Detachable pile gripper applied to ship moon pool and mounting and using method of detachable pile gripper

Abstract

The invention discloses a detachable pile gripper applied to a ship moon pool and a mounting and using method thereof.The detachable pile gripper comprises a pile gripping mechanism used for positioning a single pile foundation placed in the moon pool, a positioning guide frame and a control system, and the pile gripping mechanism is erected above the moon pool through the positioning guide frame; and the positioning guide frame is vertically fixed on a deck closest to the center of the ship body around the moon pool. Through the detachable modular design, the adaptability is high, different moon pool structure designs and various deck arrangements can be adapted, the pile gripper is detachably installed in the center of the ship, displacement caused by ship movement is effectively reduced, the installation efficiency and the cost effectiveness are improved, the carrying and assembling process is simplified, and the cost is reduced. Quick positioning, mounting and dismounting can be realized without additional equipment; in addition, the perpendicularity can be effectively controlled, the stability and safety of wind power single pile foundation construction are improved, the construction flexibility and the ship utilization rate are increased, and the limitation of installation and use of an existing pile gripper near a ship moon pool is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of wind power generation, and in particular relates to a detachable pile gripper applied to a moon pool of a ship and an installation and use method thereof. Background Art

[0002] At present, when it is necessary to carry out wind power monopile foundation construction on a floating ship, the pile gripper used is often installed on the stern or side of the crane ship, such as the Chinese invention application document "A Motion Compensation Pile Gripper for Installing Offshore Wind Power Monopile Foundation on a Floating Ship" with the existing publication number CN115748702A. The ship has rolling and pitching phenomena due to waves, wind or other external factors, which makes the lateral and longitudinal movement distances of the ship large. Although the motion compensation pile gripper performs motion compensation to a certain extent through the design of the motion compensation system when performing the piling operation of the monopile foundation, since the pile gripper is still arranged on the side of the ship, a large displacement will still be generated with the rolling and pitching phenomena, which will have an adverse effect on the driving stroke of the mechanism. In order to adapt to the large displacement, the pile gripper has to design a larger driving stroke, which makes the overall mechanism more complicated, increases the volume and weight, and also leads to high cost and low efficiency. Moreover, if it cannot respond in time, the large displacement will directly affect the adjustment efficiency of the verticality of the pile gripper, and then affect the accuracy and stability of the entire construction process.

[0003] At present, due to the differences in the layout requirements of different construction scenes, there are many types of offshore vessels in the offshore field with different forms. Among them, there are offshore vessels with a moon pool in the center of the ship. The moon pool generally starts from the bottom plate of the hull and goes up to the main deck, and is generally set in the center of the hull deck. The shape of the moon pool includes but is not limited to rectangular, circular or other irregular shapes. However, since the existing pile grippers often adopt an integrated structure, which is large in size and heavy in weight and difficult to carry, the bottom of the pile gripper is often directly fixed on the hull at the stern or side, so as to save the installation space on the hull deck as much as possible and avoid collisions with people and interference with other devices such as masts. However, this also leads to the fact that the traditional installation method of the pile gripper is not suitable for the special structure of the moon pool located in the center of the ship. Specifically, there are currently the following problems: Due to the special structure of the moonpool, existing pile grippers are difficult to adapt to the moonpool structure, especially when the shape of the moonpool on the deck is irregular, or when there is an equipment layout installed on the deck around the moonpool to serve other special operations, the installation space of the pile gripper will be further limited. The installation position of the pile gripper needs to be more precise to avoid damage to other structures of the ship; and the design of the moonpool itself running through the hull also puts higher requirements on the operation and stability of the pile gripper.

[0004] In summary, the existence of the above problems has led to the fact that when facing an offshore engineering vessel with a moon pool in the center of the ship, it is difficult to think of using the central moon pool of the ship for the construction of a wind turbine monopile foundation, and the various obstacles on the ship's hull deck and the walking passages of the staff on the deck are not taken into consideration. As a result, during the installation and use process, the structure and installation method of the existing pile gripper are not applicable, and it cannot be effectively fixed on the deck near the moon pool, thereby affecting the stability and safety of the wind turbine monopile foundation construction.

[0005] In order to solve the above problems, it is urgent to develop a detachable pile gripper that can adapt to the position and structure of the central moon pool of the ship. The detachable pile gripper is specially used for the position of the moon pool of the ship. Through modular design, it can be adjusted to different moon pools and installed in the center of the ship. Compared with installing it on the sides or stern of the ship, by setting it in the central position of the ship, the motion response of the ship under the action of marine environmental loads is compensated, and the displacement caused by the roll and pitch of the ship is significantly reduced, thereby making the driving stroke of the pile gripper shorter and the structure lighter, thereby improving the installation efficiency and cost-effectiveness, which is of great significance for improving the construction efficiency and safety of offshore wind power single pile foundations. Summary of the invention

[0006] In order to solve the problems existing in the prior art mentioned above, the object of the present invention is to provide a detachable pile gripper applied to a ship moon pool and an installation and use method thereof. The modular design makes it easy to carry and assemble, and can flexibly select components of appropriate sizes according to the prepared single pile and the determined ship moon pool. Without additional instruments and equipment, the pile gripper can be quickly positioned, installed and replaced in the middle of the ship hull at a certain distance from the moon pool, and can also adjust the position of existing obstacles on the hull deck. The pile gripper has wider versatility and is suitable for any existing deck layout and can be adaptively adjusted for any shape or design of the moon pool. At the same time, by arranging the pile gripper in the center of the ship, it can also play a role in compensating for the motion response of the ship under the action of the marine environment load, so that the driving stroke is smaller, the mechanism is lighter, and it has higher installation efficiency and cost-effectiveness, and finally achieves the effect of efficiently controlling the pile gripper to adjust the verticality of the steel pile. Moreover, it can ensure that the installation and adjustment process of the pile gripper is more stable and efficient in various complex marine environments, thereby improving the quality and safety of the entire wind power monopile foundation construction.

