A printing device for a lunar structure and a printing method thereof

Abstract

The application provides a printing device for lunar surface structure and a printing method thereof, wherein the printing device comprises a plurality of printing mechanisms, each of which comprises a collecting assembly arranged on the lunar surface for collecting lunar soil powder, and a conveying assembly connected to the distal end of the collecting assembly; the conveying assembly is provided with a spraying assembly with a first cavity at the distal end of the collecting assembly, and a first driving assembly is arranged on the conveying assembly to drive the conveying assembly to convey the lunar soil powder into the first cavity; the spraying assembly is provided with a first opening at the distal end of the conveying assembly; a heating assembly is arranged outside the spraying assembly to heat and melt the lunar soil powder, and the obtained lunar soil melt flows out of the first opening; the lunar soil powder collected by the collecting assembly is conveyed to the spraying assembly by the first driving assembly, and the lunar soil powder is melted by the heating assembly to obtain the lunar soil melt, so that the structure can be built; the structure is built in situ on the lunar surface, the building cost is reduced and the building efficiency is improved by taking the lunar soil from the lunar surface.

Description

Technical Field

[0001] This application relates to the field of lunar surface construction technology, specifically to a printing device and method for lunar surface structures. Background Technology

[0002] In recent years, lunar exploration and its resource utilization have attracted the attention of major aerospace research institutions worldwide. Various countries have successively carried out multiple lunar exploration and landing activities and planned the development of future lunar bases, with the construction of lunar bases being a crucial component. Currently, raw materials for lunar surface structures generally need to be transported indirectly from Earth to the lunar surface. Lunar construction projects will consume a large amount of building materials, and due to the limitations of spacecraft carrying capacity in the short term, the cost of construction will be enormous. Tests have shown that iron elements in the lunar regolith promote the coupling between lunar regolith and microwave radiation, effectively improving the adhesion and strength of sintered products. This makes lunar regolith easy to shape and holds promise as the best resource for in-situ utilization on the moon. Therefore, how to construct structures on the lunar surface in situ using lunar regolith as raw material is an urgent problem to be solved. Summary of the Invention

[0003] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a printing apparatus and printing method for lunar structures.

[0004] In a first aspect, this application provides a printing apparatus for lunar surface structures, comprising:

[0005] Multiple printing units, each including:

[0006] A collection component, located on the lunar surface, is used to collect lunar soil powder from the lunar surface;

[0007] A conveying assembly, one end of which is connected to the collecting assembly, has a first channel inside for conveying the lunar soil powder collected by the collecting assembly;

[0008] A jetting assembly, one end of which is connected to the end of the delivery assembly away from the lunar surface, the jetting assembly having a first cavity inside, and the end of the jetting assembly away from the delivery assembly having a first opening;

[0009] A heating assembly is used to heat and melt the lunar soil powder in the first cavity to obtain the lunar soil melt, which can flow out from the first opening;

[0010] A first driving component is used to drive the conveying component to convey the lunar soil powder.

[0011] According to the technical solution provided in the embodiments of this application, the first cavity includes a first part and a second part, the first part and the second part are connected, the end of the first part away from the second part is connected to the end of the delivery component away from the lunar surface, and the end of the second part away from the first part is provided with the first opening.

[0012] According to the technical solution provided in the embodiments of this application, the heating component includes a heating element wrapped around the outer wall of the spraying component and a second driving component that drives the heating element to heat up.

[0013] According to the technical solution provided in the embodiments of this application, the printing mechanism further includes a cooling component, which can reduce the temperature of the heating element.

[0014] According to the technical solution provided in the embodiments of this application, the outer wall of the spraying assembly is provided with a coating layer, and the coating layer is in contact with the heating element on the side away from the spraying assembly.

[0015] According to the technical solution provided in the embodiments of this application, a third driving component is further provided between the conveying component and the acquisition component. One end of the third driving component is rotatably connected to the conveying component. The third driving component has a second channel inside, and the second channel is connected to the first channel to form a third channel.

[0016] According to the technical solution provided in the embodiments of this application, the acquisition component includes a first support, the end of the first support away from the third driving component is in contact with the lunar surface and has a second opening, the first support has a second cavity inside, and the second opening communicates with the second cavity and the third channel to form a fourth channel; the acquisition component also includes a grinding element disposed in the second cavity, the grinding element being used to grind the acquired lunar soil powder.

