A foldable wing that resists roll in emergency floatation and method of use

Abstract

This invention relates to a folding wing capable of resisting roll during emergency surfacing and its method of use, comprising a horizontal wing assembly, a two-degree-of-freedom rotating component, a support assembly, a sliding assembly, and a hull assembly. The hull assembly includes a lightweight outer shell with recovery slots for the horizontal wing assemblies symmetrically arranged on it. Symmetrical pressure chambers are arranged inside the lightweight outer shell, with left and right jettison groups respectively arranged below the pressure chambers. The two-degree-of-freedom rotating component, support assembly, and sliding assembly are located at the center above the pressure chambers, and the horizontal wing assemblies are arranged within the recovery slots. Each horizontal wing assembly includes a wing plate and a pivot. It requires no power, requires no pressure resistance, has strong anti-interference capabilities, high reliability, low system load, and is convenient to use as a conventional safety reserve device.

Description

Technical Field

[0001] This invention relates to the field of underwater submersible powered anti-sinking equipment technology, and in particular to a folding wing that can resist roll during emergency surfacing and its usage method. Background Technology

[0002] As diving depth increases, the pressure resistance of submersibles becomes increasingly prominent. A multi-pressure-resistant chamber layout in the transverse section can effectively improve pressure resistance, reduce construction difficulty, and save costs compared to a single large pressure chamber. Under high pressure in the deep sea, a failure of a pressure chamber will generate extremely high inflow velocities and large volumes of water, leading to a reduction in the submersible's epicenter height and rapid sinking.

[0003] For emergency anti-sinking operations in the deep sea, gravity jettisoning mechanisms are typically used. However, these mechanisms require a specific heel angle (e.g., 45° or less) to successfully jettison the load. If water enters a pressure tank on one side, it will cause severe heeling, preventing the jettisoning mechanism from jettisoning and threatening the safety of the submersible. For deep-sea submersibles, the jettisoning mechanism is crucial to the safety of the hull; equipping both port and starboard sides can improve heel resistance and safety margin. When the amount of water entering on one side is not excessive and the leak is effectively plugged, single-sided jettisoning can effectively reduce heeling and achieve emergency surfacing.

[0004] During the ascent after jettisoning ballast, water ingress into the pressure chamber weakens the jettisoning effect, reducing the epicenter height and ascent speed, which is detrimental to rapid escape. During ascent, the horizontal fins of the submersible experience significant drag, leading to severe attitude instability and potentially capsizing. Furthermore, the submersible's high emergency ascent speed results in substantial impact loads upon impact with the surface, seriously threatening the structural safety of the horizontal fins.

[0005] While the horizontal wings can be folded using a folding mechanism, this requires pressure-resistant hydraulic cylinders or electric motors, resulting in complex mechanisms, high costs, low durability, and difficulty in handling severe malfunctions such as power outages or equipment damage. If the folding mechanism is only used for anti-roll and equipment protection during emergency ascents, its frequency of use is too low, making the cost-effectiveness particularly unsatisfactory.

[0006] There is currently no low-cost, high-reliability solution to the above problems, and a new design is needed. Summary of the Invention

[0007] In response to the shortcomings of the existing production technology, the applicant provides a folding wing that can resist tilting during emergency buoyancy and a method of use, which makes it power-free, pressure-resistant, highly anti-interference, highly reliable, and has a low system load, making it easy to use as a conventional safety reserve device to meet usage requirements.

[0008] The technical solution adopted in this invention is as follows:

[0009] A folding wing capable of resisting roll during emergency surfacing includes a horizontal wing assembly, a two-degree-of-freedom rotating component, a support assembly, a sliding assembly, and a hull assembly. The hull assembly includes a lightweight outer shell with recovery slots for the horizontal wing assemblies symmetrically arranged on the lightweight outer shell. Symmetrical pressure chambers are arranged inside the lightweight outer shell, and left and right jettison groups are respectively arranged below the pressure chambers. The two-degree-of-freedom rotating component, support assembly, and sliding assembly are located at the middle position above the pressure chambers, and the horizontal wing assemblies are arranged in the recovery slots. Each horizontal wing assembly includes a wing plate and a pivot.

