An underwater installation device and method based on submarine cable laying

Abstract

The present invention relates to the technical field of submarine cable laying, specifically to an underwater installation device and method based on submarine cable laying, comprising an underwater robot, an installation mechanism, and an adjustment mechanism; the underwater robot is provided with an auxiliary mechanism for guiding the cable to move toward the groove and assist in loading; the installation mechanism can automatically groove and bury the cable when driven by the underwater robot; the adjustment mechanism is provided on the underwater robot and is used to drive the installation mechanism to be stored on the underwater robot or to be expanded to perform trench excavation at different depths. The present invention can drive the cable to different depths within the seabed mud and sand, making it easy to bury the cable while laying it, thereby completing the installation, avoiding the traditional method of covering the trench due to water flow disturbance before the cable is laid, improving installation efficiency, and facilitating storage and saving space through the provision of the adjustment mechanism.

Description

Technical Field

[0001] The present invention belongs to the technical field of submarine cable laying, and in particular relates to an underwater installation device and method based on submarine cable laying. Background Art

[0002] Submarine cables are cables wrapped in insulating material and laid on the seabed for telecommunications transmission. To lay a submarine cable on the seabed, trenches are first cut into the seabed, and the cables are then buried in the trenches. The cables are then covered with sand for protection.

[0003] Chinese patent publication number CN115733095A discloses an underwater installation device for submarine cable laying. The device includes an underwater robot, a mounting block, a monitoring mechanism, a slotting mechanism, a leveling block, an auxiliary mechanism, and a covering mechanism. The detection mechanism detects bending deformation of the cable within a first perforation. One end of the leveling block is fixed to the top of the mounting block, and the auxiliary mechanism provides an inclined guide for the cable extending rearward from the first perforation. This patent allows for the creation of cable troughs of varying depths as needed, followed by complete coverage with sediment. Furthermore, the device monitors bending changes during cable laying, preventing damage and improving cable laying quality.

[0004] However, the above-mentioned disclosed solution has the following shortcomings: after the two sets of rotating plates move to open the grooves under the drive of the underwater robot, as the underwater robot drives the horizontal block to continue to move, it will drive the water flow around the grooves, and then drive the soil near the grooves to automatically bury the grooves to a certain extent, interfering with the laying of cables, and when this device is not in use, the horizontal blocks cannot be stored and space cannot be saved. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide an underwater installation device and method based on submarine cable laying to solve the problem in the prior art that the horizontal block easily drives the water flow around the slot, thereby driving the soil to bury the slot to a certain extent, interfering with the cable laying.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An underwater installation device for submarine cable laying includes an underwater robot 1. A support frame 403 is provided at the rear end of the underwater robot 1. Two fixed pulleys 404 are provided on the support frame 403. A pull rope 402 is wound around each fixed pulley 404. One end of each pull rope 402 is connected to a winding reel 401, and the other end of each pull rope 402 is connected to a guide tube 5.

[0008] Each reel 401 is mounted on a rotating rod 4, one end of the two rotating rods 4 is commonly connected to a dual-axis motor, and the outer ends of the two rotating rods 4 are rotatably connected to the underwater robot 1;

[0009] The upper end of the guide tube 5 is connected to a mounting shaft 405, which is rotatably connected to the tail end of the underwater robot 1. Each end of the mounting shaft 405 is connected to the outer end of a rotating rod 4 via a transmission assembly 406.

[0010] A through hole is provided inside the guide tube 5 along its length for the cable to pass through. A slotted plate 503 is fitted to the upper end of the outer periphery of the lower portion of the guide tube 5. A diverter tube 504 is provided along its length at the lower end of the outer periphery of the guide tube 5.

[0011] The slotted plate 503 includes a connecting plate 5032 that fits the guide tube 5. A side plate 5031 is integrally connected to each side of the connecting plate 5032. The width of each side plate 5031 gradually increases from bottom to top, and each side plate 5031 is provided with a through hole.

[0012] A plurality of high-pressure nozzles 505 are provided along the length direction of the diversion pipe 504 , and the upper end of the diversion pipe 504 is connected to the high-pressure pump through a hose.

[0013] A further improvement of the present invention is:

[0014] Preferably, the outer side edge of the side panel 5031 is arc-shaped.

[0015] Preferably, ear seats 501 are provided on both sides of the guide tube 5 , each ear seat 501 is connected to a pull rope 402 , and the ear seats 501 are provided above the slotted plate 503 .

