CN115833021B - 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 in the fixing rod, puncture holes are formed in the cavity wall of the fixing cavity, and a plurality of fixing thorns are arranged in the fixing cavity and pass in and out of the puncture holes 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 refers to a cable laid on the sea floor and used for telecommunication transmission. Under the influence of offshore traffic, the submarine cable is often pulled by hooking of the ship anchor, so that the submarine cable is damaged.

In contrast, in chinese patent application number CN 202111162021. X, there is disclosed an anchor prevention device for submarine cable with protection plate and working method thereof, as shown in fig. 1, the device comprises a protection housing 2 and protection plates 3 rotatably connected to upper ends of both sides of the protection housing 2, the protection plates 3 are connected to outer side walls of the protection housing 2 through elastic members 4. When the ship anchor falls onto 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 slowly moves forward, the protection plate 3 is pulled by the ship anchor to turn upwards, so that the ship anchor passes over the protection plate 3 and leaves the protection part, and hooking damage of the ship anchor to the submarine cable 1 is avoided.

However, the anchors are heavy and even if the submarine cable cannot be hooked up due to the protection of the device, the device is pushed during the movement of the anchors, which in turn pushes the submarine cable protected by the device. Therefore, there is also a need to improve the fixing effect on the submarine cable.

Disclosure of Invention

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

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

the utility model provides a submarine cable fixing device, includes the protection casing and rotates the protection shield of connecting in protection casing both sides upper end, and the protection shield passes through the elastic component and is 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 thorns, and fixed thorns pass through actuating mechanism business turn over puncture hole.

Further, actuating mechanism includes center pole, sleeve, guide holder, the vertical center pole that is equipped with in the fixed intracavity, the sleeve cover is established on the center pole, sleeve and the vertical sliding connection of center pole, sleeve rotate be connected with fixed thorn, the chamber wall in fixed chamber is equipped with and is used for guiding fixed thorn follow the guide holder of puncture hole business turn over, the upper end of fixed pole is equipped with the movable hole, telescopic upper end stretches out from the movable hole to the inside of protective housing.

Further, actuating mechanism still includes and is used for pushing and pulling from top to bottom telescopic push-and-pull subassembly, push-and-pull subassembly is located the inside of protection casing, push-and-pull subassembly includes base, driver, crank, connecting rod, and the inside of protection casing is equipped with the base, is equipped with on the base and is used for driving crank pivoted driver, and the crank is in keeping away from the one end of driver and connecting rod rotation connection, and the connecting rod is in keeping away from the one end of crank and telescopic upper end rotation connection.

Further, 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 be equipped with be used for with pivot normal running fit's rotation hole and be used for with the location screw of rotation hole intercommunication, the circumference of pivot is equipped with a plurality of jacks, positioning screw cooperates with location screw, jack in proper order, the tip of pivot is equipped with the crank.

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

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

Further, the inside of center pole is equipped with the center chamber, the lower extreme of dead lever is equipped with first fixed orifices and a plurality of second fixed orifices that encircle first fixed orifices and distribute, first fixed orifices and center chamber intercommunication, the upper end of second fixed orifices with the fixed chamber intercommunication, the lower extreme and the first fixed orifices intercommunication of second fixed orifices, be equipped with the piston rod that stretches into the inside of center chamber in the sleeve, 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 puncture 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 puncture can improve the resistance of the protection shell, the stability of the protection shell on the seabed is improved, so that 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 thorns do not extend out of the inside of the fixing rods, the resistance of the fixing rods to insertion of the seabed sediment can be reduced, so that the protection shell is convenient to install, and the installation efficiency is improved.

3. In the fixing device, the cover plate is arranged, so that on one hand, when the cover plate is opened, the sleeve can be operated to realize the adjustment of the fixed thorns entering and exiting the inside of the fixing rod; on the other hand, when the submarine cable is overhauled, the submarine cable can be overhauled by opening the cover plate, and the overhaul operation is facilitated.

