Device for winding and unwinding optical cable at optical cable wellhead

Abstract

The invention relates to the technical field of electronic information engineering, in particular to an optical cable wellhead optical cable take-up and pay-off device which comprises two fixing plates, a fixing rod is fixedly installed between the two fixing plates, a reciprocating screw rod and a take-up and pay-off barrel are rotationally arranged between the two fixing plates, and the reciprocating screw rod is in threaded connection with a fixing ring. The fixing rings are slidably connected with the fixing rods, the fixing rings are fixedly connected with guide rings, and one of the fixing plates is provided with an extrusion assembly; a plurality of sets of sliding assemblies which are vertically arranged at equal intervals are installed in the guide ring, each sliding assembly comprises a sealing plate installed in the guide ring through a plurality of limiting springs, and a plurality of sealing cavities used for the sealing plates to move back and forth are formed in the guide ring. Impurities on the surface of an optical cable can be scraped off, the optical cable can be wound conveniently, the optical cable can be prevented from being corroded by the impurities, and winding treatment of the optical cable is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic information engineering, and in particular to a device for retracting and releasing optical cables at an optical cable wellhead. Background Art

[0002] With the continuous development of society and the continuous advancement of science and technology, the technologies related to electronic information engineering are also constantly improving. Electronic information engineering usually uses optical cables as transmission media and can be used as communication cable components individually or in groups. In the process of laying optical cables in cities, it is necessary to retract and release optical cables at the optical cable wellhead. In this process, optical cable retraction and release devices are generally used to retract and release optical cables.

[0003] At present, when using the device to reel in and out the optical cable, the optical cable can only be simply reeled in and out. When the optical cable is reeled in a harsh underground environment for a long time, the impurities adhering to the surface of the optical cable cannot be cleaned, which is not conducive to the reeling of the optical cable. In addition, the impurities adhere to the surface of the optical cable for a long time, which is easy to corrode the optical cable, which is not conducive to the reeling of the optical cable. Summary of the invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art. At present, when a device is used to reel in and release optical cables, the optical cables can only be simply reeled in and released. When the optical cables are reeled in and exposed to harsh underground environments for a long time, impurities adhering to the surface of the optical cables cannot be cleaned, which is not conducive to the reeling of the optical cables. In addition, impurities adhere to the surface of the optical cables for a long time, which easily corrodes the optical cables and is not conducive to the reeling of the optical cables. A device for reeling in and releasing optical cables at the wellhead is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An optical cable wellhead retractable optical cable device comprises two fixed plates, a fixed rod is fixedly installed between the two fixed plates, a reciprocating screw rod and a retractable cylinder are rotatably arranged between the two fixed plates, a fixed ring is threadedly connected to the reciprocating screw rod, the fixed ring and the fixed rod are slidably connected, a guide ring is fixedly connected to the fixed ring, and an extrusion assembly is arranged on one of the fixed plates;

[0007] A plurality of groups of sliding assemblies arranged vertically and equidistantly are installed in the guide ring, each group of the sliding assemblies includes a sealing plate installed inside the guide ring through a plurality of limit springs, a plurality of sealing cavities for the sealing plate to move back and forth are opened in the guide ring, a sealing block is fixedly connected to one side surface of each sealing plate, the sealing block is connected to a sliding rod through a first spring, a scraping plate is fixedly connected to one end of the sliding rod, and a plurality of oblique openings are opened inside the guide ring;

[0008] A moving assembly is arranged at the bottom of the guide ring, and the moving assembly includes a sliding ring connected to the fixed ring through a second spring, and a plurality of moving blocks arranged in a ring array are slidably connected to the guide ring, and each of the moving blocks is connected to the sliding ring through a hinged rod.

[0009] As a preferred embodiment, the extrusion assembly includes a cam fixedly mounted on the reciprocating screw, an airbag fixedly mounted on the fixed plate, an air inlet and an air outlet are provided on the airbag, a one-way valve is installed in the air inlet and the air outlet, a main pipe is fixedly mounted in the air outlet, and a first soft branch pipe and a second soft branch pipe are fixedly connected to the main pipe.