[0016] Preferably, the outer end of each rotating rod 4 is mounted on the underwater robot 1 through a fixing block, and a limit plate is provided on the outer end of each rotating rod 4; both sides of the mounting shaft 405 pass through the underwater robot 1, and a limit plate is provided on the outer end;

[0017] The transmission assembly 406 is a chain transmission assembly.

[0018] Preferably, a guide ring 101 is provided at the tail end of the underwater robot 1 , a through hole is provided on the guide ring 101 , and the axes of the guide ring 101 and the guide tube 5 are in the same plane.

[0019] Preferably, a fixed seat 201 is installed on the underwater robot 1, a movable seat 2 is movably connected to the fixed seat 201, and a guide component is installed in the through hole formed by the fixed seat 201 and the movable seat 2.

[0020] Preferably, the guide assembly includes a lower mounting seat 3 and an upper mounting seat 304 that are relatively arranged, the lower mounting seat 3 is installed on the fixed seat 201, and the upper mounting seat 304 is installed at the lower end of the movable seat 2, and several groups of feeding rollers 301 are arranged on the lower mounting seat 3 and the upper mounting seat 304 along the length direction.

[0021] Preferably, multiple groups of adjustment rods 202 are provided between the lower mounting seat 3 and the fixed seat 201 and between the upper mounting seat 304 and the movable seat 2. Each group of adjustment rods 202 includes a telescopic rod and a spring sleeved on the outside of the telescopic rod.

[0022] Preferably, the guide assembly further comprises two auxiliary seats 302 arranged opposite to each other, which are respectively mounted on the fixed seat 201 and the movable seat 2, and the two auxiliary seats 302 are arranged on both sides of the cable.

[0023] A method for using the above-mentioned underwater installation device for submarine cable laying is as follows: a dual-axis motor drives two sets of rotating rods 4 to rotate, the rotating rods 4 drive the winding wheel 401 to rotate, and at the same time drives the installation shaft 405 to rotate through the transmission assembly 406, so that the winding wheel 401 retracts or extends the pull rope 402; the rotating rod 4 drives the installation shaft 405 to rotate through the transmission assembly 406, and the installation shaft 405 and the pull rope 402 jointly drive the guide tube 5 to rotate and adjust the angle or height, so that the guide tube 5 and the slotted plate 503 are inserted to a set depth;

[0024] The cable passes through the through hole opened in the guide tube 5, and the underwater robot 1 drives the guide tube 5 and the slotted plate 503 to move forward. The slotted plate 503 slots the mud and sand inside, and the diversion pipe 504 sprays out high-pressure water. The high-pressure water sprays out the mud and sand through multiple groups of high-pressure nozzles, opening a groove. The cable is laid in the groove, and the mud and sand above the groove cover the cable.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention discloses an underwater installation device based on submarine cable laying. The device can adjust the angle of the guide tube by arranging a rotating rod, a pulling rope and an installation shaft, so as to drive the cable to penetrate into different depths inside the seabed mud and sand. By arranging a slotting plate, the underwater robot can perform slotting while moving forward. Because the slotting plate is arranged on the guide tube and the outlet of the guide tube is at the rear of the slotting plate, the cable can be buried to a deeper depth after slotting. At the same time, because the guide tube is inserted very deeply and the slotting plate is a V-shaped structure, the mud and sand on the upper part of the cable can be buried by the cable while it is laid forward, thereby completing the installation. This avoids the traditional method of covering the groove due to water flow disturbance before the cable is laid, thereby improving installation efficiency, facilitating storage and saving space.

[0027] Furthermore, the outer side edges of the side plates are arc-shaped, which reduces the resistance of the slotted plate during its advancement and the friction during its embedding process.

[0028] Furthermore, ear seats are provided on both sides of the guide tube, which facilitate connection with a pull rope and a fixed pulley, thereby facilitating the direction adjustment of the guide tube.

[0029] Furthermore, a limit plate is provided at the outer end of the rotating rod, and a limit plate is provided at the outer end of the mounting shaft, so that the transmission component can be effectively transmitted without being separated from the rotating rod and the mounting shaft.

[0030] Furthermore, a guide ring is provided at the tail end of the underwater robot, which can guide the cable.

[0031] Furthermore, the present invention is provided with upper and lower mounting seats, and a guide assembly is provided inside to facilitate the transportation of cables and assist in feeding, thereby improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the auxiliary mechanism structure of the present invention;

[0034] Figure 3 It is a schematic structural diagram of the regulating mechanism of the present invention;

[0035] Figure 4 It is a schematic diagram of the installation mechanism structure of the present invention.

