Buried redundant optical cable box

Abstract

The invention discloses a buried redundant optical cable box, and the box comprises a box body which is buried under the ground surface, and is internally provided with an optical cable placement cavity; the box cover is rotationally arranged on the box body and used for blocking the top of the box body and separating the optical cable placement cavity from the external environment; and a cable storage unit. According to the invention, the box body is installed in a pre-excavated hole in an outdoor site, the residual cable rack and the connector box are lifted from the box body to the ground surface and then are locked through the locking assembly, so that installation and maintenance personnel can maintain the residual cable above the ground surface, and after the maintenance is completed, the locking of the locking assembly is unlocked. By closing the box cover, the optical cable placing cavity is separated from the external environment, so that the movement above the ground surface does not affect the residual optical cable box buried under the ground surface, thereby effectively saving the land and reducing the occupation of the residual optical cable box on the surrounding space area while the maintenance convenience of the optical cable is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of optical cable laying, and in particular to an underground optical cable surplus cable box. Background Art

[0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] A spare cable box is a device used to store and protect optical cables. In order to meet the needs of subsequent operation and maintenance of the optical cables, a certain length of optical cables will be reserved after the optical cables enter the spare cable box. The remaining part is protected by coiling the optical cables and fixing them in the spare cable box.

[0004] However, traditional cable boxes are all ground-mounted, and they need to occupy the ground area of ​​the substation. With the increase of OPGW optical cables in substations, the demand for cable boxes is increasing. In actual projects, it is often encountered that the installation of cable boxes on the substation site is limited by the installation space on the site, resulting in insufficient or limited operating space for opening the box door during operation and maintenance. It is urgent to study a new type of cable box that saves floor space. Summary of the invention

[0005] The purpose of the present invention is to provide an underground optical cable surplus cable box to solve the above-mentioned shortcomings and achieve the purpose of saving floor space.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solution: an underground optical cable surplus cable box, comprising:

[0007] A box body, the box body is buried under the ground surface, and the box body has an optical cable placement cavity;

[0008] The box cover is rotatably arranged on the box body and is used to block the top of the box body and separate the optical cable placement cavity from the external environment;

[0009] A cable storage unit is arranged in the optical cable placement cavity, the cable storage unit comprises a joint box for connecting optical cables, a cable rack for winding redundant optical cables, and a guide rail for guiding the cable rack and the joint box to move up and down, and a locking assembly is arranged between the cable rack and the guide rail for limiting the cable rack and the joint box from continuing to move when the cable rack and the joint box move above the ground surface;

[0010] At least two threading units are used for allowing the optical cable to enter and exit the optical cable placement cavity.

[0011] Furthermore, a reinforcing mechanism is provided in the box body for supporting the box cover when the box cover blocks the top of the box body;

[0012] The reinforcing mechanism includes a fixing frame fixedly arranged on opposite sides of the optical cable placement cavity, a plurality of supporting beams are rotatably arranged on the fixing frame, and when the box cover blocks the top of the box body, the top of the supporting beam abuts against the bottom of the box cover, and the bottom of the fixing frame is provided with a gear that can rotate synchronously with the supporting beam and a rack that can reciprocate along the length direction of the fixing frame, and the rack is meshed with a plurality of gears on the corresponding fixing frame, one end of the rack is provided with a connecting bar, and the two racks are fixedly connected to the connecting bar, and at least one first tension spring is provided between the connecting bar and the box body, and the reinforcing mechanism also includes at least one top block arranged on the box cover, when the first tension spring is in a natural state, the supporting beam is not located in the moving area of ​​the remaining cable rack and the junction box, and the connecting bar is located in the rotating area of ​​the top block, and the top block is provided with an inclined surface at the end away from the box cover for pushing the connecting bar to move toward the side away from the first tension spring, and when the rack moves toward the side away from the first tension spring, the distance between the two relative supporting beams on different fixing frames gradually decreases.