[0010] As a preferred solution, the first flexible branch pipe is fixedly connected to the sliding ring, and a plurality of exhaust pipes connected to the first flexible branch pipe are fixedly connected to the sliding ring, and the plurality of exhaust pipes are respectively connected to a plurality of corresponding sealed cavities.

[0011] As a preferred solution, a plurality of the sliding rods are fixedly connected with a first pull rope, each of the first pull ropes is fixedly connected to the inner wall of the guide ring, and a plurality of the sliding rods are fixedly connected with a bending rod.

[0012] As a preferred solution, a through hole is provided on an inner wall of one side of each of the sealing cavities, and a plurality of sealing cross bars are fixedly connected to a surface of one side of each of the moving blocks.

[0013] As a preferred solution, two circular plates are fixedly connected to the reciprocating screw rod, each of the circular plates is slidably connected to a plurality of guide rods arranged in a ring array, each of the guide rods is sleeved with a return spring, one end of the return spring is fixedly connected to the guide rod, and the other end of the return spring is fixedly connected to the circular plate, a gravity plate is slidably arranged between the two fixed plates, a through hole is opened on the gravity plate, a slider is slidably connected to one side of each of the fixed plates, and each of the sliders is connected to the gravity plate through a second pull rope.

[0014] As a preferred solution, two extrusion strips and a sealing ring are fixedly installed on the upper and lower surfaces of the gravity plate respectively, the second flexible branch pipe is fixedly connected to the gravity plate, and a plurality of sealing sleeves connected to the second flexible branch pipe are fixedly connected to the lower surface of the sealing ring, and a sealing strip with a T-shaped cross-section is slidably installed in each of the sealing sleeves, a third spring is sleeved on the sealing strip, one end of the third spring is fixedly connected to the sealing sleeve, and the other end of the third spring is fixedly connected to the sealing strip.

[0015] As a preferred solution, the gravity plate is provided with a circular hole connected to the plurality of sealing sleeves, and an L-shaped rod is fixedly connected to one of the fixing plates.

[0016] As a preferred solution, multiple rotating shafts are rotatably installed on the gravity plate, each of the rotating shafts is sleeved with a torsion spring, one end of the torsion spring is fixedly connected to the rotating shaft, the other end of the torsion spring is fixedly connected to the gravity plate, each of the rotating shafts is fixedly connected to a limiting rod, and each of the rotating shafts is connected to the corresponding sealing strip via a third pull rope.

[0017] As a preferred solution, a sealing plug with a T-shaped cross section is slidably connected in the main pipe, a fourth spring is sleeved on the sealing plug, one end of the fourth spring is fixedly connected to the sealing plug, and the other end of the fourth spring is fixedly connected to the main pipe.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. When the hard bristles on the scraping brush plate are in close contact with the surface of the optical cable, the surface of the optical cable will slide relative to the hard bristles of the scraping brush plate when the optical cable is rolled onto the reel. Under the scraping action of the hard bristles, impurities on the surface of the optical cable can be scraped off, and the scraping brush plate can be automatically adjusted according to the diameter of the rolled optical cable, so that the scraping brush plate of appropriate size can automatically fit with the surface of the optical cable, so as to better and more thoroughly scrape off impurities on the surface of the optical cable, which is beneficial to the coiling of the optical cable, and can prevent impurities from corroding the optical cable, which is beneficial to the reeling of the optical cable;

[0020] 2. When the multiple upper scraping brush plates move toward the center of the guide ring, the lower scraping brush plates will move away from the center of the guide ring. After the lower scraping brush plates move, the distance between the scraping brush plates and the inner wall of the guide ring is reduced, that is, the distance between the lower scraping brush plates is increased, so that when the upper scraping brush plates are attached to the surface of the optical cable, impurities brushed off the surface of the optical cable fall on the lower scraping brush plates, which effectively prevents impurities from accumulating on the surface of the scraping brush plates, so as to facilitate the subsequent use of the scraping brush plates;

