Optical cable protection device and buried optical cable

Abstract

The present application provides an optical cable protection device and an underground optical cable, wherein the optical cable protection device includes an outer shell, a diverter device, a plurality of electrostatic absorption devices, and a plurality of shaping devices; a plurality of optical cables can be passed through the outer shell, each optical cable extending along a first direction within the outer shell and arranged in sequence along a second direction; the diverter device is arranged at one end of the outer shell along the first direction to separate the plurality of optical cables from each other; a plurality of electrostatic absorption devices are arranged at the other end of the outer shell along the first direction to eliminate static electricity on the surface of the optical cable; a plurality of shaping devices are arranged in the outer shell to eliminate bending on the surface of the optical cable; the shaping device is arranged in a tubular shape, the shaping device extends along the first direction, and each shaping device is spaced apart along the second direction. The present application can form permanent protection for the optical cable, facilitate the laying and connection of the optical cable, and thus improve the efficiency of network construction.

Description

Technical Field

[0001] The present application relates to the field of optical cable technology, and in particular to an optical cable protection device and an underground optical cable. Background Art

[0002] The explosive growth of wireless communication traffic and the rapid development of industries such as cloud computing, big data, and the Internet of Things have placed higher demands on network speeds, becoming a key driver of network development. Globally, governments are vigorously promoting wireless network construction. The installation of mobile network base stations has become a rigid requirement, and fiber optic cables must be laid between base stations. These cables are typically laid underground, making them less susceptible to damage from surface construction.

[0003] The traditional method of laying optical cables underground is affected by the length of the optical cable wiring in each part and the surface environment. The communication optical cables need to be bent and stretched multiple times to complete the layout, which causes trouble for laying and connecting the optical cables and affects the efficiency of network construction. Summary of the Invention

[0004] The present application provides an optical cable protection device and an underground optical cable to form permanent protection for the optical cable, facilitate the laying and connection of the optical cable, and thus improve the efficiency of network construction.

[0005] A first aspect of the present application provides an optical cable protection device, comprising:

[0006] a housing, wherein a plurality of optical cables can be passed through the housing, wherein the optical cables extend along a first direction within the housing and are sequentially arranged along a second direction;

[0007] A diversion device is provided at one end of the housing along the first direction to separate the plurality of optical cables from each other;

[0008] A plurality of static electricity absorbing devices are provided at the other end of the housing along the first direction to eliminate static electricity on the surface of the optical cable;

[0009] A plurality of shaping devices are disposed in the housing to eliminate bending on the surface of the optical cable;

[0010] The shaping device is configured to be tubular, extends along a first direction, and each shaping device is spaced apart and distributed along a second direction.

[0011] Optionally, the shaping device comprises:

[0012] A guide cylinder seat is configured in a tubular shape and is connected to the housing;

[0013] An internal fixing seat connected to the guide cylinder seat;

[0014] A fitting pipe is sleeved in the inner fixing seat;

[0015] The first elastic member is arranged between the inner fixing seat and the fitting tube, and two ends of the first elastic member elastically press against the inner fixing seat and the fitting tube respectively.

[0016] Optionally, the shaping device further includes a supporting sphere, and the supporting sphere is arranged between the first elastic member and the fitting tube.

[0017] Optionally, the optical cable protection device further comprises a line control component to limit the pulling force on the optical cable;

[0018] The line control assembly is arranged in the guide cylinder seat, and the line control assembly is symmetrically distributed along the length direction of the inner fixing seat.

[0019] Optionally, the line control assembly includes an external fixing member and an internal fixing member, the external fixing member is connected to the guide cylinder seat, and the internal fixing member is sleeved inside the external fixing member;

[0020] Furthermore, at least one of the inner side wall of the outer fixing member and the outer side wall of the inner fixing member is provided with a wedge-shaped surface, so that the outer fixing member and the inner fixing member can slide relative to each other and be locked.

[0021] Optionally, the line control assembly also includes a second elastic member, which is arranged between the external fixing member and the internal fixing member, the extension and contraction direction of the second elastic member is consistent with the movement direction of the internal fixing member, and the two ends of the second elastic member elastically press against the external fixing member and the internal fixing member respectively.

[0022] Optionally, the external fixing member is connected to the guide cylinder seat via a support member, and the support member includes:

[0023] a support rod, one end of which is fixedly connected to the guide cylinder seat and the other end of which is rotatably connected to the external fixing member;

[0024] Auxiliary connecting rods are symmetrically distributed on both sides of the support rod, one end of the auxiliary connecting rod is rotatably connected to the support rod, and the other end is rotatably connected to the external fixing member.

