Umbrella-free air-drop bag

Abstract

The invention discloses a parachute-free air-drop bag, and belongs to the technical field of emergency rescue and air transportation materials, the basic material of the air-drop bag is an ultra-high molecular weight polyethylene composite material, the air-drop bag comprises a vertically placed bag body, a plurality of blast pockets are sewn on the upper portion of the outer wall of the bag body, and longitudinal braids and transverse shrouds which are arranged in a crossed mode are sewn on the outer portion of the bag body. A buffer air cushion is sewn below the bag body; the buffering air cushion is formed by combining a soft buffering cushion, a hard buffering cushion and a buffering cushion sleeve, a plurality of air inlet holes are evenly distributed in the bottom of the buffering cushion sleeve, a plurality of air outlet holes distributed circumferentially are transversely formed in the side face of the buffering cushion sleeve, and the air inlet holes and the air outlet holes are all communicated with the soft buffering cushion. The parachute-free air-drop bag provided by the invention is wear-resistant and anti-collision, not only can the accuracy of air-drop be ensured, but also air-drop materials can be effectively protected, and secondary ejection during landing collision is avoided.

Description

Technical Field

[0001] The invention relates to a parachute-free airdrop bag, belonging to the technical field of emergency rescue and aviation transportation materials. Background Art

[0002] Parachute-free airdrop, that is, airdrop without parachute, overcomes the shortcomings of road and rail transportation that cannot reach quickly and directly, and solves the problem of low efficiency of parachute airdrop support. It has many advantages such as short preparation time, simple operation, small dispersion range, and fast collection. Due to the use of parachute-free airdrop, the time of folding parachutes is saved, and the airdrop bag can be directly loaded on the aircraft to implement the airdrop mission. Parachute-free airdrop support can implement real-time support for combat equipment and supplies. Due to the direct accessibility and convenience of aircraft, the time used for parachute-free airdrop support is greatly reduced compared with cars, trains and ships, and basically realizes the simultaneous arrival of combat equipment, supplies and combat personnel.

[0003] Due to the restrictions of packaging structure design, packaging and cushioning material technology, the development of parachute-free airdrop support has been slow for many years. In recent years, with the innovation of the world's packaging concept and the development of new packaging material technology, the research and experiment of parachute-free airdrop has made great progress, and the prospect of parachute-free airdrop support being used in the battlefield has become more and more optimistic. The good development prospects have put forward more stringent requirements for parachute-free airdrop bags.

[0004] At present, the practice of parachute-free airdrop bags still has the following technical problems: The airdrop bag will roll up and down during the release process, which will not only affect the accuracy of the airdrop, but also make the airdropped materials unable to be effectively protected; When the airdrop bag hits the ground, the airdrop bag will be ejected again due to excessive pressure in the cushioning airbag at the bottom, which will not only affect the accuracy of the airdrop, but also damage the airdrop materials. Airdrop bags are restricted by existing material technology, and there is much room for improvement in their wear resistance and impact resistance.

[0005] In order to meet the needs of airdrop business, the present invention provides a wear-resistant and collision-resistant parachute-free airdrop bag. Summary of the invention

[0006] In view of the deficiencies in the background technology, the present invention provides a parachute-free airdrop bag, which is wear-resistant and collision-resistant, can not only ensure the accuracy of airdrop, but also effectively protect the airdropped materials and avoid secondary ejection when landing and colliding.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions: The basic material of the airdrop bag is ultra-high molecular weight polyethylene composite material. The airdrop bag includes a vertically placed bag body, a plurality of air scoops are sewn on the upper outer wall of the bag body, a cross-set longitudinal webbing and transverse belt are sewn on the outside of the bag body, and a cushioning air cushion is sewn under the bag body; The cushion air cushion is composed of a soft cushion, a hard cushion and a cushion cover. The bottom of the cushion cover is provided with a plurality of evenly distributed air inlet holes, and the side of the cushion cover is laterally provided with a plurality of circularly distributed air outlet holes. Both the air inlet holes and the air outlet holes are connected to the soft cushion.

[0008] Furthermore, the plurality of air blowing hoods are evenly sewn on the outer wall of the bag body along the circumference thereof, and avoidance passages are provided between adjacent air blowing hoods.

[0009] Furthermore, a cavity is provided inside the air hood, an opening is provided at the bottom of the cavity, and the size of the cavity is designed to be gradually reduced from bottom to top.

[0010] Furthermore, the transverse belt is sewn at the middle position of the bag body.

[0011] Furthermore, there are two longitudinal webbings, which are cross-connected at the bottom of the bag body, and the tops of the longitudinal webbings extend out of the bag body and are connected in pairs.

[0012] Furthermore, the soft buffer pad and the hard buffer pad are installed in the buffer pad sleeve, and the hard buffer pad is located below the soft buffer pad.

[0013] Furthermore, the exhaust hole is in a long strip structure along the longitudinal direction, and the air inlet hole is in a circular structure.

[0014] Furthermore, a Velcro is provided on the outside of the exhaust hole for sealing, the left side of the Velcro is sewn to the buffer cushion cover, and the right side of the Velcro is always kept in a movable and openable sticking state.