4. According to the fixing device, the push-pull assembly is arranged, so that the state that the fixed thorns extend out of the puncture holes is not stabilized by only relying on friction resistance between seabed sediment and the fixed thorns, and the push-pull assembly can be used for further stabilizing the state of the fixed thorns.

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 rod, and is of a pure mechanical structure although manpower is used, so that the driver is more convenient to overhaul and maintain.

6. In the fixing device, in the process of fixing the puncture hole, the fixing puncture can swing up and down by a certain amplitude in the puncture hole, when the fixing puncture swings, the first baffle is always abutted against the upper surface of the fixing puncture 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 puncture under the pushing of the elastic force of the second elastic piece, so that in the process of fixing the puncture hole, both the first baffle and the second baffle can always shield the puncture hole, thereby helping to prevent sediment on the seabed from entering the fixing cavity of the fixing rod from the puncture hole, further being beneficial to guaranteeing that the fixing puncture smoothly enters and exits the puncture hole, and being beneficial to convenient operation and maintenance.

7. Unexpectedly, through letting first baffle and second baffle all with fixed chamber wall vertical sliding fit, and let first baffle receive the promotion of first elastic component, let the second baffle receive the promotion of second elastic component, can drive first baffle and second baffle and remove together when fixed puncture hole, realized the linkage of fixed puncture and first baffle and second baffle to need not to remove alone first baffle and second baffle and expose the puncture hole, be favorable to simplifying the operation, improve efficiency.

8. Because seabed sediment can get into first fixed orifices, central chamber, second fixed orifices, so can increase the area of contact of dead lever and seabed sediment, further increase the resistance of pulling out the dead lever, be favorable to further improving the stability of protective housing, be favorable to further improving the fixed effect to submarine cable.

9. Unexpectedly, the setting of center chamber, first fixed orifices, second fixed orifices, piston rod can be when installing the protection casing, need not the workman and carry out extra 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, and then stretches out the puncture hole on the dead lever with fixed thorn, realizes fixing, is favorable to simplifying the operation, reduces the construction degree of difficulty, improves the efficiency of construction.

10. When the replaced fixing device is cleaned, sediment in the central cavity of the central rod and sediment in the fixing cavity of the fixing rod need to be cleaned. For the sediment in the central cavity, the sleeve is directly pushed down, the piston rod is pushed down by the sleeve, the piston rod is pushed down by the piston, and the sediment in the central cavity can be discharged from the lower end of the first fixing hole by the piston pushing down the sediment. To getting into the silt of fixed intracavity, silt can fall to first fixed orifices from the second fixed orifices under self gravity effect, discharges from the lower extreme of first fixed orifices again, has realized the clearance to the fixed intracavity silt of dead lever, is favorable to avoiding silt to pile up in fixed intracavity to hinder the business turn over of fixed thorn from puncture hole department, makes things convenient for the maintenance of 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 dredge the blocked second fixing hole, so that the maintenance effect on the fixing cavity in the fixing rod is further improved, and the use reliability of the fixing device is guaranteed. Specifically, when dredging the second fixed orifices that blocks up, the workman blocks up the lower extreme of first fixed orifices, then upwards pulls the sleeve, moves the piston upwards for negative pressure appears in the lower part in first fixed orifices and the center chamber, in order to attract the silt in the second fixed orifices to the lower part in first fixed orifices and the center chamber, later unclamp the shutoff to first fixed orifices lower extreme again, and promote the piston downwards, just can discharge silt from the lower extreme of first fixed orifices, and above-mentioned process just can realize the mediation to the second fixed orifices.