[0025] Optionally, the optical cable protection device further includes a winding device, which is disposed in the housing and rotatably connected to the housing to prevent the optical cable from loosening.

[0026] Optionally, the optical cable protection device further includes a plurality of partitions, which are spaced apart and distributed along the second direction, with wire gaps formed between adjacent partitions.

[0027] A second aspect of the present application provides an underground optical cable, which includes any one of the optical cable protection devices provided in the present application.

[0028] The technical solution provided by this application can achieve the following beneficial effects:

[0029] The optical cable protection device provided by the present application includes an outer shell, a diverter device, multiple electrostatic absorption devices and multiple shaping devices; multiple optical cables can be passed through the outer shell to combine and arrange the multiple optical cables for bundling, which facilitates the laying of the optical cables and improves the laying efficiency of the optical cables. Each optical cable extends along a first direction in the outer shell and is arranged in sequence along a second direction; the diverter device is arranged at one end of the outer shell along the first direction to separate the multiple optical cables from each other and avoid entanglement between adjacent optical cables; multiple electrostatic absorption devices are arranged at the other end of the outer shell along the first direction to eliminate static electricity on the surface of the optical cable and reduce the impact of static electricity on communication transmission; multiple shaping devices are arranged in the outer shell to eliminate bending on the surface of the optical cable and prevent deformation or damage of the optical cable due to bending; the shaping device is arranged in a tubular shape, the shaping device extends along the first direction, and the shaping devices are spaced apart along the second direction, and a long straight shaping and guiding structure is formed by a longer tubular structure, so that the bending of each optical cable can be corrected in the shaping device.

[0030] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic structural diagram of an optical cable protection device provided in an embodiment of the present application;

[0032] Figure 2 A schematic structural diagram of a shaping device provided in an embodiment of the present application;

[0033] Figure 3 A schematic diagram of the structure of the line control assembly provided in an embodiment of the present application;

[0034] Figure 4 A schematic structural diagram of the electrostatic absorption device provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 1-housing;

[0037] 101-support cylinder seat;

[0038] 2- diversion device;

[0039] 3-Plastic sleeve;

[0040] 4-Rewinding device;

[0041] 401- rotating cross-legged sitting;

[0042] 402-fixed bracket;

[0043] 5-Separator;

[0044] 6-Shaping device;

[0045] 601-guide cylinder seat;

[0046] 602-Internal fixation seat;

[0047] 603-connecting support;

[0048] 604-first elastic member;

[0049] 605-insertion tube;

[0050] 606-fitting pipe fittings;

[0051] 607-support sphere;

[0052] 7- Electrostatic absorption device;

[0053] 701-fixed sleeve;

[0054] 702-Liquid storage tube;

[0055] 703-Guide;

[0056] 704-end cover;

[0057] 705-seal seat;

[0058] 8-control line assembly;

[0059] 801-support rod;

[0060] 802-Auxiliary connecting rod;

[0061] 803-External fixation;

[0062] 804-locking sleeve;

[0063] 805-Internal fixation parts;

[0064] 806- second elastic member;

[0065] 9-Optical cable.

[0066] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application 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 this application and are not intended to limit this application.

[0068] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0069] In the description of this specification, it should be understood that the directional words such as "upper" and "lower" described in the embodiments of the present application are described from the perspectives shown in the accompanying drawings and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should be understood that when it is mentioned that an element is connected to another element "on" or "under", it can not only be directly connected to the other element "on" or "under", but also indirectly connected to the other element "on" or "under" through an intermediate element.

[0070] like Figures 1-4 As shown, an embodiment of the present application provides an optical cable protection device, which includes a shell 1, a diversion device 2, multiple electrostatic absorption devices 7 and multiple shaping devices 6. Multiple optical cables 9 can be passed through the outer shell 1, so that the multiple optical cables 9 can be combined and arranged to form a group of optical cables, which facilitates the laying of optical cables and improves the laying efficiency of optical cables. Each optical cable extends in the outer shell 1 along a first direction (the length direction of the outer shell 1) and is arranged in sequence along a second direction, and the first direction is perpendicular to the second direction; the diversion device 2 is arranged at one end of the outer shell 1 along the first direction to separate the multiple optical cables 9 from each other and avoid entanglement between adjacent optical cables 9; multiple electrostatic absorption devices 7 are arranged at the other end of the outer shell 1 along the first direction to eliminate static electricity on the surface of the optical cable 9 and reduce the impact of static electricity on communication transmission; multiple shaping devices 6 are arranged in the outer shell 1 to eliminate bending on the surface of the optical cable 9 and prevent deformation or damage of the optical cable 9 due to bending; the shaping device 6 is arranged in a tubular shape, the shaping device 6 extends along the first direction, and each shaping device 6 is spaced apart along the second direction, and a long straight shaping and guiding structure is formed by a longer tubular structure, so that the bending of each optical cable 9 is corrected in the shaping device 6.