[0015] Furthermore, a drawstring is provided on the top of the bag body, through which the rescue supplies are put into the bag body.

[0016] After adopting the above technical solution, the present invention has the following advantages compared with the prior art: The invention fully considers the aerodynamic characteristics in the shape and structure design. A plurality of air scoops are added laterally around the middle part of the bag body. The air scoops play a directional role to prevent the bag body from turning upside down during the descent process, effectively ensuring the accuracy of airdrop and the protection of airdropped materials. The present invention arranges a buffer air cushion at the bottom of the bag body. The buffer air cushion first absorbs energy during the descent of the bag body, and when the energy of the landing collision reaches its peak, the exhaust port is opened to exhaust air outward until it is completely deflated. By using this technology, it can prevent the airdropped materials from being damaged and also avoid the problem of secondary ejection caused by excessive pressure of the buffer airbag. The basic material of the airdrop bag of the present invention is ultra-high molecular weight polyethylene. The ultra-high molecular weight polyethylene composite material has the characteristics of high wear resistance, corrosion resistance, extremely low friction coefficient, impact resistance, aging resistance, etc.; the material has ultra-high specific strength and specific modulus, and is more wear-resistant and impact-resistant than airdrop bags made of other materials on the market.

[0017] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural stereogram of the present invention; Figure 2 It is a structural stereogram of the present invention along another direction; Figure 3 It is a structural front view of the present invention; Figure 4 yes Figure 3 Schematic diagram of the cross section at AA in the middle; Figure 5 It is a bottom view of the structure of the present invention.

[0019] In the figure, 1-bag body; 2-air hood, 21-cavity, 22-opening; 3-longitudinal webbing; 4-transverse belt; 5-cushion, 51-soft cushion, 52-hard cushion, 53-cushion cover, 54-exhaust hole, 55-inlet hole; 6-avoidance channel; 7-spring hook; 8-drawn mouth. DETAILED DESCRIPTION

[0020] 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.

[0021] Example 1 like Figure 1-Figure 5 As shown together, the present invention provides a parachute-free airdrop bag. The basic material of the airdrop bag is an ultra-high molecular weight polyethylene composite material. The airdrop bag specifically includes a bag body 1, an air hood 2, a longitudinal webbing 3, a transverse belt 4 and a buffer air cushion 5. The bag body 1 is filled with basic rescue supplies.

[0022] The bag body 1 is placed vertically, a plurality of air-blowing hoods 2 are sewn on the outer wall of the bag body 1 , a cross-arranged longitudinal webbing 3 and a transverse belt 4 are sewn on the outside of the bag body 1 , and a buffer air cushion 5 is sewn below the bag body 1 .

[0023] The top of the bag body 1 is provided with a tie opening 8, through which the rescue materials are put into the bag body 1.

[0024] The plurality of air-blowing hoods 2 are uniformly sewn on the outer wall of the bag body 1 along the circumference thereof, and an escape channel 6 is provided between adjacent air-blowing hoods 2 , and the escape channel 6 is used to achieve the escape of the longitudinal webbing 3 .

[0025] The air blowing hood 2 has a cavity 21 inside, and an opening 22 at the bottom of the cavity 21 . The size of the cavity 21 is designed to be gradually reduced from bottom to top.

[0026] The air blowing hood 2 can play a directional role when the bag body 1 descends, preventing the bag body 1 from turning upside down, thereby effectively ensuring the accuracy of airdrop and the protection of airdropped materials.

[0027] The transverse belt 4 is sewn at the middle position of the bag body 1 .

[0028] The number of the longitudinal webbings 3 is preferably two, the two longitudinal webbings 3 are cross-connected at the bottom of the bag body 1, and the tops of the longitudinal webbings 3 extend out of the bag body 1 and are connected in pairs, so as to facilitate bundling and hanging with spring hooks 7.

[0029] The cushion air cushion 5 is composed of a soft cushion 51 , a hard cushion 52 and a cushion cover 53 .

[0030] The soft buffer pad 51 and the hard buffer pad 52 are installed in the buffer pad cover 53 , and the hard buffer pad 52 is located below the soft buffer pad 51 .

[0031] The bottom of the cushion cover 53 is provided with a plurality of evenly distributed air inlet holes 55 , and the side of the cushion cover 53 is laterally provided with a plurality of circumferentially distributed air outlet holes 54 . Both the air inlet holes 55 and the air outlet holes 54 are connected to the soft cushion 51 .

[0032] The exhaust hole 54 is in a long strip structure along the longitudinal direction, and the air inlet hole 55 is in a circular structure.

[0033] The exhaust hole 54 is provided with Velcro on the outside and sealed by the Velcro. The left side of the Velcro is sewn to the buffer cushion cover 53, and the right side of the Velcro is always kept in a movable and openable sticking state.

