A device for securing a buoyancy block to a submersible

Abstract

The utility model belongs to submersible technology field, specifically disclose a kind of fixing device of buoyancy block for submersible, including roof, the bottom surface of roof is uniformly distributed with multiple support rods along periphery, each support rod is adjustably connected with the push rod that is away from roof, push rod is fixedly connected with push plate, push plate movably connects with limit structure, limit structure is always attached to push plate movement, and limit structure can move in any direction perpendicular to the central axis of push rod, transmission assembly is equipped between any two opposite push rods, transmission assembly makes two opposite push rods synchronous movement or reverse movement, the bottom end of multiple support rods is detachably connected with elastic support component. The utility model is through being provided with push plate around buoyancy block, and through the effect of limit structure and transmission assembly, make the position of buoyancy block always and the gravity center of submersible on same vertical line, to ensure the stable operation of submersible.

Description

Technical Field

[0001] This utility model belongs to the field of submersible technology, specifically relating to a buoyancy block fixing device for submersibles. Background Technology

[0002] The buoyancy blocks of a submersible are the core components that ensure its levitation, surfacing, and descent underwater. Their installation quality directly affects the submersible's safety, stability, and operational efficiency. The installation position of the buoyancy blocks requires precise calculation to ensure that the submersible's center of gravity (G) and buoyancy center (B) are on the same vertical line, and that the buoyancy is slightly greater than the weight (achieving neutral buoyancy or slightly positive buoyancy). If the installation is misaligned, it may cause the submersible to tilt underwater, become difficult to control, or even capsize.

[0003] Chinese patent CN116605393B discloses a depth-adaptive buoyancy block fixing mechanism for submersibles. This mechanism maintains a stable fixed connection of the buoyancy blocks as the depth changes, preventing situations such as stretching, compression, or detachment of the buoyancy blocks that could seriously threaten the submersible's safety, thus ensuring its safety. While the ball-head structure connecting base and sliding cylinder used in this patent can adapt to deformation of the buoyancy blocks in different directions, they also cause displacement of the buoyancy blocks in different directions. Especially during submersible operation, this displacement inevitably causes the buoyancy center of the buoyancy block to be misaligned with the submersible's center of gravity, leading to unstable operation.

[0004] To address the issue that the buoyancy center may shift from the submersible's center of gravity after the buoyancy block is installed, thus affecting the submersible's stable operation, improvements are needed to the buoyancy block fixing structure to resolve the current technical problem. Utility Model Content

[0005] The purpose of this utility model is to provide a fixing device for a buoyancy block for a submersible. By setting push plates around the buoyancy block and through the action of the limiting structure and transmission components, the position of the buoyancy block is always on the same vertical line as the center of gravity of the submersible, thereby ensuring the stable operation of the submersible.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a fixing device for a buoyancy block for a submersible, comprising a top plate, wherein multiple support rods are evenly distributed around the bottom surface of the top plate, each support rod is adjustablely connected to a push rod away from the top plate, the push rod is fixedly connected to a push plate, the push plate is movably connected to a limiting structure, the limiting structure always abuts against the push plate and can move in any direction perpendicular to the central axis of the push rod, a transmission assembly is provided between any two opposing push rods, the transmission assembly causes the two opposing push rods to move synchronously in opposite directions, and the bottom ends of the multiple support rods are detachably connected to an elastic support assembly.

[0007] To better realize this utility model, the limiting structure is a hollow circular disc structure with a circular first through hole at the center. The diameter of the push rod is smaller than the diameter of the first through hole. The push plate is a circular plate structure that is movably embedded in the inner cavity of the limiting structure. The diameter of the push plate is larger than the diameter of the first through hole but smaller than the inner cavity diameter of the limiting structure.

[0008] To better realize this utility model, the transmission component includes a first bevel gear, the first bevel gear is provided with an internal thread through hole, the outer surface of the push rod is provided with an external thread adapted to the internal thread through hole, the support rod is provided with a second through hole coaxial with the internal thread through hole, and the first bevel gear is rotatably embedded in the second through hole;

[0009] The first bevel gear meshes with a second bevel gear, the second bevel gear is rotatably embedded in the support rod, the second bevel gear is fixedly connected to a first transmission rod, the first transmission rod is rotatably embedded in the support rod, and the top end of the first transmission rod is fixedly connected to a third bevel gear, the third bevel gear is rotatably embedded in the top plate;

[0010] The third bevel gear meshes with a fourth bevel gear, which is rotatably embedded in the top plate, and a second transmission rod is fixedly connected between the two opposing fourth bevel gears.

[0011] To better realize this utility model, the elastic support assembly includes multiple integrally formed U-shaped support frames. Both ends of the support frame are provided with slots for the support rod to be inserted. After the support rod is inserted into the slot, a threaded pin can be detachably connected to it.