[0071] Specifically, the shell 1 includes a first shell and a second shell that are connected to each other. The first shell and the second shell are buckled together to form a closed annular columnar structure, so that the installation and use of the optical cable protection device are more flexible and convenient. Specifically, the optical cable protection device is installed at a position on the optical cable that is prone to damage. During installation, the shell 1 is first opened to separate the first shell and the second shell from each other, and each optical cable is fixed in the shell 1 respectively, and then the first shell and the second shell are buckled together to form a closed shell 1; the outer surfaces of the first shell and the second shell can be set to an arc structure, that is, the cross-section of the shell 1 is set to a circular or elliptical shape to reduce the contact area between the shell 1 and the buried position of the optical cable, reduce the impact of uneven terrain on the shell 1, and facilitate the fixation of the shell 1; the first shell and the second shell can be fixed to each other by any appropriate means such as snap connection or screw connection.

[0072] The outer end of the housing 1 may be connected to a plastic sleeve 3 , and multiple optical cables 9 are bundled into a bundle through the plastic sleeve 3 . The plastic sleeve 3 forms a sleeve protection for the optical cables 9 , and the optical cables 9 pass through the plastic sleeve 3 and extend into the housing 1 .

[0073] Furthermore, the diverter device 2 is connected to the plastic sleeve 3, and the end of the diverter device 2 facing the plastic sleeve 3 is communicated with the plastic sleeve 3. The end of the diverter device 2 away from the plastic sleeve 3 is distributed with multiple small holes, and each optical cable 9 passes through one of the small holes and extends into the interior of the outer shell 1, so that the optical cables 9 are separated from each other, avoiding entanglement and the like between the optical cables 9.

[0074] Furthermore, the optical cable protection device also includes a plurality of partitions 5, which are arranged on the inner side of the diversion device 2. The partitions 5 are spaced apart along the second direction, and a wire gap is formed between adjacent partitions 5. The partitions 5 make the optical cables 9 evenly distributed in the housing 1, thereby reducing the contact friction of the optical cables in the housing 1 and preventing the occurrence of breakage in the middle of the optical cables. Specifically, a plurality of shafts can be provided in the housing 1, each shaft being spaced apart along the second direction. The partitions 5 are sleeved on the shafts and can rotate on the shafts. When the optical cable 9 passes through the wire gaps between the partitions 5, the partitions 5 rotate with the movement of the optical cable 9, thereby rolling and squeezing the surface of the optical cable 9 through the partitions 5 to reduce creases on the surface of the optical cable 9. The partitions 5 can be made of a flexible material, or the surface of the partitions 5 can be coated with a layer of soft material to prevent the partitions 5 from damaging the surface of the optical cable 9.

[0075] Furthermore, the optical cable protection device also includes a winding device 4, which is arranged in the outer shell 1 and is rotatably connected to the outer shell 1 to prevent the optical cable from loosening. That is, the excess cables of each optical cable 9 are wound up by the winding device 4, so that each optical cable 9 in the same group of optical cables can be kept in a tensioned state.

[0076] Specifically, the winding device 4 includes a fixed bracket 402 and a rotating disc 401. The fixed bracket 402 can be configured as a polygonal structure and fixedly connected to the housing 1. The rotating discs 401 are spaced apart along the fixed bracket 402. For example, each rotating disc 401 is disposed on each edge or vertex of the polygonal structure, and each rotating disc 401 can rotate independently on the fixed bracket 402. The optical cable 9 passes through the rotating disc 401 along the radial direction of the rotating disc 401. When the rotating disc 401 rotates, the optical cable 9 is wound around the rotating disc 401 as the rotating disc 401 rotates. A torsion spring or other torque-generating component can be provided between the rotating disc 401 and the fixed bracket 402 to enable the rotating disc 401 to automatically rotate and tighten the optical cable 9. The rotating disc 401 can also be provided with a manual rocker to manually drive the rotating disc 401 to rotate, thereby facilitating the winding and release of the optical cable 9 wound on the rotating disc 401.