[0010] The installation structure of a single wing plate is as follows: a support shaft base fixed inside the lightweight outer shell, a support shaft vertically fixed in the middle of the support shaft base, an external gear bearing below the support shaft, one end of the rotating shaft connected to the wing plate, and the other end fixed to the outer ring of the rotating bearing, the inner ring of the rotating bearing fixed to the lifting slider, the lifting slider sleeved on the support shaft, a limit cylinder and a rotating bearing are provided outside the lifting slider, the bottom of the limit cylinder is fixed to the outer ring of the rotating bearing, a spring is installed on the support shaft located below the outer ring of the rotating bearing and between the outer ring of the external gear bearing; a limit plate assembly is installed on the top surface of the limit cylinder, a slip ring is above the limit plate assembly, a counterweight is provided above the slip ring, a positioning bead is installed in the middle of the counterweight, a horizontal slide rail runs through the inside of the slip ring, the two ends of the horizontal slide rail are fixed to the hull through the slide rail base, and the center of the upper plane of the horizontal slide rail has a groove for the positioning bead to engage.

[0011] Its further technical solution lies in:

[0012] The wingplate has negative buoyancy underwater, and its center of gravity is in front of the pivot.

[0013] The wing plate is in a horizontal position, and the end face of the wing plate is parallel to the mid-longitudinal section.

[0014] The rotating bearing is unidirectional; when viewed from above the hull, it can only rotate clockwise.

[0015] The lifting slider is a cylindrical ball bearing guide sleeve.

[0016] The lower part of the limiting cylinder is a cylindrical shell, and the upper part of the limiting cylinder is a disc structure. The upper surface of the limiting cylinder has a cross groove.

[0017] The inner ring of the external gear bearing is fixed on the support shaft and cannot move up or down, while the outer ring has gears and can rotate around the axis.

[0018] The rotating bearing, external gear bearing, and support shaft have the same axis.

[0019] The limiting plate assembly is divided into a high limiting plate and two low limiting plates on the left and right sides. Both the high limiting plate and the low limiting plate are rigid rectangular thin plates with the same thickness.

[0020] A method for using a folding wing that can resist roll during emergency surfacing includes the following steps:

[0021] S1: Automatic response when the hull tilts significantly and drops deeply;

[0022] When a submersible experiences a hull breach, flooding, and significant tilt and depth loss underwater, if the tilt angle exceeds the allowable angle of the jettison mechanism, this device will automatically trigger to respond and resist tilt.

[0023] S2: Gravity-driven release of the limit;

[0024] When the hull is tilted significantly, gravity drives the sliding assembly to overcome the restriction of the positioning beads and slide to the end of the sinking side, releasing the rotation restriction on the raised side wing plate and reducing the rotation restriction force on the sinking side wing plate.

[0025] S3: When the drop depth is reduced, the folding of one side wing plate reduces the roll.

[0026] The side wing is lifted and rotated into the hull under gravity, while energy is stored in the spring system. When the side wing is fully rotated into the hull, the spring pushes the limit cylinder to move upward and embed into both sides of the slide rail, thus completely locking the rotation.

[0027] During the descent process, the side wing plates are raised and retrieved into the hull, while the sinking side wing plates generate anti-rolling moment, reducing the hull roll and facilitating jettisoning.

[0028] S4: Automatically recover the other wing panel when jettisoning ballast and ascending;

[0029] During the ascent after ballast jettisoning, the downward hydrodynamic thrust causes the sinking side wing plate to move downward, releasing the rotation restriction. Driven by the energy storage spring, the sinking side wing plate rotates and retracts into the hull. The spring pushes the limiting cylinder upward and locks into the horizontal slide rail, achieving the locking of the mechanism. During the ascent, the wing plate retracts into the hull, reducing the ascent resistance, increasing the ascent speed, and enhancing the stability of the ascent attitude.

