A passive wave compensation device for sea surface operations

Abstract

The present invention discloses a passive wave compensation device for sea surface operations, which relates to the field related to offshore platform-based observation stations. The device comprises a retractable device, wherein a suspension rope is installed on the boom of the retractable device, and the bottom of the suspension rope is connected to an adjustment seat, and the bottom of the adjustment seat is connected to the middle part of the hoisting plate through a universal joint; the bottom of the adjustment seat is universally connected to a first sleeve at equal angles, and a small-amplitude compensation component is provided on the outside of the first sleeve, and a large-amplitude compensation component is provided on the top and bottom of the adjustment seat. During use, the passive wave compensation device for sea surface operations adopts a multi-degree-of-freedom compensation mechanism to better cope with the influence of waves. The passive design does not require a complex active control system and a large amount of energy consumption. Through the cooperation of hard compensation and elastic damping elements, different compensation modes can be used for waves of different sizes, so that the device automatically switches the compensation mode under different amplitudes, thereby improving overall stability.

Description

Technical Field

[0001] The present invention relates to the technical field related to offshore platform-based observation stations, and in particular to a passive wave compensation device for sea surface operations. Background Art

[0002] Offshore platform-based observation stations can observe hydrological elements such as ocean currents, waves, sea surface temperature, salinity, and sea level height, which are helpful for marine scientific research, marine engineering design, and marine resource development. They may also be used for marine ecological environment observations, geological observations, etc., or provide special observation services for specific marine activities and projects. During marine observation operations at offshore platform-based observation stations, the continuous disturbance of sea surface waves seriously affects the stability of equipment and operation accuracy.

[0003] To address the above-mentioned drawbacks, the prior art (Chinese patent publication number CN101948002B, publication date April 10, 2013) discloses a composite heave compensation device. A winch is connected to a base plate via a cylinder pulley assembly. The cylinder pulley assembly includes a fixed pulley, a movable pulley, and a plunger-type heave compensation cylinder. The cylinder also includes a base. The plunger-type heave compensation cylinder is mounted on the base. The plunger-type heave compensation cylinder includes a cylinder body and a plunger movable within the cylinder body. The fixed pulley is fixed to the bottom end of the cylinder body, and the movable pulley is mounted on the plunger. An accumulator is connected to the cylinder body via an oil pipe. An outer position switch and an inner position switch for activating drift compensation are also fixed to the base. The plunger is provided with a bracket that can activate the outer and inner position switches. When the bracket is in a position between the outer and inner position switches, it is in a passive compensation phase, in which no energy is consumed. When the bracket is in a position outside the passive compensation phase, it is in active compensation, which consumes energy but is rare, and has a wide compensation range.

[0004] During use, the above-mentioned solution adopts a mechanical rigid compensation method of the cylinder and the plunger to compensate for waves. The compensation effect is relatively rigid and the degree of freedom of compensation is also very limited. In addition, when the offshore platform-based observation station is actually operating at sea, the impact of the wave size on the offshore platform-based observation station is different. The wave compensation effect of a single mechanism is limited. These structures can only alleviate the slight shaking of the platform to a certain extent. For large wave movements under medium and high sea conditions, they cannot effectively suppress the shaking of the observation equipment, thereby causing difficulties for offshore operations. Summary of the Invention

[0005] The purpose of the present invention is to provide a passive wave compensation device for sea surface operations to solve the problem of the existing passive wave compensation device for sea surface operations proposed in the above-mentioned background technology. During use, when compensating for waves, a mechanical hard compensation method of a cylinder and a plunger is adopted. The compensation effect is relatively rigid and the degree of freedom of compensation is also very limited. In addition, when the offshore platform-based observation station is actually operating at sea, the impact of the wave size on the offshore platform-based observation station is different. The wave compensation effect of a single mechanism is limited. These structures can only alleviate the slight shaking of the platform to a certain extent. For large wave movements under medium and high sea conditions, the shaking of the observation equipment cannot be effectively suppressed, thereby causing difficulties in conducting offshore operations.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a passive wave compensation device for sea surface operations, comprising a retractable device, a suspension rope being installed on the boom of the retractable device, an adjustment seat being connected to the bottom of the suspension rope, the bottom of the adjustment seat being connected to the middle of a lifting plate via a universal joint, and a fixing belt being provided at the bottom of the lifting plate.