[0017] According to the technical solution provided in the embodiments of this application, a first spraying component is detachably connected to the first opening, and the first spraying component is provided with a plurality of spraying ports, each of which is connected to the first cavity.

[0018] Secondly, this application provides a printing method for a lunar surface structure printing device, comprising the following steps:

[0019] S101: Obtain the set of printing trajectories for the lunar surface structures to be printed;

[0020] S102: The set of printing tracks is divided according to the printing area corresponding to each printing mechanism to obtain n printing tracks; each printing mechanism corresponds to a printing area;

[0021] S103: Drive each printing mechanism to print the corresponding printing area according to each printing trajectory.

[0022] According to the technical solution provided in the embodiments of this application, driving each printing mechanism to print the corresponding printing area according to each printing trajectory includes driving the i-th printing mechanism to print the a-th printing area, and using the j-th printing mechanism to print the (a+1)-th printing area; where 1≤i≤m, 1≤j≤m, 1≤a≤n, i≠j, i and j are the numbers of the printing mechanisms, a is the number of the printing area, m is the number of the printing mechanisms, n is the number of the printing areas, and i, j, a, m and n are all integers.

[0023] In summary, this application proposes a printing device and method for lunar surface structures. The printing device includes multiple printing mechanisms, each including a collection component located on the lunar surface for collecting lunar soil powder. The end of the collection component away from the lunar surface is connected to a conveying component. The end of the conveying component away from the collection component is provided with a spraying component having a first cavity inside. The conveying component is provided with a first driving component that drives it to convey the lunar soil powder into the first cavity. The end of the spraying component away from the conveying component is provided with a first opening. A heating component is provided outside the spraying component for heating and melting the lunar soil powder. The heated lunar soil melt flows out through the first opening. The first driving component drives the conveying component to convey the lunar soil powder collected by the collection component to the spraying component. The heating component then melts the lunar soil powder to obtain the lunar soil melt, which can be used to construct the structure. This realizes in-situ construction of structures on the lunar surface, reducing construction costs and improving construction efficiency by using materials locally on the lunar surface. Attached Figure Description

[0024] Figure 1 A schematic diagram of a printing device for lunar structures provided in this application embodiment;

[0025] Figure 2 for Figure 1 Cross-sectional view of A in the middle;

[0026] Figure 3 This is a schematic diagram of the structure of the cooling assembly provided in the embodiments of this application;

[0027] Figure 4 A top view of a printing device for lunar structures provided in an embodiment of this application;

[0028] Figure 5 A flowchart illustrating a printing method for a lunar surface structure printing apparatus provided in this application embodiment.

[0029] The text labels in the image represent:

[0030] 1. Conveying assembly; 101. First channel; 102. First drive assembly; 2. Spray assembly; 201. First part; 202. Second part; 203. First opening; 3. Heating element; 4. Third drive assembly; 401. Second channel; 5. Cooling assembly; 501. First storage tank; 511. Third cavity; 502. Second storage tank; 521. Fourth cavity; 503. First vent pipe; 504. Second vent pipe; 505. Power pump; 6. Covering layer; 7. First rotating shaft; 8. First support; 801. Second opening; 802. Second cavity; 803. Fourth drive assembly; 9. First spray element; 10. Protective assembly. Detailed Implementation

[0031] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0032] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] Example 1

[0034] As mentioned in the background section, in view of the problems in the prior art, this application proposes a printing device for lunar structures, such as... Figure 1 As shown, it includes:

[0035] Multiple printing units, each including:

[0036] A collection component, located on the lunar surface, is used to collect lunar soil powder from the lunar surface;

[0037] A conveying component 1, one end of which is connected to the collection component, has a first channel 101 inside for conveying lunar soil powder collected by the collection component; optionally, the conveying component 1 is a cylindrical metal conveying pipe.

[0038] The jetting assembly 2, one end of which is connected to the end of the delivery assembly 1 away from the lunar surface, has a first cavity inside, and a first opening 203 at the end of the jetting assembly 2 away from the delivery assembly 1; optionally, as... Figure 2 As shown, the spraying component 2 is an inverted conical crucible made of ceramic, which has good high temperature resistance, and is either integrated with or separate from the metal conveying pipe.

