CN116623663B

CN116623663B - Omnidirectional anti-scouring construction system and method for offshore wind power foundation

Info

Publication number: CN116623663B
Application number: CN202310897538.6A
Authority: CN
Inventors: 沈锋; 吴春寒; 苏展; 苏铁焱; 马力
Original assignee: Ztt Marine Engineering Co ltd
Current assignee: Ztt Marine Engineering Co ltd
Priority date: 2023-07-21
Filing date: 2023-07-21
Publication date: 2023-09-22
Anticipated expiration: 2043-07-21
Also published as: CN116623663A

Abstract

The invention discloses an omnibearing anti-scouring construction system for an offshore wind power foundation and a method thereof, wherein the omnibearing anti-scouring construction system comprises a stone throwing ship, a first bottom plate, a second bottom plate, I-steel, a sleeve and a guide pipe; a first bottom plate is arranged on a deck of the stone throwing ship, the left end of the first bottom plate extends to the port side of the stone throwing ship and turns upwards around the right end of the first bottom plate through an adjusting mechanism; the second bottom plate and the first bottom plate are arranged at an upper-lower interval, and the second bottom plate horizontally moves along the port-starboard direction through the moving mechanism; i-beams are arranged on the upper surface of the second bottom plate along the port-starboard direction, sleeves are vertically arranged between the two I-beams at intervals, and the sleeves vertically move up and down along the two I-beams through a lifting mechanism; and guide pipes are arranged in the sleeve at intervals of the same axis, vertically move up and down along the sleeve through the lifting mechanism, are matched with the moving mechanism and the adjusting mechanism, and perform stone throwing operation on the pile foundation, around the pile foundation and the submarine cable. The invention realizes the omnibearing scour prevention construction operation and improves the construction efficiency.

Description

Omnidirectional anti-scouring construction system and method for offshore wind power foundation

Technical Field

The invention relates to the technical field of offshore wind power foundations, in particular to an omnibearing anti-scouring construction system and method for an offshore wind power foundation.

Background

The offshore wind power has the advantages of high wind speed, long effective power generation time, no land occupation and the like, and has been rapidly developed in recent years. Under the influence of the obstruction of pile foundations and the speed gradient of ocean currents, scouring is easy to generate around the pile foundations constructed at sea, so that sediment around the pile foundations is taken away, the pile body bearing capacity is reduced, the foundation is inclined, and even serious consequences of foundation overall collapse can be generated.

In order to solve the problem that the foundation pile of the offshore wind turbine foundation is scoured, the scour prevention protection mode adopted at present is a riprap, but because the offshore environment is complex, the offshore construction period of the riprap is long, the riprap is difficult to throw in place, the construction is difficult to achieve the design intention, and the protection effect is seriously affected; in addition, because the volume of the riprap hull is large, the pile foundation is difficult to stop too close, the riprap operation is performed at the position close to the pile foundation, and the accuracy of the riprap is difficult to control, so that the riprap effect is poor, and the anti-scouring effect is influenced. Therefore, the above problems need to be solved.

Disclosure of Invention

The invention aims to solve the technical problem of providing an omnibearing anti-scouring construction system and method for offshore wind power foundation, which can perform orderly stone throwing operation on a pile foundation, around the pile foundation and on a submarine cable, and avoid the phenomenon that graded stone floats along with ocean currents in the throwing and filling process, thereby realizing omnibearing anti-scouring construction operation, improving construction efficiency and saving construction cost.

In order to solve the technical problems, the invention adopts the following technical scheme: the invention relates to an omnibearing anti-scouring construction system for an offshore wind power foundation, which has the innovation points that: comprises a stone throwing ship, a first bottom plate, an adjusting mechanism, a moving mechanism, a second bottom plate, a lifting mechanism, I-steel, a sleeve and a guide pipe; a first bottom plate is horizontally arranged in the middle position on the deck of the stone throwing ship, the left end of the first bottom plate horizontally extends to the port side of the stone throwing ship, and the left end of the first bottom plate is turned upwards around the right end of the first bottom plate through an adjusting mechanism; the second bottom plate and the first bottom plate are horizontally arranged at intervals in parallel up and down, and the second bottom plate horizontally moves on the first bottom plate along the port-starboard direction through a moving mechanism; i-steel is arranged in the middle of the upper surface of the second bottom plate at vertical intervals along the port-starboard direction, a sleeve is arranged between the two I-steel at vertical intervals, the sleeve vertically moves up and down along the two I-steel through a lifting mechanism, and when the sleeve vertically moves to a lower limit position, the lower end of the sleeve extends out of the bottom of the stone throwing ship; guide pipes are arranged in the sleeve at intervals along the same axis, vertically move up and down along the sleeve through the lifting mechanism, are matched with the moving mechanism and the adjusting mechanism, and sequentially perform orderly stone throwing operation on the pile foundation, the periphery of the pile foundation and the submarine cable;

The length of the second bottom plate in the left-right direction is smaller than that of the first bottom plate in the left-right direction, and the moving mechanism comprises a first sliding rail, a second motor, a first sliding block, a second gear, a second rack and a rack mounting seat; two first sliding rails are further arranged on the upper surface of the first bottom plate at horizontal intervals along the head-to-tail direction, each first sliding rail is horizontally arranged along the port-starboard direction of the stone throwing ship, the lengths of the first sliding rails are consistent with the lengths of the first bottom plate in the left-to-right direction, and the first sliding rails are fixedly arranged at corresponding positions on the upper surface of the first bottom plate respectively; a second rack is arranged at the outer side of one of the first slide rails in parallel and horizontally at intervals, the length of the second rack is consistent with that of the corresponding first slide rail, the tooth surface of the second rack is horizontally arranged towards the direction corresponding to the first slide rail, and a rack mounting seat is also arranged on the lower surface of the second rack and is fixedly arranged at the corresponding position of the upper surface of the first bottom plate through the rack mounting seat; the second bottom plate is horizontally arranged right above the two first sliding rails at intervals, two first sliding blocks are horizontally arranged on the lower surface of the second bottom plate at intervals along the head-to-tail direction, each first sliding block is of a strip-shaped structure matched with the corresponding first sliding rail, the second bottom plate is horizontally arranged along the left-right board direction of the stone throwing ship, and the distance between the two first sliding blocks corresponds to the distance between the two first sliding rails; the second bottom plate is sleeved on the corresponding two first sliding rails through first sliding blocks, and horizontally reciprocates on the corresponding two first sliding rails along the port-starboard direction through the first sliding blocks; two second motors are vertically arranged on one side, close to the second racks, of the upper surface of the second bottom plate at intervals in sequence along the port-starboard direction, and the actions of the two second motors are synchronous; each second motor is respectively in threaded connection and fixed with the upper surface of the second bottom plate, and the output end of each second motor extends out of the lower surface of the second bottom plate vertically and downwards and is respectively in meshed connection with the second rack through a second gear; each second gear is arranged in a mutually noninterfere mode with the corresponding first sliding block, and under the drive of a second motor, the second bottom plate horizontally reciprocates along the port and starboard direction through the meshing cooperation of the second gears and the second racks, and horizontally extends out of the port side of the stone throwing ship.