[0007] The bottom of the adjustment seat is universally connected to a first sleeve at an equal angle, the bottom of the first sleeve is slidably connected to a first sliding column, the first sliding column is universally connected to the top of the lifting plate, and a small-amplitude compensation component is provided on the outside of the first sleeve.

[0008] The outer side of the bottom of the adjustment seat is provided with a receiving groove at an equal angle, and a movable tooth plate is slidably connected in the receiving groove. A protrusion is installed in the middle of the front and rear sides of the movable tooth plate. The protrusion is slidably connected to the limiting groove through a connecting spring. The limiting groove is opened inside the adjustment seat, and a large-amplitude compensation component is provided at the top and bottom of the adjustment seat.

[0009] Furthermore, the small amplitude compensation component includes a vertical plate installed at an equal angle on the top of the lifting plate, a damping buffer spring is installed on the side of the vertical plate, the end of the damping buffer spring is connected to an end plate, and the end plate is set toward the first sleeve.

[0010] Furthermore, the end plate is configured as a semicircular structure, the outer side of the end plate conflicts with the flange, the flange is configured as two fixed rings with different diameters, and the end plate forms a conflict compensation structure with the flange through a damping buffer spring.

[0011] Furthermore, the flange is set to piezoelectric material, the lower diameter of the flange is small and the upper diameter is large, the end plate contacts the lower part of the flange during small waves, and the end plate contacts the upper part of the flange during large waves, a permanent magnet is installed on the top of the first sliding column, an electromagnet is provided on the inner top of the first sleeve, and energy storage batteries and electromagnetic coils are distributed and installed on the inner side of the top of the first sleeve, and the magnetic poles of the permanent magnet and the opposite sides of the electromagnet are the same.

[0012] Furthermore, the large-amplitude compensation component includes a gear that is equiangularly rotated and connected to the middle part of the inner side of the adjustment seat, the gear is meshed with the movable tooth plate, the movable tooth plate forms a telescopic sliding structure through a protrusion and a connecting spring, and the gear forms a rotating structure through the movable tooth plate.

[0013] Furthermore, the front and rear sides of the shaft of the gear are connected to a first screw through a bevel gear connector, and the first screw is connected to the bottom of the adjustment seat by rotating in groups at equal angles. The outer side of the first screw is threadedly connected to a first sleeve rod, and the first sleeve rod is set to a rectangular structure, and the bottom of the first sleeve rod passes through the bottom of the adjustment seat.

[0014] Furthermore, a first base plate is installed at the bottom of the first sleeve rod, a second base plate is arranged below the first base plate, a second sleeve is symmetrically fixed to the top of the second base plate, a second sliding column is slidably connected in the second sleeve, the top of the second sliding column is fixedly connected to the first base plate, and a damping shock-absorbing spring is installed between the second sleeve and the second sliding column.

[0015] Furthermore, the bottom of the second bottom plate is located above the hanging plate, and the first sleeve drives the first bottom plate and the second bottom plate through the first screw to form a vertical sliding structure.

[0016] Furthermore, a second screw is integrally installed on the top of the first screw, and the outer side of the second screw is threadedly connected to a second sleeve rod, which slides through and is connected to the top of the adjustment seat, and a sliding roller is rotatably connected between the tops of adjacent second sleeve rods.

[0017] Furthermore, the thread direction of the second screw is the same as that of the first screw, and the top of the sliding roller conflicts with the middle of the suspension rope.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This passive wave compensation device for sea surface operations adopts a multi-degree-of-freedom compensation mechanism during use, allowing offshore platform-based observation stations to better cope with the impact of waves. The passive design does not require a complex active control system and a large amount of energy consumption. Through the combination of rigid compensation and elastic damping elements, different compensation modes can be used for waves of different sizes, allowing the device to automatically switch compensation modes under different amplitudes, thereby improving overall stability.

[0020] 1. Furthermore, the retracting and releasing device carries the lifting plate through the suspension rope and the adjustment seat, and places it on the sea for corresponding monitoring operations. The adjustment seat is connected to the lifting plate through a universal joint, so that the subsequent passive compensation of waves can have multiple degrees of freedom and better cope with the impact of waves.

