Passive anti-rolling device and working process dedicated to emergency floating

Abstract

The present application relates to passive anti-rolling device and working process specially used for emergency floating, including boat body assembly, wing assembly is symmetrically arranged at both ends of the boat body assembly, single wing assembly is supported by a set of interval rudder shaft base, the rudder shaft base is arranged inside the boat body assembly, oil cylinder assembly is installed between the two rudder shaft bases, limit assembly is installed on the oil cylinder assembly, upper sliding block and lower sliding block spaced apart from each other are installed in the inside of the oil cylinder assembly;The structure of single wing assembly is: including wing plate, pivot and pivot key, the wing plate is arranged outside the boat body assembly, the center of gravity of the wing plate is located on the axis of the pivot, the axis of the pivot is perpendicular to the centerplane of the boat body assembly, the pivot penetrates the whole oil cylinder assembly, the bottom surface of the pivot key is fixedly connected on the pivot of the middle section in the oil cylinder assembly;The structure of the upper sliding block and the lower sliding block is same, the structure of the upper sliding block is: including a first counterweight plate arranged in the middle of the oil cylinder assembly, a first ball slide is arranged on both sides of the first counterweight plate, and the use is flexible and convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of emergency ascent equipment of submersibles, in particular to a passive anti-rolling device and working process specially used for emergency ascent. BACKGROUND

[0002] In deep sea operation of super large diving depth, the submersible adopts the structure form of multiple small pressure cabins, which can reduce construction difficulty, improve pressure resistance and reduce equipment weight. In the environment of deep sea super high pressure, once pipeline damage or pressure cabin damage occurs, the seawater inflow rate is extremely high, the water inflow is large, and the submersible quickly drops. The propulsion power of the operational deep submersible is small, and the anti-sinking ability is weak, and the ballast device is the most effective solution. However, large ballast devices can usually only throw ballast within a certain hull roll angle. For the submersible with lateral multi-pressure cabin arrangement, unilateral pressure cabin water inflow will produce a roll angle much larger than that in the conventional case, which will cause the ballast to be unable to throw, and will threaten the safety of the hull.

[0003] In order to realize smooth ballast, it is necessary to restore the hull to the allowable roll angle, that is, anti-rolling measures need to be taken. In the case of serious failures such as cabin damage and equipment damage, the power, hydraulic pressure or control system is difficult to ensure that it can still work, and the anti-risk ability is weak. Only self-contained and anti-interference devices can be used as the last insurance.

[0004] In the ballast ascent, the water inflow reduces the effect of the ballast, resulting in slow ascent speed and weak emergency recovery ability. The horizontal wing of the submersible has large resistance in the ascent, which is not conducive to the stability of the hull attitude, and has a negative impact on the safe ascent.

[0005] There is no systematic and economical solution to the above problems, and a new solution is urgently needed. SUMMARY

[0006] The applicant provides a passive anti-rolling device and working process specially used for emergency ascent with reasonable structure to solve the above problems in the prior art, so that the device works stably, is flexible and convenient to use, and greatly improves the anti-sinking ability.

[0007] The technical solution adopted by the present application is as follows:

[0008] A passive anti-rolling device dedicated to emergency floating, comprising a hull assembly, wing assemblies symmetrically arranged at both ends of the hull assembly, a single wing assembly supported by a set of spaced rudder shaft pedestals, the rudder shaft pedestals arranged inside the hull assembly, an oil cylinder assembly installed between the two rudder shaft pedestals, a limiting assembly installed on the oil cylinder assembly, an upper sliding block and a lower sliding block spaced apart inside the oil cylinder assembly; the structure of a single wing assembly comprises a wing plate, a rotating shaft and a rotating shaft key, the wing plate is arranged outside the hull assembly, the center of gravity of the wing plate is located on the axis of the rotating shaft, the axis of the rotating shaft is perpendicular to the centerline of the hull assembly, the rotating shaft penetrates through the entire oil cylinder assembly, and the bottom surface of the rotating shaft key is fixed on the rotating shaft of the middle section in the oil cylinder assembly; the upper sliding block and the lower sliding block have the same structure, and the structure of the upper sliding block comprises a first counterweight plate arranged in the middle of the oil cylinder assembly and a first ball sliding block arranged on both sides of the first counterweight plate.

