CN115833021A - Submarine cable fixing device - Google Patents

Abstract

The invention discloses a submarine cable fixing device, which relates to the technical field of submarine cable fixing equipment and comprises a protection shell and protection plates rotatably connected to the upper ends of two sides of the protection shell, wherein the protection plates are connected with the outer side wall of the protection shell through elastic pieces, the upper end of the protection shell is detachably connected with a cover plate, the lower end of the protection shell is provided with a fixing rod, a fixing cavity is arranged inside the fixing rod, a puncture hole is formed in the wall of the fixing cavity, a plurality of fixing spines are arranged inside the fixing cavity, and the fixing spines pass in and out of the puncture hole through a driving mechanism. The invention can improve the fixing effect on the submarine cable.

Description

Submarine cable fixing device

Technical Field

The invention relates to the technical field of submarine cable fixing equipment, in particular to a submarine cable fixing device.

Background

Submarine cable means a cable laid on the seabed and used for telecommunication transmission. Under the influence of sea traffic, submarine cables are often dragged by ship anchors in a hooking manner, so that the submarine cables are damaged.

In this regard, chinese patent application No. CN 202111162021X discloses an anchor damage preventing device for submarine cable with protective plate and a working method thereof, as shown in fig. 1, the device includes a protective housing 2 and a protective plate 3 rotatably connected to upper ends of both sides of the protective housing 2, and the protective plate 3 is connected to an outer sidewall of the protective housing 2 by an elastic member 4. When the ship anchor falls on the protection plate 3, the ship anchor slides to the bottom of the protection plate 3 to hook the protection plate 3, and in the process that the ship anchor moves forwards slowly, the protection plate 3 is pulled by the ship anchor to turn upwards, so that the ship anchor crosses the protection plate 3 to leave a protection part, and the hooking damage of the ship anchor to the submarine cable 1 is avoided.

However, the ship anchor is heavy and even if the submarine cable cannot be hooked due to the protection of the device, the device is pushed during the movement of the ship anchor, and the submarine cable protected by the device is pushed. Therefore, it is also required to improve the fixing effect of the submarine cable.

Disclosure of Invention

The invention provides a submarine cable fixing device aiming at the defects in the prior art, and the submarine cable fixing device can improve the fixing effect on submarine cables.

In order to realize the purpose, the invention provides the following technical scheme:

the utility model provides a submarine cable fixing device, connects in the protection shield of protection casing both sides upper end including protection casing and rotation, and the protection shield passes through the elastic component to be connected with the lateral wall of protection casing, and the upper end of protection casing can be dismantled and is connected with the apron, and the lower extreme of protection casing is equipped with the dead lever, and the inside of dead lever is equipped with fixed chamber, and the chamber wall in fixed chamber is equipped with the puncture hole, and the inside in fixed chamber is equipped with a plurality of fixed stings, and fixed thorn passes through actuating mechanism business turn over puncture hole.

Further, actuating mechanism includes well core rod, sleeve, guide holder, the vertical well core rod that is equipped with in fixed intracavity, the sleeve cover is established on well core rod, sleeve and the vertical sliding connection of well core rod, sleeve rotate to be connected with fixed thorn, the chamber wall in fixed chamber is equipped with and is used for the fixed thorn of guide to follow the guide holder of puncture hole business turn over, the upper end of dead lever is equipped with the activity hole, and telescopic upper end stretches out from the activity hole the inside of protection casing.

Furthermore, actuating mechanism still including being used for push-and-pull from top to bottom telescopic push-and-pull subassembly, the push-and-pull subassembly is located the inside of protecting the casing, the push-and-pull subassembly includes base, driver, crank, connecting rod, and the inside of protecting the casing is equipped with the base, is equipped with on the base to be used for driving crank pivoted driver, and the crank is being kept away from the one end of driver and is being rotated with the connecting rod and be connected, and the connecting rod is being kept away from articulate one end and is being rotated with telescopic upper end and be connected.

Furthermore, the driver comprises a waterproof motor, the waterproof motor is arranged on the base, and the crank is arranged on an output shaft of the waterproof motor.

Further, the driver includes pivot, positioning screw, the base is equipped with and is used for rotating the hole with pivot normal running fit and be used for with the location screw that rotates the hole intercommunication, the circumference of pivot is equipped with a plurality of jacks, positioning screw in proper order with location screw, jack cooperation, the tip of pivot is equipped with the crank.

Furthermore, the positioning screw rod is connected with the base through a connecting rope at one end far away from the rotating shaft.