[0021] 2. Furthermore, when the hoisting plate is affected by a small amplitude of waves, the first sliding column under the first sleeve at the bottom of the adjusting seat will be driven to slide. When the first sliding column slides, the damping buffer spring on the vertical plate will make the end plate contact the lower outer side of the flange, from the lowest position to the middle of the lower outer side, thereby compressing the damping buffer spring, thereby generating lateral resistance force, thereby assisting in compensating for the waves and quickly calming the shaking. When large waves invade in the later stage, the movement of the first sliding column becomes larger, and the displacement will also increase, thereby causing the damping buffer spring and the end plate to gradually contact the convex part. The upper outer side of the flange will come into contact with the end plate, and the compression of the damping buffer spring will increase, thereby providing a greater lateral resistance force. The greater the force of the resistance between the end plate and the flange, the more electricity the flange will generate, and the electricity will be stored in the energy storage battery. The energy storage battery will drive the electromagnetic coil to generate a magnetic field, thereby increasing the magnetic force of the electromagnet. When the magnetic force of the electromagnet increases, the repulsive force between the permanent magnet with the same magnetic pole will also increase, thereby providing a large repulsive force on the tilted side, causing the lifting plate to rotate, so that the lifting plate can quickly compensate for large waves and maintain stability during use, thereby maintaining the stability of the lifting plate.

[0022] 3. Furthermore, when passively affected by larger waves, the range of movement of the lifting plate becomes larger, and the whole plate tilts, which then squeezes the tooth plate at the corresponding position at the bottom of the adjustment seat. After being pressed, the tooth plate slides toward the inside of the storage slot. At the same time, the tooth plate drives the gear to rotate after sliding, and the gear rotates and drives the first screw to rotate synchronously through the bevel gear connector. After the first screw rotates, it drives the first set of rods below to extend. When the first bottom plate and the second bottom plate at the bottom of the first set of rods are in the initial state, the second sleeve and the second sliding column can be used in conjunction with the damping shock-absorbing spring to perform auxiliary compensation for small waves. When encountering large waves later, on the basis of basic resistance, the first set of rods drives the first bottom plate and the second bottom plate to move downward as a whole, thereby pressing down and leveling the lifting plate on the tilted side, so that it can quickly return to the center after tilting.

[0023] 4. Furthermore, the rotation of the first screw drives the synchronous rotation of the second screw, and the rotation of the second screw drives the second set of rods to move downward, thereby lowering the position where the sliding roller and the suspension rope interfere with each other, thereby helping to increase the speed of leveling the hanging plate. After leveling, the tooth plate is reset, and the first set of rods and the second set of rods are also moved upward and reset, thereby maintaining the overall stability of the adjustment plate and the hanging plate, and improving the efficiency and quality of heave compensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall bottom-up structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the front view structure of the compensation device of the present invention;

[0026] Figure 3 This is a top plan view of the hanging plate of the present invention;

[0027] Figure 4 This is a schematic diagram of the bottom structure of the adjustment seat of the present invention when viewed from above;

[0028] Figure 5 This is a schematic diagram of the cross-sectional structure of the middle portion of the hanging plate of the present invention;

[0029] Figure 6 This is a schematic cross-sectional view of the middle portion of the adjustment seat of the present invention;

[0030] Figure 7 This is a schematic diagram of a partial explosion inside the adjustment seat of the present invention;

[0031] Figure 8 This is a schematic diagram of the connection structure of the movable tooth plate, gear, first screw and second screw of the present invention;

[0032] Figure 9 For the present invention Figure 7 Schematic diagram of the partially enlarged structure.

[0033] In the figure: 1. Retractable device; 2. Suspension rope; 3. Adjustment seat; 4. Universal joint; 5. Lifting plate; 6. Fixing belt; 7. First sleeve; 8. First slide column; 9. Permanent magnet; 10. Vertical plate; 11. Damping buffer spring; 12. End plate; 13. Flange; 14. Movable tooth plate; 15. Receiving groove; 16. Bump; 17. Connecting spring; 18. Limiting groove; 19. Gear; 20. First screw; 21. First set of rods; 22. First bottom plate; 23. Second bottom plate; 24. Second sleeve; 25. Second slide column; 26. Damping shock-absorbing spring; 27. Second screw; 28. Second set of rods; 29. ​​Sliding roller; 30. Electromagnet; 31. Energy storage battery; 32. Electromagnetic coil DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1-Figure 2 The present invention provides the following technical solution: a passive wave compensation device for sea surface operations, comprising a retractable device 1, a suspension rope 2 is installed on the boom of the retractable device 1, the bottom of the suspension rope 2 is connected to an adjustment seat 3, the bottom of the adjustment seat 3 is connected to the middle of a lifting plate 5 through a universal joint 4, and a fixing belt 6 is provided at the bottom of the lifting plate 5.