[0009] As a further improvement of the above technical solution:

[0010] The structure of the hull assembly comprises a light shell, a plurality of pressure-resistant cabins are arranged inside the light shell, and a weight-throwing object is arranged at the bottom of the hull.

[0011] The rotating shaft adopts a rigid cylindrical shaft.

[0012] The rotating shaft key adopts a rectangular rigid key with a rounded head, and the surface of the rotating shaft key is provided with a rubber layer.

[0013] The thickness of the rotating shaft key is the same as the gap between the upper sliding block and the lower sliding block 4.

[0014] The structure of the oil cylinder assembly comprises an oil cylinder shell, the bottom sides of the oil cylinder shell are provided with mounting ear plates, the mounting ear plates are fixed on the hull by fasteners, the inside of the oil cylinder shell is filled with oil lubricant, and the right side wall of the oil cylinder shell is provided with two threaded holes for mounting the limiting assembly.

[0015] The oil cylinder shell adopts a rectangular thin shell structure.

[0016] The structure of the limiting assembly comprises a limiting nut mounted in the threaded hole, the limiting nut is deeply pressed into the inside of the oil cylinder and the end faces of the upper sliding block and the lower sliding block; and a limiting rope, one end of the limiting rope is connected to the front wall in the oil cylinder shell, and the other end is connected to the front end face of the upper sliding block.

[0017] The limiting rope adopts a light and soft rigid rope.

[0018] The working process of a passive anti-rolling device dedicated to emergency floating, comprising the following processes:

[0019] When used as a stabilizing wing:

[0020] When the response roll angle is equal to the maximum allowable roll angle of the ballast device, the roll angle of the submarine will not exceed the response roll angle of the passive anti-roll device, the upper slide and the lower slide cannot break through the limit of the limiting nut, continuously lock the shaft, limit the rotation, maintain the horizontal state of the wing plate, and realize the function of the stabilizing wing.

[0021] When used as an emergency float:

[0022] The passive anti-roll device is symmetrically installed on the left and right sides, and has the same effect in left and right rolling.

[0023] When the submarine sinks rapidly due to large roll caused by breaking and flooding, if the roll exceeds the maximum allowable roll angle of the ballast mechanism, the ballast mechanism cannot implement the ballast, and since the response roll angle is equal to the maximum allowable roll angle of the ballast device, the passive anti-roll device is triggered to work at this time.

[0024] At this time, the gravity-driven slide is sliding to overcome the limit of the limiting nut, partially releasing the rotation restriction of the wing plate; the wing plate on the lifting side is turned to a vertical state under the action of the diving water flow force and is self-locked; the wing plate on the sinking side maintains a horizontal state, and the wing plates on both sides generate an anti-roll water power torque during the deepening process, reducing the roll and facilitating the ballast.

[0025] After the ballast, the wing plate on the sinking side is turned to a vertical state under the action of the water flow force and is locked, reducing the floating resistance and enhancing the stability of the attitude.

[0026] The beneficial effects of the present application are as follows:

[0027] The present application has the advantages that the structure is compact and reasonable, the operation is convenient, the wing assembly, the rudder shaft base, the upper slide, the lower slide, the limiting assembly, the oil cylinder assembly, the boat body assembly and other components work together to conveniently complete the switching work of the attitude of the wing plate, the wing plate is used as a horizontal stabilizing wing in a normal state, when the submarine sinks due to breaking and excessive roll, the rotation restriction of the wing plate on the lifting side is automatically released, the wing plate is turned to a vertical state, and the wing plate on the other side still maintains a horizontal state, the left and right wings generate an anti-roll torque during the deepening, the roll is reduced, and the ballast is facilitated, when the submarine floats after the ballast, the wing plate on the sinking side is automatically turned to a vertical state under the action of the water power and is locked, the unbalanced force is eliminated, the floating resistance is reduced, the floating speed and the stability are improved. The present application does not need a rudder and energy, the structure is independent, the risk resistance is strong, the function of the stabilizing wing is not affected, the safety reserve is enhanced, and the sinking resistance is improved.

