Buoyancy adjusting system

Abstract

The buoyancy adjusting system comprises a mounting base, a corrugated pipe assembly and a driving rod, the corrugated pipe assembly comprises a corrugated pipe, a first end cover and a second end cover, a drainage space is formed in the corrugated pipe, and in the axial direction of the corrugated pipe, the first end cover and the second end cover block the two ends of the corrugated pipe correspondingly; in the circumferential direction of the corrugated pipe, the first end cover is in limiting fit with the mounting base, the driving rod extends in the axial direction of the corrugated pipe and comprises a first rod body and a second rod body, the first rod body rotatably penetrates through the mounting base, the mounting base is provided with a lead screw nut, and in the circumferential direction of the lead screw nut, the lead screw nut is in limiting fit with the mounting base; the lead screw nut is arranged on the first rod body in a sleeving mode and matched with the first rod body in a threaded mode. The second rod body is arranged on the first end cover in a penetrating mode and connected between the lead screw nut and the second end cover. The buoyancy adjusting system is simple in structure, easy to maintain and repair and low in cost, and meanwhile the safety of the buoyancy adjusting system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of underwater observation devices, and in particular to a buoyancy adjustment system. Background Art

[0002] At present, underwater submersibles usually use a buoyancy regulation system as a power source for ascending and descending movements. A stable and low-power buoyancy regulation system is the core unit of the underwater submersible. In the related art, the buoyancy regulation system of the underwater submersible has a complex structure, is expensive, is not conducive to maintenance and repair, and has poor sealing, which makes it prone to leakage risks. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes a buoyancy adjustment system, which has a simple structure, is easy to maintain and repair, and has a low cost. In particular, the bellows is used as a deformable telescopic shell, and the way in which the buoyancy adjustment system changes the displacement volume is changed to a static seal, thereby increasing the safety of the buoyancy adjustment system.

[0004] According to the buoyancy regulating system of the embodiment of the present application, it includes: a mounting seat; a bellows assembly, the bellows assembly includes a bellows, a first end cover and a second end cover, a drainage space is formed in the bellows, in the axial direction of the bellows, the first end cover and the second end cover respectively block the two ends of the bellows, the first end cover is connected to the mounting seat, and in the circumferential direction of the bellows, the first end cover and the mounting seat are limitedly matched; a driving rod, the driving rod extends along the axial direction of the bellows and includes a first rod body and a second rod body, the first rod body is rotatably penetrated into the mounting seat, the mounting seat is provided with a lead screw nut, in the circumferential direction of the lead screw nut, the lead screw nut and the mounting seat are limitedly matched, the lead screw nut is sleeved on the first rod body and threadedly matched with the first rod body, the second rod body is penetrated through the first end cover and connected between the lead screw nut and the second end cover.

[0005] According to the buoyancy adjustment system of the embodiment of the present application, its lead screw nut cooperates with the thread of the first rod body, so that when the first rod body rotates, the lead screw nut can drive the second rod body to move along the axial direction of the bellows, so that in the axial direction of the bellows, the second rod body can drive the second end cover to move relative to the first end cover to change the distance between the first end cover and the second end cover, that is, change the axial dimension of the bellows, and then change the volume of the drainage space to realize the buoyancy or diving movement of the underwater submersible. Such an arrangement makes the buoyancy adjustment system simple in structure, easy to maintain and repair, and low in cost. In particular, the bellows is used as a deformable telescopic shell, and the way the buoyancy adjustment system changes the drainage volume is changed to a static seal, thereby increasing the safety of the buoyancy adjustment system.

[0006] According to some embodiments of the present application, the buoyancy regulating system further includes: a driving motor, which is mounted on the mounting seat, and a driving wheel is provided on the output end fixing sleeve of the driving motor, and a driven wheel is provided on the fixed sleeve on the first rod body, and the driving wheel and the driven wheel are connected to each other through a transmission belt.

[0007] According to the buoyancy regulating system of some embodiments of the present application, in the axial direction of the bellows, the drive motor is located on a side of the mounting seat away from the first end cover.

