A small ocean automatic profile buoy airdrop structure

Abstract

The present invention discloses a small-scale marine automatic profile buoy airdrop structure, comprising a pressure cabin, an antenna, an observation module, a control module, a communication module, a battery module and a buoyancy adjustment system, and also comprising a stabilizing disk. The pressure cabin is a one-stage cylindrical structure, comprising a pressure shell and a top cover and a bottom cover respectively installed at the top and bottom ends of the pressure shell; the antenna and the observation module are respectively installed on the top cover, and the communication module, the control module, the battery module and the buoyancy adjustment system are all installed in the pressure cabin; the stabilizing disk comprises a plurality of blades, the plurality of blades are arranged at intervals along the circumference of the pressure shell, and one end of each blade is hinged to the pressure shell, and can be rotated to a folded state under the action of an external force or rotated to an unfolded state after the external force is removed; the profile buoy of the present application is convenient for selecting a more flexible deployment method such as airdrop, saving manpower and material resources, and can be quickly deployed under some special sea conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater observation and detection equipment, and in particular to an airdroppable small-sized ocean automatic profiling buoy and an airdrop structure thereof. Background Art

[0002] A buoy is an underwater robot that uses its own gravity and buoyancy to achieve periodic ups and downs. It has attracted widespread attention due to its low cost and ability to observe the ocean for a long time.

[0003] The existing buoys are large in size and heavy in weight, so they can only be deployed from ships. Therefore, deployment and recovery are difficult, and therefore rapid deployment and observation cannot be achieved under special sea conditions. At the same time, the size and weight also limit the deployment methods such as rapid airborne deployment. Summary of the invention

[0004] In view of the defects in the prior art, the purpose of the present invention is to provide a small-scale air-droppable ocean automatic profiling buoy.

[0005] Furthermore, the present application also provides a small ocean automatic profiling buoy airdrop structure.

[0006] The technical solution adopted by the present invention is:

[0007] A small air-droppable ocean automatic profiling buoy comprises a pressure cabin, an antenna, an observation module, a control module, a communication module, a battery module and a buoyancy adjustment system, and also comprises a stabilizing disk. The pressure cabin is a one-stage cylindrical structure, comprising a pressure shell and a top cover and a bottom cover respectively mounted on the top and bottom ends of the pressure shell; the antenna and the observation module are respectively mounted on the top cover, and the communication module, the control module, the battery module and the buoyancy adjustment system are all mounted in the pressure cabin; the stabilizing disk comprises a plurality of blades, the plurality of blades are arranged at intervals along the circumference of the pressure shell, and one end of each blade is hinged to the pressure shell, and can be rotated to a folded state under the action of an external force or rotated to an unfolded state after the external force is removed.

[0008] Furthermore, the buoyancy adjustment system includes a motor and a buoyancy adjustment module, the buoyancy adjustment module includes a lead screw, a lead screw nut, a lead screw protective cover and a piston push rod, the bottom end cover is provided with a water inlet chamber, the piston push rod is placed in the water inlet chamber, the lead screw nut is non-rotatably installed in the lead screw protective cover and is fixedly connected to the piston push rod, one end of the lead screw is connected to the output shaft of the motor, and the other end is inserted into the piston push rod and cooperates with the lead screw nut thread to drive the piston push rod to reciprocate in the water inlet chamber.

[0009] Furthermore, it also includes a plug, which is fixed on the bottom end cover, and the plug is provided with a water inlet connected to the water inlet cavity, and a filter is provided in the water inlet.

[0010] Furthermore, the buoyancy adjustment module also includes a rotation-stopping member, which is provided with an opening along the length direction of the lead screw protective cover, one end of the rotation-stopping member is fixed to the lead screw nut, and the other end is limited in the opening.

[0011] Furthermore, the stabilizing disk includes a locking mechanism, which is mounted on the outer wall of the pressure cabin and is connected to the blade to limit the rotation of the blade when the blade rotates to the deployed state.

[0012] Furthermore, the stabilizing disk includes an intermediate shaft and a first torsion spring, the blade is hinged to the outer wall of the pressure cabin via the intermediate shaft, the first torsion spring is mounted on the intermediate shaft, one end of the first torsion spring abuts against the outer wall of the pressure cabin, and the other end abuts against the blade.

[0013] Furthermore, a small-scale marine automatic profile buoy airdrop structure includes a profile buoy and an airdrop device, wherein the profile buoy is the above-mentioned automatic profile buoy, and the airdrop device includes a parachute, a loading bucket, a release cover and a binding belt, wherein the loading bucket is provided with an air inlet, and a protection cabin and a parachute cabin are provided in the loading bucket, the parachute is loaded in the parachute cabin, the top end of the profile buoy is loaded in the protection cabin, and the bottom end of the profile buoy is loaded in the release cover, and the binding belt connects the loading bucket and the release cover to fix the profile buoy between the loading bucket and the release cover, and releases the profile buoy after entering the water.

[0014] Furthermore, the airdrop device also includes a strap, the release cover includes a cup cover and a plunger installed on the cup cover, the strap is circumferentially arranged around the cup cover and is connected to the plunger to press one end of the strap against the cup cover, and the plunger can be detached from the strap under the action of external force to allow the strap to release the strap.

[0015] Furthermore, the release cover also includes a second torsion spring, which is rotatably installed in the cup cover, with one end of the second torsion spring resting against the inner side of the cup cover and the other end resting against the bottom end of the profile buoy.