[0039] A heating component is provided to heat and melt the lunar soil powder in the first cavity to obtain the lunar soil melt, which can flow out from the first opening 203. The lunar soil melt is required for constructing structures on the lunar surface. The lunar soil powder needs to be heated to 1300°C to melt and form the lunar soil melt. The heating component can heat the lunar soil powder to obtain the lunar soil melt. Furthermore, since the gravity on the moon is one-sixth that on Earth, the lunar soil melt cannot flow out of the first opening 203 naturally under its own gravity. Pressure needs to be applied above the lunar soil melt to make it flow out. Therefore, during the heating process, the lunar soil powder needs to be continuously supplied to the top of the lunar soil melt, causing the lunar soil powder to compress the lunar soil melt, thereby forcing the lunar soil melt to flow out of the first opening 203.

[0040] The first driving component 102 is used to drive the conveying component 1 to convey the lunar soil powder collected by the collection component; optionally, the first driving component 102 is disposed on the outer wall of the conveying component 1, and can be a suction pump, which can suck the lunar soil powder collected by the collection component into the first cavity.

[0041] This solution uses the first driving component 102 to drive the conveying component 1 to transport the lunar soil powder collected by the collection component to the spraying component 2, and then uses the heating component to melt the lunar soil powder into lunar soil melt. The obtained lunar soil melt can be used to construct structures; this achieves in-situ construction of structures on the lunar surface, reduces construction costs and improves construction efficiency by using materials locally on the lunar surface.

[0042] Further, the first cavity includes a first part 201 and a second part 202, the first part 201 and the second part 202 are connected, the end of the first part 201 away from the second part 202 is connected to the end of the conveying assembly 1 away from the lunar surface, and the end of the second part 202 away from the first part 201 is provided with the first opening 203; wherein, after the lunar soil powder enters the first cavity, it will be divided into two parts by high temperature heating by the heating assembly, one part is the molten lunar soil melt, and the other part is the lunar soil powder, the first part 201 is used to contain the lunar soil powder, and the second part 202 is used to contain the molten lunar soil melt.

[0043] Furthermore, the heating assembly includes a heating element 3 wound around the outer wall of the spraying assembly 2 and a second driving assembly for driving the heating element 3 to heat up; optionally, the heating element 3 is a high-frequency coil made of iron, and the second driving assembly is a solar-powered induction cooker, which uses the current generated by the solar panel to create a magnetic field, and the high-frequency coil in the magnetic field can generate an induced current, using the thermal effect of the current to continuously heat up the high-frequency coil; after a large number of experiments, it was found that the temperature required for the lunar soil powder to melt into the lunar soil melt is 1300℃, and the second driving assembly can quickly heat the temperature of the heating element 3 to 1300℃. The induction cooker heating is induction heating, which is both efficient and environmentally friendly; in addition, as Figure 2 As shown, the distance between two adjacent turns of the heating element 3 wound around the outer wall of the spray assembly 2 corresponding to the second part 202 is smaller than the distance between two adjacent turns of the heating element 3 wound around the outer wall of the spray assembly 2 corresponding to the first part 201. This facilitates the transfer of more heat to the second part 202 and avoids the situation where the lunar soil melt is not completely melted.

[0044] Furthermore, the printing mechanism also includes a cooling component 5, which can reduce the temperature of the heating element 3; specifically, when the second driving component heats the heating element 3, it needs to be cooled down after reaching a certain temperature to prevent the heating element 3 from melting due to excessive temperature; optionally, such as Figure 3As shown, the cooling assembly 5 includes a first storage tank 501 located away from the outer wall of the jet assembly 2 and the heating element 3, a second storage tank 502 located on the lunar surface, and a first vent pipe 503 and a second vent pipe 504 connecting the first storage tank 501 and the second storage tank 502. The first storage tank 501 has a third cavity 511 inside, and the second storage tank 502 has a fourth cavity 521 inside. The third cavity 511, the first vent pipe 503, the fourth cavity 521, and the second vent pipe 504 are connected. Optionally, the first vent pipe 503 and the second vent pipe 504 are both sufficiently long rubber tubes, and the heat carried away by the water vapor will not exceed the melting point of the rubber. The temperature difference on the lunar surface is between -190 and +137°C, with a day (14*24h) and night (14*24h) temperature change cycle. Based on the actual environment of the moon, among the three traditional heat transfer methods, only heat conduction is feasible. Water has a high specific heat capacity, and its melting and boiling points are respectively... Water can be used as a heat transfer medium because of its temperature range of 0℃ and 100℃. On the moon, due to the vacuum environment, water will turn into water vapor. Both the third cavity 511 and the fourth cavity 521 contain approximately 50 liters of water vapor. The first storage tank 501 is in contact with the heating element 3. The second storage tank 502 is connected to a power pump 505. When the surface temperature of the heating element 3 reaches a certain level, the power pump 505 is turned on, driving the water vapor in the fourth cavity 521 to flow through the first vent pipe 503 into the third cavity 511, and compressing the water vapor in the third cavity 511. This causes the water vapor in the third cavity 511 to flow through the second vent pipe 504 into the fourth cavity 521. Because the second storage tank 502 is in contact with the lunar surface, the temperature of the water vapor flowing into the fourth cavity 521 can be rapidly reduced. Based on this, the water vapor can form a circulation, thereby stabilizing the temperature of the heating element 3 and preventing it from melting due to excessive temperature.

