Marine suspension control device and control method for marine suspension control device

Abstract

This application provides a marine levitation control device, including a first oil tank, a second oil tank, a first switching valve, a control chamber, a bidirectional pumping assembly, and an elastic element; the second oil tank is connected to the first oil tank and undergoes a resettable deformation under external force; the first switching valve is located between the first and second oil tanks to allow communication between them; the control chamber is located on the first oil tank; the bidirectional pumping assembly is located on the control chamber; the elastic element is located inside the second oil tank and abuts against the inner wall of the second oil tank; the control method of the marine levitation control device includes the following steps: placing the marine levitation control device on the water surface; when sinking, supplying hydraulic oil from the second oil tank to the first oil tank, causing the second oil tank to deform inward under water pressure; opening the first switching valve, allowing hydraulic oil to be transported to the first oil tank under water pressure; when surfacing, pumping hydraulic oil from the first oil tank to the second oil tank, causing the deformed part to reset, until the buoyancy force on the marine levitation control device is greater than its own weight.

Description

Technical Field

[0001] This application belongs to the technical field of marine operation equipment, and more specifically, it relates to a marine suspension control device and a control method for the marine suspension control device. Background Technology

[0002] Ocean observation is the foundation for studying and developing the ocean. As an important component of marine science and technology, it plays a vital role in safeguarding maritime rights, developing marine resources, providing early warning of marine disasters, and protecting the marine environment.

[0003] Current ocean observation methods mainly include three types: space-based ocean observation, sea surface observation, and seabed observation. Space-based ocean observation requires the use of aerospace and airborne remote sensing technologies, resulting in extremely high observation costs. Sea surface observation is easily affected by sea surface environmental factors, necessitating seabed observation to avoid the influence of the external environment. When conducting seabed observation, it is necessary to first deploy seabed observation devices. The process of installing and retrieving seabed observation devices is very cumbersome, and observation data can only be obtained by retrieving the devices, resulting in poor timeliness. Therefore, autonomous marine buoyancy control devices are needed for seabed observation, but the energy consumption is high during the process of sinking and surfacing the seabed observation devices. Summary of the Invention

[0004] The purpose of this application is to provide a marine suspension control device and a control method for the marine suspension control device, so as to solve the technical problem of high energy consumption of autonomous marine suspension control devices and suspension operation platforms in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is: to provide a marine suspension control device, comprising:

[0006] First oil depot;

[0007] The second oil tank is connected to the first oil tank and is capable of undergoing restorable deformation under external force;

[0008] A first switching valve is located between the first oil tank and the second oil tank, and can be opened under a preset pressure to allow communication between the first oil tank and the second oil tank.

[0009] A control compartment is located on the first oil tank;

[0010] A bidirectional pumping assembly is installed on the control chamber and is used to realize bidirectional pumping of hydraulic oil in the first oil tank and the second oil tank;

[0011] An elastic element is disposed inside the second oil tank and abuts against the inner wall of the second oil tank.

[0012] Optionally, the first switching valve is a pressure valve, and the elastic element abuts between the first switching valve and the deformable position of the second oil tank to open the first switching valve under external force.

[0013] Optionally, a second switching valve is also provided between the first oil tank and the second oil tank. The second switching valve is a solenoid valve, which can be opened under a preset pressure to allow communication between the first oil tank and the second oil tank.

[0014] Optionally, the second oil tank includes a first tank body connected to the first oil tank and a deformable portion disposed in the first tank body. The first switch valve is disposed between the first oil tank and the first tank body. The deformable portion is disposed at one end of the first tank body away from the first oil tank and is capable of deforming toward the interior of the first tank body. The elastic member extends into the first tank body along the distribution direction of the first tank body and the first oil tank and abuts against the deformable portion.

[0015] Optionally, the deformed part is an elastic oil film.

[0016] Optionally, the bidirectional pumping assembly includes a bidirectional hydraulic pump, a first pipe, and a second pipe; the bidirectional hydraulic pump is disposed in the control compartment, one end of the first pipe and one end of the second pipe are both connected to the bidirectional hydraulic pump, and the other end of the first pipe is connected to the first oil tank, and the other end of the second pipe is connected to the second oil tank.

