A parachute-free airdrop device

Abstract

The present invention discloses a parachute-free airdrop device, comprising a material box and a buffer box. When the parachute-free airdrop device of the present invention is dropped into the air, the posture is adjusted by the guide mechanism at the top, so that the buffer box is at the bottom and the material box is at the top, the leaf pieces are turned over and opened, and the leaf pieces and the film are in an umbrella shape. Under the effect of air resistance, the device falls stably, and air enters the buffer box through the air filling hole at the bottom of the buffer box. The buffer box slides downward relative to the material box, and the device falls stably. The umbrella-shaped resistance surface formed by the unfolded leaf pieces and the film provides a large upward air resistance, so that the device is decelerated as a whole, thereby achieving a slower descent. When the device lands, the buffer box touches the ground first, and at this time, the buffer box slides upward relative to the material box, compressing the air in the buffer box, so that the air in the buffer box is discharged from the exhaust hole, and the energy of the impact is absorbed by compressing the air in the buffer box, so that the material in the material box is subjected to less force, thereby improving the safety of the airdrop device.

Description

Technical Field

[0001] The present invention relates to the technical field of airdrop devices and peripheral supporting facilities thereof, in particular to a parachute-free airdrop device. Background Art

[0002] In disaster relief, search and rescue of missing and trapped personnel, and emergency battlefield resupply, airdrops are often necessary due to the lack of ground access. In these situations, small items such as food, drinking water, medicine, or communication equipment often require urgent delivery. Traditional airdrop systems typically use parachutes as deceleration devices; honeycomb paper, foam plastics, and airbags are used as landing cushioning devices to reduce impact and prevent damage to supplies. Parachute airdrop systems are complex, require lengthy preparation, and are costly. When large quantities of small, low-value supplies need to be airdropped, they are often bundled together for efficient delivery. The disadvantages of this method are: 1. In complex weather and terrain conditions, landing points can deviate, making it difficult for ground personnel to access supplies. For example, when rescuing people trapped by floods or in mountainous areas, the available landing area is often limited. Dropped supplies can be washed away if they fall into the surrounding water, or difficult to retrieve if they fall into ravines, defeating the purpose of the rescue. 2. Because trapped people are clustered in confined areas, casualties often occur from being struck by airdrops. 3. Supplies can easily fall into the hands of a few individuals, leaving a large number of people, especially vulnerable groups such as the elderly, children, and women, without access to relief supplies. To avoid this, a lower-cost, simpler parachute-free airdrop system is needed, capable of dropping small items from a relatively low altitude.

[0003] Patent publication number CN103448911A discloses an ultra-low altitude delivery device, comprising a top cover and a cushioning pad connected thereto. The top cover and cushioning pad are fixed to each other by a zipper, and a fin extends outwardly in line with the outer contour of the cushioning pad. The fin is provided with an air collection hole, and a deceleration parachute is provided around it for sealing by fitting the edge. The bottom surface of the fin is provided with a shock-absorbing device. Patent publication number CN201864037U discloses a parachute-free airdrop supply device, comprising a storage bag, a wind hood, and a cushioning component. The top of the storage bag has an opening, the top of the wind hood is connected to the outer surface of the top of the storage bag, the outer surface of the wind hood is provided with multiple longitudinal reinforcement strips, each reinforcement strip is connected to the outer surface of the middle part of the storage bag, the main cushioning component is provided at the bottom of the storage bag, and the top of the storage bag is provided with a sealing component for sealing the storage bag. The patent with publication number CN208036877U discloses a low-altitude parachute-free airdrop packaging box, including a paper box and a carton for accommodating the paper box, and a pad for supporting the paper box. The paper box includes a support frame and a sleeve wrapped around the outside of the support frame. The paper box, the carton and the pad are all made of corrugated paper. The structural deformation of the corrugated cardboard is used to protect the product. The packaging container has a simple structure and a small volume, which is easy to transport and stack; the packaging method is simple and easy to open, especially in line with the requirements of low-altitude airdrops during disaster relief. The patent with publication number CN103448911A discloses a parachute-free airdrop bag for solid edible materials and a method for making it, including a main bag and an auxiliary bag placed in the main bag. The main bag includes a protective bag, a reinforcement bag and a packaging bag with the edges on both sides sewn together from the inside to the outside. The protective bag is made of polyethylene, the reinforcement bag is made of bulk bag fabric, the sealing bag is made of Oxford cloth, and the auxiliary bag is a single-layer bag made of bulk bag fabric. Both the sealing bag and the auxiliary bag have Velcro closures at their openings. The multi-layer cushioning structure effectively mitigates landing impact, enabling parachute-free airdrops of solid food. Patent Publication No. CN106742708A discloses a parachute-free airdrop bag for food used in emergency relief operations. The bag comprises an outer bag, a first inner bag, and a second inner bag. The first inner bag is positioned within the outer bag, while the second inner bag is positioned within the first inner bag. The second inner bag comprises a first and second bag areas, each with an inflatable cushion. A safety cord is attached to one corner of the outer bag, and the outer bag is equipped with a handle. The parachute-free airdrop bag provided by this invention utilizes a high-strength bulletproof fiber outer bag structure to effectively mitigate landing impact, enabling parachute-free airdrops of food. The inner bag utilizes a multi-layer, highly elastic, and highly stretchable rubber-plastic composite material structure to effectively prevent food leakage and contamination.