[0016] Furthermore, it also includes a gravity tube, the inner wall of which is smooth, the diameter of which is larger than the outer diameter of the profile buoy, and the profile buoy is loaded between the loading bucket and the release cover and then placed in the gravity tube, and can slide out along the gravity tube.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0019] Figure 1 A schematic diagram of the structure of an air-droppable small-sized ocean automatic profiling buoy with a stabilizing disk in a folded state provided in Example 1 of the present application;

[0020] Figure 2 A schematic diagram of the structure of an air-droppable small-sized ocean automatic profiling buoy with a stabilizing disk in an unfolded state provided in Example 1 of the present application;

[0021] Figure 3 An exploded view of the stabilizing disk provided in Example 1 of the present application;

[0022] Figure 4 A schematic diagram of the structure of the stabilizing disk provided in Example 1 of the present application;

[0023] Figure 5 for Figure 4 A magnified view of part A;

[0024] Figure 6 A schematic diagram of the internal structure of an air-droppable small-sized ocean automatic profiling buoy with a battery pack provided in Example 1 of the present application;

[0025] Figure 7 A schematic diagram of the internal structure of an air-droppable small-sized ocean automatic profiling buoy without a battery pack provided in Example 1 of the present application;

[0026] Figure 8 This is a schematic diagram of the structure of the buoyancy adjustment module provided in Example 1 of the present application;

[0027] Fig. 9 An exploded view of the buoyancy adjustment module provided in Example 1 of the present application;

[0028] Fig.10 A schematic diagram of the airdrop structure of a small-scale ocean automatic profile buoy provided in Example 2 of the present application;

[0029] Fig.11 A schematic diagram of the loading bucket structure provided in Example 2 of the present application;

[0030] Fig.12 A cross-sectional view of a loading bucket provided in Example 2 of the present application;

[0031] Fig.13A schematic diagram of the release cover structure provided in Example 2 of the present application;

[0032] Fig.14 A schematic diagram of the bottom outer structure of the release cover provided in Example 2 of the present application;

[0033] Fig.15 A schematic diagram of the bottom inner structure of the release cover provided in Example 2 of the present application;

[0034] Fig.16 A schematic diagram of the installation structure of the binding belt provided in Example 2 of the present application;

[0035] Fig.17 A schematic diagram of the strap structure provided in Example 2 of the present application;

[0036] Fig.18 This is a schematic diagram of the cross-sectional structure of the release cover provided in Example 2 of the present application.

[0037] Among them, antenna 1, observation module 2, top cover 3, stabilizing disk 4, flange 401, intermediate shaft 402, first torsion spring 403, spring plunger 404, blade 405, pressure-resistant shell 5, bottom cover 6, plug 7, control module 8, communication module 9, motor 10, motor seat 11, wedge-shaped support block 12, battery module 13, buoyancy adjustment module 14, screw 1401, screw protection cover 1402, limit switch PCB board 1403, bearing gasket 1404, locking nut 1405, angular contact ball bearing 1406, thrust ball bearing 1407, quick-tightening screw 1408, screw Nut 1409, limit switch 1410, piston push rod 1411, gravity tube 15, parachute 16, parachute rope 17, loading bucket 18, bucket cover 1801, parachute cabin 1802, protection cabin 1803, binding belt 19, release cover 20, cup cover 2001, plunger 2002, pin 2003, second torsion spring 2004, strap 2005, ball part 2006, spring 2007, hook 2008, plunger hole 2009, leaking hole 2010, second groove 2011, third groove 2012, fifth groove 2013, first groove 2014, groove 2015. DETAILED DESCRIPTION

[0038] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0039] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs. Example

[0040] See also Figure 1~Figure 2 The present embodiment provides an air-droppable small-sized ocean automatic profiling buoy, comprising a pressure cabin, an antenna 1, an observation module 2, a control module 8, a communication module 9, a battery module 13 and a buoyancy adjustment system, and also comprising a stabilizing disk 4. The pressure cabin is a one-stage cylindrical structure, comprising a pressure shell 5 and a top cover 3 and a bottom cover 6 respectively mounted at the top and bottom ends of the pressure shell 5; the antenna 1 and the observation module 2 are respectively mounted on the top cover 3, and the communication module 9, the control module 8, the battery module 13 and the buoyancy adjustment system are all mounted in the pressure cabin; the stabilizing disk 4 comprises a plurality of blades 405, the plurality of blades 405 are arranged at intervals along the circumference of the pressure shell 5, and one end of each blade 405 is hinged to the pressure shell 5, and can be rotated to a folded state under the action of an external force or rotated to an unfolded state after the external force is removed.

[0041] The present application sets the pressure cabin as a one-stage cylindrical structure, the antenna 1 and the observation module 2 are installed on the pressure cabin, the control module 8, the communication module 9, the battery module 13 and the buoyancy adjustment system are all installed in the pressure cabin, and the blades 405 of the stabilizing disk 4 are hinged to the outer periphery of the pressure shell 5 of the pressure cabin, which can be rotated to a folded state under the action of external force or to an unfolded state after the external force is removed; the above structure reduces the overall size of the profile buoy of the present application, reduces its own weight, and facilitates the selection of more flexible deployment methods such as airdrop, which saves manpower and material resources, and can achieve rapid deployment under some special sea conditions. After deployment, the blades 405 of the stabilizing disk 4 automatically unfold to realize the function of the stabilizing disk 4.