[0013] Furthermore, the residual cable rack includes a frame body that can move up and down along the guide rail, the junction box is installed on the frame body, and at least four arc-shaped positioning plates are arranged on both sides of the frame body in the width direction. The cross-section of the arc-shaped positioning plate is L-shaped, and the arc-shaped positioning plate is composed of a first arc-shaped plate connected to the frame body and a second arc-shaped plate arranged on the side of the first arc-shaped plate away from the frame body. Multiple arc-shaped positioning plates on the same side are distributed in a ring shape, and an outer baffle plate is slidably arranged on the side of the arc-shaped positioning plate away from the frame body, and a storage groove is formed between the outer baffle plate and the first arc-shaped plate A first pull rod is connected to the outer baffle plate, and a guide sleeve is provided on the frame body and is sleeved outside the first pull rod. A spring sheet is provided between the guide sleeve and the outer baffle plate. When the spring sheet is in a natural state, the outer baffle plate blocks the storage groove. Adjustment disks are rotatably provided on both sides of the width direction of the frame body, and the axis line of the adjusting disk coincides with the axis line of the annularly distributed arc-shaped positioning plate. First pull ropes are respectively provided between the adjusting disk and each first pull rod on the same side. Rotating the adjusting disk can reel in the first pull rope to drive the corresponding first pull rod to move.

[0014] Furthermore, the locking assembly includes a locking seat arranged on the frame body, the locking seat is provided with a second pull rod that passes through the locking seat and can move toward and away from one side of the guide rail, the second pull rod is provided with a ring that can move synchronously with the second pull rod, and a second tension spring is provided between the ring and the locking seat, the second tension spring is used to push the second pull rod to move toward the locking seat so that one end of the second pull rod passes through the locking seat, and the guide rail is provided with a slot for the second pull rod to be inserted when the residual cable rack and the junction box are moved above the ground.

[0015] Furthermore, the number of the guide rails and the number of the locking components are both two, and the frame is provided with an unlocking component for synchronously unlocking the two locking components;

[0016] The unlocking assembly comprises a foot pedal movably arranged at the bottom of the frame and capable of moving up and down, and a second pull rope is arranged between the foot pedal and the second pull rod.

[0017] Furthermore, the threading unit includes a threading tube arranged on the box body and passing through the box body, the inner diameter of one end of the threading tube located outside the box body is smaller than the inner diameter of one end of the threading tube located inside the box body, the end of the threading tube located inside the box body is detachably provided with a plurality of arcuate sealing strips and a screw sleeve for squeezing the plurality of arcuate sealing strips against the optical cable, the outer diameter of the arcuate sealing strip is smaller than the inner diameter of one end of the threading tube located inside the box body, and larger than the inner diameter of one end of the threading tube located outside the box body, the arcuate sealing strip can be moved axially along the threading tube body and inserted into the threading tube body, and the arcuate sealing strip can be deformed when squeezed to form a seal between the optical cable and the threading tube body.

[0018] Furthermore, a positioning component for preventing the screw sleeve from separating from the arc-shaped sealing strip is also provided in the box body;

[0019] The positioning assembly includes a positioning sleeve arranged in the box body, a positioning rod penetrating the positioning sleeve and movable up and down along the positioning sleeve is arranged in the positioning sleeve, a groove for the optical cable to pass through is opened at the bottom end of the positioning rod, and the top end of the positioning rod abuts against the top block when the box cover blocks the top of the box body, and the bottom end of the positioning rod is located on the side of the screw sleeve away from the arc sealing strip and abuts against the screw sleeve.

