A cross-media impact load shedding device

Abstract

The application discloses a cross-medium impact load reduction device, which comprises an elastic body, a buffer cabin, a buffer baffle, a pressure relief pipe, a water medium baffle and a limiting assembly, wherein the elastic body is used for loading articles to be protected, the buffer cabin is installed at the bottom of the elastic body to absorb impact force during cross-medium impact, the buffer baffle is slidably installed in the buffer cabin, the pressure relief pipe is connected with a pressure relief hole in the side of the buffer cabin, the water medium baffle is slidably installed in the pressure relief pipe, and the limiting assembly is used for linkage of the buffer baffle and the water medium baffle. The application absorbs instantaneous impact force through air in the air sealing cabin section, and simultaneously discharges high-pressure water in the water medium cabin section through the pressure relief pipe; after pressure relief of the water medium cabin section for multiple times, the impact force is relieved, and the impact load reduction can be realized without additional high-strength structure. The application relates to the technical field of cross-medium impact.

Description

Technical Field

[0001] This application relates to the field of cross-medium impact technology, and in particular to a cross-medium impact load reduction device. Background Technology

[0002] Transmedium impact refers to the impact force experienced by an object as it transitions from one medium to another due to the density difference between the two media. This is commonly seen when objects enter water from the air, such as air-dropped torpedoes, spacecraft recovery missions, and supercavitating torpedoes. The impact force generated during transmedium impact depends on several factors, including the density difference between the two media, the initial velocity of the object, and the object's mass.

[0003] Taking an object entering a body of water from the air as an example, during the entry process, the object's head contacts the water first, and the high-speed impact subjects the fluid on the free surface to a huge instantaneous load. The rapid load change of the fluid will feed back to the object's structure, placing high demands on the object's impact resistance. In this process, excessively high impact loads can cause structural damage and elastoplastic deformation. High-frequency vibrations under extremely high impact loads may also damage internal precision components, thus affecting the object's proper trajectory and cavitation evolution after entering the water, and consequently causing serious problems such as bouncing and sudden collapse.

[0004] Current technological solutions typically involve reinforcing the structural strength of the object's entry point into the water by stacking more rigid materials to ensure structural rigidity meets impact requirements and reduces deformation during entry. However, this undoubtedly makes the object's structure more complex and redundant, increasing its weight and hindering its lightweight design. Furthermore, heavier objects experience greater impact forces upon entry, necessitating a balance between weight and impact force, which places higher demands on the object's structural design. Therefore, a load-reduction device is currently being sought that can reduce the impact load on the object during its movement across the medium while minimizing its own weight. Summary of the Invention

[0005] The purpose of this application is to at least solve one of the technical problems existing in the prior art, and to provide a cross-medium impact load reduction device that can reduce the impact load on an object when it moves across a medium and reduce its own weight.

[0006] According to an embodiment of this application, a cross-medium impact unloading device is provided, comprising:

[0007] Projectile;

[0008] A buffer chamber, wherein a water inlet is provided at the bottom of the buffer chamber and a drain hole is provided on the side of the buffer chamber;

[0009] A buffer baffle is disposed inside the buffer chamber and opposite to the water inlet. The buffer baffle is slidable in the x-direction and divides the buffer chamber into a water medium section and an air-sealed section. The drain hole is located in the water medium section.

[0010] A pressure relief pipe, comprising a connected sealing section and a discharge section, wherein the inner diameter of the sealing section is smaller than that of the discharge section, and the sealing section is connected to the discharge hole;

[0011] A water medium baffle is disposed inside the pressure relief pipe and opposite to the discharge hole. The water medium baffle can slide in the y direction. The outer diameter of the water medium baffle is the same as the inner diameter of the sealing section and can seal the sealing section. After the water medium baffle moves to the discharge section, a gap is formed between the water medium baffle and the inner wall of the discharge section to allow water to flow through.