[0042] The pressure cabin adopts a one-stage design and is an inner hollow cylinder structure, which includes a pressure shell 5, a top cover 3 and a bottom cover 6. The pressure shell 5 is made of carbon fiber composite material, and a polyurethane coating is coated on the outside of the pressure shell 5. The top cover 3 is installed at the top of the pressure shell 5, and the bottom cover 6 is installed at the bottom of the pressure shell 5. The top cover 3 and the bottom cover 6 are tightened internally. Sealing rings are provided between the top cover 3 and the pressure shell 5, and between the bottom cover 6 and the pressure shell 5 to ensure a dry environment in the pressure cabin.

[0043] Antenna 1 is used to transmit and receive signals, and is fixed on the outside of the top cover 3 of the pressure cabin. Observation module 2 is used to observe the ocean conditions, and is fixed on the outside of the top cover 3 of the pressure cabin; a pressure sensor is integrated in the observation module, and the pressure sensor is used to determine whether the profile buoy is on the water surface. If so, the communication module 9 starts to locate and send and receive information, and the profile buoy enters the working state. Control module 8, communication module 9, battery module 13 and buoyancy adjustment system are all arranged in the pressure cabin. Control module 8 and communication module 9 are both located at the top of the pressure cabin, and both are installed on the inside of the top cover 3 of the pressure cabin. The buoyancy adjustment system is arranged along the length direction of the pressure cabin and is installed on the bottom cover 6 at the bottom of the pressure cabin. Battery module 13 is arranged on the periphery of the buoyancy adjustment system. Control module 8 is electrically connected to communication module 9, observation module 2, buoyancy adjustment system and battery module 13 respectively to control the operation of the entire profile buoy. Communication module 9 is connected to antenna 1 and communicates with the remote control center through antenna 1. Battery module 13 supplies power to the entire profile buoy.

[0044] See also Figure 1~Figure 5 The blades 405 of the stabilizing disk 4 can be designed with suitable size and shape according to actual use conditions, and the number of blades 405 can be set to a suitable number according to the use conditions and costs. In this embodiment, there are four blades 405, and the four blades 405 are evenly spaced and arranged at the periphery of the pressure cabin in a disc shape. Each blade 405 is an arc-shaped structure that matches the outer wall of the pressure cabin. When the four blades 405 are in a folded state, the four blades 405 are attached to the outer wall of the pressure cabin and match the pressure cabin, which minimizes the size, facilitates full use of space in non-working states such as transportation and storage, and is also convenient for cooperating with the gravity tube 15 to achieve airdrop deployment. When the installation direction of the blade 405 is selected to be the convex surface facing upward after unfolding, the blade 405 can not only play a role in stabilizing the posture, but also can achieve rapid buoyancy when starting the climbing protection, and when communicating on the water surface, the body is exposed to the water surface as much as possible to improve the communication quality.

[0045] In order to hinge the blade 405 on the pressure cabin, the stabilizing disk 4 includes an intermediate shaft 402 and a first torsion spring 403. The blade 405 is hinged to the outer wall of the pressure cabin through the intermediate shaft 402. The first torsion spring 403 is installed on the intermediate shaft 402, and one end thereof is against the outer wall of the pressure cabin, and the other end is against the blade 405.

[0046] Specifically, the stabilizing disk 4 also includes a flange 401, which is fixed to the outer periphery of the top cover 3 of the pressure cabin by screws. A plurality of first mounting seats are arranged at intervals along the circumference of the flange 401, and a second mounting seat is arranged on each blade 405, and both the first mounting seat and the second mounting seat are U-shaped structures. The intermediate shaft 402 is mounted on the first mounting seat, and a mounting hole is opened on the second mounting seat. The second mounting seat is rotatably mounted on the intermediate shaft 402 through the mounting hole and is located on the outside of the first mounting seat, that is, the first mounting seat is located in the U-shaped opening of the second mounting seat. The first torsion spring 403 is mounted on the intermediate shaft 402 and is located in the first mounting seat, one end of which is against the first mounting seat or the flange 401, and the other end is against the second mounting seat. That is, the first torsion spring 403 is located in the U-shaped opening of the first mounting seat.

[0047] The intermediate shaft 402 may be a threaded shaft or an optical shaft, and serves to connect the blade 405 and the flange 401 .

[0048] In order to lock the blade 405 when it rotates to the deployed state, the stabilizing disk 4 includes a locking mechanism, which is installed on the outer wall of the pressure cabin and is connected to the blade 405 to limit the rotation of the blade 405 when the blade 405 rotates to the deployed state.

[0049] Specifically, the locking mechanism is a spring plunger 404, and the plunger body of the spring plunger 404 is installed on the fuselage shell; a limiting hole is opened on the blade 405, when the blade 405 is in a folded state, the plunger head of the spring plunger 404 is against the blade 405, and when the blade 405 is rotated to the unfolded state, it is stuck in the limiting hole.

[0050] More specifically, a through hole is provided on the first mounting seat, the plunger body is installed on the through hole, and the limiting hole is provided on the second mounting seat. There are two spring plungers 404, and the plunger bodies of the two spring plungers 404 are respectively installed in the corresponding through holes at both ends of the first mounting seat. When the blade 405 is in a folded state, the plunger heads of the two spring plungers 404 are respectively against the inner side of the second mounting seat at the corresponding end, and when the blade 405 rotates to an unfolded state, the plunger heads are inserted into the corresponding limiting holes.