[0020] The beneficial effects of the present invention are embodied in:

[0021] The present invention installs a box body in a hole excavated in advance in an outdoor venue, lifts the excess cable rack and the junction box from the box body, raises them to the ground surface, and locks them through a locking assembly, so that installation and maintenance personnel can perform maintenance on the excess optical cable above the ground surface; after the maintenance is completed, the locking assembly is released, the excess cable rack and the junction box are moved back into the box body, and the box cover is closed to separate the optical cable placement cavity from the external environment, so that activities above the ground will not affect the excess optical cable box buried under the ground, thereby effectively saving land and reducing the occupation of surrounding space area by the excess optical cable box without affecting the convenience of optical cable maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional view of the present invention;

[0023] Figure 2 This is a structural view of the reinforcing mechanism of the present invention when the box cover is opened;

[0024] Figure 3 for Figure 2 A local enlarged schematic diagram of point A shown;

[0025] Figure 4It is a schematic diagram of the installation of the locking component and the unlocking component of the present invention;

[0026] Figure 5 for Figure 4 A local enlarged schematic diagram of point B is shown;

[0027] Figure 6 An exploded view of the threading unit of the present invention;

[0028] Figure 7 It is a schematic diagram of the installation of the positioning assembly and the threading unit of the present invention.

[0029] In the figure:

[0030] 1. Box body;

[0031] 2. Box cover;

[0032] 3. Cable storage unit; 31. Joint box; 32. Cable rack; 321. Rack; 322. Arc-shaped positioning plate; 323. Outer baffle; 324. First pull rod; 325. Guide sleeve; 326. Adjustment plate; 327. First pull rope; 33. Guide rail; 34. Locking assembly; 341. Locking seat; 342. Second pull rod; 343. Ring; 344. Second tension spring;

[0033] 4. Threading unit; 41. Threading tube; 42. Arc sealing strip; 43. Screw sleeve;

[0034] 5. Strengthening mechanism; 51. Fixed frame; 52. Supporting beam; 53. Gear; 54. Rack; 55. Connecting strip; 56. First tension spring; 57. Top block;

[0035] 6. unlocking assembly; 61. foot pedal; 62. second pull rope;

[0036] 7. Positioning assembly; 71. Positioning sleeve; 72. Positioning rod. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-7 The present invention discloses an underground optical cable surplus cable box, comprising:

[0039] Box 1, which is buried under the ground surface and has an optical cable placement cavity inside the box 1;

[0040] The box cover 2 is rotatably disposed on the box body 1 and is used to block the top of the box body 1 to separate the optical cable placement cavity from the external environment;

[0041] The cable storage unit 3 is arranged in the optical cable placement cavity, and the cable storage unit 3 includes a joint box 31 for connecting optical cables, a surplus cable rack 32 for winding surplus optical cables, and a guide rail 33 for guiding the surplus cable rack 32 and the joint box 31 to move up and down. A locking component 34 is arranged between the surplus cable rack 32 and the guide rail 33 to limit the surplus cable rack 32 and the joint box 31 from continuing to move when the surplus cable rack 32 and the joint box 31 move above the ground surface;

[0042] At least two threading units 4 are used for allowing the optical cables to enter and exit the optical cable placement cavity.

[0043] The present invention installs the box body 1 in a hole excavated in advance in an outdoor venue, lifts the cable rack 32 and the junction box 31 from the box body 1, and after they rise to the ground surface, they are locked by the locking component 34, so that the installation and maintenance personnel can perform maintenance on the optical cable surplus lines above the ground surface. After the maintenance is completed, the locking component 34 is released, and the cable rack 32 and the junction box 31 are moved back into the box body 1. By closing the box cover 2, the optical cable placement cavity is separated from the external environment, so that activities above the ground will not affect the optical cable surplus cable box buried under the ground. Therefore, without affecting the convenience of optical cable maintenance, it can effectively save land and reduce the occupation of the surrounding space area by the optical cable surplus cable box.

[0044] It should be noted that, in order to ensure that the optical cable placement cavity can be separated from the external environment after the box cover 2 is closed, a sealing rubber ring is provided on the side of the box cover 2 that abuts against the box body 1 when the box cover 2 is closed.

[0045] In a specific implementation, in order to maintain a dry environment in the optical cable placement cavity, a dehumidification box for dehumidification is removably provided in the optical cable placement cavity, and a drainage pipe connected to the optical cable placement cavity is provided at the bottom of the box body 1 to drain the accumulated water in the optical cable placement cavity into a drainage ditch, cable trench or buried pipe.

