Rocket corrugated board skin cabin section and machining method thereof

Abstract

The invention relates to the technical field of liquid carrying, in particular to a rocket corrugated board skin cabin section which comprises an upper end frame, a middle frame, a corrugated board skin and a lower end frame. Wherein the corrugated board skin is provided with a plurality of parallel corrugated grooves, the corrugated board skin is curled into a barrel shape, and the extending directions of all the corrugated grooves of the barrel-shaped corrugated board skin are the same as the axial direction of the barrel-shaped corrugated board skin; the upper end frame is located at the position, close to the upper edge, of the inner side of the barrel-shaped corrugated board skin and is in threaded connection with the corrugated board skin, the lower end frame is located at the position, close to the lower edge, of the inner side of the barrel-shaped corrugated board skin and is in threaded connection with the corrugated board skin, and the middle frame is located in the middle of the inner side of the barrel-shaped corrugated board skin and is in rivet connection with the corrugated board skin. The working efficiency of processing the corrugated board skin cabin section of the rocket can be improved, and the force transmission efficiency of the corrugated board skin cabin section of the rocket can be improved.

Description

Technical Field

[0001] This application relates to the field of liquid transport technology, and in particular to a corrugated plate skin section for rockets and its processing method. Background Technology

[0002] Rocket modules are an important component of a rocket. Most rocket modules are skin-string structures, with the skin forming a cylindrical shape, primarily serving to maintain the aerodynamic shape and withstand aerodynamic loads. Dozens of stringers in the rocket module are arranged in a ring inside or outside the skin, serving as the main load-bearing components, supporting the skin and transferring loads.

[0003] Currently, stringers and skin are usually connected by a large number of rivets. However, the riveting work with a large number of rivets will inevitably reduce work efficiency, and the force transmission efficiency of stringers and skin will be affected after they are riveted together.

[0004] Therefore, how to improve the working efficiency of the connection between the stringers and the skin, and how to improve the force transmission efficiency of the stringers and the skin, are technical problems that urgently need to be solved by those skilled in the art. Summary of the Invention

[0005] This application provides a rocket corrugated plate skin section and its processing method to improve the working efficiency of processing rocket corrugated plate skin sections and improve the force transmission efficiency of rocket corrugated plate skin sections.

[0006] To solve the above-mentioned technical problems, this application provides the following technical solution:

[0007] A rocket corrugated plate skin section includes: an upper frame, a middle frame, a corrugated plate skin, and a lower frame; wherein, the corrugated plate skin has multiple parallel corrugated grooves, and the corrugated plate skin is rolled into a cylindrical shape, and the extension direction of all the corrugated grooves of the cylindrical corrugated plate skin is the same as the axial direction of the cylindrical corrugated plate skin; the upper frame is located on the inner side of the cylindrical corrugated plate skin near its upper edge and is screwed to the corrugated plate skin, the lower frame is located on the inner side of the cylindrical corrugated plate skin near its lower edge and is screwed to the corrugated plate skin, and the middle frame is located on the inner side of the cylindrical corrugated plate skin at the middle position and is riveted to the corrugated plate skin.

[0008] In the rocket corrugated plate skin section described above, preferably, bolt mounting holes are provided on the circumferential surfaces of both the upper and lower end frames, and mounting holes are provided on the corrugated plate skin near its upper edge and near its lower edge; bolts pass through the mounting holes on the corrugated plate skin near its upper edge and the bolt mounting holes on the upper end frame to screw the corrugated plate skin to the upper end frame; bolts pass through the mounting holes on the corrugated plate skin near its lower edge and the bolt mounting holes on the lower end frame to screw the corrugated plate skin to the lower end frame.

[0009] In the rocket corrugated plate skin section described above, preferably, the opening of the corrugated groove faces the inside of the cylindrical corrugated plate skin.

[0010] In the rocket corrugated plate skin section described above, preferably, a manhole is provided between two adjacent corrugated grooves on the corrugated plate skin, and the manhole does not overlap with the intermediate frame. An openable / closeable manhole cover is provided at the manhole.