[0012] A limiting assembly includes a first limiting member and a second limiting member. The first limiting member is installed at the bottom of the buffer baffle and has a first inclined surface. The second limiting member is installed on the water medium baffle and has a second inclined surface. The second inclined surface is in contact with the first inclined surface and can slide relative to it. When the first inclined surface contacts the second inclined surface, the first inclined surface applies a force toward the interior of the buffer chamber to the second inclined surface.

[0013] When water flows in from the inlet, the buffer baffle is lifted and compresses the air in the airtight compartment. Simultaneously, the water medium baffle is impacted and moves from the blocking section to the discharge section, allowing water to flow into the discharge section to reduce pressure. After the water pressure drops, the buffer baffle is pressed down, and the first limiting member acts on the second limiting member, driving the water medium baffle from the discharge section to the blocking section, causing the water pressure in the water medium compartment to rise. The above steps are repeated, and the cross-medium impact force is relieved after one, two, or more depressurizations.

[0014] According to an embodiment of this application, the diameter of the water inlet is the same as the inner diameter of the buffer chamber.

[0015] According to an embodiment of this application, the buffer chamber is cylindrical and the buffer baffle is disc-shaped.

[0016] According to an embodiment of this application, the inner wall of the buffer chamber is provided with a guide groove extending in the x-direction, the buffer baffle is slidably connected to the guide groove, and the guide groove is used to suppress the rotation of the buffer baffle.

[0017] According to an embodiment of this application, a first sealing ring is further provided on the side of the buffer baffle, and the buffer baffle is in contact with the buffer chamber through the first sealing ring.

[0018] According to an embodiment of this application, the pressure relief pipe is a circular pipe, and the water medium baffle is disc-shaped.

[0019] According to an embodiment of this application, the inner wall of the pressure relief pipe is provided with a guide rail extending in the y direction, and the water medium baffle is slidably connected to the guide rail, the guide rail being used to suppress the rotation of the water medium baffle.

[0020] According to an embodiment of this application, the side of the water medium baffle is provided with a second sealing ring, and the water medium baffle is attached to the sealing section of the pressure relief pipe through the second sealing ring.

[0021] According to an embodiment of this application, a displacement adjustment mechanism is further provided between the first limiting member and the buffer baffle, the displacement adjustment mechanism being able to drive the first limiting member to move along the y direction.

[0022] According to an embodiment of this application, the displacement adjustment mechanism further includes a lead screw, a fixed block, and a slider. The fixed block is connected to the buffer baffle, the lead screw is rotatable in the fixed block, the slider is threadedly connected to the lead screw, and the first limiting member is fixed to the slider.

[0023] The beneficial effects of this application embodiment include at least the following: this application absorbs the instantaneous impact force through the air in the air-sealed compartment, while simultaneously discharging the high-pressure water in the water medium compartment through the pressure relief pipe; after multiple pressure reliefs of the water medium compartment, the impact force is alleviated, and impact load reduction can be achieved without the need for additional high-strength structures. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of this application, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0025] Figure 1 This is an exploded view of the cross-medium impact unloading device according to an embodiment of this application;

[0026] Figure 2 This is an external view of the cross-medium impact unloading device according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram of the connection of the pressure relief pipe 400 in the cross-medium impact unloading device of this application embodiment.

[0028] Reference numerals: 100-projectile body, 200-buffer compartment, 210-water inlet, 220-drain hole, 230-water medium compartment, 240-air-sealed compartment, 300-buffer baffle, 400-pressure relief pipe, 410-sealing section, 420-drain section, 500-water medium baffle, 600-limiting assembly, 610-first limiting component, 620-second limiting component. Detailed Implementation

[0029] This section will describe in detail the specific embodiments of this application. Preferred embodiments of this application are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of this application, but they should not be construed as limiting the scope of protection of this application.

[0030] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0031] In the description of this application, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0033] During the process of an object entering water, its head contacts the water first, and the high-speed impact subjects the fluid on the free surface to a huge instantaneous load. The rapid change in fluid load will be fed back to the object's structure, placing high demands on the object's impact resistance. In this process, excessively high impact loads can cause structural damage and elastoplastic deformation. High-frequency vibrations under extremely high impact loads may also damage internal precision components, thus affecting the object's proper trajectory and cavitation evolution after entering the water, and causing serious problems such as bouncing and sudden collapse.

