A wedge-shaped drag reduction device and method for a ship moon pool

Abstract

The present invention relates to the field of ship and marine engineering technology, and specifically to a wedge-shaped drag reduction device for a ship moon pool, comprising a moon pool, a longitudinal moving mechanism, a transverse telescopic mechanism, a wedge-shaped drag reduction mechanism and an automatic hatch, wherein the inner walls around the moon pool are provided with a plurality of hatches distributed at intervals, and the rear end of each hatch is provided with an automatic hatch, and the outer sides around the moon pool are provided with longitudinal moving mechanisms, and the front end of each longitudinal moving mechanism is provided with a transverse telescopic mechanism, and the front end of each transverse telescopic mechanism is provided with a wedge-shaped drag reduction mechanism. By providing the wedge-shaped drag reduction mechanism, the drag reduction angle of the wedge-shaped drag reduction plate can be changed according to the different forces of the agitation generated by the movement of seawater waves inside the moon pool, thereby achieving the best drag reduction efficiency. The present invention also provides a method for using the wedge-shaped drag reduction device for a ship moon pool.

Description

Technical Field

[0001] The present invention relates to the technical field of ship and ocean engineering, and in particular to a wedge-shaped drag reduction device and method for a ship moon pool. Background Art

[0002] On ships such as diving support vessels and drilling ships, a well-shaped structure located in the middle of the hull and penetrating the deck to the bottom plate is usually set up for operational needs. Although the moon pool brings convenience to the special operations of the ship, its huge opening causes a significant increase in the hull resistance when the ship is sailing.

[0003] The invention with announcement number CN105416521B discloses a platform moon pool drag reduction device, including a vibration reduction cabin and a sway reduction cabin arranged on the transverse inner walls at both ends of the moon pool and separated by watertight partitions, the outer wall of the vibration reduction cabin and the lower outer wall of the sway reduction cabin are respectively provided with several rows of staggered damping blocks, the lower outer wall of the sway reduction cabin is provided with several wave-blocking columns, three layers of partitions are arranged in the upper and lower parts of the sway reduction cabin, several rows of horizontally staggered vertical wave-absorbing blocks are arranged on the upper and lower sides of the partitions and the inner wall of the cabin bottom, and the partitions are provided with corresponding upper and lower wedge-shaped blocks toward the outer end of the platform moon pool. The outer wall and vertical wall plate of the vibration reduction cabin are respectively provided with several rectangular openings, and several rows of vertically staggered horizontal wave-absorbing blocks are arranged on the inner walls and vertical wall plates at the longitudinal ends of the moon pool. The vibration reduction cabin and the sway reduction cabin of the present invention can ensure the safe and stable operation of the platform under different working conditions. The wave-breaking columns installed on the lower outer wall of the sway reduction tank can effectively resist the impact of the incoming flow, weaken the kinetic energy of the waves, induce the incoming flow to move to the bottom of the moon pool, and reduce the formation of vortices in the moon pool.

[0004] The invention with announcement number CN104724248B discloses a ship moon pool structure, specifically, a damping plate structure for reducing fluid agitation in the moon pool cavity, belonging to the technical field of ship moon pools. A damping plate structure for reducing fluid agitation in the moon pool cavity, characterized in that: the damping plate structure includes a horizontal damping plate and a vertical damping plate; holes are opened on the vertical damping plate and the horizontal damping plate, and the water flows into the area between the vertical damping plate and the horizontal damping plate, thereby reducing water flow agitation; a ventilation duct leading to the external atmosphere is opened on the side of the air cushion area between the moon pool top cover and the free liquid surface in the moon pool. The present invention opens a ventilation duct leading to the external atmosphere on the side wall of the air cushion area, so that the air cushion area has the same pressure as the external pressure, so that the fluctuation of the water body inside the moon pool is as synchronized as possible with the fluctuation of the water body outside the ship, reducing water flow agitation, thereby reducing navigation resistance and reducing motor power consumption.

[0005] However, the above patent still has the following problems:

[0006] (1) In the prior art, due to the different draft heights of the moon pool, multiple moon pools are generally provided in the vertical direction to increase the usable space. Moreover, the moon pools are fixed at intervals on the inner wall of the moon pool and cannot be moved. On the one hand, it is not convenient to repair and replace the moon pools when damaged. On the other hand, there is a risk of being damaged by collision when not in use.

[0007] (2) During the ship's travel, the intensity of the turbulence generated by the wave movement of the seawater inside the moon pool will be different depending on the travel speed. Different intensities correspond to different optimal drag reduction angles. However, the placement angle of the existing technology is generally fixed, which affects the drag reduction effect on the fluid. Summary of the invention

[0008] In view of the above-mentioned problems existing in the prior art, the present invention provides a longitudinal moving mechanism for controlling the vertical up and down movement of the wedge-shaped drag reduction mechanism, and a transverse telescopic mechanism for extending and retracting the wedge-shaped drag reduction mechanism forward and backward. The wedge-shaped drag reduction mechanism can change the drag reduction angle of the wedge-shaped drag reduction plate according to the different forces of the turbulence generated by the movement of seawater waves inside the moon pool, and an automatic hatch can protect the wedge-shaped drag reduction mechanism from the impact of seawater when not in use.

[0009] The basic scheme of the present invention is: a wedge-shaped drag reduction device for a ship moon pool, comprising a moon pool, a longitudinal moving mechanism, a transverse telescopic mechanism, a wedge-shaped drag reduction mechanism and an automatic hatch, wherein the inner wall around the moon pool is provided with a plurality of hatches distributed at intervals, the rear end of each hatch is provided with an automatic hatch, the outer side around the moon pool is provided with a longitudinal moving mechanism, the front end of each longitudinal moving mechanism is provided with a transverse telescopic mechanism, the front end of each transverse telescopic mechanism is provided with a wedge-shaped drag reduction mechanism, and each wedge-shaped drag reduction mechanism is matched with a plurality of hatches;

[0010] Each of the wedge-shaped drag reduction mechanisms comprises a mounting base, a driving assembly, a rotating assembly and a drag reduction assembly, wherein the rear end of the mounting base is connected to the transverse telescopic mechanism, the driving assembly is arranged at one side of the front end of the mounting base, the rotating assembly is arranged at the middle of the front end of the mounting base, the drag reduction assembly is arranged at the other side of the front end of the mounting base, and the driving assembly and the drag reduction assembly are connected and driven by the rotating assembly, and a protective shell is arranged on the outside of the driving assembly and the rotating assembly;

[0011] Each of the longitudinal moving mechanisms comprises a transmission assembly and a sliding assembly, wherein the rear end of the transmission assembly is connected to the hull, the sliding assembly is arranged at the front end of the transmission assembly, and the transmission assembly is connected with the sliding assembly for transmission;

[0012] Each of the transverse telescopic mechanisms includes a telescopic component and a hydraulic drive component. The hydraulic drive component is arranged inside the telescopic component and is connected to the telescopic component for transmission. The front end of the telescopic component is connected to the rear end of the mounting base plate, and the rear end of the telescopic component is connected to the front end of the sliding component.