[0030] The beneficial effects of this invention are as follows:

[0031] This invention features a compact and rational structure, and is easy to operate. Through the coordinated operation of components such as the horizontal wing, two-degree-of-freedom rotating parts, sliding limiters, and support assemblies, the wingplate folding can be easily accomplished. Normally used as a horizontal wing, this invention can retract one side of the horizontal wing into the hull when the submersible experiences water ingress into a single compartment, excessive roll, or inability to jettison ballast. This generates an anti-roll moment, reducing roll and facilitating ballast jettisoning. After jettisoning and during ascent, the energy stored in the recovered wingplate drives the other wingplate to retract into the hull, reducing roll imbalance and drag during ascent, and improving ascent speed and attitude stability. Upon surfacing, the horizontal wingplate retracts into the hull, protecting the wingplate from wave load impacts. This device requires no power, no pressure resistance, has strong anti-interference capabilities, high reliability, and low system load, making it suitable as a conventional safety reserve device.

[0032] When the hull rolls too much and jettisoning is impossible, this invention can automatically retract one-sided horizontal wing into the hull without power, forming an anti-roll moment, reducing the roll angle, and facilitating jettisoning.

[0033] When the hull is jettisoned and the vessel begins to rise, the energy stored in the recovery wing plate is used to drive the other wing plate back into the hull, reducing the roll imbalance force and drag during the ascent, increasing the ascent speed, and enhancing the stability of the ascent attitude.

[0034] When the vessel emerges from the water, the horizontal wings are retracted into the hull, reducing the impact load and facilitating the protection of the wing plates.

[0035] When the present invention is not in a large roll, it can be used as a horizontal wing without putting a burden on the hull.

[0036] This invention requires no power throughout the entire process, has strong anti-interference capabilities, high reliability, and improved safety reserves.

[0037] This invention adopts an all-mechanical structure design with no pressure-resistant structure, is suitable for all ocean depths, and has stable performance during long-term service.

[0038] This invention is small in size, light in weight, and has a low system load, making it easy to form a conventional safety reserve device. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the installation of the present invention on a submersible.

[0040] Figure 2 This is a diagram showing the state of the hull when the right-side pressure tank of the present invention is flooded and the hull is listing heavily (unable to jettison loads).

[0041] Figure 3 This is a diagram showing the state of the invention: the left wing is folded, the tilt is reduced, and the load is jettisoned.

[0042] Figure 4This is a diagram showing the state of the right wing after the jettison of the right group of the present invention, with reduced roll and transitioning to buoyancy and folded right wing.

[0043] Figure 5 This is a state diagram of the rapid ascent during the dual-group jettisoning of the present invention.

[0044] Figure 6 This is an overall layout diagram of the present invention.

[0045] Figure 7 for Figure 6 A magnified view of part A in the middle.

[0046] Figure 8 This is a diagram showing the folded state of the left and right wings of the present invention.

[0047] Figure 9 This is a half-sectional view of the left wing mechanism of the present invention.

[0048] Figure 10 This is a schematic diagram of the sliding limiting device of the present invention.

[0049] in:

[0050] 11. Wing plate; 12. Rotating shaft;

[0051] 21. Rotary bearing; 22. Lifting slider; 23. Limiting cylinder; 24. Spring; 25. External gear bearing;

[0052] 31. Support shaft; 32. Support shaft base; 33. Horizontal slide rail; 34. Slide rail base;

[0053] 41. Limiting plate assembly; 42. Slip ring; 43. Counterweight; 44. Positioning bead;

[0054] 411. High limit film; 412. Low limit film;

[0055] 51. Lightweight outer shell; 52. Pressure chamber; 53. Left group jettison; 54. Right group jettison. Detailed Implementation

[0056] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0057] like Figures 1-10As shown, the folding wing capable of resisting roll during emergency surfacing in this embodiment includes a horizontal wing assembly, a two-degree-of-freedom rotating component, a support assembly, a sliding assembly, and a hull assembly. The hull assembly includes a lightweight outer shell 51, on which recovery slots for the horizontal wing assemblies are symmetrically arranged. Symmetrical pressure chambers 52 are arranged inside the lightweight outer shell 51. A left jettison group 53 and a right jettison group 54 are respectively arranged below the pressure chambers 52. A two-degree-of-freedom rotating component, a support assembly, and a sliding assembly are arranged at the middle position above the pressure chambers 52. The horizontal wing assembly is arranged in the recovery slot. Each horizontal wing assembly includes a wing plate 11 and a rotating shaft 12.