Further, the chamber wall in fixed chamber is equipped with and is used for sheltering from the first baffle and the second baffle of puncture hole, first baffle and second baffle all with the vertical sliding connection in chamber wall in fixed chamber, the upper end of first baffle is connected with the chamber wall in fixed chamber through first elastic component, the lower extreme of first baffle with fixed thorn butt, the lower extreme of second baffle is connected with the chamber wall in fixed chamber through the second elastic component, the upper end and the fixed thorn butt of second baffle.

Further, the inside of well core rod is equipped with central cavity, the lower extreme of dead lever is equipped with first fixed orifices and a plurality of second fixed orifices that distribute around first fixed orifices, first fixed orifices and central cavity intercommunication, the upper end of second fixed orifices with fixed cavity intercommunication, the lower extreme and the first fixed orifices intercommunication of second fixed orifices, be equipped with in the sleeve and stretch into the piston rod of the inside of central cavity, the lower extreme of piston rod is equipped with the piston.

Compared with the prior art, the invention has the beneficial effects that:

1. in the fixing device, the fixing rod and the fixing thorn which are positioned at the lower end of the protection shell can be firmly pricked into the submarine sediment, when the protection shell is pushed by external force, the fixing rod and the fixing thorn can improve the resistance of the protection shell, the stability of the protection shell on the seabed is improved, the submarine cable protected by the protection shell can be more stable, and the fixing effect on the submarine cable is improved.

2. In the fixing device, when the fixing pricks do not extend out of the fixing rod, the resistance of the fixing rod inserted into seabed sediment can be reduced, so that the protective shell is convenient to install, and the installation efficiency is improved.

3. In the fixing device, the cover plate is arranged, on one hand, when the cover plate is opened, the sleeve can be operated, and the fixed stabs can be adjusted to enter or exit the fixed rod; on the other hand, when the submarine cable is overhauled, the cover plate can be opened to overhaul the submarine cable, and convenience in overhaul operation is facilitated.

4. According to the fixing device, the push-pull assembly is arranged, so that the state that the fixed stabs extend out of the puncture hole is not stabilized only by friction resistance between seabed sediment and the fixed stabs, and the state of the fixed stabs can be further stabilized by the push-pull assembly.

5. The invention provides two drivers in a push-pull assembly, wherein the first driver comprises a waterproof motor, so that manual operation is not needed, and the push-pull assembly is convenient and labor-saving. The second driver comprises a rotating shaft and a positioning screw, and is of a pure mechanical structure although manual labor is used, so that the maintenance is more convenient.

6. In the fixing device, the fixing thorn can swing up and down in the puncture hole with a certain amplitude in the process of entering and exiting the puncture hole, when the fixing thorn swings, the first baffle is always abutted against the upper surface of the fixing thorn under the pushing of the elastic force of the first elastic piece, and the second baffle is always abutted against the lower surface of the fixing thorn under the pushing of the elastic force of the second elastic piece, so that the first baffle and the second baffle can always shield the puncture hole in the process of entering and exiting the puncture hole, and therefore, seabed silt is prevented from entering the fixing cavity of the fixing rod from the puncture hole, the smooth entering and exiting of the fixing thorn into and from the puncture hole is favorably ensured, and the operation and maintenance are further facilitated.

7. Unexpectedly, through letting first baffle and second baffle all with the vertical sliding fit of fixed cavity wall, and let first baffle receive the promotion of first elastic component, let the second baffle receive the promotion of second elastic component, can be when fixed thorn advances the puncture hole, drive first baffle and second baffle and remove together, the linkage of fixed thorn and first baffle and second baffle has been realized, thereby need not to put aside first baffle and second baffle alone and expose the puncture hole, be favorable to the simplified operation, and efficiency is improved.

8. Because the seabed sediment can enter the first fixing hole, the central cavity and the second fixing hole, the contact area of the fixing rod and the seabed sediment can be increased, the resistance of the fixing rod which is pulled out is further increased, the stability of the protection shell is further improved, and the fixing effect on the submarine cable is further improved.

9. What has been unexpected is that the setting of center chamber, first fixed orifices, second fixed orifices, piston rod can be when the installation protection casing, need not the workman and carry out additional operation to the dead lever of protection casing lower extreme, and the inside sleeve of dead lever just can shift up through the thrust transmission of piston, piston rod in proper order under the promotion of seabed silt, then stretches out fixed thorn puncture hole from the dead lever, realizes fixing, is favorable to the simplified operation, reduces the construction degree of difficulty, improves the efficiency of construction.