[0011] In the rocket corrugated plate skin section described above, preferably, the spacing between the corrugated grooves on both sides of the manhole is greater than the spacing between the other adjacent corrugated grooves; multiple reinforcing stringers parallel to the corrugated grooves are provided on the outer surface of the corrugated plate skin, with some reinforcing stringers located above the manhole, some reinforcing stringers located below the manhole, some reinforcing stringers located to the left of the manhole, and some reinforcing stringers located to the right of the manhole.

[0012] A method for processing a corrugated plate skin section of a rocket includes the following steps: Step S310, punching multiple parallel corrugated grooves on a sheet metal to form a corrugated plate skin; Step S320, rolling the corrugated plate skin into a cylindrical shape, with the extension direction of the corrugated grooves being the same as the axial direction of the cylindrical corrugated plate skin; Step S330, screwing the upper end frame and the lower end frame to the inner side of the cylindrical corrugated plate skin near the upper and lower edges, respectively, and riveting the middle frame to the middle position of the inner side of the cylindrical corrugated plate skin.

[0013] In the above-described method for processing the corrugated plate skin section of a rocket, it is preferable that, during the stamping process of the corrugated plate skin, a position for opening a manhole is reserved on the plate, and a corrugated groove is not stamped at that position, so that the interval between the corrugated grooves on both sides of the position for opening the manhole is greater than the interval between the other adjacent corrugated grooves.

[0014] In the above-described method for processing the corrugated plate skin section of a rocket, preferably, a manhole is made at a reserved location for opening a manhole, and the manhole does not overlap with the intermediate frame, and an openable / closeable manhole cover is provided at the manhole.

[0015] In the above-described method for processing the corrugated plate skin section of a rocket, preferably, multiple reinforcing stringers parallel to the corrugated grooves are provided on the outer surface of the corrugated plate skin. Some of the reinforcing stringers are located above the manhole, some are located below the manhole, some are located to the left of the manhole, and some are located to the right of the manhole.

[0016] In the above-described method for processing rocket corrugated plate skin sections, it is preferable that the openings of the corrugated grooves of the corrugated plate skin are oriented toward the inner side of the cylindrical corrugated plate skin.

[0017] Compared to the aforementioned background technology, the rocket corrugated plate skin section and its processing method in this application, compared to the traditional skin stringer section, improve the skin and stringers into corrugated plate skin. By using CNC stamping forming equipment, the rolled metal sheet is directly stamped into corrugated plate skin, and the corrugated plate skin is rolled into a cylindrical shape, which greatly reduces the workload of complex riveting, improves the working efficiency of processing rocket corrugated plate skin sections, and improves the force transmission efficiency of rocket corrugated plate skin sections by reducing rivets, while also reducing weight. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the corrugated plate skin section of a rocket provided in an embodiment of this application;

[0020] Figure 2 This is a schematic diagram of the corrugated sheet skin provided in the embodiments of this application;

[0021] Figure 3 This is a flowchart of the processing method for the corrugated plate skin section of a rocket provided in the embodiments of this application.

[0022] Among them, 10-upper frame, 20-middle frame, 30-corrugated sheet skin, 31-corrugated channel, 40-lower frame, 50-reinforcing stringer, and 60-mouth cover. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] Example 1

[0025] like Figure 1 and Figure 2As shown, this application provides a rocket corrugated plate skin section, including: an upper frame 10, a middle frame 20, a corrugated plate skin 30, and a lower frame 40; wherein, the corrugated plate skin 30 has multiple parallel corrugated grooves 31, that is, multiple parallel corrugated grooves 31 are formed on the plate by stamping, and the corrugated plate skin 30 is rolled into a cylindrical shape, and the extension direction of all the corrugated grooves 31 of the cylindrical corrugated plate skin 30 is the same as the axial direction of the cylindrical corrugated plate skin 30; the upper frame 10 and the lower frame 40 are both annular, and the upper frame 10 is... The upper frame 10 is screwed to the inner side of the cylindrical corrugated sheet skin 30 near its upper edge. The lower frame 40 is screwed to the inner side of the cylindrical corrugated sheet skin 30 near its lower edge. The middle frame 20 is circular and is located in the middle of the inner side of the cylindrical corrugated sheet skin 30 and is riveted to the corrugated sheet skin 30. The "middle position" mentioned here refers to the position on the corrugated sheet skin 30 between the upper frame 10 and the lower frame 40, and does not necessarily mean that the corrugated sheet skin 30 is located in the exact center.