[0021] 3. When each limit rod rotates from a horizontal state to an inclined state, one end of each limit rod will contact the inner walls on each side of the wellhead after rotation, which can effectively prevent the two fixed plates from moving at will, so as to improve the stability of the device when retracting and releasing the optical cable, which is beneficial to the retraction and release of the optical cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front structural schematic diagram of an optical cable wellhead retractable optical cable device proposed by the present invention;

[0023] Figure 2 This is a left-side structural schematic diagram of an optical cable wellhead retractable optical cable device proposed by the present invention;

[0024] Figure 3 It is a schematic diagram of the partial internal structure of the guide ring in the present invention;

[0025] Figure 4 It is a bottom view partial structural diagram of the sealing ring and the limiting rod in the present invention;

[0026] Figure 5 It is a schematic diagram of the partial structure of the guide ring and the sliding ring in the present invention;

[0027] Figure 6 for Figure 2 A is a schematic diagram of the partially enlarged structure of the middle part;

[0028] Figure 7 for Figure 3 A schematic diagram of the partially enlarged structure of B in the middle;

[0029] Figure 8 It is a schematic diagram of the partial internal structure of the sealing sleeve in the present invention;

[0030] Fig. 9 It is a schematic diagram of the partial internal structure of the main pipe in the present invention;

[0031] Fig.10 A schematic diagram of the top view of the structure of an optical cable wellhead retractable optical cable device proposed by the present invention;

[0032] Fig.11 This is a right side structural schematic diagram of an optical cable wellhead retractable optical cable device proposed by the present invention.

[0033] In the figure: 1 fixed plate, 2 round plate, 3 fixed rod, 4 fixed ring, 5 retractable cylinder, 6 reciprocating screw rod, 7 main pipe, 8 guide ring, 9 hinged rod, 10 gravity plate, 11 sealing sleeve, 12 sliding ring, 13 extrusion strip, 14 sealing cross bar, 15 moving block, 16 airbag, 17 slider, 18 cam, 19 first soft branch pipe, 20 second pull rope, 21 second soft branch pipe, 22 guide rod, 23 L-shaped rod, 24 round hole, 25 sealing ring, 26 sealing strip, 27 limit rod, 28 oblique mouth, 29 rotating shaft, 30 torsion spring, 31 third pull rope, 32 through hole, 33 sealing chamber, 34 scraping plate, 35 first pull rope, 36 sliding rod, 37 sealing block, 38 exhaust pipe, 39 sealing plate, 40 first spring, 41 bending rod, 42 limit spring, 43 third spring, 44 fourth spring, 45 sealing plug, 46 second spring. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] Reference Figure 1-Figure 11, a device for collecting and releasing optical cable at the wellhead of an optical cable comprises two fixed plates 1, a fixed rod 3 is fixedly installed between the two fixed plates 1, a reciprocating screw rod 6 and a collecting and releasing cylinder 5 are rotatably arranged between the two fixed plates 1, a fixed ring 4 is threadedly connected to the reciprocating screw rod 6, the fixed ring 4 and the fixed rod 3 are slidably connected, a guide ring 8 is fixedly connected to the fixed ring 4, an extrusion assembly is arranged on one of the fixed plates 1, a plurality of groups of sliding assemblies arranged vertically equidistantly are arranged in the guide ring 8, each group of sliding assemblies comprises a sealing plate 39 installed inside the guide ring 8 through a plurality of limit springs 42, a plurality of sealing cavities 33 for the sealing plate 39 to move back and forth are provided in the guide ring 8, a sealing block 37 is fixedly connected to a side surface of each sealing plate 39, the sealing block 37 is connected to a sliding rod 36 through a first spring 40, a scraping brush plate 34 is fixedly connected to one end of the sliding rod 36, and a plurality of oblique openings 28 are provided inside the guide ring 8.

