Shell connecting structure of spaceflight propeller
By designing the bayonet and connecting plate for the fuel shell and control shell, the problem of numerous parts and complex bolted connections in existing aerospace thruster shells has been solved, achieving higher tensile and torsional strength as well as structural simplicity.
Patent Information
- Application Number
- CN202423297326.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Existing aerospace thrusters have many outer shell parts, and the bolted connections result in large lateral forces, low tensile and torsional strength, and a complex and not simple structure.
The fuel tank and control tank are connected by bayonet and connecting plate, and indirectly connected by connecting bolts. This reduces the use of bolts, increases the connecting plate as an intermediate component, improves the tensile and torsional strength of the overall structure, and hides the connecting plate to simplify the structure.
It improves the tensile and torsional strength of the aerospace thruster shell, reduces the use of bolts, and makes the structure simpler and assembly easier.
Smart Images
Figure CN223494772U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of aerospace equipment technology, and in particular to a connection structure for the outer shell of an aerospace propulsion unit. Background Technology
[0002] Spacecraft thrusters are a crucial power source for spacecraft, and the design of their outer shell connection structure directly affects the thruster's reliability and service life. Currently, existing spacecraft thrusters have numerous outer shell components, and the shells are directly connected by bolts. Furthermore, due to the extensive use of screws, the screws experience significant lateral forces, resulting in a lack of force coordination between the shells and ultimately lower tensile and torsional strength of the overall structure. Utility Model Content
[0003] This application aims to at least partially address one of the aforementioned technical problems in the prior art. To this end, embodiments of this application provide a space propulsion casing connection structure that eliminates the traditional method of directly connecting the fuel casing and control casing with bolts. Therefore, the overall structure of this application exhibits higher tensile and torsional strength.
[0004] A space propulsion vehicle outer shell connection structure, including
[0005] A fuel shell, the fuel shell having a square structure, with first bayonets at the four corners of the opening of the fuel shell, the end face of the first bayonets being lower than the end face of the opening of the fuel shell, and a first connecting hole being formed on the shell at the opening of the fuel shell.
[0006] The control housing has a square structure. A second bayonet is provided at the four corners of the opening of the control housing. The end face of the second bayonet is lower than the end face of the opening of the control housing. A second connecting hole is provided on the housing at the opening of the control housing.
[0007] A connecting plate, which is a square plate structure, is fitted into the openings of the fuel shell and the control shell. A retaining plate is provided at the center of the outer sides of the four corners of the connecting plate, fitting between the first retaining slot and the second retaining slot. A third connecting hole and a fourth connecting hole are provided on the side of the connecting plate. The third connecting hole is aligned with the first connecting hole, and a first connecting bolt is installed in both the third and first connecting holes. The second connecting hole is aligned with the fourth connecting hole, and a second connecting bolt is installed in both the second and fourth connecting holes.
[0008] In an optional or preferred embodiment, the outer wall of the fuel shell is provided with a vertically extending first strip-shaped protrusion and a vertically extending first strip-shaped groove.
[0009] In an optional or preferred embodiment, the first strip-shaped protrusion is disposed in the lower half of the fuel shell, the first strip-shaped protrusion is distributed in a quarter-fan shape in the lower half of the fuel shell, the first strip-shaped groove is disposed in the upper half of the fuel shell, and the first strip-shaped groove and the first strip-shaped protrusion are complementary to each other on the outer wall of the fuel shell.
[0010] In an optional or preferred embodiment, the outer wall of the control housing is provided with a vertically extending second strip-shaped protrusion and a vertically extending second strip-shaped groove.
[0011] In an optional or preferred embodiment, the second strip-shaped protrusion is disposed on the upper half of the control housing, and the second strip-shaped protrusion is distributed in a quarter-fan shape on the upper half of the control housing. The second strip-shaped groove is disposed on the lower half of the control housing, and the second strip-shaped groove and the second strip-shaped protrusion are complementary to each other on the outer wall of the control housing.
[0012] In an optional or preferred embodiment, the card plate is a bent plate structure disposed at the corner of the connecting plate.
[0013] In an optional or preferred embodiment, a notch is provided in the middle of the four sides of the connecting plate.
[0014] In an optional or preferred embodiment, connecting blocks are provided on the four sides of the connecting plate, and through holes are formed on the connecting blocks, the through holes penetrating the connecting plate.
