Pressure-resistant structure of square launch canister

Abstract

The utility model relates to the technical field of launch canisters, in particular to a pressure-resistant structure of a square launch canister. According to the technical scheme, the pipe comprises a pipe body, the pipe body comprises a winding inner shell and a winding outer shell, the winding inner shell is sleeved with the winding outer shell, and prefabricated reinforcing corner fittings are arranged between the four corners of the winding inner shell and the winding outer shell. Through the prefabricated reinforcing corner fittings, the upper and lower side balsa wood sandwich and the left and right side balsa wood sandwich and winding inner shell mounting and connecting structures, the defect that the tension of the straight edge of the square winding pipeline is insufficient is overcome, the structural rigidity of the pipe body in the internal pressure bearing state is improved, and the purpose of controlling deformation of the rectangular pipe body is achieved; by means of an inverted pulling structure of the rear metal connector and the advantage of high tension of winding forming, the connecting strength of the rear metal connector and the pipe body is improved, and the technical requirement for resisting instant high impact force when the pipe body is used is met; by prefabricating the reinforcing corner fittings, the rigidity of four corner areas of the pipeline is improved, and the purpose of controlling deformation of the pipe body is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of launch tubes, in particular to a pressure-resistant structure of a square launch tube. Background Technique

[0002] The tube-launched loitering munition is an intelligent and portable weapon system, which is the organic combination of unmanned aerial vehicle technology, ammunition technology and launch technology. It can be transported by individual soldiers, teams, infantry fighting vehicles or other public railway transports, ship platforms to the front line against the enemy. After being placed at the designated angle at the station (platform), the loitering munition is launched, and it can perform multiple tasks such as loitering flight, communication relay, enemy situation reconnaissance, target indication, air alert and precise strike on targets such as enemy armor, tanks, fortifications and personnel in the enemy's depth area. The launch tube not only has to undertake the launch task, but also plays a long-term protection role for the equipment during storage and transportation. Therefore, the requirements for the stability and reliability of the launch tube are relatively high.

[0003] In the prior art, the launch uses the instantaneous explosion pressure generated by a gas generator to push the loitering munition out. During this process, a relatively high internal pressure will be generated inside the launch tube, resulting in deformation inside the tube, affecting the internal sealing effect and movement effect of the tube. Content of the Utility Model

[0004] The purpose of the utility model is to propose a pressure-resistant structure of a square launch tube aiming at the problems existing in the background technique.

[0005] To achieve this purpose, the utility model adopts the following technical solutions: A pressure-resistant structure of a square launch tube, including a tube body. The tube body includes a wound inner shell and a wound outer shell. The wound outer shell is sleeved outside the wound inner shell. Prefabricated strengthening corner pieces are arranged between the four corners of the wound inner shell and the wound outer shell. Upper and lower side balsa wood sandwiches are filled between the upper and lower outer walls of the wound inner shell and the upper and lower inner walls of the wound outer shell. Left and right side balsa wood sandwiches are filled between the left and right outer walls of the wound inner shell and the left and right inner walls of the wound outer shell. A rear metal joint is arranged on the inner wall of one end of the wound inner shell. An anterior carbon fiber preform is arranged at one end of the wound inner shell far from the rear metal joint. A hinged connecting plate is arranged on the anterior carbon fiber preform. A window connecting piece is arranged on the wound inner shell. A window cover plate is arranged on the window connecting piece. A sealing gasket is arranged inside the window connecting piece.

[0006] Preferably, a plurality of inverted cone-shaped buckles are processed on the outer surface of the rear metal joint.

[0007] Preferably, the outer surface of the anterior carbon fiber preform is processed into a reverse draw port shape.

[0008] Preferably, epoxy glue is filled between the prefabricated strengthening corner pieces, the upper and lower side balsa wood sandwiches, the left and right side balsa wood sandwiches and the wound inner shell.

[0009] Preferably, the prefabricated reinforcing corner pieces are made of carbon fiber material or high-strength steel.

[0010] Preferably, the upper and lower balsa wood sandwiches and the left and right balsa wood sandwiches are made of balsa wood and can be replaced with PMI or foams of the same density.