[0045] Furthermore, the outer wall of the spraying assembly 2 is provided with a coating layer 6, and the coating layer 6 is in contact with the heating element 3 on the side away from the spraying assembly 2; optionally, the coating layer 6 is made of graphite. Since graphite has good thermal conductivity, it can transfer the heat of the heating element 3 into the first cavity more quickly, thereby improving the melting efficiency of the lunar soil powder.

[0046] Furthermore, a third driving component 4 is provided between the conveying component 1 and the collecting component. One end of the third driving component 4 is rotatably connected to the conveying component 1. The third driving component 4 has a second channel 401 inside, which communicates with the first channel 101 to form a third channel. Optionally, the third driving component 4 is a robotic arm, and the lunar soil powder collected by the collecting component can enter the first cavity through the third channel. The conveying component 1 and the robotic arm are connected by a first rotating shaft 7. The conveying component 1 can drive the spraying component 2 to rotate around the first rotating shaft 7, with a rotation range of 0 to 30 degrees. In actual construction of structures, it is necessary to print structures with special shapes such as domes. The conveying component 1 can drive the spraying component 2 to rotate around the first rotating shaft 7, making the printing of special-shaped structures more convenient and efficient.

[0047] Further, the collection component includes a first support 8, the end of the first support 8 away from the third driving component 4 is in contact with the lunar surface and has a second opening 801, the first support 8 has a second cavity 802 inside, and the second opening 801 communicates with the second cavity 802 and the third channel to form a fourth channel; the collection component also includes a grinding element disposed in the second cavity 802, the grinding element being used to grind the collected lunar soil powder; optionally, the first support 8 is a cuboid support, wherein the first support 8 can both provide support and store the lunar soil powder, the first support 8 is provided with a fourth driving component 803, the fourth driving component 803 being a suction pump, the suction pump can collect the lunar soil powder on the lunar surface into the second cavity 802; the grinding element can A grinder is selected because most of the lunar soil powder has a diameter between 40 and 130 micrometers, with an average of 70 micrometers. Approximately 10%-20% of the lunar soil powder has a diameter of less than 20 micrometers. Lunar soil powder with a diameter of less than 20 micrometers is prone to floating. The grinder is used to grind the collected lunar soil powder to a diameter of 20 micrometers. The ground lunar soil powder can flow into the first cavity through the fourth channel. Grinding can improve the melting efficiency of the lunar soil powder into the lunar soil melt. Since the lunar soil powder with a diameter of less than 20 micrometers is prone to floating, it can also reduce the occurrence of lunar soil powder being mixed into the lunar soil melt located in the second part 202. In addition, the lunar soil powder with a diameter of about 20 micrometers will not clog the first opening 203 when mixed into the lunar soil melt, so it will not affect the use of this device.

