Cable protection bridge groove for bridge expansion joint

Abstract

The utility model discloses a cable protection bridge groove for a bridge expansion joint, which comprises a bridge groove shell and a bridge groove cover body, cable inlets and outlets are arranged at two ends of the bridge groove shell in the length direction, and the length of the bridge groove cover body does not exceed the length of the bridge groove shell; a plurality of shell connecting lug plates are arranged on the two sides of the bridge groove shell, a plurality of cover body connecting lug plates are arranged on the two sides of the bridge groove cover body, and the cover body connecting lug plates and the shell connecting lug plates are in one-to-one correspondence and are detachably connected through fasteners; connecting edges are arranged at cable inlets and outlets in the two ends of the bridge groove shell respectively, connecting holes are formed in the connecting edges, and the connecting edges are used for being connected with building structures on the two sides of an expansion joint. The cable protection bridge groove is simple in structure, easy to manufacture, install and use and low in cost, the cable can be better protected through matched arrangement of the bridge groove shell and the bridge groove cover, the safety problem caused by cable damage is avoided, and the service life of the cable can be prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cable protection, in particular to a cable protection bridge trough for a bridge expansion joint. Background Art

[0002] During the construction of prefabricated bridges, expansion joints are reserved when splicing the bridge bottom plates to ensure that the bridge bottom plates can compensate for thermal expansion and contraction, thereby ensuring the safety of the bridge. In order to ensure that the communication and power cables on the bridge pass through, cable troughs are usually set on the bottom plates. The communication and power cables are arranged along the cable troughs, but the cable troughs are disconnected at the expansion joints, so that the cables are suspended when passing through the expansion joints, and the cables cannot be effectively supported at the expansion joints; and when there is a drop in the bridge structure on both sides of the expansion joint, the cable troughs will be unevenly stressed. When the bridge vibrates, the cables will be suspended and frequent friction will occur at the drop, causing damage to the cable sheath, causing damage to the cables, and causing safety hazards.

[0003] In the prior art, additional protective devices are also provided at the expansion joints to protect the cables. These devices either have structural deficiencies and limited protective effects, or have relatively complex structures. Although the protective effects and service life are improved, the manufacturing costs are relatively high. Summary of the invention

[0004] The utility model aims to provide a cable protection bridge trough for bridge expansion joints in view of the problems existing in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A cable protection bridge trough for a bridge expansion joint, comprising a bridge trough shell and a bridge trough cover, wherein the bridge trough cover is arranged above the bridge trough shell, and the bridge trough shell is provided with cable inlets and outlets at both ends in the length direction, and the length of the bridge trough cover does not exceed the length of the bridge trough shell; a plurality of shell connecting ear plates are provided on both sides of the bridge trough shell, and a plurality of cover connecting ear plates are provided on both sides of the bridge trough cover, and the cover connecting ear plates correspond to the shell connecting ear plates one by one and are detachably connected through fasteners; the bridge trough shell is provided with connecting edges at the cable inlets and outlets at both ends, and the connecting edges are provided with connecting holes, and the connecting edges are used to connect the building structures on both sides of the expansion joint.

[0007] The cable protection bridge trough for the bridge expansion joint has a simple structure, is easy to manufacture, install and use, and has a low cost. Moreover, through the coordinated arrangement of the bridge trough shell and the bridge trough cover, the cables can be better protected, especially the cables suspended in the bridge expansion joint have a strong protective effect, which can avoid safety problems caused by cable damage and increase the service life of the cables.

[0008] The bridge slot cover body is arranged on the bridge slot shell to close the space above it, but it will not block the cable inlet and outlet on both sides. Moreover, the limitation on its length can ensure that the connecting edge is in a position for connecting and installing, and will not affect the connection, fixation and installation operation of the connecting edge and the main structure of the building.

[0009] The one-to-one arrangement of the cover connecting ear plate and the shell connecting ear plate, combined with the use of the fasteners, is not only convenient for connection, but also can ensure that the bridge slot cover is fully covered in the width direction after connection, and is also easy to disassemble.

[0010] Furthermore, the bridge slot shell includes a bridge slot bottom plate and a pair of bridge slot side plates integrally formed with the bridge slot bottom plate; the bridge slot bottom plate includes a long straight section, and arc-shaped transition sections are respectively provided at both ends of the long straight section, and the arc-shaped transition sections are connected to the connecting edges.

[0011] Furthermore, the bridge groove side plates are connected to the bridge groove bottom plate by an arc transition, and the bridge groove side plates have an inclination of 1 to 5 degrees relative to the vertical direction of the bridge groove bottom plate.