[0051] The spring plunger 404 is a commercially available product, which includes a plunger body and a plunger head installed in the plunger body. The plunger head extends from one end of the plunger body. A spring 2007 is provided in the plunger body, and one end of the spring 2007 abuts against the other end of the plunger head.

[0052] When the blade 405 is in a folded state, the limiting hole and the through hole do not correspond, the plunger head of the spring plunger 404 rests against the inner side of the second mounting seat of the blade 405, and the spring 2007 in the spring plunger 404 is compressed; when the blade 405 rotates to an unfolded state, the plunger head pops out and is stuck in the limiting hole under the action of the spring 2007, after which the blade 405 no longer rotates around the central axis and becomes a buoy stabilizing disk 4.

[0053] Before deployment, the blade 405 can be in a folded state under the action of the airdrop device or other restraining devices, such as using a water-soluble tape to wrap around the outer periphery of the blade 405 to make the blade 405 in a folded state. When the blade 405 enters the water, the water-soluble tape dissolves in water and becomes ineffective, and the blade 405 can be released. The blade 405 is attached to the outer wall of the pressure cabin. At this time, the spring plunger 404 and the torsion spring are both in a compressed state. The overall size of the profile buoy is almost equal to the outer diameter of the pressure cabin. The profile buoy can be loaded in the gravity tube 15 to achieve a more convenient deployment form such as airdrop.

[0054] After deployment, when the profile buoy contacts the sea surface, the device restraining the blade 405 fails, and under the action of the torsion spring that was originally in a compressed state, the blade 405 rotates around the intermediate shaft 402. When the blade 405 rotates to the specified position (in an unfolded state), that is, when the limiting hole on the second mounting seat corresponds to the spring plunger 404, the plunger head of the spring plunger 404 pops out and snaps into the limiting hole to limit the blade 405 from continuing to rotate. Thereafter, the blade 405 and the pressure-resistant cabin basically remain stationary, and the unfolded blade 405 acts as a stabilizing disk 4.

[0055] See also Figure 6~Figure 9 The buoyancy adjustment system includes a motor 10 and a buoyancy adjustment module 14. The buoyancy adjustment module 14 includes a screw 1401, a screw nut 1405, a screw protection cover 1402 and a piston push rod 1411. A water inlet chamber is provided on the bottom end cover 6. The piston push rod 1411 is placed in the water inlet chamber. The screw nut 1405 is anti-rotationally installed in the screw protection cover 1402 and is fixedly connected to the piston push rod 1411. One end of the screw 1401 is connected to the output shaft of the motor 10, and the other end is inserted into the piston push rod 1411 and threadedly cooperates with the screw nut 1405 to drive the piston push rod 1411 to move back and forth in the water inlet chamber.

[0056] During adjustment, the motor 10 rotates forward or reverse according to the control instruction, driving the lead screw 1401 to rotate forward or reverse. The lead screw nut 1405 is threadedly fitted on the lead screw 1401 to prevent rotation and is fixedly connected to the piston push rod 1411. When the lead screw 1401 rotates forward or reverse, the lead screw nut 1405 is driven to move forward or backward along the axis of the lead screw 1401, thereby driving the piston push rod 1411 to reciprocate in the water inlet chamber, changing the volume of water in the water inlet chamber, and then changing the buoyancy of the profile buoy, thereby realizing the buoyancy adjustment of the profile buoy.

[0057] By adopting a simpler mechanical structure dynamic seal to replace the original oil circuit static seal, the structure is simpler, easier to assemble, and the cost is lower.

[0058] The buoyancy regulating system further includes a motor seat 11 and a wedge-shaped support block 12. The motor seat 11 is a disc-shaped structure, which is placed in the pressure-resistant shell 5 and is used to install the motor 10 and the screw protection cover 1402. The wedge-shaped support block 12 is composed of two pieces, which are arc-shaped structures that match the motor seat 11. An elliptical hole is provided on the wedge-shaped support block 12. The two wedge-shaped support blocks 12 are symmetrically installed on the motor seat 11 by screws or bolts passing through the elliptical hole, and are connected to the motor seat 11 as a whole, leaning against the inner wall of the pressure-resistant shell 5 to support the pressure-resistant shell 5.

[0059] The motor 10 is fixed to one side of the motor base 11 by screws, the buoyancy regulating module 14 is integrated on the bottom end cover 6 of the pressure cabin and is located on the other side of the motor base 11 , and the battery module 13 is installed on the periphery of the buoyancy regulating module 14 .

[0060] Specifically, one end of the lead screw protective cover 1402 is fixed to the other side of the motor seat 11 by screws, and the other end is fixedly mounted on the bottom end cover 6 of the pressure cabin by threads. The water inlet chamber is integrated in the bottom end cover 6 of the pressure cabin, and is arranged along the axial direction of the pressure cabin. The piston push rod 1411 is placed in the water inlet chamber, and the piston head of the piston push rod 1411 is dynamically sealed with the water inlet chamber to prevent water from entering the pressure cabin. The lead screw 1401 is arranged axially along the lead screw protective cover 1402, and one end of the lead screw 1401 is provided with an assembly hole, and the output shaft of the motor 10 is inserted into the assembly hole and fixedly connected to one end of the lead screw 1401. The lead screw 1401 is installed in the lead screw protective cover 1402 by angular contact ball bearings 1406, thrust ball bearings 1407, bearing washers 1404 and locking nuts. The lead screw nut 1405 is fixedly connected to the piston push rod 1411 by threads, and is threadedly fitted on the lead screw 1401.

