An automatic deployment type fishing buoy device for recovery of a submersible

Abstract

The utility model belongs to the field of ocean technology discloses a kind of automatic deployment type salvage rope loop device for submersible recovery, including support, prism float, salvage cable, connecting cable and release mechanism.The utility model has the following advantages:the improvement of salvage efficiency:change the line finding problem into the ring problem, provide large salvage target of diameter several meters for hook, only need to throw hook into coil, and all can salvage salvage rope.Full-automatic pure mechanical work: the whole deployment process does not need power, rely on buoyancy and preset mechanical mechanism to complete automatically, avoid the malfunction that may appear in long-term work of electronic component under water, long service life, high reliability.Triggering opportunity is accurate: trigger in relatively shallow depth using water pressure change, avoid misdeployment in deep water or water surface, ensure that device plays a role in suitable salvage depth and opportunity.Structure is ingenious, and deployment is reliable: three-prism-shaped float utilizes fluid power to actively assist deployment, ensure that annular can be formed under various sea current environments.

Description

Technical Field

[0001] This utility model belongs to the field of marine technology and relates to an automatic deployable retrieval rope device for recovering underwater moorings. Background Technology

[0002] Submarine mooring systems are crucial platforms for long-term, continuous ocean profiling observations, widely used in marine environmental monitoring, marine geological surveys, marine resource exploration, and military reconnaissance. A mooring mooring typically consists of a float, mooring equipment, and sensors, enabling it to collect ocean data at a predetermined depth for extended periods. After completing its scheduled observation mission, the mooring mooring moored via deck commands or a timer, rising to the surface on its own float for retrieval by a working vessel. Therefore, successful mooring mooring retrieval is one of the most critical and challenging aspects of the entire observation mission.

[0003] However, existing underwater mooring recovery processes face significant challenges: the main buoy has a limited volume, the retrieval rope on top is short and has a small retrieval range, and it may become covered by marine organisms, causing the retrieval rope to sink, further increasing the difficulty of finding and retrieving it. Operating vessels often need to make multiple attempts to hook the retrieval rope with the grappling hook; the entire process is time-consuming and labor-intensive, and prone to failure in high sea states, leading to damage to expensive mooring equipment.

[0004] Currently, while some technologies attempt to improve visibility by adding buoys or beacons, they have not effectively solved the core problem of "how to provide a structure that is easy to retrieve and does not affect sensor operation." Therefore, there is an urgent need for a device that can automatically form a large-sized, highly visible, and easily retrieved structure after the buoy rises to the surface.

[0005] In summary, this utility model proposes an automatic deployable retrieval rope loop device for underwater buoy recovery. Utility Model Content

[0006] This invention provides an automatically deployable retrieval rope loop device for underwater mooring recovery. The device is automatically triggered during the mooring process as it rises to near the surface, rapidly deploying into a large annular buoyancy structure that surrounds the main buoy of the mooring, providing a large target for the retrieval hook, thereby greatly reducing the difficulty of retrieval and increasing the success rate of recovery.

[0007] The technical solution of this utility model:

[0008] An automatic deployable retrieval rope device for recovering underwater buoys includes a support 2, a prism float 3, a retrieval cable 4, a connecting cable 5, and a release mechanism 6.

[0009] The support 2 is made of stainless steel and is generally ring-shaped, with a diameter not greater than that of the main float 1 of the mooring. The support 2 includes a support body 2-1 and a connecting rod 2-2. The support body 2-1 is a ring structure with multiple steel plates welded to its outer side. The steel plates are used to place the prism float 3 and the release mechanism 6. The steel plates have holes so that the cable can pass through. The connecting rod 2-2 is connected to the inner side of the ring structure. The support 2 is fixed to the main float 1 of the mooring through the connecting rod 2-2. The connecting rod 2-2 is a steel bar with holes at both ends so that it can be used on main floats of different sizes.