[0008] According to some embodiments of the present application, the buoyancy regulating system further includes: a brake assembly, which is mounted on the mounting seat and has a locked state and an unlocked state. In the locked state, the brake assembly is locked and matched with the first rod body in the circumferential direction of the drive rod, and in the unlocked state, the brake assembly is unlocked and matched with the first rod body in the circumferential direction of the drive rod.

[0009] According to some embodiments of the buoyancy regulating system of the present application, the brake assembly includes: a mating gear and a driving member, the mating gear is fixedly mounted on the first rod body, the driving member is installed on the mounting seat, and in the locked state, at least a portion of the output end of the driving member is inserted into any tooth groove of the mating gear, and in the unlocked state, the output end of the driving member is separated from the mating gear.

[0010] According to the buoyancy regulating system of some embodiments of the present application, in the axial direction of the bellows, the mating gear is located on the side of the driven wheel away from the bellows.

[0011] According to the buoyancy regulating system of some embodiments of the present application, the mounting seat is provided with an angular contact bearing, and the angular contact bearing is sleeved on the first rod body; and / or the second end cover is provided with a thrust bearing, and the thrust bearing is sleeved on the driving rod.

[0012] According to some embodiments of the present application, the buoyancy regulating system further includes: a displacement sensor, which is installed on the mounting seat and is used to detect the displacement of the second end cover.

[0013] According to the buoyancy regulating system of some embodiments of the present application, the displacement sensor is disposed through the mounting seat, and the orthographic projection of the displacement sensor on the bellows falls on the outside of the bellows.

[0014] According to the buoyancy regulating system of some embodiments of the present application, the bellows assembly further includes an elastic member, wherein the elastic member is located in the drainage space, and the elastic member is elastically connected between the first end cover and the second end cover.

[0015] 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

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A schematic diagram of a buoyancy adjustment system according to some embodiments of the present application;

[0018] Figure 2 An exploded view of a bellows assembly according to some embodiments of the present application;

[0019] Figure 3 A cross-sectional view of a buoyancy regulating system according to some embodiments of the present application;

[0020] Figure 4 Schematic diagram of a brake assembly according to some embodiments of the present application.

[0021] Reference numerals:

[0022] Buoyancy adjustment system 100;

[0023] Mounting seat 10;

[0024] Bellows assembly 20; bellows 21; first end cover 22; second end cover 23; connecting flange 24; elastic member 25;

[0025] Driving rod 30; first rod body 31; second rod body 32; driven wheel 33; transmission belt 34;

[0026] Screw nut 40; drive motor 50; driving wheel 51;

[0027] Braking assembly 60; matching gear 61; driving member 62; braking rod 63;

[0028] Travel switch connecting rod 64; travel switch trigger block 65; travel switch 66;

[0029] PCB board 67; ratchet structure brake sleeve 68; pin 69;

[0030] Angular contact bearing 71; thrust bearing 72;

[0031] Displacement sensor 80. DETAILED DESCRIPTION

[0032] In order to better understand the technical solutions provided by the embodiments of this specification, the technical solutions of the embodiments of this specification are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of this specification and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this specification, rather than limitations on the technical solutions of this specification. In the absence of conflict, the embodiments of this specification and the technical features in the embodiments can be combined with each other.

[0033] In this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or equipment. In the absence of more restrictions, the elements limited by the statement "comprise one..." do not exclude the existence of other identical elements in the process, method, article or equipment including the elements. The term "more than two" includes two or more than two situations.

[0034] At present, underwater submersibles usually use a buoyancy regulation system 100 as a power source for ascending and descending movements. A stable and low-power buoyancy regulation system 100 is the core unit of the underwater submersible. In the related art, the buoyancy regulation system 100 of the underwater submersible has a complex structure, is expensive, is not conducive to maintenance and repair, and has poor sealing, which makes it prone to leakage risks.

[0035] In this regard, the present application proposes a buoyancy regulating system 100, which has a simple structure, is easy to maintain and repair, and has low cost. In particular, the bellows 21 is used as a deformable telescopic shell, and the way the buoyancy regulating system 100 changes the displacement volume is changed to a static seal, thereby increasing the safety of the buoyancy regulating system 100.

