High-speed impact protection device

Abstract

The present invention relates to the technical field of high-altitude drop protection devices, and discloses a high-speed impact protection device, including a counterweight assembly, the counterweight assembly including a shell and an energy-absorbing medium filled in the shell; a cylinder assembly, the cylinder assembly is connected to the end of the counterweight assembly, a protection assembly is arranged in the cylinder assembly, the cylinder assembly includes a cylinder, a support unit connected to the inside of the cylinder, and a locking member providing a locking force for fixing the protective shell, a fluid medium is filled between the cylinder and the support unit, the support unit is provided with a stop surface for blocking the fluid medium, and the locking member is provided at one end of the cylinder body. The protection assembly includes an object and a protective shell, and the object is placed in the protective shell. The fluid medium and the support unit are provided, and after the impact, the protective shell squeezes the fluid medium, and the fluid medium pushes the support unit to slide in the buffer chamber, using the principle of liquid static pressure transmission to convert kinetic energy into other energy to reduce the impact force on the object.

Description

Technical Field

[0001] The present invention relates to the technical field of high-altitude drop protection devices, and more specifically, to a high-speed impact protection device. Background Art

[0002] With the development of aerospace technology, humans are gradually moving beyond Earth and into space, and the connection between high-altitude needs and ground-based activities will also become closer. The process of collecting samples and returning them to the ground is very complicated. If a safe high-altitude drop method is used, it will save a lot of manpower and material resources.

[0003] Existing deceleration devices for dropping items from high altitude to the ground are mostly parachutes, which utilize air resistance to convert kinetic energy into other energies. Their purpose is to reduce the speed at which weapons and equipment impact the ground, water, or other structures, minimizing the overload on the equipment and preventing damage. However, parachutes have a large area after opening in mid-air and a slow descent speed, making them easily identified and tracked by the enemy. The development of protective devices that can be deployed quickly and with high concealment is an inevitable requirement for future development. Using the principle of hydrostatic pressure transfer, the kinetic energy of a high-speed descent can be converted into other energies to protect items within the device. However, a review of publicly available information has yet to reveal any design methods that utilize the hydrostatic pressure transfer principle to achieve the goal of reducing overload and protecting weapons, equipment, and other items.

[0004] Therefore, how to use the principle of liquid static pressure transmission to convert the kinetic energy of high-speed landing into other energy to achieve protection of protective items becomes a problem that needs to be solved. Summary of the Invention

[0005] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a high-speed impact protection device. By setting a fluid medium and a support unit, after the device hits the ground at high speed, the protective shell can break free from the locking force of the locking part and squeeze the fluid medium. The fluid medium pushes the support unit to slide in the buffer cavity, and uses the principle of liquid static pressure transmission to convert kinetic energy into other energy to reduce the impact force on the object.

[0006] A high-speed impact protection device includes a counterweight assembly, which includes a shell and an energy-absorbing medium filled inside the shell; a cylinder assembly, which is connected to the end of the counterweight assembly, and a protective assembly is arranged inside the cylinder assembly, which includes a cylinder, a support unit connected to the inside of the cylinder, and a locking member that provides a locking force for fixing the protective shell, a fluid medium is filled between the cylinder and the support unit, and the support unit is provided with a stop surface for blocking the fluid medium, and a locking member is arranged at one end of the cylinder protective assembly, and the protective assembly includes an object and a protective shell, and the object is placed in the protective shell.

[0007] Furthermore, the support unit includes a pressure support frame and a piston, the pressure support frame is in contact with the fluid medium, the piston is arranged on the side of the pressure support frame away from the fluid medium, the pressure support frame and the piston are both annular structures, and the protective shell is inserted into the interior of the cylinder body through the center hole of the piston.

[0008] Furthermore, the pressure support frame is provided with a plurality of one-way switches in the circumference thereof, a limit strip is provided on one side of the one-way switch, and the one side of the one-way switch and the pressure support frame in contact with the fluid medium constitute a stop surface.

[0009] Furthermore, a buffer cavity is formed between the outer wall of the protective shell and the inner wall of the cylinder body, and one end of the protective shell is in contact with the fluid medium.

[0010] Furthermore, the side of the piston in contact with the fluid medium serves as a stop surface for preventing the fluid medium from flowing toward the buffer chamber.

[0011] Furthermore, a sliding support member is fixed to the end of the protective shell, and the sliding support member is fixed to the inside of the cylinder through the locking member.

[0012] Furthermore, a fixed support member is fixed to the end of the protective shell through a locking member, and the fixed support member is fixedly connected to the inner wall of the cylinder.