[0010] The prism float 3 is a right-angled triangular prism filled with lightweight, pressure-resistant buoyancy material, and its overall net buoyancy is positive. This design allows the water flow to generate an outward thrust during the ascent of the prism float 3, actively assisting the prism float 3 to move outward. The prism float 3 includes a float body 3-1, a locking plate 3-2, and a float cover plate 3-3. The float body 3-1 and the float cover plate 3-3 constitute the main structure of the prism float 3, and the opening and closing are controlled by the float cover plate 3-3. The float body 3-1 is used to house the salvage cable 4 and the connecting cable 5. Cable outlet holes are opened on both sides and the bottom of the float body 3-1. The locking plate 3-2 is installed at the front end of the prism float 3 to lock the prism float 3.

[0011] The salvage cable 4 and the connecting cable 5 are both high-strength buoyancy cables, placed inside the prism float 3. One end is fixed inside the prism float 3, and the other end is connected through the cable outlet hole to avoid the cables from getting tangled and knotted in the standby state.

[0012] The prism float 3 can be placed in 4-8 units depending on the actual situation. The prism float 3 is connected by the salvage cable 4. In the retracted state, it is fixed to the steel plate of the support 2 and placed in a ring. It is connected to the support 2 by the connecting cable 5. This structure ensures that once released, the prism float 3 can quickly rise with its positive buoyancy. The salvage cable 4 and the connecting cable 5 are pulled out from the inside of the prism float 3 and naturally unfold into a ring.

[0013] The release mechanism 6 is used to lock the position of the prism float 3 and release the constraint on the prism float 3 at a predetermined water depth. The locking piece 3-2 at the front end of the prism float 3 is inserted into the release mechanism 6 for fixation.

[0014] The release mechanism 6 is made entirely of stainless steel and its quantity corresponds to that of the prism float 3. It mainly consists of a release housing 6-1, a release cover 6-2, a pin 6-3, a water pressure spring 6-4, a limit lever 6-5, a base 6-6, a limit post 6-7, and a locking switch 6-8.

[0015] The release housing 6-1 and the release cover 6-2 are combined to form a cuboid housing, which serves as the housing of the release mechanism 6. The release housing 6-1 has a notch for the locking piece 3-2 of the prism float 3 to be inserted. Two partitions are provided on two opposite sides of the housing, which divide the internal space into a left space, a middle space and a right space, while restricting the pin 6-3 and the base 6-6 to move only up and down. An elastic limiting piece 6-5 is provided at the same position on the lower part of each partition, so that the base 6-6 does not return to the lower layer after passing upward. A rigid limiting post 6-7 is provided at the upper part of the partition to restrict the position of the pin 6-3.

[0016] The pin 6-3 has a U-shaped structure, with its crossbar being a cylinder of the same width as the central space. The cylinder has a hole for connecting to the water pressure spring 6-4. The cylinder has baffles at both ends, which are locked onto the two partitions of the outer shell to ensure that the pin 6-3 can only move vertically. The vertical bars on both sides of the pin 6-3 are of equal length. One side is the pin rod with a slanted end, which is used to block the locking switch 6-8, and the other side is used to balance the gravity.

[0017] The water pressure spring 6-4 is a cylindrical tank, with a seal between the upper shell 6-4a and the lower shell 6-4b, and relative movement between them; the spring 6-4c is installed inside the water pressure spring 6-4, and the outer ends of the upper shell 6-4a and the lower shell 6-4b have screw holes. The upper shell 6-4a is connected to the crossbar of the pin 6-3, and the lower shell 6-4b is connected to the base 6-6.

[0018] The base 6-6 is a cylindrical structure with a length equal to the width of the central space. The cylinder has holes for connecting to the lower housing 6-4b of the water pressure spring 6-4. The base 6-6 has baffles at both ends for locking onto the two partitions of the outer shell to ensure that the base 6-6 can only move vertically.

[0019] The locking switch 6-8 includes a locking buckle 6-8a and a storage spring 6-8b, which are installed above the notch of the release housing 6-1. During installation, the storage spring 6-8b is charged, the upper end of the locking buckle 6-8a rests against the pin 6-3, and the lower end of the locking buckle 6-8a is inserted into the square hole of the locking piece 3-2.

