A bottom-mounted submarine observation station for studying marine natural disasters

Abstract

An embodiment of the present invention provides a bottom-seated submarine observation station for marine natural disaster research, which relates to the field of underwater operations. It includes: a protective cabin, a bracket, a mounting frame, a protective tube, a seabed seismic detector, and a bottom-seating mechanism; the bracket is mounted on the lower surface of the protective cabin; the mounting frame is mounted on the inner side of the bracket; the protective tube is mounted at the center of the mounting frame; the outer wall of the protective tube is provided with a plurality of through grooves equidistantly along the circumference; the seabed seismic detector is mounted in the protective tube, and the seabed seismic detector is connected to the lower surface of the protective cabin via a traction rope; two bottom-seating mechanisms are symmetrically mounted on the bracket; the bottom-seating mechanism can automatically unfold when it contacts the seabed, increasing the contact area between the device and the seabed. The device can naturally unfold the landing plate after landing, increasing the contact area with the seabed, and improve the positioning capability of the device by interlocking rivets with the seabed.

Description

Technical Field

[0001] The present invention relates to the field of underwater operations, and in particular to a bottom-mounted seabed observation station for studying marine natural disasters. Background Art

[0002] Marine natural disasters such as tsunamis, storm surges, and submarine earthquakes are characterized by sudden and destructive nature, posing a significant threat to the safety of life, property, and the ecological environment in coastal areas. Accurate monitoring and early warning of marine natural disasters have become a pressing need for marine scientific research and disaster prevention and mitigation efforts. Traditional ocean observations rely primarily on satellite remote sensing, surface buoys, and ship surveys. While satellite remote sensing can observe large areas, its ability to obtain information about the ocean floor is limited and significantly constrained by weather conditions. Surface buoys are susceptible to adverse sea conditions, resulting in insufficient data continuity and stability. Ship surveys are costly, have limited coverage, and are unable to provide real-time, long-term, and continuous observations, making them difficult to meet the high-frequency, high-precision data requirements of marine natural disaster research.

[0003] With the deepening of marine science research and advancements in ocean exploration technology, bottom-mounted submarine observatories have emerged. Deployed directly on the seafloor, these stations overcome many of the drawbacks of traditional observation methods and offer a novel approach to marine natural disaster research. By integrating various high-precision sensors within the observatories, they can provide long-term, stable data on seafloor seismic waves, water pressure fluctuations, water temperature, salinity, current velocity, and other multi-dimensional data. This provides a rich foundation for studying the development, occurrence, and progression of marine natural disasters.

[0004] Publication No. CN114802666B discloses an underwater observation station capable of autonomous submarine movement and ocean exploration. The system includes at least one frame-like lander serving as a submarine base station. The lander is equipped with a salvage handle, buoyancy blocks, and several self-rejection load mechanisms that increase its own weight to sink the lander and automatically jettison loads to float it up. It also includes vertical thrusters and a bracket mechanism. During use, the device naturally shovels into the seabed, with the thrusters used to adjust its position during the process. However, once the device hits the seabed, it lacks the necessary positioning capability and is easily displaced by factors such as ocean currents, which in turn affects the acquisition of ocean data.

[0005] Based on this, the present invention is proposed. Summary of the Invention

[0006] According to an embodiment of the present invention, a bottom-mounted submarine observation station for marine natural disaster research is provided to solve the existing background problems.

[0007] In a first aspect of the present invention, a bottom-mounted seafloor observation station for studying marine natural disasters is provided.

[0008] The bottom-seated submarine observation station for marine natural disaster research includes: a protective cabin, a bracket, a mounting frame, a protective tube, a seabed seismic detector and a bottom-seating mechanism;

[0009] The bracket is mounted on the lower surface of the protective cabin; the mounting frame is mounted on the inner side of the bracket; the protective tube is mounted at the center of the mounting frame; a plurality of through slots are formed on the outer wall of the protective tube at equal intervals along the circumference; the seabed seismic detector is mounted in the protective tube and connected to the lower surface of the protective cabin via a traction cable; two bottom-supporting mechanisms are symmetrically mounted on the bracket;

[0010] The bottom seating mechanism can automatically unfold when contacting the seabed, thereby increasing the contact surface with the seabed.

