Optical cable leading-down plugging device

Abstract

The invention discloses an optical cable leading-down plugging device, and belongs to the technical field of optical cables, the optical cable leading-down plugging device comprises a shell and a first sealing assembly, the shell comprises a left half shell and a right half shell which are mutually butted and combined, and the same ends of the left half shell and the right half shell are provided with first semicircular grooves used for being tightly matched with an optical cable; the two first semicircular grooves are combined to form a first circular hole suitable for the optical cable to pass through, and the two second semicircular grooves are combined to form a second circular hole suitable for the steel pipe to pass through; the multiple first sealing assemblies are connected to the ends, close to the first semicircular groove, of the left half shell and the right half shell, the multiple first sealing assemblies are combined to form a circle and are arranged around the optical cable, and the first sealing assemblies are used for sealing a gap between the shell and the optical cable. The optical cable leading-down plugging device provided by the invention has the technical effects of long-term plugging effect, difficulty in falling, no need of regular maintenance, good stability and time and labor saving in installation.

Description

Technical Field

[0001] The present invention belongs to the technical field of optical cables, and more specifically, relates to an optical cable downlead sealing device. Background Art

[0002] Optical cables are an important part of the power communication network and are the transmission media connecting various substations, distribution rooms, power supply stations, and important users. As the connection medium between the optical cable and the communication machine room, the substation framework guiding optical cable has particularity in its design, installation, maintenance, and emergency repair due to its special location and operating environment. The installation process and quality requirements of the power guiding optical cable are high. It is the weak link of the entire optical cable and a frequent occurrence point of optical cable failures. For aesthetic and safety considerations, optical cables are usually buried underground, and the connection between the substation and it is on the ground. Therefore, a section of downlead optical cable needs to be set up. A steel pipe is sleeved outside the downlead optical cable of the substation, and there is a gap between the upper opening of the steel pipe and the downlead optical cable, which needs to be sealed. In the prior art, the optical cable downlead sealing method is to use fireproof mud at the upper end of the downlead pipe to seal the gap between the optical cable and the downlead pipe. However, the fireproof mud is likely to fall off after running for a period of time, which is neither aesthetic nor easy to lose the sealing effect, and requires regular maintenance, resulting in a large daily workload. Therefore, it is necessary to design an optical cable downlead sealing device that can play a long-term sealing and plugging role to achieve simple installation, aesthetics, good sealing effect, and no need for regular maintenance. Summary of the Invention

[0003] The purpose of the present invention is to provide an optical cable downlead sealing device, aiming to solve the technical problems that the existing sealing method is easy to fall off, lose the sealing effect, requires regular maintenance, and has a large workload.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: an optical cable downlead sealing device, including: A housing, including a left half-shell and a right half-shell that are mutually butted and combined. The same end of the left half-shell and the right half-shell is provided with a first semi-circular groove for closely fitting with the optical cable. The other end of the left half-shell and the right half-shell is provided with a second semi-circular groove for cooperating with the steel pipe sleeved outside the optical cable. After the left half-shell and the right half-shell are mutually butted, the two first semi-circular grooves are combined to form a first circular hole suitable for the optical cable to pass through, and at the same time, the two second semi-circular grooves are combined to form a second circular hole suitable for the steel pipe to pass through; The first sealing assembly, which is multiple and is connected to one end of the left half-shell and the right half-shell close to the first semi-circular groove. After the left half-shell and the right half-shell are mutually butted, the multiple first sealing assemblies are combined into a circle and arranged around the optical cable. The first sealing assembly is used to seal the gap between the housing and the optical cable.