[0036] Figure numerals: 1. underwater robot; 101. guide ring; 102. connecting ring; 103. notch; 2. movable seat; 201. fixed seat; 202. adjusting rod; 3. lower mounting seat; 301. feed roller; 302. auxiliary seat; 303. guide roller; 304. upper mounting seat; 4. rotating rod; 401. winding wheel; 402. pull rope; 403. support frame; 404. fixed pulley; 405. mounting shaft; 406. transmission assembly; 5. guide tube; 501. ear seat; 502. connecting seat; 503. slotted plate; 504. diverter pipe; 505. high-pressure nozzle; 5031. side plate; 5032. connecting plate. DETAILED DESCRIPTION

[0037] The present invention is described in further detail below with reference to the accompanying drawings:

[0038] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a communication between the internal parts of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Example 1

[0040] like Figure 1 、 Figure 3 and Figure 4 As shown, the present invention proposes an underwater installation device for submarine cable laying, comprising an underwater robot 1, an installation mechanism, and an adjustment mechanism. The underwater robot 1 is equipped with an auxiliary mechanism for guiding the cable toward the slot and assisting in loading. The movement direction of the underwater robot 1 is assumed to be the front end, and the other end is assumed to be the rear end. The subsequent description follows this standard and is not further elaborated.

[0041] A connecting ring 102 is provided on the body of the underwater robot 1 for connecting to a ship on the sea surface, so that the ship can provide power to the underwater robot 1 to drive the installation mechanism to groove and install, thereby extending the service life of the underwater robot 1 and improving work efficiency; the installation mechanism is provided at the tail end of the underwater robot 1, and the installation mechanism can automatically groove and bury the cable when driven by the underwater robot 1; the adjustment mechanism is provided on the underwater robot 1, and is used to drive the installation mechanism to be stored on the underwater robot 1 or to be expanded to excavate trenches of different depths.

[0042] See also Figure 1 and Figure 4The installation mechanism includes a guide tube 5, a slotted plate 503 and a diverter tube 504; a connecting seat 502 is provided at the upper end of the guide tube 5, and a mounting shaft 405 is fixedly installed at the other end of the connecting seat 502. The mounting shaft 405 is rotatably connected to the underwater robot 1, and the mounting shaft 405 is rotatably installed at the notch 103 at the tail end of the underwater robot 1. The side wall of the guide tube 5 is connected to the adjustment mechanism. A guide ring 101 is installed on the underwater robot 1. The guide ring 101 is arranged between the auxiliary mechanism and the installation mechanism to guide the cable to prevent the cable from being disturbed and entangled. Preferably, the guide ring 101 is arranged next to the notch 103 to provide uniform support for the cable; the slotted plate 503 is installed on the guide tube 5. The slotted plate 503 is divided into two side plates 5031 and a connecting plate 5032 with an arc-shaped cross section. The arc of the connecting plate 5032 matches the guide tube 5. The connecting plate 5032 is attached to the guide tube 5 along the length direction of the guide tube 5. The edges of the two side plates 5031 are connected as a whole through the arc-shaped connecting plate 5032, so that the cross section is set to The V-shaped guide tube 5 has two side panels that gradually increase in width from bottom to top, facilitating the removal of soil during the grooving process. The outer edges of the two side panels are curved to reduce resistance during operation. Each side panel 5031 is provided with several sets of through holes, allowing some soil and water to flow through, avoiding excessive pressure during grooving and extending its service life. A diverter pipe 504 is mounted directly below the outer circumference of the guide tube 5 via a connector and arranged along the length of the guide tube 5. Several sets of high-pressure nozzles 505 are arranged along the length of the diverter pipe 504. The input end of the diverter pipe 504 is connected to a high-pressure pump via a hose. The high-pressure pump is installed on a ship at sea, and the source of the water connected by the hose can be seawater. The guide tube 5 also has an ear seat 501 between the slotted plate 503 and the connecting seat 502. The two ear seats 501 are symmetrically arranged on either side of the guide tube 5 and are used to connect to the adjustment mechanism. The guide tube 5 is provided with a through hole, and the cable is input from the upper part of the guide tube 5 along the through hole and discharged from the tail end of the guide tube 5.