10. When the fixing device is cleaned and replaced, the sediment in the central cavity of the central rod and the sediment in the fixing cavity of the fixing rod need to be cleaned. And for silt in the central cavity, the sleeve is directly pushed downwards, the piston rod is pushed downwards by the sleeve, the piston rod is pushed downwards, and the silt in the central cavity can be discharged from the lower end of the first fixing hole by pushing the silt downwards by the piston. To the silt that gets into fixed intracavity, silt can be discharged from the lower extreme of first fixed orifices from the first fixed orifices of second fixed orifices falling down under self action of gravity again, has realized the clearance to the fixed intracavity silt of dead lever, is favorable to avoiding silt to pile up and hinders the business turn over of fixed thorn from puncture hole department in fixed intracavity, makes things convenient for the maintenance in fixed chamber.

11. Unexpectedly, the arrangement of the central cavity, the first fixing hole, the second fixing hole, the piston and the piston rod can also dredge the blocked second fixing hole, so that the maintenance effect of the fixing cavity in the fixing rod is further improved, and the use reliability of the fixing device is guaranteed. Specifically, when the second fixed orifices of mediation jam, the lower extreme of first fixed orifices is plugged up to the workman, then upwards the pull sleeve, shift up the piston, make the negative pressure appear in the lower part of first fixed orifices and central intracavity, so that attract the silt in the second fixed orifices in the lower part of first fixed orifices and central chamber, later loosen the shutoff to first fixed orifices lower extreme again, and promote the piston downwards, just can discharge the lower extreme of silt from first fixed orifices, above-mentioned process just can realize the mediation to the second fixed orifices.

Drawings

FIG. 1 is a schematic structural diagram of the prior art;

fig. 2 is a perspective view of the submarine cable fixing device according to embodiment 1 with the cover removed;

FIG. 3 is a perspective view of a submarine cable-fixing device according to embodiment 1;

FIG. 4 is a first schematic view of the use of the submarine cable fixing device according to embodiment 1;

FIG. 5 is a second schematic view of the use of the submarine cable-fixing device according to example 1;

FIG. 6 is an assembled perspective view of the fixing rod, the fixing pin, the center rod, the sleeve, and the guide holder according to embodiment 1;

FIG. 7 is an assembled front view of the fixing rod, the fixing pin, the center rod, the sleeve, and the guide holder according to embodiment 1;

FIG. 8 is an assembled perspective view of the fixing lever, the fixing barb, the center rod, the sleeve, and the guide holder of example 1 taken away;

FIG. 9 is an assembled top view of the fixing rod, the fixing pin, the center rod, the sleeve, and the guide holder according to example 1;

FIG. 10 isbase:Sub>A cross-sectional view taken at A-A of FIG. 9;

FIG. 11 is a state change diagram of FIG. 10;

FIG. 12 is a perspective view of the submarine cable fixing device according to embodiment 2, using a first type of driver, with the cover plate removed;

FIG. 13 is a first schematic view showing the use of the submarine cable fixing device according to embodiment 2 using a first type of drive;

FIG. 14 is a second schematic view showing the use of the submarine cable fixing device according to embodiment 2 using a first type of drive;

fig. 15 is a perspective view of a submarine cable fixing device according to embodiment 2, using a second type of drive;

FIG. 16 is a schematic view showing the assembly of the base, the rotary shaft, and the positioning screw in embodiment 2;

FIG. 17 is an assembled perspective view of the fixing rod, fixing thorn, center rod, sleeve, and guide holder of embodiment 3;

FIG. 18 is an assembled perspective view of the holding rod, holding spike, center rod, hub, and guide housing of example 3 taken in section;

FIG. 19 is an assembled top view of the fixing rod, fixing thorn, center rod, sleeve, and guide base of example 3;

FIG. 20 is a cross-sectional view taken at B-B of FIG. 19;

FIG. 21 is an enlarged view of a portion of FIG. 20 at C;

FIG. 22 is a state change diagram of FIG. 20;

FIG. 23 is a partial enlarged view of FIG. 22 at D

FIG. 24 is an assembled view of the fixing rod, the fixing pin, the center rod, the sleeve, and the guide holder according to example 4;

FIG. 25 is an enlarged view of a portion of FIG. 24 at E;

FIG. 26 is a first partial schematic view showing the structure of the fixing rod, the central rod and the sleeve according to embodiment 4;

fig. 27 is a partial structural view of the fixing rod, the central rod, and the sleeve according to embodiment 4.