[0005] In a possible implementation manner, the first sealing assembly includes: A vertical plate, one end of which is connected to one end of the housing close to the first semi-circular groove, and a screw hole is formed in the middle of the vertical plate; A first set screw, which is arranged through the screw hole and is in threaded connection with the screw hole; A first arc-shaped seal, which is arc-shaped and is used to seal the gap between the inner wall of the housing and the optical cable. Its convex side faces the first set screw; A first bearing member, which is connected to the middle of the convex side of the arc of the first arc-shaped seal. The inner end of the first set screw is rotatably connected to the first bearing member. By screwing the first set screw, it is used to push the first arc-shaped seal to move radially along the optical cable to seal the gap between the inner wall of the housing and the optical cable. The ends of two adjacent first arc-shaped seals abut against each other, and multiple first arc-shaped seals are combined with each other to form a circle and surround the optical cable.

[0006] In a possible implementation manner, there are multiple second semi-circular grooves inside the housing. The widths of the multiple second semi-circular grooves gradually increase along the axial direction of the housing from the upper end of the steel pipe to the lower end of the steel pipe. After the left half-shell and the right half-shell are butted against each other, the apertures of the multiple second round holes formed by the combination of the two second semi-circular grooves gradually increase to adapt to the installation of steel pipes with different diameters. The steel pipe is placed in one of the second round holes.

[0007] In a possible implementation manner, multiple grooves evenly distributed along the axial direction of the housing are provided on the inner walls of the first semi-circular groove and the multiple second semi-circular grooves. A semi-circular sealing ring is filled in the grooves, and the semi-circular sealing ring is suitable for sealing the gap between the inner wall of the housing and the optical cable or the steel pipe.

[0008] In a possible implementation manner, a semi-circular convex structure protruding towards the inside of the housing is provided on the inner wall of the second semi-circular groove close to and away from the first semi-circular groove. The convex structures are evenly distributed along the axial direction of the housing and are spaced apart. The convex structures are used to seal the gap between the inner wall of the housing and the steel pipe.

[0009] In a possible implementation manner, multiple second sealing components are evenly distributed along the circumference at one end of the housing away from the first round hole. The second sealing components are suitable for sealing the gap between the inner wall of the housing and the outer wall of the steel pipe. Multiple second sealing components are combined with each other to form a circle and surround the outer circumferential wall of the steel pipe.

[0010] In a possible implementation, a plurality of mounting holes are evenly distributed along the circumference at one end of the housing away from the first round hole. A plurality of the second sealing assemblies respectively pass through the plurality of mounting holes. One end of the second sealing assembly located inside the housing is used to seal the gap between the housing and the steel pipe, and one end of the second sealing assembly located outside the housing is used for manual screwing to push the inner end thereof to move radially along the housing.

[0011] In a possible implementation, the second sealing assembly includes: A second set screw, which is arranged through the mounting hole and is in threaded connection with the mounting hole; A second arc-shaped sealing member, which is arc-shaped and is used to seal the gap between the inner wall of the housing and the steel pipe, and the convex side thereof faces the second set screw; A second bearing member, which is connected to the middle of the convex side of the second arc-shaped sealing member. The inner end of the second set screw is rotatably connected to the second bearing member. Screwing the second set screw is used to push the second arc-shaped sealing member to move radially along the housing to seal the gap between the inner wall of the housing and the steel pipe. The ends of two adjacent second arc-shaped sealing members abut against each other, and a plurality of the second arc-shaped sealing members are combined with each other to form a circle and surround the steel pipe.

[0012] In a possible implementation, both the left half-shell and the right half-shell include: An outer shell, and a plurality of the first sealing assemblies are all connected to one end of the outer shell. The outer wall of the outer shell has a plurality of mounting structures; A filling member, which is connected to the inner wall of the outer shell. The first semi-circular groove and the second semi-circular groove are both opened on the inner wall of the filling member; Fireproof coating, which is coated between the outer shell and the filling member.

[0013] In a possible implementation, a temperature and humidity sensor adapted to monitor the temperature and humidity inside the housing is provided on the inner wall of the left half-shell and / or the right half-shell, and a wire harness connecting the temperature and humidity sensor is led out from one end of the housing away from the first sealing assembly.