[0028] Meanwhile, the present application also has the following advantages:

[0029] 1) When the submarine sinks due to breaking and large roll, the single horizontal wing plate will be automatically turned to a vertical state, a righting torque is formed, the roll is weakened, and the ballast mechanism is facilitated to smoothly ballast.

[0030] 2) When the submarine is thrown and turned to float, the other side wing plate is also turned to vertical state, reducing the floating resistance, improving the floating speed and enhancing the stability of the posture.

[0031] 3) The function of the existing stabilizing wing of the boat body is expanded, the change is small, and the practicability is strong. When the conventional navigation is still used as a stabilizing wing, no additional influence is generated on the boat body.

[0032] 4) Without rudder, energy and control system, independent structure, without pressure resistance, simple structure, light weight and high reliability, which can be used as a conventional safety reserve device.

[0033] 5) By mechanical transmission, the large rotating shaft rotating force is changed into easy-to-control sliding force, which can be conveniently limited and locked by limiting nuts, and the damage of large dynamic load to the equipment is avoided.

[0034] 6) The roll response angle can be adjusted by adjusting the limiting nuts, and the operation is convenient and the adaptability is wide. DETAILED DESCRIPTION

[0035] Figure 1 The installation schematic diagram of the passive anti-rolling device for emergency floating in the submarine is described in the application.

[0036] Figure 2 The structure diagram of the left wing rotation when the passive anti-rolling device for emergency floating in the submarine described in the application occurs severe roll.

[0037] Figure 3 The structure diagram of the right wing rotation when the passive anti-rolling device for emergency floating in the submarine described in the application is thrown and turned to float.

[0038] Figure 4 The structure schematic diagram of the left wing device.

[0039] Figure 5 The internal structure schematic diagram of the left wing device.

[0040] Figure 6 The left wing rotation state diagram when the submarine described in the application is severely rolled and dropped.

[0041] Figure 7 The right wing rotation state diagram when the submarine described in the application is severely rolled and dropped.

[0042] Figure 8 The right wing rotation state diagram when the submarine described in the application is thrown and turned to float.

[0043] Among them:

[0044] 1. Wing assembly; 2. Rudder shaft base; 3. Upper slider; 4. Lower slider; 5. Limiting assembly; 6. Hydraulic cylinder assembly; 7. Hull assembly;

[0045] 11. Wing plate; 12. Shaft; 13. Shaft key;

[0046] 31. Counterweight plate No. 1; 32. Ball bearing slider No. 1;

[0047] 41. Counterweight plate No. 2; 42. Ball bearing slider No. 2;

[0048] 51. Limiting nut; 52. Limiting rope;

[0049] 61. Cylinder housing; 62. Upper slide rail; 63. Lower slide rail;

[0050] 71. Lightweight outer shell; 72. Pressure chamber; 73. Jetpack. Detailed Implementation

[0051] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0052] like Figures 1-7 As shown, the passive anti-roll device for emergency buoyancy in this embodiment includes a hull assembly 7. Wing assemblies 1 are symmetrically arranged at both ends of the hull assembly 7. Each wing assembly 1 is supported by a set of spaced rudder shaft bases 2. The rudder shaft bases 2 are located inside the hull assembly 7. A hydraulic cylinder assembly 6 is installed between the two rudder shaft bases 2. A limit assembly 5 is installed on the hydraulic cylinder assembly 6. Upper sliders 3 and lower sliders 4, spaced vertically, are installed inside the hydraulic cylinder assembly 6. The structure of a single wing assembly 1 includes a wing plate 11, a rotating shaft 12, and... The pivot key 13 and the wing plate 11 are located on the outside of the hull assembly 7. The center of gravity of the wing plate 11 is located on the axis of the pivot 12. The axis of the pivot 12 is perpendicular to the mid-longitudinal section of the hull assembly 7. The pivot 12 runs through the entire cylinder assembly 6. The bottom surface of the pivot key 13 is fixed to the pivot 12 in the middle section of the cylinder assembly 6. The upper slider 3 and the lower slider 4 have the same structure. The upper slider 3 has the following structure: it includes a first counterweight plate 31 located in the middle of the cylinder assembly 6. A first ball slider 32 is provided on both sides of the first counterweight plate 31.