[0058] The installation structure of a single wing plate 11 includes a support shaft base 32 fixed inside the lightweight outer shell 51, a support shaft 31 vertically fixed in the middle of the support shaft base 32, an external gear bearing 25 disposed below the support shaft 31, one end of a rotating shaft 12 connected to the wing plate 11, and the other end fixed to the outer ring of a rotating bearing 21, the inner ring of the rotating bearing 21 fixed to a lifting slider 22, the lifting slider 22 sleeved on the support shaft 31, a limit cylinder 23 and a rotating bearing 21 disposed outside the lifting slider 22, and the bottom of the limit cylinder 23 fixed to the rotating bearing 21. On the outer ring, a spring 24 is installed on the support shaft 31 located below the outer ring of the rotating bearing 21 and between the outer ring of the external gear bearing 25; a limit plate assembly 41 is installed on the top surface of the limit cylinder 23, a slip ring 42 is above the limit plate assembly 41, a counterweight 43 is provided above the slip ring 42, a positioning bead 44 is installed in the middle of the counterweight 43, a horizontal slide rail 33 runs through the inside of the slip ring 42, the two ends of the horizontal slide rail 33 are fixed to the hull through the slide rail base 34, and the center of the upper plane of the horizontal slide rail 33 has a groove for the positioning bead 44 to engage.

[0059] The wing plate 11 has negative buoyancy underwater, and the center of gravity of the wing plate 11 is in front of the pivot 12.

[0060] The wing plate 11 is in a horizontal position, and the end face of the wing plate 11 is parallel to the mid-longitudinal section.

[0061] The rotating bearing 21 is unidirectional; when viewed from above the hull, it can only rotate clockwise.

[0062] The lifting slider 22 is a cylindrical ball bearing guide sleeve.

[0063] The lower part of the limiting cylinder 23 adopts a cylindrical shell, and the upper part of the limiting cylinder 23 adopts a disc structure. The upper surface of the limiting cylinder 23 has a cross groove.

[0064] The inner ring of the external gear bearing 25 is fixed on the support shaft 31 and cannot move up or down, while the outer ring has gears and can rotate around the axis.

[0065] The axes of the rotating bearing 21, the external gear bearing 25, and the support shaft 31 are the same.

[0066] The limiting piece assembly 41 is divided into a high limiting piece 411 and two low limiting pieces 412 on the left and right. Both the high limiting piece 411 and the low limiting piece 412 are rigid rectangular thin pieces with the same thickness.

[0067] The specific structure and function of the folding wing that can resist roll during emergency surfacing, as described in this invention, are as follows:

[0068] It mainly includes horizontal wing assembly, two-degree-of-freedom rotating component, support assembly, sliding assembly and hull assembly.

[0069] The horizontal wing assembly includes [missing information].

[0070] The wing plate 11 has negative buoyancy underwater, and its center of gravity is in front of the pivot 12. The wing plate 11 is in a horizontal state, and its end face is parallel to the mid-longitudinal section.

[0071] One end of the rotating shaft 12 is connected to the wing plate 11, and the other end is fixed to the outer ring of the rotating bearing 21.

[0072] The two-degree-of-freedom rotating component includes a rotary bearing 21, a lifting slider 22, a limiting cylinder 23, a spring 24, and an external gear bearing 25.

[0073] The rotating bearing 21 is unidirectional; viewed from above the hull, it can only rotate clockwise. The inner ring of the rotating bearing 21 is fixed to the lifting slider 22 and moves up and down with it.

[0074] The lifting slider 22 is a cylindrical ball bearing guide sleeve, which is fitted on the support shaft 31. It can only slide up and down with low friction and cannot rotate horizontally.

[0075] The lower part of the limiting cylinder 23 is a cylindrical shell, and the upper part is a disc structure. The bottom of the limiting cylinder 23 is fixed to the outer ring of the rotating bearing 21. The upper surface of the limiting cylinder 23 has a cross-shaped groove. Among them, the groove perpendicular to the mid-longitudinal section is the limiting plate groove, and its width is slightly greater than the thickness of the limiting plate. The other is the slide rail groove, which is slightly greater in width than the width of the horizontal slide rail 33 and deeper than the height of the lower limiting plate 412.