[0017] Optionally, the control compartment includes a second compartment body, a circuit control system, and a power supply. The circuit control system is installed in the second compartment body, and the power supply is electrically connected to the circuit control system. The circuit control system is electrically connected to the second switching valve and the bidirectional pumping assembly, respectively.

[0018] Optionally, the control compartment, the first oil tank, and the second oil tank are distributed sequentially, and the outer contours of the control compartment, the first oil tank, and the second oil tank overlap.

[0019] Optionally, the control chamber, the first oil tank, and the second oil tank are all cylindrical.

[0020] A control method for a marine suspension control device includes at least the following steps:

[0021] Place the marine suspension control device on the water surface;

[0022] When the marine suspension control device is controlled to sink, the hydraulic oil in the second oil tank is transported to the first oil tank, causing the second oil tank to deform inward under water pressure; the first switch valve is opened, so that the hydraulic oil in the second oil tank is transported to the first oil tank under water pressure;

[0023] When the marine levitation control device is controlled to float, the hydraulic oil pump in the first oil tank is sent to the second oil tank to reset the deformed part until the buoyancy force on the marine levitation control device is greater than its own weight.

[0024] The beneficial effects of the marine levitation control device provided in this application are as follows: Compared with the prior art, in the process of the marine levitation control device sinking, since the first switching valve can be opened under a preset pressure, the hydraulic oil in the second oil tank can enter the first oil tank only through the action of water pressure, causing the second oil tank to deform and the drainage volume of the first oil tank to decrease, thus achieving sinking. There is no need to use a drive device to transport the hydraulic oil in the second oil tank to the first oil tank, which helps to reduce the energy consumption of the bidirectional pumping component. Furthermore, in the process of the marine levitation control device rising, the bidirectional pumping component pumps the hydraulic oil in the first oil tank to the second oil tank, and the elastic element can drive the second oil tank to reset, so that the reaction force of the elastic element can reduce the energy consumption of the bidirectional pumping component. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the marine suspension control device provided in the embodiments of this application in its initial state;

[0027] Figure 2 A schematic diagram of the marine suspension control device provided in the embodiments of this application under the following conditions;

[0028] Figure 3 This is a schematic diagram of the marine suspension control device provided in the embodiments of this application in a balanced state;

[0029] Figure 4 This is a schematic diagram of the marine suspension control device provided in the embodiments of this application in its floating state;

[0030] Figure 5 A flowchart of the control method for the marine suspension control device provided in the embodiments of this application.

[0031] The following are the labeling elements in the figure:

[0032] 1-First oil tank;

[0033] 2-Second oil tank; 21-First tank body; 22-Deformation section;

[0034] 3-First switching valve;

[0035] 4-Control compartment; 41-Second compartment; 42-Circuit control system; 43-Power supply;

[0036] 5-Bidirectional pumping assembly; 51-Bidirectional hydraulic pump; 52-First pipeline; 53-Second pipeline;

[0037] 6-Elastic element;

[0038] 7-Second switching valve. Detailed Implementation

[0039] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0040] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0041] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0043] Based on this, embodiments of the present invention provide a marine levitation control device and a control method for the marine levitation control device, wherein a first switching valve is connected between the fixed oil tank and the variable oil tank to reduce the energy consumption of the hydraulic pump during the sinking process, and an elastic structure is added in the variable oil tank to reduce the energy consumption of the hydraulic pump during the buoyancy process.

[0044] Please see Figures 1 to 4 The marine levitation control device provided in the embodiments of this application will now be described. The marine levitation control device includes: a first oil tank 1, a second oil tank 2, a first switching valve 3, a control chamber 4, a bidirectional pumping assembly 5, and an elastic element 6; the second oil tank 2 is connected to the first oil tank 1 and can undergo resettable deformation under external force; the first switching valve 3 is disposed between the first oil tank 1 and the second oil tank 2 and can be opened under a preset pressure to allow communication between the first oil tank 1 and the second oil tank 2; the control chamber 4 is disposed on the first oil tank 1; the bidirectional pumping assembly 5 is disposed on the control chamber 4, and the bidirectional pumping assembly 5 is used to realize bidirectional pumping of hydraulic oil in the first oil tank 1 and the second oil tank 2; the elastic element 6 is disposed in the second oil tank 2 and abuts against the inner wall of the second oil tank 2.