[0007] To achieve the above objectives and other related objectives, the present invention adopts the following technical solutions:

[0008] In a first aspect of the present invention, a detachable pile gripper for use in a moon pool of a ship is provided, comprising a pile gripper mechanism, a positioning guide frame and a control system, wherein the pile gripper mechanism is erected above the moon pool through the positioning guide frame and is used to position a single pile foundation placed in the moon pool; the positioning guide frame is detachably fixed vertically on a deck, and the center projection of the positioning guide frame falls on a deck position around the moon pool that is closest to the center of the hull; the positioning guide frame comprises a pair of vertical positioning guide rods and a transverse positioning guide rod;

[0009] The pile-holding mechanism comprises a main body, a connecting rod and a second laser emitter; an inner diameter adjustment mechanism is provided on the main body, which is connected to the control system signal and is used to adjust the inner diameter of the main body to match the outer diameter of the single pile foundation; the connecting rod is fixed to the rear side of the main body, so that the pile-holding mechanism can be detachably mounted vertically on the transverse positioning guide rod; the number of the connecting rods is at least two, and they are evenly distributed on the rear side of the main body; the second laser emitter is located at the center of the rear end of the main body and emits a vertically backward laser; a second positioning point is provided at the center of the front end of the transverse positioning guide rod; when the pile-holding mechanism is detachably fixed to the transverse positioning guide rod, the laser position emitted by the second laser emitter falls on the second positioning point;

[0010] The lower end of each pair of vertical positioning guide rods is provided with a deck base, which is detachably fixed vertically to the deck through the deck base; the deck base includes an upper flange plate, a lower flange plate and a base base; wherein the lower flange plate is fixed to the upper end of the base base, the base base is fixed to the deck and is provided with a first positioning point, and the upper flange plate is fixed to the lower end of the vertical positioning guide rod; the upper and lower flange plates are connected by bolts;

[0011] The pair of vertical positioning guide rods are each sleeved with an electric sliding sleeve, and the transverse positioning guide rod is detachably fixed between the two electric sliding sleeves, and the transverse positioning guide rod is sleeved with a positioning sliding sleeve, and the positioning sliding sleeve is fixed to the transverse positioning guide rod by a first fastener, and a longitudinal adjustment seat is fixed on the upper end surface of the positioning sliding sleeve, and a connecting groove is provided in the longitudinal adjustment seat, and the connecting groove vertically passes through the front and rear end surfaces of the longitudinal adjustment seat, and a second fastener is provided on the side wall of the longitudinal adjustment seat, and the connecting rod is passed through the connecting groove and locked and fixed, and the distance between the pile holding mechanism and the positioning guide frame can be adjusted by moving the connecting rod; the two electric sliding sleeves are both connected to the control system signal, and the two electric sliding sleeves are controlled to slide up and down synchronously to adjust the position of the pile holding mechanism;

[0012] A positioning base is provided at each end of the transverse positioning guide rod, and the positioning base is detachably fixed between the pair of vertical positioning guide rods, and a storage groove is provided at each end of the transverse positioning guide rod; the positioning base comprises an inner flange plate, a middle flange plate and an outer flange plate; wherein, a first laser emitter is provided on the inner side surface of the middle flange plate, and when the transverse positioning guide rod is placed on the deck, the laser position emitted by the first laser emitter falls on the first positioning point; the inner flange plate is fixed to the outer end surface of the transverse positioning guide rod, and a through groove connected to the storage groove is provided on the inner flange plate to form a storage space for accommodating and protecting the first laser emitter; the outer flange plate is fixed to the inner end surface of the electric sleeve; the inner flange plate is detachably fixed to the middle flange plate or the outer flange plate according to different operation modes, and the operation modes include storage mode, positioning auxiliary mode and assembly mode;

[0013] The first laser emitter and the second laser emitter are connected to the control system via signals, and the control system controls the switches of the first laser emitter and the second laser emitter.

[0014] Further, in the storage mode, the first laser emitter is located in the storage space inside the transverse positioning guide rod, and the middle flange plate is fixed to the inner flange plate with bolts;

[0015] In the positioning assistance mode, the first laser emitter is located outside the lateral positioning guide rod, the middle flange plate is fixed with bolts to the inner flange plate, and the laser emitted by the first laser emitter is vertically directed to the rear;

[0016] In the assembly mode, the inner flange plate is fixed to the outer flange plate by bolts, so that the transverse positioning guide rod is vertically fixedly connected to the vertical positioning guide rod.

[0017] Furthermore, the inner flange plate includes a vertical plate and a horizontal plate, the through slot is opened on the vertical plate, the horizontal plate is located at the lower end of the vertical plate, and the inner flange plate is L-shaped.

[0018] A second aspect of the present invention provides a method for installing and using a detachable pile gripper for a moon pool of a ship, comprising the following steps:

[0019] S1. Prepare a vessel with a moon pool and a detachable pile gripper according to the outer diameter of the monopile foundation;

[0020] S2, switching from the storage mode to the positioning auxiliary mode, and using the first laser emitter on the transverse positioning guide rod and the first positioning point on the deck base to determine the installation position of each vertical positioning guide rod, and fixing the deck base on the deck;

[0021] S3. The vertical positioning guide rods are detachably mounted on the deck through the deck base, so that the side of the electric sliding sleeve provided with the outer flange plate is arranged opposite to each other, the positioning auxiliary mode is switched to the assembly mode, and the transverse positioning guide rods are installed between the vertical positioning guide rods;

[0022] S4. Install the pile holding mechanism on the lateral positioning guide rod, adjust its position, ensure that the center line of the pile holding mechanism and the guide rod are aligned, and suspend it above the moon pool;

[0023] S5. Hoist the single pile foundation and adjust its position, and put the single pile foundation through the self-holding pile mechanism and into the moon pool;

[0024] S6. Perform pile sinking of the monopile foundation: allow the positioning sleeve to move freely within a certain range, and use the second laser transmitter and the second positioning point to monitor the rolling and pitching of the ship in real time. When the laser coincides with the second positioning point, use a pile hammer to sink the monopile foundation to the designed depth, ensuring that the upper end surface of the monopile foundation is not higher than the bottom of the ship;

[0025] S7, after the installation of the single pile foundation is completed, the ship moves to the next pile position, and steps S5 and S6 are repeated until the construction of all pile positions is completed; then, the pile holding mechanism and the positioning guide rod are removed, and the base is retained for next use;

[0026] If the outer diameter of a single pile changes and exceeds the adjustment range, the pile holding mechanism must be removed first, and then replaced with a pile holding mechanism of appropriate size, and then steps S5 to S7 are repeated to continue construction.

[0027] As a preferred technical solution, step S1 includes the following specific steps:

[0028] S1-1. Determine the vessel and pile-holding mechanism with a moon pool of appropriate size according to the outer diameter of the single pile foundation;

[0029] S1-2. Determine the length of the lateral positioning guide rod according to the distance between the two farthest connecting rods on the pile holding mechanism;

[0030] S1-3. Carry the detachable pile gripper onto the vessel.

