Underground optical cable connecting device

Abstract

The utility model relates to the technical field of optical cable connection, in particular to an underground optical cable connecting device. The underground optical cable connecting device comprises a male end connector and a female end connector which are matched with each other, tail shells are fixedly installed on the tail portions of the male end connector and the female end connector, and optical cables are installed on the tail shells. A pull-resisting part is arranged between the tail shell and the optical cable, and the optical cable between the metal sleeve and the tail shell forms a bent reserved line segment part. According to the underground optical cable connecting device provided by the utility model, the stretched optical cable is automatically compensated by arranging the reserved line segment part, so that on one hand, the hidden danger that the joint of the optical cable and the tail shell is damaged due to excessive pulling is further reduced; and on the other hand, the problem of loose connection or connection failure of the male end connector and the female end connector caused by pulling of the optical cable can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of optical cable connection, in particular to an underground optical cable connection device. Background Art

[0002] During mine excavation, optical cables need to be buried inside the mine to meet the subsequent use of the mine. Generally, the length of the mine is long, and two or even more optical cables need to be connected and used. Existing optical cables require special connectors when connecting. The current connectors are connected by male and female connectors, which are simple to operate. However, the optical cable is prone to breakage at the connection between the optical cable and the tail of the connector after being pulled. In addition, when the optical cable is subjected to external pulling force, the pulling force is easily applied directly to the male and female connectors, resulting in the hidden danger of loose connection or connection failure of the male and female connectors.

[0003] Therefore, it is necessary to provide a new downhole optical cable connection device to solve the above technical problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an underground optical cable connecting device.

[0005] The downhole optical cable connection device provided by the utility model comprises a male connector and a female connector that are adapted to each other, and the tails of the male connector and the female connector are fixedly mounted with a tail housing, and the optical cable is mounted on the tail housing;

[0006] A pull-resistance component is provided between the tail housing and the optical cable, and the pull-resistance component includes a metal sleeve, the metal sleeve is fixedly sleeved on the optical cable, and an elastically arranged sliding ring is sleeved on the metal sleeve, a plurality of annularly distributed steel wires are fixedly embedded on the sliding ring, and the other ends of the plurality of steel wires are fixedly mounted with a fixing ring, and the fixing ring is fixedly sleeved on the tail housing;

[0007] The optical cable between the metal sleeve and the tail shell forms a bent reserved line segment.

[0008] Preferably, both side openings of the metal sleeve are provided with raised edges for preventing the sliding ring from slipping off the metal sleeve.

[0009] Preferably, a spring is sleeved on the metal sleeve, one end of the spring is fixedly connected to the annular surface of the sliding ring close to the tail shell, and the other end of the spring is fixedly connected to the raised edge of the metal sleeve close to the tail shell.

[0010] Preferably, the metal sleeve is provided with an elastic telescopic protective sleeve for covering the spring, one end of the elastic telescopic protective sleeve is fixedly embedded in the annular surface of the sliding ring close to the tail shell, and the other end of the elastic telescopic protective sleeve is fixedly connected to the raised edge of the metal sleeve close to the tail shell.

[0011] Preferably, a rubber ring is fixedly mounted on the plug-in end of the male connector, an arc-shaped groove is provided on the plug-in end of the female connector, and the rubber ring is interference-fitted with the arc-shaped groove.

[0012] Preferably, a protective insert ring is fixedly mounted on the plug-in end of the male connector, and a plug-in ring groove that is adapted to fit the protective insert ring is provided on the plug-in end of the female connector.

[0013] Preferably, the protective insert ring is located inside the rubber ring.

[0014] Compared with related technologies, the downhole optical cable connection device provided by the utility model has the following beneficial effects:

[0015] When the optical cable is subjected to instantaneous pulling force, the metal sleeve of the utility model slides outward along the sliding ring and compresses the spring at the same time. The process of the metal sleeve sliding outward and the spring compressing can effectively absorb the pulling kinetic energy of the connection between the optical cable and the tail shell, thereby providing a buffering effect and significantly reducing the possibility of the instantaneous impact force being transmitted to the connection between the tail shell and the optical cable. At the same time, the reserved line segment automatically compensates for the stretched optical cable, which on the one hand further reduces the hidden danger of damage to the connection between the optical cable and the tail shell due to excessive pulling, and on the other hand can reduce the problem of loose connection or connection failure between the male connector and the female connector due to pulling of the optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of a preferred embodiment of the downhole optical cable connection device provided by the utility model;

[0017] Figure 2 for Figure 1 A schematic structural diagram of the male connector and the female connector shown;

[0018] Figure 3 for Figure 1 A schematic structural diagram of the pull-resistance component shown;

[0019] Figure 4 for Figure 1 The schematic diagram of the structure of the elastic telescopic protective cover is shown.