[0013] Preferably, the drag reduction assembly includes a wedge-shaped drag reduction plate, a connecting clamp and a baffle, the baffle is arranged on the upper part of the other side of the front end of the mounting base plate, the lower end of the connecting clamp is connected to the middle part of the upper end of the wedge-shaped drag reduction plate, and an oblique opening is opened on the inner side of the lower end of the wedge-shaped drag reduction plate.

[0014] Preferably, the rotating assembly comprises a rack, a rotating gear, a rotating shaft and a mounting support;

[0015] The rotating shaft is arranged in the middle of the other side of the front end of the mounting base plate, and the two sides of the rotating shaft are correspondingly connected to the mounting base plate through the mounting support, the upper end of the connecting splint passes through the rotating shaft and is detachably connected to the middle end of the rotating shaft, the rotating gear is arranged on one side of the rotating shaft, and the front end of the rack is meshed and connected with the rotating gear.

[0016] Preferably, the driving assembly comprises a drag reduction hydraulic rod, a drag reduction hydraulic cylinder, a connecting plate, a sliding block and a sliding rail;

[0017] The rear end of the drag reduction hydraulic cylinder is connected to the upper part of one side of the front end of the mounting base plate, the upper end of the drag reduction hydraulic rod is arranged inside the drag reduction hydraulic cylinder and is slidably connected to the drag reduction hydraulic cylinder, the lower end of the drag reduction hydraulic rod is connected to one side of the connecting plate, and the other side of the connecting plate is connected to the lower end of the slider, the rear end of the slide rail is connected to the middle part of the front end of the mounting base plate, the rear end of the slider is slidably connected to the front end of the slide rail, and the rear end of the rack is connected to the front end of the slider.

[0018] Preferably, each of the automatic cabin doors comprises a driver, a transmission belt, a connecting side plate, a sliding guide rail, a sealing door and a sliding side plate;

[0019] Sliding guide rails are provided on both sides of the rear end of each hatch, the sealing door is arranged at the rear end of the hatch, and a plurality of sliding side panels are provided on both sides of the front end of the sealing door, each of the sliding side panels is slidably connected to the sliding guide rails, and drivers are provided at the upper and lower parts of one side of the rear end of the hatch, and the upper and lower ends of the transmission belt are respectively rotatably connected to the rear ends of the two drivers, and a plurality of connecting side panels are provided on one side of the rear end of the sealing door, and one side of the plurality of connecting side panels is correspondingly connected to one side of the transmission belt.

[0020] Preferably, the sliding assembly comprises an upper mounting seat, a lower mounting seat, a longitudinal slide rail, a longitudinal slide plate, a longitudinal connecting plate and a longitudinal connecting side plate;

[0021] The lower end of the upper mounting seat is connected to the upper end of the longitudinal slide rail, the upper end of the lower mounting seat is connected to the lower end of the longitudinal slide rail, the rear end of the longitudinal slide plate is slidably connected to the front end of the longitudinal slide rail, the rear end of the longitudinal connecting plate is connected to the front end of the longitudinal slide plate, and the inner side of the front end of the longitudinal connecting side plate is connected to one side of the longitudinal connecting plate.

[0022] Preferably, the transmission assembly comprises an upper transmission motor, an upper transmission gear, an upper transmission roller, a crawler belt, a lower transmission motor, a lower transmission gear, a lower transmission roller and a connecting rod;

[0023] The upper transmission motor is arranged inside the upper mounting seat, the lower transmission motor is arranged inside the lower mounting seat, the upper transmission gear is arranged on one side of the upper transmission motor, and the lower transmission gear is arranged on one side of the lower transmission motor. The upper transmission roller is rotatably connected to the upper inner portion of the rear end of the longitudinally connected side plate through a connecting rod, and the lower transmission roller is rotatably connected to the lower inner portion of the rear end of the longitudinally connected side plate through a connecting rod. The upper end of the crawler track is connected to the lower end of the upper mounting seat, and the lower end of the crawler track is connected to the upper end of the lower mounting seat. The upper part of the crawler track passes through the upper transmission roller and the upper transmission gear respectively and is rotatably connected to the upper transmission roller and the upper transmission gear, and the lower part of the crawler track passes through the lower transmission roller and the lower transmission gear respectively and is rotatably connected to the lower transmission roller and the lower transmission gear.

[0024] Preferably, the telescopic assembly comprises an upper connecting frame, a lower connecting frame, an X-shaped telescopic frame, a rotating support, a connecting roller, a connecting shaft and an L-shaped side plate;

[0025] The rear end of the lower connecting frame is connected to the front end of the longitudinal connecting plate, and the front end of the upper connecting frame is connected to the rear end of the mounting base plate, and two X-shaped telescopic frames are provided, and the two X-shaped telescopic frames are symmetrically distributed between the upper connecting frame and the lower connecting frame, and the upper and lower sides of one end of each of the X-shaped telescopic frames are respectively rotatably connected to the upper connecting frame and the lower connecting frame through a rotating support, and the upper and lower sides of the other end of each of the X-shaped telescopic frames are provided with connecting rollers, and each connecting roller is rotatably connected to each X-shaped telescopic frame through a connecting rotating shaft, and L-shaped side panels are provided on both sides of the upper connecting frame and the lower connecting frame, one end of the upper connecting roller is correspondingly slidably connected to the upper connecting frame, and the other end of the upper connecting roller is slidably connected to the inner side of the L-shaped side panel; one end of the lower connecting roller is correspondingly slidably connected to the lower connecting frame, and the other end of the lower connecting roller is slidably connected to the inner side of the L-shaped side panel.

[0026] Preferably, the hydraulic drive assembly comprises a connecting spindle, a connecting support rod, a transverse telescopic rod and a transverse hydraulic cylinder;

[0027] The two sides of the connecting main shaft pass through the middle ends of the two X-shaped telescopic frames and are rotatably connected with the two X-shaped telescopic frames. Connecting support rods are provided between the front and rear ends on both sides of the two X-shaped telescopic frames. Two transverse hydraulic cylinders are provided. The two transverse hydraulic cylinders are symmetrically distributed on one side of the front end of the lower connecting frame, and the rear end of each transverse hydraulic cylinder is rotatably connected with the front end of the lower connecting frame. A transverse telescopic rod is provided at the front end of each transverse hydraulic cylinder. The rear end of each transverse telescopic rod is correspondingly arranged inside the transverse hydraulic cylinder and is slidably connected to the transverse hydraulic cylinder. The front end of each transverse telescopic rod is rotatably connected with one side of the connecting main shaft.

