Sensing optical cable splicing protection box

Abstract

The utility model provides a sensing optical cable splicing protection box, which comprises a bottom box body, a fiber coiling protection box and a lead-in optical fiber extending out of the fiber coiling protection box are arranged in the bottom box body, the side wall of the bottom box body is provided with a bottom box hole for a sensing optical cable to penetrate, and the top of the bottom box body is open; the middle box body is a frame body of which the upper part and the lower part are opened, the side wall of the middle box body is provided with a middle box hole through which a sensing optical cable penetrates, and the middle box body is detachably arranged at the top of the bottom box body; and the cover body is detachably mounted at the top of the middle box body or the bottom box body. Through the combination of the cover body and the bottom box body or the middle box body, the splicing end of the sensing optical cable can be protected on the premise of not influencing concrete sub-bin construction, it is guaranteed that the first-buried sensing optical cable and the second-buried sensing optical cable can be effectively connected before subsequent construction bin pouring, the splicing quality and the survival rate of the optical cables are improved, and the construction period is shortened. And the overall continuity of the optical cable and the consistency of returned signals are ensured.

Description

Technical Field

[0001] This utility model relates to the field of sensor optical cable construction, and in particular to a sensor optical cable splice protection box. Background Technology

[0002] In modern transportation infrastructure construction, intelligent sensing optical cables are increasingly widely used in the transportation sector to achieve intelligent upgrades of transportation structures, airport hubs, bridges, and railway pavement structures, endowing them with precise intelligent sensing capabilities. Whether it's newly constructed transportation projects, airport runways, or highway and railway projects, the laying and installation of intelligent sensing optical cables has become a crucial step.

[0003] During the construction of intelligent airport runways and intelligent highway pavements, intelligent sensing optical cables need to be laid simultaneously with the pouring of the pavement concrete structure. Large-area concrete pouring commonly employs a segmented or skip-segment construction process. In this method, sensing optical cables must be pre-buried before each segment is constructed, with the cable joints located at the end of each segment. Subsequent segments are then laid during the next segment's pouring. This process exposes the pre-buried cable ends to numerous risks. Without effective protection during pouring, the cables are highly susceptible to damage from external impacts. Furthermore, concrete slurry can contaminate the cable ends, severely impacting the overall continuity of the cable and interfering with the stability and accuracy of the transmitted signal. Therefore, a sensing optical cable splice protection box is proposed to address these issues. Utility Model Content

[0004] The main purpose of this utility model is to provide a sensor optical cable splice protection box, which can ensure that the optical cables buried before and after the subsequent construction silo can be effectively connected, preventing damage to the optical cables or serious contamination of the optical cable heads, which would affect the splicing quality of the optical cables and thus affect the overall continuity of the optical cables and the consistency of the backhaul signal.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a sensor optical cable splice protection box, comprising:

[0006] The bottom box contains a fiber optic cable protection box and an optical fiber extending from the fiber optic cable protection box. The side wall of the bottom box has a bottom box hole for the sensor optical cable to pass through, and the top of the bottom box is open.

[0007] The intermediate box is a frame with openings at both the top and bottom, and the side walls are provided with intermediate box holes for the sensing optical cable to pass through. The intermediate box is detachably installed on the top of the bottom box.

[0008] The cover is detachably mounted on top of the middle box or the bottom box.

[0009] In the preferred embodiment, the bottom box, the middle box, and the cover are detachably installed using screws.

[0010] In the preferred embodiment, a set of corresponding connecting thread seats are provided on the inner wall surface at the top opening of the bottom box and on the inner wall surface at the top and bottom openings of the middle box, and the cover is provided with threaded countersunk holes corresponding to the connecting thread seats.

[0011] In the preferred embodiment, the bottom box, the middle box, and the cover are all fitted rectangular bodies. There are six connecting threaded seats in a set, four of which are located at the four corners of the rectangular body, and the other two are symmetrically located on the central axis of the rectangular body.

[0012] In the preferred embodiment, the outer walls of the bottom box and the top of the middle box are provided with mating steps, and the inner walls of the bottom of the cover and the middle box are provided with wrapping steps that match the mating steps.

[0013] In the preferred embodiment, a sealing ring is fitted onto the outside of the mating step.