[0012] To better realize this utility model, the elastic support assembly also includes a plurality of springs evenly distributed on the top surface of the support frame, and a support plate is fixedly connected to the top of the springs.

[0013] To better realize this utility model, a limiting rod is fixedly connected to the bottom of the support plate, the spring is sleeved on the outside of the limiting rod, and the limiting rod is movably inserted into the support frame.

[0014] Beneficial effects:

[0015] This invention ensures the stability of the submersible by using push plates around the buoyancy block and employing a limiting structure and transmission components to keep the buoyancy block's position aligned with the submersible's center of gravity in a straight line. When the buoyancy block deforms under the pressure of seawater, the limiting structure moves the push plates in the direction of deformation, causing the push rod to move as well. Since the push rod is threaded onto the first bevel gear, its movement inevitably rotates the first bevel gear. The first bevel gear then sequentially drives the second transmission rod to rotate via the second bevel gear, the first transmission rod, the third bevel gear, and the fourth bevel gear. The second transmission rod then drives the fourth bevel gear on the opposite side to rotate, which in turn drives the first bevel gear to rotate via the third bevel gear, the first transmission rod, and the second bevel gear on the opposite side. This causes the push rod on the opposite side to move the same distance in opposite directions, ensuring that the buoyancy block's center of gravity is always directly below the submersible's center of gravity. The vertical deformation is achieved by the elastic support components. If the buoyancy block contracts, the spring force will push the buoyancy block upward to the bottom of the top plate through the support plate. Conversely, if the buoyancy block expands, the spring will be pressed down through the support plate. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural view of the present invention from a downward perspective;

[0017] Figure 2 This is a three-dimensional structural view of the present invention from another downward perspective;

[0018] Figure 3 This is a top view of the present invention;

[0019] Figure 4 This is a cross-sectional view of the present invention (AA section).

[0020] Figure 5 This is an enlarged view of section B of this utility model.

[0021] In the diagram: 1. Top plate; 2. Support rod; 201. Second through hole; 3. Push rod; 301. External thread; 4. Push plate; 5. Limiting structure; 501. First through hole; 6. Transmission assembly; 601. First bevel gear; 602. Internal thread through hole; 603. Second bevel gear; 604. First transmission rod; 605. Third bevel gear; 606. Fourth bevel gear; 607. Second transmission rod; 7. Elastic support assembly; 701. Support frame; 702. Groove; 703. Pin; 704. Spring; 705. Support plate; 706. Limiting rod; 8. Buoyancy block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] like Figure 1 - Figure 5 As shown, a buoyancy block fixing device for a submersible includes a top plate 1. Multiple support rods 2 are evenly distributed around the bottom surface of the top plate 1. Each support rod 2 is adjustablely connected to a push rod 3 located away from the top plate 1. A push plate 4 is fixedly connected to the push rod 3. A limiting structure 5 is movably connected to the push plate 4. The limiting structure 5 is fixedly installed on the side of the buoyancy block 8. The limiting structure 5 is a hollow circular disc-shaped structure with a circular first through hole 501 at its center. The diameter of the push rod 3 is smaller than the diameter of the first through hole 501. The push plate 4 is a circular plate-shaped structure movably embedded in the inner cavity of the limiting structure 5. The diameter of the push plate 4 is larger than the diameter of the first through hole 501 but smaller than the inner cavity diameter of the limiting structure 5. Therefore, the limiting structure 5 always moves against the push plate 4 and can move in any direction perpendicular to the central axis of the push rod 3.

[0025] A transmission assembly 6 is installed between any two opposing push rods 3. The transmission assembly 6 enables the two opposing push rods 3 to move synchronously in opposite directions or in the opposite direction. The transmission assembly 6 includes a first bevel gear 601, which has an internal threaded through hole 602. The outer surface of the push rod 3 has an external thread 301 that fits into the internal threaded through hole 602. The support rod 2 has a second through hole 201 coaxial with the internal threaded through hole 602. The first bevel gear 601 is rotatably fitted into the second through hole 201.

[0026] The first bevel gear 601 meshes with the second bevel gear 603, the second bevel gear 603 is rotatably embedded in the support rod 2, the second bevel gear 603 is fixedly connected to the first transmission rod 604, the first transmission rod 604 is rotatably embedded in the support rod 2, the top end of the first transmission rod 604 is fixedly connected to the third bevel gear 605, the third bevel gear 605 is rotatably embedded in the top plate 1.

[0027] The third bevel gear 605 meshes with the fourth bevel gear 606, which is rotatably embedded in the top plate 1. A second transmission rod 607 is fixedly connected between the two opposing fourth bevel gears 606.