[0013] Furthermore, sealant is applied to the gaps between the protective shell, the pressure support frame and the piston.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] ① An energy-absorbing medium is provided between the shell and the cylinder. After the device hits the ground, the shell and the energy-absorbing medium convert part of the kinetic energy into the internal energy of the energy-absorbing medium, thus providing the first protection for the object.

[0016] ② This device uses the principle of hydraulic buffering. When the protective shell hits the ground or other equipment at high speed, its speed suddenly decreases due to resistance. The protective shell in the cylinder gets rid of the locking force of the locking part under the action of inertia, slides forward at high speed to squeeze the fluid medium, and the volume of the fluid medium decreases and the pressure increases, causing the fluid medium to break through the stop surface of the support unit and then push the piston or directly push the piston, causing the piston to slide on the inner wall of the cylinder. At the same time, the protective shell receives the reaction force and viscosity of the fluid medium to reduce its speed, realizing the conversion of kinetic energy into pressure energy and internal energy, so that the speed is reduced to within the range of the allowable impact speed of the object. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram before the collision in Example 1.

[0019] Figure 2 It is a schematic diagram after the collision in Example 1.

[0020] Figure 3 This is a schematic diagram before the collision in the second embodiment.

[0021] Figure 4 It is a schematic diagram of the collision process in Example 2.

[0022] Figure 5 It is a schematic diagram after the collision in the second embodiment.

[0023] Figure 6 This is a structural diagram of the pressure support frame in Example 1.

[0024] Figure 7 This is a schematic structural diagram of the pressure support frame in another state in Example 1.

[0025] In the figure: 1. Shell; 2. Energy-absorbing medium; 3. Cylinder; 4. Fluid medium; 5. Pressure support frame; 6. Piston; 7. Protective shell; 8. Object; 9. Buffer chamber; 10. Locking part; 11. Sliding support part; 12. Fixed support part; 13. One-way switch; 14. Limit strip. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Specific embodiment one:

[0028] See also Figure 1 and Figure 2 A high-speed impact protection device includes a counterweight assembly and a cylinder assembly. The counterweight assembly is installed at the front end of the cylinder assembly, and a protection assembly is arranged in the cylinder assembly.

[0029] The counterweight assembly includes a shell 1 and an energy-absorbing medium 2 filled inside the shell 1. The shell 1 is set to be spherical or conical in this embodiment, but is not limited to the above shapes. The material of the shell 1 in this embodiment is metal or non-metal, and is characterized in that the front end is thickened or weighted so that the shell 1 plays the role of a counterweight, which can lead the end of the shell 1 to the ground under the action of gravity. The shell 1 is fixed to the cylinder assembly by a threaded connection; the energy-absorbing medium 2 in this embodiment is made of elastic energy-absorbing rubber material, but is not limited to rubber material. Kinetic energy can be converted into potential energy through the energy-absorbing medium 2. The energy-absorbing medium 2 is set inside the shell 1 and located at the front end of the cylinder assembly. When the device hits the ground, since the shell 1 plays the role of a counterweight, under the action of gravity, the shell 1 lands on the ground. After impacting the ground, under the kinetic energy of high-speed landing, the shell 1 ruptures, and the energy-absorbing medium 2 squeezes and diffuses into the cylinder assembly and covers the cylinder assembly along the walls on all sides. The energy-absorbing medium 2 absorbs kinetic energy and converts the kinetic energy into potential energy storage, which provides the first protection and buffering for the cylinder assembly.

[0030] The protective assembly includes a protective shell 7 and an item 8. The item 8 is placed in the protective shell 7, and the protective shell 7 is arranged inside the cylinder assembly. In this embodiment, the shape, quality, material and function of the item 8 are not restricted, and the applicability is wide. The matching relationship between the item 8 and the protective shell 7 is not restricted, and can be achieved by foam filling, liquid casting, solid twisting or threaded connection, with strong applicability.