[0028] The present invention also discloses a method for using the wedge-shaped drag reduction device for a ship moon pool, comprising the following steps:

[0029] S1, equipment debugging, start the upper transmission motor and the lower transmission motor at the same time to drive the crawler to slide, check whether the longitudinal slide plate slides, whether the sliding is smooth, check whether there is a large area of ​​water leakage at the connection between the sealing door and the hatch, start the driver to drive the transmission belt to slide, the transmission belt drives the sealing door to move downward, after the sealing door moves to the limit position, check whether the upper end of the sealing door is level with the lower end of the hatch, start the hydraulic drive assembly, check whether the telescopic assembly is extended horizontally, start the drive assembly, and check whether the wedge-shaped drag reduction plate rotates;

[0030] S2, simultaneously starting the upper transmission motor and the lower transmission motor to drive the upper transmission gear and the lower transmission gear to rotate respectively, the upper transmission gear and the lower transmission gear drive the crawler track to slide at the same time, the crawler track drives the longitudinal slide plate to slide vertically, and the longitudinal slide plate drives the wedge-shaped drag reduction mechanism to move to a specified position;

[0031] S3, simultaneously starting two drivers to drive the transmission belt to rotate, and the transmission belt rotation drives the sealing door to slide downward to a specified position;

[0032] S4, simultaneously start the two transverse hydraulic cylinders to drive the transverse telescopic rods to extend forward, the two transverse telescopic rods drive the connecting spindle to move forward, the connecting spindle drives the two X-shaped telescopic frames to move to the specified position, and the wedge-shaped drag reduction mechanism passes through the hatch;

[0033] S5, start the drag reduction hydraulic cylinder to drive the drag reduction hydraulic rod to extend, the drag reduction hydraulic rod drives the slider to slide, the slider drives the rotating gear to rotate the angle through the rack, and the rotating gear drives the wedge-shaped drag reduction plate to rotate to the optimal angle through the rotating shaft.

[0034] The working principle and advantages of the present invention are:

[0035] (1) The present invention provides a wedge-shaped drag reduction mechanism, which drives the drag reduction hydraulic rod to move through the drag reduction hydraulic cylinder, and the drag reduction hydraulic rod drives the slider to slide through the connecting plate. The slider drives the rotating shaft to rotate through the meshing transmission of the rack and the rotating gear, and the rotating shaft drives the wedge-shaped drag reduction plate to rotate a specified angle, so that the wedge-shaped drag reduction plate is rotated to the corresponding optimal drag reduction angle according to the different strengths of the agitation generated by the movement of seawater waves inside the moon pool;

[0036] (2) A longitudinal moving mechanism is provided. By fixing the upper mounting seat and the lower mounting seat, the upper transmission motor and the lower transmission motor are meshed with the transmission gear and the crawler track to drive the longitudinal connecting side plate to move up and down. The longitudinal connecting side plate drives the longitudinal slide plate to slide vertically. The longitudinal slide plate drives the wedge-shaped drag reduction mechanism to move vertically up and down. The wedge-shaped drag reduction mechanism can be driven to move to the rear end of the corresponding hatch according to the different draft heights of the moon pool to avoid installing multiple drag reducers on the same vertical line and increase the use space. In addition, when the wedge-shaped drag reduction mechanism fails or needs maintenance, the wedge-shaped drag reduction mechanism can be driven to rise to the surface of the hull for repair and maintenance.

[0037] (3) Since the drag reduction mechanism is generally arranged inside the moon pool, when not in use, it will continue to be corroded, shortening its service life. On the other hand, there is also a risk of being damaged by collision with detection equipment when not in use. A transverse telescopic mechanism and an automatic hatch are provided. Two hydraulic cylinders are used to extend and retract simultaneously, driving the X-shaped telescopic frame to move forward and backward stably, thereby driving the wedge-shaped drag reduction mechanism to stably enter and exit the hatch. When in use, the two drives drive the sealed door to move downward to expose the hatch, and the transverse telescopic mechanism drives the wedge-shaped drag reduction mechanism to extend out of the hatch to perform drag reduction movement. When not in use, the transverse telescopic mechanism drives the wedge-shaped drag reduction mechanism to retract the hatch, and the two drives drive the sealed door to move upward to close the hatch to protect the wedge-shaped drag reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A three-dimensional structural diagram of a wedge-shaped drag reduction device for a ship moon pool according to the present invention (see FIG. Figure 1 );

[0039] Figure 2 A three-dimensional structural diagram of a wedge-shaped drag reduction device for a ship moon pool according to the present invention (see FIG. Figure 2 );

[0040] Figure 3 It is a structural schematic diagram of a wedge-shaped drag reduction mechanism in a wedge-shaped drag reduction device for a moon pool of a ship according to the present invention;

[0041] Figure 4 It is a structural schematic diagram of a wedge-shaped drag reduction mechanism in a wedge-shaped drag reduction device for a ship moon pool according to the present invention (without the protective shell);

[0042] Figure 5 It is a structural schematic diagram of an automatic hatch in a wedge-shaped drag reduction device for a moon pool of a ship according to the present invention;

[0043] Figure 6 Schematic diagram of the structure of the longitudinal moving mechanism in the wedge-shaped drag reduction device for the moon pool of a ship according to the present invention (see FIG. Figure 1 );

[0044] Figure 7Schematic diagram of the structure of the longitudinal moving mechanism in the wedge-shaped drag reduction device for the moon pool of a ship according to the present invention (see FIG. Figure 2 );

[0045] Figure 8 The structure diagram of the transverse telescopic mechanism in the wedge-shaped drag reduction device for a ship moon pool of the present invention (see FIG. Figure 1 );

[0046] Fig. 9 The structure diagram of the transverse telescopic mechanism in the wedge-shaped drag reduction device for a ship moon pool of the present invention (see FIG. Figure 2 ).

[0047] The reference numerals involved in the accompanying drawings are:

[0048] Longitudinal moving mechanism 1; upper mounting seat 101; upper transmission motor 102; crawler 103; upper transmission roller 104; connecting rod 105; longitudinal connecting side plate 106; lower mounting seat 107; lower transmission gear 108; upper transmission gear 109; longitudinal connecting plate 110; lower transmission roller 111; longitudinal slide rail 112; lower transmission motor 113; longitudinal slide plate 114;

[0049] Transverse telescopic mechanism 2; upper connecting frame 201; rotating support 202; connecting main shaft 203; transverse telescopic rod 204; transverse hydraulic cylinder 205; lower connecting frame 206; connecting support rod 207; connecting shaft 208, connecting roller 209; X-shaped telescopic frame 210; L-shaped side plate 211;

[0050] wedge-shaped drag reduction mechanism 3; protective shell 301; connecting clamp plate 302; wedge-shaped drag reduction plate 303; rotating shaft 304; mounting support 305; mounting base plate 306; baffle 307; drag reduction hydraulic rod 308; drag reduction hydraulic cylinder 309; rack 310; slider 311; connecting plate 312; slide rail 313; rotating gear 314;

