Grounding device of optical cable shielding layer

Abstract

The utility model relates to a grounding device of an optical cable shielding layer, and relates to the technical field of optical cable grounding, the grounding device comprises a steel strand used for electrically communicating a metal reinforcing core with a lightning protection ground bar, and a plurality of groups of conductive wires used for electrically communicating the shielding layer with the lightning protection ground bar, and the metal hoop is used for locking the plurality of groups of conductive wires on the shielding layer. The multiple groups of conductive wires are installed on the outer ring of the shielding layer in a circumferential array mode, the metal hoops lock the multiple groups of conductive wires on the shielding layer, the other ends of the multiple groups of conductive wires are fixedly installed on the special ground bar and finally electrically communicated with the lightning protection ground bar, and the grounding effect of the optical cable shielding layer is improved.

Description

Technical Field

[0001] The present application relates to the technical field of optical cable grounding, and in particular to a grounding device for an optical cable shielding layer. Background Art

[0002] The optical cable shield is a structure used to prevent external electromagnetic interference. It is usually wrapped between the fiber core and the insulation layer. The optical cable shield can effectively reduce the impact of electromagnetic interference. Since the metal reinforcement core and the optical cable shield in the optical cable are metal components with conductivity, huge induced current will be generated in thunderstorms, causing high potential, posing a safety threat to the optical cable and equipment in the equipment room.

[0003] At present, in order to improve the safety of the optical cable shielding layer, one end of the optical cable shielding layer is usually grounded to promptly conduct the induced current on the optical cable shielding layer to the ground, so as to avoid personal and equipment damage and ensure the normal operation of the communication system. Most of the commonly used optical cable shielding grounding devices now peel off the outer sheath of the optical cable, then directly tie one end of the grounding wire to the optical cable shielding layer, and fix the other end to the lightning protection ground bar to achieve the grounding of the optical cable.

[0004] However, since the grounding wire is directly tied to the optical cable shielding layer, the exposed part is easily corroded, causing looseness or reduced conductivity, which reduces the grounding effect of the optical cable shielding layer. Utility Model Content

[0005] In order to improve the grounding effect of an optical cable shielding layer, the present application provides a grounding device for an optical cable shielding layer.

[0006] The grounding device for the optical cable shielding layer provided in this application adopts the following technical solution:

[0007] The grounding device of the optical cable shielding layer includes a steel strand for electrically connecting the metal reinforcing core with the lightning protection ground bar, and a conductive wire for electrically connecting the shielding layer with the lightning protection ground bar. The conductive wire array is provided with multiple groups, and the multiple groups of conductive wires are locked to the metal hoops on the shielding layer.

[0008] By adopting the above technical solution, multiple groups of conductive wires are installed in a circular array on the outer ring of the shielding layer, metal hoops lock the multiple groups of conductive wires on the shielding layer, and the other ends of the multiple groups of conductive wires are fixedly installed on a dedicated ground bus and finally electrically connected to the lightning protection ground bus, thereby improving the grounding effect of the optical cable shielding layer.

[0009] Furthermore, the metal hoop is made of a metal material having rust-proof, conductive and corrosion-resistant properties.

[0010] By adopting the above technical solution, the metal ferrule has good electrical conductivity and is not easily corroded, and is not prone to rust during long-term use. The metal ferrule can maintain good electrical conductivity during long-term use, thereby ensuring good grounding performance of the optical cable shielding layer.

[0011] Furthermore, the metal hoop is composed of an upper hoop body, a lower hoop body and a locking piece. The upper hoop body and one end of the lower hoop body are hinged to each other. The locking piece is arranged on the lower hoop body and is used to lock the upper hoop body away from the hinged end on the lower hoop body.

[0012] By adopting the above technical solution, the upper hoop body and one end of the lower hoop body are separated from each other, and then the lower hoop body presses part of the conductive wire against the shielding layer, the upper hoop body is rotated to press the remaining conductive wire against the shielding layer, and the upper hoop body is locked on the lower hoop body through the locking piece, so as to lock the metal hoop on the shielding layer.

[0013] Furthermore, the locking piece consists of a locking bolt and a locking nut, the locking bolt is rotatably arranged on the lower hoop body, the upper hoop body is provided with a U-shaped groove for the locking bolt to rotate into, and the locking nut is threadedly arranged on the locking bolt and pressed against the upper hoop body.