[0020] The beneficial effects of this utility model are:

[0021] (1) Improved salvage efficiency: The problem of "finding the line" is transformed into the problem of "ringing", providing a large salvage target with a diameter of several meters for the hook. As long as the hook is thrown into the coil, the salvage rope can be successfully retrieved, with a very high success rate.

[0022] (2) Fully automatic pure mechanical operation: The entire deployment process does not require electricity and is completed automatically by relying on buoyancy and pre-set mechanical mechanisms, avoiding the possible failures of electronic components working underwater for a long time, with long service life and high reliability.

[0023] (3) Precise triggering timing: It utilizes water pressure changes to trigger at shallower depths, avoiding accidental deployment in deep water or on the surface, ensuring that the device functions at the most suitable depth and timing for salvage.

[0024] (4) Ingenious structure and reliable deployment: The triangular prism-shaped float design utilizes hydrodynamic active assistance for deployment, ensuring that a complete ring can be formed in various ocean current environments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the device described in this utility model in its retracted state on the underwater glider;

[0026] Figure 2 This is a schematic diagram of the device described in this utility model in its deployed state on a underwater glider;

[0027] Figure 3 The diagram shows the support structure of the present invention; wherein, (a) is an overall view of the support, (b) is a schematic diagram of the cooperation between the support and the main float, (c) is a schematic diagram of the release mechanism installation, and (d) is a schematic diagram of a partial installation.

[0028] Figure 4 This is a schematic diagram of the prism float structure of the present invention; wherein, (a) is an overall view of the prism float, (b) is a perspective view of the prism float, (c) is a bottom view of the prism float, (d) is a bottom view of the prism float without a cover, (e) is a schematic diagram of the cable installation of the prism float, and (f) is a schematic diagram of the cooperation between the prism float and the release mechanism.

[0029] Figure 5 The diagram shows the structure of the release mechanism of this utility model; wherein, (a) is an overall view of the release mechanism, (b) is a cross-sectional view of the release mechanism, (c) is a schematic diagram of the pin structure, (d) is a schematic diagram of the water pressure spring structure, (e) is a schematic diagram of the base structure, (f) is a schematic diagram of the water pressure trigger module, and (g) is a schematic diagram of the locking switch structure.

[0030] Figure 6 This is a schematic diagram of the working principle of this utility model; wherein, (a) is a schematic diagram of the initial state of the water surface, (b) is a schematic diagram of the deployment and sinking state, (c) is a schematic diagram of the seabed standby state, and (d) is a schematic diagram of the release state.

[0031] In the diagram: 1-Main buoy of the underwater mooring; 2-Support, 2-1-Support body, 2-2-Connecting rod; 3-Prismatic buoy, 3-1-Main body of the buoy, 3-2-Locking plate, 3-3-Buoy cover plate; 4-Retrieval cable; 5-Connecting cable; 6-Release mechanism, 6-1-Release housing, 6-2-Release cover plate, 6-3-Pin, 6-4-Hydraulic spring, 6-4a-Upper shell, 6-4b-Lower shell, 6-4c-Spring, 6-5-Limiting lever, 6-6-Bottom support, 6-7-Limiting post, 6-8-Locking switch, 6-8a-Locking buckle, 6-8b-Storage spring. Detailed Implementation

[0032] The specific embodiments of this utility model are further described below with reference to the accompanying drawings and technical solutions.

[0033] like Figures 1-5 As shown, an automatic deployable retrieval rope device for recovering underwater buoys is provided, including a support 2, a prism float 3, a retrieval cable 4, a connecting cable 5, and a release mechanism 6.

[0034] During the deployment of the mooring vessel and underwater operations, the prism-shaped float 3 is tightly retracted and placed on the support 2, fixed in an appropriate position on the main float 1 of the mooring vessel. At this time, the salvage cable 4 and the connecting cable 5 are placed inside the prism-shaped float 3, and the release mechanism 6 tightly locks the prism-shaped float 3.

