Cushion packaging system for parachute-free air drop

Abstract

The invention discloses a cushion packaging system for parachute-free air-drop, which is characterized in that the cushion packaging system selects an ultra-high molecular weight polyethylene composite material as a basic material, is arranged below an air-drop bag body, is sewn with the air-drop bag body into a whole, and is fixed by a longitudinal reinforcing band and a transverse reinforcing band; the cushion packaging system comprises a soft cushion, a hard cushion and a cushion sleeve, the soft cushion and the hard cushion are installed in the cushion sleeve, and the hard cushion is located under the soft cushion; a plurality of air inlet holes are evenly distributed in the bottom of the cushion cover, a plurality of exhaust holes are evenly distributed in the circumference of the side face of the cushion cover, hook-and-loop fasteners in one-to-one correspondence with the exhaust holes are installed outside the exhaust holes, and the exhaust holes are sealed through the hook-and-loop fasteners. According to the buffering packaging system for the parachute-free air drop, impact energy can be effectively absorbed and dispersed, a buffered object is protected against damage, and material damage and other uncertain postures caused by bouncing can be reduced.

Description

Technical Field

[0001] The invention relates to a cushioning packaging system for parachute-free airdrop, belonging to the technical field of emergency rescue and aviation material transportation. Background Art

[0002] The use of cushioning packaging technology in parachute-free airdrop bags can effectively reduce the damage caused by impact during the airdrop process and improve the safety and integrity of the items. The use of airbags is relatively common. With its unique advantages such as light weight, good folding performance, and low cost, cushioning airbags provide an effective cushioning technology for the soft landing or recovery of high-value heavy falling objects, becoming a hot research direction with great application prospects in the field of aerospace airdrop and soft landing technology.

[0003] As early as the 20th century, the United States and the European Space Agency had successfully achieved airbag-assisted cushioning landings of space probes. However, at present, domestic research on cushioning airbags is more at the stage of theoretical research, launch tests and simulation analysis.

[0004] According to the airbag cushioning method, it can be divided into two types: closed cushioning airbags and exhaust airbags. Relatively speaking, closed cushioning airbags are very common in the market due to their simple structure, easy production and high reliability. However, when landing, the collision will cause the airbag to drive the airdropped materials to bounce several times. The bouncing and rolling make the final posture of the falling objects difficult to control. The additional device for adjusting the posture increases the complexity and quality of the system. After the initial collision, the airbag posture will be out of control. Exhaust airbags are currently a popular research direction in the field of equipment airdrop and cushioning. They have shown a series of advantages in practical applications, but there are also some technical problems, such as: 1. The internal pressure changes dramatically. During the cushioning process, the internal pressure of the exhaust airbag will drop rapidly as the gas is discharged. It is difficult to maintain the maximum pressure for a long time, and it cannot effectively absorb and disperse the impact energy to protect the cushioned object from damage. This may lead to a larger design stroke of the airbag to meet the cushioning requirements; 2. Exhaust-type airbags may rebound or tip over after cushioning, thus affecting the cushioning effect and safety.

[0005] In summary, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to propose a new type of cushioning packaging system for parachute-free airdrop to solve the bottleneck problem in the existing technology. Summary of the invention

[0006] In view of the deficiencies in the background technology, the present invention provides a cushioning packaging system for parachute-free airdrop, which can effectively absorb and disperse impact energy, protect the cushioned object from damage, and reduce damage to materials caused by bouncing and other uncertain postures.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: A cushioning packaging system for parachute-free airdrop, the cushioning packaging system uses ultra-high molecular weight polyethylene composite material as a basic material, the cushioning packaging system is placed under the airdrop bag body, sewn together with the airdrop bag body as a whole, and fixed with longitudinal reinforcement belts and transverse reinforcement belts; The cushioning packaging system comprises a soft cushion, a hard cushion and a cushion cover, wherein the soft cushion and the hard cushion are installed inside the cushion cover, and the hard cushion is located directly below the soft cushion; The bottom of the cushion cover is provided with a plurality of air inlet holes evenly distributed; the circumference of the side of the cushion cover is provided with a plurality of exhaust holes evenly distributed, and Velcro tapes corresponding to the exhaust holes are installed outside the exhaust holes, and the exhaust holes are sealed by the Velcro tapes.

[0008] Furthermore, the buffer cushion cover is in a cylindrical structure, with a cylinder bottom at the bottom and an opening at the top.

[0009] Furthermore, the exhaust hole is arranged at the periphery of the connection between the soft buffer pad and the hard buffer pad, and the exhaust hole is connected to the internal soft buffer pad.

[0010] Furthermore, the number of the exhaust holes and the air inlet holes are both four, the exhaust holes are in a rectangular structure along the longitudinal direction, and the air inlet holes are in a circular structure.

[0011] Furthermore, the left side of the Velcro is sewn onto the buffer cushion cover using wear-resistant and corrosion-resistant materials, and the right side of the Velcro is always kept in an active and openable sticking state.

[0012] Furthermore, there is a 20 mm high gap between the hard buffer pad and the bottom of the buffer pad cover.