[0077] Furthermore, the winding device 4 is arranged at one end of the shaping device 6 and is separated from the shaping device 6 along the first direction. The outer plastic parts of the optical cable 9 exposed on the outer layer or wound inside are effectively assisted in shaping by the shaping device 6. That is to say, during the burial process of the optical cable 9, the communication optical cable is in a taut state after being subjected to tensile stress, and the bending part of the optical cable 9 is very easy to deform. The deformation is assisted by the shaping device 6 before winding and then entering the winding, which can improve the protection of the communication cable.

[0078] like Figure 2 As shown, the shaping device 6 includes a guide cylinder seat 601, an internal fixing seat 602, a fitting tube 606 and a first elastic member 604. The guide tube seat 601 is set to be tubular, and the guide tube seat 601 is connected to the outer shell 1, and the guide tube seat 601 forms a guiding effect on the optical cable 9; the internal fixing seat 602 is connected to the guide tube seat 601, the internal fixing seat 602 is coaxial with the guide tube seat 601, and the internal fixing seat 602 is fixedly set in the guide tube seat 601 through the connecting support 603, and the internal fixing seat 602 forms an external reference for shaping; the fitting tube 606 is sleeved in the internal fixing seat 602, and the internal fixing seat 602 fits with the outer surface of the optical cable 9, thereby correcting the outer plastic part of the optical cable 9; the first elastic member 604 is set between the internal fixing seat 602 and the fitting tube 606, and the two ends of the first elastic member 604 elastically press against the internal fixing seat 602 and the fitting tube 606 respectively, and the optical cable 9 is pressed and shaped by the first elastic member 604, thereby correcting the deformation on the surface of the optical cable 9.

[0079] Specifically, a plurality of guide cylinder seats 601 are arranged in parallel in the outer shell 1, and each communication optical cable passes through the guide cylinder seat 601 along the axial direction of the guide cylinder seat 601; the guide cylinder seat 601 can be set as two parts that can be spliced ​​together to facilitate the installation of the optical cable; insertion tubes 605 are symmetrically fixed at both ends of the guide cylinder seat 601, and the communication optical cable is introduced or exported through the insertion tubes 605.

[0080] Among them, the fitting tube 606 can be configured to be divided into two parts that are assembled with each other. A first elastic member 604 is respectively arranged on both sides of the fitting tube 606 to form a group of first elastic members 604. A group of first elastic members 604 is used to press on both sides of the optical cable 9, thereby effectively correcting the deformation of the surface of the optical cable 9; multiple groups of first elastic members 604 are provided between the internal fixing seat 602 and the fitting tube 606, and the multiple groups of first elastic members 604 are arranged at intervals along the length direction of the internal fixing seat 602. The multiple groups of first elastic members 604 are symmetrically distributed along the length direction of the internal fixing seat 602, and multiple points of pressure spaced apart from each other are formed on the optical cable 9 by the multiple groups of first elastic members 604, thereby eliminating the bending of the surface of the optical cable 9.

[0081] Furthermore, the shaping device 6 also includes support balls 607, which are disposed between the first elastic member 604 and the conforming tube 606. That is, the first elastic member 604 is pressed against the conforming tube 606 via the support balls 607. The support balls 607 reduce the contact area between the first elastic member 604 and the conforming tube 606, thereby improving the accuracy of shaping. Each support ball 607 is relatively rotatably fixed to the inner fixing seat 602. The first elastic member 604 applies a compressive force to the support ball 607, allowing the support ball 607 to adjust the position of the communication optical cable through its rotation and pressure.

[0082] Specifically, the shaping device 6 corrects the deformation of the optical cable 9 during the cable retraction and extension process, including using the auxiliary pressing of multiple supporting balls 607 to effectively shape and adjust its bending parts, and then guiding through the fitting tube 606 to improve the correction effect.

[0083] Furthermore, during wiring construction, the optical cable is subjected to high-intensity pulling and is prone to breakage at bends and ports. Therefore, the optical cable protection device provided in the embodiment of the present application also includes a line control component 8 to limit the traction force on the optical cable and prevent the optical cable from being broken by high-intensity pulling. The line control component 8 is arranged in the guide cylinder seat 601, and the line control components 8 are symmetrically distributed along the length direction of the internal fixed seat 602. The optical cable is clamped by the line control component 8, thereby preventing the optical cable 9 from being damaged by excessive traction. Specifically, two line control components 8 are arranged in the guide cylinder seat 601. The line control components 8 are arranged in the guide cylinder seat 601 near the port, and the two line control components 8 are symmetrically distributed at both ends of the internal fixed seat 602. The line control components 8 effectively limit the traction force on the communication optical cable during its construction and layout.