[0011] Preferably, two sets of limiting mechanisms are symmetrically installed on the bracket, and the limiting mechanisms can automatically release the seabed seismic detector when the device contacts the seabed.

[0012] Preferably, cross bars are respectively installed on the four sides of the bracket.

[0013] Preferably, the bottom seating mechanism comprises: a rotating arm, a bottom plate, a rivet and a round hole;

[0014] There are two rotating arms, which are symmetrically rotated and installed on the bracket; a drop plate is installed between the two rotating arms, and the drop plate is tilted outward from bottom to top; there are several rivets, which are installed in a rectangular array on the side of the drop plate away from the bracket; there are several circular holes, which are opened in a rectangular array on the drop plate.

[0015] Preferably, the bottom seating mechanism further comprises: a moving plate, a spring, a locking track, a rotating rod, a contact plate and a shifting rod;

[0016] The movable plate is slidably mounted on the cross bar; the spring is sleeved on the cross bar, and the spring is installed between the movable plate and the bracket; the locking track is installed on the movable plate; the shift rod is installed on the side of the rotating arm opposite to the locking track, and the shift rod is installed in the locking track; one end of the rotating rod is rotatably mounted on the bottom end of the movable plate, and the rotating rod is inclined from top to bottom toward the center position of the cross bar; the other end of the rotating rod is rotatably connected to the contact plate.

[0017] Preferably, a plurality of pressure relief holes are provided on the contact plate in a rectangular array.

[0018] Preferably, the locking track is provided with a locking groove, a limiting wall and a slide rail;

[0019] The locking groove is arranged horizontally, the upper arm of the inner cavity of the locking groove forms a limiting wall, the sliding rail is arranged in an arc shape, and the sliding rail and the locking groove are communicated with each other.

[0020] Preferably, the limiting mechanism comprises: a linkage seat, a mounting slot, a linkage rod and a limiting rod;

[0021] There are two linkage seats, which are symmetrically slidably installed on the cross bar; the mounting groove is installed on the linkage seat; the two ends of the linkage rod are respectively rotatably connected to the mounting groove and the movable plate; one end of the limit rod is rotatably installed in the mounting groove through a torsion spring, and the other end of the limit rod passes through the through groove.

[0022] Preferably, counterweights are installed at the four corners of the bottom end of the bracket; at least four propellers are installed on the mounting frame, and the four propellers are respectively facing the four sides of the bracket.

[0023] Preferably, a battery and a PLC controller are fixedly installed in the protective cabin; the battery is electrically connected to the thruster and the seabed seismic detector.

[0024] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0025] 1. The present invention provides a bottom-seated submarine observation station for marine natural disaster research. The bottom-seating mechanism can realize that when the equipment contacts the seabed, the contact plate and the rotating rod cooperate to move the movable plate laterally, and then the bottom plate is automatically deployed by the cooperation of the shift rod and the locking track to increase the contact area between the equipment and the seabed. The rivets are used to connect the equipment with the seabed to improve the stability of the equipment on the seabed and enhance the positioning ability of the equipment to avoid displacement due to the influence of ocean currents, thereby ensuring the accurate acquisition of marine information data.

[0026] 2. The limiting mechanism in the present invention can cooperate with the bottom seating mechanism. When the equipment lands on the ground, it can automatically release the seabed seismic detector, thereby ensuring that the seabed seismic detector can land naturally and will not be buried too deeply in the soil due to external forces, so as not to affect normal signal detection.

[0027] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and other features, advantages and aspects of the embodiments of the present invention will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0029] Figure 1 A schematic structural diagram of a bottom-mounted submarine observation station for marine natural disaster research according to an embodiment of the present invention is shown;

[0030] Figure 2 A schematic diagram of the explosion structure of a bottom-mounted submarine observation station for marine natural disaster research according to an embodiment of the present invention is shown;

[0031] Figure 3 A schematic structural diagram of a limit mechanism of a bottom-mounted submarine observation station for marine natural disaster research according to an embodiment of the present invention is shown;

[0032] Figure 4 A left side view of a bottom-seated submarine observation station for marine natural disaster research according to an embodiment of the present invention is shown;

[0033] Figure 5 A front view of a bottom-seated submarine observation station for marine natural disaster research according to an embodiment of the present invention is shown;

[0034] Figure 6 A cross-sectional view of a protective cabin of a bottom-seated submarine observation station for studying marine natural disasters according to an embodiment of the present invention is shown;

[0035] Figure 7 A schematic structural diagram of a locking track of a bottom-mounted submarine observation station for marine natural disaster research according to an embodiment of the present invention is shown;

[0036] Figure 8 A top view of a limiting mechanism of a bottom-mounted seabed observation station for marine natural disaster research according to an embodiment of the present invention is shown.