[0034] Current technological solutions typically involve reinforcing the structural strength of the object's entry point into the water by stacking more rigid materials to ensure the structure meets impact requirements and reduces deformation during entry. However, this undoubtedly makes the object's structure more complex and redundant, and correspondingly heavier, hindering its lightweight design. Moreover, heavier objects experience greater impact forces upon entry, requiring a balance between weight and impact force, which places higher demands on the object's structural design.

[0035] Therefore, this application proposes a cross-medium impact load reduction device, which absorbs the instantaneous impact force through the air in the air-sealed compartment 240, and at the same time discharges the high-pressure water in the water medium compartment 230 through the pressure relief pipe 400; after multiple pressure reliefs of the water medium compartment 230, the impact force is relieved, and impact load reduction can be achieved without the need for additional high-strength structures.

[0036] Reference Figure 1 The cross-medium impact unloading device in this embodiment includes a projectile 100, a buffer chamber 200, a buffer baffle 300, a pressure relief pipe 400, a water medium baffle 500, and a limiting component 600. The projectile 100 is the structure for loading the object to be protected, and the buffer chamber 200 is installed at the bottom of the projectile 100. When the projectile 100 enters water, water enters the buffer chamber 200, which absorbs the cross-medium impact force.

[0037] Specifically, the buffer chamber 200 has a water inlet 210 at its bottom and a drain hole 220 on its side. A buffer baffle 300 is disposed inside the buffer chamber 200 and can slide in the x-direction. The buffer baffle 300 is opposite to the water inlet 210 and divides the buffer chamber 200 into a water medium section 230 and an air-sealed section 240. The drain hole 220 is located in the water medium section 230. Therefore, when water enters through the water inlet 210, the impact force drives the buffer baffle 300 to move, increasing the space of the water medium section 230 and decreasing the space of the air-sealed section 240, thereby compressing the air within the air-sealed section 240.

[0038] Air is 1 / 800th the density of water. As an ideal gas, it is compressible. In a confined space similar to the combustion chamber of an internal combustion engine, air can absorb energy like a spring when compressed and release energy like a spring when expanded. Therefore, it is well-suited for absorbing impact forces across media. Furthermore, compared to traditional metal springs, air does not undergo brittle fracture or plastic deformation under large impact loads, exhibiting better stability and safety, and is easy to maintain with a simple structure.

[0039] The pressure relief pipe 400 includes a connected blocking section 410 and a discharge section 420. The inner diameter of the blocking section 410 is smaller than that of the discharge section 420, and the blocking section 410 is connected to the discharge hole 220. A water medium baffle 500 is installed inside the pressure relief pipe 400, which can slide in the y-direction. The water medium baffle 500 is opposite to the discharge hole 220, and its outer diameter is the same as the inner diameter of the blocking section 410, thus blocking the blocking section 410. After the water medium baffle 500 moves to the discharge section 420, a gap is formed between the water medium baffle 500 and the inner wall of the discharge section 420, allowing water to flow through. After water enters from the inlet 210, the space inside the water medium compartment 230 is gradually filled, and the water drives the water medium baffle 500 to move from the blocking section 410 to the discharge section 420. After the water medium baffle 500 moves to the discharge section 420, water flows out from the gap between the water medium baffle 500 and the inner wall of the discharge section 420, thereby depressurizing the water medium chamber 230.

[0040] The pressure relief pipe 400 is housed within the projectile body 100 to reduce the impact of external forces. A drain outlet is provided on the side of the projectile body 100, and the end of the pressure relief pipe 400 connects to this outlet, allowing water to be discharged back to the outside. To prevent backflow of external water through the drain outlet, a one-way valve is installed at the outlet, allowing water to flow only from the buffer chamber 200 to the outside.