In the figure:

1-submarine cable, 2-protective shell, 3-protective plate, 4-elastic piece,

5-cover plate, 6-support seat, 7-fastener, 8-fixed rod, 801-fixed cavity, 802-movable hole, 803-piercing hole, 804-sliding groove, 805-first fixed hole, 806 second fixed hole, 9-fixed thorn, 10-central rod, 1001-central cavity, 11-sleeve, 12-guide column,

13-base, 1301-rotating hole, 1302-positioning screw hole, 14-crank, 15-connecting rod, 16-waterproof motor, 17-rotating shaft, 1701-inserting hole, 18-positioning screw, 19-connecting rope, 20-handle,

21-a first apron, 22-a second apron, 23-a first elastic element, 24-a second elastic element, 25-a first abutment, 26-a second abutment,

27-piston rod, 28-piston.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Example 1: as shown in fig. 2 to 5, the submarine cable fixing device includes a protection housing 2 and protection plates 3, the protection plates 3 are disposed on both sides of the protection housing 2, the upper end of the protection plate 3 is rotatably connected to the upper end of the protection housing 2, the protection plate 3 is connected to the outer side wall of the protection housing 2 through an elastic member 4, and the elastic member 4 is a tension spring.

As shown in fig. 2 to 3, the upper end of the protective casing 2 is detachably connected with a cover plate 5, and the embodiment shows a detachable connection mode: install supporting seat 6 at the inside upper end of protecting casing 2, apron 5 is placed on supporting seat 6, and the upper end at protecting casing 2 is installed through fasteners 7 such as screw, bolt to apron 5 rethread. After the fastener 7 is removed, the cover 5 is removed, and the inside of the protective case 2 can be opened.

As shown in fig. 4-5, a fixing rod 8 is installed at the lower end of the protection casing 2, the fixing rod 8 is used for being inserted into sediment on the sea bottom, as shown in fig. 6-11, a fixing cavity 801 is arranged inside the fixing rod 8, a movable hole 802 used for being communicated with the fixing cavity 801 is arranged at the upper end of the fixing rod 8, a puncture hole 803 is arranged on the cavity wall of the fixing cavity 801, a plurality of fixing spines 9 are arranged inside the fixing cavity 801, and the fixing spines 9 pass in and out of the puncture hole 803 through a driving mechanism.

As shown in fig. 2 to 11, the driving mechanism includes a center rod 10, a sleeve 11, and a guide holder. Well core rod 10 is located in fixed chamber 801, well core rod 10's lower extreme is installed at the bottom of fixed chamber 801's chamber, sleeve 11 cover is established on well core rod 10, sleeve 11 and the vertical sliding fit of well core rod 10, and sleeve 11's upper end can stretch out the inside of protection casing 2 from activity hole 802, it is connected with fixed thorn 9 to rotate on the sleeve 11, the guide seat that is used for guiding fixed thorn 9 from puncture hole 803 business turn over is installed to fixed chamber 801's chamber wall, in this embodiment, the guide seat includes guide post 12, guide post 12 is located the top of fixed thorn 9.

When the protective casing 2 is installed, the following steps can be performed: (1) The fixing rods 8 at the lower ends of the individual protective casings 2 are inserted into the sediment in the sea bottom along the extending direction of the submarine cable 1 until the protective casings 2 fall on the surface of the sediment in the sea bottom, at which time the submarine cable 1 can be covered by the individual protective casings 2 and protected by the protective casings 2, at which time the fixing stabs 9 do not protrude from the piercing holes 803, see fig. 4. (2) The cover plate 5 is opened, the inner cavity of the protective shell 2 is exposed, the sleeve 11 is pulled upwards, the sleeve 11 moves upwards along the central rod 10, the fixed thorns 9 on the sleeve 11 also move upwards gradually, the fixed thorns 9 extend out of the puncture holes 803 to the sediment of the sea bottom gradually under the limiting guidance of the guide columns 12, and under the action of friction resistance between the sediment of the sea bottom and the surfaces of the fixed thorns 9, the fixed thorns 9 can keep the state of extending out of the puncture holes 803, and then the protective shell 2 can be installed, see fig. 5.

When the protection shell 2 is installed, the fixing rod 8 and the fixing thorns 9 can be firmly pricked into seabed sediment, when the protection shell 2 is pushed by external force, the fixing rod 8 and the fixing thorns 9 can improve the resistance of the protection shell 2, the stability of the protection shell 2 on the seabed is improved, the submarine cable 1 protected by the protection shell 2 can be more stable, and the fixing effect of the submarine cable 1 is improved.

