Deepwater seabed riprap telescopic guide pipe device

Abstract

The invention discloses a deepwater seabed riprapping telescopic guide pipe device, and relates to the technical field of seabed riprapping, the deepwater seabed riprapping telescopic guide pipe device comprises a ship body, a telescopic traction mechanism, a folding traction mechanism and a telescopic sleeve are arranged on the ship body, the telescopic sleeve is rotatably connected with the ship body, and the telescopic traction mechanism and the folding traction mechanism are both connected with the telescopic sleeve; the bottom of the telescopic sleeve is provided with a discharging nozzle through a casing pipe connecting pipe, the casing pipe connecting pipe is provided with a multi-beam sonar, and the top of the telescopic sleeve is provided with a hopper, the telescopic sleeve is adopted for conveying broken stones, so that the broken stones can be normally laid on the surface of the submarine pipeline, and the submarine pipeline is prevented from being damaged by the surrounding environment; and the telescopic sleeve can be controlled to contract and extend through the telescopic traction mechanism, and the contracted telescopic sleeve is folded to the side of the ship body through the folding traction mechanism, so that the telescopic sleeve can be quickly retracted to shelter from wind in windy weather, the efficiency is improved, and the construction safety is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of seabed riprap, and in particular to a deepwater seabed riprap telescopic conduit device. Background Art

[0002] When laying submarine pipelines, such as oil pipelines, gravel needs to be laid on the pipelines to protect them from damage by the external environment, such as erosion by ocean currents. It is also necessary to protect the pipelines and improve their stability during use.

[0003] In the prior art, when laying gravel on a submarine pipeline, a plurality of pipes connected by flanges are generally used to extend to a preset depth, and then the gravel is transported to the top of the submarine pipeline through the plurality of pipes to cover the surface of the submarine pipeline. However, when laying gravel on the submarine pipeline by this laying method, since adjacent pipelines are connected by flanges, when sheltering from the wind is required in windy weather, the plurality of pipes must be disassembled one by one, which is not only labor-intensive but also has low work efficiency. Summary of the invention

[0004] The object of the present invention is to provide a deep-water seabed riprap telescopic conduit device to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A deep-water seabed riprap telescopic catheter device comprises a hull, a telescopic traction mechanism, a folding traction mechanism and a telescopic sleeve are arranged on the hull, and the telescopic sleeve is rotatably connected to the hull, the telescopic traction mechanism and the folding traction mechanism are both connected to the telescopic sleeve, a discharge nozzle is arranged at the bottom of the telescopic sleeve through a casing pipe, a multi-beam sonar is arranged on the casing pipe, and a hopper is arranged on the top of the telescopic sleeve; The telescopic traction mechanism is used to pull the telescopic sleeve to extend or shorten, and the folding traction mechanism is used to pull the shortened telescopic sleeve to rotate to the side of the hull.

[0006] As a preferred solution of the present invention, the telescopic sleeve includes an axle seat fixedly arranged on the hull, a rocker tube is rotatably connected to the axle seat, the rocker tube is connected to a plurality of sleeves through the rocker tube connection pipe, and the diameters of the plurality of sleeves increase successively along the radial direction of the rocker tube outward, the sleeve with the smallest diameter is connected to the rocker tube, the ends of two adjacent sleeves are concentrically slidably sleeved, a limiting member is commonly arranged on the two adjacent sleeves, and the limiting member is used to limit the two adjacent sleeves from being disconnected, and the discharge nozzle is arranged at the bottom of the lowest sleeve.

[0007] As a preferred solution of the present invention, the limit member includes a limit column and a limit stopper respectively arranged on two adjacent sleeves, and the limit column is arranged on the outer wall of one of the sleeves with a larger diameter and penetrates the sleeve to the inside, and the limit stopper is arranged on the outer wall of the other sleeve, and the limit column is used to limit the limit stopper from detaching from the sleeve sleeved on the outside.