[0036] When in use, the equipment used in the offshore platform-based observation station is installed on the bottom of the lifting plate 5 through the fixing belt 6. The retracting device 1 carries the lifting plate 5 through the suspension rope 2 and the adjustment seat 3, and is placed on the sea for corresponding monitoring operations. The adjustment seat 3 is connected to the lifting plate 5 through the universal joint 4, so that the subsequent passive compensation for waves can have multiple degrees of freedom and better cope with the impact of waves.

[0037] On the basis of the above solution, the damping buffer spring 11 and the flange 13 are also disclosed. Figure 3-Figure 5 As shown, its specific structure is as follows: the bottom of the adjustment seat 3 is universally connected with a first sleeve 7 at an equal angle, the bottom of the first sleeve 7 is slidably connected with a first slide column 8, the first slide column 8 is universally connected to the top of the hanging plate 5, and a small amplitude compensation component is provided on the outside of the first sleeve 7. The small amplitude compensation component includes a vertical plate 10 installed at an equal angle on the top of the hanging plate 5, a damping buffer spring 11 is installed on the side of the vertical plate 10, and the end of the damping buffer spring 11 is connected to an end plate 12, which is arranged toward the first sleeve 7. The end plate 12 is arranged in a semicircular structure, and the outer side of the end plate 12 conflicts with the flange 13. The flange 13 is set as two fixed rings with different diameters of fixed connection. The end plate 12 forms a friction compensation structure with the flange 13 through the damping buffer spring 11. The flange 13 is set as a piezoelectric material. The lower diameter of the flange 13 is small and the upper diameter is large. When the waves are small, the end plate 12 conflicts with the lower part of the flange 13. When the waves are large, the end plate 12 conflicts with the upper part of the flange 13. A permanent magnet 9 is installed on the top of the first slide column 8, and an electromagnet 30 is provided on the inner top of the first sleeve 7. Energy storage batteries 31 and electromagnetic coils 32 are distributed and installed on the inner side of the top of the first sleeve 7. The magnetic poles of the permanent magnet 9 and the opposite sides of the electromagnet 30 are the same.

[0038] When the lifting plate 5 is passively affected by a small amplitude of the wave, the first sliding column 8 under the first sleeve 7 at the bottom of the adjustment seat 3 will be driven to slide. When the first sliding column 8 slides, the damping buffer spring 11 on the vertical plate 10 will make the end plate 12 contact the lower outer side of the flange 13, from the lowest position to the middle of the lower outer side, thereby compressing the damping buffer spring 11, thereby generating a lateral resistance force, thereby assisting in compensating for the waves and quickly calming the shaking. When large waves invade in the later period, the movement of the first sliding column 8 becomes larger, and the displacement will also increase, thereby causing the damping buffer spring 11 and the end plate 12 to gradually contact the flange 13, the compression of the damping buffer spring 11 will increase, thereby providing a greater lateral resistance force. The greater the force of the end plate 12 in contact with the flange 13, the more electricity the flange 13 generates, and the electricity is stored in the energy storage battery 31. The energy storage battery 31 will drive the electromagnetic coil 32 to generate a magnetic field, thereby increasing the magnetic force of the electromagnet 30. After the magnetic force of the electromagnet 30 increases, the repulsive force between the permanent magnet 9 with the same magnetic pole will also increase, thereby providing a large repulsive force on the tilted side, causing the lifting plate 5 to rotate, so that the lifting plate 5 can quickly compensate for large waves and maintain stability during use, thereby maintaining the stability of the lifting plate 5.