[0051] Moon pool 4; hatch 5;

[0052] Automatic hatch 6; driver 601; transmission belt 602; connecting side plate 603; sliding guide rail 604; sealing door 605; sliding side plate 606. DETAILED DESCRIPTION

[0053] The following is a further detailed description through specific implementation methods:

[0054] Embodiment 1:

[0055] like Figure 1-5As shown, a wedge-shaped drag reduction device for a ship moon pool comprises a moon pool 4, a longitudinal moving mechanism 1, a transverse telescopic mechanism 2, a wedge-shaped drag reduction mechanism 3 and an automatic hatch 6. The inner wall around the moon pool 4 is provided with a plurality of hatches 5 distributed at intervals, and the rear end of each hatch 5 is provided with an automatic hatch 6. The outer side around the moon pool 4 is provided with a longitudinal moving mechanism 1, and the front end of each longitudinal moving mechanism 1 is provided with a transverse telescopic mechanism 2, and the front end of each transverse telescopic mechanism 2 is provided with a wedge-shaped drag reduction mechanism 3, and each wedge-shaped drag reduction mechanism 3 is matched with a plurality of hatches 5;

[0056] Each wedge-shaped drag reduction mechanism 3 includes a mounting base plate 306, a driving assembly, a rotating assembly and a drag reduction assembly. The rear end of the mounting base plate 306 is connected to the lateral telescopic mechanism. The driving assembly is arranged at one side of the front end of the mounting base plate 306, the rotating assembly is arranged at the middle of the front end of the mounting base plate 306, and the drag reduction assembly is arranged at the other side of the front end of the mounting base plate 306. The driving assembly and the drag reduction assembly are connected and driven by the rotating assembly. A protective shell 301 is arranged on the outside of the driving assembly and the rotating assembly.

[0057] Each longitudinal moving mechanism 1 comprises a transmission assembly and a sliding assembly, wherein the rear end of the transmission assembly is connected to the hull, the sliding assembly is arranged at the front end of the transmission assembly, and the transmission assembly and the sliding assembly are connected for transmission;

[0058] Each transverse telescopic mechanism 2 includes a telescopic component and a hydraulic drive component. The hydraulic drive component is arranged inside the telescopic component and is connected to the telescopic component for transmission. The front end of the telescopic component is connected to the rear end of the mounting base plate 306, and the rear end of the telescopic component is connected to the front end of the sliding component.

[0059] The drag reduction assembly includes a wedge-shaped drag reduction plate 303, a connecting clamp plate 302 and a baffle plate 307. The baffle plate 307 is arranged at the upper part of the other side of the front end of the mounting base plate 306. The lower end of the connecting clamp plate 302 is connected to the middle part of the upper end of the wedge-shaped drag reduction plate 303. An oblique opening is provided on the inner side of the lower end of the wedge-shaped drag reduction plate 303. The drag reduction assembly is provided with a wedge-shaped drag reduction plate 303, and the most suitable cross-sectional shape is set according to the fluctuation of sea water, so as to better reduce the turbulence of water flow. The connecting clamp plate 302 is provided to facilitate the connection and transmission between the wedge-shaped drag reduction plate 303 and the rotating assembly, and the baffle plate 307 is provided to facilitate the cooperation with the wedge-shaped drag reduction plate 303 to reduce the turbulence of water flow.

[0060] The rotating assembly includes a rack 310, a rotating gear 314, a rotating shaft 304 and a mounting support 305;

[0061] The rotating shaft 304 is arranged at the middle of the other side of the front end of the mounting base plate 306, and the two sides of the rotating shaft 304 are correspondingly connected to the mounting base plate 306 through the mounting support 305. The upper end of the connecting clamp plate 302 passes through the rotating shaft 304 and is detachably connected to the middle end of the rotating shaft 304. The rotating gear 314 is arranged on one side of the rotating shaft 304, and the front end of the rack 310 is meshed and connected with the rotating gear 314. The rotating assembly is provided with a rack 310 and a rotating gear 314, and adopts gear meshing transmission, which has higher transmission accuracy and stronger transmission stability. The rotating shaft 304 is provided to facilitate changing the drag reduction angle of the wedge-shaped drag reduction plate 303 according to the different forces of the agitation generated by the wave movement of the seawater inside the moon pool 4, so as to achieve the best drag reduction efficiency. The mounting support 305 is provided to facilitate the rotational connection between the rotating shaft 304 and the mounting base plate 306.

[0062] The driving assembly includes a drag reduction hydraulic rod 308, a drag reduction hydraulic cylinder 309, a connecting plate 312, a sliding block 311 and a sliding rail 313;

[0063] The rear end of the drag reduction hydraulic cylinder 309 is connected to the upper part of one side of the front end of the mounting base plate 306, the upper end of the drag reduction hydraulic rod 308 is arranged inside the drag reduction hydraulic cylinder 309 and is slidably connected to the drag reduction hydraulic cylinder 309, the lower end of the drag reduction hydraulic rod 308 is connected to one side of the connecting plate 312, the other side of the connecting plate 312 is connected to the lower end of the slider 311, the rear end of the slide rail 313 is connected to the middle part of the front end of the mounting base plate 306, the rear end of the slider 311 is slidably connected to the front end of the slide rail 313, and the rear end of the rack 310 is connected to the front end of the slider 311. The driving component is provided with the drag reduction hydraulic rod 308 and the drag reduction hydraulic cylinder 309, and adopts a hydraulic drive mode, so that the movement is more stable and the movement efficiency is higher. The connecting plate 312 is provided to facilitate the connection and transmission of the drag reduction hydraulic rod 308 and the slider 311, and the slider 311 and the slide rail 313 are provided to further stably drive the rack 310 to move.

[0064] Each automatic door 6 includes a driver 601, a transmission belt 602, a connecting side plate 603, a sliding guide rail 604, a sealing door 605 and a sliding side plate 606;

[0065] Each hatch 5 is provided with a sliding guide rail 604 on both sides of the rear end, a sealing door 605 is provided at the rear end of the hatch 5, and a plurality of sliding side plates 606 are provided at intervals on both sides of the front end of the sealing door 605, and each sliding side plate 606 is slidably connected to the sliding guide rail 604. A driver 601 is provided at the upper and lower parts of one side of the rear end of the hatch 5, and the upper and lower ends of the transmission belt 602 are respectively rotatably connected to the rear ends of the two drivers 601. A plurality of connecting side plates 603 are provided at one side of the rear end of the sealing door 605, and one side of the plurality of connecting side plates 603 is connected to one side of the transmission belt 602. The automatic hatch 6 is provided with a driver 601 and a transmission belt 602, and adopts belt drive, has low movement noise, is provided with overload protection, is provided with a connecting side plate 603, and is convenient for the sealing door 605 to be connected and driven with the transmission belt 602, and is provided with a sliding guide rail 604 and a sliding side plate 606, and is convenient for assisting the movement of the sealing door 605, and further improves the movement stability.