[0008] As a preferred solution of the present invention, the outer wall of each sleeve is symmetrically provided with a plurality of locking devices, and the locking devices are used to fix the relative position between two adjacent sleeves; The locking device includes a fixing sleeve fixedly arranged on the outer wall of the sleeve along the radial direction of the sleeve, and one end of the fixing sleeve facing away from the sleeve is closed, and the other end of the fixing sleeve extends to the inside of the sleeve, a connecting sleeve is vertically arranged on the fixing sleeve, and the connecting sleeve is located below the fixing sleeve, an oil cylinder is rotatably connected in the connecting sleeve, and the output end of the oil cylinder is rotatably connected to two movable columns, and one of the movable columns is abutted against the inner wall of the fixing sleeve facing away from the sleeve, and a locking column slidably connected to the inner wall of the fixing sleeve is movably connected to the end of the other movable column facing the sleeve, and the locking column is used to abut against the outer wall of the corresponding sleeve.

[0009] As a preferred embodiment of the present invention, the telescopic traction mechanism includes a friction winch arranged on the hull and a plurality of retractable pulley groups respectively arranged on a plurality of casings, and extension pulley groups respectively arranged on a plurality of casings, the two adjacent casings at the bottom are each provided with a fixed pulley, a traction rope is arranged on the friction winch, and one end of the traction rope passes through a plurality of retractable pulley groups and the fixed pulley on the bottom casing in sequence and is connected to the top of the bottom casing, and the other end of the traction rope passes through a plurality of extension pulley groups and another fixed pulley in sequence and is connected to the top of the bottom casing.

[0010] As a preferred solution of the present invention, the contraction pulley block includes two first pulleys, and the two first pulleys have different heights and are both arranged on the outer wall of the same sleeve, and the traction rope passes through the first pulley with a lower height and the first pulley with a higher height in sequence; The extension pulley block includes two second pulleys, and the two second pulleys are respectively arranged on two adjacent sleeves, one of the second pulleys is located at the top of the sleeve with a larger diameter, and the other second pulley is located at the bottom of the outer wall of the other sleeve, and the traction rope passes through the second pulley at the bottom of the outer wall of the sleeve and the second pulley at the top of the sleeve with a larger diameter in sequence.

[0011] As a preferred solution of the present invention, two limiting pulleys are arranged on the top of the outer wall of the rocker tube, and the limiting pulleys are used to control the traction rope to be parallel to the axis of the rocker tube.

[0012] As a preferred solution of the present invention, the folding traction mechanism includes two lifting winches arranged on the hull, each of the lifting winches is provided with a lifting cable, and the two lifting cables are connected to the outer wall of the lowermost casing.

[0013] As a preferred solution of the present invention, a propeller and a detection element for detecting the direction of water flow are arranged on the casing pipe, and the propulsion direction of the propeller is perpendicular to the plane formed by the two lifting cables.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention adopts a telescopic sleeve to transport gravel, so that gravel can be normally laid on the surface of the submarine pipeline to avoid damage to the submarine pipeline by the surrounding environment, and the contraction and extension of the telescopic sleeve can be controlled by a telescopic traction mechanism, and the contracted telescopic sleeve can be folded to the side of the hull by a folding traction mechanism, so that the telescopic sleeve can be quickly folded to avoid wind in windy weather, which not only improves efficiency but also improves construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0016] Figure 1 The present invention provides a side structural schematic diagram of a deep-water seabed riprap telescopic conduit device; Figure 2 The present invention provides a side structural schematic diagram of another direction of a deep-water seabed riprap telescopic conduit device; Figure 3 The present invention provides a top view structural schematic diagram of a deep-water seabed riprap telescopic conduit device; Figure 4 The present invention provides a top view and cross-sectional structural schematic diagram of a deep-water seabed riprap telescopic conduit device; Figure 5 The present invention provides a schematic diagram of the principle of a deep-water seabed riprap telescopic conduit device; Figure 6 The present invention provides Figure 1 A schematic diagram of the structure enlargement of part A shown in FIG. Figure 7 A partial structural schematic diagram of a telescopic sleeve is provided for the present invention; Figure 8 A partial structural schematic diagram of a telescopic traction mechanism is provided for the present invention.