[0039] Example 2:

[0040] On the basis of the first embodiment, the first set of rods 21, the first base plate 22, the second base plate 23 and the damping spring 26 are also disclosed. Figure 2-Figure 4 、 Figure 6 and Figure 8-Figure 9As shown, its specific structure is as follows: a receiving groove 15 is provided at an equal angle on the outer side of the bottom of the adjustment seat 3, and a movable tooth plate 14 is slidably connected in the receiving groove 15. A protrusion 16 is installed in the middle of the front and rear sides of the movable tooth plate 14. The protrusion 16 is slidably connected to the limiting groove 18 through a connecting spring 17. The limiting groove 18 is provided inside the adjustment seat 3. A large-scale compensation component is provided at the top and bottom of the adjustment seat 3. The large-scale compensation component includes a gear 19 that is connected to the middle part of the inner side of the adjustment seat 3 at an equal angle. The gear 19 is meshed with the movable tooth plate 14. The movable tooth plate 14 forms a telescopic sliding structure through the protrusion 16 and the connecting spring 17. The gear 19 forms a rotating structure through the movable tooth plate 14. The front and rear sides of the shaft of the gear 19 are connected to the first screw 20 through a bevel gear connector. The first screw 20 are connected to the bottom of the adjusting seat 3 in a group rotation at equal angles. The outer side of the first screw rod 20 is threadedly connected to the first sleeve rod 21. The first sleeve rod 21 is set to a rectangular structure. The bottom of the first sleeve rod 21 passes through the bottom of the adjusting seat 3. The bottom of the first sleeve rod 21 is installed with a first base plate 22. A second base plate 23 is provided below the first base plate 22. A second sleeve 24 is symmetrically fixed to the top of the second base plate 23. A second sliding column 25 is slidably connected in the second sleeve 24. The top of the second sliding column 25 is fixedly connected to the first base plate 22. A damping shock-absorbing spring 26 is installed between the second sleeve 24 and the second sliding column 25. The bottom of the second base plate 23 is located above the lifting plate 5. The first sleeve rod 21 drives the first base plate 22 and the second base plate 23 through the first screw 20 to form a vertical sliding structure.

[0041] When the lifting plate 5 is in use, it moves with a larger amplitude and tilts as a whole, and then squeezes the movable tooth plate 14 at the corresponding position at the bottom of the adjustment seat 3. After the movable tooth plate 14 is pressed, it slides into the receiving groove 15. At the same time, the protrusion 16 moves synchronously in the limit groove 18 to compress the connecting spring 17, thereby maintaining the stability of the movement of the movable tooth plate 14. After the movable tooth plate 14 slides, it drives the gear 19 to rotate. After the gear 19 rotates, it drives the first screw 20 to rotate synchronously through the bevel gear connection. After the first screw 20 rotates, it drives the first set of rods 21 below to extend. When the first base plate 22 and the second base plate 23 at the bottom of the first set of rods 21 are in the initial state, the second sleeve 24 and the second sliding column 25 can cooperate with the damping shock-absorbing spring 26 to perform auxiliary compensation for small waves. When encountering large waves later, on the basis of basic resistance, the first set of rods 21 drives the first base plate 22 and the second base plate 23 to move downward as a whole, thereby pressing down and leveling the lifting plate 5 on the tilted side, so that it can quickly return to the center after tilting.

[0042] Example 3:

[0043] On the basis of the second embodiment, a second set of rods 28 and sliding rollers 29 are also disclosed. Figures 1-4 and Figure 6-Figure 9As shown, its specific structure is as follows: a second screw rod 27 is integrally installed on the top of the first screw rod 20, and the outer side of the second screw rod 27 is threadedly connected to a second sleeve rod 28, and the second sleeve rod 28 slides through and is connected to the top of the adjustment seat 3, and a sliding roller 29 is rotatably connected between the tops of adjacent second sleeve rods 28. The thread direction of the second screw rod 27 is the same as that of the first screw rod 20, and the top of the sliding roller 29 conflicts with the middle part of the suspension rope 2.

[0044] During use, the first screw 20 rotates and drives the second screw 27 to rotate synchronously. After the second screw 27 rotates, it drives the second set of rods 28 to move downward, thereby lowering the position where the sliding roller 29 contacts the suspension rope 2, thereby helping to increase the leveling speed of the hanging plate 5. After leveling, the movable tooth plate 14 is reset, and the first set of rods 21 and the second set of rods 28 will also move up and reset, thereby maintaining the overall stability of the adjustment seat 3 and the hanging plate 5, and improving the efficiency and quality of wave compensation.