[0076] Spring 24 is sleeved on support shaft 31, fixed above to the lower part of the outer ring of rotating bearing 21, and fixed below to the outer ring of external gear bearing 25.

[0077] The inner ring of the external gear bearing 25 is fixed on the support shaft 31 and cannot move up or down, while the outer ring has gears and can rotate around the axis.

[0078] The rotating bearing 21, the external gear bearing 25, and the support shaft 31 share the same axis. Their common axis is vertical and parallel to the mid-longitudinal section of the hull.

[0079] The support components include a support shaft 31, a support shaft base 32, a horizontal slide rail 33, and a slide rail base 34.

[0080] The support shaft 31 is vertically fixed to the bottom support shaft base 32, and its surface has a vertical limiting groove.

[0081] The horizontal slide rail 33 is a square slide rail, with both ends fixed to the hull via slide rail bases 34. It is parallel to the waterline plane of the hull and symmetrical about the longitudinal section of the hull. The upper surface of the horizontal slide rail 33 has a groove at the center for the engagement of the positioning ball 44.

[0082] The sliding assembly includes a limiting plate assembly 41, a slip ring 42, a counterweight 43, and a positioning bead 44.

[0083] The limiting plate assembly 41 consists of a high limiting plate 411 and two lower limiting plates 412 on the left and right, all of which are rigid rectangular thin plates of the same thickness. The height of the high limiting plate 411 is greater than that of the lower limiting plates 412. The limiting plate assembly 41 is fixedly connected to the lower part of the slip ring 42 and is symmetrical about the axis of the positioning bead 44.

[0084] During initial installation, the sliding assembly is located in the center of the horizontal slide rail 33, and the spring 24 pushes the limiting cylinder 23 upward to press against the high limiting piece 411. The high limiting piece 411 has a certain width and can be inserted into the limiting piece grooves of the left and right limiting cylinders 23 simultaneously, preventing the limiting cylinders 23 from rotating horizontally. When the sliding assembly overcomes the restriction of the positioning bead 44 and slides to the end of the sinking side, only the low limiting piece 412 is located in the groove of the limiting cylinder 23 on the sinking side.

[0085] The slip ring 42 is a ball bearing guide sleeve that fits onto the horizontal slide rail 33. It allows for low rolling resistance sliding but cannot rotate. The slip ring 42 has a threaded hole in the upper center.

[0086] The counterweight 43 is installed above the slip ring 42 and has a threaded hole in the middle.

[0087] The positioning bead 44 is a threaded positioning bead that passes vertically through the threaded holes of the slip ring 42 and the counterweight 43, thus achieving a fixed connection between the three. The positioning bead 44 protrudes from the slip ring 42 and can engage with the groove on the top of the horizontal slide rail 33.

[0088] The hull components include a lightweight outer shell 51, a pressure chamber 52, a port jettison 53, and a starboard jettison 54.

[0089] The lightweight outer shell 51 has wing plates 11 for recovery channels.

[0090] The left group jettison 53 is located on the lower left side of the hull, and the right group jettison 54 is located on the lower right side of the hull.

[0091] The response roll angle of this device refers to the minimum hull roll angle at which the sliding component slides over the restriction of the positioning bead 44. This angle is the same as the maximum roll angle at which the ballast jetting mechanism can successfully jettison the ballast.

[0092] The method of using the folding wing that can resist roll during emergency surfacing in this embodiment includes the following steps:

[0093] S1: Automatic response when the hull tilts significantly and drops deeply;

[0094] When a submersible experiences a hull breach, flooding, and significant tilt and depth loss underwater, if the tilt angle exceeds the allowable angle of the jettison mechanism, this device will automatically trigger to respond and resist tilt.

[0095] S2: Gravity-driven release of the limit;

[0096] When the hull is tilted significantly, the gravity-driven sliding assembly overcomes the restriction of the positioning bead 44 and slides to the end of the sinking side, releasing the rotation restriction on the raised side wing plate 11 and at the same time reducing the rotation restriction force on the sinking side wing plate 11.