[0014] In the preferred embodiment, the outside of the mating step is provided with an anti-detachment groove, and the sealing ring is fitted into the anti-detachment groove.

[0015] This utility model provides a sensor optical cable splice protection box. By combining the cover and the bottom box or the middle box, the splice end of the sensor optical cable can be protected without affecting the construction of concrete compartments. This ensures that the sensor optical cables buried before and after the subsequent construction compartments can be effectively connected, improving the quality and survival rate of the optical cable splice and ensuring the overall continuity of the optical cable and the consistency of the transmitted signal. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a structural diagram showing the connection between the bottom box, the middle box, and the cover of this utility model;

[0018] Figure 2 This is a structural diagram of the connection between the bottom box and the cover of this utility model;

[0019] Figure 3 This is a structural diagram of the bottom box of this utility model;

[0020] Figure 4 This is a structural diagram of the intermediate box of this utility model;

[0021] Figure 5 This is a structural diagram of the cover of this utility model;

[0022] Figure 6 This is an exploded structural diagram of the second embodiment of this utility model;

[0023] Figure 7 This is a utility model Figure 6 Another perspective on the structure diagram;

[0024] Figure 8 This is a utility model Figure 6 Enlarged view of the A-structure;

[0025] Figure 9 This is a utility model Figure 7 Enlarged view of the B-structure;

[0026] Figure 10 This is a flowchart illustrating the usage process of this utility model;

[0027] In the figure: bottom box 1; middle box 2; connecting threaded seats 101, 201; cover 3; threaded countersunk hole 301; fiber optic protection box 4; fiber optic cable 5; sensing optical cable 6; bottom box hole 7; middle box hole 8; mating step 9; sealing ring 10; anti-detachment groove 11; wrapping step 12. Detailed Implementation

[0028] Example 1

[0029] like Figure 1-5 As shown in Figure 10, a sensor optical cable splice protection box includes a bottom box 1, an intermediate box 2, and a cover 3. The bottom box 1 houses a fiber optic cable protection box 4 and an optical fiber 5 extending from the fiber optic cable protection box 4, thus forming an optical cable connection structure inside the bottom box 1. The side wall of the bottom box 1 is provided with a bottom box hole 7 for the sensor optical cable 6 to pass through. After the sensor optical cable 6 passes through the bottom box 1, it is connected to the optical fiber 5. Thus, the bottom box 1 can be used to protect the internal structure during casting. The top of the bottom box 1 is open.

[0030] The intermediate box 2 is a frame with openings at both the top and bottom, and the side wall is provided with intermediate box holes 8 for the sensing optical cable 6 to pass through. The intermediate box holes 8 are used to connect the sensing optical cable 6, so that the sensing optical cable 6 can be connected to the fiber optic cable 5 introduced by the fiber optic cable protection box 4, thereby achieving the effect of connection. The intermediate box 2 can be detachably installed on the top of the bottom box 1 for easy disassembly and assembly during use.

[0031] The cover 3 can be detachably installed on the top of the intermediate box 2 or the bottom box 1, so as to close the opening on the top of the bottom box 1 or the intermediate box 2 according to different construction arrangements, forming a closed protective space for its internal structure.

[0032] Such a design, as Figure 10As shown, before the first section of the compartment is poured, the sensor optical cable 6 laid in this section passes through the bottom box hole 7 on the side of the bottom box 1 and is connected to the fiber optic cable 5 introduced by the fiber protection box 4. Then the bottom box 1 and the cover 3 are assembled and installed in the mold at the end of the compartment construction, keeping it flush with the inside of the mold. This protects the internal structure of the bottom box 1 while facilitating the pouring of the first section of the compartment.

[0033] After the first section of the sub-compartment is poured and before the second section of the sub-compartment is poured, the cover 3 is exposed on the concrete surface. After it is removed, it is assembled onto the intermediate box 2 to provide space for the continuation. Finally, the cover 3 is installed on the intermediate box 2, thus achieving protection of the continuation part without affecting the normal pouring construction.

[0034] It should be noted that the number of fiber optic cables 5, bottom box holes 7, and intermediate box holes 8 can be adjusted as needed. After the sensing optical cable 6 is inserted, a sealing treatment should be performed at the bottom box hole 7 or the intermediate box hole 8.

[0035] In the preferred embodiment, the bottom box 1, the middle box 2, and the cover 3 are detachably installed using screws.