[0004] In summary, when airdropping a large number of small, low-value materials, a parachute-free airdrop system is often used from low or ultra-low altitudes. There are two types of commonly used parachute-free airdrop systems: one is a system without an air deceleration device, and the other is a system with an air deceleration device.

[0005] Systems without in-flight deceleration rely primarily on the airdrop container's structural components and attached cushioning materials to absorb the impact of landing. These systems offer low cost and are simple to package, transport, and deploy. However, they suffer from the high descent speed and significant landing impact, which can easily damage the supplies. Therefore, they are primarily used for airdropping lightweight and relatively indestructible supplies, such as food and solid medicines. These systems are not suitable for airdropping equipment, fragile items, or delivering supplies to dense crowds.

[0006] Systems with an airborne deceleration device incorporate a small wind shield and parachute onto the airdrop container, which decelerates during descent and, combined with an accompanying cushioning device, mitigates landing impact. These systems offer a slower descent, helping to minimize damage to supplies and injuries to personnel on the ground. However, they suffer from the small capacity of individual containers and their complex structure, making packaging, transportation, and delivery more complex when large quantities are needed.

[0007] In general, existing parachute-free airdrop technologies struggle to balance ease of use with effective deceleration and cushioning, especially when airdropping large quantities of small items. Therefore, developing a parachute-free airdrop device that balances ease of use with effective deceleration and cushioning has become a pressing challenge for those skilled in the art. Summary of the Invention

[0008] The purpose of the present invention is to provide a parachute-free airdrop device to solve the problems existing in the above-mentioned prior art, so that the parachute-free airdrop device has a simple structure, is easy to operate, and has a good deceleration and buffering effect.

[0009] To achieve the above-mentioned purpose, the present invention provides the following solution: The present invention provides a parachute-free airdrop device, comprising a material box and a buffer box, the top of the buffer box is open, and the buffer box is slidably connected to the material box, the material box can accommodate the dropped materials, the outer wall of the material box is provided with multiple pages, and the multiple pages are arranged around the outer wall of the material box, the top of the pages are rotatably connected to the material box, and the adjacent pages are connected by a film, and the film is made of a flexible material, the maximum angle between the pages and the side wall of the material box is an acute angle, the bottom of the buffer box is provided with an inflation hole, the side wall of the buffer box is provided with an exhaust hole, and the top of the material box is provided with a guide mechanism, and the guide mechanism can make the material box be located on the top of the buffer box during airdrop.

[0010] Preferably, the material box includes a storage box and a top cover, the top of the storage box is open and can accommodate airdropped materials, the top of the buffer box is open, the buffer box can be slidably mounted on the outside of the storage box, the bottom of the top cover is open, the top cover can be slidably mounted on the outside of the buffer box, the top cover can block the openings of the storage box and the buffer box, the page is arranged on the outer wall of the top cover, the side wall of the top cover is provided with an air inlet, the page can block the air inlet when it abuts against the side wall of the top cover, and a limiting mechanism is provided between the buffer box and the storage box, and between the top cover and the buffer box, and the limiting mechanism can limit the limit position of relative sliding between the buffer box and the storage box, and between the top cover and the buffer box.