Drawings

FIG. 1 is a schematic diagram of a structure of the background art;

fig. 2 is a perspective view of the submarine cable fixing apparatus of example 1 with the cover removed;

fig. 3 is a perspective view of the submarine cable fixing device of embodiment 1;

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

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

FIG. 6 is an assembled perspective view of the fixing rod, fixing thorn, center rod, sleeve, guide seat of example 1;

FIG. 7 is an assembled front view of the fixing rod, fixing thorn, center rod, sleeve, guide seat of embodiment 1;

FIG. 8 is an assembled perspective view of the fixing rod, fixing thorn, center rod, sleeve and guide base of example 1;

FIG. 9 is an assembled top view of the mounting bar, mounting thorn, center bar, sleeve, guide seat of example 1;

FIG. 10 is 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 a submarine cable fixing apparatus according to embodiment 2 using a first type of driver with a cover plate removed;

fig. 13 is a schematic diagram showing the use of the submarine cable fixing apparatus using the first type of actuator according to embodiment 2;

fig. 14 is a second schematic view of the use of the submarine cable fixing device according to embodiment 2 using the first actuator;

fig. 15 is a perspective view of a submarine cable fixing apparatus using a second type of actuator according to embodiment 2;

FIG. 16 is a schematic diagram showing the cooperation of the base, the shaft and the positioning screw in embodiment 2;

FIG. 17 is an assembled perspective view of the fixing rod, fixing thorn, center rod, sleeve, guide seat of example 3;

FIG. 18 is an assembled perspective view of the fixing rod, fixing thorn, center rod, sleeve and guide base of example 3;

FIG. 19 is an assembled top view of the mounting bar, mounting thorn, center bar, sleeve, guide seat of example 3;

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

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

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

FIG. 23 is a partial enlarged view of the portion D in FIG. 22

FIG. 24 is a schematic view showing the assembly of a fixing rod, fixing thorn, center rod, sleeve, and guide seat according to embodiment 4;

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

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

fig. 27 is a schematic view showing a partial structure of a fixing rod, a center rod, and a sleeve in embodiment 4.

In the figure:

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

5-cover plate, 6-supporting seat, 7-fastener, 8-fixing rod, 801-fixing cavity, 802-movable hole, 803-piercing hole, 804-sliding groove, 805-first fixing hole, 806-second fixing hole, 9-fixing thorn, 10-center rod, 1001-center cavity, 11-sleeve, 12-guiding post,

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

21-first baffle, 22-second baffle, 23-first elastic member, 24-second elastic member, 25-first support, 26-second support,

27-piston rod, 28-piston.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.

Example 1: as shown in fig. 2-5, the submarine cable fixing device comprises a protection shell 2 and protection plates 3, wherein the protection plates 3 are arranged on the left side and the right side of the protection shell 2, the upper ends of the protection plates 3 are rotationally connected with the upper ends of the protection shell 2, the protection plates 3 are connected with the outer side walls of the protection shell 2 through elastic pieces 4, and the elastic pieces 4 adopt tension springs.

As shown in fig. 2-3, the upper end of the protective housing 2 is detachably connected with a cover plate 5, and this embodiment provides a detachable connection manner: a supporting seat 6 is arranged at the upper end of the inside of the protective shell 2, a cover plate 5 is placed on the supporting seat 6, and the cover plate 5 is arranged at the upper end of the protective shell 2 through a fastener 7 such as a screw, a bolt and the like. After the fastener 7 is removed, the cover plate 5 is removed, and the inside of the protective case 2 can be opened.

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

As shown in fig. 2-11, the drive mechanism comprises a central rod 10, a sleeve 11, a guide seat. The fixed cavity 801 is located to the center pole 10, and the bottom of the cavity of fixed cavity 801 is installed to the lower extreme of center pole 10, and sleeve 11 cover is established on center pole 10, and sleeve 11 and the vertical sliding fit of center pole 10, and the inside that just sleeve 11's upper end can stretch out protective housing 2 from movable hole 802, rotates on sleeve 11 to be connected with fixed thorn 9, and the guide seat that is used for guiding fixed thorn 9 to pass in and out from puncture 803 is installed to the cavity wall of fixed cavity 801, and in this embodiment, the guide seat includes guide post 12, and guide post 12 is located the top of fixed thorn 9.