And, when fixed thorn 9 does not stretch out from the inside of dead lever 8, can reduce the resistance that dead lever 8 inserted seabed silt to protection casing 2 is installed to the convenience, is favorable to improving installation effectiveness.

In addition, the cover plate 5 is arranged, on one hand, when the cover plate 5 is opened, the sleeve 11 is operated, and the fixing pricks 9 can be adjusted to enter or exit the fixing rods 8; on the other hand, when the submarine cable 1 is overhauled, the submarine cable 1 can be overhauled by opening the cover plate 5, and convenience in overhauling operation is facilitated.

Example 2: the embodiment 2 is further improved on the basis of the embodiment 1: as shown in fig. 12-16, the drive mechanism further comprises a push-pull assembly for pushing the sleeve 11 up and down, the push-pull assembly being provided inside the protective casing 2.

As shown in fig. 12-15, this embodiment shows one form of construction of the push-pull assembly: the push-pull assembly comprises a base 13, a driver, a crank 14 and a connecting rod 15. The protective shell 2 is internally provided with a base 13, the base 13 is provided with a driver for driving a crank 14 to rotate, one end of the crank 14 far away from the driver is rotatably connected with a connecting rod 15, and one end of the connecting rod 15 far away from the crank 14 is rotatably connected with the upper end of the sleeve 11.

When the driver drives the crank 14 to rotate, the sleeve 11 can be moved up and down by the linkage of the link 15. The sleeve 11 moves up and down once every time the crank 14 rotates one revolution. As the sleeve 11 is moved up, the fixation spike 9 protrudes from the puncture 803, see fig. 14. When the fixing spike 9 protrudes from the puncture 803, the driver is stopped, and the state in which the fixing spike 9 protrudes from the puncture 803 can be maintained. As the sleeve 11 is moved down, the fixation spike 9 is retracted from the puncture 803 into the fixation cavity 801, see fig. 13.

The present embodiment presents two structural forms of the driver:

as shown in fig. 12-14, the first driver includes a waterproof motor 16, the waterproof motor 16 is mounted on the base 13, and a crank 14 is mounted on an output shaft of the waterproof motor 16. The crank 14 is driven to rotate by starting the waterproof motor 16, and then the sleeve 11 is driven to move up and down by the linkage of the connecting rod 15.

As shown in fig. 15-16, the second driver includes a rotating shaft 17 and a positioning screw 18, the base 13 is provided with a rotating hole 1301 for rotationally matching with the rotating shaft 17 and a positioning screw hole 1302 for communicating with the rotating hole 1301, a plurality of insertion holes 1701 are arranged in the circumferential direction of the rotating shaft 17, the positioning screw 18 is sequentially matched with the positioning screw hole 1302 and the insertion holes 1701, and a crank 14 is mounted at the end of the rotating shaft 17. After the positioning screw 18 is screwed out, the crank 14 can be driven to rotate by manually rotating the rotating shaft 17, and then the sleeve 11 is driven to move up and down through the linkage of the connecting rod 15. After the rotation of the rotating shaft 17 is completed, the positioning screw 18 can be screwed into the positioning screw hole 1302 and the insertion hole 1701 again, so that the rotating shaft 17 is fixed.

The first driver does not need manual operation, and is convenient and labor-saving. Although the second driver uses manpower, the second driver is of a pure mechanical structure, and is more convenient to overhaul and maintain.

As shown in fig. 15 to 16, for the second type of driver, when screwing the positioning screw 18, in order to avoid the positioning screw 18 from being lost after being detached, a connecting rope 19 is tied at one end of the positioning screw 18 far away from the rotating shaft 17, and the connecting rope 19 is tied at one end of the positioning screw 18 far away from the base 13. When the positioning screw 18 is screwed out, the positioning screw 18 cannot be lost due to the connection of the connecting rope 19, so that the use is convenient, and the cost is saved.

As shown in fig. 15, in order to rotate the rotary shaft 17, a handle 20 is attached to an end of the rotary shaft 17 remote from the crank 14.

Compared with embodiment 1, in embodiment 2, by providing the push-pull assembly, the state that the fixed stabs 9 extend out of the puncture holes 803 is not stabilized only by the frictional resistance between the sediment on the seabed and the fixed stabs 9, and the state that the fixed stabs 9 extend out of the puncture holes can be further stabilized by using the push-pull assembly. For example, the state of the sleeve 11 and the stationary barb 9 can be stably maintained when the driver in the push-pull assembly does not drive the crank 14 to rotate. Thereby further improving the stability of the fixing thorn 9 and further improving the effect of the fixing device for fixing the submarine cable 1.