[0046] In one embodiment, a reinforcing mechanism 5 is provided in the box body 1 for supporting the box cover 2 when the box cover 2 blocks the top of the box body 1;

[0047] The reinforcing mechanism 5 includes a fixing frame 51 fixedly arranged on opposite sides of the optical cable placement cavity, a plurality of supporting beams 52 are rotatably arranged on the fixing frame 51, and when the box cover 2 blocks the top of the box body 1, the top of the supporting beam 52 abuts against the bottom of the box cover 2, and a gear 53 that can rotate synchronously with the supporting beam 52 and a rack 54 that can reciprocate along the length direction of the fixing frame 51 are arranged at the bottom of the fixing frame 51, and the rack 54 is meshed with the plurality of gears 53 on the corresponding fixing frame 51, and a connecting bar 55 is arranged at one end of the rack 54, and the two racks 54 are fixedly connected to the connecting bar 55, and the connecting bar 55 is connected to the connecting bar 55. At least one first tension spring 56 is arranged between the box body 1 and the reinforcing mechanism 5, and the reinforcing mechanism 5 further comprises at least one top block 57 arranged on the box cover 2. When the first tension spring 56 is in a natural state, the supporting beam 52 is not located in the moving area of ​​the remaining cable rack 32 and the joint box 31, and the connecting bar 55 is located in the rotating area of ​​the top block 57. An inclined surface for pushing the connecting bar 55 to move away from the first tension spring 56 is arranged at one end of the top block 57 away from the box cover 2. When the rack 54 moves away from the first tension spring 56, the distance between the two relative supporting beams 52 on different fixing frames 51 gradually decreases.

[0048] By such a design, when the box cover 2 is closed, the top block 57 can push the connecting strip 55, so that the rack 54 moves to the side away from the first tension spring 56, so that the two relative supporting beams 52 on different fixing frames 51 are close to each other, thereby supporting and lifting the top box cover 2, sharing the force on the top of the box cover 2, and improving the force strength of the box cover 2. At the same time, the supporting beam 52 can be moved out of the moving area of ​​the residual cable rack 32 and the junction box 31 under the pull of the first tension spring 56 after the box cover 2 is opened, and will not affect the subsequent normal maintenance of the residual cable rack 32 and the junction box 31.

[0049] In one embodiment, the cable rack 32 includes a rack body 321 that can move up and down along the guide rail 33, the joint box 31 is installed on the rack body 321, and at least four arc-shaped positioning plates 322 are arranged on both sides of the rack body 321 in the width direction. The cross-section of the arc-shaped positioning plate 322 is L-shaped, and the arc-shaped positioning plate 322 is composed of a first arc-shaped plate connected to the rack body 321 and a second arc-shaped plate arranged on the side of the first arc-shaped plate away from the rack body 321. The multiple arc-shaped positioning plates 322 on the same side are distributed in a ring shape, and an outer baffle plate 323 is slidably arranged on the side of the arc-shaped positioning plate 322 away from the rack body 321, and a storage groove is formed between the outer baffle plate 323 and the first arc-shaped plate. A first pull rod 324 is connected to the outer baffle plate 323, and a guide sleeve 325 is provided on the frame body 321 and is sleeved on the outside of the first pull rod 324. A spring is provided between the guide sleeve 325 and the outer baffle plate 323. When the spring is in a natural state, the outer baffle plate 323 blocks the storage groove. Adjustment disks 326 are rotatably provided on both sides of the width direction of the frame body 321. The axis line of the adjustment disk 326 coincides with the axis line of the annularly distributed arc positioning plate 322. First pull ropes 327 are respectively provided between the adjustment disk 326 and each first pull rod 324 on the same side. Rotating the adjustment disk 326 can reel in the first pull rope 327 to drive the corresponding first pull rod 324 to move.

