Lunar surface base shell structure and space cabin

Abstract

The lunar surface base shell structure comprises a thin-wall corrugated disc, an upper end cover and a lower end cover, the thin-wall corrugated disc is contracted to be in a disc state and unfolded to be in a conical shell state through an unfolding driving device, and the upper end cover and the lower end cover are located at the large end and the small end of the thin-wall corrugated disc in the conical shell state; the unfolding driving device comprises a hollow metal pipe, a spiral rail arranged on the lower end cover, a steering guide head arranged at the center end of the spiral rail and a pushing device, the hollow metal pipe is spirally wound in the spiral rail, and one end of the hollow metal pipe extends out of the steering guide head and then is connected with the upper end cover; the pushing device pushes the hollow metal pipe to be fed along the spiral track and guided out through the steering guide head, so that the upper end cover and the lower end cover are pushed to be away from each other, and the thin-wall corrugated disc is driven to be unfolded. The hollow metal pipe forms a high-strength and high-rigidity supporting structure through plastic deformation in the unfolding process, and the long-term stability and safety of the space cabin on the lunar surface are guaranteed.

Description

Technical Field

[0001] The present invention relates to a lunar base, and more particularly to a housing structure of a lunar base and a space capsule. Background Art

[0002] With the increasing exploration activities on the moon, the demand for efficient, safe and economical space living and working facilities is becoming increasingly urgent. Due to the volume and weight limitations of traditional one-time assembled and launched space capsules, the launch cost is high, and it is difficult to meet the requirements of future large space stations or deep space exploration missions in terms of design. In order to achieve rapid deployment and efficient utilization of limited transportation space, the design of the space capsule deployment structure is crucial.

[0003] Existing space capsule deployment structures are mainly divided into: inflatable structures, folded metal frame structures, and sleeve-type deployment structures. The inflatable structure expands by inflating gas, which has the advantages of light weight and easy folding, but its strength and rigidity are insufficient, and it is easily damaged when facing external impacts (such as micrometeorite impacts) and it is difficult to maintain a long-term stable internal pressure. In contrast, although the folded metal frame structure provides higher strength and rigidity, it is usually relatively bulky, increasing the launch cost, and complex mechanical connectors may lead to reliability problems. Summary of the Invention

[0004] Object of the Invention: Aiming at the above disadvantages, the present invention provides a housing structure of a lunar base and a space capsule with a simple structure and high safety and reliability.

[0005] Technical Solution: To solve the above problems, the present invention adopts a housing structure of a lunar base, which includes a thin-walled corrugated disk, an upper end cover and a lower end cover arranged on the thin-walled corrugated disk. The thin-walled corrugated disk is made of a lightweight and high-strength alloy, and is shrunk into a disk state during transportation and expanded into a conical shell state during construction by an unfolding driving device. The upper end cover and the lower end cover are located at the large end and the small end of the thin-walled corrugated disk in the conical shell state. The unfolding driving device includes a hollow metal tube, a spiral track arranged on the lower end cover, a steering guide head arranged at the central end of the spiral track, and a pushing device. The inlet end of the steering guide head is docked with the outlet of the spiral track, and the outlet end of the steering guide head extends along the unfolding direction of the thin-walled corrugated disk. The hollow metal tube is spirally wound in the spiral track, and one end of the hollow metal tube extends out of the steering guide head and is connected to the upper end cover. The pushing device pushes the hollow metal tube to feed along the spiral track and is led out by the steering guide head, thereby pushing the upper end cover and the lower end cover away from each other and driving the thin-walled corrugated disk to unfold.

[0006] After the housing structure reaches the designated position on the lunar surface, the hollow metal tube is fed along the spiral track under the push of the propulsion joint. Finally, through the steering guide head, it is guided from the coiled state in the plane to the vertical direction and gradually extends to the preset height. During the process of the hollow metal tube changing from the coiled state to the vertical tubular support structure, the material undergoes plastic deformation and work hardening. The steering guide head is installed on the upper surface of the upper mounting base plate and is connected to the spiral track inside the upper mounting base plate and the lower mounting base plate. The hollow metal tube can be fed along the track under the drive of the propulsion joint and is guided from the coiled state in the plane to the vertical direction through the steering guide head. After the deployment structure is fully deployed, a section of the hollow metal tube remains in the spiral track.