[0014] The cable duct sealing device provided by the present invention, compared with the prior art, includes a housing and a first sealing assembly. The housing includes a left half-shell and a right half-shell that are butt-jointed and combined with each other. At the same end of the left half-shell and the right half-shell, a first semi-circular groove for tightly fitting with the optical cable is provided. At the other end of the left half-shell and the right half-shell, a second semi-circular groove for fitting with the steel pipe sleeved outside the optical cable is provided. After the left half-shell and the right half-shell are butt-jointed, the two first semi-circular grooves are combined to form a first circular hole suitable for the optical cable to pass through, and at the same time, the two second semi-circular grooves are combined to form a second circular hole suitable for the steel pipe to pass through. The first sealing assembly is multiple and is connected to one end of the left half-shell and the right half-shell close to the first semi-circular groove. After the left half-shell and the right half-shell are butt-jointed, the multiple first sealing assemblies are combined to form a circle and are arranged around the optical cable. The first sealing assembly is used to seal the gap between the housing and the optical cable, solving the technical problems that the existing sealing methods are easy to fall off, lose the sealing function, require regular maintenance, and have a large workload. It has the technical effects of long-term sealing, not easy to fall off, no need for regular maintenance, good stability, and time-saving and labor-saving installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 FIG. 9 is a schematic view of the external structure of an optical cable duct sealing device provided by an embodiment of the present invention; Figure 2 FIG. 12 is a schematic view of the structure of the left half-shell or the right half-shell of an optical cable duct sealing device provided by an embodiment of the present invention (the dotted line structure passing through the inside of the housing in the figure represents the optical cable and the steel pipe); Figure 3 FIG. 15 is a schematic view of the structure of the housing filler of an optical cable duct sealing device provided by an embodiment of the present invention; Figure 4 FIG. 18 is a cross-sectional view of the structure of the second sealing assembly of an optical cable duct sealing device provided by an embodiment of the present invention; Figure 5 FIG. 21 is a three-dimensional view of the structure of the first sealing assembly of an optical cable duct sealing device provided by an embodiment of the present invention; Figure 6 FIG. 24 is a schematic view of the structure of the left half-shell or the right half-shell of an optical cable duct sealing device provided by another embodiment of the present invention.

[0017] Description of the reference numerals: 1. Housing; 11. Left half housing; 111. Outer housing; 112. Filler; 12. Right half housing; 13. First semi-circular groove; 14. Second semi-circular groove; 15. Groove; 16. Semi-circular sealing ring; 17. Protrusion structure; 18. Mounting hole; 19. Mounting structure; 2. First sealing assembly; 21. Vertical plate; 22. First set screw; 23. First arc-shaped seal; 24. First bearing member; 3. Second sealing assembly; 31. Second set screw; 32. Second arc-shaped seal; 33. Second bearing member; 4. Temperature and humidity sensor; 5. Wiring harness; 6. Protective plate. Detailed implementation manners

[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention will be 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 used to limit the present invention.

[0019] Please refer to Figures 1 to 6 simultaneously, and a cable leading-down sealing device provided by the present invention will be described.

[0020] The cable leading-down sealing device provided by the present invention includes a housing 1 and a first sealing assembly 2. The housing 1 includes a left half housing 11 and a right half housing 12 that are butted and combined with each other. The same end of the left half housing 11 and the right half housing 12 is provided with a first semi-circular groove 13 for tightly fitting with the cable. The other end of the left half housing 11 and the right half housing 12 is provided with a second semi-circular groove 14 that cooperates with a steel pipe sleeved outside the cable. After the left half housing 11 and the right half housing 12 are butted against each other, the two first semi-circular grooves 13 are combined to form a first round hole suitable for the cable to pass through, and at the same time, the two second semi-circular grooves 14 are combined to form a second round hole suitable for the steel pipe to pass through. The first sealing assemblies 2 are multiple and are all connected to one end of the left half housing 11 and the right half housing 12 close to the first semi-circular groove 13. After the left half housing 11 and the right half housing 12 are butted against each other, the multiple first sealing assemblies 2 are combined into a circle and arranged around the cable. The first sealing assembly 2 is used to seal the gap between the housing 1 and the cable.