[0043] See also Figure 1 and Figure 3, the adjusting mechanism includes a rotating rod 4, a winding wheel 401, a support frame 403 and a transmission assembly 406; the rotating rod 4 is provided with two groups, the rotating rod 4 is perpendicular to the forward direction of the underwater robot 1, and a dual-axis motor is provided between the two groups of rotating rods 4, and the dual-axis motor is arranged at the center line of the length direction of the underwater robot 1. The two groups of rotating rods 4 are driven to rotate simultaneously by the dual-axis motor installed on the underwater robot 1, and one end of each group of rotating rods 4 is connected to the power output end of the dual-axis motor, and the other end is rotatably connected to the fixed block, and the fixed block is fixedly provided on the underwater robot 1; there are two groups of winding wheels 401, each of which is respectively provided on the corresponding rotating rod 4, and a pull rope 402 is wound on the two groups of winding wheels 401; the support frame 403 is installed on the underwater robot 1 and is arranged close to the mounting mechanism, and is arranged between the mounting mechanism and the rotating rod 4, the support frame 403 Symmetrical with respect to the center line of the underwater robot 1; two groups of fixed pulleys 404 are provided at the top of the support frame 403, and the two groups of pull ropes 402 are respectively passed around the corresponding fixed pulleys 404 and finally connected to the ear seat 501 installed on the side wall of the guide tube 5; two groups of connecting rods 407 are provided on the transmission assembly 406, one end of each connecting rod 407 passes through a fixed block and is connected to a rotating rod 4, and the other end is provided with a limiting disk, and the end of the mounting shaft 405 passes through both sides of the notch 103, and the end of the mounting shaft 405 is provided with a limiting disk. Each connecting rod 407 is connected to the end of the mounting shaft 405 on the corresponding side through a transmission assembly 406, so that the two groups of connecting rods 407 are respectively connected to the mounting shaft 405 and one group of rotating rods 4, and the transmission assembly 406 is used to drive the mounting shaft 405 and the rotating rod 4 to rotate simultaneously, and the transmission assembly 406 is set as a chain transmission assembly.

[0044] The two sets of rotating rods 4 are driven to rotate by a dual-axis motor, thereby driving the winding wheel 401. The rotation of the winding wheel 401 causes the pull rope 402 to be retracted or lengthened, thereby driving the guide tube 5 and the installation shaft 405 to rotate upward or downward along the connection with the underwater robot 1, thereby completing the storage of the installation mechanism, saving space, and adjusting the rotation angle of the guide tube 5 relative to the underwater robot 1 to adjust the cable laying depth. When the rotating rod 4 rotates, the transmission component 406 drives the installation shaft 405 to rotate at the same time, and then the installation shaft 405 drives the guide tube 5 to rotate and adjust, which can reduce the load on the pull rope 402 and extend its service life.

[0045] In this embodiment, the cable passing through the auxiliary mechanism is further passed through the guide tube 5, and the underwater robot 1 is started to move. At the same time, the guide tube 5 and the slotted plate 503 are adjusted by the adjustment mechanism to move to an appropriate depth in the seabed mud, thereby driving the cable directly into the deep inside of the mud. The underwater robot 1 drives the slotted plate 503 forward to groove the inside of the mud. At the same time, high-pressure water is delivered to the diversion pipe 504 by a high-pressure pump, and the high-pressure water is then sprayed toward the mud by multiple groups of high-pressure nozzles 505. The mud and sand flow along the two sides of the slotted plate 503 and the holes on the slotted plate 503, and can quickly leave the groove. The groove is opened in the deep of the mud and sand, so other mud and sand will appear above the groove. As the cable is continuously transported, it is laid in the groove at the bottom of the mud and sand. At the same time, the mud and sand above the groove directly covers the cable to bury it, thereby improving work efficiency.

[0046] During the above-mentioned cable laying process, the V-shaped slotted plate can also cover the mud and sand inside it on the cable.

[0047] Example 2

[0048] like Figure 1 and Figure 2 As shown, the present invention proposes an underwater installation device based on submarine cable laying. Compared with the first embodiment, the auxiliary mechanism includes a fixed seat 201 and a guide assembly; the fixed seat 201 is installed on the underwater robot 1, and the cross-sections of the fixed seat 201 and the movable seat 2 are both semicircular, and the edges on one side of the two are connected by a hinge, and the other side where the movable seat 2 and the fixed seat 201 are connected are provided with connecting edges along the length direction, and the two connecting edges are detachably connected by bolts, and the fixed seat 201 and the movable seat 2 form a circular or elliptical through hole, and the guide assembly is arranged in the through hole between the movable seat 2 and the fixed seat 201 for limiting and conveying the cable.