[0012] Furthermore, there is a vertical spacing of 20 to 50 mm between the connecting edge and the bottom plate of the bridge groove.

[0013] Furthermore, the length of a single bridge slot shell is 400 to 1000 mm, the length of the bridge slot cover is 35 to 100 mm shorter than the length of the bridge slot shell, the main body depth of the bridge slot shell is 80-150 mm, the width of the bridge slot shell is at least 150 mm, and the thickness of the bridge slot shell and the bridge slot cover are 3 to 8 mm respectively.

[0014] Furthermore, an accommodating groove is provided above the cover connecting ear plate and at the bottom of the shell connecting ear plate respectively.

[0015] Furthermore, the cover connecting ear plates and the shell connecting ear plates are arranged in pairs at intervals, and the interval distance is 250-300mm.

[0016] Furthermore, the bridge slot housing is an integrally formed structure, or a multi-section spliced ​​structure.

[0017] Compared with the prior art, the utility model has the following beneficial effects: 1. The cable protection bridge groove for bridge expansion joints has a simple structure, is easy to manufacture, install and use, and has a low cost. Moreover, through the coordinated arrangement of the bridge groove shell and the bridge groove cover, the cables can be better protected, especially the cables suspended at the bridge expansion joints have a strong protective effect, which can avoid the safety problems caused by cable damage and improve the service life of the cables; 2. The one-to-one arrangement of the cover connecting ear plate and the shell connecting ear plate, in conjunction with the use of the fasteners, is not only convenient for connection, but also can ensure that the bridge groove cover after connection is fully covered in the width direction, and is also easy to disassemble; 3. The receiving groove on the cover connecting ear plate can accommodate the head of the bolt to prevent it from protruding, and the receiving groove on the shell connecting ear plate can accommodate the nut, which plays a certain anti-loosening role; 4. When the bridge vibrates, the protective bridge groove can also offset part of the vibration by itself, reducing the vibration force on the cable, using itself to replace the cable and the bridge friction, reducing the friction coefficient, reducing the probability of cable sheath damage, and improving the service life and safety of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the top view of the structure of a cable protection bridge trough for a bridge expansion joint according to the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a cable protection bridge trough for a bridge expansion joint according to the utility model when viewed from above;

[0020] Figure 3 for Figure 1 Schematic diagram of the AA section structure;

[0021] Figure 4 for Figure 1 Schematic diagram of the BB cross-section structure;

[0022] Figure 5 This is a schematic diagram of another structure of a bridge slot cover with a branching rod according to the utility model;

[0023] In the figure: 1. bridge slot shell; 101. bridge slot bottom plate; 102. bridge slot side plate; 2. bridge slot cover; 3. shell connecting ear plate; 4. cover connecting ear plate; 5. fastener; 6. accommodating groove; 7. long straight section; 8. arc-shaped transition section; 9. connecting edge; 10. connecting hole; 11. connecting seat; 12. connecting rod; 13. locking nut; 14. branching rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution 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.

[0025] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. Example 1

[0026] like Figure 1 to Figure 4 As shown, a cable protection bridge trough for a bridge expansion joint comprises a bridge trough shell 1 and a bridge trough cover 2, wherein the bridge trough cover 2 is arranged on top of the bridge trough shell 1, and the bridge trough shell 1 is provided with cable inlets and outlets at both ends in the length direction, and the length of the bridge trough cover 2 does not exceed the length of the bridge trough shell 1; a plurality of shell connecting ear plates 3 are arranged on both sides of the bridge trough shell 1, and a plurality of cover connecting ear plates 4 are arranged on both sides of the bridge trough cover 2, and the cover connecting ear plates 4 correspond one-to-one to the shell connecting ear plates 3 and are detachably connected through fasteners 5; the bridge trough shell 1 is provided with connecting edges 9 at the cable inlets and outlets at both ends, and the connecting edges 9 are provided with connecting holes 10, and the connecting edges 9 are used to connect the building structures on both sides of the expansion joint.

[0027] The cable protection bridge trough for bridge expansion joints has a simple structure and is easy to install and use. Through the coordinated arrangement of the bridge trough shell 1 and the bridge trough cover 2, the cables can be better protected, especially the cables suspended at the bridge expansion joints. It can avoid safety problems caused by cable damage and increase the service life of the cables.

[0028] The bridge slot cover 2 is covered on the bridge slot shell 1 to close the space above it, but it will not block the cable inlet and outlet on both sides. Moreover, the limitation on its length can ensure that the connecting edge 9 is in a connectable and installable position without affecting the connection, fixation and installation operation of the connecting edge and the main structure of the building.