[0048] Furthermore, a first jetting element 9 is detachably connected to the first opening 203. The first jetting element 9 has multiple jetting ports, each of which communicates with the first cavity. Optionally, the first jetting element 9 is the printing nozzle of the device. The printing nozzle can be screwed to the first opening 203, and has multiple jetting ports at the end away from the first opening 203. In actual printing of structures, different printing nozzles are used for different structures. Printing nozzles with different numbers of jetting ports can be used according to the different requirements of the printed structures. The diameter of each jetting port can also be set according to the requirements of the printed structures. Among them, due to the characteristics of the lunar regolith melt, when the lunar regolith melt in the first cavity is produced by the jetting nozzle with a diameter of 2mm... The lunar regolith is ejected as liquid when it is ejected from the nozzle, and as lunar regolith fibers when ejected from the nozzle with a diameter of 100-200 micrometers. The lunar regolith fibers are composed of one or more of alumina fibers, boron nitride fibers, silicon nitride fibers, silicon carbide fibers, and continuous basalt fibers. Optionally, the raw materials required for printing the structure need to be obtained by mixing the liquid lunar regolith and the lunar regolith fibers. When the mixing ratio is 9:1, the printing nozzle required for printing the structure can be provided with one nozzle with a diameter of 100-200 micrometers and nine nozzles with a diameter of 2 mm. The structure printed with the raw materials obtained by mixing the liquid lunar regolith and the lunar regolith fibers has higher strength. In addition, the detachability of the first ejector 9 improves the applicability of the printing device.

[0049] like Figure 2 As shown, the jetting assembly 2 is covered with a protective assembly 10. The protective assembly 10 protects the jetting assembly 2 and ensures that the operating temperature of the jetting assembly 2 is not affected by the lunar environment temperature. Specifically, the outer surface temperature of the jetting assembly 2 is high after being heated by the heating assembly, and the protective assembly 10 can ensure the personal safety of the operator. In addition, the protective assembly 10 can also prevent the jetting assembly 2 from being damaged by impacts from other floating objects on the lunar surface. At the same time, it can also play a heat insulation role, reducing the heat loss inside the jetting assembly 2 and improving the heating efficiency of the heating assembly. In addition, the lunar surface has strong radiation, which can affect the service life and mechanical properties of metals. Therefore, it is necessary to spray a radiation-resistant coating on the surface of the device. Spraying a radiation-resistant coating on the surface of the device can effectively slow down the aging rate of the metal. Optionally, the radiation-resistant coating material is polyethylene.

[0050] Example 2

[0051] Based on Example 1, this application further proposes a printing method for a lunar surface structure printing device, characterized in that, as in Example 1... Figure 5 As shown, it includes the following steps:

[0052] S101: Obtain the set of printing trajectories for the lunar surface structures to be printed;

[0053] S102: The set of printing tracks is divided according to the printing area corresponding to each printing mechanism to obtain n printing tracks; each printing mechanism corresponds to a printing area;

[0054] S103: Drive each printing mechanism to print the corresponding printing area according to each printing trajectory;

[0055] Optionally, such as Figure 4 As shown, the printing device includes two of the aforementioned printing mechanisms. The device also includes a control component, which is a computer, to control the printing of structures by each of the printing mechanisms. Building structures on the lunar surface primarily relies on 3D printing technology. When the printing device is working, firstly, a three-dimensional model of the structure to be printed is constructed using computer modeling software, and the set of printing trajectories is extracted from this model. Secondly, the set of printing trajectories is divided into a first printing trajectory and a second printing trajectory based on the two printing areas corresponding to the two printing mechanisms. Finally, the computer is electrically connected to each printing mechanism. The computer, through program settings, controls the third drive component 4 of each printing mechanism to simultaneously drive its corresponding conveying component 1 and jetting component 2 to move and jet the lunar regolith melt according to the first and second printing trajectories, thereby achieving the printing of the structure in sections. Furthermore, the moon experiences approximately 300 lunar earthquakes per year, with relatively small magnitudes (maximum magnitude 4), and the gravitational acceleration is only one-sixth that of the Earth's surface. Therefore, the mechanical properties of the structures do not require special consideration.

[0056] Furthermore, driving each printing mechanism to print on the corresponding printing area according to each printing trajectory includes driving the i-th printing mechanism to print on the a-th printing area, and driving the j-th printing mechanism to print on the (a+1)-th printing area; where 1≤i≤m, 1≤j≤m, 1≤a≤n, i≠j, i and j are the numbers of the printing mechanisms, a is the number of the printing area, m is the number of the printing mechanisms, n is the number of the printing areas, and i, j, a, m, and n are all integers; specifically, after dividing the set of printing trajectories according to the printing areas corresponding to each printing mechanism, each printing mechanism and each printing area can be numbered to facilitate a one-to-one correspondence when the computer program controls each printing mechanism to print on the corresponding printing area, thereby ensuring the orderly progress of the printing work.

