Storage and transportation launching box body suitable for air-drop parachute landing

Abstract

According to the storage and transportation launching box body suitable for air-drop parachute landing, a new structure is adopted according to new requirements, the longitudinal reinforcing beams are arranged on the lower side of the composite material square cylinder body, and the strength and rigidity under the parachute opening load can be better met. And the arrangement position of the longitudinal reinforcing beam corresponds to the position of an adapter of the air-drop parachute, so that load transmission is facilitated. And secondly, the connecting plate in the main frame adopts a double-concave structure, and the longitudinal reinforcing beam is in lap joint with the main frame, so that the longitudinal reinforcing beam and the main frame are ensured not to be interrupted and can completely participate in bearing. And finally, the longitudinal reinforcing beam adopts a U-shaped section and is internally filled with reinforcing foam. The composite material square cylinder body is made of light composite materials, meanwhile, the overall strength and rigidity are guaranteed, actual requirements are met, and the composite material square cylinder is suitable for industrial large-scale use and popularization.

Description

Technical Field

[0001] The invention belongs to the technical field of missile box-type launching, and in particular relates to a storage and transportation launching box body suitable for airdrop and parachute. Background Art

[0002] Transporting the storage and launch box containing missiles to a designated location by transport aircraft and then dropping it by parachute (referred to as airdrop and parachute landing) to carry out combat missions has become a new application scenario for missile storage, transportation and launch, and has also put forward new working conditions and index requirements for the storage and launch box.

[0003] From the perspective of working conditions, compared with the storage and transportation launch box in the current application scenario, the airdrop parachute storage and transportation launch box has added harsh working conditions such as the acceleration overload of the parachute rope on the storage and transportation launch box body when the parachute is opened, the drop impact load and acceleration overload caused by the collision of the storage and transportation launch box body with the ground when landing. These working conditions put forward new and special stiffness and strength requirements for the storage and transportation launch box body structure. From the perspective of index level requirements, since it is transported by transport aircraft, in order to be able to load more storage and transportation launch boxes and missiles, the weight of the storage and transportation launch box is required to be as small as possible, even to the point of being too harsh, so composite materials are needed.

[0004] In the prior art, the storage and transportation launch box used for airdrop and parachute generally includes a composite square tube body and an adapter. Among them, the composite square tube body is the main structure of the storage and transportation launch box, and its mass accounts for a relatively high proportion. Its configuration selection and layout optimization design seriously affect whether the storage and transportation launch box meets and achieves the above-mentioned special working conditions and technical index requirements. Since the missile weapons in the above-mentioned new application scenarios are generally small and medium-sized tactical missiles, their wings are distributed in an "X" shape, and the selection of a square cross-sectional shape of the storage and transportation launch box can make the structure more compact and convenient for joint assembly. Missile weapons generally use self-thrust to provide launch power (hot launch), and the internal pressure of the box generated during launch is relatively small. The box configuration adopts a thin-walled frame structure made of composite materials, which can not only meet the strength requirements under the action of internal pressure, but also reduce the structural mass.

[0005] For storage and transportation launch boxes used for airdrops and parachutes that use a launching beam as a support and guide, the launching beam can provide longitudinal (length direction) stiffness for the box body. If the box body adopts a thin-walled frame structure, the frame part can only use annular stiffeners, and no longitudinal stiffeners or reinforcing beams are added to meet the stiffness requirements. However, the launching beam (including guide rails), locking mechanism, etc. increase the weight of the storage and transportation launch box. Although it can meet the stiffness requirements, it cannot meet the ultra-low box-to-bullet mass ratio index; for launch boxes that use an adapter (without a launching beam) as a support and guide, there is no launching beam to strengthen the longitudinal stiffness of the box body, and the stiffness of the box body using a thin-walled frame structure cannot meet the requirements.