[0014] By adopting the above technical solution, when the upper hoop body is close to the lower hoop body, the locking bolt is rotated into the U-shaped groove, and the locking nut is twisted so that the locking nut thread is pressed against the upper hoop body, thereby locking the upper hoop body on the lower hoop body.

[0015] Furthermore, a plurality of groups of annular bumps are arranged at intervals on the upper hoop body and the lower hoop body. The annular bumps have good conductivity. The annular bumps press the conductive wires against the shielding layer and are used to improve the fixing effect of the conductive wires.

[0016] By adopting the above technical solution, when the upper hoop body is locked on the lower hoop body, the conductive wire is pressed against the shielding layer through multiple groups of annular protrusions, thereby improving the fixing effect of the metal hoop on the conductive wire and preventing the conductive wire from detaching from the shielding layer.

[0017] Furthermore, the lightning protection ground bar is provided with a special ground bar which is convenient for connecting with multiple groups of conductive wires and steel strands, and the special ground bar is electrically connected with the lightning protection ground bar.

[0018] By adopting the above technical solution, the lightning protection ground bus is fixedly installed on the ground and grounded. In order to facilitate the electrical connection between multiple groups of optical cables and the lightning protection ground bus, a special ground bus is fixedly installed on the lightning protection ground bus. The special ground bus is electrically connected to the lightning protection ground bus through a grounding wire with a larger cross-sectional area, thereby facilitating the electrical connection between multiple groups of optical cables.

[0019] Furthermore, a plurality of connection terminals for connecting the conductive wires are arranged at intervals on the upper hoop body and the lower hoop body, and the connection terminals are electrically connected with the upper hoop body and the lower hoop body.

[0020] By adopting the above technical solution, the upper hoop body and the lower hoop body are tightly fitted on the optical cable shielding layer and electrically connected with the shielding layer, and a plurality of wiring terminals for convenient connection of conductive wires are installed at intervals on the outer periphery of the upper hoop body and the lower hoop body, and the wiring terminals are electrically connected with the upper hoop body and the lower hoop body, so as to facilitate the installation of the conductive wire on the metal hoop.

[0021] Furthermore, both ends of the conductive wire are provided with copper noses for electrical connection with the wiring terminals, and the wiring terminals can lock the copper noses.

[0022] By adopting the above technical solution, the copper nose is put on the wiring terminal during use, and the nut is screwed to lock the copper nose on the wiring terminal, so as to achieve electrical connection between the conductive wire and the wiring terminal. The other end of the conductive wire is fixedly installed on a dedicated ground bar through the copper nose, so as to facilitate the installation of the conductive wire.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] By installing multiple groups of conductive wires in a circular array on the outer ring of the shielding layer, the upper hoop body and the lower hoop body cooperate with each other to press the multiple groups of conductive wires against the shielding layer, rotating the locking bolt into the U-shaped groove and locking the upper hoop body on the lower hoop body through the locking nut, the other ends of the multiple groups of conductive wires are fixedly installed on the special ground bar and finally electrically connected to the lightning protection ground bar, thereby improving the grounding effect of the optical cable shielding layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a shielding layer grounding device according to Example 1 of the present application;

[0026] Figure 2 yes Figure 1 The enlarged schematic diagram of the middle A part;

[0027] Figure 3 is a schematic diagram of the metal hoop structure of Example 1 of the present application;

[0028] Figure 4 It is a schematic diagram of the structure of the shielding layer grounding device of Example 2 of the present application;

[0029] Figure 5 It is a schematic diagram of the metal hoop and part of the conductive wire structure of Example 2 of the present application.

[0030] Figure numerals: 1. Lightning protection ground bar; 11. Special ground bar; 12. Grounding wire; 2. Shielding layer; 21. Conductive wire; 22. Copper nose; 3. Metal reinforcement core; 31. Steel strand; 4. Metal hoop; 41. Upper hoop body; 411. U-shaped groove; 42. Lower hoop body; 43. Locking piece; 431. Locking bolt; 432. Locking nut; 44. Annular protrusion; 5. Terminal block. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-5 This application is described in further detail.

[0032] The embodiment of the present application discloses a grounding device for a shielding layer of an optical cable.