When the protective housing 2 is installed, the following steps are performed: (1) Along the extending direction of the submarine cable 1, the fixing rods 8 at the lower ends of the individual protecting shells 2 are inserted into the sediment on the seabed until the protecting shells 2 fall on the surface of the sediment on the seabed, at which time the submarine cable 1 can be covered by the individual protecting shells 2, and the protecting shells 2 are protected, at which time the fixing thorns 9 do not extend from the puncture holes 803, see fig. 4. (2) The cover plate 5 is opened, the inner cavity of the protective casing 2 is exposed, the sleeve 11 is pulled upwards, the sleeve 11 moves upwards along the central rod 10, the fixed thorn 9 on the sleeve 11 also moves upwards gradually, the fixed thorn 9 extends out of the puncture hole 803 into sediment on the seabed gradually under the limit guidance of the guide column 12, the fixed thorn 9 can keep a state of extending out of the puncture hole 803 under the action of friction resistance between sediment on the seabed and the surface of the fixed thorn 9, and the protective casing 2 can be installed, see fig. 5.

When the protection shell 2 is installed, the fixing rod 8 and the fixing thorn 9 can be firmly pricked into the seabed sediment, when the protection shell 2 is pushed by external force, the fixing rod 8 and the fixing thorn 9 can improve the resistance capacity for 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 on the submarine cable 1 is improved.

And when fixed thorn 9 does not extend from the inside of dead lever 8, can reduce the resistance that dead lever 8 inserted seabed silt to the protection casing 2 is convenient to install, 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 can be operated, and the adjustment of the fixed thorn 9 entering and exiting the inside of the fixed rod 8 can be realized; on the other hand, when the submarine cable 1 is overhauled, the cover plate 5 is opened to overhaule the submarine cable 1, so that the overhaul operation is facilitated.

Example 2: this example 2 is a further improvement over example 1: as shown in fig. 12-16, the drive mechanism further comprises a push-pull assembly for pushing and pulling the sleeve 11 up and down, the push-pull assembly being provided inside the protective housing 2.

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

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 fixing thorns 9 protrude from the puncture 803, see fig. 14. When the fixing thorn 9 protrudes from the puncture 803, the driver is stopped, and the state in which the fixing thorn 9 protrudes from the puncture 803 can be maintained. As the sleeve 11 moves down, the fixation spike 9 is retracted from the puncture 803 into the fixation cavity 801, see fig. 13.

The present embodiment gives two structural forms of the driver:

as shown in fig. 12 to 14, the first type of 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 through the linkage of the connecting rod 15.

As shown in fig. 15 to 16, the second driver comprises a rotary shaft 17 and a positioning screw 18, wherein the base 13 is provided with a rotary hole 1301 for being in rotary fit with the rotary shaft 17 and a positioning screw hole 1302 for being communicated with the rotary hole 1301, a plurality of insertion holes 1701 are formed in the circumferential direction of the rotary 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 part of the rotary 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. The second driver uses manpower, but is of a pure mechanical structure, so that the second driver is more convenient to overhaul and maintain.

As shown in fig. 15 to 16, for the second type of driver, in order to avoid the loss of the positioning screw 18 after the positioning screw 18 is detached when the positioning screw 18 is screwed, a connecting rope 19 is tied to the end of the positioning screw 18 away from the rotating shaft 17, and the connecting rope 19 is tied to the base 13 at the end away from the positioning screw 18. When the positioning screw 18 is screwed out, the positioning screw 18 is not 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 facilitate rotation of the spindle 17, a handle 20 is mounted at an end of the spindle 17 remote from the crank 14.

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

Example 3: this example 3 is a further improvement over example 1 or example 2: as shown in fig. 18, 20-23, a first baffle 21 and a second baffle 22 for shielding the puncture 803 are arranged on the cavity wall of the fixed cavity 801, and the first baffle 21 and the second baffle 22 are respectively provided with a convex part (not shown in the figures) for vertically sliding fit with a sliding groove 804 arranged on the cavity wall of the fixed cavity 801.

