CN107934203B - Air drop tank - Google Patents

Abstract

An air drop tank belongs to the technical field of material air drop. The plastic tank comprises a tank body which is formed by plastic in a one-time inflation mode and is provided with a tank inner wall and a tank outer wall, wherein a buffer cavity is formed between the tank inner wall and the tank outer wall, the side walls of the tank inner wall and the tank outer wall are all in a corrugated shape with a spring trend, a tank neck is contracted at the upper part of the tank inner wall and the tank outer wall, a tank mouth is arranged at the central position of the tank neck, the width of the buffer cavity gradually narrows from the bottom of the buffer cavity to the direction of the tank neck, and when the buffer cavity reaches the position of the tank neck, the buffer cavity disappears due to the closing of the tank inner wall and the tank outer wall at the position of the tank neck, and a buffer layer is arranged in the buffer cavity; and the tank mouth cover is matched with the tank mouth. The good buffering and vibration reduction effects are reflected, the service life of the tank body is prolonged, the repeated use rate is improved, and the convenience in use is reflected; is beneficial to convenient manufacture and shows good economy; the use is safe; the stability of throwing and landing is ensured, and the convenience in use is ensured.

Description

Air drop tank

Technical Field

The utility model belongs to the technical field of material air drop, and particularly relates to an air drop tank.

Background

The air drop refers to throwing the aircraft over the ground to the ground, wherein the materials include liquid and small particles, the liquid includes water, oil, disinfectant, etc., the small particles include rice, millet, sorghum rice, corn, bean, etc., and the oil includes edible oil or fuel oil, etc.

As is known in the art, air drop tanks provide ground forces with various materials not limited to those listed above during combat, but also to delivery to disaster areas due to the obstruction of roads (including bridges) during even combat, particularly during special events such as earthquakes, floods, etc. From this, the air drop tank can be used for military purposes as well as civil purposes.

Technical information of various air drop containers is seen in the published chinese patent literature, typically "air drop containers" as recommended by the utility model patent application publication No. CN101596969a and "liquid-type edible material air drop structures" provided by the utility model patent publication No. CN 204713715U. The former consists of a rubber container base and a jacket (called as an inflatable protection interlayer) which is positioned outside the container and made of rubber, wherein a container opening is formed on the container base, and an inflation opening is formed on the jacket. Although the technical effects described in the specification of the patent scheme can be reflected to a certain extent (see the last two sections of thepage 2 of the specification), the following defects exist: firstly, the buffer function of the container chamber serving as the liner can be achieved by inflating the inflatable protection interlayer, so that the use is inconvenient; secondly, once the inflatable protection interlayer is punctured, the fuel in the container chamber is discharged by rolling with a vehicle (pages 17-18 of the specification), so that the mode is difficult to be adopted in actual use, and the condition of the vehicle is not generally provided in an air drop place; thirdly, once the charging connector is damaged, the whole air drop container is scrapped, so that the reasonable frequency of repeated use is difficult to ensure; fourth, the production is troublesome, and thus the production is not suitable for industrialized mass production.

CN204713715U has the technical effects described in paragraph 0014 of the specification, but is relatively cumbersome to use because the air-drop bag filled with the liquid needs to be placed in the outer bag when in use. In addition, since the inside of the outer bag is sequentially formed with an XPE material layer having a thickness of 25mm, an XPE material layer having a thickness of 20mm, an oil-resistant rubber layer, and the like from the outer bag inward (paragraph 0022 of the specification), the structure is complicated.

In view of the above prior art, there is a need for improvements, for which the applicant has devised an active and beneficial design which forms the technical solution to be described below and which proves to be viable by computer simulation deduction tests with security measures.

Disclosure of Invention

The utility model aims to provide an air-drop tank which is beneficial to exerting an ideal self-vibration reduction buffer effect, prolonging the service life of the tank body, improving the repeated use rate, discarding the air inflation in an interlayer, realizing the convenience in use, remarkably simplifying the structure, facilitating the manufacture, realizing good cheapness and facilitating the discharge of the inflation gas in the tank body cavity to the outside, avoiding the tank body from cracking and ensuring the safety in the air-drop process.