[0036] Please refer to the following Figure 1-4 The buoyancy regulating system 100 according to an embodiment of the present application is described.

[0037] like Figure 1 As shown, the buoyancy regulating system 100 according to the embodiment of the present application includes: a mounting seat 10 , a bellows assembly 20 and a driving rod 30 .

[0038] like Figure 2As shown, the bellows assembly 20 includes a bellows 21, a first end cover 22 and a second end cover 23. A drainage space is formed in the bellows 21. In the axial direction of the bellows 21, the first end cover 22 and the second end cover 23 respectively block the two ends of the bellows 21.

[0039] As a result, the bellows 21, the first end cover 22 and the second end cover 23 jointly define a sealed drainage space. It can be understood that the bellows 21 of the present application refers to a tubular elastic sensitive element connected along the folding and expansion direction of the foldable corrugated sheet, and the folding and expansion direction of the bellows 21 of the present application is the axial direction of the bellows 21. Therefore, the bellows 21 can be folded or expanded in the axial direction.

[0040] The first end cover 22 and the second end cover 23 respectively block the two ends of the bellows 21, so that the bellows 21, the first end cover 22 and the second end cover 23 jointly define a closed drainage space. When the buoyancy adjustment system 100 is applied to an underwater submersible, the size of the drainage space can be proportional to the drainage volume of the buoyancy adjustment system 100. In this way, the axial dimension of the bellows 21 can be changed, thereby changing the volume of the drainage space to achieve the floating or diving movement of the underwater submersible.

[0041] Furthermore, the first end cover 22 is connected to the mounting seat 10. In the circumferential direction of the bellows 21, the first end cover 22 and the mounting seat 10 are limitedly matched. Figure 3 As shown, the driving rod 30 (as Figure 1 The driving rod 30 in the embodiment extends along the axial direction of the bellows 21 and includes a first rod body 31 and a second rod body 32. The first rod body 31 is rotatably inserted into the mounting seat 10. The mounting seat 10 is provided with a lead screw nut 40. In the circumferential direction of the lead screw nut 40, the lead screw nut 40 is limitedly matched with the mounting seat 10. The lead screw nut 40 is sleeved on the first rod body 31 and threadedly matched with the first rod body 31. The second rod body 32 is inserted into the first end cover 22 and connected between the lead screw nut 40 and the second end cover 23.

[0042] It can be understood that the first rod body 31 and the screw nut 40 form a threaded fit. Since the screw nut 40 and the mounting seat 10 are limited in the circumferential direction of the screw nut 40, the screw nut 40 will not rotate synchronously with the first rod body 31. In this way, when the first rod body 31 rotates, the screw nut 40 will move axially along the first rod body 31 relative to the first rod body 31. Since the second rod body 32 is inserted into the first end cover 22 and connected between the screw nut 40 and the second end cover 23, the screw nut 40 drives the second rod body 32 to push the second end cover 23 to move axially along the bellows 21, and then changes the distance between the first end cover 22 and the second end cover 23 in the axial direction of the bellows 21, that is, changes the axial size of the bellows 21, and then changes the volume of the drainage space to realize the floating or diving movement of the underwater submersible.

[0043] For example, when the first rod body 31 rotates clockwise, the screw nut 40 will move relative to the first rod body 31 along the axial direction of the first rod body 31 toward the second end cover 23, and the screw nut 40 will drive the second rod body 32 to push the second end cover 23 to move along the axial direction of the bellows 21 toward the direction away from the first end cover 22, thereby increasing the distance between the first end cover 22 and the second end cover 23 in the axial direction of the bellows 21, that is, increasing the axial dimension of the bellows 21, thereby realizing the buoyancy movement of the underwater submersible.

[0044] Alternatively, when the first rod body 31 rotates counterclockwise, the screw nut 40 will move relative to the first rod body 31 along the axial direction of the first rod body 31 toward a direction away from the second end cover 23, and the screw nut 40 will drive the second rod body 32 to push the second end cover 23 to move along the axial direction of the bellows 21 toward a direction close to the first end cover 22, thereby reducing the distance between the first end cover 22 and the second end cover 23 in the axial direction of the bellows 21, that is, reducing the axial dimension of the bellows 21, thereby realizing the diving movement of the underwater submersible.