[0006] In summary, for new application scenarios, facing the new special working conditions for the strength and stiffness requirements of the storage and transportation launch box and the ultra-low box-to-bullet mass ratio index for the weight reduction of the storage and transportation launch box, the existing technology cannot simultaneously meet the strength, stiffness and quality requirements for the airdrop parachute storage and transportation launch box. Summary of the invention

[0007] The purpose of the present invention is to provide a storage and transportation launch box body suitable for airdrop parachute, so as to solve the problem that the prior art cannot simultaneously meet the strength, rigidity and quality requirements for the airdrop parachute storage and transportation launch box.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions to achieve the above problems:

[0009] A storage and transportation launch box suitable for airdrop parachute, comprising a square cylinder body made of composite materials; a plurality of circumferential reinforcing ribs are evenly arranged on the outer wall of the square cylinder body along the length direction, an adapter can be installed inside the square cylinder body, and a front connecting flange and a rear connecting flange are respectively arranged at the front and rear ends of the square cylinder body; it is characterized in that at least two main frames are fixedly sleeved on the square cylinder body;

[0010] The main frame is formed by the first main frame and the second main frame being detachably assembled from top to bottom; the first main frame is a "U"-shaped frame, and a positioning hole and a lifting lug are provided on the upper part of the first main frame, and the first main frame can be connected to the parachute rope of an external airdrop through its own positioning hole and lifting lug;

[0011] The second main frame comprises two fixing plates respectively connected to the lower part of the two side plates of the first main frame and a connecting plate; the connecting plate is fixedly connected to the two sides of the bottom of the two fixing plates, and the connecting plate is a double-concave structure with both sides concave in the opposite direction of the square tube body;

[0012] Two longitudinal reinforcing beams are arranged at the bottom of the square tube body along the length direction, and the longitudinal reinforcing beams are installed one by one into the grooves formed by the double concave structure of each connecting plate;

[0013] The longitudinal reinforcing beam is made of a full composite material. The cross section of the longitudinal reinforcing beam is "U"-shaped, forming a reinforcing groove extending along the length direction. The reinforcing groove is filled with reinforced foam.

[0014] The present invention also has the following features:

[0015] Furthermore, two main frames are fixedly sleeved on the square tube body; the two main frames are respectively located at the front and rear of the square tube body.

[0016] Furthermore, a plurality of main frames are fixedly sleeved on the square tube body;

[0017] The plurality of main frames are evenly distributed along the length direction of the square tube body.

[0018] Furthermore, mounting plates are provided at the lower ends of both sides of the first main frame;

[0019] The mounting plate of the first main frame is provided with a plurality of vertically penetrating mounting holes; the fixing plate of the second main frame is provided with threaded holes corresponding to the mounting holes one by one;

[0020] The mounting plate can be screwed with the threaded holes of the corresponding fixing plate through its own mounting holes, so that the first main frame and the second main frame can be disassembled and assembled up and down to form the main frame.

[0021] Furthermore, a lifting lug is connected to the first main frame of the main frame.

[0022] Furthermore, both the first main frame and the second main frame of the main frame are provided with articulated bolt connectors.

[0023] Furthermore, the front connecting flange and the rear connecting flange are all made of composite materials; metal reinforcing plates are provided on the end surfaces of the front connecting flange and the rear connecting flange;

[0024] Both the front connecting flange and the rear connecting flange are provided with articulated bolt connecting pieces.

[0025] Furthermore, a groove is provided at the position where the longitudinal reinforcing beam contacts the annular reinforcing rib; the depth of the groove of the longitudinal reinforcing beam is the same as the thickness of the annular reinforcing rib.

[0026] Compared with the prior art, the present invention has the following technical effects:

[0027] The storage and transportation launch box body suitable for airdrop parachute of the present invention adopts a new configuration to meet new requirements, and the longitudinal reinforcement beams are arranged on the lower side of the composite square tube body, which is more conducive to meeting the strength and rigidity under the parachute load. The position of the longitudinal reinforcement beam is corresponding to the position of the airdrop parachute adapter, which is convenient for load transmission.

[0028] Secondly, the connecting plate in the main frame adopts a double concave structure, which overlaps the longitudinal reinforcement beam with the main frame, ensuring that there is no interruption between the longitudinal reinforcement beam and the main frame, and can fully participate in the load-bearing. The main frame is manufactured in two sections and connected by screws. This connection method ensures the reinforcement strength and is easy to load and unload.