[0097] S3: When the drop depth is reduced, the folding of one side wing plate reduces the roll.

[0098] The side wing plate 11 is lifted and rotated into the hull under gravity, while energy is stored in the spring system. When the side wing plate 11 is fully rotated into the hull, the spring 24 pushes the limiting cylinder 23 to move upward and embed into both sides of the slide rail, thus completely locking the rotation.

[0099] During the depth drop, the side wing plate 11 is raised and retracted into the hull, and the sinking side wing plate generates an anti-rolling moment, which reduces the hull roll and facilitates the jettisoning of loads.

[0100] S4: Automatically recover the other wing plate 11 when jettisoning ballast and ascending;

[0101] During the ascent after ballast jettisoning, the downward hydrodynamic thrust causes the sinking side wing plate to move downward, releasing the rotation restriction. Driven by the energy storage spring, the sinking side wing plate 11 rotates and retracts into the hull. The spring 24 pushes the limiting cylinder 23 upward and locks it into the horizontal slide rail 33, thus locking the mechanism. During the ascent, the wing plate 11 retracts into the hull, reducing the ascent resistance, increasing the ascent speed, and enhancing the stability of the ascent attitude.

[0102] In actual work process:

[0103] Since this device is installed symmetrically on the left and right, and the anti-tilt principle is the same on both sides, this article only uses right-tilt as an example for explanation.

[0104] Because the roll angle of wing plate 11 is the same as the allowable roll angle of the jettison mechanism, typically reaching 45° or greater, far exceeding the hull roll angle during normal navigation, the horizontal wing cannot be triggered to rotate during normal navigation. The horizontal wing remains perpendicular to the mid-section of the hull and is used as a conventional stabilizing wing.

[0105] When the submersible takes on water in the pressure tank 52 on one side in deep water, it will sink rapidly with a decrease in its center of gravity and a large roll. If the roll angle of the submersible quickly exceeds the allowable value of the jettison device, jettisoning will be impossible, threatening the safety of the submersible. This device can passively reduce the roll of the submersible, facilitating a smooth jettisoning and resurfacing.

[0106] Since the roll angle of the wing plate 11 is the same as the maximum roll angle allowed by the jettison mechanism, the roll angle of the hull is greater than the roll angle of the wing plate 11.

[0107] During the movement of the hull, the distance between the center of gravity of the wing plate 11 and the axis of the rotating shaft 12 is the rotational force arm. Therefore, the rotational force generated by the gravity of the wing plate 11 is relatively small. The wing plate 11 drives the limiting cylinder 23 to rotate and press against the limiting plate through the rotating shaft 12. The friction between the limiting cylinder 23 and the limiting plate is small and will not significantly interfere with the sliding of the limiting plate.

[0108] When the hull is tilted significantly, the sliding component, under the influence of its own weight, breaks through the restriction of the positioning bead 44 and moves to the right until the slip ring 42 is stopped by the limit of the slide rail base 34 at the end of the horizontal slide rail 33. At this time, the low limit plate 412 has just moved completely onto the limit cylinder 23 above the right rudder.

[0109] The left wing's limiting cylinder 23 is no longer restricted by the limiting plate and can rotate freely. Since the left wing's center of gravity is in front of the pivot 12, during roll, the leading edge of the wing plate 11 rotates towards the bow of the hull. As the angle between the leading edge of the wing plate 11 and the hull decreases, the distance between the wing plate 11's center of gravity and the axis of rotation gradually increases, the rotational force arm gradually increases, and therefore, the rotational force gradually increases. Due to the relatively long horizontal wing, the rotational force is quite considerable.

[0110] Since the lifting slider 22 cannot rotate horizontally, the left wing plate 11 can only rotate around the lifting slider 22, along with the pivot 12 and the outer ring of the steering bearing. Because the pivot bearing 21 is a one-way bearing, the left wing can only rotate in one direction towards the hull, and cannot rotate outwards after stopping, thus achieving position locking and folding of the left wing. The greater the hull's heel angle, the greater the folding force, and the smaller the angle between the left wing and the mid-longitudinal section of the hull after folding stops.