[0045] Of course, the above-mentioned rotation direction is only used for illustration and does not represent a limitation thereto.

[0046] According to the buoyancy regulating system 100 of the embodiment of the present application, its lead screw nut 40 cooperates with the thread of the first rod body 31, so that when the first rod body 31 rotates, the lead screw nut 40 can drive the second rod body 32 to move along the axial direction of the bellows 21, so that in the axial direction of the bellows 21, the second rod body 32 can drive the second end cover 23 to move relative to the first end cover 22 to change the distance between the first end cover 22 and the second end cover 23, that is, change the axial dimension of the bellows 21, and then change the volume of the drainage space to realize the buoyancy or diving movement of the underwater submersible. This arrangement makes the buoyancy regulating system 100 simple in structure, easy to maintain and repair, and low in cost. In particular, the bellows 21 is used as a deformable telescopic shell, and the way the buoyancy regulating system 100 changes the drainage volume is changed to a static seal, thereby increasing the safety of the buoyancy regulating system 100.

[0047] In some embodiments, Figure 2 As shown, the bellows assembly 20 also includes a connecting flange 24, which is connected between the first end cover 22 and the bellows 21, and the connecting flange 24 is provided with a sealing protrusion for sealing with the inner circumferential wall of the bellows 21, so that the connection sealing between the connecting flange 24 and the bellows 21 can be enhanced.

[0048] In some embodiments, Figure 3As shown, the buoyancy adjustment system 100 also includes: a driving motor 50, which is installed on the mounting seat 10, and a driving wheel 51 is fixedly sleeved on the output end of the driving motor 50, and a driven wheel 33 is fixedly sleeved on the first rod body 31, and the driving wheel 51 and the driven wheel 33 are connected to each other through a transmission belt 34.

[0049] It can be understood that when the output end of the driving motor 50 rotates, the driving wheel 51 rotates synchronously with the output end of the driving motor 50, and then the rotation of the driving wheel 51 is transmitted to the driven wheel 33 through the transmission belt 34, thereby realizing the synchronous rotation of the driven wheel 33 and the driving wheel 51, and then the driven wheel 33 drives the first rod body 31 to rotate. In this way, the rotation of the first rod body 31 can be realized by the driving motor 50.

[0050] Among them, since the output end of the drive motor 50 and the first rod body 31 are connected through the setting of the driving wheel 51, the transmission belt 34 and the driven wheel 33, there is no direct power connection between the output end of the drive motor 50 and the first rod body 31, so that the rotational speed of the output end of the drive motor 50 and the rotational speed of the first rod body 31 can be adjusted through the transmission of the driving wheel 51, the transmission belt 34 and the driven wheel 33.

[0051] For example, in some implementations, the rotation radius of the driving wheel 51 is greater than the rotation radius of the driven wheel 33 , so that the output end of the drive motor 50 can use a smaller driving force to realize the rotation of the first rod body 31 , thereby facilitating reducing the energy consumption of the drive motor 50 .

[0052] Alternatively, in some implementations, the rotation radius of the driving wheel 51 is smaller than the rotation radius of the driven wheel 33. In this way, when the output end of the driving motor 50 drives the first rod body 31 to rotate, the rotation angle of the first rod body 31 can be finely controlled, thereby facilitating improving the control accuracy of the buoyancy adjustment system 100.

[0053] In some embodiments, Figure 3 As shown, the drive motor 50 is located radially outside the first rod 31 , so that the drive motor 50 does not occupy the axial space of the first rod 31 , thereby facilitating the reduction of the axial volume of the buoyancy regulating system 100 of the first rod 31 .

[0054] In some embodiments, Figure 1 and Figure 3 As shown, in the axial direction of the bellows 21 , the drive motor 50 is located on the side of the mounting seat 10 away from the first end cover 22 .

[0055] As a result, the setting of the drive motor 50 will not occupy the space on one side of the bellows assembly 20, which makes it easy to reduce the difficulty of setting the drive motor 50. The drive motor 50 is arranged on the side of the mounting seat 10 that is axially away from the first end cover 22 of the bellows 21, so that the drive motor 50 and the mounting seat 10 are arranged in the axial direction of the bellows 21. In this way, the radial space of the bellows 21 will not be occupied, which is beneficial to reducing the radial size of the buoyancy regulating system 100 in the bellows 21.