[0061] The buoyancy adjustment module 14 also includes a stopper, which can be a quick-tightening screw 1408. An opening is provided along the length direction of the lead screw protection cover 1402, one end of the stopper is fixed on the lead screw nut 1405, and the other end is limited in the opening.

[0062] In order to filter impurities in the water, the buoyancy regulating system further includes a plug 7, which is fixed on the bottom end cover 6. The plug 7 is provided with a water inlet connected to the water inlet cavity, and a filter is provided in the water inlet. The filter is used to filter large particles of impurities in the water entering the water inlet cavity to prevent the dynamic seal of the piston push rod 1411 from failing.

[0063] In order to limit the upper and lower limit travel of the piston push rod 1411, the buoyancy adjustment module 14 also includes a limit switch PCB board 1403, which is installed on the outer side of the screw protection cover 1402 along the axial direction of the screw protection cover 1402 and corresponds to the opening position, and a limit switch 1410 is installed at both ends of the limit switch PCB board 1403. When the screw nut 1405 drives the piston push rod 1411 to move in two directions, the head of the quick-tightening screw 1408 on the screw nut 1405 will trigger the limit switch 1410 on the limit switch PCB board 1403 when the piston push rod 1411 reaches the upper and lower limits, the motor 10 is powered off, and the piston push rod 1411 stops moving.

[0064] The limit switch PCB board 1403 is connected to the control module 8, and the control module 8 is connected to the encoder of the motor 10. When the head of the quick-tightening screw 1408 reaches the upper and lower limits of the piston push rod 1411, the limit switch on the limit switch PCB board 1403 is triggered, and the limit switch PCB board 1403 feeds back the trigger signal to the control module 8, and the control module 8 controls the encoder of the motor 10 to return to zero; when it is necessary to float or dive, the control module 8 drives the motor 10 to rotate forward or reverse, and the encoder of the motor 10 records the number of revolutions of the motor 10 in real time, and sends the number of revolutions to the control module 8. The control module 8 can calculate the specific position of the piston push rod 1411 in the water inlet chamber according to the number of revolutions of the motor 10 and the lead of the lead screw 1401, thereby realizing accurate control of the buoyancy of the automatic buoy. Example

[0065] See also Fig.10 The present embodiment provides a small-scale marine automatic profile buoy airdrop structure, including a profile buoy and an airdrop device. The profile buoy is the automatic profile buoy of Embodiment 1. The airdrop device includes a parachute 16, a loading bucket 18, a release cover 20 and a binding belt 19. The loading bucket 18 is provided with an air inlet hole. The loading bucket 18 is provided with a protection cabin 1803 and a parachute cabin 1802. The parachute 16 is loaded in the parachute cabin 1802, the top end of the profile buoy is loaded in the protection cabin 1803, and the bottom end of the profile buoy is loaded in the release cover 20. The binding belt 19 connects the loading bucket 18 and the release cover 20 to fix the profile buoy between the loading bucket 18 and the release cover 20, and releases the profile buoy after entering the water.

[0066] By using the above-mentioned airdrop device, the top of the profile buoy is loaded in the protection cabin 1803 of the loading bucket 18, the parachute 16 is loaded in the parachute cabin 1802, and the bottom of the profile buoy is loaded in the release cover 20. The loading bucket 18 and the release cover 20 are connected and tightened by the binding belt 19, so that the profile buoy is located between the loading bucket 18 and the release cover 20. After the airdrop device is dropped together with the profile buoy, air enters the loading hole from the air inlet hole on the loading bucket 18, so that the parachute 16 pops out from the parachute cabin 1802, decelerating the entire structure. When the structure enters the water, the binding belt 19 is separated from the release cover 20, so that the profile buoy is separated from the release cover 20 and the loading bucket 18, and the deployment of the profile buoy is completed.

[0067] In order to further facilitate the airdrop deployment of the profile buoy, the structure of the present application also includes a gravity tube 15. The inner wall of the gravity tube 15 is smooth. The diameter of the gravity tube 15 is larger than the outer diameter of the profile buoy. The profile buoy is loaded between the loading bucket 18 and the release cover 20 and then placed in the gravity tube 15, and can slide out along the gravity tube 15.

[0068] See also Figure 11~Figure 12 The loading bucket 18 is made of water-soluble paper material, which can be dissolved after entering the water and safely separated from the profile buoy. It has low cost, light weight, little impact on the profile buoy, is degradable and pollution-free. The loading bucket 18 is a cylindrical structure. A bucket cover 1801 is provided at the upper end of the loading bucket 18. The interior is divided into a parachute compartment 1802 and a protection compartment 1803, which are respectively used to load the parachute 16 and the upper end of the profile buoy, and protect the antenna 1 and observation module 2 exposed to the outside of the profile buoy. The parachute compartment 1802 and the protection compartment 1803 are not connected to each other to prevent the parachute 16 from failing during storage and deployment and being entangled on the antenna 1 and the observation module 2. A step structure is provided on the lower edge of the loading bucket 18 for clamping the upper end cover, and together with the release cover 20, the profile buoy is clamped by the binding belt 19.

[0069] The size and shape of the parachute 16 should be designed in advance according to the required water entry speed. The parachute 16 is connected to the loading bucket 18 through the parachute rope 17, and both are loaded in the parachute compartment 1802. When air enters the parachute compartment 1802 and the bucket cover 1801 is pushed out, the parachute 16 pops out from the parachute compartment 1802 to slow down the entire structure.