Preferably, the moving mechanism further comprises a second hydraulic cylinder, a first limiting plate, a balancing weight and a second limiting plate; the length of each first sliding block is larger than the distance that the second bottom plate extends out of the port side of the stone throwing ship, and the right half part of the second bottom plate is still connected with the corresponding first sliding rail through the first sliding blocks when the guide pipe is lowered from the port side of the stone throwing ship; a second limiting plate is further vertically and fixedly arranged on the upper surface of the first bottom plate close to the right side, the second limiting plate does not interfere with the action of the adjusting mechanism, and the second limiting plate limits the movement of the second bottom plate horizontally towards the starboard direction; a balancing weight is fixedly arranged on the upper surface of the second bottom plate near the right end of the second bottom plate, the balancing weight and the corresponding I-steel are arranged at intervals, and the second bottom plate is prevented from being separated from the moving mechanism when the guide pipe is lowered from the left outboard side of the stone throwing ship; the left side surface of the stone throwing ship is also embedded with two second hydraulic cylinders at intervals in an inclined way along the head-to-tail direction relative to the position of the moving mechanism, the fixed end of each second hydraulic cylinder is respectively embedded with the corresponding position inside the stone throwing ship, and the piston rod of each second hydraulic cylinder is respectively inclined upwards towards the direction of the second bottom plate to extend out of the stone throwing ship and is respectively in threaded connection with the corresponding first limiting plate; each first limiting plate is of an L-shaped structure, the horizontal edge of each first limiting plate is arranged towards the center of the stone throwing ship, the lower surface of the horizontal edge of each first limiting plate is respectively in threaded connection and fixation with a piston rod of a corresponding second hydraulic oil cylinder, the surface of the horizontal edge of each first limiting plate is respectively in abutting fit with the corresponding position of the lower surface of a corresponding second bottom plate, the first limiting plates are respectively arranged in a non-interference manner with the corresponding first sliding blocks, and then lifting and supporting are carried out when the corresponding second bottom plate extends out of the left side of the stone throwing ship; the vertical edges of the first limiting plates are upwards arranged and respectively abutted against and attached to the corresponding side surfaces of the second bottom plates, so that limiting is carried out when the corresponding second bottom plates extend out of the left side of the stone throwing ship.

Preferably, the adjusting mechanism comprises a first hydraulic cylinder, a pushing block, a base and a second rotating shaft; the right end of the first bottom plate horizontally extends towards the starboard direction of the riprap and does not extend to the starboard side of the riprap; the front and rear outer sides of the right end of the first bottom plate are respectively provided with a base, each base is vertically and fixedly connected with a corresponding position of a deck of the stone throwing ship, the second rotating shaft horizontally penetrates through the two bases and the first bottom plate in sequence along the direction perpendicular to the port and starboard, and the first bottom plate is vertically and rotatably connected with the corresponding base; the front and rear outer sides of the left end of the first bottom plate are respectively provided with a first hydraulic oil cylinder, and the actions of the two first hydraulic oil cylinders are synchronous; each first hydraulic cylinder is horizontally arranged along the direction vertical to the port and starboard, the tail part of each first hydraulic cylinder is respectively fixed at a corresponding position on the deck of the stone throwing ship, no interference is generated to the horizontal movement of the second bottom plate, and the piston rod of each first hydraulic cylinder is horizontally arranged towards the direction of the first bottom plate and is respectively in threaded connection and fixed with the corresponding pushing block; each pushing block is of a right-angle triangle structure, inclined planes of the pushing blocks are arranged towards the first bottom plate, triangular grooves matched with the pushing blocks are respectively embedded into the outer side faces of the first bottom plate relative to the positions of the corresponding pushing blocks, and then the distance between the bottom ends of the guide pipes and pile foundations is adjusted by the fact that the pushing blocks are matched with the triangular grooves, the first bottom plate vertically rotates upwards around the base under the driving of the first hydraulic oil cylinder, and the guide pipes are driven to rotate.

Preferably, a guide hole matched with the sleeve is vertically and coaxially formed in the position of the stone throwing ship relative to the sleeve, the guide hole vertically extends upwards out of the upper surface of the second bottom plate, and the stone throwing ship is stopped on the sea surface near the pile foundation without influence; the length of the sleeve is matched with the length of the corresponding I-steel, and when the sleeve needs to be ensured to vertically move to the upper limit position, the sleeve is completely recovered above the second bottom plate, and no interference is generated to the horizontal movement of the second bottom plate.

Preferably, the lifting mechanism comprises a first frame, a first rotating shaft, a first roller, a first rack, a first motor, a first gear and a connecting plate; the inner bottom surface of one side of each I-shaped steel close to the sleeve is also provided with two first racks in a vertically welding way along the length direction, and the tooth surface of each first rack is arranged in a direction away from the sleeve; two first frames are respectively arranged at the left side and the right side of the upper end of the sleeve at intervals up and down and close to one side corresponding to the I-steel, each first frame is of a U-shaped structure matched with the I-steel, both ends of each first frame are folded inwards, and the first frames are respectively sleeved at one end corresponding to the I-steel close to the sleeve at intervals through the inner folded edges; two first rollers are horizontally arranged between the inner bottom surface of one side of each first frame close to the sleeve and the corresponding I-steel at intervals along the head-to-tail direction, the rolling direction of each first roller is consistent with the length direction of the corresponding I-steel, the first rollers are respectively connected with the front side surface and the rear side surface of the corresponding first frame in a rotating way through first rotating shafts, and the first rollers are respectively in rolling fit with the corresponding I-steel and the inner bottom surface of one side of the corresponding first frame close to the sleeve; the front and rear outer side surfaces of each first frame are respectively and horizontally symmetrically provided with a first motor relative to the first rack, and the actions of each first motor are synchronous; the output end of each first motor vertically extends to the interior of the corresponding first frame and is in meshed connection with the corresponding first rack through a first gear; the two outer bottoms of the first frames on each side are respectively and vertically attached with connecting plates, the sleeves are respectively connected with the corresponding first frames through the connecting plates, and then under the driving of the first motor, the sleeves vertically reciprocate up and down along the length direction of the I-steel through the meshing fit of the first gear and the first rack.

Preferably, 2 layers of limiting assemblies are arranged between the sleeve and the guide pipe at intervals up and down by the top end of the sleeve, each limiting assembly is used for radially limiting the descending action of the guide pipe, and each limiting assembly comprises a first pushing roller and a first roller seat; four first roller seats are uniformly distributed and spaced on the inner circumferential surface of the sleeve relative to the position of each layer of limiting assembly along the circumferential direction of the sleeve, and a first pushing roller is rotatably connected to one side of each first roller seat, which is close to the guide tube; the rotation direction of each first pushing roller is consistent with the vertical movement direction of the guide tube, and then the first pushing rollers are in contact with the corresponding positions of the outer circumferential surface of the guide tube in a propping manner, so that the lowering action of the guide tube is radially limited.