[0031] As a preferred technical solution, step S2 includes the following specific steps:

[0032] S2-1, switch from the storage mode to the positioning auxiliary mode, remove the middle flange plate from the inner flange plates at both ends of the lateral positioning guide rod, turn the middle flange plate over and fasten it to both ends of the lateral positioning guide rod, so that the first laser emitter is located outside the lateral positioning guide rod;

[0033] S2-2, placing a transverse positioning guide rod on one side of the edge of the moon pool close to the center of the hull, controlling the first laser transmitter to turn on, and adjusting the placement position of the transverse positioning guide rod to adjust the direction of the laser emitted by the first laser transmitter;

[0034] S2-3. Determine and fix the position of the base according to the laser emitted by the first laser emitter and the first positioning point on the base, ensure that the laser irradiates the positioning point vertically, and make the distance between the base and the moon pool as short as possible without interference between the two bases.

[0035] Furthermore, the step S2-2 includes the following specific steps:

[0036] When the center of the hull falls within the range of the moon pool, the direction of the laser emitted by the first laser emitter is directed away from the center of the hull;

[0037] When the center of the hull falls outside the range of the moon pool, the direction of the laser emitted by the first laser transmitter is directed toward the center of the hull.

[0038] As a preferred technical solution, step S3 includes the following specific steps:

[0039] S3-1, by fastening the lower flange plate located on the base of the pedestal to the upper flange plate located at the lower end of the vertical positioning guide rod, the vertical positioning guide rod is vertically fixed on the deck, and the side of the electric sliding sleeve provided with the outer flange plate is arranged oppositely;

[0040] S3-2. Control the first laser emitter to turn off, remove the middle flange plates at both ends of the transverse positioning guide rod, lower the electric sleeve to the lowest point of the vertical positioning guide rod, and then fasten the inner flange plates at both ends of the transverse positioning guide rod to the outer flange plates respectively to ensure that the end of the transverse positioning guide rod with the second positioning point faces the moon pool.

[0041] As a preferred technical solution, step S4 includes the following specific steps:

[0042] S4-1, move the connection groove on the lateral positioning guide rod to the connection rod on the pile holding mechanism in sequence and insert it;

[0043] S4-2, turn on the second laser emitter, use the positioning sleeve to move the pile holding mechanism until the laser emitted by the second laser emitter is vertically irradiated on the second positioning point and fastened and fixed. At this time, the pile holding mechanism is located in the middle of the lateral positioning guide rod.

[0044] S4-3. Adjust the position of the pile-holding mechanism by adjusting the length of the connecting rod in the connecting groove until the pile-holding mechanism falls above the moon pool and is then fastened to avoid deviation during the forward and backward sliding process.

[0045] As a further preferred technical solution, step S5 includes the following specific steps:

[0046] S5-1, using the control system to control the inner diameter adjustment mechanism so that the inner diameter of the pile holding mechanism is larger than the outer diameter of the single pile foundation, and then hoisting the single pile foundation above the pile holding mechanism, lowering it to the lower end of the single pile foundation and passing through the pile holding mechanism;

[0047] S5-2. Use the control system to control the inner diameter adjustment mechanism to reduce the inner diameter of the pile holding mechanism until the inner diameter of the pile holding mechanism is slightly larger than the single pile foundation. Synchronously adjust the position of the single pile foundation to make it vertical and continue to lower it until it is in place. At this time, under the action of its own gravity, the single pile foundation sinks to a certain depth.

[0048] As described above, the present invention has the following beneficial effects:

[0049] (1) The present invention provides a detachable pile gripper for a moon pool of a ship and a method for installing and using the same. The detachable design allows the gripper to adapt to a ship type with a moon pool in the middle of the ship. The gripper not only has the function of adjusting the verticality of a single pile foundation as previously provided by the pile gripper, but can also efficiently control the pile gripper to adjust the verticality of a steel pile, thereby allowing a marine vessel with a moon pool to have more functions, thereby increasing the diversity of construction and operation functions of such a vessel type. The gripper also has a detachable function, and through a design that facilitates positioning, installation, and rapid disassembly, further expands the application scope of the vessel, and can ensure that the installation and positioning adjustment process of the pile gripper is more stable and efficient in various complex marine environments, thereby improving the quality and safety of the entire wind power single pile foundation construction, improving the flexibility of construction and the utilization rate of the ship, and being well adapted to the installation process of a marine vessel, having broad application prospects.

[0050] (2) The present invention discloses a detachable pile gripper for a moon pool of a ship and a method for installing and using the same. The pile gripper can be adjusted for different moon pools and installed in the center of the ship through modular design. By arranging the pile gripper in the center of the ship, the motion response of the ship under the action of marine environmental loads is compensated, and the displacement caused by the roll and pitch of the ship is significantly reduced, compared with the conventional pile gripper installed on the sides or stern of the ship. The driving stroke of the pile gripper is shorter and the structure is lighter, thereby improving the installation efficiency and cost-effectiveness. The problems of a large motion compensation range and the influence of the installation position on the length and width of the ship when the pile gripper is arranged on the side or stern of the ship in the past are solved. In addition, the modular design facilitates the transportation and assembly of the pile gripper, and the component structure of the appropriate size can be flexibly selected according to the prepared single pile and the determined moon pool of the ship. In addition, the pile gripper can be quickly positioned, installed and replaced at the middle position of the ship hull at a certain distance from the moon pool without the need for additional instruments and equipment. At the same time, the position can be adjusted according to the existing obstacles on the hull deck. The pile gripper has a wider versatility and is suitable for any existing deck arrangement and can be adaptively adjusted for any shape or design of moon pool. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 It is a schematic structural diagram of the transverse positioning guide rod provided with a horizontal plate in the storage mode in the present invention.

[0052] Figure 2 It is a structural schematic diagram of the transverse positioning guide rod provided with a horizontal plate in the positioning auxiliary mode in the present invention.

[0053] Figure 3 It is a front view of the positioning guide frame without the pile holding mechanism in the present invention.

[0054] Figure 4 It is a top view of the positioning guide frame in the present invention.

[0055] Figure 5 It is a schematic diagram of the installation and use of the present invention when the center of the hull falls within the range of the moon pool.

[0056] Figure 6 It is a schematic diagram of the installation and use of the present invention when the center of the hull falls outside the range of the moon pool.