[0036] A moving assembly is provided at the bottom of the guide ring 8, and the moving assembly includes a sliding ring 12 connected to the fixed ring 4 through a second spring 46. A plurality of moving blocks 15 arranged in a ring array are slidably connected to the guide ring 8, and each moving block 15 is connected to the sliding ring 12 through a hinge rod 9. The extrusion assembly includes a cam 18 fixedly mounted on the reciprocating screw rod 6, and an air bag 16 is fixedly mounted on the fixed plate 1. The air bag 16 is provided with an air inlet and an air outlet, and a one-way valve is installed in the air inlet and the air outlet. A fixed air bag 16 is provided in the air outlet. A main pipe 7 is installed, and a first soft branch pipe 19 and a second soft branch pipe 21 are fixedly connected to the main pipe 7. During the rotation of the cam 18, the airbag 16 will be squeezed and separated for many times. Only the upper surface of the airbag 16 is fixedly connected to the fixed plate 1. After the airbag 16 is squeezed, the gas inside it will be discharged to the inside of the main pipe 7 through the air outlet. The one-way valve can effectively prevent the gas inside the main pipe 7 from flowing back to the inside of the airbag 16. After the gas enters the inside of the main pipe 7, it will be discharged through the first soft branch pipe 19 and the second soft branch pipe 21 respectively.

[0037] The first flexible branch pipe 19 is fixedly connected to the sliding ring 12, and a plurality of exhaust pipes 38 connected to the first flexible branch pipe 19 are fixedly connected to the sliding ring 12. The plurality of exhaust pipes 38 are respectively connected to a plurality of corresponding sealed chambers 33. After the gas is discharged through the first flexible branch pipe 19, the gas will be discharged to the interior of the plurality of sealed chambers 33 at the bottom through the plurality of exhaust pipes 38. Among them, a plurality of sliding rods 36 are fixedly connected to a first pull rope 35, and each first pull rope 35 is fixedly connected to the inner wall of the guide ring 8. Among them, a plurality of sliding rods 36 are fixedly connected to a bending rod 41. When the plurality of upper sliding rods 36 move to a certain position with the sealing block 37 and continue to move in the same direction, each bending rod 41 will respectively move together with the plurality of inelastic first pull ropes 35 below. Under the transmission action of each first pull rope 35, each lower sliding rod 36 will shrink toward the inside of the corresponding sealing block 37.

[0038] A through hole 32 is provided on the inner wall of one side of each sealing cavity 33, and a plurality of sealing cross bars 14 are fixedly connected to the surface of one side of each moving block 15. Two circular plates 2 are fixedly connected to the reciprocating screw 6, and a plurality of guide rods 22 arranged in a ring array are slidably connected to each circular plate 2. A return spring is sleeved on each guide rod 22, and one end of the return spring is fixedly connected to the guide rod 22, and the other end of the return spring is fixedly connected to the circular plate 2. A gravity plate 10 is slidably arranged between the two fixed plates 1, and a through hole is provided on the gravity plate 10. A slider 17 is slidably connected to one side of each fixed plate 1, and each slider 17 is connected to the gravity plate 10 through a second pull rope 20. Two extrusion strips 13 and a sealing ring 25 are fixedly installed on the upper and lower surfaces of the gravity plate 10 respectively. The second soft branch pipe 21 is fixedly connected to the gravity plate 10, and a plurality of sealing sleeves 11 connected to the second soft branch pipe 21 are fixedly connected to the lower surface of the sealing ring 25.

[0039] A sealing strip 26 with a T-shaped cross section is slidably installed in each sealing sleeve 11, and a third spring 43 is sleeved on the sealing strip 26. One end of the third spring 43 is fixedly connected to the sealing sleeve 11, and the other end of the third spring 43 is fixedly connected to the sealing strip 26. A circular hole 24 connected to multiple sealing sleeves 11 is opened on the gravity plate 10, and an L-shaped rod 23 is fixedly connected to one of the fixed plates 1. During the rotation of the two circular plates 2, the multiple guide rods 22 will extend toward the outside of the circular plates 2 under the action of centrifugal force. During the rotation of the multiple guide rods 22, the upper surfaces of the two sliders 17 will be squeezed respectively, so that the two sliders 17 move down at the same time. Under the transmission action of the second pull rope 20, the gravity plate 10 will move up between the two fixed plates 1, and the two extrusion strips 13 will move up together against the bottom surface of the sliding ring 12 during the upward movement, and the second spring 46 will be deformed.