[0057] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A printing device for lunar surface structures, characterized in that, include: Multiple printing units, each including: A collection component, located on the lunar surface, is used to collect lunar soil powder from the lunar surface; A conveying component (1) is connected at one end to the collection component and has a first channel (101) inside for conveying the lunar soil powder collected by the collection component. The jetting assembly (2) has one end connected to the end of the delivery assembly (1) away from the lunar surface. The jetting assembly (2) has a first cavity inside and a first opening (203) at the end of the jetting assembly (2) away from the delivery assembly (1). A heating assembly is used to heat and melt the lunar soil powder in the first cavity to obtain lunar soil melt, which can flow out from the first opening (203); A first driving component (102) is used to drive the conveying component (1) to convey the lunar soil powder; The first cavity includes a first part (201) and a second part (202). The first part (201) is connected to the second part (202). The end of the first part (201) away from the second part (202) is connected to the end of the conveying assembly (1) away from the lunar surface. The end of the second part (202) away from the first part (201) is provided with the first opening (203). After the lunar soil powder enters the first cavity, it will be divided into two parts by high temperature heating of the heating assembly. One part is the molten lunar soil and the other part is the lunar soil powder. The first part (201) is used to contain the lunar soil powder and the second part (202) is used to contain the molten lunar soil. During the heating process, the lunar soil powder is continuously conveyed to the top of the molten lunar soil, so that the lunar soil powder squeezes the molten lunar soil, thereby squeezing the molten lunar soil out of the first opening (203). The heating assembly includes a heating element (3) wrapped around the outer wall of the spray assembly (2) and a second driving assembly that drives the heating element (3) to heat up; and the distance between two adjacent turns of the heating element (3) wrapped around the outer wall of the spray assembly (2) corresponding to the second part (202) is smaller than the distance between two adjacent turns of the heating element (3) wrapped around the outer wall of the spray assembly (2) corresponding to the first part (201), so as to transfer more heat to the second part (202) and avoid the situation where the lunar soil melt is not completely melted.

2. The printing device for lunar structures according to claim 1, characterized in that, The printing mechanism also includes a cooling component (5) that can reduce the temperature of the heating element (3).

3. The printing device for lunar structures according to claim 2, characterized in that, The outer wall of the spray assembly (2) is provided with a coating layer (6), and the coating layer (6) is in contact with the heating element (3) on the side away from the spray assembly (2).

4. The printing apparatus for lunar surface structures according to claim 3, characterized in that, A third driving component (4) is provided between the conveying component (1) and the acquisition component. One end of the third driving component (4) is rotatably connected to the conveying component (1). The third driving component (4) has a second channel (401) inside. The second channel (401) is connected to the first channel (101) to form a third channel.

5. The printing apparatus for lunar surface structures according to claim 4, characterized in that, The acquisition component includes a first support (8), the end of the first support (8) away from the third drive component (4) is in contact with the lunar surface and has a second opening (801), the first support (8) has a second cavity (802) inside, and the second opening (801) communicates with the second cavity (802) and the third channel to form a fourth channel; the acquisition component also includes a grinding element disposed in the second cavity (802), the grinding element being used to grind the acquired lunar soil powder.

6. The printing apparatus for lunar structures according to claim 5, characterized in that, A first spray member (9) is detachably connected to the first opening (203). The first spray member (9) is provided with multiple spray ports, and each spray port is connected to the first cavity.

7. A printing method for a printing apparatus for lunar structures as described in any one of claims 1-6, characterized in that, Includes the following steps: S101: Obtain the set of printing trajectories for the lunar surface structures to be printed; S102: The set of printing tracks is divided according to the printing area corresponding to each printing mechanism to obtain n printing tracks; each printing mechanism corresponds to a printing area; S103: Drive each printing mechanism to print the corresponding printing area according to each printing trajectory.

8. The printing method according to claim 7, characterized in that, The process of driving each printing mechanism to print the corresponding printing area according to each printing trajectory includes driving the i-th printing mechanism to print the a-th printing area, and using the j-th printing mechanism to print the (a+1)-th printing area; where 1≤i≤m, 1≤j≤m, 1≤a≤n, i≠j, i and j are the numbers of the printing mechanisms, a is the number of the printing area, m is the number of the printing mechanisms, n is the number of the printing areas, and i, j, a, m, and n are all integers.

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