[0015] Based on the above technical solution, the embodiments of this application have at least the following beneficial effects: This application sets the connecting plate between the fuel shell and the control shell, and then connects the fuel shell to the connecting plate with the first connecting bolt, and connects the control shell to the connecting plate with the second connecting bolt. The connecting plate serves as an intermediate connecting member to connect the control shell and the fuel shell, eliminating the traditional method of directly connecting the fuel shell and the control shell with bolts. Therefore, the overall structure of this application has higher tensile strength and torsional strength, and fewer bolts are used compared to the traditional method. The connecting plate is directly assembled at the opening of the fuel shell and the opening of the control shell, so the connecting plate is hidden inside the fuel shell and the control shell, and the overall structure is simpler. Attached Figure Description
[0016] The present application will be further described below with reference to the accompanying drawings and embodiments;
[0017] Figure 1 This is a schematic diagram of the aerospace thruster outer shell connection structure provided in the embodiments of this application;
[0018] Figure 2 yes Figure 1 Exploded view of the embodiment shown;
[0019] Figure 3yes Figure 1 The exploded view of the embodiment shown is a structural schematic diagram from another perspective. Detailed Implementation
[0020] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of this application.
[0021] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.
[0022] In the description of the embodiments of this application, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0023] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.
[0024] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0025] Spacecraft thrusters are a crucial power source for spacecraft, and the design of their outer shell connection structure directly affects the thruster's reliability and service life. Currently, existing spacecraft thruster outer shells have numerous parts, including four, and assembly is complex, involving many screws with significant lateral forces, and lacking proper stress coordination between shell components.
[0026] Reference Figures 1 to 3 This application provides a space propulsion outer shell connection structure, including a fuel shell 100, a control shell 200 and a connecting plate 300.
[0027] The fuel shell 100 has a square structure. First latches 110 are formed at the four corners of the opening of the fuel shell 100. The end face of the first latch 110 is lower than the end face of the opening of the fuel shell 100. A first connecting hole 120 is formed on the shell at the opening of the fuel shell 100. The control shell 200 has a square structure. Second latches 210 are formed at the four corners of the opening of the control shell 200. The end face of the second latch 210 is lower than the end face of the opening of the control shell 200. A second connecting hole 220 is formed on the shell at the opening of the control shell 200. The connecting plate 300 has a square plate structure and is fitted with... At the openings of the fuel housing 100 and the control housing 200, a retaining plate 310 is provided at the middle of the outer side of the four corners of the connecting plate 300. The retaining plate 310 is fitted between the first retaining slot 110 and the second retaining slot 210. A third connecting hole 320 and a fourth connecting hole 330 are provided on the side of the connecting plate 300. The third connecting hole 320 is aligned with the first connecting hole 120. A first connecting bolt is provided in the third connecting hole 320 and the first connecting hole 120. The second connecting hole 220 is aligned with the fourth connecting hole 330. A second connecting bolt is provided in the second connecting hole 220 and the fourth connecting hole 330.
[0028] This application places a connecting plate 300 between the fuel shell 100 and the control shell 200, then connects the fuel shell 100 to the connecting plate 300 with a first connecting bolt, and connects the control shell 200 to the connecting plate 300 with a second connecting bolt. The connecting plate 300 serves as an intermediate connector between the control shell 200 and the fuel shell 100, eliminating the traditional method of directly connecting the fuel shell 100 and the control shell 200 with bolts. Therefore, the overall structure of this application has higher tensile and torsional strength, and fewer bolts are used compared to the traditional method. The connecting plate 300 is directly assembled at the openings of the fuel shell 100 and the control shell 200, so the connecting plate 300 is hidden inside the fuel shell 100 and the control shell 200, resulting in a simpler overall structure.
[0029] Each side of the connecting plate 300 is provided with two third connecting holes 320 and two fourth connecting holes 330. Each side of the opening of the fuel housing 100 is provided with two first connecting holes 120, and each side of the opening of the control housing 200 is provided with two second connecting holes 220. In this way, each side of the connecting plate 300 is connected to the control housing 200 and the fuel housing 100.
[0030] In some embodiments, the outer wall of the fuel casing 100 is provided with a vertically extending first strip-shaped protrusion 230 and a vertically extending first strip-shaped groove 240.
[0031] In the embodiment shown in this application, a first strip-shaped protrusion 230 is disposed on the lower half of the fuel shell 100, and the first strip-shaped protrusion 230 is distributed in a quarter-fan shape on the lower half of the fuel shell 100. A first strip-shaped groove 240 is disposed on the upper half of the fuel shell 100, and the first strip-shaped groove 240 and the first strip-shaped protrusion 230 are complementary on the outer wall of the fuel shell 100. By providing the first strip-shaped protrusion 230 and the first strip-shaped groove 240, the structural strength of the entire fuel shell 100 can be strengthened, and the appearance of the fuel shell 100 can also be improved.
[0032] In some embodiments, the outer wall of the control housing 200 is provided with a vertically extending second strip-shaped protrusion 230 and a vertically extending second strip-shaped groove 240.