[0057] Among them, the specific descriptions of the accompanying drawings are as follows: 1. Deck; 2. Moon pool; 3. Pile holding mechanism; 31. Main body; 32. Inner diameter adjustment mechanism; 321. Clamping part; 34. Second laser emitter; 35. Connecting rod; 4. Vertical positioning guide rod; 41. Electric sleeve; 5. Horizontal positioning guide rod; 51. Storage groove; 52. Positioning sleeve; 521. First fastener; 53. Longitudinal adjustment seat; 531. Connecting groove; 532. Second fastener; 54. Second positioning point; 6. Deck base; 61. Upper flange plate; 62. Lower flange plate; 63. Base base; 631. First positioning point; 7. Positioning base; 71. Inner flange plate; 711. Through groove; 72. Middle flange plate; 721. First laser emitter; 73. Outer flange plate; 9. Single pile foundation. DETAILED DESCRIPTION

[0058] In order to better understand the purpose, structure and function of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0059] In the description of the present invention, it should be noted that the positional relationships indicated by terms such as “longitudinal”, “lateral”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc. cited in this specification are based on the positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0060] Example 1

[0061] like Figures 1 to 6 As shown, this embodiment provides a detachable pile gripper for use in a moon pool of a ship, comprising a pile gripping mechanism 3, a positioning guide frame, and a control system. The pile gripping mechanism 3 is erected above the moon pool 2 via the positioning guide frame, and is used to position a single pile foundation placed in the moon pool 2. The positioning guide frame is detachably and vertically fixed on the deck 1, and the center projection of the positioning guide frame falls on the position of the deck 1 closest to the center of the hull around the moon pool 2.

[0062] The positioning guide frame includes a pair of vertical positioning guide rods 4 and a transverse positioning guide rod 5; the lower ends of the pair of vertical positioning guide rods 4 are each provided with a deck base 6, and the vertical positioning guide rods 4 are detachably fixed vertically to the deck 1 through the deck base 6; each of the pair of vertical positioning guide rods 4 is sleeved with an electric sleeve 41, and both electric sleeves 41 are connected to the control system signal, and the control system controls the two electric sleeves 41 to slide up and down synchronously along their respective corresponding vertical positioning guide rods 4, and the transverse positioning guide rod 5 is detachably fixed between the two electric sleeves 41, and the transverse positioning guide rod 5 is sleeved with a positioning sleeve 52, so The positioning sleeve 52 has a cross-sectional shape that matches the cross-sectional shape of the transverse positioning guide rod 5. The lower end surface of the positioning sleeve 52 is provided with a first fastening hole and is equipped with a first fastener 521. The positioning sleeve 52 is fixed to the transverse positioning guide rod 5 through the first fastener 521. The upper end surface of the positioning sleeve 52 is fixed with a longitudinal adjustment seat 53. The longitudinal adjustment seat 53 is provided with a connecting groove 531. The connecting groove 531 passes through the front end surface and the rear end surface of the longitudinal adjustment seat 53, and the connecting groove 531 is perpendicular to the plane where the positioning guide frame is located. The side wall of the longitudinal adjustment seat 53 is provided with a fastening hole and is equipped with a second fastener 532.

[0063] The deck base 6 includes an upper flange plate 61, a lower flange plate 62 and a base base 63; the lower flange plate 62 is fixed to the upper end surface of the base base 63, and a first positioning point 631 is provided on the base base 63. The position of the first positioning point 631 corresponds to the laser position emitted by the first laser emitter 721 when the transverse positioning guide rod 5 is placed on the deck 1, that is, the height of the first positioning point 631 is consistent with the distance from the center of the first laser emitter 721 to the lower end surface of the inner flange plate 71, and the first positioning point 631 to the outer flange plate 73 is consistent with the distance from the center of the first laser emitter 721 to the lower end surface of the inner flange plate 71. The distance between the end faces is consistent with the distance from the center of the first laser emitter 721 to the outer end face of the inner flange plate 71; the lower end of the base 63 is fixed on the deck 1, and the upper flange plate 61 is fixed to the lower end face of the vertical positioning guide rod 4; the lower flange plate 62 and the upper flange plate 61 are provided with matching first bolt holes, and are equipped with first flange bolts that can penetrate the upper flange plate 61 and the lower flange plate 62, and the lower flange plate 62 and the upper flange plate 61 are fastened and connected by the first flange bolts, so that the vertical positioning guide rod 4 is vertically fixed to the deck 1.

[0064] In this embodiment, the vertical positioning guide rod 4 adopts an existing electric guide rail equipped with an electric sleeve 41. The modification can be achieved by fixing the upper flange plate 61 at the center position of the lower end of the electric guide rail, and fixing the upper flange plate 61 at the center position of the lower end of the electric guide rail, and connecting the existing electric sleeve 41 to the control system through an electrical signal. During operation, the control system can control the electric sleeves 41 on the two electric guide rails to move up and down synchronously along the height direction of each electric guide rail and drive the pile holding mechanism 3 on the transverse positioning guide rod 5 to move up and down in a direction perpendicular to the deck 1, so as to adjust the position of the pile holding mechanism 3 on the single pile foundation and assist in pile delivery. Therefore, the structure of the vertical positioning guide rod 4 and the electric sleeve 41 will not be described in detail here.

[0065] A positioning base 7 is provided at each end of the transverse positioning guide rod 5 , and the transverse positioning guide rod 5 is detachably fixed between the pair of vertical positioning guide rods 4 through the positioning base 7 . A receiving groove 51 is provided at the middle position of each end of the transverse positioning guide rod 5 .

[0066] The positioning base 7 includes an inner flange plate 71, a middle flange plate 72 and an outer flange plate 73; a first laser emitter 721 is provided on the inner side surface of the middle flange plate 72; the inner flange plate 71 is fixed to the outer end surface of the transverse positioning guide rod 5, and a through groove 711 is opened on the inner flange plate 71, and the through groove 711 is connected with the storage groove 51 on the transverse positioning guide rod 5 to form a storage space for accommodating and protecting the first laser emitter 721, and the storage space has a shape matching the first laser emitter 721. When the transverse positioning guide rod 5 is placed on the deck 1, the laser position emitted by the first laser emitter 721 falls on the first positioning point 631; the outer flange plate 73 is fixed to the inner end surface of the electric sleeve 41 of the vertical positioning guide rod 4.