The utility model is based on the task of completing the air drop tank, comprising a tank body which is formed by plastic in a one-time inflation mode and is provided with a tank inner wall and a tank outer wall, wherein a buffer cavity is formed between the tank inner wall and the tank outer wall, the tank inner wall and the tank outer wall are corrugated in a spring trend and are contracted at the upper part to form a tank neck, a tank mouth communicated with a tank cavity of the tank body is formed at the central position of the tank neck, the width of the buffer cavity gradually narrows from the bottom of the buffer cavity towards the direction of the tank neck, and when the buffer cavity reaches the position of the tank neck, the buffer cavity is closed at the position of the tank neck by the tank inner wall and the tank outer wall, and a buffer layer is arranged in the buffer cavity; and the tank mouth cover is matched with the tank mouth.

In a specific embodiment of the present utility model, the center of gravity of the tank is lowered by the diameter of the middle part of the tank body cavity in the height direction being larger than the diameter of the lower part and the diameter of the lower part being larger than the diameter of the upper part so that the tank is in a natural standing state.

In another specific embodiment of the utility model, the outer wall of the tank nozzle is provided with tank nozzle external threads, and the inner wall of the tank nozzle cover is provided with tank nozzle cover internal threads which are matched with the tank nozzle external threads.

In still another specific embodiment of the present utility model, a tank cavity expansion gas outlet pipe hole is formed on the tank nozzle, the upper end of the tank cavity expansion gas outlet pipe hole is communicated with the outside at a position corresponding to the external thread of the tank nozzle, the lower end of the tank cavity expansion gas outlet pipe hole is communicated with the tank cavity and is inserted with an exhaust pipe, a gas-permeable and liquid-impermeable pipe is arranged on the exhaust pipe, and gas-permeable and liquid-impermeable micropores are arranged on the gas-permeable and liquid-impermeable pipe.

In a further specific embodiment of the utility model, a can mouth internal thread for temporarily coupling a can mouth is formed on an inner wall of the can mouth.

In yet another specific embodiment of the present utility model, a can lid gasket is disposed within the can lid and seals the can lid to the upper surface of the can mouth.

In a further specific embodiment of the utility model, the material of the inner and outer tank walls is high molecular weight high density polyethylene (hmwhpe); the buffer layer is made of polyurethane foam materials.

In a further specific embodiment of the utility model, parachute line perforations are formed in the can end and around the peripheral edge of the can end.

In yet a further specific embodiment of the utility model, a self-expanding wing mechanism is provided on the outer wall of the can body.

In yet another specific embodiment of the present utility model, the self-expanding wing mechanism includes a wing bead and a set of wings, the wing bead being sleeved on the outer wall of the can, the set of wings being circumferentially distributed around the wing bead and each being formed with a pair of wing ears at an upper end of the set of wings, the pair of wing ears being threaded on the wing bead, and a lower end of the set of wings being each formed as a free end.

The utility model has the technical effects that one of the technical effects is that the inner wall of the tank body and the side wall of the outer wall of the tank are in the form of the folds with the trend of the spring, and the buffer layer is arranged in the buffer cavity, so that good buffer and vibration reduction effects can be reflected when the tank body is thrown to the ground at high altitude and reaches the ground, the service life of the tank body is prolonged, the repeated use rate is improved, and the tank body is not required to be inflated to the buffer cavity like the prior art, so that the convenience in use is reflected; thirdly, the whole structure is concise, so that the manufacturing is convenient, and good economical efficiency is realized; fourthly, because the inner wall and the outer wall of the tank are in a fold shape, and because the tank mouth is provided with the tank body cavity expansion gas exhaust pipe hole, the occurrence of the situation that the tank body is damaged due to the thermal expansion of the gas in the tank wall body cavity is conveniently avoided, and the safety in use is reflected; fifthly, the gravity center of the tank body is low, so that a natural vertical state can be realized, and the stability and the convenience in use during throwing and landing are ensured.

Drawings

Fig. 1 is a structural view of a first embodiment of the present utility model.

Fig. 2 is a cross-sectional view of fig. 1.

Fig. 3 is an enlarged view of the can end lid shown in fig. 1 and 2 mated with the can end.

Fig. 4 is a schematic view of the temporary filling nozzle when introducing liquid into the tank cavity.

Fig. 5 is a structural diagram of a second embodiment of the present utility model.

Fig. 6 is a structural view of a third embodiment of the present utility model.

Fig. 7 is a detailed structural view of the self-wing mechanism shown in fig. 6.