[0049] Preferably, the height of the fixing seat 201 is higher than the height of the through hole in the guide ring 101, which facilitates the transmission of the cable and reduces the resistance during the cable transmission process. The guide ring 101 is arranged between the fixing seat 201 and the guide tube 5.

[0050] See also Figure 2The guide assembly includes a lower mounting seat 3, an upper mounting seat 304 and an auxiliary seat 302; the lower mounting seat 3 is mounted on the fixed seat 201; the upper mounting seat 304 is mounted on the movable seat 2, and a plurality of groups of feed rollers 301 are provided on the lower mounting seat 3 and the upper mounting seat 304 along the length direction, and the axis of each feed roller 301 is perpendicular to the length direction of the guide assembly; the plurality of groups of feed rollers 301 are driven to rotate by a driving mechanism, and when the cable is conveyed toward the guide tube 5, the feed roller 301 at the bottom rotates counterclockwise, while the feed roller 301 at the top rotates clockwise. Only this kind of movement can quickly convey the cable toward the guide tube 5. The feed rollers 301 located above and below rotate in opposite directions, which is convenient for driving the cable forward for feeding. There are two groups of auxiliary seats 302, and the two groups of auxiliary seats 302 are respectively installed on the side walls of the lower mounting seat 3 and the upper mounting seat 304. The interior of the auxiliary seat 302 is provided with multiple groups of guide rollers 303 along the length direction. The axis of each guide roller 303 is perpendicular to the length direction of the guide assembly. The two auxiliary seats 302 are respectively arranged on both sides of the cable, so that the left and right displacement of the cable during transmission can be limited from both sides.

[0051] It should be noted that multiple sets of adjustment rods 202 are provided between the lower mounting seat 3 and the fixed seat 201, and between the upper mounting seat 304 and the movable seat 2. The adjustment rods 202 are composed of telescopic rods and springs sleeved on their exteriors. They facilitate automatic adjustment of the distance between the lower mounting seat 3 and the upper mounting seat 304 according to the thickness of the cable to avoid cable pinching. Preferably, the adjustment rods 202 are arranged in an array along the length of the lower mounting seat 3 or the movable seat 2. Furthermore, a monitoring mechanism described in Patent Publication No. CN115733095A can be provided at the feed end of the movable seat 2 and the fixed seat 201. This mechanism is prior art and is not shown. It is used to monitor the underwater status of the cable. Other monitoring mechanisms may also be used.

[0052] In this embodiment, the bolts are removed, the movable seat 2 is opened, the cables are laid on the multiple groups of feed rollers 301 at the top of the lower mounting seat 3, and the movable seat 2 and the fixed seat 201 are closed, so that the feed rollers 301 on the upper mounting seat 304 make the cables abut against the feed rollers 301 on the lower mounting seat 3. Under the limiting action of the guide rollers 303 on the left and right sides, the cables are stably installed on the guide assembly. Starting the driving mechanism can make several groups of feed rollers 301 rotate to feed the cables, which has an auxiliary feeding effect on the laying of the cables and improves the installation efficiency.

[0053] The present invention relates to the technical field of submarine cable laying, specifically to an underwater installation device and method based on submarine cable laying, comprising an underwater robot, an installation mechanism, and an adjustment mechanism; the underwater robot is provided with an auxiliary mechanism for guiding the cable to move toward the groove and assist in loading; the installation mechanism can automatically groove and bury the cable when driven by the underwater robot; the adjustment mechanism is provided on the underwater robot and is used to drive the installation mechanism to be stored on the underwater robot or to be expanded to perform trench excavation at different depths. The present invention can drive the cable to different depths within the seabed mud and sand, making it easy to bury the cable while laying it, thereby completing the installation, avoiding the traditional method of covering the trench due to water flow disturbance before the cable is laid, improving installation efficiency, and facilitating storage and saving space through the provision of the adjustment mechanism.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An underwater installation device based on submarine cable laying, characterized in that: The underwater robot (1) comprises an underwater robot (1), wherein a support frame (403) is provided at the tail end of the underwater robot (1), two fixed pulleys (404) are provided on the support frame (403), and a pull rope (402) is wound around each fixed pulley (404); one end of the two pull ropes (402) is respectively connected to a winding wheel (401), and the other ends of the two pull ropes (402) are commonly connected to a guide tube (5); Each winding wheel (401) is mounted on a rotating rod (4), one end of the two rotating rods (4) is commonly connected to a dual-axis motor, and the outer ends of the two rotating rods (4) are rotatably connected to the underwater robot (1); The upper end of the guide tube (5) is connected to a mounting shaft (405), the mounting shaft (405) is rotatably connected to the tail end of the underwater robot (1), and each end of the mounting shaft (405) is connected to the outer end of a rotating rod (4) via a transmission assembly (406); A through hole for passing the cable is provided inside the guide tube (5) along the length direction, a slotted plate (503) is fitted on the upper end of the outer periphery of the lower portion of the guide tube (5), and a diverter tube (504) is provided on the lower end of the outer periphery of the guide tube (5) along the length direction; The slotted plate (503) includes a connecting plate (5032) that fits the guide tube (5), and a side plate (5031) is integrally connected to each of the two sides of the connecting plate (5032). The width of each side plate (5031) gradually increases from bottom to top, and each side plate (5031) is provided with a through hole. A plurality of high-pressure nozzles (505) are provided on the diversion pipe (504) along its length, and the upper end of the diversion pipe (504) is connected to the high-pressure pump via a hose.