Preferably, the lifting mechanisms do not interfere the action of the limiting assembly, and comprise a roller, a roller bracket, a pulley block, a second frame, lifting lugs, a steel wire rope, a second pushing roller, a second roller seat, a fixed plate, a reinforcing plate and a limiting ring; the outer circumferential surface of the bottom end of the guide tube is also sleeved and fixed with a second frame in a coaxial manner, the area of the second frame is smaller than the internal sectional area of the sleeve, and the guide tube is not interfered with the descending action of the guide tube along the sleeve; the periphery of the second frame is also provided with second roller seats at intervals in sequence, one side of each second roller seat, which is close to the sleeve, is also rotationally connected with a second pushing roller, the rotation direction of each second pushing roller is consistent with the vertical movement direction of the guide tube, and the radial limiting is carried out on the lowering action of the guide tube through the abutting contact between the second pushing roller and the corresponding position of the inner circumferential surface of the sleeve; lifting lugs are further vertically and symmetrically welded on the upper surface of the second frame in a rectangular shape, each lifting lug is respectively arranged right below a position between two adjacent first pushing rollers, a pulley block is further respectively arranged on the upper surface of each I-steel corresponding to the lifting lug, and each pulley block is respectively fixedly arranged at a position corresponding to the upper surface of the I-steel through a fixing plate and is respectively connected with the corresponding I-steel in a vertical rotation mode along the radial direction of the sleeve; a plurality of limiting rings are sequentially arranged on the inner circumferential surface of the sleeve at intervals along the length direction of the sleeve relative to the position of the corresponding lifting lug, and each layer of limiting rings are horizontally arranged along the circumferential direction of the sleeve and are respectively arranged in a non-interference manner with the guide tube, so that the steel wire rope is limited through the limiting rings; the upper end lateral surface of each I-steel still is equipped with the cylinder support respectively for corresponding assembly pulley position department, and each still vertically is equipped with the cylinder on the cylinder support respectively, each the cylinder is radially along the sleeve respectively with correspond the vertical rotation of cylinder support is connected, and each wire rope's one end respectively through the lug with second frame fixed connection, and the other end respectively pass corresponding spacing ring in proper order, after bypassing corresponding assembly pulley respectively, respectively the wiring is on corresponding cylinder, and then pulls wire rope through rotating the cylinder, drives the stand pipe and carries out vertical up-and-down motion along the sleeve.

Preferably, a third frame is sleeved on the outer circumferential surface of the bottom end of the guide tube in a coaxial manner, and the third frame is arranged right below the second frame at intervals, is rotationally connected with the guide tube, and does not interfere the stone throwing action of the guide tube; the area of the third frame is smaller than the internal sectional area of the sleeve, so that the guiding pipe is not interfered with the descending action of the guiding pipe along the sleeve; the periphery of the third frame is also provided with automatic propeller components at intervals in sequence, and the third frame rotates around the guide pipe under the drive of the automatic propeller components, so that the guide pipe is subjected to displacement compensation.

The invention discloses a construction method of an omnibearing anti-scouring construction system for an offshore wind power foundation, which is characterized by comprising the following steps of:

(1) The stone throwing operation is carried out on the position close to the pile foundation

(1.1) the stone throwing ship enters the field to stop at a pile leaning foundation;

(1.2) under the drive of the moving mechanism, the guide pipe moves horizontally along with the second bottom plate to the outside of the port of the stone throwing ship;

(1.3) the sleeve moves vertically downwards under the drive of the lifting mechanism, and ensures that the lower end of the sleeve extends out of the bottom of the stone throwing ship; then, under the drive of the lifting mechanism, the guiding pipe is lowered;

(1.4) then, through the cooperation of the first hydraulic oil cylinder, the pushing block and the first bottom plate, the first bottom plate rotates upwards around the base, and the distance between the bottom end of the guide pipe and the pile foundation is further shortened;

(1.5) then the piston rod of the second hydraulic cylinder extends out, and the second bottom plate is lifted and supported through the first limiting plate;

(1.6) under the drive of the DP dynamic positioning system of the stone throwing ship, the stone throwing ship drives the guide pipe to horizontally rotate around the pile foundation, and then the stone throwing operation is carried out on the position close to the pile foundation through the guide pipe;

(2) Performing stone throwing operation around pile foundation

(2.1) after the stone throwing operation on the pile foundation is completed, the piston rod of the first hydraulic oil cylinder is retracted, so that the first bottom plate is horizontally supported on the deck of the stone throwing ship again, and the guide pipe is ensured to be in a vertical state;

(2.2) then retracting and adjusting the piston rod of the second hydraulic cylinder, and ensuring that the second bottom plate is limited and lifted by the first limiting plate;

(2.3) then driving the stone throwing ship to drive the guide pipe to horizontally rotate around the pile foundation under the drive of the DP dynamic positioning system of the stone throwing ship, and further carrying out stone throwing operation on the periphery of the pile foundation through the guide pipe;

(3) The sea cable is subjected to stone throwing operation

(3.1) after the stone throwing operation on the periphery of the pile foundation is completed, the sleeve and the guide pipe vertically upwards move to the upper part of the second bottom plate under the driving of the lifting mechanism and the lifting mechanism;

(3.2) then driving the guide pipe to move horizontally to the center of the deck of the stone throwing ship along with the second bottom plate by the moving mechanism, and ensuring that the guide pipe and the guide hole are coaxially arranged; simultaneously, the piston rod of the second hydraulic oil cylinder is completely retracted;

(3.3) the sleeve moves vertically downwards under the drive of the lifting mechanism, and ensures that the lower end of the sleeve extends out of the bottom of the stone throwing ship through the guide hole; then, under the drive of the lifting mechanism, the guiding pipe is lowered;

and (3.4) carrying out stone throwing operation on the submarine cable through the guide pipe under the drive of the stone throwing ship.

The invention has the beneficial effects that:

(1) The invention can perform ordered stone throwing operation on the position close to the pile foundation, around the pile foundation and on the sea cable, avoids the phenomenon that the graded stone floats along with ocean currents in the throwing and filling process, thereby realizing omnibearing scour prevention construction operation, improving construction efficiency and saving construction cost;

(2) According to the invention, through the cooperation of the lifting mechanism, the sleeve, the lifting mechanism and the guide pipe, the marine cable is convenient to carry out stone throwing operation;

(3) According to the invention, the guide pipe can be horizontally moved to one side of the ship side and then lowered by arranging the moving mechanism, so that the stone throwing operation on the periphery of the pile foundation is facilitated, and the construction quality is improved;

(4) According to the invention, through the cooperation of the first hydraulic oil cylinder, the pushing block and the first bottom plate, the first bottom plate can rotate upwards around the base, so that the distance between the bottom end of the guide pipe and the pile foundation is shortened, the stone throwing operation is convenient to be carried out at the position close to the pile foundation, and the construction quality is improved;

(5) According to the invention, the automatic propeller assembly is arranged to drive the third frame to rotate around the guide pipe, so that the displacement compensation of the guide pipe is realized, and the construction quality is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an omnibearing anti-scour construction system for an offshore wind power foundation.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

FIG. 3 is a schematic view of B-B in FIG. 2.