As shown in fig. 18 and 20-23, the first baffle 21 is located above the fixed thorn 9, the upper end of the first baffle 21 is connected with the first support 25 installed on the cavity wall of the fixed cavity 801 through the first elastic member 23, the first elastic member 23 can adopt a spring, and the lower end of the first baffle 21 is abutted against the fixed thorn 9.

As shown in fig. 18, 20-23, the second baffle 22 is located below the fixing thorn 9, the lower end of the second baffle 22 is connected with a second support 26 installed on the cavity wall of the fixing cavity 801 through a second elastic member 24, the second elastic member 24 can also adopt a spring, and the upper end of the second baffle 22 is abutted against the fixing thorn 9.

In the process of the fixed thorn 9 entering and exiting the puncture 803, the fixed thorn 9 can swing up and down with a certain amplitude in the puncture 803, when the fixed thorn 9 swings, the first baffle 21 always props against the upper surface of the fixed thorn 9 under the pushing of the elastic force of the first elastic piece 23, and the second baffle 22 always props against the lower surface of the fixed thorn 9 under the pushing of the elastic force of the second elastic piece 24, so that the first baffle 21 and the second baffle 22 can always shield the puncture 803 in the process of the fixed thorn 9 entering and exiting the puncture 803, thereby helping to prevent seabed sediment from entering the fixed cavity 801 of the fixed rod 8 from the puncture 803, further being beneficial to guaranteeing the smooth entering and exiting of the fixed thorn 9 into the puncture 803, and further being beneficial to convenient operation and maintenance.

If not so arranged, when the fixed thorn 9 enters and exits the puncture 803, sediment on the seabed easily enters the fixed cavity 801 from the puncture 803, so that the fixed cavity 801 is filled, the action of the fixed thorn 9 entering and exits the puncture 803 is limited, the fixed thorn 9 cannot smoothly enter and exit the puncture 803, the operation is hindered, and the sediment in the fixed cavity 801 is inconvenient to clean.

Unexpectedly, by enabling the first baffle 21 and the second baffle 22 to be vertically matched with the sliding groove 804 on the cavity wall of the fixing cavity 801 in a sliding manner, enabling the first baffle 21 to be pushed by the first elastic piece 23 and the second baffle 22 to be pushed by the second elastic piece 24, when the fixing thorn 9 enters and exits the puncture hole 803, the first baffle 21 and the second baffle 22 are driven to move together, linkage of the fixing thorn 9 and the first baffle 21 and the second baffle 22 is achieved, and therefore the first baffle 21 and the second baffle 22 do not need to be independently moved to expose the puncture hole 803, operation is facilitated to be simplified, and efficiency is improved.

Example 4: this example 4 is a further improvement over example 1: as shown in fig. 24 to 27, the center rod 10 is provided with a central cavity 1001 inside, a first fixing hole 805 and a plurality of second fixing holes 806 distributed around the first fixing hole 805 are provided at the lower end of the fixing rod 8, the first fixing hole 805 communicates with the central cavity 1001, the upper end of the second fixing hole 806 communicates with the fixing cavity 801, and the lower end of the second fixing hole 806 communicates with the first fixing hole 805. A piston rod 27 is installed in the sleeve 11 so as to extend into the central chamber 1001, and a piston 28 is installed at the lower end of the piston rod 27.