[0067] The inner flange plate 71, the middle flange plate 72 and the outer flange plate 73 are all provided with matching second bolt holes, and are equipped with second flange bolts that can penetrate the inner flange plate 71, the middle flange plate 72 and the outer flange plate 73; the inner flange plate 71 is detachably fixed to the middle flange plate 72 or the outer flange plate 73 according to different operation modes, and the different operation modes include storage mode, positioning auxiliary mode and assembly mode; in the storage mode, the first laser emitter 721 is located in the storage space on the inner side of the transverse positioning guide rod 5, and the middle flange plate 72 is fastened to the inner flange plate 71 by the second flange bolt; in the positioning auxiliary mode, the first laser emitter 721 is located on the outer side of the transverse positioning guide rod 5, and the middle flange plate 72 is fastened to the inner flange plate 71 by the second flange bolt. The inner flange plate 71 is bolted and connected to the inner flange plate 71, and the laser emitted by the first laser emitter 721 is vertically directed to the rear; in the assembly mode, the inner flange plate 71 and the outer flange plate 73 are bolted and connected by the second flange, so that the transverse positioning guide rod 5 is vertically fixedly connected to the vertical positioning guide rod 4; in another embodiment, the inner flange plate 71 includes a vertical plate and a horizontal plate, the through groove 711 is opened on the vertical plate, and the horizontal plate is located at the lower end of the vertical plate, so that the inner flange plate 71 is L-shaped, and the horizontal plate can make the transverse positioning guide rod 5 more stably erected on the deck 1 through the horizontal plate, ensuring the horizontality of the laser emitted by the first laser emitter 721, and the horizontal plate is toward the inner center of the transverse positioning guide rod 5.

[0068] The pile-holding mechanism 3 includes a main body 31 , a connecting rod 35 and a second laser emitter 34 .

[0069] The main body 31 is provided with an inner diameter adjustment mechanism 32, and the inner diameter adjustment mechanism 32 includes a plurality of movable telescopic rods, each of the inner ends of the movable telescopic rods is provided with a clamping portion 321, and each clamping portion 321 is located on the circumference of the same circle. The inner diameter adjustment mechanism 32 is connected to the control system signal. During operation, the control system controls the movable telescopic rods to perform synchronous telescopic movement relative to the center of the main body 31, thereby driving the inner diameter of the circle where the clamping portion 321 is located to change. By adjusting the inner diameter of the main body 31 to match the outer diameter of the single pile foundation 9, it can be suitable for single pile foundations of different sizes.

[0070] The front end of the connecting rod 35 is fixed to the rear side of the main body 31, and the rear end of the connecting rod 35 passes through the connecting groove 531 on the transverse positioning guide rod 5 and is locked and fixed in the connecting groove 531 by the first fastener 521, so that the pile holding mechanism 3 can be detachably fixed vertically on the transverse positioning guide rod 5, the center line of the connecting rod 35 coincides with the center line of the connecting groove 531, and the connecting rod 35 can move forward and backward along the center line direction of the connecting groove 531, and the distance between the pile holding mechanism 3 and the positioning guide frame can be adjusted by adjusting the position of the rear end of the connecting rod 35 in the connecting groove 531; the number of the connecting rods 35 is not less than two, and they are evenly distributed on the rear side of the main body 31. In the present embodiment, the number of the connecting rods 35 is two, and they are symmetrically arranged on the rear end surface of the pile holding mechanism 3.

[0071] The second laser emitter 34 is located in the middle of the rear end surface of the main body 31. The laser emitted by the laser emitter is vertically directed to the rear. A second positioning point 54 is provided in the middle of the front end surface of the transverse positioning guide rod 5. The position of the second positioning point 54 corresponds to the position of the laser emitted by the second laser emitter 34 when the pile holding mechanism 3 is detachably fixed on the transverse positioning guide rod 5, that is, the distance from the second positioning point 54 to the plane where the central axes of the two connecting grooves 531 are located is consistent with the distance from the center of the second laser emitter 34 to the plane where the central axes of any two connecting rods 35 are located. The position of the laser emitted by the second laser emitter 34 falls on the second positioning point 54.

[0072] In the present embodiment, the pile holding mechanism 3 can be modified from any existing pile holding mechanism 3, by installing a laser transmitter at the center position of the rear side of the existing pile holding mechanism 3, fixing the connecting rod 35 with the positioning sleeve 52 on the rear end surface of the existing pile holding mechanism 3, and connecting the inner diameter adjustment mechanism 32 of the existing pile holding mechanism 3 to the control system through an electrical signal, so as to realize the modification. During operation, the inner diameter adjustment mechanism 32 of the pile holding mechanism 3 can be controlled by the control system to perform telescopic activities to fix the single pile foundation and perform piling operations. Therefore, the structure of the pile holding mechanism 3 will not be described in detail here.

[0073] The first laser emitter 721 and the second laser emitter 34 are connected to the control system signal. During operation, the control system can control the switch of the first laser emitter 721 and the second laser emitter 34 to assist in positioning. The control system used in this solution is a prior art, and a PLC controller can be used to achieve basic opening, closing and synchronous operation functions. It does not involve program improvements, so it will not be repeated.

[0074] Example 2

[0075] like Figures 1 to 6 As shown, this embodiment provides a method for installing and using a detachable pile gripper applied to a moon pool of a ship using the embodiment 1, comprising the following steps:

[0076] S1. According to the outer diameter of the monopile foundation 9, prepare a vessel with a moon pool 2 of suitable size and a suitable detachable pile gripper.

[0077] S1-1. According to the outer diameter of the single pile foundation 9, determine a ship and a pile holding mechanism 3 with a suitable size of the moon pool 2, wherein the minimum transverse length and the minimum longitudinal length of the moon pool 2 are both larger than the outer diameter of the single pile foundation 9, and the outer diameter of the single pile foundation 9 falls within the adjustable range of the inner diameter of the pile holding mechanism 3.

[0078] S1-2. Determine the length of the lateral positioning guide rod 5 according to the distance between the two farthest connecting rods 35 on the pile holding mechanism 3. The length of the lateral positioning guide rod 5 is greater than the distance between the two farthest connecting rods 35 on the pile holding mechanism 3. The closer the length of the lateral positioning guide rod 5 is to the distance between the two farthest connecting rods 35 on the pile holding mechanism 3, the more stable the force during the construction of the single pile foundation 9.

[0079] S1-3. Carry the detachable pile gripper onto the vessel.

[0080] S2. Switch from the storage mode to the positioning auxiliary mode, and use the first laser emitter 721 on the horizontal positioning guide rod 5 and the first positioning point 631 on the deck base 6 to determine the installation position of each vertical positioning guide rod 4, and fix the deck base 6 on the deck 1.