[0011] Preferably, the guide mechanism is a guide umbrella or wing, and there are two winglets, which are perpendicular to each other and arranged in a cross shape, and the winglets are perpendicular to the top surface of the top cover.

[0012] Preferably, a first card block is provided at the top of the outer wall of the storage box, a second card block is provided at the bottom of the outer wall of the storage box, a third card block is provided at the top of the inner wall of the buffer box, and a fourth card block is provided at the bottom of the inner wall of the top cover. The first card block can be connected with the fourth card block, and the second card block can be connected with the third card block. The first card block, the second card block, the third card block and the fourth card block are all annular.

[0013] Preferably, the axial cross-sections of the first clamping block, the second clamping block, the third clamping block, and the fourth clamping block are all triangular.

[0014] Preferably, the sum of the side lengths of the ends of the multiple sheets connected to the top cover is equal to the circumference of the outer wall of the top cover, and the sheets are connected to the top of the side wall of the top cover through a connecting portion, and the connecting portion is made of a flexible material.

[0015] Preferably, connecting ropes are provided between the free ends of adjacent sheets and between the free ends of the sheets and the bottom side walls of the top cover. The connecting ropes are made of a flexible material and can limit the extreme positions of the free ends of the sheets.

[0016] Preferably, the number of the inflation hole is one, and the inflation hole is coaxially arranged with the buffer box. The number of the exhaust holes is multiple, and the multiple exhaust holes are evenly distributed on the side wall of the buffer box in a rectangular array. The diameter of the inflation hole is larger than the diameter of the exhaust hole. The air inlet hole is arranged at the top of the side wall of the top cover. The number of the air inlet holes is multiple, and the multiple air inlet holes are evenly distributed at equal intervals.

[0017] Preferably, auxiliary wings are further provided on the top of the material box, the auxiliary wings are L-shaped, the material box is a rectangular parallelepiped structure, and the auxiliary wings are provided at the four corners of the material box.

[0018] Preferably, a guide hole is provided on the top of the top cover, and the guide hole is coaxially arranged with the top cover.

[0019] Compared with the prior art, the present invention has achieved the following technical effects: the parachute-free airdrop device of the present invention includes a material box and a buffer box, the top of the buffer box is open, and the buffer box is slidably connected to the material box, the material box can accommodate the dropped materials, the outer wall of the material box is provided with multiple pages, the multiple pages are arranged around the outer wall of the material box, the top of the pages is rotatably connected to the material box, the adjacent pages are connected by a film, the film is made of a flexible material, the maximum angle between the pages and the side wall of the material box is an acute angle, the bottom of the buffer box is provided with an inflation hole, the side wall of the buffer box is provided with an exhaust hole, and the top of the material box is provided with a guide mechanism, which can make the material box be located on the top of the buffer box during airdrop. When the parachute-free airdrop device of the present invention is launched into the air, its posture is adjusted by a guide mechanism at the top. When the top of the material box is facing downward, the guide mechanism can tilt the entire device until the buffer box is at the bottom and the material box is at the top. Under the action of air resistance, the leaves flip and open, and the maximum opening angle is limited by the film. When fully opened, the leaves and film form an umbrella shape, and under the action of air resistance, the device falls steadily. At the same time, air enters the buffer box through the inflation hole at the bottom of the buffer box, and the buffer box slides downward relative to the material box until the relative sliding limit is reached, and the device descends steadily. The parachute-free airdrop device of the present invention relies on the umbrella-shaped resistance surface formed by the unfolded leaves and film to provide a large upward air resistance, which decelerates the entire device and achieves a slower descent speed. When the device lands, the buffer box touches the ground first. At this time, the buffer box slides upward relative to the material box, compressing the air inside the buffer box, causing the air in the buffer box to be discharged through the exhaust hole. During this process, the compressed air in the buffer box absorbs the energy of the impact, reducing the force on the material inside the material box and improving the safety of the airdrop device. The parachute-free airdrop device of the present invention uses the device itself for deceleration and buffering, and does not require a parachute or other deceleration and buffering devices, thereby reducing the complexity of packaging, transportation and delivery when dropping a large number of small items. Because it has both deceleration and buffering effects, it can effectively reduce the impact force on the items. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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.