[0035] The release mechanism 6 utilizes a water pressure spring 6-4 to sense external water pressure. When the buoy is lowered, the water pressure spring 6-4 stores and pre-compresses. When the buoy rises to a point where the water pressure is below a predetermined threshold (e.g., corresponding to a depth of 100 meters), the water pressure spring 6-4 pushes the pin 6-3 to move, driving the locking switch 6-8 to disengage from the locking hole of the locking plate 3-2, thus completing the release. This design cleverly utilizes the depth change during the buoy retrieval process as a trigger signal; it is purely mechanical and absolutely reliable.

[0036] The release mechanism operates as follows:

[0037] When the buoy is on the water surface and not yet deployed, the release mechanism 6 is in the following state: Figure 6 As shown in (a), the base 6-6 is located at the bottom of the release mechanism, and the locking plate 3-2 is locked by the locking switch 6-8; when the buoy is deployed, the state of the release mechanism 6 is as follows. Figure 6As shown in (b)-(c), when the main buoy 1 submerges, the water pressure spring 6-4 is compressed inward by water pressure. Because the upper part of the water pressure spring 6-4 is blocked by the limiting post 6-7, the bottom of the water pressure spring 6-4 rises, and the bottom support 6-6 connected to it also rises. When the bottom support 6-6 reaches the position of the limiting lever 6-5, due to the elasticity of the lever, the bottom support 6-6 passes smoothly and continues to rise. After the mooring is deployed and enters the working state, the main buoy of the mooring is affected by ocean currents, internal waves, etc., and floats up and down at the predetermined depth, releasing... In mechanism 6, the water pressure spring 6-4 extends and retracts with depth. When the main buoy rises close to the designed release depth, the water pressure spring 6-4 extends. Due to the restriction of the limit plate 6-5, the bottom support 6-6 cannot pass downwards. Therefore, the water pressure spring 6-4 pushes the pin 6-3 upwards. Since the designed water depth has not been reached, the locking switch 6-8 remains against the pin, and the release mechanism does not release. When the buoy completes its task and rises to the designed water depth (e.g., 100 meters) where the water pressure is significantly reduced, the release mechanism 6 begins to operate. Figure 6 As shown in (d), at this time, the pin 6-3 is lifted, the locking switch 6-8 is unobstructed, and it rebounds downward under the action of the storage spring 6-8b, thereby driving the lower end of the locking buckle 6-8a to move upward, so that it completely disengages from the locking piece 3-2 of the prism float 3. At this time, it moves outward under the action of water flow, releasing the mechanism, thus completing the overall deployment action.

[0038] Once the lock is released, the prism floats 3 with triangular cross sections are subjected to the water flow, generating outward hydrodynamic force. Each prism float 3 moves outward and upward, thereby driving the salvage cable 4 and connecting cable 5 to be pulled out. In a short time, they unfold into a stable large ring rope structure, which surrounds the main float 1 of the underwater mooring.

[0039] The recovery vessel simply needs to aim the grappling hook at this ring area to easily snag the entire extension rope loop, thus successfully recovering the entire mooring system onto the vessel.

[0040] This invention cleverly solves the problem of underwater buoy recovery through a purely mechanical method. It has a simple structure, low cost, and huge benefits.