[0031] The cylinder assembly includes a cylinder 3, a support unit and a locking member 10. The cylinder 3 is connected to the shell 1 by a thread. When it hits the ground, the shell 1 breaks, and the energy-absorbing medium 2 in the shell 1 squeezes the front end surface of the cylinder 3 and spreads along the four sides to cover the cylinder 3. A support unit is provided in the cylinder 3, and the support unit includes a pressure support frame 5 and a piston 6. In this embodiment, the pressure support frame 5 is a coaxial circular ring steel frame structure with a certain thickness, but is not limited to a circular ring structure. The outer circular surface of the pressure support frame 5 contacts the inner wall surface of the cylinder 3. The pressure support frame 5 is fixed to the inner wall surface of the cylinder 3 by welding or threaded connection. Please refer to Figure 6 and Figure 7, there are several one-way switches 13 distributed circumferentially on the annular surface of the pressure support frame 5, which play a sealing role. A limit strip 14 is set above one side of the one-way switch 13 to limit the rotation direction of the one-way switch 13; a fluid medium 4 is set in the cylinder body 3, and the fluid medium 4 is selected from water, fuel oil or engine oil. Its characteristic is that it is quickly transmitted in all directions when subjected to pressure load. The fluid medium 4 is located between the front end of the cylinder body 3 and the pressure support frame 5. The side of the pressure support frame 5 in contact with the fluid medium 4 constitutes a stop surface with the one-way switch 13, which plays a role in blocking the fluid medium 4. The limit strip 14 is set on the side opposite to the stop surface. It is worth noting that the one-way switch 13 adopts a door structure in this embodiment, but is not limited to the door structure. It can also be a paper-like material with a certain strength bonded to the pressure support frame 5 to achieve control of the fluid medium inside the pressure support frame 5. 4 is sealed, and the one-way switch 13 structure is the existing technology. The structure of the one-way switch 13 will not be described in detail here. Before the device hits the ground, the one-way switch 13 and one side of the pressure support frame 5 form a stop surface to block the fluid medium 4. After the device hits the ground, the fluid medium 4 is squeezed and the pressure applied to it increases. Under a certain pressure, the fluid medium 4 can open or flush the one-way switch 13, breaking through the limiting effect of the limit bar 14. During the flow of the fluid medium 4, it plays a buffering role for the protective shell 7 and the article 8; a piston 6 is provided on the side of the pressure support frame 5 away from the fluid medium 4. In this embodiment, the piston 6 is set to a circular ring structure with an opening in the middle. The piston 6 plays a role in further sealing the fluid medium 4. At the same time, the piston 6 has smooth sliding properties. The piston 6 is slidably connected to the inner wall of the cylinder body 3. The piston 6 contacts the pressure support frame 5 to prevent leakage of the flowing medium.

[0032] The protective shell 7 is inserted into the cylinder body 3 through the central opening of the piston 6 and the pressure support frame 5. One end of the protective shell 7 is in contact with the fluid medium 4. Sealant is applied between the protective shell 7, the pressure support frame 5 and the piston 6. In this embodiment, the sealant is beeswax. Before the device hits the ground, the protective shell 7, the pressure support frame 5 and the piston 6 seal the flowing medium; the inner circular surface of the pressure support frame 5 and the inner circular surface of the piston 6 are both slidably connected to the outer wall of the protective shell 7, and the pressure support frame 5 and the piston 6 also support the protective shell 7.

[0033] A buffer chamber 9 is formed between the outer wall of the protective shell 7 and the inner wall of the cylinder 3. A sliding support 11 is threadedly connected to the end of the protective shell 7. The sliding support 11 is used to seal the fluid medium 4. The sliding support 11 is a cylindrical shape with a central opening in this embodiment, but is not limited to a cylindrical shape with a central opening. The sliding support 11 is sleeved on the outer surface of the protective shell 7. The shape of the sliding support 11 is adapted to the shape of the protective shell 7. It is characterized in that it is adapted to the piston 6, has a smooth outer wall, and can slide on the inner wall of the cylinder 3. The sliding support 11 is made of metal material in this embodiment, but is not limited to Limited to metal materials; a locking piece 10 is provided at the end of the cylinder body 3. In this embodiment, the locking piece 10 is a threaded structure, but is not limited to a threaded structure. It can also be a mechanical twisted structure or a snap ring structure. The locking piece 10 provides a locking force to fix the sliding support 11 through a thread. The locking piece 10 adopts a structure that can provide a locking force in the prior art. It is not a technical point in this device, so no unnecessary details are given in this device. The locking piece 10 can be fixed to the end of the cylinder body 3 and can also fix the sliding support 11. The locking force between the locking piece 10 and the sliding support 11 is less than the locking piece 10. The fixing force of the locking member 10 is fixed to the end of the cylinder body 3. When the device hits the ground, the protective shell 7 moves forward under the inertia of kinetic energy, destroying the locking force and moving forward together with the sliding support member 11. Since the locking force is less than the fixing force, the locking member 10 is still fixed to the end of the cylinder body 3. The sliding support member 11, the protective shell 7 and the object 8 are freed from the locking member 10 and move forward under the action of inertia. In the process of the protective shell 7 moving forward, the fluid medium 4 is squeezed, the volume of the fluid medium 4 decreases and the pressure increases. Under the action of pressure, the fluid medium 4 opens the one-way switch and destroys the pressure support frame 5. The fluid medium 4 flows out of the one-way switch, pushing the piston 6 to slide along the buffer chamber 9. The kinetic energy of the protective shell 7 and the object 8 is dispersed to the inner surface of the cylinder 3 and the outer surface of the protective shell 7 through the static pressure transmission principle. In the process of the protective shell 7 and the sliding support 11 moving forward, the fluid medium 4 that breaks the one-way switch and flows into the buffer chamber 9 generates pressure on the sliding support 11. The fluid medium 4 blocks the sliding support 11, preventing the sliding support 11, the protective shell 7 and the object 8 from moving forward, thereby slowing down the speed of the protective shell 7 and protecting the object 8.