[0013] Furthermore, the inner diameter of the buffer cushion cover is 500 mm, the height of the buffer cushion cover is 220 mm, and the thickness of the buffer cushion cover is 1 mm.

[0014] Furthermore, the size of the exhaust hole is 20×100 mm, the distance between the bottom end of the exhaust hole and the bottom end surface of the buffer cushion cover is 50 mm, and the distance between the top end of the exhaust hole and the top end surface of the buffer cushion cover is 70 mm.

[0015] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The cushioning packaging system transforms the kinetic energy of the device into the potential energy of the gas in the airbag by deforming under pressure, and discharges the gas during the compression process, thereby achieving the purpose of cushioning and deceleration. This energy conversion and release process enables the cushioning airbag to effectively absorb and disperse the impact energy, protecting the cushioned object from damage, and most of them can be released completely at one time, reducing the damage to materials caused by bouncing and other uncertain postures; The cushioning packaging system is made of ultra-high molecular weight polyethylene composite material as the basic material. The overall weight is light, easy to carry and install, and also reduces the load requirements for airdrop vehicles; The manufacturing cost of the cushioning packaging system is relatively low. At the same time, due to its simple structure, easy maintenance and use, it also reduces the overall cost of use. When not in use, it can be folded into a smaller volume for easy storage and transportation. After use, the cushioning packaging system can be used again after proper inspection and repair.

[0016] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the installation schematic diagram of the present invention; Figure 2 It is a structural stereogram of the present invention; Figure 3 yes Figure 2 Schematic diagram of the structure along another direction; Figure 4 It is a structural front view of the present invention; Figure 5 yes Figure 4 Structural cross-section view at AA in the middle; Figure 6 It is a structural stereogram of the cushion cover; Figure 7 This is a schematic diagram of the installation of Velcro.

[0018] In the figure, 1- cushion cover, 2- soft cushion, 3- hard cushion, 4- airdrop bag body, 5- exhaust hole, 6- air inlet hole, 7- Velcro. DETAILED DESCRIPTION

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described with reference to the accompanying drawings.

[0020] Example 1 like Figure 1-Figure 7As shown together, the present invention provides a cushioning packaging system for parachuteless airdrop. The cushioning packaging system uses ultra-high molecular weight polyethylene composite materials as basic materials. The cushioning packaging system is placed under the airdrop bag body 4 and is sewn together with the airdrop bag body 4 as a whole, and is fixed with longitudinal reinforcement belts and transverse reinforcement belts.

[0021] The cushioning packaging system is an exhaust type airbag structure, specifically comprising a soft cushion 2, a hard cushion 3 and a cushion cover 1.

[0022] The soft buffer pad 2 and the hard buffer pad 3 are installed inside the buffer pad cover 1, and the hard buffer pad 3 is located directly below the soft buffer pad 2, with a 20 mm high gap between the hard buffer pad 3 and the bottom of the buffer pad cover 1.

[0023] The cushion cover 1 is in a cylindrical structure, with a bottom provided at the bottom and an opening at the top.

[0024] The bottom of the cushion cover 1 is provided with a plurality of evenly distributed air inlet holes 6 , and the air inlet holes 6 are connected to the soft cushion 2 .

[0025] The cushion cover 1 has a plurality of evenly distributed exhaust holes 5 on its side circumference. The exhaust holes 5 are provided at the periphery of the connection between the soft cushion 2 and the hard cushion 3. The exhaust holes 5 are connected to the internal soft cushion 2, and the gas squeezed by contacting the ground can be exhausted to the outside through the exhaust holes 5.

[0026] The number of the air inlet holes 6 and the number of the air outlet holes 5 are both four. The air outlet holes 5 are in a rectangular structure along the longitudinal direction, and the air inlet holes 6 are in a circular structure.

[0027] The exhaust holes 5 are externally provided with Velcro 7 corresponding thereto, and the exhaust holes 5 are sealed by the Velcro 7 .

[0028] The left side of the Velcro 7 is sewn onto the cushion cover 1 with wear-resistant and corrosion-resistant materials, and the right side of the Velcro 7 is always kept in a movable and openable adhesive state. The Velcro 7 is responsible for the exhaust stroke of the parachute-free airdrop bag after it descends and touches the ground. The Velcro 7 is in a closed state when air is inhaled, and in an open state when air is exhausted.

[0029] In this embodiment, the inner diameter of the buffer cushion cover 1 is preferably 500 mm, the height of the buffer cushion cover 1 is preferably 220 mm, and the thickness of the buffer cushion cover 1 is preferably 1 mm.

[0030] In this embodiment, the size of the exhaust hole 5 is preferably 20×100 mm, the distance between the bottom end of the exhaust hole 5 and the bottom end surface of the buffer cushion cover 1 is preferably 50 mm, and the distance between the top end of the exhaust hole 5 and the top end surface of the buffer cushion cover 1 is preferably 70 mm.

[0031] The specific state of the cushioning packaging system during the action process: When the parachute-free airdrop bag is released and falls, the upward resistance of air enters the cushion through the air inlet 6 at the bottom, and the cushion is inflated until it is full of gas and cannot enter to form a cushion airbag. When it touches the ground, the gas squeeze will lift the Velcro 7 on the outside of the cushion cover 1, and the gas will be discharged from the four exhaust holes 5 on the side of the bag body to slow down the exhaust process, maintaining the exhaust process until the exhaust is completed.