[0050] With this design, when the spring is in a natural state, the optical cable coiled in the arc-shaped positioning plate 322 on one side can be blocked and restricted by the outer baffle plate 323 and kept in the storage groove, ensuring that the optical cable will not be excessively bent and damaged. When the optical cable needs to be taken out for maintenance, the first pull rope 327 is reeled in by rotating the adjustment disk 326, and the multiple first pull rods 324 are pulled toward the adjustment disk 326, driving the outer baffle plate 323 to move so that it no longer blocks the removal of the optical cable, thereby effectively improving the convenience of optical cable maintenance.

[0051] In one embodiment, the locking assembly 34 includes a locking seat 341 arranged on the frame 321, and the locking seat 341 is provided with a second pull rod 342 that passes through the locking seat 341 and can move toward and away from the guide rail 33. The second pull rod 342 is provided with a ring 343 that can move synchronously with the second pull rod 342. A second tension spring 344 is provided between the ring 343 and the locking seat 341. The second tension spring 344 is used to push the second pull rod 342 to move toward the locking seat 341, so that one end of the second pull rod 342 passes through the locking seat 341, and the guide rail 33 is provided with a slot for the second pull rod 342 to be inserted when the residual cable rack 32 and the junction box 31 are moved above the ground.

[0052] With this design, when the remaining cable rack 32 and the junction box 31 are moved above the ground, the rack body 321 can be positioned by inserting the second pull rod 342 into the slot, so that maintenance personnel do not need to maintain the pulling action on the rack body 321 for a long time, reducing the difficulty of maintenance.

[0053] It should be noted that, in order to facilitate maintenance personnel to move the frame 321 up and down, a handle for maintenance personnel to hold is provided on the top of the frame 321.

[0054] In one embodiment, the number of the guide rails 33 and the number of the locking components 34 are both two, and the frame 321 is provided with an unlocking component 6 for synchronously unlocking the two locking components 34;

[0055] The unlocking assembly 6 includes a foot pedal 61 movably disposed at the bottom of the frame 321 and capable of moving up and down. A second pull rope 62 is disposed between the foot pedal 61 and the second pull rod 342 .

[0056] This design allows maintenance personnel to press down the foot pedal 61 after completing maintenance on the optical cable moved above the ground, so that the second pull rope 62 connected to the foot pedal 61 drives the second pull rod 342 to move out of the slot, thereby completing the rapid unlocking of the locking assembly 34 and making it convenient for maintenance personnel to lower the frame 321.

[0057] In one embodiment, the threading unit 4 includes a threading tube 41 which is arranged on the box body 1 and passes through the box body 1. The inner diameter of one end of the threading tube 41 located outside the box body 1 is smaller than the inner diameter of one end of the threading tube 41 located inside the box body 1. The end of the threading tube 41 located inside the box body 1 is detachably provided with multiple arcuate sealing strips 42 and a screw sleeve 43 for squeezing the multiple arcuate sealing strips 42 against the optical cable. The outer diameter of the arcuate sealing strip 42 is smaller than the inner diameter of one end of the threading tube 41 located inside the box body 1, and is larger than the inner diameter of one end of the threading tube 41 located outside the box body 1. The arcuate sealing strip 42 can move axially along the threading tube 41 and be inserted into the threading tube 41. When the arcuate sealing strip 42 is squeezed, it can deform to form a seal between the optical cable and the threading tube 41.

[0058] With this design, after the optical cable is passed through the threading tube 41 and the screw sleeve 43 in turn into the optical cable placement cavity, an arc-shaped sealing strip 42 can be placed between the threading tube 41 and the screw sleeve 43, and then the screw sleeve 43 can be tightened to make the screw sleeve 43 squeeze the arc-shaped sealing strip 42 to compress and deform, thereby sealing the gap between the optical cable and the threading tube 41. This can effectively reduce the entry of external moisture through the gap between the optical cable and the threading tube 41 when the optical cable spare cable box is in use, thereby improving the airtightness of the optical cable placement cavity.