[0021] Compared with the prior art, the cable leading-down sealing device provided by the present invention is provided with a first sealing assembly 2 at one end of the housing 1 to seal the gap between the housing 1 and the cable, prevent water from entering, be waterproof and moisture-proof, prevent rats and dust, have good sealing performance, solve the technical problems that the existing sealing methods are easy to fall off, lose the sealing function, require regular maintenance and have a large workload, have a long-term sealing effect, are not easy to fall off, do not require regular maintenance, have good stability, and are time-saving and labor-saving in installation.

[0022] In some embodiments, please refer to Figures 1 - 5, the first sealing assembly 2 includes a vertical plate 21, a first set screw 22, a first arc-shaped seal 23 and a first bearing member 24. One end of the vertical plate 21 is connected to one end of the housing 1 close to the first semi-circular groove 13. The middle of the vertical plate 21 has a screw hole; the first set screw 22 is arranged through the screw hole and is threadedly connected to the screw hole; the first arc-shaped seal 23 is arc-shaped and is used to seal the gap between the inner wall of the housing 1 and the optical cable. The convex side thereof faces the first set screw 22; the first bearing member 24 is connected to the middle of the arc-shaped convex side of the first arc-shaped seal 23. The inner end of the first set screw 22 forms a rotational connection with the first bearing member 24. By screwing the first set screw 22, it is used to push the first arc-shaped seal 23 to move radially along the optical cable to seal the gap between the inner wall of the housing 1 and the optical cable. The ends of two adjacent first arc-shaped seals 23 abut against each other. Multiple first arc-shaped seals 23 are combined with each other to form a circle and surround the optical cable. In this embodiment, the first sealing assembly 2 is set to four groups and is evenly distributed. When the housing 1 is in a vertical state, the vertical plate 21 is also in a vertical state and is arranged around the first circular hole. The position where the vertical plate 21 is arranged is not at the joint of the left half shell 11 and the right half shell 12, that is, it will not affect the docking combination between the left half shell 11 and the right half shell 12. That is, the joint of the left half shell 11 and the right half shell 12 is located between two adjacent first sealing assemblies 2. Of course, more first sealing assemblies 2 can also be set. In actual operation, when the left half shell 11 and the right half shell 12 are docked and buckled on the steel pipe and the optical cable, the gap between the upper end of the steel pipe and the optical cable can be blocked. Then, the multiple first sealing assemblies 2 can further play a sealing role, and the sealing effect is better. Manually screw the outer end of the first set screw 22, then the first set screw 22 moves inwards or outwards. When moving inwards, at this time the first arc-shaped seal 23 pushes towards the optical cable, then the gap between the housing 1 and the optical cable can be sealed. The first arc-shaped seal 23 is a seal in the prior art. It is arc-shaped and is mutually adapted to the outer arc of the optical cable. The first bearing plays a role of cooperating with the first set screw 22 to rotate and preventing the first arc-shaped seal 23 from rotating. At this time, only the first arc-shaped seal 23 is allowed to translate, that is, to push against the outer wall of the optical cable in contact and the lower end contacts the outer wall of the housing 1, effectively playing a sealing role.

[0023] To ensure that the present invention can adapt to the installation of steel pipes with different diameters, in some embodiments, please refer to Figures 1 - 5, there are multiple second semi-circular grooves 14 inside the housing 1. The widths of the multiple second semi-circular grooves 14 gradually increase along the axial direction of the housing 1 from the upper end of the steel pipe to the lower end of the steel pipe. After the left half shell 11 and the right half shell 12 are butted against each other, the apertures of the multiple second circular holes formed by combining the two second semi-circular grooves 14 gradually increase to adapt to the installation of steel pipes with different diameters. The steel pipe is placed in one of the second circular holes. The diameter of the first circular hole matches the diameter of the optical cable, and the diameter of the steel pipe depends on the selected steel pipe. If the selected steel pipe has a larger or smaller diameter, the steel pipe can be placed in the corresponding second circular hole, and thus the steel pipe can be surrounded and the upper opening thereof can be sealed. In this embodiment, there are three second semi-circular grooves 14 with different diameters. As viewed from Figure 2 it, the diameter gradually increases from top to bottom, so as to adapt to the installation of steel pipes with different diameters.