[0017] The numbers in the figure represent the following: 1. Hull; 2. Telescopic traction mechanism; 3. Folding traction mechanism; 4. Telescopic sleeve; 5. Discharging nozzle; 6. Hopper; 7. Casing pipe; 8. Propeller; 201, friction winch; 202, retracting pulley block; 203, extension pulley block; 204, fixed pulley; 205, traction rope; 206, limiting pulley; 301, lifting winch; 302, lifting rope; 401, shaft seat; 402, rocker arm tube; 403, sleeve; 404, limiting piece; 405, limiting column; 406, limiting stop; 407, fixing sleeve; 408, connecting sleeve; 409, oil cylinder; 410, movable column; 411, locking column; 412, locking device. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0020] like Figures 1 to 8 As shown, the present invention provides a deep-water seabed riprap telescopic catheter device, comprising a hull 1, on which a telescopic traction mechanism 2, a folding traction mechanism 3 and a telescopic sleeve 4 are arranged, and the telescopic sleeve 4 is rotatably connected to the hull 1, the telescopic traction mechanism 2 and the folding traction mechanism 3 are both connected to the telescopic sleeve 4, a discharge nozzle 5 is arranged at the bottom of the telescopic sleeve 4 through a casing pipe 7, a multi-beam sonar is arranged on the casing pipe 7, and a hopper 6 is arranged at the top of the telescopic sleeve 4.

[0021] The telescopic traction mechanism 2 is used to pull the telescopic sleeve 4 to extend or shorten, and the folding traction mechanism 3 is used to pull the shortened telescopic sleeve 4 to rotate to the side of the hull 1 .

[0022] When the technical solution of the present application is actually applied, the hull 1 sails to the specified position, and then the folding traction mechanism 3 pulls the telescopic sleeve 4 to a vertical state, and then the telescopic traction mechanism 2 controls the telescopic sleeve 4 to extend until the discharge nozzle 5 reaches a predetermined depth, and then the position of the submarine pipeline is located by multi-beam sonar, and the hull 1 adjusts its own position according to the located position, and then discharges the gravel through the hopper 6, and the gravel is discharged to the discharge nozzle 5 through the telescopic sleeve 4 and the casing pipe 7 to the submarine pipeline for laying, and the hull 1 lays the gravel on the submarine pipeline along the laying direction of the submarine pipeline, which can protect the submarine pipeline, improve the stability of the submarine pipeline, and avoid damage to the submarine pipeline by the surrounding environment, and when encountering strong winds, the telescopic sleeve 4 can be quickly retracted by the telescopic traction mechanism 2, and the telescopic sleeve 4 can be pulled by the folding traction mechanism 3 to rotate and fold to the side of the hull 1, which improves efficiency, so that it can quickly avoid the wind and avoid the occurrence of safety accidents.

[0023] Furthermore, the discharge nozzle 5 is a bowl-shaped discharge nozzle made of rubber, which avoids the problem of the discharge nozzle 5 colliding with the submarine pipeline when the telescopic sleeve 4 is extended, thereby causing damage to the submarine pipeline.

[0024] In this embodiment, multi-beam sonar is an existing technology, and its technical principle will not be elaborated in detail.

[0025] The telescopic sleeve 4 includes an axle seat 401 fixedly set on the hull 1, and a rocker tube 402 is rotatably connected to the axle seat 401. The rocker tube 402 is connected to multiple sleeves 403 through the rocker tube connection, and the diameters of the multiple sleeves 403 increase successively along the radial direction of the rocker tube 402. The sleeve 403 with the smallest diameter is connected to the rocker tube 402, and the ends of two adjacent sleeves 403 are concentrically slidably sleeved. A limiting member 404 is commonly provided on the two adjacent sleeves 403, and the limiting member 404 is used to limit the disconnection of the two adjacent sleeves 403, and the discharge nozzle 5 is provided at the bottom of the lowest sleeve 403.