[0045] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0046] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A passive wave compensation device for sea surface operation, comprising a retracting device (1), a suspension rope (2) being installed on the boom of the retracting device (1), an adjustment seat (3) being connected to the bottom of the suspension rope (2), the bottom of the adjustment seat (3) being connected to the middle of a hoisting plate (5) via a universal joint (4), a fixing belt (6) being provided at the bottom of the hoisting plate (5), and equipment used in an offshore platform-based observation station being installed at the bottom of the hoisting plate (5) via the fixing belt (6); Its characteristics are: The bottom of the adjustment seat (3) is universally connected to a plurality of first sleeves (7), and the plurality of first sleeves (7) are arranged in a circular array at equal angles. The bottom of the first sleeve (7) is slidably connected to a first sliding column (8), and the first sliding column (8) is universally connected to the top of the hanging plate (5). A small-amplitude compensation component is provided on the outside of the first sleeve (7); The small amplitude compensation component comprises a plurality of vertical plates (10) mounted on the top of the hanging plate (5), the plurality of vertical plates (10) being arranged in an equiangular circular array, a damping buffer spring (11) being mounted on the side of the vertical plate (10), an end of the damping buffer spring (11) being connected to an end plate (12), and the end plate (12) being arranged toward the first sleeve (7); The end plate (12) is configured as a semicircular structure, and the outer side of the end plate (12) is in contact with the flange (13); The flange (13) is configured as a piezoelectric material. The flange (13) has a small diameter at the bottom and a large diameter at the top. When the waves are small, the end plate (12) contacts the bottom of the flange (13). When the waves are large, the end plate (12) contacts the top of the flange (13). A permanent magnet (9) is installed on the top of the first sliding column (8). An electromagnet (30) is provided on the inner top of the first sleeve (7). An energy storage battery (31) and an electromagnetic coil (32) are distributed and installed on the inner side of the top of the first sleeve (7). The magnetic poles of the permanent magnet (9) and the electromagnet (30) facing each other are the same. The outer side of the bottom of the adjustment seat (3) is provided with a plurality of receiving grooves (15), and the plurality of receiving grooves (15) are arranged in a circular array at equal angles. A movable tooth plate (14) is slidably connected in the receiving groove (15), and a protrusion (16) is installed in the middle of the front and rear sides of the movable tooth plate (14). The protrusion (16) is slidably connected to the limiting groove (18) through a connecting spring (17). The limiting groove (18) is provided inside the adjustment seat (3), and a large-amplitude compensation component is provided at the top and bottom of the adjustment seat (3); The large amplitude compensation component includes a plurality of gears (19) rotatably connected to the inner middle portion of the adjustment seat (3), the plurality of gears (19) being arranged in an equiangular circular array, and the gears (19) being meshed and connected with the movable tooth plate (14); The front and rear sides of the shaft of the gear (19) are connected to a first screw (20) via a bevel gear connector. A plurality of first screws (20) are arranged in an equiangular circular array and are rotatably connected to the bottom of the adjustment seat (3) in groups. The outer sides of the first screws (20) are threadedly connected to a first sleeve rod (21). A first base plate (22) is installed at the bottom of the first sleeve rod (21), a second base plate (23) is arranged below the first base plate (22), a second sleeve (24) is symmetrically fixed to the top of the second base plate (23), a second sliding column (25) is slidably connected in the second sleeve (24), the top of the second sliding column (25) is fixedly connected to the first base plate (22), a damping shock-absorbing spring (26) is installed between the second sleeve (24) and the second sliding column (25), and the bottom of the second base plate (23) is located above the hanging plate (5).

2. A passive wave compensation device for sea surface operations according to claim 1, characterized in that: The flange (13) is configured as two fixed rings having different fixed connection diameters, and the end plate (12) forms a conflict compensation structure with the flange (13) through the damping buffer spring (11).

3. The passive wave compensation device for sea surface operations according to claim 2, characterized in that: The first sleeve rod (21) is configured as a rectangular structure, and the bottom of the first sleeve rod (21) penetrates to the bottom of the adjustment seat (3).

4. The passive wave compensation device for sea surface operations according to claim 3, characterized in that: A second screw rod (27) is integrally mounted on the top of the first screw rod (20), and a second sleeve rod (28) is threadedly connected to the outer side of the second screw rod (27). The second sleeve rod (28) is slidably connected to the top of the adjustment seat (3), and a sliding roller (29) is rotatably connected between the tops of adjacent second sleeve rods (28).

5. The passive wave compensation device for sea surface operations according to claim 4, characterized in that: The thread direction of the second screw (27) is the same as that of the first screw (20), the top of the sliding roller (29) contacts the middle of the suspension rope (2), and the position where the sliding roller (29) contacts the suspension rope (2) is lowered, thereby helping to increase the speed of leveling the hanging plate (5).

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