When the protective case 2 is installed, the following operations may be performed: along the extending direction of the submarine cable 1, the fixing rods 8 at the lower ends of the individual protecting shells 2 are inserted into the submarine sediment until the protecting shells 2 fall on the surface of the submarine sediment, and at this time, the submarine cable 1 can be covered by the individual protecting shells 2, so that the protecting shells 2 are protected. In the process that the fixing rod 8 is gradually inserted into the seabed sediment, the seabed sediment can enter from the lower end of the first fixing hole 805, and as the fixing rod 8 goes deep into the seabed sediment, the seabed sediment can continuously enter into the central cavity 1001 from the first fixing hole 805, the piston 28 is pushed upwards to push the piston rod 27, the piston rod 27 is pushed upwards to push the sleeve 11, the sleeve 11 drives the fixing thorns 9 to move upwards, and the fixing thorns 9 gradually extend into the seabed sediment from the puncture holes 803 under the limit guidance of the guide posts 12, so that the installation of the protection shell 2 can be completed. In addition, some of the seabed sediment may also enter the second securing holes 806 from the first securing holes 805.

According to the above process, because the seabed sediment 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 seabed sediment can be increased, the resistance of pulling out the fixing rod 8 is further increased, the stability of the protection shell 2 is further improved, and the fixing effect of the submarine cable 1 is further improved.

Unexpectedly, the central cavity 1001, the first fixed hole 805, the second fixed hole 806, the piston 28 and the piston rod 27 are arranged, so that when the protection shell 2 is installed, no additional operation is needed for the fixing rod 8 at the lower end of the protection shell 2 by workers, the sleeve 11 inside the fixing rod 8 can move upwards through the thrust transmission of the piston 28 and the piston rod 27 in sequence under the pushing of sediment on the seabed, and then the fixing thorn 9 extends out of the puncture hole 803 on the fixing rod 8, thereby realizing fixation, being beneficial to simplifying operation, reducing construction difficulty and improving construction efficiency.

In addition, when cleaning the replaced fixing device, it is necessary to clean the sediment in the central cavity 1001 of the central rod 10 and the sediment in the fixing cavity 801 of the fixing rod 8. Sediment in the central cavity 1001 mainly enters the central cavity 1001 from the first fixing hole 805, so when sediment in the central cavity 1001 is cleaned, the sleeve 11 is directly pushed down, the sleeve 11 pushes down the piston rod 27, the piston rod 27 pushes down the piston 28, and the piston 28 pushes down sediment, so that sediment in the central cavity 1001 can be discharged from the lower end of the first fixing hole 805. Sediment in the fixed cavity 801 mainly enters the fixed cavity 801 from the puncture hole 803, and in addition, the sediment possibly enters the fixed cavity 801 from a gap between the first baffle 21 and the second baffle 22 and the fixed thorn 9, and for the sediment entering the fixed cavity 801, the sediment can fall into the first fixed hole 805 from the second fixed hole 806 under the action of self gravity and then is discharged from the lower end of the first fixed hole 805, so that the sediment in the fixed cavity 801 of the fixed rod 8 is cleaned, the sediment is prevented from being accumulated in the fixed cavity 801 to prevent the fixed thorn 9 from entering and exiting from the puncture hole 803, and the maintenance of the fixed cavity 801 is facilitated.

Unexpectedly, 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, in unblocking the blocked second fixing hole 806, the following operations are required: first, a worker blocks the lower end of the first fixing hole 805, pulls the sleeve 11 upward, moves the piston 28 upward, and makes the lower parts in the first fixing hole 805 and the central chamber 1001 have negative pressure so as to attract the sediment in the second fixing hole 806 into the lower parts of the first fixing hole 805 and the central chamber 1001, then releases the blocking of the lower end of the first fixing hole 805, pushes the piston 28 downward, and discharges the sediment from the lower end of the first fixing hole 805.

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, the sleeve 11 drives the piston rod 27 and the piston 28 to move upward when the push-pull assembly pulls up the sleeve 11, and the sleeve 11 drives the piston rod 27 and the piston 28 to move downward when the push-pull assembly pushes down the sleeve 11.