[0029] Finally, the longitudinal reinforcement beam adopts a U-shaped cross section and is filled with reinforced foam. According to material mechanics, the U-shaped cross section has a larger rigidity for the same cross-sectional area, and the rigidity is further enhanced by filling with foam, while the mass increase is very small; the above settings ensure the overall strength and rigidity while the composite square tube body adopts lightweight composite materials, which meets actual needs and is suitable for large-scale use and promotion in industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a storage and transportation launch box suitable for airdrop and parachute landing of the present invention;

[0031] Figure 2 It is a schematic diagram of the main frame structure in the present invention;

[0032] Figure 3 This is a schematic diagram of the connection relationship between the main frame and the longitudinal connecting beam in the present invention.

[0033] Figure 4 It is a schematic diagram of simulation analysis results when a longitudinal reinforcing beam is provided on the upper and lower sides of a composite material square tube body in one embodiment of the present invention.

[0034] Figure 5 It is a schematic diagram of simulation analysis results when two longitudinal reinforcing beams are respectively arranged on both sides of the bottom of the composite square tube body in one embodiment of the present invention.

[0035] The meanings of the numbers in the figure are as follows: 1. cylinder body; 2. annular reinforcement ribs; 3. main frame; 4. first main frame; 5. second main frame; 6. positioning hole; 7. longitudinal reinforcement beam; 8. lifting lug; 9. live bolt connector; 10. front connection flange; 11. rear connection flange; 12. metal reinforcement plate;

[0036] 401, mounting plate; 501, fixing plate; 502, connecting plate. DETAILED DESCRIPTION

[0037] It should be noted that, unless otherwise specified, all components in the present invention are components known in the prior art. For example, the composite material layer is a known and commonly used composite material layer.

[0038] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0039] like Figures 1 to 3As shown, a storage and transportation launch box suitable for airdrop parachute, comprising a composite square cylinder body 1; a plurality of annular reinforcing ribs 2 are evenly arranged on the outer wall of the composite square cylinder body 1 along the length direction; an adapter can be installed inside the composite square cylinder body 1; a front connecting flange 10 and a rear connecting flange 11 are respectively arranged at the front and rear ends of the composite square cylinder body 1; at least two main frames 3 are fixedly sleeved on the composite square cylinder body 1;

[0040] The main frame 3 is formed by the first main frame 4 and the second main frame 5 being detachably assembled from top to bottom; the first main frame 4 is a "U"-shaped frame, and a positioning hole 6 and a lifting lug 8 are provided on the upper part of the first main frame 4. The first main frame 4 can be connected to the parachute rope of the external airdrop through its own positioning hole 6 and lifting lug 8;

[0041] The second main frame 5 includes two fixed plates 501 and a connecting plate 502 respectively connected to the lower part of the two side plates of the first main frame 4; the connecting plate 502 is fixedly connected to the two sides of the bottom of the two fixed plates 501, and the connecting plate 502 is a double concave structure with both sides concave in the opposite direction of the composite square tube body 1;

[0042] Two longitudinal reinforcing beams 7 are arranged along the length direction at the bottom of the composite square tube body 1, and the longitudinal reinforcing beams 7 are installed one by one into the groove formed by the double concave structure of each connecting plate 502;

[0043] The longitudinal reinforcing beam 7 is made of a full composite material. The cross section of the longitudinal reinforcing beam 7 is "U"-shaped, forming a reinforcing groove extending along the length direction. The reinforcing groove is filled with reinforced foam.

[0044] The storage and transportation launch box body suitable for airdrop parachute of the present invention adopts a new configuration to meet new demands, and two longitudinal reinforcing beams 7 are symmetrically arranged on the lower side of the composite material square tube body 1, which is more conducive to meeting the strength and rigidity under the parachute opening load.

[0045] The number of longitudinal reinforcing beams 7 is determined according to the number of adapters, and is only arranged on the lower side of the composite square tube body 1 , running through the entire length direction of the composite square tube body 1 .

[0046] As a preferred solution, a groove is provided at the position where the longitudinal reinforcing beam 7 contacts the annular reinforcing rib 2; the depth of the groove of the longitudinal reinforcing beam 7 is the same as the thickness of the annular reinforcing rib 2, so as to facilitate the fixed connection between the longitudinal reinforcing beam 7 and the composite square tube body 1.

[0047] Among them, the longitudinal reinforcing beams 7 are symmetrically distributed on both sides of the bottom of the composite square tube body 1, and the arrangement positions of the adapter and the inner wall of the composite square tube body 1 correspond exactly to the positions where the adapter contacts the inner wall of the composite square tube body 1. The acceleration force applied by the missile body to the adapter can be directly transmitted to the longitudinal reinforcing beams 7, and the longitudinal reinforcing beams 7 and the annular reinforcing ribs 2 can be effectively exerted, thereby reducing the material consumption and the weight of the composite square tube body 1.