[0033] In the embodiment shown in this application, the second strip-shaped protrusion 230 is disposed on the upper half of the control housing 200, and the second strip-shaped protrusion 230 is distributed in a quarter-fan shape on the upper half of the control housing 200. The second strip-shaped groove 240 is disposed on the lower half of the control housing 200, and the second strip-shaped groove 240 and the second strip-shaped protrusion 230 are complementary on the outer wall of the control housing 200. The second strip-shaped protrusion 230 and the second strip-shaped groove 240 can enhance the structural strength of the entire control housing 200 and also improve the appearance of the control housing 200.
[0034] In some embodiments, the clamping plate 310 is a bent plate structure disposed at the middle of the corner of the connecting plate 300. During assembly, the connecting plate 300 located below the clamping plate 310 fits into the opening of the control housing 200, the connecting plate 300 located above the clamping plate 310 fits into the opening of the fuel housing 100, and the clamping plate 310 fits into the first latch 110 and the second latch 210.
[0035] The height of the opening defined by the first bayonet 110 and the second bayonet 210 after docking is less than or equal to the thickness of the card plate 310.
[0036] In some embodiments, the connecting plate 300 has notches 340 on all four sides. The notches 340 are used to hold the wiring harness between the control housing 200 and the fuel housing 100.
[0037] In some embodiments, connecting blocks 350 are provided on the four sides of the connecting plate 300, and through holes 351 are formed on the connecting blocks 350, which penetrate through the connecting plate 300. When it is necessary to fix the fuel pool inside the fuel shell 100, the top of the connecting block 350 contacts the bottom of the fuel pool, and then the screw passes through the through hole 351 on the connecting block and connects to the fuel pool, thereby connecting the fuel pool to the connecting plate 300.
[0038] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0039] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.
Claims
1. A connection structure for the outer shell of an aerospace thruster, characterized in that: include A fuel shell, the fuel shell having a square structure, with first bayonets at the four corners of the opening of the fuel shell, the end face of the first bayonets being lower than the end face of the opening of the fuel shell, and a first connecting hole being formed on the shell at the opening of the fuel shell. The control housing has a square structure. A second bayonet is provided at the four corners of the opening of the control housing. The end face of the second bayonet is lower than the end face of the opening of the control housing. A second connecting hole is provided on the housing at the opening of the control housing. A connecting plate, which is a square plate structure, is fitted into the openings of the fuel shell and the control shell. A retaining plate is provided at the center of the outer sides of the four corners of the connecting plate, fitting between the first retaining slot and the second retaining slot. A third connecting hole and a fourth connecting hole are provided on the side of the connecting plate. The third connecting hole is aligned with the first connecting hole, and a first connecting bolt is installed in both the third and first connecting holes. The second connecting hole is aligned with the fourth connecting hole, and a second connecting bolt is installed in both the second and fourth connecting holes.
2. The aerospace thruster outer shell connection structure according to claim 1, characterized in that: The outer wall of the fuel shell is provided with a vertically extending first strip-shaped protrusion and a vertically extending first strip-shaped groove.
3. The aerospace thruster outer shell connection structure according to claim 2, characterized in that: The first strip-shaped protrusion is disposed in the lower half of the fuel shell, and the first strip-shaped protrusion is distributed in a quarter-fan shape in the lower half of the fuel shell. The first strip-shaped groove is disposed in the upper half of the fuel shell, and the first strip-shaped groove and the first strip-shaped protrusion are complementary to each other on the outer wall of the fuel shell.
4. The aerospace thruster outer shell connection structure according to claim 1, characterized in that: The outer wall of the control housing is provided with a vertically extending second strip-shaped protrusion and a vertically extending second strip-shaped groove.
5. The aerospace thruster outer shell connection structure according to claim 4, characterized in that: The second strip-shaped protrusion is disposed on the upper half of the control housing, and the second strip-shaped protrusion is distributed in a quarter-fan shape on the upper half of the control housing. The second strip-shaped groove is disposed on the lower half of the control housing, and the second strip-shaped groove and the second strip-shaped protrusion are complementary to each other on the outer wall of the control housing.
6. The aerospace thruster outer shell connection structure according to claim 1, characterized in that: The card plate is a bent plate structure located at the corner of the connecting plate.
7. The aerospace thruster outer shell connection structure according to claim 1, characterized in that: The connecting plate has notches in the middle of its four sides.
8. The aerospace thruster outer shell connection structure according to claim 1, characterized in that: Connecting blocks are provided on the four sides of the connecting plate, and through holes are formed on the connecting blocks, which penetrate the connecting plate.