[0021] Figure 1 It is a structural schematic diagram of the parachute-free airdrop device of the present invention in an airdrop state;

[0022] Figure 2 It is a structural schematic diagram of the storage and transportation state of the parachute-free airdrop device of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the airdrop state of the parachute-free airdrop device of the present invention;

[0024] Figure 4 This is a schematic diagram of the buffer box of the parachute-free airdrop device of the present invention when viewed from above;

[0025] Figure 5 Schematic diagram of the top cover of the parachute-free airdrop device of the present invention, viewed from the front;

[0026] Figure 6 It is a structural schematic diagram of another embodiment of the top cover of the parachute-less airdrop device of the present invention in the airdrop state;

[0027] Figure 7 It is a structural schematic diagram of another embodiment of the parachute-less airdrop device of the present invention in the airdrop state;

[0028] Among them, 1 is the top cover, 2 is the storage box, 3 is the buffer box, 4 is the wing, 5 is the leaf, 6 is the film, 7 is the inflation hole, 8 is the exhaust hole, 9 is the air inlet hole, 10 is the first card block, 11 is the second card block, 12 is the third card block, 13 is the fourth card block, 14 is the connecting rope, and 15 is the auxiliary wing. DETAILED DESCRIPTION

[0029] 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.

[0030] The purpose of the present invention is to provide a parachute-free airdrop device to solve the problems existing in the above-mentioned prior art, so that the parachute-free airdrop device has a simple structure, is easy to operate, and has a good deceleration and buffering effect.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Please refer to Figure 1-7 ,in, Figure 1This is a structural diagram of the parachute-free airdrop device of the present invention in an airdrop state. Figure 2 This is a structural diagram of the storage and transportation state of the parachute-free airdrop device of the present invention. Figure 3 This is a schematic cross-sectional view of the airdrop state of the parachute-free airdrop device of the present invention. Figure 4 This is a schematic diagram of the buffer box of the parachute-free airdrop device of the present invention when viewed from above. Figure 5 This is a schematic diagram of the front view of the top cover of the parachute-free airdrop device of the present invention. Figure 6 This is a structural schematic diagram of another embodiment of the top cover of the parachute-free airdrop device of the present invention in the airdrop state. Figure 7 It is a structural schematic diagram of another embodiment of the parachute-free airdrop device of the present invention in the airdrop state.

[0033] The present invention provides a parachute-free airdrop device, comprising a material box and a buffer box 3. The top of the buffer box 3 is open, and the buffer box 3 is slidably connected to the material box. The material box can accommodate dropped materials. The outer wall of the material box is provided with multiple leaves 5, and the multiple leaves 5 are arranged around the outer wall of the material box. The tops of the leaves 5 are rotatably connected to the material box. Adjacent leaves 5 are connected by a film 6, and the film 6 is made of a flexible material. The maximum angle between the leaves 5 and the side wall of the material box is an acute angle. The bottom of the buffer box 3 is provided with an inflation hole 7, and the side wall of the buffer box 3 is provided with an exhaust hole 8. A guide mechanism is provided on the top of the material box. During the airdrop process, the guide mechanism can make the material box face upward, and the buffer box 3 is located at the bottom of the material box.

