Protective pipe body of bridge inhaul cable

Abstract

The invention discloses a protective pipe body of a bridge inhaul cable. The protective pipe body comprises a first pipe body, a second pipe body and a fixing bolt, the outer walls of the two sides of the first pipe body are fixedly provided with lug plates distributed along the whole length of the first pipe body respectively, the lug plates extend towards the opening end of the first pipe body respectively, and containing cavities are formed between the outer walls of the two sides of the first pipe body and the corresponding lug plates. The two sides of the opening end of the second pipe body are buckled to the corresponding containing cavities correspondingly, and the fixing bolts are used for fixedly connecting the lug plates and the second pipe body. And the accommodating cavity is also filled with a sealing material. According to the protective pipe body of the bridge inhaul cable, the influence of errors in the pipe body design and manufacturing process can be reduced, meanwhile, the sealing performance is improved, and the water immersion depth can be visually observed through the fixing bolts with the color developing materials and the observation windows.

Description

Technical Field

[0001] The invention relates to the technical field of bridge cable structure protection, and in particular to a protective pipe body for a bridge cable. Background Art

[0002] In cable bridges, cables are important load-bearing components. Now, integrated sealing covers are often used for finished cables to prevent the cable body from being damaged by adverse external factors. This method has four problems: First, it is difficult to install the integrated steel pipe on site. Generally, it is installed when the cable is completed. For longer cable components, it is difficult to transport after pre-installation; second, it is difficult to disassemble. When it is necessary to disassemble and replace the protective device, the cost is high and it is not easy to construct; third, there is an error between the outer diameter of the cable body and the inner diameter of the steel pipe during the design, manufacturing and installation process, which causes the problem of eccentricity and difficulty in sealing; fourth, the fireproof material will affect its fireproof performance under water immersion corrosion conditions, and it is difficult to monitor its immersion depth in the sealing sheath. In the prior art, Chinese patent CN104695326B discloses a sheath for bridge cables, including a hollow tube body, which is formed by a first arc-shaped plate and a second arc-shaped plate that match each other, and the long sides of the first arc-shaped plate are respectively provided with connecting plates, and the first arc-shaped plate is connected and fixed to the second arc-shaped plate through the two connecting plates. The connection method of the two arc plates and the connecting plate in the prior art requires high processing accuracy and has poor sealing effect on the cable body. Chinese patent CN113503340A discloses a cable with a high temperature resistant protective structure and its assembly method, the cable including a cable body, a wrapping tape, a metal tube, and a seal. The metal tube includes a semicircular stainless steel tube, a partition, and a pin tube. The partition and the pin tube are welded to the semicircular stainless steel tube, and then the two semicircular stainless steel tubes are wrapped on the cable body and fixed by the pin tubes on both sides. The prior art needs to splice the two semicircular stainless steel tubes and fix them by corresponding pin tubes. Therefore, it has high processing accuracy requirements and only installs the seal on the top of the spliced ​​steel tube, that is, the sealing effect of the fireproof material inside the cable body is poor. Summary of the invention

[0003] In view of the above problems, the present invention provides a protective tube body for bridge cables, aiming to solve the problems in the prior art such as high processing precision requirements for cable shells, poor sealing performance, and inability to intuitively perceive the sealing performance.

[0004] The present invention adopts the following technical solutions to achieve the above purpose:

[0005] A protective tube body for a bridge cable, the protective tube body comprising a first tube body and a second tube body, both of which have semicircular cross-sections, and fixing bolts; wherein, the outer walls on both sides of the first tube body are respectively fixed with ear plates arranged along the entire length of the tube body, the ear plates respectively extend toward the opening end of the first tube body, and a receiving cavity is formed between the outer walls on both sides of the first tube body and the corresponding ear plates; the two sides of the opening end of the second tube body are respectively buckled in the corresponding receiving cavity, and the fixing bolts are used to fix the ear plates and the second tube body; the receiving cavity is also filled with sealing material.

[0006] In this technical solution, a receiving cavity with a certain spacing is provided between the two sides of the first tube body and the corresponding ear plate, so that the two sides of the open end of the second tube body can be respectively inserted into the corresponding receiving cavity, which can reduce the influence of the errors in the tube body design and manufacturing process; the fixing method of the fixing bolt is that a row of bolt holes matching with it is provided on the ear plate, and the second tube body is fixed by clamping the second tube body with the fixing bolt, or on this basis, a limiting part matching with the fixing bolt is added to the outer wall of the second tube body to further prevent the second tube body from leaving the receiving cavity, or the fixing method of matching the fixing bolt with the threaded hole in the following technical solution is adopted; at the same time, the sealing material is poured into the receiving cavity to improve the sealing performance of the protective tube body. In addition, the split snap-fit ​​installation structure is adopted, which can facilitate transportation, splicing, installation and disassembly.