[0007] Furthermore, the pushing device includes a slide rail passing through the center of the spiral track, a driving motor, and a propulsion joint. The propulsion joint is connected to the end of the hollow metal tube. The driving motor drives the slide rail to rotate around the center of the spiral track. The propulsion joint contacts the side surface of the slide rail. The rotation of the slide rail pushes the propulsion joint to move along the slide rail and the spiral track, and the propulsion joint pushes the hollow metal tube. The motor and the reducer are installed on the lower end cover. The motor transmits power to the reducer. The rotation direction of the rotating shaft of the reducer is perpendicular to the spiral track. The reducer further drives the slide rail so that it can rotate around the central axis of the spiral track. The rotating shaft of the reducer is connected to the slide rail and is positioned on the lower surface of the lower mounting base plate. The power supply can be powered by a battery in the space capsule or an external power supply on the lunar base. This rotational motion is converted into a spiral feeding driving force for the hollow metal tube through the propulsion joint.

[0008] Furthermore, the deployment driving device further includes a lower mounting base plate. The spiral track is arranged on the upper surface of the lower mounting base plate. The lower mounting base plate is provided with a hollowed-out track corresponding to the spiral track. The slide rail and the driving motor are arranged on the lower surface of the lower mounting base plate. The propulsion joint includes a connecting part and a propulsion part. The connecting part is connected to the hollow metal tube, and the fitting method can adopt interference fit. The propulsion part passes through the hollowed-out track and contacts the linear bearing on the side surface of the slide rail. Due to the shape limitation of the spiral track, the propulsion joint performs linear sliding along the linear bearing on the side surface of the slide rail. The rotation of the slide rail cooperates with the linear motion of the propulsion joint, enabling the propulsion joint to accurately push the hollow metal tube along the spiral track to complete the feeding action.

[0009] Furthermore, the deployment driving device further includes an upper mounting base plate and several struts. The upper mounting base plate is fixedly connected to the lower mounting base plate. The upper mounting base plate is grooved to form a spiral track. An opening is provided in the center of the upper mounting base plate for the hollow metal tube to extend. The lower mounting base plate is fixed to the lower end cover through several struts.

[0010] Further, the spiral track includes a left side wall, a right side wall, and an upper side wall. The left side wall and the right side wall are respectively located on both sides of the hollow track. The upper side wall connects the left side wall and the right side wall. A number of needle roller bearings are provided on the inner walls of the left side wall, the right side wall, and the upper side wall of the spiral track, and the hollow metal tube is in rolling contact with the needle roller bearings. The lengths of the hollow metal tube and the spiral track can be determined according to the expansion ratio required for the unfolding of the thin-walled corrugated disk. The function of providing the needle roller bearings in the track is to provide low-friction movement support to ensure that the hollow metal tube can move smoothly, precisely, and efficiently along the predetermined path. The size of the needle roller bearings and the number of cylindrical needle rollers can be determined according to the size of the hollow metal tube and the length of the track.

[0011] Further, a connector is fixedly provided on the upper end cover. One end of the hollow metal tube extends out of the steering guide head and is connected to the connector. The connector includes an outer ring bearing and an inner ring bearing. The outer ring bearing is fixedly connected to the upper end cover, and the inner ring bearing is fixedly connected to one end of the hollow metal tube. The outer ring bearing and the inner ring bearing are axially positioned and rotate relative to each other circumferentially.

[0012] Further, the hollow metal tube is made of aluminum alloy material. Aluminum alloy has good strength-to-weight ratio, excellent workability, and low preparation cost, and is suitable as a consumable for the one-time deployment of the space capsule.

[0013] The present invention also adopts a space capsule applying the above lunar base housing structure, including a housing structure. The housing structure is vertically arranged up and down. The large end of the cone of the housing structure at the lower end is fixed to the ground, and a hatch is provided on the upper end cover at the small end of the cone of the housing structure at the upper end.

[0014] Advantageous effects: Compared with the prior art, the significant advantages of the present invention are: (1) During the unfolding process, the hollow metal tube undergoes work hardening through plastic deformation, forming a high-strength and high-rigidity support structure, ensuring the long-term stability and safety of the space capsule on the lunar surface.

[0015] (2) The space capsule can be unfolded controllably through the unfolding structure. By adjusting the power of the motor, the unfolding speed of the space capsule can be precisely controlled, and the unfolding degree of the space capsule can be adjusted by adjusting the extension length of the metal hollow tube. The unfolding process of the bent tube device simplifies the operation process and reduces the number of mechanical components, improving the reliability and deployment speed of the space capsule.