[0026] The rocker arm tube 402 is rotatably mounted on the shaft seat 401, and is used to drive the multiple sleeves 403 to rotate, and the multiple sleeves 403 are slidably sleeved together in sequence, so that the telescopic traction mechanism 2 can achieve the overall extension and shortening of the telescopic sleeve 4 by controlling the mutual sliding between the multiple sleeves 403, so that it can be quickly retracted to avoid wind in windy weather, thereby improving efficiency.

[0027] The diameters of the multiple sleeves 403 increase from the inside to the outside, and the sleeve 403 with the smallest diameter is connected to the rocker arm tube 402. That is, viewed from the inside of the multiple sleeves 403, the top of the sleeve 403 will not hinder the gravel during the falling process, and will not allow the gravel to enter the gap between the two sleeves 403, thereby ensuring that the multiple sleeves 403 can slide normally.

[0028] The limiting member 404 is used to limit the separation of two adjacent sleeves 403 from each other, so as to prevent the telescopic sleeve 4 from being over-extended and causing the plurality of sleeves 403 to be separated.

[0029] The limiting member 404 includes a limiting column 405 and a limiting stopper 406 respectively arranged on two adjacent sleeves 403, and the limiting column 405 is arranged on the outer wall of one of the sleeves 403 with a larger diameter and penetrates the sleeve 403 to the inside, and the limiting stopper 406 is arranged on the outer wall of the other sleeve 403. The limiting column 405 is used to limit the limiting stopper 406 from detaching from the sleeve 403 with the outer sleeve.

[0030] The limiting post 405 blocks the limiting stopper 406 , so that the sleeve 403 with a smaller diameter is hindered from moving in a direction of separating from the adjacent sleeve 403 with a larger diameter, thereby preventing the multiple sleeves 403 from separating from each other.

[0031] A plurality of locking devices 412 are symmetrically arranged on the outer wall of each sleeve 403 , and the locking devices 412 are used to fix the relative position between two adjacent sleeves 403 .

[0032] The locking device 412 includes a fixing sleeve 407 fixedly arranged on the outer wall of the sleeve 403 along the radial direction of the sleeve 403, and one end of the fixing sleeve 407 facing away from the sleeve 403 is closed, and the other end of the fixing sleeve 407 extends to the inside of the sleeve 403, and a connecting sleeve 408 is vertically arranged on the fixing sleeve 407, and the connecting sleeve 408 is located below the fixing sleeve 407, and a cylinder 409 is rotatably connected in the connecting sleeve 408, and the output end of the cylinder 409 is rotatably connected to two movable columns 410, and one of the movable columns 410 is abutted against the inner wall of the fixing sleeve 407 facing away from the sleeve 403, and a locking column 411 slidably connected to the inner wall of the fixing sleeve 407 is movably connected to the other movable column 410 at one end facing the sleeve 403, and the locking column 411 is used to abut against the outer wall of the corresponding sleeve 403.

[0033] The locking device 412 is used to fix the position between two adjacent sleeves 403 after the positions of the multiple sleeves 403 after movement are determined, so as to ensure the stability of the multiple sleeves 403 when in use.

[0034] After the position of the sleeve 403 is determined, the output end of the cylinder 409 presses the two movable columns 410, so that the end of one movable column 410 rotates around the inner side of the fixed sleeve 407 away from the sleeve 403, and presses the cylinder 409 to rotate, thereby squeezing the other movable column 410 to move in the direction of the sleeve 403 in the fixed sleeve 407, thereby driving the locking column 411 and the inner outer wall of the sleeve 403, and then the multiple locking columns 411 of the multiple locking devices 412 can squeeze the outer wall of the sleeve 403 to fix the position between two adjacent sleeves 403.

[0035] Furthermore, the locking device 412 may also be arranged upside down on the outside of the sleeve 403 as long as it can squeeze the outer wall of the sleeve 403 on the inside.

