Load rejection mechanism and load rejection method for deep sea buoyancy platform

Abstract

The invention provides a load rejection mechanism and method for a deep sea buoyancy platform. The load rejection mechanism comprises a load, a fixed frame structure, an electric explosion bolt, an electric explosion bolt pressing rod, a safety pin, a lever structure and a lever connecting device. A lever connecting device is fixed on the load; the lever structure is connected with the fixed frame structure through a rotating shaft, a first end is limited by a lever connecting device, and a second end penetrates out of the lower part of the fixed frame structure and is pressed and limited by an electric explosion bolt pressing rod and a safety pin on the fixed frame structure; limiting of the second end of the lever structure is relieved by taking out the safety pin or detonating the electric explosion bolt, the lever structure is turned over, the first end of the lever structure is separated from the lever connecting device, and load rejection is completed. Compared with a single triggering mode of a traditional load rejection mechanism, the load rejection mechanism can be switched between autonomous triggering starting and manual triggering starting at any time, the switching mode is simple and efficient, and the load rejection mechanism adapts to different environment working conditions and equipment requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of underwater robots, and in particular relates to a deep-sea buoyancy platform jettisoning mechanism and a jettisoning method. Background Art

[0002] As a key technical equipment for marine scientific exploration and development, underwater buoyancy platforms have attracted extensive attention from countries around the world due to their unique advantages and broad application prospects. With the gradual development of the marine industry, there is huge room for growth in deep-sea exploration operations. Therefore, the design and development of the buoyancy platform jettisoning structure, as an important driving unit for controlling the floating action of underwater submersibles before or after operations, has become particularly important.

[0003] The main uses of the deep-sea buoyancy platform jettisoning mechanism include jettisoning underwater equipment to float in an emergency, and serving as the heave and sinking floating of deep-sea equipment. This can solve the problem of excessive energy consumption when relying solely on thrusters or buoyancy engines to achieve heave and sink motion. In deep-sea exploration operations, due to the complex environment and high pressure, the design of the deep-sea buoyancy platform jettisoning mechanism needs to take into account various extreme conditions to ensure that it can work stably and reliably.

[0004] In addition, common driving modes of deep-sea buoyancy platform dumping mechanisms include electromagnetic drive, motor drive, hydraulic drive, fusible metal drive, electric explosive bolt drive, and mechanical structure (such as pure mechanical dumping mechanisms based on fixed depth or timing triggering and mechanical structures operated manually, etc.). The deep-sea dumping mechanism has a single driving mode, low reliability, and a risk of dumping failure, and cannot switch between automatic and manual triggering modes.

[0005] Therefore, the research and improvement of the deep-sea buoyancy platform jettisoning mechanism still requires continuous exploration and innovation to meet the needs of deep-sea exploration operations. Summary of the invention

[0006] In order to overcome the deficiencies in the prior art, the inventors have conducted intensive research and provided a deep-sea buoyancy platform jettisoning mechanism and method, which solve the problems of a single driving mode of the deep-sea jettisoning mechanism, low mechanism reliability, the risk of jettisoning failure, and the inability to switch between automatic and manual triggering modes.

[0007] The technical solution provided by the present invention is as follows:

[0008] In a first aspect, a deep-sea buoyancy platform jettisoning mechanism comprises: a load, a fixed frame structure, an electric explosion bolt, an electric explosion bolt pressure rod, a safety pin, a lever structure and a lever connecting device;

[0009] A lever connecting device is fixed on the load, and the first end of the lever structure is limited by the lever connecting device; the lever structure is connected to the fixed frame structure by a rotating shaft passing through the lever structure; a safety pin is installed on the upper surface of the fixed frame structure through a safety pin mounting seat, and an electric explosion bolt pressure rod is installed through a pressure rod mounting seat, the pressure rod mounting seat and the fixed frame structure are fixedly connected by the electric explosion bolt, the second end of the lever structure passes through the bottom of the fixed frame structure, and is limited by the electric explosion bolt pressure rod and the safety pin on the fixed frame structure; by taking out the safety pin or detonating the electric explosion bolt, the limitation on the second end of the lever structure is released, the lever structure is flipped, the first end of the lever structure is separated from the lever connecting device, and the load is dumped.

[0010] In a second aspect, a deep-sea buoyancy platform jettisoning method adopts the deep-sea buoyancy platform jettisoning mechanism of the first aspect, comprising:

[0011] Before the buoyant platform goes into the sea, the safety pin is pulled out; when it is necessary to dump the load, the electric blasting bolts in the sea receive the command and explode, the electric blasting bolt pressure rod is separated from the fixed frame structure, and the constraint on the second end of the lever structure is cancelled; under the action of gravity, the load flips the lever structure through the lever connecting device, the lever structure rotates around the rotating axis, the second end is tilted to make the first end descend and separate from the lever connecting device, the lever structure and the fixed frame structure are separated from the buoyant platform and the load, and the load dumping process is completed.