[0081] S2-1, switch from the storage mode to the positioning auxiliary mode, remove the middle flange plate 72 from the inner flange plate 71 at both ends of the transverse positioning guide rod 5, turn the middle flange plate 72 over and fasten it to the two ends of the transverse positioning guide rod 5, so that the first laser emitter 721 is located on the outside of the transverse positioning guide rod 5.

[0082] S2-2, place a transverse positioning guide rod 5 on the side near the center of the hull at the edge of the moon pool 2, control the first laser emitter 721 to turn on through the control system, and adjust the direction of the laser emitted by the first laser emitter 721 by adjusting the placement position of the transverse positioning guide rod 5. Specifically, when the center of the hull falls within the range of the moon pool 2, the direction of the laser emitted by the first laser emitter 721 is away from the center of the hull; when the center of the hull falls outside the range of the moon pool 2, the direction of the laser emitted by the first laser emitter 721 is toward the center of the hull.

[0083] S2-3. According to the laser emitted by the first laser emitter 721 and the first positioning point 631 on the pedestal base 63, the position of the pedestal base 63 is determined and the pedestal base 63 is fixed on the deck 1, ensuring that the laser emitted by the first laser emitter 721 is vertically irradiated on the first positioning point 631, and under the condition that there is no obstacle interference on the line between the two pedestal bases 63, the distance between the pedestal base 63 and the moon pool 2 is the shortest.

[0084] S3. The vertical positioning guide rod 4 is detachably installed on the deck 1 through the deck base 6, so that the side of the electric slide 41 provided with the outer flange plate 73 is relatively arranged, and the self-positioning auxiliary mode is switched to the assembly mode, and the horizontal positioning guide rod 5 is installed between the vertical positioning guide rods 4.

[0085] S3-1. By fastening the lower flange plate 62 located on the base 63 and the upper flange plate 61 located at the lower end of the vertical positioning guide rod 4, the vertical positioning guide rod 4 is vertically fixed on the deck 1, and the side of the electric sliding sleeve 41 on which the outer flange plate 73 is provided is arranged opposite to each other.

[0086] S3-2, switch from the positioning auxiliary mode to the assembly mode, control the first laser emitter 721 to be turned off through the control system, and remove the middle flange plates 72 at both ends of the transverse positioning guide rod 5. After lowering the electric sleeve 41 to the lowest point of the vertical positioning guide rod 4, the inner flange plates 71 at both ends of the transverse positioning guide rod 5 are respectively fastened to the outer flange plates 73 to ensure that the end of the transverse positioning guide rod 5 with the second positioning point 54 faces the moon pool 2.

[0087] S4, install the pile holding mechanism 3 on the transverse positioning guide rod 5, and adjust the position of the pile holding mechanism 3 to ensure that the center line of the pile holding mechanism 3 and the guide rod are aligned, and are suspended directly above the moon pool 2.

[0088] S4-1. Move the connecting groove 531 on the transverse positioning guide rod 5 to the connecting rod 35 on the pile holding mechanism 3 in sequence and insert it. During the initial setting, when the connecting rod 35 is fully inserted into the connecting groove 531, the connecting rod 35 can be inserted as far as possible to the bottom to facilitate observation of whether the second positioning point 54 and the laser emitted by the second laser emitter 34 overlap. The closer the pile holding mechanism 3 is to the transverse positioning guide rod 5, the less effort it will take to move the pile holding mechanism 3 as a whole using the positioning sleeve 52.

[0089] S4-2, turn on the second laser emitter 34, use the positioning sleeve 52 to move the pile holding mechanism 3 until the laser emitted by the second laser emitter 34 is vertically irradiated on the second positioning point 54, and fasten it with the first fastener 521. At this time, the pile holding mechanism 3 is located in the middle position of the lateral positioning guide rod 5.

[0090] S4-3. By adjusting the length of the connecting rod 35 in the connecting groove 531, the position of the pile holding mechanism 3 is adjusted until the pile holding mechanism 3 falls above the moon pool 2. After confirming again that the laser emitted by the second laser emitter 34 has been vertically irradiated on the second positioning point 54, it is fastened with the second fastener 532 to avoid deviation during the forward and backward sliding process.

[0091] S5. Use hoisting equipment to hoist and adjust the single pile foundation 9 so that the single pile foundation 9 is inserted into the moon pool 2 through the pile holding mechanism 3.

[0092] S5-1, using the control system to control the inner diameter adjustment mechanism 32, so that the inner diameter of the pile holding mechanism 3 is larger than the outer diameter of the single pile foundation 9, and then the single pile foundation 9 is hoisted above the pile holding mechanism 3, and then lowered to the lower end of the single pile foundation 9 through the pile holding mechanism 3.

[0093] S5-2. Use the control system to control the inner diameter adjustment mechanism 32 to reduce the inner diameter of the pile holding mechanism 3 until the inner diameter of the pile holding mechanism 3 is slightly larger than the single pile foundation 9. At this time, the outer peripheral wall of the lower end of the single pile foundation 9 is pushed by the clamping part 321, so that the center of the cross-section of the lower end of the single pile foundation 9 is concentric with the center of the pile holding mechanism 3. At this time, use the lifting equipment to synchronously adjust the position of the lifting point at the upper end of the single pile foundation 9 until the single pile foundation 9 is completely vertical. Under the limiting state of the clamping part 321, continue to lower the single pile foundation 9 until it is in place. At this time, under the action of its own gravity, the single pile foundation 9 sinks to a certain depth.

[0094] S6. Perform pile sinking of the single pile foundation 9: During the work, the first fastener 521 is loosened to allow the positioning sleeve 52 to move freely within a certain range. When the ship sways, the single pile foundation 9 contacts the inner wall of the pile holding mechanism 3, and the pile holding mechanism 3 moves under force. Therefore, the rolling and pitching of the ship can be monitored in real time through the relative position between the laser emitted by the second laser emitter 34 and the second positioning point 54. When the laser emitted by the second laser emitter 34 coincides with the second positioning point 54, the pile hammer is used to sink the single pile foundation 9, thereby improving the verticality of the single pile foundation 9 to a certain extent; until the single pile foundation 9 is driven into the designed depth of the seabed and the upper end surface of the single pile foundation 9 is not higher than the bottom of the ship.

[0095] S7. After completing the installation of the current single pile foundation 9, the ship is evacuated and moved to the next pile position, and steps S5 and S6 are repeated until the construction of the single pile foundation 9 at each pile position is completed. The pile holding mechanism 3, the horizontal positioning guide rod 5, and the vertical positioning guide rod 4 are removed in sequence, and only the base 63 is retained for next use, so as not to hinder the ship with the moon pool 2 from carrying out other special construction work.