[0053] The structure of the hull assembly 7 is as follows: it includes a lightweight outer shell 71, the interior of which is provided with multiple pressure chambers 72, and a jettison 73 is provided at the bottom of the hull.

[0054] The rotating shaft 12 is a rigid cylindrical shaft.

[0055] The pivot key 13 is a rectangular rigid key with a rounded head, and the surface of the pivot key 13 is covered with a rubber layer.

[0056] The thickness of the pivot key 13 is the same as the gap between the upper slider 3 and the lower slider 4.

[0057] The structure of the oil cylinder assembly 6 comprises an oil cylinder shell 61, the bottom of which is provided with mounting lugs, the mounting lugs are fixed on the hull through fasteners, the inside of the oil cylinder shell 61 is filled with lubricating oil, and the right side wall of the oil cylinder shell 61 is provided with two threaded holes for mounting the limiting assembly 5.

[0058] The oil cylinder shell 61 adopts a cuboid thin shell structure.

[0059] The structure of the limiting assembly 5 comprises a limiting nut 51 mounted in the threaded hole, the limiting nut 51 penetrates into the inside of the oil cylinder and is pressed on the end face of the upper sliding block 3 and the lower sliding block 4 respectively, and the limiting rope 52 is connected to the front wall in the oil cylinder shell 61 at one end and connected to the front end face of the upper sliding block 3 at the other end.

[0060] The limiting rope 52 adopts a light and soft rigid rope.

[0061] The specific structure and function of the passive anti-rolling device for emergency floating are as follows:

[0062] The device is provided with two sets of left and right symmetrical devices installed on the two sides of the hull of the submersible.

[0063] This embodiment only describes the composition of the left wing device. In this embodiment, the length in the oil cylinder refers to the length along the axis of the rotating shaft 12.

[0064] The device mainly comprises a wing assembly 1, a rudder shaft base 2, an upper sliding block 3, a lower sliding block 4, a limiting assembly 5, an oil cylinder assembly 6 and a hull assembly 7.

[0065] The wing assembly 1 comprises a wing plate 11, a rotating shaft 12 and a rotating shaft key 13.

[0066] The wing plate 11 has a center of gravity located on the axis of the rotating shaft 12, and the rear aspect of the rotating shaft 12 is larger than the front aspect.

[0067] The rotating shaft 12 is a rigid cylindrical shaft, and the axis of the rotating shaft 12 is perpendicular to the center longitudinal section of the hull.

[0068] The rotating shaft key 13 is a rectangular rigid key with a rounded head, and the surface is provided with a rubber layer.

[0069] The bottom surface of the rotating shaft key 13 is fixed on the rotating shaft 12 in the middle section of the oil cylinder, the thickness of the rotating shaft key 13 is the same as the gap between the upper sliding block 3 and the lower sliding block 4, the tip circle diameter during rotation is slightly larger than the height of the oil cylinder, and the distance between the front and rear end faces of the rotating shaft key 13 and the front and rear inner wall faces of the oil cylinder is one third of the length in the oil cylinder.

[0070] The rudder shaft base 2 is provided with two, which is used for supporting and fixing the rudder shaft, and allows the rudder shaft to rotate around the rudder shaft axis with low resistance.

[0071] The upper sliding block 3 is connected by the middle first counterweight plate 31 and the left and right two first ball sliding blocks 32.

[0072] The first counterweight plate 31 is a cuboid rigid plate with a certain weight, and the length in the axis direction of the rotating shaft 12 is one third of the length of the oil cylinder.