[0040] After the sliding ring 12 moves up, the inclination angle of the hinged rod 9 changes, and each moving block 15 will move toward the direction close to the surface of the guide ring 8. After each sealing cross bar 14 moves, one end thereof will pass through the corresponding through hole 32, and the sealing cross bar 14 has good sealing performance when connected to the through hole 32, so the through hole 32 can be sealed and blocked. After the gravity plate 10 moves up, one end of the L-shaped rod 23 will be inserted into the circular hole 24, and the sealing performance of the L-shaped rod 23 when connected to the circular hole 24 is good, so the circular hole 24 can be sealed and blocked.

[0041] A plurality of rotating shafts 29 are rotatably mounted on the gravity plate 10, and a torsion spring 30 is sleeved on each rotating shaft 29. One end of the torsion spring 30 is fixedly connected to the rotating shaft 29, and the other end of the torsion spring 30 is fixedly connected to the gravity plate 10. A limiting rod 27 is fixedly connected to each rotating shaft 29, and each rotating shaft 29 is connected to the corresponding sealing strip 26 through a third pull rope 31. After the gas enters each sealing sleeve 11 through the second flexible branch pipe 21, it will push the plurality of sealing strips 26 to move downward in each sealing sleeve 11, and the third spring 43 will be deformed. During the movement of each sealing strip 26, under the transmission action of each third pull rope 31, the plurality of rotating shafts 29 will be deflected at the same time, the torsion spring 30 will be deformed, and each limiting rod 27 will also rotate.

[0042] A sealing plug 45 with a T-shaped cross section is slidably connected inside the main pipe 7, and a fourth spring 44 is sleeved on the sealing plug 45. One end of the fourth spring 44 is fixedly connected to the sealing plug 45, and the other end of the fourth spring 44 is fixedly connected to the main pipe 7. When the sealing plates 39 and the sealing strips 26 cannot move, the gas in the airbag 16 enters the main pipe 7 and pushes the T-shaped sealing plug 45 to move inside the main pipe 7. After the sealing plug 45 moves, a gap exists between the sealing plug 45 and the inner wall of the main pipe 7, and the gas can be discharged through the gap.

[0043] In the present invention, when in use, first move the two fixed plates 1 to a suitable position, and the through hole on the gravity plate 10 is located directly above the optical cable wellhead, and then one end of the optical cable is passed through the through hole and the guide ring 8 in sequence, and contacts with the surface of the fixed ring 4 and is wound around the retracting cylinder 5, and then the two motors respectively drive the reciprocating screw 6 and the retracting cylinder 5 to rotate, and during the rotation of the retracting cylinder 5, the optical cable can be reeled up, and during the rotation of the reciprocating screw 6, the fixed ring 4 and the guide ring 8 will move back and forth along the reciprocating screw 6, and the optical cable will also move back and forth together, so that the optical cable can be evenly reeled onto the retracting cylinder 5.

[0044] During the rotation of the reciprocating screw 6, the two circular plates 2 and the cam 18 are driven to rotate together. During the rotation of the two circular plates 2, the multiple guide rods 22 are extended to the outside of the circular plates 2 under the action of centrifugal force, and the return springs are deformed at the same time. During the rotation of the multiple guide rods 22, the upper surfaces of the two sliders 17 are squeezed respectively, so that the two sliders 17 move downward at the same time. Since each fixed plate 1 is provided with a mounting hole for the corresponding second pull rope 20 to pass through, and one end of the inelastic second pull rope 20 is fixedly connected to the corresponding slider 17, and the other end is fixedly connected to the gravity plate 10 Then, during the downward movement of the slider 17, under the transmission action of the second pull rope 20, the gravity plate 10 will move up between the two fixed plates 1, and during the upward movement of the two extrusion bars 13, they will move up together with the bottom surface of the sliding ring 12, and the sliding ring 12 will slide relative to the fixed ring 4 at the same time. Since the two ends of the second spring 46 are respectively fixedly connected to the fixed ring 4 and the sliding ring 12, the second spring 46 is deformed. After the gravity plate 10 moves up, one end of the L-shaped rod 23 will be inserted into the circular hole 24, and the L-shaped rod 23 has good sealing performance when connected to the circular hole 24, so the circular hole 24 can be sealed and blocked.