[0028] The bottom ends of multiple support rods 2 are detachably connected to elastic support components 7. The elastic support components 7 also include multiple springs 704 evenly distributed on the top surface of the support frame 701. The top ends of the springs 704 are fixedly connected to support plates 705. Buoyancy blocks 8 are placed on the top of the support plates 705. The bottom of the support plates 705 is fixedly connected to limit rods 706. The springs 704 are sleeved on the outside of the limit rods 706. The limit rods 706 are movably inserted into the support frame 701.

[0029] The working principle of this utility model can be summarized as follows:

[0030] When the buoyancy block 8 deforms under the pressure of seawater, the limiting structure 5 will drive the push plate 4 to move in the direction of deformation, and the push rod 3 will move together. Since the push rod 3 is threaded through the first bevel gear 601, the movement of the push rod 3 will inevitably drive the first bevel gear 601 to rotate. The first bevel gear 601 will drive the second transmission rod 607 to rotate in sequence through the second bevel gear 603, the first transmission rod 604, the third bevel gear 605 and the fourth bevel gear 606. The second transmission rod 607 will drive the fourth bevel gear 606 on the opposite side to rotate, and then drive the first bevel gear 601 to rotate in sequence through the third bevel gear 605, the first transmission rod 604 and the second bevel gear 603 on the opposite side. This will drive the push rod 3 on the opposite side to move the same distance in opposite directions as the push rod 3 on this side, so that the center of gravity of the buoyancy block 8 is always directly below the center of gravity of the submersible, thereby ensuring that the submersible can always move forward stably. The vertical deformation is achieved by the elastic support component 7. If the buoyancy block 8 contracts, under the elastic force of the spring 704, the buoyancy block 8 will be pushed upward to the bottom of the top plate 1 through the support plate 705. Conversely, if the buoyancy block 8 expands, the spring 704 will be pressed down through the support plate 705.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fixing device for a buoyancy block in a submersible, characterized in that, Includes a top plate (1), on which multiple support rods (2) are evenly distributed around the bottom surface. Each support rod (2) is adjustablely connected to a push rod (3) away from the top plate (1). The push rod (3) is fixedly connected to a push plate (4). The push plate (4) is movably connected to a limiting structure (5). The limiting structure (5) always moves against the push plate (4), and the limiting structure (5) can move in any direction perpendicular to the central axis of the push rod (3). A transmission assembly (6) is provided between any two opposing push rods (3). The transmission assembly (6) enables the two opposing push rods (3) to move synchronously towards each other or in opposite directions. The bottom ends of the multiple support rods (2) are detachably connected to an elastic support assembly (7).

2. The fixing device for a buoyancy block for a submersible according to claim 1, characterized in that, The limiting structure (5) is a hollow circular disc structure with a circular first through hole (501) at the center. The diameter of the push rod (3) is smaller than the diameter of the first through hole (501). The push plate (4) is a circular plate structure that is movably embedded in the cavity of the limiting structure (5). The diameter of the push plate (4) is larger than the diameter of the first through hole (501) but smaller than the diameter of the cavity of the limiting structure (5).

3. The fixing device for a buoyancy block for a submersible according to claim 1, characterized in that, The transmission assembly (6) includes a first bevel gear (601), the first bevel gear (601) is provided with an internal thread through hole (602), the outer surface of the push rod (3) is provided with an external thread (301) adapted to the internal thread through hole (602), the support rod (2) is provided with a second through hole (201) coaxial with the internal thread through hole (602), and the first bevel gear (601) is rotatably embedded in the second through hole (201); The first bevel gear (601) meshes with the second bevel gear (603), the second bevel gear (603) is rotatably embedded in the support rod (2), the second bevel gear (603) is fixedly connected to the first transmission rod (604), the first transmission rod (604) is rotatably embedded in the support rod (2), the top end of the first transmission rod (604) is fixedly connected to the third bevel gear (605), and the third bevel gear (605) is rotatably embedded in the top plate (1); The third bevel gear (605) meshes with the fourth bevel gear (606), the fourth bevel gear (606) is rotatably embedded in the top plate (1), and a second transmission rod (607) is fixedly connected between the two opposing fourth bevel gears (606).

4. The fixing device for a buoyancy block for a submersible according to claim 1, characterized in that, The elastic support assembly (7) includes multiple integrally formed U-shaped support frames (701). Both ends of the support frame (701) are provided with slots (702) for the support rod (2) to be inserted. After the support rod (2) is inserted into the slot (702), a threaded pin (703) can be detachably inserted.

5. The fixing device for a buoyancy block for a submersible according to claim 4, characterized in that, The elastic support assembly (7) also includes a plurality of springs (704) evenly distributed on the top surface of the support frame (701), and a support plate (705) is fixedly connected to the top of the springs (704).

6. The fixing device for a buoyancy block for a submersible according to claim 5, characterized in that, The bottom of the support plate (705) is fixedly connected to a limiting rod (706), the spring (704) is sleeved on the outside of the limiting rod (706), and the limiting rod (706) is movably inserted into the support frame (701).

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