[0037] Figure 9 A schematic diagram of the unfolded state of the bottom plate of a bottom-seated seabed observation station for marine natural disaster research according to an embodiment of the present invention is shown.

[0038] The reference numerals are as follows:

[0039] 1. Protective cabin; 101. Suspension arm; 2. Bracket; 201. Crossbar; 3. Counterweight; 4. Mounting frame; 5. Protective tube; 501. Through slot; 6. Seabed seismic detector; 601. Towing rope; 7. Thruster; 8. Seat mechanism; 81. Rotating arm; 82. Drop plate; 83. Rivet; 84. Round hole; 85. Moving plate; 86. Spring; 87. Locking track; 8701. Locking slot; 8702. Limiting wall; 8703. Slide rail; 88. Turning rod; 89. Contact plate; 810. Drag rod; 811. Pressure relief hole; 9. Limiting mechanism; 91. Linkage seat; 92. Mounting slot; 93. Linking rod; 94. Limiting rod; 10. Battery; 11. PLC controller. DETAILED DESCRIPTION

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. 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.

[0041] In this document, the term "and / or" simply describes a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0042] like Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, the bottom-seated submarine observation station for marine natural disaster research includes: a protective cabin 1, a bracket 2, a counterweight block 3, a mounting frame 4, a protective tube 5, a seabed seismic detector 6, a thruster 7, a bottom-seating mechanism 8, a limiting mechanism 9, a battery 10 and a PLC controller 11.