[0034] When the parachute-free airdrop device of the present invention is dropped into the air, its posture is adjusted by the guide mechanism on the top. When the top of the material box is facing downward, the resistance provided by the guide mechanism causes the entire device to flip over until the buffer box 3 is at the bottom and the material box is at the top. Under the action of air resistance, the leaves 5 flip over and open, and the maximum opening angle is limited by the film 6. After being fully opened, the leaves 5 and the film 6 are in an umbrella shape. Under the action of air resistance, the device falls steadily. At the same time, air enters the buffer box 3 through the inflation hole 7 at the bottom of the buffer box 3. The buffer box 3 slides downward relative to the material box until the limit position of relative sliding between the two is reached, and the device descends steadily. The parachute-free airdrop device of the present invention relies on the umbrella-shaped resistance surface composed of the unfolded leaves 5 and the film 6 to provide a larger upward air resistance, so that the entire device slows down, thereby achieving a slower descent. When the device lands, the buffer box 3 touches the ground first. At this time, the buffer box 3 slides upward relative to the material box, compressing the air inside the buffer box 3 and causing the air in the buffer box 3 to be discharged through the exhaust hole 8. During this process, the air inside the buffer box 3 is compressed to absorb the energy of the impact, so that the material inside the material box is subjected to less force, thereby improving the safety of the airdrop device. The parachute-free airdrop device of the present invention uses the device itself to decelerate and cushion, without the need for a parachute or other deceleration and cushioning device. This reduces the complexity of packaging, transporting, and delivering a large number of small items. Due to the combined deceleration and cushioning effects, it can effectively reduce the impact force on the materials.

[0035] Specifically, the material box includes a storage box 2 and a top cover 1. The top of the storage box 2 is open and can accommodate airdropped materials. The top of the buffer box 3 is open, and the buffer box 3 can be slidably mounted on the outside of the storage box 2. The bottom of the top cover 1 is open, and the top cover 1 can be slidably mounted on the outside of the buffer box 3. The top cover 1 can block the openings of the storage box 2 and the buffer box 3. The leaf piece 5 is arranged on the outer wall of the top cover 1, and the air inlet hole 9 is arranged on the side wall of the top cover 1. When the leaf piece 5 abuts against the side wall of the top cover 1, the air inlet hole 9 can be blocked. A limiting mechanism is arranged between the buffer box 3 and the storage box 2, and between the top cover 1 and the buffer box 3. The limiting mechanism can limit the relative sliding limit position between the buffer box 3 and the storage box 2, and between the top cover 1 and the buffer box 3.

[0036] In this specific embodiment, the guide mechanism is a guide umbrella or wing 4, there are two wings 4, the two wings 4 are perpendicular to each other in a cross shape, and the wing 4 is perpendicular to the top surface of the top cover 1. It should be noted here that the guide umbrella is a common means used by technicians in this field, and the structure and use of the guide umbrella will not be repeated here.

[0037] When the umbrella-less airdrop device of the present invention is released into the air, it adjusts its posture by means of the top flaps 4. When the top cover 1 is at the bottom, the resistance provided by the flaps 4 causes the entire device to flip over until the storage box 2 and the buffer box 3 are at the bottom and the top cover 1 is at the top. Under the action of air resistance, the flaps 5 on the top cover 1 flip and open, with the maximum opening angle limited by the film 6. After being fully opened, the flaps 5 and the film 6 form an umbrella shape. Under the action of air resistance, the top cover 1 slides upward relative to the storage box 2. Air enters the top cover 1 through the air inlet 9, increasing the upward air resistance experienced by the top cover 1. The limiting mechanism defines the extreme relative position of the top cover 1 and the storage box 2. When the top cover 1 and the storage box 2 slide relative to each other to the extreme position, they become relatively stationary, the center of gravity of the entire device shifts downward, and the device reaches a stable descending state. Simultaneously, air enters the buffer box 3 through the air inlet 7 at the bottom of the buffer box 3, causing the buffer box 3 to slide downward relative to the storage box 2 until the relative sliding limit between the two is reached, and the device descends stably. When the device lands, the buffer box 3 touches the ground first. At this time, the buffer box 3 slides upward relative to the storage box 2, compressing the air in the buffer box 3 so that the air in the buffer box 3 is discharged from the exhaust hole 8. The storage box 2 slowly descends until it falls into the buffer box 3. In this process, the energy of the impact is absorbed by compressing the air in the buffer box 3, so that the materials in the storage box 2 are subjected to less force, thereby improving the safety of the airdrop device.