Fig. 8 is a cross-sectional view of fig. 6.

Fig. 9 is a state diagram of the utility model in the air drop inembodiment 3.

Detailed Description

Example 1:

referring to fig. 1 to 3, there is shown a can body 1 having a can inner wall 11 and a canouter wall 12 and having a buffer chamber 13 formed between the can inner wall 11 and the canouter wall 12 by a blow molding die of a plastic blow molding machine, wherein the can inner wall 11 and the side wall of the canouter wall 12 are formed in a corrugated (also referred to as "corrugated") shape having a spring tendency (also referred to as "spring effect") and are shrunk in an upper portion to form acan neck 14, acan mouth 141 which is formed in a central position of thecan neck 14 and is extended upward to be communicated with acan body cavity 15 of the can body 1 is formed, the width of the buffer chamber 13 is gradually narrowed from the bottom of the buffer chamber 13 toward the direction of thecan neck 14 and disappears by closing the can inner wall 11 and the canouter wall 12 at the position of thecan neck 14, that is, the buffer chamber 13 does not exist at the position of thecan neck 14, and abuffer layer 131 is provided in the buffer chamber 13; acan mouth cover 2, thecan mouth cover 2 is matched with thecan mouth 141.

As can be seen from the illustrations of fig. 1 and 2, the center of gravity of the tank 1 is lowered to a state where the tank is naturally erected by the fact that the diameter of the middle portion in the height direction of thetank cavity 15 is larger than the diameter of the lower portion and the diameter of the lower portion is larger than the diameter of the upper portion. This structure gives substantially the entire can 1 the characteristics of a tumbler.

As shown in fig. 1 to 3, a can mouthmale screw 1411 is formed on the outer wall of thecan mouth 141, and a can mouthfemale screw 21 is formed on the inner wall of thecan mouth cap 2, and the can mouthfemale screw 21 is engaged with the can mouthmale screw 1411.

With continued reference to fig. 1 to 3, a tank cavityexpansion gas outlet 1412 is formed in thetank nozzle 141, the upper end of the tank cavityexpansion gas outlet 1412 is connected to the outside at a position corresponding to the tank nozzleexternal screw 1411, the lower end of the tank cavityexpansion gas outlet 1412 is connected to thetank cavity 15 and is inserted with anexhaust pipe 14121, a gas-permeable liquid-impermeable pipe 14122 is provided in theexhaust pipe 14121, and gas-permeable liquid-impermeable pores 14123 are provided in the gas-permeable liquid-impermeable pipe 14122.

A can mouthfemale screw 1413 for temporarily coupling the can mouth 3 (shown in fig. 4) is formed on the inner wall of thecan mouth 141.

Preferably, a canlid gasket 22 is provided in thecan lid 2, and thecan lid 2 is sealed with the upper surface of thecan mouth 141 by the can lidgasket 22.

In this embodiment, the materials of the inner wall 11 and theouter wall 12 are high molecular weight high density polyethylene (hmwhpe); thebuffer layer 131 is made of polyurethane foam.

Referring to fig. 4, afilling nozzle 3 is shown in fig. 4, and when liquid such as water, oil, etc. is introduced into thetank cavity 15, in order to reliably connect the pipe connected to the water source, oil source, etc. with thetank nozzle 141, theexternal thread 31 of thefilling nozzle 3 may be screwed with theinternal thread 1413 of the tank nozzle, the pipe may be inserted into thefilling nozzle 3, thefilling nozzle 3 may be removed after filling, and thefilling nozzle 3 may be retained on thetank nozzle 141 after the pipe is removed.

After the aircraft is dropped to the destination, the disaster relief material in thetank cavity 15 can be taken out by only opening thetank nozzle cover 2 and manually tilting thetank 14.

Example 2:

referring to fig. 5, a parachute line perforation 23 is formed on themouth cover 2 and around the peripheral edge of themouth cover 2. In this structure, a parachute (not shown) may be connected to themouth cap 2, and in general, a parachute is not required when the can 1 is delivered to the ground at a height of about 200m, but a parachute may be used when the can 1 is delivered to the ground at a height of 200m or more. The remainder is the same as described for example 1.