Example 3: in this embodiment 3, on the basis of embodiment 1 or embodiment 2, a further improvement is made: as shown in fig. 18 and 20-23, a first baffle 21 and a second baffle 22 for covering the puncture 803 are arranged on the cavity wall of the fixing cavity 801, and the first baffle 21 and the second baffle 22 are both provided with a protrusion (not shown), and the protrusion is used for vertically sliding matching with a sliding groove 804 arranged on the cavity wall of the fixing cavity 801.

As shown in fig. 18 and 20-23, the first baffle 21 is located above the fixing spur 9, the upper end of the first baffle 21 is connected to the first support 25 mounted on the cavity wall of the fixing cavity 801 through the first elastic member 23, the first elastic member 23 can be a spring, and the lower end of the first baffle 21 abuts against the fixing spur 9.

As shown in fig. 18 and 20-23, the second baffle 22 is located below the fixing spine 9, the lower end of the second baffle 22 is connected to a second support 26 mounted on the wall of the fixing cavity 801 through a second elastic member 24, the second elastic member 24 may also be a spring, and the upper end of the second baffle 22 abuts against the fixing spine 9.

In the process that fixed thorn 9 passes in and out puncture hole 803, fixed thorn 9 can appear the luffing motion of certain range in puncture hole 803, when fixed thorn 9 swung, first baffle 21 contradicts always at the upper surface of fixed thorn 9 under the elastic force of first elastic component 23 promotes, second baffle 22 contradicts always at the lower surface of fixed thorn 9 under the elastic force of second elastic component 24 promotes, so that at the in-process of fixed thorn 9 passing in and out puncture hole 803, let first baffle 21 and second baffle 22 all can shelter from puncture hole 803 all the time, thereby help preventing seabed silt from getting into the fixed chamber 801 of dead lever 8 from puncture hole 803, thereby be favorable to guaranteeing that fixed thorn 9 passes in and out puncture hole 803 smoothly, and then be favorable to convenient operation and maintenance.

If the arrangement is not so, when the fixed stabs 9 pass in and out of the puncture holes 803, seabed silt easily enters the fixed cavity 801 from the puncture holes 803, so that the fixed cavity 801 is filled, the movement of the fixed stabs 9 passing in and out of the puncture holes 803 is limited, the fixed stabs 9 cannot pass in and out of the puncture holes 803 smoothly, the operation is hindered, and the silt in the fixed cavity 801 is not convenient to clean.

Unexpectedly, by enabling the first baffle plate 21 and the second baffle plate 22 to be in vertical sliding fit with the sliding groove 804 in the wall of the fixed cavity 801, pushing the first baffle plate 21 by the first elastic piece 23, and pushing the second baffle plate 22 by the second elastic piece 24, when the fixed thorn 9 passes in and out of the puncture hole 803, the first baffle plate 21 and the second baffle plate 22 are driven to move together, so that the fixed thorn 9, the first baffle plate 21 and the second baffle plate 22 are linked, and the first baffle plate 21 and the second baffle plate 22 do not need to be removed independently to expose the puncture hole 803, which is beneficial to simplifying operation and improving efficiency.

Example 4: in this embodiment 4, on the basis of embodiment 1, a further improvement is made: as shown in fig. 24 to 27, the center rod 10 has a central cavity 1001 therein, the fixing rod 8 has a first fixing hole 805 at a lower end thereof and a plurality of second fixing holes 806 distributed around the first fixing hole 805, the first fixing hole 805 communicates with the central cavity 1001, upper ends of the second fixing holes 806 communicate with the fixing cavity 801, and lower ends of the second fixing holes 806 communicate with the first fixing holes 805. A piston rod 27 is installed in the sleeve 11 to be capable of extending into the central chamber 1001, and a piston 28 is installed at a lower end of the piston rod 27.

When the protective housing 2 is mounted, the following operations may be performed: the fixing rods 8 at the lower ends of the individual protection shells 2 are inserted into the sediment on the sea floor along the extending direction of the submarine cable 1 until the protection shells 2 fall on the surface of the sediment on the sea floor, and at this time, the submarine cable 1 can be covered by the individual protection shells 2 to be protected by the protection shells 2. In the process that the fixing rod 8 is gradually inserted into the sediment on the sea bottom, the sediment on the sea bottom can enter from the lower end of the first fixing hole 805, and along with the fixing rod 8 going deep into the sediment on the sea bottom, the sediment on the sea bottom can continuously enter the central cavity 1001 from the first fixing hole 805 and upwards push the piston 28, the piston 28 upwards pushes the piston rod 27, the piston rod 27 upwards pushes the sleeve 11, the sleeve 11 drives the fixing thorn 9 to move upwards, the fixing thorn 9 gradually extends out of the puncture hole 803 into the sediment on the sea bottom under the limiting guide of the guide column 12, and the protection shell 2 can be installed. In addition, a part of the sediment on the sea bottom enters the second fixing hole 806 from the first fixing hole 805.