[0012] In a third aspect, a deep-sea buoyancy platform jettisoning method adopts the deep-sea buoyancy platform jettisoning mechanism of the first aspect, comprising:

[0013] Before the buoyancy platform goes into the sea, the electric explosion bolt pressure rod is removed; when it is necessary to dump the load, the safety pin is pulled out in the sea to cancel the constraint on the second end of the lever structure; under the action of gravity, the load flips the lever structure through the lever connecting device, the lever structure rotates around the rotating axis, the second end is tilted to make the first end descend and separate from the lever connecting device, the lever structure and the fixed frame structure are separated from the buoyancy platform and the load, and the load dumping process is completed.

[0014] In a fourth aspect, a deep-sea buoyancy platform jettisoning method adopts the deep-sea buoyancy platform jettisoning mechanism of the first aspect, comprising:

[0015] Before the buoyancy platform goes to sea, the safety pin and the electric explosion bolt pressure rod are not removed in advance; when it is necessary to dump the load, the safety pin is pulled out in the sea and the electric explosion bolt is detonated to cancel the constraint on the second end of the lever structure; under the action of gravity, the load flips the lever structure through the lever connecting device, the lever structure rotates around the rotating axis, the second end tilts up to make the first end drop and separate from the lever connecting device, the lever structure and the fixed frame structure are separated from the buoyancy platform and the load, and the load dumping process is completed.

[0016] A deep-sea buoyancy platform jettisoning mechanism and jettisoning method provided by the present invention has the following beneficial effects:

[0017] (1) The present invention provides a deep-sea buoyancy platform dumping mechanism, which is composed of a combination of mechanical structure drive and electric explosion bolt drive. The triggering mode and sequence are flexible and variable. A single triggering mode can be used: mechanical structure drive or electric explosion bolt drive; or all triggering modes can be used: mechanical structure and electric explosion bolt drive together, and the triggering sequence can also be adjusted. Compared with the single triggering mode of the traditional dumping mechanism, it can switch between autonomous triggering and manual triggering at any time. The switching mode is simple and efficient, and can adapt to different environmental conditions and equipment requirements. The hybrid driving mode greatly improves the structural reliability, ensuring that the dumping mechanism can be triggered and started normally and stably under different working conditions.

[0018] (2) The present invention provides a method for dumping a deep-sea buoyancy platform, which can complete the dumping of a large tonnage load through a safety pin and a small equivalent electric explosive bolt. The dumping process is safe and reliable, avoiding damage to surrounding facilities and mechanisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the jettisoning mechanism of the deep-sea buoyancy platform;

[0020] Figure 2 It is a schematic diagram of the partial structure of the jettisoning mechanism of the deep-sea buoyancy platform;

[0021] Figure 3 This is a schematic diagram of the partial structure of the deep-sea buoyancy platform's jettisoning mechanism. DETAILED DESCRIPTION

[0022] The following detailed description of the present invention will make the features and advantages of the present invention more clear and explicit.

[0023] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0024] In order to solve the problems that the traditional deep-sea dumping mechanism has a single driving mode, low reliability, risk of dumping failure, and cannot switch between automatic and manual triggering modes, the present invention provides a deep-sea buoyancy platform dumping mechanism, such as Figure 1 , Figure 2 and Figure 3As shown, it includes a load 1, a fixed frame structure 2, an electric explosion bolt 3, an electric explosion bolt pressure rod 4, a safety pin 5, a lever structure 6 and a lever connecting device 7; a lever connecting device 7 is fixed on the load 1, and the first end of the lever structure 6 is limited by the lever connecting device 7; the lever structure 6 is connected to the fixed frame structure 2 through a rotating shaft passing through the lever structure 6, and the fixed frame structure 2 serves as a transfer mechanism between the jettisoning mechanism and the buoyancy platform, and a safety pin 5 is installed on its upper surface through a safety pin mounting seat, and an electric explosion bolt pressure rod 4 is installed through a pressure rod mounting seat, and the pressure rod mounting seat is fixedly connected to the fixed frame structure 2 through the electric explosion bolt 3, and the second end of the lever structure 6 passes through the bottom of the fixed frame structure 2, and is limited by the electric explosion bolt pressure rod 4 and the safety pin 5 on the fixed frame structure 2.