[0056] In some embodiments, the buoyancy regulating system 100 also includes: a brake assembly 60, which is installed on the mounting seat 10, and the brake assembly 60 has a locked state and an unlocked state. In the locked state, the brake assembly 60 is locked and matched with the first rod body 31 in the circumferential direction of the driving rod 30, and in the unlocked state, the brake assembly 60 is unlocked and matched with the first rod body 31 in the circumferential direction of the driving rod 30.

[0057] Therefore, when it is necessary to maintain the current displacement volume, the brake assembly 60 can be locked with the first rod body 31 in the circumferential direction of the drive rod 30 to prevent the first rod body 31 from rotating, so that the screw nut 40 and the second rod body 32 stop moving, and the distance between the second end cover 23 and the first end cover 22 will not change, thereby maintaining the current displacement volume of the buoyancy regulating system 100.

[0058] Furthermore, when it is necessary to change the current displacement volume, the brake assembly 60 can be unlocked and cooperated with the first rod body 31 in the circumferential direction of the drive rod 30, so that the drive motor 50 can drive the first rod body 31 to continue to rotate, so that the screw nut 40 and the second rod body 32 continue to move, thereby changing the distance between the second end cover 23 and the first end cover 22, thereby changing the current displacement volume of the buoyancy adjustment system 100.

[0059] In some embodiments, the brake assembly 60 includes: a mating gear 61 and a driving member 62, the mating gear 61 is fixedly sleeved on the first rod body 31, and the driving member 62 is installed on the mounting seat 10. When in the locked state, at least part of the output end of the driving member 62 is inserted into any tooth groove of the mating gear 61. When in the unlocked state, the output end of the driving member 62 is separated from the mating gear 61.

[0060] Therefore, in the locked state, the output end of the driving member 62 can be inserted into any tooth groove of the mating gear 61 to brake the mating gear 61, thereby preventing the first rod body 31 from rotating, so that the screw nut 40 and the second rod body 32 stop moving, and the distance between the second end cover 23 and the first end cover 22 will not change, thereby maintaining the current displacement volume of the buoyancy regulating system 100.

[0061] Alternatively, when in the unlocked state, the output end of the driving member 62 is separated from the gear to release the brake on the mating gear 61, so that the driving motor 50 can drive the first rod body 31 to continue to rotate, so that the screw nut 40 and the second rod body 32 continue to move, thereby changing the distance between the second end cover 23 and the first end cover 22, thereby changing the current displacement volume of the buoyancy regulating system 100.

[0062] In other embodiments, the brake assembly 60 also includes a brake rod 63, a travel switch connecting rod 64, a travel switch trigger block 65, a travel switch 66, a PCB board 67, a ratchet structure brake sleeve 68 and a pin 69. The PCB board 67 is electrically connected to the driving member 62. Two travel switches 66 are electrically connected to the PCB board 67. The travel switch trigger block 65 is connected to the travel switch connecting rod 64, and the travel switch trigger block 65 is suitable for moving between the two travel switches 66. The brake rod 63 is connected to the output end of the driving member 62 and is threadedly matched with the output end of the driving member 62. The ratchet structure brake sleeve 68 is connected to the driving member 62 and is sleeved on the brake rod 63. The pin 69 is penetrated by the ratchet structure brake sleeve 68 and extends into the thread of the brake rod 63.

[0063] When the travel switch trigger block 65 abuts against a travel switch 66, the output end of the driving member 62 rotates in a first direction. Due to the setting of the pin 69, the brake rod 63 moves axially at the output end of the driving member 62 to extend into any tooth groove of the matching gear 61. When the travel switch trigger block 65 abuts against another travel switch 66, the output end of the driving member 62 rotates in a second direction. Due to the setting of the pin 69, the brake rod 63 moves axially at the output end of the driving member 62 to separate from the matching gear 61, wherein the first direction and the second direction are opposite.