2. The underwater installation device based on submarine cable laying according to claim 1, characterized in that: The outer side edge of the side plate (5031) is arc-shaped.

3. The underwater installation device based on submarine cable laying according to claim 1, characterized in that: Ear seats (501) are provided on both sides of the guide tube (5), each ear seat (501) is connected to a drawstring (402), and the ear seat (501) is provided above the slotted plate (503).

4. The underwater installation device based on submarine cable laying according to claim 1, characterized in that: The outer end of each rotating rod (4) is mounted on the underwater robot (1) via a fixing block, and a limit plate is provided at the outer end of each rotating rod (4); both sides of the mounting shaft (405) pass through the underwater robot (1), and the outer end is provided with a limit plate; The transmission assembly (406) is a chain transmission assembly.

5. The underwater installation device based on submarine cable laying according to claim 1, characterized in that: A guide ring (101) is provided at the tail end of the underwater robot (1), a through hole is provided on the guide ring (101), and the axes of the guide ring (101) and the guide tube (5) are in the same plane.

6. The underwater installation device based on submarine cable laying according to claim 1, characterized in that: The underwater robot (1) is provided with a fixed seat (201), a movable seat (2) is movably connected to the fixed seat (201), and a guide assembly is provided in a through hole formed by the fixed seat (201) and the movable seat (2).

7. The underwater installation device based on submarine cable laying according to claim 6, characterized in that: The guide assembly comprises a lower mounting seat (3) and an upper mounting seat (304) which are arranged opposite to each other, wherein the lower mounting seat (3) is mounted on the fixed seat (201), and the upper mounting seat (304) is mounted on the lower end of the movable seat (2), and a plurality of groups of feed rollers (301) are arranged on the lower mounting seat (3) and the upper mounting seat (304) along the length direction.

8. The underwater installation device based on submarine cable laying according to claim 7, characterized in that: Multiple groups of adjustment rods (202) are provided between the lower mounting seat (3) and the fixed seat (201), and between the upper mounting seat (304) and the movable seat (2). Each group of adjustment rods (202) includes a telescopic rod and a spring sleeved on the outside of the telescopic rod.

9. The underwater installation device based on submarine cable laying according to claim 7, characterized in that: The guide assembly further comprises two auxiliary seats (302) arranged opposite to each other, which are respectively mounted on the fixed seat (201) and the movable seat (2). The two auxiliary seats (302) are arranged on both sides of the cable.

10. A method for using the underwater installation device based on submarine cable laying according to claim 1, characterized in that: The dual-axis motor drives the two groups of rotating rods (4) to rotate, and the rotating rods (4) drive the winding wheel (401) to rotate, and at the same time drive the installation shaft (405) to rotate through the transmission component (406), and the winding wheel (401) causes the pull rope (402) to be retracted or extended; the rotating rod (4) drives the installation shaft (405) to rotate through the transmission component (406), and the installation shaft (405) and the pull rope (402) jointly drive the guide tube (5) to rotate to adjust the angle or adjust the height, so that the guide tube (5) and the slotted plate (503) are inserted to a set depth; The cable passes through a through hole formed in the guide tube (5), and the underwater robot (1) drives the guide tube (5) and the slotted plate (503) to move forward. The slotted plate (503) slots the interior of the mud and sand, and the diversion pipe (504) sprays out high-pressure water. The high-pressure water sprays the mud and sand off the ground through multiple groups of high-pressure nozzles (505), thereby forming a groove. The cable is laid in the groove, and the mud and sand above the groove cover the cable.

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