protection device (2).