[0066] Embodiment 2:

[0067] like Figure 1-9 As shown, a wedge-shaped drag reduction device for a ship moon pool comprises a moon pool 4, a longitudinal moving mechanism 1, a transverse telescopic mechanism 2, a wedge-shaped drag reduction mechanism 3 and an automatic hatch 6. The inner wall around the moon pool 4 is provided with a plurality of hatches 5 distributed at intervals, and the rear end of each hatch 5 is provided with an automatic hatch 6. The outer side around the moon pool 4 is provided with a longitudinal moving mechanism 1, and the front end of each longitudinal moving mechanism 1 is provided with a transverse telescopic mechanism 2, and the front end of each transverse telescopic mechanism 2 is provided with a wedge-shaped drag reduction mechanism 3, and each wedge-shaped drag reduction mechanism 3 is matched with a plurality of hatches 5;

[0068] Each wedge-shaped drag reduction mechanism 3 includes a mounting base plate 306, a driving assembly, a rotating assembly and a drag reduction assembly. The rear end of the mounting base plate 306 is connected to the lateral telescopic mechanism. The driving assembly is arranged at one side of the front end of the mounting base plate 306, the rotating assembly is arranged at the middle of the front end of the mounting base plate 306, and the drag reduction assembly is arranged at the other side of the front end of the mounting base plate 306. The driving assembly and the drag reduction assembly are connected and driven by the rotating assembly. A protective shell 301 is arranged on the outside of the driving assembly and the rotating assembly.

[0069] Each longitudinal moving mechanism 1 comprises a transmission assembly and a sliding assembly, wherein the rear end of the transmission assembly is connected to the hull, the sliding assembly is arranged at the front end of the transmission assembly, and the transmission assembly and the sliding assembly are connected for transmission;

[0070] Each transverse telescopic mechanism 2 includes a telescopic component and a hydraulic drive component. The hydraulic drive component is arranged inside the telescopic component and is connected to the telescopic component for transmission. The front end of the telescopic component is connected to the rear end of the mounting base plate 306, and the rear end of the telescopic component is connected to the front end of the sliding component.

[0071] The drag reduction assembly includes a wedge-shaped drag reduction plate 303, a connecting clamp plate 302 and a baffle plate 307. The baffle plate 307 is arranged at the upper part of the other side of the front end of the mounting base plate 306. The lower end of the connecting clamp plate 302 is connected to the middle part of the upper end of the wedge-shaped drag reduction plate 303. An oblique opening is provided on the inner side of the lower end of the wedge-shaped drag reduction plate 303. The drag reduction assembly is provided with a wedge-shaped drag reduction plate 303, and the most suitable cross-sectional shape is set according to the fluctuation of sea water, so as to better reduce the turbulence of water flow. The connecting clamp plate 302 is provided to facilitate the connection and transmission between the wedge-shaped drag reduction plate 303 and the rotating assembly, and the baffle plate 307 is provided to facilitate the cooperation with the wedge-shaped drag reduction plate 303 to reduce the turbulence of water flow.

[0072] The rotating assembly includes a rack 310, a rotating gear 314, a rotating shaft 304 and a mounting support 305;

[0073] The rotating shaft 304 is arranged at the middle of the other side of the front end of the mounting base plate 306, and the two sides of the rotating shaft 304 are correspondingly connected to the mounting base plate 306 through the mounting support 305. The upper end of the connecting clamp plate 302 passes through the rotating shaft 304 and is detachably connected to the middle end of the rotating shaft 304. The rotating gear 314 is arranged on one side of the rotating shaft 304, and the front end of the rack 310 is meshed and connected with the rotating gear 314. The rotating assembly is provided with a rack 310 and a rotating gear 314, and adopts gear meshing transmission, which has higher transmission accuracy and stronger transmission stability. The rotating shaft 304 is provided to facilitate changing the drag reduction angle of the wedge-shaped drag reduction plate 303 according to the different forces of the agitation generated by the wave movement of the seawater inside the moon pool 4, so as to achieve the best drag reduction efficiency. The mounting support 305 is provided to facilitate the rotational connection between the rotating shaft 304 and the mounting base plate 306.

[0074] The driving assembly includes a drag reduction hydraulic rod 308, a drag reduction hydraulic cylinder 309, a connecting plate 312, a sliding block 311 and a sliding rail 313;

[0075] The rear end of the drag reduction hydraulic cylinder 309 is connected to the upper part of one side of the front end of the mounting base plate 306, the upper end of the drag reduction hydraulic rod 308 is arranged inside the drag reduction hydraulic cylinder 309 and is slidably connected to the drag reduction hydraulic cylinder 309, the lower end of the drag reduction hydraulic rod 308 is connected to one side of the connecting plate 312, the other side of the connecting plate 312 is connected to the lower end of the slider 311, the rear end of the slide rail 313 is connected to the middle part of the front end of the mounting base plate 306, the rear end of the slider 311 is slidably connected to the front end of the slide rail 313, and the rear end of the rack 310 is connected to the front end of the slider 311. The driving component is provided with the drag reduction hydraulic rod 308 and the drag reduction hydraulic cylinder 309, and adopts a hydraulic drive mode, so that the movement is more stable and the movement efficiency is higher. The connecting plate 312 is provided to facilitate the connection and transmission of the drag reduction hydraulic rod 308 and the slider 311, and the slider 311 and the slide rail 313 are provided to further stably drive the rack 310 to move.

[0076] Each automatic door 6 includes a driver 601, a transmission belt 602, a connecting side plate 603, a sliding guide rail 604, a sealing door 605 and a sliding side plate 606;

[0077] Each hatch 5 is provided with a sliding guide rail 604 on both sides of the rear end, a sealing door 605 is provided at the rear end of the hatch 5, and a plurality of sliding side plates 606 are provided at intervals on both sides of the front end of the sealing door 605, and each sliding side plate 606 is slidably connected to the sliding guide rail 604. A driver 601 is provided at the upper and lower parts of one side of the rear end of the hatch 5, and the upper and lower ends of the transmission belt 602 are respectively rotatably connected to the rear ends of the two drivers 601. A plurality of connecting side plates 603 are provided at one side of the rear end of the sealing door 605, and one side of the plurality of connecting side plates 603 is connected to one side of the transmission belt 602. The automatic hatch 6 is provided with a driver 601 and a transmission belt 602, and adopts belt drive, has low movement noise, is provided with overload protection, is provided with a connecting side plate 603, and is convenient for the sealing door 605 to be connected and driven with the transmission belt 602, and is provided with a sliding guide rail 604 and a sliding side plate 606, and is convenient for assisting the movement of the sealing door 605, and further improves the movement stability.