[0036] The telescopic traction mechanism 2 includes a friction winch 201 arranged on the hull 1 and a plurality of retractable pulley blocks 202 respectively arranged on a plurality of sleeves 403, and extension pulley blocks 203 respectively arranged on a plurality of sleeves 403. The two adjacent sleeves 403 at the bottom are each provided with a fixed pulley 204. A traction rope 205 is arranged on the friction winch 201, and one end of the traction rope 205 passes through a plurality of retractable pulley blocks 202 and the fixed pulley 204 on the bottom sleeve 403 in sequence and is then connected to the top of the bottom sleeve 403. The other end of the traction rope 205 passes through a plurality of extension pulley blocks 203 and another fixed pulley 204 in sequence and is then connected to the top of the bottom sleeve 403.

[0037] The contraction pulley block 202 includes two first pulleys with different heights and are both arranged on the outer wall of the same sleeve 403. The traction rope 205 passes through the first pulley with a lower height and the first pulley with a higher height in sequence.

[0038] The extension pulley block 203 includes two second pulleys, and the two second pulleys are respectively arranged on two adjacent sleeves 403, one of the second pulleys is located at the top of the sleeve 403 with a larger diameter, and the other second pulley is located at the bottom of the outer wall of the other sleeve 403, and the traction rope 205 passes through the second pulley at the bottom of the outer wall of the sleeve 403 and the second pulley at the top of the sleeve 403 with a larger diameter in sequence.

[0039] When one end of the traction rope 205 passes through the contraction pulley block 202, the two first pulleys of the contraction pulley block 202 are both located on the outer wall of the same sleeve 403. The traction rope 205 first passes through the first pulley with a lower height, and then passes through the other first pulley with a higher height. According to this winding sequence, the traction rope 205 passes through multiple contraction pulley blocks 202 in sequence. When the traction rope 205 passes through the lowest sleeve 403 (or the outermost sleeve 403), the traction rope 205 passes through the fixed pulley 204 and then is connected to the top of the sleeve 403.

[0040] When the other end of the traction rope 205 passes through the extension pulley block 203, the two second pulleys of the extension pulley block 203 are respectively located on two adjacent sleeves 403. The traction rope 205 first passes through the second pulley on the sleeve 403 with a smaller diameter, and then passes through the second pulley on the other sleeve 403 with a larger diameter. According to this winding sequence, the traction rope 205 passes through multiple extension pulley blocks 203 in sequence. When the traction rope 205 passes through the lowest sleeve 403, the traction rope 205 passes through the fixed pulley 204 and is connected to the top of the sleeve 403.

[0041] On the lowermost sleeve 403 , the heights of the two fixed pulleys 204 are both lower than the top height of the sleeve 403 .

[0042] When controlling the retraction of the telescopic sleeve 4, the friction winch 201 reels the traction rope 205 passing through the multiple first pulleys and the fixed pulley 204, so that the end of the traction rope 205 pulls the lowest sleeve 403 to move upward, and interacts with the first pulley with a lower height on the same sleeve 403, thereby driving the corresponding sleeve 403 to move upward, so that the multiple sleeves 403 move upward in sequence and overlap with each other, thereby completing the retraction of the telescopic sleeve 4.

[0043] At the same time, the friction winch 201 extends the other end of the traction rope 205, so that two adjacent sleeves 403 can slide against each other to shorten the overall length.

[0044] When controlling the extension of the telescopic sleeve 4, the friction winch 201 controls the movement of the traction rope 205 in the reverse direction, so that the traction rope 205 passing through multiple second pulleys and another fixed pulley 204 pulls the lowest sleeve 403 to move downward. On the same extension pulley group 203, the traction rope 205 will use the second pulley at the bottom of the inner sleeve 403 as a fulcrum to squeeze the second pulley at the top of the sleeve 403, thereby making the multiple sleeves 403 slide relative to each other, and then the entire telescopic sleeve 4 is extended.