[0029] The one-to-one arrangement of the cover connecting ear plate 4 and the shell connecting ear plate 3, combined with the use of the fastener 5, is not only convenient for connection, but also can ensure that the bridge slot cover is fully covered in the width direction after connection, and is also easy to disassemble.

[0030] Furthermore, the bridge groove shell 1 includes a bridge groove bottom plate 101 and a pair of bridge groove side plates 102 integrally formed with the bridge groove bottom plate 101; the bridge groove bottom plate 101 includes a long straight section 7, and arc-shaped transition sections 8 are respectively provided at both ends of the long straight section 7, and the arc-shaped transition sections 8 are connected to the connecting edges 9.

[0031] The cross-section of the bridge trough shell 1 is a U-shaped structure. The long straight section 7 of the bridge trough bottom plate 101 can better support the cables, and the arc-shaped transition section 8 can lift the cables, which is beneficial for the protective bridge trough to cross the height difference of the installation area and is also beneficial for the cable routing. Together with the bridge trough side plates 102 on both sides, it can basically prevent cables (such as cables) from rubbing against the bridge during movement or shaking, so as to avoid damage to the cable sheath.

[0032] When the bridge vibrates, the protective bridge trough can offset part of the vibration by itself, reducing the vibration force on the cable. It uses itself to replace the friction between the cable and the bridge, reduces the friction coefficient, reduces the chance of damage to the cable sheath, and improves the service life and safety of the cable.

[0033] Furthermore, the bridge slot side plate 102 is connected to the bridge slot bottom plate 101 by an arc transition. The setting of the arc transition can avoid the generation of sharp angles or right angles on both sides of the length direction. On the one hand, it is beneficial to the stress release of the bridge slot shell itself, and on the other hand, it can also reduce the movement friction of the cable.

[0034] The bridge groove side plate 102 has an inclination of 1 to 5 degrees relative to the vertical direction of the bridge groove bottom plate 101, and is preferably inclined outward by 3 degrees, so that the bridge groove side plate 102 will not be vertical, nor will it be inclined inward to compress the cables set at the corners on both sides, and it is also easy to demould during its production.

[0035] Furthermore, there is a vertical spacing of 20 to 50 mm, preferably 30 mm, between the connecting edge 9 and the bridge groove bottom plate 101; this allows the bridge groove shell to have an installation height difference, which is beneficial for its installation at the expansion joint of the bridge.

[0036] Furthermore, the length of a single bridge slot shell is 400 to 1000 mm, the length of the bridge slot cover is 35 to 100 mm shorter than the length of the bridge slot shell, the main body depth of the bridge slot shell is 80-150 mm, the width of the bridge slot shell is at least 150 mm, and the thickness of the bridge slot shell and the bridge slot cover are 3 to 8 mm respectively.

[0037] In this embodiment, the total length of a single bridge slot shell is 700 mm, the length of the bridge slot cover is 638 mm, the main body depth of the bridge slot shell is 118 mm, the opening width of the bridge slot shell is 195 mm, and the thickness of the bridge slot shell and the bridge slot cover are 5 mm respectively. The width of the bridge slot cover is slightly larger than the opening width of the bridge slot shell, and a step structure can be set at the mating surface of the two to facilitate the mating connection of the two. With this size, the protective bridge slot is not only simple in structure but also beautiful in appearance, and can accommodate multiple bundles of cables and better cover the expansion joint of the bridge.

[0038] Furthermore, a receiving groove 6 is respectively provided above the cover connecting ear plate 4 and at the bottom of the shell connecting ear plate 3, and the fastener 5 can be a combination of a bolt, a nut and a gasket.

[0039] The receiving groove 6 is a countersunk structure. The receiving groove on the cover body connecting ear plate 4 can accommodate the head of the bolt to prevent it from protruding. The receiving groove on the shell connecting ear plate 3 can accommodate the nut to play a certain anti-loosening role.

[0040] Furthermore, the cover connecting ear plates 4 and the shell connecting ear plates 3 are arranged in multiple pairs at intervals of about 290 mm. The multiple pairs are symmetrically arranged, which can more stably connect the bridge slot shell and the bridge slot cover.

[0041] Furthermore, the bridge slot housing 1 and the bridge slot cover 2 are integrally formed structures and can be mass-produced by molds. In some embodiments, the bridge slot housing 1 can also be a multi-section splicing structure, and the outer side of the splicing end face of each section is respectively provided with corresponding small ears, and the small ears can be fastened by bolt connection; the splicing end face of each section can also be respectively provided with a plug-in column and a plug-in hole, and the plug-in column is plugged into the plug-in hole to form a connection relationship.