[0038] Among them, a first card block 10 is set at the top of the outer wall of the storage box 2, a second card block 11 is set at the bottom of the outer wall of the storage box 2, a third card block 12 is set at the top of the inner wall of the buffer box 3, and a fourth card block 13 is set at the bottom of the inner wall of the top cover 1. The first card block 10 can be engaged with the fourth card block 13, and the first card block 10 and the fourth card block 13 can cooperate to limit the extreme relative position of the storage box 2 and the top cover 1 to prevent the top cover 1 and the storage box 2 from slipping off. The second card block 11 can be engaged with the third card block 12, and the second card block 11 and the third card block 12 can cooperate to limit the extreme relative position of the storage box 2 and the buffer box 3 to prevent the storage box 2 and the buffer box 3 from slipping off, thereby ensuring that the parachute-free airdrop device can work normally.

[0039] In addition, the first clamping block 10 , the second clamping block 11 , the third clamping block 12 and the fourth clamping block 13 are all ring-shaped, which enhances the stability of the limiting mechanism and improves the reliability of the device.

[0040] In this specific embodiment, the first clamping block 10 , the second clamping block 11 , the third clamping block 12 and the fourth clamping block 13 are all wedge-shaped clamping blocks, and their axial cross-sections are all triangular, so the clamping is firm and reliable.

[0041] It should be noted that the sum of the side lengths of the ends of the multiple leaves 5 connected to the top cover 1 is equal to the circumference of the outer wall of the top cover 1. The multiple leaves 5 are evenly distributed on the outer wall of the top cover 1. The leaves 5 are connected to the top of the side wall of the top cover 1 through a connecting part. The connecting part is made of a flexible material. The connecting part can be deformed when the leaves 5 are flipped over. The leaves 5 are connected to the top cover 1 through the connecting part. The structure is simple, which simplifies the difficulty of producing the device.

[0042] In order to prevent the leaves 5 from flipping over in the opposite direction during the descent of the device, connecting ropes 14 are further provided between the free ends of adjacent leaves 5 and between the free ends of the leaves 5 and the bottom side walls of the top cover 1. The connecting ropes 14 are made of a flexible material. When the leaves 5 abut against the side walls of the top cover 1, the connecting ropes 14 are folded. When the leaves 5 flip over relative to the side walls of the top cover 1, the connecting ropes 14 are "stretched open". The connecting ropes 14 cooperate with the film 6 to limit the extreme position of the free ends of the leaves 5, ensuring that the leaves 5 can increase the air resistance experienced by the device, thereby further improving the reliability of the device.

[0043] More specifically, there is one inflation hole 7 and multiple exhaust holes 8. Multiple exhaust holes 8 are evenly distributed on the side wall of the buffer box 3 in a rectangular array. The diameter of the inflation hole 7 is larger than that of the exhaust hole 8. The larger diameter of the inflation hole 7 facilitates air to enter the buffer box 3, and the inflation hole 7 is coaxially arranged with the buffer box 3 to improve the uniformity of inflation. The exhaust hole 8 has a smaller diameter and is multiple in number. When the device lands, it is convenient for the storage box 2 to evenly compress the air in the buffer box 3; the air inlet hole 9 is arranged at the top of the side wall of the top cover 1. There are multiple air inlet holes 9, and the multiple air inlet holes 9 are evenly distributed at equal intervals to facilitate air to evenly enter the top cover 1.

[0044] The parachute-free airdrop device of the present invention is relatively small and needs to be stacked in a larger transport box during storage and transportation. However, the top flaps 4 of the material box are not conducive to stacking multiple devices. Therefore, auxiliary flaps 15 are also provided on the top of the material box. The auxiliary flaps 15 are L-shaped. The material box is a rectangular parallelepiped structure. The auxiliary flaps 15 are arranged at the four corners of the material box to facilitate stacking of the devices. At the same time, the auxiliary flaps 15 can also serve to protect the flaps 4. The top cover 1, storage box 2, and buffer box 3 of the parachute-free airdrop device of the present invention can be made of corrugated paper, which is low-cost and easy to mass-produce. It can also be made of biodegradable materials to reduce environmental pollution.

[0045] Furthermore, a guide hole is provided on the top of the top cover 1, and the guide hole is coaxially arranged with the top cover 1 to enhance the stability of the device when it is landing.