[0020] Numbers in the figure: 1. Male connector; 2. Female connector; 2a. Arc groove; 2b. Insertion ring groove; 3. Tail shell; 4. Optical cable; 41. Reserved line segment; 5. Pull-resistant component; 51. Metal sleeve; 52. Sliding ring; 53. Steel wire; 54. Fixed ring; 55. Spring; 6. Elastic telescopic protective sleeve; 7. Rubber ring; 8. Protective plug ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0022] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0023] See also Figures 1 to 4 An embodiment of the present invention provides a downhole optical cable connection device, which includes a male end connector 1 and a female end connector 2 that are adapted to each other.

[0024] In the embodiments of the present invention, please refer to Figures 1 to 4 The plug-in end of the male connector 1 is fixedly installed with a rubber ring 7, and the plug-in end of the female connector 2 is provided with an arc groove 2a, and the rubber ring 7 is interference fit with the arc groove 2a, and the plug-in end of the male connector 1 is fixedly installed with a protective plug ring 8, and the plug-in end of the female connector 2 is provided with an inserting ring groove 2b that is adapted to the protective plug ring 8, and the protective plug ring 8 is located on the inner side of the rubber ring 7.

[0025] It should be noted that: when the male connector 1 and the female connector 2 are plugged in, the protective plug ring 8 on the male connector 1 is inserted into the plug-in ring groove 2b opened in the female connector 2, thereby realizing protection of the connection between the male connector 1 and the female connector 2. At the same time, the rubber ring 7 on the male connector 1 is snapped into the arc groove 2a opened in the female connector 2. Since the rubber ring 7 and the arc groove 2a have an interference fit, on the one hand, the rubber ring 7 can enhance the stability of the connection between the male connector 1 and the female connector 2. On the other hand, the rubber ring 7 cooperates with the protective plug ring 8 to form two barriers to protect the connection between the male connector 1 and the female connector 2, preventing dust and dirt from penetrating into the component part through the gap between the male connector 1 and the female connector 2.

[0026] In the embodiments of the present invention, please refer to Figures 1 to 4The tails of the male connector 1 and the female connector 2 are both fixedly mounted with a tail shell 3, and an optical cable 4 is mounted on the tail shell 3. A pull-resistance component 5 is provided between the tail shell 3 and the optical cable 4, and the pull-resistance component 5 includes a metal sleeve 51, the metal sleeve 51 is fixedly sleeved on the optical cable 4, and an elastically arranged sliding ring 52 is sleeved on the metal sleeve 51. Specifically, both side openings of the metal sleeve 51 are provided with raised edges for preventing the sliding ring 52 from slipping off the metal sleeve 51, and a spring 55 is sleeved on the metal sleeve 51, one end of the spring 55 is fixedly connected to the annular surface of the sliding ring 52 close to the tail shell 3, and the other end of the spring 55 is fixedly connected to the raised edge of the metal sleeve 51 close to the tail shell 3;

[0027] A plurality of annularly distributed steel wires 53 are fixedly embedded on the sliding ring 52 , and a fixing ring 54 is fixedly mounted on the other end of the plurality of steel wires 53 , and the fixing ring 54 is fixedly sleeved on the tail shell 3 , and the optical cable 4 between the metal sleeve 51 and the tail shell 3 forms a curved reserved line segment 41 .

[0028] It should be noted that when the optical cable 4 is subjected to an instantaneous pulling force, the metal sleeve 51 slides outward along the sliding ring 52 while compressing the spring 55. The process of the metal sleeve 51 sliding outward and the spring 55 compressing can effectively absorb the pulling kinetic energy at the connection between the optical cable 4 and the tail housing 3, thereby providing a buffering effect and significantly reducing the possibility of the instantaneous impact force being transmitted to the connection between the tail housing 3 and the optical cable 4.