[0111] If the roll angle is too large, when the left wing rotates to 90°, the groove on the upper part of the limiting cylinder 23 will rotate to be parallel to the slide rail. Under the action of the spring 24, the limiting cylinder 23 moves upward and automatically engages with both sides of the slide rail, achieving complete locking of rotation. At this time, the left wing plate 11 is completely retracted into the hull.

[0112] During the drop, the right wing's limiting cylinder 23 is restricted by the lower limiting plate 412, and the hydrodynamic thrust on the right wing is upward, further compressing the lower limiting plate 412. Therefore, the right wing cannot rotate and will not fold throughout the drop. During the left wing's rotation and folding process, the steering bearing rotates accordingly, causing the left spring 24 to twist, which is then transmitted to the right spring 24 via the lower left and right gears. Both left and right springs 24 undergo torsional elastic deformation, absorbing the rotational force of the left wing and thus storing the rotational force.

[0113] When the submersible experiences a large roll and deep dive, the left wing of this device folds into the hull through the above process, while the hydrodynamic force generated by the right wing creates a righting moment. Due to the large negative buoyancy during the deep dive after the hull breach, the epicenter height decreases, and the diving speed is faster. The righting moment generated by the single-side wing plate 11 is considerable, which can effectively reduce the roll and help achieve ballast jettisoning.

[0114] To avoid exacerbating the list, the starboard hull 54 had to be jettisoned first. After the list angle decreased, the submarine began to rise.

[0115] As the submersible surfaces, the downward hydrodynamic force compresses the spring 24 beneath the right wing, causing it to move downwards. Due to the relatively small height of the lower limiting plate 412, the right wing's limiting cylinder 23 only requires a small downward stroke to disengage from the limiting plate. Therefore, the right wing's rotation can be activated at a relatively low hull surfacing speed. Once the right wing's limiting cylinder 23 can rotate freely, the energy stored in the left and right springs 24 is automatically released, driving the right steering bearing, pivot 12, and horizontal fin to rotate. The right wing begins to rotate forward, folding into the hull. Because the hull roll angle during right wing folding is smaller than that during left wing folding, the required energy is less than the energy stored during left wing folding, thus enabling right wing recovery. Since the right steering bearing is a one-way bearing, when the right wing stops rotating, it cannot rotate outwards, achieving one-way locking of the position.

[0116] When the right wing retracts to 90°, the groove on the upper surface of the right wing's limiting cylinder 23 is parallel to the horizontal sliding rail 33. When the right wing is folded into the hull, the vertical water flow thrust decreases, and under the force of the spring 24, the right wing's limiting cylinder 23 moves upward, locking into the horizontal sliding rail 33, thus completely stopping the rotation. At this point, the right wing plate 11 is completely retracted into the hull.

[0117] Ultimately, during the ballast jettisoning and ascent process, the left and right wing plates 11 can be recovered into the hull without power, reducing buoyancy drag, increasing ascent speed, and enhancing the stability of the ascent attitude. During the surface emergence process, the wing plates 11 can be effectively protected from wave loads.