[0043] The protective cabin 1 is a hollow, waterproof chamber constructed from titanium alloy with a wall thickness of at least 12 mm. Titanium alloy has low density, high strength, and excellent resistance to seawater corrosion. It can withstand water pressures exceeding 600 meters, meeting the requirements for submarine use. Furthermore, the entire protective cabin 1 is constructed using a one-piece molding process to reduce welds and prevent leaks. A titanium alloy suspension arm 101 is mounted at the top center of the protective cabin 1, connecting to the steel cable of an external traction device. During use, the device is transported to a designated sea area via a transport vessel, and the cable is released to release the device into the sea. Mounted on the bottom surface of the protective cabin 1 is a rectangular frame structure constructed from titanium alloy. Crossbars 201 are mounted on each of the four sides of the bracket 2, and counterweights 3 are mounted at the four corners of the bottom end of the bracket 2 to ensure even distribution of weight relative to the entire device, thereby ensuring a stable vertical descent after entry into the water. The material of the counterweight 3 is tungsten alloy covered with titanium alloy. Tungsten alloy has the properties of ultra-high density and high temperature resistance. The total mass of the counterweight 3 in this embodiment is adapted to the overall mass of the equipment, ensuring that the center of gravity of the equipment is located below the center line of the equipment. The titanium alloy material covered has high resistance, which not only ensures that the entire equipment can descend vertically after entering the water, but also ensures that the service life of the counterweight 3 is long. The mounting frame 4 is installed on the inside of the bracket 2. The protective tube 5 is installed in the center of the mounting frame 4. The protective tube 5 is a cylindrical hollow structural component, and its outer wall is provided with a number of through grooves 501 equidistantly along the circumference. The through grooves 501 can ensure that seawater can smoothly enter and exit the space inside and outside the protective tube 5. The seafloor seismic instrument 6 is mounted within the protective tube 5 and connected to the lower surface of the protective chamber 1 via a traction cable 601. This traction cable 601 is a flexible steel cable, longer than the height of the support 2. It secures the seafloor seismic instrument 6 to the entire system, preventing it from becoming detached. When the seafloor seismic instrument 6 falls to the seafloor, the traction cable 601 remains flexible, generating no additional traction that could affect the instrument's signal reception. Furthermore, there are at least four traction cables 601, equidistantly spaced around the circumference to ensure balanced force distribution. The inner diameter of the protective tube 5 matches the outer diameter of the seafloor seismic instrument 6. When released, the seafloor seismic instrument 6 descends along the inner cavity of the protective tube 5 until it contacts the seafloor. During this process, the through-slot 501 provides connectivity, allowing seawater to flow freely, quickly balancing the internal and external pressures of the protective tube 5 and preventing the instrument from falling normally due to pressure imbalance. The seafloor seismic instrument 6 in this embodiment uses the AQUARIUS acoustic telemetry seafloor seismometer (OBS). There are at least four thrusters 7, mounted on the mounting frame 4 and facing each of the four sides of the bracket 2. In this embodiment, there are six thrusters 7, one mounted on each of the two short sides of the bracket 2 and two symmetrically mounted on each of the two long sides. An underwater thruster converts power into fluid thrust, propelling the underwater equipment forward. The thrusters 7 used in this embodiment are the Whale 715 model.Two bottom-seating mechanisms 8 are symmetrically mounted on the bracket 2. These mechanisms 8 automatically deploy upon contact with the seabed, increasing the contact surface between the device and the seabed and enhancing the device's stability. Two sets of limiting mechanisms 9 are also symmetrically mounted on the bracket 2. These limiting mechanisms 9 automatically release the seabed seismic detector 6 upon contact with the seabed. A battery 10 and a PLC controller 11 are fixedly mounted in the protective cabin 1. The battery 10 is electrically connected to the propeller 7 and the seabed seismic detector 6 and is used to power the propeller 7 and the seabed seismic detector 6. It is understood that the battery 10 is a waterproof battery, model WW-48 / 6500, a lithium iron phosphate battery, which has a high level of protection and meets the requirements of the device. Similarly, in this embodiment, the PLC controller 11 is a waterproof model, specifically a CAN I / O PLC Waterproof model. It can, as required, selectively activate any propeller 7 to adjust the device's overall position in the sea before it reaches the bottom, as well as control the seabed seismic detector 6.

[0044] refer to Figure 2 、 Figure 3 and Figure 4The bottoming mechanism 8 includes: a rotating arm 81, a bottom plate 82, a rivet 83, a circular hole 84, a movable plate 85, a spring 86, a locking track 87, a rotating rod 88, a contact plate 89, a lever 810 and a pressure relief hole 811. There are two rotating arms 81, which are symmetrically mounted on the bracket 2. The rotating arm 81 consists of two connecting arms with obtuse angles to each other. A bottom plate 82 is installed between the two rotating arms 81. The bottom plate 82 is tilted outward from bottom to top. When it is out of the restricted state, it can expand outward by its own weight. There are several rivets 83, which are mounted in a rectangular array on the side of the bottom plate 82 away from the bracket 2. There are several circular holes 84, which are opened in a rectangular array on the bottom plate 82 and are staggered with the rivets 83. The circular holes 84 are used to allow seawater to pass through. When the bottom plate 82 rotates, the contact area with seawater is avoided to be too large to prevent affecting the rotation. The movable plate 85 is slidably mounted on the cross bar 201. In this embodiment, there are at least two cross bars 201 located on the same side. The common limit of the two cross bars 201 can ensure that the movable plate 85 slides stably and avoids shaking or deflection. There are two springs 86, which are respectively sleeved on the cross bar 201, and the springs 86 are installed between the movable plate 85 and the bracket 2. The locking track 87 is installed on the movable plate 85. The locking track 87 is provided with a locking groove 8701, a limiting wall 8702 and a slide rail 8703. The locking groove 8701 is horizontally arranged, and the upper arm of the inner cavity of the locking groove 8701 forms a limiting wall 8702. The slide rail 8703 is arranged in an arc shape, and the slide rail 8703 is connected to the locking groove 8701. The lever 810 is installed on the side of the rotating arm 81 opposite to the locking track 87, and the lever 810 is installed in the locking groove 8701, and the lever 810 is in contact with the limiting wall 8702, and the limiting wall 8702 is used to prevent the rotating arm 81 from rotating. The corner between the slide rail 8703 and the locking groove 8701 is processed into a rounded corner to facilitate the movement of the lever 810 between the slide rail 8703 and the locking groove 8701. One end of the rotating rod 88 is rotatably installed at the bottom end of the movable plate 85, and the rotating rod 88 is inclined from top to bottom toward the center position of the cross bar 201. The other end of the rotating rod 88 is rotatably connected to the contact plate 89. There are a number of pressure relief holes 811, which are opened in a rectangular array on the contact plate 89.