[0096] When the outer diameter of the single pile foundation 9 changes, if the outer diameter of the single pile foundation 9 exceeds the adjustment range of the inner diameter adjustment mechanism 32 of the pile holding mechanism 3, the pile holding mechanism 3 is first removed, and then replaced with a pile holding mechanism 3 with a suitable inner diameter size through step S4, and then steps S5 to S7 can be repeated to carry out construction work, which is convenient and quick.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A detachable pile gripper for use in a moon pool of a ship, comprising a pile gripping mechanism (3), a positioning guide frame and a control system, characterized in that: The pile holding mechanism (3) is erected above the moon pool (2) through the positioning guide frame, and is used to position a single pile foundation (9) placed in the moon pool (2); the positioning guide frame is detachably fixed vertically on the deck (1), and the center projection of the positioning guide frame falls on the deck (1) position closest to the center of the hull around the moon pool (2); the positioning guide frame includes a pair of vertical positioning guide rods (4) and a transverse positioning guide rod (5); The pile-holding mechanism (3) comprises a main body (31), a connecting rod (35) and a second laser emitter (34); the main body (31) is provided with an inner diameter adjustment mechanism (32) which is connected to the control system signal and is used to adjust the inner diameter of the main body (31) to match the outer diameter of the single pile foundation (9); the connecting rod (35) is fixed to the rear side of the main body (31) so that the pile-holding mechanism (3) can be detachably mounted vertically on the transverse positioning guide rod (5); the number of the connecting rods (35) is at least two and they are evenly distributed on the rear side of the main body (31); the second laser emitter (34) is located at the middle position of the rear end of the main body (31) and emits laser vertically backwards; a second positioning point (54) is provided at the middle position of the front end of the transverse positioning guide rod (5); when the pile-holding mechanism (3) is detachably fixed to the transverse positioning guide rod (5), the position of the laser emitted by the second laser emitter (34) falls on the second positioning point (54); The lower end of each of the pair of vertical positioning guide rods (4) is provided with a deck base (6), which is detachably fixed vertically to the deck (1) through the deck base (6); the deck base (6) comprises an upper flange plate (61), a lower flange plate (62) and a base base (63); wherein the lower flange plate (62) is fixed to the upper end of the base base (63), the base base (63) is fixed to the deck (1) and is provided with a first positioning point (631), and the upper flange plate (61) is fixed to the lower end of the vertical positioning guide rod (4); the upper flange plate (61) and the lower flange plate (62) are connected by bolts; The pair of vertical positioning guide rods (4) are each sleeved with an electric sleeve (41), the transverse positioning guide rod (5) is detachably fixed between the two electric sleeves (41), the transverse positioning guide rod (5) is sleeved with a positioning sleeve (52), the positioning sleeve (52) is fixed to the transverse positioning guide rod (5) via a first fastener (521), a longitudinal adjustment seat (53) is fixed to the upper end surface of the positioning sleeve (52), a connecting groove (531) is provided in the longitudinal adjustment seat (53), and the connecting groove (531) is fixed to the upper end surface of the positioning sleeve (52). 1) vertically penetrates the front and rear end surfaces of the longitudinal adjustment seat (53), a second fastener (532) is provided on the side wall of the longitudinal adjustment seat (53), the connecting rod (35) is inserted into the connecting groove (531) and is locked and fixed, and the distance between the pile holding mechanism (3) and the positioning guide frame can be adjusted by moving the connecting rod (35); the two electric sliding sleeves (41) are both connected to the control system signal, and the two electric sliding sleeves (41) are controlled to slide up and down synchronously to adjust the position of the pile holding mechanism (3); A positioning base (7) is provided at each end of the transverse positioning guide rod (5), and the transverse positioning guide rod (5) is detachably fixed between the pair of vertical positioning guide rods (4) through the positioning base (7). A storage groove (51) is provided at each end of the transverse positioning guide rod (5); the positioning base (7) comprises an inner flange plate (71), a middle flange plate (72) and an outer flange plate (73); wherein a first laser emitter (721) is provided on the inner side surface of the middle flange plate (72); when the transverse positioning guide rod (5) is placed on the deck (1), the laser emitted by the first laser emitter (721) falls on the position of the first positioning guide rod (5). The inner flange plate (71) is fixed on the outer end surface of the transverse positioning guide rod (5), and the inner flange plate (71) is provided with a through groove (711) connected with the storage groove (51), so as to form a storage space for accommodating and protecting the first laser emitter (721); the outer flange plate (73) is fixed on the inner end surface of the electric sleeve (41); the inner flange plate (71) is detachably fixed to the middle flange plate (72) or the outer flange plate (73) according to different operation modes, and the operation modes include a storage mode, a positioning auxiliary mode and an assembly mode; The first laser emitter (721) and the second laser emitter (34) are connected to the control system signal, and the control system controls the switching of the first laser emitter (721) and the second laser emitter (34).

2. A detachable pile gripper for use in a moon pool of a ship according to claim 1, characterized in that: In the storage mode, the first laser emitter (721) is located in the storage space inside the transverse positioning guide rod (5), and the middle flange plate (72) is fixed to the inner flange plate (71) by bolts; In the positioning assistance mode, the first laser emitter (721) is located outside the transverse positioning guide rod (5), the middle flange plate (72) is bolted to the inner flange plate (71), and the laser emitted by the first laser emitter (721) is vertically directed toward the rear; In the assembly mode, the inner flange plate (71) is fixed to the outer flange plate (73) by bolts, so that the transverse positioning guide rod (5) is vertically fixedly connected to the vertical positioning guide rod (4).

3. A detachable pile gripper for use in a moon pool of a ship according to claim 2, characterized in that: The inner flange plate (71) comprises a vertical plate and a horizontal plate, the through slot (711) is opened on the vertical plate, and the horizontal plate is located at the lower end of the vertical plate, so that the inner flange plate (71) is L-shaped.