[0059] In one embodiment, a positioning assembly 7 is further provided in the box body 1 for preventing the screw sleeve 43 from separating from the arc-shaped sealing strip 42;

[0060] The positioning assembly 7 includes a positioning sleeve 71 arranged in the box body 1, and a positioning rod 72 is arranged in the positioning sleeve 71, which passes through the positioning sleeve 71 and can move up and down along the positioning sleeve 71. The bottom end of the positioning rod 72 is provided with a groove for the optical cable to pass through. When the box cover 2 blocks the top of the box body 1, the top end of the positioning rod 72 abuts against the top block 57, and the bottom end of the positioning rod 72 is located on the side of the screw sleeve 43 away from the arc-shaped sealing strip 42 and abuts against the screw sleeve 43.

[0061] This design utilizes the push of the top block 57 on the positioning rod 72 when the box cover 2 is closed, so that the positioning rod 72 maintains the restriction on the screw sleeve 43 under the cooperation of the positioning sleeve 71 and the top block 57, thereby reducing the possibility of the screw sleeve 43 loosening due to vibration, thereby causing the arc sealing strip 42 to be poorly sealed.

[0062] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0063] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0064] In addition, "plurality" means two or more.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An underground optical cable surplus cable box, characterized in that: include: A box (1), the box (1) being buried below the ground surface, and the box (1) having an optical cable placement cavity; A box cover (2) is rotatably disposed on the box body (1) and is used to seal the top of the box body (1) to separate the optical cable placement cavity from the external environment; A cable storage unit (3) is arranged in the optical cable placement cavity, the cable storage unit (3) comprising a joint box (31) for connecting optical cables, a cable rack (32) for winding redundant optical cables, and a guide rail (33) for guiding the cable rack (32) and the joint box (31) to move up and down, and a locking assembly (34) is arranged between the cable rack (32) and the guide rail (33) for limiting the cable rack (32) and the joint box (31) from continuing to move when the cable rack (32) and the joint box (31) move above the ground surface; At least two threading units (4) are used for allowing the optical cable to enter and exit the optical cable placement cavity.

2. According to claim 1, the buried optical cable surplus cable box is characterized in that: The box body (1) is provided with a reinforcing mechanism (5) for supporting the box cover (2) when the box cover (2) blocks the top of the box body (1); The reinforcing mechanism (5) comprises a fixing frame (51) fixedly arranged on opposite sides of the optical cable placement cavity, a plurality of supporting beams (52) are rotatably arranged on the fixing frame (51), and when the box cover (2) blocks the top of the box body (1), the top of the supporting beam (52) abuts against the bottom of the box cover (2), and a gear (53) capable of rotating synchronously with the supporting beam (52) and a rack (54) capable of reciprocating along the length direction of the fixing frame (51) are arranged at the bottom of the fixing frame (51), and the rack (54) is meshed with a plurality of gears (53) on the corresponding fixing frame (51), and a connecting bar (55) is arranged at one end of the rack (54), and the two racks (54) are fixedly connected to the connecting bar (55). At least one first tension spring (56) is arranged between the connecting strip (55) and the box body (1); the reinforcing mechanism (5) further comprises at least one top block (57) arranged on the box cover (2); when the first tension spring (56) is in a natural state, the supporting beam (52) is not located in the moving area of ​​the remaining cable rack (32) and the joint box (31), and the connecting strip (55) is located in the rotating area of ​​the top block (57); an inclined surface for pushing the connecting strip (55) to move away from the first tension spring (56) is arranged at one end of the top block (57) away from the box cover (2); when the rack (54) moves away from the first tension spring (56), the distance between two relative supporting beams (52) on different fixing frames (51) gradually decreases.