Example 3:

referring to fig. 6 to 9, a self-expandingwing mechanism 4 is provided on theouter wall 12 of the can body 1, the self-expandingwing mechanism 4 includes awing bead 41 and a set ofwings 42, thewing bead 41 is sleeved on theouter wall 12, the set ofwings 42 are distributed around the circumference of thewing bead 41, a pair ofwing ears 421 is respectively formed at the upper ends of the set ofwings 42, the pair ofwing ears 421 is penetrated on thewing bead 41, and the lower ends of the set ofwings 42 are respectively formed as free ends.

Although two self-expandingwing mechanisms 4 are shown in thisembodiment 3, one may be used, and thus the present utility model cannot be limited by the number change of the self-expandingwing mechanisms 4.

In the air drop, since the upper ends of the group offins 42 are connected to thefin bead ring 41 and the lower ends are formed as free ends, the wings can be automatically unfolded by the air, and the state is shown in fig. 9. The remainder is the same as described for example 1.

In summary, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the task of the utility model, and faithfully honors the technical effects carried by the applicant in the technical effect column above.

Claims (5)

1. An air drop tank is characterized by comprising a tank body (1) which is formed by plastic in a one-step inflation mode and is provided with a tank inner wall (11) and a tank outer wall (12), a buffer cavity (13) is formed between the tank inner wall (11) and the tank outer wall (12), the tank inner wall (11) and the tank outer wall (12) are corrugated and form a tank neck (14) in a spring trend, the upper part of the tank inner wall is contracted, a tank mouth (141) communicated with a tank cavity (15) of the tank body (1) is formed at the central position of the tank neck (14), the width of the buffer cavity (13) gradually narrows from the bottom of the buffer cavity (13) towards the tank neck (14), and when the buffer cavity reaches the position of the tank neck (14), the buffer cavity (13) is closed at the position of the tank neck (14) by the tank inner wall (11) and the tank outer wall (12), and a buffer layer (131) is arranged in the buffer cavity (13); a can mouth cover (2), the can mouth cover (2) is matched with the can mouth (141); a tank mouth external thread (1411) is formed on the outer wall of the tank mouth (141), a tank mouth cover internal thread (21) is formed on the inner wall of the tank mouth cover (2), and the tank mouth cover internal thread (21) is matched with the tank mouth external thread (1411); a tank body cavity expansion gas outer exhaust pipe hole (1412) is formed on the tank nozzle (141), the upper end of the tank body cavity expansion gas outer exhaust pipe hole (1412) is communicated with the outside at a position corresponding to the tank nozzle outer thread (1411), the lower end of the tank body cavity expansion gas outer exhaust pipe hole (1412) is communicated with the tank body cavity (15) and is inserted with an exhaust pipe (14121), a ventilation liquid-proof pipe (14122) is arranged on the exhaust pipe (14121), and ventilation liquid-proof micropores (14123) are formed on the ventilation liquid-proof pipe (14122); a parachute rope perforation (23) is formed on the tank nozzle cover (2) and surrounds the peripheral edge part of the tank nozzle cover (2); a self-expanding wing mechanism (4) is arranged on the outer wall (12) of the tank body (1); the self-expanding wing mechanism (4) comprises a wing steel wire ring (41) and a group of wings (42), wherein the wing steel wire ring (41) is sleeved on the outer wall (12) of the tank, the wings (42) are distributed around the circumferential direction of the wing steel wire ring (41), a pair of wing lugs (421) are respectively formed at the upper ends of the wings (42), the pair of wing lugs (421) penetrate through the wing steel wire ring (41), and the lower ends of the wings (42) are respectively formed into free ends.

2. Air drop tank according to claim 1, characterized in that the center of gravity of the tank body (1) is lowered by the diameter of the middle part in the height direction of the tank body cavity (15) being larger than the diameter of the lower part and the diameter of the lower part being larger than the diameter of the upper part so that the tank body is in a natural standing state.

3. Air drop tank according to claim 1, characterized in that on the inner wall of the tank mouth (141) is formed a tank mouth internal thread (1413) for temporarily coupling with a filling mouth (3).

4. Air drop tank according to claim 1, characterized in that a tank mouth cover gasket (22) is provided in the tank mouth cover (2), and the tank mouth cover (2) is sealed with the upper surface of the tank mouth (141) by the tank mouth cover gasket (22).

5. The air drop tank according to claim 4, wherein the material of the inner wall (11) and the outer wall (12) is high molecular weight high density polyethylene; the buffer layer (131) is made of polyurethane foaming materials.

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