[0048] Secondly, the connecting plate 502 of the second main frame 5 in the main frame 3 adopts a double concave structure, overlapping the longitudinal reinforcing beam 7 and the main frame 3, ensuring that the longitudinal reinforcing beam 7 and the main frame 3 are not interrupted and can fully participate in the load-bearing.

[0049] The longitudinal reinforcing beam 7 is filled with reinforced foam. The longitudinal reinforcing beam 7 is "U"-shaped and is filled with reinforced foam. According to material mechanics, for the same cross-sectional area, the U-shaped cross-section has a larger rigidity, and the rigidity is further enhanced by filling with foam, but the increase in mass is very small. The quality is ensured to meet the requirements while the strength is enhanced. And because the longitudinal reinforcing beam adopts a U-shaped cross-section, according to material mechanics, for the same cross-sectional area, the U-shaped cross-section has a larger rigidity, and the rigidity is further enhanced by filling with foam, but the increase in mass is very small; the above arrangement ensures the overall strength and rigidity while the composite square tube body adopts lightweight composite materials, meets actual needs, and is suitable for large-scale use and promotion in industry.

[0050] Overall, the main components are made of composite materials, and the key load-bearing components are made of metal materials. Compared with the thin-walled frame structure made of metal materials, the storage and transportation launch box manufactured consumes less raw materials, is light in weight, and has low cost; compared with the thin-walled frame structure made of all-composite materials, the manufacturing process is simple, the manufacturing cycle is short, the weight is light, and the cost is low.

[0051] As a specific implementation, two main frames 3 are fixedly sleeved on the composite square tube body 1; the two main frames 3 are respectively located at the front and rear of the composite square tube body 1.

[0052] As a specific implementation method, a plurality of main frames 3 are fixedly sleeved on the composite square tube body 1;

[0053] The plurality of main frames 3 are evenly distributed along the length direction of the composite square tube body 1 .

[0054] The number of the main frames 3 can be adaptively adjusted by those skilled in the art according to actual needs, and the evenly distributed form ensures uniform overall force.

[0055] As a preferred solution, mounting plates 401 are provided at the lower ends of both sides of the first main frame 4;

[0056] The mounting plate 401 of the first main frame 4 is provided with a plurality of vertically penetrating mounting holes; the fixing plate 501 of the second main frame 5 is provided with threaded holes corresponding to the mounting holes one by one;

[0057] The mounting plate 401 can be screwed with the corresponding threaded hole of the fixing plate 501 through its own mounting hole, so that the first main frame 4 and the second main frame 5 can be detachably assembled up and down to form the main frame 3. The main frame 4 is manufactured in two sections and connected by screws. This connection method ensures the reinforcement strength and is convenient for loading and unloading.

[0058] As a preferred solution, the first main frame 4 and the second main frame 5 of the main frame 3 are both provided with movable bolt connectors 9. This arrangement is more convenient for connection when multiple ultra-low box bomb mass ratio all-composite material storage and transportation launch box bodies for airdrop parachute need to be stacked.

[0059] As a preferred solution, the front connecting flange 10 and the rear connecting flange 11 are all made of composite materials; metal reinforcing plates 12 are provided on the end surfaces of the front connecting flange 10 and the rear connecting flange 11;

[0060] Both the front connecting flange 10 and the rear connecting flange 11 are provided with a movable bolt connector 9. While strengthening the strength of the front connecting flange 10 and the rear connecting flange 11, it is further beneficial to the connection during stacking.

[0061] As a specific implementation, the following is a simulation comparison analysis of the longitudinal reinforcing beam 7 arrangement method of the present invention and the conventional longitudinal reinforcing beam 7 arrangement method:

[0062] Under the same material and size and the same load conditions, such as Figure 4 As shown, the maximum deformation of the composite square tube body 1 with a longitudinal reinforcing beam 7 arranged on the upper and lower sides of the main frame 3 is 3.5048 mm, and the maximum strain is 0.015495.