[0078] The sliding assembly includes an upper mounting seat 101, a lower mounting seat 107, a longitudinal slide rail 112, a longitudinal slide plate 114, a longitudinal connecting plate 110 and a longitudinal connecting side plate 106;

[0079] The lower end of the upper mounting seat 101 is connected to the upper end of the longitudinal slide rail 112, the upper end of the lower mounting seat 107 is connected to the lower end of the longitudinal slide rail 112, the rear end of the longitudinal slide plate 114 is slidably connected to the front end of the longitudinal slide rail 112, the rear end of the longitudinal connecting plate 110 is connected to the front end of the longitudinal slide plate 114, and the front inner side of the longitudinal connecting side plate 106 is connected to one side of the longitudinal connecting plate 110. The sliding assembly is provided with the upper mounting seat 101 and the lower mounting seat 107, which is convenient for connecting with the hull, and is also convenient for installing and fixing the upper transmission motor 102 and the lower transmission motor 113. The longitudinal slide rail 112 and the longitudinal slide plate 114 are provided to assist the movement of the longitudinal connecting plate 110 and further improve the movement stability. The longitudinal connecting plate 110 is provided to facilitate the connection with the transverse telescopic mechanism 2, and the longitudinal connecting side plate 106 is provided to facilitate the connection with the transmission assembly for transmission.

[0080] The transmission assembly includes an upper transmission motor 102, an upper transmission gear 109, an upper transmission roller 104, a crawler belt 103, a lower transmission motor 113, a lower transmission gear 108, a lower transmission roller 111 and a connecting rod 105;

[0081] The upper transmission motor 102 is arranged inside the upper mounting seat 101, the lower transmission motor 113 is arranged inside the lower mounting seat 107, the upper transmission gear 109 is arranged on one side of the upper transmission motor 102, and the lower transmission gear 108 is arranged on one side of the lower transmission motor 113. The upper transmission roller 104 is rotatably connected to the upper inner part of the rear end of the longitudinally connected side plate 106 through the connecting rod 105, and the lower transmission roller 111 is rotatably connected to the lower inner part of the rear end of the longitudinally connected side plate 106 through the connecting rod 105. The upper end of the crawler 103 is connected to the lower end of the upper mounting seat 101, and the lower end of the crawler 103 is connected to the upper end of the lower mounting seat 107. The upper part of the crawler 103 passes through the upper transmission roller 104 and the upper transmission gear 109 respectively and is rotatably connected to the upper transmission roller 104 and the upper transmission gear 109, and the lower part of the crawler 103 passes through the lower transmission roller 111 and the lower transmission gear 108 respectively and is rotatably connected to the lower transmission roller 111 and the lower transmission gear 108. The transmission assembly is provided with an upper transmission gear 109, a lower transmission gear 108 and a crawler track 103, and adopts a meshing transmission method with a large transmission ratio and high transmission efficiency. An upper transmission roller 104, a lower transmission roller 111 and a connecting rod 105 are provided to facilitate connection with the longitudinal connecting side plate 106, thereby driving the longitudinal connecting plate 110 to move.

[0082] The telescopic assembly includes an upper connecting frame 201, a lower connecting frame 206, an X-shaped telescopic frame 210, a rotating support 202, a connecting roller 209, a connecting shaft 208 and an L-shaped side plate 211;

[0083] The rear end of the lower connecting frame 206 is connected to the front end of the longitudinal connecting plate 110, and the front end of the upper connecting frame 201 is connected to the rear end of the mounting base plate 306. There are two X-shaped telescopic frames 210, which are symmetrically distributed between the upper connecting frame 201 and the lower connecting frame 206. The upper and lower sides of one end of each X-shaped telescopic frame 210 are respectively rotatably connected to the upper connecting frame 201 and the lower connecting frame 206 through the rotating support 202. The upper and lower sides of the other end of each X-shaped telescopic frame 210 are provided with connecting rollers 209. Each connecting roller The wheel 209 is rotatably connected to each X-shaped telescopic frame 210 through the connecting shaft 208. L-shaped side plates 211 are provided on both sides of the upper connecting frame 201 and the lower connecting frame 206. One end of the upper connecting roller 209 is slidably connected to the upper connecting frame 201, and the other end of the upper connecting roller 209 is slidably connected to the inner side of the L-shaped side plate 211; one end of the lower connecting roller 209 is slidably connected to the lower connecting frame 206, and the other end of the lower connecting roller 209 is slidably connected to the inner side of the L-shaped side plate 211. The telescopic assembly is provided with an upper connecting frame 201 to facilitate connection with the wedge-shaped drag reduction mechanism, a lower connecting frame 206 to facilitate connection with the longitudinal moving mechanism 1, an X-shaped telescopic frame 210 to facilitate driving the upper connecting frame 201 to telescope, and an X-shaped telescopic frame 210 to facilitate auxiliary X-shaped telescopic frame 210 telescope, thereby further improving telescopic stability.

[0084] The hydraulic drive assembly includes a connecting spindle 203, a connecting support rod 207, a transverse telescopic rod 204 and a transverse hydraulic cylinder 205;

[0085] The two sides of the connecting main shaft 203 pass through the middle ends of the two X-type telescopic frames 210 and are rotatably connected with the two X-type telescopic frames 210. A connecting support rod 207 is provided between the front and rear ends of the two X-type telescopic frames 210. Two transverse hydraulic cylinders 205 are provided. The two transverse hydraulic cylinders 205 are symmetrically distributed on one side of the front end of the lower connecting frame 206, and the rear end of each transverse hydraulic cylinder 205 is correspondingly rotatably connected with the front end of the lower connecting frame 206. The front end of each transverse hydraulic cylinder 205 is provided with a transverse telescopic rod 204. The rear end of each transverse telescopic rod 204 is correspondingly arranged inside the transverse hydraulic cylinder 205 and is slidably connected to the transverse hydraulic cylinder 205. The front end of each transverse telescopic rod 204 is correspondingly rotatably connected with one side of the connecting main shaft 203. The hydraulic drive component is provided with a transverse telescopic rod 204 and a transverse hydraulic cylinder 205. The hydraulic drive mode is adopted, and the movement is more stable and the movement efficiency is higher. The connecting main shaft 203 is provided to facilitate the extension and retraction of the X-type telescopic frame 210. The connecting support rod 207 is provided to improve the stability between the two X-type telescopic frames 210.