[0032] During the implementation of this embodiment, the target point is set as the center, and the area within fifteen meters is the target area. The airdrop bag is carried by an aircraft and hovers in the air 100 meters away from the center of the ground target. The release is turned on, and the airdrop bag finally falls on the target area first. After contacting the ground, the hard air cushion is squeezed by force and buffered until the buffering is completed. There is no obvious bounce during the period, and the final position is still in the target area, and the straight-line distance from the target point is 4.3m. The experimental process was repeated 10 times, and all ten times fell in the target area. In nine experiments, the buffering was completed once after touching the ground without obvious bounce, and there was a slight secondary bounce once. The materials in the airdrop bag were intact. In ten landing experiments, the average straight-line distance between the final position of the airdrop bag and the target point was 4.2m. It meets the design requirements of the present invention.

[0033] Comparative Example 1 Comparative Example 1 and Example 1 use the same ultra-high molecular weight polyethylene composite material as the basic material, and the structure is made into a closed cushion airbag. The closed cushion airbag is connected to the bottom of the airdrop bag to form a whole, and is fixed with longitudinal reinforcement belts and transverse reinforcement belts.

[0034] During the implementation of Comparative Example 1, the target point is set as the center, and the area within fifteen meters is the target area. The airdrop bag is carried by an aircraft and hovers in the air 100 meters away from the center of the ground target. The release is turned on, and the airdrop bag finally falls on the target area first. After touching the ground, it starts to bounce multiple times to transfer and consume the impact energy. Finally, it bounces to a position outside the target area. After measurement, the straight-line distance between the actual stop point of the airdrop bag and the target point is 46m. The experimental process was repeated 10 times, and it did not fall into the target area ten times. The rescue materials in the airdrop bag were damaged to varying degrees. It does not meet the design requirements of the present invention.

[0035] The above is an example of the best implementation of the present invention, and the parts not described in detail are common knowledge of ordinary technicians in the field. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the present invention is also within the protection scope of the present invention.

Claims

1. A cushioning packaging system for parachute-free airdrop, characterized in that: The cushioning packaging system uses an ultra-high molecular weight polyethylene composite material as a basic material. The cushioning packaging system is placed under the airdrop bag body (4) and is sewn together with the airdrop bag body (4) as a whole, and is fixed with longitudinal reinforcement belts and transverse reinforcement belts. The cushioning packaging system comprises a soft cushion (2), a hard cushion (3) and a cushion cover (1), wherein the soft cushion (2) and the hard cushion (3) are installed inside the cushion cover (1), and the hard cushion (3) is located directly below the soft cushion (2); The bottom of the cushion cover (1) is provided with a plurality of air inlet holes (6) evenly distributed, and the circumference of the side of the cushion cover (1) is provided with a plurality of air exhaust holes (5) evenly distributed, and Velcro tapes (7) corresponding to the air exhaust holes (5) are installed outside the air exhaust holes (5), and the air exhaust holes (5) are sealed by the Velcro tapes (7).

2. A cushioning packaging system for parachute-free airdrop according to claim 1, characterized in that: The cushion sleeve (1) is in a cylindrical structure, with a bottom provided at the bottom and an opening at the top.

3. The cushioning packaging system for parachute-free airdrop according to claim 1, characterized in that: The exhaust hole (5) is provided at the periphery of the connection between the soft buffer pad (2) and the hard buffer pad (3), and the exhaust hole (5) is connected to the internal soft buffer pad (2).

4. The cushioning packaging system for parachute-free airdrop according to claim 1, characterized in that: The number of the exhaust holes (5) and the number of the air inlet holes (6) are both four; the exhaust holes (5) are in a rectangular structure along the longitudinal direction, and the air inlet holes (6) are in a circular structure.

5. The cushioning packaging system for parachute-free airdrop according to claim 1, characterized in that: The left side of the Velcro (7) is sewn onto the cushion cover (1) using wear-resistant and corrosion-resistant material, and the right side of the Velcro (7) is always kept in a movable and openable adhesive state.

6. The cushioning packaging system for parachute-free airdrop according to claim 1, characterized in that: There is a 20 mm high gap between the hard buffer pad (3) and the bottom of the buffer pad cover (1).

7. The cushioning packaging system for parachute-free airdrop according to claim 1, characterized in that: The inner diameter of the buffer cushion sleeve (1) is 500 mm, the height of the buffer cushion sleeve (1) is 220 mm, and the thickness of the buffer cushion sleeve (1) is 1 mm.

8. The cushioning packaging system for parachute-free airdrop according to claim 1, characterized in that: The size of the exhaust hole (5) is 20×100 mm, the distance between the bottom end of the exhaust hole (5) and the bottom end surface of the buffer cushion sleeve (1) is 50 mm, and the distance between the top end of the exhaust hole (5) and the top end surface of the buffer cushion sleeve (1) is 70 mm.

Images