[0007] A further technical solution is that the ear plate, the first tube body and the second tube body are provided with matching bolt holes, and the fixing bolts pass through the bolt holes of the ear plate, the second tube body and the first tube body in sequence. In this technical solution, the fixing bolts are connected to the ear plate, the first tube body and the second tube body, which can further improve the stability of the protective tube body, thereby improving the sealing performance of the sealing material of the accommodating cavity.

[0008] A further technical solution is that the fixing bolt is a hollow structure, the hollow structure of the threaded end is filled with water immersion coloring material, and the hollow structure of the nut end is provided with a sealed observation window. In this technical solution, the fixing bolt with coloring material and observation window can produce a coloring reaction after the protective tube body is immersed in water, and the water immersion depth can be visually observed.

[0009] A further technical solution is that the ear plate is welded to the outer wall of the first tube body.

[0010] A further technical solution is that the protective tube body comprises two or more matching first and second tube bodies, the inner walls of the adjacent first tube body ends are respectively provided with matching first semicircular protrusions, and the inner walls of the adjacent second tube body ends are respectively provided with matching second semicircular protrusions at the corresponding first semicircular protrusion positions; a waterproof coating is provided between the matching first semicircular protrusions and the matching second semicircular protrusions. This technical solution is suitable for longer cable structures, and each section of the protective tube body is welded and connected, and a waterproof coating is added at the joints, which can improve the sealing performance of the protective tube body.

[0011] The beneficial effects of the present invention are:

[0012] The present invention provides a protective pipe body for a bridge cable. By adding ear plates on both sides of the first pipe body, a cavity for accommodating the part of the second pipe body to be fixed and the sealing material is formed, which can reduce the influence of errors in the pipe body design and manufacturing process, and improve the sealing performance of the protective pipe body. The split snap-fit ​​installation structure is adopted, which can facilitate transportation, splicing, installation and disassembly. In addition, by adopting fixing bolts with color-developing materials and observation windows, a color-developing reaction can occur after the protective pipe body is immersed in water, and the water immersion depth can be observed intuitively. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : A schematic diagram of the structure of the protective tube body of the present invention.

[0014] Figure 2 : A structural schematic diagram of a first fixing method of the fixing bolt according to the present invention.

[0015] Figure 3 : A structural schematic diagram of the second fixing method of the fixing bolt described in the present invention.

[0016] Figure 4 Schematic diagram of the waterproof structure between the two sections of the pipe body according to the present invention.

[0017] In the figure:

[0018] 1. First tube body; 11. First ear plate; 110. First accommodating cavity; 12. Second ear plate; 120. Second accommodating cavity; 13. First semicircular protrusion; 3. Fixing bolt; 30. Opening structure. DETAILED DESCRIPTION

[0019] The following is combined with Figures 1 to 4 The present invention is described in detail with specific implementation modes. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0020] like Figure 1 to Figure 2As shown, this embodiment provides a protective tube body for a bridge cable, the protective tube body comprising a first tube body 1 and a second tube body 2, both of which have semicircular cross-sections, and fixing bolts 3; wherein, the outer walls on both sides of the first tube body 1 are respectively fixed with a first ear plate 11 and a second ear plate 12 arranged along the entire length of the tube body, the first ear plate 11 and the second ear plate 12 respectively extend toward the opening end of the first tube body 1, and the outer walls on both sides of the first tube body 1 and the first ear plate 11 and the second ear plate 12 respectively form a first accommodating cavity 110 and a second accommodating cavity 120; the two sides of the opening end of the second tube body 2 are respectively buckled in the corresponding accommodating cavities, and the fixing bolts 3 are used to fix the ear plates and the second tube body 2; the first accommodating cavity 110 and the second accommodating cavity 120 are also filled with sealing material.

[0021] The specific installation process is as follows: the first ear plate 11 and the second ear plate 12 are firmly welded to the outer walls of both sides of the first tube body 1, and a row of bolt holes are left on each ear plate. After the ear plate and the first tube body 1 are welded, the weld is polished and the sharp corners are rounded. Bolt holes matching the ear plates are left on both sides of the opening end of the second tube body 2, wherein the first tube body 1, the second tube body 2 and the ear plates are all made of steel plates; the first tube body 1 and the second tube body 2 are buckled onto the outside of the cable and fixedly connected by the fixing bolts 3, and sealing materials are poured into the first accommodating cavity 110 and the second accommodating cavity 120; the fixing method of the fixing bolts 3 is as follows: The fixing bolts 3 pass through the bolt holes corresponding to the ear plates and the second tube body 2 in sequence, and the first tube body 1 is fixed by clamping the first tube body 1 with top depth; in this embodiment, the first tube body 1 forms a first accommodating cavity 110 and a second accommodating cavity 120 with a certain distance between the first ear plates 11 and the second ear plates 12, respectively, so that the two sides of the opening end of the second tube body 2 can be inserted into the corresponding accommodating cavities respectively, which can reduce the influence of the errors in the tube body design and manufacturing process; at the same time, the sealing material is poured into the first accommodating cavity 110 and the second accommodating cavity 120, which can improve the sealing performance of the protective tube body. In addition, the split buckle-type installation structure is adopted, which can facilitate transportation, splicing, installation and disassembly.