[0024] To achieve the sealing of the gap between the housing 1 and the optical cable or the steel pipe, in some embodiments, please refer to Figures 1 - 5 , multiple grooves 15 evenly distributed along the axial direction of the housing 1 are provided on the inner walls of the first semi-circular groove 13 and the multiple second semi-circular grooves 14. A semi-circular sealing ring 16 is filled in the groove 15. The semi-circular sealing ring 16 is suitable for sealing the gap between the inner wall of the housing 1 and the optical cable or the steel pipe. Multiple grooves 15 are provided and are evenly arranged at equal intervals along the Figure 2 direction from top to bottom in it. The cross-section of the groove 15 is semi-circular, so that the semi-circular sealing ring 16 can be accommodated, that is, the outer part of the semi-circular sealing ring 16 is placed in the groove 15, and the inner part protrudes from the groove 15. The inner part is used for contact sealing with the steel pipe or the optical cable. For the semi-circular sealing rings 16 on the left half shell 11 and the right half shell 12, when the left half shell 11 and the right half shell 12 are butted against each other, the ends of the semi-circular sealing rings 16 inside the grooves 15 on the left half shell 11 and the right half shell 12 can abut against each other and can be combined to form a circular structure, which can be regarded as a circular sealing ring surrounding the outer wall of the steel pipe or the outer wall of the optical cable. According to the different widths of the first semi-circular groove 13 and the multiple second semi-circular grooves 14, a semi-circular sealing ring 16 suitable for installation in the groove 15 is selected.

[0025] To further improve the sealing effect, in some embodiments, please refer to Figures 1 - 5 , a semi-circular convex structure 17 protruding towards the inside of the housing 1 is provided on the inner wall of the second semi-circular groove 14 close to and away from the first semi-circular groove 13. The convex structures 17 are evenly distributed along the axial direction of the housing 1 and are arranged at intervals. The convex structures 17 are used for sealing the gap between the inner wall of the housing 1 and the steel pipe. In Figure 2A plurality of convex structures 17 are arranged on the inner wall of the second semi-circular groove 14 located at the lower part of the middle and avoiding the groove 15. The convex structure 17 is also a semi-circular sealing ring, which plays a sealing effect. That is, the convex structure 17 and the semi-circular sealing ring 16 are combined with each other to form multiple seals to enhance the sealing effect. When the left half shell 11 and the right half shell 12 are butt-jointed and combined with each other, the ends of the semi-circular convex structures 17 on the left half shell 11 and the right half shell 12 can abut against each other, and the two groups of semi-circular convex structures 17 can be combined with each other to form a circular convex structure 17, which is arranged around the outer wall of the steel pipe or the outer wall of the optical cable.

[0026] To further enhance the sealing effect and prevent animals, plants, impurities, etc. from entering through the gap between the steel pipe and the housing 1, in some embodiments, please refer to Figures 1 - 5 , a plurality of second sealing components 3 are evenly distributed along the circumferential direction of one end of the housing 1 far from the first round hole. The second sealing components 3 are adapted to seal the gap between the inner wall of the housing 1 and the outer wall of the steel pipe. The plurality of second sealing components 3 are combined with each other to form a circle and are arranged around the outer circumferential wall of the steel pipe. A plurality of first sealing components 2 are evenly distributed along the outer circumferential direction of the housing 1. The plurality of first sealing components 2 are combined and spliced to form a circle and can be arranged around the outer wall of the steel pipe, effectively achieving sealing. The second sealing components 3 are arranged at the position with the second semi-circular groove 14, or at the position below the second semi-circular groove 14 as in Figure 2 . The lower end of the second semi-circular groove 14 located at the lowermost part in the present invention is not communicated with the bottom end of the housing 1. That is, a structure similar to the second semi-circular groove 14 is also provided at the lower end of the second semi-circular groove 14 at the lowermost end. At this time, it can be defined as a position specifically for installing the second sealing component 3. This structure is also a groove body and its width is the same as the width of the second sealing component 3 at its upper end. That is, the setting of the second sealing component 3 in the present invention does not affect the second semi-circular groove 14, nor does it affect the sealing of the gap between the steel pipe and the housing 1.