4. A method for installing and using a detachable pile gripper applied to a moon pool of a ship, using a detachable pile gripper applied to a moon pool of a ship as claimed in any one of claims 2 to 3, characterized in that: The following steps are involved: S1. According to the outer diameter of the monopile foundation (9), prepare a vessel provided with a moon pool (2) and a detachable pile gripper; S2, switching from the storage mode to the positioning auxiliary mode, and using the first laser emitter (721) on the transverse positioning guide rod (5) and the first positioning point (631) on the deck base (6) to determine the installation position of each vertical positioning guide rod (4), and fixing the deck base (6) on the deck (1); S3, the vertical positioning guide rod (4) is detachably mounted on the deck (1) through the deck base (6), so that the side of the electric sliding sleeve (41) provided with the outer flange plate (73) is arranged opposite to each other, the positioning auxiliary mode is switched to the assembly mode, and the transverse positioning guide rod (5) is installed between the vertical positioning guide rods (4); S4, installing the pile holding mechanism (3) on the transverse positioning guide rod (5), adjusting its position, ensuring that the pile holding mechanism (3) is aligned with the center line of the guide rod, and suspending it above the moon pool (2); S5, hoisting the single pile foundation (9) and adjusting the position, inserting the single pile foundation (9) through the self-holding pile mechanism (3) into the moon pool (2); S6. Performing pile sinking work on the single pile foundation (9): allowing the positioning sleeve (52) to move freely within a certain range, and using the second laser emitter (34) and the second positioning point (54) to monitor the rolling and pitching of the ship in real time, and when the laser and the second positioning point (54) coincide, using a pile hammer to sink the single pile foundation (9) to a designed depth, ensuring that the upper end surface of the single pile foundation (9) is not higher than the bottom of the ship; S7, after the installation of the single pile foundation (9) is completed, the ship moves to the next pile position, and S5 and step S6 are repeated until the construction of all pile positions is completed; then, the pile holding mechanism (3) and the positioning guide rod are removed, and the base base (63) is retained for next use; If the outer diameter of a single pile changes and exceeds the adjustment range, the pile holding mechanism (3) must be removed first, and then replaced with a pile holding mechanism (3) of appropriate size, and then steps S5 to S7 are repeated to continue construction.

5. The method for installing and using a detachable pile gripper for a moon pool of a ship according to claim 4, characterized in that: The step S1 comprises the following specific steps: S1-1, according to the outer diameter of the single pile foundation (9), determining a vessel with a moon pool (2) of suitable size and a pile holding mechanism (3); S1-2, determining the length of the lateral positioning guide rod (5) according to the distance between the two farthest connecting rods (35) on the pile holding mechanism (3); S1-3. Carry the detachable pile gripper onto the vessel.

6. The method for installing and using a detachable pile gripper for a moon pool of a ship according to claim 4, characterized in that: The step S2 comprises the following specific steps: S2-1, switching from the storage mode to the positioning auxiliary mode, removing the middle flange plate (72) from the inner flange plates (71) at both ends of the transverse positioning guide rod (5), turning over the middle flange plate (72) and fastening it to both ends of the transverse positioning guide rod (5), so that the first laser emitter (721) is located outside the transverse positioning guide rod (5); S2-2, placing a transverse positioning guide rod (5) on one side of the edge of the moon pool (2) close to the center of the hull, controlling the first laser emitter (721) to turn on, and adjusting the placement position of the transverse positioning guide rod (5) to adjust the direction of the laser emitted by the first laser emitter (721); S2-3. Determine and fix the position of the base (63) based on the laser emitted by the first laser emitter (721) and the first positioning point (631) on the base (63), ensure that the laser irradiates the positioning point vertically, and make the distance between the base (63) and the moon pool (2) as short as possible when there is no interference between the two bases (63).

7. The method for installing and using a detachable pile gripper for a moon pool of a ship according to claim 6, characterized in that: The step S2-2 includes the following specific steps: When the center of the hull falls within the range of the moon pool (2), the direction of the laser emitted by the first laser emitter (721) is directed away from the center of the hull; When the center of the hull falls outside the range of the moon pool (2), the direction of the laser emitted by the first laser emitter (721) is directed toward the center of the hull.

8. The method for installing and using a detachable pile gripper for a moon pool of a ship according to claim 4, characterized in that: The step S3 comprises the following specific steps: S3-1, by fastening the lower flange plate (62) located on the base (63) and the upper flange plate (61) located at the lower end of the vertical positioning guide rod (4), the vertical positioning guide rod (4) is vertically fixed to the deck (1), and the side of the electric sliding sleeve (41) provided with the outer flange plate (73) is arranged opposite to each other; S3-2, control the first laser emitter (721) to be turned off, and remove the middle flange plates (72) at both ends of the transverse positioning guide rod (5), lower the electric sleeve (41) to the lowest point of the vertical positioning guide rod (4), and then fasten the inner flange plates (71) at both ends of the transverse positioning guide rod (5) to the outer flange plates (73) respectively, to ensure that one end of the transverse positioning guide rod (5) provided with the second positioning point (54) faces the moon pool (2).

9. The method for installing and using a detachable pile gripper for a moon pool of a ship according to claim 4, characterized in that: The step S4 comprises the following specific steps: S4-1, moving the connecting groove (531) on the transverse positioning guide rod (5) to the connecting rod (35) on the pile holding mechanism (3) in sequence and inserting it; S4-2, turn on the second laser emitter (34), use the positioning sleeve (52) to move the pile holding mechanism (3) until the laser emitted by the second laser emitter (34) is vertically irradiated on the second positioning point (54) and then fastened and fixed. At this time, the pile holding mechanism (3) is located at the center position of the transverse positioning guide rod (5). S4-3. By adjusting the length of the connecting rod (35) in the connecting groove (531), the position of the pile holding mechanism (3) is adjusted until the pile holding mechanism (3) falls above the moon pool (2) and is then fastened and fixed to avoid deviation during the forward and backward sliding process.

10. The method for installing and using a detachable pile gripper for a moon pool of a ship according to claim 4, characterized in that: The step S5 comprises the following specific steps: S5-1, using a control system to control the inner diameter adjustment mechanism (32) so that the inner diameter of the pile holding mechanism (3) is larger than the outer diameter of the single pile foundation (9), and then the single pile foundation (9) is hoisted above the pile holding mechanism (3), and then lowered to the lower end of the single pile foundation (9) to pass through the pile holding mechanism (3); S5-2, using the control system to control the inner diameter adjustment mechanism (32) to reduce the inner diameter of the pile holding mechanism (3) until the inner diameter of the pile holding mechanism (3) is slightly larger than the single pile foundation (9), and the position of the single pile foundation (9) is simultaneously adjusted to make the single pile foundation (9FF09) vertical, and the single pile foundation (9FF09) is continuously lowered until it is in place. At this time, under the action of the single pile foundation (9)'s own gravity, the single pile foundation (9) sinks to a certain depth.

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