[0045] Specifically, the second oil tank 2 is connected to the first oil tank 1, the control tank 4 is connected to the side of the first oil tank 1 facing away from the second oil tank 2, the bidirectional pumping assembly 5 is located in the control tank 4 and connects the first oil tank 1 and the second oil tank 2, a channel is provided between the first oil tank 1 and the second oil tank 2, and a first switch valve 3 is provided in the channel. The channel is opened or closed by the first switch valve 3, and the preset pressure of the first switch valve 3 is water pressure.

[0046] When the marine suspension control device floats on the sea surface, all the hydraulic oil is stored in the second oil tank 2. The second oil tank 2 is at its largest volume at this time, and the first oil tank 1 also has the largest displacement. At this time, the buoyancy of the marine suspension control device is the largest. The elastic element 6 located in the second oil tank 2 is in its initial state. Through mechanical analysis, the buoyancy of the marine suspension control device is balanced with its own weight.

[0047] When the marine levitation control device sinks, a small amount of hydraulic oil is drawn from the second oil tank 2 to the first oil tank 1 through the bidirectional pumping component 5. The second oil tank 2 deforms under the pressure of seawater, and at the same time, the drainage volume of the first oil tank 1 decreases, and the marine levitation control device begins to sink. As the water pressure on the marine levitation control device increases with depth, the length of the elastic element 6 in the second oil tank 2 shortens with depth, and the elastic element 6 is in a storage state. When the water pressure reaches the preset pressure, the first switch valve 3 opens, and the second oil tank 2 continues to deform under the action of water pressure. The hydraulic oil in the second oil tank 2 enters the first oil tank 1 through the first switch valve 3 by the action of seawater. When the pressure reaches a certain value, the presence of gas in the first oil tank 1 prevents the hydraulic oil in the second oil tank 2 from entering the first oil tank 1. At this time, the drainage volume of the first oil tank 1 is the smallest, the storage volume of hydraulic oil in the second oil tank 2 is the smallest, and the length of the elastic element 6 is the shortest.

[0048] When the marine levitation control device is in an underwater equilibrium state, and when it is required to be in equilibrium at the target underwater depth, hydraulic oil is drawn from the first oil tank 1 and transported to the second oil tank 2 through the bidirectional pumping assembly 5. At this time, the elastic element 6 is in a compressed state, and the hydraulic oil in the first oil tank 1 enters the second oil tank 2. The drainage volume of the first oil tank 1 increases, the volume of hydraulic oil stored in the second oil tank 2 increases, and the length of the elastic element 6 increases, performing elastic reset until the self-weight of the marine levitation control device is equal to the buoyancy it receives, at which point the marine levitation control device is in an equilibrium state.

[0049] When the marine levitation control device rises, the hydraulic oil in the first oil tank 1 continues to be transported to the second oil tank 2 through the bidirectional pumping component 5. At this time, the elastic element 6 is still in a compressed state, and the drainage volume of the first oil tank 1 continues to increase. The elastic element 6 grows as the drainage volume of the first oil tank 1 increases until the buoyancy of the marine levitation control device is greater than its own weight, and the marine levitation control device begins to rise.

[0050] Optionally, the elastic element 6 is configured as a spring, sheet, or other elastic entity.

[0051] Compared with the prior art, the marine levitation control device provided in this application, during the sinking process of the marine levitation control device, since the first switching valve 3 can open under a preset pressure, the hydraulic oil in the second oil tank 2 can enter the first oil tank 1 only through the action of water pressure, causing the second oil tank 2 to deform, reducing the drainage volume of the first oil tank 1, and achieving sinking. There is no need to use a drive device to transport the hydraulic oil in the second oil tank 2 to the first oil tank 1, which helps to reduce the energy consumption of the bidirectional pumping component 5. Furthermore, during the buoyancy process of the marine levitation control device, the bidirectional pumping component 5 pumps the hydraulic oil in the first oil tank 1 to the second oil tank 2, and the elastic element 6 can drive the second oil tank 2 to reset, so that the reaction force of the elastic element 6 can reduce the energy consumption of the bidirectional pumping component 5.