[0118] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A folding wing capable of resisting roll during emergency surfacing, characterized in that: The device includes a horizontal wing assembly, a two-degree-of-freedom rotating component, a support assembly, a sliding assembly, and a hull assembly. The hull assembly includes a lightweight outer shell (51). The lightweight outer shell (51) has symmetrically arranged recovery slots for the horizontal wing assembly. The lightweight outer shell (51) has symmetrically arranged pressure chambers (52). The pressure chambers (52) have left and right jettisoning devices (53 and 54) arranged below them respectively. The two-degree-of-freedom rotating component, the support assembly, and the sliding assembly are located at the middle position above the pressure chambers (52). The horizontal wing assembly is located in the recovery slot. Each horizontal wing assembly includes a wing plate (11) and a rotating shaft (12). The installation structure of a single wing plate (11) is as follows: a support shaft base (32) fixed inside the lightweight outer shell (51) is included, a support shaft (31) is vertically fixed in the middle of the support shaft base (32), an external gear bearing (25) is provided below the support shaft (31), one end of the rotating shaft (12) is connected to the wing plate (11), and the other end is fixed to the outer ring of the rotating bearing (21). The inner ring of the rotating bearing (21) is fixed to the lifting slider (22), the lifting slider (22) is sleeved on the support shaft (31), and a limit cylinder (23) and a rotating bearing (21) are provided outside the lifting slider (22). The bottom of the limit cylinder (23) is fixed to the rotating bearing (21). On the outer ring of the rotating bearing (21), a spring (24) is installed on the support shaft (31) located below the outer ring of the rotating bearing (21) and between the outer ring of the external gear bearing (25); a limiting plate assembly (41) is installed on the top surface of the limiting cylinder (23), a slip ring (42) is above the limiting plate assembly (41), a counterweight (43) is provided above the slip ring (42), a positioning bead (44) is installed in the middle of the counterweight (43), a horizontal slide rail (33) runs through the inside of the slip ring (42), the two ends of the horizontal slide rail (33) are fixed to the hull through the slide rail base (34), and the center of the upper plane of the horizontal slide rail (33) has a groove for the positioning bead (44) to engage.

2. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The wing plate (11) has negative buoyancy underwater, and the center of gravity of the wing plate (11) is in front of the pivot (12).

3. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The wing plate (11) is in a horizontal state, and the end face of the wing plate (11) is parallel to the mid-longitudinal section.

4. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The rotating bearing (21) is unidirectional, and when viewed from above the hull, it can only rotate clockwise.

5. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The lifting slider (22) is a cylindrical ball bearing guide sleeve.

6. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The lower part of the limiting cylinder (23) adopts a cylindrical shell, the upper part of the limiting cylinder (23) adopts a disc structure, and the upper surface of the limiting cylinder (23) has a cross groove.

7. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The inner ring of the external gear bearing (25) is fixed on the support shaft (31) and cannot move up or down, while the outer ring has a gear and can rotate around the axis.

8. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The axes of the rotating bearing (21), the external gear bearing (25), and the support shaft (31) are the same.

9. A folding wing capable of resisting roll during emergency surfacing as described in claim 1, characterized in that: The limiting piece assembly (41) is divided into a high limiting piece (411) and two low limiting pieces (412) on the left and right. Both the high limiting piece (411) and the low limiting piece (412) are rigid rectangular thin sheets with the same thickness.

10. A method of using a folding wing capable of resisting roll during emergency surfacing, as described in claim 1, characterized in that: Includes the following steps: S1: Automatic response when the hull tilts significantly and drops deeply; When a submersible experiences a hull breach, flooding, and significant tilt and depth loss underwater, if the tilt angle exceeds the allowable angle of the jettison mechanism, this device will automatically trigger to respond and resist tilt. S2: Gravity-driven release of the limit; When the hull is tilted by a large angle, the gravity-driven sliding assembly overcomes the restriction of the positioning ball (44) and slides to the end of the sinking side, releasing the rotation restriction on the raised side wing plate (11) and at the same time reducing the rotation restriction force on the sinking side wing plate (11). S3: When the drop depth is reduced, the folding of one side wing plate reduces the roll. The side wing plate (11) is lifted and rotated into the hull under gravity, while storing energy in the spring system. When the side wing plate (11) is fully rotated into the hull, the spring (24) pushes the limiting cylinder (23) to move upward and embed into both sides of the slide rail, thus completely locking the rotation. During the descent process, the side wing plate (11) is raised and retracted into the hull, and the sinking side wing plate generates an anti-rolling moment, which reduces the hull roll and facilitates the jettisoning. S4: Automatically recover the other wingplate (11) when jettisoning and surfacing; During the ascent after ballast jettisoning, the downward hydrodynamic thrust causes the sinking side wing plate to move downward, releasing the rotation restriction. Driven by the energy storage spring, the sinking side wing plate (11) rotates and retracts into the hull. The spring (24) pushes the limiting cylinder (23) upward and locks into the horizontal slide rail (33), thus locking the mechanism. During the ascent, the wing plate (11) retracts into the hull, reducing the ascent resistance, increasing the ascent speed, and enhancing the stability of the ascent attitude.

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