Fig. 4 is a schematic structural view of a portion of the moving mechanism in fig. 1.

Fig. 5 is a schematic view of C-C in fig. 4.

Fig. 6 is a schematic view of the engagement portion of the first hydraulic ram and the first base plate of fig. 1.

Fig. 7 is a schematic view showing a state of the invention in which the submarine cable is riprapped.

FIG. 8 is a schematic view showing a state of the invention in which the periphery of the pile foundation is thrown.

FIG. 9 is a schematic diagram showing the state of the invention in which the stone is thrown against the pile foundation.

Wherein, 1-the stone throwing ship; 2-a first base plate; 3-a base; 4-a first hydraulic cylinder; 5-pushing blocks; 6-a moving mechanism; 7-a second hydraulic cylinder; 8-a first limiting plate; 9-I-steel; 10-sleeve; 11-connecting plates; 12-a first frame; 13-a first rack; 14-a first roller; 15-a first motor; 16-a first gear; 17-a first spindle; 18-a first pushing roller; 19-a first roller seat; 20-pulley block; 21-a roller; 22-roller support; 23-wire rope; 24-limiting rings; 25-reinforcing plates; 26-a second frame; 27-lifting lugs; 28-a second pushing roller; 29-a third frame; 30-an automatic propeller assembly; 31-a guide tube; 61-a second floor; 62-a first slide rail; 63-a second motor; 64-a first slider; 65-a second gear; 66-a second rack; 67-rack mount; 68-balancing weight; 69-a second limiting plate.

Detailed Description

The technical scheme of the present invention will be clearly and completely described in the following detailed description.

The invention relates to an omnibearing anti-scouring construction system for an offshore wind power foundation, which comprises a stone throwing ship 1, a first bottom plate 2, an adjusting mechanism, a moving mechanism 6, a second bottom plate 61, a lifting mechanism, I-steel 9, a sleeve 10 and a guide pipe 31; as shown in fig. 1-6, a first bottom plate 2 is further horizontally arranged in the middle position on the deck of the riprap ship 1, the left end of the first bottom plate 2 horizontally extends to the port side of the riprap ship 1, and the left end of the first bottom plate is turned upwards around the right end of the first bottom plate through an adjusting mechanism; the second bottom plate 61 and the first bottom plate 2 are horizontally arranged at intervals in parallel up and down, and the second bottom plate 61 horizontally moves on the first bottom plate 2 along the port-starboard direction through the moving mechanism 6; i-beams 9 are also vertically and symmetrically arranged at intervals along the port-starboard direction at the middle position of the upper surface of the second bottom plate 61, a sleeve 10 is also vertically and alternately arranged between the two I-beams 9, the sleeve 10 vertically moves up and down along the two I-beams 9 through a lifting mechanism, and when the sleeve 10 vertically moves to a lower limit position, the lower end of the sleeve 10 extends out of the bottom of the riprap boat 1; guide pipes 31 are further arranged in the sleeve 10 at intervals along the same axis, and the guide pipes 31 vertically move up and down along the sleeve through the lifting mechanism and are matched with the moving mechanism 6 and the adjusting mechanism to orderly perform stone throwing operation on the pile foundation, the periphery of the pile foundation and the submarine cable.

The length of the second bottom plate 61 in the left-right direction is smaller than that of the first bottom plate 2, and the moving mechanism 6 comprises a first sliding rail 62, a second motor 63, a first sliding block 64, a second gear 65, a second rack 66, a rack mounting seat 67, a balancing weight 68, a second limiting plate 69, a second hydraulic cylinder 7 and a first limiting plate 8; as shown in fig. 4 and 5, two first slide rails 62 are further horizontally arranged on the upper surface of the first bottom plate 2 at intervals along the head-to-tail direction, each first slide rail 62 is horizontally arranged along the port-starboard direction of the stone throwing ship 1, and the lengths of the first slide rails are consistent with the lengths of the first bottom plate 2 in the left-to-right direction and are respectively and fixedly arranged at corresponding positions on the upper surface of the first bottom plate 2; a second rack 66 is arranged at the outer side of one of the first slide rails 62 at horizontal parallel intervals, the length of the second rack 66 is consistent with that of the corresponding first slide rail 62, the tooth surface of the second rack 66 is horizontally arranged towards the direction corresponding to the first slide rail 62, a rack mounting seat 67 is also arranged on the lower surface of the second rack 66, and the second rack is fixedly arranged at the corresponding position of the upper surface of the first bottom plate 2 through the rack mounting seat 67; the second bottom plate 61 is horizontally arranged right above the two first slide rails 62 at intervals, two first slide blocks 64 are also horizontally arranged on the lower surface of the second bottom plate at intervals along the head-to-tail direction, each first slide block 64 is of a strip structure matched with the corresponding first slide rail 62, the second bottom plate is horizontally arranged along the port-starboard direction of the stone throwing ship 1, and the distance between the two first slide blocks 64 corresponds to the distance between the two first slide rails 62; the second bottom plate 61 is sleeved on the corresponding two first slide rails 62 through the first slide blocks 64, and horizontally reciprocates on the corresponding two first slide rails 62 along the port and starboard directions through the first slide blocks 64;

As shown in fig. 4 and 5, two second motors 63 are vertically arranged on the upper surface of the second bottom plate 61 at a side close to the second rack 66 at intervals in sequence in the port-starboard direction, and the actions of the two second motors 63 are synchronous; each second motor 63 is respectively in threaded connection and fixed with the upper surface of the second bottom plate 61, and the output end of each second motor vertically extends downwards to the lower surface of the second bottom plate 61 and is respectively in meshed connection with a second rack 66 through a second gear 65; wherein, each second gear 65 is arranged in a non-interfering manner with the corresponding first sliding block 64. The second bottom plate 61 horizontally reciprocates in the port and starboard direction and horizontally extends out of the port side of the riprap 1 through the meshing and matching of the second gear 65 and the second rack 66 under the drive of the second motor 63.