[0025] The load-releasing mechanism integrates the dual redundant driving modes of mechanical structure drive and electric explosion bolt drive. The mechanical structure drive is manually triggered and started by the safety pin, and the electric explosion bolt drive is autonomously triggered and started by the electric explosion bolt. (1) When the electric explosion bolt is autonomously triggered, the safety pin 5 is pulled out before the buoyant platform goes to sea; the electric explosion bolt 3 in the sea receives the command and explodes, losing the ability to restrain the electric explosion bolt pressure rod 4; the electric explosion bolt pressure rod 4 is separated from the fixed frame structure 2 (load-releasing mechanism), and the load 1 flips the lever structure 6 through the lever connection device 7 under the action of gravity. The lever structure 6 rotates around the rotating shaft, and the second end tilts up to make the first end drop and separate from the lever connection device 7. The lever structure 6 and the fixed frame structure 2 are separated from the buoyant platform and the load 1, completing the load-releasing process. (2) When the mechanical structure is manually triggered, the electric explosion bolt pressure rod 4 is removed before the buoyant platform goes to sea, and when load-releasing is required, the safety pin 5 is pulled out to complete the load-releasing process. (3) When the electric explosive bolt autonomous triggering mode is combined with the mechanical structure manual triggering mode, before the buoyancy platform goes into the sea, the safety pin 5 and the electric explosive bolt pressure rod 4 are not removed in advance. The sea manipulator pulls out the safety pin, and the electric explosive bolt is activated by the signal to complete the load dumping process.

[0026] In the present invention, the fixed frame structure 2 includes an upper adapter plate and side adapter plates on both sides thereof, the side adapter plates are rotatably connected to the lever structure 6 through a rotating shaft, the upper adapter plate is fixed with an electric explosion bolt pressure rod 4 and a safety pin 5, a longitudinal through groove is provided on the upper adapter plate, the second end of the lever structure 6 passes through the longitudinal through groove from below, extends to the surface of the upper adapter plate, and is limited by the electric explosion bolt pressure rod 4 and the safety pin 5 that cross the second end of the lever structure.

[0027] In the present invention, two sets of safety pin mounting seats are installed on the fixed frame structure 2, and the safety pin mounting seats are located on both sides of the second end of the lever structure. The two ends of the safety pin 5 are respectively fixed on the safety pin mounting seats, spanning the second end of the lever structure and implementing downward limit.

[0028] In the present invention, two groups of pressure rod mounting seats are installed on the fixed frame structure 2, and the pressure rod mounting seats are located on both sides of the second end of the lever structure. The two ends of the electric explosion bolt pressure rod 4 are respectively fixed on the pressure rod mounting seats, spanning the second end of the lever structure and implementing downward pressure limiting.

[0029] In the present invention, the rotating shaft on the lever structure 6 is close to the first end of the lever structure 6 and far away from the second end of the lever structure 6 .

[0030] In the present invention, the lever connecting device 7 includes a base plate 71, a support 72 and a rotating pressure shaft 73. The base plate 71 is fixed on the load 1, and the two support pillars 72 are fixed on the base plate 71. The two ends of the rotating pressure shaft 73 are rotatably mounted on the two support pillars 72. The first end of the lever structure 6 is placed under the rotating pressure shaft 73. When flipping, it slips out from under the rotating pressure shaft, and the load is thrown away after being freed from the constraint.

[0031] Correspondingly, the present invention also provides a deep-sea buoyancy platform dumping method, which is implemented by using the above-mentioned deep-sea buoyancy platform dumping device. When dumping, a single triggering mode can be used: mechanical structure drive or electric explosion bolt drive; or all triggering modes can be used: mechanical structure and electric explosion bolt drive together, and the triggering sequence can also be adjusted. The triggering sequence is flexible and variable, and can be switched between mechanical structure drive or electric explosion bolt drive at any time, and the dumping process is safe and reliable.

[0032] The present invention has been described in detail above in conjunction with specific implementations and exemplary examples, but these descriptions cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, a variety of equivalent substitutions, modifications or improvements may be made to the technical solution of the present invention and its implementation methods, all of which fall within the scope of the present invention. The scope of protection of the present invention shall be subject to the attached claims.

[0033] The contents not described in detail in the specification of the present invention belong to the common knowledge of those skilled in the art.

Claims

1. A deep-sea buoyancy platform jettisoning mechanism, characterized in that: It comprises a load (1), a fixed frame structure (2), an electric explosion bolt (3), an electric explosion bolt pressure rod (4), a safety pin (5), a lever structure (6) and a lever connecting device (7); A lever connecting device (7) is fixed on the load (1), and the first end of the lever structure (6) is limited by the lever connecting device (7); the lever structure (6) is connected to the fixed frame structure (2) by a rotating shaft passing through the lever structure (6); a safety pin (5) is installed on the upper surface of the fixed frame structure (2) through a safety pin mounting seat, and an electric blasting bolt pressure rod (4) is installed through a pressure rod mounting seat, and the pressure rod mounting seat is fixedly connected to the fixed frame structure (2) through the electric blasting bolt (3); the second end of the lever structure (6) passes through the bottom of the fixed frame structure (2) and is limited by the electric blasting bolt pressure rod (4) and the safety pin (5) on the fixed frame structure (2); by removing the safety pin (5) or detonating the electric blasting bolt (3), the limit on the second end of the lever structure is released, the lever structure (6) is turned over, and the first end of the lever structure (6) is separated from the lever connecting device (7), completing the load dumping.