Through the above process, since the sediment on the sea floor can enter the first fixing hole 805, the central cavity 1001 and the second fixing hole 806, the contact area between the fixing rod 8 and the sediment on the sea floor can be increased, the resistance for pulling out the fixing rod 8 is further increased, the stability of the protection housing 2 is further improved, and the fixing effect on the submarine cable 1 is further improved.

Unexpectedly, the central cavity 1001, the first fixing hole 805, the second fixing hole 806, the piston 28 and the piston rod 27 are arranged, so that when the protective shell 2 is installed, a worker does not need to perform additional operation on the fixing rod 8 at the lower end of the protective shell 2, the sleeve 11 inside the fixing rod 8 can move upwards through thrust transmission of the piston 28 and the piston rod 27 in sequence under the pushing of seabed sediment, and then the fixing pricks 9 extend out of the puncture holes 803 in the fixing rod 8, so that the fixing is realized, the operation is simplified, the construction difficulty is reduced, and the construction efficiency is improved.

In addition, when cleaning and replacing the fixing device, it is necessary to clean the sand in the center cavity 1001 of the center rod 10 and the sand in the fixing cavity 801 of the fixing rod 8. Silt in the central cavity 1001 mainly enters the central cavity 1001 from the first fixing hole 805, so when the silt in the central cavity 1001 is cleaned, the sleeve 11 is directly pushed downwards, the piston rod 27 is pushed downwards by the sleeve 11, the piston 28 is pushed downwards by the piston rod 27, and the silt in the central cavity 1001 can be discharged from the lower end of the first fixing hole 805 by pushing the silt downwards by the piston 28. Silt in the fixed cavity 801 mainly enters the fixed cavity 801 from the puncture 803, and in addition, silt can also enter the fixed cavity 801 from the gaps between the first baffle 21 and the second baffle 22 and the fixed thorns 9, and for the silt entering the fixed cavity 801, the silt can fall from the second fixed holes 806 to the first fixed holes 805 under the action of self gravity and then is discharged from the lower ends of the first fixed holes 805, so that the silt in the fixed cavity 801 of the fixed rod 8 is cleaned, the silt is prevented from accumulating in the fixed cavity 801 to prevent the fixed thorns 9 from entering and exiting from the puncture 803, and the maintenance of the fixed cavity 801 is facilitated.

Unexpectedly, the arrangement of the central cavity 1001, the first fixing hole 805, the second fixing hole 806, the piston 28 and the piston rod 27 can also dredge the blocked second fixing hole 806, so as to further improve the maintenance effect on the fixing cavity 801 in the fixing rod 8 and ensure the use reliability of the fixing device. Specifically, when the clogged second fixing hole 806 is to be unclogged, the following operations are required: firstly, a worker blocks the lower end of the first fixing hole 805, then pulls the sleeve 11 upwards, moves the piston 28 upwards, so that negative pressure occurs in the first fixing hole 805 and the lower part of the central cavity 1001, so as to attract silt in the second fixing hole 806 into the first fixing hole 805 and the lower part of the central cavity 1001, then loosens the blocking of the lower end of the first fixing hole 805, and pushes the piston 28 downwards, so that the silt can be discharged from the lower end of the first fixing hole 805, and the process can realize dredging of the second fixing hole 806.

When the central cavity 1001, the first fixing hole 805, the second fixing hole 806, the piston 28 and the piston rod 27 are applied to the embodiment 2, since the push-pull assembly is provided in the embodiment 2, the position of the piston 28 is affected by the push-pull assembly, when the sleeve 11 is pulled up by the push-pull assembly, the sleeve 11 will drive the piston rod 27 and the piston 28 to move up, and when the sleeve 11 is pushed down by the push-pull assembly, the sleeve 11 will drive the piston rod 27 and the piston 28 to move down.