On this basis, when the protective case 2 is mounted, the following operations are required: (1) Along the extending direction of the submarine cable 1, the fixing rods 8 at the lower ends of the individual protecting shells 2 are inserted into the sediment on the seabed until the protecting shells 2 fall on the surface of the sediment on the seabed, and at this time, the submarine cable 1 can be covered by the individual protecting shells 2, so that the protecting shells 2 are protected. At this time, the seabed sediment enters the first fixing hole 805 and the central cavity 1001 below the piston 28, the seabed sediment is blocked by the piston 28, and the piston 28 is controlled by the push-pull assembly, so that the seabed sediment does not push the piston 28 to move upwards, and the fixing thorn 9 cannot protrude from the puncture hole 803 at this time. (2) The cover plate 5 is opened, the inner cavity of the protection 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, so that seabed sediment moves upwards in the central cavity 1001, the contact area between the fixing rod 8 and the seabed sediment is increased, the pull-out resistance of the fixing rod 8 is increased, the stability is improved, and the sleeve 11 moves upwards to drive the fixing thorn 9 to extend out of the seabed sediment from the puncture 803, so that the fixing operation is completed.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (6)

1. The submarine cable fixing device 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 walls of the protection shell through elastic pieces;

the driving mechanism comprises a center rod, a sleeve and a guide seat, wherein the center rod is vertically arranged in the fixing cavity, the sleeve is sleeved on the center rod, the sleeve is vertically and slidably connected with the center rod, the sleeve is rotationally connected with a fixing thorn, the cavity wall of the fixing cavity is provided with the guide seat for guiding the fixing thorn to enter and exit from the puncture hole, the upper end of the fixing rod is provided with a movable hole, and the upper end of the sleeve extends out of the protection shell from the movable hole;

the inside of well core pole is equipped with the center chamber, and the lower extreme of dead lever is equipped with first fixed orifices and a plurality of second fixed orifices that encircle first fixed orifices and distribute, and first fixed orifices and center chamber intercommunication, the upper end and the fixed chamber intercommunication of second fixed orifices, the lower extreme and the first fixed orifices intercommunication of second fixed orifices are equipped with the piston rod that stretches into the inside of center chamber in the sleeve, and the lower extreme of piston rod is equipped with the piston.

2. The submarine cable fixing device according to claim 1, wherein the driving mechanism further comprises a push-pull assembly for pushing and pulling the sleeve up and down, the push-pull assembly is arranged in the protective shell and comprises a base, a driver, a crank and a connecting rod, the base is arranged in the protective shell, the driver for driving the crank to rotate is arranged on the base, the crank is rotatably connected with the connecting rod at one end far away from the driver, and the connecting rod is rotatably connected with the upper end of the sleeve at one end far away from the crank.

3. A submarine cable fixing device according to claim 2, wherein the driver comprises a waterproof motor arranged on the base, and the crank is arranged on an output shaft of the waterproof motor.

4. A submarine cable fixing device according to claim 2, wherein the driver comprises a rotating shaft and a positioning screw, the base is provided with a rotating hole for being in rotating fit with the rotating shaft and a positioning screw hole for being communicated with the rotating hole, a plurality of insertion holes are formed in the circumferential direction of the rotating shaft, the positioning screw is sequentially matched with the positioning screw hole and the insertion holes, and the crank is arranged at the end part of the rotating shaft.

5. A submarine cable fixing device according to claim 4, wherein the locating screw is connected to the base via a connecting rope at an end remote from the shaft.

6. The submarine cable fixing device according to claim 1, wherein the cavity wall of the fixing cavity is provided with a first baffle plate and a second baffle plate for shielding the puncture hole, the first baffle plate and the second baffle plate are vertically and slidably connected with the cavity wall of the fixing cavity, the upper end of the first baffle plate is connected with the cavity wall of the fixing cavity through a first elastic piece, the lower end of the first baffle plate is in butt joint with the fixing puncture, the lower end of the second baffle plate is connected with the cavity wall of the fixing cavity through a second elastic piece, and the upper end of the second baffle plate is in butt joint with the fixing puncture.

Images