[0045] Two limiting pulleys 206 are arranged on the top of the outer wall of the rocker arm tube 402 , and the limiting pulleys 206 are used to control the traction rope 205 to be parallel to the axis of the rocker arm tube 402 .

[0046] The direction in which the traction rope 205 pulls the sleeve 403 is controlled to be parallel to the axis of the rocker arm tube 402, thereby ensuring that the telescopic sleeve 4 can be extended and shortened.

[0047] The folding traction mechanism 3 comprises two lifting winches 301 arranged on the hull 1 , each lifting winch 301 is provided with a lifting cable 302 , and both lifting cables 302 are connected to the outer wall of the lowest sleeve 403 .

[0048] When the telescopic sleeve 4 is folded, one of the lifting winches 301 reels the lifting rope 302 , and the other lifting winch 301 releases the lifting rope 302 , so that the telescopic sleeve 4 rotates to one side and is folded to the side of the hull 1 .

[0049] When the telescopic sleeve 4 is extended, the two lifting cables 302 are symmetrical about the telescopic sleeve 4 to pull the telescopic sleeve 4 from both sides of the telescopic sleeve 4 at the same time, thereby improving the stability of the telescopic sleeve 4 during use.

[0050] A propeller 8 and a detection element for detecting the direction of water flow are arranged on the casing pipe 7 , and the propulsion direction of the propeller 8 is perpendicular to the plane formed by the two lifting cables 302 .

[0051] The direction of the water flow is detected by the detection element, and then the propeller 8 is used to propel the water in the opposite direction to offset the thrust of the water flow. The thrust direction of the propeller 8 is perpendicular to the plane formed by the two lifting cables 302, that is, the propulsion direction is perpendicular to the lifting cables 302, which further improves the stability of the telescopic sleeve 4 during use.

[0052] In this embodiment, the propeller 8 and the detection element are both existing technologies, and their technical principles will not be elaborated in detail.

[0053] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention.

[0054] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A deep-water seabed riprap telescopic conduit device, comprising a hull (1), characterized in that: The hull (1) is provided with a telescopic traction mechanism (2), a folding traction mechanism (3) and a telescopic sleeve (4), and the telescopic sleeve (4) is rotatably connected to the hull (1), the telescopic traction mechanism (2) and the folding traction mechanism (3) are both connected to the telescopic sleeve (4), a discharge nozzle (5) is provided at the bottom of the telescopic sleeve (4) via a sleeve pipe (7), a multi-beam sonar is provided on the sleeve pipe (7), and a hopper (6) is provided at the top of the telescopic sleeve (4); The telescopic traction mechanism (2) is used to traction the telescopic sleeve (4) to extend or shorten, and the folding traction mechanism (3) is used to traction the shortened telescopic sleeve (4) to rotate to the side of the hull (1).

2. A deep-water seabed riprap telescopic conduit device according to claim 1, characterized in that: The telescopic sleeve (4) comprises an axle seat (401) fixedly arranged on the hull (1), a rocker tube (402) being rotatably connected to the axle seat (401), the rocker tube (402) being connected to a plurality of sleeves (403) via a rocker tube, and the diameters of the plurality of sleeves (403) increase in sequence along the radial direction of the rocker tube (402) outwards, the sleeve (403) with the smallest diameter being connected to the rocker tube (402), the ends of two adjacent sleeves (403) being concentrically slidably sleeved, the two adjacent sleeves (403) being jointly provided with a limiting member (404), and the limiting member (404) being used to limit the two adjacent sleeves (403) from being disconnected, and the discharge nozzle (5) being provided at the bottom of the lowest sleeve (403).

3. A deep-water seabed riprap telescopic conduit device according to claim 2, characterized in that: The limiting member (404) comprises a limiting column (405) and a limiting stopper (406) respectively arranged on two adjacent sleeves (403), wherein the limiting column (405) is arranged on the outer wall of one of the sleeves (403) with a larger diameter and penetrates the sleeve (403) to the inside, and the limiting stopper (406) is arranged on the outer wall of the other sleeve (403), and the limiting column (405) is used to limit the limiting stopper (406) from being separated from the sleeve (403) sleeved on the outside.