As shown in fig. 4 and 5, two second hydraulic cylinders 7 are embedded and arranged at the port side surface of the stone throwing ship 1 at an inclined interval along the head-tail direction relative to the position of the moving mechanism 6, the fixed end of each second hydraulic cylinder 7 is respectively embedded and arranged at the corresponding position inside the stone throwing ship 1, and the piston rod of each second hydraulic cylinder 7 is respectively inclined upwards towards the direction of the second bottom plate 61 to extend out of the stone throwing ship 1 and is respectively in threaded connection with the corresponding first limiting plate 8; each first limiting plate 8 is of an L-shaped structure, the horizontal edge of each first limiting plate is arranged towards the center direction of the stone throwing ship 1, the lower surface of the horizontal edge of each first limiting plate 8 is respectively in threaded connection and fixation with a piston rod of a corresponding second hydraulic oil cylinder 7, the surface of the horizontal edge of each first limiting plate is respectively in abutting fit with the corresponding position of the lower surface of a corresponding second bottom plate 61, the first limiting plates are respectively arranged in a non-interference manner with a corresponding first sliding block 64, and further lifting and supporting are respectively carried out when the corresponding second bottom plate 61 extends out of the port side of the stone throwing ship 1; the vertical edge of each first limiting plate 8 is upward and respectively abuts against and is attached to the corresponding side surface of the corresponding second bottom plate 61, so that limiting is performed when the corresponding second bottom plate 61 extends out of the port side of the riprap 1.

The length of each first sliding block 64 is larger than the distance that the second bottom plate 61 extends out of the port side of the riprap 1, and the right half part of the second bottom plate 61 is still connected with the corresponding first sliding rail 62 through the first sliding blocks 64 when the guide pipe 31 is lowered from the port side of the riprap 1; as shown in fig. 4 and 5, a second limiting plate 69 is further vertically fixed on the upper surface of the first bottom plate 2 toward the right, the second limiting plate 69 does not interfere with the movement of the adjusting mechanism, and the second limiting plate 69 limits the horizontal movement of the second bottom plate 61 toward the starboard direction; a counterweight 68 is further fixedly provided on the upper surface of the second bottom plate 61 near the right end thereof, and the counterweight 68 is disposed at a distance from the corresponding i-beam 9, and ensures that the second bottom plate 61 will not be separated from the moving mechanism 6 when the guide pipe 31 is lowered from the left outboard side of the riprap 1.

The adjusting mechanism comprises a first hydraulic cylinder 4, a pushing block 5, a base 3 and a second rotating shaft; as shown in fig. 1 and 6, the right end of the first bottom plate 2 extends horizontally in the starboard direction of the riprap 1 and does not extend to the starboard side of the riprap 1; the front and rear outer sides of the right end of the first bottom plate 2 are respectively provided with a base 3, each base 3 is vertically and fixedly connected with a corresponding position of a deck of the stone throwing ship 1, and a second rotating shaft horizontally sequentially penetrates through the two bases 3 and the first bottom plate 2 along the direction vertical to the port and starboard, so that the first bottom plate 2 is vertically and rotatably connected with the corresponding base 3; the front and rear outer sides of the left end of the first bottom plate 2 are respectively provided with a first hydraulic cylinder 4, and the actions of the two first hydraulic cylinders 4 are synchronous; each first hydraulic cylinder 4 is horizontally arranged along the direction vertical to the port and starboard, the tail part of each first hydraulic cylinder 4 is respectively fixed at a corresponding position on the deck of the stone throwing ship 1, no interference is generated to the horizontal movement of the second bottom plate 61, and the piston rod of each first hydraulic cylinder 4 is horizontally arranged towards the direction of the first bottom plate 2 and is respectively screwed and fixed with the corresponding pushing block 5; each pushing block 5 is of a right-angle triangle structure, inclined planes of the pushing blocks are arranged towards the first bottom plate 2, triangular grooves matched with the pushing blocks 5 are respectively embedded into the outer side face of the first bottom plate 2 relative to the corresponding pushing blocks 5, and then the first bottom plate 2 vertically rotates upwards around the base 3 under the driving of the first hydraulic oil cylinder 4 through the matching of the pushing blocks 5 and the triangular grooves, so that the guide pipe 31 is driven to rotate, and the distance between the bottom end of the guide pipe 31 and a pile foundation is adjusted.

The invention also vertically penetrates through the coaxial center at the position of the stone throwing ship 1 relative to the sleeve 10 to form a guide hole matched with the sleeve 10, and the guide hole vertically extends upwards to extend out of the upper surface of the second bottom plate 61, and does not influence the rest of the stone throwing ship 1 on the sea surface near the pile foundation; as shown in fig. 1 to 6, the length of the sleeve 10 is matched with the length of the corresponding i-steel 9, and the length of the sleeve needs to ensure that the sleeve 10 is completely recovered above the second bottom plate 61 when the sleeve 10 moves vertically to the upper limit position, and no interference is generated to the horizontal movement of the second bottom plate 61.

The lifting mechanism comprises a first frame 12, a first rotating shaft 17, a first roller 14, a first rack 13, a first motor 15, a first gear 16 and a connecting plate 11; as shown in fig. 1-3, two first racks 13 are symmetrically and vertically welded on the inner bottom surface of one side of each i-steel 9, which is close to the sleeve 10, along the length direction of the inner bottom surface, and the tooth surface of each first rack 13 is arranged in a direction away from the sleeve 10; two first frames 12 are respectively arranged at the left side and the right side of the upper end of the sleeve 10 close to one side corresponding to the I-steel 9 at intervals up and down, each first frame 12 is of a U-shaped structure matched with the I-steel 9, both ends of the first frame are folded inwards, and the inner folded edges are respectively sleeved at one end of the corresponding I-steel 9 close to the sleeve 10 at intervals; two first rollers 14 are horizontally arranged between the inner bottom surface of one side of each first frame 12 close to the sleeve 10 and the corresponding I-steel 9 at intervals along the head-to-tail direction, the rolling direction of each first roller 14 is consistent with the length direction of the corresponding I-steel 9, and the first rollers are respectively connected with the front side surface and the rear side surface of the corresponding first frame 12 in a rotating way through a first rotating shaft 17 and are respectively in rolling fit with the corresponding I-steel 9 and the inner bottom surface of one side of the corresponding first frame 12 close to the sleeve 10;

As shown in fig. 1 to 3, the front and rear outer side surfaces of each first frame 12 are respectively and horizontally symmetrically provided with a first motor 15 at a position corresponding to the first rack 13, and the actions of each first motor 15 are synchronous; the output end of each first motor 15 extends vertically to the inside of the corresponding first frame 12 and is in meshed connection with the corresponding first rack 13 through a first gear 16; the outer bottoms of the two first frames 12 on each side are respectively and vertically attached with connecting plates 11, the sleeves 10 are respectively connected with the corresponding first frames 12 through the connecting plates 11, and then under the drive of the first motor 15, the sleeves 10 vertically reciprocate up and down along the length direction of the I-steel 9 through the meshing fit of the first gear 16 and the first rack 13.