[0045] After the sliding ring 12 moves up, since one end of each hinged rod 9 is hinged to the sliding ring 12, and the other end is hinged to the corresponding moving block 15, the inclination angle of the hinged rod 9 changes, and each moving block 15 will move toward the direction close to the surface of the guide ring 8. After each sealing cross bar 14 moves, one end thereof will pass through the corresponding through hole 32, and the sealing cross bar 14 has good sealing performance when connected to the through hole 32, so the through hole 32 can be sealed and blocked. During the rotation of the circular plate 2, one end of each sealing cross bar 14 will always be inserted into the corresponding through hole 32 to seal and block the through hole 32, and one end of the L-shaped rod 23 will also always be inserted into the circular hole 24 to seal and block the circular hole 24.

[0046] During the rotation of the cam 18, the airbag 16 will be squeezed and separated from the airbag 16 for many times. Only the upper surface of the airbag 16 is fixedly connected to the fixing plate 1. After the airbag 16 is squeezed, the gas inside it will be discharged to the inside of the main pipe 7 through the gas outlet. The one-way valve (not shown) can effectively prevent the gas inside the main pipe 7 from flowing back to the inside of the airbag 16. The elastic force of the fourth spring 44 is greater than the total elastic force of the limit spring 42 and the third spring 43. After the gas enters the inside of the main pipe 7, it will be discharged through the first soft branch pipe 19 and the second soft branch pipe 21 respectively. The gas passes through the first soft branch pipe 1 9 After being discharged, the gas will be discharged to the interior of the multiple sealed cavities 33 at the bottom through multiple exhaust pipes 38 respectively. Each exhaust pipe 38 has good sealing performance when connected to the inner wall of the guide ring 8. Since the sealing plate 39 has good sealing performance when connected to the inner wall of the sealed cavity 33, after the gas enters the interior of each of the bottom sealed cavities 33, it will push each sealing plate 39 to slide inside the sealed cavity 33. Since one end of each limit spring 42 is fixedly connected to the surface of the sealing plate 39, and the other end is fixedly connected to the inner wall of the sealed cavity 33, the limit spring 42 is deformed at the same time.

[0047] The length of the sealing cavity 33 increases from bottom to top, and the movable distances of the multiple sealing plates 39 are different. The uppermost sealing plate 39 has the largest movable distance in the sealing cavity 33. During the movement of the multiple sealing plates 39, the multiple sealing blocks 37 will slide inside the sealing cavity 33 at the same time, and the L-shaped scraping plates 34 at one end of each sliding rod 36 will move toward the middle of the guide ring 8 at the same time. If the scraping plates 34 have not been in contact with the surface of the optical cable, when the surface of the sealing plate 39 is in contact with the right inner wall of the sealing cavity 33 (such as the attached Figure 3 As shown), the sealing plate 39 will move from one side of the corresponding bevel 28 to the other side, and the gas will move through each bevel 28 to the inside of each sealing cavity 33 above, and push the sealing plate 39 inside the sealing cavity 33 to move until the hard bristles on the surface of the scraper plate 34 corresponding to one end of the slide rod 36 are in close contact with the surface of the optical cable. During the process of winding the optical cable onto the winding drum 5, the surface of the optical cable will slide relative to the hard bristles of the scraper plate 34. Under the scraping action of the hard bristles, impurities on the surface of the optical cable can be scraped off, and it can be automatically adjusted according to the diameter of the wound optical cable, so that the scraper plate 34 of appropriate size can automatically fit with the surface of the optical cable, so as to better and more thoroughly scrape off impurities on the surface of the optical cable, which is beneficial to the winding of the optical cable, and can prevent impurities from corroding the optical cable, which is beneficial to the winding of the optical cable.