[0064] Therefore, the travel switch trigger block 65 can be offset against different travel switches 66 to change the rotation direction of the output end of the driving member 62, thereby achieving the switching of the brake assembly 60 between the locked state and the unlocked state.

[0065] In some embodiments, in the axial direction of the bellows 21 , the mating gear 61 is located on a side of the driven wheel 33 that is away from the bellows 21 .

[0066] This makes it easy to reduce the difficulty of setting the mating gear 61 , and when at least part of the output end of the driving member 62 is inserted into any tooth groove of the mating gear 61 , the risk of interference between the output end of the driving member 62 and the driven wheel 33 can be reduced.

[0067] In some embodiments, the mounting seat 10 is provided with an angular contact bearing 71 , and the angular contact bearing 71 is sleeved on the first rod 31 .

[0068] Therefore, the radial and axial loads of the first rod body 31 can be supported by the angular contact bearing 71, so that the first rod body 31 can maintain high precision and stability under high-speed operation. At the same time, it can avoid causing additional axial force, and the first rod body 31 can be limited to the axial clearance range in the radial and axial directions of the first rod body 31, thereby ensuring the rotational stability of the first rod body 31.

[0069] In some embodiments, the second end cover 23 is provided with a thrust bearing 72 , and the thrust bearing 72 is sleeved on the driving rod 30 .

[0070] It can be understood that the thrust bearing 72 is a special bearing specifically designed to withstand axial force. Therefore, the thrust bearing 72 can be used to bear the axial thrust of the second rod body 32 on the bellows 21, thereby ensuring the stability of the second rod body 32 when pushing the second end cover 23 to move axially along the bellows 21.

[0071] In some implementations, the thrust bearing 72 includes a thrust ball bearing, a tapered roller bearing, a spherical roller bearing, and a roller thrust bearing 72 . The thrust ball bearing includes a one-way plane bearing, a one-way deep groove bearing, and a two-way deep groove bearing.

[0072] In some embodiments, the mounting seat 10 is provided with an angular contact bearing 71 , which is sleeved on the first rod body 31 , and the second end cover 23 is provided with a thrust bearing 72 , which is sleeved on the driving rod 30 .

[0073] Therefore, the radial and axial loads of the first rod body 31 can be supported by the angular contact bearing 71, so that the first rod body 31 can maintain high precision and stability under high-speed operation. At the same time, the thrust bearing 72 can be used to bear the axial thrust of the second rod body 32 on the bellows 21, thereby ensuring the stability of the second rod body 32 when pushing the second end cover 23 to move axially along the bellows 21.

[0074] In some embodiments, the buoyancy regulating system 100 further includes a displacement sensor 80 , which is mounted on the mounting seat 10 and is used to detect the displacement of the second end cap 23 .

[0075] Thus, the displacement of the second end cover 23 can be detected by the displacement sensor 80 , and the user can determine the current water discharge amount according to the value change of the displacement sensor 80 .

[0076] In some embodiments, the displacement sensor 80 is disposed through the mounting seat 10 , and the orthographic projection of the displacement sensor 80 on the bellows 21 falls on the outside of the bellows 21 .

[0077] Therefore, the installation of the displacement sensor 80 will not interfere with the bellows 21 , thereby reducing the difficulty of installing the displacement sensor 80 .

[0078] In some embodiments, the bellows assembly 20 further includes an elastic member 25 . The elastic member 25 is located in the drainage space. The elastic member 25 is elastically connected between the first end cover 22 and the second end cover 23 .

[0079] It is understandable that when the buoyancy regulating system 100 is located in water, the water will generate a certain pressure on the second end cover 23. Therefore, by providing the elastic member 25, the elastic member 25 can support the second end cover 23 together with the second rod body 32, that is, the elastic member 25 is used to offset part of the sea water pressure, thereby reducing the stress concentration on the second rod body 32.

[0080] In some embodiments, the bellows 21 is made of corrosion-resistant metal, so that when the buoyancy adjustment system 100 is used in seawater, the corrosion of the bellows 21 by seawater is reduced.

[0081] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0082] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application 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 make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

[0083] Although the preferred embodiments of this specification have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of this specification.