[0026] Optionally, bolt mounting holes are provided on the peripheral surfaces of both the upper frame 10 and the lower frame 40, and mounting holes are provided on the corrugated sheet skin 30 near its upper edge and near its lower edge. Bolts pass through the mounting holes on the corrugated sheet skin 30 near its upper edge and the bolt mounting holes on the upper frame 10 to achieve a screw connection between the corrugated sheet skin 30 and the upper frame 10; bolts pass through the mounting holes on the corrugated sheet skin 30 near its lower edge and the bolt mounting holes on the lower frame 40 to achieve a screw connection between the corrugated sheet skin 30 and the lower frame 40. Alternatively, the bolt mounting holes on the upper frame 10 extend from the outer peripheral surface of the upper frame 10 to the inner peripheral surface of the upper frame 10; the bolt mounting holes on the lower frame 40 extend from the outer peripheral surface of the lower frame 40 to the inner peripheral surface of the lower frame 40. Alternatively, the bolt mounting holes on the upper frame 10 extend in the same direction as the diameter of the upper frame 10, and the bolt mounting holes on the lower frame 40 extend in the same direction as the diameter of the lower frame 40.

[0027] Optionally, all the corrugated grooves 31 on the corrugated sheet skin 30 are evenly spaced, so that the corrugated sheet skin 30 can bear the load evenly. In order to maximize the contact area between the outer peripheral surfaces of the upper frame 10, the middle frame 20 and the lower frame 40 and the inner surface of the corrugated sheet skin 30, the openings of the corrugated grooves 31 of the corrugated sheet skin 30 can be oriented towards the inner side of the cylindrical corrugated sheet skin 30. If a manhole needs to be opened on the rocket corrugated sheet skin section, in order to facilitate the opening and closing of the manhole, the manhole can be opened between two adjacent corrugated grooves 31 on the corrugated sheet skin 30, and the manhole should not overlap with the middle frame 20, thereby ensuring the effective area of ​​the manhole. An openable / closable manhole cover 60 is provided at the manhole on the corrugated sheet skin 30 for personnel to enter and exit when needed. Optionally, the spacing between the corrugated grooves 31 on both sides of the manhole is greater than the spacing between other adjacent corrugated grooves 31. This means that during the stamping process of the corrugated sheet skin 30, corrugated grooves 31 are not stamped at the location where the manhole is needed, thus reserving an area on the corrugated sheet skin 30 to accommodate the manhole. Alternatively, after the manhole cover 60 is closed, one side of the manhole cover 60 is hinged to the corrugated sheet skin 30, and the other side of the manhole cover 60 is screwed onto the corrugated sheet skin 30. After the manhole cover 60 is opened, the other side of the manhole cover 60 is not connected to the corrugated sheet skin 30.

[0028] Based on the above, multiple reinforcing stringers 50 parallel to the corrugated grooves 31 are provided on the outer surface of the corrugated skin 30. Some reinforcing stringers 50 are located above the manhole, some below the manhole, some to the left of the manhole, and some to the right of the manhole. These reinforcing stringers 50 enhance the overall strength of the rocket's corrugated skin section. Optionally, a reinforcing stringer 50 is provided on both the left and right sides of the manhole. Alternatively, the corrugated skin 30 and the reinforcing stringers 50 are connected by riveting.

[0029] In addition, multiple intermediate frames 20 are provided in the middle of the inner side of the corrugated sheet skin 30, and all intermediate frames 20 are evenly spaced. Optionally, two intermediate frames 20 are provided in the middle of the inner side of the corrugated sheet skin 30. Also optionally, a manhole is located between these two intermediate frames 20, so that the manhole avoids these two intermediate frames 20.