[0086] The method for using the wedge-shaped drag reduction device for a ship moon pool is as follows:

[0087] S1, equipment debugging, start the upper transmission motor 102 and the lower transmission motor 113 at the same time to drive the crawler 103 to slide, check whether the longitudinal slide plate 114 slides, whether the sliding is smooth, check whether there is a large area of ​​water leakage at the connection between the sealing door 605 and the hatch 5, start the driver 601 to drive the transmission belt 602 to slide, and the transmission belt 602 drives the sealing door 605 to move downward. After the sealing door 605 moves to the extreme position, check whether the upper end of the sealing door 605 is level with the lower end of the hatch 5, start the hydraulic drive assembly, check whether the telescopic assembly is extended horizontally, start the drive assembly, and check whether the wedge-shaped drag reduction plate 303 rotates;

[0088] S2, simultaneously start the upper transmission motor 102 and the lower transmission motor 113 to respectively drive the upper transmission gear 109 and the lower transmission gear 108 to rotate, the upper transmission gear 109 and the lower transmission gear 108 simultaneously drive the crawler 103 to slide, the crawler 103 drives the longitudinal slide 114 to slide vertically, and the longitudinal slide 114 drives the wedge-shaped drag reduction mechanism 3 to move to the specified position;

[0089] S3, simultaneously starting the two drivers 601 to drive the transmission belt 602 to rotate, and the transmission belt 602 rotates to drive the sealing door 605 to slide downward to a specified position;

[0090] S4, simultaneously start the two transverse hydraulic cylinders 205 to drive the transverse telescopic rods 204 to extend forward, the two transverse telescopic rods 204 drive the connecting spindle 203 to move forward, the connecting spindle 203 drives the two X-shaped telescopic frames 210 to move to the specified position, and the wedge-shaped drag reduction mechanism 3 passes through the hatch 5;

[0091] S5, start the drag reduction hydraulic cylinder 309 to drive the drag reduction hydraulic rod 308 to extend, the drag reduction hydraulic rod 308 drives the slider 311 to slide, the slider 311 drives the rotating gear 314 to rotate an angle through the rack 310, and the rotating gear 314 drives the wedge-shaped drag reduction plate 303 to rotate to an optimal angle through the rotating shaft 304.

[0092] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field of the invention before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A wedge-shaped drag reduction device for a ship moon pool, characterized in that: The invention comprises a moon pool (4), a longitudinal moving mechanism (1), a transverse telescopic mechanism (2), a wedge-shaped drag reduction mechanism (3) and an automatic hatch (6); the inner walls around the moon pool (4) are provided with a plurality of hatches (5) distributed at intervals; the rear end of each hatch (5) is provided with an automatic hatch (6); the outer sides around the moon pool (4) are provided with longitudinal moving mechanisms (1); the front end of each longitudinal moving mechanism (1) is provided with a transverse telescopic mechanism (2); the front end of each transverse telescopic mechanism (2) is provided with a wedge-shaped drag reduction mechanism (3); and each wedge-shaped drag reduction mechanism (3) is matched with a plurality of hatches (5); Each of the wedge-shaped drag reduction mechanisms (3) comprises a mounting base plate (306), a drive assembly, a rotation assembly and a drag reduction assembly, the rear end of the mounting base plate (306) being connected to the transverse telescopic mechanism, the drive assembly being arranged at one side of the front end of the mounting base plate (306), the rotation assembly being arranged at the middle of the front end of the mounting base plate (306), the drag reduction assembly being arranged at the other side of the front end of the mounting base plate (306), and the drive assembly and the drag reduction assembly being connected for transmission via the rotation assembly, and a protective shell (301) being arranged on the outside of the drive assembly and the rotation assembly; Each of the longitudinal movement mechanisms (1) comprises a transmission assembly and a sliding assembly, wherein the rear end of the transmission assembly is connected to the hull, the sliding assembly is arranged at the front end of the transmission assembly, and the transmission assembly is connected to the sliding assembly for transmission; Each of the transverse telescopic mechanisms (2) comprises a telescopic component and a hydraulic drive component, the hydraulic drive component being arranged inside the telescopic component and connected to the telescopic component for transmission, the front end of the telescopic component being connected to the rear end of the mounting base plate (306), and the rear end of the telescopic component being connected to the front end of the sliding component; The drag reduction assembly comprises a wedge-shaped drag reduction plate (303), a connecting clamp plate (302) and a baffle plate (307); the baffle plate (307) is arranged at the upper portion of the other side of the front end of the mounting base plate (306); the lower end of the connecting clamp plate (302) is connected to the middle portion of the upper end of the wedge-shaped drag reduction plate (303); and an oblique opening is provided on the inner side of the lower end of the wedge-shaped drag reduction plate (303); The rotating assembly comprises a rack (310), a rotating gear (314), a rotating shaft (304) and a mounting support (305); The rotating shaft (304) is arranged at the middle of the other side of the front end of the mounting base plate (306), and the two sides of the rotating shaft (304) are correspondingly rotatably connected to the mounting base plate (306) via the mounting bracket (305); the upper end of the connecting clamp plate (302) passes through the rotating shaft (304) and is detachably connected to the middle end of the rotating shaft (304); the rotating gear (314) is arranged on one side of the rotating shaft (304), and the front end of the rack (310) is meshedly connected to the rotating gear (314); The driving assembly comprises a drag-reducing hydraulic rod (308), a drag-reducing hydraulic cylinder (309), a connecting plate (312), a sliding block (311) and a sliding rail (313); The rear end of the drag reduction hydraulic cylinder (309) is connected to the upper part of one side of the front end of the mounting base plate (306); the upper end of the drag reduction hydraulic rod (308) is arranged inside the drag reduction hydraulic cylinder (309) and is slidably connected to the drag reduction hydraulic cylinder (309); the lower end of the drag reduction hydraulic rod (308) is connected to one side of a connecting plate (312); the other side of the connecting plate (312) is connected to the lower end of a slider (311); the rear end of the slide rail (313) is connected to the middle part of the front end of the mounting base plate (306); the rear end of the slider (311) is slidably connected to the front end of the slide rail (313); and the rear end of the rack (310) is connected to the front end of the slider (311); Each of the automatic cabin doors (6) comprises a driver (601), a transmission belt (602), a connecting side plate (603), a sliding guide rail (604), a sealing door (605) and a sliding side plate (606); Sliding guide rails (604) are provided on both sides of the rear end of each hatch (5); the sealing door (605) is arranged at the rear end of the hatch (5); and a plurality of sliding side panels (606) are provided on both sides of the front end of the sealing door (605) at intervals; each of the sliding side panels (606) is slidably connected to the sliding guide rails (604); a driver (601) is provided at the upper and lower parts of one side of the rear end of the hatch (5); the upper and lower ends of the transmission belt (602) are rotatably connected to the rear ends of the two drivers (601) respectively; and a plurality of connecting side panels (603) are provided at one side of the rear end of the sealing door (605); one side of the plurality of connecting side panels (603) is connected to one side of the transmission belt (602) at intervals.