2. The deep sea buoyancy platform jettisoning mechanism according to claim 1, characterized in that: The fixed frame structure (2) comprises an upper adapter plate and side adapter plates on both sides thereof, the side adapter plates being rotatably connected to the lever structure (6) via a rotating shaft, the upper adapter plate being fixed with an electric blasting bolt pressure rod (4) and a safety pin (5), a longitudinal through slot being provided on the upper adapter plate, the second end of the lever structure (6) passing through the longitudinal through slot from below and extending to the surface of the upper adapter plate, and being pressed down to limit position by the electric blasting bolt pressure rod (4) and the safety pin (5) crossing the second end of the lever structure.

3. The deep sea buoyancy platform jettisoning mechanism according to claim 1, characterized in that: Two groups of safety pin mounting seats are installed on the fixed frame structure (2), and the safety pin mounting seats are located on both sides of the second end of the lever structure. The two ends of the safety pin (5) are respectively fixed on the safety pin mounting seats, straddling the second end of the lever structure and implementing downward pressure limiting.

4. The deep sea buoyancy platform jettisoning mechanism according to claim 1, characterized in that: Two groups of pressure rod mounting seats are installed on the fixed frame structure (2), and the pressure rod mounting seats are located on both sides of the second end of the lever structure. The two ends of the electric explosion bolt pressure rod (4) are respectively fixed on the pressure rod mounting seats, spanning the second end of the lever structure and implementing downward pressure limiting.

5. The deep sea buoyancy platform jettisoning mechanism according to claim 1, characterized in that: The rotating shaft on the lever structure (6) is close to the first end of the lever structure (6) and far away from the second end of the lever structure (6).

6. The deep sea buoyancy platform jettisoning mechanism according to claim 1, characterized in that: The lever connecting device (7) comprises a base plate (71), a support column (72) and a rotating pressure shaft (73); the base plate (71) is fixed on the load (1); two support columns (72) are fixed on the base plate (71); two ends of the rotating pressure shaft (73) are rotatably mounted on the two support columns (72); a first end of the lever structure (6) is placed below the rotating pressure shaft (73); when flipping, the lever structure (6) is released from below the rotating pressure shaft and the load is dumped after being freed from the constraint.

7. A method for jettisoning a load from a deep-sea buoyancy platform, characterized in that: The deep-sea buoyancy platform jettisoning device according to any one of claims 1 to 6 comprises: Before the buoyant platform goes into the sea, the safety pin is pulled out; when it is necessary to dump the load, the electric blasting bolts in the sea receive the command and explode, the electric blasting bolt pressure rod is separated from the fixed frame structure, and the constraint on the second end of the lever structure is cancelled; under the action of gravity, the load flips the lever structure through the lever connecting device, the lever structure rotates around the rotating axis, the second end is tilted to make the first end descend and separate from the lever connecting device, the lever structure and the fixed frame structure are separated from the buoyant platform and the load, and the load dumping process is completed.

8. A method for jettisoning a load from a deep-sea buoyancy platform, characterized in that: The deep-sea buoyancy platform jettisoning device according to any one of claims 1 to 6 comprises: Before the buoyancy platform goes into the sea, the electric explosion bolt pressure rod is removed; when it is necessary to dump the load, the safety pin is pulled out in the sea to cancel the constraint on the second end of the lever structure; under the action of gravity, the load flips the lever structure through the lever connecting device, the lever structure rotates around the rotating axis, the second end is tilted to make the first end descend and separate from the lever connecting device, the lever structure and the fixed frame structure are separated from the buoyancy platform and the load, and the load dumping process is completed.

9. A method for jettisoning a deep-sea buoyancy platform, characterized in that: The deep-sea buoyancy platform jettisoning device according to any one of claims 1 to 6 comprises: Before the buoyancy platform goes to sea, the safety pin and the electric explosion bolt pressure rod are not removed in advance; when it is necessary to dump the load, the safety pin is pulled out in the sea and the electric explosion bolt is detonated to cancel the constraint on the second end of the lever structure; under the action of gravity, the load flips the lever structure through the lever connecting device, the lever structure rotates around the rotating axis, the second end tilts up to make the first end drop and separate from the lever connecting device, the lever structure and the fixed frame structure are separated from the buoyancy platform and the load, and the load dumping process is completed.

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