[0046] The transport box 1 is then pulled out of the air and the container 1 is released, and the container 1 is then released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released, and the container 1 is released At the same time, air enters the buffer box 3 through the air filling hole 7 at the bottom of the buffer box 3, and the buffer box 3 slides downward relative to the storage box 2 until the two reach the limit of relative sliding, and the device descends steadily. When the device lands, the buffer box 3 touches the ground first. At this time, the buffer box 3 slides upward relative to the storage box 2, compressing the air in the buffer box 3, causing the air in the buffer box 3 to be discharged through the exhaust hole 8. The storage box 2 slowly descends until it falls into the buffer box 3. During this process, the energy of the impact is absorbed by the compressed air in the buffer box 3, so that the materials in the storage box 2 are subjected to less force.

[0047] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A parachute-free airdrop device, characterized in that: It comprises a material box and a buffer box, the top of the buffer box is open, and the buffer box is slidably connected to the material box, the material box can accommodate the dropped materials, the outer wall of the material box is provided with a plurality of sheets, the plurality of sheets are arranged around the outer wall of the material box, the top of the sheets is rotatably connected to the material box, the adjacent sheets are connected by a film, the film is made of a flexible material, the maximum angle between the sheets and the side wall of the material box is an acute angle, the bottom of the buffer box is provided with an inflation hole, the side wall of the buffer box is provided with an exhaust hole, the top of the material box is provided with a guide mechanism, and the guide mechanism can make the material box be located at the top of the buffer box during airdrop; The material box comprises a storage box and a top cover, the top of the storage box is open and can accommodate airdropped materials, the buffer box can be slidably mounted on the outside of the storage box, the bottom of the top cover is open, the top cover can be slidably mounted on the outside of the buffer box, the top cover can block the storage box and the openings of the buffer box, the leaf sheet is arranged on the outer side wall of the top cover, the side wall of the top cover is provided with an air inlet, and the leaf sheet can block the air inlet when it abuts against the side wall of the top cover, and a limiting mechanism is arranged between the buffer box and the storage box, and between the top cover and the storage box, and the limiting mechanism can limit the relative sliding limit position between the buffer box and the storage box, and between the top cover and the storage box; the guide mechanism is a guide umbrella or wing, the number of the wing is two, the two wing sheets are perpendicular to each other and arranged in a cross shape, and the wing sheet is perpendicular to the top surface of the top cover; The sum of the side lengths of the ends of the multiple sheets connected to the top cover is equal to the circumference of the outer wall of the top cover, and the sheets are connected to the top of the side wall of the top cover through a connecting portion, and the connecting portion is made of a flexible material; connecting ropes are also arranged between the free ends of adjacent sheets and between the free ends of the sheets and the bottom side wall of the top cover, and the connecting ropes are made of a flexible material and can limit the extreme position of the free ends of the sheets.

2. The parachute-free airdrop device according to claim 1, characterized in that: A first card block is arranged at the top of the outer wall of the storage box, a second card block is arranged at the bottom of the outer wall of the storage box, a third card block is arranged at the top of the inner wall of the buffer box, and a fourth card block is arranged at the bottom of the inner wall of the top cover, the first card block can be engaged with the fourth card block, the second card block can be engaged with the third card block, and the first card block, the second card block, the third card block and the fourth card block are all annular.

3. The parachute-free airdrop device according to claim 2, characterized in that: The axial cross-sections of the first clamping block, the second clamping block, the third clamping block, and the fourth clamping block are all triangular.

4. The parachute-free airdrop device according to claim 1, characterized in that: The number of the inflation hole is one, and the inflation hole is coaxially arranged with the buffer box. The number of the exhaust holes is multiple, and the multiple exhaust holes are evenly distributed on the side wall of the buffer box in a rectangular array. The diameter of the inflation hole is larger than the diameter of the exhaust hole. The air inlet hole is arranged at the top of the side wall of the top cover. The number of the air inlet holes is multiple, and the multiple air inlet holes are evenly distributed at equal intervals.

5. The parachute-free airdrop device according to claim 1, characterized in that: Auxiliary wing pieces are also arranged on the top of the material box, and the auxiliary wing pieces are L-shaped. The material box is a rectangular parallelepiped structure, and the auxiliary wing pieces are arranged at the four corners of the material box.

6. The parachute-free airdrop device according to claim 1, characterized in that: A guide hole is arranged on the top of the top cover, and the guide hole is arranged coaxially with the top cover.

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