[0034] When the parachute-less airdrop bag is released and falls, gas enters the soft cushion 51 through the air inlet 55 until the soft cushion 51 is filled and gas cannot enter. When the airdrop bag touches the ground, the soft cushion 51 is squeezed. When the gas in the soft cushion 51 is compressed to a predetermined pressure or the payload reaches a predetermined overload, the Velcro is stretched open and the gas is discharged from the exhaust hole 54. At the same time, the bottom air inlet 55 also plays an auxiliary exhaust role due to the compression and extrusion of the gas, maintaining the exhaust process until the exhaust is completed.

[0035] During the implementation of this embodiment, the target point is set as the center, and the circle set with a radius of ten meters is the target area. The airdrop bag is carried by the aircraft and hovers in the air 100 meters away from the ground target area. The release is turned on and the airdrop bag lands on the ground target area. After contacting the ground target area, it is buffered once without rebound, and the straight-line distance from the target center is 4 meters. The experimental process is repeated 10 times. The bag body is not damaged, the bottom of the bag body is slightly scratched, and the materials in the airdrop bag are intact.

[0036] Comparative Example 1 The difference between Comparative Example 1 and Example 1 is that the basic material of the airdrop bag in Comparative Example 1 is polyamide fiber, while the basic material of the airdrop bag in Example 1 is ultra-high molecular weight polyethylene composite material.

[0037] During the implementation of Comparative Example 1, the target point is set as the center, and the circle set with a radius of ten meters is the target area. The airdrop bag is carried by the aircraft and hovers in the air 100 meters away from the ground target area. The release is turned on and the airdrop bag lands on the ground target area. After contacting the ground target area, it is buffered once without rebound, and the straight-line distance from the target center is 5 meters. The experimental process is repeated 10 times. The side of the bag is not damaged, the bottom of the bag is slightly damaged, and the materials in the airdrop bag are intact.

[0038] Comparative Example 2 In Comparative Example 2, the basic material of the airdrop bag is an ultra-high molecular weight polyethylene composite material. The difference between Comparative Example 2 and Example 1 is that Comparative Example 2 chooses not to add an air hood, while Example 1 adds an air hood.

[0039] During the implementation of this embodiment, the target point is set as the center, and the circle set with a radius of ten meters is the target area. The airdrop bag is carried by the aircraft and hovers in the air 100 meters away from the ground target area. It is released and rolled up and down several times during the landing process. Finally, the top of the bag touches the ground and ejects out of the target area. The basic rescue materials in the bag are damaged.

[0040] 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. Parachute-free airdrop bag, characterized by: The basic material of the airdrop bag is an ultra-high molecular weight polyethylene composite material. The airdrop bag comprises a vertically placed bag body (1). A plurality of air scoops (2) are sewn on the upper part of the outer wall of the bag body (1). A cross-arranged longitudinal webbing (3) and a transverse belt (4) are sewn on the outside of the bag body (1). A buffer air cushion (5) is sewn below the bag body (1). The buffer air cushion (5) is composed of a soft buffer pad (51), a hard buffer pad (52) and a buffer pad cover (53). The bottom of the buffer pad cover (53) is provided with a plurality of evenly distributed air inlet holes (55). The side of the buffer pad cover (53) is transversely provided with a plurality of circumferentially distributed exhaust holes (54). The air inlet holes (55) and the exhaust holes (54) are both connected to the soft buffer pad (51).

2. The parachute-free airdrop bag as claimed in claim 1, characterized in that: The plurality of air blowing pockets (2) are evenly sewn along the circumference of the bag body (1) on the upper side of the outer wall thereof, and an escape channel (6) is provided between adjacent air blowing pockets (2).

3. The parachute-free airdrop bag as claimed in claim 1, characterized in that: The air blowing hood (2) is provided with a cavity (21) inside, and an opening (22) is provided at the bottom of the cavity (21). The size of the cavity (21) is designed to be gradually reduced from bottom to top.

4. The parachute-free airdrop bag as claimed in claim 1, characterized in that: The transverse belt (4) is sewn at the middle position of the bag body (1).

5. The parachute-free airdrop bag as claimed in claim 1, characterized in that: The number of the longitudinal webbings (3) is two, the two longitudinal webbings (3) are cross-connected at the bottom of the bag body (1), and the tops of the longitudinal webbings (3) extend out of the bag body (1) and are connected in pairs.

6. The parachute-free airdrop bag as claimed in claim 1, characterized in that: The soft buffer pad (51) and the hard buffer pad (52) are installed in the buffer pad sleeve (53), and the hard buffer pad (52) is located below the soft buffer pad (51).

7. The parachute-free airdrop bag as claimed in claim 1, characterized in that: The exhaust hole (54) is in a long strip structure along the longitudinal direction, and the air inlet hole (55) is in a circular structure.

8. The parachute-free airdrop bag as claimed in claim 7, characterized in that: The exhaust hole (54) is provided with a Velcro on the outside, and is sealed by the Velcro. The left side of the Velcro is sewn onto the cushion cover (53), and the right side of the Velcro is always kept in a movable and openable adhesive state.

9. The parachute-free airdrop bag as claimed in claim 1, characterized in that: The top of the bag body (1) is provided with a tie opening (8), through which the rescue materials are placed into the bag body (1).

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