2. A wedge-shaped drag reduction device for a ship moon pool according to claim 1, characterized in that: The sliding assembly comprises an upper mounting seat (101), a lower mounting seat (107), a longitudinal slide rail (112), a longitudinal slide plate (114), a longitudinal connecting plate (110) and a longitudinal connecting side plate (106); The lower end of the upper mounting seat (101) is connected to the upper end of the longitudinal slide rail (112), the upper end of the lower mounting seat (107) is connected to the lower end of the longitudinal slide rail (112), the rear end of the longitudinal slide plate (114) is slidably connected to the front end of the longitudinal slide rail (112), the rear end of the longitudinal connecting plate (110) is connected to the front end of the longitudinal slide plate (114), and the inner side of the front end of the longitudinal connecting side plate (106) is connected to one side of the longitudinal connecting plate (110).

3. A wedge-shaped drag reduction device for a ship moon pool according to claim 2, characterized in that: The transmission assembly comprises an upper transmission motor (102), an upper transmission gear (109), an upper transmission roller (104), a crawler belt (103), a lower transmission motor (113), a lower transmission gear (108), a lower transmission roller (111) and a connecting rod (105); The upper transmission motor (102) is arranged inside the upper mounting seat (101), the lower transmission motor (113) is arranged inside the lower mounting seat (107), the upper transmission gear (109) is arranged on one side of the upper transmission motor (102), the lower transmission gear (108) is arranged on one side of the lower transmission motor (113), the upper transmission roller (104) is rotatably connected to the upper inner portion of the rear end of the longitudinally connected side plate (106) via a connecting rod (105), and the lower transmission roller (111) is rotatably connected to the lower inner portion of the rear end of the longitudinally connected side plate (106) via a connecting rod (1 05) is rotatably connected, the upper end of the crawler (103) is connected to the lower end of the upper mounting seat (101), the lower end of the crawler (103) is connected to the upper end of the lower mounting seat (107), the upper part of the crawler (103) passes through the upper transmission roller (104) and the upper transmission gear (109) respectively and is rotatably connected to the upper transmission roller (104) and the upper transmission gear (109), and the lower part of the crawler (103) passes through the lower transmission roller (111) and the lower transmission gear (108) respectively and is rotatably connected to the lower transmission roller (111) and the lower transmission gear (108).

4. A wedge-shaped drag reduction device for a ship moon pool according to claim 3, characterized in that: The telescopic assembly comprises an upper connecting frame (201), a lower connecting frame (206), an X-shaped telescopic frame (210), a rotating support (202), a connecting roller (209), a connecting rotating shaft (208) and an L-shaped side plate (211); The rear end of the lower connecting frame (206) is connected to the front end of the longitudinal connecting plate (110), and the front end of the upper connecting frame (201) is connected to the rear end of the mounting base plate (306). Two X-shaped telescopic frames (210) are provided, and the two X-shaped telescopic frames (210) are symmetrically distributed between the upper connecting frame (201) and the lower connecting frame (206). The upper and lower sides of one end of each X-shaped telescopic frame (210) are respectively rotatably connected to the upper connecting frame (201) and the lower connecting frame (206) via a rotating support (202). The upper and lower sides of the other end of each X-shaped telescopic frame (210) are provided with connecting rollers (209). Each of the connecting rollers (209) is rotatably connected to each X-shaped telescopic frame (210) via a connecting shaft (208); both sides of the upper connecting frame (201) and both sides of the lower connecting frame (206) are provided with L-shaped side plates (211); one end of the upper connecting roller (209) is slidably connected to the upper connecting frame (201), and the other end of the upper connecting roller (209) is slidably connected to the inner side of the L-shaped side plate (211); one end of the lower connecting roller (209) is slidably connected to the lower connecting frame (206), and the other end of the lower connecting roller (209) is slidably connected to the inner side of the L-shaped side plate (211).

5. A wedge-shaped drag reduction device for a ship moon pool according to claim 4, characterized in that: The hydraulic drive assembly comprises a connecting main shaft (203), a connecting support rod (207), a transverse telescopic rod (204) and a transverse hydraulic cylinder (205); Both sides of the connecting main shaft (203) pass through the middle ends of the two X-shaped telescopic frames (210) and are rotatably connected to the two X-shaped telescopic frames (210). A connecting support rod (207) is provided between the front and rear ends of both sides of the two X-shaped telescopic frames (210). Two transverse hydraulic cylinders (205) are provided. The two transverse hydraulic cylinders (205) are symmetrically distributed on one side of the front end of the lower connecting frame (206). The rear end of each transverse hydraulic cylinder (205) is rotatably connected to the front end of the lower connecting frame (206). The front end of each transverse hydraulic cylinder (205) is provided with a transverse telescopic rod (204). The rear end of each transverse telescopic rod (204) is correspondingly arranged inside the transverse hydraulic cylinder (205) and is slidably connected to the transverse hydraulic cylinder (205). The front end of each transverse telescopic rod (204) is rotatably connected to one side of the connecting main shaft (203).

6. The method for using the wedge-shaped drag reduction device for a ship moon pool according to claim 5, characterized in that: The following steps are involved: S1, equipment debugging, simultaneously starting the upper transmission motor (102) and the lower transmission motor (113) to drive the crawler (103) to slide, checking whether the longitudinal slide plate (114) slides, whether the sliding is smooth, checking whether there is a large area of ​​water leakage at the connection between the sealing door (605) and the hatch (5), starting the driver (601) to drive the transmission belt (602) to slide, the transmission belt (602) drives the sealing door (605) to move downward, after the sealing door (605) moves to the limit position, checking whether the upper end of the sealing door (605) is flush with the lower end of the hatch (5), starting the hydraulic drive assembly, checking whether the telescopic assembly is extended horizontally, starting the drive assembly, and checking whether the wedge-shaped drag reduction plate (303) rotates an angle; S2, simultaneously starting the upper transmission motor (102) and the lower transmission motor (113) to respectively drive the upper transmission gear (109) and the lower transmission gear (108) to rotate, the upper transmission gear (109) and the lower transmission gear (108) simultaneously drive the crawler belt (103) to slide, the crawler belt (103) drives the longitudinal slide plate (114) to slide vertically, and the longitudinal slide plate (114) drives the wedge-shaped drag reduction mechanism (3) to move to a specified position; S3, simultaneously starting the two drivers (601) to drive the transmission belt (602) to rotate, and the rotation of the transmission belt (602) drives the sealing door (605) to slide downward to a specified position; S4, simultaneously starting two transverse hydraulic cylinders (205) to drive the transverse telescopic rod (204) to extend forward, the two transverse telescopic rods (204) drive the connecting spindle (203) to move forward, the connecting spindle (203) drives the two X-shaped telescopic frames (210) to move to a specified position, and the wedge-shaped drag reduction mechanism (3) passes through the hatch (5); S5, starting the drag reduction hydraulic cylinder (309) to drive the drag reduction hydraulic rod (308) to extend, the drag reduction hydraulic rod (308) drives the slider (311) to slide, the slider (311) drives the rotating gear (314) to rotate an angle through the rack (310), and the rotating gear (314) drives the wedge-shaped drag reduction plate (303) to rotate to an optimal angle through the rotating shaft (304).

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