[0030] Example 2

[0031] like Figure 3 As shown, this application provides a method for processing a rocket corrugated plate skin section, including the following steps:

[0032] Step S310: Multiple parallel corrugated grooves are punched into the sheet material to form a corrugated sheet skin;

[0033] Multiple parallel corrugated grooves 31 are stamped into the sheet metal, and these grooves 31 can be evenly spaced to form a corrugated sheet skin 30. If a manhole is required later, a space for the manhole can be pre-reserved on the sheet metal during the stamping of the corrugated sheet skin 30. However, no corrugated grooves 31 are stamped at the manhole location, ensuring that the spacing between the grooves on either side of the manhole location is greater than the spacing between other adjacent grooves, thus guaranteeing the size of the manhole. After the corrugated sheet skin 30 is stamped, the corresponding manhole is made at the pre-reserved location.

[0034] Step S320: Roll the corrugated sheet skin into a cylindrical shape, and make the extension direction of the corrugated grooves the same as the axial direction of the cylindrical corrugated sheet skin.

[0035] The stamped corrugated sheet skin 30 is rolled into a cylindrical shape using a rolling fixture, and the extension direction of all the corrugated grooves 31 of the cylindrical corrugated sheet skin 30 is the same as the axial direction of the cylindrical corrugated sheet skin 30.

[0036] Step S330: Screw the upper frame and the lower frame to the inner side of the cylindrical corrugated sheet skin near the upper and lower edges, respectively, and rivet the middle frame to the middle position of the inner side of the cylindrical corrugated sheet skin.

[0037] After the corrugated sheet skin is rolled into a cylindrical shape, the upper frame 10 is screwed to the inner side of the cylindrical corrugated sheet skin 30 near the upper edge, the lower frame 40 is screwed to the inner side of the cylindrical corrugated sheet skin 30 near the lower edge, and the middle frame 20 is riveted to the middle position of the inner side of the cylindrical corrugated sheet skin 30.

[0038] To maximize the contact area between the outer periphery of the upper frame 10, middle frame 20, and lower frame 40 and the inner side of the corrugated sheet skin 30, the openings of the corrugated grooves 31 of the corrugated sheet skin 30 can be oriented towards the inner side of the cylindrical corrugated sheet skin 30. Additionally, multiple middle frames 20 are positioned at the center of the inner side of the corrugated sheet skin 30, with uniform spacing between all the middle frames 20. Optionally, two middle frames 20 are positioned at the center of the inner side of the corrugated sheet skin 30. Alternatively, these two middle frames 20 can be positioned above and below the manhole, so that the manhole avoids these two middle frames 20.

[0039] Multiple reinforcing stringers 50, parallel to the corrugated grooves 31, are provided on the outer surface of the corrugated skin 30. Some of these stringers 50 are positioned above the manhole, some below, some to the left, and some to the right of the manhole. This arrangement enhances the overall strength of the rocket's corrugated skin section. Optionally, one reinforcing stringer 50 can be provided on both the left and right sides of the manhole. Alternatively, the corrugated skin 30 and the reinforcing stringers 50 can be connected by riveting.

[0040] In addition, one side of the manhole on the corrugated sheet skin 30 is connected to one side of the manhole cover 60 by a hinge, and the other side of the manhole cover 60 is connected to the other side of the manhole on the corrugated sheet skin 30 by a screw.