[0033] Example 1

[0034] Reference Figure 1 The grounding device of the optical cable shielding layer 2 includes a steel strand 31 for electrically connecting the metal reinforcing core 3 with the lightning protection ground bar 1, and a conductive wire 21 for electrically connecting the shielding layer 2 with the lightning protection ground bar 1. The conductive wire 21 array is provided with multiple groups, and the multiple groups of conductive wires 21 are locked to the metal hoop 4 on the shielding layer 2.

[0035] Reference Figure 1 The lightning protection ground bar 1 is fixedly installed on the ground and grounded. In order to facilitate the electrical connection between the multiple groups of optical cables on the ODF rack and the lightning protection ground bar 1, a special ground bar 11 is fixedly installed on the ODF rack. The special ground bar 11 is electrically connected to the lightning protection ground bar 1 through a grounding wire 12 with a larger cross-sectional area; one end of the steel stranded wire is electrically connected to the metal reinforcement core 3 in the optical cable, and the other end of the steel stranded wire 31 is fixedly installed on the special ground bar 11, so that the metal reinforcement core 3 is grounded.

[0036] Reference Figure 2 and Figure 3 The metal hoop 4 is composed of an upper hoop body 41, a lower hoop body 42 and a locking piece 43. The upper hoop body 41 and the lower hoop body are circular arc structures symmetrically arranged. One end of the upper hoop body 41 and the lower hoop body 42 are hinged to each other. The locking piece 43 is arranged on the lower hoop body 42. The locking piece 43 is used to lock the end of the upper hoop body 41 away from the hinge to the lower hoop body 42; the locking piece 43 is composed of a locking bolt 431 and a locking nut 432. The locking bolt 431 is rotated It is installed on the lower hoop body 42, and a U-shaped groove 411 is opened on the upper hoop body 41 for the locking bolt 431 to rotate into, and the locking nut 432 is threadedly installed on the locking bolt 431; when the upper hoop body 41 is close to the lower hoop body 42, the locking bolt 431 is rotated to enter the U-shaped groove 411, and the locking nut 432 is twisted, so that the locking nut 432 is threadedly pressed against the upper hoop body 41, thereby locking the upper hoop body 41 on the lower hoop body 42.

[0037] Reference Figure 2 and Figure 3A plurality of groups of annular protrusions 44 are installed at intervals on the opposite sides of the upper hoop body 41 and the lower hoop body 42. The annular protrusions 44 have good conductivity. The annular protrusions 44 press the conductive wire 21 against the shielding layer 2, thereby improving the fixing effect of the metal hoop 4 on the conductive wire 21. In order to improve the grounding effect of the shielding layer 2, the metal hoop 4 is made of a metal material with good rust-proof, conductive and corrosion-resistant properties. The metal hoop 4 in this embodiment is made of a copper-nickel alloy.

[0038] Reference Figure 1 , Figure 2 and Figure 3 , the ends of multiple groups of conductive wires 21 away from the metal hoop 4 are fixedly installed at different positions on the dedicated ground row 11, and the multiple copper wires at the end of the conductive wire 21 close to the metal hoop 4 are spread out and pressed against the shielding layer 2. The multiple groups of conductive wires 21 are installed in a circular array on the outer wall of the shielding layer 2. The locking bolt 431 is rotated to separate the upper hoop body 41 and one end of the lower hoop body 42 from each other, and then the lower hoop body 42 presses part of the copper wires against the shielding layer 2, and the upper hoop body 41 is rotated to press the remaining copper wires against the shielding layer 2, the locking bolt 431 is rotated and enters the U-shaped groove 411, and the locking nut 432 is turned and pressed against the upper hoop body 41, so as to lock the upper hoop body 41 on the lower hoop body 42, and the copper wires are pressed against the shielding layer 2 through the multiple groups of annular protrusions 44 installed at intervals, so as to finally realize the grounding of the optical cable shielding layer 2.

[0039] The working principle of Example 1 of the present application is:

[0040] By installing a circular array of multiple groups of conductive wires 21 on the outer ring of the shielding layer 2, the upper hoop body 41 and the lower hoop body 42 cooperate with each other to press the multiple groups of conductive wires 21 against the shielding layer 2, rotating the locking bolt 431 into the U-shaped groove 411 and locking the upper hoop body 41 on the lower hoop body 42 through the locking nut 432, the other end of the multiple groups of conductive wires 21 is fixedly installed on the dedicated ground bar 11 and finally electrically connected to the lightning protection ground bar 1, thereby improving the grounding effect of the optical cable shielding layer 2.