According to the invention, 2 layers of limiting assemblies are arranged between the sleeve 10 and the guide tube 31 at intervals up and down by the top end of the sleeve, each limiting assembly is used for radially limiting the descending action of the guide tube 31, and each limiting assembly comprises a first pushing roller 18 and a first roller seat 19; as shown in fig. 1 and 2, four first roller seats 19 are uniformly distributed and spaced along the circumferential direction of the inner circumferential surface of the sleeve 10 relative to each layer of limiting assembly, and a first pushing roller 18 is rotatably connected to one side of each first roller seat 19, which is close to the guide tube 31; the rotation direction of each first pushing roller 18 is consistent with the vertical movement direction of the guide tube 31, and then the downward movement of the guide tube 31 is radially limited by the abutting contact between the first pushing rollers 18 and the corresponding positions of the outer circumferential surface of the guide tube 31.

The lifting mechanism does not interfere the action of the limiting component, and comprises a roller 21, a roller bracket 22, a pulley block 20, a second frame 26, a lifting lug 27, a steel wire rope 23, a second pushing roller 28, a second roller seat, a fixed plate, a reinforcing plate 25 and a limiting ring 24; as shown in fig. 1 to 4, the outer circumferential surface of the bottom end of the guide tube 31 is also coaxially sleeved and fixed with a second frame 26, and the area of the second frame 26 is smaller than the internal sectional area of the sleeve 10, and no interference is generated to the lowering action of the guide tube 31 along the sleeve 10; second roller seats are sequentially arranged at intervals around the second frame 26, a second pushing roller 28 is rotatably connected to one side of each second roller seat, which is close to the sleeve 10, and the rotation direction of each second pushing roller 28 is consistent with the vertical movement direction of the guide tube 31, so that the downward movement of the guide tube 31 is radially limited through the abutting contact between the second pushing roller 28 and the corresponding position of the inner circumferential surface of the sleeve 10;

as shown in fig. 1-4, lifting lugs 27 are also vertically and symmetrically welded on the upper surface of the second frame 26 in a rectangular shape, each lifting lug 27 is respectively arranged right below a position between two adjacent first pushing rollers 18, pulley blocks 20 are respectively arranged on the upper surface of each i-steel 9 relative to the lifting lugs 27, and each pulley block 20 is respectively fixedly arranged at a corresponding position on the upper surface of the corresponding i-steel 9 through a fixing plate and is respectively vertically and rotatably connected with the corresponding i-steel 9 along the radial direction of the sleeve 10; a plurality of reinforcing plates 25 are vertically arranged between the lower surface of the part, extending out of the corresponding I-steel 9, of each pulley block 20 and the corresponding I-steel 9, and the corresponding pulley blocks 20 are reinforced and supported through the reinforcing plates 25; a plurality of limiting rings 24 are sequentially arranged on the inner circumferential surface of the sleeve 10 at intervals along the length direction of the sleeve relative to the position of the corresponding lifting lug 27, and the limiting rings 24 of each layer are horizontally arranged along the circumferential direction of the sleeve 10 and are respectively arranged in a non-interference manner with the guide tube 31, so that the steel wire rope 23 is limited by the limiting rings 24; the outer side surface of the upper end of each I-steel 9 is also respectively provided with a roller bracket 22 relative to the position of the corresponding pulley block 20, each roller bracket 22 is also respectively and vertically provided with a roller 21, each roller 21 is respectively and vertically rotatably connected with the corresponding roller bracket 22 along the radial direction of the sleeve 10, one end of each steel wire rope 23 is respectively and fixedly connected with the second frame 26 through a lifting lug 27, the other end of each steel wire rope 23 respectively passes through the corresponding limiting ring 24 in sequence and bypasses the corresponding pulley block 20, and then is respectively and vertically connected onto the corresponding roller 21 in a winding manner, and then the steel wire rope 23 is pulled by rotating the roller 21 to drive the guide pipe 31 to vertically move up and down along the sleeve.

The invention also has a third frame 29 sleeved on the outer circumference of the bottom end of the guide tube 31 in a coaxial manner, as shown in fig. 1 and 4, the third frame 29 is arranged right below the second frame 26 at intervals, is rotationally connected with the guide tube 31, and does not interfere the stone throwing action of the guide tube 31; the area of the third frame 29 is smaller than the internal cross-sectional area of the sleeve 10, so that no interference is generated to the lowering action of the guide tube 31 along the sleeve 10; the automatic propeller assemblies 30 are sequentially arranged around the third frame 29 at intervals, and the third frame 29 rotates around the guide tube 31 under the drive of the automatic propeller assemblies 30, so that displacement compensation is performed on the guide tube 31.

The invention discloses a construction method of an omnibearing anti-scouring construction system for an offshore wind power foundation, which is shown in figures 7-9 and comprises the following steps of:

(1.1) the stone throwing ship 1 enters the ground to rest at the pile foundation;

(1.2) the guide pipe 31 is horizontally moved to the port outside of the riprap boat 1 along with the second bottom plate 61 by the driving of the moving mechanism 6;

(1.3) the sleeve 10 moves vertically downwards under the drive of the lifting mechanism and ensures that its lower end extends out of the bottom of the riprap 1; then, the guide tube 31 is lowered under the drive of the lifting mechanism;

(1.4) then, through the cooperation of the first hydraulic oil cylinder 4, the pushing block 5 and the first bottom plate 2, the first bottom plate 2 rotates upwards around the base 3, so that the distance between the bottom end of the guide pipe 31 and the pile foundation is pulled;

(1.5) then the piston rod of the second hydraulic cylinder 7 extends out, and the second bottom plate 61 is lifted and supported by the first limiting plate 8;

(1.6) under the drive of the DP dynamic positioning system of the stone throwing ship 1, the stone throwing ship 1 drives the guide pipe 31 to horizontally rotate around the pile foundation, and then the stone throwing operation is carried out on the position close to the pile foundation through the guide pipe 31.

(2) Performing stone throwing operation around pile foundation

(2.1) after the stone throwing operation on the pile foundation is completed, the piston rod of the first hydraulic oil cylinder 4 is retracted, so that the first bottom plate 2 is horizontally supported on the deck of the stone throwing ship 1 again, and the guide pipe 31 is ensured to be in a vertical state;

(2.2) then the piston rod of the second hydraulic cylinder 7 is retracted and adjusted, and the second bottom plate 61 is ensured to be limited and lifted and supported by the first limiting plate 8;

and (2.3) then, under the drive of the DP dynamic positioning system of the riprap boat 1, the riprap boat 1 drives the guide pipe 31 to horizontally rotate around the pile foundation, and further carries out the riprap operation on the periphery of the pile foundation through the guide pipe 31.