[0016] (3) Through the use of the hollow circular tube design, the weight of the space capsule is effectively controlled, reducing the launch cost. The metal material has characteristics such as anti-aging and low-temperature resistance, and can serve for a long time in the lunar environment of low gravity, high vacuum, drastic temperature changes, and strong radiation. Compared with other materials, the metal structure has better durability and reliability. Description of the Drawings

[0017] Figure 1 This is a schematic structural diagram of the deployed space capsule in the present invention.

[0018] Figure 2 This is a front view schematic diagram of the deployed space capsule in the present invention.

[0019] Figure 3 This is a schematic structural diagram of the retracted space capsule in the present invention.

[0020] Figure 4 This is a front view schematic diagram of the retracted space capsule in the present invention.

[0021] Figure 5 This is a schematic diagram before and after the deployment of the deployment drive device in the present invention.

[0022] Figure 6 This is a front view schematic diagram of the deployment drive device in the present invention and a partial enlarged view of the setting of the propulsion joint.

[0023] Figure 7 This is a schematic diagram of the installation of the bottom surface of the lower bottom plate in the present invention.

[0024] Figure 8 This is a schematic diagram of the principle of the propulsion device in the present invention.

[0025] Figure 9 This is a schematic structural diagram of the connector in the present invention.

[0026] Figure 10 This is a schematic diagram of the installation of the needle roller bearing on the spiral track in the present invention. Detailed implementation manners

[0027] As Figure 1 and Figure 2 shown, a lunar base housing structure in this embodiment includes a thin-walled corrugated disc 1, an upper end cover and a lower end cover provided on the thin-walled corrugated disc 1. The thin-walled corrugated disc 1 is made of a lightweight and high-strength alloy. As Figure 3 shown, it shrinks into a disc state during transportation and expands into a conical shell state through a deployment drive device during construction. The upper end cover and the lower end cover are located at the large end and the small end of the thin-walled corrugated disc in the conical shell state. The thin-walled corrugated disc 1 serves as the outer shell of the space capsule. The space capsule includes a thin-walled corrugated disc-shaped outer shell of the space capsule, an upper end cover, a lower end cover, a deployment drive device and a propulsion device.

[0028] As Figure 4 and Figure 5As shown in the figure, the unfolding drive device includes a hollow metal tube 4, an upper mounting base plate 2, a lower mounting base plate 3, a number of struts 11, a steering guide head 9 provided at the central end of the spiral track, and a pushing device. The unfolding drive device is loaded inside the lunar base space capsule. The inlet end of the steering guide head 9 is docked with the outlet of the spiral track, and the outlet end of the steering guide head 9 extends along the unfolding direction of the thin-walled corrugated disk. The hollow metal tube 4 is spirally wound inside the spiral track. One end of the hollow metal tube 4 extends out of the steering guide head 9 and is connected to the upper end cover. The pushing device pushes the hollow metal tube 4 to feed along the spiral track and is led out by the steering guide head 9, thereby pushing the upper end cover and the lower end cover away from each other and driving the thin-walled corrugated disk to unfold. The upper mounting base plate 2 is fixedly connected to the lower mounting base plate 3. The upper mounting base plate is grooved to form a spiral track, and the lower mounting base plate is provided with a hollow track corresponding to the spiral track.

[0029] When the space capsule is in a contracted state during transportation, the hollow metal tube 4 is spirally wound inside the spiral track formed by the upper mounting base plate 2 and the lower mounting base plate 3. The hollow metal tube 4 is located on the needle roller bearing of the spiral track. At this time, the vertical end of the metal tube 4 at the steering guide head 9 is connected to the connector 10. When the space capsule needs to be unfolded at the designated position on the lunar surface, the hollow metal tube 4 is pushed by the propulsion joint 7 and feeds along the spiral track and the needle roller bearing 8. Finally, it is guided from the coiled state in the plane to the vertical direction through the steering guide head 9 and gradually extends to the preset height. During the process of the hollow metal tube 4 changing from the coiled state to the vertical tubular support structure, the metal material undergoes plastic deformation and work hardening. Therefore, the unfolding process of this space capsule is irreversible and is a one-time unfolding method.