Claims

1. An automatic deployable retrieval rope loop device for recovering underwater buoys, characterized in that, The automatic deployable salvage rope device includes a support (2), a prism float (3), a salvage cable (4), a connecting cable (5), and a release mechanism (6). The bracket (2) is made of stainless steel and is generally ring-shaped. Its diameter is not greater than the diameter of the main float (1) of the underwater buoy. The bracket (2) includes a bracket body (2-1) and a connecting rod (2-2). The bracket body (2-1) is a ring structure with multiple steel plates welded to its outer side. The steel plates are used to place the prism float (3) and the release mechanism (6). The steel plates have holes for the cable to pass through. The connecting rod (2-2) is connected to the inner side of the ring structure. The bracket (2) is fixed to the main float (1) of the underwater buoy through the connecting rod (2-2). The prism float (3) is a right-angled triangular prism, filled with lightweight pressure-resistant buoyancy material, and its overall net buoyancy is positive. The prism float (3) includes a float body (3-1), a locking plate (3-2), and a float cover plate (3-3). The float body (3-1) and the float cover plate (3-3) constitute the main structure of the prism float (3), and the opening and closing are controlled by the float cover plate (3-3). The float body (3-1) is used to place the salvage cable (4) and the connecting cable (5). The float body (3-1) has cable outlet holes on both sides and at the bottom. The locking plate (3-2) is installed at the front end of the prism float (3) to lock the prism float (3). The salvage cable (4) and the connecting cable (5) are placed inside the prism float (3), with one end fixed inside the prism float (3) and the other end connected through the cable outlet hole; The prism floats (3) are connected by salvage cables (4), and are fixed in a ring on the steel plate of the support (2) in the retracted state, and are connected to the support (2) by connecting cables (5). The release mechanism (6) is used to lock the position of the prism float (3) and release the constraint on the prism float (3) at a predetermined water depth; the locking piece (3-2) at the front end of the prism float (3) is inserted into the release mechanism (6) for fixation.

2. The automatic unfolding retrieval rope loop device according to claim 1, characterized in that, The number of release mechanisms (6) corresponds to the number of prism floats (3), and they are mainly composed of releaser housing (6-1), releaser cover plate (6-2), pin (6-3), water pressure spring (6-4), limit lever (6-5), base (6-6), limit post (6-7) and locking switch (6-8); The release housing (6-1) and the release cover plate (6-2) together form the housing of the release mechanism (6), which is a cuboid. The release housing (6-1) has a notch for the locking piece (3-2) of the prism float (3) to be inserted. Two partitions are provided on the two opposite sides of the housing of the release mechanism (6), which divide the internal space into the left space, the middle space and the right space, while restricting the pin (6-3) and the base (6-6) to only move up and down. Each partition is provided with an elastic limiting piece (6-5) at the same position below, so that the base (6-6) does not return to the elastic limiting piece (6-5) after passing upward. There is a rigid limiting post (6-7) at the upper position of the partition to restrict the position of the pin (6-3). The pin (6-3) has a U-shaped structure, with its crossbar being a cylinder of the same width as the central space. The cylinder has a hole for connecting to the water pressure spring (6-4). The cylinder has baffles at both ends, which are locked onto the two partitions of the outer shell of the release mechanism (6) to ensure that the pin (6-3) can only move vertically. The vertical bars on both sides of the pin (6-3) are of equal length. One side is the pin rod with a beveled end for blocking the locking switch (6-8), and the other side is used to balance the gravity. The water pressure spring (6-4) is a cylindrical tank with a sealed upper shell (6-4a) and a lower shell (6-4b) that can move relative to each other. The spring (6-4c) is installed inside the water pressure spring (6-4). Both the upper shell (6-4a) and the lower shell (6-4b) have screw holes at their outer ends. The upper shell (6-4a) is connected to the crossbar of the pin (6-3), and the lower shell (6-4b) is connected to the base (6-6). The base (6-6) is a cylindrical structure with a length equal to the width of the central space. It has a hole for connecting to the lower housing (6-4b) of the water pressure spring (6-4). The base (6-6) has baffles at both ends for locking onto the two partitions of the outer shell to ensure that the base (6-6) can only move vertically. The locking switch (6-8) includes a locking buckle (6-8a) and a storage spring (6-8b), which are installed above the notch of the release housing (6-1). When installed, the storage spring (6-8b) is charged, the upper end of the locking buckle (6-8a) rests against the pin (6-3), and the lower end of the locking buckle (6-8a) is inserted into the square hole of the locking piece (3-2).

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