[0052] In another embodiment of this application, please refer to Figure 1 The first switching valve 3 is a pressure valve, and the elastic element 6 abuts between the first switching valve 3 and the deformable position of the second oil tank 2 to open the first switching valve under external force.

[0053] With this configuration, during descent, when the water pressure on the pressure valve reaches the preset pressure, the elastic element 6 is compressed by the water pressure. The end of the elastic element 6 that abuts against the first switch valve 3 applies a force toward the first pressure valve 3, causing the pressure valve to open and opening the passage between the first oil tank 1 and the second oil tank 2. During ascent, when the water pressure on the pressure valve and the force applied to the pressure valve by the elastic element 6 are less than the preset pressure for opening the pressure valve, the pressure valve closes.

[0054] In another embodiment of this application, please refer to Figure 1 A second switching valve 7 is also provided between the first oil tank 1 and the second oil tank 2. The second switching valve 7 can be opened under a preset pressure to allow the first oil tank 1 and the second oil tank 2 to communicate.

[0055] Specifically, hydraulic oil is transported between the first oil tank 1 and the second oil tank 2 through three channels, one of which is equipped with a bidirectional pumping assembly 5, another with a first switching valve 3, and the third with a second switching valve 7.

[0056] With this configuration, the energy consumption of the bidirectional pumping assembly 5 can be further reduced during the sinking process through the combined action of the first switching valve 3.

[0057] In another embodiment of this application, please refer to Figure 1 The second switching valve 7 (not shown in the figure) is a solenoid valve.

[0058] With this configuration, during descent, when the water pressure reaches the preset pressure of the second switching valve 7, the second switching valve 7 opens, allowing hydraulic oil in the second oil tank 2 to be transported to the first oil tank 1, further reducing the energy consumption of the bidirectional pumping assembly 5. During ascent, when the water pressure is less than the preset pressure of the second switching valve 7, the second switching valve 7 closes. In addition, through its cooperation with the first switching valve 3, the second switching valve 7 can supply hydraulic oil when the first switching valve 3 is damaged, and vice versa, ensuring that hydraulic oil is supplied through channels other than the bidirectional pumping assembly 5, thereby achieving energy-saving effects.

[0059] In another embodiment of this application, please refer to Figure 1 The second oil tank 2 includes a first tank body 21 connected to the first oil tank 1 and a deformable part 22 disposed on the first tank body 21. The first switch valve 3 is disposed between the first oil tank 1 and the first tank body 21. The deformable part 22 is disposed at the end of the first tank body 21 away from the first oil tank 1 and can be deformed inward toward the interior of the first tank body 21. The elastic member 6 extends in the first tank body 21 along the distribution direction of the first tank body 21 and the first oil tank 1 and abuts against the deformable part 22.

[0060] Optionally, the deformable part 22 may be configured as a piston capable of moving axially along the first chamber 21, an elastic membrane disposed at the end of the first chamber 21 opposite to the first oil tank 1, or other elastic entities and other physical structures capable of moving axially along the first chamber 21.

[0061] Specifically, the elastic element 6 is disposed inside the first chamber 21. One end of the elastic element 6 abuts against the first oil tank 1, and the other end abuts against the deformation part 22. The deformation part 22 can deform along the axial direction of the first chamber 21 or move in the axial direction.

[0062] With this configuration, the volume of hydraulic oil stored in the first chamber 21 can change through the first chamber 21 and the deformation part 22, thereby adjusting the drainage volume in the first oil tank 1.

[0063] In another embodiment of this application, please refer to Figure 1 The deformable part 22 is an elastic oil film.

[0064] With this configuration, the elastic oil film can undergo elastic deformation, thereby adjusting the drainage volume in the first oil tank 1.

[0065] In another embodiment of this application, please refer to Figure 1 The bidirectional pumping assembly 5 includes a bidirectional hydraulic pump 51, a first pipe 52, and a second pipe 53. The bidirectional hydraulic pump 51 is located in the control compartment 4. One end of the first pipe 52 and one end of the second pipe 53 are both connected to the bidirectional hydraulic pump 51, and the other end of the first pipe 52 is connected to the first oil tank 1, and the other end of the second pipe 53 is connected to the second oil tank 2.