[0084] like Figure 3 As shown, the line control assembly 8 includes an external fixing member 803 and an internal fixing member 805. The external fixing member 803 and the internal fixing member 805 are both arranged in a two-half structure. The external fixing member 803 is connected to the guide tube seat 601, and the internal fixing member 805 is sleeved inside the external fixing member 803. The internal fixing member 805 is used to pass the optical cable; and at least one of the inner side wall of the external fixing member 803 and the outer side wall of the internal fixing member 805 is provided with a wedge surface so that the external fixing member 803 and the internal fixing member 805 can slide relative to each other and be locked.

[0085] In one embodiment, a locking sleeve 804 is fixedly fitted inside the external fixing member 803. The locking sleeve 804 can be integrally formed with the external fixing member 803, or the locking sleeve 804 and the external fixing member 803 can also be fixed by fasteners or the like; the inner side wall of the locking sleeve 804 is provided with a wedge-shaped surface, and the internal fixing member 805 is sleeved on the locking sleeve 804 and can slide along the axial direction of the locking sleeve 804, that is, along the position where the end of the guide tube seat 601 points to the center, the locking sleeve 804 has at least one section arranged as a closing structure with a gradually decreasing aperture.

[0086] When the optical cable 9 moves in a direction directed toward the center of the guide tube seat 601, pulled by a high-intensity traction force, the internal fixing member 805 slides along the locking sleeve 804 along with the optical cable 9 for a certain offset. Then, under the action of the wedge surface, the aperture of the internal fixing member 805 gradually decreases, clamping the optical cable 9. Furthermore, under the action of the wedging force at the wedge surface, the internal fixing member 805 is fixed within the locking sleeve 804 and cannot continue to slide, thereby preventing the optical cable 9 from being excessively stretched and broken. Specifically, when the optical cable 9 slides from the left to the right, the left-side control assembly 8 clamps the optical cable 9; when the optical cable 9 slides from the right to the left, the right-side control assembly 8 clamps the optical cable 9.

[0087] It should be noted that during the wiring construction of the communication optical cable, a certain gap should be left between the outer surface of the optical cable 9 and the internal fixing part 805. The width of the gap is between 3mm and 6mm. The inner diameter of the internal fixing part 805 can be adjusted according to the model of the communication optical cable to ensure that it can be laterally retracted and extended under normal tensile stress. That is to say, under normal traction, the optical cable 9 can slide freely in the internal fixing part 805.

[0088] Furthermore, the line control assembly 8 also includes a second elastic member 806, which is arranged between the external fixing member 803 and the internal fixing member 805. The extension and contraction direction of the second elastic member 806 is consistent with the movement direction of the internal fixing member 805. The two ends of the second elastic member 806 elastically press against the external fixing member 803 (or the locking sleeve 804) and the internal fixing member 805 respectively. The internal fixing member 805 is automatically reset by the second elastic member 806, so that the internal fixing member 805 loosens the optical cable 9, thereby increasing the upper limit threshold of the traction force that the optical cable 9 can withstand.

[0089] Furthermore, the external fixing member 803 is connected to the guide cylinder seat 601 through a supporting member, and the supporting member includes a supporting rod 801 and an auxiliary connecting rod 802. Multiple support rods 801 are distributed in a circumferential array around the guide tube seat 601, one end of the support rod 801 is fixedly connected to the guide tube seat 601, and the other end is rotatably connected to the external fixing piece 803, and the control line assembly 8 is fixed in the guide tube seat 601 through the support rod 801; the auxiliary connecting rods 802 are symmetrically distributed on both sides of the support rod 801, that is, each support rod 801 is provided with an auxiliary connecting rod 802 on both sides, one end of the auxiliary connecting rod 802 is rotatably connected to the support rod 801, and the other end is rotatably connected to the external fixing piece 803. When the support rod 801 is offset and rotated relative to the external fixing piece 803, the auxiliary connecting rod 802 provides auxiliary support to its left and right ends; wherein, the auxiliary connecting rod 802 is a two-section retractable structure, so that the auxiliary connecting rod 802 has a certain elasticity, so that the control line assembly 8 can press and correct the optical cable.