[0036] In the preferred embodiment, to facilitate screw installation, a set of corresponding threaded seats 101 and 201 are provided on the inner wall surface of the top opening of the bottom box 1 and the inner wall surface of the top and bottom openings of the middle box 2. The threaded seats 101 and 201 are integrally formed with the bottom box 1 or the middle box 2. The threaded seats 101 and 201 specifically include an extension seat and a threaded hole provided on the extension seat. The cover 3 is provided with a threaded countersunk hole 301 corresponding to the threaded seats 101 and 201, thereby facilitating screw connection between the bottom box 1, the middle box 2 and the cover 3.

[0037] In this embodiment, the bottom box 1, the middle box 2, and the cover 3 are all fitted rectangular bodies. There are six connecting threaded seats 101 and 201, four of which are located at the four corners of the rectangular body, and the other two are symmetrically located on the central axis of the rectangular body, thereby effectively ensuring the stability of the connection.

[0038] Example 2

[0039] Further explanation in conjunction with Example 1, such as Figure 6-9 As shown in the structure, in order to facilitate the positioning of the bottom box 1, the middle box 2 and the cover 3 when screwed together, the outer wall surface of the top of the bottom box 1 and the middle box 2 are provided with mating steps 9, and the inner wall surface of the bottom of the cover 3 and the middle box 2 are provided with wrapping steps 12 that fit with the mating steps 9.

[0040] When the bottom box 1 is connected to the cover 3 and the middle box 2 is connected to the cover 3, the positioning before screw installation is achieved by the fit between the wrapping step 12 and the mating step 9, which effectively improves the screw installation efficiency.

[0041] In the preferred embodiment, a sealing ring 10 is fitted on the outside of the mating step 9. By wrapping the step 12 and mating step 9 in a stepped fit, and by setting the sealing ring 10 between the two after they are installed and mated, the sealing efficiency can be effectively improved.

[0042] In the preferred embodiment, the outer side of the mating step 9 is provided with an anti-detachment groove 11, and the sealing ring 10 is fitted in the anti-detachment groove 11. By placing the sealing ring 10 in the anti-detachment groove 11, the sealing ring 10 can be prevented from falling off during repeated disassembly and assembly, thus avoiding great inconvenience to the installation.

[0043] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A sensing optical cable splice closure, characterized by, The utility model relates to a kind of optical cable protection box, including: Bottom box (1) is installed with disc fiber protection box (4) inside, and lead-in optical fiber (5) extends from disc fiber protection box (4), bottom box hole (7) for sensing optical cable (6) to enter is provided on the side wall of bottom box (1), and the top of bottom box (1) is open; Middle box (2) is the frame body that top and bottom are open, and middle box hole (8) for sensing optical cable (6) to enter is provided on the side wall, and middle box (2) is detachably installed in the top of bottom box (1); Cover (3) is detachably installed in the top of middle box (2) or bottom box (1).

2. The sensing cable extension closure of claim 1, wherein: Bottom box (1), middle box (2) and cover (3) are detachably installed by screw.

3. The sensing cable extension closure of claim 2, wherein: The inner wall surface of the top opening of bottom box (1), the inner wall surface of the top and bottom opening of middle box (2) are all provided with corresponding one group of connecting screw seat (101,201), and cover (3) is provided with threaded hole (301) corresponding with connecting screw seat (101,201).

4. The sensing cable extension closure of claim 3, wherein: Bottom box (1), middle box (2) and cover (3) are all rectangular body, and the number of one group of connecting screw seat (101,201) is six, four of which are arranged at the four corners of rectangular body, and the other two are symmetrically arranged on the central axis of rectangular body.

5. The sensing cable extension closure of any one of claims 2-4, wherein: The outer wall surface of the top of bottom box (1) and middle box (2) is provided with butt joint step (9), and the inner wall surface of the bottom of cover (3) and middle box (2) is provided with wrapping step (12) matched with butt joint step (9).

6. The sensing cable extension closure of claim 4, wherein: Sealing ring (10) is sleeved on the outside of butt joint step (9).

7. The sensing cable extension closure of claim 5, wherein: Butt joint step (9) is provided with anti-drop groove (11) outside, and sealing ring (10) is sleeved in anti-drop groove (11). ​

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