[0029] At the same time, the reserved line segment 41 automatically compensates for the stretched optical cable 4. On the one hand, it further reduces the hidden danger of damage to the connection between the optical cable 4 and the tail shell 3 due to excessive pulling. On the other hand, it can reduce the problem of loose connection or connection failure between the male connector 1 and the female connector 2 due to the pulling of the optical cable 4.

[0030] Furthermore, an elastic telescopic protective sleeve 6 for covering the spring 55 is provided on the metal sleeve 51. One end of the elastic telescopic protective sleeve 6 is fixedly embedded in the annular surface of the sliding ring 52 close to the tail shell 3, and the other end of the elastic telescopic protective sleeve 6 is fixedly connected to the raised edge of the metal sleeve 51 close to the tail shell 3. The provided elastic telescopic protective sleeve 6 can effectively protect the spring 55 and improve the service life of the spring 55.

[0031] Among them, the present application selects high-strength alloy steel wire to replace the steel wire 53, and performs galvanizing or carburizing treatment on the surface of the high-strength alloy steel wire to improve its fatigue strength and corrosion resistance; at the same time, the number of high-strength alloy steel wires is increased (for example, from 6 to 8) to disperse the force and reduce the load on the high-strength alloy steel wire;

[0032] In addition, the elastic telescopic protective cover 6 is made of fluororubber or polytetrafluoroethylene materials that are resistant to high and low temperatures and oil and gas corrosion, and a reinforcing fiber layer is added on its inner side to improve its anti-aging and tearing properties and extend its service life. The rubber ring 7 is made of hydrogenated nitrile rubber or silicone rubber to improve its resistance to high and low temperatures and aging.

[0033] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0034] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A downhole optical cable connection device, comprising a male connector (1) and a female connector (2) adapted to each other, wherein the tails of the male connector (1) and the female connector (2) are fixedly mounted with a tail housing (3), and an optical cable (4) is mounted on the tail housing (3), characterized in that: A pull-resistance component (5) is provided between the tail shell (3) and the optical cable (4), and the pull-resistance component (5) includes a metal sleeve (51), the metal sleeve (51) is fixedly sleeved on the optical cable (4), and an elastically arranged sliding ring (52) is sleeved on the metal sleeve (51), a plurality of annularly distributed steel wires (53) are fixedly embedded on the sliding ring (52), and a fixing ring (54) is fixedly mounted on the other end of the plurality of steel wires (53), and the fixing ring (54) is fixedly sleeved on the tail shell (3); The optical cable (4) between the metal sleeve (51) and the tail housing (3) forms a curved reserved line segment portion (41).

2. The downhole optical cable connection device according to claim 1, characterized in that: Both side openings of the metal sleeve (51) are provided with raised edges for preventing the sliding ring (52) from slipping off the metal sleeve (51).

3. The downhole optical cable connection device according to claim 2, characterized in that: A spring (55) is sleeved on the metal sleeve (51), one end of the spring (55) is fixedly connected to the annular surface of the sliding ring (52) close to the tail shell (3), and the other end of the spring (55) is fixedly connected to the raised edge of the metal sleeve (51) close to the tail shell (3).

4. The downhole optical cable connection device according to claim 2, characterized in that: The metal sleeve (51) is provided with an elastic telescopic protective sleeve (6) for covering the spring (55), one end of the elastic telescopic protective sleeve (6) is fixedly engaged with the annular surface of the sliding ring (52) close to the tail shell (3), and the other end of the elastic telescopic protective sleeve (6) is fixedly connected to the raised edge of the metal sleeve (51) close to the tail shell (3).

5. The downhole optical cable connection device according to claim 1, characterized in that: The plug-in end of the male connector (1) is fixedly mounted with a rubber ring (7), and the plug-in end of the female connector (2) is provided with an arc-shaped groove (2a), and the rubber ring (7) is interference-fitted with the arc-shaped groove (2a).

6. The downhole optical cable connection device according to claim 5, characterized in that: The plug-in end of the male connector (1) is fixedly mounted with a protective plug-in ring (8), and the plug-in end of the female connector (2) is provided with a plug-in ring groove (2b) that is adapted to the protective plug-in ring (8).

7. The downhole optical cable connection device according to claim 6, characterized in that: The protective insert ring (8) is located inside the rubber ring (7).

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