[0070] In order to facilitate the release of the binding strap 19 after entering the water, the airdrop device also includes a binding strap 2005, and the release cover 20 includes a cup cover 2001 and a plunger 2002 installed on the cup cover 2001. The binding strap 2005 is circumferentially arranged around the cup cover 2001 and is connected to the plunger 2002 to press one end of the binding strap 19 against the cup cover 2001. The plunger 2002 can be detached from the binding strap 2005 under the action of external force to allow the binding strap 2005 to release the binding strap 19.

[0071] See also Figure 13~Figure 18 The release cover 20 adopts an integrated release cover 20. Compared with the split release cover 20, it will not be separated from the profile buoy immediately after entering the water, which can provide an additional underwater deceleration effect for the profile buoy, so that the profile buoy can dive to a shallower distance and can be airdropped in shallower waters.

[0072] The cup cover 2001 is a cup-shaped structure, and a plunger hole 2009 is provided on the outer side of the bottom of the cup cover 2001. The plunger hole 2009 is a blind hole. The axial dimension of the plunger 2002 is smaller than the axial dimension of the plunger hole 2009, so that the plunger 2002 can move in the plunger hole 2009.

[0073] The plunger 2002 includes a plunger body, a hook 2008, a spring 2007 and a ball 2006. A cavity is provided in the plunger body, and the cavity is arranged along the radial direction of the plunger body. One end of the cavity is open, and the opening is located on the side wall of the plunger 2002. A first groove 2014 is provided on the side wall of the plunger hole 2009 and corresponds to the opening. The first groove 2014 is a spherical structure. The ball 2006 is arranged in the cavity, and one side of the ball extends out of the opening and cooperates with the first groove 2014. The spring 2007 is arranged in the cavity, and one end of the spring 2007 abuts against the other side of the ball 2006, pressing one side of the ball 2006 into the first groove 2014, and there is a travel distance between the inner end of the plunger 2002 and the bottom of the plunger hole 2009. The hook 2008 is fixed on the plunger body, and its hook part extends out of the cup cover 2001. A notch is provided on the side wall of the cup cover 2001 along its axial direction for the hook 2008 to move.

[0074] Under normal conditions, the ball 2006 is pressed into the first groove 2014 by the spring 2007. At this time, there is a travel distance between the inner end of the plunger 2002 and the bottom of the plunger hole 2009. When an external force acts on the plunger 2002, the ball 2006 moves into the cavity and disengages from the first groove 2014, and the plunger 2002 moves toward the bottom of the plunger hole 2009. When the plunger 2002 moves toward the bottom of the plunger hole 2009, the hook 2008 moves along the gap.

[0075] An annular groove 2015 is provided along the circumference of the cup 2001. The strap 2005 is made of elastic material. Two notches are provided at intervals along the length direction of the strap 2005. The two notches can be provided at both ends of the strap 2005. The strap 2005 is wound in the groove 2015, and the two notches overlap and hook on the hook 2008 of the plunger 2002. When the hook 2008 moves toward the bottom of the plunger hole 2009 along with the plunger 2002, the notch of the strap 2005 is separated from the hook 2008, and the strap 2005 can be sprung open under the action of elastic force, releasing the binding belt 19.

[0076] A second groove 2011 is provided on the outer side of the bottom of the cup cover 2001, and a third groove 2012 matching with the second groove 2011 is provided on the outer end surface of the plunger 2002. A cross bar is installed in the second groove 2011 and the third groove 2012 to prevent the plunger 2002 from being accidentally triggered during human operation without affecting the normal triggering under the impact of seawater when entering the water.

[0077] A pin shaft 2003 is fixedly provided at one end of the binding belt 19, and a fourth groove which is recessed inward is provided on the outer wall of the cup cover 2001. A slope is provided on the fourth groove and on the side away from the bottom of the cup cover 2001. One end of the binding belt 19 is engaged in the fourth groove through the pin shaft 2003 and can slide out from the slope of the fourth groove; the other end of the binding belt 19 is bolted to the side wall opening of the loading bucket 18 after passing through the groove 2015, and its outer side is pressed tightly in the groove 2015 by the binding belt 2005.

[0078] At least one leaking hole 2010 is provided at the bottom of the cup cover 2001, through which water can flow freely, so as to separate the release cover 20 from the bottom of the profile buoy. The release cover 20 also includes a second torsion spring 2004, a fifth groove 2013 is provided on the inner side of the bottom of the release cover 20, and the second torsion spring 2004 is rotatably installed in the fifth groove 2013, and the two ends of the second torsion spring are respectively inserted into the through holes provided on the cup cover, and the rebound end of the second torsion spring is against the bottom end of the profile buoy.

[0079] When the release cover 20 and the profile buoy enter the water, the binding belt 19 detaches from the release cover 20 to release the restraint on it; since the release cover 20 is located at the bottom end of the profile buoy, the release cover 20 will still dive a certain distance with the profile buoy. During this process, water continuously flows into the release cover 20 from the leakage hole 2010. When the sum of the gravity of the release cover 20 and the elastic force of the second torsion spring 2004 is greater than the resistance of the water, the release cover 20 is bounced off from the bottom end of the profile buoy under the action of the second torsion spring 2004, thereby separating from the profile buoy. When the two are separated, the release cover 20 does not pass through the profile buoy and will not scratch the surface of the profile buoy.