[0073] The first ball sliding block 32 is provided with two, which are symmetrically fixed on the left and right sides of the first counterweight plate 31 and are respectively sleeved on the two upper sliding rails 62. The first ball sliding block 32 has a ball inside, which can realize low-resistance sliding with the sliding rail. The outer side end face of the first ball sliding block 32 is a plane.

[0074] The lower sliding block 4 includes the second counterweight plate 41 and the second ball sliding block 42, and the structure of the lower sliding block 4 is the same as that of the upper sliding block 3, which is only installed on the lower sliding rail 63.

[0075] The limiting component 5 includes the limiting nut 51, which is a threaded nut with a flat bottom, and there are two, which are respectively installed on the two threaded through holes on the oil cylinder shell 61. The limiting nut 51 is deeply pressed on the end face of the upper sliding block 3 and the lower sliding block 4.

[0076] The oil cylinder assembly 6 includes the oil cylinder shell 61, which is a cuboid thin shell structure with mounting ear plates on the bottom of both sides and is fixed on the boat body. The oil cylinder shell 61 is filled with lubricating oil, and the right side wall has two threaded through holes.

[0077] The upper sliding rail 62 is a cylindrical shaft, and there are two, which are parallel to the rotating shaft 12. The upper sliding rail 62 is located in the oil cylinder shell 61, and the two ends are fixed on the oil cylinder front and rear shell bodies.

[0078] The lower sliding rail 63 has the same structure as the upper sliding rail 62. The upper sliding rail 62 and the lower sliding rail 63 are symmetrically faced about the horizontal symmetry plane of the oil cylinder shell 61.

[0079] The limiting rope 52 is a light and soft rigid rope with a length of one third of the length of the oil cylinder. One end of the limiting rope 52 is connected to the front wall of the oil cylinder, and the other end is connected to the front end face of the first counterweight plate 31 of the upper sliding block 3. The two connection points of the limiting rope 52 are at the same height and above the rotating shaft 12.

[0080] The rotating response of the wing to the roll angle is the minimum roll angle at which the sliding block overcomes the limiting of the limiting nut 51 and moves along the sliding rail, and is set by adjusting the weight of the upper and lower counterweight plates and the extrusion friction of the limiting nut 51 on the sliding block.

[0081] The rotation of the wing is responsive to the angle of roll, and the maximum allowable angle of roll of the ballast device.

[0082] In actual operation:

[0083] The device has two uses and automatically switches according to the situation, as follows:

[0084] (1) As a stabilizing wing:

[0085] Since the allowable angle of roll of the ballast device is usually large, such as 40°, the probability of large roll due to damage to the cabin is low during daily navigation, and the roll angle of the submarine will not exceed the maximum allowable angle of roll of the ballast device. Since the responsive roll angle of the device is the same as the maximum allowable angle of roll of the ballast device, the roll angle of the submarine will not exceed the responsive roll angle of the device, and the upper slide block 3 and the lower slide block 4 will not slide under the restriction of the limiting nut 51, thereby locking the rotating shaft 12, restricting its rotation, maintaining the wing plate 11 in a horizontal state, and realizing the function of a stabilizing wing.

[0086] (2) Application in emergency floating:

[0087] The device is symmetrically installed on the left and right, and has the same effect in left and right roll. This embodiment only takes right roll as an example for description.

[0088] When the submarine is in deep sea and one side of the pressure cabin is flooded, the metacentric height of the submarine decreases, and the submarine sinks rapidly with large roll.

[0089] When the roll angle of the submarine exceeds the maximum allowable angle of roll of the ballast mechanism, the ballast mechanism cannot implement ballast. Since the responsive roll angle of the wing is the same as the maximum allowable angle of roll of the ballast mechanism, the roll angle at this time is greater than the responsive roll angle of the rudder, triggering the rotation of the wing plate 11.