[0034] A circuit board and a control panel electrically connected to the circuit board are provided in the protective shell 7. The circuit board and the control panel enable the device to generate various types of electrical signals after landing, such as sine waves, square waves, pulses and other signals, which are convenient for handheld devices to receive and locate.

[0035] In this embodiment, the device has a cylindrical shape. When dropped from a high altitude, it has low resistance, high speed, good concealment, and is sturdy and reliable. A counterweight assembly is fixedly connected to the front end of the cylinder 3. When the gravity guide device of the shell 1 lands on the ground, the end of the shell 1 faces the ground. The energy-absorbing medium 2 in the shell 1 absorbs part of the kinetic energy and converts it into elastic potential energy, which is diffused and coated along the outer surface of the cylinder 3, completing the initial protection of the object 8. A fluid medium 4 is provided in the cylinder 3. Before the impact, the fluid medium 4 is sealed between the cylinder 3 and the pressure support frame 5 and the protective shell 7. After hitting the ground, the protective shell 7 and the object 8 move forward under inertia, driving the sliding support 11 fixed to the end of the protective shell 7 to move forward together. The sliding support 11 gets rid of the locking force of the locking member 10 and slides forward along the inner wall of the cylinder 3 to protect the object 8. The front end of the shell 7 squeezes the fluid medium 4, and the pressure of the fluid medium 4 increases. Under the action of pressure, the fluid medium 4 rushes open the one-way switch, and the fluid medium 4 flows along the buffer chamber 9 to the sliding support 11. The sliding support 11 blocks the fluid medium 4. At the same time, the force of the fluid medium 4 flowing backward is blocked by the sliding support 11, which gives the sliding support 11 a reverse force, preventing the sliding support 11 and the protective shell 7 and the items 8 in the protective shell 7 from moving forward. Reverse thinking uses the principle of liquid static pressure transmission to quickly transfer the large kinetic energy of high-speed moving objects to the wall, effectively solving the protection problem of items 8 under high-speed impact, and can be used to protect weapons and equipment and other items 8 when they impact the ground at high speed, especially solving the problem of explosive penetration stability.

[0036] Working principle: When the device hits the ground at high speed, the shell 1 has a gravity guiding effect, the shell 1 touches the ground, and the energy-absorbing medium 2 absorbs kinetic energy and is squeezed and diffused along the front end of the cylinder 3 to cover the outer surface of the cylinder 3, playing the first protective role for the object 8; after being hit, the protective shell 7 and the object 8 move forward under the action of inertia, and the sliding support 11 breaks away from the locking force of the locking member 10 and moves forward together with the protective shell 7, and the fluid medium 4 at the front end of the protective shell 7 is squeezed, the volume of the fluid medium 4 decreases and the pressure of the fluid medium 4 increases, and the pressure of the fluid medium 4 increases to the safety of the protective shell 7 and the object 8. When the load is permitted, the one-way switch of the pressure support frame 5 is opened by the pressure of the fluid medium 4, and the fluid medium 4 pushes the piston 6 to move backward along the buffer chamber 9 to the sliding support 11. The sliding support 11 seals the fluid medium 4 and blocks the fluid medium 4. The impact of the fluid medium 4 blocks the sliding support 11, the protective shell 7 and the object 8 from moving forward, realizing the conversion of kinetic energy into pressure energy and internal energy, and distributing the kinetic energy to the outer surface of the protective shell 7 and the sliding support 11 through the principle of liquid static pressure transmission, thereby completing the protection of the object 8. Specific embodiment two:

[0038] See also Figure 3-Figure 5The difference between this embodiment and the first embodiment is that: the supporting unit includes a piston 6, and a piston 6 is provided at the front end of the protective shell 7. The piston 6 is slidably connected to the inner wall of the cylinder 3. The piston 6 supports the protective shell 7. The fluid medium 4 is provided at the front end of the piston 6 and the cylinder 3. The side of the piston 6 in contact with the fluid medium 4 is a stop surface, which blocks the fluid medium 4 and prevents the fluid medium 4 from leaking before the device hits the ground; the contact area between the piston 6, the protective shell 7 and the cylinder 3 is coated with sealant. In this embodiment, the sealant is beeswax, which completes the sealing of the fluid medium 4.