[0080] The method to apply for airdrop is as follows:

[0081] S1. Load the two ends of the profile buoy into the corresponding loading bucket 18 and release cover 20 respectively. The strap 2005 is circumferentially arranged around the release cover 20 and hooked on the hook 2008 of the plunger 2002. One end of the binding belt 19 is connected to the loading bucket 18, and the other end is fitted on the release cover 20 and pressed by the strap 2005 to clamp the profile buoy between the loading bucket 18 and the release cover 20; then load them into the gravity tube 15 together.

[0082] S2. After being loaded by an airplane to a designated sea area, the loading bucket 18 and the release cover 20 clamp the profile buoy and slide down from the gravity tube 15.

[0083] S3, air enters the loading barrel 18 through the air inlet, pushes the barrel cover 1801 open, and the parachute 16 pops out from the loading barrel 18 to slow down.

[0084] S4. When the profile buoy, loading bucket 18 and release cover 20 enter the water, the plunger 2002 moves to the bottom of the plunger hole 2009 under the impact of seawater, the tie belt 2005 detaches from the hook 2008 and releases the binding belt 19, and the loading bucket 18 detaches from the top of the profile buoy.

[0085] S5. Seawater enters the release cover 20, and when the sum of the elastic force of the second torsion spring 2004 and the gravity of the release cover 20 exceeds the resistance of the seawater, the release cover 20 is ejected from the profile buoy by the second torsion spring 2004, completing the airdrop deployment of the profile buoy.

[0086] The present application adopts the above-mentioned airdrop device. In the stage of preparing for airdrop deployment, the stabilizing plate 4 is screwed to the top cover 3 of the profile buoy through the flange 401, all blades 405 are pressed by the lower edge of the loading barrel 18 and fit the pressure-resistant shell 5, and the spring plunger 404 and the first torsion spring 403 are compressed. The parachute 16 and the parachute rope 17 are installed in the parachute compartment 1802 of the loading barrel 18, and the barrel cover 1801 of the loading barrel 18 is pressed on the upper opening to prevent the parachute 16 from accidentally popping out.

[0087] At this time, the integrated release cover 20 is in an untriggered state, and the ball-shaped member 2006 and the spring 2007 press the plunger 2002 into the plunger hole 2009 of the release cover 20, so that the plunger 2002 does not move up and down in the plunger hole 2009. The release cover 20 is sleeved on the bottom end cover 6 of the profile buoy, and the second torsion spring 2004 in the release cover 20 is pressed into the fifth groove 2013 on the inner side of the bottom of the release cover 20. The strap 2005 is wound in the groove 2015 and hooked on the hook 2008 of the plunger 2002 through the notch. One end of the binding belt 19 is pressed by the strap 2005, and the other end is fixed on the loading bucket 18; since the second torsion spring 2004 has a certain elastic potential energy after being pressed, the binding belt 19 can tighten the loading bucket 18 and the release cover 20 at both ends of the profile buoy, ensuring that the profile buoy and the airdrop device will not separate during the airdrop process.

[0088] The profile buoy and the airdrop device can be deployed by loading them into the launcher of the aircraft or the gravity tube 15. When the aircraft flies to the designated sea area, the profile buoy slides away from the aircraft through the gravity tube 15. After the air enters the loading bucket 18 from the air inlet on the side of the loading bucket 18, the bucket cover 1801 separates from the loading bucket 18, and the parachute 16 pops out to decelerate the entire structure.

[0089] When the profile buoy enters the water, the integrated release cover 20 at its bottom first contacts the seawater. Due to the impact of the seawater, the plunger 2002 gets rid of the pressing force of the ball-shaped part 2006 and the spring 2007, and moves along the plunger hole 2009 of the release cover 20 with the hook 2008. The hook 2008 moves out of the notches at both ends of the strap 2005. Since the strap 2005 is made of elastic material, it pops out of the groove 2015 of the cup 2001 and separates. The binding belt 19 originally pressed by the strap 2005 in the groove 2015 of the cup 2001 is separated from the cup 2001, so that the integrated release cover 20 is separated from the profile buoy, but it will dive with the profile buoy for a certain distance. When the sum of the elastic force of the second torsion spring 2004 and the gravity of the integrated release cover 20 exceeds the resistance of the water, the integrated release cover 20 will pop off the profile buoy under the action of the second torsion spring 2004. Since the integrated release cover 20 is pushed downward away from the profile buoy and does not pass through the profile buoy, there is no risk of scratching the shell; and the airdrop device of the present application will still follow the profile buoy for a certain distance after entering the water, so the deceleration effect is better and the diving distance of the profile buoy is shallower. After the airdrop is completed, all other airdrop device components except the integrated release cover 20 will be separated from the profile buoy from the upper end.

[0090] After the airdrop device is separated from the profile buoy, the blade 405 of the stabilizing plate 4 is popped open by the first torsion spring 403, and the spring plunger 404 pops out and is inserted into the limiting hole of the blade 405. The blade 405 no longer rotates around the intermediate shaft 402 and is completely fixed. Since the blade 405 has a concave surface and is facing downward, the profile buoy can achieve rapid climbing and more stable communication on the water surface during detection.