[0030] As Figure 3 and Figure 4 shown in the figure, when the space capsule is in a contracted state, the unfolding drive device is installed inside the space capsule shell, and the entire space capsule is folded into a compact disk shape. The hollow metal tube 4 is pushed by the propulsion joint 7 to extend to a predetermined height, driving the connector 10 at the top of the space capsule, and the space capsule is fully unfolded into a conical structure. The hollow metal tube 4 used to support the space capsule can be made of aluminum alloy material. Aluminum alloy has good strength-to-weight ratio, excellent workability and low preparation cost, and is suitable as a consumable for one-time unfolding.

[0031] As Figure 5 shown in the figure, after the thin-walled corrugated disk is fully unfolded, a section of the hollow metal tube 4 still remains in the spiral track. The bent hollow metal tube 4 and the steering guide head 9 in the spiral track can provide stiffness for the entire unfolding drive device.

[0032] As Figure 6 and Figure 7As shown in the figure, the pushing device includes a sliding rail passing through the center of the spiral track, a driving motor, and a pushing joint. The pushing joint is connected to the end of the hollow metal tube. The driving motor drives the sliding rail to rotate around the center of the spiral track. The pushing joint contacts the side surface of the sliding rail. When the sliding rail rotates, it pushes the pushing joint to move along the sliding rail and the spiral track, and the pushing joint pushes the hollow metal tube. The pushing joint includes a connecting part and a pushing part. The connecting part is connected to the hollow metal tube, and the pushing part passes through the hollow track and contacts the sliding rail.

[0033] As Figure 6 shown in the figure, the matching mode of the pushing joint 7 and the hollow metal tube 4 is as follows: an interference fit is adopted between the cylindrical shaft body connecting part of the pushing joint 7 and the hole of the hollow metal tube 4. Under the push of the pushing joint 7, the hollow metal tube 4 is fed along the spiral track. Finally, through the steering guide head 9, the plastic deformation from planar coiling to vertical elongation is realized.

[0034] As Figure 7 shown in the figure, the driving motor 5 and the sliding rail 6 are installed on the lower surface of the lower mounting base plate 3. Six support columns are installed along the circumference on the lower surface of the lower mounting base plate 3, and their function is to fix the entire driving and unfolding device. The upper surface of the support column 11 is connected to the lower surface of the lower mounting base plate 3, and the lower surface of the support column 6 is connected to the lower end cover of the space capsule shell. The lower mounting base plate 3 is provided with a hollow track corresponding to the spiral track, and the pushing joint pushes the hollow metal tube 4 in the groove to complete the feeding movement.

[0035] As Figure 8 shown in the figure, the feeding process of the hollow metal tube 4 is driven by the driving motor 5. The power transmitted by the motor is transmitted to the sliding rail through the speed reducer 501, so that the sliding rail 6 rotates around the axis of the spiral track center, and its angular velocity direction is ω. While the sliding rail 6 is rotating, the pushing joint 7 moves linearly along the linear bearing 601 under the push of the sliding rail 6, and its velocity direction is V. The rotational movement of the sliding rail 6 and the linear movement of the pushing joint 7 along the linear bearing 601 are superimposed, which can be regarded as the pushing joint 7 feeding along a spiral track around the center of the spiral track, as shown by the trajectory S in Figure 8 . The lower bases of the driving motor 5 and the speed reducer 501 are fixed to the lower end cover of the space capsule shell.

[0036] As Figure 9 shown in the figure, the connector 10 is internally equipped with an outer ring bearing 111 and an inner ring bearing 112. This arrangement allows the hollow metal tube 4 to rotate freely within the connector 10, effectively offsetting the torsional force that may be generated during its extension process. One end of the connector 10 where the bearing is installed is fixedly connected to the top end of the hollow metal tube 4, and the other end is closely connected to the surface of the upper end cover of the space capsule shell to ensure the structural stability.

[0037] As Figure 10As shown, the needle roller bearing 8 adopts a spiral design and is divided into three parts: the top, the left side, and the right side. The size of the needle roller bearing can be adjusted according to the diameter of the hollow metal tube 4 to ensure the best fit. Inside each needle roller bearing, there are multiple cylindrical needle rollers 801 evenly distributed, aiming to ensure the smooth movement and low friction characteristics of the hollow metal tube 4 when feeding along the spiral track.