[0011] Advantages of the present utility model:

[0012] 1. By means of the installation and connection structure of the prefabricated reinforcing corner pieces, the upper and lower balsa wood sandwiches and the left and right balsa wood sandwiches with the winding inner shell, the present utility model improves the insufficient straight-edge tension of the square winding pipe, enhances the structural rigidity of the pipe body under the internal pressure state, and achieves the purpose of controlling the deformation of the rectangular pipe body.

[0013] 2. Through the reverse-pulling structure of the rear metal joint, the present utility model utilizes the high-tension advantage of winding molding to improve the connection strength between the rear metal joint and the pipe body, meeting the technical requirements for the pipe body to resist instantaneous high impact forces during use.

[0014] 3. By means of the prefabricated reinforcing corner pieces, the present utility model improves the rigidity of the four corner regions of the pipe, achieving the purpose of controlling the deformation of the pipe body. Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of an embodiment of the pressure-resistant structure of a square launching tube of the present utility model;

[0016] Figure 2 is the overall structural sectional view of an embodiment of the pressure-resistant structure of a square launching tube of the present utility model;

[0017] Figure 3 is the sectional view taken along line A-A in an embodiment of the pressure-resistant structure of a square launching tube of the present utility model Figure 1 ;

[0018] Figure 4 is the enlarged overall structural view of part A in an embodiment of the pressure-resistant structure of a square launching tube of the present utility model Figure 2 .

[0019] Reference numerals: 1, winding inner shell; 2, prefabricated reinforcing corner piece; 3, upper and lower balsa wood sandwiches; 4, left and right balsa wood sandwiches; 5, winding outer shell; 6, rear metal joint; 7, window connecting piece; 71, window cover plate; 8, front carbon fiber prefabricated part; 9, sealing gasket; 10, hinged connecting plate. Detailed Embodiment

[0020] The following further describes the present utility model in detail with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model rather than all the structures are shown in the drawings.

[0021] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "above and to the right", and "on the top" of the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below and to the left", and "under the bottom" of the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0023] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0024] Embodiment 1

[0025] As Figures 1-4As shown in the figure, a pressure-resistant structure of a square launch tube proposed by the present utility model includes a tube body. The tube body includes a wound inner shell 1 and a wound outer shell 5. The wound outer shell 5 is sleeved on the periphery of the wound inner shell 1. Prefabricated strengthening corner members 2 are provided between the four corners of the wound inner shell 1 and the wound outer shell 5. Upper and lower side balsa wood sandwiches 3 are filled between the upper and lower outer walls of the wound inner shell 1 and the upper and lower inner walls of the wound outer shell 5. Left and right side balsa wood sandwiches 4 are filled between the left and right outer walls of the wound inner shell 1 and the left and right inner walls of the wound outer shell 5. A rear metal joint 6 is provided on the inner wall of one end of the wound inner shell 1. An anterior carbon fiber prefabricated part 8 is provided at one end of the wound inner shell 1 away from the rear metal joint 6. A hinged connecting plate 10 is provided on the anterior carbon fiber prefabricated part 8. A window connecting part 7 is provided on the wound inner shell 1. A window cover plate 71 is provided on the window connecting part 7. A sealing gasket 9 is provided inside the window connecting part 7.

[0026] In this embodiment: Multiple tower-shaped reverse buckles are processed on the outer surface of the rear metal joint 6. Through this setting, it is convenient to install and fix it on the mold during manufacturing; the outer surface of the anterior carbon fiber prefabricated part 8 is processed into a reverse draw port shape. Through this setting, it is convenient to install and fix it on the mold during manufacturing; Epoxy glue is filled between the prefabricated strengthening corner members 2, the upper and lower side balsa wood sandwiches 3 and the left and right side balsa wood sandwiches 4 and the wound inner shell 1, so that there is no gap between the prefabricated strengthening corner members 2, the upper and lower side balsa wood sandwiches 3 and the left and right side balsa wood sandwiches 4 and the wound inner shell 1, and they are closely connected.

[0027] Embodiment Two

[0028] As Figures 1-4 As shown in the figure, a pressure-resistant structure of a square launch tube proposed by the present utility model. Compared with Embodiment One, this embodiment further includes that the prefabricated strengthening corner members 2 are made of carbon fiber material or high-strength steel, which increases the overall structural strength and is light in weight; the upper and lower side balsa wood sandwiches 3 and the left and right side balsa wood sandwiches 4 are made of balsa wood and can be replaced with PMI or foams of the same density. Through this setting, the overall structural stability is increased, and the overall weight can be well reduced by balsa wood.