[0091] After the profile buoy enters the water, it starts normal detection work, and the communication module 9 and the antenna 1 send and receive instructions and transmit data. When the profile buoy needs to dive, the motor 10 rotates forward, and the output shaft of the motor 10 drives the lead screw 1401 to rotate; because the lead screw nut 1405 threadedly installed on the lead screw 1401 is fixed with the piston push rod 1411, the lead screw nut 1405 can only move along the axial direction of the lead screw 1401, thereby driving the piston push rod 1411 to move along the axial direction of the lead screw 1401; because the piston push rod 1411 is designed with a dynamic sealing structure, when it moves into the cabin, there is a pressure difference between the water inlet cavity and the outside world, and the external water enters the water inlet cavity through the filter installed in the plug 7. At this time, the displacement volume of the profile buoy is reduced, and the buoyancy in the water is reduced, and it dives when the gravity is greater than the buoyancy.

[0092] Similarly, when the profile buoy needs to float up, the motor 10 and the lead screw 1401 are reversed, and the lead screw nut 1405 drives the piston push rod 1411 to move out of the cabin, and the water in the water inlet cavity is discharged to the outside of the profile buoy through the filter. The drainage volume of the equipment increases, and the buoyancy in the water increases, and the buoyancy moves upward when the buoyancy is greater than the gravity.

[0093] In this application, unless otherwise clearly specified and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0094] In the specification of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, systems and techniques are not shown in detail so as not to obscure the understanding of this specification.

[0095] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, systems, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, systems, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A small-scale marine automatic profile buoy airdrop structure, characterized in that: It comprises a profile buoy and an airdrop device, wherein the profile buoy comprises a pressure cabin, an antenna, an observation module, a control module, a communication module, a battery module and a buoyancy adjustment system, and is characterized in that it also comprises a stabilizing disk, wherein the pressure cabin is a one-stage cylindrical structure, comprising a pressure shell and a top end cover and a bottom end cover respectively mounted on the top end and the bottom end of the pressure shell; the antenna and the observation module are respectively mounted on the top end cover, and the communication module, the control module, the battery module and the buoyancy adjustment system are all mounted in the pressure cabin; the stabilizing disk comprises a plurality of blades, the plurality of blades are arranged at intervals along the circumference of the pressure shell, and one end of each blade is hinged to the pressure shell, and can be rotated to a folded state under the action of an external force or rotated to an unfolded state after the external force is removed; The airdrop device comprises a parachute, a loading bucket, a release cover and a binding belt, wherein the loading bucket is provided with an air inlet hole, a protection cabin and a parachute cabin are provided in the loading bucket, the parachute is loaded in the parachute cabin, the top end of the profile buoy is loaded in the protection cabin, the bottom end of the profile buoy is loaded in the release cover, the binding belt connects the loading bucket and the release cover to fix the profile buoy between the loading bucket and the release cover, and releases the profile buoy after entering the water; The airdrop device also includes a strap, and the release cover includes a cup cover and a plunger installed on the cup cover. The strap is circumferentially arranged around the cup cover and is connected to the plunger to press one end of the strap against the cup cover. The plunger can be detached from the strap under the action of external force to allow the strap to release the strap.

2. The small-scale marine automatic profile buoy airdrop structure according to claim 1 is characterized in that: The buoyancy adjustment system includes a motor and a buoyancy adjustment module, the buoyancy adjustment module includes a lead screw, a lead screw nut, a lead screw protective cover and a piston push rod, the bottom end cover is provided with a water inlet chamber, the piston push rod is placed in the water inlet chamber, the lead screw nut is non-rotatably installed in the lead screw protective cover and is fixedly connected to the piston push rod, one end of the lead screw is connected to the output shaft of the motor, and the other end is inserted into the piston push rod and cooperates with the lead screw nut thread to drive the piston push rod to reciprocate in the water inlet chamber.

3. The small-scale marine automatic profile buoy airdrop structure according to claim 2 is characterized in that: It also includes a plug, which is fixed on the bottom end cover. The plug is provided with a water inlet connected to the water inlet cavity, and a filter is provided in the water inlet.

4. The small-scale marine automatic profile buoy airdrop structure according to claim 2 is characterized in that: The buoyancy adjustment module also includes a rotation-stopping member, which is provided with an opening along the length direction of the lead screw protective cover, one end of the rotation-stopping member is fixed on the lead screw nut, and the other end is limited in the opening.

5. The small-scale ocean automatic profile buoy airdrop structure according to claim 1 is characterized in that: The stabilizing disk includes a locking mechanism, which is mounted on the outer wall of the pressure cabin and is connected to the blade to limit the rotation of the blade when the blade rotates to the unfolded state.

6. The small-scale marine automatic profile buoy airdrop structure according to claim 1 is characterized in that: The stabilizing disk includes an intermediate shaft and a first torsion spring. The blade is hinged to the outer wall of the pressure-resistant cabin via the intermediate shaft. The first torsion spring is mounted on the intermediate shaft, with one end of the first torsion spring resting against the outer wall of the pressure-resistant cabin and the other end resting against the blade.

7. The small-scale marine automatic profile buoy airdrop structure according to claim 1 is characterized in that: The release cover also includes a second torsion spring, which is rotatably installed in the cup cover, with one end of the second torsion spring against the inner side of the cup cover and the other end against the bottom end of the profile buoy.

8. The small-sized marine automatic profile buoy airdrop structure according to any one of claims 1 to 7, characterized in that: It also includes a gravity tube, the inner wall of which is smooth. The diameter of the gravity tube is larger than the outer diameter of the profile buoy. The profile buoy is loaded between the loading bucket and the release cover and then placed in the gravity tube, and can slide out along the gravity tube.

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