[0066] With this configuration, the bidirectional hydraulic pump 51 is installed in the control compartment 4. The bidirectional hydraulic pump 51 can draw hydraulic oil from the first oil tank 1 and transport it to the second oil tank 2 through the first pipe 52 and the second pipe 53, and at the same time, it can also transport the hydraulic oil drawn from the second oil tank 2 to the first oil tank 1.

[0067] Optionally, the end of the first pipe 52 away from the bidirectional hydraulic pump 51 contacts the side of the first oil tank 1 that is closer to the second oil tank 2.

[0068] This configuration ensures that during the process of drawing hydraulic oil from the first oil tank 1, the bidirectional hydraulic pump 51 can draw the hydraulic oil that has accumulated at the bottom of the first oil tank 1 due to gravity, thus preventing the hydraulic oil from remaining at the bottom of the first oil tank 1.

[0069] In another embodiment of this application, please refer to Figure 1 The control compartment 4 includes a second compartment 41, a circuit control system 42, and a power supply 43. The circuit control system 42 is installed in the second compartment 41, and the power supply 43 is electrically connected to the circuit control system 42. The circuit control system 42 is electrically connected to the second switching valve 7 and the bidirectional pumping assembly 5.

[0070] With this configuration, the circuit control system 42 can be connected to an external controller, which can control the bidirectional hydraulic pump 51 and the second switching valve 7. The external controller can control the opening or closing of the second switching valve 7 and the bidirectional hydraulic pump 51. The power supply 43 can provide electrical energy to the bidirectional hydraulic pump 51, the circuit control system 42, and the second switching valve 7.

[0071] In another embodiment of this application, please refer to Figure 1 The control chamber 4, the first oil tank 1, and the second oil tank 2 are distributed sequentially, and on the cross section perpendicular to the distribution direction of the control chamber 4, the first oil tank 1, and the second oil tank 2, the outer contours of the control chamber 4, the first oil tank 1, and the second oil tank 2 coincide.

[0072] This configuration improves the stability of the marine suspension control device during its buoyancy and sinking process.

[0073] In another embodiment of this application, the control chamber 4, the first oil tank 1, and the second oil tank 2 are all cylindrical.

[0074] With this configuration, the control chamber 4, the first oil tank 1, and the second oil tank 2 have regular shapes. During the sinking and floating process, this prevents the surface of the marine suspension control device from coming into contact with the water and generating other forces, thus facilitating the movement of the marine suspension control device.

[0075] Please see Figure 5 This application also provides a control method for a marine suspension control device, comprising at least the following steps:

[0076] S10: Place the marine suspension control device on the water surface;

[0077] Specifically, before placing the marine suspension control device on the water surface, the first oil tank 1 is filled with air and / or inert gas, and the second oil tank 2 is filled with hydraulic oil, providing the first oil tank 1 filled with gas and the second oil tank 2 filled with hydraulic oil.

[0078] S20: When the marine suspension control device is sinking, the hydraulic oil in the second oil tank 2 is transported to the first oil tank 1, causing the second oil tank 2 to deform inward under water pressure; the first switch valve 3 is opened, so that the hydraulic oil in the second oil tank 2 is transported to the first oil tank 1 under water pressure.

[0079] Specifically, such as Figure 2 As shown, the hydraulic oil in the second oil tank 2 enters the first oil tank 1 under the action of water pressure. The air and / or inert gas in the first oil tank 1 are compressed until the air and / or inert gas in the first oil tank 1 can no longer be compressed. At this time, the drainage volume of the first oil tank 1 is the smallest.

[0080] S30: When the marine suspension control device is controlled to float, the hydraulic oil pump in the first oil tank 1 is sent to the second oil tank 2 to reset the deformable part 22 until the buoyancy force on the marine suspension control device is greater than its own weight.

[0081] Specifically, such as Figure 4 As shown, the hydraulic oil in the first oil tank 1 is pumped to the second oil tank 2 by the bidirectional hydraulic pump 51. At the same time, through the elastic reset action of the elastic element 6, the deformed part 22 begins to reset, the hydraulic oil in the first oil tank 1 decreases, and the drainage volume of the first oil tank 1 increases.