[0042] Furthermore, the bridge slot shell 1 and the bridge slot cover 2 are respectively made of unsaturated resin polymer materials, such as a polymer compound containing double bonds generated by a condensation reaction of a dibasic acid and a diol. The material itself has a large molecular weight, tight molecular bonds, and strong chemical stability. After adding various auxiliary agents such as glass fiber, filler, and anti-aging agent, it is cured into an insoluble and infusible polymer network polymer through high-temperature molding. The protective bridge slot made of this material and process has the characteristics of light weight, easy handling and installation, high strength, excellent weather resistance, corrosion resistance and wear resistance, and has the advantages of flame retardancy and insulation. Example 2

[0043] This embodiment provides another structure of a bridge slot cover.

[0044] like Figure 5As shown, the bridge slot cover 2 is provided with a plurality of movable and adjustable dividing rods 14 at the cable inlet and outlet. Specifically, it includes a connecting seat 11 connected to the bridge slot cover 2, and the connecting seat 11 is connected to the lower part of the connecting seat 11. The arrangement of these dividing rods 14 can separate the cable inlet and outlet into a plurality of areas, which is conducive to the orderly and regular installation of cables in the bridge slot, and avoids cable entanglement and confusion.

[0045] The branching rod 14 can be rotatably connected to the connecting seat, or the shaft of the branching rod can be connected to the connecting seat, and a roller is arranged on the shaft outer shell, so that it can rotate, which is convenient for cable laying and moving. A protective sleeve with a low friction coefficient can also be arranged on the outer periphery of the branching rod 14 to prevent the cable from being worn when passing through.

[0046] The bridge slot cover 2 is provided with an oblong long hole, and the connecting rod on the connecting seat 11 passes through the oblong long hole and is fastened by a gasket and a locking nut. Through such a setting, the position and spacing of the dividing rod 14 can be adjusted according to needs, and can be locked after adjustment.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable protection bridge trough for a bridge expansion joint, characterized in that: It comprises a bridge slot shell and a bridge slot cover, wherein the bridge slot cover is arranged on top of the bridge slot shell, the bridge slot shell is provided with cable inlets and outlets at both ends in the length direction, and the length of the bridge slot cover does not exceed the length of the bridge slot shell; a plurality of shell connecting ear plates are arranged on both sides of the bridge slot shell, and a plurality of cover connecting ear plates are arranged on both sides of the bridge slot cover, the cover connecting ear plates correspond one-to-one to the shell connecting ear plates and are detachably connected through fasteners; the bridge slot shell is provided with connecting edges at the cable inlets and outlets at both ends, the connecting edges are provided with connecting holes, and the connecting edges are used to connect the building structures on both sides of the expansion joint.

2. The cable protection bridge trough for bridge expansion joints according to claim 1 is characterized in that: The bridge slot housing includes a bridge slot bottom plate and a pair of bridge slot side plates integrally formed with the bridge slot bottom plate; the bridge slot bottom plate includes a long straight section, and arc-shaped transition sections are respectively provided at both ends of the long straight section, and the arc-shaped transition sections are connected to the connecting edges.

3. The cable protection bridge trough for bridge expansion joints according to claim 2 is characterized in that: The bridge groove side plates are connected to the bridge groove bottom plate in an arc transition, and the bridge groove side plates have an inclination of 1 to 5 degrees relative to the vertical direction of the bridge groove bottom plate.

4. The cable protection bridge trough for bridge expansion joints according to claim 2 is characterized in that: There is a vertical spacing of 20 to 50 mm between the connecting edge and the bottom plate of the bridge groove.

5. The cable protection bridge trough for bridge expansion joints according to claim 1 is characterized in that: The length of a single bridge slot shell is 400 to 1000 mm, the length of the bridge slot cover is 35 to 100 mm shorter than the length of the bridge slot shell, the main body depth of the bridge slot shell is 80-150 mm, the width of the bridge slot shell is at least 150 mm, and the thickness of the bridge slot shell and the bridge slot cover are 3 to 8 mm respectively.

6. The cable protection bridge trough for bridge expansion joints according to claim 1, characterized in that: The upper part of the cover connecting ear plate and the bottom part of the shell connecting ear plate are respectively provided with accommodating grooves.

7. The cable protection bridge trough for bridge expansion joints according to claim 1, characterized in that: The cover connecting ear plates and the shell connecting ear plates are arranged in pairs at intervals, and the interval distance is 250-300mm.

8. The cable protection bridge trough for bridge expansion joints according to claim 1, characterized in that: The bridge slot housing is an integrally formed structure or a multi-section spliced ​​structure.

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