[0063] like Figure 5 As shown, the longitudinal reinforcing beam 7 of the present invention takes into account the setting mode of the adapter, and the maximum deformation of the composite square tube body 1 is 1.8276mm, and the maximum strain is 0.0095958. Compared with the former, the maximum deformation is reduced by nearly 50%, the maximum strain is reduced by nearly one order of magnitude, and the rigidity is significantly improved. Under the condition of meeting the rigidity and strength of the composite square tube body 1, the longitudinal reinforcing beam 7 and the annular reinforcing ribs 2 can be effectively exerted to reduce the weight of the box.

Claims

1. A storage and transport launch box suitable for airdrop parachute, comprising a square tube body (1) made of composite material; a plurality of annular reinforcing ribs (2) are evenly arranged on the outer wall of the square tube body (1) along the length direction; an adapter can be installed inside the square tube body (1); and a front connecting flange (10) and a rear connecting flange (11) are respectively arranged at the front and rear ends of the square tube body (1); It is characterized in that At least two main frames (3) are fixedly sleeved on the square tube body (1); The main frame (3) is formed by a first main frame (4) and a second main frame (5) which are detachably assembled from top to bottom; the first main frame (4) is a "U"-shaped frame, and a positioning hole (6) and a lifting lug (8) are provided on the upper part of the first main frame (4); the first main frame (4) can be connected to an external parachute rope through its own positioning hole (6) and lifting lug (8); The second main frame (5) comprises two fixed plates (501) respectively connected to the lower parts of the two side plates of the first main frame (4) and a connecting plate (502); the connecting plate (502) is fixedly connected to the two sides of the bottom of the two fixed plates (501), and the connecting plate (502) is a double-concave structure with both sides concave in the opposite direction of the square tube body (1); Two longitudinal reinforcing beams (7) are arranged at the bottom of the square tube body (1) along the length direction, and the longitudinal reinforcing beams (7) are installed one by one into the grooves formed by the double concave structure of each connecting plate (502); The longitudinal reinforcing beam (7) is made of a full composite material. The cross section of the longitudinal reinforcing beam (7) is "U"-shaped, forming a reinforcing groove extending along the length direction. The reinforcing groove is filled with reinforcing foam.

2. The storage and transportation launch box body suitable for airdrop and parachute according to claim 1, It is characterized in that Two main frames (3) are fixedly sleeved on the square tube body (1); the two main frames (3) are respectively located at the front and rear of the square tube body (1).

3. The storage and transportation launch box body suitable for airdrop and parachute according to claim 1, It is characterized in that A plurality of main frames (3) are fixedly sleeved on the square tube body (1); The plurality of main frames (3) are evenly distributed along the length direction of the square tube body (1).

4. The storage and transportation launch box body suitable for airdrop and parachute according to claim 1, It is characterized in that The lower ends of both sides of the first main frame (4) are provided with mounting plates (401); The mounting plate (401) of the first main frame (4) is provided with a plurality of vertically penetrating mounting holes; the fixing plate (501) of the second main frame (5) is provided with threaded holes corresponding one to one to the mounting holes; The mounting plate (401) can be screwed to the threaded hole of the corresponding fixing plate (501) through its own mounting hole, thereby allowing the first main frame (4) and the second main frame (5) to be disassembled and assembled up and down to form the main frame (3).

5. The storage and transportation launch box body suitable for airdrop and parachute according to claim 1, It is characterized in that A lifting lug (8) is connected to the first main frame (4) of the main frame (3).

6. The storage and transportation launch box body suitable for airdrop and parachute according to claim 5, It is characterized in that The first main frame (4) and the second main frame (5) of the main frame (3) are both provided with articulated bolt connectors (9).

7. The storage and transportation launch box body suitable for airdrop and parachute according to claim 6, It is characterized in that The front connecting flange (10) and the rear connecting flange (11) are both made of full composite materials; metal reinforcing plates (12) are provided on the end surfaces of the front connecting flange (10) and the rear connecting flange (11); Both the front connecting flange (10) and the rear connecting flange (11) are provided with articulated bolt connecting parts (9).

8. The storage and transport launch box body suitable for airdrop and parachute according to claim 7, It is characterized in that A groove is provided at the position where the longitudinal reinforcing beam (7) contacts the annular reinforcing rib (2); the depth of the groove of the longitudinal reinforcing beam (7) is the same as the thickness of the annular reinforcing rib (2).

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