[0082] Compared with the prior art, the control method of the marine suspension control device provided in this application reduces the energy consumption of the bidirectional hydraulic pump 51 by allowing the hydraulic oil in the second oil tank 2 to enter the first oil tank 1 through the first switch valve 3 during sinking; and reduces the energy consumption of the bidirectional hydraulic pump 51 by allowing the reaction force of the elastic element 6 to act on the deformable part 22 during buoyancy.

[0083] Please see Figure 1 This application also provides a suspended operation device, including a marine suspension control device and a detector, wherein the detector is disposed on the marine suspension control device.

[0084] Specifically, the marine suspension control device can carry various marine sensors, including sonar sensors, ocean current sensors, vibration sensors, temperature sensors, salinity sensors, depth sensors, and marine operation equipment.

[0085] This configuration, by incorporating various sensors, broadens the applications of the marine suspension control device. Furthermore, by using the marine suspension control device to carry marine sensors and marine operation equipment to reach target depths for operations or inspections, it is convenient to use and can reduce energy consumption.

[0086] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A marine suspension control device, characterized in that, include: First oil depot; The second oil tank is connected to the first oil tank and is capable of undergoing restorable deformation under external force; A first switching valve is located between the first oil tank and the second oil tank, and can be opened under a preset pressure to allow communication between the first oil tank and the second oil tank. A control compartment is located on the first oil tank; A bidirectional pumping assembly is mounted on the control compartment and is used to realize bidirectional pumping of hydraulic oil in the first oil tank and the second oil tank; An elastic element is disposed within the second oil reservoir and abuts against the inner wall of the second oil reservoir; wherein, the elastic element is a spring; The elastic element is configured to be compressed to store elastic energy when the marine levitation control device sinks, and to release elastic energy to assist in the resetting of the second oil tank when the marine levitation control device rises. A second switching valve is also provided between the first oil tank and the second oil tank; The control chamber includes a second chamber, a circuit control system, and a power supply. The circuit control system is installed in the second chamber. The power supply is electrically connected to the circuit control system. The circuit control system is electrically connected to the second switching valve and the bidirectional pumping assembly, respectively. The control compartment, the first oil tank, and the second oil tank are arranged sequentially, and the outer contours of the control compartment, the first oil tank, and the second oil tank overlap. The control chamber, the first oil tank, and the second oil tank are all cylindrical in shape. The second oil tank includes a first tank body connected to the first oil tank and a deformable part disposed in the first tank body. The first switch valve is disposed between the first oil tank and the first tank body. The deformable part is disposed at one end of the first tank body away from the first oil tank and is capable of deforming toward the interior of the first tank body. The elastic member extends into the first tank body along the distribution direction of the first tank body and the first oil tank and abuts against the deformable part.

2. The marine suspension control device as described in claim 1, characterized in that, The first switching valve is a pressure valve, and the elastic element abuts between the first switching valve and the deformable position of the second oil tank to open the first switching valve under external force.

3. The marine suspension control device as described in claim 1, characterized in that, The second switching valve is a solenoid valve, which can be opened under a preset pressure to allow communication between the first oil tank and the second oil tank.

4. The marine suspension control device as described in claim 1, characterized in that, The deformable part is an elastic oil film.

5. The marine suspension control device as described in claim 1, characterized in that, The bidirectional pumping assembly includes a bidirectional hydraulic pump, a first pipe, and a second pipe. The bidirectional hydraulic pump is located inside the control compartment. One end of the first pipe and one end of the second pipe are both connected to the bidirectional hydraulic pump, and the other end of the first pipe is connected to the first oil tank, while the other end of the second pipe is connected to the second oil tank.

6. A control method for a marine suspension control device as described in any one of claims 1-5, characterized in that, It should include at least the following steps: Place the marine suspension control device on the water surface; When the marine suspension control device is controlled to sink, the hydraulic oil in the second oil tank is transported to the first oil tank, causing the second oil tank to deform inward under water pressure; the first switch valve is opened, so that the hydraulic oil in the second oil tank is transported to the first oil tank under water pressure; When the marine levitation control device is controlled to float, the hydraulic oil pump in the first oil tank is sent to the second oil tank to reset the deformed part until the buoyancy force on the marine levitation control device is greater than its own weight. The elastic element is configured to be compressed to store elastic energy when the marine levitation control device sinks, and to release elastic energy to assist in the reset of the second oil tank when the marine levitation control device rises; the elastic element is a spring.

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