[0039] The difference between this embodiment and the first embodiment is that: a fixed support 12 is provided at the end of the cylinder body 3, and the fixed support 12 is connected to the protective shell 7 through the locking force of the locking member 10. In this embodiment, the locking member 10 is connected to the end of the protective shell 7 by a thread, and the locking member 10 is fixed to the inner wall of the fixed support 12 by welding. The fixed support 12 is fixed to the inner wall surface of the end of the cylinder body 3 by a thread. The locking force formed by the thread between the locking member 10 and the protective shell 7 is less than the fixing force between the locking member 10 and the fixed support 12 by welding. Therefore, the protective shell 7 can get rid of the locking force under the action of inertia, while the locking member 10 is still fixed on the fixed support 12.

[0040] When the device hits the ground at a high altitude, the shell 1 touches the ground, and the energy-absorbing medium 2 is squeezed and diffused along the outer surface of the cylinder 3, completing the initial protection of the object 8. Under the action of inertia, the protective shell 7 and the object 8 break free from the locking force of the locking member 10 and move forward. The fluid medium 4 is squeezed, the volume decreases and the pressure increases. When the pressure of the fluid medium 4 increases to a level greater than the friction between the piston 6 and the walls of the cylinder 3 on both sides, the fluid medium 4 pushes the piston 6 to move backward along the buffer chamber 9 and fills the entire space of the cylinder 3, surrounding the protective shell 7. The kinetic energy is distributed to the outer surface of the protective shell 7 through the principle of liquid static pressure transmission, thereby bearing the high-speed impact.

[0041] In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] The embodiments described above are merely descriptions of preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by persons skilled in the art should fall within the scope of protection defined by the claims of the present invention.

Claims

1. A high-speed impact protection device, characterized in that: include: A counterweight assembly, comprising a shell (1) and an energy-absorbing medium (2) filled inside the shell (1); A cylinder assembly, the cylinder assembly is connected to the end of the counterweight assembly, a protective assembly is provided in the cylinder assembly, the cylinder assembly includes a cylinder (3), a support unit connected to the inside of the cylinder (3), and a locking member (10) providing a locking force for fixing the protective assembly, a fluid medium (4) is filled between the cylinder (3) and the support unit, the support unit is provided with a stop surface for blocking the fluid medium (4), the locking member (10) is provided at one end of the cylinder (3), the protective assembly includes an article (8) and a protective shell (7), the article (8) is placed in the protective shell (7); The support unit comprises a pressure support frame (5) and a piston (6), wherein the pressure support frame (5) is in contact with the fluid medium (4), and the piston (6) is arranged on a side of the pressure support frame (5) away from the fluid medium (4), and the pressure support frame (5) and the piston (6) are both annular structures, and the protective shell (7) is inserted into the interior of the cylinder body (3) through the center hole of the piston (6); The pressure support frame (5) is provided with a plurality of one-way switches (13) in the circumferential direction, and a limit strip (14) is provided on one side of the one-way switch (13). The one-way switch (13) and the side of the pressure support frame (5) in contact with the fluid medium (4) form a stop surface; A buffer chamber (9) is formed between the outer wall of the protective shell (7) and the inner wall of the cylinder body (3), and one end of the protective shell (7) is in contact with the fluid medium (4); The side of the piston (6) in contact with the fluid medium (4) serves as a stop surface for preventing the fluid medium (4) from flowing toward the buffer chamber (9).

2. The high-speed impact protection device according to claim 1, characterized in that: A sliding support member (11) is fixed to the end of the protective shell (7), and the sliding support member (11) is fixed inside the cylinder body (3) via the locking member (10).

3. The high-speed impact protection device according to claim 1, characterized in that: A fixed support member (12) is fixed to the end of the protective shell (7) via a locking member (10), and the fixed support member (12) is fixedly connected to the inner wall of the cylinder body (3).

4. The high-speed impact protection device according to claim 1, characterized in that: Sealant is applied to the gaps between the protective shell (7), the pressure support frame (5) and the piston (6).

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