[0048] When the gas is discharged from the sealing cavity 33 below to the inside of the sealing cavity 33 above through the oblique opening 28, the multiple upper slide bars 36 move to a certain position along with the sealing block 37 and continue to move in the same direction, and each bending rod 41 will respectively press against the multiple inelastic first pull ropes 35 below to move together. Since one end of each first pull rope 35 is fixedly connected to the inner wall of the guide ring 8, and the other end is fixedly connected to the slide bar 36 below, under the transmission action of each first pull rope 35, each slide bar 36 below will move to the inner wall of the corresponding sealing block 37. The first spring 40 is deformed because one end of the first spring 40 is fixedly connected to the slide bar 36 and the other end is fixedly connected to the sealing block 37. After the scraping plates 34 below move, the distance between each scraping plate 34 and the inner wall of the guide ring 8 is reduced, that is, the distance between each scraping plate 34 below is increased, so as to prevent impurities brushed off the surface of the optical cable from falling on the scraping plates 34 below when the upper scraping plates 34 are in contact with the surface of the optical cable, thereby effectively preventing impurities from accumulating on the surface of the scraping plates 34, so as to facilitate the subsequent use of the scraping plates 34.

[0049] After the gas enters each sealing sleeve 11 through the second flexible branch pipe 21, it pushes the multiple sealing strips 26 to move down inside each sealing sleeve 11, and the third spring 43 is deformed. Since one end of each third pull rope 31 is wound around the corresponding rotating shaft 29 and cannot be separated from the rotating shaft 29, and the other end is fixedly connected to the corresponding sealing strip 26, during the movement of each sealing strip 26, under the transmission action of each third pull rope 31, the multiple rotating shafts 29 will be deflected at the same time, the torsion spring 30 will be deformed, and each limit rod 27 will be rotated from horizontal to vertical. When the state is rotated to the inclined state, one end of each limit rod 27 will contact the inner walls on each side of the wellhead after rotation, which can effectively prevent the two fixing plates 1 from moving at will, so as to improve the stability of the device when retracting and releasing the optical cable, which is beneficial to the retracting and releasing of the optical cable. When each sealing plate 39 and each sealing strip 26 cannot move, the gas inside the airbag 16 enters the main pipe 7, which will push the T-shaped sealing plug 45 to move inside the main pipe 7. After the sealing plug 45 moves, there will be a gap between the sealing plug 45 and the inner wall of the main pipe 7, and the gas can be discharged through the gap.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An optical cable wellhead retractable optical cable device, characterized in that: It comprises two fixed plates (1), a fixed rod (3) is fixedly installed between the two fixed plates (1), a reciprocating screw rod (6) and a retracting cylinder (5) are rotatably arranged between the two fixed plates (1), a fixed ring (4) is threadedly connected to the reciprocating screw rod (6), the fixed ring (4) and the fixed rod (3) are slidably connected, a guide ring (8) is fixedly connected to the fixed ring (4), and an extrusion component is arranged on one of the fixed plates (1); The guide ring (8) is provided with a plurality of groups of sliding components which are arranged equidistantly in the vertical direction. Each group of sliding components comprises a sealing plate (39) which is installed inside the guide ring (8) via a plurality of limit springs (42). The guide ring (8) is provided with a plurality of sealing cavities (33) for the sealing plate (39) to move back and forth. A sealing block (37) is fixedly connected to a surface of one side of each sealing plate (39). The sealing block (37) is connected to a sliding rod (36) via a first spring (40). A scraping plate (34) is fixedly connected to one end of the sliding rod (36). A plurality of oblique openings (28) are provided inside the guide ring (8). A moving assembly is arranged at the bottom of the guide ring (8), and the moving assembly comprises a sliding ring (12) connected to the fixed ring (4) via a second spring (46); a plurality of moving blocks (15) arranged in a ring array are slidably connected to the guide ring (8), and each of the moving blocks (15) is connected to the sliding ring (12) via a hinge rod (9).