(3) The sea cable is subjected to stone throwing operation

(3.1) after the stone throwing operation around the pile foundation is completed, the sleeve and the guide tube 31 vertically move upwards to the upper side of the second bottom plate 61 under the driving of the lifting mechanism and the lifting mechanism;

(3.2) then, driven by the moving mechanism 6, the guide tube 31 is horizontally moved to the center position of the deck of the stone throwing ship 1 along with the second bottom plate 61, and it is ensured that the guide tube 31 is coaxially disposed with the guide hole; while the piston rod of the second hydraulic cylinder 7 is fully retracted;

(3.3) the sleeve 10 moves vertically downwards under the drive of the lifting mechanism, and ensures that the lower end of the sleeve extends out of the bottom of the riprap 1 through the guide hole; then, the guide tube 31 is lowered under the drive of the lifting mechanism;

(3.4) the marine cable is subjected to a riprap operation by the guide pipe 31 under the drive of the riprap boat 1.

The invention has the beneficial effects that:

(2) According to the invention, through the cooperation of the lifting mechanism, the sleeve 10, the lifting mechanism and the guide pipe 31, the marine cable is conveniently subjected to stone throwing operation;

(3) According to the invention, the guide pipe 31 can be horizontally moved to the side of the ship side and then lowered by arranging the moving mechanism 6, so that the stone throwing operation on the periphery of the pile foundation is facilitated, and the construction quality is improved;

(4) According to the invention, through the cooperation of the first hydraulic oil cylinder 4, the pushing block 5 and the first bottom plate 2, the first bottom plate 2 can rotate upwards around the base 3, so that the distance between the bottom end of the guide pipe 31 and the pile foundation is shortened, the stone throwing operation is convenient for the pile foundation leaning place, and the construction quality is improved;

(5) According to the invention, the automatic propeller assembly 30 is arranged to drive the third frame 29 to rotate around the guide tube 31, so that the displacement compensation of the guide tube 31 is realized, and the construction quality is improved.

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the present invention is not limited to the above embodiments, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention should fall within the protection scope of the present invention, and the claimed technical content of the present invention is fully described in the claims.

Claims

1. An all-round scour protection construction system that marine wind power basis was used which characterized in that: comprises a stone throwing ship, a first bottom plate, an adjusting mechanism, a moving mechanism, a second bottom plate, a lifting mechanism, I-steel, a sleeve and a guide pipe; a first bottom plate is horizontally arranged in the middle position on the deck of the stone throwing ship, the left end of the first bottom plate horizontally extends to the port side of the stone throwing ship, and the left end of the first bottom plate is turned upwards around the right end of the first bottom plate through an adjusting mechanism; the second bottom plate and the first bottom plate are horizontally arranged at intervals in parallel up and down, and the second bottom plate horizontally moves on the first bottom plate along the port-starboard direction through a moving mechanism; i-steel is arranged in the middle of the upper surface of the second bottom plate at vertical intervals along the port-starboard direction, a sleeve is arranged between the two I-steel at vertical intervals, the sleeve vertically moves up and down along the two I-steel through a lifting mechanism, and when the sleeve vertically moves to a lower limit position, the lower end of the sleeve extends out of the bottom of the stone throwing ship; guide pipes are arranged in the sleeve at intervals along the same axis, vertically move up and down along the sleeve through the lifting mechanism, are matched with the moving mechanism and the adjusting mechanism, and sequentially perform orderly stone throwing operation on the pile foundation, the periphery of the pile foundation and the submarine cable;

2. The omnibearing anti-scour construction system for an offshore wind power foundation according to claim 1, wherein: the moving mechanism further comprises a second hydraulic cylinder, a first limiting plate, a balancing weight and a second limiting plate; the length of each first sliding block is larger than the distance that the second bottom plate extends out of the port side of the stone throwing ship, and the right half part of the second bottom plate is still connected with the corresponding first sliding rail through the first sliding blocks when the guide pipe is lowered from the port side of the stone throwing ship; a second limiting plate is further vertically and fixedly arranged on the upper surface of the first bottom plate close to the right side, the second limiting plate does not interfere with the action of the adjusting mechanism, and the second limiting plate limits the movement of the second bottom plate horizontally towards the starboard direction; a balancing weight is fixedly arranged on the upper surface of the second bottom plate near the right end of the second bottom plate, the balancing weight and the corresponding I-steel are arranged at intervals, and the second bottom plate is prevented from being separated from the moving mechanism when the guide pipe is lowered from the left outboard side of the stone throwing ship; the left side surface of the stone throwing ship is also embedded with two second hydraulic cylinders at intervals in an inclined way along the head-to-tail direction relative to the position of the moving mechanism, the fixed end of each second hydraulic cylinder is respectively embedded with the corresponding position inside the stone throwing ship, and the piston rod of each second hydraulic cylinder is respectively inclined upwards towards the direction of the second bottom plate to extend out of the stone throwing ship and is respectively in threaded connection with the corresponding first limiting plate; each first limiting plate is of an L-shaped structure, the horizontal edge of each first limiting plate is arranged towards the center of the stone throwing ship, the lower surface of the horizontal edge of each first limiting plate is respectively in threaded connection and fixation with a piston rod of a corresponding second hydraulic oil cylinder, the surface of the horizontal edge of each first limiting plate is respectively in abutting fit with the corresponding position of the lower surface of a corresponding second bottom plate, the first limiting plates are respectively arranged in a non-interference manner with the corresponding first sliding blocks, and then lifting and supporting are carried out when the corresponding second bottom plate extends out of the left side of the stone throwing ship; the vertical edges of the first limiting plates are upwards arranged and respectively abutted against and attached to the corresponding side surfaces of the second bottom plates, so that limiting is carried out when the corresponding second bottom plates extend out of the left side of the stone throwing ship.

3. The omnibearing anti-scour construction system for an offshore wind power foundation according to claim 1, wherein: the adjusting mechanism comprises a first hydraulic oil cylinder, a pushing block, a base and a second rotating shaft; the right end of the first bottom plate horizontally extends towards the starboard direction of the riprap and does not extend to the starboard side of the riprap; the front and rear outer sides of the right end of the first bottom plate are respectively provided with a base, each base is vertically and fixedly connected with a corresponding position of a deck of the stone throwing ship, the second rotating shaft horizontally penetrates through the two bases and the first bottom plate in sequence along the direction perpendicular to the port and starboard, and the first bottom plate is vertically and rotatably connected with the corresponding base; the front and rear outer sides of the left end of the first bottom plate are respectively provided with a first hydraulic oil cylinder, and the actions of the two first hydraulic oil cylinders are synchronous; each first hydraulic cylinder is horizontally arranged along the direction vertical to the port and starboard, the tail part of each first hydraulic cylinder is respectively fixed at a corresponding position on the deck of the stone throwing ship, no interference is generated to the horizontal movement of the second bottom plate, and the piston rod of each first hydraulic cylinder is horizontally arranged towards the direction of the first bottom plate and is respectively in threaded connection and fixed with the corresponding pushing block; each pushing block is of a right-angle triangle structure, inclined planes of the pushing blocks are arranged towards the first bottom plate, triangular grooves matched with the pushing blocks are respectively embedded into the outer side faces of the first bottom plate relative to the positions of the corresponding pushing blocks, and then the distance between the bottom ends of the guide pipes and pile foundations is adjusted by the fact that the pushing blocks are matched with the triangular grooves, the first bottom plate vertically rotates upwards around the base under the driving of the first hydraulic oil cylinder, and the guide pipes are driven to rotate.