[0041] The corrugated sheet skin 30 of the rocket corrugated sheet skin section in this application can be processed by CNC stamping forming equipment, which is simple to process; the density, height and other dimensional parameters of the corrugated grooves 31 can also be adjusted in advance by layout; the one-piece stamping structure has high force transmission efficiency compared with the large number of rivets in traditional skin stringer sections. In addition, compared with traditional skin stringer sections, the advantages of the rocket corrugated sheet skin section of this application are its simple structure and reduced riveting work, which greatly improves work efficiency and reduces the weight of the rocket corrugated sheet skin section. In addition, the rocket corrugated sheet skin section can also be used for rocket propellant tank short shells and wall panels.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A corrugated plate skin section for a rocket, characterized in that, include: Top frame, middle frame, corrugated sheet skin, and bottom frame; The corrugated sheet skin has multiple parallel corrugated grooves and is rolled into a cylindrical shape. The extension direction of all the corrugated grooves of the cylindrical corrugated sheet skin is the same as the axial direction of the cylindrical corrugated sheet skin. The upper frame is located on the inner side of the cylindrical corrugated sheet skin near its upper edge and is screwed to the corrugated sheet skin. The lower frame is located on the inner side of the cylindrical corrugated sheet skin near its lower edge and is screwed to the corrugated sheet skin. The middle frame is located in the middle of the inner side of the cylindrical corrugated sheet skin and is riveted to the corrugated sheet skin.

2. The rocket corrugated plate skin section according to claim 1, characterized in that, Bolt mounting holes are provided on the periphery of both the upper and lower frames, and mounting holes are provided on the corrugated sheet skin near its upper edge and near its lower edge. Bolts pass through mounting holes on the corrugated sheet skin near its upper edge and bolt mounting holes on the upper frame to screw the corrugated sheet skin to the upper frame; bolts pass through mounting holes on the corrugated sheet skin near its lower edge and bolt mounting holes on the lower frame to screw the corrugated sheet skin to the lower frame.

3. The rocket corrugated plate skin section according to claim 1 or 2, characterized in that, The opening of the corrugated groove faces the inside of the cylindrical corrugated sheet skin.

4. The rocket corrugated plate skin section according to claim 1 or 2, characterized in that, Manholes are made between two adjacent corrugated grooves on the corrugated sheet skin, and the manholes do not overlap with the middle frame. A manhole cover that can be opened / closed is provided at the manhole.

5. The rocket corrugated plate skin section according to claim 4, characterized in that, The spacing between the corrugated grooves on both sides of the manhole is greater than the spacing between the other adjacent corrugated grooves; Multiple reinforcing stringers parallel to the corrugated grooves are provided on the outer surface of the corrugated sheet skin. Some of the reinforcing stringers are located above the manhole, some below the manhole, some to the left of the manhole, and some to the right of the manhole.

6. A method for processing a corrugated plate skin section of a rocket, characterized in that, Includes the following steps: Step S310: Multiple parallel corrugated grooves are punched into the sheet material to form a corrugated sheet skin; Step S320: Roll the corrugated sheet skin into a cylindrical shape, and make the extension direction of the corrugated grooves the same as the axial direction of the cylindrical corrugated sheet skin. Step S330: Screw the upper frame and the lower frame to the inner side of the cylindrical corrugated sheet skin near the upper and lower edges, respectively, and rivet the middle frame to the middle position of the inner side of the cylindrical corrugated sheet skin.

7. The processing method for the corrugated plate skin section of a rocket according to claim 6, characterized in that, When stamping corrugated sheet skin, a position for opening a manhole is reserved on the sheet, and a corrugated groove is not stamped at that position, so that the interval between the corrugated grooves on both sides of the position for opening the manhole is greater than the interval between the other adjacent corrugated grooves.

8. The processing method for the corrugated plate skin section of a rocket according to claim 7, characterized in that, Manholes are made at the reserved locations for manholes, and the manholes do not overlap with the middle frame. Openable / closable manhole covers are provided at the manhole locations.

9. The processing method for the corrugated plate skin section of a rocket according to claim 8, characterized in that, Multiple reinforcing stringers parallel to the corrugated grooves are installed on the outer surface of the corrugated sheet skin. Some of the reinforcing stringers are located above the manhole, some below the manhole, some to the left of the manhole, and some to the right of the manhole.

10. The method for processing a rocket corrugated plate skin section according to any one of claims 6 to 9, characterized in that, The opening of the corrugated groove of the corrugated sheet skin is set to face the inside of the cylindrical corrugated sheet skin.

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