[0045] It is worth noting that, in this embodiment, the corresponding contact plates 89 in the two seating mechanisms 8 are fixedly connected to form an integral component, ensuring that the two seating mechanisms 8 can operate synchronously when in contact with the ground.

[0046] refer to Figure 2 、 Figure 3 and Figure 8. The limiting mechanism 9 includes: a linkage seat 91, a mounting groove 92, a linkage rod 93 and a limiting rod 94. There are two linkage seats 91, which are symmetrically slidably installed on the cross bar 201 and are located on the cross bar 201 on the long side of the bracket 2. The linkage seat 91 can slide along the axial direction of the cross bar 201. The mounting groove 92 is installed on the linkage seat 91. The two ends of the linkage rod 93 are rotatably connected to the mounting groove 92 and the movable plate 85, and the linkage rod 93 is tilted. One end of the limiting rod 94 is rotatably installed in the mounting groove 92 by a torsion spring, and the other end of the limiting rod 94 passes through the through groove 501. The upper surface of the limiting rod 94 contacts the bottom end of the seabed seismic detector 6, and the end of the limiting rod 94 passing through the through groove 501 is arc-shaped.

[0047] The specific working principle of the above structure is as follows: the device is connected to the suspension arm 101 by a steel cable, and then the entire device is placed in the sea. By utilizing the action of the counterweight block 3, after the device enters the sea, it can sink vertically to the seabed. During this process, the propeller 7 is activated to adjust the lateral position of the device in the sea. When the contact plate 89 of the device contacts the seabed, the bracket 2 continues to sink under the action of the counterweight block 3, and will move upward relative to the bracket 2, thereby utilizing the rotation of the rotating rod 88 to move the movable plates 85 in the two bottom-supporting mechanisms 8 to the left and right sides, while driving the locking track 87 to move synchronously. When the counterweight block 3 contacts the seabed, the device falls to the ground, and at this time the relative position of the contact plate 89 and the bracket 2 no longer changes. At the same time, due to the movement of the locking track 87, the lever 810 slides from the locking groove 8701 into the slide rail 8703, thereby causing the lever 810 to be released from the limited state. By utilizing the deadweight of the bottom plate 82, since the lever 810 is out of the limit state, the rotating arm 81 will rotate together with the bottom plate 82, and the lever 810 will slide in the slide rail 8703 until the bottom plate 82 rotates to the horizontal state, and the rivet 83 is inserted into the soil, completing the bottoming of the equipment (such as Figure 9 During this process, due to the movement of the movable plate 85, the linkage rod 93 begins to rotate, thereby driving the two linkage seats 91 located on the same crossbar 201 to approach each other. At the same time, the limiting rod 94 rotates and deforms the torsion spring until the limiting rod 94 slides out of the through slot 501, removing the limit on the seabed seismic detector 6. Under the action of gravity, the seabed seismic detector 6 moves downward along the protective tube 5 until it falls to the seabed.

[0048] Before landing, the device can limit the position of the seabed seismic detector 6, ensuring that it is stably located within the protective tube 5, preventing any impact on the device's landing. The device's position can also be adjusted using a thruster 7. Furthermore, upon landing, the device automatically deploys a landing plate 82 and inserts rivets 83 into the soil. This positioning of rivets 83 enhances the stability of the device on the seabed and prevents displacement. Furthermore, once the device has landed stably, the device automatically releases the seabed seismic detector 6, allowing it to naturally settle and maintain stable contact with the seabed.