[0041] Reference Figure 2 The limiting assembly 600 includes a first limiting member 610 and a second limiting member 620, used to link the buffer baffle 300 and the water medium baffle 500 together. The first limiting member 610 is installed at the bottom of the buffer baffle 300 and has a first inclined surface; the second limiting member 620 is installed on the water medium baffle 500 and has a second inclined surface. The second inclined surface is in contact with the first inclined surface and can slide relative to it. It is worth noting that when the first inclined surface contacts the second inclined surface, the first inclined surface applies a force towards the interior of the buffer chamber 200 to the second inclined surface.

[0042] The working principle of this cross-medium impact decompression device is as follows: When water flows in from the inlet 210, the buffer baffle 300 is lifted, compressing the air in the air-sealed compartment 240. Simultaneously, the water medium baffle 500 is impacted and moves from the sealing section 410 to the discharge section 420, allowing water to flow into the discharge section 420 to reduce pressure. After the water pressure drops, the compressed air drives the buffer baffle 300 to move, causing it to press down. The first limiting member 610 acts on the second limiting member 620, driving the water medium baffle 500 from the discharge section 420 to the sealing section 410, increasing the water pressure in the water medium compartment 230. This process is repeated, and the cross-medium impact force is relieved after one, two, or more decompression cycles.

[0043] Reference Figure 3 Furthermore, the diameter of the inlet 210 is the same as the inner diameter of the buffer chamber 200, thereby ensuring that the instantaneous impact force during water entry can directly act on the buffer baffle 300.

[0044] Furthermore, the buffer chamber 200 is cylindrical, and the buffer baffle 300 is disc-shaped, making the force on the buffer baffle 300 more even. A guide groove extending in the x-direction is formed on the inner wall of the buffer chamber 200, and the buffer baffle 300 is slidably connected to the guide groove, which is used to suppress the rotation of the buffer baffle 300. To prevent air leakage within the airtight compartment 240, a first sealing ring is fitted onto the side of the buffer baffle 300, and the buffer baffle 300 is in contact with the buffer chamber 200 through the first sealing ring, thereby improving the sealing performance of the airtight compartment 240.

[0045] Furthermore, the pressure relief pipe 400 is a circular pipe, and the water medium baffle 500 is disc-shaped, making the force on the water medium baffle 500 more uniform. A guide rail extending in the y-direction is provided on the inner wall of the pressure relief pipe 400, and the water medium baffle 500 is slidably connected to the guide rail, which is used to suppress the rotation of the water medium baffle 500. To prevent water from leaking out of the water medium chamber section 230 when the water medium baffle 500 is in the sealing section 410, a second sealing ring is provided on the side of the water medium baffle 500, and the water medium baffle 500 is in contact with the sealing section 410 of the pressure relief pipe 400 through the second sealing ring.

[0046] Furthermore, a displacement adjustment mechanism is provided between the first limiting member 610 and the buffer baffle 300. The displacement adjustment mechanism can drive the first limiting member 610 to move along the y-direction, thereby adjusting the contact position between the first limiting member 610 and the second limiting member 620. Specifically, in some embodiments, the first limiting member 610 and the buffer baffle 300 are connected by bolts, and the contact position between the first limiting member 610 and the second limiting member 620 is adjusted by adjusting the installation position of the first limiting member 610. In other embodiments, the displacement adjustment mechanism includes a fixing block and a set screw. The fixing block is connected to the buffer baffle 300, and the set screw is threaded to the fixing block, with its end able to abut against the first limiting member 610, thereby driving the first limiting member 610 to adjust its position along the y-direction by turning the set screw.

[0047] In this embodiment, the displacement adjustment mechanism includes a lead screw, a fixed block, and a slider. The fixed block is connected to the buffer baffle 300, the lead screw can rotate within the fixed block, the slider is threadedly connected to the lead screw, and the first limiting member 610 is fixed to the slider. By turning the lead screw, the first limiting member 610 can be driven to adjust its position along the y-direction.