[0027] For the convenience of installing the second sealing component 3, in some embodiments, please refer to Figures 1 - 5 , a plurality of mounting holes 18 are evenly distributed along the circumferential direction of one end of the housing 1 far from the first round hole. The plurality of second sealing components 3 respectively pass through the plurality of mounting holes 18. The end of the second sealing component 3 located inside the housing 1 is used to seal the gap between the housing 1 and the steel pipe, and the end of the second sealing component 3 located outside the housing 1 is used for manual screwing to push and move its inner end along the radial direction of the housing 1. In this embodiment, eight mounting holes 18 are evenly arranged around the housing 1, corresponding to eight second sealing components 3. The inner ends of the eight second sealing components 3 are connected to each other, that is, the inner ends of adjacent two second sealing components 3 abut against each other to form a circle, surrounding the steel pipe, that is, the gap can be fully sealed. By screwing the outer end of the second sealing component 3, its inner end translates, realizing the pushing of the steel pipe and the sealing of the gap.

[0028] In some embodiments, please refer toFigures 1 - 5 , the second sealing assembly 3 includes a second setscrew 31, a second arc-shaped seal 32 and a second bearing member 33. The second setscrew 31 is arranged through the mounting hole 18 and is threadedly connected to the mounting hole 18; the second arc-shaped seal 32 is arc-shaped and is used to seal the gap between the inner wall of the housing 1 and the steel pipe, and its convex side faces the second setscrew 31; the second bearing member 33 is connected to the middle of the convex side of the second arc-shaped seal 32. The inner end of the second setscrew 31 forms a rotating connection with the second bearing member 33. By screwing the second setscrew 31, it is used to push the second arc-shaped seal 32 to move radially along the housing 1 to seal the gap between the inner wall of the housing 1 and the steel pipe. The ends of two adjacent second arc-shaped seals 32 abut against each other, and a plurality of second arc-shaped seals 32 are combined with each other to form a circle and surround the steel pipe. The second setscrew 31 passes through the mounting hole 18, and the outer end is the end placed outside the housing 1. By screwing the second setscrew 31, its inner end rotates inside the second bearing member 33, and at this time the second arc-shaped seal 32 does not rotate but only moves in the direction of the steel pipe, that is, only translates. When it abuts against the outer wall of the steel pipe, it can play the role and effect of sealing the gap. Both the first setscrew 22 and the second setscrew 31 are screws or bolts in the prior art. The second arc-shaped seal 32 is an arc-shaped sealing ring or sealing block in the prior art. The second bearing member 33 has the same structure as the first bearing member 24, and can play the role of rotation and prevent the second arc-shaped seal 32 and the first arc-shaped seal 23 from rotating.

[0029] In some embodiments, please refer to Figures 1 - 5 , both the left half shell 11 and the right half shell 12 include an outer shell 111, a filling member 112 and a fireproof coating. A plurality of first sealing assemblies 2 are all connected to one end of the outer shell 111, and the outer wall of the outer shell 111 has a plurality of mounting structures 19; the filling member 112 is connected to the inner wall of the outer shell 111, and the first semi-circular groove 13 and the second semi-circular groove 14 are both opened on the inner wall of the filling member 112; the fireproof coating is coated between the outer shell 111 and the filling member 112. The outer shell 111 is a structure of a thin shell, which is made of metal material. The shape of the outer shell 111 matches the shape of the filling member 112. The filling member 112 is a plastic part nested inside the outer shell 111, which plays the role of surrounding the optical cable and the steel pipe. Before the left half shell 11 and the right half shell 12 are assembled, sealant or the like can be applied to the docking surfaces of the two, so as to seal the gap between the two and play the role of waterproofing and fireproofing.