3. According to claim 1, the buried optical cable surplus cable box is characterized in that: The residual cable rack (32) comprises a frame body (321) that can move up and down along a guide rail (33), the junction box (31) is mounted on the frame body (321), at least four arc-shaped positioning plates (322) are arranged on both sides of the frame body (321) in a width direction, the arc-shaped positioning plates (322) have an L-shaped cross section, and the arc-shaped positioning plates (322) are composed of a first arc-shaped plate connected to the frame body (321) and a second arc-shaped plate arranged on a side of the first arc-shaped plate away from the frame body (321), and a plurality of the arc-shaped positioning plates (322) on the same side are distributed in a ring shape, an outer baffle plate (323) is slidably arranged on a side of the arc-shaped positioning plate (322) away from the frame body (321), a storage groove is formed between the outer baffle plate (323) and the first arc-shaped plate, and the outer baffle plate (32 3) is connected to a first pull rod (324), the frame body (321) is provided with a guide sleeve (325) which is sleeved outside the first pull rod (324), a spring sheet is provided between the guide sleeve (325) and the outer baffle plate (323), when the spring sheet is in a natural state, the outer baffle plate (323) blocks the storage groove, and adjusting disks (326) are rotatably provided on both sides of the width direction of the frame body (321), the axis of the adjusting disk (326) coincides with the axis of the annularly distributed arc-shaped positioning plate (322), and first pull ropes (327) are respectively provided between the adjusting disk (326) and each first pull rod (324) on the same side, and rotating the adjusting disk (326) can reel in the first pull rope (327) to drive the corresponding first pull rod (324) to move.

4. According to claim 3, the buried optical cable surplus cable box is characterized in that: The locking assembly (34) includes a locking seat (341) arranged on the frame (321), the locking seat (341) is provided with a second pull rod (342) that passes through the locking seat (341) and can move toward and away from the guide rail (33), the second pull rod (342) is provided with a ring (343) that can move synchronously with the second pull rod (342), a second tension spring (344) is provided between the ring (343) and the locking seat (341), the second tension spring (344) is used to push the second pull rod (342) to move toward the locking seat (341) so that one end of the second pull rod (342) passes through the locking seat (341), and the guide rail (33) is provided with a slot for the second pull rod (342) to be inserted when the residual cable rack (32) and the junction box (31) are moved above the ground.

5. According to claim 4, the buried optical cable surplus cable box is characterized in that: The number of the guide rails (33) and the number of the locking components (34) are both two, and the frame (321) is provided with an unlocking component (6) for synchronously unlocking the two locking components (34); The unlocking assembly (6) comprises a foot pedal (61) movably arranged at the bottom of the frame (321) and capable of moving up and down, and a second pull rope (62) is arranged between the foot pedal (61) and the second pull rod (342).

6. The buried optical cable surplus cable box according to claim 2, characterized in that: The threading unit (4) comprises a threading tube (41) arranged on the box body (1) and passing through the box body (1); the inner diameter of one end of the threading tube (41) located outside the box body (1) is smaller than the inner diameter of one end of the threading tube (41) located inside the box body (1); the end of the threading tube (41) located inside the box body (1) is detachably provided with a plurality of arcuate sealing strips (42) and a screw sleeve (43) for squeezing the plurality of arcuate sealing strips (42) against the optical cable; the outer diameter of the arcuate sealing strip (42) is smaller than the inner diameter of one end of the threading tube (41) located inside the box body (1) and larger than the inner diameter of one end of the threading tube (41) located outside the box body (1); the arcuate sealing strip (42) can be moved axially along the threading tube (41) to be inserted into the threading tube (41); and when the arcuate sealing strip (42) is squeezed, it can be deformed to form a seal between the optical cable and the threading tube (41).

7. The underground optical cable surplus cable box according to claim 6, characterized in that: The box body (1) is also provided with a positioning assembly (7) for preventing the screw sleeve (43) from separating from the arc-shaped sealing strip (42); The positioning assembly (7) comprises a positioning sleeve (71) arranged in the box body (1), a positioning rod (72) penetrating the positioning sleeve (71) and movable up and down along the positioning sleeve (71) being arranged in the positioning sleeve (71), a groove for the optical cable to pass through being provided at the bottom end of the positioning rod (72), the top end of the positioning rod (72) abuts against the top block (57) when the box cover (2) blocks the top of the box body (1), and the bottom end of the positioning rod (72) is located on a side of the screw sleeve (43) away from the arc-shaped sealing strip (42) and abuts against the screw sleeve (43).

Images