[0049] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A bottom-mounted submarine observation station for marine natural disaster research, characterized in that: include: A protective cabin (1), a bracket (2), a mounting frame (4), a protective tube (5), a seafloor seismic detector (6) and a bottom seating mechanism (8); The bracket (2) is mounted on the lower surface of the protective cabin (1); the mounting frame (4) is mounted on the inner side of the bracket (2); the protective tube (5) is mounted at the center of the mounting frame (4); a plurality of through slots (501) are formed on the outer wall of the protective tube (5) at equal intervals along the circumference; the seabed seismic detector (6) is mounted in the protective tube (5), and the seabed seismic detector (6) is connected to the lower surface of the protective cabin (1) via a traction rope (601); two bottom seating mechanisms (8) are symmetrically mounted on the bracket (2); The bottom seating mechanism (8) can automatically unfold when contacting the seabed, thereby increasing the contact surface with the seabed; Two sets of limiting mechanisms (9) are also symmetrically mounted on the bracket (2), and the limiting mechanisms (9) are capable of automatically releasing the seabed seismic detector (6) when the device contacts the seabed; Crossbars (201) are respectively installed on the four sides of the bracket (2); The bottom seating mechanism (8) comprises a rotating arm (81), a bottom plate (82), a rivet (83) and a circular hole (84); There are two rotating arms (81), which are respectively symmetrically mounted on the bracket (2); a drop plate (82) is mounted between the two rotating arms (81), and the drop plate (82) is tilted outward from bottom to top; there are a plurality of rivets (83), which are mounted in a rectangular array on a side of the drop plate (82) away from the bracket (2); there are a plurality of circular holes (84), which are opened in a rectangular array on the drop plate (82); The bottom seating mechanism (8) further comprises: a moving plate (85), a spring (86), a locking track (87), a rotating rod (88), a contact plate (89) and a shifting rod (810); The movable plate (85) is slidably mounted on the cross bar (201); the spring (86) is sleeved on the cross bar (201), and the spring (86) is mounted between the movable plate (85) and the bracket (2); the locking track (87) is mounted on the movable plate (85); the shifting rod (810) is mounted on the side of the rotating arm (81) opposite to the locking track (87), and the shifting rod (810) is mounted in the locking track (87); one end of the rotating rod (88) is rotatably mounted on the bottom end of the movable plate (85), and the rotating rod (88) is inclined from top to bottom toward the center position of the cross bar (201); the other end of the rotating rod (88) is rotatably connected to the contact plate (89).

2. The bottom-seated submarine observation station for marine natural disaster research according to claim 1 is characterized in that: A plurality of pressure relief holes (811) are provided on the contact plate (89) in a rectangular array.

3. The bottom-seated submarine observation station for marine natural disaster research according to claim 2 is characterized in that: The locking track (87) is provided with a locking groove (8701), a limiting wall (8702) and a slide rail (8703); The locking groove (8701) is arranged horizontally, and the upper arm of the inner cavity of the locking groove (8701) forms a limiting wall (8702). The sliding rail (8703) is arranged in an arc shape, and the sliding rail (8703) and the locking groove (8701) are connected to each other.

4. The bottom-mounted submarine observation station for marine natural disaster research according to claim 3 is characterized in that: The limiting mechanism (9) comprises: a linkage seat (91), a mounting groove (92), a linkage rod (93) and a limiting rod (94); There are two linkage seats (91), which are symmetrically slidably mounted on the cross bar (201); the mounting groove (92) is mounted on the linkage seat (91); the two ends of the linkage rod (93) are respectively rotatably connected to the mounting groove (92) and the movable plate (85); one end of the limiting rod (94) is rotatably mounted in the mounting groove (92) through a torsion spring, and the other end of the limiting rod (94) passes through the through groove (501).

5. The bottom-seated submarine observation station for marine natural disaster research according to claim 4 is characterized in that: Counterweights (3) are installed at the four corners of the bottom end of the bracket (2); at least four propellers (7) are installed on the mounting frame (4), and the four propellers (7) are respectively directed towards the four sides of the bracket (2).

6. The bottom-mounted submarine observation station for marine natural disaster research according to claim 5 is characterized in that: A battery (10) and a PLC controller (11) are fixedly installed in the protective cabin (1); the battery (10) is electrically connected to the propeller (7) and the seabed seismic detector (6).

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