[0029] Manufacturing steps: This device uses carbon fiber reinforced resin matrix composite materials. By winding circumferentially and laying axial unidirectional fibers, composite materials with mechanical properties meeting the design requirements can be obtained. Therefore, during the manufacturing process, it is necessary to control the tension of the winding fibers and the resin dosage of the laid axial fibers, configure a sizing plate and control the contact surface pressure thereof to scrape off the excess resin; machine 3 inverted cone-shaped buckles on the surface of the rear metal joint 6, perform 200-mesh sandblasting treatment on the surface for winding combination with the pipe body, perform epoxy interface agent brushing treatment on the surface, and finally install and fix it on the mold; machine the surface of the front carbon fiber preform 8 into an inverted drawbar structure, perform 200-mesh sandblasting treatment on the surface for winding combination with the pipe body, perform epoxy interface agent brushing treatment on the surface, and finally install and fix it on the mold; make a layer of carbon felt on the mold surface, brush and soak it with epoxy resin, use a winding machine to control the tension and wind the epoxy resin-impregnated carbon fiber circumferentially for 3 cycles, scrape off the excess resin, axially lay carbon fiber unidirectional fabric and brush and soak it with epoxy resin; cover the mold surface with a vacuum film, and cure the product under vacuum pressure; fill the upper and lower balsa wood cores 3 and the left and right balsa wood cores 4 in their corresponding positions, lay prefabricated reinforcing corner pieces 2 at the four corners of the pipe body and pre-fix them with fiber winding. Brush epoxy glue between the prefabricated reinforcing corner pieces 2, the upper and lower balsa wood cores 3 and the left and right balsa wood cores 4 and the pipe body, and use glue to fill the gaps for fixation; use a winding machine to control the tension and wind the epoxy resin-impregnated carbon fiber circumferentially for 3 cycles, scrape off the excess resin, axially lay carbon fiber unidirectional fabric and brush and soak it with epoxy resin; arrange the above structures in a cycle for 3 cycles; after winding, wind a heat shrinkable film on the surface and cure it in a rotary oven; the carbon fiber composite sandwich structure of this device can provide sufficient rigidity to resist deformation in a state of relatively small weight.

[0030] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A pressure-resistant structure for a square launch tube, comprising a tube body, characterized in that: The tube body includes a wound inner shell (1) and a wound outer shell (5). The wound outer shell (5) is sleeved around the periphery of the wound inner shell (1). Prefabricated strengthening corner members (2) are provided between the four corners of the wound inner shell (1) and the wound outer shell (5). Upper and lower balsa wood sandwiches (3) are filled between the upper and lower outer walls of the wound inner shell (1) and the upper and lower inner walls of the wound outer shell (5). Left and right balsa wood sandwiches (4) are filled between the left and right outer walls of the wound inner shell (1) and the left and right inner walls of the wound outer shell (5). A rear metal joint (6) is provided on the inner wall of one end of the wound inner shell (1). An anterior carbon fiber preform (8) is provided at the end of the wound inner shell (1) away from the rear metal joint (6). A hinged connection plate (10) is provided on the anterior carbon fiber preform (8). A window connection member (7) is provided on the wound inner shell (1). A window cover plate (71) is provided on the window connection member (7). A sealing gasket (9) is provided inside the window connection member (7).

2. The pressure-resistant structure of a square launch tube according to claim 1, characterized in that, Multiple tower-shaped reverse buckles are machined on the outer surface of the rear metal joint (6).

3. The pressure-resistant structure of a square launch tube according to claim 1, wherein The outer surface of the anterior carbon fiber preform (8) is machined into a shape of a reverse draw port.

4. The pressure-resistant structure of a square launch tube according to claim 1, wherein Epoxy glue is filled between the prefabricated strengthening corner member (2), the upper and lower balsa wood sandwiches (3), the left and right balsa wood sandwiches (4) and the wound inner shell (1).

5. The pressure-resistant structure of a square launch tube according to claim 1, wherein, The prefabricated strengthening corner member (2) is made of carbon fiber material or high-strength steel.

6. The pressure-resistant structure of a square launch tube according to claim 1, characterized in that The upper and lower balsa wood sandwiches (3) and the left and right balsa wood sandwiches (4) are made of balsa wood and can be replaced by PMI or foams of the same density.

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