[0022] Another implementation mode, based on the above implementation mode, is as follows Figure 3 As shown, threaded holes matching the corresponding ear plates and the second tube body 2 are respectively provided on both sides of the first tube body 1, and the fixing bolts 3 pass through the bolt holes of the ear plates, the second tube body 2, and the first tube body 1 in sequence to fix the first tube body 1 and the second tube body 2.

[0023] Another embodiment, based on the above embodiment, the protective tube body is buckled with the outside of the cable fireproof material layer. After the cable is installed, the fireproof material layer is wrapped on the outer surface of the cable. The fireproof material is one of a fireproof blanket, a fireproof cloth or a fireproof cotton. The fixing bolt 3 is a hollow structure, and the hollow structure 30 at its threaded end is filled with a water-immersion color-developing material, specifically a water-absorbing color-changing silica gel. The hollow structure at its nut end is provided with a sealed observation window. This embodiment uses a fixing bolt 3 with a water-immersion color-developing material and an observation window, which can produce a color reaction after the protective tube body is immersed in water, and the water immersion depth can be visually observed.

[0024] The above-mentioned embodiments exemplarily show the specific connection method between the ear plate and the first tube body 1, and the specific fixing method of the fixing bolt 3. In other embodiments or practical applications, other methods can be used instead: the ear plate and the first tube body 1 can also be fixedly connected in an integrally formed manner; as for the fixing method of the fixing bolt 3, only a row of bolt holes matching the ear plate is provided, and the fixing bolt 3 is passed through the ear plate and then clamped to the corresponding outer wall of the second tube body 2, or on this basis, a limiting portion matching the fixing bolt 3 is added to the outer wall of the second tube 2 to further prevent the second tube body 2 from escaping from the accommodating cavity.

[0025] In another embodiment, in order to meet the requirements of long cable protection for long span bridges, the protective pipe body can be installed in a multi-section splicing manner, and connected by welding after transportation to the site. In order to meet the waterproof performance of the splicing, the protective pipe body of this embodiment includes two sections of a first pipe body 1 and a second pipe body 2 that match each other. Figure 4 As shown, the inner walls of the adjacent ends of the two sections of the first tube body 1 are respectively provided with matching first semicircular protrusions 13, and the inner walls of the adjacent second tube body ends are respectively provided with matching second semicircular protrusions at the corresponding positions of the first semicircular protrusions 13; a waterproof coating is provided between the matching first semicircular protrusions 13 and the matching second semicircular protrusions, each section of the protective tube body is welded and connected, and a waterproof coating is added at the joints, which can improve the sealing performance of the protective tube body.

[0026] The present invention provides a protective pipe body for a bridge cable. By adding ear plates on both sides of a first pipe body 1, a receiving cavity for receiving a portion of a second pipe body 2 to be fixed and a sealing material is formed, which can reduce the influence of errors in the pipe body design and manufacturing process, and improve the sealing performance of the protective pipe body. By adopting a split snap-fit ​​installation structure, it can be convenient for transportation, splicing, installation and disassembly. By adopting a fixing bolt 3 with a color-developing material and an observation window, a color-developing reaction can occur after the protective pipe body is immersed in water, and the depth of water immersion can be visually observed.

Claims

1. A protective pipe body for a bridge cable, characterized in that: The protective tube body comprises a first tube body and a second tube body, both of which have semicircular cross-sections, and a fixing bolt; Wherein, the outer walls on both sides of the first tube body are respectively fixed with ear plates arranged along the entire length of the tube body, and the ear plates extend toward the opening ends of the first tube body respectively, and a receiving cavity is formed between the outer walls on both sides of the first tube body and the corresponding ear plates; Both sides of the opening end of the second tube body are buckled in the corresponding accommodating cavity respectively, and the fixing bolts are used to fix the ear plate and the second tube body; The accommodating cavity is also filled with sealing material.

2. The protective pipe body for bridge cables according to claim 1, characterized in that: The ear plate, the first tube body and the second tube body are provided with matching bolt holes, and the fixing bolts pass through the bolt holes of the ear plate, the second tube body and the first tube body in sequence.

3. The protective pipe body for bridge cables according to claim 2, characterized in that: The fixing bolt is a hollow structure, the hollow structure at the threaded end is filled with water-immersed color-developing material, and the hollow structure at the nut end is provided with a sealed observation window.

4. The protective pipe body for bridge cables according to claim 1, characterized in that: The ear plate is welded to the outer wall of the first tube body.

5. The protective pipe body for bridge cables according to claim 1, characterized in that: The protective tube body includes more than two sections of a first tube body and a second tube body that match each other. The inner walls of adjacent first tube body ends are respectively provided with matching first semicircular protrusions, and the inner walls of adjacent second tube body ends are respectively provided with matching second semicircular protrusions at the corresponding first semicircular protrusion positions; a waterproof coating is provided between the matching first semicircular protrusions and the matching second semicircular protrusions.

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