[0041] Example 2

[0042] Reference Figure 4 and Figure 5The difference between this embodiment and embodiment 1 is that the upper hoop body 41 and the lower hoop body 42 are tightly fitted on the optical cable shielding layer 2 and electrically connected to the shielding layer 2, and a plurality of wiring terminals 5 for connecting the conductive wire 21 are installed at intervals on the outer periphery of the upper hoop body 41 and the lower hoop body 42, and the wiring terminals 5 are electrically connected to the upper hoop body 41 and the lower hoop body 42. In order to facilitate the connection of the two ends of the conductive wire 21, copper noses 22 for electrical connection with the wiring terminals 5 are fixedly installed on both ends of the conductive wire 21. When in use, the copper nose 22 is sleeved on the wiring terminal 5, and the nut is screwed to lock the copper nose 22 on the wiring terminal 5, so as to realize the electrical connection between the conductive wire 21 and the wiring terminal 5, and the other end of the conductive wire 21 is fixedly installed on the dedicated ground row 11 through the copper nose 22.

[0043] The working principle of Example 2 of the present application is:

[0044] By fixing the terminal block 5 on the upper hoop body 41 and the lower hoop body 42 and fixing the copper noses 22 on both ends of the conductive wire 21, it is convenient to detachably install multiple groups of conductive wires 21 on the shielding layer 2, thereby improving the convenience of the grounding device of the shielding layer 2.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A grounding device for an optical cable shielding layer, characterized in that: It comprises a steel strand (31) for electrically connecting a metal reinforcement core (3) with a lightning protection ground bar (1), and a conductive wire (21) for electrically connecting a shielding layer (2) with the lightning protection ground bar (1), wherein the conductive wire (21) array is provided with a plurality of groups, and a metal hoop (4) for locking the plurality of groups of conductive wires (21) on the shielding layer (2).

2. The grounding device for the optical cable shielding layer according to claim 1, characterized in that: The metal hoop (4) is made of a rust-proof, conductive and corrosion-resistant metal material.

3. The grounding device for the optical cable shielding layer according to claim 2, characterized in that: The metal hoop (4) is composed of an upper hoop body (41), a lower hoop body (42) and a locking piece (43); one end of the upper hoop body (41) and the lower hoop body (42) are hinged to each other; the locking piece (43) is arranged on the lower hoop body (42) and is used to lock the end of the upper hoop body (41) away from the hinge to the lower hoop body (42).

4. The grounding device for the optical cable shielding layer according to claim 3, characterized in that: The locking member (43) is composed of a locking bolt (431) and a locking nut (432); the locking bolt (431) is rotatably mounted on the lower hoop body (42); a U-shaped groove (411) is provided on the upper hoop body (41) for the locking bolt (431) to rotate into; and the locking nut (432) is threadedly mounted on the locking bolt (431) and is tightly pressed against the upper hoop body (41).

5. The grounding device for the optical cable shielding layer according to claim 3, characterized in that: A plurality of groups of annular protrusions (44) are arranged at intervals on the upper hoop body (41) and the lower hoop body (42); the annular protrusions (44) are conductive, and the annular protrusions (44) press the conductive wire (21) against the shielding layer (2) and are used to improve the fixing effect of the conductive wire (21).

6. The grounding device for the optical cable shielding layer according to claim 1, characterized in that: The lightning protection ground bar (1) is provided with a dedicated ground bar (11) for facilitating connection with a plurality of groups of conductive wires (21) and steel strands (31); the dedicated ground bar (11) is electrically connected to the lightning protection ground bar (1).

7. The grounding device for the optical cable shielding layer according to claim 3, characterized in that: A plurality of connection terminals (5) for facilitating connection of the conductive wire (21) are arranged at intervals on the upper hoop body (41) and the lower hoop body (42); the connection terminals (5) are electrically connected to the upper hoop body (41) and the lower hoop body (42).

8. The grounding device for the optical cable shielding layer according to claim 7, characterized in that: Both ends of the conductive wire (21) are provided with copper noses (22) for convenient electrical connection with the wiring terminal (5), and the wiring terminal (5) can lock the copper noses (22).

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