[0084] Obviously, those skilled in the art can make various changes and modifications to this specification without departing from the spirit and scope of this specification. Thus, if these modifications and variations of this specification fall within the scope of the claims of this specification and their equivalents, this specification is also intended to include these modifications and variations.

Claims

1. A buoyancy adjustment system (100), characterized in that: include: Mounting seat (10); A bellows assembly (20), the bellows assembly (20) comprising a bellows (21), a first end cover (22) and a second end cover (23), a drainage space being formed in the bellows (21), the first end cover (22) and the second end cover (23) respectively blocking two ends of the bellows (21) in the axial direction of the bellows (21), the first end cover (22) being connected to the mounting seat (10), and the first end cover (22) being limitedly matched with the mounting seat (10) in the circumferential direction of the bellows (21); A driving rod (30), the driving rod (30) extending along the axial direction of the bellows (21) and comprising a first rod body (31) and a second rod body (32), the first rod body (31) being rotatably inserted into the mounting seat (10), the mounting seat (10) being provided with a lead screw nut (40), the lead screw nut (40) being limitedly engaged with the mounting seat (10) in the circumferential direction of the lead screw nut (40), the lead screw nut (40) being sleeved on the first rod body (31) and being threadedly engaged with the first rod body (31), the second rod body (32) being inserted into the first end cover (22) and connected between the lead screw nut (40) and the second end cover (23).

2. The buoyancy adjustment system (100) according to claim 1, characterized in that: Also includes: A driving motor (50) is mounted on the mounting seat (10), and a driving wheel (51) is fixedly provided on the output end of the driving motor (50), and a driven wheel (33) is fixedly provided on the first rod body (31), and the driving wheel (51) and the driven wheel (33) are connected to each other by a transmission belt (34).

3. The buoyancy adjustment system (100) according to claim 2, characterized in that: In the axial direction of the bellows (21), the drive motor (50) is located on a side of the mounting seat (10) facing away from the first end cover (22).

4. The buoyancy adjustment system (100) according to claim 3, characterized in that: Also includes: A brake assembly (60), wherein the brake assembly (60) is mounted on the mounting seat (10), and the brake assembly (60) has a locked state and an unlocked state. In the locked state, the brake assembly (60) is locked and matched with the first rod body (31) in the circumferential direction of the driving rod (30), and in the unlocked state, the brake assembly (60) is unlocked and matched with the first rod body (31) in the circumferential direction of the driving rod (30).

5. The buoyancy adjustment system (100) according to claim 4, characterized in that: The brake assembly (60) comprises: a matching gear (61) and a driving member (62), wherein the matching gear (61) is fixedly sleeved on the first rod body (31), and the driving member (62) is mounted on the mounting seat (10). In the locked state, at least a portion of the output end of the driving member (62) is inserted into any tooth groove of the matching gear (61), and in the unlocked state, the output end of the driving member (62) is separated from the matching gear (61).

6. The buoyancy adjustment system (100) according to claim 5, characterized in that: In the axial direction of the bellows (21), the matching gear (61) is located on a side of the driven wheel (33) facing away from the bellows (21).

7. The buoyancy regulating system (100) according to claim 1, characterized in that: The mounting seat (10) is provided with an angular contact bearing (71), and the angular contact bearing (71) is sleeved on the first rod body (31); And / or the second end cover (23) is provided with a thrust bearing (72), and the thrust bearing (72) is sleeved on the driving rod (30).

8. The buoyancy regulating system (100) according to claim 1, characterized in that: Also includes: A displacement sensor (80), the displacement sensor (80) is mounted on the mounting seat (10) and is used to detect the displacement of the second end cover (23).

9. The buoyancy adjustment system (100) according to claim 8, characterized in that: The displacement sensor (80) is disposed through the mounting seat (10), and an orthographic projection of the displacement sensor (80) on the bellows (21) falls on the outside of the bellows (21).

10. The buoyancy regulating system (100) according to claim 1, characterized in that: The bellows assembly (20) further comprises an elastic member (25), wherein the elastic member (25) is located in the drainage space, and the elastic member (25) is elastically connected between the first end cover (22) and the second end cover (23).

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