[0090] Furthermore, a support tube seat 101 is provided on the end of the outer shell 1 opposite to the diversion device 2. The support tube seat 101 can be embedded in the interior of the outer shell 1, and each electrostatic absorption device 7 is arranged side by side in the support tube seat 101. When the communication optical cable is being laid, the electrostatic absorption device 7 effectively absorbs the electrostatic friction generated by the plastic parts on the outer surface of the optical cable, thereby reducing its impact on communication transmission.

[0091] like Figure 4As shown, the static absorption device 7 includes a fixed sleeve 701 and a liquid storage tube 702. The fixed sleeve 701 is fixedly connected to the support cylinder base 101. The liquid storage tube 702 is mounted within the support cylinder base 101. The liquid storage tube 702 is configured as an annular cavity structure and stores insulating liquid. A guide 703 is distributed on the liquid storage tube 702. When the optical cable passes through the inner hole of the liquid storage tube 702, the guide 703 guides the friction static electricity on the communication optical cable into the insulating liquid. The insulating liquid in the liquid storage tube 702 absorbs the static electricity on the surface of the optical cable, ensuring that the cable is not affected by electromagnetic interference during communication. The two ends of the annular liquid storage tube 702 are sealed by a sealing seat 705. The sealing seat 705 is equipped with an end cap 704. The end cap 704 fixes the sealing seat 705 to prevent the insulating liquid in the liquid storage tube 702 from leaking.

[0092] In addition, an embodiment of the present application further provides an underground optical cable, which includes any optical cable protection device provided in the embodiment of the present application.

[0093] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An optical cable protection device, characterized in that: include: a housing, wherein a plurality of optical cables can be passed through the housing, wherein the optical cables extend along a first direction within the housing and are sequentially arranged along a second direction; A diversion device is provided at one end of the housing along the first direction to separate the plurality of optical cables from each other; A plurality of static electricity absorbing devices are provided at the other end of the housing along the first direction to eliminate static electricity on the surface of the optical cable; A plurality of shaping devices are disposed in the housing to eliminate bending on the surface of the optical cable; The shaping device is configured to be tubular, the shaping device extends along a first direction, and the shaping devices are spaced apart and distributed along a second direction; The shaping device includes a guide cylinder seat, in which an internal fixing seat, a fitting tube, a first elastic member and a line control assembly are arranged; The guide cylinder seat is configured to be tubular, and the guide cylinder seat is connected to the housing; The inner fixing seat is connected to the guide cylinder seat; The fitting tube is sleeved in the inner fixing seat; The first elastic member is disposed between the inner fixing seat and the fitting tube, and two ends of the first elastic member elastically press against the inner fixing seat and the fitting tube respectively; The control line components are symmetrically distributed along the length direction of the inner fixing seat.

2. The optical cable protection device according to claim 1, characterized in that: The shaping device further includes a supporting sphere, which is arranged between the first elastic member and the fitting tube.

3. The optical cable protection device according to claim 1, characterized in that: The line control assembly includes an external fixing member and an internal fixing member, wherein the external fixing member is connected to the guide cylinder seat, and the internal fixing member is sleeved inside the external fixing member; Furthermore, at least one of the inner side wall of the outer fixing member and the outer side wall of the inner fixing member is provided with a wedge-shaped surface, so that the outer fixing member and the inner fixing member can slide relative to each other and be locked.

4. The optical cable protection device according to claim 3, characterized in that: The line control assembly also includes a second elastic member, which is arranged between the external fixing member and the internal fixing member. The extension and contraction direction of the second elastic member is consistent with the movement direction of the internal fixing member, and the two ends of the second elastic member elastically press against the external fixing member and the internal fixing member respectively.

5. The optical cable protection device according to claim 3, characterized in that: The external fixing member is connected to the guide cylinder seat through a support member, and the support member includes: a support rod, one end of which is fixedly connected to the guide cylinder seat and the other end of which is rotatably connected to the external fixing member; Auxiliary connecting rods are symmetrically distributed on both sides of the support rod, one end of the auxiliary connecting rod is rotatably connected to the support rod, and the other end is rotatably connected to the external fixing member.

6. The optical cable protection device according to any one of claims 1 to 5, characterized in that: The optical cable protection device further comprises a winding device, which is arranged in the shell and is rotatably connected to the shell to prevent the optical cable from loosening.

7. The optical cable protection device according to any one of claims 1 to 5, characterized in that: The optical cable protection device further comprises a plurality of partitions, which are spaced apart and distributed along the second direction, with wire gaps formed between adjacent partitions.

8. An underground optical cable, characterized in that: The optical cable protection device comprises the optical cable protection device according to any one of claims 1 to 7.

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