[0090] The specific process is as follows:

[0091] When the submarine rolls to the right, the upper slide block 3 and the lower slide block 4 in the left wing slide to the right lower side of the oil cylinder under the action of their own gravity, overcoming the restriction of the limiting nut 51, and releasing the rotation restriction on the upper shaft key 13 of the left rotating shaft 12.

[0092] Since the underwater center of gravity of the wing plate 11 is located on the axis of the rotating shaft 12, the rotation of the wing is only subject to the water power. When diving, the water flow from bottom to top impacts the wing plate 11, and the rear accumulation of the rotating shaft 12 is greater than the front, and the unbalanced sea current moment promotes the upward rotation of the trailing edge of the wing plate 11.

[0093] Because the speed of dropping is high, the hydrodynamic turning moment of the wing plate 11 is large, and the wing plate 11 has a certain weight, so a large kinetic energy is possessed before the turning stops. When the rudder is turned to the vertical state, because the tip circle diameter of the turning shaft key 13 is slightly larger than the inner height of the oil cylinder, the turning shaft key 13 is pressed on the inner wall surface of the oil cylinder to generate a friction locking force, so that the rudder angle is limited. After the turning stops, the left wing maintains the vertical state, the vertical windward area is reduced, and the rudder force disappears.

[0094] The right wing cannot move when the right sliding block 3 is limited by the limiting rope 52, and the lower sliding block 4 is limited by the limiting nut 51 and slides to the right side of the turning shaft key 13 under the action of its own gravity to release the limitation of the turning shaft key 13 to the lower turning. However, before the load is thrown, the submarine is in a high-speed diving state, and the water power promotes the unbalanced rudder trailing edge to turn upward to clamp the turning shaft key 13 on the upper sliding block 3, so that the right wing cannot be turned. Thus, the right wing maintains the horizontal state to dive.

[0095] The left wing turns to the vertical state, and the right wing is still in the horizontal state. In the dropping, the left and right wings generate an anti-rolling moment to reduce the hull roll angle.

[0096] When the submarine roll is reduced, the submarine smoothly throws the load and turns from diving to floating.

[0097] When the submarine floats, the water flows from top to bottom and washes the right wing. Because the wing plate 11 has a larger rear area than the front area, the wing plate 11 generates a water power moment of the trailing edge turning downward. After the lower sliding block 4 is removed, the turning shaft key 13 is no longer limited to turn downward. The wing plate 11 drives the turning shaft key 13 to turn downward through the turning shaft 12. Because the tip circle diameter of the turning shaft key 13 is slightly larger than the inner height of the oil cylinder, when the wing plate 11 is turned to the vertical state, the turning shaft key 13 is pressed on the bottom surface of the oil cylinder to generate a friction locking force, so that the angle of the wing plate 11 is limited.

[0098] In the whole floating process, the left and right wings of the submarine are in the locked vertical state, the floating resistance is reduced, the floating speed is improved, the attitude stability is enhanced, and the emergency anti-sinking ability is improved.

[0099] The above description is an explanation of the application, not a limitation of the application, and the scope of the application is defined in the claims. Within the protection scope of the application, any form of modification can be made.

Claims

1. A passive anti-tilt device specifically designed for emergency buoyancy, characterized in that: The system includes a hull assembly (7), with wing assemblies (1) symmetrically arranged at both ends. Each wing assembly (1) is supported by a set of spaced rudder shaft bases (2). The rudder shaft bases (2) are located inside the hull assembly (7). A hydraulic cylinder assembly (6) is installed between the two rudder shaft bases (2). A limit assembly (5) is installed on the hydraulic cylinder assembly (6). An upper slider (3) and a lower slider (4) spaced vertically are installed inside the hydraulic cylinder assembly (6). The structure of a single wing assembly (1) includes a wing plate (11), a pivot (12), and a pivot key (13). The wing plate (11) The wing plate (11) is located on the outside of the hull assembly (7), and the center of gravity of the wing plate (11) is located on the axis of the rotating shaft (12). The axis of the rotating shaft (12) is perpendicular to the longitudinal section of the hull assembly (7). The rotating shaft (12) runs through the entire hydraulic cylinder assembly (6). The bottom surface of the rotating shaft key (13) is fixed to the rotating shaft (12) in the middle section of the hydraulic cylinder assembly (6). The upper slider (3) and the lower slider (4) have the same structure. The upper slider (3) has the following structure: it includes a first counterweight plate (31) located in the middle of the hydraulic cylinder assembly (6), and a first ball slider (32) is provided on both sides of the first counterweight plate (31). The structure of the limiting component (5) is as follows: it includes a limiting nut (51) installed in the threaded through hole, the limiting nut (51) is inserted into the oil cylinder and presses against the end faces of the upper slider (3) and the lower slider (4); it also includes a limiting rope (52), one end of the limiting rope (52) is connected to the front wall of the oil cylinder shell (61) of the oil cylinder assembly (6), and the other end is connected to the front end face of the upper slider (3).