[0030] To realize real-time monitoring of the temperature and humidity inside the housing 1 and effectively prevent the temperature inside the housing 1 from being too high and the humidity from being too large, in some embodiments, please refer to Figures 1 - 5, a temperature and humidity sensor 4 suitable for monitoring the temperature and humidity inside the housing 1 is provided on the inner wall of the left half housing 11 and / or the right half housing 12, and the wire harness 5 connecting the temperature and humidity sensor 4 is led out from one end of the housing 1 away from the first sealing assembly 2. The temperature and humidity sensor 4 is a product of the prior art and is arranged in the space between the steel pipe and the inner wall of the housing 1. Preferably, it is arranged between the semi-circular sealing rings 16, which can monitor the temperature and humidity without affecting the sealing effect of the semi-circular sealing rings 16. The staff can receive the temperature information and humidity information inside the housing 1 in real time. The leading end of the wire harness 5 is led out from the bottom of the housing 1. Since the second sealing assembly 3 is arranged at the bottom of the housing 1, the wire harness 5 can pass through between the second sealing assembly 3 and the steel pipe or between two adjacent second sealing assemblies 3. At this time, it does not affect the sealing effect of the gap between the steel pipe and the housing 1 and can also prevent water and fire. Preferably, a display can be connected to the leading end of the wire harness 5, and the monitored temperature and humidity information can be displayed through the display for corresponding measures in the later stage.

[0031] In some embodiments, please refer to Figure 6 , a protective plate 6 is detachably connected (such as hung) to the outer end of the second setscrew 31 of the second sealing assembly 3. The protective plate 6 is S-shaped, with the upper end hung on the outer end of the second setscrew 31 and the lower end close to or in contact with the outer wall of the steel pipe, which plays a role in protecting the outer wall of the steel pipe. The plurality of protective plates 6 on the plurality of second setscrews 31 can enclose a frustum of a cone with a larger opening (diameter) at the upper end and a smaller opening (diameter) at the lower end. The adjacent two protective plates 6 are in contact with each other, which can form an enclosure or wrap around the steel pipe, that is, it can prevent pests, fire sources, etc. from entering the inside of the housing 1. The lower opening of the protective plate 6 is slightly larger than the diameter of the steel pipe. Preferably, sticky insect glue can be coated on the inner walls of the plurality of protective plates 6 near the lower end.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An optical cable down-leading plugging device, characterized in that: include: The housing comprises a left half shell and a right half shell which are butt-jointed and combined with each other, wherein the same end of the left half shell and the right half shell is provided with a first semicircular groove for tightly fitting with an optical cable, and the other end of the left half shell and the right half shell is provided with a second semicircular groove which fits with a steel pipe sleeved on the outer side of the optical cable, and after the left half shell and the right half shell are butt-jointed with each other, the two first semicircular grooves are combined to form a first circular hole suitable for the optical cable to pass through, and the two second semicircular grooves are combined to form a second circular hole suitable for the steel pipe to pass through; There are multiple first sealing components, all of which are connected to one end of the left half shell and the right half shell near the first semicircular groove. After the left half shell and the right half shell are butted against each other, multiple first sealing components are combined to form a circle and are arranged around the optical cable. The first sealing components are used to seal the gap between the shell and the optical cable.

2. The optical cable down-leading plugging device according to claim 1, characterized in that: The first sealing assembly comprises: A vertical plate, one end of which is connected to one end of the housing close to the first semicircular groove, and a screw hole is provided in the middle of the vertical plate; A first top screw, passing through the screw hole and being threadedly connected to the screw hole; A first arc-shaped sealing member, which is arc-shaped and used to seal the gap between the inner wall of the housing and the optical cable, with a raised side facing the first top screw; A first bearing member is connected to the middle part of one side of the arc-shaped protrusion of the first arc-shaped seal. The inner end of the first top screw is rotatably connected to the first bearing member. Screwing the first top screw is used to push the first arc-shaped seal to move radially along the optical cable to seal the gap between the inner wall of the shell and the optical cable. The ends of two adjacent first arc-shaped seals abut against each other. A plurality of the first arc-shaped seals are combined to form a circle and surround the optical cable.