On this basis, when the protection case 2 is mounted, the following operations are required: (1) The fixing rods 8 at the lower ends of the individual protective casings 2 are inserted into the sediment in the seabed along the extending direction of the submarine cables 1 until the protective casings 2 fall on the surface of the sediment in the seabed, and at this time, the submarine cables 1 can be covered by the individual protective casings 2 to be protected by the protective casings 2. At this point, sediment from the sea floor will enter the first fixing hole 805 and the central cavity 1001 below the piston 28, the sediment from the sea floor will be blocked by the piston 28, and the piston 28 will be controlled by the push-pull assembly so that the sediment from the sea floor will not push the piston 28 upwards, and the fixing stinger 9 will not protrude from the puncture hole 803 at this point. (2) The cover plate 5 is opened, the inner cavity of the protective shell 2 is exposed, the push-pull assembly is started to pull the sleeve 11 upwards, the sleeve 11 drives the piston 28 and the piston rod 27 to move upwards, negative pressure is generated below the piston 28 in the central cavity 1001, seabed silt moves upwards in the central cavity 1001, the contact area between the fixing rod 8 and the seabed silt is increased, the pulling resistance of the fixing rod 8 is increased, the stability is improved, the sleeve 11 moves upwards and can drive the fixing thorn 9 to stretch out of the seabed silt from the puncture hole 803, and fixing operation is completed.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (8)

1. The utility model provides a submarine cable fixing device, connects in the protection shield of protection casing both sides upper end including protection casing and rotation, and the protection shield passes through the elastic component to be connected with the lateral wall of protection casing, its characterized in that, the upper end of protection casing can be dismantled and is connected with the apron, and the lower extreme of protection casing is equipped with the dead lever, and the inside of dead lever is equipped with fixed chamber, and the chamber wall in fixed chamber is equipped with the puncture hole, and the inside in fixed chamber is equipped with a plurality of fixed thorns, and fixed thorn passes through actuating mechanism business turn over puncture hole.

2. The submarine cable fixing device according to claim 1, wherein the driving mechanism includes a central rod, a sleeve, and a guide seat, the central rod is vertically disposed in the fixing cavity, the sleeve is sleeved on the central rod, the sleeve is vertically slidably connected to the central rod, the sleeve is rotatably connected to the fixing barb, the guide seat for guiding the fixing barb to enter and exit from the puncture hole is disposed on the cavity wall of the fixing cavity, the upper end of the fixing rod is provided with a movable hole, and the upper end of the sleeve extends out of the movable hole to the inside of the protection casing.

3. The submarine cable fixing device according to claim 2, wherein the driving mechanism further comprises a push-pull assembly for pushing and pulling the sleeve up and down, the push-pull assembly is disposed inside the protective casing, the push-pull assembly comprises a base, a driver, a crank and a connecting rod, the base is disposed inside the protective casing, the driver for driving the crank to rotate is disposed on the base, the crank is rotatably connected to the connecting rod at an end away from the driver, and the connecting rod is rotatably connected to the upper end of the sleeve at an end away from the crank.

4. A submarine cable fixing device according to claim 3, wherein the driver comprises a waterproof motor, the waterproof motor being provided on the base, the output shaft of the waterproof motor being provided with the crank.

5. The submarine cable fixing device according to claim 3, wherein the driver comprises a rotating shaft and a positioning screw, the base is provided with a rotating hole for rotatably engaging with the rotating shaft and a positioning screw hole for communicating with the rotating hole, the rotating shaft is provided with a plurality of insertion holes in the circumferential direction, the positioning screw is engaged with the positioning screw hole and the insertion holes in sequence, and the end of the rotating shaft is provided with the crank.

6. A submarine cable fixing device according to claim 5, wherein the positioning screw is connected to the base at an end remote from the rotation shaft by a connecting string.

7. The submarine cable fixing device according to claim 2, wherein the wall of the fixing cavity is provided with a first baffle and a second baffle for blocking the puncture hole, the first baffle and the second baffle are vertically and slidably connected with the wall of the fixing cavity, the upper end of the first baffle is connected with the wall of the fixing cavity through a first elastic member, the lower end of the first baffle abuts against the fixing thorn, the lower end of the second baffle is connected with the wall of the fixing cavity through a second elastic member, and the upper end of the second baffle abuts against the fixing thorn.

8. A submarine cable fixing device according to claim 2, wherein the central rod has a central cavity therein, the fixing rod has a first fixing hole at its lower end and a plurality of second fixing holes distributed around the first fixing hole, the first fixing hole communicating with the central cavity, the second fixing hole having an upper end communicating with the fixing cavity and a lower end communicating with the first fixing hole, the sleeve has a piston rod extending into the central cavity therein, and the piston rod has a piston at its lower end.

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