4. A deep-water seabed riprap telescopic conduit device according to claim 2, characterized in that: The outer wall of each sleeve (403) is symmetrically provided with a plurality of locking devices (412), and the locking devices (412) are used to fix the relative position between two adjacent sleeves (403); The locking device (412) comprises a fixing sleeve (407) fixedly arranged on the outer wall of the sleeve (403) along the radial direction of the sleeve (403), and one end of the fixing sleeve (407) facing away from the sleeve (403) is closed, and the other end of the fixing sleeve (407) extends into the interior of the sleeve (403). A connecting sleeve (408) is vertically arranged on the fixing sleeve (407), and the connecting sleeve (408) is located below the fixing sleeve (407). The connecting sleeve (408) rotates inside the fixing sleeve (407). The oil cylinder (409) is movably connected to the sleeve (407), and the output end of the oil cylinder (409) is rotatably connected to two movable columns (410), and one of the movable columns (410) is abutted against the inner wall of the fixed sleeve (407) away from the sleeve (403), and the other movable column (410) is movably connected to a locking column (411) slidably connected to the inner wall of the fixed sleeve (407) at one end facing the sleeve (403), and the locking column (411) is used to abut against the outer wall of the corresponding sleeve (403).

5. A deep-water seabed riprap telescopic conduit device according to claim 2, characterized in that: The telescopic traction mechanism (2) comprises a friction winch (201) arranged on the hull (1) and a plurality of contraction pulley blocks (202) respectively arranged on a plurality of sleeves (403), and extension pulley blocks (203) respectively arranged on a plurality of sleeves (403), the two adjacent sleeves (403) at the bottom are each provided with a fixed pulley (204), a traction rope (205) is arranged on the friction winch (201), and one end of the traction rope (205) sequentially passes through the plurality of contraction pulley blocks (202) and the fixed pulley (204) on the bottom sleeve (403) and is connected to the top of the bottom sleeve (403), and the other end of the traction rope (205) sequentially passes through the plurality of extension pulley blocks (203) and another fixed pulley (204) and is connected to the top of the bottom sleeve (403).

6. A deep-water seabed riprap telescopic conduit device according to claim 5, characterized in that: The contraction pulley block (202) comprises two first pulleys, and the two first pulleys have different heights and are both arranged on the outer wall of the same sleeve (403), and the traction rope (205) passes through the first pulley with a lower height and the first pulley with a higher height in sequence; The extension pulley block (203) comprises two second pulleys, and the two second pulleys are respectively arranged on two adjacent sleeves (403), wherein one of the second pulleys is located at the top of the sleeve (403) with a larger diameter, and the other second pulley is located at the bottom of the outer wall of the other sleeve (403), and the traction rope (205) passes through the second pulley at the bottom of the outer wall of the sleeve (403) and the second pulley at the top of the sleeve (403) with a larger diameter in sequence.

7. A deep-water seabed riprap telescopic conduit device according to claim 5, characterized in that: Two limiting pulleys (206) are arranged on the top of the outer wall of the rocker tube (402), and the limiting pulleys (206) are used to control the traction rope (205) to be parallel to the axis of the rocker tube (402).

8. The deep-water seabed riprap telescopic conduit device according to claim 2, characterized in that: The folding traction mechanism (3) comprises two lifting winches (301) arranged on the hull (1), each of the lifting winches (301) is provided with a lifting cable (302), and the two lifting cables (302) are connected to the outer wall of the lowest sleeve (403).

9. A deep-water seabed riprap telescopic conduit device according to claim 8, characterized in that: The casing pipe (7) is provided with a propeller (8) and a detection element for detecting the direction of water flow, and the propulsion direction of the propeller (8) is perpendicular to the plane formed by the two lifting cables (302).

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