3. The optical cable down-leading plugging device according to claim 1, characterized in that: There are multiple second semicircular grooves inside the shell, and the width of the multiple second semicircular grooves increases successively along the axial direction of the shell from the upper end to the lower end of the steel pipe. After the left half shell and the right half shell are connected with each other, the apertures of the multiple second circular holes formed by the combination of the two second semicircular grooves increase successively to adapt to the installation of steel pipes with different diameters, and the steel pipe is placed in one of the second circular holes.

4. The optical cable down-leading plugging device according to claim 3, characterized in that: The inner walls of the first semicircular groove and the second semicircular grooves are provided with multiple grooves evenly distributed along the axial direction of the shell. The grooves are filled with semicircular sealing rings, which are suitable for sealing the gap between the inner wall of the shell and the optical cable or steel pipe.

5. The optical cable down-leading plugging device according to claim 3, characterized in that: The inner wall of the second semicircular groove close to and away from the first semicircular groove is provided with a semicircular protrusion structure protruding toward the interior of the shell. The protrusion structure is evenly distributed in multiple numbers along the axial direction of the shell and is arranged at intervals. The protrusion structure is used to seal the gap between the inner wall of the shell and the steel pipe.

6. The optical cable down-leading plugging device according to claim 1, characterized in that: The shell has a plurality of second sealing components evenly distributed along its circumference at one end away from the first circular hole. The second sealing components are suitable for sealing the gap between the inner wall of the shell and the outer wall of the steel pipe. The plurality of second sealing components are combined to form a circle and are arranged around the outer circumferential wall of the steel pipe.

7. The optical cable down-leading plugging device according to claim 6, characterized in that: The shell has a plurality of mounting holes evenly distributed along its circumference at one end away from the first circular hole, and the plurality of second sealing components pass through the plurality of mounting holes accordingly. The second sealing component is located at one end inside the shell and is used to seal the gap between the shell and the steel pipe. The second sealing component is located at one end outside the shell and is used to be manually screwed to push its inner end to move radially along the shell.

8. The optical cable down-leading plugging device according to claim 7, characterized in that: The second sealing assembly comprises: A second top screw is arranged through the mounting hole and is threadedly connected to the mounting hole; A second arc-shaped sealing member, which is arc-shaped and used to seal the gap between the inner wall of the shell and the steel pipe, and a convex side of the second arc-shaped sealing member faces the second top screw; The second bearing member is connected to the middle part of one side of the arc-shaped protrusion of the second arc-shaped seal. The inner end of the second top screw is rotatably connected to the second bearing member. The second top screw is screwed to push the second arc-shaped seal to move radially along the shell to seal the gap between the inner wall of the shell and the steel pipe. The ends of two adjacent second arc-shaped seals abut against each other, and multiple second arc-shaped seals are combined to form a circle and surround the steel pipe.

9. The optical cable down-leading plugging device according to claim 1, characterized in that: The left half shell and the right half shell both include: A housing, a plurality of the first sealing components are connected to one end of the housing, and an outer wall of the housing has a plurality of mounting structures; A filling piece connected to the inner wall of the shell, wherein the first semicircular groove and the second semicircular groove are both provided on the inner wall of the filling piece; The fireproof coating is applied between the shell and the filling member.

10. The optical cable down-leading plugging device according to claim 1, characterized in that: The inner wall of the left half shell and / or the right half shell is provided with a temperature and humidity sensor suitable for monitoring the temperature and humidity inside the shell, and the wiring harness connecting the temperature and humidity sensor is led out from one end of the shell away from the first sealing assembly.

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