2. The optical cable wellhead retractable optical cable device according to claim 1, characterized in that: The extrusion assembly comprises a cam (18) fixedly mounted on the reciprocating screw (6); an air bag (16) fixedly mounted on the fixed plate (1); an air inlet and an air outlet are provided on the air bag (16); both the air inlet and the air outlet are provided with a one-way valve; a main pipe (7) is fixedly mounted in the air outlet; a first soft branch pipe (19) and a second soft branch pipe (21) are fixedly connected to the main pipe (7).

3. The optical cable wellhead retractable optical cable device according to claim 2, characterized in that: The first flexible branch pipe (19) is fixedly connected to the sliding ring (12); a plurality of exhaust pipes (38) in communication with the first flexible branch pipe (19) are fixedly connected to the sliding ring (12); the plurality of exhaust pipes (38) are respectively in communication with a plurality of corresponding sealing chambers (33).

4. The optical cable wellhead retractable optical cable device according to claim 1, characterized in that: A plurality of the sliding rods (36) are fixedly connected to a first pull rope (35), each of the first pull ropes (35) is fixedly connected to the inner wall of the guide ring (8), and a plurality of the sliding rods (36) are fixedly connected to a bending rod (41).

5. The optical cable wellhead retractable optical cable device according to claim 1, characterized in that: A through hole (32) is provided on one inner wall of each of the sealing cavities (33), and a plurality of sealing cross bars (14) are fixedly connected to one surface of one side of each of the moving blocks (15).

6. The optical cable wellhead retractable optical cable device according to claim 2, characterized in that: Two circular plates (2) are fixedly connected to the reciprocating screw rod (6), and each of the circular plates (2) is slidably connected to a plurality of guide rods (22) arranged in a ring array, and each of the guide rods (22) is sleeved with a return spring, one end of the return spring is fixedly connected to the guide rod (22), and the other end of the return spring is fixedly connected to the circular plate (2), a gravity plate (10) is slidably arranged between the two fixed plates (1), and a through hole is opened on the gravity plate (10), and a slider (17) is slidably connected to one side of each of the fixed plates (1), and each of the sliders (17) is connected to the gravity plate (10) through a second pull rope (20).

7. The optical cable wellhead retractable optical cable device according to claim 6, characterized in that: Two extrusion strips (13) and a sealing ring (25) are fixedly mounted on the upper and lower surfaces of the gravity plate (10), respectively; the second flexible branch pipe (21) is fixedly connected to the gravity plate (10); a plurality of sealing sleeves (11) in communication with the second flexible branch pipe (21) are fixedly connected to the lower surface of the sealing ring (25); a sealing strip (26) having a T-shaped cross section is slidably mounted in each of the sealing sleeves (11); a third spring (43) is sleeved on the sealing strip (26); one end of the third spring (43) is fixedly connected to the sealing sleeve (11), and the other end of the third spring (43) is fixedly connected to the sealing strip (26).

8. The optical cable wellhead retractable optical cable device according to claim 7, characterized in that: The gravity plate (10) is provided with a circular hole (24) communicating with a plurality of the sealing sleeves (11), and an L-shaped rod (23) is fixedly connected to one of the fixing plates (1).

9. The optical cable wellhead retractable optical cable device according to claim 7, characterized in that: A plurality of rotating shafts (29) are rotatably mounted on the gravity plate (10), each of the rotating shafts (29) is sleeved with a torsion spring (30), one end of the torsion spring (30) is fixedly connected to the rotating shaft (29), and the other end of the torsion spring (30) is fixedly connected to the gravity plate (10), each of the rotating shafts (29) is fixedly connected to a limiting rod (27), and each of the rotating shafts (29) is connected to the corresponding sealing strip (26) via a third pull rope (31).

10. The optical cable wellhead retractable optical cable device according to claim 2, characterized in that: A sealing plug (45) having a T-shaped cross section is slidably connected inside the main pipe (7), a fourth spring (44) is sleeved on the sealing plug (45), one end of the fourth spring (44) is fixedly connected to the sealing plug (45), and the other end of the fourth spring (44) is fixedly connected to the main pipe (7).

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