Claims

1. A lunar base shell structure, characterized in that: The invention comprises a thin-walled corrugated disk (1), an upper end cover and a lower end cover arranged on the thin-walled corrugated disk (1), wherein the thin-walled corrugated disk (1) is made of a light high-strength alloy, shrinks into a disc state during transportation, and is expanded into a conical shell state by an expansion drive device during construction, and the upper end cover and the lower end cover are located at the large end and the small end of the thin-walled corrugated disk (1) in the conical shell state; the expansion drive device comprises a hollow metal tube (4), a spiral track arranged on the lower end cover, a steering guide head (9) arranged at the central end of the spiral track, and a driving device (11) arranged at the central end of the spiral track. The device comprises a steering guide head (9) having an inlet end connected to an outlet of a spiral track, an outlet end of the steering guide head (9) extending along the direction of expansion of the thin-walled corrugated disk (1), a hollow metal tube (4) spirally wound in the spiral track, one end of the hollow metal tube (4) extending from the steering guide head (9) and connected to an upper end cover, and a pushing device pushing the hollow metal tube (4) to feed along the spiral track and be guided out by the steering guide head (9), thereby pushing the upper end cover and the lower end cover away from each other, thereby driving the thin-walled corrugated disk (1) to expand.

2. The lunar base shell structure according to claim 1, characterized in that: The pushing device comprises a slide rail (6) passing through the center of the spiral track, a drive motor (5), and a push joint (7); the push joint (7) is connected to the end of the hollow metal tube (4); the drive motor (5) drives the slide rail (6) to rotate around the center of the spiral track; the push joint (7) contacts the side of the slide rail (6); the slide rail (6) rotates to push the push joint (7) to move along the slide rail (6) and the spiral track; and the push joint (7) pushes the hollow metal tube (4).

3. The lunar base shell structure according to claim 2, characterized in that: The deployment drive device further comprises a mounting lower base plate (3), the spiral track being arranged on the upper surface of the mounting lower base plate (3), the mounting lower base plate (3) being provided with a hollow track corresponding to the spiral track, the slide rail (6) and the drive motor (5) being arranged on the lower surface of the mounting lower base plate (3), the propulsion joint (7) comprising a connecting portion and a propulsion portion, the connecting portion being connected to the hollow metal tube (4), and the propulsion portion passing through the hollow track and contacting the slide rail (6).

4. The lunar base shell structure according to claim 3, characterized in that: The deployment drive device further comprises an upper mounting base plate (2) and a plurality of pillars (11), wherein the upper mounting base plate (2) is fixedly connected to the lower mounting base plate (3), the upper mounting base plate (2) is grooved to form a spiral track, an opening is provided at the center of the upper mounting base plate (2) for the hollow metal tube (4) to extend out, and the lower mounting base plate (3) is fixed to the lower end cover via the plurality of pillars (11).

5. The lunar base shell structure according to claim 3, characterized in that: The spiral track comprises a left side wall, a right side wall and an upper side wall, the left side wall and the right side wall are respectively located on both sides of the hollow track, the upper side wall connects the left side wall and the right side wall, and the inner walls of the left side wall, the right side wall and the upper side wall of the spiral track are all provided with a plurality of needle bearings, and the hollow metal tube (4) is in rolling contact with the needle bearings (8).

6. The lunar base shell structure according to claim 2, characterized in that: The upper end cover is fixedly provided with a connecting head (10), and one end of the hollow metal tube (4) extends out from the steering guide head (9) and is connected to the connecting head (10).

7. The lunar base shell structure according to claim 6, characterized in that: The connector comprises an outer ring bearing (111) and an inner ring bearing (112); the outer ring bearing (111) is fixedly connected to the upper end cover; the inner ring bearing (112) is fixedly connected to one end of the hollow metal tube (4); the outer ring bearing (111) and the inner ring bearing (112) are axially positioned and circumferentially rotate relative to each other.

8. The lunar base shell structure according to claim 1, characterized in that: The hollow metal tube (4) is made of aluminum alloy material.

9. The lunar base shell structure according to claim 1, characterized in that: When the thin-wall corrugated disk (1) is unfolded into a conical shell state, part of the hollow metal tube (4) is still located in the spiral track.

10. A space module using the lunar base shell structure of claim 1, characterized in that: The utility model comprises a shell structure, which is vertically arranged up and down. The conical large end of the shell structure at the lower end is fixed to the ground, and the upper end cover of the conical small end of the shell structure at the upper end is provided with a hatch.

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