2. The passive anti-tilt device specifically designed for emergency buoyancy as described in claim 1, characterized in that: The structure of the hull assembly (7) is as follows: it includes a light outer shell (71), the interior of which is provided with multiple pressure chambers (72), and the bottom of the hull is provided with a jettison (73).

3. The passive anti-tilt device specifically designed for emergency buoyancy as described in claim 1, characterized in that: The rotating shaft (12) is a rigid cylindrical shaft.

4. The passive anti-tilt device specifically designed for emergency buoyancy as described in claim 1, characterized in that: The pivot key (13) is a rectangular rigid key with a rounded head, and the surface of the pivot key (13) has a rubber layer.

5. The passive anti-roll device for emergency buoyancy as described in claim 1, characterized in that: The thickness of the pivot key (13) is the same as the gap between the upper slider (3) and the lower slider (4).

6. The passive anti-roll device for emergency buoyancy as described in claim 1, characterized in that: The structure of the cylinder assembly (6) is as follows: it includes a cylinder shell (61), the bottom sides of the cylinder shell (61) are provided with mounting ears, the mounting ears are fixed to the hull by fasteners, the cylinder shell (61) is filled with lubricating oil, and the right side wall of the cylinder shell (61) is provided with two threaded through holes for mounting limit components (5).

7. The passive anti-roll device for emergency buoyancy as described in claim 6, characterized in that: The cylinder shell (61) adopts a rectangular thin-shell structure.

8. The passive anti-roll device for emergency buoyancy as described in claim 1, characterized in that: The limiting rope (52) is made of a lightweight and soft rigid rope.

9. The operating procedure of a passive anti-roll device for emergency buoyancy as described in claim 1, characterized in that: The process includes the following: When used as a stabilizer: The response roll angle is the same as the maximum allowable roll angle of the jettison device. The roll angle of the submarine will not exceed the response roll angle of the passive anti-roll device. The upper slider (3) and lower slider (4) cannot break through the limit nut, and the rotating shaft (12) is continuously locked to restrict rotation and maintain the wing plate (11) in a horizontal state to achieve the function of stabilizing the wing. When used as an emergency surfacing device: The passive anti-tilt device is installed symmetrically on the left and right sides, and has the same effect in left and right tilt. When a submersible sinks rapidly underwater due to a large tilt caused by caving or water ingress, if the tilt exceeds the maximum allowable tilt angle of the jettison mechanism, the jettison mechanism will be unable to jettison the load. Since the response tilt angle is the same as the maximum allowable tilt angle of the jettison device, this passive anti-tilt device will be activated at this time. At this time, the gravity-driven slider slides to overcome the limit of the limit nut, and partially releases the rotation restriction of the wing plate (11); the wing plate on the raised side turns into a vertical state and self-locks under the action of the diving current force; the wing plate (11) on the sinking side maintains a horizontal state, and the wing plates (11) on both sides generate anti-rolling hydrodynamic torque during the drop process, reducing roll and facilitating the implementation of load shedding. After jettisoning, during the ascent of the submersible, the wing plate (11) on the sinking side turns into a vertical state and locks under the action of water flow force, reducing the ascent resistance and enhancing the stability of the attitude.

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