[0048] The above is a detailed description of the preferred embodiments of this application. However, the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this application. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A cross-medium impact unloading device, characterized in that, include: Projectile (100); A buffer chamber (200) is provided with a water inlet (210) at the bottom and a drain hole (220) at the side. A buffer baffle (300) is disposed inside the buffer chamber (200) and opposite to the water inlet (210). The buffer baffle (300) is slidable in the x-direction. The buffer baffle (300) divides the buffer chamber (200) into a water medium section (230) and an air-sealed section (240). The drain hole (220) is located in the water medium section (230). A pressure relief pipe (400) includes a plugging section (410) and a draining section (420) that are connected to each other. The inner diameter of the plugging section (410) is smaller than that of the draining section (420). The plugging section (410) is connected to the draining hole (220). A water medium baffle (500) is disposed inside the pressure relief pipe (400) and opposite to the discharge hole (220). The water medium baffle (500) can slide in the y direction. The outer diameter of the water medium baffle (500) is the same as the inner diameter of the blocking section (410) and can block the blocking section (410). After the water medium baffle (500) moves to the discharge section (420), a gap that allows water to flow through will be formed between the water medium baffle (500) and the inner wall of the discharge section (420). A limiting component (600) includes a first limiting member (610) and a second limiting member (620). The first limiting member (610) is installed at the bottom of the buffer baffle (300) and has a first inclined surface. The second limiting member (620) is installed on the water medium baffle (500) and has a second inclined surface. The second inclined surface is in contact with the first inclined surface and can slide relative to it. When the first inclined surface contacts the second inclined surface, the first inclined surface applies a force toward the interior of the buffer chamber (200) to the second inclined surface. When water flows in from the inlet (210), the buffer baffle (300) is lifted and compresses the air in the airtight compartment (240). At the same time, the water medium baffle (500) is impacted and moves from the blocking section (410) to the discharge section (420), and the water flows into the discharge section (420) to reduce the pressure. After the water pressure drops, the buffer baffle (300) is pressed down, and the first limiting member (610) acts on the second limiting member (620), driving the water medium baffle (500) to move from the discharge section (420) to the blocking section (410), and the water pressure in the water medium compartment (230) rises. The above steps are repeated, and the cross-medium impact force is relieved after one, two or more depressurizations.

2. The cross-medium impact unloading device according to claim 1, characterized in that: The diameter of the inlet (210) is the same as the inner diameter of the buffer chamber (200).

3. The cross-medium impact unloading device according to claim 1, characterized in that: The buffer chamber (200) is cylindrical, and the buffer baffle (300) is disc-shaped.

4. The cross-medium impact unloading device according to claim 3, characterized in that: The inner wall of the buffer chamber (200) is provided with a guide groove extending in the x direction. The buffer baffle (300) is slidably connected to the guide groove, and the guide groove is used to suppress the rotation of the buffer baffle (300).

5. The cross-medium impact unloading device according to claim 1, characterized in that: The buffer baffle (300) is fitted with a first sealing ring on its side, and the buffer baffle (300) is in contact with the buffer chamber (200) through the first sealing ring.

6. The cross-medium impact unloading device according to claim 1, characterized in that: The pressure relief pipe (400) is a round pipe, and the water medium baffle (500) is disc-shaped.

7. The cross-medium impact unloading device according to claim 6, characterized in that: The inner wall of the pressure relief pipe (400) is provided with a guide rail extending in the y direction. The water medium baffle (500) is slidably connected to the guide rail, and the guide rail is used to suppress the rotation of the water medium baffle (500).

8. The cross-medium impact unloading device according to claim 1, characterized in that: The water medium baffle (500) is provided with a second sealing ring on its side, and the water medium baffle (500) is attached to the sealing section (410) of the pressure relief pipe (400) through the second sealing ring.

9. The cross-medium impact unloading device according to claim 1, characterized in that: A displacement adjustment mechanism is provided between the first limiting member (610) and the buffer baffle (300), and the displacement adjustment mechanism can drive the first limiting member (610) to move along the y direction.

10. The cross-medium impact unloading device according to claim 9, characterized in that: The displacement adjustment mechanism includes a lead screw, a fixed block, and a slider. The fixed block is connected to the buffer baffle (300). The lead screw can rotate in the fixed block. The slider is threadedly connected to the lead screw. The first limiting member (610) is fixed to the slider.

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