4. The omnibearing anti-scour construction system for an offshore wind power foundation according to claim 1, wherein: a guide hole matched with the sleeve is vertically and coaxially formed in the position of the stone throwing ship relative to the sleeve, and the guide hole vertically extends upwards out of the upper surface of the second bottom plate and does not affect the fact that the stone throwing ship is parked on the sea surface near the pile foundation; the length of the sleeve is matched with the length of the corresponding I-steel, and when the sleeve needs to be ensured to vertically move to the upper limit position, the sleeve is completely recovered above the second bottom plate, and no interference is generated to the horizontal movement of the second bottom plate.

5. The omnibearing anti-scour construction system for an offshore wind power foundation according to claim 1, wherein: the lifting mechanism comprises a first frame, a first rotating shaft, a first roller, a first rack, a first motor, a first gear and a connecting plate; the inner bottom surface of one side of each I-shaped steel close to the sleeve is also provided with two first racks in a vertically welding way along the length direction, and the tooth surface of each first rack is arranged in a direction away from the sleeve; two first frames are respectively arranged at the left side and the right side of the upper end of the sleeve at intervals up and down and close to one side corresponding to the I-steel, each first frame is of a U-shaped structure matched with the I-steel, both ends of each first frame are folded inwards, and the first frames are respectively sleeved at one end corresponding to the I-steel close to the sleeve at intervals through the inner folded edges; two first rollers are horizontally arranged between the inner bottom surface of one side of each first frame close to the sleeve and the corresponding I-steel at intervals along the head-to-tail direction, the rolling direction of each first roller is consistent with the length direction of the corresponding I-steel, the first rollers are respectively connected with the front side surface and the rear side surface of the corresponding first frame in a rotating way through first rotating shafts, and the first rollers are respectively in rolling fit with the corresponding I-steel and the inner bottom surface of one side of the corresponding first frame close to the sleeve; the front and rear outer side surfaces of each first frame are respectively and horizontally symmetrically provided with a first motor relative to the first rack, and the actions of each first motor are synchronous; the output end of each first motor vertically extends to the interior of the corresponding first frame and is in meshed connection with the corresponding first rack through a first gear; the two outer bottoms of the first frames on each side are respectively and vertically attached with connecting plates, the sleeves are respectively connected with the corresponding first frames through the connecting plates, and then under the driving of the first motor, the sleeves vertically reciprocate up and down along the length direction of the I-steel through the meshing fit of the first gear and the first rack.

6. The omnibearing anti-scour construction system for an offshore wind power foundation according to claim 1, wherein: 2 layers of limiting assemblies are arranged between the sleeve and the guide tube at intervals up and down by the top end of the sleeve, each limiting assembly is used for radially limiting the descending action of the guide tube, and each limiting assembly comprises a first pushing roller and a first roller seat; four first roller seats are uniformly distributed and spaced on the inner circumferential surface of the sleeve relative to the position of each layer of limiting assembly along the circumferential direction of the sleeve, and a first pushing roller is rotatably connected to one side of each first roller seat, which is close to the guide tube; the rotation direction of each first pushing roller is consistent with the vertical movement direction of the guide tube, and then the first pushing rollers are in contact with the corresponding positions of the outer circumferential surface of the guide tube in a propping manner, so that the lowering action of the guide tube is radially limited.

7. The omnibearing anti-scour construction system for an offshore wind power foundation according to claim 6, wherein: the lifting mechanisms do not interfere the action of the limiting assembly, and the lifting mechanisms comprise a roller, a roller bracket, a pulley block, a second frame, lifting lugs, a steel wire rope, a second pushing roller, a second roller seat, a fixed plate, a reinforcing plate and a limiting ring; the outer circumferential surface of the bottom end of the guide tube is also sleeved and fixed with a second frame in a coaxial manner, the area of the second frame is smaller than the internal sectional area of the sleeve, and the guide tube is not interfered with the descending action of the guide tube along the sleeve; the periphery of the second frame is also provided with second roller seats at intervals in sequence, one side of each second roller seat, which is close to the sleeve, is also rotationally connected with a second pushing roller, the rotation direction of each second pushing roller is consistent with the vertical movement direction of the guide tube, and the radial limiting is carried out on the lowering action of the guide tube through the abutting contact between the second pushing roller and the corresponding position of the inner circumferential surface of the sleeve; lifting lugs are further vertically and symmetrically welded on the upper surface of the second frame in a rectangular shape, each lifting lug is respectively arranged right below a position between two adjacent first pushing rollers, a pulley block is further respectively arranged on the upper surface of each I-steel corresponding to the lifting lug, and each pulley block is respectively fixedly arranged at a position corresponding to the upper surface of the I-steel through a fixing plate and is respectively connected with the corresponding I-steel in a vertical rotation mode along the radial direction of the sleeve; a plurality of limiting rings are sequentially arranged on the inner circumferential surface of the sleeve at intervals along the length direction of the sleeve relative to the position of the corresponding lifting lug, and each layer of limiting rings are horizontally arranged along the circumferential direction of the sleeve and are respectively arranged in a non-interference manner with the guide tube, so that the steel wire rope is limited through the limiting rings; the upper end lateral surface of each I-steel still is equipped with the cylinder support respectively for corresponding assembly pulley position department, and each still vertically is equipped with the cylinder on the cylinder support respectively, each the cylinder is radially along the sleeve respectively with correspond the vertical rotation of cylinder support is connected, and each wire rope's one end respectively through the lug with second frame fixed connection, and the other end respectively pass corresponding spacing ring in proper order, after bypassing corresponding assembly pulley respectively, respectively the wiring is on corresponding cylinder, and then pulls wire rope through rotating the cylinder, drives the stand pipe and carries out vertical up-and-down motion along the sleeve.

8. The omnibearing anti-scour construction system for an offshore wind power foundation according to claim 7, wherein: a third frame is sleeved on the outer circumferential surface of the bottom end of the guide pipe in a coaxial way, is arranged right below the second frame at intervals, is rotationally connected with the guide pipe, and does not interfere the stone throwing action of the guide pipe; the area of the third frame is smaller than the internal sectional area of the sleeve, so that the guiding pipe is not interfered with the descending action of the guiding pipe along the sleeve; the periphery of the third frame is also provided with automatic propeller components at intervals in sequence, and the third frame rotates around the guide pipe under the drive of the automatic propeller components, so that the guide pipe is subjected to displacement compensation.

9. The construction method of the omnibearing anti-scour construction system for the offshore wind power foundation according to any one of claims 1 to 8, characterized by comprising the following steps:

(2) Performing stone throwing operation around pile foundation

(3) The sea cable is subjected to stone throwing operation